CN114771000A - Carrier friction plate forming device - Google Patents
Carrier friction plate forming device Download PDFInfo
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- CN114771000A CN114771000A CN202210390388.5A CN202210390388A CN114771000A CN 114771000 A CN114771000 A CN 114771000A CN 202210390388 A CN202210390388 A CN 202210390388A CN 114771000 A CN114771000 A CN 114771000A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/166—Electrical control arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/22—Control arrangements for fluid-driven presses controlling the degree of pressure applied by the ram during the pressing stroke
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
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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)
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- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention belongs to the field of design of forming equipment, and discloses a forming device for friction plates of a trolley, which comprises an equipment base, a hydraulic oil circuit system, a pressure detection system, a temperature detection system, a displacement detection system and a control system, wherein the hydraulic oil circuit system is connected with the equipment base through a hydraulic oil circuit; the equipment base is provided with a groove plate and an auxiliary hydraulic cylinder, the groove plate is provided with a guide post and a fixed plate, the guide post is sequentially sleeved with a movable cross beam and a fixed cross beam, the fixed cross beam is provided with a main hydraulic cylinder, a piston rod of the main hydraulic cylinder penetrates through a through hole formed in the fixed cross beam to be connected with the movable cross beam, and one side of the movable cross beam, which is close to the fixed plate, is provided with a friction plate male die; a female die base is arranged on the fixing plate, and a material conveying plate and a friction plate female die are arranged on the female die base; the piston rod of the auxiliary hydraulic cylinder is connected with the material conveying plate, and a plurality of heating pipes are arranged in the material conveying plate and the female die base. The design scheme of the special preparation equipment for the special friction plate is provided, the problems that the friction plate is difficult to manufacture, the production period is long and the like can be solved, and the floor operation of the vehicle is promoted.
Description
Technical Field
The invention belongs to the field of design of forming equipment, and relates to a forming device for friction plates of a trolley.
Background
At present, passenger baggage transportation in airports has poor flexibility and consumes a large amount of manpower and material resources, which becomes a pain point problem which is closely concerned by the airport transportation industry. The unmanned technology is a research hotspot in the field of artificial intelligence at present and is a feasible research and development idea for solving the pain point problem. To apply the artificial intelligence technology to actual airport business, reliable real vehicle support is inevitably required for landing application.
The friction plate is an important link for completing decision instructions of the intelligent luggage van, and the operation decision of the automatic driving group vehicles in different driving scenes needs hardware equipment to be matched to complete accurate control. However, the friction plate is generally a special piece, the specification of which is limited, and the friction plate is produced by a professional manufacturer, so that the friction plate is difficult to be applied to the intelligent baggage trolley for the airport, which is flexible in type selection and adopts the special friction plate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a forming device for a friction plate of a trolley, so that the cost and the processing difficulty of the friction plate of the trolley are reduced.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a friction plate forming device of a trolley comprises an equipment base, a hydraulic oil circuit system, a pressure detection system, a temperature detection system, a displacement detection system and a control system;
the equipment base is provided with a groove plate and an auxiliary hydraulic cylinder, the groove plate is provided with a guide post and a movable fixing plate, the guide post is sequentially sleeved with a movable cross beam and a fixed cross beam, the fixed cross beam is provided with a main hydraulic cylinder, a piston rod of the main hydraulic cylinder penetrates through a through hole formed in the fixed cross beam to be connected with the movable cross beam, and one side of the movable cross beam, which is close to the fixing plate, is provided with a friction plate male die; a female die base is arranged on the fixing plate, a material conveying plate is arranged on the female die base, a female die through hole is formed in the material conveying plate, and a friction plate female die connected with the fixing plate is arranged in the female die through hole; a piston rod of the auxiliary hydraulic cylinder is connected with the material conveying plate, a plurality of heating pipes are arranged in the material conveying plate and the female die base, and the main hydraulic cylinder and the auxiliary hydraulic cylinder are connected with a hydraulic oil circuit system; the temperature detection system, the heating pipe, the hydraulic oil circuit system, the pressure detection system and the displacement detection system are all connected with the control system;
the temperature detection system is used for detecting the current forming temperature and sending the current forming temperature to the control system, the pressure detection system is used for detecting the pressure of a rod cavity of the main hydraulic cylinder and the pressure of a rod cavity of the auxiliary hydraulic cylinder and sending the pressure to the control system, the displacement detection system is used for detecting the displacement of the movable cross beam and sending the displacement to the control system, the control system is used for controlling the heating power of the heating pipe according to the current forming temperature and the preset forming temperature, and controlling the expansion of a piston rod of the main hydraulic cylinder and the expansion of a piston rod of the auxiliary hydraulic cylinder through the hydraulic oil circuit system according to the pressure of the rod cavity of the main hydraulic cylinder, the pressure of the rod cavity of the auxiliary hydraulic cylinder and the displacement of the movable cross beam.
