CN115076170A - High-frequency impact rolling device suitable for composite part - Google Patents
High-frequency impact rolling device suitable for composite part Download PDFInfo
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- CN115076170A CN115076170A CN202210669478.8A CN202210669478A CN115076170A CN 115076170 A CN115076170 A CN 115076170A CN 202210669478 A CN202210669478 A CN 202210669478A CN 115076170 A CN115076170 A CN 115076170A
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- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000005096 rolling process Methods 0.000 title claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 62
- 238000013016 damping Methods 0.000 claims description 28
- 230000035939 shock Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 12
- 239000000110 cooling liquid Substances 0.000 abstract description 5
- 238000005242 forging Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
- B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Metal Rolling (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention provides a high-frequency impact rolling device suitable for composite pieces. Comprises a frame, a lower roll component, an upper roll component, a stamping component and a cooling component which are arranged on the frame from bottom to top. The stamping assembly comprises an impact rod, an oil cavity, a reversing valve, a high-pressure oil pump and a low-pressure oil pump; the impact rod comprises a first step, a second part and a third part, and the second part, the first part and the third part are all arranged in the oil cavity in a penetrating mode. The first portion diameter is greater than the third portion diameter, and the first portion free end is movably connected with the upper roll assembly so that the impact bar has a vertical direction degree of freedom. The high-frequency up-and-down motion of the impact rod in the oil cavity is realized through the reversing valve, so that the forging and pressing impact action is applied to the composite part, and the quality of a combined surface is improved. The cooling assembly sequentially comprises a piston rod, an inflation cavity, a diaphragm cavity, a cooling pipeline and a nozzle, and one end of the piston rod is fixed with the free end of the third part. The piston rod and the impact rod move at the same frequency to generate pulse cooling liquid to eliminate a steam film, so that the rapid cooling is realized.
Description
Technical Field
The invention relates to the technical field of rolling mills, in particular to a high-frequency impact rolling device suitable for composite pieces.
Background
The composite part is a structure formed by compositing components made of various different materials according to actual use requirements. The composite part has important application in production practice because of the performance advantages of any one component.
Rolling is one of the common processing methods for such composites. However, since the conventional rolling mill is often used for processing a component made of a single material, only a roll structure for providing a constant rolling action to a raw material is provided in a rolling section of the rolling mill. The different components forming the composite part have different structures and performances, and the constant rolling action is difficult to provide effective bonding acting force for the different components in practice, so that the prepared composite part mostly has the defects of poor quality of bonding surfaces and even layering.
Meanwhile, the friction between the roll and the raw material during the rolling process may cause the temperature of the roll to rise, so that the roll needs to be properly cooled during the rolling process to be rapidly cooled. However, the cooling section in the conventional rolling mill does not consider the steam film formed on the roll surface at the initial stage of cooling, and therefore, it is difficult to perform rapid cooling.
Disclosure of Invention
The invention aims to provide a high-frequency impact rolling device suitable for a composite piece. The device is used for simultaneously solving the technical problems that the quality of the combined surface of the composite part is low and the roller is difficult to cool quickly in the process of rolling the composite part by using the existing rolling mill.
