CN217451610U - Upper and lower track stretch bender - Google Patents
Upper and lower track stretch bender Download PDFInfo
- Publication number
- CN217451610U CN217451610U CN202220571758.0U CN202220571758U CN217451610U CN 217451610 U CN217451610 U CN 217451610U CN 202220571758 U CN202220571758 U CN 202220571758U CN 217451610 U CN217451610 U CN 217451610U
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- China
- Prior art keywords
- stretch
- section bar
- stretch bending
- clamping electrode
- oil cylinder
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- 238000005452 bending Methods 0.000 claims abstract description 75
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000003462 Bender reaction Methods 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The utility model discloses an upper and lower track stretch bender, which comprises a frame, a stretch bending die and two groups of stretch bending mechanisms with the same structure, wherein the two groups of stretch bending mechanisms are symmetrically arranged at two ends of the frame and are rotationally connected with the frame; the stretch bending die is fixedly arranged on the rack through a die fixing assembly; the section heating system comprises a transformer, a positive clamping electrode and a negative clamping electrode, and two output terminals of the transformer are electrically connected with the positive clamping electrode and the negative clamping electrode respectively; the positive clamping electrode and the negative clamping electrode are symmetrically clamped at two ends of the section bar. The utility model discloses a set up section bar heating system simultaneously on the stretch bender, can heat the section bar and carry out stretch bending after the predetermined temperature and take shape to make the section bar keep at predetermined stretch bending take shape temperature in the stretch bending take shape process, make the plasticity of section bar improve, deformation resistance reduce, kick-back reduce, shortened production cycle, improved production efficiency; the bending machine can be used for bending various section bar sections, and the bent arc has high precision and good stability.
Description
Technical Field
The utility model belongs to the technical field of the stretch bender, concretely relates to upper and lower track stretch bender.
Background
In actual installation and use of the hangar door, in order to facilitate butt joint of the rails, the rails need to be bent into certain arcs through a stretch bender. The principle of stretch bending is to apply tangential tension to the profile, and to bend the profile by changing the position of the internal neutral layer. The stretch bending process comprises normal-temperature stretch bending forming and hot stretch bending forming, and the normal-temperature stretch bending forming process aims at the defects of resilience, wrinkling, outer layer cracking and the like of materials which are difficult to form at normal temperature. In the traditional hot stretch-bending forming process, heating and stretch-bending processes are carried out on different mechanical equipment in sequence, repeated heating needs to be carried out for many times so as to form the section to a target arc shape, the production period is long, the working time cost is high, the resilience is large, and in addition, the existence of residual stress can also cause deformation in the subsequent cutting process to influence the precision of the final part.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects of the prior art and providing an upper and lower track stretch bender.
The utility model discloses a through following technical scheme implement:
the upper and lower track stretch bender comprises a frame, a stretch bending die 1 and two groups of stretch bending mechanisms 17 with the same structure, wherein the two groups of stretch bending mechanisms 17 are symmetrically arranged at two ends of the frame and are rotationally connected with the frame; the stretch bending die 1 is fixedly arranged on the rack through a die fixing component 2; the section heating system comprises a transformer 3, a positive clamping electrode 4 and a negative clamping electrode 5, wherein two output terminals of the transformer 3 are respectively and electrically connected with the positive clamping electrode 4 and the negative clamping electrode 5; the positive clamping electrode 4 and the negative clamping electrode 5 are symmetrically clamped at two ends of the sectional material 23. The positive clamping electrode 4 and the negative clamping electrode 5 are respectively clamped at two ends of the section bar 23, and the section bar 23 can be heated to a preset temperature by connecting the transformer 3 and a lead to form a closed loop by utilizing the characteristic of large resistivity of the section bar 23 and electrifying. The two ends of the section bar 23 can be clamped by the stretch bending mechanisms 17, and the section bar 23 is stretch bent to be attached to the outer side surface of the stretch bending template through the opposite rotating motion of the two stretch bending mechanisms 17 so as to form the bending radian identical to that of the stretch bending template.
Optionally, the section heating system further includes a temperature sensor and a controller, and the temperature sensor and the transformer 3 are electrically connected to the controller. The temperature sensor is used for measuring the temperature of the section bar 23 in real time and transmitting a signal to the controller, and the controller adjusts the current of the transformer 3 so as to control the heating temperature of the section bar 23.
