CN112845880B - Stamping die for die protection - Google Patents
Stamping die for die protection Download PDFInfo
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- CN112845880B CN112845880B CN202110211102.8A CN202110211102A CN112845880B CN 112845880 B CN112845880 B CN 112845880B CN 202110211102 A CN202110211102 A CN 202110211102A CN 112845880 B CN112845880 B CN 112845880B
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- 230000007246 mechanism Effects 0.000 claims abstract description 64
- 238000004804 winding Methods 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000033001 locomotion Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000004080 punching Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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- Mechanical Engineering (AREA)
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Abstract
The invention belongs to the field of stamping dies, and particularly relates to a stamping die for die protection, which comprises a base, a top plate, support columns, a platform, a hydraulic pump, a hydraulic column, a die holder, a die, a limiting plate and a limiting mechanism, wherein the top plate is arranged above the base through four symmetrically distributed support columns; compared with the guide mechanism of a hardware stamping die with the patent number of CN 107745045, the guide mechanism adopts a driving motor and a stepping motor as driving modes of related structures, and the guide mechanism can achieve the same effect by driving only through one stepping motor, and is simple and convenient to operate; compared with the mode that two motors are adopted to realize the effect of protecting the die, the invention has only one stepping motor, thereby reducing the cost to a certain extent. In addition, the invention has simple structure and high practicability under the condition that only one stepping motor is used as a drive.
Description
Technical Field
The invention belongs to the field of stamping dies, and particularly relates to a stamping die for die protection.
Background
The hardware used in life is punched through the hardware stamping die, the efficiency of forming the required hardware through the hardware stamping die is high, and the produced hardware is standard in specification; the hardware stamping die is widely applied to industrial production, parts are produced by adopting the hardware stamping die, the production efficiency is high, batch standard production can be realized, raw materials are saved, and the utilization rate of the raw materials is improved; meanwhile, the stamping die can realize the characteristic of no cutting processing. In the stamping process, if the stamping stroke of the die is not limited, the die continuously moves towards the platform after the stamping of the raw material is completed and is in contact, collision and extrusion with the platform, so that the die is damaged or deformed; the production cost of the die used in the production process is high, and unnecessary loss of enterprises is caused by the damage of the die; in addition, the guide mechanism of the hardware stamping die disclosed in the prior art with the patent number of CN 107745045 adopts a driving mode of two motors, and a control system of the two motors relative to the guide mechanism is complex, is complex to operate and has high cost; we have therefore proposed a stamping die that can be used to limit the die stamping stroke to solve the above-mentioned problems.
The invention designs a stamping die for die protection, which solves the problems.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses a stamping die for die protection, which is realized by adopting the following technical scheme.
In the description of the present invention, it should be noted that, the terms "inner", "outer", "upper", "lower", and the like indicate an orientation or a positional relationship based on that shown in the drawings, or an orientation or a positional relationship conventionally put in use of the inventive product, merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured or operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
A stamping die for mould protection, its characterized in that: the hydraulic machine comprises a base, a top plate, support columns, a platform, a hydraulic pump, a hydraulic column, a die holder, a die, a limiting plate and a limiting mechanism, wherein the top plate is arranged above the base through four support columns which are symmetrically distributed; a hydraulic pump is arranged below the top plate, and a vertical telescopic hydraulic column is arranged below the hydraulic pump; the lower end of the hydraulic column is provided with a die holder, and the lower end of the die holder is provided with a die; the mould is matched with a platform arranged on the base; the limiting plate moving synchronously with the expansion of the hydraulic column is matched with a limiting mechanism arranged on the base.
The limiting mechanism comprises a shell, a shaft A, a friction wheel, a one-way driving mechanism, a shaft B, a limiting block, a friction plate, a sliding block, a reset spring, a thin steel wire, a winding wheel, a shaft C, a shaft D, an incomplete gear, a gear A and a stepping motor, wherein a vertical shaft A and a vertical shaft B are matched with a bearing in the shell; the shaft A is provided with two unidirectional driving mechanisms which are connected through a shaft sleeve rotating on the shaft A; the shaft sleeve is in transmission connection with the shaft B; the external thread on the shaft B is in threaded fit with the threaded hole on the U-shaped limiting block; the limiting block which vertically slides along the axial direction of the shaft B is matched with the limiting plate; the sliding block horizontally slides in the shell; one end of the sliding block is provided with an arc-shaped friction plate, and the other end of the sliding block is respectively in transmission connection with two winding wheels symmetrically distributed on two sides of the sliding block through two thin steel wires, and the winding directions of the thin steel wires on the two winding wheels are opposite; the friction plate is matched with a friction wheel arranged on the shaft sleeve; the sliding block is provided with a reset spring for resetting the sliding block; the shaft C of each winding wheel is in transmission connection with the shaft D of the incomplete gear arranged in the shell; a stepping motor is arranged on the inner wall of the shell; the gear A arranged on the output shaft of the stepping motor is matched with the incomplete gear; the output shaft of the stepping motor is connected with the shaft A in a transmission way.
