Full-automatic intelligent hydraulic machine

Abstract

The invention relates to the technical field of hydraulic forming equipment, and discloses a full-automatic intelligent hydraulic machine which comprises a rack and a bearing platform arranged on the rack and further comprises a lower die assembly, an intelligent pressing assembly, an automatic feeding assembly and an ejection assembly. According to the full-automatic intelligent hydraulic machine, the automatic feeding structure that quantitative feeding is conducted through the spiral feeding shaft, and the Roots blower is matched with the reciprocating material distribution frame to evenly distribute materials is adopted, a manual feeding mode is replaced, the problem of product performance fluctuation caused by uneven manual feeding density is solved, the production takt is greatly improved, and the large-scale production requirement is met; according to the full-automatic intelligent hydraulic machine, the resistance of the floating seat is dynamically adjusted through the proportional overflow valve, so that the female die adaptively floats along with the pressure change of the pressing die, all parts of a multi-step special-shaped structural part are uniformly pressed, the defects of cracks, dimensional deviation and the like caused by local overpressure or underpressure are effectively avoided, and the qualified rate of finished products is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic forming equipment, in particular to a full-automatic intelligent hydraulic machine. BACKGROUND

[0002] As an economic forming equipment, the powder product hydraulic machine is widely used in the production of parts in the fields of powder metallurgy and ceramics, etc. by virtue of the core functions of manual feeding, floating pressing and pulling demolding, and the advantages of PLC control and double process mode of constant pressure / constant stroke. The main machine adopts a three-beam four-column or frame structure, and the key control elements are selected from imported parts. The mechanical and electrical double positioning is realized through high-precision elements such as proximity switches and grating, and the positioning accuracy can reach ≤±0.02mm. The machine can be matched with a mold frame and a mold to provide a complete set of technical services.

[0003] The existing hydraulic machine still has some deficiencies in actual application. The feeding mode depends on manual operation, which is not only low in efficiency, but also poor in uniformity, resulting in inconsistent powder filling density and affecting the forming precision and performance stability of the product, which is difficult to meet the needs of large-scale production. In addition, the pressure transmission of floating pressing lacks precise control during the pressing process. SUMMARY

[0004] The present application aims to provide a full-automatic intelligent hydraulic machine to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a full-automatic intelligent hydraulic machine, comprising a rack and a bearing platform arranged on the rack, further comprising a lower die assembly, an intelligent pressing assembly, an automatic feeding assembly and an ejection assembly, wherein: The rack comprises a base and a side frame, the base is fixed to the ground by bolts, the side frame is symmetrically welded to the base, the bearing platform is welded to the top end of the side frame, and a control console is arranged on the bearing platform. The intelligent pressing assembly comprises a hydraulic cylinder, a hydraulic pump, a hydraulic pipeline, a pressing base, a pressing die, a pressure sensor and a hydraulic shaft. The hydraulic cylinder comprises a main hydraulic cylinder and an auxiliary hydraulic cylinder. The hydraulic cylinder is connected to the hydraulic pump through the hydraulic pipeline. One end of the hydraulic shaft is connected to the hydraulic cylinder, and the other end is fixedly connected to the pressing base by bolts.

[0006] The hydraulic pump is arranged on the bearing platform and electrically connected to the control console. The pressing die is fixed on the pressing base by bolts. A cross beam is welded between the side frames. The hydraulic cylinder is fixed on the cross beam by bolts.

[0007] The console controls the start of the hydraulic pump, and the hydraulic oil is delivered to the hydraulic cylinder through the hydraulic pipeline. The main hydraulic cylinder and the auxiliary hydraulic cylinder cooperatively drive the hydraulic shaft to press down, driving the pressing base and the pressing die to move downward. The pressure sensor collects the pressing pressure in real time and feeds back to the console, realizing closed-loop feedback, accurate constant pressure control, and ensuring the repeated positioning accuracy of the product through mechanical and electrical double positioning.

[0008] Further, the automatic feeding assembly comprises a storage bin, a spiral feeding shaft, a stepping motor, a feeding cylinder, a support, an electric telescopic rod and a distributing member. The bottom of the storage bin is connected to the feeding cylinder through a flange. The stepping motor is connected to the input end of a speed reducer. The output end of the speed reducer is connected to the spiral feeding shaft.