Optionally, the rack comprises a workbench 6 and a fixed frame 7, and the fixed frame 7 is horizontally arranged in the middle of one side of the workbench 6; the stretch bending mechanism 17 comprises a rotating arm 8, a stretching oil cylinder 9, a sliding table 10, a clamping oil cylinder 11 and a clamp 12 which are horizontally arranged; the extending end of the stretching oil cylinder 9 is hinged with the rotating arm 8, and the other end of the stretching oil cylinder is hinged with one end of the fixed frame 7, which is far away from the workbench 6; the sliding table 10 is arranged on the rotating arm 8 in a sliding mode, the clamping oil cylinder 11 is arranged on the sliding table 10, and the extending end of the clamping oil cylinder 11 is fixedly connected with the clamp 12. Before stretch bending, the distance between the two clamps 12 is adjusted through the sliding tables 10 on the two sides, so that sectional bar products with different lengths can be clamped conveniently. In operation, the clamping cylinder 11 pushes the clamp 12 to clamp the section bar 23 to be bent; the extending end of the stretching oil cylinder 9 contracts to drive the rotating arms 8 at two sides to rotate oppositely, thereby completing the bending operation of the section bar 23.
Optionally, one end of the rotating arm 8 is provided with a shaft sleeve 13, the shaft sleeve 13 is sleeved with a rotating shaft 14, and the rotating shaft 14 is rotatably arranged on the workbench 6 through a bearing seat. Through the arrangement of the shaft sleeve 13 and the rotating shaft 14, the rotating arms 8 can be rotatably arranged at two ends of the workbench 6, so that the stretch bending work on the section bar 23 is facilitated.
Optionally, one side of slip table 10 still is provided with vertical balladeur train 15, vertical balladeur train 15 on sliding connection have an oil cylinder mount pad 16, oil cylinder mount pad 16 in be provided with the tight hydro-cylinder 11 of clamp, the below of oil cylinder mount pad 16 is provided with lift cylinder 18, lift cylinder 18 stretch out the end vertically upwards, and with the bottom fixed connection of oil cylinder mount pad 16. The clamping cylinder 11 can be moved up or down together with the jig 12 by moving the cylinder mount 16 up or down by the lift cylinder 18, which facilitates the height adjustment of the jig 12. When the two ends of the section bar 23 need to be clamped by the clamp 12, the clamp 12 can be appropriately moved upwards by the lifting oil cylinder 18 so as to load the two ends of the section bar 23 into the clamp 12; after the section bar 23 is installed, the clamp 12 is moved downwards through the lifting oil cylinder 18, so that the bottom of the section bar 23 is flush with the bottom of the die, and the subsequent stretch bending work is facilitated.
Optionally, one side fixedly connected with sliding block 19 of slip table 10, sliding block 19 in the horizontal flat open be equipped with the internal thread hole, the internal thread hole on threaded connection have lead screw 20, the one end of lead screw 20 is connected with rotating electrical machines 21, rotating electrical machines 21 pass through motor cabinet 22 and fix one side of rocking arm 8.
Optionally, the upper surface of the workbench 6 and the outer surface of the stretch bending die 1 are both provided with insulating and heat insulating cushion layers. The insulating and heat-insulating cushion layer plays an insulating role in the current generated by the section heating system and plays a heat-insulating role in the heat generated by the section heating system.
When in use: (1) fixing a stretch bending die 1 on a workbench 6 through a die fixing component 2; (2) clamping two ends of the section bar 23 through a clamp 12, and pushing the middle part of the inner surface of the section bar 23 to the top of the outer surface of the stretch bending mould 1; (3) respectively clamping a positive clamping electrode 4 and a negative clamping electrode 5 at two ends of a section bar 23, forming a closed loop through a transformer 3 and a lead, and electrifying and heating to a preset forming temperature; (4) the extending end of the stretching oil cylinder 9 contracts to drive the rotating arms 8 at the two sides and the clamp 12 to rotate oppositely, and the clamp 12 clamps the two ends of the section bar 23 to rotate so as to stretch and bend the section bar to be attached to the outer surface of the stretch bending mould 1; simultaneously maintaining the temperature of the profile 23 at a predetermined stretch-bend forming temperature by means of a profile heating system; (5) adjusting the temperature of the section bar 23 to a creep temperature value through a section bar heating system, keeping the section bar 23 attached to the stretch bending die 1 for a certain time, performing a creep process, and simultaneously controlling the temperature; (6) and after the bending is finished, cutting off the power supply, and taking out the section 23 after the section is cooled.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a set up section bar heating system simultaneously on the stretch bender, can heat the section bar and carry out stretch bending after the predetermined temperature and take shape, and make the section bar keep at predetermined stretch bending take shape temperature in the stretch bending take shape process, make the plasticity of section bar improve, deformation resistance reduces, resilience reduces, the quality problems such as resilience, wrinkling and outer layer rupture that difficult shaping material meets in traditional normal atmospheric temperature stretch bending take shape under the normal atmospheric temperature have been solved well, the problem that needs the repeated heating in the traditional hot stretch bending take shape technology has also been avoided, the production cycle is shortened, the production efficiency is improved; the bending machine can be used for bending various section bar sections, and the bent arc has high precision and good stability.
Drawings
Fig. 1 is a plan view of the stretch bender in an initial state;
fig. 2 is a top view of the stretch bender after stretch bending and forming the section;
fig. 3 is a side view of the rotating arm of the present invention.
In the figure: 1. the bending die comprises a stretch bending die, 2. a die fixing assembly, 3. a transformer, 4. a positive clamping electrode, 5. a negative clamping electrode, 6. a workbench, 7. a fixing frame, 8. a rotating arm, 9. a stretching oil cylinder, 10. a sliding table, 11. a clamping oil cylinder, 12. a clamp, 13. a shaft sleeve, 14. a rotating shaft, 15. a vertical sliding frame, 16. an oil cylinder mounting seat, 17. a stretch bending mechanism, 18. a lifting oil cylinder, 19. a sliding block, 20. a screw rod, 21. a rotating motor, 22. a motor seat and 23. a section bar.
Detailed Description
The invention is further illustrated by the following figures and examples, without however restricting the scope of the invention to these examples.
Example 1
As shown in fig. 1-3, the upper and lower rail bending machine comprises a frame, a bending die 1 and two groups of bending mechanisms 17 with the same structure, wherein the two groups of bending mechanisms 17 are symmetrically arranged at two ends of the frame and are rotatably connected with the frame; the stretch bending die 1 is fixedly arranged on the rack through a die fixing component 2; the section heating system comprises a transformer 3, a positive clamping electrode 4 and a negative clamping electrode 5, wherein two output terminals of the transformer 3 are respectively and electrically connected with the positive clamping electrode 4 and the negative clamping electrode 5; the positive clamping electrode 4 and the negative clamping electrode 5 are symmetrically clamped at two ends of the section bar 23. The positive clamping electrode 4 and the negative clamping electrode 5 are respectively clamped at two ends of the section 23, a closed loop is formed by connecting the transformer 3 and a lead by utilizing the characteristic of large resistivity of the section 23, and the section 23 can be heated to a preset temperature by electrifying. The two ends of the section bar 23 can be clamped by the stretch bending mechanisms 17, and the section bar 23 is stretch bent to be attached to the outer side surface of the stretch bending template through the opposite rotating motion of the two stretch bending mechanisms 17 so as to form the bending radian identical to that of the stretch bending template.
Wherein, section bar heating system still includes temperature sensor and controller, and temperature sensor, transformer 3 all are connected with controller electric. The temperature sensor is used for measuring the temperature of the section bar 23 in real time and transmitting a signal to the controller, and the controller adjusts the current of the transformer 3 so as to control the heating temperature of the section bar 23.
