CN215144692U

CN215144692U - Powder metallurgy die for manufacturing connecting plate

Info

Publication number: CN215144692U
Application number: CN202121533209.6U
Authority: CN
Inventors: 蓝楷; 李宁
Original assignee: Shijiazhuang Jingshi New Material Technology Co ltd
Current assignee: Shijiazhuang Jingshi New Material Technology Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-14
Anticipated expiration: 2031-07-07

Abstract

The utility model provides a powder metallurgy die for making connecting plate belongs to powder metallurgy technical field, including the shaping bed die and with the chamber in the shaping bed die cooperatees and forms the shaping upper punch, the shaping of connecting plate die cavity down and the shaping mandrel subassembly, its characterized in that: the forming core rod assembly comprises a first core rod, a second core rod and a third core rod, wherein the first core rod penetrates through the lower forming punch and is matched with the upper forming punch to form a threading hole in the connecting plate, the second core rod penetrates through the lower forming punch and is matched with the upper forming punch to form a connecting hole in the connecting plate, and the third core rod penetrates through the lower forming punch and is matched with the upper forming punch to form a threaded bottom hole in the connecting plate. The utility model discloses a mould passes through powder metallurgy technique, can improve connecting plate suppression yield effectively, improves work efficiency, reduces working strength and cost of labor for economic benefits is showing and is improving.

Description

Powder metallurgy die for manufacturing connecting plate

Technical Field

The utility model belongs to the technical field of powder metallurgy, concretely relates to powder metallurgy die for making connecting plate.

Background

Powder metallurgy is a process technology for preparing metal powder or using metal powder (or a mixture of metal powder and nonmetal powder) as a raw material to prepare metal materials, composite materials and various products through forming and sintering, has the advantages of energy and material saving, excellent performance, high product precision, good quality stability and high and low emission, and is widely applied to the fields of mechanical manufacturing, aerospace and the like.

In the control cabinet, in order to facilitate installation and connection of control devices, a large number of connecting plates are required, the existing connecting plates are manufactured in a machining mode, the number of required manufacturing links is large, and more labor cost is required.

Disclosure of Invention

The to-be-solved problem of the utility model is to provide a powder metallurgy die for making connecting plate, realize the batch production of connecting plate through the powder metallurgy technique, only need a small amount of manual works to form the finished product after the manufacturing is accomplished to improve the production efficiency of connecting plate, reduced the cost of labor.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a powder metallurgy die for making connecting plate, including the shaping bed die and with the chamber in the shaping bed die cooperatees and forms the shaping upper punch, the shaping of connecting plate die cavity down and the shaping mandrel subassembly, its characterized in that: the shaping mandrel subassembly is including passing under the shaping punch and with the shaping upper punch cooperatees and forms the first mandrel of through wires hole in the connecting plate, pass under the shaping punch and with the shaping upper punch cooperatees and forms the second mandrel of connecting hole in the connecting plate and pass under the shaping punch and with the shaping upper punch cooperatees and forms the third mandrel of screw bottom hole in the connecting plate, first mandrel is followed the length direction of connecting plate die cavity is provided with 2 side by side, the second mandrel is followed the length direction of connecting plate die cavity is provided with 2 side by side, the third mandrel is located between 2 first mandrels.

Furthermore, the connecting hole is a counter bore, and a conical bulge for forming the counter bore is arranged on the molding lower punch.

Further, the height of the conical protrusions is 5.5 mm.

Further, the unilateral assembly gap between the second core rod and the lower forming punch is 0.015-0.02 mm.

Further, the unilateral assembly gap between the first core rod and the forming upper punch is 0.02-0.025 mm.

Furthermore, the first core rod, the second core rod and the third core rod are fixed on the lower base through the connecting plate.

Further, the top of the forming upper punch is connected with the upper base.

The utility model has the advantages that: through the powder metallurgy technology, the pressing yield of the connecting plates can be effectively improved, the working efficiency is improved, the working strength and the labor cost are reduced, and the economic benefit is obviously improved.

The present invention will be described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a connecting plate pressed by a metallurgical die of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural view of the metallurgical mold of the present invention;

FIG. 4 is a front view of the forming upper punch in the metallurgical die of the present invention;

FIG. 5 is a rear view of FIG. 4;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 7 is a front view of the forming upper punch in the metallurgical die of the present invention;

FIG. 8 is a rear view of FIG. 7;

FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;

fig. 10 is a schematic view showing the installation of each mandrel and the lower base according to the present invention.

In the drawings: 1 is a first core rod, 2 is a forming female die, 3 is a forming upper punch, 3-1 is an exhaust hole, 4 is a second core rod, 5 is a forming lower punch, 5-1 is a conical bulge, 6 is a third core rod, 7 is a lower base, 8 is an upper base, and 9 is a connecting plate.

Detailed Description

Referring to fig. 3, the utility model provides a powder metallurgy die for making connecting plate, including the shaping bed die 2 and with the chamber in the shaping bed die 2 cooperatees and forms the shaping upper punch 3, the shaping lower punch 5 and the shaping mandrel subassembly of connecting plate die cavity. The connection plates as shown in fig. 1 and 2 were pressed by powder metallurgy techniques. In the actual use process, the forming female die 2 and the forming mandrel component are driven to lift synchronously, and the forming upper punch 3 and the forming lower punch 5 are respectively provided with a matched driving device.

