Magnetic powder forming press with feeding device

Abstract

The invention relates to a magnetic powder forming press with a feeding device. The magnetic powder forming press comprises a powder weighing device, a powder adding device and a punch forming device. The punch forming device is provided with a die for punching magnetic powder into a green body; a sliding feeding device is further arranged, the feeding device is provided with a rotatable clamping arm, and a supporting plate is further arranged on the clamping arm. According to the invention, the defect that large-size and heavy-weight green bodies cannot be mechanically rotated in the prior art is overcome, the mechanical transfer of the large-size and heavy-weight green bodies is realized, the labor is saved, and the efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical powder forming presses, in particular to a magnetic powder forming press with a feeding device. Background Art

[0002] Sintered NdFeB is a rare earth permanent magnet material manufactured using the principle of powder metallurgy. The product is widely used in various industrial motors including new energy vehicles, power tools, electric bicycles, air-conditioning compressors, aerospace and other fields.

[0003] In the field of powder metallurgy, manual unloading is usually done because powder metallurgy products have low strength before sintering and are easily deformed by force. The clamping force of the robot to clamp the green product is not well designed, which can easily crush the green product or cause it to slip during operation due to insufficient clamping. Especially in the manufacture of heavy green products, there is currently no robot that can replace manual labor.

[0004] The Chinese utility model patent with the authorization announcement number CN213765898U discloses a pneumatic clamp for controlling the clamping force of a powder metallurgy green product, including a proportional valve, a cylinder, a first clamp structure and a second clamp structure; the first clamp structure and the second clamp structure have the same structure, including a clamp bracket and a clamp head structure. After the powder metallurgy press presses the green product, the manipulator drives the clamp to the specified position, and the cylinder drives the first clamp structure and the second clamp structure to move toward each other, thereby grabbing the green product; after the manipulator grabs the green product to the specified position, the cylinder drives the first clamp structure and the second clamp structure to move in the opposite direction to release the green product. The proportional valve automatically adjusts the air pressure intensity when the clamp is grabbing according to the type of green product being grabbed, thereby improving the grabbing ability.

[0005] However, this technical solution is only applicable to small-sized green billets with a diameter of less than 80 mm, a thickness of less than 40 mm, and a weight of no more than 2 kg. In the process of producing large-volume green billets with a diameter of more than 100 mm, a thickness of more than 45 mm, and a weight of more than 5 kg, at least 2-3 workers should be arranged to carry the materials manually when taking them out. Otherwise, the clamps of the above technical solution will cause the product to slip due to the excessive weight of the green billets themselves and insufficient clamping force. If the clamping force of the clamps is increased, the green billets will be damaged. Summary of the invention

[0006] The purpose of the present invention is to provide a magnetic powder forming press with a feeding device, which solves the difficult problem that the prior art cannot use a manipulator to transport large-volume and heavy-weight magnetic powder green bodies.

[0007] To achieve the above object, the technical solution of the present invention is: A magnetic powder forming press with a feeding device, comprising a powder weighing device, a powder adding device and a stamping device; the stamping device is provided with a mold for stamping the magnetic powder into a green compact; A slide rail is arranged above the die of the stamping forming device, and a slide plate is slidably arranged on the slide rail; a feeding device is also arranged, and the feeding device is connected to the slide plate; and a slide plate driving mechanism is also arranged to drive the slide plate to move on the slide rail; The feeding device comprises a rotary drive mechanism, a clamping drive mechanism, two clamping arms and a floating mechanism arranged between the rotary drive mechanism and the clamping drive mechanism; The two clamping arms are driven to open / close each other by a clamping drive mechanism, the clamping drive mechanism is connected to the floating mechanism, and the rotation drive mechanism drives the combination of the floating mechanism, the clamping drive mechanism and the clamping arms to rotate, so that the two clamping arms rotate from a vertical parallel state to a horizontal up-and-down state, or, the two clamping arms rotate from a horizontal up-and-down state to a vertical parallel state; The floating mechanism comprises a bottom plate, a floating plate, a cover plate and an elastic member, a cover plate is arranged on each side of the bottom plate, the floating plate is slidably connected with the bottom plate and slides between the two cover plates, and an elastic member is arranged between the two sides of the floating plate and the cover plates; The clamping driving mechanism is connected to the floating plate, one side of the rotating driving mechanism is connected to the bottom plate, and the other side of the rotating driving mechanism is connected to the sliding plate.

