CN117778679B - Mould quenching high-pressure cooling box - Google Patents
Mould quenching high-pressure cooling box Download PDFInfo
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- CN117778679B CN117778679B CN202410095576.4A CN202410095576A CN117778679B CN 117778679 B CN117778679 B CN 117778679B CN 202410095576 A CN202410095576 A CN 202410095576A CN 117778679 B CN117778679 B CN 117778679B
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- 238000001816 cooling Methods 0.000 title claims abstract description 116
- 230000000171 quenching effect Effects 0.000 title claims abstract description 50
- 238000010791 quenching Methods 0.000 title claims abstract description 37
- 238000005192 partition Methods 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 238000007789 sealing Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000112 cooling gas Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention provides a die quenching high-pressure cooling box which comprises a box body and a cooling nozzle assembly, wherein a sealed cooling cavity is formed in the box body, and a door body is arranged on the side wall of the cooling cavity; the cooling nozzle assembly is arranged on the top and the side wall of the cooling cavity, is connected with a cooling air source and is used for rapidly cooling the die in the cooling cavity, and the air outlet direction of the cooling nozzle assembly can realize reciprocating swing. The high-pressure cooling box for die quenching has compact structure, can realize high-pressure rapid cooling, and has convenient use and good quenching effect.
Description
Technical Field
The invention relates to heat treatment equipment, in particular to a die quenching high-pressure cooling box.
Background
The mould is a variety of moulds and tools used for injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods to obtain the required products in industrial production; in short, a mold is a tool used to make a molded article.
The existing die heat treatment is affected by the process, the hardness of the die cannot meet the requirement, and the service performance and the service life of the die are affected; in the traditional technology, quenching is usually carried out through oil cooling or water cooling, and for a die with higher requirements, the traditional oil cooling and water cooling cannot meet the design requirements of the die, influence the service effect and service life of the die, and cannot meet the design requirements of an intelligent heat treatment production line.
Disclosure of Invention
The invention aims to solve the technical problem of providing the die quenching high-pressure cooling box which has the advantages of compact structure, internal pressure and good quenching effect and can realize intelligent heat treatment production.
The invention provides a die quenching high-pressure cooling box, which comprises:
The box body 1 is internally provided with a sealed cooling cavity 10, and the side wall of the cooling cavity 10 is provided with a door body 11;
and the cooling nozzle assembly 2 is arranged on the top and the side wall of the cooling cavity 10, is connected with a cooling air source and is used for rapidly cooling the die in the cooling cavity 10, and the air outlet direction of the cooling nozzle assembly can realize reciprocating swing.
Further, the direction of the air outlet swing of the cooling nozzle assembly positioned on the side wall is perpendicular to the horizontal plane.
Further, the cooling nozzle can realize intermittent air injection.
Further, the cooling nozzle assembly comprises a support plate capable of being mounted on the inner wall of the cooling cavity 10, an air cavity 200 is formed in the support plate, strip-shaped mounting grooves 20 are formed in the surface of the support plate, the plurality of mounting grooves 20 are equidistantly arranged, air nozzles 4 communicated with the air cavity are rotatably mounted in the mounting grooves 20, and the plurality of air nozzles 4 are equidistantly arranged along the length direction of the mounting grooves; a push plate 51 for pushing the air tap 4 to swing back and forth is arranged in the mounting groove 20 in a sliding manner; the end part of the support plate is fixed with a mounting cavity 30, an air bag used for driving the push plate 51 to slide is arranged in the mounting cavity, and the air bag is connected with an air source.
Further, the side wall of the push plate 51 is provided with gear teeth and forms racks, the support plate is rotatably provided with gears, and the gears simultaneously engage with the racks on two sides and enable the movement directions of two adjacent push plates to be opposite.
Further, the air tap comprises a cylindrical air tap body, through holes are formed in two ends of the air tap body in a penetrating mode, an air hole 40 is formed in the tail portion of the air tap body, a first spherical body 41 is arranged at the tail portion of the air tap body, a second spherical body 42 is arranged on the side wall of the air tap body, and the spherical centers of the first spherical body 41 and the second spherical body 42 are located on the axis of the air hole 40; the bottom surface of the mounting groove is provided with a bottom plate, a first spherical cavity is formed in the bottom plate, an air hole communicated with the air cavity 200 is formed in the bottom surface of the spherical cavity, and the first spherical body 41 is rotatably mounted in the first spherical cavity; the bottom plate is provided with a supporting plate 53, the supporting plate 53 is provided with a hole body 520 which can allow the air tap to pass through and provide a rotating space for the air tap, the push plate 51 is slidingly matched with the supporting plate 53, and the push plate 51 is provided with an arc-shaped cavity which can allow the second spherical body 42 to be sleeved in and realize rotating connection.
