JPS6037219Y2 - spacer - Google Patents

Description

[Detailed Description of the Invention] The purpose of the present invention is to reduce the weight and improve the strength of a spacer interposed between each cutting blade in an apparatus for shearing a steel plate into strips.

A steel plate slitter has ring-shaped cutting blades attached to two parallel shafts in an interlocking manner and spaced apart from each other by a required distance.

In order to determine the interval between the cutting blades, a ring-shaped spacer is placed on the outer periphery of the shaft, but in the past, this spacer was made of metal and was therefore heavy and difficult to attach and detach.

Therefore, synthetic resin spacers have been proposed to reduce weight.

This synthetic resin spacer has a metal rod inserted in a direction parallel to its axis in order to improve its strength.

However, since a fairly large force acts on the spacer in its axial direction, there is a risk that the metal rod may move and fall off from the spacer body.

This proposal solves the above problems.

To explain this with reference to the embodiments shown in the drawings, 1 is a pipe-shaped spacer body made of synthetic resin, which is made of epoxy resin, Fehr resin, polyester resin, or any of these synthetic resins, which have little deformation and high strength. Fiber-reinforced plastics are suitable, and thermoplastic resins such as polyamide resins can also be used, and there is no need to particularly limit the synthetic resins used.

Reference numeral 2 denotes metal pins that penetrate the spacer body 1 in its axial direction and are fixed to the spacer body 1 at intervals in the circumferential direction. It is made of a metal with high strength, such as alloy steel, and has a thread formed along the entire length of its outer circumference.

That is, the pin 2 passes through the spacer body 1 in the axial direction and is screwed into the screw hole 3.
The spacer body 1 is fixed to the spacer body 1 with a hardened adhesive that is interposed between the spacer 2 and the pin 2.

Both ends of the pin 2 are flush with the spacer body 1 as shown in FIG. 2, or the ends of the pin 2 are flush with the spacer body 1 as shown in FIG.
Make it stick out a little.

This spacer is interposed between ring-shaped cutting blades 5, 5 arranged around the shaft 4, as shown in FIG.

Two shafts 4 are arranged in parallel, and the cutting edges of cutting blades 5, 5 attached to them are engaged with each other,
This engagement of the cutting blades 5, 5.5. Shear the steel plate.

The cutting edge 5 and the spacer are both strongly clamped in their axial direction and are rendered immovable.

When tightened in this manner, the metal pin 2 embedded therein prevents the size of the spacer body 1 from changing, thereby maintaining the correct interval between the cutting blades 5.5.

Therefore, if the pin 2 is not firmly fixed to the spacer body 1, there is a risk that the pin 2 will separate from the spacer body 1 and fall off during repeated tightening.

As mentioned above, the spacer of the present invention has its main body 1 made of synthetic resin, so it is lightweight and easy to handle.

Furthermore, a metal pin 2 is passed through the spacer body 1 in the axial direction, which receives force during use, so that the force is also received by the pin 2, thereby maintaining the dimensional accuracy of the spacer body 1 in the axial direction. Is possible.

The pin 2 is screwed into the screw hole 3 of the spacer body 1 via a screw formed on the entire length of its outer circumference, and an adhesive is interposed between the pin 2 and the screw hole 3 to form the spacer body 1. is fixed to.

In other words, since the spacer body 1 and the pin 2 are integrated by the screws formed on them and the adhesive, it is almost impossible for the pin 2 to move linearly in its axial direction. Since the force acting on the pin 2 is only in the direction parallel to the axis thereof, there is no fear that the pin 2 will fall off from the spacer body 1 due to repeated use, and it can withstand use for a long period of time.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; Fig. 1 is a front view, Figs. 2 and 3 are enlarged cross-sectional views of main parts of different examples, and Fig. 4 is a front view.
The figure is a sectional view of an example of use. 1. Nispasa main body, 2: pin, 3: screw hole.

Claims (3)

[Scope of utility model registration request] (1) Metal pins are fixed through the pipe-shaped synthetic resin spacer body in the axial direction and at intervals in the circumferential direction, and the pins are screws formed on the entire outer circumference of the spacer body. is screwed into a screw hole formed in the spacer body, and is fixed to the spacer body with an adhesive interposed between the two. (2) The spacer according to claim 1, in which both ends of the pin are flush with both sides of the spacer body. (3) The spacer according to claim 1, in which both ends of the pin slightly protrude from both sides of the spacer body.