CN107639873B - Press mobile platform system - Google Patents
Press mobile platform system Download PDFInfo
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- CN107639873B CN107639873B CN201710998531.8A CN201710998531A CN107639873B CN 107639873 B CN107639873 B CN 107639873B CN 201710998531 A CN201710998531 A CN 201710998531A CN 107639873 B CN107639873 B CN 107639873B
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- 230000007246 mechanism Effects 0.000 claims abstract description 103
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims description 19
- 238000000429 assembly Methods 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 238000003825 pressing Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Abstract
The invention relates to a press moving platform system, which comprises a press machine base, a moving workbench, a positioning mechanism, a locking mechanism and a moving machine base, wherein the moving workbench is arranged on the press machine base; the movable workbench is movably arranged above the press stand, an upper clamping groove penetrating through the movable workbench is formed in the upper surface of the movable workbench along the moving direction of the movable workbench, the upper clamping groove is used for installing a die, a lower clamping groove penetrating through the movable workbench is formed in the lower surface of the movable workbench along the moving direction of the movable workbench, and a positioning piece is arranged on the movable workbench and used for being matched with the positioning mechanism to center and position the movable workbench; the locking mechanism is matched with the lower clamping groove to lock the movable workbench on the press machine base, and an alignment mechanism for assisting in aligning the movable workbench is arranged on the press machine base; the movable machine seat is arranged at one side of the press machine seat along the moving direction of the movable workbench, and a chain conveying mechanism is arranged on the movable machine seat and drives the movable workbench to move back and forth on the press machine seat and the movable machine seat.
Description
Technical Field
The invention relates to the technical field of die machinery, in particular to a press moving platform system.
Background
When the mould pressing equipment is operated, the mould changing, the mould testing or the lower mould and the product are moved out of the machine through the moving plate, the lower mould and the moving plate return to the press for pressing and bear the pressing force and the mould opening force, and the process needs higher repetition precision. The YDT80 type mobile board (hereinafter referred to as "mobile board") is a mobile board system which is integrated with a machine and electricity and is operated by a programmable controller. The quick-forward, slow-forward, positioning, mold locking and other works in the mold changing process can be automatically completed.
With the development of market economy, the traditional mass production mode is not suitable for the market demand more and more for the production of punched products. Many varieties, small batches, and multiple batches have become fundamental requirements for most customers, and frequent die changes are unavoidable during the stamping process to meet this particular requirement. The locking of the working platform after die changing is also a big problem, and the instability of the working platform influences the follow-up working. Therefore, how to realize the fast and automatic accurate locking of the working platform after die change is also a big problem to be solved.
The Chinese patent with publication number of CN104985856A discloses a movable workbench positioning and locking device, which forms a closed frame through two transverse positioning blocks, one end positioning block and two movable positioning devices to resist horizontal thrust, and the movable positioning device is provided with a movable positioning device to realize movable positioning, but the movable positioning device and a lower beam are not well locked, so that under the influence of drawing force, the safety performance of the movable workbench positioning and locking device is also greatly hidden in hidden danger, and no automatic regulation and control process exists.
The Chinese patent with publication number CN102133763A discloses a lower die positioning and locking device of a refractory brick molding hydraulic press die, which comprises a T-shaped strip protruding on a lower die holder and extending along the end direction, a sinking and floating raceway capable of being driven up and down is positioned at the top of the T-shaped strip, a T-shaped groove connected with the T-shaped strip sliding sleeve is arranged at the corresponding part of the bottom of the lower die, and the bottom of the T-shaped strip is connected with a piston of an oil cylinder. The piston pulls down to drive the T-shaped strip to move downwards, so that the lower die is locked on the lower die holder after being tightly matched with the T-shaped groove. Although it provides a locking means, automated moving changing of the mold is not possible and is not well positioned.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a press moving platform system which is convenient for positioning and guiding the movement of a moving workbench after die changing and is convenient for positioning and locking the moving workbench after moving while realizing quick automatic and accurate positioning of the moving workbench.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the press moving platform system comprises a press machine base, a moving workbench, a positioning mechanism, a locking mechanism and a moving machine base; the movable workbench is movably arranged above the press machine base, an upper clamping groove penetrating through the front end and the rear end of the movable workbench is formed in the upper surface of the movable workbench along the moving direction of the movable workbench, the upper clamping groove is used for installing a die, a lower clamping groove penetrating through the front end and the rear end of the movable workbench is formed in the lower surface of the movable workbench along the moving direction of the movable workbench, and a positioning piece is arranged on the movable workbench and is used for centering and positioning the movable workbench in cooperation with the positioning mechanism; the locking mechanism is matched with the lower clamping groove to lock the movable workbench on the press machine base, and an alignment mechanism for assisting in aligning the movable workbench is arranged on the press machine base; the movable machine seat is arranged at the rear end of the press machine seat along the moving direction of the movable workbench, a chain conveying mechanism is arranged on the movable machine seat and drives the movable workbench to move back and forth on the press machine seat and the movable machine seat, and a guide mechanism which is matched with the lower clamping groove to guide the moving direction of the movable workbench is arranged on the movable machine seat.
