CN114311793A - Hybrid power hydraulic press under equal power - Google Patents
Hybrid power hydraulic press under equal power Download PDFInfo
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- CN114311793A CN114311793A CN202210007552.XA CN202210007552A CN114311793A CN 114311793 A CN114311793 A CN 114311793A CN 202210007552 A CN202210007552 A CN 202210007552A CN 114311793 A CN114311793 A CN 114311793A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 78
- 230000001105 regulatory effect Effects 0.000 claims abstract description 71
- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 53
- 238000007789 sealing Methods 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 19
- 230000006698 induction Effects 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 11
- 230000004044 response Effects 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims 2
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- 230000009467 reduction Effects 0.000 description 10
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
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- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a hybrid power hydraulic press under equal power, which comprises a fixing device and a forming device, adjusting device and electric jar, fixing device and forming device transmission are connected, forming device and adjusting device connect, fixing device includes base and supporting seat, be equipped with a plurality of guide posts between base and supporting seat, the guide post both ends respectively with base and supporting seat fastening connection, be equipped with the energy storage room on the supporting seat, energy storage room one side is equipped with the feed liquor pipe, supporting seat downwardly extending is equipped with the telescopic link, telescopic link upside and supporting seat fastening connection, the feed liquor pipe passes through energy storage room and telescopic link intercommunication, forming device includes the pressure head, telescopic link lower extreme and pressure head transmission are connected, be equipped with the pressure regulating groove on the pressure head, the pressure regulating inslot is arranged in to the electric jar, the electric jar output is equipped with the pressure regulating board, pressure regulating board and pressure regulating groove sliding connection, pressure regulating groove one side compensation runner, pressure regulating groove one end and telescopic link intermittent type intercommunication are kept away from to the compensation runner.
Description
Technical Field
The invention relates to the technical field of hybrid power presses, in particular to a hybrid power hydraulic press with equal power lower pressure.
Background
With the continuous development of metal forming technology and the improvement of product precision, more and more enterprises begin to pay attention to processing efficiency and forming quality, wherein, in order to guarantee good hydraulic forming efficiency, the hydraulic forming precision is improved by setting fixed output power to a hydraulic machine.
When the workpiece is pressed, a certain pressure is applied to the workpiece through a hydraulic press, so that the workpiece is formed. However, along with the continuous complication of work pieces, the size requirement on the work pieces is higher and higher, the existing hydraulic machine generally presses the work pieces at full power, the working stroke consumes full power every time, the total efficiency is low, the energy consumption is higher, when diversified product processing is carried out, the forming die is not only required to be replaced, but also various parameters are required to be reset, and the production efficiency of enterprises is greatly influenced.
In addition, when the uniform-power pressing with a single power source is carried out, once the size of a workpiece is large, the pressing power cannot meet the workpiece forming requirement, the workpiece is easily formed incompletely, the precision is low, and when the workpiece is processed with excessive power, the die is easily collided, so that the service life of the device is influenced, and the forming precision is influenced.
Disclosure of Invention
The invention aims to provide a hybrid power hydraulic press with equal power, which solves the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
a mixed power hydraulic press with equal power and lower pressure comprises a fixing device and a forming device, adjusting device and electric jar, fixing device and forming device transmission are connected, forming device and adjusting device connect, fixing device includes base and supporting seat, be equipped with a plurality of guide posts between base and supporting seat, the guide post both ends respectively with base and supporting seat fastening connection, be equipped with the energy storage room on the supporting seat, energy storage room one side is equipped with the feed liquor pipe, supporting seat downwardly extending is equipped with the telescopic link, telescopic link upside and supporting seat fastening connection, the feed liquor pipe passes through energy storage room and telescopic link intercommunication, forming device includes the pressure head, telescopic link lower extreme and pressure head transmission are connected, be equipped with the pressure regulating groove on the pressure head, the pressure regulating inslot is arranged in to the electric jar, the electric jar output is equipped with the pressure regulating board, pressure regulating board and pressure regulating groove sliding connection, pressure regulating groove one side compensation runner, pressure regulating groove one end and telescopic link intermittent type intercommunication are kept away from to the compensation runner.
The fixing device is a main installation foundation, hydraulic forming is carried out through the forming device, high-pressure hydraulic oil is input into the energy storage chamber through the liquid inlet pipe at a constant speed, so that the initial power of the hydraulic machine is kept stable, thereby ensuring the moving speed, along with the increase of the pressure, the expansion rod is expanded, thereby outputting the displacement, driving the pressure head to move downwards, adjusting the downward pressure according to different workpieces through the adjusting device, thereby regulating the speed, improving the molding quality, performing pressure compensation when the thick plate is molded by driving input power through the electric cylinder, preventing the molding quality from being influenced by too low pressure, the guide post is fixed through the base, the supporting seat is installed through the guide post, the electric cylinder is fixed through the pressure regulating groove, the electric cylinder outputs displacement to drive the pressure regulating plate to move, therefore, the hydraulic oil in the adjusting groove is conveyed into the telescopic rod through the compensation flow channel to perform pressure compensation, and the forming quality is improved.
Further, fixing device still includes the objective table, be equipped with a plurality of spouts on the base, objective table and spout sliding connection, forming device still includes the die head, response seat and sealing ring, be equipped with the biasing groove on the pressure head, die head and biasing groove swing joint, the objective table is equipped with the shaping chamber, be equipped with the control chamber on the base, shaping chamber and control chamber intercommunication, the shaping intracavity is arranged in to the response seat, response seat downwardly extending is equipped with branch, be equipped with the through-hole in the middle of the sealing ring, the branch lower extreme passes the through-hole, the sealing ring upside is equipped with reset spring, reset spring is located the branch outer lane, sealing ring and reset spring transmission are connected, the control chamber is located and is filled with hydraulic oil in the sealing ring downside cavity, branch and sealing ring through-hole sealing connection.
