CN214392340U - Cold press with powder conveying function - Google Patents

Abstract

The utility model discloses a cold press with powder transport function, include: the cold pressing device comprises a first lower template, a second lower template, a middle template and an upper template which are sequentially arranged from bottom to top, wherein a lower core rod is fixedly and vertically arranged on the first lower template, and the first lower template is driven by a first telescopic driving mechanism to move up and down relative to the middle template; a lower punch is fixedly and vertically arranged on the second lower template, and the second lower template is driven by a second telescopic driving mechanism to move up and down relative to the middle template; a mold cup is fixedly and vertically arranged on the middle mold plate; an upper core rod is elastically and vertically arranged on the upper template, an upper punch is fixedly and vertically arranged on the upper template, and the upper template is driven by a third telescopic driving mechanism to move up and down relative to the middle template; and the powder conveying device is arranged beside the mold cup. The utility model discloses an automatic cold press overall design is novel, compact structure, can realize the two-way press forming of string of beads, and production effect is good.

Description

Cold press with powder conveying function

Technical Field

The utility model belongs to the technical field of rope saw bead of string production facility, concretely relates to cold press with powder transport function.

Background

At present, the diamond string bead wire saw is more and more widely applied in the stone processing and building cutting industries, and correspondingly, the requirement on the diamond string bead wire saw is more and more increased, according to incomplete statistics, the annual output of the wire saw of only Chinese domestic manufacturers is over 2000 kilometers at present, and the wire saw is still rapidly increased.

An important process in the production process of the rope saw for the diamond string beads is compression molding of diamond powder, and after various metal powders (such as iron powder, cobalt powder, copper powder and the like) with different weights and diamond particles are fully and uniformly stirred, the diamond powder and a metal matrix are compressed into the rope saw string beads in a die. The existing cold press adopts one-way pressing, so that the upper density and the lower density of the beads are easily different, and the using effect of the beads is poor.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, the utility model aims to provide a cold press with powder transport function.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a cold press with powder delivery, comprising:

the cold pressing device is used for automatically pressing the matrix and the powder to form beads; the cold pressing device comprises a first lower template, a second lower template, a middle template and an upper template which are sequentially arranged from bottom to top, wherein a lower core rod is fixedly and vertically arranged on the first lower template, and the first lower template is driven by a first telescopic driving mechanism to move up and down relative to the middle template; a lower punch is fixedly and vertically arranged on the second lower template, the upper end of the lower core rod extends into the lower part of the lower punch and is in sliding fit with the lower punch, and the second lower template is driven by a second telescopic driving mechanism to move up and down relative to the middle template; a die cup is fixedly and vertically arranged on the middle die plate, the upper end of the lower punch extends into the lower part of the die cup, and the upper end of the lower punch and the lower die are in sliding fit; an upper core rod is elastically and vertically arranged on the upper template, an upper punch is fixedly and vertically arranged on the upper template, the lower end of the upper core rod extends into the upper punch and is exposed out of a preset length, the lower end of the upper punch is downwards aligned with the die cup and can be in sliding fit with the die cup, and the upper template is driven by a third telescopic driving mechanism to move up and down relative to the middle template;

and the powder conveying device is arranged beside the mold cup and used for automatically separating the powder and pushing the powder into the mold cup.

Preferably, the bottom surface of the upper die plate is fixedly provided with a U-shaped block, the upper core rod is vertically and movably arranged in the middle of the U-shaped block, a pressing plate is elastically connected below the upper die plate, the middle part of the pressing plate penetrates through the U-shaped groove of the U-shaped block and can move up and down in the U-shaped groove, the bottom surface of the pressing plate props against the top surface of the upper core rod, and the upper punch is fixedly and vertically arranged on the bottom surface of the U-shaped block.

Preferably, the both ends of clamp plate are fixed respectively and are erected the lifter, two spring seat holes have been seted up on the cope match-plate pattern, the upper end of lifter passes spring seat hole back hoist and mount on the cope match-plate pattern, be provided with the compression spring around outside the lifter in the spring seat hole, the upper end of compression spring supports and leans on the cope match-plate pattern, the lower extreme of compression spring supports and leans on the clamp plate.

Preferably, the cold pressing device further comprises a top plate, the top plate is arranged above the upper die plate and is relatively fixed with the middle die plate, two reset ejector rods used for ejecting the pressing plate downwards are fixedly arranged on the bottom surface of the top plate, two first vertical avoiding holes for the reset ejector rods to penetrate through are formed in the upper die plate, the fixed end of the third telescopic driving mechanism is arranged on the top surface of the top plate, and the movable end of the third telescopic driving mechanism penetrates through the top plate and then is fixedly connected with the upper die plate.

Preferably, the cold pressing device further comprises a frame, a platen is arranged at the top of the frame, a fixed end of the first telescopic driving mechanism is fixedly installed on the bottom surface of the platen, a movable end of the first telescopic driving mechanism penetrates through the platen and then is fixedly connected with the first lower template, a plurality of stand columns are fixedly and vertically arranged on the platen, a top plate is fixedly installed between the tops of the plurality of stand columns, the middle template is fixedly installed between the middle parts of the plurality of stand columns, the upper template is slidably installed between the upper parts of the plurality of stand columns, the first lower template and the second lower template are both slidably installed between the lower parts of the plurality of stand columns, a lifting plate is fixedly connected with the movable end of the second telescopic driving mechanism, a plurality of synchronous lifting rods are respectively and fixedly connected between the lifting plate and the second lower template, and the platen is provided with a second vertical avoiding hole for the synchronous lifting rod to penetrate through, and a third vertical avoiding hole for the synchronous lifting rod to pass through is formed in the first lower template.

