CN214108785U - Automatic semi-shaping hydraulic press for powder metallurgy - Google Patents

Abstract

The utility model belongs to powder metallurgy equipment field, concretely relates to automatic half plastic hydraulic press of powder metallurgy. The blank pushing device is positioned below the material channel and is horizontal to the material conveying channel, the material conveying channel and the blank pushing device are fixed on the feeding plate, and the blank pushing device is used for pushing a blank into the material conveying channel and then entering the shaping device; the shaping device comprises an upper punch and a lower die assembly, the upper punch sequentially comprises an upper movable beam, an upper template and a combined upper die from top to bottom, an opening I corresponding to the upper movable beam is formed in the conveying channel, the lower die assembly comprises a workbench, and a groove is formed in the workbench. The utility model discloses the scale is moderate, simple structure, and the overall arrangement is ingenious, and application scope is wider, collects material loading, plastic, ejection of compact in an organic whole, and degree of mechanization is high.

Description

Automatic semi-shaping hydraulic press for powder metallurgy

Technical Field

The utility model belongs to powder metallurgy equipment field, concretely relates to automatic half plastic hydraulic press of powder metallurgy.

Background

Powder metallurgy is a process technology for manufacturing metal materials, composite materials and various products by using metal powder as a raw material and performing forming, sintering and shaping. The powder metallurgy technology has wide application range, can be directly molded, basically does not need secondary processing, can reduce the material cost and the processing cost, improves the productivity, and is widely applied to the mechanical processing industry. However, during powder forming, the friction between the powder particles and the die wall hinder the filling of the cavity of the die, thereby affecting the uniformity of the density distribution of the green compact. In the process of sintering, the parts can have the problems of uneven shrinkage, distortion, deformation and the like, for a part of products with high processing precision requirements, a shaping process needs to be added after forming, namely a repressurization process for qualified powder metallurgy parts, namely finishing, also called powder metallurgy shaping, namely putting the powder metallurgy sintered body into a die again for compression, so as to obtain the determined size and shape. In the shaping process, the factors influencing the dimensional accuracy of the part are as follows: the radial and longitudinal density distribution of the part, the material strength of the part, the structure of the sizing die, etc.

The shaped powder metallurgy parts will be more regular, the dimensional tolerances will be better and the surface finish will be improved. The existing equipment is large in size, complex in structure and inconvenient to use, and for enterprises with small scale, the production cost of the large-scale equipment is undoubtedly increased.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the invention provides the automatic semi-shaping hydraulic machine for powder metallurgy, which is simple in structure, moderate in scale and reasonable in layout, integrates the functions of feeding, shaping and discharging, is high in mechanization degree, and improves the production efficiency of enterprises.

1. The utility model provides a technical scheme does: the utility model provides an automatic hydraulic half-shaping machine of powder metallurgy which characterized in that: the blank pushing device is positioned below the material channel and is horizontal to the material conveying channel, the material conveying channel and the blank pushing device are fixed on the feeding plate, and the blank pushing device is used for pushing a blank into the material conveying channel and then entering the shaping device; the shaping device comprises a pre-shaping mandrel, an upper punch and a lower die assembly, wherein the upper punch sequentially comprises an upper movable beam, an upper die plate and a combined upper die from top to bottom, the pre-shaping mandrel is positioned at the edge of the upper die plate close to a material channel, the pre-shaping mandrel, the upper punch and the material channel are longitudinally parallel, an opening I and an opening II corresponding to the pre-shaping mandrel and the upper punch are respectively arranged on the conveying material channel, the lower die assembly comprises a workbench, a groove is formed in the workbench, a supporting plate is arranged in the groove and used for supporting two demolding clamping plates fixed at the upper part of the supporting plate, the two demolding clamping plates are oppositely arranged on the supporting plate and fixedly connected with the inner wall of the groove through a pressure spring, a female die plate is fixed on the demolding clamping plates, a female die is arranged in the middle of the female die plate, the female die vertically penetrates through a feeding plate and the female die plate and is arranged below the female die, through holes communicated with the female die are formed in corresponding positions in the supporting plate and the workbench, the upper opening of the female die is communicated with the conveying channel, the two demolding clamping plates are located below the female die, funnel-shaped round holes are formed in the ends, close to the through holes, of the two demolding clamping plates, and the round holes are smaller than the size of the blank.

The scheme is further optimized and improved: and through holes are also formed in the feeding plate and the female die plate, penetrate through the feeding plate and the female die plate, are positioned under the opening II and are matched with the pre-finishing mandrel.

The scheme is further optimized and improved: the combined upper die comprises an upper die and an upper die core rod fixed below the upper die.