[0009] Further, the outer side of the spiral feeding shaft abuts against the inner wall of the feeding cylinder. The storage bin and the electric telescopic rod are both fixed on the support by bolts. The speed reducer is fixed on the feeding cylinder by bolts. The distributing member comprises a Roots blower, a distributing pipe and a flat distributing head. The air inlet of the Roots blower is connected to the output end of the feeding cylinder through a hose. The air outlet of the Roots blower is connected to the distributing pipe through a hose. The flat distributing head is provided with a plurality of flat distributing heads installed at the bottom of the distributing pipe at equal intervals.

[0010] Further, one end of the electric telescopic rod is connected to one side of the distributing frame. The ends of the distributing pipe are welded to the distributing frame. The Roots blower is fixed on the distributing frame by bolts. The bottom of the distributing frame at both ends is provided with a pulley. The pulley is embedded in a slide and is in sliding fit. The slide is welded to the base. The stepping motor and the electric telescopic rod are electrically connected to the console.

[0011] The setting realizes quantitative feeding through the spiral feeding shaft and uniform distribution through the Roots blower and the reciprocating distributing frame, completely solves the problems of low efficiency of manual feeding and uneven filling density, ensures the stability of product performance and meets the needs of large-scale production.

[0012] The powder raw material to be pressed is added to the storage bin of the automatic feeding assembly. The powder raw material falls from the bottom of the storage bin to the feeding cylinder. The equipment is started. The console sends a command to start the stepping motor. The stepping motor is decelerated through the speed reducer and drives the spiral feeding shaft to rotate against the inner wall of the feeding cylinder. The powder in the storage bin is quantitatively delivered to the end of the feeding cylinder. The Roots blower starts to suck the powder at the end of the feeding cylinder to the distributing pipe. Under the action of wind pressure, the powder is uniformly blown out of the flat distributing head below the distributing pipe into the cavity of the concave mold. At the same time, the electric telescopic rod drives the distributing frame to move reciprocally along the slide by the pulley, ensuring uniform filling of the powder in the cavity.

[0013] Further, the lower die assembly comprises a lower die seat, a die cavity and a fixing plate, the lower die seat is provided with a floating groove, the die cavity is embedded in the floating groove and is in sliding fit with the floating groove, the fixing plate is fixed symmetrically on both sides of the floating groove by bolts and extends to above the die cavity at one end, the lower die seat is fixed on the base by bolts, the pressure sensor is arranged in matrix and at the bottom of the floating groove, the top end of the pressure sensor abuts against the bottom surface of the die cavity, the pressure sensor is electrically connected with the control console, the inner side of the side frame is symmetrically welded with a sliding groove, the outer side of the die is symmetrically provided with two groups of sliding plates, the sliding plates are embedded in the sliding groove and are in sliding fit, and a guide shaft is welded between the cross beam and the base and penetrates through the sliding plates.

[0014] The die cavity is limited by the fixing plate to prevent the die cavity from being pushed out during demolding, the sliding plates outside the pressing base slide along the sliding groove and the guide shaft of the side frame, and the centering accuracy of the die and the die cavity is ensured.

[0015] Further, the ejecting assembly comprises a cylinder, a bottom plate, a top shaft and an ejecting plate, the bottom end of the cylinder is fixed on the base by bolts, the top end is fixedly connected with the bottom plate, the top surface of the bottom plate is welded with the top shaft at four corners, the top shaft penetrates through the lower die seat, and the ejecting plate is symmetrically welded on the top shaft, and the ejecting plate is embedded in the die cavity and is in sliding fit.

[0016] When the pressure reaches the set value in the pressure mode or the stroke reaches the set value in the stroke mode, the system automatically enters the pressure maintaining stage, after the pressure maintaining is completed, the hydraulic cylinder drives the die to move upward for resetting, the control console starts the cylinder of the ejecting assembly, the cylinder drives the bottom plate and the top shaft to move upward, the ejecting plate pushes the formed blank out of the die cavity, and one production cycle is completed.

[0017] Further, a die cavity proportional floating assembly is additionally arranged in the floating groove, the die cavity proportional floating assembly comprises a floating seat, a floating limiting shaft, a floating spring, a hydraulic cavity, a floating support shaft, a proportional overflow valve, a hydraulic oil tank and a displacement sensor, the floating seat is embedded in the floating groove and is in sliding fit with the floating groove, the floating limiting shaft is fixed on the bottom of the floating groove by screws and is uniformly arranged along the circumference of the floating seat, and the top of the floating limiting shaft is embedded in the floating seat and is in sliding fit.

[0018] Further, the floating spring is nested outside the floating limiting shaft and is welded at both ends with the floating seat and the bottom end of the floating limiting shaft respectively, the pressure sensor is fixed on the floating seat by bolts, the top of the floating seat abuts against the die cavity, and the bottom of the floating seat is fixed with the top end of the floating support shaft by screws.