Preferably, a pressure sensor is fixedly connected between the movable end of the first telescopic driving mechanism and the first lower template, the movable end of the first telescopic driving mechanism penetrates through the bedplate and then is fixedly connected with the lower end of the pressure sensor, and the upper end of the pressure sensor is fixedly connected with the first lower template.

Preferably, a plurality of hanging rods are fixedly mounted below the bedplate, a hanging plate is fixedly mounted between the lower ends of the plurality of hanging rods, the fixed end of the second telescopic driving mechanism is fixedly mounted on the bottom surface of the hanging plate, and the movable end of the second telescopic driving mechanism penetrates through the hanging plate and then is fixedly connected with the lifting plate.

Preferably, vertical sliding sleeves in sliding fit with the stand columns are fixedly embedded in the first lower template, the second lower template and the upper template.

Preferably, the lower end of the upper core rod is provided with a positioning raised head for positioning the substrate.

Preferably, the first telescopic driving mechanism is a lower core rod servo electric cylinder.

Preferably, the second telescopic driving mechanism is a lower punch servo electric cylinder.

Preferably, the third telescopic driving mechanism is an upper punch servo electric cylinder.

Preferably, the powder conveying device comprises a base, a powder hopper and a powder feeding slider, the powder hopper is fixedly mounted above the base, a powder discharge port is formed in the bottom of the powder hopper, a powder valve which is controlled to be opened and closed by a valve driving mechanism is arranged at the powder discharge port, the powder feeding slider is slidably mounted on the base, a slider driving mechanism used for driving the powder feeding slider to horizontally reciprocate is mounted on the base, a powder metering cavity which is vertically aligned with the powder discharge port and communicated with the powder metering cavity is vertically formed in the powder feeding slider, a powder metering rod capable of being in sliding fit with the powder metering cavity is arranged below the powder metering cavity, and the powder metering rod is driven to vertically move by a metering rod driving mechanism.

Preferably, a powder arch breaking rod is vertically arranged in the powder hopper, an arch breaking rod driving mechanism for driving the powder arch breaking rod to move up and down is fixedly installed on the powder hopper, and the lower end of the powder arch breaking rod is aligned with the powder discharge hole and the powder metering cavity.

Preferably, the arch breaking rod driving mechanism is a powder arch breaking cylinder.

Preferably, two parallel guide rails are fixedly mounted on the base, a guide groove is formed between the two guide rails, and the guide groove is in sliding fit with the powder feeding sliding block.

Preferably, the bottom welding of powder hopper has the bottom plate, bottom plate fixed mounting is on the base, the vertical powder discharge opening of seting up and being linked together with the powder discharge gate of bottom plate, the top at the bottom plate is installed to valve actuating mechanism's stiff end, the powder valve is the flashboard, flashboard slidable mounting is between bottom plate and the powder slider that send, flashboard and valve actuating mechanism's expansion end fixed connection, the conducting hole has been seted up on the flashboard, the conducting hole communicates powder discharge opening and powder measurement appearance chamber when the powder blanking, disconnected powder discharge opening and powder measurement appearance chamber are separated to the flashboard when the powder blanking is accomplished.

Preferably, the powder hopper is semi-funnel-shaped, the powder hopper includes vertical flat board and arc buckling plate, the powder storage chamber that the vertical flat board and the welding of arc buckling plate enclose into width from top to bottom, the welding has the backup pad between bottom plate and the arc buckling plate, the top of powder hopper is provided with the apron.

Preferably, the valve drive mechanism is a valve translation cylinder.

Preferably, a first sealing ring groove surrounding the powder metering cavity is formed in the bottom side of the powder feeding sliding block, and a first sealing ring is installed in the first sealing ring groove.

Preferably, a second sealing ring groove surrounding the powder discharge hole is formed in the bottom side of the bottom plate, and a second sealing ring is installed in the second sealing ring groove.

Preferably, the bottom side of flashboard is seted up and is encircled in the third seal ring groove of conducting hole, install the third sealing washer in the third seal ring groove.

Preferably, the fixed end of the sliding block driving mechanism is installed below the base, the rear end of the base is fixedly provided with two horizontal guide rods which are parallel to each other, a driving plate is sleeved between the two horizontal guide rods in a sliding mode, the lower end of the driving plate is fixedly connected with the movable end of the sliding block driving mechanism, and the upper end of the driving plate is fixedly connected with one end of the powder feeding sliding block.

Preferably, the slide block driving mechanism is a powder pushing cylinder.

Preferably, the base is fixedly provided with a vertical guide sleeve, the powder metering rod is in sliding fit with the vertical guide sleeve, and the powder metering cavity is aligned with the vertical guide sleeve during feeding.

Preferably, the powder metering chamber is aligned with the die cup during discharge.

Preferably, the metering rod driving mechanism is a powder metering servo electric cylinder.

Compared with the prior art, the utility model discloses following beneficial effect has: the automatic cold press has novel integral design and compact structure. The pressing device can realize the up-and-down bidirectional pressing forming of the beads, ensures the uniform up-and-down density of the beads and prolongs the service life of the beads; the pressing speed and the pressing pressure can be controlled by the first telescopic driving mechanism, the second telescopic driving mechanism and the third telescopic driving mechanism according to the actual production requirements, and the production effect is good; meanwhile, the production efficiency of the wire saw bead string is greatly improved. Wherein, powder conveyor can accomplish measurement, separation and the propelling movement of powder automatically, has improved the production efficiency of rope saw string of beads greatly, can measure the regulation according to the required powder volume of every batch of rope saw string of beads, and adaptability is better.

