CN101337244B

CN101337244B - Push structure of forming device lower knife

Info

Publication number: CN101337244B
Application number: CN2008101071935A
Authority: CN
Inventors: 蒋明生
Original assignee: Individual
Current assignee: Suzhou Jintong Machinery Manufacture Co Ltd
Priority date: 2008-08-14
Filing date: 2008-08-14
Publication date: 2011-07-20
Anticipated expiration: 2028-08-14
Also published as: CN101337244A

Abstract

The invention discloses a push structure for a lower tool of a cold-bending forming machine. Guide inclined surfaces are arranged on the top of a mobile box body and at the bottom of a lower tool base plate in the push structure; a plurality of rolling elements used for reducing the friction are rotationally arranged on the guide inclined surface of the mobile box body; the rolling elements are in contact with the guide inclined surface of the lower tool base plate, so as to roll; a passage is arranged at the bottom of the lower tool base plate, and at least some of the rolling elements pass through the passage; when the mobile box body drives the lower tool base plate to move upwards, the rolling elements are propped against the top wall of the passage; the top wall of the passage forms the guide inclined surface of the lower tool base plate; under the action of the guide inclined surfaces, the mobile box body pushes the lower tool base plate to lead the lower tool to shear upwards; when the lower tool base plate is returned, the rolling elements are propped against the bottom wall of the passage, so that the mobile box body drives the lower tool base plate to move downwards and return; because of the buffer of the mobile box body, the lower tool base plate can lead the lower tool to return smoothly, and the impact on a machine tool is very small; therefore, the forming machine has the advantages of high stability and reliability.

Description

The promotion structure of cutter under the cold-bending forming machine

Technical field

The present invention relates to the promotion structure of cutter under a kind of sheet metal cold-bending forming machine.

Background technology

Under the cold-bending forming machine in the promotion structure of cutter, mobile box moves back and forth in horizontal plane, driving down, tool rest plate in the vertical direction moves back and forth, on the following tool rest plate cutter is installed down, the top of mobile box, the bottom of following tool rest plate all has guiding surface, be provided with a plurality of rolling members that are used to reduce friction on the guiding surface of mobile box rotationally, rolling member contacts with the guiding surface of following tool rest plate, roll, effect by guiding surface, the active force of mobile box horizontal direction is changed into down the active force of tool rest plate vertical direction, and between two guiding surfaces is rolling friction, frictional resistance is very little, on the cold-bending forming machine, the reciprocating motion of mobile box in horizontal plane is by hydraulic oil cylinder driving, be provided with return spring between following tool rest plate and the lathe, following tool rest strip down cutter and is made progress when shearing the back return, mobile box elder generation return, mobile box and following tool rest plate break away from, and following tool rest plate has hysteresis effect during return under the gravity effect of self, though return spring is arranged, but following tool rest plate is still very big to the impact of lathe, cause very big bang, produce huge noise, make-up machine stability and reliability are not high.

Summary of the invention

The object of the present invention is to provide the promotion structure of cutter under a kind of cold-bending forming machine, following tool rest strip down cutter return reposefully in this structure.

In order to reach above purpose, the technical solution used in the present invention is: the promotion structure of cutter under a kind of cold-bending forming machine, be included in the mobile box that work moves back and forth in the horizontal plane, in the vertical direction moves back and forth and is subjected to the following tool rest plate of described mobile box actuation movement, the top of described mobile box, the described bottom of tool rest plate down all has guiding surface, on the tool rest plate cutter is installed down under described, be provided with a plurality of rolling members that are used to reduce friction on the guiding surface of described mobile box rotationally, contact to the guiding surface of small part rolling member with described down tool rest plate, roll, the described bottom of tool rest plate down has passage, when the motion of the described tool rest plate down of described mobile box driving, pass described passage to the small part rolling member, when the tool rest plate moves upward under described mobile box driving is described, roof to small part rolling member and described passage is inconsistent, and the roof of described passage forms the described guiding surface of tool rest plate down; When the tool rest plate moves downward under described mobile box driving is described, inconsistent to the diapire of small part rolling member and described passage.

Because the present invention has adopted above technical scheme, its advantage is: the top of mobile box, the bottom of following tool rest plate all has guiding surface, be provided with a plurality of rolling members that are used to reduce friction on the guiding surface of mobile box rotationally, contact to the guiding surface of small part rolling member with following tool rest plate, roll, passage is arranged at the bottom at following tool rest plate, pass passage to the small part rolling member, when the tool rest plate moves upward under mobile box drives, roof to small part rolling member and passage is inconsistent, the roof of passage forms down the guiding surface of tool rest plate, and by the effect of guiding surface, the tool rest strip down upwards shearing of cutter under mobile box promoted; When the tool rest plate shrinks back return instantly, diapire to small part rolling member and passage is inconsistent, the tool rest plate moved downward return under then mobile box drove, because the buffering of mobile box is arranged, following tool rest strip down cutter return reposefully, impact to lathe is very little, causes make-up machine stability and reliability all higher.

Description of drawings

Accompanying drawing 1 is a front view of the present invention;

Accompanying drawing 2 is a side view of the present invention;

Wherein: 1, following cutter oil cylinder; 2, big casing; 3, mobile box; 4, rolling member; 5, following tool rest plate; 12, spring; 13, upper slitter fixed head; 14, upper slitter oil cylinder; 15, upper slitter pressing plate; 17, upper slitter; 18, following cutter; 20, return plate; 22, upper base plate; 24, passage.