The forming cavity is provided by the objective table, when the pressure head moves downwards, the die head is driven to move downwards, the objective table is in sliding connection with the sliding groove, workpieces with various sizes can be conveniently processed, the forming practicability is improved, the pressure head is used for installing the die head through the offset groove, the offset groove is provided with a moving gap along the vertical direction, when the die head moves downwards to contact with the workpiece to be processed, a reverse acting force is applied, the die head moves upwards firstly, the moving distance is the moving gap of the offset groove, buffering is carried out, the damage to the forming cavity is reduced, stress concentration is prevented, when the workpiece is supported, the workpiece is placed on the induction seat, the lower end of the induction seat is provided with a support rod, the support rod is in sealing connection with the sealing ring, the lower end of the adjusting chamber is filled with high-pressure hydraulic oil, the lower end of the support rod is inserted into the hydraulic oil, the upper end of the sealing ring is provided with a reset spring, when the workpiece is placed on the induction seat, the induction seat drives the support rod to move downwards, so that the hydraulic oil between the sealing ring and the adjusting chamber is extruded, the sealing ring is enabled to move upwards, the workpiece is supported in an isobaric mode through the elastic force of the return spring, when the small-size workpiece is manufactured, the quality is reduced along with the reduction of the thickness of the workpiece, the sealing ring moves downwards under the action of the pretightening force of the return spring, the pressure of hydraulic oil is increased, and therefore thrust is applied to the supporting rod, the supporting rod moves upwards, and the thickness of the workpiece is automatically compensated; when a large-size workpiece is manufactured, the weight is increased along with the increase of the thickness of the workpiece, so that the supporting rod further moves downwards, hydraulic oil is compressed, the sealing ring moves upwards, the return spring further compresses, the height is automatically adjusted according to the weight of the workpiece, the workpiece is pressed downwards to perform bidirectional buffering, and the service life of the model is prolonged.
Furthermore, a centrifugal groove is formed in the pressure head, the adjusting device comprises a transmission assembly, the transmission assembly is arranged in the centrifugal groove, the transmission assembly comprises a transmission wheel and an eccentric block, the centrifugal groove is communicated with the offset groove, the transmission wheel is movably connected with the centrifugal groove, one side, close to the offset groove, of the transmission wheel is in transmission connection with the die head, spring grooves are formed in two sides of the centrifugal groove, pre-tightening springs are arranged in the spring grooves, one side of each pre-tightening spring is in fastening connection with the spring grooves, one side, far away from the spring grooves, of each pre-tightening spring is in transmission connection with the transmission wheel, the spring grooves are obliquely arranged, and one side, close to the offset groove, of each spring groove is located at a high position.
The transmission wheel is guided by the rotation of the centrifugal groove, one side of the transmission wheel faces the side of the die head, when the die head is pressed downwards, the die head is gradually contacted with the workpiece, the side of the workpiece is in friction contact with the wall surface of the forming cavity, the die head generates upward reverse acting force to move the die head upwards, the die head slides along the offset groove to drive the transmission wheel to rotate, the transmission wheel is provided with an eccentric block to do centrifugal motion in the centrifugal groove, the transmission wheel slides along the centrifugal groove under the centrifugal action of the eccentric block, the transmission wheel is obliquely and downwards arranged through the spring groove to improve the moving distance of the transmission wheel under the centrifugal action, so that the detection precision is improved, the thickness is increased along with the increase of the mass of the workpiece, the friction force of the side and the forming cavity is increased, the resistance borne by the die head is increased, the upward moving speed of the die head is reduced along with the increase of the resistance borne by the die head, the rotating speed of the transmission wheel is reduced, and the centrifugal force borne by the eccentric block is reduced, thereby reducing the compression amount of the pre-tightening spring; when the thickness of the workpiece is small, the resistance borne by the die head is reduced, so that the instantaneous rotating speed of the driving wheel is increased, the centrifugal force borne by the eccentric block is increased, the compression amount of the pre-tightening spring is increased, the workpieces with different thicknesses are detected, and the pressure adjustment is facilitated.
The adjusting device comprises a pressure head, a spring groove, a reversing plate, a load-increasing flow channel, a flow guide channel, a compensation flow channel, a pressure regulating plate and a pressure-increasing flow channel, wherein the pressure head is provided with the reversing groove;
when increasing the load: the inlet of the diversion channel is communicated with the load-increasing channel, and the outlet of the diversion channel is communicated with the compensation channel.
The transmission wheel slides under the centrifugal action of the eccentric block, the pre-tightening spring is compressed, the shaft end of the transmission wheel is in transmission with the transmission rod, an eccentric axis is arranged on the transmission rod, the transmission rod rotates along the axis along with the sliding of the transmission wheel, rated power is output to the telescopic rod through the liquid inlet pipe, the sliding distance of the transmission wheel is short when thick workpiece hydraulic forming is carried out, the reversing plate rotates through transmission of the transmission rod, so that the charge flow channel is communicated with the compensation flow channel through the flow guide channel, hydraulic oil in the pressure regulating groove is pressurized through the pressurization of the electric cylinder, the hydraulic oil pressure in the pressure regulating groove is larger than that in the telescopic rod, when the charge flow channel is communicated with the compensation flow channel, high-pressure hydraulic oil enters the telescopic rod from the compensation flow channel, pressure compensation is carried out on hydraulic forming of a large workpiece, and forming accuracy is improved.
