CN111618295B - Positive displacement weighing and distributing device and distributing method thereof - Google Patents
Positive displacement weighing and distributing device and distributing method thereof Download PDFInfo
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- CN111618295B CN111618295B CN202010497738.9A CN202010497738A CN111618295B CN 111618295 B CN111618295 B CN 111618295B CN 202010497738 A CN202010497738 A CN 202010497738A CN 111618295 B CN111618295 B CN 111618295B
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- weighing hopper
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- ejector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/004—Filling molds with powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
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Abstract
A volumetric weighing and distributing device and a distributing method thereof belong to the technical field of powder metallurgy, a distributing mechanism is arranged on a working platform, a dry pressing forming die is arranged below the distributing mechanism, a weighing device is arranged above the distributing mechanism, a feeding vibration disc is arranged above the weighing device, and an ejection mechanism is arranged on the lower surface of the working platform and is positioned below the distributing mechanism; the weighing device comprises a thumb cylinder, a weighing hopper, a weight sensor, a cantilever beam, an upright post, a weighing hopper door and an ejector rod, the material distribution mechanism comprises a material distribution hopper, a material distribution motor, a crank, a sliding block and a material distribution guide rail, and the ejection mechanism comprises a shell, a lifting stepping sliding table, a protruding block, an ejection reset spring, a connecting plate, a clamping jaw, a ball screw, a sliding base and an ejection plate. According to the invention, the powder materials with different densities are measured in two aspects of weight and volume, so that the weight of the powder material filled in the distributing device is accurate, a guarantee is provided for subsequent powder sintering, and the quality of a finished product is effectively improved.
Description
Technical Field
The invention belongs to the technical field of powder metallurgy, and particularly relates to a positive displacement weighing and distributing device and a distributing method thereof.
Background
Powder metallurgy is a process technology for manufacturing metal materials, composite materials and various products by taking metal powder (or a mixture of metal powder and nonmetal powder) as a raw material and performing press forming and sintering. The powder metallurgy method has similar places to the production of ceramics and belongs to the powder sintering technology, so a series of new powder metallurgy technologies can also be used for preparing ceramic materials. Due to the advantages of the powder metallurgy technology, the powder metallurgy technology becomes a key for solving the problem of new materials, and plays a significant role in the development of the new materials.
Before powder is pressed and formed, powder materials are often required to be uniformly arranged in a forming die, and in the prior art, even if the weight of the powder materials meets a preset value due to different densities of the powder materials, a die cavity is not filled with the powder materials actually, so that the content of the raw materials in a finished product is less than a set value, and the quality of the sintered finished product is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a volumetric weighing and distributing device and a distributing method thereof, wherein powder materials are uniformly distributed in a forming die.
The invention is realized by the following technical scheme.
The utility model provides a positive displacement distributing device that weighs, includes weighing device, cloth mechanism, pay-off vibration dish, work platform, ejection mechanism and dry pressing forming die, wherein: the material distributing mechanism is arranged on the working platform, the dry pressing forming die is arranged below the material distributing mechanism, the weighing device is arranged above the material distributing mechanism, the feeding vibration disc is arranged above the weighing device, and the ejection mechanism is arranged on the lower surface of the working platform and is positioned below the material distributing mechanism;
the dry pressing forming die comprises a die base, a die cover body and a die frame, wherein the die base and the die cover body are arranged in the die frame, a plurality of semi-cylindrical forming cavities are arranged on the die base in parallel along the width direction of the die base, a plurality of semi-cylindrical forming cavities are also arranged on the die cover body in parallel along the width direction of the die cover body, the semi-cylindrical forming cavities arranged on the die base and the semi-cylindrical forming cavities arranged on the die cover body are symmetrically arranged around a die opening surface, and a dovetail groove is formed in the lower surface of the die base;
the weighing device comprises a thumb cylinder, a weighing hopper, a weight sensor, a cantilever beam, an upright post, a weighing hopper bin gate and an ejector rod, wherein the upright post is vertically and upwards arranged above the working platform; the top rod comprises a first horizontal part, a second horizontal part and a connecting rod for connecting the first horizontal part and the second horizontal part, the axis direction of the first horizontal part is perpendicular to the axis direction of the connecting rod, the axis direction of the second horizontal part is perpendicular to the axis direction of the connecting rod, the axis direction of the first horizontal part is parallel to the different surface of the axis direction of the second horizontal part, the first horizontal part penetrates through the sliding groove and extends to the lower part of the thumb cylinder, the second horizontal part is in contact with the weighing hopper bin gate, the piston rod of the thumb cylinder drives the first horizontal part to move along the sliding groove, so that the second horizontal part drives the weighing hopper bin gate to rotate around the hinged position, and the weighing hopper bin gate is opened or closed;