The alignment mechanism is a plurality of guide wheels which are arranged on two sides of the movable workbench and are arranged along the moving direction of the movable workbench, and the guide wheels are arranged close to the movable workbench.
The guide mechanism comprises a guide rail arranged along the moving direction of the moving workbench, a plurality of guide heads are uniformly and fixedly connected to the guide rail, the guide heads are matched with the lower clamping grooves of the moving workbench in a rolling mode, and the guide heads are matched with the lower clamping grooves in a rolling mode.
The front end of the press machine seat along the moving direction of the moving workbench is provided with a travel switch and a limiting plate for preventing the moving workbench from falling out of the press machine seat, the travel switch is electrically connected with the controller, the moving workbench touches the travel switch, the travel switch sends a trigger signal to the controller, the controller controls the moving workbench to stop moving, and a damping sheet is fixedly arranged on the limiting plate.
The positioning mechanism is arranged in the press base and comprises a guide piece and a positioning driving device for driving the guide piece to move up and down, the positioning driving device can drive the guide piece to move up and extend into the positioning piece, an induction block is arranged at the bottom of the positioning mechanism, an upper positioning proximity switch and a lower positioning proximity switch are arranged on the side edge of the induction block, and the upper positioning proximity switch and the lower positioning proximity switch correspond to the upper limit and the lower limit of the movement of the guide piece respectively; the positioning driving device, the sensing block and the positioning proximity switch are respectively and electrically connected with the controller.
The locking mechanism is arranged inside the press base and comprises a pull rod assembly and a locking driving device for driving the pull rod assembly to move up and down, the head of the pull rod assembly is driven by a locking hydraulic device to press down the clamping groove to lock the movable workbench, a measuring device for accurately measuring the displacement distance of the pull rod assembly is arranged on the locking mechanism, and the measuring device is electrically connected with the controller.
The locking mechanisms are arranged in a plurality of groups and are respectively arranged at the front end and the rear end of the movable workbench along the moving direction of the movable workbench, each group of locking mechanism comprises two pull rod assemblies and a locking driving device, the two pull rod assemblies are arranged at intervals in parallel, a cross beam is horizontally arranged at the lower part of each of the two pull rod assemblies, the lower ends of the two pull rod assemblies are respectively and fixedly connected at the two ends of the cross beam, and the locking driving devices are fixed between the two pull rod assemblies to drive the two pull rod assemblies to move up and down synchronously.
The measuring device is a micropulse displacement sensor arranged at the lower side of one locking mechanism, a positioning magnetic block of the micropulse displacement sensor is arranged on the cross beam, and a measuring element of the micropulse displacement sensor is arranged at the lower side of the locking mechanism.
The middle position of the movable machine seat is provided with a plurality of supporting large wheels in a rolling way along the moving direction of the movable workbench, and the two side positions of the movable machine seat are provided with a plurality of supporting small wheels in a rolling way along the moving direction of the movable workbench.
The chain tension detection mechanism comprises a chain leaning wheel supported by a chain of the chain conveying mechanism, an inductor fixedly arranged on the mobile machine base and a cantilever plate arranged on the side edge of the mobile machine base; the near end of the cantilever plate is rotationally connected to the mobile machine base, the far end is suspended and positioned above the sensor when the chain is tensioned, the chain is rotationally connected between the near end and the far end of the cantilever plate, and the chain loosens to enable the far end of the cantilever plate to rotate downwards to trigger the sensor to alarm.
The invention has the following beneficial effects:
1. the auxiliary alignment and guide mechanisms are respectively arranged on the press stand and the movable stand, so that the quick automatic and accurate positioning of the movable workbench is realized, the movable positioning and guide of the movable workbench after die changing are facilitated, and the movable workbench is conveniently positioned and locked after movement.