Furthermore, an unloading flow channel is arranged on the pressure head, one end of the unloading flow channel is communicated with the pressure regulating groove, and the communication position of the unloading flow channel and the pressure regulating groove is positioned on one side of the pressure regulating plate, which is far away from the loading flow channel;
when unloading: the unloading flow passage is communicated with the inlet of the flow guide passage, and the compensation flow passage is communicated with the outlet of the flow guide passage.
When a small-thickness workpiece is formed, the driving wheel slides and displaces greatly under the action of the centrifugal force of the eccentric block, the reversing plate rotates by a large angle through transmission of the driving rod, so that the inlet of the diversion channel crosses the outlet of the loading channel, the unloading channel is communicated with the compensation channel through the diversion channel, the pressure regulating plate is pushed by the electric cylinder to pressurize the hydraulic oil, one side of the pressure regulating plate, which deviates from the hydraulic oil, and the pressure regulating groove are enlarged along with the space to be in a negative pressure state, so that negative pressure suction is generated in the unloading channel, the pressure difference gradient is improved through the negative pressure suction and the positive pressure of the hydraulic oil, the hydraulic oil quickly flows out of the telescopic rod and enters a negative pressure area of the pressure regulating groove, so that the pressure is relieved, the die head is subjected to instantaneous speed reduction, the die collision is prevented, and the service life and the forming precision are improved.
Further, adjusting device still includes pressure reducing plate and friction plate, pressure reducing plate is the cam structure, be equipped with on the pressure head and break away from the runner, break away from runner both ends respectively with off-load runner and switching-over groove intercommunication, it is equipped with the groove of opening and close to break away from the runner middle section, pressure reducing plate rotates with opening and close the groove and is connected, be equipped with the pressure release hole on the pressure reducing plate, break away from the runner and open and close groove intercommunication department and be located the groove upper strata of opening and close, open and close groove and offset groove intercommunication, die head and friction plate transmission are connected, friction plate and pressure reducing plate transmission are connected, be equipped with the decompression mouth on the switching-over plate, decompression mouth and water conservancy diversion intercommunication, decompression mouth import and break away from runner intermittent type intercommunication.
When the workpiece is formed, the driving wheel is reset under the action of a pre-tightening spring, the die head moves downwards under the action of self gravity along with the upward movement of the pressure head to drive the friction plate to move downwards, the friction plate and the pressure reducing plate are in friction transmission to enable the pressure reducing plate to rotate, the pressure reducing plate is of a cam structure, the pressure reducing hole is positioned on the other side of the rotation center of the pressure reducing plate, the rotation center is close to the friction plate, the pressure reducing hole moves upwards through friction transmission along with the increase of the distance between the pressure head and the die head, when the die head moves downwards to the lowest end of the offset groove, the pressure reducing hole moves to the highest end to enable the separation runners on the two sides to be communicated, one end of the separation runner is communicated with the compensation runner through the pressure reducing port, the other end of the separation runner is communicated with the unloading runner, high-pressure hydraulic oil in the telescopic rod enters into a negative pressure chamber of the pressure regulating groove under the action of negative pressure, so that the telescopic rod is contracted to enable the die head to be rapidly released, the molding efficiency is improved.
Preferably, the objective table is provided with a wedge groove, the induction seat is arranged in a wedge shape, the induction seat and the wedge groove are arranged, the wedge groove is located between the adjusting chamber and the forming cavity, and the adjusting chamber is communicated with the forming cavity through the wedge groove. The response seat is the wedge setting, moves down the response seat through the wedge groove and carries on spacingly, and the wedge groove of arranging through the slope assists the buffering, prevents to cause stress concentration, improves the whole life of device.
As optimization, the equal-power lower pressure hydraulic machine also comprises a liquid discharge pipe, and the liquid discharge pipe is communicated with the pressure regulating groove. After one stroke is finished, the electric cylinder moves backwards, so that the hydraulic oil collected by the negative pressure area is collected again, is output through the liquid discharge pipe and is sent to the pressurizing position at the front end of the liquid inlet pipe for cyclic utilization.
