CN219748383U - Ferrite powder one-die multi-cavity die and pressing device - Google Patents

Abstract

The utility model provides a ferrite powder one-die multi-cavity die, which comprises an upper pressing rod, an upper plug part, a lower pressing rod and a lower plug part, wherein the upper pressing rod and the upper plug part are arranged in an upper punching assembly in a sliding manner, the lower pressing rod and the lower plug part are arranged in a lower punching assembly in a sliding manner, the upper plug part and the lower plug part can respectively move along the same direction, each upper plug part and each lower plug part can be independently disassembled relative to the upper pressing rod and the lower pressing rod, the whole cavity die is not required to be disassembled for maintaining a single die cavity in the one-die multi-cavity die, the practicability of other die cavities cannot be influenced by the disassembling of the single die cavity, and the maintenance cost is reduced. The utility model also provides a ferrite powder one-die multi-cavity pressing device, which utilizes the rotating body with the upper rotating disc body and the lower rotating disc body to install one-die multi-cavity die, thereby realizing the use of the one-die multi-cavity die on a rotary press. The rotator drives the multiple groups of upper punch assemblies, lower punch assemblies and forming assemblies to rotate, and each group of multi-cavity molds are rotated for one time to finish the process of pressing powder into products, so that the production efficiency can be greatly improved.

Description

Ferrite powder one-die multi-cavity die and pressing device

Technical Field

The utility model relates to the technical field of ferrite powder molding, in particular to a ferrite powder one-die multi-cavity die and a pressing device.

Background

Ferrite core powder compacting tool set is a kind of supporting equipment who carries out ferrite core powder machine-shaping, and ferrite core powder need use the mould to carry out shaping preparation when carrying out processing, along with the continuous development of science and technology, people are also higher to ferrite core powder compacting tool set's manufacturing process requirement.

Currently, a two-cavity mold or a multi-cavity mold suitable for ferrite powder molding and pressing is mainly suitable for a vertical press, and the multi-cavity mold is fixed in a binding mode, namely, a plurality of molds with single cavity channels are utilized, only one group of punches are installed in each cavity channel, only one product can be produced by pressing each time, and a set of multi-cavity mold is formed by binding and combining through an external structure. When one single-cavity mold has a problem and needs to be adjusted or parts are replaced, the whole multi-cavity mold needs to be adjusted integrally, and the rest single-cavity molds are necessarily affected, so that production is stopped.

Disclosure of Invention

The utility model provides a ferrite powder one-die multi-cavity die and a pressing device, which are used for solving the technical problem that a single die cavity is difficult to dismantle.

The utility model provides a ferrite powder one-die multi-cavity die, which comprises:

the upper punching assembly comprises an upper pressing rod and upper plug parts, wherein the upper pressing rod is provided with upper guide cavities corresponding to the upper plug parts in number, and the upper plug parts are arranged in the upper guide cavities in a sliding manner up and down;

the lower punching assembly is arranged opposite to the upper punching assembly and comprises a lower pressing rod and lower plug parts, lower guide cavities corresponding to the lower plug parts in number are formed in the upper pressing rod, and the lower plug parts are arranged in the lower guide cavities in a sliding manner up and down; the lower plug parts are in one-to-one correspondence with the upper plug parts;

the molding assembly is arranged between the upper pressing rod and comprises a molding female die, a molding cavity is formed in the molding female die, and the position of the molding cavity is opposite to the upper plug part and the lower plug part; the molding cavity is used for containing ferrite powder to be molded, the upper plug part is used for penetrating the upper guide cavity to enter the molding cavity so as to press the ferrite powder, and the lower plug part is used for penetrating the lower guide cavity so as to press the ferrite powder.

In a possible scheme, the upper plug part comprises an upper punch and an upper guide rod, the upper guide rod is arranged in the upper guide cavity in a sliding manner, and the upper punch is connected with one end of the upper guide rod, which is close to the forming female die; one end of the upper punch, which is close to the forming female die, is suitable for entering the forming cavity.

In a possible scheme, the lower plug part comprises a lower punch and a lower guide rod, the lower guide rod is arranged in the lower guide cavity in a sliding manner, and the lower punch is connected to one end of the lower guide rod, which is close to the forming female die; one end of the lower punch, which is close to the forming die, is suitable for entering the forming cavity.

In a possible scheme, one end, far away from the forming die, of the upper punch and one end, far away from the forming die, of the lower punch are provided with flanges, the side wall, close to one end of the forming die, of the upper guide rod and the lower guide rod is provided with threads, an upper nut penetrates through the upper punch to be in threaded connection with the upper guide rod, and the flanges of the upper punch are buckled between the upper nut and the upper guide rod;

a lower nut is threaded through the lower punch with the lower guide rod, and a flange of the lower punch is snapped between the lower nut and the lower guide rod.