Drawings

Fig. 1 is a front cross-sectional view of an embodiment of the present invention in a retracted state of an upper punch.

Fig. 2 is a front sectional view of the embodiment of the present invention in the state where the upper mold is pressed in place.

Fig. 3 is a left side sectional view of the embodiment of the present invention in a state where the upper mold is pressed in place.

Fig. 4 is a perspective view of the embodiment of the present invention in the upper punch retracted state.

Fig. 5 is a plan view of the embodiment of the present invention with the vibrating plate omitted.

Fig. 6 is a plan view of the second lower template in the embodiment of the present invention.

Fig. 7 is a front sectional view of the cold press apparatus in the upper punch retracted state.

Fig. 8 is a partially enlarged view of fig. 7.

Fig. 9 is a front cross-sectional view of the cold press in the upper die-set position.

Fig. 10 is a partially enlarged view of fig. 9.

Fig. 11 is a left side sectional view of the cold press apparatus in an upper die pressed state.

Fig. 12 is a top view of the cold press apparatus.

FIG. 13 is a top view at the second lower platen in the cold press apparatus.

FIG. 14 is a front sectional view of the powder conveying apparatus.

FIG. 15 is a partial top view of the powder delivery device.

The labels in the figure are: 100. a cold pressing device; 101. a frame; 102. a platen; 103. a column; 104. a boom; 105. a hanger plate; 110. a first lower template; 111. a lower core rod; 112. a first telescopic driving mechanism; 113. a pressure sensor; 120. a second lower template; 121. punching a lower die; 122. a second telescopic driving mechanism; 123. a lifting plate; 124. a synchronization lever; 130. a middle template; 131. a mold cup; 132. a fixing ring; 140. mounting a template; 141. an upper core rod; 142. punching by an upper die; 143. a third telescopic driving mechanism; 144. a U-shaped block; 145. pressing a plate; 146. a lifting rod; 147. a spring seat bore; 148. a compression spring; 149. positioning the raised head; 150. a top plate; 151. resetting the ejector rod; 210. a base.

200. A powder conveying device; 210. a base; 211. a horizontal guide rod; 212. a drive plate; 213. a vertical guide sleeve; 214. a guide rail; 215. an anti-collision buffer block; 220. a powder hopper; 221. a powder discharge port; 222. a base plate; 223. a powder discharge hole; 224. a vertical flat plate; 225. an arc-shaped bending plate; 226. a powder storage cavity; 227. a support plate; 228. a cover plate; 229. a second seal ring; 230. a powder feeding sliding block; 231. a slider drive mechanism; 232. a powder metering cavity; 233. a first seal ring; 234. a push rod; 235. a floating joint; 240. a powder valve; 241. a valve drive mechanism; 242. a via hole; 243. a third seal ring; 250. a powder metering rod; 251. a metering rod drive mechanism; 260. breaking the arch bar by powder; 261. an arch breaking rod driving mechanism; 262. an arch breaking bracket; 300. a substrate conveying device.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 to 15, a cold press with powder conveying function comprises:

the cold pressing device 100 is used for automatically pressing the matrix and the powder to form beads; referring to fig. 7 to 13, the cold pressing device 100 includes a first lower mold plate 110, a second lower mold plate 120, a middle mold plate 130 and an upper mold plate 140, which are sequentially (parallel) arranged from bottom to top, a lower core rod 111 is fixedly and vertically arranged on the first lower mold plate 110 (e.g., at a central position), and the first lower mold plate 110 is driven by a first telescopic driving mechanism 112 to move up and down relative to the middle mold plate 130; a lower punch 121 is fixedly and vertically arranged on the second lower template 120 (such as in the center), the upper end of the lower core rod 111 extends into the lower part of the lower punch 121 and is in sliding fit with the lower punch 121, and the second lower template 120 is driven by a second telescopic driving mechanism 122 to move up and down relative to the middle template 130; a die cup 131 is fixedly and vertically arranged on the middle die plate 130 (such as at the center), the upper end of the lower punch 121 extends into the lower part of the die cup 131, and the upper end and the lower end are in sliding fit; an upper core rod 141 is elastically and vertically arranged on the upper die plate 140 (such as at the central position), an upper punch 142 is fixedly and vertically arranged on the upper die plate 140 (such as at the central position), the lower end of the upper core rod 141 extends into the upper punch 142 and is exposed out of a preset length, the lower end of the upper punch 142 is downwards aligned with the die cup 131 and can be in sliding fit with the die cup 131, and the upper die plate 140 is driven by a third telescopic driving mechanism 143 to move up and down relative to the middle die plate 130;

and the powder conveying device 200 is arranged beside the mold cup 131 and used for automatically separating powder and pushing the powder into the mold cup 131.

In an embodiment, referring to fig. 7 to 13, a U-shaped block 144 is fixedly installed on a bottom surface (e.g., a central position) of the upper mold plate 140, the upper core rod 141 is vertically movably installed in the middle of the U-shaped block 144, a pressure plate 145 is elastically connected to a lower portion of the upper mold plate 140, a middle portion of the pressure plate 145 penetrates through a U-shaped groove of the U-shaped block 144 and can move up and down in the U-shaped groove, a bottom surface of the pressure plate 145 abuts against a top surface of the upper core rod 141, and the upper punch 142 is fixedly erected on the bottom surface of the U-shaped block 144. Wherein, the stiff ends of going up stamping 142, lower stamping 121 and lower core rod 111 all can adopt the clamping ring to pass through bolt demountable installation on the position that corresponds, easy dismounting, the change of being convenient for. Wherein, the mold cup 131 can be detachably mounted on the base 210 by bolts using the fixing ring 132, and the base 210 can be detachably mounted on the middle mold plate 130 by bolts.

