CN215377103U - Pressing tool for powder magnetic core - Google Patents
Pressing tool for powder magnetic core Download PDFInfo
- Publication number
- CN215377103U CN215377103U CN202121190345.XU CN202121190345U CN215377103U CN 215377103 U CN215377103 U CN 215377103U CN 202121190345 U CN202121190345 U CN 202121190345U CN 215377103 U CN215377103 U CN 215377103U
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- sliding block
- magnetic core
- powder magnetic
- sliding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Powder Metallurgy (AREA)
Abstract
The utility model discloses a pressing tool for a powder magnetic core, which comprises a platen, an upper die and a lower die, wherein the upper end wall and the lower end wall of the platen are respectively provided with a cross beam, the cross beam at the upper end is provided with an upper hydraulic cylinder, the output end of the upper hydraulic cylinder penetrates through the cross beam and is fixedly provided with an upper sliding block, the cross beam at the lower end is provided with a lower hydraulic cylinder, the output end of the lower hydraulic cylinder penetrates through the cross beam and is fixedly provided with a lower sliding block, the surface of the platen and positioned between the cross beams are provided with sliding rails, the surfaces of the upper sliding block and the lower sliding block, which are close to the platen, are respectively provided with a sliding groove, the surfaces of the upper sliding block and the lower sliding block, which are close to each other, are respectively provided with a groove, the utility model adopts a double-stamping mode to enable the upper die and the lower die to simultaneously move towards the mutual direction for extrusion operation, so that the upper stress and the lower stress of the powder magnetic core are consistent, the internal density of the material is more uniform, and cracks are prevented.
Description
Technical Field
The utility model relates to the technical field of pressing powder magnetic cores, in particular to a pressing tool for a powder magnetic core.
Background
At present, in the production process of a powder magnetic core, a granulated powder having a soft magnetic powder and an insulating binder is compressed and molded to obtain a molded body, and a specific molding process is between powder preparation and nitrogen kiln sintering, and is a key process of quality control of the magnetic core. The main task of the forming process is to press the granulated powder of the soft magnetic powder and the insulating binding material into the required qualified powder magnetic core blank through a pressing tool, and the quality of the powder magnetic core blank directly determines the quality and the qualification rate of the final product, so that each powder magnetic core manufacturer takes the quality of the powder magnetic core blank in the forming process as a key control link. The quality control of the forming process mainly comprises three factors of forming, namely the size, the weight and the density of a powder magnetic core blank, and the appearance defects of cracking, layering and burrs of the blank need to be controlled.
The earliest pressing tool is composed of a one-way punching driving structure, an upper die moves up and down to press granular materials into a required shape, the machine is called a single-punching machine, a lower die is fixed, only the upper die moves to press, and due to the fact that the upper die and the lower die are not uniformly stressed, the problems that the density inside a powder pressing magnetic core is not uniform, cracks are prone to being generated and the like are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pressing tool for a powder magnetic core, which aims to solve the problems that the density in the powder magnetic core is not uniform and cracking is easy to generate due to inconsistent up and down stress caused by the fact that a lower die is fixed and only an upper die moves for pressurization in the earliest single punching machine provided in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: a pressing tool for a powder magnetic core comprises a bedplate, an upper die and a lower die, wherein the upper end wall and the lower end wall of the bedplate are respectively provided with a cross beam, the cross beam at the upper end is provided with an upper pressure hydraulic cylinder, the output end of the upper hydraulic cylinder penetrates through the beam at the upper side and is fixedly provided with an upper sliding block, the beam at the lower end is provided with a lower hydraulic cylinder, the output end of the downward-pressing hydraulic cylinder penetrates through the cross beam on the lower side and is fixedly provided with a lower sliding block, a sliding rail is arranged on the surface of the bedplate and between the cross beams, the surfaces of the upper sliding block and the lower sliding block close to the bedplate are both provided with a sliding chute, the upper sliding block and the lower sliding block are both connected on the sliding rail in a sliding way through the sliding chute, the surfaces of the upper sliding block and the lower sliding block which are close to each other are provided with grooves, the grooves are internally provided with buffer mechanisms, the upper die is arranged on a buffer mechanism connected with the upper sliding block, and the lower die is arranged on a buffer mechanism connected with the lower sliding block.
