CN109967615B - Bending cutter set for forming closed annular edge - Google Patents
Bending cutter set for forming closed annular edge Download PDFInfo
- Publication number
- CN109967615B CN109967615B CN201711447777.2A CN201711447777A CN109967615B CN 109967615 B CN109967615 B CN 109967615B CN 201711447777 A CN201711447777 A CN 201711447777A CN 109967615 B CN109967615 B CN 109967615B
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- bending
- obtuse angle
- angle
- forming
- tool unit
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- 238000005452 bending Methods 0.000 title claims abstract description 156
- 238000007493 shaping process Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 6
- 210000001624 hip Anatomy 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/12—Edge-curling
- B21D19/14—Reinforcing edges, e.g. armouring same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Knives (AREA)
Abstract
The invention relates to a bending tool set for forming a closed annular edge, which comprises a step bending tool unit, an obtuse angle bending tool unit, a first bending forming tool unit and an obtuse angle shaping tool unit which are sequentially arranged according to working procedures, wherein the step bending tool unit is used for forming a step-shaped bend at the front end of a steel plate, the obtuse angle bending tool unit is used for forming an obtuse angle bend at the rear end of the step-shaped bend, the first bending forming tool unit is used for forming a first bend after the obtuse angle bend, and the obtuse angle shaping tool unit is used for further bending the obtuse angle bend to form a second bend. Compared with the prior art, the invention forms the obtuse angle bending firstly, then bypasses the formed stepped bending and the obtuse angle bending by using the first bending forming cutter unit to form the first bending, and finally changes the obtuse angle bending into the second bending by using the obtuse angle shaping cutter unit to finish the support for closing the annular edge.
Description
Technical Field
The invention relates to the technical field of furniture production, in particular to a bending cutter set for forming a closed annular edge.
Background
The iron sheet cabinet is made of cold-rolled steel sheet (commonly called iron sheet) and features light weight, easy movement, fire-proof, moisture-proof, insect-proof, moth-proof and corrosion-proof. The manufacturing of the iron sheet cabinet is to punch, cut and bend a plurality of steel plates to form components such as a top plate, a door plate, a panel, a partition plate and the like, and then assemble the components together by welding to form a final product. In order to strengthen the edge of the member, a closed annular edge is formed by bending the edge of the steel plate. In the existing processing technology, as shown in fig. 1, an upper cutter with a V-shaped bottom is used for pressing a steel plate into a lower cutter die with a V-shaped lower part, and a closed annular edge is formed after 3 times of bending. However, when the existing bending tool is bent for the last time, the bent part can prevent the pressing down of the upper tool, as shown in fig. 2, so that a complete annular seal cannot be formed, and the product quality is affected.
Disclosure of Invention
The object of the present invention is to overcome the drawbacks of the prior art described above by providing a bending tool set for forming a closed annular edge.
The aim of the invention can be achieved by the following technical scheme: the utility model provides a bending tool group for forming closed annular edge, this closed annular is including the first bending that sets gradually, the second is bent and the echelonment is bent, first bending and second bend and be the right angle, each angle that the echelonment was bent is the right angle, first bending is connected with the steel sheet main part, bending tool group includes the ladder that sets gradually according to the process cutter unit that bends, obtuse angle cutter unit that bends, first bending forming tool unit and obtuse angle plastic cutter unit that bend, the ladder is bent the cutter unit and is used for forming the echelonment at the steel sheet front end and bends, the obtuse angle is bent the cutter unit and is used for forming the obtuse angle at the echelonment rear end and bends, the obtuse angle plastic cutter unit is used for bending the obtuse angle and further bends and form the second bending. The process comprises the steps of forming an obtuse angle bend, then bypassing the formed stepped bend and the obtuse angle bend by using a first bending forming tool unit to form a first bend, and finally changing the obtuse angle bend into a second bend by using an obtuse angle forming tool unit to complete the support for closing the annular edge.
The step bending cutter unit comprises a forward right angle bending unit and a reverse right angle bending unit, the forward right angle bending unit comprises a V-shaped upper cutter die which protrudes downwards and a lower die holder which is matched with the upper cutter die and is recessed downwards, the reverse right angle bending unit comprises a V-shaped lower cutter die which protrudes upwards and an upper die holder which is matched with the lower cutter die and is recessed upwards, and the vertex angle of the V-shaped in the step bending cutter unit is a right angle. According to actual demands, the forward right-angle bending unit and the reverse right-angle bending unit can be randomly combined to form 1 or more stepped bending.
