Lower cross beam for bending machine

Abstract

A lower cross beam for a bending machine relates to the technical field of steel plate bending processing equipment and comprises two opposite side plates, two end plates are fixedly arranged between the two side plates, the tops of the side plates and the tops of the end plates are fixedly connected with a lower cross beam mounting plate, and a lower pressing die device is detachably mounted on the lower cross beam mounting plate; the lower pressing die device comprises two lower pressing die assemblies which are arranged in parallel, the lower pressing die assemblies are detachably installed on the lower cross beam installation plate, the distance between the two lower pressing die assemblies is adjustable, an adjusting gap is formed between the lower pressing die assemblies and the lower cross beam installation plate, and a supporting assembly is contained in the adjusting gap. The lower pressing die assembly and the lower cross beam mounting plate are detachably connected through the supporting assembly. The width of the lower pressing die assembly is larger than that of the supporting assembly. The position of the lower pressing die can be adjusted, the application range is expanded, the production cost is reduced, and the production efficiency is improved; and meanwhile, the bending strength of the lower pressing die is enhanced, and the bending effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel plate bending processing equipment, in particular to a lower crossbeam for a bending machine. Background Art

[0002] The manufacturing process of welded steel pipes in the prior art usually involves bending and curling a steel plate into a cylindrical shape and then welding the two edges of the steel plate to obtain a steel pipe. The steel plate bending or curling process usually uses a bending machine to repeatedly press and bend the steel plate to bend the steel plate into a tubular shape. First, a bending machine is used to bend one half of the steel plate to form a C-shaped structure, and then the other half of the steel plate is bent by the bending machine to form another C-shaped structure. The two C-shaped structures are arranged opposite to each other to form a cylindrical workpiece with an opening. After the cylindrical workpiece is removed from the bending machine, the opening is manually spot welded and butt welded to form a complete steel pipe.

[0003] Existing, when a bending machine is used to bend a steel plate, it is necessary to use a lower die to cooperate with an upper die on a pressure head to bend the steel plate into a circle. However, the lower die is mostly directly fixed on the lower beam, and the position of the lower die cannot be adjusted. This results in the need to replace different lower dies when bending steel plates of different thicknesses and different bending angles, which is time-consuming, labor-intensive and costly. Utility Model Content

[0004] In view of this, the technical problem to be solved by the utility model is: to provide a lower crossbeam for a bending machine, which can adjust the position of the lower die, expand the scope of application, reduce production costs, and improve production efficiency; at the same time, enhance the bending strength of the lower die and improve the bending effect.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A lower crossbeam for a bending machine, comprising two oppositely arranged side plates, two end plates fixedly arranged between the two side plates, the tops of the side plates and the end plates are fixedly connected to a lower crossbeam mounting plate, and a lower pressing die device is detachably mounted on the lower crossbeam mounting plate;

[0007] The lower die device comprises two lower die assemblies arranged in parallel, the lower die assemblies are detachably mounted on the lower beam mounting plate, the spacing between the two lower die assemblies is adjustable, an adjustment gap is arranged between the lower die assemblies and the lower beam mounting plate, a support assembly is accommodated in the adjustment gap, and the support assembly detachably connects the lower die assembly to the lower beam mounting plate;

[0008] The width of the lower die assembly is greater than the width of the support assembly.

[0009] Preferably, the lower pressing die assembly comprises a plurality of pressing members sequentially arranged along the length direction of the lower cross beam mounting plate, and the top and bottom ends of the pressing members are both convex outwards in an arc shape.

[0010] Preferably, the pressing member is provided with a plurality of strip-shaped through holes arranged along its width direction, and the plurality of strip-shaped through holes are arranged equidistantly along the length direction of the pressing member.

[0011] Preferably, the support assembly includes a plurality of shims arranged along the length direction of the lower cross beam mounting plate, and there is a distance between the plurality of shims.

[0012] Preferably, two mutually parallel limit strips are arranged on the lower cross beam mounting plate along its length direction, the limit strip is arranged on the outer side of the washer and forms the adjustment gap with the lower pressure piece, and the adjusting bolt passes through the washer to fix the limit strip to the lower pressure piece.

[0013] Preferably, the length of the washer located on the outer side of the connection between two adjacent pressing members is greater than the length of the other washer.

[0014] Preferably, a plurality of rib plates are fixedly provided between the two side plates, and the plurality of rib plates are equidistantly arranged along the length direction of the lower cross beam mounting plate.

[0015] Preferably, the bottom of the lower cross beam mounting plate is fixedly connected to a cross bar, the cross bar is arranged along the length direction of the lower cross beam mounting plate, and the cross bar is fixedly connected to the rib plate.

[0016] Preferably, a plurality of connecting columns are fixedly provided between the two side panels.