Preferably, buffer gear includes spring buffer and clamp plate, spring buffer sets up on the inside surface of recess, spring buffer's buffering end and clamp plate fixed connection, be equipped with the direction lug on the terminal surface of clamp plate, the inside wall of recess is equipped with the guide way, direction lug sliding connection is in the guide way, the surface that spring buffer was kept away from to the clamp plate respectively with last mould and bed die fixed connection.
Preferably, spring thimbles are arranged on the beam on one sides of the upper hydraulic cylinder and the lower hydraulic cylinder.
Preferably, the two side walls of the bedplate are symmetrically provided with supporting frames.
Preferably, the stroke of the output end of the upper hydraulic cylinder is larger than that of the output end of the lower hydraulic cylinder.
Preferably, the cross section of the upper sliding block and the cross section of the lower sliding block are the same in size and shape.
Preferably, the slide rail is provided with two.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a suppression frock of dust core, can play the fixed effect of support to last pneumatic cylinder and lower pneumatic cylinder through the crossbeam on the platen, sets up through the cooperation of spout and slide rail, can make top shoe and lower slider slide on the platen, prevents that top shoe and lower slider from taking place to vibrate in the motion process to take place the skew phenomenon, through recess and buffer gear's cooperation setting, can play the cushioning effect to top die and bed die on the clamp plate. When the powder magnetic core needs to be manufactured, a mixture of soft magnetic powder and granulation powder of an insulating binding material is placed into a lower die, an upper pressure hydraulic cylinder and a lower pressure hydraulic cylinder are started simultaneously, an upper die block and a lower die block move towards the mutually approaching direction along a slide rail simultaneously, the upper die block and the lower die block are extruded mutually to press the mixture into the powder magnetic core after reaching a certain position, because the upper die block and the lower die block instantaneously contact and press the mixture under the control of the upper pressure hydraulic cylinder and the lower pressure hydraulic cylinder in the pressing process, the phenomenon of uneven density inside the mixture can be caused due to the excessively fast pressing speed, the upper die block and the lower die block on a pressing plate can be buffered through a spring buffer, the pressing plate can be prevented from deviating through the matching arrangement of a guide lug and a guide groove, the quality of the powder magnetic core is influenced, and the upper die block and the lower die block can be prevented from impacting on a cross beam through a spring thimble, the upper die and the lower die move towards the mutual direction simultaneously to perform extrusion operation by adopting a double-stamping mode, so that the upper and lower stress of the powder magnetic core is consistent, the internal density of the powder magnetic core is more uniform, and cracks are prevented from being generated.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is an enlarged view of the plane A in FIG. 1;
FIG. 3 is a schematic sectional view showing an upper slider in embodiment 1 of the present invention;
FIG. 4 is a schematic view of the structure of the sliding chute and the sliding rail of the present invention;
fig. 5 is a schematic cross-sectional view of an upper slider in embodiment 2 of the present invention.
In the figure: 1-platen, 2-upper die, 3-lower die, 4-beam, 5-upper pressure hydraulic cylinder, 6-upper slide block, 7-lower pressure hydraulic cylinder, 8-lower slide block, 9-slide rail, 10-slide groove, 11-groove, 12-buffer mechanism, 121-spring buffer, 122-press plate, 123-guide projection, 124-guide groove, 125-rubber buffer, 13-spring thimble and 14-support frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-4, the present invention provides a technical solution: a pressing tool for a powder magnetic core comprises a platen 1, an upper die 2 and a lower die 3, wherein cross beams 4 are arranged on the upper end wall and the lower end wall of the platen 1, an upper pressure hydraulic cylinder 5 is arranged on the cross beam 4 at the upper end, the output end of the upper pressure hydraulic cylinder 5 penetrates through the cross beam 4 at the upper side and is fixedly provided with an upper sliding block 6, a lower pressure hydraulic cylinder 7 is arranged on the cross beam 4 at the lower end, the upper pressure hydraulic cylinder 5 and the lower pressure hydraulic cylinder 7 can be supported and fixed through the cross beam 4 on the platen 1, the output end of the lower pressure hydraulic cylinder 7 penetrates through the cross beam 4 at the lower side and is fixedly provided with a lower sliding block 8, a sliding rail 9 is arranged on the surface of the platen 1 and between the cross beams 4, sliding grooves 10 are arranged on the surfaces, close to the platen 1, of the upper sliding block 6 and the lower sliding block 8 are both connected on the sliding rail 9 through the sliding grooves 10 and are arranged through the matching of the sliding grooves 10 and the sliding rail 9, prevent that top shoe 6 and lower slider 8 from taking place to vibrate in the motion process to take place the skew phenomenon, the face that top shoe 6 and lower slider 8 are close to each other all is equipped with recess 11, be equipped with buffer gear 12 in the recess 11, top die 2 sets up on buffer gear 12 be connected with top shoe 6, lower die 3 sets up on buffer gear 12 be connected with lower slider 8.