[0019] Further, the floating support shaft is connected with the hydraulic cavity through a piston, the hydraulic cavity is welded on the base, the hydraulic cavity is connected with the proportional overflow valve through an oil pipe, the proportional overflow valve is connected with the hydraulic oil tank through a pipeline, the displacement sensor is fixed in the inner side of the floating groove and is located below the floating seat by screws, and the displacement sensor and the proportional overflow valve are electrically connected with the control console.

[0020] When pressing products with irregular shapes, parameters such as the floating stroke range of the die and the floating pressure ratio coefficient are set through the control console. Then, the equipment is started. When the die descends to contact the powder and applies pressure, the die is driven by the pressure to slide the floating seat downward along the floating limit axis. The floating spring is compressed, and at the same time, the floating support shaft descends in the hydraulic cavity, squeezing the hydraulic oil in the cavity. The displacement sensor collects the displacement data of the floating seat in real time and feeds it back to the control console. The control console adjusts the opening of the proportional relief valve according to the preset ratio coefficient to control the return speed of the hydraulic oil in the hydraulic cavity, thereby adjusting the floating resistance of the floating seat. This allows for dynamic matching of the floating speed of the die and the pressing speed of the die for multi-step and irregular shapes, so that all parts of the blank are evenly pressed, avoiding cracks and dimensional deviations caused by insufficient local pressing or excessive extrusion. After the pressure is held, the proportional relief valve is fully opened to release pressure, and the floating spring drives the floating seat and the die to reset.

[0021] Compared with the prior art, the present invention provides a fully automatic intelligent hydraulic press, which has the following beneficial effects: 1. This fully automatic intelligent hydraulic press uses a screw feeder to quantitatively feed material and a Roots blower to evenly distribute material with a reciprocating feeding frame. This automatic feeding structure replaces the manual feeding mode, which not only solves the problem of product performance fluctuation caused by uneven material density during manual feeding, but also greatly improves the production cycle and adapts to the needs of large-scale production.

[0022] 2. This fully automatic intelligent hydraulic press dynamically adjusts the resistance of the floating seat through a proportional relief valve, so that the die adapts to the change of the pressure of the die and floats accordingly. This ensures that all parts of multi-step and irregularly shaped structural parts are evenly pressurized, effectively avoiding defects such as cracks and dimensional deviations caused by local overpressure or underpressure, and improving the finished product qualification rate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of some of the components of the present invention; Figure 3 This is a schematic diagram of the frame structure of the present invention; Figure 4 This is a schematic diagram of the external structure of the lower mold assembly of the present invention; Figure 5 This is a schematic diagram of the internal structure of the lower mold assembly of the present invention; Figure 6 This is a schematic diagram of the intelligent pressing component structure of the present invention; Figure 7 This is a schematic diagram of the overall structure of the automatic feeding component of the present invention; Figure 8 This is a partial structural diagram of the automatic feeding component of the present invention; Figure 9 It is a schematic diagram of the spiral feeding structure of the application; Figure 10 It is a schematic diagram of the electric telescopic rod connection relationship structure of the application; Figure 11 It is a schematic diagram of the position relationship structure of the ejection assembly and the recess mold proportional floating assembly of the application; Figure 12 It is a schematic diagram of the ejection assembly structure of the application; Figure 13 It is a schematic diagram of the overall structure of the recess mold proportional floating assembly of the application; Figure 14 It is a schematic diagram of the floating seat structure of the application; Figure 15 It is a schematic diagram of the internal structure of the floating groove of the application; Figure 16 It is a schematic diagram of the partial structure of the recess mold proportional floating assembly of the application; Figure 17 It is a schematic diagram of the position relationship structure of the proportional overflow valve of the application.

[0024] In the figure: 1, frame; 2, bearing platform; 3, lower mold assembly; 4, intelligent pressing assembly; 5, automatic feeding assembly; 6, ejection assembly; 7, recess mold proportional floating assembly; 11, base; 12, side frame; 21, control console; 31, lower mold seat; 32, recess mold; 33, fixed plate; 41, hydraulic cylinder; 42, hydraulic pump; 43, hydraulic pipeline; 44, pressing base; 45, pressing mold; 46, pressure sensor; 47, hydraulic shaft; 51, storage bin; 52, spiral feeding shaft; 53, stepping motor; 54, material conveying cylinder; 55, support; 56, electric telescopic rod; 57, Roots blower; 58, cloth pipe; 59, flat cloth head; 61, air cylinder; 62, bottom plate; 63, top shaft; 64, ejection plate; 71, floating seat; 72, floating limiting shaft; 73, floating spring; 74, hydraulic cavity; 75, floating support shaft; 76, proportional overflow valve; 77, hydraulic oil tank; 78, displacement sensor; 121, cross beam; 122, sliding groove; 13, guide shaft; 411, main hydraulic cylinder; 412, auxiliary hydraulic cylinder; 531, speed reducer; 561, cloth support; 562, pulley; 563, slide; 311, floating groove; 451, sliding plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application. Embodiment one