Further, the bottom plate comprises a bottom plate 54 and an upper bottom plate 53 which is mounted on the bottom plate 54 in a fitting manner, a first arc-shaped concave hole 540 with a large upper end and a small lower end is formed in the bottom plate, the lower end of the first arc-shaped concave hole is open, and the plurality of first arc-shaped concave holes are equidistantly arranged along the length direction of the bottom plate; the upper bottom plate is provided with a second arc concave hole 530 which corresponds to the first arc concave hole and has a large lower end and a small upper end, and a first spherical cavity with two open ends is formed between the first arc concave hole and the second arc concave hole.
Further, a plurality of partition boards 21 are arranged in the air cavity 200, the partition boards partition the air cavity into subchambers with the same number as the installation grooves, and a hole 201 communicated with the first spherical cavity is formed in the bottom surface of each subchamber.
Further, the air chambers are connected with a pneumatic reversing valve, and spray nozzles in two adjacent mounting grooves 20 alternately.
Further, the pneumatic reversing valve comprises a cylindrical valve body, an upper cavity and a lower cavity are formed in the valve body, a main shaft 72 is rotatably installed in the lower cavity, the upper end of the main shaft penetrates through the upper cavity and extends out of the valve body, a turbine 71 positioned in the upper cavity and a swash plate 721 positioned in the lower cavity are arranged on the side wall of the main shaft, and an air inlet 60a and an air outlet 60b for driving the turbine to rotate and driving the main shaft 72 to rotate are arranged on the side wall of the upper cavity; the bottom surface of the lower cavity is provided with at least two valve holes 80, the valve holes 80 are circumferentially and uniformly distributed around the axis of the main shaft, the lower ends of the valve holes penetrate through the valve body and serve as air outlet holes 801 communicated with the air cavity, the side wall of the valve hole is provided with air inlet holes 802, and the air inlet holes are connected with a cooling medium air source; the valve hole is internally provided with a valve core 77 which can realize the communication or blocking of the air inlet hole and the air outlet hole, the upper end of the valve core 77 is provided with a spherical hinge, the spherical hinge is connected with a pressure plate 73, the top surface of the pressure plate 73 is attached to the bottom surface of the swash plate 721 and can realize mutual sliding, and when the swash plate rotates, the pressure plate can be pushed to swing and each valve core can realize staggered reciprocating sliding.
Further, an elastic component which enables the valve core to move upwards and is attached to the swash plate by the pressure plate is arranged in the valve hole.
Further, the valve body comprises a cylindrical valve body 8 and a cylindrical shell 6 which is coaxial with the valve body and is connected to the upper end of the valve body through threads, a partition board is arranged in the shell 6, the lower cavity is formed between the partition board and the upper end face of the valve body, a central hole 81 for installing a main shaft is formed in the center of the upper end face of the valve body, valve holes are circumferentially and uniformly distributed around the central hole, a cover plate is fixed at the top of the shell, and the upper cavity is formed between the cover plate and the partition board; the side wall of the valve body is provided with an annular groove, an annular chamber 800 is formed between the annular groove and the inner wall of the shell, each air inlet 802 is communicated with the annular chamber, and the side wall of the annular chamber is provided with an air inlet interface.
Further, the side wall of the valve body 8 is provided with two shaft shoulders and two upward first step surfaces 83, the two first step surfaces are respectively located at the upper end and the lower end of the annular chamber, the inner wall of the housing is provided with second step surfaces respectively attached to the two first step surfaces, and a sealing gasket is arranged between the first step surfaces and the second step surfaces to realize sealing.