Optionally, the hydraulic oil path system includes a first two-position two-way reversing valve, an overflow valve, a motor, a fixed displacement pump, a pressure relay, an energy accumulator, a first three-position four-way reversing valve, a second two-position two-way reversing valve, a throttle valve, a check valve and a second three-position four-way reversing valve;
one end of the fixed displacement pump is connected with the motor, the other end of the fixed displacement pump is connected with the overflow valve, the energy accumulator, a first position of the first three-position four-way reversing valve and a first position of the second three-position four-way reversing valve, the first two-position two-way reversing valve is connected with the overflow valve, the pressure relay is connected with the energy accumulator, the second two-position two-way reversing valve, the throttle valve and the check valve are connected in parallel to form a current limiting unit, one end of the current limiting unit is connected with the rod cavity of the main hydraulic cylinder, the other end of the current limiting unit is connected with a second position of the first three-position four-way reversing valve, and the third position of the first three-position four-way reversing valve is connected with the rodless cavity of the main hydraulic cylinder; the second position of the second three-position four-way reversing valve is connected with the rod cavity of the auxiliary hydraulic cylinder, and the third position of the second three-position four-way reversing valve is connected with the rodless cavity of the auxiliary hydraulic cylinder.
Optionally, the pressure detection system includes a first pressure gauge, a first pressure sensor, a second pressure gauge and a second pressure sensor, the first pressure gauge and the first pressure sensor are all connected with the rod cavity of the master hydraulic cylinder, and the second pressure gauge and the second pressure sensor are all connected with the rod cavity of the auxiliary hydraulic cylinder.
Optionally, the movable cross beam and the fixed cross beam both adopt box structures.
Optionally, the guide post satisfies:
and epsilon is less than or equal to epsilon']；
Wherein s is a preset safety factor, F is a nominal pressure applied to the guide column, d is the diameter of the guide column, z is the number of the guide columns, and sigma isbIn order to provide the tensile strength of the guide post material,
e is the elastic modulus of the guide post material, A is the section area of the guide post, l is the length of the deformed part of the guide post, and epsilon' is the strain range of the guide post material.
Optionally, the forming groove on the friction plate female die is provided with a gradient of 2-4 degrees.
Optionally, a fan is further arranged on the equipment base and connected with a control system, and the control system is used for controlling the operating power of the fan according to the current forming temperature and the preset forming temperature.
Optionally, a plurality of T-shaped grooves are formed in the groove plate, a plurality of T-shaped bolts are arranged on the fixing plate, and the plurality of T-shaped bolts penetrate through the fixing plate and are connected with the plurality of T-shaped grooves.
Optionally, the movable cross beam is connected with the guide post by using a flange linear bearing.
Optionally, the friction plate male die and the friction plate female die are both made of CrWMn materials.
Compared with the prior art, the invention has the following beneficial effects:
the friction plate forming device of the consignment vehicle of the invention has the advantages that through the control system, according to the pressure of the rod cavity of the main hydraulic cylinder, the pressure of the rod cavity of the auxiliary hydraulic cylinder and the displacement of the movable cross beam, the extension and contraction of the piston rod of the main hydraulic cylinder and the extension and contraction of the piston rod of the auxiliary hydraulic cylinder are controlled by a hydraulic oil circuit system, through the expansion and contraction of the piston rod of the main hydraulic cylinder, the movable cross beam is driven to drive the male die of the friction plate to approach the female die of the friction plate and extrude the friction plate raw material between the male die of the friction plate and the female die of the friction plate, the friction plates are formed under the heating of a plurality of heating pipes arranged in the material conveying plate and the female die base, then the piston rod of the auxiliary hydraulic cylinder extends and retracts to drive the material conveying plate to convey the formed friction plate, the preparation of the whole friction plate is completed, the equipment suitable for preparing various friction plates is provided, the friction plate is simple in structure, convenient to control and low in production cost, and the problems that the conventional friction plate is difficult to prepare and the production period is long are effectively solved.