The machine frame comprises a workbench 6 and a fixed frame 7, wherein the fixed frame 7 is horizontally arranged in the middle of one side of the workbench 6; the stretch bending mechanism 17 comprises a rotating arm 8, a stretching oil cylinder 9, a sliding table 10, a clamping oil cylinder 11 and a clamp 12 which are horizontally arranged; the extending end of the stretching oil cylinder 9 is hinged with the rotating arm 8, and the other end of the stretching oil cylinder is hinged with one end of the fixed frame 7 far away from the workbench 6; the sliding table 10 is arranged on the rotating arm 8 in a sliding mode, a clamping oil cylinder 11 is arranged on the sliding table 10, and the extending end of the clamping oil cylinder 11 is fixedly connected with a clamp 12. Before stretch bending, the distance between the two clamps 12 is adjusted through the sliding tables 10 on the two sides, so that sectional bar products with different lengths can be clamped conveniently. The clamp 12 is of a hollow square structure, a vertical clamping plate is respectively arranged on two sides in the clamp 12, threaded holes are horizontally formed in two side walls of the clamp 12, a horizontal screw rod is connected with the threaded holes in a threaded mode, and the bottom end of the screw rod abuts against the clamping plate. When the bending clamp works, the clamping oil cylinder 11 pushes the clamp 12 to enable the end part of the section bar 23 to be arranged between two clamping plates in the clamp, and then the screw rods on the two sides of the clamp are screwed to further shorten the distance between the two clamping plates so as to clamp the section bar 23 to be bent; then the extending end of the stretching oil cylinder 9 contracts to drive the rotating arms 8 at the two sides to rotate oppositely, thereby completing the bending operation of the section bar 23.
As shown in fig. 3, a shaft sleeve 13 is disposed at one end of the rotating arm 8, a rotating shaft 14 is sleeved on the shaft sleeve 13, and the rotating shaft 14 is rotatably disposed on the workbench 6 through a bearing seat. Through the arrangement of the shaft sleeve 13 and the rotating shaft 14, the rotating arms 8 can be rotatably arranged at two ends of the workbench 6, so that the stretch bending work of the section 23 is facilitated.
As shown in fig. 3, a vertical sliding frame 15 is further disposed on one side of the sliding table 10, an oil cylinder mounting seat 16 is slidably connected to the vertical sliding frame 15, a clamping oil cylinder 11 is disposed in the oil cylinder mounting seat 16, a lifting oil cylinder 18 is disposed below the oil cylinder mounting seat 16, and an extending end of the lifting oil cylinder 18 is vertically upward and fixedly connected to the bottom of the oil cylinder mounting seat 16. The clamping cylinder 11 can be moved up or down together with the jig 12 by moving the cylinder mount 16 up or down by the lift cylinder 18, which facilitates the height adjustment of the jig 12. When the two ends of the section bar 23 need to be clamped by the clamp 12, the clamp 12 can be appropriately moved upwards by the lifting oil cylinder 18 so as to load the two ends of the section bar 23 into the clamp 12; after the section bar 23 is installed, the clamp 12 is moved downwards through the lifting oil cylinder 18, so that the bottom of the section bar 23 is flush with the bottom of the die, and the subsequent stretch bending work is facilitated.
As shown in fig. 1 and 2, a sliding block 19 is fixedly connected to one side of the sliding table 10, an internal threaded hole is horizontally formed in the sliding block 19, a lead screw 20 is threadedly connected to the internal threaded hole, a rotating motor 21 is connected to one end of the lead screw 20, and the rotating motor 21 is fixed to one side of the rotating arm 8 through a motor base 22. The screw rod 20 can be driven to rotate forwards or backwards through the forward or reverse rotation of the rotating motor 21, so that the sliding block 19 together with the sliding table 10 is driven to be close to or far away from the workbench 6, and the distance between the two clamps 12 is adjusted.
Wherein, the upper surface of workstation 6 and stretch bending die 1's surface all are provided with insulating adiabatic bed course, and insulating adiabatic bed course plays insulating effect to the electric current that section bar heating system produced, plays heat insulating effect to the heat that section bar heating system produced.
