CN112809001B - Automatic cold press for powder belt matrix compression molding and control method thereof - Google Patents

Abstract

The invention discloses an automatic cold press for powder belt matrix compression molding and a control method thereof, wherein the automatic cold press comprises: 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; the powder conveying device is arranged beside the mold cup; and the substrate conveying device is arranged beside the mold cup. The automatic cold press has novel integral design and compact structure, can realize bidirectional compression molding of the beads, and has good production effect.

Description

Automatic cold press for powder belt matrix compression molding and control method thereof

Technical Field

The invention belongs to the technical field of string bead production equipment of a wire saw, and particularly relates to an automatic cold press for powder belt matrix press forming and a control method thereof.

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.

Disclosure of Invention

In view of the shortcomings of the prior art, the invention aims to provide an automatic cold press specially used for powder strip matrix compression molding and a control method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme: an automated cold press for powder strip matrix press forming, 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;

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

and the substrate conveying device is arranged beside the mold cup and used for automatically arranging and separating the substrates and pushing the substrates to the upper part of 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 a 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 a first lower template, a plurality of stand columns are fixedly and vertically arranged on the platen, a plurality of stand columns are fixedly installed between the tops of the stand columns, a plurality of middle templates are fixedly installed between the middle parts of the stand columns, an upper template is slidably installed between the upper parts of the stand columns, a first lower template and a second lower template are slidably installed between the lower parts of the stand columns, a lifting plate is fixedly connected with a movable end of a second telescopic driving mechanism, a plurality of synchronous lifting rods are fixedly connected between the lifting plate and the second lower template respectively, a second vertical avoiding hole for the synchronous lifting rod to penetrate through is formed in the platen, and a third vertical avoiding hole for the synchronous lifting rod to penetrate 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 in a semi-funnel shape and comprises a vertical flat plate and an arc-shaped bending plate, the vertical flat plate and the arc-shaped bending plate are welded to form a powder storage cavity with a wide upper part and a narrow lower part, a supporting plate is welded between the bottom plate and the arc-shaped bending plate, and a cover plate is arranged at the top end of the powder hopper.

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

Preferably, a first sealing ring groove surrounding the powder measuring 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.

Preferably, base member conveyor includes vibration dish, slope slide, base member separating mechanism and base member push mechanism, the discharge end of vibration dish docks with the higher one end of slope slide, the lower one end of slope slide docks with base member separating mechanism's entry, base member separating mechanism's export is relative from top to bottom with base member push mechanism's execution end.

Preferably, the base member separating mechanism includes base member separating seat board, first separating guide, second separating guide, separation push pedal and base member separation telescopic driving mechanism, first separating guide and second separating guide symmetry are fixed to be set up on base member separating seat board, form horizontal baffle box between first separating guide and the second separating guide, the entry and the lower one end of slope slide of horizontal baffle box dock mutually, the stiff end of base member separation telescopic driving mechanism is installed on base member separating seat board, the flexible direction perpendicular to slope slide's of base member separation telescopic driving mechanism direction of stretching out and drawing back, separation push pedal fixed mounting is on base member separation telescopic driving mechanism's activity end, one side that the separation push pedal is close to horizontal baffle box is provided with the vertical separation groove that only can hold a base member, vertical separation groove docks with the export of horizontal baffle box when base member separation telescopic driving mechanism contracts, be provided with vertical baffle hole on the base member separating seat board, vertical separation groove is relative from top to bottom with vertical baffle hole when base member separation telescopic driving mechanism stretches out.

Preferably, a vertical material guiding sleeve is embedded in the vertical material guiding hole.

Preferably, the separation push plate is in sliding fit with the side surfaces of the first separation guide plate and the second separation guide plate respectively.

Preferably, the base body separation telescopic driving mechanism is a base body pushing cylinder.

The cross section of the vertical separation groove is U-shaped.

Preferably, base member push mechanism includes flexible actuating mechanism of base member propelling movement and automatic clamping jaw, the expansion end at the flexible actuating mechanism of base member propelling movement is installed to the stiff end of automatic clamping jaw, be provided with the centre gripping groove between two fingers of automatic clamping jaw, the centre gripping groove is relative from top to bottom with vertical stock guide when the flexible actuating mechanism of base member propelling movement contracts, the centre gripping groove is relative from top to bottom with the die cup when the flexible actuating mechanism of base member propelling movement stretches out.

