CN107881263B - Leather embossing machine - Google Patents
Leather embossing machine Download PDFInfo
- Publication number
- CN107881263B CN107881263B CN201711164839.9A CN201711164839A CN107881263B CN 107881263 B CN107881263 B CN 107881263B CN 201711164839 A CN201711164839 A CN 201711164839A CN 107881263 B CN107881263 B CN 107881263B
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- oil
- connecting pipe
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- 239000010985 leather Substances 0.000 title claims abstract description 31
- 238000004049 embossing Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 39
- 238000005485 electric heating Methods 0.000 claims description 26
- 238000003860 storage Methods 0.000 claims description 25
- 230000001360 synchronised effect Effects 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 82
- 238000007723 die pressing method Methods 0.000 description 26
- 239000010720 hydraulic oil Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/56—Ornamenting, producing designs, embossing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
Abstract
The utility model provides a leather embossing machine, is provided with the workstation including frame, is fixed with in the frame and hides oil tank and oil tank, and the workstation bottom is equipped with the holding down plate of taking the heating function, and the workstation top is fixed with the top board of taking the heating function, and the briquetting below is equipped with the big pneumatic cylinder that drives the briquetting and move up along "Z" direction and is equipped with the little pneumatic cylinder that can drive the piston rod of big pneumatic cylinder and reciprocate along "Z" direction, is fixed with the oil circuit control system of control big pneumatic cylinder and little pneumatic cylinder in the frame. The invention has the characteristics of rapidness and safety when the leather raw material is pressed, and is worth popularizing and applying.
Description
Technical Field
The invention relates to the field of high-end equipment manufacturing, in particular to a leather embossing machine for leather embossing.
Background
The hydraulic press is also called as a hydraulic forming press and is used for equipment for forming and processing various metal materials and nonmetal materials, the traditional hydraulic press utilizes a motor to directly drive an oil pump, and then the oil pump drives a piston on an oil cylinder to push upwards, so that a required finished product is extruded, when a pressure value required for a pressed material is relatively large, a high-power motor is required to generate enough torque to drive the oil pump, so that the oil cylinder is driven to push upwards, the high-power motor is relatively large in volume and high in energy consumption and high in price, and is not only unfavorable for the layout of a press space, but also low in efficiency.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides the energy-saving and efficient leather embossing machine, which meets the requirements of production enterprises on energy conservation and high efficiency of the leather embossing machine.
The invention solves the technical problems by adopting the technical scheme that: the leather embossing machine comprises a frame, a workbench arranged on the frame, a storage oil tank and an oil tank fixed on the frame, a lower electric plate arranged at the bottom end of the workbench, an upper electric plate fixed at the top end of the workbench, a large hydraulic cylinder for driving the lower electric plate to move upwards along Z direction and a small hydraulic cylinder for driving a piston rod of the large hydraulic cylinder to move upwards and downwards along Z direction arranged below the lower electric plate, an oil path control system for controlling the large hydraulic cylinder and the small hydraulic cylinder fixed on the frame, the oil path control system comprises a motor and a flywheel driven by the motor, the flywheel is externally connected with a single pump, the side part of the single pump is provided with a first electromagnetic reversing valve, a second electromagnetic reversing valve, a third electromagnetic reversing valve, a fourth electromagnetic reversing valve, a superimposed overflow valve, a first superimposed hydraulic control one-way valve, a second superimposed hydraulic control one-way valve and a liquid filling valve, the liquid outlet of the single-connection pump is communicated with the P hole of the electromagnetic reversing valve IV through a connecting pipe I, the P hole of the electromagnetic reversing valve II is connected with the connecting pipe I through a pipeline, the B hole of the electromagnetic reversing valve II is connected with the B hole of the superposition type overflow valve through a pipeline, the P hole of the electromagnetic reversing valve I is connected with the connecting pipe II through a pipeline, the P hole of the electromagnetic reversing valve III is connected with the A hole of the superposition type hydraulic control one-way valve I through a pipeline, the B hole of the electromagnetic reversing valve III is connected with the B hole of the superposition type hydraulic control one-way valve I through a pipeline, the B hole of the electromagnetic reversing valve IV is connected with the A hole of the superposition type hydraulic control one-way valve II through a pipeline, a pipeline is arranged between the B hole of the electromagnetic reversing valve I and a control oil way K of the liquid filling valve, the liquid inlet of the liquid filling valve is connected with the liquid outlet of the oil storage tank through a pipeline, a connecting pipe III is arranged between the liquid outlet of the liquid filling valve and the liquid outlet of the second superposed hydraulic control one-way valve, a connecting pipe IV is arranged between the liquid outlet of the first superposed hydraulic control one-way valve and the liquid inlet of the small hydraulic cylinder, the connecting pipe III is connected with the liquid inlet of the large hydraulic cylinder through a pipeline, and a pipeline is arranged between the liquid inlet of the single pump and the oil tank; the pressure relay is arranged on the connecting pipe IV, the pressure sensor is arranged on the connecting pipe III, the PLC controller is arranged on the rack, and the motor, the first electromagnetic reversing valve, the second electromagnetic reversing valve, the third electromagnetic reversing valve, the fourth electromagnetic reversing valve, the pressure relay and the pressure sensor are all connected with the PLC controller through lines. The PLC is a general programmable logic controller in the market, and can be selected from the brands of general Mitsubishi PLC, schneider PLC, uygur Unitronics, taida PLC, song PLC and the like in the market; the flywheel is a disk-shaped part with large rotational inertia and acts like an energy storage, so that under the condition that the flywheel is driven by the low-power motor to rotate, large torque can be generated due to inertia and used for driving the single pump to rotate, the flywheel is used for outputting high hydraulic oil, the flywheel is driven by the motor, and the torque output equivalent to that of the high-power motor can be generated by the low-power motor, so that the energy-saving effect is achieved; the hydraulic oil way control system has the advantages that only one single pump is needed to supply oil to the small hydraulic cylinder and the large hydraulic cylinder, so that the complexity of a hydraulic oil way is reduced, and the cost is also reduced; the first electromagnetic reversing valve, the second electromagnetic reversing valve, the third electromagnetic reversing valve and the fourth electromagnetic reversing valve are all general products in the market, and products of the companies such as sea-Tek hydraulic limited company, dongguan-force large electromechanical limited company and the like can be selected; the first overlapped hydraulic control check valve and the second overlapped hydraulic control check valve are all common products in the market, and can be selected from products of Suzhou Xu mechanical limited company and Suzhou Kang Nuojia electromechanical limited company; the overlapped overflow valve is a general product in the market, and can be selected from products of companies such as Suzhou Berst electromechanical equipment limited company, ningbo reach hydraulic limited company and the like; when leather with different patterns is pressed according to the requirement, the pressing plates with different patterns are required to be replaced, so that the lower die pressing plate is fixedly arranged at the lower electric heating plate, and the upper die pressing plate is fixedly arranged at the upper electric heating plate.