The unidirectional driving mechanism comprises a rotating ring A, a rotating ring B, a clamping block B, a fixed ring, a clamping block A and a spiral spring, wherein the rotating ring A with the end face connected with one end of the shaft sleeve rotates on the shaft A; the rotary ring B rotating on the shaft A is embedded into the annular groove A on the inner wall of the shaft hole of the rotary ring A; the fixed ring arranged on the shaft A is embedded into the annular groove B on the inner wall of the shaft hole of the rotating ring B; the clamping block A arranged on the outer cylindrical surface of the fixed ring is matched with the clamping block B arranged on the inner wall of the annular groove B; the spiral spring for resetting the rotary ring B is nested on the outer cylindrical surface of the rotary ring B.
The spiral directions of the spiral springs in the two unidirectional driving mechanisms are opposite.
As a further improvement of the technology, the limiting mechanism is arranged on the base through a fixed seat A; the limiting block is arranged on the hydraulic column through the connecting block; two sliding sleeves are symmetrically arranged at two ends of the limiting plate, and the two sliding sleeves are respectively nested and slide on the two supporting columns. The cooperation of the sliding sleeve and the supporting column plays a role in positioning and guiding the vertical movement of the limiting plate.
As a further improvement of the technology, the two supporting legs of the limiting block vertically slide in the two guide grooves on the side face of the shell. The guide groove plays a role in positioning and guiding the vertical movement of the limiting block.
As a further improvement of the present technique, a gear D is mounted on the above-mentioned sleeve, and the gear D is meshed with a gear E mounted on the shaft B.
As a further improvement of the technology, a fixed seat B is arranged on the inner wall of the shell, and a trapezoid guide block arranged at the lower end of the sliding block slides in a trapezoid guide groove on the fixed seat B; the two shafts C are respectively matched with the bearings of the fixed seat B; the two shafts C are respectively provided with gears G, and the two gears G are simultaneously meshed with a gear F arranged on a shaft D; the shaft D is matched with a fixed seat C bearing arranged on the inner wall of the shell; the fixed seat C is provided with a gear B through a shaft, and the gear B is simultaneously meshed with the gear A and the gear C arranged on the shaft A. The cooperation of the trapezoid guide blocks and the trapezoid guide grooves plays a role in positioning and guiding the movement of the sliding block.
As a further improvement of the technology, one end of the sliding block, on which the friction plate is not arranged, is connected with the inner wall of the shell through a telescopic rod, the telescopic rod prevents the compressed return spring from bending, and the return failure of the sliding block caused by the bending of the compressed return spring is avoided; the return spring is nested on the telescopic rod; the return spring is a compression spring; one end of the reset spring is connected with the sliding block, and the other end of the reset spring is connected with the inner wall of the shell; two fixing blocks are symmetrically arranged on two sides of the sliding block and are respectively connected with thin steel wires wound on the two winding wheels.
As a further improvement of the technology, the transmission ratio of the gear A to the gear C is smaller than 1, the transmission ratio of the gear D to the gear E is smaller than 1, the output shaft of the stepping motor is guaranteed to drive the shaft B to rotate at a high speed through the gear A, the gear B, the gear C, the shaft A, the gear D and the gear E, the shaft B which rotates at a high speed drives the limiting block which is in threaded fit with the shaft B to move rapidly in the vertical direction, and then the height position of the limiting block is adjusted rapidly and effectively.
Compared with the traditional stamping die, the height position of the limiting block in the limiting mechanism arranged on the stamping die can be adjusted according to dies of different specifications; when the hydraulic column drives the die to punch the material positioned on the platform downwards through the die holder, the limiting plate which moves synchronously with the hydraulic column just meets the limiting block and is limited by the limiting block to move downwards continuously, so that the die which has completed punching the material is prevented from moving downwards continuously under the drive of the telescopic column, the die is prevented from being damaged due to extrusion deformation caused by mutual extrusion of the die and the platform due to continuous downwards movement of the die, the service life of the die is prolonged, and the production cost of enterprises is reduced; compared with the guide mechanism of a hardware stamping die with the patent number of CN 107745045, the guide mechanism adopts a driving motor and a stepping motor as driving modes of related structures, and the guide mechanism can achieve the same effect by driving only through one stepping motor, and is simple and convenient to operate; compared with the mode that two motors are adopted to realize the effect of protecting the die, the invention has only one stepping motor, thereby reducing the cost to a certain extent. In addition, the invention has simpler structure and high practicability under the condition that only one stepping motor is used as a drive; the invention has simple structure and better use effect.
