CN203140509U - Bending device for metal section bar - Google Patents

Abstract

The utility model discloses a bending device for metal profiles, which comprises a worktable, on which a central shaft, a central wheel rotatably assembled on the central shaft, and a pressing wheel spaced apart from the central wheel are arranged, and the axis of the pressing wheel is Parallel to the axis of the center wheel, the gap between the pressure wheel and the center wheel is used to clamp the metal profile to be processed, and the center shaft is provided with a driving device for driving the center shaft to rotate and a pendulum mechanism for bending the metal profile. The pendulum folding mechanism is a door-shaped bracket. The column of the door-shaped bracket is fixedly connected to the central axis. The beam of the door-shaped bracket is located on the side of the line connecting the center wheel and the center of the pressure wheel. The other side of the line connecting the center wheel and the center of the pressure wheel is provided with a stop wheel for pressing the non-bending end of the metal profile to be processed, and the axis of the stop wheel is parallel to the axis of the center wheel. The part of the metal profile to be bent will not be subjected to the extrusion force, thereby avoiding extrusion deformation.

Description

Bending device for metal profiles

technical field

The utility model relates to a bending device for metal profiles, which belongs to the technical field of metal processing.

Background technique

Metal profiles often need to be bent. A bending machine in the prior art mainly includes a workbench. A clamping device for clamping the non-bending end of the metal profile to be processed is provided on one side of the workbench. The other side of the machine is provided with a bending mechanism for bending one end of the metal profile to be processed. The bending mechanism includes a center wheel arranged on the working platform and an extrusion wheel rotating around the axis of the center wheel. The center wheel and The axes of the extrusion wheels are arranged in parallel. When bending metal profiles, place the end of the metal profile to be bent in the gap between the extrusion wheel and the center wheel, and make the clamping device clamp the non-bending end of the metal profile, and then control the operation of the bending machine Make the extrusion wheel rotate around the axis of the center wheel, and the metal profile is bent under the extrusion of the extrusion wheel to form the arc required by the product. However, during the bending process of the metal profile, since the non-bending end is clamped and fixed, the extrusion force on the bending part of the metal profile is likely to cause the metal profile to be rounded when the extrusion wheel rotates during the bending process. The inner surface of the arc is sunken, and the friction force on the metal profile will cause the metal profile to slip at the clamping device, resulting in stretching and deformation of the metal profile. It is difficult to ensure the center distance between two adjacent arcs and affect the processing accuracy.

Contents of the invention

The purpose of the utility model is to provide a bending device for metal profiles to solve the problem that the bending machine in the prior art causes the deformation of the metal profiles during the bending process, such as indentation of the arc surface.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the bending device of metal profiles includes a workbench, and the workbench is provided with a central shaft, a central wheel that is rotatably assembled on the central shaft, and a center wheel that is spaced apart from the central wheel. Pressing wheel, the axis of the pressing wheel is parallel to the axis of the central wheel, the gap between the pressing wheel and the central wheel is used to clamp the metal profile to be processed, the central shaft is provided with a driving device for driving the central shaft to rotate and for folding The pendulum folding mechanism of bent metal profiles, the pendulum folding mechanism is a door-shaped bracket, the column of the door-shaped bracket is fixedly connected to the central axis, and the beam of the door-shaped bracket is located on the side of the line connecting the center wheel and the center of the pressure wheel. There is a space for the bending end of the metal profile to be processed to pass through, and the other side of the line connecting the center wheel and the center of the pressure wheel is provided with a retaining wheel for pressing the non-bending end of the metal profile to be processed. The axis of the retaining wheel is parallel to the axis of the center wheel.

The connecting line between the center of the pressure roller, the center of the center wheel and the center of the retaining wheel forms a right triangle, and the hypotenuse of the right triangle is formed by the line connecting the center of the center wheel and the center of the retaining wheel.

A clamping device for fixing the metal profile to be processed on the crossbeam is provided on the crossbeam of the door-shaped support.

When the utility model is in use, the metal profile to be processed is placed in the gap between the center wheel and the pressure wheel, so that the metal profile is clamped by the center wheel and the pressure wheel, and at the same time, the end of the metal profile to be bent is passed through the gate shape. On the beam of the bracket, the non-bending end of the metal profile is pressed by the retaining wheel. When bending the profile, the control drive device drives the central shaft to rotate, and the central shaft drives the door-shaped bracket to rotate, thereby bending the metal profile, and the retaining wheel can prevent the non-bending end of the metal profile from tilting. When the utility model bends the metal profile, the non-bending end of the metal profile is pressed together by the retaining wheel and the pressure wheel, and the part of the metal profile to be bent is deformed by the rotation of the door-shaped bracket. Extrusion force is applied to the part of the profile to be bent, which avoids the extrusion deformation of the metal profile, ensures that the inner surface of the arc does not appear concave, and improves the processing accuracy of the metal profile.