In a possible solution, the upper plug part further comprises an upper plug head, the upper plug head being provided at an end of the upper guide rod remote from the forming die; the lower plug part further comprises a lower plug head, and the lower plug head is arranged at one end of the lower guide rod, which is far away from the forming die; and the end, far away from the forming die, of the upper plug head and the lower plug head is provided with an outer end head with a partial cambered surface, and the range of the outer end head exceeds the cross section range of the upper guide cavity and the lower guide cavity.

In a possible scheme, guide structures are arranged in the upper guide cavity and the lower guide cavity, and the guide structures comprise ribs respectively arranged on the outer side walls of the upper guide rod and the lower guide rod and grooves formed on the inner side walls of the upper guide cavity and the lower guide cavity; the convex rib is arranged in the groove in a sliding manner.

The utility model also provides a one-die multi-cavity pressing device for the ferrite powder, which comprises a one-die multi-cavity die for the ferrite powder and

the rotary body comprises an upper rotary disc body, a middle disc body and a lower rotary disc body, wherein the upper rotary disc body is provided with an upper accommodating cavity for mounting an upper pressing rod, the middle disc body is provided with a female die accommodating cavity for mounting a pressing female die, and the lower rotary disc body is provided with a lower accommodating cavity for mounting a lower pressing rod;

the lifting ramp comprises an upper ramp arranged near the upper rotary disc body and a lower ramp arranged near the lower rotary disc body, the upper punch assembly is in sliding connection with the upper ramp, the upper punch assembly approaches the forming assembly under the guidance of the upper ramp, and the upper punch assembly approaches the forming assembly under the guidance of the lower ramp;

and the forming pinch roller is fixedly arranged above the upper rotary disc body, and the upper plug head of the upper punching assembly is extruded downwards when passing through the forming pinch roller.

In a feasible scheme, go up the ramp and fixedly locate go up between the rotary disk body with drive post, go up the holding chamber and be close to offer the drive breach on the lift ramp lateral wall, upward press excellent lateral wall connection and be equipped with the roller, the roller keep away from upward press excellent one end through the drive breach with go up the ramp contact.

In a possible scheme, the lower ramp is arranged below the lower rotary disc body, and a lower plug head of the undershoot assembly is abutted with the lower ramp; and the upper punch assembly passes through a pressing point corresponding to the forming pinch roller, and the distance between the upper ramp and the lower ramp is nearest.

In a possible scheme, the upper pressing rod descends along with the upper ramp before entering the pressing point and ascends after passing through the pressing point; the lower pressing rod ascends along with the upper ramp before passing through the pressing point and continues to ascend after passing through the pressing point, and the lower punch ejects a pressed product from the pressing female die to be higher than the surface of the middle disc body.

According to the ferrite powder one-die multi-cavity die, the upper pressing rod and the upper plug part which are arranged in the upper punching assembly in a sliding manner and the lower pressing rod and the lower plug part which are arranged in the lower punching assembly in a sliding manner can respectively move along the same direction, each upper plug part and each lower plug part can be independently disassembled relative to the upper pressing rod and the lower pressing rod, and the upper plug parts or the lower plug parts in the rest guide cavities are not affected and can still continue to work. Therefore, in the one-die multi-cavity die, the whole cavity die does not need to be removed for maintaining a single die cavity, so that the maintenance difficulty is reduced, and the cost is saved.

Drawings

FIG. 1 is a schematic diagram of a semi-section of a ferrite powder one-die multi-cavity mold;

FIG. 2 is a schematic perspective exploded view of a ferrite powder one-die multi-cavity mold;

FIG. 3 is an overall schematic view of a ferrite powder one-die multi-cavity pressing device;

FIG. 4 is an exploded view of a ferrite powder one-die multi-cavity pressing apparatus;

fig. 5 is a schematic view of the height distribution of the lifting ramp.

Reference numerals illustrate:

100. an upper punch assembly; 200. an undershoot assembly; 300. a molding assembly; 400. a rotating body; 500. lifting ramp; 600. forming a pressing wheel;

110. pressing a rod; 120. A plug-loading part;

111. an upper guide chamber; 112. A shaft roller; 113. A guide structure;

113a, ribs; 113b, grooves;

121. an upper punch; 121a, a flange; 122. an upper guide rod; 123. a nut is arranged; 124. a plug is arranged on the upper plug;

210. pressing down the rod; 220. a lower stopper member; 211. a lower guide chamber;

221. a lower punch; 222. a lower guide rod; 223. a lower nut; 224. a lower plug head; 224a, outer ends;