[0026] Please refer to Figures 1-12 A full-automatic intelligent hydraulic machine, comprising a rack 1, a bearing platform 2 arranged on the rack 1, a lower die assembly 3, an intelligent pressing assembly 4, an automatic feeding assembly 5 and an ejection assembly 6, wherein: The rack 1 comprises a base 11 and side frames 12, the base 11 is fixed on the ground by bolts, and the side frames 12 are symmetrically welded on the base 11, the bearing platform 2 is welded on the top end of the side frames 12, and a control console 21 is arranged on the bearing platform 2.

[0027] The intelligent pressing assembly 4 comprises a hydraulic cylinder 41, a hydraulic pump 42, a hydraulic pipeline 43, a pressing base 44, a pressing die 45, a pressure sensor 46 and a hydraulic shaft 47, the hydraulic cylinder 41 comprises a main hydraulic cylinder 411 and an auxiliary hydraulic cylinder 412, the hydraulic cylinder 41 is connected with the hydraulic pump 42 through the hydraulic pipeline 43, one end of the hydraulic shaft 47 is connected with the hydraulic cylinder 41, and the other end is fixedly connected with the pressing base 44 through bolts.

[0028] The hydraulic pump 42 is arranged on the bearing platform 2 and electrically connected with the control console 21, the pressing die 45 is fixed on the pressing base 44 through bolts, a cross beam 121 is welded between the side frames 12, and the hydraulic cylinder 41 is fixed on the cross beam 121 through bolts.

[0029] The control console 21 controls the hydraulic pump 42 to start, hydraulic oil is delivered to the hydraulic cylinder 41 through the hydraulic pipeline 43, the main hydraulic cylinder 411 and the auxiliary hydraulic cylinder 412 cooperatively drive the hydraulic shaft 47 to press down, drive the pressing base 44 and the pressing die 45 to move downward, the pressure sensor 46 collects the pressing pressure in real time and feeds back to the control console 21, realizes closed-loop feedback, accurate constant-pressure control, and cooperates with mechanical and electrical double positioning to ensure the repeated positioning accuracy of the product.

[0030] Further, the automatic feeding assembly 5 comprises a storage bin 51, a spiral feeding shaft 52, a stepping motor 53, a feeding cylinder 54, a support 55, an electric telescopic rod 56 and a cloth distribution part, the bottom of the storage bin 51 is communicated with the feeding cylinder 54 through a flange, the stepping motor 53 is connected with an input end of a speed reducer 531, and an output end of the speed reducer 531 is connected with the spiral feeding shaft 52.

[0031] Further, the outer side surface of the spiral feeding shaft 52 abuts against the inner wall of the feeding cylinder 54, the storage bin 51 and the electric telescopic rod 56 are fixed on the support 55 through bolts, the speed reducer 531 is fixed on the feeding cylinder 54 through bolts, and the cloth distribution part comprises a Roots blower 57, a cloth distribution pipe 58 and a flat cloth distribution head 59, the air inlet of the Roots blower 57 is connected with the output end of the feeding cylinder 54 through a hose, the air outlet of the Roots blower 57 is connected with the cloth distribution pipe 58 through a hose, and the flat cloth distribution head 59 is provided with a plurality of flat cloth distribution heads which are equidistantly arranged on the bottom of the cloth distribution pipe 58.

[0032] Further, one end of the electric telescopic rod 56 is connected to one side of the cloth frame 561, both ends of the cloth pipe 58 are welded to the cloth frame 561, the Roots blower 57 is fixed on the cloth frame 561 through bolts, the cloth frame 561 is provided with a pulley 562 at both ends of the bottom, the pulley 562 is embedded in the slide 563 and is in sliding fit, the slide 563 is welded on the base 11, and the stepping motor 53 and the electric telescopic rod 56 are electrically connected to the control console 21.