Drawings
Fig. 1 is an overall schematic diagram of the apparatus.
Fig. 2 is a schematic cross-sectional view of the stopper, the limiting plate, the sliding sleeve and the supporting column.
Fig. 3 is a schematic cross-sectional view of the spacing mechanism.
Fig. 4 is a schematic partial cross-sectional view of a spacing mechanism.
Fig. 5 is a schematic cross-sectional view of the spool, shaft C, gear G, gear F, shaft D, and incomplete gear engagement.
Fig. 6 is a schematic cross-sectional view of the slider and the fixing base B.
Fig. 7 is a schematic cross-sectional view of the unidirectional drive mechanism and shaft a.
FIG. 8 is a schematic top view of a friction wheel, friction plate, slider, fixed block, wire, and spool fit.
Fig. 9 is a schematic top view of the stop block, housing, stepper motor, gear a, incomplete gear, gear B and gear C.
Fig. 10 is a schematic cross-sectional view of two unidirectional drive mechanisms mated with a sleeve.
Fig. 11 is a schematic view of the various components of the unidirectional drive mechanism.
Fig. 12 is a schematic perspective view of the housing.
Reference numerals in the figures: 1. a base; 2. a top plate; 3. a support column; 4. a platform; 5. a hydraulic pump; 6. a hydraulic column; 7. a die holder; 8. a mold; 10. a limiting plate; 11. a sliding sleeve; 12. a connecting block; 13. a limiting mechanism; 14. a fixing seat A; 15. a housing; 16. a guide groove; 17. an axis A; 18. a gear C; 19. a gear D; 20. a friction wheel; 21. a unidirectional driving mechanism; 22. a rotating ring A; 23. a ring groove A; 24. a rotating ring B; 25. a ring groove B; 26. a clamping block B; 27. a fixing ring; 28. a clamping block A; 29. a spiral spring; 32. a gear E; 33. an axis B; 34. a limiting block; 35. a friction plate; 36. a slide block; 37. a trapezoidal guide block; 38. a fixed block; 39. a fixing seat B; 40. a trapezoidal guide groove; 41. a telescopic rod; 42. a return spring; 43. a thin steel wire; 44. a winding wheel; 45. an axis C; 46. a gear G; 47. a gear F; 48. an axis D; 49. an incomplete gear; 50. a fixing seat C; 51. a gear A; 52. a stepping motor; 53. a gear B; 54. a shaft sleeve.
Detailed Description
The drawings are schematic representations of the practice of the invention to facilitate understanding of the principles of operation of the structure. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.
As shown in fig. 1, 3 and 4, the hydraulic machine comprises a base 1, a top plate 2, a support column 3, a platform 4, a hydraulic pump 5, a hydraulic column 6, a die holder 7, a die 8, a limiting plate 10 and a limiting mechanism 13, wherein as shown in fig. 1 and 2, the top plate 2 is arranged above the base 1 through four symmetrically distributed support columns 3; a hydraulic pump 5 is arranged below the top plate 2, and a vertical telescopic hydraulic column 6 is arranged below the hydraulic pump 5; the lower end of the hydraulic column 6 is provided with a die holder 7, and the lower end of the die holder 7 is provided with a die 8; the mould 8 is matched with the platform 4 arranged on the base 1; the limiting plate 10 which moves synchronously with the expansion and contraction of the hydraulic column 6 is matched with a limiting mechanism 13 arranged on the base 1.
As shown in fig. 3, 4 and 5, the limiting mechanism 13 includes a housing 15, a shaft a17, a friction wheel 20, a unidirectional driving mechanism 21, a shaft B33, a limiting block 34, a friction plate 35, a slider 36, a return spring 42, a wire 43, a winding wheel 44, a shaft C45, a shaft D48, an incomplete gear 49, a gear a51 and a stepping motor 52, wherein as shown in fig. 3 and 4, the housing 15 is internally bearing-fitted with a vertical shaft a17 and a vertical shaft B33; the shaft A17 is provided with two unidirectional driving mechanisms 21, and the two unidirectional driving mechanisms 21 are connected through a shaft sleeve 54 rotating on the shaft A17; the shaft sleeve 54 is in transmission connection with the shaft B33; the external thread on the shaft B33 is in threaded fit with the threaded hole on the U-shaped limiting block 34; as shown in fig. 4 and 8, a stopper 34 that slides vertically along the axis B33 is engaged with the stopper plate 10; the slide block 36 horizontally slides in the housing 15; one end of the sliding block 36 is provided with an arc-shaped friction plate 35, and the other end is respectively in transmission connection with two winding wheels 44 symmetrically distributed on two sides of the sliding block through two thin steel wires 43, and the winding directions of the thin steel wires 43 on the two winding wheels 44 are opposite; friction plate 35 cooperates with friction wheel 20 mounted on sleeve 54; the slider 36 is provided with a return spring 42 for returning the slider; as shown in fig. 5, the axis C45 on which each reel 44 is located is in driving connection with the axis D48 on which the incomplete gear 49 is located, which is mounted in the housing 15; a stepping motor 52 is arranged on the inner wall of the shell 15; as shown in fig. 4 and 9, a gear a51 mounted on the output shaft of the stepping motor 52 is engaged with the incomplete gear 49; the output shaft of the stepper motor 52 is in driving connection with the shaft a 17.
