CN103624201B - High line diameter ratio T iron head combination die - Google Patents

Abstract

The present invention relates to a combination die with high wire-diameter ratio T-iron head, aiming to provide a combination die with simple structure and capable of completing the traditional two previous processes. The middle part of the lower mold core is provided with a forming hole. The upper part of the forming hole is conical with a large upper part and the lower part is cylindrical. Below the forming hole of the mold core; the upper mold is composed of a punch and a second punch, wherein the middle part of the first punch is provided with a tapered hole with a large bottom and a small top, and the diameter of the lower port of the tapered hole is slightly larger than the outer diameter of the wire to be punched. The diameter is abbreviated; the second die is composed of the main body of the upper die and the upper die core. The upper die core is embedded in the upper die main body. The central axes of the tapered hole and the conical concave part are consistent with the central axis of the forming hole during forming; the invention is used for processing T iron.

Description

High wire diameter ratio T iron head combination die

technical field

The invention relates to the T-iron processing technology in electroacoustics, more specifically, it relates to a high-diameter-ratio T-iron head combination die.

Background technique

In the traditional T-iron processing technology, for T-iron products with a high wire-to-diameter ratio greater than 4:1, four sets of molds are used for processing. The general process is the four processes of heading, shaping, flattening, and forming. , each process requires a dedicated mold. This traditional process has the disadvantages of many processes and high production cost, and there is a need for improvement.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-diameter-ratio T-iron combined die with a simple structure and capable of completing the traditional two previous processes in view of the above-mentioned shortcomings of the prior art.

The technical scheme of the present invention is as follows: a high-diameter-ratio T-iron head combination mold includes a lower mold and an upper mold, wherein the lower mold is composed of a lower mold main body, a lower mold core and a push rod, and the lower mold The core is embedded in the main body of the lower mold, and the upper surface of the lower mold core and the lower mold main body is located on the same plane; the middle part of the lower mold core is provided with a forming hole, and the upper part of the forming hole is conical with a large upper part and a smaller lower part. It is cylindrical, and the depth of the cylindrical part is 1.5 ~ 3mm; the ejector rod is movably penetrated from the bottom of the main body of the lower mold to its upper end surface and is located below the forming hole of the lower mold core; the upper mold is composed of a die and two The middle part of the first die is provided with a tapered hole with a lower part and an upper part, and the diameter of the lower port of the tapered hole is slightly larger than the outer diameter of the wire to be punched; the second die is composed of the main body of the upper die and the upper part. The mold core is composed of the upper mold core embedded in the main body of the upper mold. In the middle of the upper mold core, there is a conical concave part with a large bottom and a small top. The central axis is consistent.

Further, in the above-mentioned combination die with high wire-to-diameter ratio T-iron head, the cylindrical depth of the lower part of the forming hole is 2mm.

In the above combined die with high line diameter ratio T-iron head, the upper die core and the lower surface of the upper die main body are located on the same plane.

Compared with the prior art, the present invention has the following advantages:

Adopting the combination mold of the present invention can complete the two processes of starting and shaping in the traditional process, reducing the original four processes to three processes for the whole T iron processing, greatly saving production costs and improving production efficiency.

Description of drawings

The present invention will be described in further detail below in conjunction with the specific embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

Fig. 1 is one of structural representation of the present invention;

Fig. 2 is the second structural representation of the present invention;

Fig. 3 is one of working status schematic diagrams of the present invention;

Fig. 4 is the second schematic view of the working state of the present invention.