[0033] The setting quantitatively feeds through the spiral feeding shaft 52, uniformly feeds and distributes through the Roots blower 57 and the reciprocating cloth frame 561, completely solves the problems of low efficiency of manual feeding and uneven filling density, guarantees the stability of product performance, and adapts to the demand of large-scale production.

[0034] The powder raw material to be pressed is added to the storage bin 51 of the automatic feeding assembly 5, the powder raw material falls from below the storage bin 51 to the feeding cylinder 54, the equipment is started, the control console 21 sends a command to start the stepping motor 53, the stepping motor 53 is decelerated through the reducer 531 and drives the spiral feeding shaft 52 to rotate close to the inner wall of the feeding cylinder 54, the powder in the storage bin 51 is quantitatively fed to the end of the feeding cylinder 54, the Roots blower 57 is started, the powder at the end of the feeding cylinder 54 is sucked to the cloth pipe 58, and under the action of wind pressure, the powder is uniformly blown to the concave mold cavity through the flat cloth head 59 below the cloth pipe 58, and at the same time, the electric telescopic rod 56 drives the cloth frame 561 to reciprocate along the slide 563 by using the pulley 562, so that the powder is uniformly filled in the mold cavity.

[0035] Further, the lower die assembly 3 includes a lower die seat 31, a concave die 32 and a fixed plate 33, the lower die seat 31 is provided with a floating groove 311, the concave die 32 is embedded in the floating groove 311 and is in sliding fit up and down, the fixed plate 33 is fixed on both sides of the floating groove 311 through bolts and one end extends above the concave die 32, the lower die seat 31 is fixed on the base 11 through bolts, a plurality of pressure sensors 46 are arranged in a matrix at the bottom of the floating groove 311, the top end of the pressure sensor 46 abuts against the bottom surface of the concave die 32, the pressure sensor 46 is electrically connected to the control console 21, and a sliding groove 122 is symmetrically welded on the inner side of the side frame 12, two groups of sliding plates 451 are symmetrically arranged on the outer side of the pressure die 45, the sliding plate 451 is embedded in the sliding groove 122 and is in sliding fit, and the guide shaft 13 is welded between the cross beam 121 and the base 11 and penetrates through the sliding plate 451.

[0036] The concave die 32 is limited by the fixed plate 33 and is prevented from being pushed out during demolding, the sliding plates 451 on the outer side of the pressing base 44 slide along the sliding groove 122 of the side frame 12 and the guide shaft 13, and the centering accuracy of the pressure die 45 and the concave die 32 is guaranteed.

[0037] Further, the ejection assembly 6 comprises a cylinder 61, a bottom plate 62, a top shaft 63 and an ejection plate 64. The bottom end of the cylinder 61 is fixed to the base 11 by bolts, and the top end is fixedly connected to the bottom plate 62. The top shaft 63 is welded to the top surface of the bottom plate 62 at four corners, penetrates the lower die seat 31, and the ejection plate 64 is symmetrically welded to the top shaft 63 and is embedded in the concave die 32 and is in sliding fit.

[0038] When the pressure reaches the set value in the pressure setting mode or the stroke reaches the set value in the stroke setting mode, the system automatically enters the pressure maintaining stage. After the pressure maintaining is completed, the hydraulic cylinder 41 drives the press die 45 to move upward to reset, the console 21 starts the cylinder 61 of the ejection assembly 6, the cylinder 61 drives the bottom plate 62 and the top shaft 63 to move upward, the ejection plate 64 ejects the formed blank from the concave die 32, and one production cycle is completed. Embodiment Two

[0039] Please refer to Figures 13-17 The difference between embodiment two and embodiment one is that the concave die proportional floating assembly 7 is additionally arranged in the floating groove 311. The concave die proportional floating assembly 7 comprises a floating seat 71, a floating limiting shaft 72, a floating spring 73, a hydraulic cavity 74, a floating support shaft 75, a proportional overflow valve 76, a hydraulic oil tank 77 and a displacement sensor 78. The floating seat 71 is embedded in the floating groove 311 and is in sliding fit up and down. The floating limiting shaft 72 is fixed to the bottom of the floating groove 311 by screws and is uniformly arranged along the circumference of the floating seat 71. The top of the floating limiting shaft 72 is embedded in the floating seat 71 and is in sliding fit.

[0040] Further, the floating spring 73 is nested outside the floating limiting shaft 72 and is welded to the floating seat 71 and the bottom end of the floating limiting shaft 72 at both ends respectively. The pressure sensor 46 is fixed to the floating seat 71 by bolts. The top of the floating seat 71 abuts against the concave die 32. The top end of the floating support shaft 75 is fixed to the floating seat 71 by screws.