The obtuse angle bending cutter unit comprises a V-shaped obtuse angle cutter die which protrudes downwards and an obtuse angle die holder which is matched with the obtuse angle cutter die and sunken downwards, and the vertex angle of the V-shaped in the obtuse angle bending cutter unit is 120-125 degrees.
The first bending forming tool unit comprises a bending tool and a V-shaped bending die holder which is matched with the bending tool and is sunken downwards, the bending tool comprises a bending part with a right trapezoid bottom and a connecting part which is arranged above the bending part and is integrally formed with the bending part, and a right angle which is connected with a shorter bottom edge in the right trapezoid is downwards arranged and is matched with the bending die holder. The bending part is arranged into a right trapezoid, can bypass the ladder-shaped bending, and forms a right-angle first bending after the obtuse-angle bending.
Preferably, the included angle of the extension lines of the two waists in the right trapezoid is 30-35 degrees, and the included angle is different from the vertex angle of the V-shaped in the obtuse angle bending cutter unit by 90 degrees. This setting can guarantee when forming first bending, the forefront of echelonment bending just with right trapezoid's oblique waist butt.
The length of the longer waist in the right trapezoid is longer than that of the stepped bending. The arrangement avoids contact between the connecting part and the stepped bending, so that the first bending forming cutter unit bypasses the stepped bending to form a first bending.
The obtuse angle plastic cutter unit include upward sunken shaping upper die that is the V font and the downward sunken shaping lower die that is the V font, the apex angle of V font is the right angle in shaping upper die and the shaping lower die, when bending, first bending is placed in the shaping lower die, the right angle of being closest to the obtuse angle in the echelonment bending is bent and is placed in the shaping upper die.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the obtuse angle bending is firstly formed, then the formed stepped bending and the obtuse angle bending are bypassed by using the first bending forming tool unit to form the first bending, finally the obtuse angle bending is changed into the second bending by using the obtuse angle shaping tool unit, so that the support for closing the annular edge is completed, and the quality of a product is ensured.
Drawings
FIG. 1 is a schematic diagram of a step of bending a conventional steel plate to form an annular closed edge;
FIG. 2 is a schematic defect view of a conventional steel plate bent to form an annular closed edge;
FIG. 3 is a schematic diagram of a right angle forward bending unit according to the present invention;
FIG. 4 is a schematic diagram of a reverse right angle bending unit according to the present invention;
FIG. 5 is a schematic view of the obtuse angle bending cutter unit according to the present invention;
FIG. 6 is a schematic view of a first bending forming cutter unit according to the present invention;
FIG. 7 is a schematic view of the obtuse angle shaping cutter unit of the present invention;
FIG. 8 is a schematic diagram showing the steps of forming the annular closed edge of the steel plate according to the present invention.
Wherein 1 is a steel plate, 2 is a forward right angle bending unit, 21 is an upper cutter die, 22 is a lower die holder, 3 is a reverse right angle bending unit, 31 is a lower cutter die, 32 is an upper die holder, 4 is an obtuse angle bending cutter unit, 41 is an obtuse angle cutter die, 42 is an obtuse angle die holder, 5 is a first bending forming cutter unit, 51 is a bending die holder, 52 is a bending part, 53 is a connecting part, 6 is an obtuse angle shaping cutter unit, 61 is a shaping upper die, 62 is a shaping lower die, A is an obtuse angle, B is a stepped bending, C is a second bending, and D is a first bending.
Detailed Description
The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.
Example 1
The utility model provides a cutter group of bending for forming closed ring edge, this closed ring is including the first D of bending that sets gradually, the second C of bending and echelonment bend B, first D and the second of bending C are right angle, each angle that the echelonment was bent B is right angle, first D of bending is connected with steel sheet 1 main part, as shown in FIG. 8, cutter group of bending includes the ladder cutter unit of bending, obtuse angle cutter unit 4 of bending, first bending forming cutter unit 5 and obtuse angle plastic cutter unit 6 that set gradually according to the process.