Referring to fig. 3 to 10, the forming mandrel assembly includes a first mandrel 1 passing through the lower forming punch 5 and cooperating with the upper forming punch 3 to form a threading hole in the connecting plate, a second mandrel 4 passing through the lower forming punch 5 and cooperating with the upper forming punch 3 to form a connecting hole in the connecting plate, and a third mandrel 6 passing through the lower forming punch 5 and cooperating with the upper forming punch 3 to form a threading hole in the connecting plate. Through holes matched with the three core rods are formed in the lower forming punch 5 and the upper forming punch 3. The top of the shaped upper punch 3 is connected to the upper base 8. Because the upper base 8 seals the through hole of the upper punch, the side wall of the upper punch is provided with the vent hole 3-1 communicated with the through hole.

The number of the first core rods 1 and the number of the second core rods 4 are 2 and are arranged side by side along the length direction of the connecting plate cavity and are arranged symmetrically with the center of the connecting plate cavity. The distances between the first core rod 1 and the second core rod 4 which are positioned on the same side of the symmetrical center of the connecting plate cavity and the symmetrical center are the same. The third core rod 6 is positioned at the intersection of the circle center connecting line of the 2 first core rods 1 and the symmetrical center line. The two connecting holes and the two threading holes are arranged in a rectangular shape in the connecting plate cavity.

The connecting hole is a counter bore, and a conical bulge 5-1 for forming the counter bore is arranged on the top surface of the lower molding punch 5. The height of the conical projection 5-1 is 5.5 mm.

Because the first core rod 1, the second core rod 4 and the third core rod 6 are lifted synchronously, the three core rods are fixed on the lower base 7 by the connecting plate 9 and the matched connecting bolt so as to be connected with the matched driving device. Specifically, the first core rod 1, the second core rod 4 and the third core rod 6 upwards penetrate through a matched stepped hole in the lower base 7, the bottom of the first core rod is limited in the stepped hole of the lower base 7, and then the connecting bolt penetrates through the lower base 7 and is in threaded connection with the connecting plate 9 to achieve fixing of the core rods.

The unilateral assembly clearance between the second core rod 4 and the lower forming punch 5 is 0.015-0.02 mm. The unilateral assembly clearance between the first core rod 1 and the upper forming punch 3 is 0.02-0.025 mm.

In each part of the die, the material of the forming female die 2 is 40Cr, the material of the forming lower punch 5 and the forming upper punch 3 is Cr12MoV, the material of the lower base 7 and the upper base 8 is 40Cr or No. 45 steel, and the material of the first core rod 1, the material of the second core rod 4 and the material of the third core rod 6 are Cr12 MoV.

The utility model discloses a mould working process as follows: in the initial state, the top surfaces of the three core rods are flush with the top surface of the female forming die 2. The lower forming punch 5 rises to form a powder filling cavity together with the female forming die 2 and the three core rods, then powder is added into the powder filling cavity, and then the upper forming punch 3 descends to enable the end part of the upper forming punch to enter the cavity to be matched with the lower forming punch 5 to be pressed into the connecting plate.

And after the compression molding is finished, demolding is started. In the demoulding process, the forming upper punch 3 moves upwards to reset, and the forming female die 2 and the three core rods descend simultaneously to enable the connecting plate to be separated from the die cavity.

And finally, the finished connecting plate is manufactured by the connecting plate after being processed through the procedures of sintering, deburring, processing threaded holes and the like.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides a powder metallurgy die for making connecting plate, including shaping bed die (2) and with the chamber in shaping bed die (2) cooperatees and forms shaping upper punch (3), shaping lower punch (5) and the shaping mandrel subassembly of connecting plate die cavity, its characterized in that: the forming mandrel assembly comprises a first mandrel (1) which penetrates through a lower forming punch (5) and is matched with an upper forming punch (3) to form a threading hole in a connecting plate, a second mandrel (4) which penetrates through the lower forming punch (5) and is matched with the upper forming punch (3) to form a connecting hole in the connecting plate, and a third mandrel (6) which penetrates through the lower forming punch (5) and is matched with the upper forming punch (3) to form a threaded bottom hole in the connecting plate, wherein the first mandrel (1) is arranged in number of 2 in parallel along the length direction of a cavity of the connecting plate, the second mandrel (4) is arranged in number of 2 in parallel along the length direction of the cavity of the connecting plate, and the third mandrel (6) is positioned between the 2 first mandrels (1).

2. The powder metallurgy die according to claim 1, wherein: the connecting hole is a counter bore, and a conical bulge (5-1) for forming the counter bore is arranged on the molding lower punch (5).

3. The powder metallurgy die according to claim 2, wherein: the height of the conical bulge (5-1) is 5.5 mm.

4. The powder metallurgy die according to claim 1, wherein: and the unilateral assembly clearance between the second core rod (4) and the lower forming punch (5) is 0.015-0.02 mm.

5. The powder metallurgy die according to claim 1, wherein: the unilateral assembly gap between the first core rod (1) and the forming upper punch (3) is 0.02-0.025 mm.

6. The powder metallurgy die according to any one of claims 1 to 5, wherein: the first core rod (1), the second core rod (4) and the third core rod (6) are fixed on the lower base (7) through the connecting plate (9).

7. The powder metallurgy die according to any one of claims 1 to 5, wherein: the top of the forming upper punch (3) is connected with an upper base (8).