As shown in fig. 10 and 11, the unidirectional driving mechanism 21 includes a rotary ring a22, a rotary ring B24, a fixture block B26, a fixed ring 27, a fixture block a28, and a spiral spring 29, wherein, as shown in fig. 4 and 10, the rotary ring a22 with an end surface connected to one end of a shaft sleeve 54 rotates on a shaft a 17; the rotating ring B24 rotating on the shaft A17 is embedded into the annular groove A23 on the inner wall of the shaft hole of the rotating ring A22; the fixed ring 27 arranged on the shaft A17 is embedded into the annular groove B25 on the inner wall of the shaft hole of the rotary ring B24; as shown in fig. 4, 7 and 11, a clamping block a28 mounted on the outer cylindrical surface of the fixing ring 27 is matched with a clamping block B26 mounted on the inner wall of the ring groove B25; as shown in fig. 7 and 11, the spiral spring 29 for resetting the rotary ring B24 is nested on the outer cylindrical surface thereof.
As shown in fig. 7, the spiral directions of the spiral springs 29 in the above two unidirectional driving mechanisms 21 are opposite.
As shown in fig. 2, the limiting mechanism 13 is mounted on the base 1 through a fixing seat a 14; the limiting block 34 is arranged on the hydraulic column 6 through the connecting block 12; two sliding sleeves 11 are symmetrically arranged at two ends of the limiting plate 10, and the two sliding sleeves 11 are respectively nested and slide on the two support columns 3. The cooperation of the sliding sleeve 11 and the supporting column 3 plays a role in positioning and guiding the vertical movement of the limiting plate 10.
As shown in fig. 9 and 12, the two legs of the limiting block 34 slide vertically in the two guide grooves 16 on the side surface of the housing 15. The guide groove 16 plays a positioning and guiding role for the vertical movement of the stopper 34.
As shown in fig. 4, a gear D19 is attached to the sleeve 54, and the gear D19 meshes with a gear E32 attached to the shaft B33.
As shown in fig. 4 and 6, a fixing seat B39 is mounted on the inner wall of the housing 15, and a trapezoidal guide block 37 mounted on the lower end of the slider 36 slides in a trapezoidal guide groove 40 on the fixing seat B39; as shown in fig. 5, the two shafts C45 are respectively in bearing fit with the fixed seat B39; the two shafts C45 are respectively provided with gears G46, and the two gears G46 are simultaneously meshed with a gear F47 arranged on a shaft D48; the shaft D48 is matched with a fixed seat C50 bearing arranged on the inner wall of the shell 15; as shown in fig. 4, a gear B53 is mounted on the fixed seat C50 through a shaft, and the gear B53 is simultaneously engaged with the gear a51 and the gear C18 mounted on the shaft a 17. The cooperation of the trapezoidal guide block 37 and the trapezoidal guide groove 40 plays a role in positioning and guiding the movement of the slide block 36.
As shown in fig. 4, one end of the slider 36, on which the friction plate 35 is not mounted, is connected to the inner wall of the housing 15 through a telescopic rod 41, and the telescopic rod 41 prevents the compressed return spring 42 from bending, and prevents the compressed return spring 42 from bending and failing to return the slider 36; the return spring 42 is nested on the telescopic rod 41; the return spring 42 is a compression spring; one end of the return spring 42 is connected with the sliding block 36, and the other end is connected with the inner wall of the shell 15; two fixing blocks 38 are symmetrically arranged on two sides of the sliding block 36, and the two fixing blocks 38 are respectively connected with thin steel wires 43 wound on two winding wheels 44.
As shown in fig. 4 and 9, the transmission ratio of the gear a51 to the gear C18 is smaller than 1, and the transmission ratio of the gear D19 to the gear E32 is smaller than 1, so that the output shaft of the stepping motor 52 drives the shaft B33 to rotate at a high speed through the gear a51, the gear B53, the gear C18, the shaft a17, the gear D19 and the gear E32, and the shaft B33 which rotates at a high speed drives the limiting block 34 in threaded fit with the shaft B33 to move rapidly along the vertical direction, thereby rapidly and effectively completing the adjustment of the height position of the limiting block 34.
