CN114147292B

CN114147292B - Profile cutting device

Info

Publication number: CN114147292B
Application number: CN202111495424.6A
Authority: CN
Inventors: 叶元义; 叶良鹏; 叶剑锋; 臧文富
Original assignee: ANHUI ZHONGYI MACHINE TOOL MANUFACTURING CO LTD
Current assignee: ANHUI ZHONGYI MACHINE TOOL MANUFACTURING CO LTD
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2024-05-03
Anticipated expiration: 2041-12-08
Also published as: CN114147292A

Abstract

The invention relates to a section bar cutting device, which is provided with a rack for installing working parts, and also comprises a fixed die, a cutting die and a power device, wherein the fixed die and the cutting die are fixed on the rack, and at least one opening for conveying section bars is formed in the fixed die; the cutting die is closely attached to the surface of the fixed die, and a knife edge for cutting the sectional material is arranged at the opening position; the power device is provided with a movable end which can stretch and retract along the installation direction, and the cutting die is fixed on the movable end. The section bar cutting device is matched with the concave cutting edge on the cutting die through the square fixed die opening, can realize cutting processing of angle steel, round pipes and square pipes on the same cutting edge cutting structure, and has the advantages of simple structure, capability of processing various section bars and good adaptability.

Description

Profile cutting device

Technical Field

The invention relates to the field of profile machining equipment, in particular to a profile cutting device.

Background

In the processing and manufacturing of various nonstandard and standardized equipment, a large number of sectional materials with various sections are used, and the sectional materials need to be processed according to the actual equipment requirements, including the sectional materials are divided into specified lengths, various process openings, surface treatment and the like.

At present, due to different requirements, a multifunctional cutting device which has a simple structure and is used for cutting various sectional materials is not available.

Disclosure of Invention

In view of the above technical problems in the prior art, the present invention provides a profile cutting device.

The technical scheme of the invention is as follows:

a section bar cutting device provided with a frame to which a working member is mounted, further comprising:

a fixed die fixed on the frame, wherein the fixed die is provided with at least one opening for conveying the sectional material;

the cutting die is closely attached to the surface of the fixed die, and a knife edge for cutting the section bar is arranged at the opening position;

the power device is fixed on the frame and provided with a movable end which can stretch and retract along the installation direction, and the cutting die is fixed on the movable end.

Specifically, an opening is formed in the fixed die, the opening is square, and a diagonal line of the opening is parallel to the mounting direction;

And a knife edge is arranged on the knife mold at the position corresponding to the opening, and comprises a left cutting edge and a right cutting edge, wherein the left cutting edge and the right cutting edge are symmetrical relative to the installation direction S and form a concave tip beta.

Specifically, the range of beta of the concave tip is more than or equal to 90 degrees and less than or equal to 180 degrees.

Preferably, the concave tip β=90°.

According to the invention, the square fixed die opening is matched with the concave cutting edge on the cutting die, so that cutting processing of angle steel, round pipes and square pipes can be realized on the same cutting edge cutting structure, specifically, when steel is processed, two sides of angle steel are pressed on two sides of the opening far away from the cutting edge through the clamping device, when the round pipes are processed, the round pipes are clamped between the two sides of the opening through the clamping device, centering positioning and clamping are completed, and the square pipes or rectangular pipes can be processed in the same manner.

Drawings

FIG. 1 is a schematic view of the backward structure of a profile cutoff device of the present invention;

FIG. 2 is a partial elevation view of a stationary mold of the profile cutoff apparatus of the present invention;

FIG. 3 is a schematic backward view of the fixed mold and the cutting mold in the standby position;

fig. 4 is a schematic view of a backward structure of the cutting die of the present invention.

In the figure:

a frame 1; 2, fixing the mold; 3, a cutting die; 4, a hydraulic device; 5, guiding grooves;

21 a first opening; 22 openings; 23 a third opening; 24 a fourth opening;

31 a first knife edge; 32 knife edges; 33 a third knife edge; 34 a fourth knife edge;

321 left edge; 322 right edge; 331 a third edge; s, mounting direction;

341 a fourth edge; 342 a back-off section; 343 left edge; 344 right edge.

Detailed Description

The present invention will be described in detail below with reference to the drawings and the specific embodiments, and in the present specification, the dimensional proportion of the drawings does not represent the actual dimensional proportion, but only represents the relative positional relationship and connection relationship between the components, and the components with the same names or the same reference numerals represent similar or identical structures, and are limited to the schematic purposes.

