A die for traceless bending of a plate

Abstract

The utility model discloses a kind of moulds for plate traceless bending, including base, two sliding seats and two contact plates, installation groove is opened in the base, the sliding seat is placed in installation groove and is slidably contacted, gap is spaced between two the sliding seat, adjusting piece is cooperatively connected on the sliding seat, the adjusting piece penetrates base, the adjusting piece is cooperatively connected with base, the top of base is equipped with arc slot, the bottom of contact plate is equipped with arc surface, the arc surface is slidably contacted with arc slot, the top of two the contact plate is all located on the same horizontal plane, and the plate is placed on the top of contact plate. The utility model provides a kind of mould for plate traceless bending, reduce the friction of plate with bending mould when bending processing, reduce scratch, so that plate does not need to be polished after bending.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary sheet metal processing, and in particular to a mold for seamless bending of sheet metal. Background Technology

[0002] Bending dies are tools used to assist in bending sheet metal into shape. Different dies are composed of different bending parts. Bending dies mainly achieve the processing of the shape of an item by changing the physical state of the forming material.

[0003] When bending sheets using bending dies, the contact and friction between the die and the sheet at the stress points create scratches, reducing the surface smoothness of the finished sheet. This requires polishing to meet higher product standards, thus reducing the efficiency of sheet bending. Utility Model Content

[0004] The purpose of this invention is to provide a mold for seamless bending of sheet metal, which reduces friction between the sheet metal and the bending mold during bending, reduces scratches, and eliminates the need for sanding after bending.

[0005] The technical solution adopted by the mold for seamless bending of sheet metal disclosed in this utility model is as follows:

[0006] The device includes a base, two slides, and two contact plates. The base has a mounting groove, and the slides slide in the mounting groove. There is a gap between the two slides. An adjusting component is connected to each slide, passing through the base and engaging with it. The top of the base has an arc groove, and the bottom of each contact plate has an arc surface that slides in contact with the arc groove. The tops of the two contact plates are on the same horizontal plane, and the plate is placed on top of the contact plates.

[0007] As a preferred embodiment, the system also includes multiple tension springs. A first positioning rod passes through the slide block, and a second positioning rod passes through the contact plate. The second positioning rod is located near the edge of the arc surface and near the top of the contact plate. The two ends of the tension spring are connected to the first positioning rod and the second positioning rod, respectively.

[0008] As a preferred embodiment, the slide has a plurality of first slots arranged at intervals, and the arc surface has a plurality of second slots arranged at intervals. The first slots and the second slots are connected, and the tension springs are located in the first slots and the second slots respectively.

[0009] As a preferred embodiment, the outer side of the contact plate extends with a limiting edge, the limiting edge being close to the second positioning rod, and the limiting edge abutting the edge of the arc groove.

[0010] As a preferred embodiment, the two slides are symmetrical to each other, and multiple shims are inserted between the slides and the mounting groove, with the adjusting member passing through the shims.

[0011] The beneficial effects of the mold for seamless bending of sheet metal disclosed in this utility model are:

[0012] The sheet is placed on top of the two contact plates, with the bent part of the sheet aligned with the gap. When the outer upper mold touches the top and pushes the bent part of the sheet into the gap, the sheet pushes the arc surfaces of the two contact plates to slide in the arc grooves they contact. This transforms the friction between the sheet and the mold during bending into the sliding between the contact plates and the slide block, greatly reducing the friction amplitude between the sheet and the contact plates during bending, reducing scratches, and allowing the sheet to maintain a high gloss on the surface after bending without polishing.

[0013] By rotating the adjusting component, the position of the slide block in the mounting groove is adjusted, and the size of the gap is adjusted so that the mold can be adapted to bend plates of different thicknesses. This reduces the portion of thinner plates that are pushed into the gap during bending, and further shortens the friction amplitude between thinner plates and the contact plate during bending. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a mold for seamless bending of sheet metal according to this utility model.

[0015] Figure 2 This is a cross-sectional view of a mold for seamless bending of sheet metal according to this utility model.

[0016] Figure 3 This is a schematic diagram of the installation of the slide and contact plate of a mold for seamless bending of sheet metal according to this utility model.

[0017] Figure 4 This is a schematic diagram (sectional view) of the mold used for seamless bending of sheet metal according to this utility model. Detailed Implementation

[0018] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0019] Please refer to Figures 1-4 .

[0020] The present invention discloses a mold for seamless bending of sheet metal, comprising a base 1, two slides 2, two contact plates 3, and multiple tension springs 4.

[0021] The base 1 has an installation groove, and in this embodiment, the base 1 is preferably U-shaped; the bottom of the base 1 has an expansion groove, which is used to install on an external workbench, so that workers can bend the sheet 5.

[0022] In this embodiment, two slide blocks 2 are preferably symmetrical to each other. The slide blocks 2 are placed in the mounting groove, and the bottom of the slide blocks 2 slides in contact with the bottom of the mounting groove. There is a gap between the two slide blocks 2. The width of the gap is adjusted to correspond to the thickness of the processed plate 5. Multiple shims 11 are inserted between the outer side of the slide block 2 and the inner wall of the mounting groove. The width of the gap is adjusted by increasing or decreasing the number of shims 11, increasing or decreasing the distance between the two slide blocks 2.

[0023] Furthermore, an adjusting member 24 is connected to the slide 2. In this embodiment, two adjusting members 24 are preferred, and the adjusting member 24 is a bolt. The adjusting member 24 passes through the base 1 and is connected to the base 1. The adjusting member 24 passes through the shim 11. During installation, the shim 11 for adjusting the gap width is placed between the outer side of the slide 2 and the inner wall of the mounting groove. The adjusting member 24 passes through the base 1 and the shim 11 in sequence and is connected to the slide 2. Rotating the adjusting member 24 locks the slide 2 in the current position.