Further perfecting, the side part of the second connecting pipe is provided with an overflow valve, and a P hole of the overflow valve is connected with the second connecting pipe through a pipeline. The overflow valve has the function of further protecting the pressure stabilization of the hydraulic system when the second electromagnetic directional valve is damaged or fails.
Further perfecting, the first connecting pipe is provided with a pressure transmission connected with the PLC controller by a circuit. The pressure transmission has the advantages that the PLC can be utilized to conveniently adjust the input pressure of the large hydraulic cylinder, so that the operation can be convenient, leather materials can be conveniently pressed by adjusting different pressures, and leather products with different patterns can be pressed.
Further perfecting, the first electromagnetic directional valve, the second electromagnetic directional valve, the third electromagnetic directional valve, the fourth electromagnetic directional valve, the overflow valve and an oil return port T of the overlapped overflow valve are respectively connected with a pipeline between the oil tanks; an oil return pipe which is longitudinally arranged is fixed in a cavity of the oil storage tank, the top end of the oil return pipe is arranged at the top end of the oil storage tank, a connecting pipe five is arranged between the bottom of the oil return pipe and the oil tank, and a valve switch I is arranged on the connecting pipe five. The oil return pipe has the function of limiting the height of the oil in the oil storage tank, and when the hydraulic oil in the pressure oil cylinder flows back to the oil storage tank, the hydraulic oil flowing back to the oil storage tank comprises the hydraulic oil flowing back into the pressure oil cylinder from the third connecting pipe, so that more hydraulic oil flows back to the oil storage tank than the hydraulic oil originally flowing back into the pressure oil cylinder from the oil storage tank, and the redundant hydraulic oil flowing back to the oil storage tank can flow back to the oil storage tank through the return pipe; the electromagnetic reversing valve I, the electromagnetic reversing valve II, the electromagnetic reversing valve III, the electromagnetic reversing valve IV, the overlapped overflow valve and the oil return port T of the overflow valve are respectively connected with the oil tank through pipelines, so that the oil which flows back is convenient to flow back into the oil tank for recycling.
Further perfecting, a driving piece for driving the lower electric heating plate to move along the Y direction is arranged on a piston rod of the large hydraulic cylinder, the driving piece comprises a jacking block, a carriage is arranged above the jacking block, the lower electric heating plate is fixed on the top surface of the carriage, longitudinal plates are fixed on the left side and the right side parts of the carriage along the X direction, a supporting table is fixed at the bottom of the longitudinal plates, a positioning plate which is aligned with the supporting table is fixed on the side parts of the longitudinal plates, a track groove is arranged on the bottom surface of the positioning plate, a pair of transverse shafts which are arranged in a front-back opposite way are arranged below the jacking block, rolling bearings are arranged at the left end and the right end of each transverse shaft along the X direction, an inner ring of each rolling bearing is fixed with the transverse shaft, the lower part of an outer ring of each rolling bearing is supported by the supporting table, the upper part of the outer ring of each rolling bearing is matched with the track groove, a group of sleeves is fixed on the bottom surface of each sleeve, and transverse through holes which transversely penetrate through the sleeves are arranged on the top surface of each sleeve, the transverse shaft penetrates through the transverse through hole, a compression spring I which presses the transverse shaft to be attached to the bottom surface of the jacking block is arranged between the transverse shaft and the transverse through hole, the dragging plate forms a first interval with the top surface of the jacking block through the elastic force of the compression spring I, the transverse shaft forms a second interval larger than the first interval with the transverse through hole through the elastic force of the compression spring I, the jacking block is fixedly provided with a mounting frame which is provided with a bearing, the outer ring of the bearing is fixedly arranged on the mounting frame, the inner ring of the bearing is fixedly provided with a screw nut, a first synchronous wheel is fixedly arranged on the screw nut, a servo motor is fixedly arranged on the mounting frame, a second synchronous wheel is fixedly arranged on a rotating shaft of the servo motor, a synchronous belt is arranged between the second synchronous wheel and the first synchronous wheel, the screw nut is connected with a screw in a threaded manner, the outer end of the screw is fixedly arranged on the lateral part of the dragging plate, the jacking block is provided with a through hole for the screw to move, the top block is driven by a piston rod of the large hydraulic cylinder to move up and down along the Z direction. The driving piece is used for conveying the lower electric heating plate along the Y direction, so that leather raw materials can be conveniently placed on the lower die pressing plate, then conveyed below the upper die pressing plate and embossed; the transverse shaft, the sleeve and the compression spring are used for forming a first interval between the carriage and the top block, so that friction is avoided between the carriage and the top block when the servo motor is used for driving the screw rod and driving the carriage to move; the transverse shaft and the transverse through hole form a second interval larger than the first interval through the elasticity of the compression spring I, and the effect is that when the jacking block is jacked upwards through the piston rod of the large hydraulic cylinder and the lower electric heating plate is pressed on the upper electric heating plate, the piston rod of the large hydraulic cylinder can continuously drive the jacking block to move upwards due to the first interval, and the jacking block can continuously push the jacking block to move upwards through the piston rod of the large hydraulic cylinder and compress the compression spring I so as to enable the jacking block to be pressed on the bottom surface of the carriage to press the upper electric heating plate at high pressure due to the fact that the interval of the second interval is larger than the first interval.