Fig. 1 is a schematic view of the backward structure of the profile cutting device according to the present invention, in which a fixed mold 2 is reliably fixed in a vertical plane on a frame 1 of the profile cutting device, and the fixed mold serves as a working surface of equipment and a supporting surface during profile cutting. The movable cutting die 3 is arranged in the equipment and is tightly attached to the inner side surface of the fixed die, the cutting die is connected with the movable end 41 of the hydraulic device 4 fixed on the frame, the movable end 41 is driven by the hydraulic pressure in the hydraulic device 4 to drive the cutting die 3 to move along the installation direction S, in order to avoid the position movement of the cutting die in the moving process, the cutting die 3 is limited by the guide grooves 5 arranged on the frame 1 on two sides of the fixed die 2, the cutting die 3 is ensured to move in the guide grooves 5 when cut off, so that the cutting die 3 is limited to be always abutted to the inner side surface of the fixed die 2 in the moving process, and the movement of the cutting die 3 in the width direction is limited.

Fig. 2 is a partial front view of the fixed mold 2, in which four openings for feeding the section bar are formed, namely, a first opening 21 for cutting the plate material, an opening 22 for cutting the angle steel, a third opening 23 for cutting the round tube, and a fourth opening 24 for cutting the square steel and the rectangular steel. The first opening 21 is in a horizontal strip shape, the opening 22 and the third opening are square with a diagonal line parallel to the mounting direction S, and the fourth opening is square with one side parallel to the mounting direction S.

Fig. 3 is a schematic backward diagram of the fixed mold 2 and the cutting mold 3 at the standby position, and fig. 4 is a schematic forward diagram of the cutting mold 3. The broken line part in the figure shows the structure on the fixed mold 2. The cutting die 3 is provided with a corresponding cutting edge at a position corresponding to the opening of the fixed die 2. Specifically, a first knife edge 31 is disposed corresponding to the first opening 21, a knife edge 32 is disposed corresponding to the opening 22, a third knife edge 33 is disposed corresponding to the third opening 23, and a fourth knife edge 34 is disposed corresponding to the fourth opening 24. The first knife edge 31 is arranged above the first opening 21 along the installation direction S, and forms an angle alpha with the strip-shaped first opening 21, wherein alpha is 30 degrees or more and 45 degrees or less, when alpha is less than 30 degrees, the feeding amount of the first knife edge for cutting the plate material is more than 1.7 times of the unit length when the cutting die descends along the installation direction S, on the one hand, the uneven cut is caused by the excessively high feeding amount, on the other hand, the higher requirement is provided for the strength of the cutting die, so that the service life is reduced under the same strength, and meanwhile, the large feeding is used for replacing the short stroke, so that the higher requirement is actually provided for a power source, and the thickness of the maximum plate material which can be cut is reduced under the condition of using the same hydraulic device as power. With the increase of the angle alpha, the cutting of the plate with the same width needs a larger moving stroke of the cutter die, under the condition of 45 degrees, the down-pressure height is equal to the feeding stroke, and the condition that the feeding stroke is smaller than the down-pressure height occurs when the feeding stroke is continuously increased, so that the cutting device is limited by the volume of the device, the width of the plate which can be cut is reduced, and the cutting capability of the cutting device is limited. In the present invention, α=30° is selected. The knife edge 32 is arranged above the lower half of the opening 22 in the mounting direction S. The knife edge 32 comprises a left cutting edge 321 and a right cutting edge 322, wherein the left cutting edge 321 and the right cutting edge 322 are symmetrical relative to the installation direction S and form a sharp wedge end beta which is more than or equal to 90 degrees and less than or equal to 180 degrees. The wedge end beta is used for cutting two sides of the angle steel from the opening side of the angle steel to complete cutting action, when the beta is smaller than 90 degrees, in order to complete cutting of the angle steel, the moving stroke of the cutting die 3 is more than 1.4 times of the width of the side edge of the angle steel, and when the beta is larger than 180 degrees, the moving stroke of the cutting die 3 is lower than 0.7 times of the width of the side edge of the angle steel, but the strength is insufficient, and the service life is influenced. In this example, β=90°. The third edge 33 is a square with a hollow portion entirely including a diagonal line of the third opening 23 parallel to the mounting direction, and the third edges 331 of the third edge 33 are formed on two sides of the square with respect to the third opening in an upward direction of the mounting direction. The fourth blade 34 is divided into a fourth blade 341 and an avoiding section 342. So that the opening of the fourth opening 24 is completely located inside the hollow portion formed by the cutting edge and the avoiding section, the fourth cutting edge 341 includes a left cutting edge section 343 and a right cutting edge section 344 symmetrically arranged relative to the mounting direction S, and the left cutting edge section 343 and the right cutting edge section 344 form an inward concave tip groove γ=90°, so that an circumscribed circle surrounding the circular tube is formed with the lower edge of the fourth opening, so that the stress of four contact points is uniform during the cutting of the circular tube, and the cutting deformation is reduced. And a positioning and fixing mechanism for adjusting and limiting the position of the section bar is further arranged on the outer side face of the fixed die. The positioning and fixing mechanism adjusts the positions and the distances of the pressing device relative to the material supporting edges of the openings through the thread pairs, so that the universal clamping of the sectional materials with different sizes is realized.