Drawings
FIG. 1 is a schematic structural view of a friction plate forming device of a consignment vehicle according to an embodiment of the invention;
FIG. 2 is a schematic view of a heating tube installation according to an embodiment of the present invention;
FIG. 3 is an isometric view of a friction lining forming device of a consignment cart in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a hydraulic oil circuit system according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a MAX31855 temperature measurement circuit structure according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a heating pipe control circuit according to an embodiment of the present invention;
FIG. 7 is a schematic control diagram of a control system according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a control detection principle according to an embodiment of the present invention.
Wherein: 1-equipment base; 2-a female die base; 3-a movable cross beam; 4-hydraulic oil circuit system; 5-main hydraulic cylinder; 6-fixing the cross beam; 7-friction plate male die; 8-a guide post; 9-a friction plate female die; 10-transporting plate; 11-a fixed plate; 12-a channel plate; 13-heating the tube; 14-a first two-position two-way directional valve; 15-an overflow valve; 16-an electric machine; 17-a fixed displacement pump; 18-a pressure relay; 19-an accumulator; 20-a first three-position four-way reversing valve; 21-a first pressure gauge; 22-a first pressure sensor; 23-a second two-position two-way directional valve; 24-a throttle valve; 25-a one-way valve; 26-auxiliary hydraulic cylinder; 27-a second pressure gauge; 28-a second pressure sensor; 29-a second three-position four-way reversing valve.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 to 3, in an embodiment of the present invention, a forming device for friction plates of a trolley is provided, which includes an equipment base 1, a hydraulic oil path system 4, a pressure detection system, a temperature detection system, a displacement detection system, and a control system; the equipment base 1 is provided with a groove plate 12 and an auxiliary hydraulic cylinder 26, the groove plate 12 is provided with a guide post 8 and a movable fixing plate 11, the guide post 8 is sequentially sleeved with a movable cross beam 3 and a fixed cross beam 6, the fixed cross beam 6 is provided with a main hydraulic cylinder 5, a piston rod of the main hydraulic cylinder 5 penetrates through a through hole formed in the fixed cross beam 6 to be connected with the movable cross beam 3, and one side of the movable cross beam 3, which is close to the fixing plate 11, is provided with a friction plate male die 7; a female die base 2 is arranged on the fixed plate 11, a material conveying plate 10 is arranged on the female die base 2, a female die through hole is formed in the material conveying plate 10, and a friction plate female die 9 connected with the fixed plate 11 is arranged in the female die through hole; a piston rod of the auxiliary hydraulic cylinder 26 is connected with the material conveying plate 10, a plurality of heating pipes 13 are arranged in the material conveying plate 10 and the female die base 2, and the main hydraulic cylinder 5 and the auxiliary hydraulic cylinder 26 are connected with the hydraulic oil circuit system 4; the temperature detection system, the heating pipe 13, the hydraulic oil circuit system 4, the pressure detection system and the displacement detection system are all connected with the control system.
The temperature detection system is used for detecting the current forming temperature and sending to control system, the pressure detection system is used for detecting that master cylinder 5 has pole chamber pressure and vice pneumatic cylinder 26 has pole chamber pressure and sends to control system, the displacement detection system is used for detecting the displacement volume of movable cross beam 3 and sends to control system, control system is used for according to current forming temperature and predetermine the heating power of forming temperature control heating pipe 13, and according to master cylinder 5 has pole chamber pressure, vice pneumatic cylinder 26 has pole chamber pressure and movable cross beam 3's displacement volume, the flexible of the flexible and vice pneumatic cylinder 26 piston rod of master cylinder 5 piston rod is controlled through hydraulic oil piping system 4.