Among the figure: lower die 1, lower die main body 11, lower die core 12, forming hole 12a, ejector pin 13, first die 2, tapered hole 2a, second die 3, upper die main body 31, upper die core 32, conical Recess 32a, workpiece 4.

detailed description

Referring to Fig. 1 and shown in Fig. 2, the high wire-to-diameter ratio T-iron combined die of the present invention comprises a lower die 1 and an upper die, and the lower die 1 described in a specific embodiment of the present invention is composed of a lower die main body 11, The lower mold core 12 and the ejector pin 13 are formed, and the lower mold core 12 is processed with an alloy material with higher strength and hardness to ensure the service life of the mould; the lower mold core 12 is embedded in the lower mold body 11, and the lower mold core 12 Located on the same plane as the upper surface of the lower mold body 11; the middle part of the lower mold core 12 is provided with a forming hole 12a, the upper part of the forming hole 12a is conical, the lower part is cylindrical, and the cylindrical part The depth is 1.5-3mm, preferably 2mm, and its purpose is to form a positioning foot during a punch; the ejector pin 13 is movably penetrated from the bottom of the lower die main body 11 and its upper end surface is located below the forming hole 12a of the lower die core 12; The upper die is composed of a die 2 and a die 3, wherein the middle part of the die 2 is provided with a tapered hole 2a with a lower part and an upper part, and the diameter of the lower port of the tapered hole 2a is slightly larger than that of the wire to be punched. The outer diameter; the second die 3 is composed of an upper die main body 31 and an upper die core 32, and the upper die core 32 is embedded in the upper die main body 31, and the upper die core 32 middle part is provided with a lower large upper upper small The conical concave portion 32a, the central axis of the conical hole 2a and the conical concave portion 32a are consistent with the central axis of the forming hole 12a during stamping; the upper mold core 32 and the lower surface of the upper mold body 31 on the same plane.

During specific use of the present invention, referring to Fig. 3, shown in Fig. 4, head-starting process just can be realized directly on the header of circular shears, and what feeding of the header of circular shears is manipulator, when manipulator feeds into lower die 1, a die 2 When calling, the manipulator has not been released yet, and the positioning pin of the workpiece 4 is squeezed out by the die 2 in an instant, and the positioning pin is used for positioning. Let the bar material be stuck in the lower die 1, and after the first die 2 is returned, it is converted into the second die 3 and quickly punched to form a shape of a mushroom head, which is equivalent to the completion of the head and shaping process of the traditional technology, which greatly improves the processing efficiency.

Taking the craft product PL0014062220S T iron product as an example, the weight of the product is 79g, the diameter of the column core is φ13.95, the length of the cutting material is 73 long, and the ratio of material height to diameter exceeds 5:1. Realize, adopt the mold of the present invention, use big wire rod 19.3mm, be processed into the shape of mushroom head through the mold of the present invention, the lower part has the locating foot of diameter φ 13.5mm, 2mm long, ejects workpiece by ejector rod 13 after completion 4. The lower flattening process can be carried out.

Claims (1)

1. a kind of high wire-diameter ratio T iron head combination mold, comprises counterdie (1) and patrix, it is characterized in that, described counterdie (1) is made of counterdie main body (11), counterdie core (12 ) and push rod (13), the lower mold core (12) is embedded in the lower mold body (11), and the upper surface of the lower mold core (12) and the lower mold body (11) is on the same plane; the lower mold The middle part of the core (12) is provided with a forming hole (12a). The upper part of the forming hole (12a) is conical with a large upper part and a smaller lower part, and the lower part is cylindrical. The depth of the cylindrical part is 1.5-3 mm; Rod (13) movably penetrates from the bottom of the lower die main body (11) and its upper end surface is located below the forming hole (12a) of the lower die core (12); the upper die is composed of a die (2) and a die (3) ), wherein the middle part of a die (2) is provided with a tapered hole (2a) with a large bottom and a small top, and the diameter of the lower port of the tapered hole (2a) is slightly larger than the outer diameter of the wire to be punched; the two Punch die (3) is made of upper die main body (31) and upper die core (32) again, and described upper die core (32) is embedded in the upper die main body (31), and is set in the upper die core (32) middle part There is a conical recess (32a) with a large bottom and a small top. When stamping and forming, the central axes of the tapered hole (2a) and the conical recess (32a) are consistent with the central axis of the forming hole (12a); the forming hole ( 12a) The cylindrical depth of the lower part is 2 mm; the upper mold core (32) and the lower surface of the upper mold main body (31) are located on the same plane.