A straightening machine having a split frame

Abstract

The present application discloses a straightening machine with split frame, comprising an upper roller box and a lower roller box, further comprising a pressing assembly and rigid upper and lower frames, the pressing assembly drives the upper frame to swing and lift respectively to correspondingly adjust the inclination and the downward pressure of the working roller of the upper roller box, the rigid upper and lower frames can ensure that they are integral rigid bodies in the horizontal and vertical directions to effectively improve the horizontal rigidity, the upper frame has a horizontal part and a vertical part, the upper roller box and the horizontal part are connected through a first locking unit to form rigid support to reduce the horizontal deflection deformation of the working roller of the upper roller box, a spherical hinge is arranged between the vertical part and the lower frame and is slidably sleeved on the lower frame, the lower roller box and the lower frame are connected through a second locking unit to form rigid support to reduce the horizontal deflection deformation of the working roller of the lower roller box, thereby ensuring the flatness of the straightened plate.

Description

Technical Field

[0001] This invention relates to the field of strip finishing technology, and in particular to a straightening machine with a split frame. Background Technology

[0002] The straightening machine is a core piece of equipment used for finishing sheet and strip materials. The straightening machine consists of main components such as frame, roller box, bending roller device, and pressing device.

[0003] The existing straightening machine frame is a single cast steel piece or a single prestressed frame, and it is a gantry frame composed of two independent gantry structural components. Although this structure can resist longitudinal deformation during the straightening process, it cannot effectively reduce the lateral deflection deformation of the roller box. Therefore, a rigid upper crossbeam is configured to reduce the lateral deformation of the roller box. This makes the structure of the straightening machine more complex, and the rigidity of the upper crossbeam is limited by the size of the gantry frame (such as not exceeding the upper limit of the height of the gantry frame), so its rigidity cannot reach the optimal value. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a straightening machine with a split frame, wherein the upper frame and the lower frame are integral in both the horizontal and vertical directions. This effectively improves the horizontal rigidity of the upper and lower frames, thereby reducing the horizontal deflection deformation of the work rollers and ensuring the straightness of the straightened sheet.

[0005] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0006] A straightening machine with a split frame includes a cooperating upper roller box and a lower roller box, a pressing assembly, and an upper frame and a lower frame arranged vertically. Both the upper frame and the lower frame are rigid structural components. The upper frame has a connected transverse section and a longitudinal section. The upper roller box and the transverse section are connected and fixed by a first locking unit to reduce the transverse deflection of the working roller of the upper roller box. A ball joint is provided between the longitudinal section and the lower frame, and the ball joint is slidably fitted onto the lower frame. The lower roller box and the lower frame are connected and fixed by a second locking unit to reduce the transverse deflection of the working roller of the lower roller box. The pressing assembly drives the upper frame to swing along the strip conveying direction to adjust the inclination of the working roller of the upper roller box in the strip conveying direction. The pressing assembly drives the upper frame to rise and fall to adjust the downward pressure of the working roller of the upper roller box in the vertical direction.

[0007] Furthermore, the lower frame has a base, support shafts fixed on both sides of the base, and limiting slides fixed on the outside of the support shafts; the second locking unit is fixed on the lower frame, and the lower roller box abuts against the base through the second locking unit; the ball joint is slidably sleeved on the support shaft, and the upper frame has arc-shaped guide plates on both sides, with the two arc-shaped guide plates abutting against the limiting slides to restrict the swing of the upper roller box.

[0008] Furthermore, a spring balancing assembly is provided between the upper frame and the lower frame.

[0009] Furthermore, a bending roller unit is mounted on the upper frame. The bending roller unit drives the upper roller system connected to the upper roller box to drive the working rollers of the upper roller system in the upper roller box to rise and fall.

[0010] Furthermore, the bending roller unit includes a driver, a lead screw and nut pair, a slider, an upper inclined wedge, and a lower inclined wedge. The rotation shaft of the driver is connected to the lead screw and nut pair, and the lead screw of the lead screw and nut pair is fixedly connected to the slider. One side of the slider is slidably mounted on the upper frame, and the other side is connected to the upper inclined wedge. The upper inclined wedge and the lower inclined wedge form a sliding connection. The lower inclined wedge is connected to the upper roller system of the upper roller box.

[0011] Furthermore, the driver is a drive motor.

[0012] Furthermore, the first locking unit is a first locking cylinder.

[0013] Furthermore, the second locking unit is a second locking cylinder.