2. The invention is provided with the controller, the travel switch and the proximity switch, and the like, and can better realize the automatic regulation and control of the mobile platform system.
3. The positioning mechanism is arranged and matched with the positioning piece at the lower part of the movable workbench, so that the positioning function can be well realized, and the positioning mechanism can be positioned at the diagonal line of the lower surface of the movable workbench, so that the centering positioning is realized, and the positioning mechanism can be more stable.
4. The locking mechanism is arranged and matched with the lower clamping groove of the movable workbench, so that the locking mechanism can better play a role in locking, the movable workbench can not influence the movement of the subsequent movable workbench after being reset, and the working efficiency is improved.
5. The invention is provided with the limiting plate, so that the movable workbench can be better prevented from being separated due to inertia, and the positioning and locking effects are better.
6. The invention can effectively ensure the precision of chain transmission, discover the problem of chain failure in time, realize full automation in the whole process of monitoring the chain failure, avoid extra operation of people and improve the automation degree of a mobile platform system.
7. The invention is provided with the aligning mechanism, so that the pull rod heads of the locking mechanism can be sleeved into the lower clamping grooves along the moving direction of the moving workbench and are not deviated, the movement is smoother, when the moving workbench is larger, the pull rod heads in the same moving direction are prevented from deviating, and when the pull rod heads are matched with the same lower clamping grooves, the resistance of the pull rod heads is increased, so that the movement and locking of the subsequent moving workbench are not influenced.
Drawings
FIG. 1 is a schematic top view of the overall structure of the present invention;
FIG. 2 is a schematic overall elevational view of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line C-C of FIG. 1;
FIG. 4 is a schematic elevational view of the mobile platen and press frame of the present invention;
FIG. 5 is a schematic top view of the mobile platen and press frame of the present invention;
FIG. 6 is an enlarged schematic view of the structure shown at I in FIG. 4;
FIG. 7 is an enlarged schematic view of the structure at II in FIG. 5;
FIG. 8 is a schematic elevational view of the positioning mechanism of the present invention;
FIG. 9 is a schematic elevational view of the locking mechanism of the present invention;
FIG. 10 is a schematic side view of the locking mechanism of the present invention;
FIG. 11 is a schematic top view of a mobile phone holder according to the present invention;
FIG. 12 is a schematic diagram of a front view of a mobile phone stand according to the present invention;
fig. 13 is a schematic structural view of the guide mechanism of the present invention.
Reference numerals illustrate:
1. a press stand; 11. a travel switch; 12. a limiting plate; 121. damping plate; 13. a guide wheel; 14. indicating a proximity switch; 2. a movable table; 21. an upper clamping groove; 22. a lower clamping groove; 23. a positioning piece; 231. a flanging bearing; 232. a lubricating sleeve; 3. a positioning mechanism; 31. a guide member; 311. a pin shaft; 312. an oilless bearing; 313. a pin sleeve; 32. a positioning drive device; 321. positioning a hydraulic cylinder; 322. positioning a piston; 323. a hydraulic rod is arranged; 324. a lower hydraulic rod; 33. an induction block; 34. positioning a proximity switch; 4. a locking mechanism; 41. a pull rod assembly; 411. a pull rod head; 412. a pull rod; 413. a shaft sleeve; 42. a locking drive; 421. locking a hydraulic cylinder; 422. locking the piston; 423. locking a hydraulic rod; 43. a cross beam; 44. a micropulse displacement sensor; 5. moving the machine base; 51. a connecting block; 52. a frame; 53. supporting a large wheel; 54. supporting the small wheel; 55. a guide mechanism; 551. a guide rail; 552. a guide head; 56. adjusting sizing blocks; 57. a chain conveying mechanism; 571. a driving wheel; 572. a chain; 573. a servo motor; 574. connecting an adjusting mechanism; 58. a chain tension detecting mechanism; 581. a chain leaning wheel; 582. an inductor; 583. cantilever plate.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and specific examples:
referring to fig. 1 to 3, the press moving platform system includes a press housing 1, a moving table 2, a positioning mechanism 3, a locking mechanism 4, and a moving housing 5;
referring to fig. 4 to 7, the movable table 2 is movably disposed above the press frame 1, and a strip-shaped upper clamping groove 21 penetrating through the front end and the rear end of the movable table 2 is disposed on the upper surface of the movable table 2 along the moving direction, and the upper clamping groove 21 is used for installing a mold; in this embodiment, the number of the upper clamping grooves 21 is plural, and the upper clamping grooves 21 are spaced apart and parallel to each other. The lower surface of the movable workbench 2 is provided with a strip-shaped lower clamping groove 22 penetrating through the front end and the rear end of the movable workbench 2 along the moving direction, and the lower clamping groove 22 is used for locking the movable workbench 2 on the press stand 1 in a matched manner with the locking mechanism 4; in this embodiment, the number of the lower clamping grooves 22 is plural, and the plurality of lower clamping grooves 22 are spaced apart and are parallel to each other. Preferably, the upper clamping groove 21 and the lower clamping groove 22 are both T-shaped through grooves.
