JPH0321915Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a push-cutting type that has a lower blade fixed along one side of the table surface and an upper blade that moves up and down while contacting the side surface of the lower blade. Regarding manual cutters.

Conventional technology This type of push-cut manual cutter, which has been commonly used in factories, offices, etc., has an upper blade that moves up and down along the lower blade, and a lower blade that moves the workpiece onto the table surface. A bar-shaped pressing member is attached to hold it down.

Problems to be Solved by the Invention The above-mentioned conventional presser member is configured such that a plate-like member whose lower surface is made of an elastic material is vertically pressed against the table surface. Therefore, when the cut length of the workpiece is long and thick, the closer the cutter is to the end of the workpiece, the horizontal shift will occur, causing the lower blade to move toward the outer surface of the workpiece. It may be difficult to cut exactly as you intended. Therefore, it has been desired to improve the presser mechanism so that it is easy to use, generates pressing force evenly, and prevents the object to be cut from shifting in the horizontal direction.

Means to Solve the Problem Therefore, the present invention has been devised to install an eccentric machine above the table surface of the cutter so that the maximum rotation radius of the circumferential surface is larger than the height from the surface of the object to be cut on the table surface to the axis. A rod-shaped presser member having a press-contact surface with an arch-shaped cross section is supported horizontally and rotatably in parallel with the lower blade for cutting provided on one side of the table surface, and between the presser member and the table surface. There is provided a push-cut type manual cutter characterized in that a stopper is provided on the base surface to stop the front end of the object to be cut inserted into the cutter in a predetermined position.

Function The present invention configured as described above inserts the object to be cut between the holding member and the table surface, brings its front end into contact with the stopper, and then rotates the holding member from above the table surface in the insertion direction. , the pressing surface, which has an arched cross-section and has a maximum rotation radius larger than the height from the surface of the workpiece on the table to the axis, presses the workpiece on the table parallel to the table in a posture that pushes the workpiece from behind. Therefore, a deterrent force acts from two directions: horizontally toward the stopper and perpendicularly to the table surface. This eliminates the drawbacks of the conventional presser mechanism that occur during cutting and allows for highly accurate cutting. It can be done stably.

Embodiments Examples of the present invention will be described below with reference to the drawings. In the figure, A is a base of a cutter that has a rectangular table surface a on its upper surface and a lower blade B for cutting is fixed along one side of the base, and C is a base that moves up and down while contacting the side surface of the lower blade B. This is a conventionally known upper blade that performs cutting in cooperation with the lower blade B. 1 is the height h from the surface of the workpiece M placed on the table surface a to the axis where the maximum radius r of the circumferential surface is
It is a rod-shaped presser member that has a pressure contact surface 2 with an arched cross section that is eccentric so as to be larger than the base plate A, and is parallel to the base surface a. By rotatably supporting it on a bearing (not shown), it is horizontally suspended above the base surface a with its axis parallel to the lower blade B. Reference numeral 4 indicates a stopper that fits into a pair of guide grooves 5 formed on the base surface a at right angles to the lower blade B, and is fixed at a predetermined position parallel to the lower blade B; M represents a stopper between the presser member 1 and the base surface a; This is a plate-shaped object to be cut that is inserted and its front end is stopped by a stopper 4.

This cutter has a holding member 1 as shown in FIG.
The object to be cut M is inserted with the pressure contact surface 2 kept away from the table surface a, and the front end of the object M is stopped by the stopper 4, while the presser member 1 is rotated clockwise in the drawing along the insertion direction of the object to be cut M from above. , is held between the pressure contact surface 2 and the table surface a as shown in FIG. At this time,
An object to be cut M is placed on the eccentric pressure contact surface 2 of the presser member 1.
Vertical deterrent force that presses down from above, and table surface a
A horizontal restraining force is acting to push the workpiece M toward the stopper 4 along the horizontal direction. Then, the upper blade C is lowered while maintaining this inhibited state to perform cutting.

The maximum rotation radius r of the pressure contact surface 2 of the presser bar 1 is:
The length may be sufficient as long as the holding member 1 can sufficiently hold the object M by pressing it horizontally and vertically in two directions during rotational operation. Further, the pressing member 1 may be rotated by a handle or a lever (both not shown) fixed to the shaft 3, or by a rotation transmission mechanism such as a gear or a belt. It is also possible to configure them so that they are mechanically linked to the vertical movement of the upper blade C. In addition, the pressure contact surface 2 is made of metal,
It is made of wood or an elastic material such as rubber or plastic. In addition, the press member 1 is formed to form the pressure contact surface 2.
Instead of being formed over the entire part, it may be formed intermittently in parts, as long as it is sufficient to substantially press and hold the object to be cut.

The stopper 4 has a guide groove 5 having a C-shaped cross section.
By inserting a bolt into the through hole from above and screwing it into the nut member that fits into the nut member, it is possible to fix it in a predetermined position and move it, but it is not stable against the inserted object M. The sliding structure and fixing means are arbitrary as long as they come into contact with each other. Moreover, the guide groove 5 can also be provided on the side surface of the base A, and it is optional to make it higher or lower than the base surface a.

Effects of the Invention According to the present invention configured as described above and used as described above, the object to be cut inserted onto the table surface is stopped from above along the lower blade while the front end of the object is stopped by the stopper. The eccentric pressure contact surface of the rotating presser member is clamped between the base surface and the base surface by the restraining force from two directions, vertical and horizontal, so that cutting can be performed without causing any deviation in the insertion direction and the opposite direction. This has the practical effect of allowing accurate and stable cutting at a set position.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing an embodiment of the invention;
FIG. 2 is a partially cutaway elevational view with the presser member in the open position, and FIG. 3 is a partially cutaway elevational view with the presser member in the restrained state. A...base, a...base, B...lower blade, C...
Upper blade, M... object to be cut, 1... holding member, 2...
Pressure contact surface, 3...Shaft, 4...Stopper, 5...Guide groove, r...Maximum rotation radius of pressure contact surface, h...Height from the surface of the workpiece on the base to the axis of the presser member .

Claims (1)

[Scope of utility model registration request] A rod-shaped holding member having an arched cross-section pressure contact surface that is eccentric so that the maximum rotation radius of the circumferential surface is larger than the height from the surface of the object to be cut on the table to the axis, above the table of the cutter. is rotatably supported horizontally in parallel with the lower blade for cutting provided on one side of the table surface, and the front end of the object to be cut inserted between the holding member and the table surface is held in a predetermined position. A push-cut type manual cutter, characterized in that a stopper is provided on the base surface.