In order to achieve the above purpose, the invention provides the following technical scheme:
a high-frequency impact rolling device suitable for composite parts comprises a frame, a lower roll component, an upper roll component, a stamping component and a cooling component, wherein the lower roll component, the upper roll component, the stamping component and the cooling component are sequentially arranged on the frame from bottom to top;
the lower roll assembly and the upper roll assembly are arranged at intervals along the transverse direction of the vertical direction;
the stamping assembly comprises an impact rod, a shoulder piece, an oil cavity, a reversing valve, a high-pressure oil pump and a low-pressure oil pump; the impact rod comprises a first part, a second part and a third part which are fixed through the shoulder piece; the adjacent parts of the second part, the first part and the third part are all arranged in the oil cavity in a penetrating way, and the side periphery of the shoulder piece is attached to the oil cavity; the diameter of the first part is larger than that of the third part, and the free end of the first part is movably connected with the upper roll assembly so that the impact rod has a degree of freedom in the vertical direction; the oil cavity sequentially comprises a first oil port, a second oil port and a third oil port from bottom to top; the first oil port is connected with the high-pressure oil pump; the second oil port is connected with the low-pressure oil pump; the reversing valve comprises a valve body, a valve core, a high-pressure oil duct and a low-pressure oil duct, wherein the high-pressure oil duct and the low-pressure oil duct are arranged in the valve core; the lower oil port is positioned at the lower end of the valve body and is communicated with the second oil port; the upper oil port is positioned at the upper end of the valve body and is connected with the high-pressure oil pump; the oil outlet, the first oil inlet and the second oil inlet are all positioned on the side wall of the valve body, the first oil inlet is connected with the high-pressure oil pump, and the second oil inlet is connected with the low-pressure oil pump; one side of the oil outlet is communicated with the third oil port, and the other side of the oil outlet is communicated with the first oil inlet through the high-pressure oil duct or communicated with the second oil inlet through the low-pressure oil duct;
the cooling assembly comprises a piston rod, an inflation cavity, a diaphragm cavity, a cooling pipeline and a plurality of nozzles; one end of the piston rod is fixed with the vacant end of the third part, and the other end of the piston rod is fixed with the inflation cavity; the diaphragm cavity comprises a first cavity and a second cavity, the first cavity is communicated with the inflation cavity, the second cavity is simultaneously connected with an external cooling pipe and the cooling pipeline, the spare end of the cooling pipeline is connected with the nozzle, and the nozzle is uniformly arranged above the upper roll assembly at intervals.
Furthermore, the upper roll component comprises an upper roll, an upper roll sleeve, an upper rotating shaft device and a damping piece; the upper roller is transversely arranged, two ends of the upper roller are inserted into the upper roller sleeve, and one end of the upper roller is connected with the upper rotating shaft device; the damping piece comprises a connecting plate, a damping shaft and a damping spring; the connecting plate is clamped on the upper roller sleeve, one end of the damping shaft is fixed with the connecting plate, and the other end of the damping shaft is fixed with the rack; the damping spring is sleeved on the damping shaft; the connecting plate and the damping shaft are both of hollow structures, and cooling pipelines communicated with each other are distributed in the connecting plate and the damping shaft; the nozzles are uniformly arranged on the lower surface of the connecting plate at intervals.
Further, the cooling pipeline comprises a main pipeline, a transverse pipeline and a longitudinal pipeline which are sequentially communicated; the main pipeline is arranged in the damping shaft; the transverse pipelines and the longitudinal pipelines are located in the connecting plate, the transverse pipelines are transversely arranged, and the longitudinal pipelines are longitudinally and uniformly arranged at intervals.
Further, the upper roll assembly comprises an impact connecting seat, and the spare end of the first part is movably inserted into the impact connecting seat.
The device further comprises a PLC (programmable logic controller), wherein the input end of the PLC is used for acquiring the width of the composite piece to be processed, and the output end of the PLC is used for controlling each nozzle to spray according to the width of the composite piece.
Further, the lower roll component comprises a lower roll, a lower roll sleeve, a lower shaft rotating device and a lifting oil cylinder; the lower roller is transversely arranged, two ends of the lower roller are inserted into the lower roller sleeve, and one end of the lower roller is connected with the lower shaft rotating device; the lifting oil cylinder is fixed with the lower roller sleeve.
Furthermore, the lifting oil cylinder is a synchronous oil cylinder.
Furthermore, the stamping assembly comprises an energy accumulator, and the energy accumulator is communicated with the first oil port and is connected with the high-pressure oil pump.
Furthermore, a first check valve and a second check valve are arranged on the second cavity, the first check valve is arranged at the position where the first check valve is connected with an external cooling pipe, and the second check valve is arranged at the position where the second check valve is connected with the cooling pipeline.