the material distribution mechanism comprises a material distribution hopper, a material distribution motor, a crank, a sliding block and a material distribution guide rail, the material distribution guide rail is arranged below the weighing hopper, the material distribution hopper is arranged on the sliding block, a power input end of the crank is hinged with a rotor of the material distribution motor, a power output end of the crank is hinged with the sliding block, the material distribution motor drives the sliding block to drive the material distribution hopper to reciprocate along the material distribution guide rail through the crank-sliding block mechanism, and powder in the material distribution hopper evenly falls above the mold base;
the ejection mechanism comprises a shell, a lifting stepping sliding table, a limiting jackscrew, a bump, an ejection reset spring, a connecting plate, a clamping jaw, a ball screw, a sliding base and an ejection plate, wherein the limiting jackscrew comprises an upper limiting jackscrew and a lower limiting jackscrew; the lifting stepping sliding table is vertically and upwards arranged at the bottom of the shell, and a ball screw is vertically and upwards arranged above an output shaft of the lifting stepping sliding table; the back side surface of the connecting plate is provided with a sliding block, a sliding rail is arranged on the inner wall of the shell corresponding to the position of the sliding block, the ejection plates are oppositely arranged on the left side and the right side of the connecting plate, the side wall of the ejection plate close to one side of the lifting stepping sliding table is provided with an ear seat, a screw nut is installed on the ear seat and matched with a ball screw, the lifting stepping sliding table drives the ejection plate to drive the sliding block on the connecting plate to reciprocate along the sliding rail through a ball screw transmission mechanism, the inner wall of the ejection plate is provided with a guide block, and the upper end part of the ejection plate is relatively provided with a guide block with a downward opening direction; the sliding base is arranged between the ejector plates on the two sides and is positioned above the connecting plate, the plane where the sliding base is positioned, the plane where the ejector plates are positioned and the plane where the connecting plate is positioned are vertical in pairs, a rotating shaft is arranged on the front side surface of the sliding base, the clamping jaws are oppositely arranged on the two sides of the upper surface of the sliding base and are attached to the inner walls of the ejector plates, and guide grooves are formed in the positions, corresponding to the positions of the guide blocks, of the clamping jaws; the upper end of the swing rod is mounted on the rotating shaft, the convex block is arranged on the inner wall of the shell below the swing rod, the lower end of the swing rod is hinged to the eccentric position of the convex block, the upper end of the ejection reset spring is fixedly connected with the upper edge of the connecting plate, the lower end of the ejection reset spring is fixedly connected with the left side edge of the convex block at the vertical projection position, the lower limiting jackscrew is arranged on the inner wall of the shell below the position where the convex block rotates last, and the upper limiting jackscrew is arranged on the inner wall of the shell above the position where the convex block is connected with the ejection reset spring; when the lifting stepping sliding table drives the ejector plate to drive the connecting plate to move upwards to an upper stroke end position along the sliding rail, the ejector plate ejects the mold base upwards, the ejector return spring drives the protruding block to rotate to be clamped at an upper limit ejector screw position, the protruding block drives the sliding base to drive the clamping jaw to move upwards along the guide block through the oscillating bar, the clamping jaw extends upwards to the upper part of the ejector plate, the clamping jaw extends into a dovetail groove formed in the lower surface of the mold base after the action of the guide block, and the clamping jaw tightly clamps the mold base; when the lifting stepping sliding table drives the ejector plate to drive the connecting plate to move downwards to a lower stroke end position along the sliding rail, the ejector return spring drives the lug to rotate to a lower limiting jackscrew position, the ejector return spring recovers natural length, the lug drives the sliding base through the swing rod to drive the clamping jaw to move downwards along the guide block, the sliding base is recovered to the upper portion of the connecting plate, the clamping jaw is separated from the dovetail groove, and the ejector plate drives the die base to fall into the bottom of the die frame again.
Further, when the weight sensor detects that the weight of the powder raw material in the weighing hopper does not reach a preset value, the piston rod of the thumb cylinder is retracted, the ejector rod is in a free state, the door of the weighing hopper is turned upwards under the action of the reset spring, and the door of the weighing hopper is closed; when the ejection mechanism drives the mold base to move upwards to a preset position, the volume of a cavity defined by the upper surface of the mold base and the upper surface of the mold frame reaches a preset value, and when the weight sensor detects that the weight of the powder raw materials in the weighing hopper reaches the preset value, the piston rod of the thumb cylinder extends downwards, the thumb cylinder drives the weighing hopper bin gate to rotate around the hinged position through the ejector rod, so that the weighing hopper bin gate is driven to turn downwards, and the weighing hopper bin gate is opened.
