Isostatic pressing forming semi-automatic powder filling device

Abstract

The utility model discloses an isostatic pressing forming semi-automatic powder filling device which comprises a powder bin and a vibration platform, a forming die is placed on the top of the vibration platform, a powder hopper is installed on the top of the forming die, and an upper die cover is connected to the opening position of the forming die. Fixing rods are fixedly connected to the left side and the right side of the lower portion of the powder bin, a support is arranged on the outer sides of the two fixing rods in a sleeving mode, and high-frequency rapping hammers are arranged on the left side and the right side of the interior of the support. According to the isostatic pressing forming semi-automatic powder filling device, the interval operation of powder filling, rapping of the high-frequency rapping hammer, powder filling and rapping of the high-frequency rapping hammer can be controlled according to a program, the high-frequency rapping hammer raps in sequence from bottom to top until a mold is filled with powder, and therefore it is guaranteed that the powder from the bottom to the top of the mold can be fully compacted through vibration; and meanwhile, the uniformly filled and compacted powder can keep a better shape during demolding, so that the probability of product damage is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder filling device technical field, concretely to a kind of isostatic pressing semi-automatic powder filling device. BACKGROUND

[0002] Semi-automatic powder filling device is a kind of equipment combined with automation and manual operation, for filling powder material to specific container or mold;Defects: traditional device needs manual material to pass to the inside of device for discharging when using, inconvenient to use;Traditional device, when using, material is overfull in the inside of discharging hopper, material is extruded between each other, easy to form blockage, inconvenient to use;Traditional device, when using, it is inconvenient to control the displacement of device discharging;To solve the above-mentioned defects, prior art (application number: 201821953240.3, authorized announcement day is 2019-07-09's Chinese patent) discloses an automatic powder filling machine, utilizes one side fixedly provided with rotating auger, can transport the material of one side of device to the inside of discharging hopper, does not need manual feeding, so that the device is more convenient to use;The top of the discharging hopper of the device is fixedly provided with driving motor, driving screw shaft rotates, loosens material, prevents material from blocking;The bottom of the discharging hopper of the device is fixedly provided with discharge pipe, and the middle of discharge pipe is fixedly provided with electromagnetic valve, can control the discharging speed and displacement of material, so that the device is more convenient to use.

[0003] Prior art is through rotating auger to transport material to the inside of discharging hopper, simultaneously, material enters into the box through discharging hopper, realizes the purpose of automatic powder filling, but in powder filling process, powder is prone to agglomeration or bridging phenomenon, leading to uneven distribution of powder in mold, simultaneously, the compactness of powder in mold is not enough, easy to appear collapse, deformation and other problems when demolding, increase the scrap rate of product, therefore we propose that isostatic pressing semi-automatic powder filling device can well solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of isostatic pressing semi-automatic powder filling device to solve the above background technical problems that powder is prone to agglomeration or bridging phenomenon in powder filling process, leading to uneven distribution of powder in mold, simultaneously, the compactness of powder in mold is not enough, easy to appear collapse, deformation and other problems when demolding, increase the scrap rate of product.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A kind of isostatic pressing forming semi-automatic powder filling device, including powder bunker and vibration platform, the top of vibration platform is placed with forming die, and the top of forming die is equipped with powder hopper, and the opening position of forming die is connected with upper die cover;Further comprising: the left and right sides below powder bunker are fixedly connected with fixed rod, and the outside of two fixed rods is equipped with support, the left and right sides in the inside of support are provided with high-frequency vibration hammer, the forming die and powder bunker are connected by powder down-slope pipe, and the inside of powder bunker discharge port is equipped with bunker gate.

[0006] Preferably, the support and the two fixed rods are slidingly connected, and the left side of the bottom of the support is equipped with an electric push rod.

[0007] Preferably, the middle position of the top of the vibration platform is embedded with a suction cup, and the inside of the suction cup is provided with a piston plate, the bottom of the piston plate is fixedly connected with a rack, the inside bearing of the vibration platform is connected with a bidirectional threaded rod, the outside of both ends of the bidirectional threaded rod is equipped with a clamping plate, and the outside of the middle of the bidirectional threaded rod is fixedly equipped with a driving gear, the left side of the inside of the vibration platform is rotatably connected with a rotating rod, and the bottom of the rotating rod is drivingly connected with the left end of the bidirectional threaded rod through a bevel gear set.

[0008] Preferably, the threads on the outside of both ends of the bidirectional threaded rod are in opposite directions, the two clamping plates are threadedly connected with the bidirectional threaded rod, and the bottom of the two clamping plates is slidingly connected with the inner wall of the vibration platform, and the opposite surfaces of the two clamping plates are provided with rubber pads.