Furthermore, the cooling assembly comprises a return spring, and the return spring is sleeved on the piston rod.
Has the advantages that:
from the above technical solutions, the technical solution of the present invention provides a novel rolling device to make it suitable for rolling of composite pieces.
The rolling device comprises a frame for supporting, and a lower roll component, an upper roll component, a stamping component and a cooling component which are sequentially arranged from bottom to top by relying on the frame. Wherein the lower roll assembly and the upper roll assembly are arranged at intervals along the vertical direction, and the raw material of the composite part is arranged in the gap between the lower roll assembly and the upper roll assembly.
The stamping assembly comprises an impact rod, a shoulder piece, an oil cavity, a reversing valve, a high-pressure oil pump and a low-pressure oil pump. The impact rod comprises a first part, a second part and a third part which are fixed through the shoulder piece; the adjacent parts of the second part, the first part and the third part are all arranged in the oil cavity in a penetrating way, and the side periphery of the shoulder piece is attached to the oil cavity; the diameter of the first part is larger than that of the third part, and the free end of the first part is movably connected with the upper roll assembly so that the impact rod has a degree of freedom in the vertical direction; the oil cavity sequentially comprises a first oil port, a second oil port and a third oil port from bottom to top; the first oil port is connected with the high-pressure oil pump; the second oil port is connected with the low-pressure oil pump; the reversing valve comprises a valve body, a valve core, a high-pressure oil duct and a low-pressure oil duct, wherein the high-pressure oil duct and the low-pressure oil duct are arranged in the valve core; the lower oil port is positioned at the lower end of the valve body and is communicated with the second oil port; the upper oil port is positioned at the upper end of the valve body and is connected with the high-pressure oil pump; the oil outlet, the first oil inlet and the second oil inlet are all positioned on the side wall of the valve body, the oil outlet is communicated with the third oil port, the first oil inlet is connected with the high-pressure oil pump, and the second oil inlet is connected with the low-pressure oil pump; the oil outlet is communicated with the first oil inlet through the high-pressure oil duct or communicated with the second oil inlet through the low-pressure oil duct.
Thus, at the start of rolling, the impact bar is in the lower position under the influence of gravity. And then, the high-pressure oil pump inputs high-pressure oil to the bottom of the oil cavity through the first oil port, and inputs the high-pressure oil to the upper part of the reversing valve through the upper oil port. Meanwhile, the oil outlet is communicated with the second oil inlet through the low-pressure oil duct, so that low-pressure oil is input to the top of the oil cavity by the low-pressure oil pump. At the moment, under the action of high-pressure oil and low-pressure oil at two ends of the oil cavity, the impact rod moves upwards.
When the impact rod moves upwards to pass through the second oil port, high-pressure oil in the oil cavity sequentially passes through the second oil port and the lower oil port to enter the bottom of the reversing valve. At the moment, the bottom and the top of the reversing valve are filled with high-pressure oil, but the diameter of the lower oil port is smaller than that of the upper oil port, so that the valve core is jacked and pressed to move upwards, and the oil outlet is communicated with the first oil inlet through the high-pressure oil duct. And then, high-pressure oil enters the top of the oil cavity through the third oil port, and the top and the bottom of the oil cavity are filled with the high-pressure oil. However, since the diameter of the first portion is larger than that of the third portion, the impact rod is pressed to move downwards, and the forging impact force when the impact rod is pressed downwards acts on the raw material of the composite part. By the high-frequency circulating stamping action of the impact rod, the metal grains of the raw material contact surfaces of different materials are refined, even if the raw material contact surfaces are subjected to micro-bonding. And further improves the combination degree of the contact surface, namely the processing quality of the composite piece.