Further perfecting, the top end of a piston rod of the large hydraulic cylinder is fixed with a column block, the column block is fixed with a top block, a mounting block which can move on the column block along the Z direction but cannot rotate on the column block is arranged on the column block, each transverse shaft is fixed on the mounting block, a guide block is fixed on a cylinder body of the large hydraulic cylinder, a fixing block is fixed on the side part of the mounting block, and a plugging rod which is plugged on the guide block along the Z direction is fixed on the bottom surface of the fixing block. The column block is square; the column block, the mounting block, the guide block, the fixing block and the plug-in rod have the functions of guiding the carriage to move upwards, avoiding the situation that the lower electric heating plate deflects when being stressed, and limiting the piston rod of the large hydraulic cylinder to rotate when pressing leather, thereby influencing the embossing quality of the leather.
Further perfecting, the top surface of the guide block is provided with a compression spring II sleeved on the insertion rod. The compression spring II has the function of buffering the mounting block when the piston rod of the large hydraulic cylinder returns to move downwards.
Further perfecting, fixing a bracket on the oil storage tank, fixing a travel switch on the bracket, fixing a touch block matched with the travel switch in position on the bottom surface of the supporting table, and connecting the travel switch with a PLC (programmable logic controller) in a circuit manner; both sides of the carriage along the Y direction are fixed with blocking plates, and both sides of the top block along the Y direction are fixed with rubber cushion blocks respectively matched with the two blocking plates. The support, the touch block and the travel switch have the functions that when the lower die pressing plate moves below the upper die pressing plate, signals are given to the PLC controller, so that program connection of the PLC controller is facilitated, when uncontrollable factors are avoided, the lower die pressing plate does not reach below the upper die pressing plate, the PLC controller controls a piston rod of the large hydraulic cylinder to drive the lower die pressing plate to move upwards, and therefore the lower die pressing plate and the upper die pressing plate can be caused to be not aligned and pressed, damage to the two die pressing plates can be caused, and further safety is achieved; the blocking plate and the rubber cushion block have the function of buffering in place when the carriage reciprocates along the Y direction.
Further perfecting, the bottom of the oil storage tank is provided with an oil drain pipe which is mutually communicated with the oil tank, and a valve switch II is arranged on the oil drain pipe. The oil drain pipe has the function of discharging the hydraulic oil in the oil storage tank, thereby replacing the hydraulic oil and facilitating the overhaul of the hydraulic cylinder.
Further perfecting, a transverse extending bracket fixed on the frame is arranged at the feeding end of the workbench, and emergency stop buttons connected with a PLC (programmable logic controller) are arranged on the left side surface and the right side surface of the transverse extending bracket along the X direction; a starting button connected with a PLC controller line is arranged at the left side and the right side of the front end part of the transversely extending bracket along the X direction; an infrared grating sensor which is matched with the feeding end of the workbench in position and connected with the PLC controller in a circuit is arranged on the rack; the frame is provided with a power box, a control screen and a pressure gauge which are connected with a PLC controller through lines. The emergency stop button has the function of increasing the operation safety of the embossing machine, and when the emergency stop button is pressed, the program of the PLC can return to the original point, so that the large hydraulic cylinder and the servo motor return to the initial positions, and the safety is ensured; the infrared grating sensor has the effect that when a hand of a person is still in the working area of the workbench, the large hydraulic cylinder and the small hydraulic cylinder cannot work even if the starting button is touched, so that the safety is further promoted; the control screen is convenient for man-machine interaction operation, and the pressure gauge is convenient for observing the real-time pressure value and for subsequently changing the parameters in the PLC; the infrared grating sensor is a product existing in the market, and can be selected from Shandong Mu Kechuan sensor limited company, shenzhen Shi En Bang technology limited company.
The beneficial effects of the invention are as follows: the invention has smart and reasonable structural design, the small hydraulic cylinder can quickly move up and charge liquid to the piston rod of the large hydraulic cylinder by utilizing the hydraulic oil way system, and then the large hydraulic cylinder is pressurized by utilizing the flywheel, so that the leather embossing is quick and energy-saving, the lower die pressing plate is brought out by the driving part and the leather raw material is fed outside the workbench, thereby being convenient for leather feeding, safer and worth popularizing and applying.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of the other side of the present invention;
FIG. 3 is a view from the perspective of FIG. 1 in the direction A;
FIG. 4 is a view from the B-direction perspective of FIG. 1;
FIG. 5 is a view from the C-direction of FIG. 1;
FIG. 6 is a schematic view of section D-D of FIG. 1;
fig. 7 is a schematic view of section E-E of fig. 4.
FIG. 8 is a block diagram of the area of the sleeve engaging the transverse shaft in the present invention;
FIG. 9 is a schematic diagram of the operation of the oil circuit control system of the present invention;
FIG. 10 is a schematic diagram of the operation of the driving member of the present invention;
fig. 11 is a partial enlarged view of the area F in fig. 10.