Further, the valve body includes a first shaft body 84, a second shaft body and a third shaft body which are coaxially arranged and sequentially reduced in diameter, and a step surface for sealing is formed between the first shaft body and the second shaft body and between the second shaft body and the third shaft body; the valve hole is formed at the end part of the third shaft body and axially extends into the second shaft body, the bottom of the valve hole is provided with an air outlet hole 801, the diameter of the air outlet hole is smaller than the aperture of the valve hole, a supporting step surface for installing an elastic part is formed between the air outlet hole and the air outlet hole, the lower end of the air outlet hole penetrates out of the valve body, and a screw hole is formed at the end part of the air outlet hole; the annular chamber is formed between the second shaft body outer wall and the shell inner wall, and the air inlet 802 is formed in the second shaft body side wall; the outer wall of the upper end of the first shaft body is provided with an external thread for being connected with the shell.
Further, the air inlet 60a and the air outlet 60b are tangential to the inner wall of the upper chamber.
Further, an included angle between the air inlet 60a and the air outlet 60b is greater than or equal to 90 degrees and less than 120 degrees.
Further, a hole 730 for allowing the spindle to pass through is formed in the center of the pressure plate 73, a stationary ring 731 coaxial with the pressing plate is arranged on the upper surface of the pressure plate, a movable ring is arranged on the lower surface of the swash plate, and the movable ring and the stationary ring are mutually bonded and in sliding fit.
Further, the end of the main shaft is connected with a driving motor through a clutch.
Further, a bracket tray 75 is arranged at the lower end of the pressure plate 73, mounting holes 751 with the same number as the valve cores are formed in the bracket tray 75, a hinged support 74 is mounted in each mounting hole, and spherical hinged holes are formed at the lower end of each hinged support.
Further, the valve core comprises a valve core body 772, a first connecting rod 773 and a second connecting rod 774 which are coaxially arranged and sequentially reduced in diameter, a spherical hinge part 775 is arranged at the end part of the second connecting rod, and annular grooves for installing sealing rings are formed at the two ends of the valve core body; the center of the lower end of the spool body 772 is provided with a cylindrical protrusion and forms a spring installation part.
Further, the included angle between the swash plate and the main shaft is more than or equal to 10 degrees and less than or equal to 20 degrees.
The invention has the advantages that: the high-pressure cooling box for die quenching is provided with the cooling cavity, so that high-pressure cooling can be realized, the cooling efficiency is high, the effect is good, the quenching effect of the die can be greatly improved, automatic or manual pressure relief can be realized, the use safety is high, and the effect is good; the cooling nozzle assembly is arranged, so that multi-angle and large-range air inlet to the cooling cavity can be realized, the contact uniformity of cooling air and the surface of the die is high, and the quenching effect is good; reciprocating air injection can form turbulence in the internal medium, improve the contact efficiency of the medium and the surface of the die, and realize rapid, full and uniform cooling; the gear is arranged for linkage, so that the injection directions of two adjacent rows of nozzles are opposite, internal turbulence is realized, and the influence of continuous airflow in one direction on the quenching effect is avoided; the intermittent air outlet is adopted, so that the impact property can be formed, the fluidity of an internal medium is improved, the medium is fully contacted with the die, and the cooling efficiency and effect are improved; the pneumatic reversing valve is arranged, automatic reversing is realized through the air source or the motor, so that each nozzle realizes staggered and intermittent air outlet, the structure is compact, and the reversing effect is good; the pneumatic reversing valve is structurally designed, so that single-input multi-output can be realized, and the pneumatic reversing valve is stable and reliable to use; the high-pressure cooling box for die quenching has compact structure, can realize high-pressure rapid cooling, and has convenient use and good quenching effect.