The movable table 2 is provided with positioning members 23, in this embodiment, the movable table 2 is provided with two positioning members 23, and the two positioning members 23 are diagonally disposed on the lower surface of the movable table 2. In this embodiment, the lower surface of the movable table is provided with a positioning hole, the positioning piece 23 includes a flange bearing 231 and a lubrication sleeve 232 disposed in the positioning hole, and the lubrication sleeve 232 is disposed between the top end of the positioning hole and the flange bearing 231. The positioning piece 23 is used for centering and positioning the movable workbench 2 in cooperation with the positioning mechanism 3.
The front end of the press machine base 1 along the moving direction of the moving workbench 2 is provided with a travel switch 11 and a limiting plate 12, the travel switch 11 is electrically connected with a controller, the limiting plate 12 is used for preventing the moving workbench 2 from falling out due to inertia, preferably, the limiting plate 12 is fixedly provided with a damping sheet 121 for buffering the impact force of the moving workbench 2 crashing on the limiting plate 12.
The press frame 1 is provided with an alignment mechanism for assisting in aligning the moving direction of the moving table 2, in this embodiment, the alignment mechanism is a plurality of guide wheels 13 disposed on two sides of the moving table 2 and along the moving direction of the moving table 2, the guide wheels 13 are disposed close to the moving table 2, and the guide wheels 13 on two sides perform auxiliary alignment on the position of the moving table 2 when the moving table 2 moves back and forth.
The press machine base 1 is provided with an indication proximity switch 14 and a flashing lamp at the front end and the rear end of one side of the movable workbench 2 along the moving direction of the movable workbench 2, the indication proximity switch 14 and the flashing lamp are respectively and electrically connected with a controller, when the movable workbench 2 approaches the indication proximity switch 14, the indication proximity switch 14 sends a signal to the controller, and the controller receives the signal indicating the proximity switch 14 and controls the flashing of the flashing lamp.
Referring to fig. 3 and 8, the positioning mechanism 3 is disposed inside the press stand 1, the positioning mechanism 3 includes a guide member 31 and a positioning driving device 32 for driving the guide member 31 to move up and down, and the positioning driving device 32 can drive the guide member 31 to move up and extend into the positioning member 23, so as to realize accurate positioning of the movable table 2; in this embodiment, the guide member 31 is a pin shaft 311, the pin shaft 311 is sleeved in a pin sleeve 313 through an oilless bearing 312, the pin sleeve 313 is fixedly mounted on the inner top wall of the press stand 1, and the pin shaft 311 is slidably matched with the pin sleeve 313 through the oilless bearing 312. In this embodiment, the positioning driving device 32 is a positioning hydraulic device, the positioning hydraulic device includes a positioning hydraulic cylinder 321, the top and bottom of the positioning hydraulic cylinder 321 are respectively provided with an oil port, a sliding seal sleeve in the positioning hydraulic cylinder 321 is provided with a positioning piston 322, the upper and lower sides of the positioning piston 322 are respectively and fixedly connected with an upper hydraulic rod 323 and a lower hydraulic rod 324, the upper end of the upper hydraulic rod 323 penetrates out of the positioning hydraulic cylinder 321 and is fixedly connected with the lower end of the pin shaft 311, and the lower end of the lower hydraulic rod 324 penetrates out of the positioning hydraulic cylinder 321 and extends to the outside of the positioning hydraulic cylinder 321. The bottom of the lower hydraulic rod 324 is provided with an induction block 33, an upper positioning proximity switch 34 and a lower positioning proximity switch 34 are fixedly connected to the side edge of the induction block 33 on the bottom surface of the positioning hydraulic cylinder 321, and the upper positioning proximity switch 34 and the lower positioning proximity switch 34 respectively correspond to an upper limit and a lower limit of the movement of the pin shaft 311; the positioning hydraulic device, the sensing block 33 and the positioning proximity switch 34 are respectively and electrically connected with the controller.