[0041] Further, the floating support shaft 75 is connected to the hydraulic cavity 74 through a piston. The hydraulic cavity 74 is welded to the base 11. The hydraulic cavity 74 is connected to the proportional overflow valve 76 through an oil pipe. The proportional overflow valve 76 is connected to the hydraulic oil tank 77 through a pipeline. The displacement sensor 78 is fixed to the inside of the floating groove 311 below the floating seat 71 by screws. The displacement sensor 78 and the proportional overflow valve 76 are electrically connected to the console 21.

[0042] When the pressed product is a special-shaped structural part, the parameters such as the concave die floating stroke range and the floating pressure proportional coefficient are set through the console 21, then the equipment is started, the lower mold 45 is lowered to contact the powder and apply pressure, the concave die 32 is driven by the pressure to slide the floating seat 71 along the floating limiting shaft 72 downward, the floating spring 73 is compressed, at the same time, the floating support shaft 75 is lowered in the hydraulic cavity 74, extruding the hydraulic oil in the cavity, the displacement sensor 78 collects the displacement data of the floating seat 71 in real time and feeds back to the console 21, the console 21 adjusts the opening of the proportional overflow valve 76 according to the preset proportional coefficient, controls the return flow speed of the hydraulic oil in the hydraulic cavity 74, and then adjusts the floating resistance of the floating seat 71, so as to dynamically match the floating speed of the concave die 32 and the pressing speed of the upper mold 45 for the multi-step and special-shaped structural part, so that each part of the blank is uniformly pressed, avoiding cracks and size deviation caused by local insufficient pressing or excessive extrusion, and after the pressure holding is completed, the proportional overflow valve 76 is fully opened to release the pressure, and the floating spring 73 drives the floating seat 71 and the concave die 32 to reset.

[0043] The specific use mode and effect of the embodiment are as follows: In use, first, the matched upper mold 45 and concave die 32 are selected according to the production requirements, the upper mold 45 is fixed on the pressing base 44 through bolts, the concave die 32 is embedded into the floating groove 311 of the lower mold seat 31, and the fixed plate 33 is used for limiting to prevent the concave die 32 from being pushed out during demolding, the process parameters of the production powder product are input through the console 21 on the bearing platform 2, including the feeding amount, the pressing force, the pressing stroke, the pressure holding time and the like, and the PLC control system built in the console 21 will store the parameters and link the execution components.

[0044] Then, the powder raw material to be pressed is added to the storage bin 51 of the automatic feeding assembly 5, the powder raw material falls from below the storage bin 51 to the feeding cylinder 54, the equipment is started, the console 21 sends a command to start the stepping motor 53, the stepping motor 53 is decelerated through the speed reducer 531 and drives the screw feeding shaft 52 to rotate close to the inner wall of the feeding cylinder 54, the powder in the storage bin 51 is quantitatively fed to the end of the feeding cylinder 54, the Roots blower 57 is started, the powder at the end of the feeding cylinder 54 is sucked to the distribution pipe 58, and under the action of the air pressure, the powder is uniformly blown to the cavity of the concave die 32 through the flat distribution head 59 below the distribution pipe 58, at the same time, the electric telescopic rod 56 drives the distribution frame 561 to reciprocatingly move along the slide 563 by using the pulley 562, so as to ensure that the powder is uniformly filled in the cavity.

[0045] The setting quantitatively feeds by the screw feeding shaft 52, uniformly distributes by the Roots blower 57 and the reciprocating distribution frame 561, completely solves the problems of low manual feeding efficiency and uneven filling density, guarantees the stability of product performance, and adapts to the scale production requirements.

[0046] Subsequently, the console 21 controls the hydraulic pump 42 to start, and the hydraulic oil is delivered to the hydraulic cylinder 41 through the hydraulic pipeline 43. The main hydraulic cylinder 411 and the auxiliary hydraulic cylinder 412 jointly drive the hydraulic shaft 47 to press down, driving the pressing base 44 and the pressing die 45 to move downward. The slide plate 451 outside the pressing base 44 slides along the sliding groove 122 of the side frame 12 and the guide shaft 13, ensuring the centering accuracy of the pressing die 45 and the concave die 32. The pressure sensor 46 at the bottom of the concave die 32 collects the pressing pressure in real time and feeds back to the console 21. This setting uses the guiding effect of the sliding groove 122 and the guide shaft 13 and the closed-loop feedback of the pressure sensor 46 to realize accurate pressure control, and cooperates with mechanical and electrical double positioning to ensure the repeat positioning accuracy of the product.