In an embodiment, referring to fig. 7 to 13, two ends of the pressing plate 145 are respectively fixed and vertically provided with a lifting rod 146, the upper mold plate 140 is provided with two spring seat holes 147, an upper end of the lifting rod 146 passes through the spring seat holes 147 and then is hoisted on the upper mold plate 140, a compression spring 148 surrounding the lifting rod 146 is arranged in the spring seat hole 147, an upper end of the compression spring 148 abuts against the upper mold plate 140, and a lower end of the compression spring 148 abuts against the pressing plate 145. The lifting rod 146 may be a double-threaded screw, two ends of the double-threaded screw are respectively and fixedly provided with a nut (and a gasket), the lower end of the double-threaded screw passes through the pressing plate 145 and then is locked by the nut, and the upper end of the double-threaded screw passes through the upper die plate 140 from the spring seat hole 147 and then is provided with the nut.

In an embodiment, referring to fig. 7 to 13, the cold pressing device further includes a top plate 150, the top plate 150 is disposed above the upper die plate 140 and is fixed to the middle die plate 130, two reset ejector rods 151 for ejecting the pressing plate 145 downwards are fixedly mounted on a bottom surface of the top plate 150, two first vertical avoiding holes for the reset ejector rods 151 to pass through are formed in the upper die plate 140, the upper core rod 141 and the upper die 142 can be prevented from being clamped by the reset ejector rods 151, when the upper core rod 141 and the upper die 142 are clamped, the reset ejector rods 151 eject the pressing plate 145 downwards when the upper die 142 ascends, and further eject the upper core rod 141 downwards to reset smoothly; the fixed end of the third telescopic driving mechanism 143 is mounted on the top surface of the top plate 150, and the movable end of the third telescopic driving mechanism 143 passes through the top plate 150 and then is fixedly connected with the upper die plate 140. The upper portion of the reset ejector rod 151 can be a threaded rod, the bottom surface of the top plate 150 can be provided with a threaded hole matched with the threaded rod, and the threaded rod can be sleeved with a locking nut.

In an embodiment, referring to fig. 7 to 13, the cold pressing device further includes a frame 101, a platen 102 is disposed at the top of the frame 101, a fixed end of the first telescopic driving mechanism 112 is fixedly mounted on the bottom surface of the platen 102, a movable end of the first telescopic driving mechanism 112 penetrates through the platen 102 and is fixedly connected with a first lower template 110, a plurality of columns 103 are fixedly erected on the platen 102, the top plate 150 is fixedly mounted between the tops of the columns 103, the middle template 130 is fixedly mounted between the middle portions of the columns 103, the upper template 140 is slidably mounted between the upper portions of the columns 103, the first lower template 110 and the second lower template 120 are both slidably mounted between the lower portions of the columns 103, a lifting plate 123 is fixedly connected to the movable end of the second telescopic driving mechanism 122, and a plurality of synchronization rods 124 are respectively fixedly connected between the lifting plate 123 and the second lower template 120, the platen 102 is provided with a second vertical avoiding hole for the synchronization rod 124 to pass through, and the first lower template 110 is provided with a third vertical avoiding hole for the synchronization rod 124 to pass through. The vertical sliding sleeves in sliding fit with the columns 103 are fixedly embedded in the first lower template 110, the second lower template 120 and the upper template 140, and can be detached and replaced, so that the first lower template 110, the second lower template 120 and the upper template 140 are prevented from directly rubbing against the columns 103, and the service lives of the first lower template 110, the second lower template 120 and the upper template 140 are prolonged.

In an embodiment, referring to fig. 7 to 13, a pressure sensor 113 is fixedly connected between the movable end of the first telescopic driving mechanism 112 and the first lower mold plate 110, the movable end of the first telescopic driving mechanism 112 penetrates through the platen 102 and is fixedly connected with the lower end of the pressure sensor 113, and the upper end of the pressure sensor 113 is fixedly connected with the first lower mold plate 110. During pressing, the pressure sensor 113 can sense the pressure applied to the lower core rod 111, so as to control the actions of the first telescopic driving mechanism 112 and other components. For example, when the pressure of the pressure sensor 113 is significantly increased (e.g., about 50 kg), the first telescopic driving mechanism 112 is slowly retracted, and after the upper punch 142 and the upper core rod 141 are synchronously lowered by about 12mm, the second telescopic driving mechanism 122 starts to be rapidly extended, the lower punch 121 is rapidly raised by about 30mm and then slowly raised by about 5mm, and simultaneously the upper punch 142 is slowly lowered by about 7mm, thereby completing the bidirectional pressing.

In an embodiment, referring to fig. 7 to 13, a plurality of (e.g., two) suspension rods 104 may be fixedly mounted below the platen 102, a suspension plate 105 is fixedly mounted between lower ends of the plurality of suspension rods 104, a fixed end of the second telescopic driving mechanism 122 is fixedly mounted on a bottom surface of the suspension plate 105, and a movable end of the second telescopic driving mechanism 122 passes through the suspension plate 105 and is fixedly connected to the lifting plate 123. Of course, the fixed end of the second telescopic driving mechanism 122 may be directly mounted on the frame 101.