310. forming a female die; 320. a molding cavity;

410. an upper rotating disc body; 420. a lower rotating disc body; 430. an intermediate tray; 440. a drive column;

411. an upper receiving chamber; 421. a lower accommodating chamber; 431. a female die accommodating cavity; 411a, drive notch;

510. ascending a ramp; 520. descending a ramp; 610. pressing points.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present utility model, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

Currently, a two-cavity mold or a multi-cavity mold suitable for ferrite powder molding and pressing is mainly suitable for a vertical press, and the multi-cavity mold is fixed in a binding mode, if a certain mold cavity has a problem, the whole multi-cavity mold needs to be integrally adjusted, the adjustment is very complicated, and if a certain mold cavity has damage, the whole mold cavity needs to be removed for maintenance, so that the ferrite powder multi-cavity mold with a single mold cavity in the pressing mold can be independently detached is needed.

Example 1

In this embodiment, a ferrite powder one-mold multi-cavity mold is provided, wherein fig. 1 is a schematic semi-sectional view of the ferrite powder one-mold multi-cavity mold, and fig. 2 is a schematic perspective exploded view of the ferrite powder one-mold multi-cavity mold. Referring to fig. 1 and 2, in the present embodiment, the ferrite powder one-mold multi-cavity mold includes an upper punch assembly 100, a lower punch assembly 200, and a molding assembly 300.

The upper punch assembly 100 comprises an upper pressing rod 110 and upper plug members 120, wherein the upper pressing rod 110 is provided with upper guide cavities 111 corresponding to the upper plug members 120 in number, a plurality of upper plug members 120 are arranged in the upper guide cavities 111 in a sliding manner up and down, and the upper punch assembly 100 is used for providing a lower plug member 220 above the forming assembly 300, wherein the lower plug member 220 can provide lower pressure for ferrite powder in the forming assembly 300.

The undershoot assembly 200 comprises a lower guide cavity 211 which is arranged below the undershoot assembly 100 and comprises a lower pressing rod 210 and lower plug parts 220, wherein the upper pressing rod 110 is provided with a plurality of lower plug parts 220 which are arranged in a sliding manner in the lower guide cavity 211; the lower plug member 220 corresponds to the upper plug member 120 in position one by one; the upper punch assembly 100 is used to provide a lower plug member 220 above the forming assembly 300 that is capable of providing a downward pressure to the ferrite powder within the forming assembly 300.

And the molding assembly 300 is arranged between the upper punch assembly 100 and the lower punch assembly 200, and comprises a molding female die 310 for molding a product and a molding cavity 320 for accommodating ferrite powder and providing compaction space for the ferrite powder, wherein the molding cavity 320 is positioned in the molding female die 310, and the molding cavity 320 is positioned opposite to the upper plug part 120 and the lower plug part 220.

When the upper plug member 120 in the upper punch assembly 100 is pressed downward in the upper guide chamber 111 and the lower plug member 220 in the lower punch assembly 200 is pressed upward in the lower guide chamber 211, the ferrite powder in the molding die 310 is bidirectionally forced and extruded into a product of a predetermined shape, thereby completing the press molding. The two sides of the molding female die 310 are communicated, the upper plug part 120 is withdrawn from the molding cavity 320, and the lower plug part 220 continues to move upwards, so that the product can be pushed out of the molding cavity 320, and the discharging of the product is completed.

Since the upper press bar 110 may be provided with a plurality of upper guide cavities 111 and the lower press bar 210 may be provided with a plurality of lower guide cavities 211, the upper stopper 120, the lower stopper 220, and the pressing die may be correspondingly provided with a plurality of upper guide cavities. When the parts in the single guide cavity are in a problem and need to be maintained, and the punches or the corresponding pressing dies of different specifications need to be replaced, the parts can be maintained and replaced aiming at the single guide cavity and the pressing dies, the normal work of other parts can not be influenced, and meanwhile, the manufacture of various products in the single die can be realized.

The iron oxide powder one-die multi-cavity mold provided in this embodiment, the upper pressing rod 110 and the upper plug member 120 which are slidably disposed in the upper punch assembly 100 and the lower pressing rod 210 and the lower plug member 220 which are slidably disposed in the lower punch assembly 200 may move along the same direction, and each of the upper plug member 120 and the lower plug member 220 may be detached separately from the upper pressing rod 110 and the lower pressing rod 210, so that the entire cavity mold does not need to be detached for maintaining a single cavity in the one-die multi-cavity mold, and the detachment of the single cavity does not affect the practicality of other cavities, thereby being beneficial to reducing maintenance costs. Each of the upper pressing rod 110 and the lower pressing rod 210 is provided with a plurality of upper plug members 120 and lower plug members 220, and the corresponding molding assembly 300 is positioned between the upper punch assembly 100 and the lower punch assembly 200, so that the ferrite powder in the molding die 310 is pressed to form a product under the extrusion of the upper plug members 220 and the lower plug members 220, and the production efficiency of the product can be improved.

