Automatic feeding mechanism of powder metallurgy shaping machine

Abstract

The utility model discloses an automatic feeding mechanism of a powder metallurgy shaping machine, and belongs to the technical field of powder metallurgy shaping machines. The shaping machine is characterized in that the feeding table is located between an upper die base and a lower die base of the shaping machine, and a middle die of the shaping machine is arranged in the feeding table; the feeding table is provided with a feeding base plate arranged in the X direction, the feeding base plate is divided into a feeding area and a discharging area with the middle die as the boundary, and the top of the middle die is flush with the top of the feeding base plate. The walking beam assembly comprises two walking beam bodies arranged in the X direction, and the two walking beam bodies are located on the two sides of the feeding base plate correspondingly. The positioning air cylinder is located above a feeding area of the feeding table. An output shaft of the positioning air cylinder moves up and down in the Z direction and is provided with a positioning rod matched with a workpiece auxiliary hole. The automatic feeding, positioning and discharging device is simple and reasonable in structure and easy to produce and manufacture, automatic feeding, automatic positioning and automatic discharging of powder metallurgy shaping machining are achieved, labor intensity is greatly reduced, and production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to an automatic feeding mechanism for a powder metallurgy sizing press, belonging to the technical field of powder metallurgy sizing presses. Background Art

[0002] Powder metallurgy uses metal powder as raw material, and after forming and sintering, a blank part is obtained. The blank part will have a small amount of deformation and burrs, so sizing processing is required.

[0003] In traditional powder metallurgy sizing processing technology, workpieces are placed one by one at the middle die of the sizing press manually, positioned manually, and then cold punched by the cooperation of the upper and lower die seats. After stamping, the workpieces are discharged manually. Manual feeding, manual positioning, and manual discharging are time-consuming and laborious, with a high error rate, and are also prone to safety hazards, increasing the labor intensity and reducing the work efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide an automatic feeding mechanism for a powder metallurgy sizing press aiming at the deficiencies of the above-mentioned prior art, realizing automatic feeding and automatic positioning in powder metallurgy sizing processing, so as to reduce the labor intensity, reduce the positioning error, and improve the work efficiency.

[0005] The purpose of the utility model is realized through the following technical solutions: an automatic feeding mechanism for a powder metallurgy sizing press, characterized by comprising a feeding table, a walking beam assembly, and a positioning cylinder.

[0006] The feeding table is located between the upper die seat and the lower die seat of the sizing press, and the middle die of the sizing press is built in the feeding table; taking the movement direction of the walking beam assembly as the X direction, the horizontal direction perpendicular to the movement direction of the walking beam assembly as the Y direction, and the vertical direction perpendicular to the movement direction of the walking beam assembly as the Z direction; the feeding table is provided with a feeding backing plate arranged along the X direction. Taking the middle die as the boundary, the feeding backing plate is divided into a feeding area and a discharging area, and the top of the middle die is flush with the top of the feeding backing plate.

[0007] The walking beam assembly includes two walking beam bodies arranged along the X direction, and are respectively located on both sides of the feeding backing plate; the two walking beam bodies are respectively slidably assembled with the feeding table, and a plurality of corresponding clamping fingers are respectively arranged at the relative positions, and the clamping fingers have structures matching the outer shape of the workpiece.

[0008] The positioning cylinder is located above the feeding area of the feeding table; the output shaft of the positioning cylinder moves up and down along the Z direction, and is provided with a positioning rod matching the process hole of the workpiece.

[0009] In the above solution, multiple pairs of grippers are arranged between the walking beam bodies. One pair of grippers corresponds to one working station, and the middle die is arranged in the middle section of the walking beam assembly, which can replace manual loading and unloading. After placing the workpiece on the loading pad, through the cooperation of the walking beam and the grippers, the workpiece is clamped and transferred to the next working station. After entering the middle die for shaping, the walking beam and the grippers cooperate again to convey the shaped workpiece to the unloading area.

[0010] In the above solution, in the feeding area, after a pair of grippers at the first working station clamp the workpiece, the positioning cylinder drives the positioning rod to descend and insert into the process hole of the workpiece. If it cannot be inserted smoothly, the workpiece is in an incorrect position, and there may be situations such as workpiece breakage, front and back inversion, incorrect placement direction, etc., which will affect the subsequent shaping process and need to be corrected in time. If it can be inserted smoothly, the workpiece positioning is completed, and then the positioning cylinder resets, and the walking beam sends the workpiece to the next working station.

[0011] Further, the loading table is also provided with an oil gushing component in the feeding area, including an oil gushing cavity built in the loading table, a servo pump, and an oil wiping block. The top of the oil gushing cavity is flush with the top of the loading pad. One end of the servo pump is connected to the fuel tank, and the other end is connected to the bottom of the oil gushing cavity. The oil wiping block is located in the oil gushing cavity, and its top is flush with the top of the loading pad.