Compared with the prior art, the invention has the following beneficial effects: when a small-size workpiece is manufactured, the quality is reduced along with the reduction of the thickness of the workpiece, the sealing ring moves downwards under the action of the pretightening force of the return spring, the pressure of hydraulic oil is increased, so that the thrust is applied to the supporting rod, the supporting rod moves upwards, the thickness of the workpiece is automatically compensated, the height is automatically adjusted according to the weight of the workpiece, the workpiece is pressed downwards to be buffered in a two-way mode, and the service life of a model is prolonged; when the thickness of the workpiece is smaller, the resistance borne by the die head is reduced, so that the instantaneous rotating speed of the driving wheel is increased, the centrifugal force borne by the eccentric block is increased, the compression amount of the pre-tightening spring is increased, the workpieces with different thicknesses are detected, and the pressure adjustment is facilitated; when the thick workpiece is subjected to hydraulic forming, the centrifugal force is smaller, the sliding distance of the driving wheel is shorter, so that the load-increasing flow channel is communicated with the compensation flow channel through the flow guide channel, the hydraulic oil pressure in the pressure regulating groove is greater than that in the telescopic rod, and high-pressure hydraulic oil enters the telescopic rod from the compensation flow channel, so that the pressure compensation is performed on the large workpiece hydraulic forming, and the forming precision is improved; when a small-thickness workpiece is formed, the driving wheel slides downwards under the action of the centrifugal force of the eccentric block to move greatly, the unloading runner is communicated with the compensation runner through the flow guide channel, the pressure regulating plate is pushed by the electric cylinder to pressurize hydraulic oil, one side of the pressure regulating plate, which deviates from the hydraulic oil, and the pressure regulating groove, which increases along with the space, are in a negative pressure state, so that negative pressure suction is generated in the unloading runner, the pressure difference gradient is improved through the negative pressure suction and the positive pressure of the hydraulic oil, the hydraulic oil quickly flows out of the telescopic rod and enters a negative pressure area of the pressure regulating groove, so that the pressure is released, the die head is subjected to instantaneous speed reduction, the die collision is prevented, the service life is prolonged, and the forming precision is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a schematic view of the power transmission configuration of the present invention;
FIG. 3 is a schematic view of a sheet hydroforming configuration of the present invention;
FIG. 4 is a schematic view of the hydroforming configuration of the plank of the present invention;
FIG. 5 is a schematic view of the pressure compensation configuration of the present invention;
FIG. 6 is an enlarged view of portion A of the view of FIG. 5;
FIG. 7 is a schematic view of a boost compensation configuration of the present invention;
FIG. 8 is a schematic view of the pressure relief compensation configuration of the present invention;
in the figure: 1-fixing device, 11-base, 111-adjusting chamber, 12-object stage, 121-forming cavity, 122-wedge groove, 13-supporting seat, 14-guide column, 15-telescopic rod, 2-forming device, 21-pressure head, 210-opening and closing groove, 211-pressure adjusting groove, 212-offset groove, 213-unloading runner, 214-loading runner, 215-reversing groove, 216-compensation runner, 217-centrifugal groove, 218-disengaging runner, 219-opening and closing groove, 22-die head, 23-induction seat, 24-supporting rod, 25-reset spring, 26-sealing ring, 3-adjusting device, 31-transmission component, 311-transmission wheel, 312-eccentric block, 313-pre-tightening spring, 314-transmission rod, 32-reversing plate, 321-flow guide, 322-pressure reducing port, 33-pressure reducing plate, 331-pressure reducing hole, 34-friction plate, 4-electric cylinder, 5-pressure regulating plate and 6-liquid discharge pipe.
Detailed Description
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.
The invention provides the technical scheme that:
as shown in fig. 1 to 8, a hybrid constant-power hydraulic press, which comprises a fixing device 1, a forming device 2, an adjusting device 3 and an electric cylinder 4, wherein the fixing device 1 is in transmission connection with the forming device 2, the forming device 2 is connected with the adjusting device 3, the fixing device 1 comprises a base 11 and a support base 13, a plurality of guide columns 14 are arranged between the base 11 and the support base 13, two ends of each guide column 14 are respectively and tightly connected with the base 11 and the support base 13, an energy storage chamber is arranged on the support base 13, a liquid inlet pipe is arranged on one side of the energy storage chamber, a telescopic rod 15 extends downwards from the support base 13, the upper side of the telescopic rod 15 is tightly connected with the support base 13, the liquid inlet pipe is communicated with the telescopic rod 15 through the energy storage chamber, the forming device 2 comprises a pressure head 21, the lower end of the telescopic rod 15 is in transmission connection with the pressure head 21, a pressure regulating groove 211 is arranged on the pressure regulating groove 211, the electric cylinder 4 is arranged in the pressure regulating groove 211, a pressure regulating plate 5 is arranged at the output end of the electric cylinder, the pressure regulating plate 5 is connected with the pressure regulating groove 211 in a sliding mode, the pressure regulating groove 211 is provided with a compensation flow channel 216 on one side, and one end, far away from the pressure regulating groove 211, of the compensation flow channel 216 is intermittently communicated with the telescopic rod 15.
The fixing device 1 is a main installation foundation, hydraulic forming is carried out through the forming device 2, high-pressure hydraulic oil is input into the energy storage chamber at a constant speed through the liquid inlet pipe, the initial power of the hydraulic machine is kept stable, the moving speed is guaranteed, the telescopic rod 15 is expanded along with the increase of the pressure, displacement is output, the pressure head 21 is driven to move downwards, the downward pressure is adjusted according to different workpieces through the adjusting device 3, speed is adjusted, the forming quality is improved, the electric cylinder 4 is used for driving input power, when thick plate forming is carried out, pressure compensation is carried out, the phenomenon that the forming quality is influenced due to too low pressure is prevented, the guide post 14 is fixed through the base 11, the supporting seat 13 is installed through the guide post 14, the electric cylinder 4 is fixed through the pressure adjusting groove 211, the electric cylinder 4 outputs displacement to drive the pressure adjusting plate 5 to move, and the hydraulic oil in the adjusting groove 211 is sent into the telescopic rod 15 through the compensating flow passage 216, and pressure compensation is carried out, and the forming quality is improved.
As shown in fig. 1 to 4, the fixing device 1 further includes an object stage 12, a plurality of sliding grooves are provided on the base 11, the object stage 12 is slidably connected with the sliding grooves, the forming device 2 further includes a die head 22, a sensing seat 23 and a sealing ring 26, a bias groove 212 is provided on the pressure head 21, the die head 22 is movably connected with the bias groove 212, the object stage 12 is provided with a forming cavity 121, the base 11 is provided with an adjusting chamber 111, the forming cavity 121 is communicated with the adjusting chamber 111, the sensing seat 23 is disposed in the forming cavity 121, a supporting rod 24 is provided in the sensing seat 23 in a downward extending manner, a through hole is provided in the middle of the sealing ring 26, the lower end of the supporting rod 24 passes through the through hole, the upper side of the sealing ring 26 is provided with a return spring 25, the return spring 25 is located on the outer ring of the supporting rod 24, the sealing ring 26 is in transmission connection with the return spring 25, the adjusting chamber 111 is located on the lower side of the sealing ring 26 and is filled with hydraulic oil, and the supporting rod 24 is in through hole sealing connection with the sealing ring 26.