The stepper motor 52 of the present invention is electrically connected to the control system using prior art techniques.
According to the invention, under the action of the friction plate 35 and the friction wheel 20, after the height of the limiting block 34 is adjusted, the friction plate 35 is in friction fit with the friction wheel 20, and the rotation of the shaft A17 is limited; the gear E32 cannot rotate under the action of external force, the gear E32 cannot drive the shaft B33 to rotate, and the shaft B33 cannot drive the limiting block 34 in threaded fit with the shaft B33 to move in the vertical direction; so that the position of the regulated stopper 34 is fixed.
As shown in FIG. 7, the fixture A28 of the unidirectional driving mechanism 21 rotates less than one turn relative to the fixture B26, and the deformation of the spiral spring 29 is enough to drive the limiting block 34 to move through a series of transmission.
In the invention, when the stepping motor 52 drives the limiting block 34 to vertically reach a position which is a fixed distance away from a target position through a series of transmission, the control system controls the stepping motor 52 to stop running, and after the stepping motor 52 stops running, the spiral spring 29 in the unidirectional driving mechanism 21 which plays a driving role previously releases energy; the spiral spring 29 which releases energy simultaneously drives the rotary ring A22 in the corresponding unidirectional driving mechanism 21 to continuously rotate, the rotary ring A22 drives the gear D19 to continuously rotate in the same direction through the shaft sleeve 54, the gear D19 drives the shaft B33 to continuously rotate through the gear E32, and the rotating shaft B33 drives the limiting block 34 in threaded fit with the shaft B33 to continuously move to a target position to be debugged; simultaneously, the spiral spring 29 for releasing energy drives the shaft A17 to reversely rotate through the corresponding rotating ring B24, the clamping block B26, the clamping block A28 and the fixed ring 27; the latch a28 in the unidirectional driving mechanism 21, which was not previously driven, approaches the corresponding latch B26; when the limit block 34 reaches the target position under the drive of the energy-releasing scroll spring 29, the energy-releasing scroll spring 29 returns to the original state, and the clamping block A28 and the clamping block B26 in the unidirectional driving mechanism 21 which does not play a driving role previously come into contact again; the stopper 34 just reaches its target position from the position where the stepping motor 52 is stopped, the stroke when the stopper 34 reaches its target position from the position where the stepping motor 52 is stopped, is taken as an advance, when the height of the stopper 34 is adjusted each time, the stepping motor 52 is stopped when the stopper 34 reaches the advance position, and in the process of resetting the inside of the limiting mechanism 13, the stopper 34 automatically runs the stroke of the advance and reaches its target position, and the adjustment of the height of the stopper 34 is completed. Since the stopper 34 is screw-fitted with the shaft B33 and the screw-fitted has a self-locking function, the stopper 34 is positioned at its target position so as not to be easily displaced; in order to avoid the rotation of the gear E32 under the action of external force, the rotating gear E32 drives the limiting block 34 to move through the shaft B33; after the stepping motor 52 stops running, when the inside of the limiting mechanism 13 is quickly reset, the friction plate 35 and the friction wheel 20 are contacted again and limit the rotation of the gear D19, so that the position of the limiting block 34 is further fixed, and the movement stroke of the die 8 for punching is effectively limited. The specific value of the advance before the stopper 34 reaches the target position is obtained through a number of tests.
The working flow of the invention is as follows: in the initial state, the clamping blocks A28 in the two unidirectional driving mechanisms 21 are respectively contacted with the corresponding clamping blocks B26; the arc-shaped friction plate 35 is in complete contact with and friction fit with the friction wheel 20; gear a51 meshes with the tooth surface center in the incomplete gear 49; the return spring 42 is compressed.