The ladder cutter unit of bending includes forward right angle cutter unit 2 and reverse right angle cutter unit 3 of bending, and the ladder cutter unit of bending is used for forming the echelonment at steel sheet 1 front end and bends, and wherein, forward right angle cutter unit 2's structure is as shown in fig. 3, including bellied V font upper die 21 and with upper die 21 assorted undercut die holder 22 down, reverse right angle cutter unit 3's structure is as shown in fig. 4, including bellied V font lower die 31 and with lower die 31 assorted undercut upper die holder 32 down, the apex angle of V font is the right angle in the ladder cutter unit of bending. According to actual demands, the forward right-angle bending unit 2 and the reverse right-angle bending unit 3 can be randomly combined to form 1 or more ladder-shaped bends.
The obtuse angle bending tool unit 4 is configured as shown in fig. 5, and is configured to form an obtuse angle bend on the steel plate 1 at the rear end of the stepped bending, and includes a V-shaped obtuse angle die 41 protruding downward and a concave obtuse angle die holder 42 matching with the obtuse angle die 41, where the apex angle of the V-shape in the obtuse angle bending tool unit 4 is an obtuse angle a, and in this embodiment, 121.5 ° is used.
The first bending forming tool unit 5 is configured as shown in fig. 6, and is configured to form a first bend above the steel plate 1 after being bent at an obtuse angle, and includes a bending tool and a V-shaped bending die holder 51 that is matched with the bending tool and is recessed downward, the bending tool includes a bending portion 52 with a right trapezoid bottom, and a connecting portion 53 that is disposed above the bending portion 52 and is integrally formed with the bending portion 52, and a right angle connected to a shorter bottom edge in the right trapezoid is disposed downward and is matched with the bending die holder 51. The bending portion 52 is formed in a right trapezoid shape, and can be bent around the step shape, and a right-angled first bend is formed at the rear end of the obtuse-angle bend.
The included angle of the extension lines of the two waists in the right trapezoid is 31.5 degrees, and the length of the longer waists in the right trapezoid is larger than the length of the stepped bending.
The obtuse angle shaping tool unit 6 is configured as shown in fig. 7, and is configured to bend the obtuse angle to form a second bend, and includes an upper shaping die 61 that is recessed upward to form a V-shape, and a lower shaping die 62 that is recessed downward to form a V-shape, wherein the top angles of the V-shapes in the upper shaping die 61 and the lower shaping die 62 are right angles, when the first bend is placed in the lower shaping die 62, and one right angle bend closest to the obtuse angle bend in the stepped bend is placed in the upper shaping die 61.
Claims (5)
1. The bending tool set is characterized by comprising a step bending tool unit, an obtuse angle bending tool unit, a first bending forming tool unit and an obtuse angle shaping tool unit which are sequentially arranged according to the working procedure, wherein the step bending tool unit is used for forming a step bending at the front end of a steel plate, the obtuse angle bending tool unit is used for forming an obtuse angle bending at the rear end of the step bending, the first bending forming tool unit is used for forming a first bending at the rear end of the obtuse angle bending, and the obtuse angle shaping tool unit is used for further bending the obtuse angle bending to form a second bending;
the first bending forming tool unit comprises a bending tool and a V-shaped bending die holder which is matched with the bending tool and is sunken downwards, the bending tool comprises a bending part with a right trapezoid bottom and a connecting part which is arranged above the bending part and is integrally formed with the bending part, and a right angle which is connected with a shorter bottom edge in the right trapezoid is downwards arranged and is matched with the bending die holder;
the obtuse angle plastic cutter unit include upward sunken shaping upper die that is the V font and the downward sunken shaping lower die that is the V font, the apex angle of V font is the right angle in shaping upper die and the shaping lower die, when bending, first bending is placed in the shaping lower die, the right angle of being closest to the obtuse angle in the echelonment bending is bent and is placed in the shaping upper die.
2. The bending tool set for forming a closed annular edge according to claim 1, wherein the step bending tool unit comprises a forward right angle bending unit and a reverse right angle bending unit, the forward right angle bending unit comprises a V-shaped upper die which protrudes downwards and a lower die holder which is matched with the upper die, the reverse right angle bending unit comprises a V-shaped lower die which protrudes upwards and an upper die holder which is matched with the lower die and is recessed upwards, and the vertex angle of the V-shape in the step bending tool unit is a right angle.
3. The bending tool set for forming a closed annular edge according to claim 1, wherein the obtuse angle bending tool unit comprises a V-shaped obtuse angle die which protrudes downwards and an obtuse angle die holder which is matched with the obtuse angle die and is recessed downwards, and the vertex angle of the V-shape in the obtuse angle bending tool unit is 120-125 °.
