ES2227098T3 - PUNCH. - Google Patents

Abstract

Punch has base ring (12) with two part configuration (12a,12b). One (12a) along cylindrical part allows adjustment of reservoir bell and fixing of it. Other (12b) has number of graded shoulders (12c) of different diameters which allow fixing of reservoir bell as function of exterior diameters. Cutting tool (14) has teeth (14a) which cut into wall as force is applied by reservoir bell on other side of wall. The punch has a screwed (11) bolt (11a), a base ring (12) which freely moves along the bolt axis, a reservoir bell (13) designed to fix and temporarily lock onto the base ring, and a cutting tool (14) screwed at the end of the bolt. The interior of the reservoir bell is used to hold circular disks cut from the wall. The bell has two successive zones (13a,13b). One (13a) a cylindrical part complementary to the ring (12). The other (13b) has a cylindrical cone shape with its smaller diameter facing the cutting tool. These two parts define a reservoir zone for the wall cutouts (15). The opening (13c) at the bell end allows the introduction of the cutting tool as its edge (13d) is pressed against the wall surface (P).

Description

Punch.

The object of the invention is a punch perfected that allows to cut several parts that are removed from a wall or support.

Punches are known as defined in the FR 2461536 and represented in Figure 1. They include an axis threaded (1) with head (1a) in which a free ring (2) with inner opening (2a) and shaft passage opening (2b) in front of which, a shape tool (3) is mounted on the end of said axis. This shape tool is threaded (3a) in its center and has a cylindrical opening (3b) of section such that gears and focuses on the ring (2) mentioned when it closes. This shape tool carries notches (3c) on protrusion that form cutting edges and are joined together by protruding edges curvilinear (3d) that can also have a cutting effect. The wall (P) in which the opening should be made is located between the ring and the shape tool after mounting the punch. Previously, a hole has been made in said wall to allow the passage of the main axis.

The tightening of the shaft head (1a) causes the Approach of the shape tool (3), and penetration progressive of the latter in the component wall material. The joining edges, which can be sharp, perform the shearing of the part of the removed material that emerges from its support to fit in the bottom of the receiver ring.

Performed this operation, the operator must then unscrew the tool so that, with Often, the part taken from the wall is trapped in the bottom of the ring (2), and another tool is needed to remove it of your accommodation whereby, such an operation results impractical and low productivity. Remove the cut part is not always easy because there is a blockage at the bottom of the ring.

On the other hand, the punch is known described in patent FR 2,587,245. This one is arranged so next.

Includes interchangeable cutting elements (5) quick fixation placed and centered by a mounting of "bayonet" on a base (6) containing the end of the clamping sleeve (7), said base (6) being arranged with various tiers (6b) of decreasing diameter and being conditioned the peripheral outer face (6a) of each of said stands and profiled with two progressive ramps (6c) that form grooves diametrically opposed, said guide means slots serving and retention of the projections (8a) formed in each element shear (8) and that perform a radial tightening and positioning in recoil over your seat; in the thickness of the stands, in the deepest place in the grooves, recesses have been made (6d) to allow the introduction of the projections (8a) of the cutting element in the grooves.

A punch of this type has as its only function contain various concentric cutting rings and that adjust according to its diameter. This punch works essentially blow by blow. It is necessary to remove and disassemble ring-shaped cutting means to remove the cut part before performing another operation.

The desired object, according to the invention, is therefore both design a new punch tool that can allow successively cut several wall parts to be removed on a support flat, without having to disassemble the punch, which was necessary Perform with the prior art.

This goal is achieved with a punch of in accordance with claim 1.

According to a first feature, the punch includes a threaded shaft of great length with a head, a ring which forms a freely mounted or sliding base on the shaft, a tank hood that can be fixed and unlocked temporarily on said base and a cutting die located in the end of the shaft and that can move along it to screw it in and the tank bell carries an area of storage of several clipped washers on the wall, allowing the shaft to contain and skewer said washers.

These and other characteristics will be deduced from the continuation of the description

To establish the object of the invention, it represents in a non-limiting way in the figure of the planes, in the that:

Figure 1 is a view of a punch according to prior art

Figure 2 is a view of another punch according to the prior art.

Figure 3 is a view of another punch according to the invention with a storage device mounted on the punch.

Figure 4 is a longitudinal sectional view. with the tank full of washers cut according to the invention.

Figure 5 is a view before mounting the different components of the punch with the tank according to the invention.

Figure 6 is an exploded view with the representation of a clipped washer.

To make the object of the invention, is now described in a non-limiting manner represented in The figure of the planes.

The punch according to the invention is represented in figures 3 to 6 and carries as a whole the reference (10).

