CN112718975A - U-shaped round pipe bending die - Google Patents
U-shaped round pipe bending die Download PDFInfo
- Publication number
- CN112718975A CN112718975A CN202011503562.XA CN202011503562A CN112718975A CN 112718975 A CN112718975 A CN 112718975A CN 202011503562 A CN202011503562 A CN 202011503562A CN 112718975 A CN112718975 A CN 112718975A
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- China
- Prior art keywords
- die
- upper cover
- shaped
- lower bottom
- movable block
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Classifications
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- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
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- 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
- B21D37/01—Selection of materials
-
- 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
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- 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
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a U-shaped circular tube bending die which comprises an upper cover die, a lower bottom die, a limiting device and a guide post device, wherein concave arcs which correspond to each other are arranged on the upper cover die and the lower bottom die, the upper cover die covers the lower bottom die, and guiding and positioning are carried out through the guide post device, so that the concave arcs on the upper cover die and the lower bottom die are mutually buckled to form a cylinder for limiting the circular tube, the limiting device is telescopically sleeved on a fixed rod extending outwards from the lower bottom die, U-shaped grooves are arranged at two ends of the concave arc on the lower bottom die, and a movable block device with a rotating function is arranged in each U-shaped groove; the upper cover die and the lower bottom die are provided with the concave arcs, the upper cover die and the lower bottom die are moved and guided by the guide pillar device, the concave arcs are mutually buckled to form a cylinder for limiting the circular tube, and the movable block device is matched to assist in supporting the circular tube on the outer side of the cylinder, so that pits are effectively avoided on the surface of the circular tube.
Description
The technical field is as follows:
the invention relates to automobile parts, in particular to a U-shaped round pipe bending die.
Background art:
the U-shaped round pipe is one of the most critical parts on the truck aluminum alloy bumper and plays a decisive role in the overall appearance shape and the use function of the bumper, so that the processed U-shaped pipe is very important. However, the aluminum profile is easy to deform, distort, scratch, pit and other common defects during processing, so that the precision of the parts is difficult to guarantee.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: overcome prior art's not enough, through set up the concave arc on upper cover mould and lower die block to realize the removal direction of upper cover mould bottom block down through the guide pillar device, make the mutual lock of concave arc form and carry out spacing drum to the pipe, and the cooperation movable block device carries out the auxiliary stay to the pipe in the drum outside, has effectively avoided the U-shaped pipe bending die of pit to appear in the pipe surface.
The technical scheme of the invention is as follows: the utility model provides a U-shaped pipe bending die, includes upper cover mould, lower die block, stop device and guide pillar device, characterized by: the upper cover die and the lower die block are provided with concave arcs corresponding to each other, the upper cover die covers the lower die block and is guided and positioned by the guide pillar devices, so that the upper cover die and the concave arcs on the lower die block are mutually buckled to form a cylinder limiting the circular tube, the limiting device is sleeved on a fixing rod extending outwards of the lower die block in a telescopic mode, two ends of the concave arcs on the lower die block are provided with U-shaped grooves, and movable block devices with rotating functions are arranged in the U-shaped grooves.
Furthermore, the movable block device comprises a front movable block device and a rear movable block device which are embedded into the clamping groove in the U-shaped groove through a rotating shaft.
Further, arc-shaped grooves corresponding to the concave arcs are formed in the front movable block device and the rear movable block device.
Furthermore, the fixing rod is a square tube, the limiting device is of an L-shaped structure, and one end of the limiting device is inserted into the fixing rod and is fixed through a bolt.
Furthermore, the fixing rod and the limiting device are provided with at least two screw holes for the bolts to penetrate through.
Furthermore, the guide post device comprises a guide block and a guide groove, the guide block is arranged on the upper cover die, and the guide groove is arranged on the lower bottom die.
The invention has the beneficial effects that:
1. the upper cover die and the lower bottom die are provided with the concave arcs, the upper cover die and the lower bottom die are moved and guided by the guide pillar device, the concave arcs are mutually buckled to form a cylinder for limiting the circular tube, and the movable block device is matched to assist in supporting the circular tube on the outer side of the cylinder, so that pits are effectively avoided on the surface of the circular tube.
