JPS5832827Y2 - Separation and extraction equipment in homer - Google Patents

Description

[Detailed description of the device] This device performs processing as a secondary process other than forging in the final process of forging in a continuous multi-stage former, and at the same time separates the punching waste generated at that time from the forging material. It can be taken out separately.

The details will be described below with reference to the embodiment shown in the drawings. A piercing tool 3 is provided in the die 4 to protrude freely from the circumferential side of the cylindrical heading material 10 from a perpendicular direction and drill a small hole 2, and the die 4 is provided with a piercing tool 3 that projects from the circumferential side of the cylindrical heading material 10 in a perpendicular direction to drill a small hole 2. A core mandrel 5, which serves as a core stand during drilling, is fixed concentrically in the part, while
A stripper cylindrical body 1 that extrudes the forged material 1 immediately after being punched through the die hole 6 is slidably fitted to the outer periphery of the mandrel, and punched stubs 2a accompanying the punching of small holes are pressed into the hollow hole 5a of the mandrel 5. An extrusion pin 8 that operates and extrudes the material 1 after extrusion is slidably fitted therein, and a drive lever 9 that is operated by a power device such as a cam or cylinder is linked to this extrusion pin 8.

The forging material 1 is formed into a cylindrical cap shape having an end face 1a through several forging steps, and is supplied to the hole shown in FIG. 1 provided at the final stage of the forging process.

The die 4 is supported by a fixed pedestal 11 at its rear end together with a core mandrel 5 while being held by a die block 10.

The stripper cylinder γ is fitted into an annular space formed between the inner peripheral surface of the die hole 6 and the outer peripheral surface of the mandrel 5,
The rear end is supported in contact with the connecting rod 13 connected to the knockout pin 12, and the forging material 1 is pushed out by sliding forward due to the extrusion.

One lead hole 14 is provided on the outer peripheral surface of the tip of the mandrel 5 at a position corresponding to the piercing tool 3, so that drilling of the material 1 with the piercing tool is possible.
a into the hollow hole 5 of the mandrel 5 through this lead hole 14.
I'm trying to push it out.

If the lead hole 14 is tapered, it is possible to prevent the punching waste 2a from fitting into the lead hole 14 again.

The push-out pin 8 is slidably inserted into the hollow part of the mandrel 5 like a plunger, and is engaged with a recess 8a formed in a part of the tip locking part 9a of the drive lever 9. It causes a hook in the direction.

The drive lever 9 is swingably supported at its midpoint by a pivot pin 16 on a bracket 15 protruding from the die block 10.
The upper end is connected to a power device (not shown) such as a cam or cylinder via a connecting rod 17.

The heading material 1 formed in the heading process is supplied to the device of the present invention and is press-fitted into the die hole 6 with a punch 18.

A spring 19 acts on the punch 18 and presses the material into the proper position through spring pressure and maintains that state.Then, the piercing tool 3 projects upward from below and touches the outer peripheral surface of the body of the heading material 1. Small hole 2 is made.

The punched waste 2a is pushed into the tip of the hollow part of the mandrel 5.

When the piercing tool 3 is lowered and retracted into the die 4, the knockout pin 12 moves forward as the punch 18 retreats, pushing the stripper cylinder 7 forward through the connecting rod 13.

Therefore, the forging material 1 supported at the tip of the stripper cylinder 7 is pushed by the stripper cylinder 7 and extruded out from the tip opening of the die hole 6.

After extruding the product, when the drive lever 9 is operated and the extrusion pin 8 is slid forward, the punched waste 2a remaining in the hollow interior of the mandrel 5 is extruded from the tip opening, so that it is extruded first. It will be separated from the heading material and taken out separately.

As described above, the present invention extrudes the forging material using the stripper cylinder fitted around the outer periphery of the core mandrel, and then slides the plunger-shaped extrusion pin forward into the hollow part of the mandrel by operating the drive lever. With this structure, the forged product and the punched waste produced by perforation are separated and taken out separately, and mixing of the two can be avoided, making subsequent processing and handling convenient, and the structure is simple and operation is reliable. , there is little fear of failure and can be implemented at low cost.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional side view showing one embodiment of the device of the present invention;
The figure is a sectional view taken along line A--A in FIG. 1, and FIG. 3 is a sectional view of the die tip opening. 1... Heading material, 2... Small hole, 3... Piercing tool, 4... Die, 5... Core mant sill, 6...
-Dice hole, 7... Stripper cylinder, 8... Push-out pin 9... Drive lever 2a... Punching waste.

Claims (1)

[Scope of utility model registration request] A piercing tool that protrudes from the circumferential side of the cylindrical heading material from a right angle direction and drills a small hole is provided in the die, and a core mandrel that serves as a core stand during drilling is concentrically integrated in the center of the die hole. While it is fixedly installed, a stripper cylinder that extrudes the forged material immediately after punching through the die hole is slidably fitted on the outer periphery of the mandrel, and the punching scum from the small hole punching is inserted into the hollow hole of the mandrel. A separating and extracting device for a homer, characterized in that an extrusion pin is slidably inserted into the extrusion pin to operate and extrude the material after extrusion, and a drive lever operated by a power device such as a cam or a cylinder is connected to the extrusion pin.