Specifically, the damper mechanism 12 includes a spring damper 121 and a pressure plate 122, the spring damper 121 is disposed on an inner surface of the recess 11, the buffering end of the spring buffer 121 is fixedly connected with the pressing plate 122, the end surface of the pressing plate 122 is provided with a guide projection 123, the inner side wall of the groove 11 is provided with a guide groove 124, the guide projection 123 is slidably connected in the guide groove 124, and through the matching arrangement of the guide projection 123 and the guide groove 124, the pressure plate 122 is prevented from being deviated, and the surface of the pressure plate 122 far from the spring damper 121 is fixedly connected with the upper mold 2 and the lower mold 3, respectively, which may cause the density unevenness inside the mixture due to the excessively fast pressing speed, the spring damper 121 can buffer the upper mold and the lower mold on the pressing plate, and the spring damper 121 can buffer the upper mold and the lower mold by the elasticity of the spring.
Specifically, spring ejector pins 13 are arranged on the beam 4 on one sides of the upper hydraulic cylinder 5 and the lower hydraulic cylinder 7, and the upper module 6 and the lower module 7 can be prevented from impacting the beam 4 through the spring ejector pins 13.
Specifically, the two side walls of the bedplate 1 are symmetrically provided with support frames 14, which play a role in supporting and fixing the bedplate.
Specifically, the output end stroke of the upper hydraulic cylinder 5 is larger than the output end stroke of the lower hydraulic cylinder 7, and since the mixture of the soft magnetic powder for manufacturing the dust core and the granulated powder of the insulating binder is set in the lower die 3, the amount of movement of the lower die 3 is reduced, and the mixture is prevented from shaking in the lower die 3 due to long-time movement, which affects the quality of the dust core.
Specifically, the cross section of the upper slider 6 and the cross section of the lower slider 8 are the same in size and shape.
Specifically, two slide grooves 10 are provided to increase the stability when the upper slider 6 and the lower slider 8 slide.
The working principle is as follows: according to the utility model, the beam 4 on the bedplate 1 can support and fix the upper hydraulic cylinder 5 and the lower hydraulic cylinder 7, the upper slide block 6 and the lower slide block 8 can slide on the bedplate 1 through the matching arrangement of the chute 10 and the slide rail 9, so that the upper slide block 6 and the lower slide block 8 are prevented from vibrating in the movement process, and therefore, the offset phenomenon is generated, and the upper die 2 and the lower die 3 on the pressing plate 122 can be buffered through the matching arrangement of the groove 11 and the buffer mechanism 12. When the powder magnetic core needs to be manufactured, a mixture of soft magnetic powder and granulated powder of an insulating binding material is put into a lower die 3, an upper pressure hydraulic cylinder 5 and a lower pressure hydraulic cylinder 7 are started simultaneously, an upper die block 6 and a lower die block 8 move towards the mutually approaching direction along a slide rail 9 simultaneously, the upper die 2 and the lower die 3 reach a certain position and then are extruded mutually to be pressed into the powder magnetic core, because the upper die 2 and the lower die 3 instantaneously contact and press the mixture under the control of the upper pressure hydraulic cylinder 5 and the lower pressure hydraulic cylinder 7 in the pressing process, the phenomenon of uneven density inside the mixture can be caused due to the excessively fast pressing speed, the upper die and the lower die on a pressing plate can be buffered through a spring buffer 121, the spring buffer 121 achieves the buffering effect through the elasticity of a spring, and through the matching arrangement of a guide lug 123 and a guide groove 124, the utility model can prevent the pressure plate 122 from deviating and affecting the quality of the powder magnetic core, can prevent the upper module 6 and the lower module 7 from impacting the beam 4 through the spring thimble 13, can play a supporting role to the platen 1 through the supporting frame 14, the utility model adopts the mode of double stamping, make the upper die 2 and the lower die 3 move towards the mutual direction at the same time and carry on the extrusion operation, make the upper and lower stress of the powder magnetic core unanimous, make its internal density more uniform, prevent producing the split.
