CN113399566A - Composite flanging die for engine hood outer plate and using method - Google Patents

Composite flanging die for engine hood outer plate and using method Download PDF

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Publication number
CN113399566A
CN113399566A CN202110723000.4A CN202110723000A CN113399566A CN 113399566 A CN113399566 A CN 113399566A CN 202110723000 A CN202110723000 A CN 202110723000A CN 113399566 A CN113399566 A CN 113399566A
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CN
China
Prior art keywords
male die
flanging
die
movable
movable male
Prior art date
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Granted
Application number
CN202110723000.4A
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Chinese (zh)
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CN113399566B (en
Inventor
周厚新
彭永前
韦衍杰
李亮
朱念
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Dongfeng Motor Corp
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Dongfeng Motor Corp
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Priority to CN202110723000.4A priority Critical patent/CN113399566B/en
Publication of CN113399566A publication Critical patent/CN113399566A/en
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Publication of CN113399566B publication Critical patent/CN113399566B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00Flanging or other edge treatment, e.g. of tubes
    • B21D19/08Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides
    • B21D37/12Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/06Stripping-off devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/84Making other particular articles other parts for engines, e.g. connecting-rods

Abstract

The invention discloses a composite flanging die for an outer plate of an engine hood and a using method, wherein the die comprises the following steps: a base; the fixed male die is fixed on the base and used for pressing the inclined flanging; the movable male die is fixed on the base, and one end of the movable male die, which is far away from the fixed male die, is used for pressing a straight flanging; the scraper is fixed on the base, one end of the scraper is close to the movable male die, and the scraper can move back and forth parallel to the pressing direction; the movable male die comprises a first state and a second state, when the movable male die is in the first state, the movable male die is combined with the fixed male die and then used for pressing a straight flanging and an inclined flanging, and when the movable male die is in the second state, the movable male die moves downwards to generate relative displacement with the scraper so as to separate the outer plate; the driving mechanism drives the movable male die to switch between a first state and a second state; the problems that the structure of a traditional composite flanging die is complex and the maintenance is difficult due to the fact that the movable male die and other parts are arranged at the inclined flanging position of the outer plate are solved.