[0009] Preferably, the outside of the piston plate is sealingly and slidingly connected with the inner wall of the suction cup, the bottom of the rack extends into the inside of the vibration platform, and the rack is meshingly connected with the driving gear.

[0010] Preferably, the left and right sides in the inside of the support are provided with cavities, the front of the support is fixedly equipped with a connecting pipe, and the outside of the high-frequency vibration hammer is equipped with a return spring between the inner wall of the cavity.

[0011] Preferably, the high-frequency vibration hammer is slidingly arranged on the inner wall of the cavity, the connecting pipe is in communication with the inside of the cavity, and the front end of the connecting pipe is connected with an external air compressor.

[0012] Compared with the prior art, the utility model has the beneficial effects that: the isostatic pressing forming semi-automatic powder filling device adopts a novel structure design, and the specific contents are as follows:

[0013] (1) the powder under the chute pipe is placed in the powder hopper, the preparation work before powder filling is done well, and the automatic powder filling program is started, the powder filling-high frequency vibration hammer vibration-powder filling-high frequency vibration hammer vibration interval operation is controlled according to the program, the high frequency vibration hammer is vibrated from bottom to top in turn until the powder is filled in the mold, so that the powder from the bottom to the top of the mold can be fully vibrated, and the uniformly filled and compacted powder can maintain good shape when demolding, and the probability of product damage is reduced; further, the powder under the chute pipe and the powder hopper are taken off after the powder filling operation is completed, and the mold cover is manually covered.

[0014] (2) when the forming mold is placed on the vibration platform, the rotating rod is rotated, the rotating rod drives the bidirectional threaded rod to rotate through the bevel gear set, the two clamping plates are relatively moved and the forming mold is clamped and fixed, so that the displacement of the forming mold in the vibration process can be effectively prevented; further, the bidirectional threaded rod drives the driving gear to rotate, the driving gear drives the rack to move downward, and the piston plate moves downward in the suction cup, then the suction cup generates negative pressure and adsorbs and fixes the forming mold, so that the stability of the forming mold is further ensured.

[0015] (3) one end of the connecting pipe is connected with the external air compressor, so that the air compressor sends compressed air to the cavity through the connecting pipe, drives the high frequency vibration hammer to move, and knocks the outside of the forming mold, then the high frequency vibration hammer is reset under the elastic force of the reset spring, the above operation is repeated, so that the high frequency vibration hammer reciprocatingly knocks the outside of the forming mold, so that the high frequency vibration action is generated; further, the electric push rod drives the bracket to reciprocatingly move up and down, and cooperates with the high frequency vibration of the high frequency vibration hammer, so that the material is uniformly pressed in all directions, and the powder is vibrated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a main section structure schematic view of the utility model;

[0017] Figure 2 It is a whole three-dimensional structure schematic view of the utility model;

[0018] Figure 3 It is a high frequency vibration hammer three-dimensional structure schematic view of the utility model;

[0019] Figure 4 It is a clamping plate, bidirectional threaded rod and rotating rod three-dimensional structure schematic view of the utility model;

[0020] Figure 5 It is a forming mold, powder hopper and mold cover three-dimensional structure schematic view of the utility model;

[0021] Figure 6 It is a Figure 1An enlarged structural schematic view at middle A;

[0022] Figure 7 The utility model discloses Figure 1 An enlarged structural schematic view at middle B.

[0023] In the figure: 1, vibration platform;2, forming die;3, support;4, high frequency vibration hammer;5, powder hopper;6, powder downslide pipe;7, stock bin gate;8, powder bin;9, upper die cover;10, fixed rod;11, electric push rod;12, suction cup;13, clamping plate;14, two-way threaded rod;15, driving gear;16, rack;17, piston plate;18, rotating rod;19, cavity;20, connecting pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-7 The utility model provides the following technical scheme: a semi-automatic powder filling device for isostatic pressing forming;

[0026] Embodiment one: in order to solve the problem that in the prior art, powder is prone to agglomeration or bridging phenomenon in the powder filling process, leading to uneven distribution of powder in the die, and the compactness of powder in the die is not enough, and collapse, deformation and other problems are prone to occur during demolding, increasing the product scrap rate, therefore the following scheme is disclosed, and specific reference is made to Figure 1 、 Figure 2 And Figure 5 As shown in the drawings, including powder bin 8 and vibration platform 1, the top of vibration platform 1 is placed with forming die 2, the top of forming die 2 is installed with powder hopper 5, and the opening position of forming die 2 is connected with upper die cover 9;It also includes: the left and right sides below powder bin 8 are fixedly connected with fixed rod 10, and the outer sides of the two fixed rods 10 are sleeved with support 3, the left and right sides in the support 3 are provided with high frequency vibration hammer 4, forming die 2 and powder bin 8 are communicated through powder downslide pipe 6, the inside of powder bin 8 discharge port is installed with stock bin gate 7, the support 3 and the two fixed rods 10 are slidingly connected, and the left side of the bottom of support 3 is installed with electric push rod 11.