Drawings
FIG. 1 is a schematic view of a structure of a die quenching high-pressure cooling tank of the present invention;
FIG. 2 is a schematic view of the structure of a cooling nozzle assembly of the die quenching high pressure cooling tank of the present invention;
FIG. 3 is a front view of a cooling nozzle assembly of the die quenching high pressure cooling tank of the present invention;
FIG. 4 is a schematic view of an exploded view of a cooling nozzle assembly of the die quenching high pressure cooling tank of the present invention;
FIG. 5 is an enlarged view of a portion of the cooling nozzle assembly of the die quenching high pressure cooling tank of the present invention;
FIG. 6 is a cross-sectional view of a cooling nozzle assembly of the die quenching high pressure cooling tank of the present invention;
FIG. 7 is an enlarged view of portion A of FIG. 6;
FIG. 8 is a schematic view of the structure of an air gun of the cooling nozzle assembly of the die quenching high pressure cooling tank of the present invention;
FIG. 9 is a schematic view of the pneumatic reversing valve of the die quenching high pressure cooling tank of the present invention;
FIG. 10 is a schematic diagram of an exploded construction of a pneumatic reversing valve of the die quenching high pressure cooling tank of the present invention;
FIG. 11 is a cross-sectional view of the pneumatic reversing valve of the die quenching high pressure cooling tank of the present invention;
FIG. 12 is a transverse cross-sectional view of the pneumatic reversing valve of the die quenching high pressure cooling tank of the present invention;
FIG. 13 is a schematic view of the structure of the valve body of the pneumatic reversing valve of the die quenching high-pressure cooling tank of the invention;
FIG. 14 is a schematic view of the structure of the housing of the pneumatic reversing valve of the die quenching high pressure cooling tank of the present invention;
FIG. 15 is a schematic view of the structure of a bracket tray of a pneumatic reversing valve of a die quenching high-pressure cooling tank of the invention;
FIG. 16 is a schematic view of the structure of the platen of the pneumatic reversing valve of the die quenching high pressure cooling tank of the present invention;
FIG. 17 is a schematic view of the structure of a swash plate of a pneumatic reversing valve of the die quenching high pressure cooling tank of the present invention;
Fig. 18 is a schematic structural view of a valve core of a pneumatic reversing valve of a die quenching high-pressure cooling tank of the invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1-18, the present invention provides a high-pressure cooling box for quenching a mold, which can rapidly cool the mold by high-pressure gas (N 2), and comprises a box body 1, wherein a sealed cooling cavity 10 is formed in the box body 1 for placing the mold to be cooled, a door body 11 is arranged on the side wall of the cooling cavity 10, the box body has a certain thickness and can bear high pressure, meanwhile, the inner wall of the box body is a hollow interlayer, and a heat insulation layer made of heat insulation materials is arranged in the interlayer for placing heat transfer.
A supporting seat is arranged on the bottom surface of the cooling cavity 10 and used for placing a die, a reticular groove is formed on the top surface of the supporting seat, the depth of the groove is 5mm-20mm, the width of the groove is 2mm-5mm, and cooling gas can enter the groove and is contacted with the bottom surface of the die; an automatic relief valve and a manual relief valve are arranged on the side wall of the box body 1 and used for manually or automatically discharging internal gas.
Referring to fig. 2-8, a cooling nozzle assembly 2 is disposed on the top surface and at least three inner walls of the cooling cavity 10, the cooling nozzle assembly 2 is connected with a cooling air source (N 2) for rapidly cooling the mold in the cooling cavity 10, in the present application, the air outlet direction of the cooling nozzle assembly can realize reciprocating swing, and the air outlet swing direction of the cooling nozzle assembly located on the side wall (not the top surface) is perpendicular to the horizontal plane, so that up-down swing can be realized, which can generate turbulence in the internal cooling air, improve fluidity, form internal circulation, greatly improve the effective contact area between the cooling air and the mold surface, improve cooling effect and efficiency, and have good quenching effect.
The cooling nozzle assembly comprises a support plate, wherein the support plate is a rectangular plate body and can be installed on the inner wall (side wall and top surface) of the cooling cavity 10, an air cavity 200 is formed in the support plate, the air cavity 200 is connected with a cooling air source, strip-shaped mounting grooves 20 are formed in the front surface of the support plate, the number of the mounting grooves 20 is multiple, the mounting grooves 20 are equidistantly arranged, air nozzles 4 are rotatably installed in the mounting grooves 20, the air nozzles 4 are communicated with the air cavity, and the air nozzles 4 are multiple and are equidistantly arranged along the length direction of the mounting grooves; meanwhile, a push plate 51 is slidably arranged in the mounting groove 20, and the sliding direction of the push plate 51 is parallel to the length direction of the mounting groove 20, and is used for pushing the push plate 51 of the reciprocating swing of the air nozzle 4; the end part of the support plate is fixed with a mounting cavity 30, an air bag is arranged in the mounting cavity, the air bag is communicated with an air source, and is connected with the end part of the push plate 51 at the same time, and is used for driving the air bag sliding of the push plate 51; when the air bag is released, the push plate is pushed to approach the air bag direction under the action force of the reset spring, so that reset is realized, and further reciprocating motion of the push plate is realized.