Further, the number of the positioning mechanisms 3 is the same as that of the positioning members 23, and the positioning mechanisms 3 are arranged corresponding to the positions of the positioning members 23. In this embodiment, the number of the positioning mechanisms 3 is two, and the positioning mechanisms are diagonally arranged inside the press frame 1.
Referring to fig. 2, 3, 9 and 10, the locking mechanism 4 is disposed inside the press stand 1, the locking mechanism 4 includes a pull rod assembly 41 and a locking driving device 42 that drives the pull rod assembly 41 to move up and down, the pull rod assembly 41 includes a pull rod head 411 and a pull rod 412, the upper portion of the pull rod head 411 has a head portion that is adapted to the shape of the lower clamping groove 22 and can clamp the lower clamping groove 22, and in this embodiment, the head portion is T-shaped; the lower part of the pull rod head 411 is sleeved in a shaft sleeve 413, and the shaft sleeve 413 is fixedly arranged on the inner top wall of the press stand 1; the pull rod 412 is vertically disposed and fixedly connected to the lower end of the pull rod head 411. The locking driving device 42 is a locking hydraulic device, and the locking hydraulic device drives the pull rod 412 to move up and down, and the pull rod 412 pulls the pull rod head 411 to move up and down, so as to drive the head to press the lower clamping groove 22 to lock the movable workbench 2.
In this embodiment, the front end and the rear end of the moving table 2 along the moving direction thereof are respectively provided with four groups of locking mechanisms 4, each group of locking mechanisms 4 includes two pull rod assemblies 41 and a locking hydraulic device, the two pull rod assemblies 41 are arranged at intervals in parallel, a cross beam 43 is horizontally arranged at the lower part of the two pull rod assemblies 41, and the lower ends of the two pull rod assemblies 41 are respectively fixedly connected at two ends of the cross beam 43 through locking nuts. The locking hydraulic device is fixed between the two pull rod assemblies 41 to drive the two pull rod assemblies 41 to synchronously move up and down. Specifically, the locking hydraulic means includes the locking pneumatic cylinder 421 that is located crossbeam 43 top, the top and the lower part of locking pneumatic cylinder 421 are provided with the hydraulic fluid port respectively, the inside sliding seal of locking pneumatic cylinder 421 is provided with locking piston 422, and locking piston 422's downside fixedly connected with locking hydraulic stem 423, the bottom that locking hydraulic stem 423 was worn out to locking pneumatic cylinder 421 extends to the outside of locking pneumatic cylinder 421, locking hydraulic stem 423's lower extreme fixed connection is at the middle part of crossbeam 43. The locking hydraulic rod 423 moves up and down, so that the beam 43 drives the two pull rod assemblies 41 to move up and down synchronously.
The locking mechanism 4 is provided with a measuring device for accurately measuring the displacement distance of the pull rod assembly 41. In this embodiment, the measuring device is a micro-pulse displacement sensor 44 disposed at the lower side of one of the locking mechanisms 4, a positioning magnetic block of the micro-pulse displacement sensor 44 is mounted on the cross beam 43, and a measuring element of the micro-pulse displacement sensor 44 is disposed at the lower side of the locking mechanism 4. The locking hydraulic device drives the cross beam 43 to drive the pull rod assembly 41 to move up and down, the cross beam 43 drives the positioning magnetic block to move up and down, and the displacement distance of the cross beam 43 is accurately measured through the measuring element.
Referring to fig. 11 to 13, the moving housing 5 is provided at a rear end side of the press housing 1 in a moving direction of the moving table 2, and the moving housing 5 is connected to the press housing 1 through a connection block 51. The movable stand 5 comprises a stand 52, two large grooves are formed in the middle position of the upper portion of the stand 52 at intervals along the moving direction of the movable workbench 2, and a plurality of supporting large wheels 53 are arranged in the large grooves in a rolling mode. Two small grooves are formed in the two sides of the upper portion of the frame 52 along the moving direction of the moving table 2, and a plurality of small supporting wheels 54 are installed in the small grooves in a rolling mode. The guide mechanism 55 is installed on the frame 52 between the two large grooves, the guide mechanism 55 comprises a strip-shaped guide rail 551 which is arranged along the moving direction of the movable workbench 2, a plurality of guide heads 552 which are sleeved with ball bearings are uniformly and fixedly connected to the guide rail 551, the guide heads 552 are matched with the lower clamping grooves 22 of the movable workbench 2, and the guide heads 552 are matched with the lower clamping grooves 22 in a rolling mode. The lower end face of the stand 52 is provided with a plurality of adjusting sizing blocks 56, and the height of the stand 52 can be adjusted through the adjusting sizing blocks 56 so that the movable stand 5 and the press stand 1 are positioned on the same horizontal plane.
