JPH069746Y2 - Welding wire cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a welding wire cutting device.

(Prior art and its problems) When automating arc welding using consumable electrodes such as MIG welding and CO ₂ welding, the tip of the welding wire is appropriately cut to ensure good arc startability. You need to do it.

Various welding wire cutting devices for automatically performing such work have been proposed and put into practical use, but none of them have sufficient operation certainty for soft wires such as aluminum wires. It has the drawback of not having it.

The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is to provide a welding wire cutting device capable of performing a reliable cutting operation even on a soft wire.

(Means for Solving the Problems) Therefore, in the welding wire cutting device of the present invention, the first wire pressing block is arranged on one side of the wire inserting portion provided on the body frame, and the first wire pressing block is arranged on the other side. The wire holding block is provided with a moving member that is reciprocally driven toward and away from the wire holding block. The moving member includes a second wire holding block that contacts the first wire holding block and a back surface of the first wire holding block. And a wire cutter slidably contacting the wire cutter. Further, the second wire pressing block is provided between two positions, that is, a position where the tip of the second wire pressing block projects forward from the tip of the wire cutter and a position where the tip of the second wire pressing block recedes from the tip. It is reciprocally movable and further has a biasing means for biasing the second wire pressing block forward.

(Operation) In the above-described welding wire cutting device, the distal end portion of the welding wire is inserted into the wire insertion portion, and the moving member is driven to move it forward. Then, first, since the tip portion of the second wire pressing block projects further forward than the tip portion of the wire cutter, the welding wire is held in a pressed state between the first wire pressing block and the second wire pressing block. Will be. Then, when the moving member is further advanced from this state, only the wire cutter is advanced this time, and the welding wire is cut between the tip portion of the wire cutter and the back surface of the first wire holding block.

(Example) Next, a specific example of the welding wire cutting device of the present invention will be described in detail with reference to the drawings.

First, in FIG. 2 and FIG. 3, reference numeral 1 denotes a main body frame, and a cutout portion that opens to the side is formed as a wire insertion portion 2 in one of the main body frame 1. The first wire pressing block 3 is fixed to the side of. A moving member 4 is reciprocally arranged on the other side of the wire insertion portion 2. This moving member 4
Is attached to the main body frame 1 and is reciprocally driven in a direction of coming into contact with and separating from the first wire pressing block 3 by a driving unit 5 having an air cylinder or the like built therein. As shown in FIG. 3 and FIG. 3, the cutter mounting block 6, the wire cutter 7, and the second
The wire holding block 8 is provided. The cutter mounting block 6 is for fixing the wire cutter 7 in a replaceable manner, and is reciprocally driven by the drive unit 5. The second wire pressing block 8 can reciprocate with respect to the wire cutter 7, that is, the position where the tip of the second wire pressing block 8 projects further forward than the tip of the wire cutter 7 (see FIG. 4). The wire cutter 7 can be reciprocated between a position retracted from the tip of the wire cutter 7 (see FIG. 1). In this case, the second wire pressing block 8 is biased in the forward projecting direction by a biasing means (not shown) such as a spring or an air cylinder. Note that, as shown in FIG. 1, the second wire pressing block 8 has substantially the same thickness as the first wire pressing block 3 and is arranged at positions opposite to each other, and the wire cutter 7 has an upper surface thereof which is the first wire pressing block 3. It shall be arranged so as to be in sliding contact with the lower surface of the.

Next, the operating state of the welding wire cutting device will be described.

First, as shown in FIG. 4, the distal end portion of the welding wire W is inserted into the wire insertion portion 2 and the driving member 5 advances the moving member 4, that is, the cutter mounting block 6. Then, since the tip portion of the second wire pressing block 8 projects toward the tip side of the wire cutter 7 by the biasing means, as shown in FIG. 5, the second wire pressing block 8 is the first wire pressing block first. The welding wire W is pressed against and fixed between both the blocks 3 and 8 by abutting on the pressing block 3, and from this state, the cutter mounting block 6 is further pushed.
When the second wire pressing block 8 is moved forward, the second wire pressing block 8 is held in the above state, only the wire cutter 7 moves forward, and the welding wire W is moved by the tip part of the wire cutter 7 and the lower surface side corner part of the first wire pressing block 3. It will be cut (Fig. 1).

As described above, in the above embodiment, the welding wire W is cut while being pressed and fixed between the first and second wire pressing blocks 3 and 8, so that it is a soft wire such as an aluminum wire. Also, it is possible to cut easily and surely. The upper surface of the wire cutter 7 is the first
Since the structure is in sliding contact with the lower surface of the wire pressing block 3, it is possible to prevent the welding wire W from being sandwiched between the both 7 and 3, thereby causing a malfunction of the apparatus.

(Effect of the Invention) In the welding wire cutting device of the present invention, since the welding wire is pressed and held between the pair of wire pressing blocks by the wire cutter, the welding wire is soft like aluminum wire. Even if it is a material, there is an effect that a reliable cutting operation can be performed.

[Brief description of drawings]

FIG. 1 is an explanatory view of the essential parts of an embodiment of the welding wire cutting device of the present invention, FIG. 2 is a plan view of the overall structure, FIG. 3 is its front view, and FIGS. It is explanatory drawing of a state. DESCRIPTION OF SYMBOLS 1 ... Main body frame, 2 ... Wire insertion part, 3 ... 1st wire pressing block, 4 ... Moving member, 7 ... Wire cutter, 8 ...
Second wire pressing block.

Claims (1)

[Scope of utility model registration request] 1. A first wire pressing block is arranged on one side of a wire insertion portion provided on a main body frame, and is reciprocatingly driven on the other side in a direction of approaching and separating from the first wire pressing block. The moving member includes a second wire pressing block that contacts the first wire pressing block, and a wire cutter that slidably contacts the back surface of the first wire pressing block, and the second wire pressing block is further provided. The block is capable of reciprocating between two positions, that is, a position in which the tip portion of the block projects forward from the tip portion of the wire cutter and a position in which the tip portion is retracted from the tip portion, and the second wire pressing block is moved forward. A welding wire cutting device, characterized in that it is provided with an urging means for urging the welding wire.