2. The upper cover die and the lower bottom die are made of stamping die steel with good performance, the strength and the toughness are good, the deformation is small, concave arcs of the upper cover die and the lower bottom die are machined and formed through a numerical control machining center, and good matching degree and machining precision of the upper die and the lower die are guaranteed.
3. The front and rear movable block devices are rotatably embedded into the clamping grooves in the U-shaped groove through the rotating shaft, when the upper cover die is pressed downwards, the front and rear movable block devices can support a circular tube arranged in a concave arc, and the support angles of the front and rear movable block devices can be changed in the process of pressing the upper cover die downwards due to the rotation of the front and rear movable block devices, so that pits are prevented from appearing on the surface of the circular tube.
4. The limiting device is used for positioning the bending position of the U-shaped pipe, so that the bending consistency of parts after stamping is ensured, meanwhile, the limiting device is inserted into the fixed rod and is fixed through the bolt, the distance of the limiting device on the fixed rod can be adjusted due to the fact that at least two screw holes are formed in the fixed rod, and the fixed rod and the limiting device are both square pipes and are prevented from rotating to cause limiting failure.
5. The guide post device comprises a guide block and a guide groove, wherein when the upper cover die moves downwards, the guide block moves in the guide groove to guide the upper cover die to move up and down along the guide post and to be involuted with the lower bottom die at a correct position, so that the upper cover die and the lower bottom die are mutually buckled to form a cylinder for limiting the circular tube.
Description of the drawings:
fig. 1 is a structural schematic diagram of a U-shaped round tube bending die.
Fig. 2 is a structural schematic diagram of a U-shaped round tube bending die.
Fig. 3 is a schematic structural view of the U-shaped round pipe bending die in use.
The specific implementation mode is as follows:
example (b): referring to fig. 1, 2 and 3, in the drawings, 1-an upper cover mold, 2-a lower bottom mold, 3-a concave arc, 4-a limiting device, 5-a fixed rod, 6-a U-shaped groove, 7-a front movable block device, 8-a rear movable block device, 9-a rotating shaft, 10-a clamping groove, 11-an arc-shaped groove, 12-a screw hole, 13-a guide block, 14-a guide groove and A-a circular tube.
The U-shaped circular tube bending die comprises an upper cover die, a lower bottom die, a limiting device and a guide post device, wherein concave arcs which correspond to each other are arranged on the upper cover die and the lower bottom die, the upper cover die covers the lower bottom die and is guided and positioned by the guide post device, so that the concave arcs on the upper cover die and the concave arcs on the lower bottom die are mutually buckled to form a cylinder for limiting the circular tube, the limiting device is telescopically sleeved on a fixed rod extending outwards from the lower bottom die, U-shaped grooves are arranged at two ends of the concave arcs on the lower bottom die, and a movable block device with a rotating function is arranged in each U-shaped groove; through set up the concave arc on upper cover mould and lower die block to realize the removal direction of upper cover mould bottom block down through the guide pillar device, make the mutual lock of concave arc form and carry out spacing drum to the pipe, and cooperate the movable block device to carry out auxiliary stay to the pipe in the drum outside, effectively avoided the pit to appear in the pipe surface.
The present application will be described in detail below with reference to the drawings and examples.
The upper cover die 1 and the lower bottom die 2 are provided with concave arcs 3 corresponding to each other, the upper cover die 1 covers the lower bottom die 2 and is guided and positioned by the guide pillar device, so that the upper cover die 1 and the concave arcs 3 on the lower bottom die 2 are buckled with each other to form a cylinder for limiting the circular tube A, the limiting device 4 is telescopically sleeved on a fixing rod 5 extending outwards from the lower bottom die 2, two ends of the concave arcs 3 on the lower bottom die 2 are provided with U-shaped grooves 6, and the U-shaped grooves 6 are internally provided with movable block devices with rotating functions.