As shown in fig. 1 and 2, the upper plug member 120 in this embodiment includes an upper punch 121 and an upper guide rod 122, the upper guide rod 122 is slidably disposed in the upper guide cavity 111, and the upper punch 121 is connected to an end of the upper guide rod 122 adjacent to the molding assembly 300; the end of the upper punch 121 near the forming die 310 is adapted to enter the forming cavity 320. The lower end of the upper punch 121 has a smaller cross section than the upper guide chamber 111, and may be partially received in the upper guide chamber 111 or may be received in the molding cavity 320.

While the lower plug member 220 includes a lower punch 221 and a lower guide rod 222, the lower guide rod 222 is slidably disposed in the lower guide cavity 211, and the lower punch 221 is connected to an end of the lower guide rod 222 near the molding assembly 300; the end of the lower punch 221 adjacent the forming die 310 is adapted to enter the forming cavity 320. Similarly, the upper end of the lower punch 221 has a smaller cross section than the lower guide cavity 211, and may be partially received in the lower guide cavity 211 or may be received in the molding cavity 320. After the lower punch 221 enters the forming cavity 320 from the bottom, the lower punch can support the ferrite powder in the forming cavity 320, so that not only can upward extrusion force be applied to the ferrite powder, but also the pressed and formed product can be pushed out of the forming cavity 320 after the upper punch 121 is withdrawn from the forming cavity 320.

As shown in fig. 1 and 2, the ends of the upper punch 121 and the lower punch 221, which are far away from the forming die 310, are provided with flanges 121a, the side walls of the upper guide rod 122 and the lower guide rod 222, which are near to the forming die 310, are provided with threads, an upper nut 123 is threaded with the upper guide rod 122 through the upper punch 121, and the flanges 121a of the upper punch 121 are buckled between the upper nut 123 and the upper guide rod 122; the lower nut 223 is screwed to the lower guide bar 222 through the lower punch 221, and the flange 121a of the lower punch 221 is engaged between the lower nut 223 and the lower guide bar 222. A through hole is provided in the middle of each of the upper and lower nuts 123 and 223, and each of the upper and lower punches 121 and 221 can pass through the through hole. Since the cross section of the upper punch 121 and the lower punch 221 is smaller than the upper guide rod 122 and the lower guide rod 222, the flange 121a expands the cross section of the upper punch 121 and the lower punch 221 so that the upper nut 123 and the lower nut 223 can connect the upper punch 121 and the lower punch 221 with the upper guide rod 122 and the lower guide rod 222 using structural limits, thereby providing a linkage basis for the guide rod to control the position of the punches.

As shown in fig. 1 and 2, the upper plug member 120 further includes an upper plug 124, the lower plug member 220 further includes a lower plug 224, the upper plug 124 and the lower plug 224 are respectively disposed at one ends of the upper guide rod 122 and the lower guide rod 222 away from the molding die 310, and one ends of the upper plug 124 and the lower plug 224 away from the molding die 310 are respectively provided with an outer end 224a having a partial arc surface, and the range of the outer end 224a exceeds the cross-sectional range of the upper guide cavity 111 and the lower guide cavity 211.

The upper plug 124 may transmit a downward pressure to the lower upper guide rod 122 when receiving an external downward pressure, and further to the upper punch 121, thereby applying a downward pressure to the ferrite powder in the molding die 310. Similarly, when an external pressing force is applied to the lower plug 224, the pressing force is transmitted to the lower guide rod 222 below, and then to the lower punch 221, so that the pressing force is applied to the ferrite powder in the molding die 310. Therefore, the press forming of the product can be completed as long as the members contacting the upper plug 124 and the lower plug 224 are provided at night outside the die and the downward and upward pushing forces can be simultaneously applied to the upper plug 124 and the lower plug 224. The upper plug 124 and the upper guide rod 122 may be fixedly connected or may be only in contact with each other. The connection between the lower plug 224 and the lower guide 222 is known in the same manner.

Meanwhile, since the outer ends 224a of the upper and lower plugs 124 and 224 are extended beyond the upper and lower guide chambers 111 and 211, the upper and lower plugs 124 and 224 and the upper and lower press bars 110 and 210 may form a limit, preventing relative movement therebetween, and thus, the traveling distances of the upper and lower punches 121 and 221 during the pressing process may be adjusted, thereby controlling the pressing effect of the product.

