RU92624U1 - EDGE SCISSORS FOR CUTTING SHEETS FOR RENT - Google Patents

Abstract

Trimming shears for cutting sheet metal containing a bed, nodes of longitudinal and transverse cutting, including lower fixed knives mounted in a common knife block mounted on the bed in longitudinal and transverse directions, upper movable knives mounted respectively on the upper knife beam and on the rotary holder , characterized in that the common knife block is mounted on the bed with an additional element for fixing it relative to the bed in the direction of the transverse knife in the form of a dowel, installed one In the grooves made in the bed and in the common knife block, the part of the key is made wedge-shaped to interact with the groove of the knife block, which corresponds to the shape of the wedge part of the key, the groove on the bed is closed, and the key is rigidly fixed to it parallel to the cutting edge of the transverse knife .

Description

The utility model relates to the processing of metals by pressure, in particular to equipment for cutting, and can be used on cutting sites of rolling mills.

A device is known for fastening scissor knives for cutting sheet material (Aut. St. SU 1587786, V23D 35/00, 1988), where the knife block is attached by hydraulic spring clamps.

A disadvantage of the known fastening is the unreliable fixation of the knife block, due to failure of the clamp springs, which experience cyclic loading, with each cut.

Known edge scissors containing a support frame, a bed, nodes of longitudinal and transverse cutting, including lower fixed knives installed in a common knife block mounted on the bed, upper movable knives installed in their knife blocks, respectively, on the upper knife beam and on the rotary holder (Patent RU No. 79819 from 08.20.20008, prototype).

A disadvantage of the known scissors is the unreliable fixation of the common, for stationary knives, knife block in the bed in the direction of the transverse knife, for example, due to failure of the clamp springs that experience cyclic loading, the load at each cut of the trim with the upper inclined transverse knife.

The objective of the proposed scissors is to provide a simple and reliable additional fixation of the common, for fixed knives, knife block in the bed in the direction of the transverse knife in order to increase the reliability of the scissors.

The problem is solved in that in known edge trimming shears containing a bed, nodes of longitudinal and transverse cutting, including lower fixed knives installed in a common knife block mounted on the bed, upper movable knives mounted, respectively, on the upper knife beam and on the rotary holder, the common knife block is fixed on the bed with hydraulic spring clamps with an additional element of its fixation relative to the bed in the direction of the transverse knife, in the form of a key installed simultaneously in the grooves, made e in the bed and in the common knife block, while the upper part of the key is made wedge-shaped to interact with the groove of the knife unit that corresponds to the shape of the wedge part of the key, and on the bed the groove is closed, the key is fixed rigidly and parallel to the cutting edge of the transverse knife.

This design of the proposed edge trimming scissors will provide a simple and reliable additional fixation of the common, knife block on the bed in the direction of the transverse knife and increase the durability of the springs in the longitudinal clamps.

The proposed trimmers are presented in the drawings.

Figure 1 shows the main view of the scissors

figure 2 - place a of figure 1,

figure 3 is a section bB of figure 2,

figure 4 is a section bb In figure 3,

figure 5 is a section GG of figure 4

Scissors consist of a support frame 1, a bed 2, nodes of longitudinal and transverse cutting, including lower fixed knives respectively, a longitudinal knife 3 and a transverse knife 4 mounted in a common knife block 5 mounted on the frame 2, the upper movable knives 6, 7 installed in their knife blocks, respectively, a longitudinal knife 6 on the upper knife beam 8 and a transverse knife 7 on the rotary holder 9. The common knife block 5 is mounted on the frame 2 with a transverse hydraulic spring clamp 10 through the wedge 11 and longitudinal hydraulic spring clamps 12 with an additional the first element of its fixation relative to the frame 2 made in the form of a key 13 installed simultaneously in the grooves made in the frame 2 and in the groove made in the general block 5, while the upper part of the key is made wedge, for interaction with the groove of the knife block 5 which corresponds to the shape of the wedge part the keys 13, and the groove of the bed 2 is closed, on which the key 13 is rigidly fixed parallel to the cutting edge of the transverse knife 4.

Trimming scissors work as follows.

The sheet to be cut is centered on the roller table and fed into the cutting zone. Before cutting the sheet, the required horizontal lateral clearance is established between the upper and lower longitudinal knives 3, 6 and the transverse knives 4, 7. The common knife block 5 is clamped in the frame 2 in the direction of the transverse knife 4 with the longitudinal hydraulic spring clamps 12 and the wedge part of the key 13, and in the direction the longitudinal knife 3 with a transverse hydraulic spring clamp 10. Moreover, the direction of the wedge of the key 12 is such that when you try to squeeze the knife block 5 from the bed 2, the resistance to this movement will only increase.

Providing edge trimming scissors with a common fixed-blade knife block, which has an additional element for fixing it relative to the shear bed in the direction of the transverse knife, improves their reliability and, therefore, reduces their downtime, which is especially important when scissors are installed in the process stream.

Claims (1)

Trimming shears for cutting sheet metal, containing a bed, nodes of longitudinal and transverse cutting, including lower fixed knives mounted in a common knife block mounted on the bed in longitudinal and transverse directions, upper movable knives mounted respectively on the upper knife beam and on the rotary holder , characterized in that the common knife block is mounted on the bed with an additional element for fixing it relative to the bed in the direction of the transverse knife in the form of a dowel, installed one In the grooves made in the bed and in the common knife block, the part of the key is made wedge-shaped to interact with the groove of the knife block, which corresponds to the shape of the wedge part of the key, the groove on the bed is closed, and the key is rigidly fixed to it parallel to the cutting edge of the transverse knife .