The movable block device comprises a front movable block device 7 and a rear movable block device 8 which are embedded into a clamping groove 10 on the U-shaped groove 6 through a rotating shaft 9.
The front movable block device 7 and the rear movable block device 8 are both provided with arc-shaped grooves 11 corresponding to the concave arcs 3.
The fixing rod 5 is a square tube, the limiting device 4 is of an L-shaped structure, and one end of the limiting device is inserted into the fixing rod 5 and fixed through a bolt.
The fixing rod 5 and the limiting device 4 are both provided with screw holes 12 for bolts to penetrate through, and the number of the screw holes 12 on the fixing rod 5 is at least two.
The guide post device comprises a guide block 13 and a guide groove 14, wherein the guide block 13 is arranged on the upper cover die 1, and the guide groove 14 is arranged on the lower bottom die 2.
When the device is used, a mould is placed on a 315t press by a travelling crane and a lower bottom mould 2 is fixed, an upper cover mould 1 of the mould is fixed on an upper moving surface of the press, an upper mould and a lower mould are debugged, front and rear moving block devices (7 and 8) and the lower bottom mould 2 are fixed, the position of a limiting device 4 is adjusted and fixed, a sample is tested, pressure is maintained for 1min, a round pipe A is taken out, the round pipe A is checked by a tool or a sample plate, and the sample is finished after the round pipe A is qualified.
Wherein, the middle of the front and the back movable block devices (7 and 8) is provided with a rotating shaft 9 which has the function of free rotation. Before stamping of the die, a U-shaped pipe workpiece (a circular pipe A) is placed on the lower bottom die 2 to be positioned, and the front and rear movable block devices (7 and 8) are rotated to be in a horizontal state and tightly attached to the radian of the circular pipe of the workpiece; the upper cover die 1 starts to run downwards firstly, and when the workpiece is stressed and bent, the front and rear movable block devices (7 and 8) also rotate along with the workpiece, so that the reaction force of the lower bottom die 2 on the circular tube A is effectively avoided, and pits are prevented from appearing on the surface of the circular tube A; if the front and rear movable block devices (7 and 8) are cancelled, the upper cover die 1 exerts downward acting force on the circular tube A, and the arcs at the two ends of the lower bottom die 2 exert upward reaction force on the workpiece, so that four pits with different degrees appear on the front and rear surfaces of the circular tube A, and the product precision and the attractiveness are affected.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a U-shaped pipe bending die, includes upper cover mould, lower die block, stop device and guide pillar device, characterized by: the upper cover die and the lower die block are provided with concave arcs corresponding to each other, the upper cover die covers the lower die block and is guided and positioned by the guide pillar devices, so that the upper cover die and the concave arcs on the lower die block are mutually buckled to form a cylinder limiting the circular tube, the limiting device is sleeved on a fixing rod extending outwards of the lower die block in a telescopic mode, two ends of the concave arcs on the lower die block are provided with U-shaped grooves, and movable block devices with rotating functions are arranged in the U-shaped grooves.
2. The U-shaped round tube bending die as claimed in claim 1, wherein: the movable block device comprises a front movable block device and a rear movable block device which are embedded into the clamping groove in the U-shaped groove through a rotating shaft.
3. The U-shaped round tube bending die of claim 2, wherein: arc-shaped grooves corresponding to the concave arcs are formed in the front movable block device and the rear movable block device.
4. The U-shaped round tube bending die as claimed in claim 1, wherein: the fixing rod is a square tube, the limiting device is of an L-shaped structure, and one end of the limiting device is inserted into the fixing rod and is fixed through a bolt.
5. The U-shaped round tube bending die of claim 4, wherein: the fixing rod and the limiting device are both provided with screw holes for the bolts to penetrate through, and the number of the screw holes is at least two.
6. The U-shaped round tube bending die as claimed in claim 1, wherein: the guide post device comprises a guide block and a guide groove, the guide block is arranged on the upper cover die, and the guide groove is arranged on the lower bottom die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011503562.XA CN112718975B (en) | 2020-12-17 | 2020-12-17 | U-shaped round pipe bending die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011503562.XA CN112718975B (en) | 2020-12-17 | 2020-12-17 | U-shaped round pipe bending die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112718975A true CN112718975A (en) | 2021-04-30 |
| CN112718975B CN112718975B (en) | 2021-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011503562.XA Active CN112718975B (en) | 2020-12-17 | 2020-12-17 | U-shaped round pipe bending die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112718975B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115570024A (en) * | 2022-10-12 | 2023-01-06 | 江苏舜龙管业科技有限公司 | Cold pressing forming die for producing seamless bent pipe |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58215224A (en) * | 1982-06-09 | 1983-12-14 | Aoyama Kinshiyou Kk | Bending device |
| GB2122521A (en) * | 1982-06-15 | 1984-01-18 | Newman Tonks Hardware Limited | Apparatus and method for bending rod or tube |
| JPS6046818A (en) * | 1983-08-24 | 1985-03-13 | Dai Ichi High Frequency Co Ltd | Device for inspecting size and shape of bend pipe, and executing marking-off and groove working to pipe end part of bend pipe concerned |
| CN102335696A (en) * | 2011-10-20 | 2012-02-01 | 中山市奥美森工业有限公司 | Combined locking device for U-shaped pipe |
| CN203862837U (en) * | 2014-05-13 | 2014-10-08 | 南通晋弘钢结构工程有限公司 | Stamping die for circular tube connector |
| CN205926801U (en) * | 2016-06-02 | 2017-02-08 | 常熟市创新模具有限公司 | Bent -pipe mould |
| CN106915044A (en) * | 2015-07-10 | 2017-07-04 | 乌鲁木齐九品芝麻信息科技有限公司 | A kind of duplex ejector half three-way pipe core pulling mechanism for bent tube and its application method |
| CN208019280U (en) * | 2018-03-28 | 2018-10-30 | 南京凯微机电科技有限公司 | Pressing mould for making U-shaped bend pipe |
| CN208195413U (en) * | 2018-03-15 | 2018-12-07 | 青岛鑫驿金属制品有限公司 | A kind of bend punching die of U-tube |
-
2020
- 2020-12-17 CN CN202011503562.XA patent/CN112718975B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58215224A (en) * | 1982-06-09 | 1983-12-14 | Aoyama Kinshiyou Kk | Bending device |
| GB2122521A (en) * | 1982-06-15 | 1984-01-18 | Newman Tonks Hardware Limited | Apparatus and method for bending rod or tube |
| JPS6046818A (en) * | 1983-08-24 | 1985-03-13 | Dai Ichi High Frequency Co Ltd | Device for inspecting size and shape of bend pipe, and executing marking-off and groove working to pipe end part of bend pipe concerned |
| CN102335696A (en) * | 2011-10-20 | 2012-02-01 | 中山市奥美森工业有限公司 | Combined locking device for U-shaped pipe |
| CN203862837U (en) * | 2014-05-13 | 2014-10-08 | 南通晋弘钢结构工程有限公司 | Stamping die for circular tube connector |
| CN106915044A (en) * | 2015-07-10 | 2017-07-04 | 乌鲁木齐九品芝麻信息科技有限公司 | A kind of duplex ejector half three-way pipe core pulling mechanism for bent tube and its application method |
| CN205926801U (en) * | 2016-06-02 | 2017-02-08 | 常熟市创新模具有限公司 | Bent -pipe mould |
| CN208195413U (en) * | 2018-03-15 | 2018-12-07 | 青岛鑫驿金属制品有限公司 | A kind of bend punching die of U-tube |
| CN208019280U (en) * | 2018-03-28 | 2018-10-30 | 南京凯微机电科技有限公司 | Pressing mould for making U-shaped bend pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115570024A (en) * | 2022-10-12 | 2023-01-06 | 江苏舜龙管业科技有限公司 | Cold pressing forming die for producing seamless bent pipe |
| CN115570024B (en) * | 2022-10-12 | 2023-09-12 | 江苏舜龙管业科技有限公司 | Cold compression molding die for producing seamless bent pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112718975B (en) | 2021-10-15 |
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