Optionally, referring to fig. 4, the hydraulic oil circuit system 4 includes a first two-position two-way reversing valve 14, an overflow valve 15, a motor 16, a fixed displacement pump 17, a pressure relay 18, an accumulator 19, a first three-position four-way reversing valve 20, a second two-position two-way reversing valve 23, a throttle valve 24, a check valve 25, and a second three-position four-way reversing valve 29; one end of the fixed displacement pump 17 is connected with the motor 16, the other end of the fixed displacement pump is connected with the overflow valve 15, the energy accumulator 19, the first position of the first three-position four-way reversing valve 20 and the first position of the second three-position four-way reversing valve 29, the first two-position two-way reversing valve 14 is connected with the overflow valve 15, the pressure relay 18 is connected with the energy accumulator 19, the second two-position two-way reversing valve 23, the throttle valve 24 and the check valve 25 are connected in parallel to form a current limiting unit, one end of the current limiting unit is connected with the rod cavity of the main hydraulic cylinder 5, the other end of the current limiting unit is connected with the second position of the first three-position four-way reversing valve 20, and the third position of the first three-position four-way reversing valve 20 is connected with the rodless cavity of the main hydraulic cylinder 5; the second three-position four-way reversing valve 29 is connected with a rod cavity of the auxiliary hydraulic cylinder 26 at the second position, the second three-position four-way reversing valve 29 is connected with a rodless cavity of the auxiliary hydraulic cylinder 26 at the third position, hydraulic oil of the fixed displacement pump 17 is output to the energy accumulator 19, the main hydraulic cylinder 5 and the auxiliary hydraulic cylinder 26, the rest of oil flows through the overflow valve 15 and flows back to the oil tank, the energy accumulator 19 is controlled by the pressure relay 18, the input of the main hydraulic cylinder 5 is controlled by the first three-position four-way reversing valve 20, the output of the main hydraulic cylinder 5 is controlled by the two-position two-way reversing valve, the throttle valve 24 and the check valve 25, and the auxiliary hydraulic cylinder 26 is controlled by the second three-position four-way reversing valve 29.
The accumulator 19, the pressure relay 18 and the overflow valve 15 form a pressure maintaining loop, and the second two-position two-way reversing valve 23, the throttle valve 24 and the check valve 25 form a speed regulating loop so as to meet the fast feeding, working feeding and fast retreating functions of extrusion forming work. The main hydraulic cylinder 5 moves vertically for extrusion work, and the sub-hydraulic cylinder 26 moves horizontally for carrying friction plates.
Optionally, the pressure detecting system includes a first pressure gauge 21, a first pressure sensor 22, a second pressure gauge 27 and a second pressure sensor 28, the first pressure gauge 21 and the first pressure sensor 22 are both connected to the rod cavity of the master cylinder 5, and the second pressure gauge 27 and the second pressure sensor 28 are both connected to the rod cavity of the slave cylinder 26.
Optionally, referring to fig. 5, the temperature detection system includes a MAX31855 temperature measurement circuit and a K-type thermocouple connected to each other, and the K-type thermocouple is disposed on the female die base 2. Wherein the electromotive force of the K-type thermocouple satisfies E12(T,T0)＝F(T)-F(T0)，E12For total electromotive force, T is the hot-end temperature, T0Matching MAX31855 with cold end compensation and non-linear correction for cold end temperature, and combining T with T0And the T + and T-terminals are connected to MAX31855, the temperature of the thermocouple and the reference terminal is read by an SO pin, and AD conversion is carried out to obtain the current forming temperature.
Optionally, the displacement detection system is configured to detect a displacement of the movable cross beam 3, and may detect the displacement by providing a displacement sensor on the movable cross beam 3, or calculate the displacement according to a piston rod expansion amount of the master cylinder 5.
Optionally, the control system is implemented by using an industrial personal computer and a control circuit of the heating pipe 13, and the expansion of the piston rod of the main hydraulic cylinder 5 and the expansion of the piston rod of the auxiliary hydraulic cylinder 26 are controlled by controlling the conduction state of each valve in the hydraulic oil circuit system 4 through the industrial personal computer according to the pressure of the hydraulic oil circuit in the hydraulic oil circuit system 4 and the displacement of the movable cross beam 3. Referring to fig. 6, the temperature in the control circuit of the heating pipe 13 is used as a signal input, and is input to a photoelectric coupler (TLP721F) by an industrial personal computer, the output end of the heating pipe is composed of a diode and an inductor, when the system temperature is too high, the power supply of the heating pipe 13 is automatically cut off, the photoelectric coupler is used for preventing electromagnetic interference to isolate a channel, when the signal input is interrupted, the light emitting diode is conducted to conduct a photoelectric coupler, and the electromagnetic relay works, so that the heating pipe 13 is short-circuited.