[0024] Furthermore, the top of the base 1 is provided with an arc groove 21, which is close to the gap. The top of the base 1 has a flat surface 211, which is close to the edge of the arc groove 21. The slide 2 is provided with a plurality of spaced first slots 22. A first positioning rod 23 passes through the slide 2. The first positioning rod 23 passes through each first slot 22. The first slot 22 is close to the pad 11.

[0025] The bottom of the contact plate 3 is provided with an arc surface 31, and multiple second slots 32 are provided on the arc surface 31 at intervals. A second positioning rod 33 passes through the contact plate 3. The second positioning rod 33 passes through each second slot 32. The second positioning rod 33 is close to the edge of the arc surface 31 and close to the top of the contact plate 3.

[0026] Furthermore, a limiting edge 311 extends from the outer side of the contact plate 3, and the limiting edge 311 is close to the second positioning rod 33; the contact plate 3 is placed on the top of the base 1, the arc surface 31 slides in contact with the arc groove 21, and the first groove 22 is connected to the second groove 32; the tops of the two contact plates 3 are both located on the same horizontal plane 211, the limiting edge 311 touches the edge of the arc groove 21, the limiting edge 311 touches the plane 211, the plane 211 is parallel to the top of the contact plate 3, and the plane 211 can limit the rotation angle of the contact plate 3 on the slide 2, so that the tops of the two contact plates 3 are located on the same horizontal plane 211.

[0027] In this embodiment, four tension springs 4 are preferred. The two ends of the tension springs 4 are connected to the first positioning rod 23 and the second positioning rod 33 respectively. The tension springs 4 are located in the first slot 22 and the second slot 32. The tension springs 4 pull the second positioning rod 33 to make the contact plate 3 rotate and reset on the slide 2.

[0028] In use, the plate 5 is placed on top of the contact plate 3, with the bent part of the plate 5 aligned with the gap. The upper mold pushes the bent part of the plate 5 into the gap, and the plate 5 pushes the arc surfaces 31 of the two contact plates 3 to slide in the arc grooves 21 they contact. This allows the contact plates 3 to rotate a certain angle on the slide block 2, so that the moving friction between the plate 5 and the mold during bending is transformed into the sliding between the contact plates 3 and the slide block 2. This greatly reduces the friction amplitude between the plate 5 and the contact plates 3 during bending, and avoids friction between the contact plates 3 and the plate 5. After the plate 5 is bent, it is removed from the contact plates 3. The tension spring 4 pulls the second positioning rod 33 to rotate the contact plates 3 back to their original position on the slide block 2. The limiting edge 311 touches the plane 211, so that the tops of the two contact plates 3 return to the state of being on the same horizontal plane 211.

[0029] By rotating the adjusting component 24, the slide 2 is removed from the base 1. After increasing or decreasing the number of shims 11, the slide 2 is reinstalled into the mounting groove, thereby adjusting the position of the slide 2 in the mounting groove, changing the distance between the two slides 2, and adjusting the size of the gap. This allows the mold to be adapted to bend plates 5 of different thicknesses, shortening the portion of the thinner plate 5 that is pushed into the gap during bending, and further reducing the friction amplitude between the thinner plate 5 and the contact plate 3 during bending.

[0030] This utility model provides a mold for seamless bending of sheet metal. The sheet metal is placed on top of two contact plates, with the bent part of the sheet metal aligned with the gap. When the outer upper mold touches the top and pushes the bent part of the sheet metal into the gap, the sheet metal pushes the arc surfaces of the two contact plates to slide in the arc grooves they contact. This transforms the friction between the sheet metal and the mold during bending into the sliding between the contact plates and the slide block, greatly reducing the friction amplitude between the sheet metal and the contact plates during bending, reducing scratches, and allowing the sheet metal to maintain a high gloss without polishing after bending.

[0031] By rotating the adjusting component, the position of the slide block in the mounting groove is adjusted, and the size of the gap is adjusted so that the mold can be adapted to bend plates of different thicknesses. This reduces the portion of thinner plates that are pushed into the gap during bending, and further shortens the friction amplitude between thinner plates and the contact plate during bending.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A mold for seamless bending of sheet metal, used to assist in bending sheet metal, characterized in that, Includes a base, two slides, and two contact plates; The base has an installation groove, the slide is placed in the installation groove and slides in contact, there is a gap between the two slides, an adjustment component is connected to the slide, the adjustment component passes through the base and is connected to the base, and the top of the base has an arc groove. The bottom of the contact plate has an arc surface, which slides in contact with the arc groove. The tops of the two contact plates are located on the same horizontal plane, and the plate is placed on top of the contact plate.

2. The mold for seamless bending of sheet metal as described in claim 1, characterized in that, It also includes multiple tension springs, a first positioning rod passing through the slide, a second positioning rod passing through the contact plate, the second positioning rod being near the edge of the arc surface and near the top of the contact plate, and the two ends of the tension spring being connected to the first positioning rod and the second positioning rod respectively.

3. The mold for seamless bending of sheet metal as described in claim 2, characterized in that, The slide block has multiple first slots arranged at intervals, and the arc surface has multiple second slots arranged at intervals. The first slots and the second slots are connected, and the tension springs are located in the first slots and the second slots respectively.

4. The mold for seamless bending of sheet metal as described in claim 3, characterized in that, The outer side of the contact plate extends into a limiting edge, which is close to the second positioning rod and touches the edge of the arc groove.

5. A mold for seamless bending of sheet metal as described in claim 4, characterized in that, The two slides are symmetrical to each other, and multiple shims are inserted between the slides and the mounting groove, with the adjusting member passing through the shims.

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