This punch is characterized in that it allows cut several wall parts in the form of washers or otherwise and keep them momentarily in the tool and can perform thus several cutting operations without having to disassemble the tool every time.

The punch according to the invention, to perform the aforementioned function includes a threaded shaft (11) of great length with a head (11a), a ring that forms a base (12) mounted freely or sliding on the shaft (11), a bell tank (13) that can be temporarily set and unlocked on said base and a cutting die (14) located at the end of the shaft (11) and that can move along it when screwing East.

Particularly, the base forming ring (12) It is made with a two-part configuration (12a) (12b), a of them (12a), has a cylindrical part that allows adjusting the deposit bell and fixing the latter, and the other (12b) is arranged in various steps with flange (12c) in diameter different and that allow to fix the tank bell (13) depending on of its outer diameter.

The tank bell (13) also has two zones successive (13a) (13b), one of them (13a) with a cylindrical part complementary to the opening (12a) of the ring and the other (13b) oriented in front of the cutting die (14) creating the deposit area of clipped wall washers (15).

Advantageously, part (13b) has a shape cylindrical trunk oriented from the largest to the smallest diameter towards the end of said bell. An opening (13c) at the tip of the end of it, allows the passage and introduction more or less deep cutting die (14). Said opening (13c) thus creates the edge of the end of the reservoir ring (13b) that rests on the inner face of the wall (P). The cutting die (14) carries notches (14a) of the type described in French patent 2461536 which allows the sectioning of the wall against the force of back support exerted by the deposit bell located on the other side of the wall (P).

Thus, according to the invention, the washers cuts fall into the inner volume of the deposit bell. How It is represented in the drawings, several washers can be stored thus allowing several successive cutting operations.

The deposit bell can be removed by releasing it of the support ring. As a non-limiting example, the union assembly It is bayonet type, as described in the French patent 2587245.

Depending on the diameter of the washers a cut, the deposit bell can be set within a range appropriate to allow fixing according to one of the stands (12c) while the opening (13c) is chosen depending on the section of The washer to cut.

Other means of attachment between the tank hood and support ring, which allow a union of quick assembly

The length (L) of the deposit bell thus creates the useful storage part of the washers, for n washers. Said washers are perfectly maintained on the shaft (11) and are they support each other successively. The first washer is rests against the face (12d) in front of the flanged ring (12). The zone (13e) of union of the parts (13a) (13b) of the bell deposit is advantageously placed in front of the face (12d) of in front of the ring (12).

The punch of the invention is therefore of Simple design, easy to assemble and disassemble, allowing the storage of several cut washers. This punch Multifunctions is very practical and, on the other hand, washers cut after disassembly and detachment of the hood it is done without any special additional tools, since they are only mounted on the shaft after cutting when you have to slide them or turn the punch out so they turn gravity.

The advantages are deduced from the description.

Claims (5)

1. Corkscrew characterized in that it includes a threaded shaft (11) of great length with a head (11a), a ring that forms a base (12) freely mounted or sliding on the shaft (11), a deposit bell (13 ) that can be temporarily fixed and unlocked on said base and a cutting die (14) located at the end of the shaft (11) and that can move along the shaft (11) when screwing it, and because the deposit bell creates internally a storage area of several washers cut into the wall (P), allowing the shaft (11) to contain and skewer said washers, and because the bell has two successive zones (13a-13b), one of them (13a) with a part cylindrical complementary to the ring (12) and the other (13b) so cylindrical trunk oriented from the largest to the smallest diameter towards the end of the bell in front of the cutting die (14), and creating the washer deposit area of cut wall (15), and because an opening (13c) at the end of this allows the passage and the more or less deep introduction of the cutting die (14), said opening (13c) creating the edge of the end of the reservoir ring (13d) that rests on the inner face of the wall (P). 2. Punch-shaped according to claim 1, characterized in that the ring forming a base (12) is made with a two-part configuration (12a) (12b), one of which (12a) has a cylindrical part that allows the adjustment of the tank bell and the fixing of the latter, and the other (12b) is arranged with several steps with flange (12c) of different diameter and that allow the fixing of the tank bell (13) depending on the outer diameter of the latter. 3. Punch according to any of claims 1 and 2 characterized in that the cutting die (14) has notches (14a) that allow the sectioning of the wall against the counter-support force exerted by the deposit bell located on the other side of the wall (P). 4. Punch according to any one of claims 1 to 3, characterized in that the connection means between the hood and the support ring are of the type that allows a quick assembly. 5. Punch according to any one of claims 1 to 4, characterized in that the washers are held on the shaft (11) and are supported successively against each other, the first washer resting against the face (12d) of the front part of the ring (12 ).