Powder box pressing device for powder metallurgy

Abstract

A powder box pressing device for powder metallurgy belongs to the technical field of powder metallurgy equipment and comprises a pair of pressing plates, a fixed rotating rod, a fixed fulcrum seat and a pair of pressing cylinders. One ends of the pair of pressing plates are respectively clamped and connected with lug parts on two sides of the powder box, and the other ends of the pair of pressing plates are respectively and rotationally assembled with pistons of the pair of pressing cylinders; the fixed rotating rod is located between the pair of pressing plates and supported through the fixed fulcrum base, and the two ends of the fixed rotating rod are rotationally assembled with the middles of the pair of pressing plates respectively. The pair of pressing air cylinders are arranged on the powder box sliding driving module, and the pair of pressing plates rotate around the fixed rotating rod through stretching and retracting of the pair of pressing air cylinders so as to press or loosen the powder box. The lead screw guide rail is driven by the servo motor, so that the powder box is pressed, and meanwhile, the powder box moves on the powder box feeding panel so as to feed powder into a forming mold. According to the utility model, the function effect of pressing can be achieved, the space is saved, the service life is prolonged, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder metallurgy equipment, and particularly relates to a powder metallurgy powder box pressing device. Background Art

[0002] In the powder feeding device of powder metallurgy equipment, the bottom of the powder-containing cavity of the powder box is open, the powder box is tightly pressed and attached to the powder box feeding panel, and the powder box sliding drive module drives the powder box to displace on the powder box feeding panel, so that the powder-containing cavity of the powder box is communicated with the powder dropping hole of the powder box feeding panel, and the powder is sent into the molding die for pressing and molding. Before the powder enters the molding die, the powder box needs to be always tightly pressed and attached to the powder box feeding panel.

[0003] In the prior art, the pressing of the powder box is mostly of the fixed type of the cylinder body. During the movement of the powder box, the piston of the pressing cylinder frequently extends and retracts, greatly shortening the service life of the pressing cylinder; at the same time, the installation position of the pressing cylinder is limited by the overall equipment and can only extend to a relatively far position at the upper part of the equipment. The distance between the fixing point of the pressing cylinder and the pressing point of the powder box is long, and the pressing force on the powder box is unstable.

[0004] Therefore, a powder box pressing device with a simple structure, stable pressing effect, compact space and long service life is needed, which can not only achieve the pressing function effect, but also save space and extend the service life. Summary of the Utility Model

[0005] The purpose of the utility model is to aim at the above-mentioned deficiencies of the prior art and provide a simple powder metallurgy powder box pressing device. Aiming at the powder box pressing function in powder metallurgy equipment, while ensuring the reliability of the pressing function, the structure is optimized, the pressing effect is greatly improved, the space is saved and the service life is extended.

[0006] The purpose of the utility model is realized by the following technical solutions:

[0007] A powder metallurgy powder box pressing device includes a pair of pressing plates, a fixed rotating rod, a fixed fulcrum seat and a pair of pressing cylinders; the pair of pressing plates are parallel and symmetrically distributed, one end of which is provided with a U-shaped bayonet and is respectively clamped and connected with the ears on both sides of the powder box through the U-shaped bayonet, and the other end is respectively rotationally assembled with the pistons of the pair of pressing cylinders; the fixed rotating rod is located between the pair of pressing plates and is supported through the fixed fulcrum seat, and both ends of which are respectively rotationally assembled with the middle parts of the pair of pressing plates; the pair of pressing cylinders are parallel and symmetrically distributed and are arranged on the powder box sliding drive module through cylinder mounting brackets.

[0008] In the above solution, a pair of pressing cylinders and a pair of pressing plates are symmetrically distributed with respect to the cylinder mounting brackets, ensuring stable force on both ears of the toner cartridge. The extension and retraction of the pair of pressing cylinders are controlled by a solenoid valve, causing the pair of pressing plates to rotate around the fixed rotating rod to press or release the toner cartridge: when the solenoid valve is controlled to switch to the pressing state, the pistons of the pair of pressing cylinders extend, causing the rear end of the pressing plate to rise and the front end to lower to press the toner cartridge; when switched to the release position, the pistons of the pair of pressing cylinders retract, causing the rear end of the pressing plate to lower and the front end to rise to release the toner cartridge.