In the profile cutting operation, the cutting die 3 is driven by the hydraulic device 4 to move downwards along the installation direction S, and simultaneously the upper first cutting edge 31, the upper cutting edge 32, the upper third cutting edge 33 and the upper fourth cutting edge 34 on the cutting die 3 respectively cut the profile extending into the first opening 21, the opening 22, the third opening 23 and the fourth opening 24 on the fixed die 2, so that the profile cutting operation is completed.

Specifically, the first blade 31 cooperates with the first opening 21 to cut a plurality of specifications of boards. The plates with different thicknesses are pressed on one side edge of the first opening through the adjustable positioning and fixing mechanism, so that the plates are fixed when cut off. The knife edge 32 cooperates with the opening 22 to cut angle steel with various specifications. Angle steel with different sizes is respectively attached to two sides of the opening far away from the knife edge, and the angle steel is fixed through the positioning and clamping mechanism, so that looseness is avoided. The third knife edge 33 cooperates with the third opening 23 to cut the tubular section bar, and the tubular is clamped between two sides of the third opening far away from the third knife edge by the positioning and clamping mechanism, so as to realize automatic centering positioning and clamping fixation of the tubular. The fourth knife edge is matched with the fourth opening to cut the square pipe or the rectangular pipe, and the pipe is automatically centered and limited on the lower edge of the opening through the positioning and clamping mechanism.

And under the condition that the cutting-off processing is not needed at the same time so as to improve the cutting-off efficiency, the cutting-off of the sectional materials with various sections can be realized by only matching the knife edge (32) with the opening (22), specifically, when the angle steel is cut off, the angle steel is positioned at two sides of the opening far away from the knife edge, the knife edge moves from top to bottom, when the round steel is cut, the round steel is positioned at two sides of the square steel pipe which are far away from the knife edge in a tangential way, and the two sides of the square steel pipe are abutted against each other, and the two sides of the square steel pipe which are far away from the knife edge are positioned.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and various modifications and improvements made by those skilled in the art to which the invention pertains will fall within the scope of the invention as defined by the appended claims without departing from the spirit of the invention.

Claims

1. A profile cutting device provided with a frame (1) for mounting working parts, characterized in that it further comprises:

a fixed die (2) fixed on the frame, at least one opening (22) for conveying the sectional material is formed in the fixed die, and a third opening (23) for cutting the circular tube is formed in the fixed die;

the cutting die (3) is closely attached to the surface of the fixed die (2), and a knife edge (32) for cutting the sectional material is arranged at the opening position;

A power device (4) fixed on the frame, the power device is provided with a movable end (41) which can be telescopic along the installation direction (S), and the cutting die (3) is fixed on the movable end;

An opening (22) arranged on the fixed die (2) is square, and a diagonal line of the opening (22) is parallel to the mounting direction (S); the third opening (23) is square with a diagonal line parallel to the installation direction (S);

a knife edge (32) is arranged on the knife mold (3) corresponding to the position of the opening (22), the knife edge (32) comprises a left cutting edge (321) and a right cutting edge (322), and the left cutting edge (321) and the right cutting edge (322) are symmetrical relative to the installation direction S and form an inward concave tip beta; the beta range of the concave tip is more than or equal to 90 degrees and less than or equal to 180 degrees;

the cutting die (3) is provided with a third cutting edge (33) corresponding to the third opening (23), the third cutting edge (33) is a square with a hollow part completely comprising a diagonal line of the third opening (23) parallel to the installation direction, and the two sides of the square with the third cutting edge along the upward direction of the installation direction relative to the third opening are third cutting edges (331) of the third cutting edge (33).

2. Profile cutting device according to claim 1, wherein the concave tip β = 90 °.