CN201596808U

CN201596808U - Bar cutting device on bidirectional synchronous cutting extruder

Info

Publication number: CN201596808U
Application number: CN201020109253XU
Authority: CN
Inventors: 蒋飞岳; 张卫兵; 袁永强
Original assignee: Zhuzhou Cemented Carbide Group Co Ltd
Current assignee: Zhuzhou Cemented Carbide Group Co Ltd
Priority date: 2010-02-05
Filing date: 2010-02-05
Publication date: 2010-10-06
Anticipated expiration: 2020-02-05

Abstract

The utility model discloses a bar cutting device on a bidirectional synchronous cutting extruder, which comprises a stepping motor, two synchronous transmission wheels and two sets of cutting mechanisms used for simultaneously cutting bars from a left direction and a right direction. The stepping motor drives the synchronous transmission wheels through a driving wheel and a synchronous belt, and the two synchronous transmission wheels respectively drive the two sets of cutting mechanisms. The cutting mechanisms utilize two sets of double-crank mechanisms which are symmetrically distributed left and right to respectively drive a cutting blade to cut the squeezed bars, the cutting blades are mounted on connecting rods and symmetrically distributed left and right, each cutting blade slides while shearing centers of the squeezed bars and then reduces cutting force, and cutting forces of the two cutting blades are balanced mutually without bending the squeezed bars or causing cracks and marks at two ends of each cut. Cylindrical cams of the cutting mechanisms lead the cutting blades to keep synchronous longitudinal movement basically with the squeezed bars while cutting transversely. In addition, the bar cutting device can resolve problems that the cutting blades are blocked during a cutting process, and guarantee quality of cuts.

Description

Bar shearing device on the bi-directional synchronization cutting extruder

Technical field

The utility model relates to bar shearing device on a kind of novel, high-quality extruder, can be used for cutting off automatically on the extruder bar goods.

Background technology

Bar shearing device on the extruder was to adopt air cylinder driven one that blade is carried out unidirectional cut-out along the excellent cross-sectional direction of extruding in the past, owing to have only the shear action power of a direction, it is crooked to cause being cut the extruding rod, crack and vestige at the otch two ends, and blade in working angles owing to lack the synchronous accompany movement of extruding direction along bar, there is serious putty phenomenon, causes that therefrom a mass output rate of extruded bars is about 82.7%.

The utility model content

The utility model is exactly the technical problem that exists in the bar shearing device on the above-mentioned existing extruder in order to solve, and bar shearing device on a kind of bi-directional synchronization cutting extruder is provided.

Bar shearing device on this bi-directional synchronization cutting extruder that the utility model provides, comprise stepper motor, two synchronous driving wheels, be used for cutting simultaneously two cover shut-off mechanisms of bar from left and right sides both direction, described stepper motor drives two cover shut-off mechanisms by a driving wheel and the described synchronous driving wheel of band drive synchronously respectively by these two synchronous driving wheels.

Described shut-off mechanism comprises driving crank and driven crank, connecting rod, cutting tip, rotating shaft place of described driving crank and driven crank all has cylindrical cam, another rotating shaft place is used for installing connecting rods, make driving crank drive driven crank by connecting rod, be fixed with on the connecting rod respectively with driving crank on cylindrical cam and the cam slide that matches with cylindrical cam on the driven crank, cutting tip is installed on the connecting rod, makes connecting rod can drive cutting tip and bar with moved further with carry out cut-out work.

Bar shearing device on this bi-directional synchronization cutting extruder of the present utility model, the shut-off mechanism that adopts two covers to be symmetrically arranged drives a bar that will push cutting tip respectively and cuts off, cutting tip is contained on the connecting rod, be symmetrically arranged, every cutting tip is also being produced slippage to extruding in the excellent central-line shear angle, can reduce cutting force, and the mutual balance of the cutting force of two cutting tips, can not make extruded bars crooked and crack and vestige at the otch two ends.The cylindrical cam of shut-off mechanism makes cutting tip keep substantially vertically being synchronized with the movement with extruded bars when making transversely cutting, can solve the putty phenomenon of cutting tip in the cutting-off process, guarantees kerf quality.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the A-A cutaway view Amplified image of Fig. 2.