The push plate 51 is bar-shaped, the width of the push plate is basically the same as that of the mounting groove, so that sliding fit can be realized, gear teeth are arranged on the side wall of the push plate to form racks, meanwhile, gears are rotatably arranged on the support plate and simultaneously meshed with the racks on the two sides of the support plate, so that the movement directions of two adjacent push plates are opposite, namely, the movement directions of nozzles in the two adjacent mounting grooves are opposite, and the turbulence of air flow is improved.
In the application, the air tap comprises a cylindrical air tap body, through holes are formed at two ends of the air tap body to form an air hole 40, a first spherical body 41 is arranged at the tail part of the air tap body, a second spherical body 42 is arranged on the side wall of the air tap body, the second spherical body is positioned at the front end of the first spherical body, and the spherical centers of the first spherical body 41 and the second spherical body 42 are both positioned on the axis of the air hole 40; a bottom plate is arranged on the bottom surface of the mounting groove, a plurality of first spherical cavities are formed in the bottom plate, the first spherical cavities are equidistantly arranged along the length direction, air holes communicated with the air cavity 200 are formed in the bottom surface of the spherical cavity, and the first spherical body 41 is rotatably arranged in the first spherical cavity and can rotate for 360 degrees; in this embodiment, the bottom plate includes a bottom plate 54 and an upper bottom plate 53 mounted on the bottom plate 54 in a fitting manner, a first arc-shaped concave hole 540 with a large upper end and a small lower end is formed in the bottom plate, the lower end of the first arc-shaped concave hole is open, and an air hole communicated with the air gun is formed, and the first arc-shaped concave holes are multiple and are equidistantly arranged along the length direction of the bottom plate; a second arc concave hole 530 corresponding to the first arc concave hole is formed on the upper bottom plate, the lower end of the second arc concave hole 530 is big, the upper end of the second arc concave hole is small, a first spherical cavity with two open ends is formed between the first arc concave hole and the second arc concave hole, and the first spherical cavity is used for rotating and assembling the first spherical body; the bottom plate is provided with a supporting plate 53, the supporting plate 53 is provided with a hole body 520, the hole body 520 corresponds to the air tap and can accommodate the air tap to pass through, a rotating space is provided for the air tap, the push plate 51 is slidably matched with the surface of the supporting plate 53, meanwhile, the push plate 51 is provided with an arc-shaped cavity, the arc-shaped cavity can accommodate the second spherical body 42 to be sleeved in, further, the rotating connection is realized, the top surface of the arc-shaped cavity is provided with an elliptical hole, the air tap can be accommodated to swing, the blocking is avoided, the second spherical body can be pushed to move through the sliding of the push plate 51, and then the air tap can rotate around the spherical center of the first spherical body.
In the application, a plurality of partition plates 21 are arranged in an air cavity 200, the partition plates divide the air cavity into subchambers with the same number as the mounting grooves, one subchamber corresponds to one mounting groove, and a hole body 201 communicated with a first spherical cavity is formed in the bottom surface of the subchamber.
In order to further improve the quenching effect, the cooling nozzle can realize intermittent air injection, which can form impact on the inside, improve the fluidity of the inside air and improve the quenching effect, and in particular, the air cavity is connected with a pneumatic reversing valve, and can spray the nozzles in two adjacent mounting grooves 20 alternately.
Referring to fig. 9 to 18, the pneumatic reversing valve includes a cylindrical valve body in which upper and lower chambers are formed, the cross sections of the upper and lower chambers being circular, a main shaft 72 rotatably installed in the lower chamber, the main shaft being coaxial with the upper chamber, the upper end of the main shaft passing through the upper chamber and extending outside the valve body, and being connectable to a driving motor through a clutch; the turbine 71 and the swash plate 721 are fixed on the side wall of the main shaft, wherein the turbine 71 is an impeller and can be driven by gas, and is positioned in the upper cavity, meanwhile, the side wall of the upper cavity is provided with an air inlet 60a and an air outlet 60b for driving the turbine to rotate so as to drive the main shaft 72 to rotate, the air inlet 60a and the air outlet 60b are tangential to the inner wall of the upper cavity, and meanwhile, an included angle between the air inlet 60a and the air outlet 60b is more than or equal to 90 degrees and less than 120 degrees, so that the contact area between driving gas and the turbine can be increased, and the driving force and the driving stability are improved; the swash plate 721 is disposed in the lower chamber and is inclined to the main shaft, and in this embodiment, an included angle between the swash plate and the main shaft is 10 degrees or more and 20 degrees or less.