As shown in fig. 2, the upper guide cavity 111 and the lower guide cavity 211 are provided with guide structures 113, which comprise ribs 113a respectively arranged on the outer side walls of the upper guide rod 122 and the lower guide rod 222, and grooves 113b respectively arranged on the inner side walls of the upper guide cavity 111 and the lower guide cavity 211; the rib 113a is slidably disposed in the groove 113 b.

The guide structure 113 is used for ensuring that the relative sliding between the guide rod and the guide cavity is kept stable, and preventing the guide rod from rotating in the guide cavity, so that the direction of the upper punch 121 is deviated, and the quality of products is affected. The grooves 113b and the ribs 113a in this embodiment are symmetrically distributed along the center of the guide cavity and the guide rod. The grooves 113b have upper and lower end surfaces, and are in contact with the upper and lower end surfaces of the ribs 113a, thereby limiting the stroke of the guide bar.

As shown in fig. 2, in this embodiment, a single one-mold multi-cavity mold has an upper press bar 110, a molding die 310 and a lower press bar 210, and four upper guide cavities 111 and four guide cavities are formed in each upper press bar 110 and each lower press bar 210. Each group of guide cavities is internally provided with an upper plug part 120 and a lower plug part 220, and the corresponding forming female die 310 is provided with four forming cavities 320. Four products can be discharged from a single die at a time, and different dies and punches can be configured for each molding cavity 320 as needed to achieve the output of different products.

Example 2

The embodiment provides a ferrite powder one-die multi-cavity pressing device, and fig. 3 is an overall schematic diagram of the ferrite powder one-die multi-cavity pressing device; FIG. 4 is an exploded view of a ferrite powder one-die multi-cavity pressing apparatus; fig. 5 is a schematic view of the height distribution of the lifting ramp 500. Referring to fig. 3 to 5, the ferrite powder one-mold multi-cavity pressing apparatus of the present embodiment includes a rotating body 400, a lifting ramp 500, a forming press wheel 600, and the ferrite powder one-mold multi-cavity mold of embodiment 1.

The rotary body 400 is used for installing a ferrite powder one-die multi-cavity die and driving the ferrite powder one-die multi-cavity die to integrally rotate relative to the device, so as to form an annular processing station. The rotary body 400 includes an upper rotary disk 410 adapted to mount the upper punch assembly 100, a middle disk 430 adapted to mount the forming assembly 300, and a lower rotary disk 420 adapted to mount the lower punch assembly 200; the upper rotary disk 410, the middle disk 430 and the lower rotary disk 420 are all connected to the same driving column 440, and the three are kept relatively stationary, and the driving column 440 drives the three to rotate.

As shown in fig. 3, the upper punch assembly 100 and the lower punch assembly 200 can move up and down relative to the upper rotary disc 410 and the lower rotary disc 420, and the lifting ramp 500 is used for guiding the lifting movement of the lower punch assembly 200 of the upper punch assembly 100 during the rotation of the rotary body 400 with the mold. The lifting ramp 500 includes an upper ramp 510 disposed near the upper rotating disk 410, and a lower ramp 520 disposed near the lower rotating disk 420, wherein the upper punch assembly 100 is slidably connected to the upper ramp 510, the upper punch assembly 100 approaches the forming assembly 300 under the guidance of the upper ramp 510, and the upper punch assembly 100 approaches the forming assembly 300 under the guidance of the lower ramp 520.

In the process of moving the upper punch assembly 100, the pressing of the intermediate ferrite powder is accomplished by the external downward pressure, so that the forming pinch roller 600 is fixedly provided above the upper rotary disk body 410, and the upper plug 124 of the upper punch assembly 100 is pressed downward while passing through the forming pinch roller 600, as shown in fig. 3.

As shown in fig. 3 and 4, the upper ramp 510 is fixedly disposed between the upper rotary disc 410 and the driving post 440, the upper rotary disc 410 is provided with an upper accommodating cavity 411 adapted to accommodate the upper pressing rod 110, a side wall of the upper accommodating cavity 411, which is close to the lifting ramp 500, is provided with a driving notch 411a, the side wall of the upper pressing rod 110 is connected with a shaft roller 112, and one end of the shaft roller 112, which is far away from the upper pressing rod 110, is contacted with the upper ramp 510 through the driving notch 411 a. The end of the shaft roller 112 contacting the upper surface of the upper ramp 510 is provided with a roller, and rolls along the upper ramp 510 during the rotation of the upper rotary disk 410 with the upper press bar 110, so that the upper press bar 110 and the inner upper stopper 120 are changed in height along with the upper ramp 510.