The forming cavity 121 is provided by the objective table 12, when the pressing head 21 moves downwards, the die head 22 is driven to move downwards, the objective table 12 is in sliding connection with the sliding groove, workpieces with various sizes can be conveniently processed, the forming practicability is improved, the pressing head 21 is used for installing the die head 22 through the offset groove 212, the offset groove 212 is provided with a moving gap along the vertical direction, when the die head 22 moves downwards to contact with the workpiece to be processed, a reverse acting force is applied, the die head 22 moves upwards firstly, the upward moving distance is the moving gap of the offset groove, so that the die head is buffered, the damage to the forming cavity 121 is reduced, the stress concentration is prevented, when the workpiece is supported, the workpiece is placed on the induction seat 23, the lower end of the induction seat 23 is provided with the supporting rod 24, the supporting rod is in sealing connection with the sealing ring 26, the lower end of the adjusting chamber 111 is filled with high-pressure hydraulic oil, the lower end of the supporting rod is inserted into the hydraulic oil, the upper end of the sealing ring 26 is provided with the return spring 25, when the workpiece is placed on the induction seat 23, the induction seat 23 drives the support rod 24 to move downwards, so that hydraulic oil between the sealing ring 26 and the adjusting chamber 111 is extruded, the sealing ring 26 outputs displacement upwards, the workpiece is supported at equal pressure through the elasticity of the return spring 25, when the small-size workpiece is manufactured, the quality is reduced along with the reduction of the thickness of the workpiece, the sealing ring 26 moves downwards under the action of the pretightening force of the return spring, the pressure of the hydraulic oil is increased, and the thrust is applied to the support rod 24, so that the support rod 24 moves upwards, and the thickness of the workpiece is automatically compensated; when a large-size workpiece is manufactured, the weight is increased along with the increase of the thickness of the workpiece, so that the supporting rod 24 further moves downwards, hydraulic oil is compressed, the sealing ring moves upwards, the return spring 25 is further compressed, the height is automatically adjusted according to the weight of the workpiece, the workpiece is pressed downwards to perform bidirectional buffering, and the service life of the model is prolonged.
As shown in fig. 2, 5 and 6, a centrifugal groove 217 is arranged on the pressure head 21, the adjusting device 3 comprises a transmission assembly 31, the transmission assembly 31 is arranged in the centrifugal groove 217, the transmission assembly 31 comprises a transmission wheel 311 and an eccentric block 312, the centrifugal groove 217 is communicated with the offset groove 212, the transmission wheel 311 is movably connected with the centrifugal groove 217, one side of the transmission wheel 311 close to the offset groove 212 is in transmission connection with the die head 22, spring grooves 210 are arranged on two sides of the centrifugal groove 217, a pre-tightening spring 313 is arranged in the spring groove, one side of the pre-tightening spring 313 is fixedly connected with the spring groove 210, one side of the pre-tightening spring 313 far away from the spring groove 210 is in transmission connection with the transmission wheel 311, the spring groove 210 is obliquely arranged, and one side of the spring groove 210 close to the offset groove 212 is located at a high position.
The driving wheel 311 is guided by the centrifugal groove 217 in a rotating way, one side of the driving wheel 311 faces the side of the die head 22, when the die head 22 is pressed downwards, the die head 22 is gradually contacted with a workpiece, the side of the workpiece is in friction contact with the wall surface of the forming cavity 121, the die head 22 generates an upward reverse acting force to enable the die head 22 to move upwards, the die head 22 slides along the offset groove 212 to drive the driving wheel 311 to rotate, the driving wheel 311 is provided with an eccentric block 312, the driving wheel 311 does centrifugal motion in the centrifugal groove 217, the driving wheel 311 slides along the centrifugal groove 217 under the centrifugal action of the eccentric block 312, the spring groove 210 is obliquely and downwards arranged to improve the moving distance of the driving wheel 311 under the centrifugal action, so that the detection precision is improved, the friction force between the side and the forming cavity 121 is increased along with the increase of the mass of the workpiece, the thickness is increased, the resistance borne by the die head is increased when rated power is output, the upward moving speed of the die head is reduced, the rotating speed of the transmission wheel is reduced, so that the centrifugal force borne by the eccentric block 312 is reduced, and the compression amount of the pre-tightening spring 313 is reduced; when the thickness of the workpiece is smaller, the resistance force borne by the die head is reduced, so that the instantaneous rotating speed of the driving wheel 311 is increased, the centrifugal force borne by the eccentric block 312 is increased, the compression amount of the pre-tightening spring 313 is increased, the workpieces with different thicknesses are detected, and the pressure adjustment is facilitated.
As shown in fig. 2, 5 and 7, the transmission assembly 31 further includes a transmission rod 314, the pressure head 21 is provided with a reversing groove 215, the reversing groove 215 is communicated with the spring groove 210, two ends of the transmission rod 314 are respectively disposed in the reversing groove 215 and the spring groove 210, the adjusting device 3 further includes a reversing plate 32, the upper end of the transmission rod 314 is in transmission connection with the reversing plate 32, the pressure head 21 is provided with a loading flow channel 214, the loading flow channel 214 is intermittently communicated with the reversing groove 215, the reversing plate 32 is provided with a flow guide channel 321, one side of the flow guide channel 321, which is close to the compensation flow channel 216, an outlet is provided between the pressure regulating plate 5 and the loading flow channel 214, and a pressurizing area is filled with hydraulic oil;
when increasing the load: the inlet of flow guide channel 321 is communicated with the load-increasing flow channel 214, and the outlet of flow guide channel 321 is communicated with the compensation flow channel 216.