[0009] The cylinder mounting brackets are arranged on the toner cartridge sliding drive module. When the solenoid valve is controlled to switch to the pressing state and the toner cartridge sliding drive module drives the toner cartridge to displace on the toner cartridge feeding panel, the entire toner cartridge pressing device follows. During this process, the toner cartridge pressing device and the toner cartridge are relatively stationary, and their relative position states are the same. When the toner cartridge moves, the toner cartridge pressing device and the toner cartridge move synchronously. In this way, the piston extension amount of the pressing cylinder when pressing the toner cartridge is unique, and the pressing cylinder will not extend and retract frequently due to different positions of the toner cartridge, thus affecting the pressing effect and service life. At the same time, with this structure, the cylinders are close to the toner cartridge, and the entire device is located at the rear of the toner cartridge, with a compact structure and space saving.

[0010] Further, the toner cartridge sliding drive module includes a lead screw guide rail and a servo motor; the cylinder mounting brackets are in a shape of "Ji" and are mounted on the lead screw guide rail and fixedly connected to the slider of the lead screw guide rail.

[0011] In the above solution, the "Ji"-shaped cylinder mounting brackets include an upper top plate, two middle web plates, and two lower wing plates. The upper bottom plate is located above the lead screw guide rail. The two middle web plates are symmetrically arranged on both sides of the lead screw guide rail and are respectively fixedly connected to the sliders of the lead screw guide rail. Two pressing cylinders are symmetrically and fixedly mounted on the two lower wing plates. By driving the lead screw guide rail with the servo motor, the cylinder mounting brackets, the pressing cylinders, and the pressing plates are displaced, realizing the displacement of the toner cartridge on the toner cartridge feeding panel while pressing the toner cartridge.

[0012] Further, the fixed fulcrum seat is inclined, its high end is connected to the fixed rotating rod, and its low end is fixedly connected to the top of the cylinder mounting bracket through a cushion block. The top of the cylinder mounting bracket is provided with a limit groove, and the bottom of the cushion block is provided with a limit convex block matching the limit groove; the low end of the fixed fulcrum seat is provided with a lower plane, and the top of the cushion block is provided with a fixed groove matching the lower plane; the top of the cylinder mounting bracket, the cushion block, and the low end of the fixed fulcrum seat are mutually limited and fitted and are connected into one body by bolts.

[0013] In the above solution, the lower plane of the low end of the fixed fulcrum seat fits with the fixed groove on the top of the cushion block, the limit convex block at the bottom of the cushion block fits with the limit groove on the top of the cylinder mounting bracket, and the bolts sequentially pass through the low end of the fixed fulcrum seat, the cushion block, and the top of the cylinder mounting bracket to fixedly connect the three.

[0014] The powder cartridge pressing device of the present utility model has a reliable structure and is easy to operate. It can not only achieve the pressing function effect, but also save space, extend the service life at the same time, and has a wide range of applications. It can be extended to the pressing devices of various powder metallurgy equipment. Brief Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the powder cartridge pressing device of the present utility model;

[0016] Figure 2 is Figure 1 front view of;

[0017] Figure 3 It is a schematic diagram of the powder cartridge and the powder cartridge feeding panel;

[0018] Figure 4 It is a schematic structural diagram of the cylinder mounting bracket in the present utility model;

[0019] Figure 5 It is a schematic structural diagram of the fixed fulcrum seat in the present utility model;

[0020] Figure 6 It is a schematic structural diagram of the spacer block in the present utility model;

[0021] Wherein: 1 cylinder mounting bracket, upper top plate 1-1, limit groove 1-1-1, middle web 1-2, lower wing plate 1-3, 2 pressing cylinders, 3 fixed fulcrum seat, lower plane 3-1, 4 fixed rotating rod, 5 pressing plate, 6 powder cartridge, ear part 6-1, 7 powder cartridge feeding panel, 8 lead screw guide rail, 9 servo motor, 10 base, 11 spacer block, limit projection 11-1, fixed groove 11-2. Detailed Description of the Preferred Embodiment

[0022] As Figure 1 、 2 shown, a powder metallurgy powder cartridge pressing device includes a pair of pressing plates 5, a fixed rotating rod 4, a fixed fulcrum seat 3, and a pair of pressing cylinders 2. The powder cartridge sliding drive module is installed on the base 10 and includes a lead screw guide rail 8 and a servo motor 9. One end of a pair of pressing plates 5 is provided with a U-shaped bayonet, and is respectively engaged with the ear parts 6-1 on both sides of the powder cartridge 6 through the U-shaped bayonet, and the other ends are respectively assembled with the pistons of a pair of pressing cylinders 2 through ball eye joints.

[0023] As Figure 4 shown, the cylinder mounting bracket 1 is in a shape of "several", and includes a upper top plate 1-1, two middle webs 1-2, and two lower wing plates 1-3. The upper bottom plate is located above the lead screw guide rail. The two middle webs are symmetrically arranged on both sides of the lead screw guide rail and are respectively fixed to the sliders of the lead screw guide rail. The two pressing cylinders are symmetrically and fixedly installed on the two lower wing plates.