[0014] The technical solution provided by this invention has the following beneficial effects:

[0015] By using rigid structural components for both the upper and lower frames, the upper and lower frames are ensured to be integral rigid bodies in both the transverse and longitudinal directions, effectively improving their transverse stiffness. Furthermore, the rigid support of the upper roller box by the transverse portion of the upper frame and the rigid support of the lower roller box by the lower frame reduce the transverse deflection of the working rollers in the upper and lower roller boxes, thereby ensuring the straightness of the sheet metal after straightening. Attached Figure Description

[0016] Figure 1 The image shown is a first-view cross-sectional view of the straightening machine with a split frame in the embodiment.

[0017] Figure 2 The image shown is a second-view cross-sectional view of the straightening machine with a split frame in the embodiment.

[0018] Figure 3 The image shown is a partial view of the upper frame equipped with the bending roller unit, the first locking unit and the upper roller box in the embodiment. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] Reference Figures 1 to 3 As shown, this embodiment provides a straightening machine with a split frame (hereinafter referred to as the straightening machine). The straightening machine includes a cooperating upper roller box 1 and a lower roller box 2, as well as a pressing assembly 10 and an upper frame 3 and a lower frame 4 arranged vertically. The upper frame 3 and the lower frame 4 are both rigid structural components. The upper frame 3 has a transverse part 31 and a longitudinal part 32 connected to each other. The upper roller box 1 and the transverse part 31 are connected and fixed by a first locking unit 6 to reduce the transverse deflection deformation of the working roller of the upper roller box 1. A ball joint 8 is provided between the longitudinal section 32 and the lower frame 4, and the ball joint 8 is slidably sleeved on the lower frame 4. The lower roller box 2 and the lower frame 4 are connected and fixed by the second locking unit 7 to reduce the lateral deflection deformation of the working roller of the lower roller box 2. The pressing component 10 drives the upper frame 3 to swing along the strip conveying direction to adjust the inclination of the working roller of the upper roller box 1 in the strip conveying direction. The pressing component 10 drives the upper frame 3 to rise and fall to adjust the downward pressure of the working roller of the upper roller box 1 in the vertical direction.

[0022] In this embodiment, the first locking unit 6 is a first locking cylinder, the second locking unit 7 is a second locking cylinder, and the pressing assembly 10 consists of four symmetrically arranged motor drive assemblies.

[0023] The upper frame 3 is hinged to the lower frame 4 via the ball joint 8 to form a hinge point. When the pressing component 10 drives the upper frame 3 to move, the upper frame 3 can swing back and forth around the hinge point to adjust the inclination of the upper frame 3, thereby adjusting the inclination of the working roller of the upper roller box 1.

[0024] By controlling the extension and retraction amplitude of the extension and retraction ends of the four motor drive components, the swing angle and height of the upper frame 3 are adjusted, thereby adjusting the inclination of the working roll of the upper roller box 1 in the strip conveying direction and the downward pressure of the working roll of the upper roller box 1 in the vertical direction.

[0025] A bending roller unit 5 is mounted on the upper frame 3. The bending roller unit 5 includes a driver 51 (such as a drive motor), a lead screw and nut pair 52, a slider 53, an upper inclined wedge 54 and a lower inclined wedge 55. The rotating shaft of the driver 51 is connected to the lead screw and nut pair 52 to drive the lead screw of the lead screw and nut pair 52 to rotate.

[0026] The lead screw of the lead screw and nut assembly 52 is fixedly connected to the slider 53. One side of the slider 53 is slidably mounted on the upper frame 3, and the other side is connected to the upper wedge 54 so that the slider 53 can move synchronously with the lead screw of the lead screw and nut assembly 52.

[0027] The upper inclined wedge 54 and the lower inclined wedge 55 form a sliding connection. The lower inclined wedge 55 is connected to the upper roller system of the upper roller box 1. The upper inclined wedge 54 is driven by the slider 53 to force the upper inclined wedge 54 to slide obliquely on the lower inclined wedge 55, thereby realizing the raising and lowering of the lower inclined wedge 55, so as to drive the working roller of the upper roller system in the upper roller box 1 to rise and fall.

[0028] By using rigid structural components for both the upper frame 3 and the lower frame 4, the upper frame 3 and the lower frame 4 are ensured to be a rigid whole in both the lateral and longitudinal directions, which can effectively improve the lateral stiffness of the upper frame 3 and the lower frame 4.

[0029] The rigid support of the upper roller box 1 by the transverse part 31 of the upper frame 3 and the rigid support of the lower roller box 2 by the lower frame 4 reduces the transverse deflection of the working rollers of the upper roller box 1 and the lower roller box 2, thereby ensuring the straightness of the plate after straightening.

[0030] Furthermore, compared to existing gantry frames, the present invention can ensure sufficient lateral rigidity by increasing the cross-sectional dimensions of the upper frame 3 to ensure that the lateral portion 31 of the upper frame 3 is not limited by size.

[0031] In another preferred embodiment, the lower frame 4 has a base 41, a support shaft 42 fixed on both sides of the base 41, and a limiting slide 43 fixed on the outside of the support shaft 42. The second locking unit 7 is fixed on the lower frame 4, and the lower roller box 2 abuts against the base 41 through the second locking unit 7. The ball joint 8 is slidably sleeved on the support shaft 42. The upper frame 3 has arc-shaped guide plates 33 on both sides. The two arc-shaped guide plates 33 are abutted by the limiting slide 43 to limit the swing of the upper roller box 1.

[0032] In this specific embodiment, the base 41, support shaft 42 and limiting slide 43 of the lower frame 4 are connected by screws or welding to form an integral whole.

[0033] A sliding sleeve is provided inside the ball joint 8, and the support shaft 42 is slidably inserted in the sliding sleeve so that the ball joint 8 and the upper frame 3 can be raised and lowered under the drive of the pressing assembly 10.

[0034] Two arc-shaped guide plates 33 are abutted by the limiting slide rail 43 and slide up and down along the limiting slide rail 43 to ensure that the sliding trajectory of the upper frame 3 is within the production requirements, thereby ensuring that the deviation of the swing amplitude of the upper roller box 1 is within the production requirements, so as to further ensure the flatness of the plate after straightening.

[0035] In a further preferred embodiment, a spring balancing assembly 9 is provided between the upper frame 3 and the lower frame 4.

[0036] A spring balancing assembly 9 is installed between the longitudinal portion 32 of the upper frame 3 and the support shaft 42 of the lower frame 4 to achieve elastic support between the upper frame 3 and the lower frame 4. This not only provides a balancing force when the upper frame 3 is pressed down, eliminating the mechanical gap formed during the pressing process, but also provides an upward lifting force when the upper frame 3 needs to be lifted, so as to facilitate lifting the upper frame 3 to a preset position (i.e., the distance between the upper frame 3 and the lower frame 4 is opened to a certain distance).

[0037] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A straightening machine with a split frame, comprising a cooperating upper roller box and a lower roller box, characterized in that: It also includes a pressing assembly and an upper frame and a lower frame arranged vertically. Both the upper frame and the lower frame are rigid structural components. The upper frame has a connected transverse section and a longitudinal section. The upper roller box and the transverse section are connected and fixed by a first locking unit to reduce the transverse deflection of the working roller of the upper roller box. A ball joint is provided between the longitudinal section and the lower frame, and the ball joint is slidably sleeved on the lower frame. The lower roller box and the lower frame are connected and fixed by a second locking unit to reduce the transverse deflection of the working roller of the lower roller box. The pressing assembly drives the upper frame to swing along the strip conveying direction to adjust the inclination of the working roll of the upper roll box in the strip conveying direction; the pressing assembly drives the upper frame to rise and fall to adjust the downward pressure of the working roll of the upper roll box in the vertical direction. The lower frame has a base, support shafts fixed on both sides of the base, and limiting slides fixed on the outside of the support shafts; the second locking unit is fixed on the lower frame, and the lower roller box abuts against the base through the second locking unit; the ball joint is slidably sleeved on the support shaft, and the upper frame has arc-shaped guide plates on both sides, and the two arc-shaped guide plates are abutted by the limiting slides to limit the swing of the upper roller box.

2. The straightening machine with a split frame according to claim 1, characterized in that: A spring balancing assembly is provided between the upper frame and the lower frame.

3. The straightening machine with a split frame according to claim 1 or 2, characterized in that: A bending roller unit is mounted on the upper frame. The bending roller unit drives the upper roller system connected to the upper roller box to raise and lower the working rollers of the upper roller system in the upper roller box.

4. The straightening machine with a split frame according to claim 3, characterized in that: The bending roller unit includes a driver, a lead screw and nut pair, a slider, an upper inclined wedge, and a lower inclined wedge. The rotating shaft of the driver is connected to the lead screw and nut pair, and the lead screw of the lead screw and nut pair is fixedly connected to the slider. One side of the slider is slidably mounted on the upper frame, and the other side is connected to the upper inclined wedge. The upper inclined wedge and the lower inclined wedge form a sliding connection. The lower inclined wedge is connected to the upper roller system of the upper roller box.

5. The straightening machine with a split frame according to claim 4, characterized in that: The driver is a drive motor.

6. The straightening machine with a split frame according to claim 1, characterized in that: The first locking unit is a first locking cylinder.

7. The straightening machine with a split frame according to claim 1 or 6, characterized in that: The second locking unit is a second locking cylinder.

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