In an embodiment, referring to fig. 7 to 13, a positioning protrusion 149 for positioning the substrate is disposed at a lower end of the upper core rod 141, and the positioning protrusion 149 can be inserted into the substrate, so that the positioning is reliable; of course, the lower end of the upper core rod 141 may be designed to be tapered, and may also play a role in positioning. For convenience of manufacture, the first lower template 110 and the second lower template 120 may have the same size and shape, and the upper template 140 and the top plate 150 may have the same size and shape.

In an embodiment, referring to fig. 7 to 13, the first telescopic driving mechanism 112 is preferably, but not limited to, a lower core rod 111 servo electric cylinder, the second telescopic driving mechanism 122 is preferably, but not limited to, a lower punch 121 servo electric cylinder, and the third telescopic driving mechanism 143 is preferably, but not limited to, an upper punch 142 servo electric cylinder, and the servo electric cylinders can precisely control the speed and the height position according to the process requirements, so that the powder pressing process in the die cup 131 reaches an ideal state, and qualified (high-quality) beads are pressed; of course, the first telescopic driving mechanism 112, the second telescopic driving mechanism 122, or the third telescopic driving mechanism 143 may be a telescopic driving mechanism such as an air cylinder, an oil cylinder, or an electric push rod.

Referring to fig. 7 to 13, the working principle of the cold pressing device is as follows: before pressing, the metered powder is pushed into the mold cup 131, and then the matrix is pushed above the mold cup 131. During pressing, the upper core rod 141 and the upper punch 142 are pressed downwards, the upper core rod 141 firstly props against the matrix, after the compression spring 148 is compressed in the process that the upper punch 142 descends for a certain distance, the upper core rod 141 and the upper punch 142 continue descending, the matrix is pressed on the lower core rod 111 and continues descending, meanwhile, the lower core rod 111, the upper core rod 141 and the upper punch 142 synchronously descend together, and the matrix is sent into powder in the die cup 131; when the upper punch 142 starts to press the powder in the die cup 131, the lower punch 121 also starts to move upwards at the same speed as the upper punch 142, and the powder is pressed in two directions under the extrusion of the upper punch 142 and the lower punch 121; after the powder in the die cup 131 is pressed to a preset height, the upper punch 142, the lower punch 121 and the lower core rod 111 stop moving, and the pressure is maintained for a period of time, so that the pressed and formed powder is fully shaped; finally, the upper punch 142, the lower punch 121 and the lower core rod 111 move upwards to eject the pressed beads out of the die cup 131.

In one embodiment, referring to fig. 14 to 15, the powder conveying device 200 includes a base 210, a powder hopper 220 and a powder feeding slide 230, the powder hopper 220 is fixedly arranged above the base 210, the bottom of the powder hopper 220 is provided with a powder discharge hole 221, a powder valve 240 controlled by a valve driving mechanism 241 is arranged at the powder discharge hole 221, the powder feeding sliding block 230 is slidably mounted on the base 210, a sliding block driving mechanism 231 for driving the powder feeding sliding block 230 to horizontally reciprocate is mounted on the base 210, a powder metering cavity 232 which is aligned and communicated with the powder discharge hole 221 up and down is vertically arranged on the powder feeding slide block 230, a powder metering rod 250 which can be in sliding fit with the powder metering cavity 232 is arranged below the powder metering cavity 232, the powder metering rod 250 is driven by a metering rod driving mechanism 251 to move up and down.

In an embodiment, a powder arch breaking rod 260 is vertically arranged in the powder hopper 220, an arch breaking rod driving mechanism 261 for driving the powder arch breaking rod 260 to move up and down is fixedly installed on the powder hopper 220, the lower end of the powder arch breaking rod 260 is aligned with the powder discharge port 221 and the powder metering accommodating cavity 232, powder in the powder metering accommodating cavity 232 is broken through the powder arch breaking rod 260, and the phenomenon of insufficient feeding is avoided. The arch breaking rod driving mechanism 261 is preferably but not limited to a powder arch breaking cylinder, and the cylinder has the advantages of rapid action, fast response, good working environment adaptability and the like; of course, the arch breaking rod driving mechanism 261 may also be a telescopic driving mechanism such as an oil cylinder, an electric push rod, etc.

In an embodiment, two parallel guide rails 214 are fixedly installed on the base 210, a guide groove is formed between the two guide rails 214, the guide groove is in sliding fit with the powder feeding sliding block 230, and the powder feeding sliding block 230 is guided to perform linear reciprocating motion by the guide rails 214. In order to avoid damaging the components of the mold during a fault, a crash cushion 215 is installed at the front end of the base 210 (e.g., through an elastic pad), and a V-shaped notch is formed in the center of the front end of the crash cushion 215.

In an embodiment, a bottom plate 222 is welded at the bottom end of the powder hopper 220, the bottom plate 222 is fixedly installed on the base 210, a powder discharge hole 223 communicated with the powder discharge hole 221 is vertically formed in the bottom plate 222, a fixed end of the valve driving mechanism 241 is installed above the bottom plate 222, the powder valve 240 is a gate plate, the gate plate is slidably installed between the bottom plate 222 and the powder feeding sliding block 230, the gate plate is fixedly connected with a movable end of the valve driving mechanism 241, a through hole 242 is formed in the gate plate, the through hole 242 communicates the powder discharge hole 223 with the powder metering cavity 232 when powder is discharged, and the gate plate cuts off the powder discharge hole 223 and the powder metering cavity 232 when powder is discharged.