Meanwhile, the cooling assembly comprises a piston rod, an inflation cavity, a diaphragm cavity, a cooling pipeline and a plurality of nozzles; one end of the piston rod is fixed with the vacant end of the third part, and the other end of the piston rod is fixed with the inflation cavity; the diaphragm cavity is divided into a first cavity and a second cavity through a diaphragm, the first cavity is connected with the inflation cavity, the second cavity is simultaneously connected with an external cooling pipe and the cooling pipeline, the spare end of the cooling pipeline is connected with the nozzle, and the nozzle is uniformly arranged above the upper roll assembly at intervals.
Therefore, when the impact rod moves up and down at high frequency, the impact rod sequentially passes through the piston rod and the inflation cavity to drive the diaphragm in the diaphragm cavity to deform. When the diaphragm is moved to the side of the first chamber, the cooling fluid is introduced into the second chamber through the external cooling pipe. When the diaphragm moves towards the side of the second chamber, the cooling liquid is led into the nozzle through the cooling pipeline. The high-frequency pulse water pressure generated at the moment breaks through the steam films on the surfaces of the upper roll assembly and the lower roll assembly, and then the rapid cooling of the upper roll assembly and the lower roll assembly is realized.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments according to the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a front view of a high frequency impact rolling apparatus suitable for composite parts according to the present invention;
FIG. 2 is an exploded view of the lower roll assembly and the upper roll assembly of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is an enlarged view taken at A in FIG. 1;
fig. 5 is an enlarged view at B in fig. 1.
The reference numbers in the figures are: 1 is a frame, 2 is a lower roll component, 3 is an upper roll component, 4 is a stamping component, and 5 is a cooling component; 21 is a lower roller, 22 is a lower roller sleeve, 23 is a lower shaft rotating device, and 24 is a lifting oil cylinder; 31 is an upper roller, 32 is an upper roller sleeve, 33 is an upper rotating shaft device, 34 is a damping piece, and 35 is an impact connecting seat; 41 is an impact rod, 42 is a shoulder part, 43 is an oil cavity, 44 is a reversing valve, and 45 is an energy accumulator; 51 is a piston rod, 52 is a return spring, 53 is an inflation cavity, 54 is a diaphragm cavity, and 55 is a cooling pipeline; 341 is a connecting plate, 342 is a damping shaft, 343 is a damping spring; 411 is a first portion, 412 is a second portion, 413 is a third portion; 431 is a first oil port, 432 is a second oil port, 433 is a third oil port, 434 is a first oil return port, and 435 is a second oil return port; 441 is a valve body, 442 is a valve core; 541 is a first chamber, 542 is a second chamber, 543 is a diaphragm; 551 is a main pipeline, 552 is a transverse pipeline, and 553 is a longitudinal pipeline; 441a is a lower oil port, 441b is an upper oil port, 441c is an oil outlet, 441d is a first oil inlet, and 441e is a second oil inlet; 442a is a high pressure oil passage and 442b is a low pressure oil passage; 542a is a first check valve, and 542b is a second check valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the singular forms "a," "an," or "the" do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The terms "comprises," "comprising," or the like, mean that the elements or items listed before "comprises" or "comprising" encompass the features, integers, steps, operations, elements, and/or components listed after "comprising" or "comprising," and do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may also be changed accordingly.
Since the existing rolling mill is designed to roll a single material member, the quality of a joint surface is low when rolling a plurality of layers of composite materials made of different materials. And the roller is affected by a steam film on the surface of the roller, and the defect that the roller is difficult to rapidly cool is also existed. The invention aims to provide a high-frequency impact rolling device suitable for composite parts, which overcomes the defects of the existing rolling mill during composite part rolling through the mutual matching action of the stamping assembly and the cooling assembly.
As shown in fig. 1-5, the apparatus includes a frame 1, and a lower roll assembly 2, an upper roll assembly 3, a stamping assembly 4 and a cooling assembly 5, which are sequentially disposed on the frame 1 from bottom to top.
The lower roll assembly 2 is laterally spaced from the upper roll assembly 3 in a vertical direction.