[0017] After adopting the above technical solution, the beneficial effects of the utility model are:

[0018] In the utility model, two oppositely arranged side plates are provided, and two end plates are fixedly provided between the two side plates. The tops of the side plates and the end plates are fixedly connected to the lower cross beam mounting plate, and a lower die device is detachably installed on the lower cross beam mounting plate; the lower die device is used to cooperate with the upper die to bend the steel plate into a circle. Specifically, the lower die device comprises two lower die assemblies arranged in parallel, the lower die assemblies are detachably mounted on the lower beam mounting plate, the spacing between the two lower die assemblies is adjustable, and steel plates with different thicknesses and different bending angle requirements can be bent in cooperation with the upper die, thereby expanding the scope of application, reducing production costs, and improving production efficiency; an adjustment gap is arranged between the lower die assembly and the lower beam mounting plate, and a support assembly is accommodated in the adjustment gap, and the support assembly detachably connects the lower die assembly to the lower beam mounting plate; the support assembly supports the lower die assembly along the width direction of the lower beam mounting plate, thereby enhancing the bending support strength of the lower die assembly, and preventing the lower die assembly from moving when bending in cooperation with the upper die, thereby improving the bending accuracy; the width of the lower die assembly is greater than the width of the support assembly, thereby ensuring the self-strength of the lower die assembly, and being able to provide sufficient support effect to the steel plate when subjected to the downward pressure exerted on the steel plate by the upper die, and based on the principle of three-point arc formation, the steel plate is bent multiple times to form a cylindrical shape, thereby meeting the production requirements of bending into a circle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic structural diagram of a lower crossbeam for a bending machine according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A magnified view of part A;

[0022] Figure 3 It is a side view of the lower cross beam for the bending machine according to the embodiment of the utility model;

[0023] Figure 4 yes Figure 1 A partial cross-sectional view of

[0024] Figure 5 yes Figure 4 A schematic diagram of the structure in another direction;

[0025] In the figure:

[0026] 1. Side plate; 11. Rib plate; 12. Connecting column;

[0027] 2. End plate;

[0028] 3. Lower crossbeam mounting plate; 31. Crossbar;

[0029] 4. Lower die device; 41. Lower die assembly; 411. Lower pressing piece; 412. Strip through hole; 42. Adjusting gap; 43. Support assembly; 431. Washer; 44. Limiting strip; 441. Adjusting bolt. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] like Figures 1 to 5 As shown in common, the utility model includes two oppositely arranged side panels 1, and two end panels 2 are fixedly arranged between the two side panels 1. The tops of the side panels 1 and the end panels 2 are fixedly connected to the lower cross beam mounting plate 3, and the lower cross beam mounting plate 3 is detachably mounted with a lower die device 4; the lower die device 4 is used to cooperate with the upper die to bend the steel plate into a circle.

[0032] The lower die assembly 4 includes two lower die assemblies 41 arranged in parallel. The lower die assemblies 41 are detachably mounted on the lower beam mounting plate 3. The spacing between the two lower die assemblies 41 is adjustable. Steel plates with different thicknesses and different bending angles can be bent in cooperation with the upper die, which expands the scope of application, reduces production costs, and improves production efficiency. An adjustment gap 42 is provided between the lower die assembly 41 and the lower beam mounting plate 3. A support assembly 43 is accommodated in the adjustment gap 42. The support assembly 43 detachably connects the lower die assembly 41 to the lower beam mounting plate 3. The support assembly Part 43 supports the lower die assembly 41 along the width direction of the lower beam mounting plate 3, thereby enhancing the bending support strength of the lower die assembly 41, and preventing the lower die assembly 41 from moving when bending in cooperation with the upper die, thereby improving the bending accuracy; wherein, the width of the lower die assembly 41 is greater than the width of the support component 43, thereby ensuring the self-strength of the lower die assembly 41, and being able to provide sufficient support to the steel plate when subjected to the downward pressure exerted by the upper die on the steel plate, based on the principle of three-point arc, the steel plate is bent multiple times to form a cylindrical shape, thereby meeting the production requirements of bending into a circle.

[0033] In the utility model, the lower pressing die assembly 41 includes a plurality of pressing members 411 arranged in sequence along the length direction of the lower crossbeam mounting plate 3, and the top and bottom ends of the pressing members 411 are both convex outwardly and are set in an arc shape. There is a spacing between two parallel pressing members 411, wherein the top ends of the two arcs cooperate with an upper pressing die at the same time, and the steel plate is bent multiple times to form a cylindrical shape. The bottom end of the pressing member 411 is also set in an arc shape, so that when the pressing member 411 is installed, its top and bottom ends can cooperate with the upper pressing die, and there is no need to distinguish its top and bottom ends, thereby improving the installation efficiency.

[0034] The lower pressing member 411 is provided with a plurality of strip-shaped through holes 412 arranged along its width direction, and the plurality of strip-shaped through holes 412 are arranged equidistantly along the length direction of the lower pressing member 411. The strip-shaped through holes 412 are arranged along the width direction, and during the process of installing the lower pressing member 411 on the lower crossbeam mounting plate 3, the position of the lower pressing member 411 can be adjusted along the width direction by bolts and the strip-shaped through holes 412, and the bending angle can be changed, and the application range is wide.