The two sides of the frame 52 are respectively provided with a chain conveying mechanism 57, the chain conveying mechanism 57 comprises a driving wheel 571 arranged at two ends of the frame 52 and a chain 572 sleeved on the driving wheel 571, the driving wheel 571 is driven to rotate by a servo motor 573, the servo motor 573 is electrically connected with a controller, the chain 572 is connected with the movable table 2 by a connection adjusting mechanism 574, and the servo motor 573 starts to drive the chain conveying mechanism 57 to work so as to pull the movable table 2 to move from the press machine base 1 to the movable machine base 5, so that a die is replaced or a pressed product is taken out.
Preferably, a chain tension detecting mechanism 58 is provided on the side of the frame 52. The chain tension detecting mechanism 58 comprises a chain leaning wheel 581 supported by a chain 572 and an inductor 582 fixedly arranged on the frame 52; the chain wheel 581 amplifies the vertical displacement information of the chain wheel 581 through a lever amplification mechanism, so that the chain wheel 581 triggers a sensor 582 to alarm through the lever amplification mechanism when the chain 572 is loosened. Specifically, the lever amplifying mechanism includes a cantilever plate 583 disposed at a side of the frame 52; the proximal end of the cantilever plate 583 is rotatably connected to the frame 52, and the distal end is suspended; the chain wheel 581 is rotatably connected between the proximal and distal ends of the cantilever plate 583; the slackening of the chain 572 causes the distal end of the cantilever plate 583 to rotate downward, thereby triggering the sensor 582 to alarm. The sensor 582 is a proximity switch that alarms through an alarm light.
Preferably, the chain wheel 581 is spaced horizontally from the distal end of the cantilever plate 583 more than from the proximal end of the cantilever plate 583. The chain wheel 581 is abutted downward against the upper end face of the chain 572 located below by gravity. The cantilever plate 583 is an obtuse triangle, and the chain wheel 581 is rotatably disposed at an obtuse angle of the cantilever plate 583. The cantilever plate 583 is provided with a plurality of openings for reducing weight.
Under normal conditions, the distal end of the cantilever plate 583 is positioned above the sensor 582 when the chain 572 is in tension. When the chain 572 is in a loose state, the downward rotation amount of the cantilever plate 583 is increased, the downward movement amount of the distal end of the cantilever plate 583 is amplified by the lever principle, the sensor 582 is triggered, and the sensor detects that the cantilever plate 583 automatically sends out an alarm signal prompt.