Preferably, the base body pushing and stretching driving mechanism is a base body pushing cylinder.

Preferably, the automatic gripper is a pneumatic gripper.

Preferably, slope slide, base member separating mechanism and base member pushing mechanism all install in well template, vibration dish and well template all fixed mounting are in the frame.

The invention also provides a control method of the automatic cold press for powder strip matrix compression molding, which comprises the following steps:

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

controlling the substrate conveying device to work, and pushing the substrate above the mold cup;

controlling a pressing device to work, enabling an upper core rod and an upper punch to descend together, enabling the upper core rod to firstly prop against a substrate and then stop descending, enabling the upper punch to continue descending in place and then continue descending with the upper core rod, enabling the upper core rod to tightly press the substrate on the lower core rod, enabling the lower core rod to synchronously descend together with the upper core rod and the upper punch simultaneously, and feeding the substrate into powder in a die cup; when the upper punch starts to press the powder in the die cup, the lower punch also starts to move upwards at the same speed as the upper punch, and the powder is pressed in two directions under the extrusion of the upper punch and the lower punch; after the powder in the die cup is pressed to a preset height, the upper punch, the lower punch and the lower core rod stop moving, and the pressure is maintained for a preset time, so that the powder after being pressed and formed is fully shaped; and finally, the upper punch, the lower punch and the lower core rod move upwards to eject the pressed beads out of the die cup.

Compared with the prior art, the invention has the following beneficial effects: 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. The base body conveying device is novel in design and compact in structure, can automatically complete arrangement, separation and pushing of the base body, and greatly improves production efficiency of the wire saw bead.

Drawings

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

FIG. 2 is a front cross-sectional view of an embodiment of the present invention as it is being over-molded into place.

FIG. 3 is a left side cross-sectional view of an embodiment of the present invention as it is being over-molded into place.

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

FIG. 5 is a top view of the embodiment of the present invention with the vibratory pan omitted.

Figure 6 is a top view at a second lower platen in an 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.

FIG. 16 is a front sectional view of the substrate transport apparatus.

FIG. 17 is a plan view of the substrate transport apparatus.

Fig. 18 is a partially enlarged view of fig. 16.

Fig. 19 is a partially enlarged view of fig. 17.

FIG. 20 is a plan view of a holding groove in the substrate transport apparatus.

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 support.

1. A substrate; 300. a substrate conveying device; 310. a vibrating pan; 320. inclining the slideway; 330. a substrate separating mechanism; 331. a substrate separation seat plate; 332. a first separating guide; 333. a second separation guide plate; 334. separating the push plate; 335. a substrate separation telescopic driving mechanism; 336. a horizontal material guide chute; 337. a vertical separation tank; 338. a vertical material guide hole; 339. a vertical material guiding sleeve; 340. a substrate pushing mechanism; 341. the substrate pushing and stretching driving mechanism; 342. automatic clamping jaws; 343. a clamping groove.

Detailed Description

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

As shown in fig. 1 to 20, an automatic cold press for press forming of a powder strip substrate includes:

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 template 110, a second lower template 120, a middle template 130 and an upper template 140, which are sequentially (parallel) arranged from bottom to top, a lower core rod 111 is fixedly and vertically arranged on the first lower template 110 (such as at a central position), and the first lower template 110 is driven by a first telescopic driving mechanism 112 to move up and down relative to the middle template 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;

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;

and a substrate transfer device 300 disposed beside the mold cup 131 for automatically aligning, separating and pushing the substrate above the mold cup 131.

Wherein, the powder conveying device 200 and the substrate conveying device 300 can be perpendicular to each other.