Example 2:
referring to fig. 5, specifically, the buffer mechanism 12 includes a rubber buffer 125 and a pressing plate 122, the rubber buffer 125 is disposed on the inner surface of the groove 11, the buffer end of the spring buffer 125 is fixedly connected with the pressing plate 122, the end surface of the pressing plate 122 is provided with a guide projection 123, the inner side wall of the groove 11 is provided with a guide groove 124, the pressing plate 122 is slidably connected in the guiding groove 124 through the guiding protrusion 123, and through the matching arrangement of the guiding protrusion 123 and the guiding groove 124, the pressure plate 122 is prevented from being deviated, and the surface of the pressure plate 122, which is far away from the rubber buffer 125, is fixedly connected with the upper mold 2 and the lower mold 3, which may cause the density unevenness inside the mixture due to the excessively fast pressing speed, the upper and lower molds on the platen may be cushioned by the rubber buffer 125, and the rubber buffer 125 may be cushioned by the softness of the rubber.
The working principle is as follows: according to the utility model, the beam 4 on the bedplate 1 can support and fix the upper hydraulic cylinder 5 and the lower hydraulic cylinder 7, the upper slide block 6 and the lower slide block 8 can slide on the bedplate 1 through the matching arrangement of the chute 10 and the slide rail 9, so that the upper slide block 6 and the lower slide block 8 are prevented from vibrating in the movement process, and therefore, the offset phenomenon is generated, and the upper die 2 and the lower die 3 on the pressing plate 122 can be buffered through the matching arrangement of the groove 11 and the buffer mechanism 12. When the powder magnetic core needs to be manufactured, a mixture of soft magnetic powder and granulated powder of an insulating binding material is put into the lower die 3, the upper hydraulic cylinder 5 and the lower hydraulic cylinder 7 are started simultaneously, the upper die block 6 and the lower die block 8 move towards the mutually approaching direction along the slide rail 9 simultaneously, the upper die 2 and the lower die 3 reach a certain position and then are extruded mutually to be pressed into the powder magnetic core, because the upper die 2 and the lower die 3 instantaneously contact and press the mixture under the control of the upper hydraulic cylinder 5 and the lower hydraulic cylinder 7 in the pressing process, the phenomenon of uneven density inside the mixture can be caused due to the excessively fast pressing speed, the upper die and the lower die on the pressing plate can be buffered through the rubber buffer 125, the rubber buffer 125 achieves the buffering effect through the soft rubber, and the guiding lug 123 and the guiding groove 124 are arranged in a matching way, the utility model can prevent the pressure plate 122 from deviating and affecting the quality of the powder magnetic core, can prevent the upper module 6 and the lower module 7 from impacting the beam 4 through the spring thimble 13, can play a supporting role to the platen 1 through the supporting frame 14, the utility model adopts the mode of double stamping, make the upper die 2 and the lower die 3 move towards the mutual direction at the same time and carry on the extrusion operation, make the upper and lower stress of the powder magnetic core unanimous, make its internal density more uniform, prevent producing the split.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a suppression frock of dust core, includes platen (1), goes up mould (2) and bed die (3), its characterized in that: the upper end wall and the lower end wall of the bedplate (1) are respectively provided with a crossbeam (4), the crossbeam (4) at the upper end is provided with an upper hydraulic cylinder (5), the output end of the upper hydraulic cylinder (5) penetrates through the crossbeam (4) at the upper side and is fixedly provided with an upper sliding block (6), the crossbeam (4) at the lower end is provided with a lower hydraulic cylinder (7), the output end of the lower hydraulic cylinder (7) penetrates through the crossbeam (4) at the lower side and is fixedly provided with a lower sliding block (8), the surface of the bedplate (1) and positioned between the crossbeams (4) are respectively provided with a sliding rail (9), the surfaces of the upper sliding block (6) and the lower sliding block (8) close to the bedplate (1) are respectively provided with a sliding groove (10), the upper sliding block (6) and the lower sliding block (8) are respectively connected on the sliding rails (9) in a sliding manner through the sliding grooves (11), and the surfaces of the upper sliding block (6) and the lower sliding block (8) close to each other are respectively provided with grooves (11), be equipped with buffer gear (12) in recess (11), go up mould (2) and set up on buffer gear (12) be connected with last slider (6), lower mould (3) set up on buffer gear (12) be connected with lower slider (8).