In an embodiment, the powder hopper 220 is in a half funnel shape, the powder hopper 220 includes a vertical flat plate 224 and an arc-shaped bent plate 225, the vertical flat plate 224 and the arc-shaped bent plate 225 are welded to form a powder storage cavity 226 with a wide top and a narrow bottom (for example, the upper portion is in a semi-cylindrical shape, and the lower portion is in a semi-conical shape), a support plate 227 is welded between the bottom plate 222 and the arc-shaped bent plate 225, and a cover plate 228 is disposed at the top end of the powder hopper 220. The fixed end of the arch breaking rod driving mechanism 261 can be fixed on the outer side wall of the vertical flat plate 224 through an arch breaking support 262, the movable end of the arch breaking rod driving mechanism 261 is fixedly connected with the upper end of the powder arch breaking rod 260, and the cover plate 228 can be provided with a avoiding hole for the powder arch breaking rod 260 to pass through.

In an embodiment, the valve driving mechanism 241 is preferably, but not limited to, a valve translation cylinder, and the cylinder has the advantages of rapid action, fast response, good adaptability to working environment, and the like; of course, the valve driving mechanism 241 may also be a telescopic driving mechanism such as an oil cylinder, an electric push rod, etc.

In one embodiment, a first sealing ring groove surrounding the powder measuring cavity 232 is formed in the bottom side of the powder feeding sliding block 230, and a first sealing ring 233 is installed in the first sealing ring groove; a second sealing ring groove surrounding the powder discharge hole 223 is formed in the bottom side of the bottom plate 222, and a second sealing ring 229 is installed in the second sealing ring groove; the bottom side of flashboard is seted up the third seal ring groove that encircles in conducting hole 242, install third sealing washer 243 in the third seal ring groove, through the setting of sealing washer, reduced the powder and got into in the gap, improved the life of each part.

In an embodiment, the fixed end of the slider driving mechanism 231 is installed below the base 210, the rear end of the base 210 is fixed with two horizontal guide rods 211 parallel to each other, a driving plate 212 is slidably sleeved between the two horizontal guide rods 211, the lower end of the driving plate 212 is fixedly connected with the movable end of the slider driving mechanism 231, and the upper end of the driving plate 212 (for example, the upper end can be connected with one end of the powder feeding slider 230 through a floating joint 235 and a push rod 234), so that the driving structure can save space and is compact in structure.

In an embodiment, the slide block driving mechanism 231 is preferably, but not limited to, a powder pushing cylinder, and the cylinder has the advantages of rapid action, fast response, good adaptability to working environment, and the like; of course, the slide block driving mechanism 231 may also be a telescopic driving mechanism such as an oil cylinder, an electric push rod, etc. The fixed end of the slider driving mechanism 231 is fixed relative to the base 210, and the movable end of the slider driving mechanism 231 is fixedly connected with the lower end of the powder metering rod 250.

In an embodiment, the vertical guide sleeve 213 is fixedly installed on the base 210, the vertical guide sleeve 213 is detachable and convenient to replace, the powder metering rod 250 is in sliding fit with the vertical guide sleeve 213, and the powder metering cavity 232 is aligned with the vertical guide sleeve 213 during feeding, so that the base 210 is prevented from directly rubbing the powder metering rod 250, and the service life of the base 210 is prolonged. Of course, the vertical guide sleeve 213 may be eliminated, and the guide hole may be directly formed on the base 210.

In one embodiment, powder measurement volume 232 is aligned with cup 131 during discharge so that powder in powder measurement volume 232 falls into cup 131. During feeding, the slide block driving mechanism 231 drives the powder measuring cavity 232 of the powder feeding slide block 230 to move from the upper part of the vertical guide sleeve 213 to the upper part of the mold cup 131.

In one embodiment, the metering rod driving mechanism 251 is preferably, but not limited to, a powder metering servo electric cylinder, the servo electric cylinder can accurately control the speed and the position, and the powder metering is more accurate; of course, the metering rod driving mechanism 251 may also be a telescopic driving mechanism such as an air cylinder, an oil cylinder, an electric push rod, etc.

The working principle of the powder conveying device is as follows: firstly, a metering rod driving mechanism 251 drives a powder metering rod 250 to ascend to a set position (set according to the weight of a powder formula), and the size of a powder metering cavity 232 is adjusted; then, the valve driving mechanism 241 pushes the powder valve 240 to open the powder discharge hole 221 (and the powder discharge hole 223), so that the powder in the powder hopper 220 falls into the powder metering cavity 232; then the arch breaking rod driving mechanism 261 drives the powder arch breaking rod 260 to extend and retract for 1 time or 2 times (determined according to the actual arch breaking condition); then the valve driving mechanism 241 pushes the powder valve 240 to close the powder discharge hole 221 (and the powder discharge hole 223); then, the metering rod driving mechanism 251 drives the powder metering rod 250 to descend to a zero position; then the sliding block driving mechanism 231 drives the powder feeding sliding block 230 to move horizontally, and the metered powder is pushed to the pressing position of the string of beads of the rope saw (namely the position of the die cup 131) and falls into the die cup 131; finally, the slide block driving mechanism 231 drives the powder feeding slide block 230 to return to the original position.

As shown in fig. 1 to 15, a cold pressing method of a cold press with a powder conveying function comprises the following steps:

controlling the powder conveying device 200 to work, and pushing the metered powder into the mold cup 131;

(which may be, but is not limited to, by an additional substrate transport apparatus 300) to push the substrate over the mold cup 131;

controlling the pressing device 100 to work, wherein the upper core rod 141 and the upper punch 142 are pressed downwards, the upper core rod 141 firstly props against the matrix, the compression spring 148 is compressed in the process that the upper punch 142 descends for a certain distance, the upper core rod 141 and the upper punch 142 continue descending, the matrix is pressed on the lower core rod 111 and continues descending, and meanwhile, the lower core rod 111, the upper core rod 141 and the upper punch 142 synchronously descend together to send the matrix into powder in the die cup 131; when the upper punch 142 starts to press the powder in the die cup 131, the lower punch 121 also starts to move upwards at the same speed as the upper punch 142, and the powder is pressed in two directions under the extrusion of the upper punch 142 and the lower punch 121; after the powder in the die cup 131 is pressed to a preset height, the upper punch 142, the lower punch 121 and the lower core rod 111 stop moving, and the pressure is maintained for a period of time, so that the pressed and formed powder is fully shaped; finally, the upper punch 142, the lower punch 121 and the lower core rod 111 move upwards to eject the pressed beads out of the die cup 131.