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 pressing plate 145 is elastically connected to a lower portion of the upper mold plate 140, a middle portion of the pressing 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 pressing plate 145 abuts against a top surface of the upper core rod 141, and the upper die 142 is fixedly and vertically installed 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, the 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, the upper end of the compression spring 148 abuts against the upper mold plate 140, and the 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 pushing the pressing plate 145 downward 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 punch 142 can be prevented from being clamped by the reset ejector rods 151, when the upper core rod 141 and the upper die punch 142 are clamped, the reset ejector rods 151 push the pressing plate 145 downward when the upper die punch 142 rises, and further push the upper core rod 141 downward 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 mold plate 140. The upper part of the reset top rod 151 may be a threaded rod, the bottom surface of the top plate 150 may be provided with a threaded hole matched with the threaded rod, and the threaded rod may 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 a bottom surface of the platen 102, a movable end of the first telescopic driving mechanism 112 penetrates through the platen 102 and then is fixedly connected with a first lower template 110, a plurality of columns 103 are fixedly and vertically disposed on the platen 102, the top plate 150 is fixedly mounted between tops of the columns 103, the middle template 130 is fixedly mounted between middle portions of the columns 103, the upper template 140 is slidably mounted between upper portions of the columns 103 (for example, two columns), the first lower template 110 and the second lower template 120 are both slidably mounted between lower portions of the columns 103, a lifting plate 123 is fixedly connected to a movable end of the second telescopic driving mechanism 122, a plurality of synchronization rods 124 are respectively and fixedly connected between the lifting plate 123 and the second lower template 120, a second vertical avoidance hole for the synchronization rod 124 to pass through is formed in the platen 102, and a third vertical avoidance hole for the synchronization rod 124 to pass through is formed in the first lower template 110. The vertical sliding sleeves which are 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, the vertical sliding sleeves can be detached and replaced, friction between the first lower template 110, the second lower template 120 and the upper template 140 and the columns 103 is avoided, 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 die plate 110, the movable end of the first telescopic driving mechanism 112 penetrates through the platen 102 and is then 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 die 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 increased significantly (for example, when about 50kg is reached), the first telescopic driving mechanism 112 is retracted slowly, and after the upper punch 142 and the upper core rod 141 are lowered by about 12mm synchronously, the second telescopic driving mechanism 122 starts to extend rapidly, the lower punch 121 is raised rapidly by about 30mm first and then raised slowly by about 5mm, and at the same time, the upper punch 142 is also lowered slowly 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 base plate 102, a suspension plate 105 is fixedly mounted between lower ends of the 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 then 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 the lower end of the upper core rod 141, and the positioning protrusion 149 can be inserted into the substrate, so that 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, the third telescopic driving mechanism 143 is preferably, but not limited to, an upper punch 142 servo electric cylinder, and the servo electric cylinder 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 an embodiment, referring to fig. 14 to 15, the powder conveying device 200 includes a base 210, a powder hopper 220, and a powder feeding slider 230, the powder hopper 220 is fixedly installed above the base 210, a powder discharging port 221 is formed at the bottom of the powder hopper 220, a powder valve 240 controlled by a valve driving mechanism 241 is arranged at the powder discharging port 221, the powder feeding slider 230 is slidably installed on the base 210, a slider driving mechanism 231 for driving the powder feeding slider 230 to horizontally reciprocate is installed on the base 210, a powder metering cavity 232 vertically aligned and communicated with the powder discharging port 221 is vertically formed in the powder feeding slider 230, a powder metering rod 250 capable of being in sliding fit with the powder metering cavity 232 is arranged below the powder metering cavity 232, and the powder metering rod 250 is driven by the 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 cushion), 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 one 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 reaction, good working environment adaptability 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 mounted on the base 210, the vertical guide sleeve 213 is detachable and convenient to replace, the powder measuring rod 250 is in sliding fit with the vertical guide sleeve 213, and the powder measuring cavity 232 is aligned with the vertical guide sleeve 213 during feeding, so that friction between the base 210 and the powder measuring rod 250 is avoided, 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.

In an embodiment, referring to fig. 16 to 20, the substrate conveying device 300 includes a vibration tray 310, an inclined slide 320, a substrate separating mechanism 330, and a substrate pushing mechanism 340, a discharge end of the vibration tray 310 is butted with a higher end of the inclined slide 320, a lower end of the inclined slide 320 is butted with an inlet of the substrate separating mechanism 330, and an outlet of the substrate separating mechanism 330 is vertically butted with an execution end of the substrate pushing mechanism 340.

In an embodiment, referring to fig. 16 to 20, the substrate separating mechanism 330 includes a substrate separating base plate 331, a first separating guide plate 332, a second separating guide plate 333, a separating push plate 334, and a substrate separating telescopic driving mechanism 335, the first separating guide plate 332 and the second separating guide plate 333 are symmetrically and fixedly disposed on the substrate separating base plate 331, a horizontal guide groove 336 is formed between the first separating guide plate 332 and the second separating guide plate 333, an inlet of the horizontal guide groove 336 is in contact with a lower end of the inclined slide 320, a fixed end of the substrate separating telescopic driving mechanism 335 is mounted on the substrate separating base plate 331, a telescopic direction of the substrate separating telescopic driving mechanism 335 is perpendicular to a conveying direction of the inclined slide 320, the separating push plate 334 is fixedly mounted on a movable end of the substrate separating telescopic driving mechanism 335, a vertical separating groove 337 capable of accommodating only one substrate is disposed on a side of the separating push plate near the horizontal guide groove 336, the vertical separating groove 337 is in contact with an outlet of the horizontal guide groove 336 when the substrate separating telescopic driving mechanism 335 is retracted, a vertical separating guide hole 338 is disposed on the substrate separating base plate 331, and the vertical separating telescopic driving mechanism 335 is extended out from the vertical guide hole 335. Wherein the vertical separation groove 337 has a U-shaped cross section.