A material distributing method of a volumetric weighing and material distributing device comprises the following steps:
s1, weighing: powder materials are added into the storage bin in advance, a bin door of the storage bin is opened, a weighing hopper bin door is closed, the powder in the storage bin falls into a weighing hopper through a feeding vibration disc, a weight sensor detects that the weight of the powder raw materials in the weighing hopper does not reach a preset value, a piston rod of a thumb cylinder is retracted, an ejector rod is in a free state, the weighing hopper bin door is turned upwards under the action of a reset spring, and the weighing hopper bin door is closed until the weight sensor detects that the weight of the powder materials in the weighing hopper reaches the preset value;
s2, constant volume: when the lifting stepping sliding table drives the ejector plate to drive the connecting plate to move upwards to an upper stroke end position along the sliding rail, the ejector plate ejects the mold base upwards, the ejector return spring drives the protruding block to rotate to be clamped at an upper limit ejector screw position, the protruding block drives the sliding base through the oscillating bar to drive the clamping jaw to move upwards along the guide block, the clamping jaw extends upwards out of the ejector plate, the clamping jaw extends into a dovetail groove formed in the lower surface of the mold base under the action of the guide block, the clamping jaw tightly grips the mold base, and the volume of a cavity defined by the upper surface of the mold base and the upper surface of the mold frame reaches a preset value;
s3, distributing: a piston rod of the thumb cylinder extends downwards, the thumb cylinder drives the weighing hopper bin gate to rotate around a hinged position through the ejector rod, so that the weighing hopper bin gate is driven to turn downwards, the weighing hopper bin gate is opened, powder in the material distribution hopper smoothly and uniformly falls into a mold base in the process that the material distribution hopper slides along the material distribution guide rail in a reciprocating mode, and the semi-cylindrical forming cavity is filled with powder materials;
s4, mold falling: when the lifting stepping sliding table drives the ejector plate to drive the connecting plate to move downwards along the sliding rail to the lower stroke end position, the push-out reset spring drives the lug to rotate to the lower limiting jackscrew position, the push-out reset spring recovers the natural length, the lug drives the sliding base through the swing rod to drive the clamping jaw to move downwards along the guide block, the sliding base recovers to the upper side of the connecting plate, the clamping jaw is separated from the dovetail groove, the ejector plate drives the die base to fall into the bottom of the die frame again, and the volumetric weighing and distributing of powder materials are completed.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the powder materials with different densities are measured in two aspects of weight and volume, so that the weight of the powder materials filled in the distributing device is accurate, a guarantee is provided for subsequent powder sintering, and the quality of a finished product is effectively improved.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a perspective view of the ejection mechanism;
FIG. 3 is a schematic view of the assembly structure of the clamping jaws and the ejector plate;
FIG. 4 is a schematic cross-sectional view of a weighing hopper with the door of the weighing hopper in a closed position;
FIG. 5 is a schematic cross-sectional view of a weighing hopper with the door of the weighing hopper in an open position;
fig. 6 is a schematic perspective view of the lift pin.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A volumetric weighing and distributing device as shown in fig. 1 to 6, comprising a weighing device 1, a distributing mechanism 2, a feeding vibration disc 3, a working platform 4, an ejection mechanism 5 and a dry pressing forming die, wherein: the material distribution mechanism 2 is arranged on the working platform 4, the dry pressing forming die is arranged below the material distribution mechanism 2, the weighing device 1 is arranged above the material distribution mechanism 2, the feeding vibration disc 3 is arranged above the weighing device 1, and the ejection mechanism 5 is arranged on the lower surface of the working platform 4 and is positioned below the material distribution mechanism 2;
the dry pressing forming die comprises a die base 61, a die cover body and a die frame 65, wherein the die base 61 and the die cover body are arranged in the die frame 65, a plurality of semi-cylindrical forming cavities 63 are arranged on the die base 61 in parallel along the width direction of the die base 61, a plurality of semi-cylindrical forming cavities 63 are also arranged on the die cover body in parallel along the width direction of the die cover body, the semi-cylindrical forming cavities 63 arranged on the die base 61 and the semi-cylindrical forming cavities 63 arranged on the die cover body are symmetrically arranged relative to a die opening surface, and a dovetail groove is arranged on the lower surface of the die base 61;