Specifically, the lower roll assembly 2 includes a lower roll 21, a lower roll sleeve 22, a lower shaft rotating device 23 and a lift cylinder 24. The lower roller 21 is transversely arranged, two ends of the lower roller are inserted into the lower roller sleeve 22, and one end of the lower roller is connected with the lower shaft rotating device 23; the lifting oil cylinder 24 is fixed with the lower roll sleeve 22. The upper roll assembly 3 comprises an upper roll 31, an upper roll sleeve 32 and an upper shaft rotating device 33. The upper roller 31 is transversely arranged, two ends of the upper roller are inserted into the upper roller sleeve 32, and one end of the upper roller is connected with the upper rotating shaft device 33.
When rolling the composite, the lift cylinder 24 is adjusted to make the gap between the upper roller 31 and the lower roller 21 equal to the thickness of the composite to be processed. At this time, the motor is turned on, and the lower roller 21 and the upper roller 31 are rotated by the lower spindle unit 23 and the upper spindle unit 33, respectively. To laminate the composite stock material passing through their gaps.
In order to improve the uniformity of the thickness of the rolled composite, the lifting cylinder 24 is a synchronous cylinder.
The punching assembly 4 comprises an impact rod 41, a shoulder piece 42, an oil cavity 43, a reversing valve 44, a high-pressure oil pump and a low-pressure oil pump. High-pressure oil in the high-pressure oil pump enters the device through the high-pressure oil port, and low-pressure oil in the low-pressure oil pump enters the device through the low-pressure oil port.
The striking rod 41 includes a first portion 411, a second portion 412, and a third portion 413 fixed by the shoulder member 42. The second portion 412, and the adjacent portions of the first portion 411 and the third portion 413 are all disposed in the oil chamber 43, and the side circumference of the shoulder member 42 is attached to the oil chamber 43. The diameter of the first portion 411 is larger than that of the third portion 413, and the free end of the first portion 411 is movably connected to the upper roll assembly 3 to allow the impact bar 41 to have a degree of freedom in a vertical direction.
The oil chamber 43 sequentially comprises a first oil port 431, a second oil port 432 and a third oil port 433 from bottom to top; the first oil port 431 is connected with the high-pressure oil pump; the second oil port 432 is connected to the low pressure oil pump.
The direction valve 44 includes a valve body 441, a valve spool 442, and a high-pressure oil passage 442a and a low-pressure oil passage 442b provided in the valve spool 442. The valve body 441 comprises a lower oil port 441a, an upper oil port 441b, an oil outlet 441c, a first oil inlet 441d, and a second oil inlet 441e, wherein the diameter of the lower oil port 441a is smaller than that of the upper oil port 441 b. The lower oil port 441a is positioned at the lower end of the valve body 441 and is communicated with the second oil port 432; the upper oil port 441b is positioned at the upper end of the valve body 441 and is connected with the high-pressure oil pump; the oil outlet 441c, the first oil inlet 441d and the second oil inlet 441e are all located on the side wall of the valve body 441, the oil outlet 441c is communicated with the third oil port 433, the first oil inlet 441d is connected with the high-pressure oil pump, and the second oil inlet 441e is connected with the low-pressure oil pump. The oil outlet 441c is communicated with the first oil inlet 441d through the high-pressure oil passage 442a, or is communicated with the second oil inlet 441e through the low-pressure oil passage 442 b.
The cooling assembly 5 comprises a piston rod 51, a gas filling cavity 53, a diaphragm cavity 54, a cooling pipeline 55 and a plurality of nozzles. One end of the piston rod 51 is fixed to the free end of the third portion 413, and the other end is fixed to the inflation cavity 53. The diaphragm chamber 54 is divided into a first chamber 541 and a second chamber 542 by a diaphragm 543. The first chamber 541 is connected to the gas filling chamber 53, the second chamber 542 is simultaneously connected to an external cooling pipe and the cooling duct 55, and the free end of the cooling duct 55 is connected to the nozzles which are uniformly spaced above the upper roll assembly 3.
