CN113042637A - Plate material compression movement multipoint combined limiting system and method of correcting die - Google Patents
Plate material compression movement multipoint combined limiting system and method of correcting die Download PDFInfo
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- CN113042637A CN113042637A CN202110294549.6A CN202110294549A CN113042637A CN 113042637 A CN113042637 A CN 113042637A CN 202110294549 A CN202110294549 A CN 202110294549A CN 113042637 A CN113042637 A CN 113042637A
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/26—Stops
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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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
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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
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
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- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention discloses a plate material pressed moving multipoint combined limiting system and a plate material pressed moving multipoint combined limiting method for a correcting die, and belongs to the technical field of shell stamping forming processes; a plate material compression moving multipoint combined limiting system and a plate material compression moving multipoint combined limiting method for a correction die comprise a die cavity, wherein a limiting device is arranged on the die cavity and comprises limiting grooves, the limiting grooves are arranged in the surface of the die cavity at fixed points, 9 limiting grooves are arranged in the surface of the die cavity, one side of the inner bottom surface of each limiting groove is fixedly connected with a cam stop block, cams with special cross-sectional shapes are also arranged in the limiting grooves, two ends of each cam with the special cross-sectional shapes are fixedly connected with shafts, shaft mounting grooves are also formed in the side wall surfaces of the limiting grooves, and the shafts are matched with the shaft mounting grooves; the invention effectively solves the problems of irregular and non-directional spatial movement in the stamping forming of large irregular thick plates, insufficient curvature forming of plates caused by sliding easily in the stamping process and potential safety hazards in the operation of equipment.
Description
Technical Field
The invention relates to the technical field of shell stamping forming processes, in particular to a plate material pressing movement multipoint combined limiting system and method for a correcting die.
Background
In the process of stamping and forming the large irregular thick plate, the elastic-plastic deformation of the large irregular thick plate influences the curvature deformation of the stamped plate, and the curvature of the cavity lower than the curvature requirement of the plate is selected according to the resilience characteristic of the plate. The die cavity is designed into a hemisphere, the punch is also designed into a hemisphere, so that in the process of stamping and forming the plate, the limitation of the hemisphere punch and the hemisphere die cavity is realized, the plate is easy to generate non-directional spatial motion due to the pressure of the punch, and the non-directional spatial motion has great influence on the forming quality of the plate and the safety of equipment operation, so that a combined limiting method and a limiting system are designed, the limiting system is arranged on the inner surface of the die cavity, and the plate is limited in multiple layers and multiple dimensions.
According to the shapes of a die punch and a die cavity and the actual situation of sheet stamping, a common limiting block is difficult to meet the design requirement, so a special limiting system needs to be designed to meet the die stamping requirement; in order to solve the problems, a multi-point combined limiting method and a multi-point combined limiting system for plate material pressed movement in a large irregular thick plate correcting die are provided.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to provide a plate material pressed moving multipoint combined limiting system and a plate material pressed moving multipoint combined limiting method for a correcting die, which aim to solve the problems in the background technology:
the large irregular thick plate has irregular and non-directional spatial movement in the stamping forming process, and the problems of insufficient curvature forming of the plate and potential safety hazard during the operation of equipment, which are easily caused by sliding, are solved.
2. Technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a sheet material pressurized of correction mould removes spacing system of multiple spot combination and method, including the die cavity, be provided with stop device on the die cavity, stop device includes the spacing groove, the spacing groove fixed point is seted up in die cavity surface inside, the spacing groove is provided with 9 altogether, inside bottom surface one side fixedly connected with cam dog of spacing groove, the inside of spacing groove still is provided with special cross sectional shape cam, the both ends fixedly connected with axle of special cross sectional shape cam, still be provided with the axle mounting groove on the lateral wall face of spacing groove, the axle matches with the axle mounting groove, special cross sectional shape cam passes through the axle and the rotation of axle mounting groove is installed in the spacing inslot.
Preferably, the limiting groove is divided into two layers, namely a large irregular thick plate limiting groove and a small irregular thick plate limiting groove, the large irregular thick plate limiting groove is arranged on one side close to the inner surface of the cavity, and the small irregular thick plate limiting groove is arranged on one side close to the inner part of the cavity.
Preferably, the layout of the limiting grooves is arranged between the highest point and the lowest point which can be reached when the plate material slides to the surrounding non-directional direction, and 2 to 4 layers of limiting grooves can be arranged according to the movement arc length and the actual requirement to carry out multi-layer limiting.