the weighing device 1 comprises a thumb cylinder 11, a weighing hopper 12, a weight sensor 13, a cantilever beam 14, an upright post 15, a weighing hopper door 16 and an ejector rod 17, wherein the upright post 15 is vertically and upwards arranged above the working platform 4, one end of the cantilever beam 14 is fixedly arranged above the upright post 15, the weighing hopper 12 is fixedly arranged on the outer end part of the cantilever beam 14, the weight sensor 13 for detecting the weight of powder raw materials in the weighing hopper 12 is arranged on the outer end part of the cantilever beam 14, the thumb cylinder 11 is vertically and downwards arranged on the rear side wall of the cantilever beam 14, the bottom of the weighing hopper 12 is relatively provided with the weighing hopper door 16, a reset spring 18 is arranged between the weighing hopper door 16 and the inner wall of the weighing hopper 12, and a sliding chute 19 is arranged on the side wall of the weighing hopper 12 along the vertical direction; the top rod 17 comprises a first horizontal part 173, a second horizontal part 171 and a connecting rod 172 connecting the first horizontal part 173 and the second horizontal part 171, the axial direction of the first horizontal part 173 and the axial direction of the connecting rod 172 are perpendicular to each other, the axial direction of the second horizontal part 171 and the axial direction of the connecting rod 172 are perpendicular to each other, the axial direction of the first horizontal part 173 and the axial direction of the second horizontal part 171 are in different planes and parallel, the first horizontal part 173 penetrates through the sliding groove 19 and extends to the lower part of the thumb cylinder 11, the second horizontal part 171 is in contact with the weighing hopper door 16, and a piston rod of the thumb cylinder 11 drives the first horizontal part 173 to move along the sliding groove 19, so that the second horizontal part 171 drives the weighing hopper door 16 to rotate around a hinged position, and the weighing hopper door 16 is opened or closed;
the material distribution mechanism 2 comprises a material distribution hopper 21, a material distribution motor 22, a crank 23, a slider 24 and a material distribution guide rail 25, the material distribution guide rail 25 is installed below the weighing hopper 12, the material distribution hopper 21 is installed on the slider 24, the power input end of the crank 23 is hinged with a rotor of the material distribution motor 22, the power output end of the crank 23 is hinged with the slider 24, the material distribution motor 22 drives the slider 24 through a crank slider mechanism to drive the material distribution hopper 21 to reciprocate along the material distribution guide rail 25, and powder in the material distribution hopper 21 falls above the mold base 61 evenly and uniformly;
the ejection mechanism 5 comprises a shell 51, a lifting stepping sliding table 52, a limiting jackscrew, a convex block 53, an ejection reset spring 54, a connecting plate 55, a clamping jaw 56, a ball screw 57, a sliding base 58 and an ejection plate 512, wherein the limiting jackscrew comprises an upper limiting jackscrew 511 and a lower limiting jackscrew 510; the lifting stepping sliding table 52 is vertically and upwardly arranged at the bottom of the shell 51, and a ball screw 57 is vertically and upwardly arranged above an output shaft of the lifting stepping sliding table 52; a sliding block is arranged on the rear side face of the connecting plate 55, a sliding rail is arranged on the inner wall of the shell 51 corresponding to the sliding block, the ejector plates 512 are oppositely arranged on the left side and the right side of the connecting plate 55, an ear seat is arranged on the side wall of the ejector plate 512 close to one side of the lifting stepping sliding table 52, a screw nut is arranged on the ear seat and matched with the ball screw 57, the lifting stepping sliding table 52 drives the ejector plate 512 to drive the sliding block on the connecting plate 55 to reciprocate along the sliding rail through a ball screw transmission mechanism, a guide block is arranged on the inner wall of the ejector plate 512, and a guide block with a downward opening direction is correspondingly arranged at the upper end of the ejector plate 512; the sliding base 58 is arranged between the ejector plates 512 on the two sides and is positioned above the connecting plate 55, the plane of the sliding base 58, the plane of the ejector plates 512 and the plane of the connecting plate 55 are pairwise perpendicular, a rotating shaft is arranged on the front side surface of the sliding base 58, the clamping jaws 56 are oppositely arranged on the two sides of the upper surface of the sliding base 58 and attached to the inner wall of the ejector plates 512, and guide grooves are arranged on the clamping jaws 56 corresponding to the positions of the guide blocks; the upper end of the swing rod 59 is mounted on the rotating shaft, the bump 53 is arranged on the inner wall of the shell 51 below the swing rod 59, the lower end of the swing rod 59 is hinged at the eccentric position of the bump 53, the upper end of the ejection return spring 54 is fixedly connected with the upper edge of the connecting plate 55, the lower end of the ejection return spring 54 is fixedly connected with the left edge of the bump 53 at the vertical projection position, the lower limiting jackscrew 510 is arranged on the inner wall of the shell 51 below the position where the bump 53 rotates last, and the upper limiting jackscrew 511 is arranged on the inner wall of the shell 51 above the connecting position of the bump 53 and the ejection return spring 54; when the lifting stepping sliding table 52 drives the ejector plate 512 to drive the connecting plate to move upwards to an up-stroke end position along the sliding rail, the ejector plate 512 ejects the mold base 61 upwards, the ejection return spring 54 drives the projection 53 to rotate to the position of the upper limit jackscrew 511 to be clamped, the projection 53 drives the sliding base 58 to drive the jaw to move upwards along the guide block through the swing rod 59, the jaw extends upwards out of the ejector plate 512, the jaw 56 extends into a dovetail groove formed in the lower surface of the mold base 61 under the action of the guide block, and the jaw 56 tightly clamps the mold base 61; when the lifting stepping sliding table 52 drives the ejector plate 512 to drive the connecting plate to move downwards to a lower stroke end position along the sliding rail, the ejector return spring 54 drives the projection 53 to rotate to the lower limiting jackscrew 510 position, the ejector return spring 54 restores the natural length, the projection 53 drives the sliding base 58 through the swing rod 59 to drive the clamping jaw 56 to move downwards along the guide block, the sliding base 58 is restored to the upper side of the connecting plate 55, the clamping jaw 56 is separated from the dovetail groove, and the ejector plate 512 drives the die base 61 to fall into the bottom of the die frame 65 again.