Optionally, the control system uses the MFC application development of VS, the application interface is provided with a display frame for displaying relevant data including pressure, temperature, timing and the like in real time, and the application interface uses a button function to perform control, including selection of a working mode, mainly including mode setting, temperature sampling, heating and cooling, displaying and alarming; the mode setting comprises return difference setting, temperature setting and refrigerating/heating setting, wherein the return difference is the size of molding temperature fluctuation, when the return difference is too small, an alarm is frequent, when the return difference is too large, the quality of the friction plate is influenced, and the temperature setting is compared and controlled according to the sampled current molding temperature. Can carry out machine-shaping according to the actual demand, keep warm and get operation and temperature settings such as piece, can set up heating temperature, heat preservation temperature and return difference scope etc, temperature control passes through heating pipe 13, temperature detecting system and the realization of heating pipe 13 control circuit, can use the asbestos cardboard to keep warm during the heat preservation, can also set up the fan on equipment base 1, the fan is connected with control system, through control system control fan 1's operating power, realize reducing the demand of present forming temperature.
Optionally, a plurality of T-shaped grooves are formed in the groove plate 12, four optional T-shaped grooves are formed in the groove plate, a plurality of T-shaped bolts are arranged on the fixing plate 11, the groove plate 12 is used for positioning the fixing plate 11, the material conveying plate 10 and the friction plate female die 9, the T-shaped grooves and the T-shaped bolts are designed, when the T-shaped bolts are not screwed down, the fixing plate 11 is moved on the groove plate 12, and when the fixing plate 11 is moved to a proper position, if the fixing plate 11 is moved to align the friction plate male die 7 and the friction plate female die 9, the T-shaped bolts can be screwed down to fix the fixing plate 11 on the groove plate 12.
Optionally, guide post mounting holes are drilled in four corners of the groove plate 12, guide posts 8 are arranged in the guide post mounting holes, through holes matched with the guide posts 8 are drilled in four corners of the movable cross beam 3, the movable cross beam 3 is connected with the guide posts 8 through flange linear bearings, and the movable cross beam 3 is a movable part, so that the mass of the movable cross beam is reduced as much as possible in design, and similarly, the mass of the movable cross beam is reduced as much as possible for the fixed cross beam 6, and the rigidity and the strength are increased. Optionally, the movable cross beam 3 and the fixed cross beam 6 adopt a box structure and are assisted by reinforcing ribs, a large fillet is designed in a transition area to process concentrated stress, enough space is reserved in the middle of the movable cross beam 3 to be fixed with a flange of a piston rod of the hydraulic cylinder 5, a threaded hole is designed in the lower surface of the movable cross beam, and the threaded hole is used for realizing positioning and installation with the friction plate male die 7.
The guide post 8 comprises a thread part, a shoulder part and a guide part, wherein after the thread part is turned, a cutting groove is milled for mounting a round nut and a stop washer, the shoulder part is in transition fit with a through hole of the fixed cross beam 6 and through holes at four corners of the groove plate 12 and is used for limiting the fixed cross beam 6, and the roughness of the guide part is below 0.8 and is in clearance fit with the through hole of the movable cross beam 3.
Wherein, optionally, the guide post 8 satisfies
Namely that
At the same time satisfy
ε≤[ε′]Wherein s is a preset safety factor, F is a nominal pressure applied to the guide post 8, d is the diameter of the guide post 8, z is the number of the guide posts 8, and sigma isbTo the tensile strength of the material of the guide post 8,
e is the elastic modulus of the material of the guide post 8, A is the sectional area of the guide post 8, l is the length of the deformed part of the guide post 8, and epsilon' is the strain range of the material of the guide post 8.
Optionally, the main hydraulic cylinder 5 is vertically installed on the fixed beam 6, a piston rod of the main hydraulic cylinder 5 is connected with the movable beam 3 through a through hole formed in the middle of the fixed beam 6, and a cylinder body portion of the main hydraulic cylinder 5 is fixedly connected with the fixed beam 6 through a flange.
Optionally, the die base 2 is provided with a circular groove for placing the material conveying plate 10 and the friction plate die 9, and a pin hole is drilled in the circular groove and used for stopping the friction plate die 9. The forming groove arranged on the friction plate female die 9 has a gradient of 2-4 degrees, so that the friction plate is demoulded and taken out after being formed. The upper surface of the material conveying plate 10 is provided with a through hole which is slightly larger than the friction plate female die 9 so as to facilitate the transportation of the formed friction plate, and the lower surface of the material conveying plate 10 is drilled with a threaded hole and a unthreaded hole which are respectively used for flange connection with the auxiliary hydraulic cylinder 26 and installation of the heating pipe 13.