[0035] The support assembly 43 includes a plurality of washers 431 arranged along the length direction of the lower cross beam mounting plate 3, and there is a spacing between the washers 431. The washers 431 support the lower pressing member 411 along the width direction, wherein the washers 431 and the lower pressing member 411 are further provided with at least one adjustment shim (not shown in the figure) for adjusting the position of the lower pressing member 411 in cooperation with the washers 431.

[0036] Two mutually parallel limit strips 44 are arranged on the lower cross beam mounting plate 3 along its length direction. The limit strip 44 is arranged on the outer side of the washer 431 and forms an adjustment gap 42 with the lower pressure piece 411. The adjusting bolt 441 passes through the washer 431 to fix the limit strip 44 to the lower pressure piece 411.

[0037] The length of the washer 431 located outside the connection between two adjacent pressing members 411 is greater than the length of other washer 431 , that is, one washer 431 supports the connection between two adjacent pressing members 411 at the same time.

[0038] A plurality of rib plates 11 are fixedly arranged between the two side plates 1 , and the plurality of rib plates 11 are arranged equidistantly along the length direction of the lower cross beam mounting plate 3 . The arrangement of the rib plates 11 enhances the connection strength between the two side plates 1 .

[0039] The bottom of the lower beam mounting plate 3 is fixedly connected to the cross bar 31 , which is arranged along the length direction of the lower beam mounting plate 3 , and the cross bar 31 is fixedly connected to the rib plate 11 . The arrangement of the cross bar 31 enhances the supporting strength of the lower beam mounting plate 3 .

[0040] A plurality of connecting columns 12 are fixedly disposed between the two side plates 1 to increase the connection strength.

[0041] When the utility model is in use, the position of the pressing member 411 is adjusted, and the spacing between the two parallel pressing members 411 is determined to meet the bending requirements of the steel plate. After the position is determined, the washer 431, the pressing member 411 and the limit strip 44 are fixedly connected by adjusting the bolts 441, and the two parallel pressing members 411 in the utility model are respectively arranged on both sides of the upper die, wherein the upper die is located above the utility model, and the upper die moves up and down to bend the steel plate located between the upper die and the lower die assembly 41, and the bending depth value and the steel plate movement value are affected by the thickness of the steel plate and the diameter of the cylinder.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lower cross beam for a bending machine, characterized in that: It comprises two side plates arranged opposite to each other, two end plates are fixedly arranged between the two side plates, the tops of the side plates and the end plates are fixedly connected to the lower cross beam mounting plate, and the lower pressing die device is detachably mounted on the lower cross beam mounting plate; The lower die device comprises two lower die assemblies arranged in parallel, the lower die assemblies are detachably mounted on the lower beam mounting plate, the spacing between the two lower die assemblies is adjustable, an adjustment gap is arranged between the lower die assemblies and the lower beam mounting plate, a support assembly is accommodated in the adjustment gap, and the support assembly detachably connects the lower die assembly to the lower beam mounting plate; The width of the lower die assembly is greater than the width of the support assembly.

2. The lower cross beam for a bending machine according to claim 1, characterized in that: The lower pressing die assembly comprises a plurality of lower pressing pieces arranged in sequence along the length direction of the lower cross beam mounting plate, and the top and bottom ends of the lower pressing pieces are both convex outwards and arranged in an arc shape.

3. The lower cross beam for a bending machine according to claim 2, characterized in that: The pressing member is provided with a plurality of strip-shaped through holes arranged along the width direction thereof, and the plurality of strip-shaped through holes are arranged at equal distances along the length direction of the pressing member.

4. The lower cross beam for a bending machine according to claim 2, characterized in that: The support assembly includes a plurality of washers arranged along the length direction of the lower cross beam mounting plate, and there are spacings between the washers.

5. The lower cross beam for a bending machine according to claim 4, characterized in that: Two mutually parallel limit strips are arranged on the lower cross beam mounting plate along its length direction, the limit strip is arranged on the outer side of the washer and forms the adjustment gap with the lower pressure piece, and the adjusting bolt passes through the washer to fix the limit strip to the lower pressure piece.

6. The lower cross beam for a bending machine according to claim 4, characterized in that: The length of the washer located outside the connection between two adjacent pressing members is greater than the length of the other washer.

7. The lower cross beam for a bending machine according to claim 1, characterized in that: A plurality of rib plates are fixedly arranged between the two side plates, and the plurality of rib plates are arranged at equal distances along the length direction of the lower cross beam mounting plate.

8. The lower cross beam for a bending machine according to claim 7, characterized in that: The bottom of the lower cross beam mounting plate is fixedly connected to the cross bar, the cross bar is arranged along the length direction of the lower cross beam mounting plate, and the cross bar is fixedly connected to the rib plate.

9. The lower cross beam for a bending machine according to claim 7, characterized in that: A plurality of connecting columns are fixedly arranged between the two side plates.

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