JPH08112698A - Connecting rod of machine press - Google Patents

Abstract

PURPOSE: To form the connecting part of a connecting rod and a slide in a machine press to the mechanism having small size and little number of the parts. CONSTITUTION: This press has the constitution for receiving the working load and a strip load by arranging a cylindrical hole at the slide side 3 and connecting the connecting part of the cylindrical hole of a sliding member fixed to the slide hole and the slide 3 of the connecting rod 2 at the cylindrical hole of the sliding member fixed to the hole of the slide.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY Used in mechanical presses having slides driven by connecting rods.

[0002]

2. Description of the Related Art As a connecting portion between a connecting rod and a slide, there are a ball type shown in FIG. 1 (a), a wrist pin type shown in FIG. 1 (b), and a sheet metal type shown in FIG. 1 (c).

[0003]

A work load and a strip load in the opposite direction to the work load act on the connecting portion between the connecting rod and the slide of the mechanical press, and the magnitude of the load is 100 work loads. Thus, the strip load has a value of 15 to 20.

In FIG. 1, in this conventional connecting portion, the ball type is a female hemispherical ball seat 12, the sheet metal type is a semicylindrical sheet metal 22, and the ball type has a hole in the center. Female hemispherical ball retainer 13, sheet metal type is cylindrical pin 2
The strip load is received at 3. In the wrist pin type, both the work load and the strip load are received by the cylindrical wrist pin 17.

All of these conventional techniques have a large number of parts, are large in size, are costly, and are not lightweight, compact, or space-saving configurations. In particular, in a mechanical press having a plurality of slides, the conventional technique has a problem that the distance between the adjacent slides cannot be reduced due to the restriction of the size of the connecting portion between the connecting rod and the slide.

[0006]

A connecting rod of a connecting rod and a slide of a mechanical press has a cylindrical shape on the small end side and a part of the cylindrical shape is a connecting member for connecting to the large end side, and a slide. Or it is called a slide including the plunger included in the slide and the slide side member of the die height adjusting part of the slide, but the cylindrical hole of this slide in which a part of the large end side of the connecting rod is released and the slide of the slide. It is fixed in a cylindrical hole, has a release part in the same direction as the slide release part, and connects the connecting rod with the slide by a small end of the connecting rod and a sliding member whose inner diameter is rotatable. By configuring it, the number of parts is small, the distance between adjacent slides is small, and both work load and strip load can be received. To.

[0007]

The slide has a cylindrical hole, a part of which is released, and a sliding member is fixed in the hole. The cylindrical hole of the sliding member and a part of the connecting rod are the large end of the connecting rod. By configuring the connection part as a cylindrical rod that is a connection member with the section side, a connection part of the slide and the connecting rod that can receive both the work load acting on the mechanical press and the strip load is configured. are doing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In one embodiment of the present invention shown in FIGS. 2, 3 and 4, a main gear 6 of a mechanical press is fixedly mounted on a crankshaft 1, and a flywheel, a clutch, a drive shaft, a pinion and the like are driven by a motor. Driven through. Crankshaft 1
A plurality of eccentric parts 1 that are rotatably fitted to the frame 5
a. The large end of the connecting rod 2 is rotatably fitted in the eccentric portion 1a. The small end of the connecting rod 2 is connected to the slide 3 and the slide 3
Is guided by a frame 5 so as to be vertically movable.

The large end of the connecting rod 2 is rotatably fitted to the eccentric portion 1a of the crankshaft 1 of the mechanical press,
The small end portion 2a of the connecting rod is in the shape of a cylindrical rod, a part of which is a connecting member with the large end portion.

In the cylindrical hole 3a of the slide 3, one of which is opened, the sliding member 4 is fixedly installed so that one of the sliding member 4 is released like the cylindrical hole 3a of the slide. The small end 2a of the connecting rod is rotatably fitted in the cylindrical hole 4a of the rubbing member 4. The slide 3 is referred to as the slide 3 including the plunger and the slide side member of the die height adjusting unit of the slide.

The work load acting on the mechanical press is received by the semi-cylindrical portion of the cylindrical hole 4a and the small end portion 2a below the center of the drawing, and the strip load is received by the cylindrical hole 4a and the small end portion 2a.
It is received by the cylindrical portion above the center of a in the figure.

[0012]

EFFECTS OF THE INVENTION Since both the slide side and the connecting rod, the cylindrical portions which receive the work load and the strip load are formed as an integral member, respectively, compared with the conventional method in which separate members are used, It is made small.

In the present invention shown in FIG. 2, the connecting portion between the slide and the connecting rod is formed only by the width of the connecting rod in the left-right direction, and is provided for the purpose of receiving the strip load in the prior art. The feature is that members on both sides of the connecting rod in the left-right direction are eliminated. Therefore, when the present invention is used in a mechanical press having a plurality of slides, the distance between adjacent slides can be reduced.

[Brief description of drawings]

1 is a prior art slide-connecting rod connection.

FIG. 2 is a sectional view of an embodiment showing the whole of the present invention.

FIG. 3 is a front sectional view of an embodiment showing a main part of the present invention.

FIG. 4 is a side sectional view of an embodiment showing the main part of the present invention.

[Explanation of symbols]

1 is a crankshaft, 1a is an eccentric part of the crankshaft, 2 is a connecting rod, 2a is a small end of the connecting rod,
3 is a slide, 3a is a cylindrical hole provided in the slide, 4
Is a sliding member, 4a is a cylindrical hole of the sliding member, 5 is a frame, and 6 is a main gear.

Claims (1)

[Claims] 1. A mechanical press having a slide driven by a connecting rod, wherein the small end has a cylindrical shape, and a part of the cylindrical shape is a connecting member for connecting to the large end, and an upper part. To the slide or the slide side member included in the slide having a cylindrical hole, the cylindrical hole of the slide is fixed, and a part of the hole is released in the same direction as the release part of the slide. A connecting rod of a mechanical press, characterized in that a connecting portion of the connecting rod and the slide is constituted by a sliding member having an opening portion and a small end portion of the connecting rod whose inner diameter is rotatable.