The driving wheel 311 slides under the centrifugal action of the eccentric block 312 to press the pre-tightening spring 313, the shaft end of the driving wheel 311 is driven by the driving rod 314, the driving rod 314 is provided with an eccentric axis, the driving rod 314 rotates along the axis along with the sliding of the driving wheel 311, the rated power is output to the telescopic rod 15 through the liquid inlet pipe, when the thick workpiece is hydroformed, the sliding distance of the driving wheel 311 is short, the driving rod 314 drives the reversing plate 32 to rotate, thereby, the charge flow path 214 is communicated with the compensation flow path 216 through the guide flow path 321, pressurized by the electric cylinder 4, the hydraulic oil in the pressure regulating groove 211 is pressurized, so that the hydraulic oil pressure in the pressure regulating groove 211 is larger than the hydraulic oil pressure in the telescopic rod 15, when the load-increasing flow passage 214 is communicated with the compensation flow passage 216, the high-pressure hydraulic oil enters the telescopic rod 15 from the compensation flow passage 216, so that the pressure compensation is performed on the hydraulic forming of the large workpiece, and the forming precision is improved.
As shown in fig. 2, 5 and 8, an unloading channel 213 is arranged on the pressure head 21, one end of the unloading channel 213 is communicated with the pressure regulating groove 211, and the communication position of the unloading channel 213 and the pressure regulating groove 211 is located on the side of the pressure regulating plate 5 far away from the loading channel 214;
when unloading: the unloading runner 213 is communicated with the inlet of the guide runner 321, and the compensation runner 216 is communicated with the outlet of the guide runner 321.
When a small-thickness workpiece is formed, the driving wheel 311 slides and displaces greatly under the action of the centrifugal force of the eccentric block 312, the reversing plate 32 rotates by a large angle through the transmission of the transmission rod 314, so that the inlet of the guide channel 321 crosses the outlet of the loading channel 214, the unloading channel 213 is communicated with the compensation channel through the guide channel 312, and when the pressure regulating plate 5 is pushed by the electric cylinder 4 to pressurize hydraulic oil, one side of the pressure regulating plate 5, which is far away from the hydraulic oil, and the pressure regulating groove 211 increase along with the space and are in a negative pressure state, so that negative pressure suction is generated in the unloading channel 213, and the pressure difference gradient is improved through the negative pressure suction and the positive pressure of the hydraulic oil, so that the hydraulic oil rapidly flows out of the telescopic rod 15 and enters a negative pressure area of the pressure regulating groove 211, so that pressure relief is performed, the die head 22 is subjected to instantaneous speed reduction, the die collision is prevented, and the service life and the forming precision are improved.
As shown in fig. 2, 5 and 6, the adjusting device 3 further includes a pressure reducing plate 33 and a friction plate 34, the pressure reducing plate 33 is of a cam structure, the pressure head 2 is provided with a disengaging runner 218, two ends of the disengaging runner 218 are respectively communicated with the unloading runner 213 and the reversing slot 215, the middle section of the disengaging runner 218 is provided with an opening and closing slot 219, the pressure reducing plate 33 is rotatably connected with the opening and closing slot 219, the pressure reducing plate 33 is provided with a pressure relief hole 331, the communicating position of the disengaging runner 218 and the opening and closing slot 219 is located on the upper layer of the opening and closing slot 219, the opening and closing slot 219 is communicated with the offset slot 212, the die head 22 is in transmission connection with the friction plate 34, the friction plate 34 is in transmission connection with the pressure reducing plate 33, the reversing plate 32 is provided with a pressure reducing port 322, the pressure reducing port 322 is communicated with the flow guide 321, and an inlet of the pressure reducing port 322 is intermittently communicated with the disengaging runner 218.
When the workpiece is formed, the driving wheel 311 is reset under the action of a pre-tightening spring 313, the die head 22 moves downwards under the action of the gravity of the die head 21 along with the upward movement of the pressure head 21, the friction plate 34 and the pressure reducing plate 33 perform friction transmission to enable the pressure reducing plate 33 to rotate, the pressure reducing plate 33 is of a cam structure, the pressure reducing hole 331 is positioned on the other side of the rotation center of the pressure reducing plate 33, the rotation center is close to the friction plate 34, the pressure reducing hole 331 moves upwards through the friction transmission along with the increase of the distance between the pressure head 21 and the die head 22, when the die head 22 moves downwards to the lowest end of the offset groove 212, the pressure reducing hole 331 moves to the highest end to enable the separation flow channels 218 on the two sides to be communicated, one end of the separation flow channel 218 is communicated with the compensation flow channel 216 through the pressure reducing port 322, the other end of the separation flow channel 213 is communicated with the unloading flow channel, under the action of negative pressure, high-pressure hydraulic oil in the telescopic rod 15 enters a negative pressure chamber of the pressure adjusting groove 211 to perform quick pressure reduction along with the reduction of the hydraulic oil, the telescopic rod 15 is contracted to enable the die head 22 to be rapidly demoulded, and the forming efficiency is improved.
Preferably, the object stage 12 is provided with a wedge groove 122, the induction seat 23 is arranged in a wedge shape, the induction seat 23 is matched with the wedge groove 122, the wedge groove 122 is positioned between the adjusting chamber 111 and the molding cavity 121, and the adjusting chamber 111 is communicated with the molding cavity 121 through the wedge groove 122. The response seat 23 sets up for the wedge, moves down the response seat 23 through wedge groove 122 and carries on spacingly, and the wedge groove of arranging through the slope assists the buffering, prevents to cause stress concentration, improves the whole life of device.