Further, the clamping device provided on the beam of the door-shaped bracket can fix the metal profile, and the non-bending end of the metal profile can slide freely, preventing the clamped and fixed part of the metal profile from slipping during bending, thereby ensuring The center distance between two adjacent circular arcs of metal profiles.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Detailed ways

As shown in Figure 1, an embodiment of the bending device for metal profiles of the present invention includes a workbench (not shown in the figure), on which a central shaft 4 and a central wheel 1 that is rotatably assembled on the central shaft 4 are provided. And the pressure roller 3 arranged at intervals from the center wheel 1, the gap between the pressure roller 3 and the center wheel 1 is used to clamp the metal profile 7 to be processed, and the central shaft is provided with a driving device for driving the central shaft to rotate (not shown in the figure ) and a pendulum mechanism for bending metal profiles, the pendulum mechanism is a door-shaped bracket 5, the column of the door-shaped bracket is fixedly connected to the central axis 4, and the beam of the door-shaped bracket is located at the connection between the center wheel and the center of the pressure wheel On one side of the line, the beam is provided with a space for the bent end of the metal profile to be processed to pass through, and the beam is also provided with a clamping device 6 for fixing the metal profile to be processed on the beam of the door-shaped support. The other side of the connection line between the center wheel and the center of the pinch wheel is provided with a retaining wheel 2 for pressing the non-bending end of the metal profile to be processed, and the axes of the retaining wheel and the pinch wheel are all parallel to the axis of the center wheel. In this embodiment, the connecting line between the center of the pinch wheel, the center of the center wheel and the center of the retaining wheel forms a right triangle, and the hypotenuse of the right triangle is formed by the line connecting the center of the center wheel and the center of the retaining wheel.

When using this embodiment, the metal profile to be processed is placed in the gap between the center wheel and the pressure wheel, so that the metal profile is clamped by the center wheel and the pressure wheel, and at the same time, the end of the metal profile to be bent is passed through the door-shaped On the beam of the bracket, the non-bending end of the metal profile is pressed by the retaining wheel. When bending the profile, the control drive device drives the central shaft to rotate, and the central shaft drives the door-shaped bracket to rotate, thereby bending the metal profile. The retaining wheel can prevent The non-bent end of the metal profile is raised. In this embodiment, when bending the metal profile, the non-bending end of the metal profile is pressed together by the retaining wheel and the pressure wheel, the part of the metal profile to be bent is driven by the rotation of the door-shaped bracket to deform, and the part of the metal profile to be bent It will not be affected by extrusion force, so extrusion deformation is not easy to occur, and the clamping device can fix the metal profile on the beam to prevent the bending part of the metal profile from slipping.

In other embodiments of the present invention, when the metal profile passes through the space on the door-shaped support crossbeam itself, the metal profile can be clamped, and no additional clamping device is needed at this time.

In other embodiments of the present invention, the triangle formed by the line between the center of the pressure wheel, the center of the center wheel and the center of the retaining wheel may also be an acute triangle or an obtuse triangle.

Claims (3)

1. the apparatus for bending of shape, comprise workbench, it is characterized in that: described workbench is provided with central shaft, the pinch roller that rotation is assemblied in the centre wheel on the central shaft and arranges at interval with centre wheel, the axis of pinch roller is parallel with the axis of centre wheel, gap between pinch roller and the centre wheel is used for clamping shape to be processed, described central shaft is provided with the drive unit that drives the central shaft rotation and is used for the pendulum folding mechanism of bending shape, this pendulum folding mechanism is portal trestle, the column of portal trestle is fixedly connected on the central shaft, the crossbeam of portal trestle is positioned at a side of the line in centre wheel and the pinch roller center of circle, crossbeam is provided with the space of passing for shape bending end to be processed, the opposite side of the line in described centre wheel and the pinch roller center of circle is provided be used to the gear wheel that compresses the non-bending end of shape to be processed, and the axis of gear wheel is parallel with the axis of centre wheel.

2. the apparatus for bending of described shape according to claim 1, it is characterized in that: the line form right angle triangle between the center of circle of the center of circle of described pinch roller, the center of circle of centre wheel and gear wheel, the hypotenuse of this right angled triangle is made of the line in the center of circle of the center of circle of centre wheel and gear wheel.

3. the apparatus for bending of described shape according to claim 1 and 2 is characterized in that: the crossbeam of described portal trestle is provided with and makes shape to be processed be fixed on clamping device on the crossbeam.