Reference numerals illustrate: the device comprises a frame 1, a workbench 1a, a hidden oil tank 1b, an oil tank 1c, a transversely extending bracket 1-1, a lower electric heating plate 2, an upper electric heating plate 3, a large hydraulic cylinder 4, a column block 4-1, a guide block 4-2, a small hydraulic cylinder 5, an oil circuit control system 6, a motor 6-1, a flywheel 6-2, a single pump 6-3, a first electromagnetic directional valve 6-4, a second electromagnetic directional valve 6-5, a third electromagnetic directional valve 6-6, a fourth electromagnetic directional valve 6-7, an overflow valve 6-8, a superimposed overflow valve 6-9, a first superimposed hydraulic check valve 6-10, a second superimposed hydraulic check valve 6-11, a liquid charging valve 6-12, a first connecting pipe 6-13, a second connecting pipe 6-14, a third connecting pipe 6-15, a fourth connecting pipe 6-16, a pressure relay 6-17, a pressure sensor 6-18, a pressure variable device 6-19, a PLC controller 7, a control screen 8, a fifth valve switch 10, a driver 11, a jack block 11-1, a through hole 11-1, a first dragging plate 11-2-11, a second longitudinal supporting plate 11-11, a synchronous bearing 11-11, a synchronous bearing 11, 11-11, a 11, 11-11 and a synchronous bearing 11, 11 a, 11 and a synchronous bearing 11, the device comprises mounting blocks 11-17, fixing blocks 11-18, inserting rods 11-19, compression springs II 11-20, supports 11-21, travel switches 11-22, rubber cushion blocks 11-23, oil drain pipes 12, valve switches II 13, emergency stop buttons 14, starting buttons 15, infrared grating sensors 16, a power box 17, a pressure gauge 18, an upper die pressing plate 19 and a lower die pressing plate 20.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
referring to the drawings: the leather embossing machine comprises a frame 1, a workbench 1a arranged on the frame 1, a storage oil tank 1B and an oil tank 1c fixed on the frame 1, a lower electric heating plate 2 arranged at the bottom end of the workbench 1a, an upper electric heating plate 3 fixed at the top end of the workbench 1a, a large hydraulic cylinder 4 arranged below the lower electric heating plate 2 and used for driving the lower electric heating plate 2 to move upwards along Z direction, and a small hydraulic cylinder 5 arranged below the lower electric heating plate 2 and used for driving a piston rod of the large hydraulic cylinder 4 to move upwards and downwards along Z direction, an oil circuit control system 6 for controlling the large hydraulic cylinder 4 and the small hydraulic cylinder 5 is fixed on the frame 1, the oil circuit control system 6 comprises a motor 6-1 and a flywheel 6-2 driven by the motor 6-1, the flywheel 6-2 is externally connected with a single pump 6-3, the side part of the single pump 6-3 is provided with a first electromagnetic directional valve 6-4, a second electromagnetic directional valve 6-5, a third electromagnetic directional valve 6-6, a fourth electromagnetic directional valve 6-7, a superimposed overflow valve 6-9, a first superimposed hydraulic control one-way valve 6-10, a second superimposed hydraulic control one-way valve 6-11 and a filling valve 6-12, the liquid outlet of the single pump 6-3 is communicated with the P hole of the fourth electromagnetic directional valve 6-7 through a first connecting pipe 6-13, the P hole of the second electromagnetic directional valve 6-5 is connected with the first connecting pipe 6-13 through a pipeline, the B hole of the second electromagnetic directional valve 6-5 is connected with the B hole of the superimposed overflow valve 6-9 through a pipeline, the P hole of the first electromagnetic directional valve 6-4 is connected with the second connecting pipe 6-14 between the first connecting pipe 6-13, the P hole of the third electromagnetic directional valve 6-6 is connected with the first connecting pipe 6-13 through a pipeline, the electromagnetic reversing valve three 6-6 hole A and the overlapping hydraulic control one-way valve one 6-10 hole A are connected through a pipeline, the electromagnetic reversing valve three 6-6 hole B and the overlapping hydraulic control one-way valve one 6-10 hole B are connected through a pipeline, the electromagnetic reversing valve four 6-7 hole A and the overlapping hydraulic control one-way valve two 6-11 hole A are connected through a pipeline, the electromagnetic reversing valve four 6-7 hole B and the overlapping hydraulic control one-way valve two 6-11 hole B are connected through a pipeline, a pipeline is arranged between the electromagnetic reversing valve one 6-4 hole B and the control oil way K of the liquid filling valve 6-12, a pipeline is arranged between the liquid inlet of the liquid filling valve 6-12 and the liquid outlet of the tank 1B, a connecting pipe three 6-15 is arranged between the liquid outlet of the liquid filling valve 6-12 and the liquid outlet of the overlapping hydraulic control one-way valve two 6-11, a four 6-16 is arranged between the liquid outlet of the overlapping hydraulic control one-way valve one 6-10 and the liquid inlet of the small hydraulic cylinder 5, a pipeline is arranged between the three 6-15 and the liquid inlet of the large connecting pipe 4, and the single-pump is arranged between the liquid inlet of the connecting pipe 1-3 and the tank; the four connecting pipes 6-16 are provided with pressure relays 6-17, the three connecting pipes 6-15 are provided with pressure sensors 6-18, the frame 1 is provided with a PLC controller 7, and the motor 6-1, the first electromagnetic directional valve 6-4, the second electromagnetic directional valve 6-5, the third electromagnetic directional valve 6-6, the fourth electromagnetic directional valve 6-7, the pressure relays 6-17 and the pressure sensors 6-18 are all connected with the PLC controller 7 through lines.
The side part of the second connecting pipe 6-14 is provided with an overflow valve 6-8, and a P hole of the overflow valve 6-8 is connected with the second connecting pipe 6-14 through a pipeline.
The first connecting pipe 6-13 is provided with a pressure transmission 6-19 connected with the PLC 7 in a circuit way.
The first electromagnetic directional valve 6-4, the second electromagnetic directional valve 6-5, the third electromagnetic directional valve 6-6, the fourth electromagnetic directional valve 6-7, the overflow valve 6-8 and the oil return port T of the overlapped overflow valve 6-9 are respectively connected with the oil tank 1c through pipelines; an oil return pipe 1b-1 which is longitudinally arranged is fixed in the cavity of the oil storage tank 1b, the top end of the oil return pipe 1b-1 is arranged at the top end of the oil storage tank 1b, a connecting pipe five 9 is arranged between the bottom of the oil return pipe 1b-1 and the oil tank 1c, and a valve switch one 10 is arranged on the connecting pipe five 9.