As optimization, the equal-power lower pressure hydraulic machine further comprises a liquid discharge pipe 6, and the liquid discharge pipe 6 is communicated with the pressure regulating groove 211. After one stroke is finished, the electric cylinder 4 moves backwards, so that the hydraulic oil collected in the negative pressure area is collected again, is output through the liquid discharge pipe 6 and is sent to the pressurizing position at the front end of the liquid inlet pipe for cyclic utilization.
The working principle of the invention is as follows: when a small-size workpiece is manufactured, along with the reduction of the thickness and the reduction of the quality of the workpiece, the sealing ring 26 moves downwards under the action of the pretightening force of the return spring, so that the pressure of hydraulic oil is increased, the thrust is applied to the supporting rod 24, the supporting rod 24 moves upwards, the thickness of the workpiece is automatically compensated, the height is automatically adjusted according to the weight of the workpiece, the workpiece is pressed downwards to be buffered in a two-way mode, and the service life of a model is prolonged; when the thickness of the workpiece is smaller, the resistance force borne by the die head is reduced, so that the instantaneous rotating speed of the driving wheel 311 is increased, the centrifugal force borne by the eccentric block 312 is increased, the compression amount of the pre-tightening spring 313 is increased, the workpieces with different thicknesses are detected, and the pressure adjustment is facilitated; when the thick workpiece is subjected to hydraulic forming, the centrifugal force is small, the sliding distance of the driving wheel 311 is short, so that the loading flow channel 214 is communicated with the compensation flow channel 216 through the flow guide channel 321, the hydraulic oil pressure in the pressure regulating groove 211 is larger than that in the telescopic rod 15, and high-pressure hydraulic oil enters the telescopic rod 15 from the compensation flow channel 216, so that the pressure compensation is performed on the large workpiece in the hydraulic forming process, and the forming precision is improved; when a small-thickness workpiece is formed, the driving wheel 311 slides downwards under the action of the centrifugal force of the eccentric block 312, the unloading runner 213 is communicated with the compensation runner through the guide runner 312, the pressure regulating plate 5 is pushed by the electric cylinder 4 to pressurize hydraulic oil, one side of the pressure regulating plate 5, which deviates from the hydraulic oil, and the pressure regulating groove 211 increases along with the space and is in a negative pressure state, so that negative pressure suction is generated in the unloading runner 213, the pressure difference gradient is improved through the negative pressure suction and the positive pressure of the hydraulic oil, the hydraulic oil quickly flows out of the telescopic rod 15 and enters a negative pressure area of the pressure regulating groove 211, the pressure is relieved, the die head 22 is instantaneously decelerated, the die collision is prevented, the service life is prolonged, and the forming precision is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A kind of mixed power presses the hydraulic press under the isopower, characterized by that: the hydraulic press under the equal power comprises a fixing device (1), a forming device (2), an adjusting device (3) and an electric cylinder (4), wherein the fixing device (1) is in transmission connection with the forming device (2), the forming device (2) is connected with the adjusting device (3), the fixing device (1) comprises a base (11) and a supporting seat (13), a plurality of guide columns (14) are arranged between the base (11) and the supporting seat (13), two ends of each guide column (14) are respectively in fastening connection with the base (11) and the supporting seat (13), an energy storage chamber is arranged on the supporting seat (13), a liquid inlet pipe is arranged on one side of the energy storage chamber, an expansion rod (15) is arranged in a manner of downwards extending the supporting seat (13), the upper side of the expansion rod (15) is in fastening connection with the supporting seat (13), and the liquid inlet pipe is communicated with the expansion rod (15) through the energy storage chamber, forming device (2) are including pressure head (21), telescopic link (15) lower extreme and pressure head (21) transmission are connected, be equipped with pressure regulating groove (211) on pressure head (21), in pressure regulating groove (211) was arranged in to electric jar (4), the electric jar output was equipped with pressure regulating plate (5), pressure regulating plate (5) and pressure regulating groove (211) sliding connection, pressure regulating groove (211) one side compensation runner (216), pressure regulating groove (211) one end and telescopic link (15) intermittent type intercommunication are kept away from in compensation runner (216).
2. A hybrid equal power hydraulic press according to claim 1, characterized in that: the fixing device (1) further comprises an object stage (12), a plurality of sliding grooves are formed in the base (11), the object stage (12) is connected with the sliding grooves in a sliding mode, the forming device (2) further comprises a die head (22), an induction seat (23) and a sealing ring (26), a bias groove (212) is formed in the pressure head (21), the die head (22) is movably connected with the bias groove (212), the object stage (12) is provided with a forming cavity (121), an adjusting chamber (111) is formed in the base (11), the forming cavity (121) is communicated with the adjusting chamber (111), the induction seat (23) is arranged in the forming cavity (121), a supporting rod (24) extends downwards to be provided with a supporting rod (24), a through hole is formed in the middle of the sealing ring (26), the lower end of the supporting rod (24) penetrates through the through hole, a reset spring (25) is arranged on the upper side of the sealing ring (26), the adjusting chamber (111) is located in a cavity at the lower side of the sealing ring (26) and is filled with hydraulic oil, and the supporting rod (24) is connected with the sealing ring (26) in a through hole sealing mode.