In one possible embodiment, referring to fig. 7, the specific working process of the forming device for friction plates of a consignment vehicle of the present invention is as follows:
firstly, the control system sets the pressure required by the friction plate forming and the temperature during forming, then sets the pressure maintaining time, the heat preservation time and the temperature after forming, and finally, the control system firstly performs self-checking after determining that the states of all components are correct, and formally starts the forming work after the heating pipe 13 is electrified to reach the preset temperature. When the friction plate is prepared, a piston rod of the main hydraulic cylinder 5 pushes the movable cross beam 3 to move downwards, after a male die 7 and a female die 9 of the friction plate are closed, the control system maintains pressure and keeps warm according to preset time, then the piston rod of the main hydraulic cylinder 5 is retracted, and the auxiliary hydraulic cylinder 26 pushes out the formed friction plate through the connected material conveying plate 10. If the temperature reduction treatment is needed, air cooling or natural temperature reduction can be selected. When a pickup is selected, the position of the master cylinder 5 is checked first, and the slave cylinder 26 is controlled to push out the formed friction plate after confirming that no error is found.
The specific process of the control system controlling the extension and retraction of the piston rod of the master hydraulic cylinder 5 and the piston rod of the auxiliary hydraulic cylinder 26 through the hydraulic oil circuit system 4 is as follows:
when the motor 16 is started, the quantitative work is started, the second three-position four-way reversing valve 29 is connected to the third position, the piston rod of the auxiliary hydraulic cylinder 26 extends out to ensure that the raw material is in a proper heating area, then the second position of the first three-position four-way reversing valve 20 is electrified, the piston of the main hydraulic cylinder 5 moves to the highest position, then the first three-position four-way reversing valve 20 is connected to the third position, the piston of the main hydraulic cylinder 5 moves downwards, when the piston moves to a certain height away from the surface of the female die base 2, the second two-position two-way reversing valve 23 is connected to the upper position, oil flows through the throttle valve 24, and an oil return path generates flow limitation, so that the work speed switching is realized, and according to the principle that the speed of a hydraulic system is determined by flow, the punch is switched to a work feeding mode. When the pressure of the oil way reaches a specified value, the opening pressure of the pressure relay 18 can be adjusted according to actual needs to change the pressure of the punch on the raw material in the pressure maintaining process, at the moment, the energy accumulator 19 stores enough energy, the pressure relay 18 is conducted when reaching the opening pressure, the first two-way reversing valve 14 is connected to the lower position, the oil flows back to the oil tank through the overflow valve 15, at the moment, the pressure required by pressing is provided by the energy accumulator 19, and therefore pressure maintaining is achieved. After the forming operation is completed, the first three-position four-way reversing valve 20 is switched into the second position, the piston rod of the main hydraulic cylinder 5 lifts the male die 7 of the friction plate through flange connection, and oil flows through the one-way valve 25, so that the rapid retreating is realized. The forming process and the stripping process are mutually independent, and the heat preservation time of the friction plate is freely set by an industrial personal computer. When the stripping operation is performed, the second three-position four-way reversing valve 29 is switched to the second position, the piston rod of the auxiliary hydraulic cylinder 26 is retracted, and the material conveying plate 10 leaves a space below the test piece for taking the test piece.
Then the second three-position four-way reversing valve 29 is switched in a third position, the main hydraulic cylinder 5 moves downwards, after the mode is switched into a working-in mode, whether the pressure of a rod cavity of the main hydraulic cylinder 5 is normal or not is detected through the first pressure sensor 22, and it can be designed that when the pressure of the rod cavity of the main hydraulic cylinder 5 is slightly larger than the pressure of extrusion forming during mold stripping, the first pressure sensor 22 sends a fault signal to an industrial personal computer so as to prevent a test piece from being damaged. Under normal conditions, since the material conveying plate 10 is not supported below the test piece, the pressure is generally low in consideration of the characteristic that the pressure of the hydraulic system is determined by load, and therefore if the first pressure sensor 22 detects high pressure, a fault occurs. After stripping, the second three-position four-way reversing valve 29 is switched into the third position to push out the formed friction plate. The second pressure gauge 27 and the second pressure sensor 28 are also designed to avoid faults, and when the second pressure sensor 28 detects a large pressure, the second three-position four-way reversing valve 29 is switched to the neutral position, and stops working to wait for a fault to be checked.