Since the upper stopper 120 inside the upper press rod 110 is also slidable with respect to the upper guide chamber 111, the end of the guide structure 113 between the upper guide chamber 111 and the upper stopper 120 also serves to prevent the upper stopper 120 from slipping off. And when the upper punch 121 contacts with ferrite powder in the cavity 320, the upper punch 121 and the upper guide rod 122 connected with the upper punch are limited at the lower end and prevent falling.

As shown in fig. 3 and 4, the lower rotary disk 420 in this embodiment is provided with a lower accommodating cavity 421 adapted to accommodate the pressing rod 210; the lower ramp 520 is disposed below the lower rotary disk 420, and the lower plug 224 of the undershoot assembly 200 abuts the lower ramp 520. Since the undershoot assembly 200 can automatically descend by self gravity, and the height control of the undershoot assembly 200 by the downhill path 520 is mainly embodied in the control of the ascending height of the undershoot assembly 200, in this embodiment, the downhill path 520 is disposed below the lower rotary disk 420, the lower plug 224 of the undershoot assembly 200 abuts against the downhill path 520, and the position of the undershoot assembly 200 is defined by the lifting distance of the lower plug 224 by the downhill path 520. And the outer end 224a of the lower plug 224 is wider than the lower guide cavity 211, so that the lower plug 224 can drive the lower push rod 210 to move upward as a whole when contacting the lower push rod 210.

As shown in fig. 3 to 5, the contact position of the upper plug 124 with the forming pinch roller 600 is set as a pressing point 610, and the upper ramp 510 is closest to the lower ramp 520 through the corresponding pressing point 610 of the forming pinch roller 600 in the upper punch assembly 100. When the rotary body 400 carries the die to pass the pressing point 610, due to the closest distance between the upper ramp 510 and the lower ramp 520, the upper punch 121 and the lower punch 221 are closest to each other in the forming cavity 320, a certain pressing force is formed on the intermediate ferrite powder, and a certain distance is formed between the upper plug head 124 and the upper pressing rod 110, so that a travel space is left for the upper guide rod 122 by the guide structure 113 between the upper guide rod 122 and the upper guide cavity 111. As shown in fig. 1, when the upper plug 124 passes through the forming press wheel 600, the formed press wheel 600 continues to press down, the generated pressing force is transmitted to the ferrite powder in the forming cavity 320 through the upper plug component 120, and the ferrite powder continues to apply a pressing force to the lower punch 221, and the lower guide rod 222, the lower plug 224 and the lower ramp 520 below the lower punch 221 generate a reaction force, so that the ferrite powder is extruded up and down, and finally the product is formed.

As shown in fig. 4, the middle tray 430 in this embodiment is further provided with a cavity 431 adapted to accommodate the molding cavity 310. The height position of the forming die 310 in the die accommodating cavity 431 is not changed, and the upper surface of the forming die 310 is flush with the upper surface of the middle tray 430, so that products can be conveniently removed from the surface of the middle tray 430 after being ejected from the forming cavity 320, and a basis is provided for automatic discharging.

Since the rotary body 400 of the pressing device in this embodiment is provided with a plurality of molds and forms an annular processing station, the molds need to complete the stages of filling, merging, pressing, demolding, and discharging in a single rotation, and the above 5 stages are circulated repeatedly to achieve non-intermittent production of the pressing device. This requires that lifting ramp 500 be able to accurately control the height of the position of upper punch assembly 100 and lower punch assembly 200 at each stage to cycle through the 5 stages described above. Thus, in fig. 5 of the present embodiment, the annular upper ramp 510 and lower ramp 520 are unfolded to a planar state, and the two gradient lines distributed up and down show the height graduations of the upper ramp 510 and lower ramp 520, and the corresponding position distances of the two, and the movement trend of the upper punch 121 and lower punch 221 is marked in the figure with the aid of the arrow and the short horizontal line.

As shown in fig. 5, in the filling stage, the upper ramp 510 is in the high position, the lower ramp 520 is in the low position, at which the distance between the upper punch 121 and the lower punch 221 is furthest, and the upper punch 121 has been nearly separated from the forming cavity 320, and the lower punch 221 seals the lower end of the forming cavity 320. The molding cavity 320 is filled through the filling port.

Entering the merge stage, the upper ramp 510 presents a downward trend, with the upper punch 121 approaching the forming cavity 320 as the upper press bar 110 descends. At the same time, the height of the lower ramp 520 also begins to rise, pushing the lower plug member 220 upward, and the lower punch 221 gradually rises;

when the upper punch 121 contacts the ferrite powder to start to enter the pressing stage, the upper ramp 510 enters the lower position, the upper pressing rod 110 also reaches the lowest height along with the lower ramp, the lower ramp 520 continues to be in an ascending trend, the lower punch 221 continues to ascend to push the ferrite powder to rise, the upper punch 121 and the upper punch 121 start to gradually press the ferrite powder, the upper punch 121 starts to ascend gradually under the pushing force, and the upper guide rod 122 is pushed to enable the upper plug 124 to be higher than the upper surface of the upper pressing rod 110 by a distance.