In one embodiment, the cold pressing method comprises the following specific steps:

s1, positioning a powder metering rod 250:

the metering rod drive mechanism 251 drives the powder metering rod 250 up to a set position (set according to the weight of the formula).

S2, opening a powder valve 240:

the valve driving mechanism 241 pushes the powder valve to open the powder discharge hole 221 (and the powder discharge hole 223), and the powder in the powder hopper 220 falls into the powder measurement chamber 232.

S3, breaking the arch of powder:

the arch breaking rod driving mechanism 261 drives the powder arch breaking rod 260 to extend and retract 1 time or 2 times (determined according to the actual arch breaking condition).

S4, closing the powder valve 240:

the valve driving mechanism 241 pushes the powder valve 240 to close the powder discharge hole 221 (and the powder discharge hole 223).

S5, powder withdrawal metering rod 250:

the metering rod drive mechanism 251 drives the powder metering rod 250 to descend to the zero position.

S6, powder feeding:

the slide block driving mechanism 231 drives the powder feeding slide block 230 to extend out, so that the metered powder is pushed to the pressing position of the string saw bead (namely, the position of the mold cup 131) and falls into the mold cup 131.

S7, stretching of the lower core rod 111:

the first telescopic driving mechanism 112 drives, the lower core rod 111 firstly descends rapidly for a predetermined distance (such as 30-50 mm), and then reverses and rises rapidly to a zero position.

S8, returning the powder feeding:

the slider driving mechanism 231 drives the powder feeding slider 230 to retract to the home position.

S9, conveying the base body:

the substrate is pushed over the mold cup 131, specifically onto the lower core pin 111.

S10, positioning of the substrate:

the third telescopic driving mechanism 143 is rapidly extended, the upper core rod 141 and the upper punch 142 are rapidly lowered (e.g., 60 mm) to a preliminary position (+ 10 mm), and the upper core rod 141 is pressed against the base.

S11, pressing:

the third telescopic driving mechanism 143 is extended slowly, the upper core rod 141 and the upper punch 142 are lowered slowly by a predetermined distance (e.g. 10 mm), until the compression spring 148 is compressed to the bottom, the upper core rod 141 and the lower core rod 111 push the substrate without clearance, when the pressure of the pressure sensor 113 on the lower core rod 111 is increased significantly (e.g. 50 kg), the first telescopic driving mechanism 112 is retracted slowly, after the upper punch 142 and the upper core rod 141 are lowered synchronously by a predetermined distance (e.g. 12 mm), the second telescopic driving mechanism 122 starts to be extended rapidly, the lower punch 121 is raised rapidly by a predetermined distance (e.g. 30 mm) and then raised slowly by a predetermined distance (e.g. 5 mm), and meanwhile, the upper punch 142 is also lowered slowly by a predetermined distance (e.g. 7 mm), thereby completing the bidirectional pressing.

S12, pressure maintaining:

after the upper punch 142 and the lower punch 121 are pressed in place, the preset time is kept, and the specific time is determined according to the actual pressing effect.

S13, bead unwinding:

the third telescopic driving mechanism 143 retracts rapidly, and the upper punch 142 and the upper core rod 141 are raised by a predetermined distance (e.g., 90 mm) and retract to the initial position; simultaneously, the lower punch 121 and the lower core rod 111 are raised at a medium speed by a predetermined distance (e.g., 20 mm) to a zero position to eject the pressed beads out of the die cup 131.

S14, resetting the lower punch 121:

the first telescopic driving mechanism 112 is rapidly withdrawn and the lower punch 111 is rapidly lowered by a predetermined distance (e.g., 55 mm) to return to the initial position.

S15, start the next cycle:

the next cycle was carried out in the same manner as in S1 to S14, and the previous pressed beads were pushed out while feeding the powder.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art should not depart from the technical scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the scope of the present invention.

Claims (10)

1. A cold press with powder delivery, comprising:

the cold pressing device is used for automatically pressing the matrix and the powder to form beads; the cold pressing device comprises a first lower template, a second lower template, a middle template and an upper template which are sequentially arranged from bottom to top, wherein a lower core rod is fixedly and vertically arranged on the first lower template, and the first lower template is driven by a first telescopic driving mechanism to move up and down relative to the middle template; a lower punch is fixedly and vertically arranged on the second lower template, the upper end of the lower core rod extends into the lower part of the lower punch and is in sliding fit with the lower punch, and the second lower template is driven by a second telescopic driving mechanism to move up and down relative to the middle template; a die cup is fixedly and vertically arranged on the middle die plate, the upper end of the lower punch extends into the lower part of the die cup, and the upper end of the lower punch and the lower die are in sliding fit; an upper core rod is elastically and vertically arranged on the upper template, an upper punch is fixedly and vertically arranged on the upper template, the lower end of the upper core rod extends into the upper punch and is exposed out of a preset length, the lower end of the upper punch is downwards aligned with the die cup and can be in sliding fit with the die cup, and the upper template is driven by a third telescopic driving mechanism to move up and down relative to the middle template;

and the powder conveying device is arranged beside the mold cup and used for automatically separating the powder and pushing the powder into the mold cup.