The specific embodiment

From Fig. 1 and Fig. 3 as can be seen, bar shearing device on this bi-directional synchronization cutting extruder of the present utility model, comprise stepper motor 1, two synchronous driving wheels 2, two cover shut-off mechanisms, wherein two cover shut-off mechanisms are used for cutting bar simultaneously from left and right sides both direction, stepper motor 1 is by a driving wheel 9 and be with 10 to drive synchronous driving wheel 2 synchronously, drives two cover shut-off mechanisms respectively by these two synchronous driving wheels 2.Shut-off mechanism comprises driving crank 3 and driven crank 4, connecting rod 5, cutting tip 6, rotating shaft place of driving crank 3 and driven crank 4 all has cylindrical cam 7, another rotating shaft place is used for installing connecting rods 5, make driving crank 3 drive driven crank 4 by connecting rod 5, be fixed with on the connecting rod 5 respectively with driving crank 3 on cylindrical cam 7 and the cam slide 8 that matches with cylindrical cam 7 on the driven crank 4, insert respectively in the chute of cylindrical cam 7 at the two ends of cam slide 8, as cylindrical cam and master, when driven crank rotated together, cam slide and connecting rod will be forced to do axially reciprocating.Cutting tip 6 is installed on the connecting rod 5, makes connecting rod 5 can drive cutting tip and bar with moved further with carry out cut-out work.

During the utility model work, following two synchronous driving wheels 2 of stepper motor 1 driving will drive driving crank 3 when rotating and rotate together, driving driven crank 4 by connecting rod 5 respectively then also rotates together, thereby cylindrical cam 7 is also rotated together, make cam slide 8 at first vertically advance mobile along rotating shaft, thereby together move forward with connecting rod 5 that is attached thereto and cutting tip 6, reach and follow the purpose that the excellent work together of extruding is synchronized with the movement.Connecting rod 5 is also done the plane translation simultaneously, together does the plane translation with the cutting tip that is attached thereto, and makes cutting tip at first make cutting movement to the bar center synchronously from two ends, the left and right sides, and when two cutting tips switched to the center simultaneously, bar was cut off.After bar is cut off, cutting tip is two ends rollback to the left and right from the bar center, after two cutting tips withdrawed from the extruding rod fully, the cam slide band the connecting rod that is attached thereto and cutting tip and is together vertically retreated mobilely, returns to original position and waits for and cut off action next time.

Claims

1. a bi-directional synchronization is cut bar shearing device on the extruder, it is characterized in that this device comprise stepper motor (1), two synchronous driving wheels (2), be used for from left and right sides both direction cut simultaneously bar two the cover shut-off mechanisms, described stepper motor (1) is by a driving wheel (9) and be with (10) to drive described synchronous driving wheel (2) synchronously, drives two cover shut-off mechanisms respectively by these two synchronous driving wheels (2).

2. bar shearing device on the bi-directional synchronization cutting extruder according to claim 1, it is characterized in that described shut-off mechanism comprises driving crank (3) and driven crank (4), connecting rod (5), cutting tip (6), rotating shaft place of described driving crank (3) and driven crank (4) all has cylindrical cam (7), another rotating shaft place is used for installing connecting rods (5), make driving crank (3) drive driven crank (4) by connecting rod (5), be fixed with on the connecting rod (5) respectively with driving crank (3) on cylindrical cam and the cam slide (8) that matches with cylindrical cam on the driven crank (4), cutting tip (6) is installed on the connecting rod (5), makes connecting rod (5) can drive cutting tip and bar with moved further with carry out cut-out work.