The specific embodiment

Further set forth concrete structure of the present invention and operation principle below in conjunction with accompanying drawing.

Shown in attached Fig. 1 and 2, the promotion structure of cutter under a kind of cold-bending forming machine, be used to control down upwards shearing and downward return of cutter, be included in the mobile box 3 that work moves back and forth in the horizontal plane, in the vertical direction moves back and forth and is subjected to the following tool rest plate 5 of described mobile box 3 actuation movement, the top of described mobile box 3, the described bottom of tool rest plate 5 down all has guiding surface, on the tool rest plate 5 cutter 18 is installed down under described, be provided with a plurality of rolling members that are used to reduce friction 4 on the guiding surface of described mobile box 3 rotationally, contact to the guiding surface of small part rolling member 4 with described down tool rest plate 5, roll, spur mobile box 3 side-to-side movements in the big casing 2 by the push rod that is installed in the following cutter oil cylinder 1 on the big casing 2.Guiding surface under rolling member 4 on mobile box 3 promotes below the tool rest plate 5, under ramp effect, make the power of left and right directions change into the power of above-below direction, in the present embodiment, rolling member 4 is selected bearing for use, friction when interacting to reduce by two guiding surfaces, return plate 20 is equipped with in the bottom of following tool rest plate 5, form passage 24 between return plate 20 and the bottom, when the described tool rest plate down 5 of described mobile box 3 drivings moves, pass described passage 24 to small part rolling member 4, when tool rest plate 5 moves upward under described mobile box 3 drivings are described, inconsistent with the roof of described passage 24 to small part rolling member 4, the roof of described passage 24 forms the described guiding surface of tool rest plate 5 down; When tool rest plate 5 moves downward under described mobile box 3 drivings are described, inconsistent with the diapire of described passage 24 to small part rolling member 4.

By the effect of guiding surface, tool rest plate 5 had been with cutter 18 upwards to shear under mobile box 3 promoted; When tool rest plate 5 shrinks back return instantly, inconsistent to small part rolling member 4 with the diapire of passage 24, tool rest plate 5 moved downward return under then mobile box 3 drove, because the buffering of mobile box 3 is arranged, following tool rest plate 5 is being with cutter 18 return reposefully, impact to lathe is very little, causes make-up machine stability and reliability all higher.

In the present embodiment, has passage 24 on the following tool rest plate 5, mobile box 3 is provided with rolling member 4, if on mobile box 3, offer passage 24, following tool rest plate 5 is provided with rolling member 4, can finish down the steady return of tool rest plate 5 equally, and this structure belongs to the equivalent technologies feature of present embodiment and replaces, it is just thinkable very naturally that those skilled in the art need not creative work, so do not give unnecessary details.

On the make-up machine, upper slitter 17 is installed in the upper slitter fixed head 13 by upper slitter pressing plate 15.The upper slitter oil cylinder 14 drive upper slitters 17 that are installed on the upper base plate 22 pump, and cutter 18 pumped and continuously cuts the folding operation to finish under following cutter oil cylinder 1 drove.Upper slitter 17 is finished downwards and is cut the folding action, when making progress return, by 14 pullings of upper slitter oil cylinder, simultaneously with traditional spring 12 auxiliary returns; Following cutter 18 is upwards finished and cut the folding action, and return is all only controlled by following cutter oil cylinder 1 downwards, owing to can carry out good control to oil cylinder by Programmable Logic Controller, makes that the motion of cutter 18 can be steady down, and is reliable.Even gravity factor is arranged, if the pushrod movement of cutter oil cylinder 1 under the good control, and the buffering of mobile box 3, just can obtain peace and quiet, stable return.

Last 17, cutter 18 is installed upper slitter fixed head 13 respectively, down on the tool rest plate 5, can be dismantled down.When tool wear, just can remove reconditioning.As long as change the traverse of oil cylinder, just can compensate the wear extent of cutter simultaneously.

Claims

1. the promotion structure of cutter under the cold-bending forming machine, be included in the mobile box (3) that work moves back and forth in the horizontal plane, in the vertical direction moves back and forth and is subjected to the following tool rest plate (5) of described mobile box (3) actuation movement, the top of described mobile box (3), the described bottom of tool rest plate (5) down all has guiding surface, on the tool rest plate (5) cutter (18) is installed down under described, be provided with a plurality of rolling members that are used to reduce friction (4) on the guiding surface of described mobile box (3) rotationally, contact to the guiding surface of small part rolling member (4) with described down tool rest plate (5), roll, it is characterized in that: the described bottom of tool rest plate (5) down has passage (24), return plate (20) is equipped with in the described bottom of tool rest plate (5) down, form described passage (24) between the bottom of described return plate (20) and described tool rest plate (5) down, when the motion of the described tool rest plate (5) down of described mobile box (3) driving, pass described passage (24) to small part rolling member (4), when described mobile box (3) drives described tool rest plate (5) down when moving upward, inconsistent with the roof of described passage (24) to small part rolling member (4), the roof of described passage (24) forms the described guiding surface of tool rest plate (5) down; When described mobile box (3) drives described tool rest plate (5) down when moving downward, inconsistent with the diapire of described passage (24) to small part rolling member (4).