2. The cold press with powder conveying function according to claim 1, characterized in that: the bottom surface of the upper template is fixedly provided with a U-shaped block, the upper core rod is vertically and movably arranged in the middle of the U-shaped block, a pressing plate is elastically connected below the upper template, the middle part of the pressing plate penetrates through the U-shaped groove of the U-shaped block and can move up and down in the U-shaped groove, the bottom surface of the pressing plate props against the top surface of the upper core rod, and the upper stamping is fixedly and vertically arranged on the bottom surface of the U-shaped block; the two ends of the pressing plate are respectively fixedly and vertically provided with a lifting rod, the upper template is provided with two spring seat holes, the upper end of the lifting rod penetrates through the spring seat holes and then is hoisted on the upper template, a compression spring surrounding the lifting rod is arranged in the spring seat hole, the upper end of the compression spring is abutted against the upper template, and the lower end of the compression spring is abutted against the pressing plate.

3. The cold press with powder conveying function according to claim 2, characterized in that: the cold pressing device further comprises a top plate, the top plate is arranged above the upper die plate and is relatively fixed with the middle die plate, two reset ejector rods used for ejecting the pressing plate downwards are fixedly arranged on the bottom surface of the top plate, two first vertical avoiding holes for the reset ejector rods to penetrate through are formed in the upper die plate, the fixed end of the third telescopic driving mechanism is installed on the top surface of the top plate, and the movable end of the third telescopic driving mechanism is fixedly connected with the upper die plate after penetrating through the top plate.

4. The cold press with powder conveying function according to claim 3, characterized in that: the cold pressing device further comprises a rack, a table plate is arranged at the top of the rack, the fixed end of the first telescopic driving mechanism is fixedly arranged on the bottom surface of the table plate, the movable end of the first telescopic driving mechanism penetrates through the table plate and then is fixedly connected with the first lower template, a plurality of stand columns are fixedly and vertically arranged on the table plate, the top plate is fixedly arranged between the tops of the plurality of stand columns, the middle template is fixedly arranged between the middle parts of the plurality of stand columns, the upper template is slidably arranged between the upper parts of the plurality of stand columns, the first lower template and the second lower template are both slidably arranged between the lower parts of the plurality of stand columns, the movable end of the second telescopic driving mechanism is fixedly connected with a lifting plate, a plurality of synchronous lifting rods are respectively and fixedly connected between the lifting plate and the second lower template, and the table plate is provided with a second vertical avoiding hole for the synchronous lifting rods to penetrate through, and a third vertical avoiding hole for the synchronous lifting rod to pass through is formed in the first lower template.

5. The cold press with powder conveying function according to claim 4, characterized in that: a pressure sensor is fixedly connected between the movable end of the first telescopic driving mechanism and the first lower template, the movable end of the first telescopic driving mechanism penetrates through the bedplate and then is fixedly connected with the lower end of the pressure sensor, and the upper end of the pressure sensor is fixedly connected with the first lower template; the lower end of the upper core rod is provided with a positioning raised head for positioning the substrate; the first telescopic driving mechanism is a lower core rod servo electric cylinder, the second telescopic driving mechanism is a lower punch servo electric cylinder, and the third telescopic driving mechanism is an upper punch servo electric cylinder.

6. The cold press with powder conveying function according to claim 1, characterized in that: the powder conveying device comprises a base, a powder hopper and a powder feeding sliding block, wherein the powder hopper is fixedly installed above the base, a powder discharging port is formed in the bottom of the powder hopper, a powder valve is arranged at the powder discharging port and is controlled to be opened and closed by a valve driving mechanism, the powder feeding sliding block is slidably installed on the base, a sliding block driving mechanism used for driving the powder feeding sliding block to horizontally reciprocate is installed on the base, a powder metering accommodating cavity which is vertically aligned with the powder discharging port is vertically formed in the powder feeding sliding block, a powder metering rod capable of being in sliding fit with the powder metering accommodating cavity is arranged below the powder metering accommodating cavity, and the powder metering rod is driven to move up and down by a metering rod driving mechanism.

7. The cold press with powder conveying function according to claim 6, characterized in that: the powder hopper is internally and vertically provided with a powder arch breaking rod, the powder hopper is fixedly provided with an arch breaking rod driving mechanism for driving the powder arch breaking rod to move up and down, and the lower end of the powder arch breaking rod is aligned with a powder discharge hole and a powder metering cavity.

8. The cold press with powder transfer function of claim 7, characterized in that: the arch breaking rod driving mechanism is a powder arch breaking cylinder.

9. The cold press with powder conveying function according to claim 6, characterized in that: the bottom welding of powder hopper has the bottom plate, bottom plate fixed mounting is on the base, the vertical powder discharge opening of seting up and being linked together with the powder discharge gate of bottom plate, the stiff end of valve actuating mechanism is installed in the top of bottom plate, the powder valve is the flashboard, flashboard slidable mounting is between bottom plate and the powder slider that send, flashboard and valve actuating mechanism's expansion end fixed connection, the conducting hole has been seted up on the flashboard, the conducting hole communicates powder discharge opening and powder measurement appearance chamber when the powder blanking, the flashboard separates disconnected powder discharge opening and powder measurement appearance chamber when the powder blanking is accomplished.

10. The cold press with powder conveying function according to claim 6, characterized in that: the metering rod driving mechanism is a powder metering servo electric cylinder.

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