The bottom surface of the lower cavity is provided with at least two valve holes 80, wherein the valve holes 80 are circumferentially and uniformly distributed around the axis of the main shaft, in the embodiment, three or four valve holes are formed, the lower ends of the valve holes penetrate through the valve body to be used as air outlet holes 801 and are communicated with the air cavity to realize the outflow of cooling gas, and meanwhile, the side wall of the valve hole is provided with air inlet holes 802 which are connected with a cooling medium air source to realize the input of cooling gas; the valve core 77 is slidably arranged in the valve hole, the sliding direction of the valve core is parallel to the axis of the main shaft, the communication or blocking of the air inlet hole and the air outlet hole can be realized, further intermittent air outlet of the air outlet end can be realized, a spherical hinge is arranged at the upper end of the valve core 77, the spherical hinge is connected with a pressure plate 73, the top surface of the pressure plate 73 is attached to the bottom surface of the swash plate 721, the mutual sliding can be realized, when the swash plate rotates, the pressure plate can be pushed to swing, and further, each valve core can realize staggered reciprocating sliding, and staggered air outlet of different air outlet ends is realized; an elastic component is arranged in the valve hole, and the valve core has upward movement trend, so that the pressure plate can be attached to the swash plate, and empty contact is avoided.
The valve body will be described in detail below.
The valve body comprises a cylindrical valve body 8 and a shell 6 coaxial with the valve body, the shell 6 is cylindrical and is connected to the upper end of the valve body through threads, a partition board is arranged in the shell 6, the partition board is horizontally arranged, namely, the partition board is perpendicular to the axis of the shell, a lower cavity is formed between the partition board and the upper end face of the valve body, a central hole 81 is formed in the center of the upper end face of the valve body and used for installing a main shaft, valve holes are formed in the top face of the valve body and are uniformly distributed around the circumference of the central hole; a cover plate is fixed on the top of the shell, and an upper cavity is formed between the cover plate and the partition plate; meanwhile, an annular groove is formed in the side wall of the valve body, an annular chamber 800 is formed between the annular groove and the inner wall of the shell, each air inlet 802 is communicated with the annular chamber, and an air inlet interface is formed in the side wall of the annular chamber and used for being connected with a cooling air source.
Referring to fig. 13, two shoulders are provided on the side wall of the valve body 8, so as to form two first step surfaces 83 facing upwards, which are respectively located at the upper and lower ends of the annular chamber (air inlet 802); meanwhile, the inner wall of the shell is provided with second step surfaces respectively attached to the two first step surfaces, and a sealing gasket is arranged between the first step surfaces and the second step surfaces, so that the sealing of the annular cavity can be ensured; specifically, the valve body includes a first shaft body 84, a second shaft body and a third shaft body which are coaxially arranged and sequentially reduced in diameter, and a step surface is formed between the first shaft body and the second shaft body and between the second shaft body and the third shaft body; the valve hole is formed at the end part of the third shaft body, the valve hole axially extends downwards into the second shaft body, the bottom of the valve hole is provided with a gas outlet hole 801, the diameter of the gas outlet hole is smaller than the aperture of the valve hole, a supporting step surface is formed between the gas outlet hole and the valve hole, the supporting step surface is used for installing an elastic part (spring) which provides an upward movement trend for the valve core, the pressure plate is attached to the sloping cam plate, the lower end of the gas outlet hole penetrates out of the valve body, and the end part of the gas outlet hole is provided with a screw hole which is communicated with the gas cavity through the pipe body; an annular chamber is formed between the outer wall of the second shaft body and the inner wall of the shell, an air inlet 802 is formed in the side wall of the second shaft body, and an external thread is arranged on the outer wall of the upper end of the first shaft body and used for being in threaded connection with the shell.
Referring to fig. 16, the pressing plate 73 is in a circular shape as a whole, a hole 730 for allowing the spindle to pass through is formed in the center of the pressing plate, a stationary ring 731 is arranged on the upper surface of the pressing plate, the stationary ring is in a circular shape and is coaxial with the pressing plate, meanwhile, a movable ring is arranged on the lower surface of the swash plate, the movable ring and the stationary ring are mutually attached, the friction coefficient of the contact surface is low, the self-lubricating function is achieved, and sliding fit is achieved.