[0047] When the pressure reaches the set value in the constant pressure mode or the stroke reaches the set value in the constant stroke mode, the system automatically enters the pressure maintaining stage. After the pressure maintaining is completed, the hydraulic cylinder 41 drives the pressing die 45 to move upward and reset, the console 21 starts the air cylinder 61 of the ejection assembly 6, the air cylinder 61 drives the bottom plate 62 and the top shaft 63 to move upward, the ejection plate 64 ejects the formed blank from the concave die 32, and a production cycle is completed.

[0048] When the pressing product is a special-shaped structural part, the concave die proportional floating assembly 7 is additionally arranged in the floating groove 311, and parameters such as the concave die floating stroke range and the floating pressure proportional coefficient are set through the console 21. Subsequently, the equipment is started, and when the pressing die 45 moves downward to contact the powder and apply pressure, the concave die 32 is driven by the pressure to make the floating seat 71 slide downward along the floating limiting shaft 72. The floating spring 73 is compressed, and at the same time, the floating support shaft 75 moves downward in the hydraulic cavity 74, extruding the hydraulic oil in the cavity. The displacement sensor 78 collects the displacement data of the floating seat 71 in real time and feeds back to the console 21. According to the preset proportional coefficient, the console 21 adjusts the opening of the proportional overflow valve 76, controls the return speed of the hydraulic oil in the hydraulic cavity 74, and then adjusts the floating resistance of the floating seat 71, so as to dynamically match the floating speed of the concave die 32 and the pressing speed of the pressing die 45 for the multi-step and special-shaped structural part, so that each part of the blank is uniformly pressed, and the problems of cracks and size deviation caused by local insufficient pressing or excessive extrusion are avoided.

[0049] This setting dynamically adjusts the floating resistance through the proportional overflow valve 76, so that the concave die 32 self-adapts to the floating with the change of the pressing die 45 pressure, avoids the local overpressure or underpressure defects of the multi-step and special-shaped structural part, improves the qualified rate of finished products, and after the pressure maintaining is completed, the proportional overflow valve 76 is fully opened to release the pressure, and the floating spring 73 drives the floating seat 71 and the concave die 32 to reset.

[0050] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A full-automatic intelligent hydraulic press, comprising a frame (1) and a bearing platform (2) arranged on the frame (1), characterized in that, It also includes lower die assembly (3), intelligent pressing assembly (4), automatic feeding assembly (5) and ejection assembly (6), wherein: The rack (1) comprises a base (11) and side frames (12), the base (11) is fixed on the ground by bolts, the side frames (12) are symmetrically welded on the base (11), and the bearing platform (2) is welded on the top of the side frames (12); a control console (21) is arranged on the bearing platform (2). The intelligent pressing assembly (4) comprises a hydraulic cylinder (41), a hydraulic pump (42), a hydraulic pipeline (43), a pressing base (44), a pressing die (45), a pressure sensor (46) and a hydraulic shaft (47); the hydraulic cylinder (41) comprises a main hydraulic cylinder (411) and an auxiliary hydraulic cylinder (412); the hydraulic cylinder (41) is connected with the hydraulic pump (42) through the hydraulic pipeline (43); one end of the hydraulic shaft (47) is connected with the hydraulic cylinder (41), and the other end is fixedly connected with the pressing base (44) through bolts. The automatic feeding assembly (5) comprises a storage bin (51), a spiral feeding shaft (52), a stepping motor (53), a feeding cylinder (54), a support (55), an electric telescopic rod (56) and a cloth distribution part; the bottom of the storage bin (51) is connected with the feeding cylinder (54) through flanges; the stepping motor (53) is connected with the input end of a speed reducer (531); the output end of the speed reducer (531) is connected with the spiral feeding shaft (52).

2. The fully automatic intelligent hydraulic press according to claim 1, characterized in that: The outer side surface of the spiral feeding shaft (52) abuts against the inner wall of the feeding cylinder (54); the storage bin (51) and the electric telescopic rod (56) are fixed on the support (55) by bolts; the speed reducer (531) is fixed on the feeding cylinder (54) by bolts; the cloth distribution part comprises a Roots blower (57), a cloth distribution pipe (58) and a flat cloth distribution head (59); the air inlet of the Roots blower (57) is connected with the output end of the feeding cylinder (54) through a hose; the air outlet of the Roots blower (57) is connected with the cloth distribution pipe (58) through a hose; the flat cloth distribution head (59) is provided with a plurality of cloth distribution heads which are installed at the bottom of the cloth distribution pipe (58) at equal intervals.