[0008] Two parallel slide rails are arranged, and the sliding plate includes a mounting portion, and two hanging arms are symmetrically arranged on the upper part of the mounting portion. The two hanging arms are respectively slidably connected to the two slide rails. The sliding plate is also provided with a driving connection portion connected to the sliding plate driving mechanism; the rotating driving mechanism of the feeding device is arranged on the mounting portion.

[0009] The sliding drive mechanism comprises a driving motor and a screw rod, and the screw rod is connected to the sliding connection part.

[0010] The bottom plate of the floating mechanism is provided with a slide groove, the floating plate is provided with a protruding slide bar, and the slide bar is arranged in the slide groove.

[0011] The bottom plate is provided with two parallel slide grooves, and the floating plate is correspondingly provided with two parallel slide bars; elastic members are provided between the two ends of the slide bar of the floating plate and the cover plate, and two elastic members are provided on each side.

[0012] The elastic member is a spring.

[0013] The rotary drive mechanism is a rotary cylinder, and the clamping drive mechanism is a clamping cylinder.

[0014] The clamping arm is provided with a detachable supporting plate.

[0015] The support plate is provided with a slot, and the clamp arm is inserted into the slot of the support plate.

[0016] A detachable support plate is arranged on the clamping arm rotated downward.

[0017] The advantages of the present invention are: 1. The feeding device of the present invention can be added to the original equipment, which is low in cost and quick in effect; 2. The rotating drive mechanism makes the feeding device no longer clamp the green blank in a vertical state all the time, which effectively prevents the green blank from slipping due to its own excessive weight; 3. The floating mechanism is provided with a slidable floating plate with springs on both sides, and the clamping arm does not clamp the green blank stiffly when clamping the green blank, so that the two clamping arms can clamp the two sides of the green blank synchronously, and the green blank will not be moved and damaged because one side of the clamping arm contacts the green blank first; 4. The detachable support plate can lift the green blank after the feeding device rotates, and the large area of ​​the support plate can be used to support green blanks of large weight and volume, which can effectively protect the integrity of the green blank and the stability during transportation; 5. Because the support plate is detachable, the support plate can be set to various sizes to adapt to green blanks of different specifications, so as to facilitate the production of green blanks of different specifications. 6. Two slide rails are arranged in parallel, and the sliding plate is provided with two symmetrical hanging arms, and the two hanging arms are arranged on the two slide rails, so that the feeding device can keep balance and stability during operation; 7. After the implementation of the present invention, only the staff at the raw material unloading place need to be retained, and the staff originally arranged to take the material at the mold are not needed, which significantly reduces the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic structural diagram of the feeding device of the present invention in a state where no material is taken; Figure 3 It is a schematic diagram of the structure of the feeding device of the present invention after taking the material; Figure 4 It is a schematic diagram of the structure of the connection between the feeding device and the slide rail of the present invention; Figure 5 It is a schematic diagram of the structure of the sliding plate of the present invention; Figure 6 It is a schematic diagram of the structure of the feeding device of the present invention; Figure 7 It is a schematic diagram of the structure of the floating mechanism in the feeding device of the present invention; Figure 8 It is an exploded view of the feeding device structure of the present invention; In the figure: 101-powder weighing device; 102-powder adding device; 103-stamping device; 1-rotation driving mechanism; 2-clamping driving mechanism; 3-floating mechanism; 31-bottom plate; 32-floating plate; 33-cover plate; 34-spring; 4-clamping arm; 5-support plate; 6-mold; 7-slide rail; 8-slide plate; 81-installation part; 82-hanging arm; 83-drive connecting part; 9-slide plate driving mechanism; 91-driving motor; 92-screw; 10-green billet. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings, which are only used for exemplary description and cannot be understood as limiting the present invention.