At the start of rolling, the striking rod 41 is in the lower position under the action of gravity. Then, the high pressure oil pump inputs high pressure oil to the bottom of the oil chamber 43 through the first port 431, and inputs high pressure oil to the upper portion of the direction valve 44 through the upper port 441 b. Meanwhile, the oil outlet 441c will communicate with the second oil inlet 441e through the low pressure oil passage 442b, so that the low pressure oil pump will input low pressure oil to the top of the oil chamber 43. At this time, the striking rod 41 will move upward under the action of the high-pressure oil and the low-pressure oil at the two ends of the oil chamber 43.
When the striking rod 41 moves upward through the second oil port 432, the high-pressure oil in the oil chamber 43 sequentially passes through the second oil port 432 and the lower oil port 441a to enter the bottom of the direction change valve 44. At this time, both the bottom and the top of the direction valve 44 are filled with high-pressure oil, but since the diameter of the lower oil port 441a is smaller than that of the upper oil port 441b, the valve element 442 is pressed and moved upward, so that the oil outlet 441c is communicated with the first oil inlet 441d through the high-pressure oil passage 442 a. Then, the high pressure oil enters the top of the oil chamber 43 through the third oil port 433, and the top and the bottom of the oil chamber 43 are filled with the high pressure oil. However, since the diameter of the first portion 411 is larger than that of the third portion 413, the striking rod 41 is pressed downward, and the forging impact force is applied to the raw material of the composite material. By the above-mentioned high-frequency cyclic punching action of the impact bar 41, the material contact surfaces of different materials are refined in metal grains, even if they are micro-bonded. And further improves the combination degree of the contact surface, namely the processing quality of the composite piece.
Meanwhile, when the impact rod 41 moves up and down at high frequency, the diaphragm 543 in the diaphragm cavity 54 is driven to deform through the piston rod 51 and the inflation cavity 53 in sequence. At this time, when the diaphragm 543 moves toward the first chamber 541 side, the cooling fluid is introduced into the second chamber 542 through the external cooling tube. When the diaphragm 543 moves toward the second chamber 542, the cooling liquid in the second chamber 542 is introduced into the nozzle through the cooling duct 55. The high-frequency pulse water pressure generated at the moment breaks through the steam films on the surfaces of the upper roll assembly 3 and the lower roll assembly 2, and further the rapid cooling of the upper roll assembly and the lower roll assembly is realized.
In order to facilitate the discharge of high-pressure oil or low-pressure oil during the up-and-down movement for reuse, the oil chamber 43 includes a first oil return port 434, and the first oil return port 434 is located between the first oil port 431 and the second oil port 432 and is connected to the high-pressure oil pump.
Similarly, the oil chamber 43 is provided to include a second oil return port 435, and the second oil return port 435 is located between the second oil port 432 and the third oil port 433, and is connected to the low-pressure oil pump.
As an alternative embodiment, the force applied when the striking rod 41 moves upward is increased. The punch assembly 4 is arranged to include an accumulator 45. The accumulator 45 is communicated with the first oil port 431 and connected with the high-pressure oil pump.
As another alternative, the force applied when the striking rod 41 moves downward is increased. The cooling assembly 5 is provided with a return spring 52, and the return spring 52 is sleeved on the piston rod 51. At this time, the compression restoring action of the return spring 52 will be transmitted to the striking rod 41 downward.
In order to cushion the constant rolling action between the upper roll assembly 3 and the lower roll assembly 2 to improve the service life of the apparatus, the upper roll assembly 3 is provided with a shock absorbing member 34. The shock absorbing member 34 includes a connection plate 341, a shock absorbing shaft 342, and a shock absorbing spring 343. The connecting plate 341 is clamped on the upper roll sleeve 32, one end of the damping shaft 342 is fixed with the connecting plate 341, and the other end is fixed with the frame 1. The damping spring 343 is sleeved on the damping shaft 342.