Further, when the weight sensor 13 detects that the weight of the powder raw material in the weighing hopper 12 does not reach a preset value, the piston rod of the thumb cylinder 11 is retracted, the ejector rod 17 is in a free state, the weighing hopper door 16 is turned upwards under the action of the return spring 18, and the weighing hopper door 16 is closed; when the ejection mechanism 5 drives the mold base 61 to move upwards to a preset position, the volume of a cavity formed by the upper surface of the mold base 61 and the upper surface of the mold frame 65 reaches a preset value, and when the weight sensor 13 detects that the weight of the powder raw material in the weighing hopper 12 reaches a preset value, the piston rod of the thumb cylinder 11 extends downwards, the thumb cylinder 11 drives the weighing hopper bin gate 16 to rotate around the hinged position through the ejector rod 17, so that the weighing hopper bin gate 16 is driven to turn downwards, and the weighing hopper bin gate 16 is opened.
A material distributing method of a volumetric weighing and material distributing device comprises the following steps:
s1, weighing: powder materials are added into the storage bin in advance, a bin gate of the storage bin is opened, a weighing hopper bin gate 16 is closed, the powder in the storage bin falls into a weighing hopper 12 through a feeding vibration disc 3, a weight sensor 13 detects that the weight of the powder raw materials in the weighing hopper 12 does not reach a preset value, a piston rod of a thumb cylinder 11 is retracted, an ejector rod 17 is in a free state, the weighing hopper bin gate 16 is turned upwards under the action of a return spring 18, and the weighing hopper bin gate 16 is closed until the weight sensor 13 detects that the weight of the powder materials in the weighing hopper 12 reaches the preset value;
s2, constant volume: when the lifting stepping sliding table 52 drives the ejector plate 512 to drive the connecting plate to move upwards to the final stroke position along the sliding rail, the ejector plate 512 ejects the mold base 61 upwards, the ejection return spring 54 drives the lug 53 to rotate to be clamped at the position of the upper limit jackscrew 511, the lug 53 drives the sliding base 58 to drive the jaw to move upwards along the guide block through the swing rod 59, the jaw extends upwards out of the ejector plate 512, the jaw 56 extends into a dovetail groove formed in the lower surface of the mold base 61 under the action of the guide block, the jaw 56 tightly grasps the mold base 61, and the volume of a cavity defined by the upper surface of the mold base 61 and the upper surface of the mold frame 65 reaches a preset value;
s3, distributing: a piston rod of the thumb cylinder 11 extends downwards, the thumb cylinder 11 drives the weighing hopper bin gate 16 to rotate around a hinged position through the ejector rod 17, so that the weighing hopper bin gate 16 is driven to turn downwards, the weighing hopper bin gate 16 is opened, powder in the distributing hopper 21 smoothly and uniformly falls into the mold base 61 in the process that the distributing hopper 21 slides along the distributing guide rail 25 in a reciprocating mode, and the semi-cylindrical molding cavity 63 is filled with the powder material;
s4, mold falling: when the lifting stepping sliding table 52 drives the ejector plate 512 to drive the connecting plate to move downwards along the sliding rail to the final lower stroke position, the ejector return spring 54 drives the projection 53 to rotate to the position of the lower limiting jackscrew 510, the ejector return spring 54 restores the natural length, the projection 53 drives the sliding base 58 through the swing rod 59 to drive the clamping jaw 56 to move downwards along the guide block, the sliding base 58 is restored to the upper part of the connecting plate 55, the clamping jaw 56 is separated from the dovetail groove, the ejector plate 512 drives the mould base 61 to fall into the bottom of the mould frame 65 again, and the volumetric weighing and distributing of the powder materials are completed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (3)
1. The utility model provides a positive displacement distributing device that weighs, includes weighing device (1), cloth mechanism (2), pay-off vibration dish (3), work platform (4), ejection mechanism (5) and dry compression moulding mould, its characterized in that: the material distribution mechanism (2) is arranged on the working platform (4), the dry pressing forming die is arranged below the material distribution mechanism (2), the weighing device (1) is arranged above the material distribution mechanism (2), the feeding vibration disc (3) is arranged above the weighing device (1), and the ejection mechanism (5) is arranged on the lower surface of the working platform (4) and is positioned below the material distribution mechanism (2);