Referring to fig. 15, a bracket plate 75 is provided at the lower end of the pressure plate 73, the bracket plate is circular, mounting holes 751 having the same number as the valve cores are provided on the bracket plate 75, hinge holders 74 are installed in the mounting holes, the hinge holders are cylindrical, and spherical hinge holes are provided at the lower end of the hinge holders for realizing rotational connection with the valve cores.
Referring to fig. 18, the valve cartridge includes a valve cartridge body 772, a first connecting rod 773 and a second connecting rod 774 coaxially disposed and sequentially reduced in diameter, a spherical hinge portion 775 is provided at an end of the second connecting rod, which can be hinge-coupled with the hinge support 74, and annular grooves are provided at both ends of the valve cartridge body for mounting the sealing rings; a cylindrical protrusion is provided at the center of the lower end of the spool body 772 to form a spring mounting portion for mounting an elastic member so that the spool has an upward movement tendency.
The high-pressure cooling box for die quenching is provided with the cooling cavity, so that high-pressure cooling can be realized, the cooling efficiency is high, the effect is good, the quenching effect of the die can be greatly improved, automatic or manual pressure relief can be realized, the use safety is high, and the effect is good; the cooling nozzle assembly is arranged, so that multi-angle and large-range air inlet to the cooling cavity can be realized, the contact uniformity of cooling air and the surface of the die is high, and the quenching effect is good; reciprocating air injection can form turbulence in the internal medium, improve the contact efficiency of the medium and the surface of the die, and realize rapid, full and uniform cooling; the gear is arranged for linkage, so that the injection directions of two adjacent rows of nozzles are opposite, internal turbulence is realized, and the influence of continuous airflow in one direction on the quenching effect is avoided; the intermittent air outlet is adopted, so that the impact property can be formed, the fluidity of an internal medium is improved, the medium is fully contacted with the die, and the cooling efficiency and effect are improved; the pneumatic reversing valve is arranged, automatic reversing is realized through the air source or the motor, so that each nozzle realizes staggered and intermittent air outlet, the structure is compact, and the reversing effect is good; the pneumatic reversing valve is structurally designed, so that single-input multi-output can be realized, and the pneumatic reversing valve is stable and reliable to use; the high-pressure cooling box for die quenching has compact structure, can realize high-pressure rapid cooling, and has convenient use and good quenching effect.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (7)
1. A die quenching high pressure cooling box, comprising:
The box body is internally provided with a sealed cooling cavity, and the side wall of the cooling cavity is provided with a door body;
the cooling nozzle assembly is arranged on the top and the side wall of the cooling cavity, is connected with a cooling medium air source and is used for rapidly cooling the die in the cooling cavity, and the air outlet direction of the cooling nozzle assembly can realize reciprocating swing;
The cooling nozzle assembly comprises a support plate which can be mounted on the inner wall of the cooling cavity, an air cavity is formed in the support plate, strip-shaped mounting grooves are formed in the surface of the support plate, the plurality of mounting grooves are equidistantly formed, air nozzles communicated with the air cavity are rotatably mounted in the mounting grooves, and the plurality of air nozzles are equidistantly formed along the length direction of the mounting grooves; a push plate for pushing the air nozzle to swing back and forth is arranged in the mounting groove in a sliding manner; an installation cavity is fixed at the end part of the support plate, an air bag used for driving the push plate to slide is arranged in the installation cavity, and the air bag is connected with an air source;
The side wall of the push plate is provided with gear teeth and forms racks, the support plate is rotatably provided with gears, and the gears are simultaneously meshed with the racks on two sides and can enable the movement directions of two adjacent push plates to be opposite;
The air tap comprises a cylindrical air tap body, through holes are formed in the two ends of the air tap body in a penetrating mode, a first spherical body is arranged at the tail of the air tap body, a second spherical body is arranged on the side wall of the air tap body, and the spherical centers of the first spherical body and the second spherical body are located on the axis of the air hole; the bottom surface of the mounting groove is provided with a bottom plate, a first spherical cavity is formed in the bottom plate, an air hole communicated with the air cavity is formed in the bottom surface of the spherical cavity, and the first spherical body is rotatably mounted in the first spherical cavity; the bottom plate is provided with a supporting plate, the supporting plate is provided with a hole body which is used for the air tap to pass through and provide a rotating space for the air tap, the pushing plate is slidably matched with the supporting plate, and the pushing plate is provided with an arc-shaped cavity which is used for the second spherical body to be sleeved in and realize rotating connection;
The bottom plate comprises a bottom plate and an upper bottom plate which is mounted on the bottom plate in a fitting manner, a first arc-shaped concave hole with a large upper end and a small lower end is formed in the bottom plate, the lower end of the first arc-shaped concave hole is open, and the first arc-shaped concave holes are multiple and are equidistantly arranged along the length direction of the bottom plate; the upper bottom plate is provided with a second arc concave hole which corresponds to the first arc concave hole and is small in lower end and large in upper end, and a first spherical cavity with two open ends is formed between the first arc concave hole and the second arc concave hole.