[0012] In the above solution, after the workpiece is positioned, the walking beam assembly clamps the workpiece and passes through the oil gushing component. When the workpiece moves along the X direction, it is in instantaneous contact with the oil wiping block, so that the workpiece is smeared with grease before entering the middle die for shaping, which can reduce the friction during shaping and avoid unnecessary wear on the workpiece.

[0013] Further, several oil outlet fine holes are provided at the top of the oil wiping block, and multiple oil inlet thick holes are provided at the bottom, forming an oil passage that communicates up and down. The oil wiping block straddles the two sides in the Y direction at the top of the oil gushing cavity and keeps a distance from the two sides in the X direction at the top of the oil gushing cavity respectively. Multiple spaced overflow blind holes are provided at the two ends in the X direction of the oil wiping block, and an overflow through hole is provided at the end in the Y direction. The orifices of two adjacent overflow blind holes face in opposite directions. The oil outlet fine holes, the oil inlet thick holes, the overflow through hole, and the overflow blind holes are interconnected.

[0014] In the above solution, under the action of the servo pump, the grease in the oil gushing cavity is always surging. The grease smoothly enters the oil passage from the oil inlet thick holes and flows out after being pressurized by the oil outlet fine holes, ensuring that oil always comes out from the top of the oil wiping block. The oil wiping block keeps a distance from the two sides in the X direction at the top of the oil gushing cavity, forming an oil draining port. The side in the X direction at the top of the oil gushing cavity (the side close to the middle die) can scrape off the excess grease on the workpiece and flow back to the oil gushing cavity through this oil draining port.

[0015] Further, the top of the cavity wall of the oil gushing cavity is in the shape of a trumpet with a larger top and a smaller bottom, which is convenient for the excess grease scraped off from the workpiece to flow back to the oil gushing cavity.

[0016] Furthermore, the positioning cylinder is installed above the loading table through a portal-shaped bracket; the output shaft of the positioning cylinder is connected with a pressing plate, the pressing plate is connected with a pressing block, and the positioning rod is threadedly connected with the pressing block. The workpiece is positioned by the cooperation of the positioning rod and the process hole of the workpiece, and the positioning rod can be replaced according to the situation of the process hole of the workpiece.

[0017] The structure of the utility model is simple and reasonable, easy to manufacture, realizes automatic feeding, automatic positioning and automatic discharging of powder metallurgy shaping processing, greatly reduces the labor intensity and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the powder metallurgy shaping machine of the utility model;

[0019] Figure 2 is a schematic diagram of the automatic feeding mechanism of the utility model;

[0020] Figure 3 is Figure 2 the top view (removing the positioning cylinder);

[0021] Figure 4 is the top view of the oil gushing component in the utility model;

[0022] Figure 5 is the sectional view of the oil gushing component in the utility model;

[0023] Figure 6 is a schematic diagram of the positioning cylinder in the utility model;

[0024] Figure 7 is a schematic diagram of the oil wiping block in the utility model;

[0025] Figure 8 is the top view of the oil wiping block in the utility model;

[0026] Figure 9 is Figure 8 the sectional view taken along the line A-A in

[0027] Figure 10 is Figure 8 the sectional view taken along the line B-B in

[0028] In the figure: shaping machine 1, upper die base 2, middle die 3, loading table 4, loading backing plate 4-1, feeding area 4-1-1, discharging area 4-1-2, walking beam assembly 5, walking beam body 5-1, clamping fingers 5-2, positioning cylinder 6, pressing plate 6-1, pressing block 6-2, positioning rod 6-3, portal-shaped bracket 7, oil gushing cavity 8, servo pump 9, oil wiping block 10, oil outlet fine hole 10-1, oil inlet thick hole 10-2, overflow blind hole 10-3, overflow through hole 10-4, oil draining port 11, workpiece 12. Detailed implementation mode

[0029] A powder metallurgy sizing machine 1, as Figure 1 shown, includes an upper die holder 2, a middle die 3, a lower die holder, and an automatic feeding mechanism. Among them, the automatic feeding mechanism, as Figure 2 shown, includes a feeding table 4, a walking beam assembly 5, and a positioning cylinder 6.

[0030] The feeding table 4 is located between the upper die holder and the lower die holder of the sizing machine. The middle die 3 of the sizing machine is built into the feeding table. The feeding table is provided with a feeding backing plate 4-1 arranged along the X direction. Taking the middle die 3 as the boundary, the feeding backing plate is divided into a feeding area 4-1-1 and a discharging area 4-1-2. The top of the middle die is flush with the top of the feeding backing plate.

[0031] The walking beam assembly 5, as Figure 3 shown, includes two walking beam bodies 5-1 arranged along the X direction and located on both sides of the feeding backing plate respectively; the two walking beam bodies are respectively slidably assembled with the feeding table, and a plurality of corresponding clamp fingers 5-2 are respectively arranged at the relative positions. The clamp fingers have a structure matching the shape of the workpiece.