the dry pressing forming die comprises a die base (61), a die cover body and a die frame (65), wherein the die base (61) and the die cover body are arranged in the die frame (65), a plurality of semi-cylindrical forming cavities (63) are arranged on the die base (61) in parallel along the width direction of the die base (61), a plurality of semi-cylindrical forming cavities (63) are also arranged on the die cover body in parallel along the width direction of the die cover body, the semi-cylindrical forming cavities (63) arranged on the die base (61) and the semi-cylindrical forming cavities (63) arranged on the die cover body are symmetrically arranged relative to a die opening surface, and a dovetail groove is arranged on the lower surface of the die base (61);
the weighing device (1) comprises a thumb cylinder (11), a weighing hopper (12), a weight sensor (13), a cantilever beam (14), an upright post (15), a weighing hopper bin gate (16) and an ejector rod (17), wherein the upright post (15) is vertically and upwardly arranged above the working platform (4), one end of the cantilever beam (14) is fixedly arranged above the upright post (15), the weighing hopper (12) is fixedly arranged on the outer end part of the cantilever beam (14), the outer end part of the cantilever beam (14) is provided with the weight sensor (13) for detecting the weight of powder raw materials in the weighing hopper (12), the thumb cylinder (11) is vertically and downwardly arranged on the rear side wall of the cantilever beam (14), the bottom of the weighing hopper (12) is relatively provided with the weighing hopper bin gate (16), a reset spring (18) is arranged between the weighing hopper bin gate (16) and the inner wall of the weighing hopper (12), and a sliding chute (19) is arranged on the side wall of the weighing hopper (12) along the vertical direction; the jacking rod (17) comprises a first horizontal part (173), a second horizontal part (171) and a connecting rod (172) connecting the first horizontal part (173) and the second horizontal part (171), the axial direction of the first horizontal part (173) is perpendicular to the axial direction of the connecting rod (172), the axial direction of the second horizontal part (171) is perpendicular to the axial direction of the connecting rod (172), the axial direction of the first horizontal part (173) is parallel to the axial direction of the second horizontal part (171), the first horizontal part (173) penetrates through the sliding groove (19) and extends to the position below the thumb cylinder (11), the second horizontal part (171) is in contact with the weighing hopper door (16), and a piston rod of the thumb cylinder (11) drives the first horizontal part (173) to move along the sliding groove (19), so that the second horizontal part (171) drives the weighing hopper door (16) to rotate around a hinge position, and the weighing hopper door (16) is opened or closed;
the distributing mechanism (2) comprises a distributing hopper (21), a distributing motor (22), a crank (23), a slider (24) and a distributing guide rail (25), the distributing guide rail (25) is installed below the weighing hopper (12), the distributing hopper (21) is installed on the slider (24), the power input end of the crank (23) is hinged with a rotor of the distributing motor (22), the power output end of the crank (23) is hinged with the slider (24), the distributing motor (22) drives the slider (24) through a crank slider mechanism to drive the distributing hopper (21) to reciprocate along the distributing guide rail (25), and powder in the distributing hopper (21) falls into the upper part of the mold base (61) smoothly and uniformly;
the ejection mechanism (5) comprises a shell (51), a lifting stepping sliding table (52), a limiting jackscrew, a bump (53), an ejection return spring (54), a connecting plate (55), a clamping jaw (56), a ball screw (57), a sliding base (58) and an ejection plate (512), wherein the limiting jackscrew comprises an upper limiting jackscrew (511) and a lower limiting jackscrew (510); the lifting stepping sliding table (52) is vertically and upwards arranged at the bottom of the shell (51), and a ball screw (57) is vertically and upwards arranged above an output shaft of the lifting stepping sliding table (52); a sliding block is arranged on the rear side face of the connecting plate (55), a sliding rail is arranged on the inner wall of the shell (51) and corresponds to the sliding block, the ejection plates (512) are arranged