3. The fully automatic intelligent hydraulic press according to claim 2, characterized in that: One end of the electric telescopic rod (56) is connected with one side of a cloth distribution frame (561); the cloth distribution pipe (58) is welded to the cloth distribution frame (561) at both ends; the Roots blower (57) is fixed on the cloth distribution frame (561) by bolts; the cloth distribution frame (561) is provided with pulleys (562) at the bottom of both ends; the pulleys (562) are embedded in a slide way (563) and are in sliding fit; the slide way (563) is welded to the base (11); the stepping motor (53) and the electric telescopic rod (56) are electrically connected with the control console (21).

4. The fully automatic intelligent hydraulic press according to claim 3, characterized in that: The hydraulic pump (42) is arranged on the bearing platform (2) and is electrically connected with the control console (21); the pressing die (45) is fixed on the pressing base (44) by bolts; cross beams (121) are welded between the side frames (12); the hydraulic cylinder (41) is fixed on the cross beams (121) by bolts.

5. The fully automatic intelligent hydraulic press according to claim 1, characterized in that: The lower die assembly (3) comprises a lower die seat (31), a die (32) and a fixed plate (33), the lower die seat (31) is provided with a floating groove (311), the die (32) is embedded in the floating groove (311) and is in sliding fit with the floating groove (311) up and down, and the fixed plate (33) is fixed symmetrically on both sides of the floating groove (311) by bolts and extends to above the die (32) at one end.

6. The fully automatic intelligent hydraulic press according to claim 5, characterized in that: The lower die seat (31) is fixed on the base (11) by bolts, a plurality of pressure sensors (46) are arranged in a matrix at the bottom of the floating groove (311), the top end of the pressure sensor (46) abuts against the bottom surface of the die (32), the pressure sensor (46) is electrically connected to the control console (21), the inner side of the side frame (12) is symmetrically welded with a sliding groove (122), and the outer side of the die (45) is symmetrically provided with two groups of sliding plates (451), the sliding plates (451) are embedded in the sliding groove (122) and are in sliding fit, and the guide shaft (13) is welded between the cross beam (121) and the base (11) and penetrates the sliding plates (451).

7. The fully automatic intelligent hydraulic press according to claim 6, characterized in that: The ejection assembly (6) comprises a cylinder (61), a bottom plate (62), an ejection shaft (63) and an ejection plate (64), the bottom end of the cylinder (61) is fixed on the base (11) by bolts, the top end is fixedly connected with the bottom plate (62), the top surface of the bottom plate (62) is welded with the ejection shaft (63) at four corners, the ejection shaft (63) penetrates the lower die seat (31), and the ejection plate (64) is symmetrically welded on the ejection shaft (63).

8. The fully automatic intelligent hydraulic press according to claim 5, characterized in that: The die proportional floating assembly (7) is additionally arranged in the floating groove (311), the die proportional floating assembly (7) comprises a floating seat (71), a floating limiting shaft (72), a floating spring (73), a hydraulic cavity (74), a floating support shaft (75), a proportional overflow valve (76), a hydraulic oil tank (77) and a displacement sensor (78), the floating seat (71) is embedded in the floating groove (311) and is in sliding fit with the floating groove (311) up and down, the floating limiting shaft (72) is fixed at the bottom of the floating groove (311) by screws and is uniformly arranged along the circumference of the floating seat (71), and the top of the floating limiting shaft (72) is embedded in the floating seat (71) and is in sliding fit.

9. The fully automatic intelligent hydraulic press according to claim 8, characterized in that: The floating spring (73) is nested outside the floating limiting shaft (72) and is welded at both ends of the floating seat (71) and the bottom end of the floating limiting shaft (72) respectively, the pressure sensor (46) is fixed on the floating seat (71) by bolts, the top of the floating seat (71) abuts against the die (32), and the bottom of the floating seat (71) is fixed with the top end of the floating support shaft (75) by screws.

10. The fully automatic intelligent hydraulic press according to claim 9, characterized in that: The floating support shaft (75) is connected with a hydraulic cavity (74) through a piston, the hydraulic cavity (74) is welded on the base (11), the hydraulic cavity (74) is connected with a proportional overflow valve (76) through an oil pipe, the proportional overflow valve (76) is connected with a hydraulic oil tank (77) through a pipeline, a displacement sensor (78) is fixed in the inside of a floating groove (311) and below the floating seat (71) through a screw, and the displacement sensor (78) and the proportional overflow valve (76) are electrically connected with a control console (21).

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