Referring to fig. 8, when the control system issues a command, the displacement of the movable cross beam 3 is also used as one of the conditions for determination, that is, if the pressure measurement result is a, when the pressure is smaller than the set value, a is 0, otherwise, a is 1, and the displacement measurement result is B, when the friction plate punch 7 does not contact the friction plate die 9, B is 0, otherwise, B is 1, and the control system makes the displacement be one of the conditions for determination, that is, when the pressure measurement result is a, B is 0, or B is 1, and makes the displacement be B
D＝A&And B, when C is equal to 1, stopping the machine for alarming, if C is equal to 0, continuing to judge by D, and if D is equal to 1, normally working, otherwise, detecting again.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A forming device for friction plates of a tow truck is characterized by comprising an equipment base (1), a hydraulic oil way system (4), a pressure detection system, a temperature detection system, a displacement detection system and a control system;
the device comprises an equipment base (1), wherein a groove plate (12) and an auxiliary hydraulic cylinder (26) are arranged on the equipment base (1), a guide post (8) and a movable fixing plate (11) are arranged on the groove plate (12), a movable cross beam (3) and a fixed cross beam (6) are sequentially sleeved on the guide post (8), a main hydraulic cylinder (5) is arranged on the fixed cross beam (6), a piston rod of the main hydraulic cylinder (5) penetrates through a through hole formed in the fixed cross beam (6) to be connected with the movable cross beam (3), and a friction plate male die (7) is arranged on one side, close to the fixing plate (11), of the movable cross beam (3); a female die base (2) is arranged on the fixing plate (11), a material conveying plate (10) is arranged on the female die base (2), a female die through hole is formed in the material conveying plate (10), and a friction plate female die (9) connected with the fixing plate (11) is arranged in the female die through hole; a piston rod of the auxiliary hydraulic cylinder (26) is connected with the material conveying plate (10), a plurality of heating pipes (13) are arranged in the material conveying plate (10) and the female die base (2), and the main hydraulic cylinder (5) and the auxiliary hydraulic cylinder (26) are connected with the hydraulic oil circuit system (4); the temperature detection system, the heating pipe (13), the hydraulic oil circuit system (4), the pressure detection system and the displacement detection system are all connected with the control system;
the temperature detection system is used for detecting the current forming temperature and sending the current forming temperature to the control system, the pressure detection system is used for detecting the pressure of a rod cavity of the main hydraulic cylinder (5) and the pressure of a rod cavity of the auxiliary hydraulic cylinder (26) and sending the pressure to the control system, the displacement detection system is used for detecting the displacement of the movable cross beam (3) and sending the displacement to the control system, the control system is used for controlling the heating power of the heating pipe (13) according to the current forming temperature and the preset forming temperature, the pressure of the rod cavity of the main hydraulic cylinder (5) and the pressure of the rod cavity of the auxiliary hydraulic cylinder (26) and the displacement of the movable cross beam (3), and the expansion of a piston rod of the main hydraulic cylinder (5) and the expansion of a piston rod of the auxiliary hydraulic cylinder (26) are controlled through the hydraulic oil circuit system (4).
2. The forming device for friction plates of a consignment vehicle as claimed in claim 1, wherein the hydraulic oil circuit system (4) comprises a first two-position two-way reversing valve (14), an overflow valve (15), a motor (16), a fixed displacement pump (17), a pressure relay (18), an energy accumulator (19), a first three-position four-way reversing valve (20), a second two-position two-way reversing valve (23), a throttle valve (24), a one-way valve (25) and a second three-position four-way reversing valve (29);
one end of a fixed displacement pump (17) is connected with a motor (16), the other end of the fixed displacement pump is connected with a first position of an overflow valve (15), an energy accumulator (19), a first position of a first three-position four-way reversing valve (20) and a first position of a second three-position four-way reversing valve (29) in a connecting mode, a first two-position two-way reversing valve (14) is connected with the overflow valve (15), a pressure relay (18) is connected with the energy accumulator (19), a second two-position two-way reversing valve (23), a throttle valve (24) and a one-way valve (25) are connected in parallel to form a current limiting unit, one end of the current limiting unit is connected with a rod cavity of a main hydraulic cylinder (5), the other end of the current limiting unit is connected with a second position of the first three-position four-way reversing valve (20), and the third position of the first three-position four-way reversing valve (20) is connected with a rodless cavity of the main hydraulic cylinder (5); the second position of the second three-position four-way reversing valve (29) is connected with a rod cavity of the auxiliary hydraulic cylinder (26), and the third position of the second three-position four-way reversing valve (29) is connected with a rodless cavity of the auxiliary hydraulic cylinder (26).