3. A hybrid equal power hydraulic press according to claim 2, characterized in that: a centrifugal groove (217) is arranged on the pressure head (21), the adjusting device (3) comprises a transmission component (31), the transmission component (31) is arranged in the centrifugal groove (217), the transmission component (31) comprises a transmission wheel (311) and an eccentric block (312), the centrifugal groove (217) is communicated with the offset groove (212), the driving wheel (311) is movably connected with the centrifugal groove (217), one side of the driving wheel (311) close to the offset groove (212) is in transmission connection with the die head (22), spring grooves (210) are arranged at two sides of the centrifugal groove (217), a pre-tightening spring (313) is arranged in each spring groove, one side of the pre-tightening spring (313) is fixedly connected with the spring groove (210), one side of the pre-tightening spring (313) far away from the spring groove (210) is in transmission connection with the transmission wheel (311), the spring groove (210) is obliquely arranged, and one side, close to the offset groove (212), of the spring groove (210) is located at a high position.
4. A hybrid equal power hydraulic press according to claim 3, characterized in that: the transmission assembly (31) further comprises a transmission rod (314), a reversing groove (215) is formed in the pressure head (21), the reversing groove (215) is communicated with the spring groove (210), two ends of the transmission rod (314) are respectively arranged in the reversing groove (215) and the spring groove (210), the adjusting device (3) further comprises a reversing plate (32), the upper end of the transmission rod (314) is in transmission connection with the reversing plate (32), a load increasing flow channel (214) is formed in the pressure head (21), the load increasing flow channel (214) is intermittently communicated with the reversing groove (215), a flow guide channel (321) is formed in the reversing plate (32), an outlet is formed in one side, close to the compensation flow channel (216), of the flow guide channel (321), a pressurizing area is formed between the pressure regulating plate (5) and the load increasing flow channel (214), and hydraulic oil is filled in the pressurizing area;
when increasing the load: the inlet of the flow guide channel (321) is communicated with the load increasing flow channel (214), and the outlet of the flow guide channel (321) is communicated with the compensation flow channel (216).
5. A hybrid equal power hydraulic press according to claim 4, characterized in that: an unloading flow channel (213) is arranged on the pressure head (21), one end of the unloading flow channel (213) is communicated with the pressure regulating groove (211), and the communication position of the unloading flow channel (213) and the pressure regulating groove (211) is positioned on one side of the pressure regulating plate (5) far away from the load increasing flow channel (214);
when unloading: the unloading runner (213) is communicated with an inlet of the guide runner (321), and the compensation runner (216) is communicated with an outlet of the guide runner (321).
6. A hybrid equal power hydraulic press according to claim 5, characterized in that: the adjusting device (3) further comprises a pressure reducing plate (33) and a friction plate (34), the pressure reducing plate (33) is of a cam structure, a separation flow channel (218) is arranged on the pressure head (2), two ends of the separation flow channel (218) are respectively communicated with an unloading flow channel (213) and a reversing groove (215), an opening and closing groove (219) is arranged in the middle section of the separation flow channel (218), the pressure reducing plate (33) is rotatably connected with the opening and closing groove (219), a pressure relief hole (331) is formed in the pressure reducing plate (33), the communication position of the separation flow channel (218) and the opening and closing groove (219) is located in the upper layer of the opening and closing groove (219), the opening and closing groove (219) is communicated with a bias groove (212), the die head (22) is in transmission connection with the friction plate (34), the friction plate (34) is in transmission connection with the pressure reducing plate (33), a pressure reducing opening (322) is formed in the reversing plate (32), and the pressure reducing opening (322) is communicated with a flow guide channel (321), the inlet of the pressure reducing port (322) is intermittently communicated with the separation flow passage (218).
7. A hybrid equal power hydraulic press according to claim 3, characterized in that: be equipped with wedge groove (122) on objective table (12), response seat (23) wedge setting, response seat (23) and wedge groove (122) are equipped with, wedge groove (122) are located between regulation room (111) and shaping chamber (121), regulation room (111) are through wedge groove (122) and shaping chamber (121) intercommunication.
8. A hybrid equal power hydraulic press according to claim 6, characterized in that: the equal-power lower pressure hydraulic machine further comprises a liquid discharge pipe (6), and the liquid discharge pipe (6) is communicated with the pressure regulating groove (211).
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| CN202210007552.XA CN114311793A (en) | 2022-01-06 | 2022-01-06 | Hybrid power hydraulic press under equal power |
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| CN202210007552.XA CN114311793A (en) | 2022-01-06 | 2022-01-06 | Hybrid power hydraulic press under equal power |
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| CN114311793A true CN114311793A (en) | 2022-04-12 |
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| CN202210007552.XA Pending CN114311793A (en) | 2022-01-06 | 2022-01-06 | Hybrid power hydraulic press under equal power |
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| CN114871387A (en) * | 2022-04-21 | 2022-08-09 | 上海嘉朗实业南通智能科技有限公司 | Uniform-speed cooling equal-stress aluminum alloy casting mold device |
| CN115815404A (en) * | 2023-01-10 | 2023-03-21 | 江苏兴锻智能装备科技有限公司 | Multi-station continuous stamping device with positioning function |
| CN115971313A (en) * | 2023-01-28 | 2023-04-18 | 东莞市坤琦精密五金有限公司 | New energy automobile anticollision roof beam forming die of subsidiary automatic demoulding function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115971313A (en) * | 2023-01-28 | 2023-04-18 | 东莞市坤琦精密五金有限公司 | New energy automobile anticollision roof beam forming die of subsidiary automatic demoulding function |
| CN115971313B (en) * | 2023-01-28 | 2023-10-03 | 东莞市坤琦精密五金有限公司 | New energy automobile anticollision roof beam forming die of subsidiary automatic drawing of patterns function |
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