In an embodiment, referring to fig. 16 to 20, a vertical material guiding sleeve 339 is embedded in the vertical material guiding hole 338 (preferably, a countersunk hole), the vertical material guiding sleeve 339 is detachable and convenient to replace, and the substrate falls into the vertical material guiding sleeve 339 from the vertical separating groove 337, so that the inner wall of the vertical material guiding hole 338 is prevented from directly rubbing against the substrate, and the service life of the substrate separating seat plate 331 is prolonged.

In an embodiment, referring to fig. 16 to 20, the separation push plate 334 is in sliding fit with the side surfaces of the first separation guide 332 and the second separation guide 333, and the first separation guide 332 and the second separation guide 333 guide the separation push plate 334 to move horizontally, so that the movement is more stable. The first and second separating guides 332 and 333 may be detachably and fixedly connected to the base separating base plate 331, or may be integrally formed with the base separating base plate 331.

In an embodiment, referring to fig. 16 to 20, the substrate separation telescopic driving mechanism 335 is preferably but not limited to a substrate pushing cylinder, and the cylinder has the advantages of rapid action, fast response, good working environment adaptability, and the like; of course, the substrate separation telescopic driving mechanism 335 may also be an oil cylinder, an electric push rod, or other telescopic driving mechanisms.

In an embodiment, referring to fig. 16 to 20, the substrate pushing mechanism 340 includes a substrate pushing and stretching driving mechanism 341 and an automatic clamping jaw 342, a fixed end of the automatic clamping jaw 342 is installed at a movable end of the substrate pushing and stretching driving mechanism 341, a clamping groove 343 is arranged between two fingers of the automatic clamping jaw 342, that is, half clamping grooves 343 are arranged on opposite surfaces of the two fingers, the clamping groove 343 is vertically opposite to the vertical material guiding hole 338 when the substrate pushing and stretching driving mechanism 341 contracts, and the clamping groove 343 is vertically opposite to the mold cup when the substrate pushing and stretching driving mechanism 341 extends. The upper end of the clamping groove 343 is provided with a bell mouth so as to guide the base body to fall into the clamping groove 343 from the vertical guide sleeve.

In an embodiment, referring to fig. 16 to 20, the substrate pushing and stretching driving mechanism 341 is preferably, but not limited to, a substrate pushing cylinder. The air cylinder has the advantages of rapid action, quick response, good working environment adaptability and the like; of course, the base body pushing and stretching driving mechanism 341 may also be a stretching driving mechanism such as an oil cylinder, an electric push rod, or the like. The automatic clamping jaw 342 is preferably but not limited to a pneumatic clamping jaw, and the pneumatic clamping jaw has the advantages of quick action, quick response, good working environment adaptability and the like; of course, the automatic clamping jaw 342 may be an electric clamping jaw, a hydraulic clamping jaw, or other types.

In an embodiment, referring to fig. 16 to 20, the inclined slide 320, the substrate separating mechanism 330, and the substrate pushing mechanism 340 are all installed on the middle mold plate 130, and the vibration disk 310 and the middle mold plate 130 are all fixedly installed on the frame 101.

The working principle of the substrate conveying device is as follows: firstly, the substrates are automatically arranged and output by the vibrating disk 310, then the substrates are conveyed into the substrate separating mechanism 330 through the inclined slide 320, the substrates are queued and sequentially enter the horizontal guide chute 336 and the vertical separating chute 337, then the substrate separating telescopic driving mechanism 335 drives the separating push plate 334 to extend out, and a single substrate in the vertical separating chute 337 is horizontally moved to the position above the vertical guide sleeve 339, so that the substrate passes through the vertical guide sleeve 339 and then falls into the clamping groove 343 of the automatic clamping jaw 342; the automatic clamping jaw 342 extends the substrate pushing and stretching driving mechanism 341 after clamping the substrate, and pushes the substrate to the upper part of the mold cup 131, specifically to the lower core bar 111; after the upper core rod 111 supports against the substrate, the automatic clamping jaw 342 is loosened, the substrate pushes the telescopic driving mechanism 341 to contract, and the automatic clamping jaw 342 returns to the original position.