[0027] The forming mold 2 is placed on the vibration platform 1, the position of the high-frequency vibration hammer 4 (the bottom of the mold) is adjusted, the powder funnel 5 is installed, the powder down-drawing pipe 6 is placed in the powder funnel 5, and the pre-powder filling preparation work is completed; the vibration platform 1 is started, and the automatic powder filling program is started. The powder filling-high-frequency vibration hammer 4 vibration-powder filling-high-frequency vibration hammer 4 vibration interval operation is controlled according to the program. The high-frequency vibration hammer 4 vibrates from bottom to top in sequence until the powder filling is completed. Then, the program control powder filling time is 25-120 seconds, the program control high-frequency vibration hammer 4 vibration time is 15-75 seconds, and then the powder down-drawing pipe 6 and the powder funnel 5 are removed after the powder filling operation is completed. Then, the upper mold cover 9 is manually covered, the isostatic pressing powder filling work is completed, and then the powder filled forming mold 2 is placed in the wet bag isostatic pressing machine, and the 180MPa isostatic pressing is performed. The powder filling silicon nitride riser pipe green body is operated according to the above steps 1-5. The powder filling time is 90 seconds, the vibration time is 45 seconds, the 180MPa isostatic pressing is performed, the density of the silicon nitride riser pipe green body is 1.98, and the process requirement (≥1.94) is met. The powder filling silicon nitride riser pipe green body is operated according to the above steps 1-5. The powder filling time is 75 seconds, the vibration time is 55 seconds, the 180MPa isostatic pressing is performed, the density of the silicon nitride riser pipe green body is 1.96, and the process requirement (≥1.94) is met.

[0028] Example two: different from example one, the forming mold 2 is clamped and fixed by the relative movement of the two clamping plates 13, and the suction cup 12 is used to adsorb and fix the forming mold 2, so that the displacement of the forming mold 2 during the vibration process can be effectively prevented. For details, refer to Figure 1 、 Figure 4 and Figure 6 The middle position of the top of the vibration platform 1 is embedded and installed with the suction cup 12, the inside of the suction cup 12 is provided with the piston plate 17, the bottom of the piston plate 17 is fixedly connected with the rack 16, the inside bearing of the vibration platform 1 is connected with the bidirectional threaded rod 14, the outer sides of the two ends of the bidirectional threaded rod 14 are both sleeved with the clamping plate 13, the outer side of the middle part of the bidirectional threaded rod 14 is sleeved and fixed with the driving gear 15, the outer side of the piston plate 17 and the inner wall of the suction cup 12 are in sealing and sliding connection, the bottom of the rack 16 extends into the inside of the vibration platform 1, and the rack 16 and the driving gear 15 are in meshing connection, the left side of the inside of the vibration platform 1 is rotationally connected with the rotating rod 18, the bottom of the rotating rod 18 and the left end of the bidirectional threaded rod 14 are in transmission connection through the bevel gear set, the threads on the outer sides of the two ends of the bidirectional threaded rod 14 are in opposite directions, the two clamping plates 13 and the bidirectional threaded rod 14 are in threaded connection, the bottoms of the two clamping plates 13 and the inner walls of the vibration platform 1 are in sliding connection, and the opposite surfaces of the two clamping plates 13 are both provided with rubber pads.

[0029] When the forming mold 2 is placed on the vibration platform 1, the worker manually rotates the rotating rod 18 in the positive direction, so that the rotating rod 18 drives the bidirectional threaded rod 14 to rotate through the bevel gear set, and then the two clamping plates 13 are relatively moved and clampingly fix the forming mold 2, so that the displacement of the forming mold 2 in the vibration process can be effectively prevented, and meanwhile the bidirectional threaded rod 14 drives the driving gear 15 to rotate, so that the driving gear 15 drives the rack 16 to move downward, and drives the piston plate 17 to move downward in the suction cup 12, and then the suction cup 12 generates negative pressure and adsorbs and fixes the forming mold 2, so as to further ensure the stability of the placement of the forming mold 2.