on the left side and the right side of the connecting plate (55) relatively, an ear seat is arranged on the side wall of the ejection plate (512) close to one side of the lifting stepping sliding table (52), a screw nut is mounted on the ear seat and matched with a ball screw (57), the lifting stepping sliding table (52) drives the ejection plate (512) to drive the sliding block on the connecting plate (55) to reciprocate along the sliding rail through a ball screw transmission mechanism, a guide block is arranged on the inner wall of the ejection plate (512), and a guide block with a downward opening direction is arranged at the upper end part of the ejection plate (512); the sliding base (58) is arranged between the ejector plates (512) on the two sides and is positioned above the connecting plate (55), the plane of the sliding base (58) and the plane of the ejector plates (512) are perpendicular to the plane of the connecting plate (55) in pairs, a rotating shaft is arranged on the front side surface of the sliding base (58), the clamping jaws (56) are oppositely arranged on the two sides of the upper surface of the sliding base (58) and are attached to the inner wall of the ejector plates (512), and guide grooves are formed in the positions, corresponding to the positions of the guide blocks, of the clamping jaws (56); the upper end of a swing rod (59) is mounted on a rotating shaft, a bump (53) is arranged on the inner wall of a shell (51) below the swing rod (59), the lower end of the swing rod (59) is hinged to the eccentric position of the bump (53), the upper end of a push-out reset spring (54) is fixedly connected with the upper edge of a connecting plate (55), the lower end of the push-out reset spring (54) is fixedly connected with the left edge of the bump (53) at the vertical projection position, a lower limiting jackscrew (510) is arranged on the inner wall of the shell (51) below the rotation end position of the bump (53), and an upper limiting jackscrew (511) is arranged on the inner wall of the shell (51) above the connecting position of the bump (53) and the push-out reset spring (54); when the lifting stepping sliding table (52) drives the ejector plate (512) to drive the connecting plate to move upwards to an upper stroke end position along the sliding rail, the ejector plate (512) ejects the mold base (61) upwards, the ejector return spring (54) drives the lug (53) to rotate to the upper limit jackscrew (511) position to be clamped, the lug (53) drives the sliding base (58) through the swing rod (59) to drive the clamping jaw to move upwards along the guide block, the clamping jaw extends upwards out of the ejector plate (512), the clamping jaw (56) extends into a dovetail groove formed in the lower surface of the mold base (61) under the action of the guide block, and the clamping jaw (56) tightly clamps the mold base (61); when the lifting stepping sliding table (52) drives the ejector plate (512) to drive the connecting plate to move downwards to a lower stroke end position along the sliding rail, the ejector return spring (54) drives the lug (53) to rotate to a lower limiting jackscrew (510) position, the ejector return spring (54) restores to a natural length, the lug (53) drives the sliding base (58) through the swing rod (59) to drive the clamping jaw (56) to move downwards along the guide block, the sliding base (58) is recovered to the upper side of the connecting plate (55), the clamping jaw (56) is separated from the dovetail groove, and the ejector plate (512) drives the die base (61) to fall into the bottom of the die frame (65) again.
2. A positive displacement weighing and distributing device as claimed in claim 1, wherein: when the weight sensor (13) detects that the weight of the powder raw materials in the weighing hopper (12) does not reach a preset value, the piston rod of the thumb cylinder (11) is retracted, the ejector rod (17) is in a free state, the weighing hopper door (16) is turned upwards under the action of the return spring (18), and the weighing hopper door (16) is closed; when ejection mechanism (5) drive mould base (61) upward movement to preset position department, the volume of the cavity that the upper surface of mould base (61) and the upper surface of mould frame (65) enclose reaches the predetermined value, and when weight sensor (13) detected powder raw materials weight in weighing hopper (12) and reached the default, the piston rod of thumb cylinder (11) stretched out downwards, thumb cylinder (11) drive hopper door (16) of weighing through ejector pin (17) are rotatory around articulated position, thereby drive hopper door (16) of weighing and overturn downwards, hopper door (16) of weighing are opened.