When in use: (1) fixing a stretch bending die 1 on a workbench 6 through a die fixing component 2; (2) clamping two ends of the section bar 23 through a clamp 12, and propping the middle part of the inner surface of the section bar 23 to the top of the outer surface of the stretch bending mould 1; (3) respectively clamping a positive clamping electrode 4 and a negative clamping electrode 5 at two ends of a section bar 23, forming a closed loop through a transformer 3 and a lead, and electrifying and heating to a preset forming temperature; (4) the extending end of the stretching oil cylinder 9 contracts to drive the rotating arms 8 at the two sides and the clamp 12 to rotate oppositely, and the clamp 12 clamps the two ends of the section bar 23 to rotate so as to stretch and bend the section bar to be attached to the outer surface of the stretch bending mould 1; simultaneously maintaining the temperature of the profile 23 at a predetermined stretch-bend forming temperature by means of a profile heating system; (5) adjusting the temperature of the section bar 23 to a creep temperature value through a section bar heating system, keeping the section bar 23 attached to the stretch bending die 1 for a certain time, performing a creep process, and simultaneously controlling the temperature; through the creep property of the material, the rebound can be reduced, and the accurate forming is realized; (6) and after the bending is finished, cutting off the power supply, and taking out the section 23 after the section is cooled.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (7)
1. Upper and lower track stretch benders, including frame, stretch bending mould (1) and two sets of stretch bending mechanisms (17) that the structure is the same, its characterized in that: the two groups of stretch bending mechanisms (17) are symmetrically arranged at two ends of the rack and are rotationally connected with the rack; the stretch bending die (1) is fixedly arranged on the rack through a die fixing component (2); the section heating system comprises a transformer (3), a positive clamping electrode (4) and a negative clamping electrode (5), wherein two output terminals of the transformer (3) are electrically connected with the positive clamping electrode (4) and the negative clamping electrode (5) respectively; the positive clamping electrode (4) and the negative clamping electrode (5) are symmetrically clamped at two ends of the section bar (23).
2. The upper and lower track stretch benders according to claim 1, wherein: the section heating system further comprises a temperature sensor and a controller, and the temperature sensor and the transformer (3) are electrically connected with the controller.
3. The upper and lower track stretch benders according to claim 1, wherein: the rack comprises a workbench (6) and a fixed frame (7), wherein the fixed frame (7) is horizontally arranged in the middle of one side of the workbench (6); the stretch bending mechanism (17) comprises a rotating arm (8), a stretching oil cylinder (9), a sliding table (10), a clamping oil cylinder (11) and a clamp (12) which are horizontally arranged; the extending end of the stretching oil cylinder (9) is hinged with the rotating arm (8), and the other end of the stretching oil cylinder is hinged with one end, far away from the workbench (6), of the fixed frame (7); the sliding table (10) is arranged on the rotating arm (8) in a sliding mode, the clamping oil cylinder (11) is arranged on the sliding table (10), and the extending end of the clamping oil cylinder (11) is fixedly connected with the clamp (12).
4. The upper and lower track bender according to claim 3, wherein: one end of the rotating arm (8) is provided with a shaft sleeve component (13), the shaft sleeve component (13) is sleeved with a rotating shaft (14), and the rotating shaft (14) is rotatably arranged on the workbench (6) through a bearing seat.
5. The upper and lower track stretch benders according to claim 3, wherein: one side of slip table (10) still is provided with vertical balladeur train (15), vertical balladeur train (15) on sliding connection have hydro-cylinder mount pad (16), hydro-cylinder mount pad (16) in be provided with press from both sides tight hydro-cylinder (11), the below of hydro-cylinder mount pad (16) is provided with lift cylinder (18), the end that stretches out of lift cylinder (18) is vertical upwards, and with the bottom fixed connection of hydro-cylinder mount pad (16).
6. The upper and lower track bender according to claim 3, wherein: one side fixedly connected with sliding block (19) of slip table (10), sliding block (19) in the horizontal flat open be equipped with the internal thread hole, the internal thread hole on threaded connection have lead screw (20), the one end of lead screw (20) is connected with rotating electrical machines (21), rotating electrical machines (21) fix through motor cabinet (22) one side of rocking arm (8).
7. The upper and lower track bender according to claim 3, wherein: and insulating and heat-insulating cushion layers are arranged on the upper surface of the workbench (6) and the outer surface of the stretch bending die (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220571758.0U CN217451610U (en) | 2022-03-16 | 2022-03-16 | Upper and lower track stretch bender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220571758.0U CN217451610U (en) | 2022-03-16 | 2022-03-16 | Upper and lower track stretch bender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217451610U true CN217451610U (en) | 2022-09-20 |
Family
ID=83266327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220571758.0U Expired - Fee Related CN217451610U (en) | 2022-03-16 | 2022-03-16 | Upper and lower track stretch bender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217451610U (en) |
-
2022
- 2022-03-16 CN CN202220571758.0U patent/CN217451610U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220920 |
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| CF01 | Termination of patent right due to non-payment of annual fee |