Preferably, the special cross-section-shaped cam is designed in a cross-section water-drop shape, the side with a larger radian has a larger width, and the installation direction of the wide arc side is downward; the special cross-section-shaped cam is small in radian and small in width at one side, and the narrow arc side is upward in mounting direction.
Preferably, a detachable combined connection mode is adopted between the shaft and the cam with the special cross-sectional shape, the middle position of the shaft is designed to be cylindrical, the two ends of the shaft are arranged to be square rods, threaded holes are formed in the square rods and are matched with fixing bolts, and the square rods are fixedly installed in the shaft installation grooves through the fixing bolts and the threaded holes.
Preferably, the theoretical rotation dimension of the cam with the special cross-sectional shape is less than or equal to 180 degrees, and the actual overturning dimension is less than or equal to 90 degrees.
Preferably, when the cam with the special cross-sectional shape is not stressed, the cam with the special cross-sectional shape is turned to be perpendicular to the surface of the cavity due to gravity, the top end of the cam with the special cross-sectional shape is lower than the thickness of a plate when the cam with the special cross-sectional shape is perpendicular, the cam with the special cross-sectional shape is turned to the inside of the limiting groove when the cam with the special cross-sectional shape is extruded by the plate, one side, close to the inside of the limiting groove, of the cam with the special cross-sectional shape is in contact with the cam stop block, one side, far away from the limiting groove.
Preferably, the special cross-sectional shape cam is designed in a unidirectional turnover mode, the sheet material moves downwards in the sheet material stamping process, the special cross-sectional shape cam can be automatically turned into the limiting groove under the pressure of the sheet material, after the sheet material slides through the limiting device, the special cross-sectional shape cam is turned over according to gravity and is perpendicular to the cavity, and when the sheet material slides upwards irregularly again, the special cross-sectional shape cam supports against the sheet material to offset the friction force between the sheet material and the cavity.
Preferably, when the limiting groove is not used, the cam with the special cross-sectional shape and the shaft can be detached, and the metal plate cover matched with the limiting groove is added, so that the inconvenient influence caused by the limiting groove when the die cavity punches other plates is eliminated.
Preferably, the cam stopper design for preventing the cam with the special cross section shape from reversely overturning in the limiting groove needs to be added in the process of processing the cavity and forming the cavity, is designed at two ends of the limiting groove, does not interfere the forward overturning of the cam with the special cross section shape into the limiting groove, and simultaneously prevents the cam with the special cross section shape from reversely overturning.
3. Advantageous effects
(1) When the special cross-section cam is used, the plate bends and moves downwards, the special cross-section cam is unidirectionally turned into the limiting groove due to the influence of plate extrusion in the moving process, and the plate can continue to move downwards to complete stamping and forming. When the plate moves to the bottommost part, the plate passes through the limiting groove, the cam with the special section shape is turned to the original position again due to gravity, one limiting end is perpendicular to the surface of the cavity, the end providing the gravity is blocked by the cam stop block, and the cam is not turned any more. After the sheet material is stamped and formed, the sheet material can continuously move irregularly and nondirectionally around due to the excessively small friction force of extrusion and a cavity; when the plate moves upwards, the cam with the special section shape after being turned blocks the plate to limit the plate to move around continuously, so that the limiting function is achieved; through a series of functions of the limiting system, the problem that the sheet material is easy to generate non-directional space movement due to irregular size and uneven stress in the stamping and forming process of the large irregular thick plate, and the sheet material moves in a correcting die cavity under pressure, so that the forming quality of the sheet material is seriously influenced is solved.
(2) Compared with the existing design, the device adopts the one-way turnover cam design with the special section shape, can well realize smooth and unimpeded downward forming sliding of the plate and position limiting function when the plate slides upward irregularly in the plate stamping process, and designs multi-level and multi-dimensional position limiting according to the shape of the plate.
Drawings
Fig. 1 is a schematic layout view of an in-cavity limiting device of a plate material pressed moving multi-point combined limiting system and method for a correcting die provided by the invention;
fig. 2 is a schematic structural diagram of a limiting device of the plate material pressed moving multipoint combined limiting system and method for a correcting die provided by the invention;
fig. 3 is a top view of a limiting device of the plate material pressure movement multi-point combination limiting system and method for the straightening die provided by the invention.