3. The material distributing method of the volumetric weighing and material distributing device according to claim 1, characterized by comprising the following steps:
s1, weighing: powder materials are added into a storage bin in advance, a bin gate of the storage bin is opened, a weighing hopper bin gate (16) is closed, powder in the storage bin falls into a weighing hopper (12) through a feeding vibration disc (3), a weight sensor (13) detects that the weight of the powder raw materials in the weighing hopper (12) does not reach a preset value, a piston rod of a thumb cylinder (11) is retracted, an ejector rod (17) is in a free state, the weighing hopper bin gate (16) is turned upwards under the action of a return spring (18), and the weighing hopper bin gate (16) is closed until the weight sensor (13) detects that the weight of the powder materials in the weighing hopper (12) reaches the preset value;
s2, constant volume: when the lifting stepping sliding table (52) drives the ejector plate (512) to drive the connecting plate to move upwards to an upper stroke end position along the sliding rail, the ejector plate (512) ejects the die base (61) upwards, meanwhile, the ejection reset spring (54) drives the lug (53) to rotate to be clamped at the position of the upper limit jackscrew (511), the lug (53) drives the sliding base (58) to drive the clamping jaw to move upwards along the guide block through the swing rod (59), the clamping jaw extends upwards out of the ejector plate (512), the clamping jaw (56) extends into a dovetail groove formed in the lower surface of the die base (61) under the action of the guide block, the clamping jaw (56) tightly grasps the die base (61), and the volume of a cavity formed by the upper surface of the die base (61) and the upper surface of the die frame (65) reaches a preset value;
s3, distributing: a piston rod of the thumb cylinder (11) extends downwards, the thumb cylinder (11) drives the weighing hopper bin gate (16) to rotate around a hinged position through the ejector rod (17), so that the weighing hopper bin gate (16) is driven to turn downwards, the weighing hopper bin gate (16) is opened, powder in the material distribution hopper (21) smoothly and uniformly falls into the mold base (61) in the reciprocating sliding process of the material distribution hopper (21) along the material distribution guide rail (25), and the semi-cylindrical forming cavity (63) is filled with powder materials;
s4, mold falling: when the lifting stepping sliding table (52) drives the ejector plate (512) to drive the connecting plate to move downwards to a lower stroke end position along the sliding rail, the ejector return spring (54) drives the lug (53) to rotate to a lower limiting jackscrew (510) position, the ejector return spring (54) restores to a natural length, the lug (53) drives the sliding base (58) through the swing rod (59) to drive the clamping jaw (56) to move downwards along the guide block, the sliding base (58) is recovered to the upper part of the connecting plate (55), the clamping jaw (56) is separated from the dovetail groove, the ejector plate (512) drives the die base (61) to fall into the bottom of the die frame (65) again, and volumetric weighing and distributing of powder materials are completed.
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| CN112078996B (en) * | 2020-09-11 | 2022-07-01 | 广东智源机器人科技有限公司 | Quantitative material output device |
| CN112113646A (en) * | 2020-09-23 | 2020-12-22 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | Powder weighing apparatus and powder weighing method |
| CN112985874B (en) * | 2021-02-05 | 2022-10-18 | 保康丰源肥业有限责任公司 | Fertilizer dryness fraction circulation selective examination device |
| CN114559582A (en) * | 2022-03-10 | 2022-05-31 | 武汉旭力保温材料有限公司 | Environment-friendly recycling system for leftover materials of heat-insulating boards |
| CN116851749A (en) * | 2023-07-11 | 2023-10-10 | 安徽和丰硬质合金有限公司 | Hard alloy powder forging and pressing processing equipment |
| CN118166349B (en) * | 2024-03-08 | 2024-09-27 | 浙江星楷科技有限公司 | Film forming device for power battery powder |
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| CN106113569B (en) * | 2016-08-18 | 2018-05-08 | 桂林电子科技大学 | A kind of quantitative drawing-in device of rare-earth magnetic compacting automatic production line |
| CN206011813U (en) * | 2016-08-30 | 2017-03-15 | 福建南安市华天机械有限公司 | A kind of multilamellar material-feeding mechanism of automatic Powder forming press |
| CN108225507A (en) * | 2016-12-14 | 2018-06-29 | 上海硅酸盐研究所中试基地 | Powder Automatic Metage Eguipment and the dry-pressing formed system of powder for having the equipment |
| CN206966637U (en) * | 2017-07-06 | 2018-02-06 | 北京天宜上佳新材料股份有限公司 | A kind of powder material pressure setting |
| JP2019173088A (en) * | 2018-03-28 | 2019-10-10 | Ntn株式会社 | Green compact molding device |
| CN108189209B (en) * | 2018-03-30 | 2024-06-25 | 河南省机械设计研究院有限公司 | High-precision refractory material automatic weighing and distributing integrated system and distributing method |
| CN110524681B (en) * | 2019-10-14 | 2020-12-08 | 郭芬 | Brick machine filler height adjusting mechanism |
| CN110524682B (en) * | 2019-10-14 | 2021-04-23 | 安徽兰兮工程技术开发有限公司 | Static pressure forming machine for cement brick |
| CN212419627U (en) * | 2020-06-04 | 2021-01-29 | 太原红日强磁材有限公司 | Positive displacement weighing and distributing device |
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