[0021] In order to more concisely describe the present embodiment, some parts known to those skilled in the art but not related to the main content of the present invention are omitted in the drawings or descriptions. In addition, for the convenience of description, some parts in the drawings are omitted, enlarged or reduced, but they do not represent the size or entire structure of the actual product.

[0022] The present invention discloses a magnetic powder forming press with a feeding device, such as Figure 1 As shown, as in the prior art, there are a powder weighing device 101, a powder adding device 102 and a stamping device 103; the stamping device 103 is provided with a mold 6 for stamping the magnetic powder into a green body 10. The powder weighing device 101 weighs a certain amount of magnetic material powder to be processed, and feeds the weighed powder into the powder adding device 102, and the powder adding device 102 then feeds the magnetic powder into the mold 6 of the stamping device 103, and the mold 6 produces a green body 10 of a molded magnetic material powder.

[0023] The present invention Figure 1-4 As shown, a slide rail 7 is arranged above the mold 6 of the stamping forming device 103, and a slide plate 8 is slidably arranged on the slide rail 7; a feeding device is also provided, and the feeding device is connected to the slide plate 8; a slide plate driving mechanism 9 is also provided for driving the slide plate 8 to move on the slide rail 7; preferably, the slide plate driving mechanism 9 includes a driving motor 91 and a screw 92.

[0024] like Figure 6-8 As shown, the feeding device comprises a rotary drive mechanism 1 , a clamping drive mechanism 2 , two clamping arms 4 and a floating mechanism 3 arranged between the rotary drive mechanism 1 and the clamping drive mechanism 2 .

[0025] The two clamping arms 4 are driven by the clamping driving mechanism 2 to open / close relative to each other so as to clamp and transfer the magnetic powder green compact 10 or release the clamped green compact 10 .

[0026] like Figure 6 , Figure 8 As shown, the clamping drive mechanism 2 is connected to the floating mechanism 3. After the clamping arm 4 clamps the green body 10, the rotating drive mechanism 1 drives the combination of the floating mechanism 3, the clamping drive mechanism 2 and the clamping arm 4 to rotate, so that the two clamping arms 4 rotate from a vertical parallel state to a horizontal up-and-down state, as shown in FIG. Figure 2 , Figure 3As shown, in this way, the state of vertically clamping the green body 10 is transformed into the state of lifting the green body 10, eliminating the possibility of the green body 10 slipping from the clamping arm 4 due to its own weight, thereby ensuring the integrity and stability of the green body 10 during the transportation process; when the green body 10 is transported to the destination, the rotating drive mechanism 1 drives the combination of the floating mechanism 3, the clamping drive mechanism 2 and the clamping arm 4 to rotate in the opposite direction, so that the two clamping arms 4 rotate from the horizontal up and down state to the vertical parallel state, and the green body 10 is released and placed in the specified position, thereby completing the transportation of the green body 10.

[0027] Preferably, the rotary drive mechanism 1 is a rotary cylinder, and the clamping drive mechanism 2 is a clamping cylinder.

[0028] The clamp arm 4 is provided with a detachable support plate 5, so that the present invention can be used not only for the removal and transportation of large-volume and heavy green blanks 10, but also for the removal and transportation of conventional green blanks 10. When used for the removal and transportation of conventional green blanks 10, the support plate 5 can be removed. Of course, the support plate 5 is provided with detachable various sizes to adapt to green blanks 10 of different sizes, so as to facilitate the replacement of support plates 5 of different sizes corresponding to green blanks 10 of different sizes.

[0029] It is not necessary to install the support plate 5 on both clamping arms 4 , and it is sufficient to only provide a detachable support plate 5 on the clamping arm 4 located at the lower side after rotation.

[0030] In order to facilitate the disassembly of the support plate 5, a slot is provided on the support plate 5. The slot is adapted to the width and thickness of the clamp arm 4. The clamp arm 4 can be directly inserted into the slot of the support plate 5, so that the replacement of the support plate 5 is more convenient.