The piston rod of the large hydraulic cylinder 4 is provided with a driving piece 11 for driving the lower electric heating plate 2 to move along the Y direction, the driving piece 11 comprises a jacking block 11-1, a dragging plate 11-2 is arranged above the jacking block 11-1, the lower electric heating plate 2 is fixed on the top surface of the dragging plate 11-2, the left and right side parts of the dragging plate 11-2 along the X direction are both fixed with a longitudinal plate 11-2a, the bottom of the longitudinal plate 11-2a is fixed with a supporting table 11-3, the side part of the longitudinal plate 11-2a is fixed with a positioning plate 11-4 aligned with the supporting table 11-3, the bottom surface of the positioning plate 11-4 is provided with a track groove 11-4a, a pair of transverse shafts 11-5 which are arranged in a front-back opposite manner are arranged below the jacking block 11-1, the left and right ends of each transverse shaft 11-5 along the X direction are both provided with rolling bearings 11-6, the inner ring of the rolling bearing 11-6 is fixed with the transverse shaft 11-5, the lower part of the outer ring of the rolling bearing 11-6 is supported by a supporting table 11-4, the upper part of the outer ring of the rolling bearing 11-6 is matched with a track groove 11-4a, a group of sleeves 11-7 are fixed on the bottom surface of a top block 11-1, the top surface of each sleeve 11-7 is provided with a transverse through hole 11-7a which transversely penetrates through the sleeve 11-7, the transverse shaft 11-5 penetrates through the transverse through hole 11-7a, a compression spring I11-8 which presses the transverse shaft 11-5 to be attached to the bottom surface of the top block 11-1 is arranged between the transverse shaft 11-5 and the transverse through hole 11-7a, the carriage 11-2 forms a space A between the bottom surface of the carriage 11-2 and the top surface of the top block 11-2 by the elasticity of the compression spring I11-8, the transverse shaft 11-5 forms a space second b larger than the space first a between the transverse shaft 11-5 and the transverse through hole 11-7a through the elasticity of the compression spring first 11-8, the mounting frame 11-9 is fixed on the top block 11-1, the bearing 11-10 is arranged on the mounting frame 11-9, the outer ring of the bearing 11-10 is fixed on the mounting frame 11-9, the lead screw nut 11-11 is fixed on the inner ring of the bearing 11-10, the synchronous wheel first 11-12 is fixed on the lead screw nut 11-11, the servo motor 11-13 is fixed on the mounting frame 11-9, the synchronous wheel second 11-14 is fixed on the rotating shaft of the servo motor 11-13, the synchronous belt 11-15 is arranged between the synchronous wheel second 11-14 and the synchronous wheel first 11-12, the lead screw nut 11-11 is connected with the screw rod 11-16 through threads, the outer end of the lead screw 11-16 is fixed with the side part of the carriage 11-2, the through hole 11-1a for the lead screw 11-16 to move is formed on the top block 11-1, and the top block 11-1 moves up and down along the Z direction through the driving of the piston rod of the large hydraulic cylinder 4.
The top end of a piston rod of the large hydraulic cylinder 4 is fixedly provided with a column block 4-1, the column block 4-1 and the top block 11-1 are fixed together, the column block 4-1 is provided with a mounting block 11-17 which can move on the column block 4-1 along the Z direction but cannot rotate on the column block 4-1, each transverse shaft 11-5 is fixed on the mounting block 11-17, a guide block 4-2 is fixed on a cylinder body of the large hydraulic cylinder 4, the side part of the mounting block 11-17 is fixedly provided with a fixing block 11-18, and the bottom surface of the fixing block 11-18 is fixedly provided with a plugging rod 11-19 which is plugged on the guide block 4-2 along the Z direction.
The top surface of the guide block 4-2 is provided with a compression spring II 11-20 sleeved on the plug rod 11-19.
A bracket 11-21 is fixed on the oil storage tank 1b, a travel switch 11-22 is fixed on the bracket 11-21, a touch block 11-3a matched with the travel switch 11-22 in position is fixed on the bottom surface of the supporting table 11-3, and the travel switch 11-22 is connected with the PLC 7 in a circuit manner; the two side parts of the carriage 11-2 along the Y direction are fixed with blocking plates 11-2b, and the two side surfaces of the top block 11-1 along the Y direction are fixed with rubber cushion blocks 11-23 respectively matched with the two blocking plates 11-2 b.
The bottom of the oil storage tank 1b is provided with an oil drain pipe 12, an oil drain pipe 1d is communicated with the oil tank 1b, and a valve switch II 13 is arranged on the oil drain pipe 12.
The feeding end of the workbench 1a is provided with a transverse extension bracket 1-1 fixed on the frame 1, and the left and right sides of the transverse extension bracket 1-1 along the X direction are provided with emergency stop buttons 14 connected with a PLC 7 in a circuit manner; a start button 15 connected with the PLC 7 in a circuit is arranged at the left side and the right side of the front end part of the transverse extension bracket 1-1 along the X direction; an infrared grating sensor 16 which is matched with the feeding end position of the workbench 1a and is connected with the PLC 7 in a circuit manner is arranged on the frame 1; the frame 1 is provided with a power box 17, a control screen 8 and a pressure gauge 18 which are connected with the PLC 7 in a line.
The working principle of the invention is as follows: the power supply is turned on, the motor 6-1 is started and drives the flywheel 6-2 to rotate, then the starting button 15 is pressed, at this time, the PLC 7 is programmed to start, the motor 6-1 drives the flywheel 6-2 to rotate and simultaneously drives the single pump 6-3, the pressure of an oil circuit system is controlled by the overlapped overflow valve 6-9, the oil output by the single pump 6-3 enters the P hole of the electromagnetic directional valve I6-4 and the P hole of the electromagnetic directional valve III 6-6, at this time, the head a of the electromagnetic directional valve I6-4 and the head a of the electromagnetic directional valve III 6-6 are simultaneously powered on, the P hole B of the electromagnetic directional valve I6-4 is opened to charge the valve 6-12, the oil flowing through the electromagnetic directional valve III 6-6 enters the A hole from the P hole and enters the small hydraulic cylinder 4 through the overlapped hydraulic control one-way valve III 6-10, the piston rod of the large hydraulic cylinder 4 is quickly jacked up by the piston rod of the small hydraulic cylinder 5 and drives the lower pressing die plate 22 to quickly rise, oil in the oil storage tank 1B quickly enters the large hydraulic cylinder 4 and rises in place, the pressure relay 6-17 is powered on, the head a of the electromagnetic directional valve I6-4 is powered off, so that the filling valve 6-12 is self-locked, the head a of the electromagnetic directional valve IV 6-7 is restarted, the head a of the electromagnetic directional valve IV 6-7 is powered on, oil enters the hole A from the P hole of the electromagnetic directional valve IV 6-7, the oil enters the large hydraulic cylinder 4 through the overlapped hydraulic control one-way valve II 6-11 to be pressurized, and when the pressure reaches the pressure set by the pressure sensor 6-18, the head a of the electromagnetic directional valve III 6-6 and the head a of the electromagnetic directional valve IV 6-7 are powered off simultaneously, the electromagnetic directional valve III 6-6 and the electromagnetic directional valve IV 6-7 return to the middle position for pressure maintaining, when the pressure maintaining is carried out, the PLC 7 starts the head a of the electromagnetic directional valve II 6-5 and leads P to B, excessive pressure in the hydraulic system is released through the overlapped overflow valve 6-9, the pressure maintaining is delayed in place, the head B of the electromagnetic directional valve III 6-6 and the head B of the electromagnetic directional valve IV are simultaneously powered on, P hole oil of the electromagnetic directional valve III 6-6 enters the B hole, the overlapped hydraulic control one-way valve I6-10 is pried open, thus leading A on the electromagnetic directional valve III 6-6 to be communicated with T, simultaneously oil of the electromagnetic directional valve IV 6-7 enters the B hole from the P hole, the overlapped hydraulic control one-way valve II 6-11 is pried open, so that the A through T on the electromagnetic directional valve IV 6-7 and the large hydraulic cylinder 4 and the small hydraulic cylinder 5 discharge oil at the same time, in order to further accelerate the downward moving speed of the piston rod of the large hydraulic cylinder 4, the a head of the electromagnetic directional valve I6-4 and the a head of the electromagnetic directional valve II 6-5 are powered on at the same time, the oil of the electromagnetic directional valve I6-4 enters the B hole from the P hole, the liquid filling valve 6-12 is opened, the oil flow of the large hydraulic cylinder 4 is hidden in the oil tank 1B, the lower die pressing plate 22 is quickly lowered, the oil of the electromagnetic directional valve II 6-5 is pried open from the P hole to the B hole, the system pressure is quickly lowered, and the normal operation of the motor 6-1 is ensured (as shown in figure 9).
The working principle of the driving piece in the invention is as follows: the lower die pressing plate 20 is firstly installed and fixed at the lower electric heating plate 2, and the upper die pressing plate 19 is installed and fixed at the upper electric heating plate 3; when the lower die pressing plate 20 needs to be taken out of the working table 1a area of the embossing machine, the start button 15 is pressed, the PLC controller 7 controls the servo motor 11-13 to rotate, the servo motor 11-13 drives the synchronous wheel two 11-14 and drives the synchronous wheel one 11-12 through the synchronous belt 11-15, then drives the lead screw nut 11-12 to rotate and drives the lead screw 11-16 to move, so that the lower die pressing plate 20 is driven to move out of the working table 1a area of the embossing machine, then leather materials are placed on the lower die pressing plate 22 to be laid flat, then the start button 15 is pressed again, the PLC controller 15 controls the servo motor 11-13 to reversely rotate, the lower die pressing plate 20 drives the working table 1a area of the machine to be taken back to be embossed through the servo motor 11-13 and touches the travel switch 11-22 through the touch block 11-3a, the PLC 7 is enabled to obtain signals and stop the work of the servo motor 11-3, so that the paved leather raw material is ensured to be just positioned under the upper die pressing plate 19, then the PLC 7 controls the piston rod of the large hydraulic cylinder 4 to drive the lower die pressing plate 20 to press with the upper die pressing plate 19 firstly, the piston rod of the large hydraulic cylinder 4 continuously drives the top block 11-1 to move upwards because a gap a is reserved between the carriage 11-2 and the top block 11-1, and the top block 11-1 continuously moves upwards and drives the compression spring I11-8 to compress through the sleeve 11-7 which moves upwards because a gap b larger than the gap a is reserved between the transverse shaft 11-5 and the bottom surface of the transverse through hole 11-7a, so that the carriage 11-2 can be ensured to move, the friction with the top block 11-1 is avoided, and the advantage that the lower die pressing plate 20 can be pressed by high pressure is solved; the downward moving distance of the large hydraulic cylinder 4 can be adjusted by controlling the screen 8, so that the time for feeding the carriage 11-2 by moving the driver 1 can be reduced, and the working efficiency can be increased (as shown in fig. 6, 7, 8, 10 and 11).
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the invention.
Claims (10)
1. The utility model provides a leather embossing machine, includes frame (1) be provided with workstation (1 a), characterized by on frame (1): the machine frame (1) is fixedly provided with a hidden oil tank (1 b) and an oil tank (1 c), the bottom end of the workbench (1 a) is provided with a lower electric heating plate (2), the top end of the workbench (1 a) is fixedly provided with an upper electric heating plate (3), the lower part of the lower electric heating plate (2) is provided with a large hydraulic cylinder (4) for driving the lower electric heating plate (2) to move upwards along the Z direction and a small hydraulic cylinder (5) for driving a piston rod of the large hydraulic cylinder (4) to move upwards and downwards along the Z direction, the machine frame (1) is fixedly provided with an oil way control system (6) for controlling the large hydraulic cylinder (4) and the small hydraulic cylinder (5), the oil way control system (6) comprises a motor (6-1) and a flywheel (6-2) driven by the motor (6-1), the flywheel (6-2) is externally connected with a single pump (6-3), the side part of the single pump (6-3) is provided with an electromagnetic reversing valve I (6-4), an electromagnetic reversing valve II (6-5), an electromagnetic reversing valve III (6-6), a 6-7), an electromagnetic reversing valve II (6-7), a superposed valve II (6-7) and an overflow valve (6-7) one-way control one-way valve and a one-way valve (12) one-way valve and an overflow valve one-way valve (12), the liquid outlet of the single-connection pump (6-3) is communicated with the P hole of the electromagnetic directional valve IV (6-7) through a connecting pipe I (6-13), the P hole of the electromagnetic directional valve II (6-5) is connected with the A hole of the connecting pipe I (6-13) through a pipeline, the B hole of the electromagnetic directional valve II (6-5) is connected with the B hole of the overlapped overflow valve (6-9) through a pipeline, the P hole of the electromagnetic directional valve I (6-4) is connected with the connecting pipe II (6-14) through a connecting pipe I (6-13), the P hole of the electromagnetic directional valve III (6-6) is connected with the pipeline between the A hole of the electromagnetic directional valve III (6-6) and the A hole of the overlapped hydraulic control one-way valve I (6-10) through a pipeline, the B hole of the electromagnetic directional valve III (6-6) is connected with the B hole of the overlapped hydraulic control one-way valve I (6-10) through a pipeline, the electromagnetic directional valve IV (6-7) is connected with the B hole of the electromagnetic directional valve II (6-7) through a pipeline between the A hole of the electromagnetic directional valve IV (6-7) and the overlapped hydraulic control one-way valve I (6-10) through a pipeline, the electromagnetic directional valve IV (11) is connected with the electromagnetic directional valve II (6-7) through a pipeline between the B hole of the electromagnetic directional valve IV (6-7) and the pipeline, the liquid inlet of the liquid filling valve (6-12) is connected with the liquid outlet of the oil storage tank (1 b) through a pipeline, a connecting pipe III (6-15) is arranged between the liquid outlet of the liquid filling valve (6-12) and the liquid outlet of the overlapped hydraulic control one-way valve II (6-11), a connecting pipe IV (6-16) is arranged between the liquid outlet of the overlapped hydraulic control one-way valve I (6-10) and the liquid inlet of the small hydraulic cylinder (5), the connecting pipe III (6-15) is connected with the liquid inlet of the large hydraulic cylinder (4) through a pipeline, and a pipeline is arranged between the liquid inlet of the single pump (6-3) and the oil tank (1 c); install pressure relay (6-17) on connecting pipe IV (6-16), install pressure sensor (6-18) on connecting pipe III (6-15), install PLC controller (7) on frame (1), motor (6-1), electromagnetic reversing valve I (6-4), electromagnetic reversing valve II (6-5), electromagnetic reversing valve III (6-6), electromagnetic reversing valve IV (6-7), pressure relay (6-17), pressure sensor (6-18) all with PLC controller (7) line connection.
2. The leather embossing machine as set forth in claim 1, wherein: and the side part of the second connecting pipe (6-14) is provided with an overflow valve (6-8), and a P hole of the overflow valve (6-8) is connected with the second connecting pipe (6-14) through a pipeline.
3. The leather embossing machine as set forth in claim 1, wherein: and the first connecting pipe (6-13) is provided with a pressure transmission (6-19) connected with the PLC (7) in a circuit way.
4. The leather embossing machine as set forth in claim 2, characterized in that: the electromagnetic directional valves I (6-4), II (6-5), III (6-6), IV (6-7), and 6-8, and the oil return port T of the overlapped overflow valve (6-9) are respectively connected with the oil tank (1 c) through pipelines; an oil return pipe (1 b-1) longitudinally arranged is fixed in a cavity of the oil storage tank (1 b), the top end of the oil return pipe (1 b-1) is arranged at the top end of the oil storage tank (1 b), a connecting pipe five (9) is arranged between the bottom of the oil return pipe (1 b-1) and the oil tank (1 c), and a valve switch one (10) is arranged on the connecting pipe five (9).
5. The leather embossing machine as set forth in claim 1, wherein: the piston rod of the large hydraulic cylinder (4) is provided with a driving piece (11) for driving the lower electric heating plate (2) to move along the Y direction, the driving piece (11) comprises a top block (11-1), a carriage (11-2) is arranged above the top block (11-1), the lower electric heating plate (2) is fixed on the top surface of the carriage (11-2), the left and right side parts of the carriage (11-2) along the X direction are both fixed with a longitudinal plate (11-2 a), the bottom part of the longitudinal plate (11-2 a) is fixed with a supporting table (11-3), the side part of the longitudinal plate (11-2 a) is fixed with a positioning plate (11-4) aligned with the supporting table (11-3), the bottom surface of the positioning plate (11-4) is provided with a track groove (11-4 a), a pair of transverse shafts (11-5) which are arranged front and back relatively are arranged below the top block (11-1), the left and right side parts and the transverse shafts (11-5) are both sides of the transverse shafts (11-2) are both provided with a supporting table (11-6) along the X direction, the two ends of the rolling bearings (11-6) are fixed with the rolling bearings (11-6) through the supporting table (11-6), the upper part of the outer ring of the rolling bearing (11-6) is matched with the track groove (11-4 a), a group of sleeves (11-7) are fixed on the bottom surface of the top block (11-1), a transverse through hole (11-7 a) transversely penetrating through the sleeves (11-7) is formed in the top surface of each sleeve (11-7), the transverse shaft (11-5) penetrates through the transverse through hole (11-7 a), a compression spring I (11-8) for pressing the transverse shaft (11-5) to be attached to the bottom surface of the top block (11-1) is arranged between the transverse shaft (11-5) and the transverse through hole (11-7 a), the bottom surface of the carriage (11-2) and the top block (11-2) form a space I (a) through the elastic force of the compression spring I (11-8), the transverse shaft (11-5) forms a space II (a) larger than the space I (a) between the transverse shaft (11-5) and the transverse through hole (11-7 a), the top block (11-2) is provided with the mounting bracket (11-9) through the elastic force of the compression spring I (11-8), the outer ring of the bearing (11-10) is fixed on the mounting frame (11-9), the inner ring of the bearing (11-10) is fixed with a screw nut (11-11), a first synchronous wheel (11-12) is fixed on the screw nut (11-11), a servo motor (11-13) is fixed on the mounting frame (11-9), a second synchronous wheel (11-14) is fixed on a rotating shaft of the servo motor (11-13), a synchronous belt (11-15) is installed between the second synchronous wheel (11-14) and the first synchronous wheel (11-12), a screw (11-16) is connected to the screw nut (11-11) in a threaded mode, the outer end of the screw (11-16) is fixed with the side portion of the carriage (11-2), a through hole (11-1 a) for the screw (11-16) to move through is formed in the top block (11-1), and the top block (11-1) moves up and down along the Z direction through driving of a piston rod of the large hydraulic cylinder (4).
6. The leather embossing machine as set forth in claim 5, wherein: the top of big pneumatic cylinder (4) piston rod is fixed with post piece (4-1), post piece (4-1) is fixed together with kicking block (11-1), be equipped with on post piece (4-1) along installation piece (11-17) of "Z" direction on post piece (4-1) removal, but can not rotate on post piece (4-1), each cross axle (11-5) is fixed on installation piece (11-17), be fixed with guide block (4-2) on the cylinder body of big pneumatic cylinder (4), the lateral part of installation piece (11-17) is fixed with fixed block (11-18), the bottom surface of fixed block (11-18) is fixed with along spliced pole (11-19) of "Z" direction grafting on guide block (4-2).
7. The leather embossing machine as set forth in claim 6, wherein: the top surface of the guide block (4-2) is provided with a compression spring II (11-20) sleeved on the plug-in rod (11-19).
8. The leather embossing machine as set forth in claim 7, wherein: a bracket (11-21) is fixed on the oil storage tank (1 b), a travel switch (11-22) is fixed on the bracket (11-21), a touch block (11-3 a) matched with the travel switch (11-22) in position is fixed on the bottom surface of the supporting table (11-3), and the travel switch (11-22) is connected with a PLC (programmable logic controller) 7 in a line mode; the two side parts of the carriage (11-2) along the Y direction are both fixed with blocking plates (11-2 b), and the two side surfaces of the top block (11-1) along the Y direction are both fixed with rubber cushion blocks (11-23) respectively matched with the two blocking plates (11-2 b).
9. The leather embossing machine as set forth in claim 1, wherein: the bottom of the oil storage tank (1 b) is provided with an oil drain pipe (12), the oil drain pipe (1 d) is communicated with the oil tank (1 b), and a valve switch II (13) is arranged on the oil drain pipe (12).
10. The leather embossing machine as set forth in claim 8, wherein: a feeding end of the workbench (1 a) is provided with a transverse extending bracket (1-1) fixed on the frame (1), and emergency stop buttons (14) connected with a PLC (7) in a circuit are arranged on the left side surface and the right side surface of the transverse extending bracket (1-1) along the X direction; a starting button (15) connected with a PLC (7) in a circuit is arranged at the front end part of the transverse extension bracket (1-1) and at the left side and the right side along the X direction; an infrared grating sensor (16) which is matched with the feeding end position of the workbench (1 a) and is connected with the PLC (7) in a circuit manner is arranged on the frame (1); the power box (17), the control screen (8) and the pressure gauge (18) which are connected with the PLC (7) in a circuit are arranged on the frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164839.9A CN107881263B (en) | 2017-11-21 | 2017-11-21 | Leather embossing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164839.9A CN107881263B (en) | 2017-11-21 | 2017-11-21 | Leather embossing machine |
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| Publication Number | Publication Date |
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| CN107881263A CN107881263A (en) | 2018-04-06 |
| CN107881263B true CN107881263B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711164839.9A Active CN107881263B (en) | 2017-11-21 | 2017-11-21 | Leather embossing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109468419B (en) * | 2018-11-07 | 2021-07-06 | 温州职业技术学院 | Leather burnishing device is used in leather shoes production and processing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737368A (en) * | 2009-12-15 | 2010-06-16 | 盐城市智成机械制造有限公司 | Prefill valve of embosser |
| WO2012086415A1 (en) * | 2010-12-22 | 2012-06-28 | 日立建機株式会社 | Relief pressure control device for hydraulic work machine |
| CN207632827U (en) * | 2017-11-21 | 2018-07-20 | 浙江柱达机械科技有限公司 | Energy-efficient leather embossing machine |
-
2017
- 2017-11-21 CN CN201711164839.9A patent/CN107881263B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737368A (en) * | 2009-12-15 | 2010-06-16 | 盐城市智成机械制造有限公司 | Prefill valve of embosser |
| WO2012086415A1 (en) * | 2010-12-22 | 2012-06-28 | 日立建機株式会社 | Relief pressure control device for hydraulic work machine |
| CN207632827U (en) * | 2017-11-21 | 2018-07-20 | 浙江柱达机械科技有限公司 | Energy-efficient leather embossing machine |
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| 辊压机液压系统优化案例;李渊博;;水泥(第06期);67-68 * |
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