The scheme is further optimized and improved: the blank pushing device is a blank pushing cylinder which is a double-ejection-rod piston cylinder, an upper ejection piston rod of the blank pushing device is a material pushing rod, the material pushing rod is located in the material conveying channel and reciprocates in the material conveying channel, and one end of a lower ejection piston rod of the blank pushing cylinder is provided with an ejection adjusting device. The ejection adjusting device enables the material pushing rod to push out one blank at a time.

The scheme is further optimized and improved: and a sliding plate is further fixed in the press workbench and is obliquely arranged below the female die.

The scheme is further optimized and improved: and a product turnover box is arranged below the sliding plate.

The scheme is further optimized and improved: and a press foot is fixed below the workbench.

Compared with the prior art, the utility model discloses the beneficial effect who brings does:

1. the scale is moderate, moreover, the steam generator is simple in structure, the layout is ingenious, the application scope is wider, the material loading is collected, the shaping and the discharging are integrated, the mechanization degree is high, the blank body is pressed down through the combined upper die, the blank body is pressed down the demolding clamping plate again, in the shaping, gaps formed by the demolding pressing plate are larger and larger until the blank body is clamped at the shaft shoulder of the combined upper die, the blank body is positioned below the demolding clamping plate at the moment, after the shaping is completed, the upper die is punched and moved upwards, the blank body is rolled down by the demolding clamping plate and then falls onto the sliding plate, and then the sliding plate slides downwards to the product collecting box, at the moment, the demolding pressing plate returns to the initial position under the action of the pressure spring, the shaping and the discharging are integrated into one, and the conception is ingenious.

2. By arranging the pre-shaping core rod, the internal control of the blank with the hole can be pre-shaped, and then the blank is contracted and the inner hole is shaped for the second time by the upper stamping and the lower die assembly, so that the shaping quality is improved.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a top view of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.

As shown in fig. 1 and 2, the automatic semi-shaping hydraulic machine for powder metallurgy comprises a material channel 1, a conveying material channel 2, a blank pushing device 3, a feeding plate 4 and a shaping device 5, wherein the material channel 1 is vertically arranged on the conveying material channel 2, and the two are communicated, the blank pushing device 3 is positioned below the material channel 1 and is horizontal to the conveying material channel 2, the conveying material channel 2 and the blank pushing device 3 are fixed on a feeding plate, the blank pushing device 3 is used for pushing blanks into the conveying material channel 2 and then into the shaping device 5, the blank pushing device 3 is a blank pushing cylinder, which is a double-piston-rod piston cylinder, the upper piston rod of the double-piston-rod piston cylinder is a material pushing rod 31, the material pushing rod 31 is positioned in the material conveying channel 2, and reciprocating in the conveying channel 2, one end of a lower piston rod 32 of the blank pushing cylinder 3 is provided with an ejection adjusting device 33, the ejection adjusting device is an adjusting nut to realize the adjustment of the return limit of the blank pushing cylinder 3.

The shaping device 5 comprises an upper punch 6 and a lower die assembly 7, wherein the upper punch 6 sequentially comprises an upper movable beam 61, an upper die plate 62 and a combined upper die 63 from top to bottom, the combined upper die 63 comprises a thick upper die on the upper portion and a thin lower die fixed below the thick lower die, a pre-shaping core rod 66 is further fixed at the edge of the upper die plate 62 and specifically located at the edge close to the material channel 1, the pre-shaping core rod, the upper punch and the material channel are longitudinally parallel, and an opening I21 and an opening II 22 corresponding to the upper punch 6 and the pre-shaping core rod 66 are formed in the conveying material channel 2.

The combined upper die 63 comprises an upper die 64 and an upper die core rod 65 fixed below the upper die, an opening I21 is formed in the conveying channel 2 and corresponds to the combined upper die 63, the lower die assembly 7 is fixed on the workbench 8, a groove is formed in the workbench 8, a supporting plate 9 is arranged in the groove, the supporting plate 9 is used for supporting the demolding clamping plates 10 fixed above the supporting plate, the two demolding clamping plates are oppositely arranged on the supporting plate, the demolding clamping plates 10 are fixedly connected with the inner wall of the groove through pressure springs 11, a female die plate 12 is fixed above the demolding clamping plates 10, a female die 13 is arranged in the middle of the female die plate 12, the female die 13 vertically penetrates through the feeding plate 4 and the female die plate 12, through holes 131 communicated with the female die are formed in corresponding positions in the supporting plate 9 and the workbench 8 below the female die 13, an opening on the female die 13 is communicated with the conveying channel 2, and the two demolding clamping plates are positioned below the female die, and funnel-shaped round holes are formed at one ends of the two demoulding clamping plates 10 close to the through holes 131, the round holes are smaller than the size of the blank, and the funnel-shaped round holes are through holes for the blank to pass through.