3. The forming device for the friction plate of the consignment car as claimed in claim 1, wherein the pressure detection system comprises a first pressure gauge (21), a first pressure sensor (22), a second pressure gauge (27) and a second pressure sensor (28), the first pressure gauge (21) and the first pressure sensor (22) are both connected with the rod cavity of the master cylinder (5), and the second pressure gauge (27) and the second pressure sensor (28) are both connected with the rod cavity of the slave cylinder (26).
4. A forming device for a friction plate of a consignment car as claimed in claim 1, characterized in that the movable cross beam (3) and the fixed cross beam (6) are of box structures.
5. A pallet car friction plate forming arrangement according to claim 1, characterised in that the guide posts (8) meet:
and epsilon is less than or equal to epsilon']；
Wherein s is a preset safety factor, F is nominal pressure borne by the guide post (8), d is the diameter of the guide post (8), z is the number of the guide posts (8), and sigma isbThe tensile strength of the material of the guide post (8),
e is the elastic modulus of the material of the guide post (8), A is the sectional area of the guide post (8), l is the length of the deformed part of the guide post (8), and epsilon' is the strain range of the material of the guide post (8).
6. The forming device for the friction plates of the consignment vehicle as claimed in claim 1, wherein the forming grooves on the concave die (9) for the friction plates are provided with a gradient of 2-4 degrees.
7. The forming device for the friction plate of the consignment car as claimed in claim 1, wherein a fan is further arranged on the equipment base (1), the fan is connected with a control system, and the control system is used for controlling the operation power of the fan according to the current forming temperature and the preset forming temperature.
8. A forming device for a friction plate of a consignment car according to claim 1, wherein a plurality of T-shaped grooves are formed in the groove plate (12), a plurality of T-shaped bolts are arranged on the fixing plate (11), and the plurality of T-shaped bolts penetrate through the fixing plate (11) to be connected with the plurality of T-shaped grooves.
9. A pallet car friction lining forming arrangement according to claim 1, characterised in that the travelling cross beam (3) is connected to the guide posts (8) using flanged linear bearings.
10. The forming device for the friction plate of the consignment vehicle as claimed in claim 1, wherein the male die (7) and the female die (9) are both made of CrWMn materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390388.5A CN114771000B (en) | 2022-04-14 | 2022-04-14 | Friction plate forming device of delivery truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390388.5A CN114771000B (en) | 2022-04-14 | 2022-04-14 | Friction plate forming device of delivery truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114771000A true CN114771000A (en) | 2022-07-22 |
| CN114771000B CN114771000B (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210390388.5A Active CN114771000B (en) | 2022-04-14 | 2022-04-14 | Friction plate forming device of delivery truck |
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| Country | Link |
|---|---|
| CN (1) | CN114771000B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393767A (en) * | 2016-02-19 | 2017-02-15 | 王继国 | Energy-saving hydraulic press |
| CN108749098A (en) * | 2018-06-28 | 2018-11-06 | 山东金麒麟股份有限公司 | Brake block hot press |
| CN111545627A (en) * | 2020-05-11 | 2020-08-18 | 山东荣邦汽配有限公司 | Brake block integrated into one piece device |
| CN111634056A (en) * | 2020-06-30 | 2020-09-08 | 湖北龙运汽车配件有限公司 | Automatic friction plate pressing machine |
| US20210316354A1 (en) * | 2020-04-10 | 2021-10-14 | Southwest Technology And Engineering Research Institute | Fine blanking method and device for forming friction plates with friction material layers |
-
2022
- 2022-04-14 CN CN202210390388.5A patent/CN114771000B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393767A (en) * | 2016-02-19 | 2017-02-15 | 王继国 | Energy-saving hydraulic press |
| CN108749098A (en) * | 2018-06-28 | 2018-11-06 | 山东金麒麟股份有限公司 | Brake block hot press |
| US20210316354A1 (en) * | 2020-04-10 | 2021-10-14 | Southwest Technology And Engineering Research Institute | Fine blanking method and device for forming friction plates with friction material layers |
| CN111545627A (en) * | 2020-05-11 | 2020-08-18 | 山东荣邦汽配有限公司 | Brake block integrated into one piece device |
| CN111634056A (en) * | 2020-06-30 | 2020-09-08 | 湖北龙运汽车配件有限公司 | Automatic friction plate pressing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114771000B (en) | 2023-06-02 |
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