[0031] like Figure 7 , Figure 8 As shown, a floating mechanism 3 is also arranged between the rotation drive mechanism 1 and the clamping drive mechanism 2. The floating mechanism 3 includes a bottom plate 31, a floating plate 32, a cover plate 33 and an elastic member 34. A cover plate 33 is arranged on each side of the bottom plate 31. The bottom plate 31 is provided with a slide groove. The floating plate 32 is provided with a protruding slide bar. The slide bar is arranged in the slide groove. The floating plate 32 is slidably connected with the bottom plate 31 and slides between the two cover plates 33. Preferably, the bottom plate 31 is provided with two parallel slide grooves, and the floating plate 32 is correspondingly provided with two parallel slide bars. Elastic members 34 are arranged between the two sides of the floating plate 32 and the cover plate 33. The elastic members 34 are arranged between the two ends of the slide bar of the floating plate 32 and the cover plate 33. Two elastic members 34 are arranged on each side. The elastic members 34 are usually springs. The clamping drive mechanism 2 is connected to the floating plate 32, and the rotation drive mechanism 1 is connected to the bottom plate 31.

[0032] When clamping the green body 10, the green body 10 ejected from the mold 6 cannot be guaranteed to be exactly located in the middle of the two clamping arms 4 every time, so that the two clamping arms 4 can clamp both sides of the green body 10 at the same time; if the green body 10 deviates to one side after being ejected, the clamping arm 4 on one side will first touch the green body 10, and during the clamping process, the green body 10 will inevitably move laterally, thereby possibly damaging the green body 10. To solve this problem, the present invention sets a floating mechanism 3 between the rotating drive mechanism 1 and the clamping drive mechanism 2. The function of the floating mechanism 3 is that when the clamping arm 4 goes to clamp the green body, if the clamping arm 4 on one side touches the green body before the clamping arm 4 on the other side, the floating plate 32 slides on the bottom plate 31 under the elastic force of the spring, so that the clamping arm 4 on the other side is close to the green body 10, so that the green body 10 is evenly stressed and clamped stably, and the green body 10 will not move, so that the green body 10 will not be displaced and damaged under the touch of the clamping arm 4 on one side.

[0033] like Figure 2-4 As shown, the other side of the rotary drive mechanism 1 of the feeding device is connected to the sliding plate 8 .

[0034] Two parallel slide rails 7 are provided on the stamping forming device 103. Figure 5 As shown, the sliding plate 8 includes a mounting portion 81 , and two hanging arms 82 are symmetrically arranged on the upper portion of the mounting portion 81 . The two hanging arms 82 are respectively slidably connected to the two slide rails 7 , so that the sliding plate 8 can slide on the slide rails 7 more smoothly.

[0035] The sliding plate 8 is also provided with a driving connection portion 83 connected to the screw 92 of the sliding plate driving mechanism 9 ; the rotating driving mechanism 1 of the feeding device is provided on the mounting portion 81 .

[0036] The driving motor 91 of the sliding driving mechanism 9 drives the screw 92 to rotate, thereby driving the sliding plate 8 to slide back and forth on the slide rail 7, and the feeding device picks up and discharges materials on the slide rail 7 along with the sliding plate 8.

[0037] The operation process of the feeding device in the present invention is as follows: Figure 2 As shown, when the mold 6 ejects the stamped green body 10, the drive motor 91 is started, and the screw 92 rotates to make the sliding plate 8 slide with the feeding device toward the green body 10. When the green body 10 slides to the space between the two clamping arms 4, the clamping cylinder clamps the green body 10, and the feeding device continues to slide forward. During this process, the rotating cylinder is started, and the clamping arm 4 rotates 90 0 ,like Figure 3 As shown, the support plate 5 on the clamp arm 4 continues to slide forward with the green body 10 until it slides to the unloading position of the green body 10, and the rotary cylinder drives the clamp arm 4 to reverse 90 degrees. 0 , the green body 10 is unloaded.

[0038] The present invention provides a feeding device with a rotatable clamping arm 4, so that the taking and placing of large-volume and heavy green blanks 10 can be mechanized.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, any equivalent changes and modifications made according to the content of the patent application scope of the present invention should be within the technical scope of the present invention.