A sliding plate 15 is further fixed in the press workbench 8, the sliding plate 15 is obliquely arranged below the female die 13 and used for receiving shaped blanks falling from the female die 13, the blanks slide down along the sliding plate 15 to a product turnover box 16 located below the sliding plate, extra power is not needed in the process, the production cost of an enterprise is further reduced, and a press machine foot 17 is fixed below the workbench 8 and used for supporting the whole device.

The utility model discloses a theory of operation does: blank with inner hole falls into the material conveying channel from the material channel, the material pushing rod pushes the entering blank into a distance of the blank, the distance between the opening I and the material channel outlet is just the distance of a plurality of blanks, the material pushing rod sequentially pushes the blank entering the material conveying channel towards the opening I until the first blank is just under the opening I, at the moment, the pre-shaping core rod moves downwards until the blank passes through the inner hole of the blank, the pre-shaping core rod moves upwards after the pre-shaping of the inner hole is completed, the blank after the pre-shaping generates a certain expansion, the material pushing rod continues to push the sequentially arranged blanks to push towards the opening II, when the pre-shaped blank reaches under the opening II, the upper die punches down the lower die, the fine upper die of the combined upper die penetrates through the inner hole, the upper surface of the blank is abutted against the lower surface of the coarse upper die, the upper die punches down continuously, the blank body on the thin lower die slowly passes through a gap between the demoulding clamping plates, the blank body which is expanded after pre-shaping is contracted in the process, the inner hole is shaped for the second time, the blank body completely passes through the demoulding clamping plates, the demoulding clamping plates are clamped at the lower end of the thick upper die at the moment, the shaping is completed, the upper punch is moved upwards, the demoulding clamping plates roll off the blank body, the blank body falls onto the sliding plate, and finally the blank body slides into a product turnover box.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes or modifications may be made by the patentees within the scope of the appended claims, and within the scope of the invention, as long as they do not exceed the scope of the invention described in the claims.

Claims (7)

1. The utility model provides an automatic hydraulic half-shaping machine of powder metallurgy which characterized in that: the blank pushing device is positioned below the material channel and is horizontal to the material conveying channel, the material conveying channel and the blank pushing device are fixed on the feeding plate, and the blank pushing device is used for pushing a blank into the material conveying channel and then entering the shaping device; the shaping device comprises a pre-shaping mandrel, an upper punch and a lower die assembly, wherein the upper punch sequentially comprises an upper movable beam, an upper die plate and a combined upper die from top to bottom, the pre-shaping mandrel is positioned at the edge of the upper die plate close to a material channel, the pre-shaping mandrel, the upper punch and the material channel are longitudinally parallel, an opening I and an opening II corresponding to the pre-shaping mandrel and the upper punch are respectively arranged on the conveying material channel, the lower die assembly comprises a workbench, a groove is formed in the workbench, a supporting plate is arranged in the groove and used for supporting two demolding clamping plates fixed at the upper part of the supporting plate, the two demolding clamping plates are oppositely arranged on the supporting plate and fixedly connected with the inner wall of the groove through a pressure spring, a female die plate is fixed on the demolding clamping plates, a female die is arranged in the middle of the female die plate, the female die vertically penetrates through a feeding plate and the female die plate and is arranged below the female die, through holes communicated with the female die are formed in corresponding positions in the supporting plate and the workbench, the upper opening of the female die is communicated with the conveying channel, the two demolding clamping plates are located below the female die, funnel-shaped round holes are formed in the ends, close to the through holes, of the two demolding clamping plates, and the round holes are smaller than the size of the blank.

2. The automatic semi-shaping hydraulic machine for powder metallurgy according to claim 1, characterized in that: and through holes are also formed in the feeding plate and the female die plate, penetrate through the feeding plate and the female die plate, are positioned under the opening II and are matched with the pre-finishing mandrel.

3. The automatic semi-shaping hydraulic machine for powder metallurgy according to claim 1, characterized in that: the combined upper die comprises an upper die and an upper die core rod fixed below the upper die.

4. The automatic semi-shaping hydraulic machine for powder metallurgy according to claim 1, characterized in that: the blank pushing device is a blank pushing cylinder which is a double-ejection-rod piston cylinder, an upper ejection piston rod of the blank pushing device is a material pushing rod, the material pushing rod is located in the material conveying channel and reciprocates in the material conveying channel, and one end of a lower ejection piston rod of the blank pushing cylinder is provided with an ejection adjusting device.

5. The automatic semi-shaping hydraulic machine for powder metallurgy according to claim 1, characterized in that: and a sliding plate is further fixed in the workbench and is obliquely arranged below the female die.

6. The automatic semi-shaping hydraulic machine for powder metallurgy according to claim 5, characterized in that: and a product turnover box is arranged below the sliding plate.

7. The automatic semi-shaping hydraulic machine for powder metallurgy according to claim 1, characterized in that: and a press foot is fixed below the workbench.

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