The reference numbers in the figures illustrate:
1. a cavity; 2. a limiting device; 3. a cam of a special cross-sectional shape; 4. a shaft; 5. a limiting groove; 6. a cam stop; 7. and (4) mounting a shaft in a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-3, a plate material compression movement multipoint combination limiting system and method for a correction die comprises a cavity 1, wherein a limiting device 2 is arranged on the cavity 1, the limiting device 2 comprises a limiting groove 5, the limiting groove 5 is arranged in the surface of the cavity 1 at a fixed point, 9 limiting grooves 5 are arranged, a cam stop block 6 is fixedly connected to one side of the inner bottom surface of the limiting groove 5, a cam 3 with a special cross-sectional shape is also arranged in the limiting groove 5, shafts 4 are fixedly connected to two ends of the cam 3 with the special cross-sectional shape, shaft mounting grooves 7 are also arranged on the side wall surfaces of the limiting groove 5, the shafts 4 are matched with the shaft mounting grooves 7, and the cam 3 with the special cross-sectional shape is rotatably mounted in the limiting groove 5 through the shafts 4 and the shaft mounting grooves 7.
The limiting groove 5 is divided into two layers, namely a large irregular thick plate limiting groove and a small irregular thick plate limiting groove, the large irregular thick plate limiting groove is arranged on one side close to the inner surface of the cavity 1, and the small irregular thick plate limiting groove is arranged on one side close to the inner part of the cavity 1.
The special cross-section-shaped cam 3 adopts a cross-section water-drop-shaped design, the side with larger radian of the special cross-section-shaped cam 3 is wider, and the installation direction of the wide arc side is downward; the cam 3 with the special section shape has a smaller radian and a smaller width at the side with the smaller radian, and the installation direction of the narrow arc side is upward.
Adopt detachable built-up connection mode between axle 4 and the special cross-sectional shape cam 3, axle 4's intermediate position department designs for cylindricly, and axle 4 both ends set up to square pole, set up threaded hole on the square pole, and the screw hole matches with fixing bolt, and square pole passes through fixing bolt and screw hole fixed mounting in axle mounting groove 7.
The theoretical rotation dimension of the special cross-section-shaped cam 3 is less than or equal to 180 degrees, and the actual overturning dimension is less than or equal to 90 degrees.
When the special cross-sectional shape cam 3 is not stressed, the special cross-sectional shape cam 3 is overturned to be perpendicular to the surface of the cavity 1 due to gravity, the height of the top end of the special cross-sectional shape cam 3 is lower than the thickness of a plate when the special cross-sectional shape cam 3 is perpendicular, when the special cross-sectional shape cam 3 is extruded by the plate, the special cross-sectional shape cam 3 is overturned to the inside of the limiting groove 5, one side, close to the inside of the limiting groove 5, of the special cross-sectional shape cam 3 is in contact with the cam stop block 6, one side, far away from the limiting groove 5, of.
When the special cross-section cam mechanism is used, a plate bends and moves downwards, the special cross-section cam 3 is unidirectionally turned into the limiting groove 5 due to the influence of plate extrusion in the moving process, and the plate can continue to move downwards to complete stamping and forming; when the plate moves to the bottommost part, the plate passes through the limiting groove 5, the cam 3 with the special section shape is turned to the original position again due to gravity, one limiting end is perpendicular to the surface of the cavity 1, the end providing the gravity is blocked by the cam stop block 1, and the cam is not turned any more; after the sheet material is stamped and formed, the sheet material can continuously move irregularly and nondirectionally around due to the excessively small friction force between the sheet material and the cavity 1; when the plate moves upwards, the cam 3 with the special section shape after being turned blocks the plate to limit the plate to move around continuously, so that the limiting function is achieved; through a series of functions of the limiting system, the problem that the sheet material is easy to generate non-directional space movement due to irregular size and uneven stress in the stamping and forming process of the large irregular thick plate, and the sheet material moves in a correcting die cavity under pressure, so that the forming quality of the sheet material is seriously influenced is solved.
Example 2:
referring to fig. 1-3, the basic difference between the embodiments 1,
the layout of the limiting grooves 5 is arranged between the highest point and the lowest point which can be reached when the plate material slides to the surrounding non-directional direction, and 2-4 layers of limiting grooves 5 can be arranged according to the movement arc length and the actual requirement to carry out multi-layer limiting.
The special cross-section-shaped cam 3 is designed in a one-way overturning mode, the sheet is formed to move downwards in the sheet punching process, the special cross-section-shaped cam 3 can be automatically overturned into the limiting groove 5 under the pressure of the sheet, after the sheet slides over the limiting device 2, the special cross-section-shaped cam 3 is overturned according to gravity and is perpendicular to the cavity 1, and when the sheet slides upwards and irregularly again, the sheet is abutted to the sheet, and the friction force between the sheet and the cavity 1 is offset.