2. The die quenching high pressure cooling tank as claimed in claim 1, wherein: the direction of the air outlet swing of the cooling nozzle assembly positioned on the side wall is perpendicular to the horizontal plane.
3. The die quenching high pressure cooling tank as claimed in claim 1, wherein: the cooling nozzle can realize intermittent air injection.
4. The die quenching high pressure cooling tank as claimed in claim 1, wherein: a plurality of partition boards are arranged in the air cavity, the partition boards divide the air cavity into subchambers with the same quantity as the mounting grooves, and the bottom surface of each subchamber is provided with a hole body communicated with the first spherical cavity.
5. The die quenching high pressure cooling tank as claimed in claim 1, wherein: the air cavity is connected with a pneumatic reversing valve, and nozzles in two adjacent mounting grooves are ejected alternately.
6. The die quenching high-pressure cooling tank as claimed in claim 5, wherein: the pneumatic reversing valve comprises a cylindrical valve body, an upper cavity and a lower cavity are formed in the valve body, a main shaft is rotatably arranged in the lower cavity, the upper end of the main shaft penetrates through the upper cavity and extends out of the valve body, a turbine positioned in the upper cavity and a sloping cam plate positioned in the lower cavity are arranged on the side wall of the main shaft, and an air inlet and an air outlet for driving the turbine to rotate and driving the main shaft to rotate are arranged on the side wall of the upper cavity; the bottom surface of the lower cavity is provided with at least two valve holes which are circumferentially and uniformly distributed around the axis of the main shaft, the lower end of the valve hole penetrates through the valve body and serves as an air outlet hole communicated with the air cavity, the side wall of the valve hole is provided with an air inlet hole, and the air inlet hole is connected with a cooling medium air source; the valve is characterized in that a valve core capable of realizing communication or blocking of an air inlet hole and an air outlet hole is slidably arranged in the valve hole, a spherical hinge is arranged at the upper end of the valve core, the spherical hinge is connected with a pressing disc, the top surface of the pressing disc is attached to the bottom surface of the swash plate and can realize mutual sliding, and when the swash plate rotates, the pressing disc can be pushed to swing, and each valve core can realize staggered reciprocating sliding.
7. The die quenching high-pressure cooling tank as claimed in claim 6, wherein: the valve body comprises a cylindrical valve body and a cylindrical shell which is coaxial with the valve body and is connected to the upper end of the valve body through threads, a partition board is arranged in the shell, the lower cavity is formed between the partition board and the upper end face of the valve body, a central hole for installing a main shaft is formed in the center of the upper end face of the valve body, valve holes are uniformly distributed circumferentially around the central hole, a cover plate is fixed at the top of the shell, and the upper cavity is formed between the cover plate and the partition board; the side wall of the valve body is provided with an annular groove, an annular cavity is formed between the annular groove and the inner wall of the shell, each air inlet hole is communicated with the annular cavity, and the side wall of the annular cavity is provided with an air inlet interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410095576.4A CN117778679B (en) | 2024-01-23 | 2024-01-23 | Mould quenching high-pressure cooling box |
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| CN202410095576.4A CN117778679B (en) | 2024-01-23 | 2024-01-23 | Mould quenching high-pressure cooling box |
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| CN117778679B true CN117778679B (en) | 2024-06-07 |
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| Publication number | Publication date |
|---|---|
| CN117778679A (en) | 2024-03-29 |
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