[0030] In the third embodiment, the high-frequency vibrating hammer 4 reciprocates up and down and high-frequency vibrates different parts of the forming mold 2, so that the material is uniformly pressed in all directions, and the powder is vibrated and compacted. Figure 1 、 Figure 3 and Figure 7 As shown in Figs. 3, 4 and 5, cavities 19 are formed in the left and right sides of the bracket 3, a connecting pipe 20 is fixed to the front face of the bracket 3, a return spring is installed between the outer side of the high-frequency vibrating hammer 4 and the inner wall of the cavity 19, the high-frequency vibrating hammer 4 is slidingly arranged on the inner wall of the cavity 19, the connecting pipe 20 is in communication with the inside of the cavity 19, and the front end of the connecting pipe 20 is connected with an external air compressor.

[0031] The worker connects one end of the connecting pipe 20 with the external air compressor, so that the air compressor sends compressed air into the cavity 19 through the connecting pipe 20, drives the high-frequency vibrating hammer 4 to move and knock the outer side of the forming mold 2, and then the high-frequency vibrating hammer 4 is reset under the elastic force of the return spring when the compressed air is rapidly discharged, and the above operation is repeated, so that the high-frequency vibrating hammer 4 reciprocally knocks the outer side of the forming mold 2, so as to generate a high-frequency vibrating action, and then the bracket 3 is driven by the electric push rod 11 to reciprocally move up and down, and cooperates with the high-frequency vibrating of the high-frequency vibrating hammer 4, so that the material is uniformly pressed in all directions, and the powder is vibrated and compacted.

[0032] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. An isostatic pressing semi-automatic powder filling device, comprising a powder bin (8) and a vibrating platform (1), a forming mold (2) is placed on the top of the vibrating platform (1), a powder hopper (5) is installed on the top of the forming mold (2), and an upper mold cover (9) is connected to the opening position of the forming mold (2); characterized in that, Also includes: The left and right sides below the powder bin (8) are fixedly connected with fixed rods (10), and the outer sides of the two fixed rods (10) are sleeved with supports (3), the left and right sides inside the support (3) are provided with high-frequency vibrating hammers (4), the forming die (2) and the powder bin (8) are connected through the powder down-slope pipe (6), and the inside of the discharge port of the powder bin (8) is provided with a bin gate (7).

2. The semi-automatic powder filling device for isostatic pressing according to claim 1, characterized in that: The support (3) and the two fixed rods (10) are in sliding connection, and the left side of the bottom of the support (3) is provided with an electric push rod (11).

3. The semi-automatic powder filling device for isostatic pressing according to claim 1, characterized in that: The middle position of the top of the vibration platform (1) is embeddedly provided with a suction cup (12), and the inside of the suction cup (12) is provided with a piston plate (17), the bottom of the piston plate (17) is fixedly connected with a rack (16), the inside bearing of the vibration platform (1) is connected with a bidirectional threaded rod (14), the outer sides of the two ends of the bidirectional threaded rod (14) are sleeved with clamping plates (13), and the outer side of the middle part of the bidirectional threaded rod (14) is fixedly provided with a driving gear (15), the left side of the inside of the vibration platform (1) is rotatably connected with a rotating rod (18), and the bottom of the rotating rod (18) and the left end of the bidirectional threaded rod (14) are connected through a bevel gear set.

4. The semi-automatic powder filling device for isostatic pressing according to claim 3, characterized in that: The threads on the outer sides of the two ends of the bidirectional threaded rod (14) are in opposite directions, the two clamping plates (13) and the bidirectional threaded rod (14) are in threaded connection, the bottoms of the two clamping plates (13) and the inner wall of the vibration platform (1) are in sliding connection, and the opposite surfaces of the two clamping plates (13) are provided with rubber pads.

5. The semi-automatic powder filling device for isostatic pressing according to claim 3, characterized in that: The outer side of the piston plate (17) and the inner wall of the suction cup (12) are in sealing sliding connection, the bottom of the rack (16) extends into the inside of the vibration platform (1), and the rack (16) and the driving gear (15) are in meshing connection.

6. The isostatic pressing semi-automatic powder filling device according to claim 1, characterized in that: The left and right sides inside the support (3) are provided with cavities (19), the front of the support (3) is fixedly provided with a connecting pipe (20), and the outer side of the high-frequency vibrating hammer (4) and the inner wall of the cavity (19) are provided with return springs.

7. The semi-automatic powder filling device for isostatic pressing according to claim 6, characterized in that: The high-frequency vibrating hammer (4) is slidably arranged on the inner wall of the cavity (19), the connecting pipe (20) is connected with the inside of the cavity (19), and the front end of the connecting pipe (20) is connected with an external air compressor.

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