As shown in fig. 1 to 20, a control method of an automatic cold press for powder strip matrix press forming includes:

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

controlling the substrate conveying device 300 to work, and pushing the substrate to the upper part of 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 upward to eject the pressed beads out of the mold cup 131.

In an embodiment, the control method includes 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, arch breaking 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, separating the matrix:

the valve driving mechanism 241 pushes the powder valve 240 to close the powder discharge hole 221 (and the powder discharge hole 223); meanwhile, the substrate separation telescopic driving mechanism 335 drives the separation push plate 334 to extend, so that a single substrate in the vertical separation groove 337 is horizontally moved to the position above the vertical material guide sleeve 339, and the substrate passes through the vertical material guide sleeve 339 and then falls into the clamping groove 343 of the automatic clamping jaw 342.

S5, a powder withdrawing metering rod 250:

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

S6, feeding powder:

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 and retracting 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 to 50mm), and then reverses and rises rapidly to a zero position.

S8, feeding powder and returning:

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

S9, conveying a substrate:

after the automatic clamping jaw 342 clamps the substrate, the substrate pushing and stretching driving mechanism 341 extends out to push the substrate to the upper part of the mold cup 131, specifically to the lower core bar 111.

S10, positioning a substrate:

the third telescopic driving mechanism 143 is rapidly extended, and 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, loosening the automatic clamping jaw 342:

the automatic gripper jaw 342 (two fingers) is released.

S12, the base body pushing telescopic driving mechanism 341 retracts and, at the same time, performs pressing:

the base pushing telescopic driving mechanism 341 retracts, the third telescopic driving mechanism 143 slowly extends, the upper core rod 141 and the upper punch 142 slowly descend 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 base without clearance, when the pressure of the pressure sensor 113 on the lower core rod 111 significantly rises (e.g., 50 kg), the first telescopic driving mechanism 112 slowly retracts, the upper punch 142 and the upper core rod 141 synchronously descend by a predetermined distance (e.g., 12 mm), the second telescopic driving mechanism 122 starts to rapidly extend, the lower punch 121 rapidly rises by a predetermined distance (e.g., 30 mm) and then slowly rises by a predetermined distance (e.g., 5 mm), and meanwhile, the upper punch 142 also slowly descends by a predetermined distance (e.g., 7 mm), and the bidirectional pressing is completed.

S13, 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.

S14, bead removing:

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.

S15, 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.

S16, starting the next cycle:

and (5) carrying out the next cycle according to the same steps from S1 to S15, and pushing out the previous pressed bead while feeding the powder.

It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (2)

1. An automated cold press for powder strip matrix press forming, 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 punch 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;

the powder conveying device is arranged beside the mold cup and used for automatically separating powder and pushing the powder into the mold cup; the powder conveying device comprises a base, a powder hopper and a powder feeding sliding block, wherein the powder hopper is fixedly arranged above the base, the bottom of the powder hopper is provided with a powder discharging port, a powder valve controlled to be opened and closed by a valve driving mechanism is arranged at the powder discharging port, the powder feeding sliding block is slidably arranged on the base, a sliding block driving mechanism used for driving the powder feeding sliding block to horizontally reciprocate is arranged on the base, a powder metering cavity which is vertically aligned and communicated with the powder discharging port is vertically arranged on the powder feeding sliding block, 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 move up and down by a metering rod driving mechanism;

the matrix conveying device is arranged beside the mold cup and used for automatically arranging and separating the matrix and pushing the matrix to the upper part of the mold cup; the base body conveying device comprises a vibrating disc, an inclined slideway, a base body separating mechanism and a base body pushing mechanism, wherein the discharge end of the vibrating disc is butted with the higher end of the inclined slideway, the lower end of the inclined slideway is butted with the inlet of the base body separating mechanism, and the outlet of the base body separating mechanism is vertically opposite to the execution end of the base body pushing mechanism;

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; 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, compression springs surrounding the lifting rod are arranged in the spring seat holes, the upper ends of the compression springs abut against the upper template, and the lower ends of the compression springs abut against the pressing plate;