[0024] The fixed fulcrum seat 3 is arranged obliquely, its high end is connected to the fixed rotating rod 4, and its low end is fixedly connected to the top of the cylinder mounting bracket through the cushion block 11. The fixed rotating rod 4 is located between a pair of pressing plates, and its two ends are respectively rotationally assembled with the middle parts of the pair of pressing plates.

[0025] When the control solenoid valve is switched, the piston of the pressing cylinder extends and retracts, that is, drives the pressing plate to rotate around the fixed rotating rod, realizing the downward and upward movements of the front end of the pressing plate, and finally realizing the pressing and loosening of the toner cartridge. In the state where the toner cartridge is pressed, the lead screw guide rail is driven by the servo motor to drive the cylinder mounting bracket, the pressing cylinder, and the pressing plate to displace, so as to displace the toner cartridge 6 on the toner cartridge feeding panel 7 while pressing the toner cartridge, so as to feed the powder into the molding die.

[0026] In an embodiment of the present invention, as Figure 5 、 Figure 6 shown, the fixed fulcrum seat is arranged obliquely at 10°. A limit groove 1-1-1 is provided at the top of the upper top plate of the cylinder mounting bracket, and a limit convex block 11-1 matching the limit groove is provided at the bottom of the cushion block. The limit convex block at the bottom of the cushion block is placed in the limit groove of the upper top plate of the cylinder mounting bracket and is in close contact with each other; a lower plane 3-1 is provided at the low end of the fixed fulcrum seat, and a fixing groove 11-2 matching the lower plane is provided at the top of the cushion block. The lower plane of the fixed fulcrum seat is placed in the fixing groove at the top of the cushion block and is in close fit with each other; the top of the cylinder mounting bracket, the cushion block, and the low end of the fixed fulcrum seat are mutually limited and cooperated, and are connected into one body by bolts.

[0027] In an embodiment of the present invention, the pressing cylinder is controlled by a three-position five-way solenoid valve. When switched to the pressing state, the piston of the pressing cylinder extends, causing the rear end of the pressing plate to rise and the front end to descend, pressing the toner cartridge. When switched to the loosening position, the piston of the pressing cylinder retracts, causing the rear end of the pressing plate to descend and the front end to rise, loosening the toner cartridge. When the solenoid valve is in the middle position, it is in the holding state. At this time, the piston of the pressing cylinder does not extend or retract, and the operator can manually adjust the position state of the toner cartridge.

Claims

1. A powder metallurgy powder box pressing device, characterized in that: include: A pair of pressing plates are parallel and symmetrically distributed, and one end of the pair of pressing plates is respectively engaged with the ears on both sides of the powder box; A fixed rotating rod is located between the pair of pressing plates, and its two ends are respectively rotatably assembled with the middle parts of the pair of pressing plates; A fixed fulcrum seat, used for supporting the fixed rotating rod; A pair of clamping cylinders are distributed in parallel and symmetrically, and are arranged on the powder box sliding drive module through a cylinder mounting bracket; the pistons of the pair of clamping cylinders are respectively rotatably assembled with the other ends of a pair of clamping plates; through the extension and retraction of the pair of clamping cylinders, the pair of clamping plates are rotated around the fixed rotating rod to compress or loosen the powder box.

2. A powder metallurgy powder box pressing device according to claim 1, characterized in that: The powder box sliding drive module includes a lead screw guide rail and a servo motor; the cylinder mounting bracket is in a "X" shape, mounted on the lead screw guide rail, and fixedly connected to a slider of the lead screw guide rail.

3. The powder metallurgy powder box pressing device according to claim 1, characterized in that: A U-shaped bayonet is respectively provided at one end of the pair of pressing plates, and the U-shaped bayonet is respectively engaged and connected with the ears on both sides of the powder box.

4. A powder metallurgy powder box pressing device according to claim 2, characterized in that: The fixed fulcrum seat is arranged obliquely, the high end of which is connected to the fixed rotating rod, and the low end of which is fixedly connected to the top of the cylinder mounting bracket through a cushion block.

5. A powder metallurgy powder box pressing device according to claim 4, characterized in that: A limiting groove is provided at the top of the cylinder mounting bracket, and a limiting protrusion matching the limiting groove is provided at the bottom of the cushion block; a lower plane is provided at the lower end of the fixed fulcrum seat, and a fixing groove matching the lower plane is provided at the top of the cushion block; the top of the cylinder mounting bracket, the cushion block and the lower end of the fixed fulcrum seat are mutually limited and matched, and are connected as a whole by bolts.

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