In order to guide the forging impact action of the impact bar 41, the upper roll assembly 3 is provided with an impact connection socket 35. At this time, the spare end of the first portion 411 is movably inserted into the impact connection seat 35.
In order to simplify the overall structure of the device and to effectively protect the cooling duct 55 to improve the overall service life of the device. The connecting plate 341 and the shock absorbing shaft 342 are both hollow structures, and cooling pipes 55 communicated with each other are arranged in the connecting plate and the shock absorbing shaft. At this time, the nozzles are uniformly spaced on the lower surface of the connection plate 341.
Specifically, in order to uniformly distribute the pulse cooling liquid on the upper roll assembly 3 and the lower roll assembly 2, the cooling pipeline 55 comprises a main pipeline 551, a transverse pipeline 552 and a longitudinal pipeline 553 which are sequentially communicated. The main pipeline 551 is arranged in the damping shaft 342; the transverse pipes 552 and the longitudinal pipes 553 are both located in the connecting plate 341, the transverse pipes 552 are arranged transversely, and the longitudinal pipes 553 are arranged longitudinally at regular intervals. At this time, the cooling liquid in the cooling duct 55 is uniformly sprayed to the upper roll assembly 3 and the lower roll assembly 2, thereby enhancing the cooling effect.
In order to perform a targeted cooling depending on the size of the rolled composite. The device is also provided with a PLC controller. The input end of the PLC is used for acquiring the width of a composite piece to be processed, and the output end of the PLC is used for controlling each nozzle to spray according to the width of the composite piece.
In order to prevent the coolant from leaking, the second chamber 542 is provided with a first check valve 542a and a second check valve 542 b. Specifically, the first check valve 542a is disposed at a connection point of the first check valve and an external cooling pipe, and is communicated with the second chamber 542 in a one-way manner through the external cooling pipe. The second check valve 542b is disposed at a connection point of the second check valve 542b and is in one-way communication with the cooling duct 55 from the second chamber 542.
Specifically, the diaphragm 543 is made of an elastic and corrosion-resistant metal sheet or a phenanthrene metal sheet.
The device can be used for various composite parts formed by compounding multiple layers of raw materials made of different materials. The composite member in this embodiment is specifically a stainless steel composite sheet. It is formed by rolling and compounding a carbon steel sheet and a stainless steel sheet. The stainless steel composite sheet rolled by the device has good quality of a bonding surface, and has the advantages of high hardness, high strength, good chemical stability and strong plasticity.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. A high-frequency impact rolling device suitable for composite parts is characterized by comprising a frame, a lower roll component, an upper roll component, a stamping component and a cooling component, wherein the lower roll component, the upper roll component, the stamping component and the cooling component are sequentially arranged on the frame from bottom to top;
the lower roll assembly and the upper roll assembly are arranged at intervals along the transverse direction of the vertical direction;
the stamping assembly comprises an impact rod, a shoulder piece, an oil cavity, a reversing valve, a high-pressure oil pump and a low-pressure oil pump; the impact rod comprises a first part, a second part and a third part which are fixed through the shoulder piece; the second part, the adjacent parts of the first part and the third part penetrate through the oil cavity, and the side periphery of the shoulder piece is attached to the oil cavity; the diameter of the first part is larger than that of the third part, and the free end of the first part is movably connected with the upper roll assembly so that the impact rod has a degree of freedom in the vertical direction; the oil cavity sequentially comprises a first oil port, a second oil port and a third oil port from bottom to top; the first oil port is connected with the high-pressure oil pump; the second oil port is connected with the low-pressure oil pump; the reversing valve comprises a valve body, a valve core, a high-pressure oil duct and a low-pressure oil duct, wherein the high-pressure oil duct and the low-pressure oil duct are arranged in the valve core; the lower oil port is positioned at the lower end of the valve body and is communicated with the second oil port; the upper oil port is positioned at the upper end of the valve body and is connected with the high-pressure oil pump; the oil outlet, the first oil inlet and the second oil inlet are all positioned on the side wall of the valve body, the first oil inlet is connected with the high-pressure oil pump, and the second oil inlet is connected with the low-pressure oil pump; one side of the oil outlet is communicated with the third oil port, and the other side of the oil outlet is communicated with the first oil inlet through the high-pressure oil duct or communicated with the second oil inlet through the low-pressure oil duct;
the cooling assembly comprises a piston rod, an inflation cavity, a diaphragm cavity, a cooling pipeline and a plurality of nozzles; one end of the piston rod is fixed with the spare end of the third part, and the other end of the piston rod is fixed with the inflation cavity; the diaphragm cavity comprises a first cavity and a second cavity, the first cavity is communicated with the inflation cavity, the second cavity is simultaneously connected with an external cooling pipe and the cooling pipeline, the spare end of the cooling pipeline is connected with the nozzle, and the nozzle is uniformly arranged above the upper roll assembly at intervals.