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 for ejecting the pressing plate downwards are fixedly mounted 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 mounted on the top surface of the top plate, and the movable end of the third telescopic driving mechanism penetrates through the top plate and is fixedly connected with the upper die plate;

the cold pressing device further comprises a rack, a platen is arranged at the top of the rack, 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 a 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, a middle template is fixedly installed between the middle parts of the plurality of stand columns, an upper template is slidably installed between the upper parts of the plurality of stand columns, the first lower template and a 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, a second vertical avoiding hole for the synchronous lifting rod to penetrate through is formed in the platen, and a third vertical avoiding hole for the synchronous lifting rod to penetrate through is formed in the first lower template;

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;

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 arranged on the powder hopper, and the lower end of the powder arch breaking rod is aligned with a powder discharge port and a powder metering cavity; the arch breaking rod driving mechanism is a powder arch breaking cylinder;

the bottom end of the powder hopper is welded with a bottom plate, the bottom plate is fixedly arranged on a base, a powder discharge hole communicated with a powder discharge hole is vertically formed in the bottom plate, the fixed end of the valve driving mechanism is arranged above the bottom plate, the powder valve is a gate plate, the gate plate is slidably arranged between the bottom plate and a powder feeding sliding block, the gate plate is fixedly connected with the movable end of the valve driving mechanism, a through hole is formed in the gate plate, the through hole is communicated with the powder discharge hole and a powder metering cavity when powder is discharged, and the gate plate is used for isolating the powder discharge hole and the powder metering cavity when powder is discharged; the metering rod driving mechanism is a powder metering servo electric cylinder;

the base body separating mechanism comprises a base body separating seat plate, a first separating guide plate, a second separating guide plate, a separating push plate and a base body separating telescopic driving mechanism, wherein the first separating guide plate and the second separating guide plate are symmetrically and fixedly arranged on the base body separating seat plate, a horizontal guide groove is formed between the first separating guide plate and the second separating guide plate, the inlet of the horizontal guide groove is butted with the lower end of an inclined slide way, the fixed end of the base body separating telescopic driving mechanism is arranged on the base body separating seat plate, the telescopic direction of the base body separating telescopic driving mechanism is perpendicular to the conveying direction of the inclined slide way, the separating push plate is fixedly arranged on the movable end of the base body separating telescopic driving mechanism, one side, close to the horizontal guide groove, of the separating push plate is provided with a vertical separating groove which can only accommodate one base body, the vertical separating groove is butted with the outlet of the horizontal guide groove when the base body separating telescopic driving mechanism contracts, the base body separating telescopic driving mechanism is provided with a guide hole, and the vertical separating groove is vertically opposite to the vertical guide hole when the base body separating telescopic driving mechanism extends out;

the base member push mechanism includes flexible actuating mechanism of base member propelling movement and automatic clamping jaw, the expansion end at the flexible actuating mechanism of base member propelling movement is installed to the stiff end of automatic clamping jaw, be provided with the centre gripping groove between two fingers of automatic clamping jaw, the centre gripping groove is relative from top to bottom with vertical stock guide when the flexible actuating mechanism of base member propelling movement contracts, the centre gripping groove is relative from top to bottom with the mould cup when the flexible actuating mechanism of base member propelling movement stretches out.

2. A method of controlling an automated cold press for powder strip substrate compaction of claim 1 comprising:

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

controlling the substrate conveying device to work, and pushing the substrate above the mold cup;

controlling a pressing device to work, enabling an upper core rod and an upper punch to descend together, enabling the upper core rod to firstly prop against a substrate and then stop descending, enabling the upper punch to continue descending in place and then continue descending with the upper core rod, enabling the upper core rod to tightly press the substrate on the lower core rod, enabling the lower core rod to synchronously descend together with the upper core rod and the upper punch simultaneously, and feeding the substrate into powder in a die cup; when the upper punch starts to press the powder in the die cup, the lower punch also starts to move upwards at the same speed as the upper punch, and the powder is pressed in two directions under the extrusion of the upper punch and the lower punch; after the powder in the die cup is pressed to a preset height, the upper punch, the lower punch and the lower core rod stop moving, and the pressure is maintained for a preset time, so that the powder after being pressed and formed is fully shaped; and finally, the upper punch, the lower punch and the lower core rod move upwards to eject the pressed beads out of the die cup.

Images