The accurate positioning method in the die changing process of the press moving platform system comprises the following steps:
step one: the movable workbench 2 moves to the press stand 1 to position and lock the die, and the method comprises the following substeps:
the servo motor 573 is started, the chain conveying mechanism 57 is driven to push the movable workbench 2 towards the direction of the press machine base 1, the lower clamping groove 22 on the lower surface of the movable workbench 2 is gradually sleeved on the head of the pull rod head 411, after the movable workbench 2 moves to the designated position of the press machine base 1, the travel switch 11 is touched, the travel switch 11 transmits a trigger signal to the controller, and the controller controls the servo motor 573 to stop working, so that the movable workbench 2 stops moving;
meanwhile, the controller controls the positioning hydraulic device of the positioning mechanism 3 to start working, and a positioning piston 322 in the positioning hydraulic device drives an upper hydraulic rod 323 to move upwards, so that a driving pin shaft 311 extends upwards, the upper end of the pin shaft 311 is propped into a positioning piece 23 on the lower surface of the movable workbench 2, and the accurate positioning of the movable workbench 2 is realized;
meanwhile, the positioning piston 322 drives the lower hydraulic rod 324 to move upwards, so that the sensing block 33 at the lower end of the lower hydraulic rod 324 is driven to move upwards to sense with the upper positioning proximity switch 34, and the upper positioning proximity switch 34 transmits a trigger signal to the controller;
the controller controls the locking hydraulic device of the locking mechanism 4 to start working, the locking hydraulic device drives the pull rod assembly 41 to move downwards, the head of the pull rod head 411 is driven to be clung to the lower clamping groove 22, the movable workbench 2 is locked on the press machine base 1, meanwhile, the micro-pulse displacement sensor 44 measures the downward moving distance of the pull rod assembly 41, when the downward moving distance reaches a preset value, the micro-pulse displacement sensor 44 sends a signal to the controller, and the controller controls the locking hydraulic device to stop working;
step two: the moving workbench 2 moves out of the press stand 1 to move onto the moving stand 5 to replace a die, comprising the following substeps:
when the pressing is finished and the die needs to be replaced, the controller controls the positioning hydraulic device of the positioning mechanism 3 to start working, the positioning hydraulic device drives the pin shaft 311 to move downwards to be separated from the positioning piece 23, meanwhile, the sensing block 33 moves downwards to sense with the lower positioning proximity switch 34, the lower positioning proximity switch 34 transmits a trigger signal to the controller, and the controller controls the positioning hydraulic device to stop working and controls the locking hydraulic device of the locking mechanism 4 to start working;
the locking hydraulic device drives the pull rod assembly 41 to move upwards, the head of the pull rod head 411 is driven to move upwards to leave the upper surface of the lower clamping groove 22, meanwhile, the micro-pulse displacement sensor 44 measures the upward moving distance of the pull rod assembly 41, when the upward moving distance reaches a preset value, the micro-pulse displacement sensor 44 sends a signal to the controller, and the controller controls the locking hydraulic device to stop working and controls the servo motor 573 to start working;
the servo motor 573 drives the chain conveying mechanism 57 to pull the movable workbench 2 to move towards the direction of the movable machine seat 5, and the lower clamping groove 22 on the lower surface of the movable workbench 2 is gradually sleeved on the guide head 552 of the guide mechanism 55 through the rolling fit of the supporting large wheel 53 and the supporting small wheel 54 until the movable workbench 2 moves to the designated position of the movable machine seat 5, and the controller controls the servo motor 573 to stop working;
after the mold replacement on the movable table 2 is completed, the process returns to the step one.
The foregoing description is only specific embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The press moving platform system is characterized in that: comprises a press machine base (1), a movable workbench (2), a positioning mechanism (3), a locking mechanism (4) and a movable machine base (5); the movable workbench (2) is movably arranged above the press machine base (1), an upper clamping groove (21) penetrating through the front end and the rear end of the movable workbench (2) is formed in the upper surface of the movable workbench (2) along the moving direction of the movable workbench, the upper clamping groove (21) is used for mounting a die, a lower clamping groove (22) penetrating through the front end and the rear end of the movable workbench (2) is formed in the lower surface of the movable workbench (2) along the moving direction of the movable workbench, a positioning piece (23) is arranged on the movable workbench (2), and the positioning piece (23) is used for being matched with the positioning mechanism (3) to center and position the movable workbench (2); the locking mechanism (4) is matched with the lower clamping groove (22) to lock the movable workbench (2) on the press machine base (1), and an alignment mechanism for assisting in aligning the movable workbench (2) is arranged on the press machine base (1); the movable machine seat (5) is arranged at the rear end of the press machine seat (1) along the moving direction of the movable workbench (2), a chain conveying mechanism (57) is arranged on the movable machine seat (5), the chain conveying mechanism (57) drives the movable workbench (2) to move back and forth on the press machine seat (1) and the movable machine seat (5), and a guide mechanism (55) which is matched with the lower clamping groove (22) to guide the moving direction of the movable workbench (2) is arranged on the movable machine seat (5); the side of the mobile machine seat (5) is provided with a chain tensioning detection mechanism (58), and the chain tensioning detection mechanism (58) comprises a chain leaning wheel (581) supported by a chain (572) of the chain conveying mechanism (57), an inductor (582) fixedly arranged on the mobile machine seat (5) and a cantilever plate (583) arranged on the side of the mobile machine seat (5); the near end of the cantilever plate (583) is rotationally connected to the mobile machine seat (5), the far end is arranged in a suspending way, the chain (572) is positioned above the sensor (582) when being tensioned, the chain leaning wheel (581) is rotationally connected between the near end and the far end of the cantilever plate (583), and the chain (572) loosens to enable the far end of the cantilever plate (583) to rotate downwards to trigger the sensor (582) to alarm.