When the limiting groove 5 is not used, the cam 3 with the special section shape and the shaft 4 can be detached, and a metal plate cover matched with the limiting groove 5 is added, so that the inconvenience influence caused by the limiting groove 5 when other plates are punched by the cavity 1 is eliminated.
The design of the cam stop 6 for blocking the reverse overturning of the cam 3 with the special cross-sectional shape in the limiting groove 5 needs to be added in the process of processing the cavity 1 for forming, and the cam stop and the cavity 1 are formed simultaneously, are designed at two ends of the limiting groove 5, do not interfere the forward overturning of the cam 3 with the special cross-sectional shape into the limiting groove 5, and simultaneously block the reverse overturning of the cam 3 with the special cross-sectional shape.
Compared with the existing design, the design of the unidirectional turnover type special cross-section-shaped cam 3 is adopted, the smooth and unimpeded downward forming sliding of the plate can be well realized in the plate stamping process, the position limiting function is hindered when the plate slides upward irregularly, and multi-level and multi-dimensional position limiting is designed according to the shape of the plate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.
Claims (6)
1. A plate material compression moving multipoint combined limiting system and method of a correction die are characterized in that: including die cavity (1), be provided with stop device (2) on die cavity (1), stop device (2) are including spacing groove (5), spacing groove (5) fixed point is seted up at die cavity (1) inside surface, spacing groove (5) are provided with 9 altogether, inside bottom surface one side fixedly connected with cam dog (6) of spacing groove (5), the inside of spacing groove (5) still is provided with special cross sectional shape cam (3), the both ends fixedly connected with axle (4) of special cross sectional shape cam (3), still be provided with axle mounting groove (7) on the lateral wall face of spacing groove (5), axle (4) and axle mounting groove (7) phase-match, special cross sectional shape cam (3) rotate through axle (4) and axle mounting groove (7) and install inside spacing groove (5).
2. The system and the method for limiting the plate material pressed movement and multipoint combination of the straightening die as claimed in claim 1, wherein: the limiting groove (5) is divided into two layers, namely a large irregular thick plate limiting groove and a small irregular thick plate limiting groove, the large irregular thick plate limiting groove is arranged on one side close to the inner surface of the cavity (1), and the small irregular thick plate limiting groove is arranged on one side close to the inner part of the cavity (1).
3. The system and the method for limiting the plate material pressed movement and multipoint combination of the straightening die as claimed in claim 1, wherein: the special cross-section-shaped cam (3) adopts a cross-section water-drop-shaped design, the side with larger radian of the special cross-section-shaped cam (3) has larger width, and the installation direction of the wide arc side is downward; the special cross-section-shaped cam (3) is smaller in radian and smaller in width at one side, and the narrow arc side is upward in mounting direction.
4. The system and the method for limiting the plate material pressed movement and multipoint combination of the straightening die as claimed in claim 3, wherein: adopt detachable built-up connection mode between axle (4) and special cross sectional shape cam (3), the intermediate position department design of axle (4) is cylindric, axle (4) both ends set up to square pole, set up threaded hole on the square pole, screw hole and fixing bolt phase-match, square pole passes through fixing bolt and screw hole fixed mounting in axle mounting groove (7).
5. The system and the method for limiting the plate material pressed movement and multipoint combination of the straightening die as claimed in claim 1, wherein: the theoretical rotation dimension of the special cross-section-shaped cam (3) is less than or equal to 180 degrees, and the actual overturning dimension is less than or equal to 90 degrees.
6. The system and the method for limiting the plate material pressed movement and multipoint combination of the straightening die as claimed in claim 5, wherein: when special cross sectional shape cam (3) is not atress, because gravity upset to perpendicular with die cavity (1) surface, special cross sectional shape cam (3) top height is less than panel thickness when perpendicular, when special cross sectional shape cam (3) are extruded by the sheet material, inside upset spacing groove (5), special cross sectional shape cam (3) are close to inside one side of spacing groove (5) and contact with cam dog (6), spacing groove (5) one side is kept away from in special cross sectional shape cam (3) flushes with die cavity (1) surface, special cross sectional shape cam (3) lean on outer side surface to adopt with the same camber arc design of arc sheet material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110294549.6A CN113042637B (en) | 2021-03-19 | 2021-03-19 | Plate pressing movement multipoint combination limiting system and method for correcting die |
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| CN202110294549.6A CN113042637B (en) | 2021-03-19 | 2021-03-19 | Plate pressing movement multipoint combination limiting system and method for correcting die |
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| CN113042637A true CN113042637A (en) | 2021-06-29 |
| CN113042637B CN113042637B (en) | 2023-05-09 |
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