2. The high frequency impact rolling device suitable for composite members according to claim 1, wherein said upper roll assembly comprises an upper roll, an upper roll housing, an upper spindle and a shock absorber; the upper roller is transversely arranged, two ends of the upper roller are inserted into the upper roller sleeve, and one end of the upper roller is connected with the upper rotating shaft device; the damping part comprises a connecting plate, a damping shaft and a damping spring; the connecting plate is clamped on the upper roller sleeve, one end of the damping shaft is fixed with the connecting plate, and the other end of the damping shaft is fixed with the rack; the damping spring is sleeved on the damping shaft; the connecting plate and the damping shaft are both of hollow structures, and cooling pipelines communicated with each other are distributed in the connecting plate and the damping shaft; the nozzles are uniformly arranged on the lower surface of the connecting plate at intervals.
3. A high-frequency impact rolling device suitable for composite pieces according to claim 2, wherein said cooling ducts comprise a main duct, a transverse duct and a longitudinal duct, which are in communication in sequence; the main pipeline is arranged in the damping shaft; the transverse pipelines and the longitudinal pipelines are located in the connecting plate, the transverse pipelines are transversely arranged, and the longitudinal pipelines are longitudinally and uniformly arranged at intervals.
4. A high frequency impact rolling apparatus for composite members according to claim 2 wherein said upper roll assembly includes an impact connection seat into which a free end of said first portion is movably inserted.
5. A high-frequency impact rolling apparatus for composite pieces according to claim 1, comprising a PLC controller having an input for obtaining the width of the composite piece to be processed and an output for controlling each of said nozzles to spray according to the width of the composite piece.
6. The high frequency impact rolling device suitable for composite members according to claim 1, wherein said lower roll assembly comprises a lower roll, a lower roll shell, a lower shaft adapter and a lift cylinder; the lower roller is transversely arranged, two ends of the lower roller are inserted into the lower roller sleeve, and one end of the lower roller is connected with the lower shaft rotating device; the lifting oil cylinder is fixed with the lower roller sleeve.
7. A high-frequency impact rolling apparatus for composite members according to claim 6 wherein said lift cylinders are synchronous cylinders.
8. The high frequency impact rolling apparatus for composite pieces according to claim 1, wherein the ram assembly comprises an accumulator in communication with the first oil port and connected to the high pressure oil pump.
9. A high-frequency impact rolling device suitable for composite pieces according to claim 1, wherein a first check valve and a second check valve are arranged on the second cavity, the first check valve is arranged at the position where the first check valve is connected with an external cooling pipe, and the second check valve is arranged at the position where the second check valve is connected with the cooling pipe.
10. A high-frequency impact rolling apparatus for composite pieces according to claim 1, wherein said cooling assembly comprises a return spring, said return spring being fitted over said piston rod.
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| CN115076170B (en) | 2024-06-04 |
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