When the die 8 is replaced, the specification of the die 8 is changed, and the effective stamping stroke of the replaced die 8 for completing single stamping is changed relative to stamping materials with the same specification, so that the die 8 is prevented from being damaged due to the fact that the actual stroke of the hydraulic pump 5 driving the die 8 to move downwards through the hydraulic column 6 and the die holder 7 is larger than the stamping stroke of the hydraulic pump, the die 8 and the platform 4 are mutually extruded, the height position of a limiting block 34 in the limiting mechanism 13 is required to be adjusted up and down, the stroke of the hydraulic column 6 is limited through a limiting plate 10, the stroke of the hydraulic column 6 driving the die 8 to move downwards through the die holder 7 is controlled within a reasonable range corresponding to the die 8, and the hydraulic column 6 drives the die 8 to stop continuing to move downwards after the stamping of the materials is just completed through the die holder 7; the adjustment flow of the limiting block 34 in the limiting mechanism 13 is as follows:
The stepping motor 52 is controlled to operate through the control system, and the stepping motor 52 drives the incomplete gear 49 to rotate through the gear A51; the incomplete gear 49 drives the gear F47 to synchronously rotate through the shaft D48; the gear F47 drives two gears G46 meshed with the gear F to rotate; the two gears G46 drive the coaxial winding wheels 44 to rotate through corresponding shafts C45 respectively, and the rotation directions of the two winding wheels 44 are the same; since the winding directions of the thin steel wires 43 wound on the two winding wheels 44 are opposite, one winding wheel 44 continues to wind the thin steel wires 43, and the other winding wheel 44 discharges the thin steel wires 43 wound thereon; the winding wheel 44 continuing to wind the thin steel wire 43 pulls the sliding block 36 to slide along the trapezoidal guide groove 40 through the thin steel wire 43 and the corresponding fixed block 38, and the return spring 42 is further compressed; the sliding block 36 drives the friction plate 35 to be separated from the friction wheel 20 and removes the rotation restriction on the friction wheel 20, so that the friction plate 35 and the friction wheel 20 are ensured not to interact in the adjustment process of the limiting block 34. When the gear a51 is engaged with the tooth surface of the incomplete gear 49, the continuously rotating gear a51 continuously dials the end tooth of the incomplete gear 49, so that the incomplete gear 49 is basically kept in a stationary state and does not continue to rotate, and further, the incomplete gear 49 does not drive the two wire winding wheels 44 to continue to rotate through the shaft D48, the gear F47, the two gears G46 and the two shafts C45, the slider 36 is kept nearby the fixed position and does not continue to move, and the friction plate 35 is kept in a separated state from the friction wheel 20.
Meanwhile, the gear A51 drives the fixed rings 27 in the two unidirectional driving mechanisms 21 to synchronously rotate through the gear B53, the gear C18 and the shaft A17, the clamping block A28 on one fixed ring 27 is separated from the corresponding clamping block B26 and the corresponding scroll spring 29 is not deformed, and the clamping block A28 on the other fixed ring 27 drives the corresponding rotating ring B24 to synchronously rotate through the clamping block B26; under the action of external load, the rotating ring B24 which rotates synchronously with the shaft A17 drives the corresponding spiral spring 29 to deform and store energy; when the deformation amount of the deformed scroll spring 29 reaches a certain degree, the elastic force generated by the deformation of the scroll spring 29 is enough to drive the corresponding rotating ring A22 to synchronously rotate; at this time, the one-way driving mechanism 21 in which the deformed spiral spring 29 is located plays a driving role, and the other one-way driving mechanism 21 does not play a driving role; the rotary ring A22 in the unidirectional driving mechanism 21 playing a driving role drives the rotary ring A22 in the other unidirectional driving mechanism 21 to synchronously rotate through the shaft sleeve 54, the rotary ring A22 drives the corresponding rotary ring B24 to synchronously rotate through the corresponding spiral spring 29, and the clamping block B26 synchronously rotates along with the clamping block A28; the clamping block A28 and the clamping block B26 in the unidirectional driving mechanism 21 which does not generate driving action do not generate relative motion any more and keep a certain distance to synchronously rotate; simultaneously, the rotating shaft sleeve 54 drives the shaft B33 to rotate at a high speed through the gear D19 and the gear E32, and the shaft B33 drives the limiting block 34 in threaded fit with the shaft B33 to vertically move upwards or downwards along the guide groove 16.
When the distance between the limiting block 34 and the target position is the advance, the control system controls the stepping motor 52 to stop running; at this time, the rotation ring a22 in the one-way drive mechanism 21 that previously had a drive action continues to rotate under the return action of the deformed spiral spring 29, and the shaft a17 is reversed; since the stepper motor 52 has a braking torque, the shaft A17 overcomes the braking torque of the stepper motor 52 through the gear C18, the gear B53 and the gear A51 to drive the output shaft of the stepper motor 52 to slowly rotate reversely; the clamping block A28 and the clamping block B26 in the unidirectional driving mechanism 21 which previously plays a driving role always keep in contact, and the clamping block A28 and the clamping block B26 in the unidirectional driving mechanism 21 which previously does not play a driving role are quickly close; the rotating ring A22 which continues to rotate continuously drives the gear D19 to rotate through the shaft sleeve 54; the gear D19 drives the limiting block 34 to continuously move towards the target position through the gear E32 and the shaft B33; when the stopper 34 moves to the target position, the energy release of the energy release scroll spring 29 is ended and the initial state is restored, the clamping block A28 and the clamping block B26 in the unidirectional driving mechanism 21 which does not play a driving role previously are contacted again, the rotation of the rotating rings A22 in the two unidirectional driving mechanisms 21 is stopped, and the rotation of the shaft A17 is stopped; at this time, under the restoring action of the restoring spring 42, the slider 36 just returns, and the friction plate 35 is pressed again in contact with the friction wheel 20.
In the process of slowly reversing the stepping motor 52, under the action of the reset spring 42, the stepping motor 52 drives the incomplete gear 49 to slowly reversely and reversely reset through the gear A51, and the incomplete gear 49 drives the two winding wheels 44 to reversely and slowly rotate through the shaft D48, the gear F47, the two gears G46 and the two shafts C45; the wire winding wheel 44, which previously winds the fine wire 43, slowly winds the corresponding fine wire 43 by slowly paying out the fine wire 43 wound thereon and slowly releasing the restriction on the slider 36; the slowly fed thin steel wire 43 is kept in a tight state all the time due to the action of the return spring 42, so that the sliding block 36 is pulled; under the reset action of the reset spring 42 and the pulling of the tensioned thin steel wire 43, the sliding block 36 is slowly reset; when the stored-energy spiral spring 29 is completely restored, the limiting block 34 just runs for the advance to reach the target position, the sliding block 36 just resets, the friction plate 35 is contacted with the friction wheel 20 again and the friction fit is restored, and the meshing of the gear A51 and the incomplete gear 49 is restored to the initial state.
After the position of the limiting block 34 is adjusted, the control system controls the hydraulic pump 5 to operate, the hydraulic pump 5 drives the hydraulic column 6 to extend, and the hydraulic column 6 drives the die 8 to move through the die holder 7 to press the punching material positioned on the platform 4 and finish punching; when the limiting plate 10 moves downwards along with the hydraulic column 6 and meets the limiting block 34 with the adjusted height, the die 8 just completes stamping of stamping materials, the limiting block 34 limits the telescopic column through the limiting plate 10 to drive the die 8 to move downwards continuously through the die holder 7, and damage caused by collision and extrusion of the die 8 and the platform 4 is avoided.
In summary, the invention has the following beneficial effects: the height position of the limiting block 34 in the limiting mechanism 13 arranged on the die can be adjusted according to the dies 8 with different specifications; when the hydraulic column 6 drives the die 8 to punch the material positioned on the platform 4 downwards through the die holder 7, the limiting plate 10 which moves synchronously with the hydraulic column 6 just meets the limiting block 34 and is limited by the limiting block 34 to continue to move downwards, so that the die 8 which has completed punching the material is prevented from continuing to move downwards under the drive of the telescopic column, the die 8 which is caused by the mutual extrusion of the die 8 and the platform 4 and is prevented from being damaged due to extrusion deformation, the service life of the die 8 is prolonged, and the production cost of enterprises is reduced; compared with the ' guiding mechanism of a hardware stamping die 8 ' with the patent number of CN 107745045 ' which adopts a driving motor and a stepping motor 52 as a driving mode of related structures, the invention can realize the same effect by only driving through one stepping motor 52, and has simple and convenient operation; compared with the effect of protecting the die 8 by adopting two motors, the invention has only one stepping motor 52, thereby reducing the cost to a certain extent. In addition, the present invention has a simple structure and high practicability even when only one stepping motor 52 is used as a drive.
Claims (1)
1. A stamping die for mould protection, its characterized in that: the hydraulic machine comprises a base, a top plate, support columns, a platform, a hydraulic pump, a hydraulic column, a die holder, a die, a limiting plate and a limiting mechanism, wherein the top plate is arranged above the base through four support columns which are symmetrically distributed; a hydraulic pump is arranged below the top plate, and a vertical telescopic hydraulic column is arranged below the hydraulic pump; the lower end of the hydraulic column is provided with a die holder, and the lower end of the die holder is provided with a die; the mould is matched with a platform arranged on the base; the limiting plate which moves synchronously along with the expansion of the hydraulic column is matched with a limiting mechanism arranged on the base;
The limiting mechanism comprises a shell, a shaft A, a friction wheel, a one-way driving mechanism, a shaft B, a limiting block, a friction plate, a sliding block, a reset spring, a thin steel wire, a winding wheel, a shaft C, a shaft D, an incomplete gear, a gear A and a stepping motor, wherein a vertical shaft A and a vertical shaft B are matched with a bearing in the shell; the shaft A is provided with two unidirectional driving mechanisms which are connected through a shaft sleeve rotating on the shaft A; the shaft sleeve is in transmission connection with the shaft B; the external thread on the shaft B is in threaded fit with the threaded hole on the U-shaped limiting block; the limiting block which vertically slides along the axial direction of the shaft B is matched with the limiting plate; the sliding block horizontally slides in the shell; one end of the sliding block is provided with an arc-shaped friction plate, and the other end of the sliding block is respectively in transmission connection with two winding wheels symmetrically distributed on two sides of the sliding block through two thin steel wires, and the winding directions of the thin steel wires on the two winding wheels are opposite; the friction plate is matched with a friction wheel arranged on the shaft sleeve; the sliding block is provided with a reset spring for resetting the sliding block; the shaft C of each winding wheel is in transmission connection with the shaft D of the incomplete gear arranged in the shell; a stepping motor is arranged on the inner wall of the shell; the gear A arranged on the output shaft of the stepping motor is matched with the incomplete gear; the output shaft of the stepping motor is in transmission connection with the shaft A;