2. The pressing tool for the powder magnetic core according to claim 1, characterized in that: buffer gear (12) include spring buffer (121) and clamp plate (122), spring buffer (121) set up on the inside surface of recess (11), the buffering end and clamp plate (122) fixed connection of spring buffer (121), be equipped with direction lug (123) on the terminal surface of clamp plate (122), the inside wall of recess (11) is equipped with guide way (124), direction lug (123) sliding connection is in guide way (124), the surface that spring buffer (121) was kept away from in clamp plate (122) respectively with last mould (2) and bed die (3) fixed connection.
3. The pressing tool for the powder magnetic core according to claim 1, characterized in that: and spring thimbles (13) are arranged on one sides of the beam (4) on the upper hydraulic cylinder (5) and the lower hydraulic cylinder (7).
4. The pressing tool for the powder magnetic core according to claim 1, characterized in that: two side walls of the bedplate (1) are symmetrically provided with support frames (14).
5. The pressing tool for the powder magnetic core according to claim 1, characterized in that: the stroke of the output end of the upper hydraulic cylinder (5) is larger than that of the output end of the lower hydraulic cylinder (7).
6. The pressing tool for the powder magnetic core according to claim 1, characterized in that: the cross section of the upper sliding block (6) is the same as that of the lower sliding block (8) in size and shape.
7. The pressing tool for the powder magnetic core according to claim 1, characterized in that: the number of the sliding rails (9) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121190345.XU CN215377103U (en) | 2021-05-31 | 2021-05-31 | Pressing tool for powder magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121190345.XU CN215377103U (en) | 2021-05-31 | 2021-05-31 | Pressing tool for powder magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215377103U true CN215377103U (en) | 2021-12-31 |
Family
ID=79632234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121190345.XU Active CN215377103U (en) | 2021-05-31 | 2021-05-31 | Pressing tool for powder magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215377103U (en) |
-
2021
- 2021-05-31 CN CN202121190345.XU patent/CN215377103U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110421779B (en) | Efficient die-closing vertical injection molding mechanism and working method thereof | |
| CN209971263U (en) | Forming mechanism of plastic forming machine | |
| CN215377103U (en) | Pressing tool for powder magnetic core | |
| CN211807391U (en) | Polytrifluoroethylene overlength horizontal rod mold structure | |
| CN201483685U (en) | Drawn needle type mould | |
| CN213860433U (en) | Injection mold is used in sole production of quick drawing of patterns | |
| CN214324069U (en) | High-precision injection mold | |
| CN201244886Y (en) | Inner core pulling moulding core mould | |
| CN212980849U (en) | Mould transportation damper box | |
| CN209697986U (en) | A kind of enmgine exhaust casting mould | |
| CN111730819A (en) | Mould core-pulling structure | |
| CN219213832U (en) | Mould model shell | |
| CN216607177U (en) | Wire box forming die | |
| CN220095367U (en) | Injection mold with guiding mechanism | |
| CN217916306U (en) | A mould for preparing household electrical appliances display panel | |
| CN219133030U (en) | Stable mould structure of shaping | |
| CN216828273U (en) | Stretching extrusion forming die | |
| CN218196644U (en) | Battery case injection mold with limiting structure | |
| CN208375840U (en) | It is a kind of for forming the mold of SIM card lid | |
| CN218700629U (en) | Rubber part mould unloading device with metal insert | |
| CN113205941A (en) | Pressing tool for powder magnetic core | |
| CN213829982U (en) | Biplate location forming device | |
| CN213763732U (en) | Prevent mould frock of mould deformation | |
| CN211640819U (en) | Integrated into one piece injection mold | |
| CN217710095U (en) | Lower die buffer seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A pressing tool for pressing powder magnetic core Effective date of registration: 20230301 Granted publication date: 20211231 Pledgee: Bank of China Limited Jingzhou Branch Pledgor: HUBEI CMSS TECHNOLOGY Co.,Ltd. Registration number: Y2023420000084 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |