A board cutting apparatus and line

Abstract

The utility model discloses a kind of board cutting equipment and production line, board cutting equipment includes: first cutting member and second cutting member;The side wall in the thickness direction of first cutting member is attached with the side wall in the thickness direction of second cutting member;And, first cutting member is internally structured with the first through hole along the thickness direction of itself, second cutting member is internally structured with the second through hole along the thickness direction of itself, first through hole is aligned with second through hole;Second cutting member is rotated relative to first cutting member. Thus, by shearing mode, its force is limited on the very narrow shear band in the thickness direction of board, with highly concentrated local shear force, the shear strength of material can be efficiently overcome, cutout is neat, almost no impact wave or tensile stress that causes curling or deformation to the board area on both sides of cutout. Therefore, the present scheme can effectively avoid cutout curling problem, and flat section can be obtained by once cutting, without secondary cutting.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal cutting technology, and in particular to a sheet metal cutting device and production line. Background Technology

[0002] Currently, large sheet metal cutting in the production process is mainly carried out using cutting equipment such as shearing machines. These cutting machines use the vertical movement of blades to "cut" the sheet metal placed on the table below by the sharp cutting edge of the blades combined with speed and pushing force.

[0003] However, the above cutting method has some problems. First, when the board is impacted by a blade perpendicular to its thickness, the impact force of the "punch" (or cut) may be insufficient, causing the cut edge to curl. In this case, the curled area needs to be cut again, and the second-cut part is waste material. The above situation is particularly obvious when the board itself has insufficient rigidity or the board has a certain shape (such as bent board, curved board, etc.). Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a plate cutting equipment and production line. The plate cutting equipment ensures that the cut plate has neat edges after one cut by rotary cutting and does not generate waste.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] In a first aspect, this application discloses a sheet metal cutting device, comprising: a gantry frame, wherein a first cutting member and a second cutting member are disposed within the gantry frame; a side wall in the thickness direction of the first cutting member is fitted to a side wall in the thickness direction of the second cutting member; and the first cutting member has a first through-hole extending along its own thickness direction, and the second cutting member has a second through-hole extending along its own thickness direction, wherein the first through-hole and the second through-hole are aligned; the first through-hole is adapted to be connected to a conveyor belt for transporting sheet metal, and the second cutting member is rotatably fixed to the gantry frame and is rotatable relative to the first cutting member; wherein, the rotation of the second cutting member causes the second through-hole to be misaligned relative to the first through-hole, and after the second cutting member is rotated to its limit position, the first through-hole and the second through-hole are completely misaligned.

[0007] Its beneficial effects are as follows: through shearing, the force is confined to an extremely narrow shear band in the thickness direction of the sheet material, and the mechanism of action is pure shear failure rather than impact fracture. This highly concentrated local shear force can efficiently overcome the shear strength of the material, resulting in a clean cut and almost no shock waves or tensile stresses on the sheet material areas on both sides of the cut that could cause curling or deformation. Therefore, this solution can effectively avoid the problem of curling at the cut, obtaining a flat cross-section in a single cut without the need for secondary cutting, thus completely eliminating waste caused by curling. It is especially suitable for cutting easily deformable sheets such as thin sheets and curved shaped sheets.

[0008] Furthermore, both the first opening and the second opening are constructed as strip-shaped slits, and both the first opening and the second opening are bent strip-shaped structures.

[0009] Furthermore, the strip-shaped gap includes a main body segment and a bend extending from the main body segment, at least a portion of which is located above the main body segment.

[0010] Furthermore, the portions of the first and second openings used for contacting the plate are both constructed as planes.

[0011] Furthermore, the first cutting component is fixedly mounted on the gantry frame, which is also equipped with a driving component; in the second cutting component, a rotating shaft that is rotatably connected to the gantry frame is provided near one end of the second opening along the length direction, and the other end is rotatably connected to the moving end of the driving component.

[0012] Furthermore, a fixed cylinder is also provided on the gantry frame, and the main body of the hydraulic cylinder is fixed inside the fixed cylinder. A second driving member is connected to the end of the main body away from the gantry frame. The second driving member is adapted to drive the main body to move axially relative to the fixed cylinder.

[0013] Furthermore, the gantry frame includes two opposing vertical plates and a top plate disposed on the top of the two vertical plates, and the vertical plates are fixed on a fixed platform; a connector is disposed on the vertical plate, the connector is fixedly connected to the first cutting member, and the second cutting member is rotatably connected to the first cutting member through a rotating shaft.

[0014] Furthermore, the connector is a U-shaped bent plate, and its U-shaped structure defines an installation space, in which both the first cutting member and the second cutting member are disposed.

[0015] Furthermore, the installation space is defined between the two open segments of the U-shaped structure, one of the open segments being disposed opposite to the second cutting member, and a limiting pad is provided between the open segment and the second cutting member.

[0016] Secondly, this application discloses a production line, including: the aforementioned sheet metal cutting equipment and a sheet metal conveyor belt, wherein the sheet metal conveyor belt transports the sheet metal to the sheet metal cutting equipment. Attached Figure Description

[0017] Figure 1 A front view of a sheet metal cutting device according to some embodiments of this application;

[0018] Figure 2 for Figure 1 Cross-sectional view of centerline AA;

[0019] Figure 3 A side view of a sheet metal cutting device according to some embodiments of this application;

[0020] Figure 4 for Figure 3 Cross-sectional view of centerline BB;

[0021] Figure 5 This is a schematic diagram of a production line according to some embodiments of this application.

[0022] In the picture:

[0023] 100-Sheet metal cutting equipment;

[0024] 110-Fixed Platform

[0025] 120-Gantry frame, 121-Stud, 122-Vertical plate, 123-Top plate, 124-Bottom plate

[0026] 130 - First cutting component, 131 - First opening, 1311 - Main body section, 1312 - Back bend section, 11 - First section, 12 - Second section;

[0027] 140 - Second cutting part, 141 - Second opening;

[0028] 150 - Connector, 151 - Open section, 152 - Closed section;

[0029] 160-Fixed Cylinder;

[0030] 170-Hydraulic cylinder, 171-Main body, 172-Moving end, 173-Rotating arm;

[0031] 180-Limiting Pad;

[0032] 190-shaft;

[0033] 200-Conveyor Belt;

[0034] 300-Sheet material. Detailed Implementation

[0035] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] See Figures 1-5 To understand the sheet metal cutting device 100 and production line provided by this utility model:

[0037] refer to Figure 1 and Figure 2 As shown, a plate cutting device 100 according to an embodiment of this application includes a fixed platform 110 and a gantry frame 120 disposed on the fixed platform 110. The gantry frame 120 is fixed at the bottom by studs 121, and the gantry frame 120 is constructed as a square frame.

[0038] The gantry frame 120 has a first cutting element 130 and a second cutting element 140 within its square frame. In this embodiment, both the first cutting element 130 and the second cutting element 140 are constructed as rectangular plates, and they overlap. Specifically, one side wall of the first cutting element 130 in the thickness direction is fitted to one side wall of the second cutting element 140 in the thickness direction. The first cutting element 130 has a first through-hole 131 extending along its own thickness direction, and the second cutting element 140 has a second through-hole 141 extending along its own thickness direction. The first through-hole 131 and the second through-hole 141 are aligned.

[0039] As described above, the sheet material 300 is adapted to enter through the first opening 131, and then pass through the first opening 131 and the second opening 141 in sequence before exiting; wherein, the first opening 131 is adapted to be connected to the conveyor belt 200 for transporting the sheet material 300, and the sheet material 300 is transported to the first opening 131 by the conveyor belt 200; the second cutting member 140 is rotatably fixed to the gantry frame 120 and can rotate relative to the first cutting member 130.

[0040] In this way, the second cutting element 140 rotates relative to the first cutting element 130, causing the second opening 141 to be misaligned relative to the first opening 131. After the front end of the plate 300 passes through the aligned first opening 131 and second opening 141, the second cutting element 140 can be driven to rotate relative to the fixed first cutting element 130. Because the first cutting element 130 and the side wall of the second cutting element 140 are tightly fitted together in the thickness direction, their contact surfaces maintain a stable and tight relationship during relative rotation, so that the area where the plate 300 is sheared is in a very small area.

[0041] Based on this, the rotation of the second cutting element 140 causes a relative displacement between the edge of its second opening 141 and the edge of the first opening 131 of the first cutting element 130, resulting in misalignment. As the rotation continues, the first opening 131 and the second opening 141 exert a strong shearing force on the plate 300 located within them, in the adjacent gap between the first opening 131 and the second opening 141. This shearing force acts in the thickness direction of the plate 300 and generates concentrated stress along the shear line inside the plate 300. When the second cutting element 140 rotates to the limit position of its mechanical structure, the first opening 131 and the second opening 141 reach a maximum misalignment state, that is, their projections on the plane of rotation no longer overlap, thus completing the cutting.

[0042] Compared to existing technologies that rely on vertical impact from a blade to instantly "break" the sheet 300, the "breaking" action needs to overcome the tensile or compressive strength of the entire cross-section of the sheet 300. If the impact energy is insufficient or the sheet 300 has low stiffness (such as thin plates or curved panels), the cut area of ​​the sheet 300 is prone to plastic deformation rather than brittle fracture, resulting in curling and thus generating waste areas requiring secondary cutting. However, the shearing method in this embodiment restricts the force to an extremely narrow shear band in the thickness direction of the sheet 300, and the mechanism is pure shear failure rather than impact fracture. This highly concentrated local shear force can efficiently overcome the shear strength of the material, resulting in a clean cut and almost no shock waves or tensile stresses on the sheet 300 areas on both sides of the cut that could cause curling or deformation. Therefore, this solution effectively avoids the problem of curling at the cut, obtaining a flat cross-section in a single cut without the need for secondary cutting, thus completely eliminating waste caused by curling. It is particularly suitable for cutting easily deformable sheet materials 300 such as thin plates and curved panels.

[0043] Continue to refer to Figure 1For example, both the first opening 131 and the second opening 141 are bent strip-shaped slits to facilitate the passage of the bent sheet 300. It is understandable that, compared to the prior art method of "impacting" the sheet 300 from above with a knife edge, when facing a sheet 300 with a complex bent structure, the bent sheet 300 itself, due to the discontinuity of its geometry, has stress concentration areas at corners or contour changes. When the huge impact force of a vertical fall acts on the sheet 300, it is difficult to transmit evenly to the entire bent section; instead, it preferentially acts on the first contact points such as protrusions or edges, causing these local areas to bear instantaneous high pressure far exceeding the material's tolerance limit. This uneven impact not only significantly increases the risk of severe plastic deformation (i.e., severe curling) at the cut edge. In this embodiment of the application, by applying shearing force locally to the plate 300, the aforementioned situation will not occur. Therefore, in some examples, both the first opening 131 and the second opening 141 are bent strip-shaped gaps, so that when cutting the bent plate 300, edge curling and waste will not occur.

[0044] Furthermore, the strip-shaped slot includes a main body segment 1311 and a bend segment 1312 extending from the main body segment 1311, at least a portion of the bend segment 1312 being located above the main body segment 1311. Figure 1 As shown, taking the first opening 131 as an example, the roughly straight gap portion of the first opening 131 on the left side of the figure is the main body segment 1311, which passes through the main part of the board 300. At the end of the strip-shaped gap on the right side of the figure, the aforementioned bend segment 1312 extends outward. The bend segment 1312 includes a first segment 11 perpendicular to the main body segment 1311 and a second segment 12 that bends to be parallel to the main body segment 1311.

[0045] If the existing technology of using a downward-facing blade is adopted, the bending section 1312 located above the main body section 1311 will inevitably be subjected to the downward cutting action of the blade first, and the vertically arranged first section 11 will have a certain buffering effect. This causes the first section 11 to bend and deform, and due to the buffering, the bending section 1312 is not subjected to sufficient impact, resulting in severe curling and deformation, and generating more waste.

[0046] In this embodiment, since the strip gap is completely consistent with the structure of the plate 300, the portion of the plate 300 located in the second opening 141 will be gradually cut apart relative to the portion of the plate 300 in the first opening 131 as the second cutting member 140 rotates. At this time, the first segment 11 and the second segment 12 (i.e., each area of ​​the entire bend segment 1312) are each independently subjected to shearing force, and the aforementioned curling will not occur.

[0047] Furthermore, refer to Figure 2As shown, the portions of the first opening 131 and the second opening 141 used for contacting the sheet 300 are both constructed as planes. Thus, during the cutting process, when the edges of the first opening 131 and the second opening 141 apply shearing force to the sheet 300 due to rotational misalignment, these planar areas, closely conforming to the thickness direction of the sheet 300, form a stable support structure in the vicinity of the shearing point. This large-area, flat contact surface firmly clamps the upper and lower surfaces of the sheet 300 on both sides of the shear line, limiting the lateral movement or twisting tendency of the sheet 300 material when subjected to strong shear stress. Therefore, when the shearing force begins to act, it can effectively constrain the material on both sides of the cut of the sheet 300, preventing edge curling.

[0048] Next, refer to Figures 3-4 Further, some exemplary embodiments will be described.

[0049] like Figure 4 As shown, the gantry frame 120 includes two opposing vertical plates 122, a top plate 123 on top of the two vertical plates 122, and a bottom plate 124 below the top plate 123. The two vertical plates 122, the top plate 123, and the bottom plate 124 form the aforementioned square frame, and the vertical plates 122 are fixed to the fixed platform 110 via the bottom plate 124. Inside the square frame, a connector 150 is provided on the vertical plate 122. The connector 150 is fixedly connected to the first cutting member 130, and the second cutting member 140 is rotatably connected to the first cutting member 130 via a pivot 190.

[0050] Specifically, it can be combined with Figure 5 It is understood that the connector 150 is constructed as a U-shaped bent plate, with an installation space defined between the two open sections 151 in its U-shaped structure. The closed section 152 is fixed to the corresponding vertical plate 122 by multiple bolts. Both the first cutting member 130 and the second cutting member 140 are disposed within the installation space. Specifically, the first cutting member 130 is fixed to the connector 150 by bolts, thereby directly fixing it to the gantry frame 120.

[0051] A fixing cylinder 160 is also provided on the top plate 123 of the gantry frame 120. The main body 171 of the hydraulic cylinder 170 is provided inside the fixing cylinder 160, so that the main body 171 of the hydraulic cylinder 170 is fixed inside the fixing cylinder 160. The moving end 172 of the hydraulic cylinder 170 is connected to the second cutting member 140 through a rotating arm 173. In this way, the second cutting member 140 has a rotating shaft 190 near one end along the length direction of the second opening 141, which is rotatably connected to the gantry frame 120, and the other end is rotatably connected to the moving end 172 of the hydraulic cylinder 170, so that the second cutting member 140 is stably set inside the gantry frame 120.

[0052] Furthermore, continue to refer to Figure 5 The U-shaped structure defines an installation space between two open segments 151. One of the open segments 151 is positioned opposite the second cutting member 140, and a limiting pad 180 is provided between the open segment 151 and the second cutting member 140. By adjusting the thickness of the limiting pad 180, it can be ensured that the first cutting member 130 and the second cutting member 140 are in close contact without generating severe friction. This allows the second cutting member 140 to rotate stably within the rotation plane defined by the limiting pad 180 and the first cutting member 130 while maintaining relative rotation between the two.

[0053] In some preferred embodiments, the main body 171 of the hydraulic cylinder 170 is fixed inside the fixed cylinder 160; a second driving member (not shown in the figure) is externally connected to one end of the main body 171 away from the gantry 120, the second driving member being adapted to drive the main body 171 to move axially relative to the fixed cylinder 160. In some embodiments, the second driving member may be a large screw connected to the end of the main body 171, and the relative movement of the main body 171 and the fixed cylinder 160 is caused by adjusting the movement of the screw.

[0054] According to an embodiment of this application, a production line can be referred to Figure 5 It is understood that the sheet metal cutting device 100 and the sheet metal 300 conveyor belt 200 described in any of the foregoing embodiments are included, and the sheet metal 300 conveyor belt 200 transports the sheet metal 300 to the sheet metal cutting device 100.

[0055] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A sheet metal cutting device, characterized in that, include: A gantry frame, wherein a first cutting component and a second cutting component are provided inside the gantry frame; One sidewall in the thickness direction of the first cutting member is fitted to one sidewall in the thickness direction of the second cutting member; and the first cutting member has a first through-hole extending along its own thickness direction, and the second cutting member has a second through-hole extending along its own thickness direction, with the first through-hole and the second through-hole aligned. The first opening is adapted to connect to the conveyor belt for transporting the sheet metal, and the second cutting element is rotatably fixed to the gantry frame and can rotate relative to the first cutting element; The second cutting member rotates to offset the second opening relative to the first opening, and after the second cutting member rotates to its limit position, the first opening and the second opening are completely offset.

2. The sheet metal cutting device according to claim 1, characterized in that, Both the first opening and the second opening are constructed as strip-shaped slits, and both the first opening and the second opening are bent strip-shaped structures.

3. The sheet metal cutting device according to claim 2, characterized in that, The strip-shaped gap includes a main section and a bend extending from the main section, at least a portion of which is located above the main section.

4. The sheet metal cutting device according to any one of claims 1-3, characterized in that, The portions of the first and second openings used for contacting the plate are both constructed as planes.

5. The sheet metal cutting device according to claim 1 or 2, characterized in that, The first cutting component is fixedly mounted on the gantry frame, and the gantry frame is also provided with a driving component; In the second cutting component, a rotating shaft that is rotatably connected to the gantry is provided near one end of the second opening along the length direction, and a rotating shaft that is rotatably connected to the moving end of the driving component is provided near the other end.

6. The sheet metal cutting device according to claim 5, characterized in that, The gantry frame is also equipped with a fixed cylinder, and the main body of the hydraulic cylinder is fixed inside the fixed cylinder; A second driving member is connected to the end of the main body away from the gantry frame. The second driving member is adapted to drive the main body to move axially relative to the fixed cylinder.

7. The sheet metal cutting device according to claim 1, characterized in that, The gantry frame includes two opposing vertical plates and a top plate disposed on top of the two vertical plates, and the vertical plates are fixed on a fixed platform; A connector is provided on the vertical plate, which is fixedly connected to the first cutting component, and the second cutting component is rotatably connected to the first cutting component via a rotating shaft.

8. The sheet metal cutting device according to claim 7, characterized in that, The connector is a U-shaped bent plate, and its U-shaped structure defines an installation space. Both the first cutting component and the second cutting component are disposed within the installation space.

9. The sheet metal cutting device according to claim 8, characterized in that, The installation space is defined between the two open segments of the U-shaped structure, one of the open segments being disposed opposite to the second cutting member, and a limiting pad is provided between the open segment and the second cutting member.

10. A production line, characterized in that, include: The sheet metal cutting device and the sheet metal conveyor belt according to any one of claims 1-9, wherein the sheet metal conveyor belt transports the sheet metal to the sheet metal cutting device.

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