[0032] As Figure 2 shown, the positioning cylinder 6 is installed above the feeding table through a portal bracket 7. As Figure 6 shown, the output shaft of the positioning cylinder moves up and down. The output shaft is connected with a pressing plate 6-1. The pressing plate is connected with a pressing block 6-2. The positioning rod 6-3 is threadedly connected with the pressing block. The positioning of the workpiece is realized by the cooperation of the positioning rod and the process hole of the workpiece.

[0033] In an embodiment of the present utility model, as Figure 5 shown, the feeding table is further provided with an oil gushing component in the feeding area, including an oil gushing cavity 8 built into the feeding table, a servo pump 9, and an oil wiping block 10. The top of the oil gushing cavity is flush with the top of the feeding backing plate. One end of the servo pump is connected to the fuel tank, and the other end is connected to the bottom of the oil gushing cavity; the oil wiping block is located in the oil gushing cavity, and its top is flush with the top of the feeding backing plate.

[0034] In an embodiment of the present utility model, as Figure 4 shown, the oil wiping block straddles the two sides in the Y direction of the top of the oil gushing cavity and keeps a distance from the two sides in the X direction of the top of the oil gushing cavity respectively, forming an oil draining port 11. The excess grease on the workpiece can be scraped off by one side edge of the top of the oil gushing cavity close to the middle die and flows back to the oil gushing cavity through this oil draining port. The top of the cavity wall of the oil gushing cavity is in the shape of a trumpet with a large top and a small bottom, which is convenient for the excess grease scraped off from the workpiece to flow back to the oil gushing cavity.

[0035] In an embodiment of the present utility model, as Figures 7 - 10As shown, a number of fine oil outlet holes 10-1 are provided at the top of the oiling block, a number of thick oil inlet holes 10-2 are provided at the bottom, a number of overflow blind holes 10-3 arranged at intervals are provided at both ends in the X direction, and an overflow through hole 10-4 is provided at the end in the Y direction. The orifice directions of two adjacent overflow blind holes are opposite; the fine oil outlet holes, the thick oil inlet holes, the overflow through holes and the overflow blind holes are interconnected to form an oil passage.

Claims

1. An automatic feeding mechanism for a powder metallurgy sizing machine, characterized in that, Comprising: A loading table, located between the upper die base and the lower die base of the shaping machine, and the middle die of the shaping machine is built into the loading table; the loading table is provided with a loading backing plate arranged along the X direction. Taking the middle die as the boundary, the loading backing plate is divided into a feeding area and a discharging area, and the top of the middle die is flush with the top of the loading backing plate; A walking beam assembly, including two walking beam bodies arranged along the X direction and located on both sides of the loading backing plate respectively; the two walking beam bodies are respectively slidably assembled with the loading table, and a plurality of corresponding tong fingers are respectively arranged at the relative positions; A positioning cylinder, located above the feeding area of the loading table; the output shaft of the positioning cylinder moves along the Z direction and is provided with a positioning rod matching the process hole of the workpiece.

2. The automatic feeding mechanism of a powder metallurgy shaping machine according to claim 1, characterized in that, The loading table is further provided with an oil gushing assembly in the feeding area, including: An oil gushing cavity, built into the loading table, and its top is flush with the top of the loading backing plate; A servo pump, with one end connected to the fuel tank and the other end connected to the bottom of the oil gushing cavity; An oil wiping block, located in the oil gushing cavity, and its top is flush with the top of the loading backing plate.

3. The automatic feeding mechanism of a powder metallurgy shaping machine according to claim 2, characterized in that, The top of the oil wiping block is provided with a number of fine oil outlet holes, and the bottom is provided with a plurality of thick oil inlet holes to form an oil passage communicating up and down; the oil wiping block straddles the two sides in the Y direction at the top of the oil gushing cavity and keeps a distance from the two sides in the X direction at the top of the oil gushing cavity respectively.

4. The automatic feeding mechanism of a powder metallurgy shaping machine according to claim 3, characterized in that, The top of the cavity wall of the oil gushing cavity is in the shape of a horn with a large top and a small bottom.

5. The automatic feeding mechanism of a powder metallurgy shaping machine according to claim 3, characterized in that, Both ends of the oil wiping block in the X direction are provided with a plurality of spaced overflow blind holes, and the end in the Y direction is provided with an overflow through hole, and the orifices of two adjacent overflow blind holes face in opposite directions; the fine oil outlet holes, the thick oil inlet holes, the overflow through hole and the overflow blind holes are interconnected.

6. The automatic feeding mechanism of a powder metallurgy sizing machine according to claim 1, wherein The positioning cylinder is installed above the loading table through a portal bracket; the output shaft of the positioning cylinder is connected with a pressing plate, the pressing plate is connected with a pressing block, and the positioning rod is threadedly connected with the pressing block.

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