2. The press moving platform system according to claim 1, wherein: the alignment mechanism is a plurality of guide wheels (13) which are arranged on two sides of the movable workbench (2) and are arranged along the moving direction of the movable workbench (2), and the guide wheels (13) are arranged close to the movable workbench (2).
3. The press moving platform system according to claim 1, wherein: the guide mechanism (55) comprises a guide rail (551) arranged along the moving direction of the moving workbench (2), a plurality of guide heads (552) are uniformly and fixedly connected to the guide rail (551), the guide heads (552) are matched with the lower clamping grooves (22) of the moving workbench (2), and the guide heads (552) are matched with the lower clamping grooves (22) in a rolling mode.
4. The press moving platform system according to claim 1, wherein: the press frame (1) is provided with travel switch (11) and limiting plate (12) that prevent that moving table (2) from deviating from press frame (1) along moving direction's front end of moving table (2), travel switch (11) are connected with the controller electricity, moving table (2) touch travel switch (11), travel switch (11) will trigger signal transmission controller, controller control moving table (2) stop the removal, fixed mounting has shock attenuation piece (121) on limiting plate (12).
5. The press moving platform system according to claim 1, wherein: the positioning mechanism (3) is arranged in the press stand (1), the positioning mechanism (3) comprises a guide piece (31) and a positioning driving device (32) for driving the guide piece (31) to move up and down, the positioning driving device (32) can drive the guide piece (31) to move up and extend into the positioning piece (23), an induction block (33) is arranged at the bottom of the positioning mechanism (3), an upper positioning proximity switch (34) and a lower positioning proximity switch (34) are arranged on the side edge of the induction block (33), and the upper positioning proximity switch and the lower positioning proximity switch (34) respectively correspond to the upper limit and the lower limit of the movement of the guide piece (31); the positioning driving device (32), the sensing block (33) and the positioning proximity switch (34) are respectively and electrically connected with the controller.
6. The press moving platform system according to claim 1, wherein: the locking mechanism (4) is arranged inside the press machine base (1), the locking mechanism (4) comprises a pull rod assembly (41) and a locking driving device (42) for driving the pull rod assembly (41) to move up and down, the locking hydraulic device drives the head of the pull rod assembly (41) to press down the clamping groove (22) to lock the movable workbench (2), the locking mechanism (4) is provided with a measuring device for accurately measuring the displacement distance of the pull rod assembly (41), and the measuring device is electrically connected with the controller.
7. The press moving platform system according to claim 6, wherein: the locking mechanism (4) is provided with a plurality of groups altogether and is respectively arranged at the front end and the rear end of the movable workbench (2) along the moving direction of the movable workbench, each group of locking mechanism (4) comprises two pull rod assemblies (41) and a locking driving device (42), the two pull rod assemblies (41) are arranged at intervals in parallel, a cross beam (43) is horizontally arranged at the lower part of each of the two pull rod assemblies (41), the lower ends of the two pull rod assemblies (41) are respectively and fixedly connected at the two ends of the cross beam (43), and the locking driving devices (42) are fixed between the two pull rod assemblies (41) to drive the two pull rod assemblies (41) to move up and down synchronously.
8. The press moving platform system according to claim 7, wherein: the measuring device is a micro-pulse displacement sensor (44) arranged at the lower side of one locking mechanism (4), a positioning magnetic block of the micro-pulse displacement sensor (44) is arranged on a cross beam (43), and a measuring element of the micro-pulse displacement sensor (44) is arranged below the locking mechanism (4).
9. The press moving platform system according to claim 1, wherein: the middle position of the movable base (5) is provided with a plurality of supporting large wheels (53) in a rolling way along the moving direction of the movable workbench (2), and the two sides of the movable base (5) are provided with a plurality of supporting small wheels (54) in a rolling way along the moving direction of the movable workbench (2).
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| CN201710998531.8A CN107639873B (en) | 2017-10-24 | 2017-10-24 | Press mobile platform system |
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| CN201710998531.8A CN107639873B (en) | 2017-10-24 | 2017-10-24 | Press mobile platform system |
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| CN108098456A (en) * | 2018-02-05 | 2018-06-01 | 重庆机床(集团)有限责任公司 | The small stroke driving device of on-line checking |
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