the unidirectional driving mechanism comprises a rotating ring A, a rotating ring B, a clamping block B, a fixed ring, a clamping block A and a spiral spring, wherein the rotating ring A with the end face connected with one end of the shaft sleeve rotates on the shaft A; the rotary ring B rotating on the shaft A is embedded into the annular groove A on the inner wall of the shaft hole of the rotary ring A; the fixed ring arranged on the shaft A is embedded into the annular groove B on the inner wall of the shaft hole of the rotating ring B; the clamping block A arranged on the outer cylindrical surface of the fixed ring is matched with the clamping block B arranged on the inner wall of the annular groove B; the spiral spring for resetting the rotary ring B is nested on the outer cylindrical surface of the rotary ring B;
The spiral directions of the spiral springs in the two unidirectional driving mechanisms are opposite;
the two supporting legs of the limiting block vertically slide in the two guide grooves on the side surface of the shell;
the shaft sleeve is provided with a gear D which is meshed with a gear E arranged on a shaft B;
A fixed seat B is arranged on the inner wall of the shell, and a trapezoid guide block arranged at the lower end of the sliding block slides in a trapezoid guide groove on the fixed seat B; the two shafts C are respectively matched with the bearings of the fixed seat B; the two shafts C are respectively provided with gears G, and the two gears G are simultaneously meshed with a gear F arranged on a shaft D; the shaft D is matched with a fixed seat C bearing arranged on the inner wall of the shell; a gear B is arranged on the fixed seat C through a shaft, and the gear B is simultaneously meshed with the gear A and the gear C arranged on the shaft A;
One end of the sliding block, on which the friction plate is not arranged, is connected with the inner wall of the shell through a telescopic rod; the return spring is nested on the telescopic rod; the return spring is a compression spring; one end of the reset spring is connected with the sliding block, and the other end of the reset spring is connected with the inner wall of the shell; two fixing blocks are symmetrically arranged on two sides of the sliding block and are respectively connected with thin steel wires wound on two winding wheels;
The transmission ratio of the gear A to the gear C is smaller than 1, and the transmission ratio of the gear D to the gear E is smaller than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110211102.8A CN112845880B (en) | 2019-08-13 | 2019-08-13 | Stamping die for die protection |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110211102.8A CN112845880B (en) | 2019-08-13 | 2019-08-13 | Stamping die for die protection |
| CN201910744281.4A CN110405074B (en) | 2019-08-13 | 2019-08-13 | Stamping die of protection die |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910744281.4A Division CN110405074B (en) | 2019-08-13 | 2019-08-13 | Stamping die of protection die |
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| Publication Number | Publication Date |
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| CN112845880A CN112845880A (en) | 2021-05-28 |
| CN112845880B true CN112845880B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910744281.4A Active CN110405074B (en) | 2019-08-13 | 2019-08-13 | Stamping die of protection die |
| CN202110211102.8A Active CN112845880B (en) | 2019-08-13 | 2019-08-13 | Stamping die for die protection |
| CN202110210796.3A Active CN112845879B (en) | 2019-08-13 | 2019-08-13 | Stamping die equipment for protecting die |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910744281.4A Active CN110405074B (en) | 2019-08-13 | 2019-08-13 | Stamping die of protection die |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110210796.3A Active CN112845879B (en) | 2019-08-13 | 2019-08-13 | Stamping die equipment for protecting die |
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| CN (3) | CN110405074B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112845880A (en) | 2021-05-28 |
| CN112845879A (en) | 2021-05-28 |
| CN112845879B (en) | 2024-04-26 |
| CN110405074B (en) | 2021-05-04 |
| CN110405074A (en) | 2019-11-05 |
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Effective date of registration: 20240401 Address after: No. 22 Zhandong Road, Baosi Village, Tangxia Town, Rui'an City, Wenzhou City, Zhejiang Province, 325200 Applicant after: Ruian Yintong Electric Appliance Co.,Ltd. Country or region after: China Address before: 321203 No.46 Xishu village, Liucheng she Town, Wuyi County, Jinhua City, Zhejiang Province Applicant before: Zou Sue Country or region before: China |
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