At the end of the pressing stage, i.e., the pressing point 610, the upper plug 124 is pressed down by the forming press wheel 600 a distance, the upper punch 121 is pressed down and the lower punch 221 is pressed up to form a product, and then the demolding stage is performed.

In the demolding stage, both the upper ramp 510 and the lower ramp 520 are in an ascending trend, but the ascending speed of the upper ramp 510 is higher than that of the lower ramp 520, the ascending speed of the upper pressing rod 110 is required to be faster than that of the lower pressing rod 210, the upper punch 121 is pulled out of the forming cavity 320, the lower pressing rod 210 is lifted with the lower punch 221, and the product is gradually pushed out of the forming cavity 320 until the lower surface of the product is flush with the upper surface of the middle tray 430, and the discharging stage is performed.

In the ejection phase, the upper ramp 510 is in a raised position, leaving the upper punch 121 away from the forming cavity 320. The down ramp 520 reaches a high position to expose the product on the surface of the intermediate tray 430, and at this time, the forming die 310 passes through a discharge baffle disposed near the intermediate tray 430, and the discharge baffle scoops the product out of the upper port of the forming cavity 320, so that the product gradually slides outwards along the discharge baffle on the surface of the intermediate tray 430. When the product is scooped out of the forming cavity 320, the downslope 520 is provided with a cliff step from high to low, allowing the undershoot assembly 200 to drop down and then enter the initial filling stage.

One working cycle of the pressing device is completed.

The ferrite powder one-die multi-cavity pressing device provided by the embodiment utilizes the rotating body 400 with the upper rotating disc body 410 and the lower rotating disc body 420 to install one-die multi-cavity die, so that the use of the one-die multi-cavity die on a rotary press is realized. The rotating body 400 drives the upper punch assembly 100, the lower punch assembly 200 and the forming assembly 300 to rotate, and each group of one-die multi-cavity dies are rotated to finish the process of pressing powder into products, so that the production efficiency can be greatly improved. Meanwhile, when a single or a plurality of die cavities have problems and need to be maintained, the die cavities can be independently removed, the continuous work of other die cavities in the pressing device is not influenced, the maintenance difficulty is simplified, and the influence of maintenance on the production progress is reduced.

It is to be understood that, based on the several embodiments provided in the present utility model, those skilled in the art may combine, split, reorganize, etc. the embodiments of the present utility model to obtain other embodiments, which all do not exceed the protection scope of the present utility model.

The foregoing detailed description of the utility model has been presented for purposes of illustration and description, and it should be understood that the foregoing is by way of illustration and description only, and is not intended to limit the scope of the utility model.

Claims (10)

1. A ferrite powder one-die multi-cavity die, which is characterized by comprising:

the upper punching assembly (100) comprises an upper pressing rod (110) and upper plug parts (120), wherein the upper pressing rod (110) is provided with upper guide cavities (111) corresponding to the upper plug parts (120), and the upper plug parts (120) are arranged in the upper guide cavities (111) in a sliding manner up and down;

the lower punch assembly (200) is arranged opposite to the upper punch assembly (100), the lower punch assembly (200) comprises lower pressing rods (210) and lower plug parts (220), lower guide cavities (211) corresponding to the lower plug parts (220) in number are formed in the upper pressing rods (110), and the lower plug parts (220) are arranged in the lower guide cavities (211) in a sliding mode up and down; the lower plug parts (220) are in one-to-one correspondence with the upper plug parts (120);

the molding assembly (300) is arranged between the upper pressing rod (110) and the upper pressing rod (110), the molding assembly (300) comprises a molding female die (310), a molding cavity (320) is formed in the molding female die (310), and the molding cavity (320) is opposite to the upper plug part (120) and the lower plug part (220); the molding cavity (320) is used for containing ferrite powder to be molded, the upper plug part (120) is used for penetrating the upper guide cavity (111) to enter the molding cavity (320), and the lower plug part (220) is used for penetrating the lower guide cavity (211) so as to press the ferrite powder.

2. The ferrite powder one-die multi-cavity die according to claim 1, wherein the upper plug part (120) comprises an upper punch (121) and an upper guide rod (122), the upper guide rod (122) is slidably arranged in the upper guide cavity (111), and the upper punch (121) is connected with one end, close to the forming female die (310), of the upper guide rod (122); one end of the upper punch (121) close to the forming die (310) is suitable for entering the forming cavity (320).

