JP2002515358A - Self-adjusting tongue-and-groove support of cutting machines, especially for splicing frame edges - Google Patents

Abstract

The tongue-and-groove support (1) has a tongue-and-groove stop (13) in the form of an angled block mounted on a rod (12) displaceable on the support. A return spring (14) is inserted between the end of the rod and the base of the support. The rod is locked in height by a clamping collar (15) and the wings of the collar can be clamped by a locking lever when the stop is positioned against the rim. Applicable for splicing around frame edges.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

The present invention relates to the field of framing and is directed to a complete machine for splicing mouldings using a self-adjusting tongue-and-groove support.

[0002]

[Prior art]

It is known that such machines are provided with a tongue-and-groove support that slides along two guides at an angle of 45 ° with respect to the plane of the rim.
These supports, which slide under the tongue and groove, serve to support the periphery during the cutting operation. This is to prevent the peripheral edge from being inclined or not being cut well. However, for this purpose, the horizontal heel of the tongue support must be mounted below the tongue reentry angle and hit against the tongue as completely as possible without lifting the rim. Conventionally, the knurled knob engaged with the movable mechanism formed by the tongue-and-groove support can raise and lower the heel of the support to place the support in the correct position with respect to the peripheral edge Was. This operation is not always easy for the user, and if the peripheral edge is not properly held on the working table, it is lifted on the table. This mechanism is thus insensitive and the user is forced to try and error before the tongue support is locked at the correct height.

[0003]

[Problems to be solved by the invention]

Applicants propose to overcome these disadvantages by providing a self-adjusting tongue-and-groove support that is easy to handle. With this self-adjusting tongue-and-groove support, the support is always correctly positioned with respect to the tongue and the tongue does not slip.

[0004]

Thus, the invention relates to a tongue-and-groove support for a machine, especially for splicing a frame periphery, the angle being mounted on a displaceable rod on said support. A tongue-and-groove support having a tongue-and-groove stop in the form of a block and having means for locking the height of the rod on the support.

According to the invention, a rod is slidably mounted on a tongue-and-groove support and engages a return spring (14) located between the end of the rod and the base of the support. Yes,
The height of the rod on the support is locked by a locking mechanism.

More specifically, the locking mechanism is constituted by a clamping collar that slides on a rod, and the two wings of the collar are perforated with orifices through which the pin of the locking lever can be passed.

[0007] The operation of the tongue-and-groove support and the advantages gained thereby will become apparent from the following description of the preferred embodiments, read in conjunction with the accompanying drawings.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 shows a working table 6 known per se, which supports a set of pivot stops 2 which serves to support the rim 3 to be spliced. For this purpose, a cutting tool (not shown) is arranged along two horizontal guides 4 at an angle of 45 ° to the stop 2. Each of these guides 4 is provided with a groove 5, which is generally designated by the reference numeral 1 and serves to allow the tongue-and-groove support shown in detail in FIG.

The tongue-and-groove support 1 is attached to a slide 10 arranged in the groove 5. A support is fixed to the slide with screws 11. The support 1 extends vertically on the slide and has a tongue-and-groove stop 1 in the form of an angle block.
It serves to accommodate the sliding rod 12 integral with 3. The return spring 14 is connected to the rod 12
Of the support 1 and the base of the support 1. A clamp collar 15 is attached to the upper part of the support, and is fixed with screws 19. As can be seen in FIG. 3, the two wings (15a, 15b) of the collar are perforated with orifices 16 through which the pin of the lock lever 17 can be passed. This is Figure 1
It is understood by. The end of the collar is provided with an opening 18 for engaging the rod 12. As long as the two wings (15a, 15b) of the collar are not clamped by the lever, the rod is free to move through the opening.

In the position shown in FIGS. 1 and 4, the periphery 3 abuts the stop 2 and the tongue-and-groove support 1 is spaced from the stop.

The first task to be performed by the user is to release the wings of the clamping collar 15 by releasing the locking lever 17 and thus release the sliding rod 12.

Next, the rod 12 can be pushed down as shown in FIG. 5 against the pressing force of the return spring 14. In this way, the lower tongue and groove stop 13 reaches its lower position and displaces the tongue and groove support 1 by actuating it horizontally in the direction of the arrow. This is done in order to slide the stop 13 below the periphery 3. During this movement, the rim is manually held against the stop 2. The pressure acting on the rod 12 is then removed and the rod is pressed upwards by the spring 14 until the stop 13 is pressed against the upper part of the tongue. At this time, the periphery is
It remains manually held in place. The user need only lock the rod 12 in this position using the lock lever 17 as shown in FIG. The tongue and groove support 1 is, of course, operated in the same way.

[0013] Thus, an automatic means is provided for setting the tongue-and-groove support at the correct height with respect to the frame periphery without requiring the user to make special adjustments requiring labor.

[Brief description of the drawings]

FIG. 1 is a perspective view of a splicer provided with a tongue and groove support according to the present invention.

FIG. 2 is an enlarged sectional view of a tongue and groove support.

FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. 2;

FIG. 4 is an elevational view of the machine during a continuous sequence of operations;

FIG. 5 is an elevation view of the machine during a continuous sequence of operations;

FIG. 6 is an elevational view of the machine during a continuous sequence of operations;

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Claims (2)

[Claims] A self-adjusting tongue-and-groove support for a machine, especially for splicing a frame periphery, said tongue-and-groove stop in the form of an angle block mounted on a displaceable rod on said support And having means for locking the height of the rod on the support, wherein the rod (12) is slidable on the tongue support (1). , And is engaged with a return spring (14) located between its end and the base of the support, the rod being held on the support by a locking mechanism (15, 17). The tongue and groove support, the height of which is locked. 2. The locking mechanism according to claim 1, wherein said locking mechanism slides on said rod (12).
The tongue-and-groove according to claim 1, characterized in that the two wings (15a, 15b) of the collar are perforated with orifices (16) through which a locking lever (17) can be passed. Support.