4. The bending tool set for forming a closed annular edge according to claim 1, wherein an included angle between extension lines of two waists in the right trapezoid is 30-35 degrees, and is different from a vertex angle of a V-shape in the obtuse angle bending tool unit by 90 degrees.
5. A bending tool set for forming a closed loop edge according to claim 1 wherein the length of the longer waist in the right trapezoid is greater than the length of the stepped bend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711447777.2A CN109967615B (en) | 2017-12-27 | 2017-12-27 | Bending cutter set for forming closed annular edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711447777.2A CN109967615B (en) | 2017-12-27 | 2017-12-27 | Bending cutter set for forming closed annular edge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109967615A CN109967615A (en) | 2019-07-05 |
| CN109967615B true CN109967615B (en) | 2024-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711447777.2A Active CN109967615B (en) | 2017-12-27 | 2017-12-27 | Bending cutter set for forming closed annular edge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109967615B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10216839A (en) * | 1997-02-05 | 1998-08-18 | Nakajima Kokan Kk | Forming press device for producing square steel tube |
| CN2766992Y (en) * | 2005-02-02 | 2006-03-29 | 马鞍山市联盟模具机械工业有限公司 | Impress-free mold |
| CN1966171A (en) * | 2005-11-15 | 2007-05-23 | 小松产机株式会社 | Die for trigger bending machine and method for manufacturing the same |
| CN102672051A (en) * | 2012-05-30 | 2012-09-19 | 苏州旭创精密模具有限公司 | Die for bending switch butterfly elastic piece |
| CN203526335U (en) * | 2013-09-11 | 2014-04-09 | 唐道雁 | Upper knife of bending machine |
| CN103878246A (en) * | 2014-04-08 | 2014-06-25 | 安徽新源精密模具有限公司 | Bending machine die for nine-bend workpiece and machining method of nine-bend workpiece |
| CN104624810A (en) * | 2015-02-12 | 2015-05-20 | 航天科工哈尔滨风华有限公司 | Bending die and bending method of pentagonal cabinet shell |
| CN204486599U (en) * | 2015-03-04 | 2015-07-22 | 广州海格机械有限公司 | A kind of Bending Mould of enclosed type sheet metal component |
| CN206104670U (en) * | 2016-08-25 | 2017-04-19 | 亿和精密工业（苏州）有限公司 | Plastic mould structure |
| CN207695477U (en) * | 2017-12-27 | 2018-08-07 | 震旦（中国）有限公司 | A kind of bending cutter group being used to form closed circular edge |
-
2017
- 2017-12-27 CN CN201711447777.2A patent/CN109967615B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10216839A (en) * | 1997-02-05 | 1998-08-18 | Nakajima Kokan Kk | Forming press device for producing square steel tube |
| CN2766992Y (en) * | 2005-02-02 | 2006-03-29 | 马鞍山市联盟模具机械工业有限公司 | Impress-free mold |
| CN1966171A (en) * | 2005-11-15 | 2007-05-23 | 小松产机株式会社 | Die for trigger bending machine and method for manufacturing the same |
| CN102672051A (en) * | 2012-05-30 | 2012-09-19 | 苏州旭创精密模具有限公司 | Die for bending switch butterfly elastic piece |
| CN203526335U (en) * | 2013-09-11 | 2014-04-09 | 唐道雁 | Upper knife of bending machine |
| CN103878246A (en) * | 2014-04-08 | 2014-06-25 | 安徽新源精密模具有限公司 | Bending machine die for nine-bend workpiece and machining method of nine-bend workpiece |
| CN104624810A (en) * | 2015-02-12 | 2015-05-20 | 航天科工哈尔滨风华有限公司 | Bending die and bending method of pentagonal cabinet shell |
| CN204486599U (en) * | 2015-03-04 | 2015-07-22 | 广州海格机械有限公司 | A kind of Bending Mould of enclosed type sheet metal component |
| CN206104670U (en) * | 2016-08-25 | 2017-04-19 | 亿和精密工业（苏州）有限公司 | Plastic mould structure |
| CN207695477U (en) * | 2017-12-27 | 2018-08-07 | 震旦（中国）有限公司 | A kind of bending cutter group being used to form closed circular edge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109967615A (en) | 2019-07-05 |
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