3. The ferrite powder one-die multi-cavity die according to claim 2, wherein the lower plug part (220) comprises a lower punch (221) and a lower guide rod (222), the lower guide rod (222) is slidably arranged in the lower guide cavity (211), and the lower punch (221) is connected to one end of the lower guide rod (222) close to the forming die (310); one end of the lower punch (221) close to the forming die (310) is suitable for entering the forming cavity (320).

4. A ferrite powder one-die multi-cavity die according to claim 3, wherein one end of the upper punch (121) and one end of the lower punch (221) far away from the forming die (310) are respectively provided with a flange (121 a), the side wall, close to one end of the forming die (310), of the upper guide rod (122) and one end of the lower guide rod (222) are respectively provided with threads, an upper nut (123) penetrates through the upper punch (121) to be in threaded connection with the upper guide rod (122), and the flange (121 a) of the upper punch (121) is buckled between the upper nut (123) and the upper guide rod (122);

a lower nut (223) is threaded with the lower guide rod (222) through the lower punch (221), and a flange (121 a) of the lower punch (221) is buckled between the lower nut (223) and the lower guide rod (222).

5. A ferrite powder one-die multi-cavity mold according to claim 3, wherein the upper plug part (120) further comprises an upper plug head (124), the upper plug head (124) being provided at an end of the upper guide rod (122) remote from the molding die (310); the lower plug part (220) further comprises a lower plug head (224), and the lower plug head (224) is arranged at one end of the lower guide rod (222) away from the forming die (310); and one end of the upper plug head (124) and one end of the lower plug head (224) far away from the forming die (310) are respectively provided with an outer end head (221 a) with a partial cambered surface, and the range of the outer end head (221 a) exceeds the cross section range of the upper guide cavity (111) and the lower guide cavity (211).

6. The ferrite powder one-die multi-cavity mold according to any one of claims 3 to 5, wherein guide structures (113) are arranged in the upper guide cavity (111) and the lower guide cavity (211), and the guide structures (113) comprise ribs (113 a) respectively arranged on the outer side walls of the upper guide rod (122) and the lower guide rod (222), and grooves (113 b) respectively arranged on the inner side walls of the upper guide cavity (111) and the lower guide cavity (211); the convex rib (113 a) is arranged in the groove (113 b) in a sliding mode.

7. A ferrite powder one-die multi-cavity pressing device, characterized by comprising a rotating body (400) and at least one ferrite powder one-die multi-cavity die as claimed in any one of claims 1 to 6;

the rotary body (400) comprises an upper rotary disc body (410), a middle disc body (430) and a lower rotary disc body (420) which are sequentially arranged in the height direction, an upper punching component (100) of the ferrite powder multi-cavity die is arranged in an upper accommodating cavity (411) of the upper rotary disc body (410), a lower punching component (200) of the ferrite powder multi-cavity die is arranged in a lower accommodating cavity (421) of the lower rotary disc body (420), and a forming component (300) of the ferrite powder multi-cavity die is arranged in a female accommodating cavity (431) of the middle disc body (430).

8. The ferrite powder one-die multi-cavity pressing device according to claim 7, wherein: still include lift ramp (500), lift ramp (500) are including locating last ramp (510) of rotating disk body (410) one side, and locate down ramp (520) of rotating disk body (420) one side down, upper punch subassembly (100) with ramp (510) sliding connection, upper punch subassembly (100) are in under the guide of ramp (510) to shaping subassembly (300) are close to, upper punch subassembly (100) are in under the guide of ramp (520) down shaping subassembly (300) are close to.

9. The ferrite powder one-die multi-cavity pressing device according to claim 8, wherein: the upper ramp (510) is fixedly arranged between the upper rotary disc body (410) and the driving column (440), a driving notch (411 a) is formed in a side wall of the upper accommodating cavity (411) close to the upper ramp (510), a shaft roller (112) is connected with the side wall of the upper pressing rod (110), and one end, far away from the upper pressing rod (110), of the shaft roller (112) is contacted with the upper ramp (510) through the driving notch (411 a).

10. The ferrite powder one-die multi-cavity pressing device according to claim 8, wherein: the upper blanking device further comprises a forming pinch roller (600), wherein the forming pinch roller (600) is fixedly arranged above the upper rotary disc body (410), and an upper plug head (124) of the upper punching assembly (100) is extruded downwards when passing through the forming pinch roller (600);

the lower ramp (520) is arranged below the lower rotary disc body (420), and a lower plug head (224) of the undershoot assembly (200) is abutted with the lower ramp (520); at a position where the molding press wheel (600) is opposite to the upper ramp (510) and the lower ramp (520), a distance between the upper ramp (510) and the lower ramp (520) is nearest.