Claims

1. A magnetic powder forming press with a feeding device, comprising a powder weighing device (101), a powder adding device (102) and a stamping device (103); the stamping device (103) is provided with a mold (6) for stamping the magnetic powder into a green body (10); Features: A slide rail (7) is provided above the die (6) of the stamping and forming device (103), and a slide plate (8) is slidably provided on the slide rail (7); a feeding device is also provided, and the feeding device is connected to the slide plate (8); and a slide plate driving mechanism (9) is also provided for driving the slide plate (8) to move on the slide rail (7); The feeding device comprises a rotating drive mechanism (1), a clamping drive mechanism (2), two clamping arms (4), and a floating mechanism (3) arranged between the rotating drive mechanism (1) and the clamping drive mechanism (2); The two clamping arms (4) are driven to open / close with each other by a clamping drive mechanism (2), the clamping drive mechanism (2) is connected to the floating mechanism (3), and the rotation drive mechanism (1) drives the combination of the floating mechanism (3), the clamping drive mechanism (2) and the clamping arms (4) to rotate, so that the two clamping arms (4) rotate from a vertical parallel state to a horizontal up-and-down state, or the two clamping arms (4) rotate from a horizontal up-and-down state to a vertical parallel state; The floating mechanism (3) comprises a bottom plate (31), a floating plate (32), a cover plate (33) and an elastic member (34); a cover plate (33) is provided on each side of the bottom plate (31); the floating plate (32) is slidably connected to the bottom plate (31) and slides between the two cover plates (33); and elastic members (34) are provided between the two sides of the floating plate (32) and the cover plates (33); The clamping drive mechanism (2) is connected to the floating plate (32), one side of the rotation drive mechanism (1) is connected to the bottom plate (31), and the other side of the rotation drive mechanism (1) is connected to the sliding plate (8).

2. The magnetic powder forming press with a feeding device according to claim 1, characterized in that: Two parallel slide rails (7) are provided, and the slide plate (8) includes a mounting portion (81). Two hanging arms (82) are symmetrically provided on the upper portion of the mounting portion (81), and the two hanging arms (82) are respectively slidably connected to the two slide rails (7). The slide plate (8) is also provided with a driving connection portion (83) connected to the slide plate driving mechanism (9); and the rotating driving mechanism (1) of the feeding device is provided on the mounting portion (81).

3. The magnetic powder forming press with a feeding device according to claim 2, characterized in that: The sliding drive mechanism (9) comprises a driving motor (91) and a screw rod (92), wherein the screw rod (92) is connected to the sliding connection part (83).

4. The magnetic powder forming press with a feeding device according to claim 1, characterized in that: The bottom plate (31) of the floating mechanism (3) is provided with a slide groove, and the floating plate (32) is provided with a protruding slide bar, and the slide bar is arranged in the slide groove.

5. The magnetic powder forming press with a feeding device according to claim 4, characterized in that: The bottom plate (31) is provided with two parallel sliding grooves, and the floating plate (32) is correspondingly provided with two parallel sliding strips; elastic members (34) are provided between the two ends of the sliding strip of the floating plate (32) and the cover plate (33), with two elastic members (34) being provided on each side.

6. The magnetic powder forming press with a feeding device according to claim 5, characterized in that: The elastic member (34) is a spring.

7. The magnetic powder forming press with a feeding device according to claim 1, characterized in that: The rotary drive mechanism (1) is a rotary cylinder, and the clamping drive mechanism (2) is a clamping cylinder.

8. The magnetic powder forming press with a feeding device according to claim 1, characterized in that: The clamping arm (4) is provided with a detachable supporting plate (5).

9. The magnetic powder forming press with a feeding device according to claim 8, characterized in that: The support plate (5) is provided with a slot, and the clamping arm (4) is inserted into the slot of the support plate (5).

10. The magnetic powder forming press with a feeding device according to claim 8, characterized in that: A detachable support plate (5) is provided on the clamping arm (4) rotated downward.

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