Description

Composite flanging die for engine hood outer plate and using method
Technical Field
The application relates to the field of mold design, in particular to a composite flanging mold for an outer plate of an engine hood and a using method of the composite flanging mold.
Background
The automobile engine is a machine for converting energy of a certain form into mechanical energy, and has the functions of converting chemical energy of liquid or gas into heat energy after combustion, converting the heat energy into mechanical energy through expansion and outputting power to the outside.
The engine is the heart of the automobile and provides power for the walking of the automobile. The engine is simply an energy conversion mechanism, namely the heat energy of gasoline is converted into mechanical energy by pushing a piston to do work when combustion gas expands in a sealed cylinder, which is the most basic principle of the engine.
Currently, an automobile engine cover is formed by covering outer and inner panels of the cover and is used for covering components of an automobile engine and an engine room. Wherein before the engine hood planking bordures, its process part is realized by the punching press, and its punching press technology generally divide into: blanking (blanking) → drawing → trimming → flanging (due to the difference of stamping processes, the flanging process is completed once, and the flanging process is completed twice, so that the flanging process is completed once, and the composite flanging process is adopted).
When the part is in an open state before flanging, no negative angle part exists, so that the part placing process before flanging has no interference with the die. And after the engine cover outer plate is flanged, the front baffle side is a straight flange, and the front grille side is an inclined flange. Because the part has the negative angle behind the oblique turn-ups, so there is the interference with the mould, leads to unable piece of getting. In order to solve the problem that a negative angle exists after flanging, a special moving mechanism is usually arranged on a die to avoid the negative angle part.
According to the traditional flanging die for the engine hood outer plate, in order to achieve flanging and then take out parts without interference, a movable male die is arranged at a negative angle of the front grille side. After the oblique flanging on the front grid side is finished, the movable male die is retracted to avoid negative angle interference through the movement of the driving block, and therefore the workpiece taking is finished.
It can be seen that under the structure, the part with the negative angle of the workpiece is provided with movable parts such as a movable convex die of the die, and the like, so as to avoid the negative angle and facilitate workpiece taking. And the position of the product before and after the flanging is unchanged. Since the parts moving obliquely are complicated, the manufacturing cost and the maintenance cost of the mold are high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a new method and a new structure, wherein movable parts such as a movable convex die of a die and the like are arranged at a straight flanging position of a manufactured part, a negative angle part of an inclined flanging is arranged as a fixed part, and the negative angle interference part is avoided by changing the positions of the manufactured part in different states, namely the movement of the manufactured part, so that the material returning and the workpiece taking are smoothly finished.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the utility model provides a compound turn-ups mould of engine bonnet planking which characterized in that includes:
a base.
And the fixed male die is fixed on the base, and one end of the fixed male die is used for pressing the inclined flanging of the outer plate.
And the movable male die is fixed on the base, the movable male die is arranged at the other end of the fixed male die, and one end of the movable male die, which is far away from the fixed male die, is used for pressing a straight flanging of the outer plate.
And the scraper is fixed on the base, one end of the scraper extends to one end, close to the movable male die, for pressing a straight flanging of the outer plate, and the scraper can move back and forth in parallel with the pressing direction.
The movable male die comprises a first state and a second state, when the movable male die is in the first state, the movable male die and the fixed male die are combined and then used for pressing a straight flanging and an inclined flanging of the outer plate, and when the movable male die is in the second state, the movable male die moves downwards and generates relative displacement with the scraper so as to enable the outer plate to be separated from the movable male die.
And the driving mechanism is used for driving the movable male die to switch between a first state and a second state.
In some embodiments, the scraper comprises:
the elastic scraper is fixed on the base and can stretch and retract in a direction parallel to the pressing direction;
and the vertical scraper block is connected to the elastic scraper, and one end of the vertical scraper block extends to the end close to the movable male die for pressing the straight flanging of the outer plate.
In some embodiments, an oblique scraping block is arranged at one end of the fixed male die, which is used for performing oblique flanging pressing on the outer plate, and the oblique scraping block is connected with a first cylinder.
In some embodiments, the drive mechanism comprises:
a pulley;
and when the movable male die is positioned at the second position, the bulge at one side corresponds to the pit at the other side, so that the movable male die is in the second state.
And the pulley is connected with the second cylinder, is positioned in a cavity formed by the fixed male die and the base, and is driven to move back and forth in a direction perpendicular to the pressing direction, so that the driving guide plate is switched between a first position and a second position.
In some embodiments, the base is provided with a limiting block for limiting the movement range of the pulley.
In some embodiments, a first guide plate is arranged between the movable male die and the fixed male die.
In some embodiments, a cushion block is arranged between the pulley and the movable male die.
In some embodiments, a second guide plate is disposed between the sled and the base.
In some embodiments, the base has a plurality of cavities therein.
The invention also discloses a use method of the composite flanging die for the outer plate of the engine hood, which specifically comprises the following steps:
s1, a driving mechanism drives the movable male die to be in a first state, so that the movable male die and the fixed male die form a combined body.
And S2, placing the outer plate to be flanged into a combined body formed by the movable male die and the fixed male die.
And S3, pressing a straight flanging and an inclined flanging of the outer plate to be flanged, and compressing the scraper to avoid the outer plate to be flanged.
And S4, after the die finishes the straight flanging and the inclined flanging, driving mechanisms drive the movable male die to be switched from a first state to a second state, so that the movable male die moves downwards and generates relative displacement with the scraper, and the outer plate is separated from the movable male die.
And S5, taking out the molded part.
Compared with the prior art, the invention has the advantages that:
the invention provides a composite flanging die for an engine hood outer plate and a using method, wherein the die comprises the following steps: the device comprises a base, a fixed male die, a movable male die, a scraper and a driving mechanism. The fixed male die is arranged on the base, and one end of the fixed male die is used for pressing an inclined flanging of the outer plate; the movable male die is fixed on the base, the movable male die is arranged at the other end of the fixed male die, and one end of the movable male die, which is far away from the fixed male die, is used for pressing a straight flanging of the outer plate; the scraping device is fixed on the base, one end of the scraping device extends to one end close to the movable male die and used for pressing a straight flanging of the outer plate, and the scraping device can move back and forth in parallel with the pressing direction.
The movable male die comprises a first state and a second state, when the movable male die is in the first state, the movable male die and the fixed male die are combined and then used for pressing a straight flanging and an inclined flanging of the outer plate, and when the movable male die is in the second state, the movable male die moves downwards and generates relative displacement with the scraper so as to separate the outer plate from the movable male die; the driving mechanism is used for driving the movable male die to switch from a first state to a second state.
The composite flanging die for the outer plate of the automobile engine hood simultaneously completes the inclined flanging of the engine hood close to the front grille side and the straight flanging of the engine hood close to the front baffle side. Compared with the traditional die structure that the inclined flanging male die is the movable male die and the straight flanging male die is the fixed male die, the die has the advantages that the structure is greatly simplified, and the die manufacturing cost and the maintenance cost are saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a structural diagram of a lower die for flanging.
FIG. 2 is a structural overall view of the die during flanging in the invention.
FIG. 3 is a structural diagram of a lower die for taking out a piece by oblique flanging.
FIG. 4 is a structural view of the lower mold when the part of the present invention is completely removed.
Wherein: 1. a base; 2. fixing the male die; 3. a movable male die; 4. scraping the material device; 41. an elastic scraper; 42. a vertical scraper block; 5. a drive mechanism; 51. a pulley; 52. two drive guide plates; 53. a second cylinder; 6. a limiting block; 7. a first guide plate; 8. cushion blocks; 9. a second guide plate; 10. a top rod; 11. a straight flanging female die; 12. a material pressing plate; 13. a nitrogen cylinder; 14. a buffer block; 15. limiting side pins; 16. an oblique flanging female die; 17. and the wedge sliding block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
The invention provides a composite flanging die for an engine hood outer plate and a using method thereof, which can solve the problems that the traditional composite flanging die for the engine hood outer plate has the effect of avoiding at the negative angle of an inclined flanging to facilitate demoulding because the inclined flanging part at the front grille side is provided with a movable male die and other parts, but the structure also causes the complex structure of the die and the difficult maintenance.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the present invention provides a composite flanging die for an engine cover outer plate, comprising: the device comprises a base 1, a fixed male die 2, a movable male die 3, a scraper 4 and a driving mechanism 5.
The fixed male die 2 is fixed on the base 1, and one end of the fixed male die 2 is used for pressing an inclined flanging of the outer plate.
The movable male die 3 is fixed on the base 1, the movable male die 3 is arranged at the other end of the fixed male die 1, and one end, far away from the fixed male die 2, of the movable male die 3 is used for pressing a straight flanging of the outer plate.
The scraper 4 is fixed on the base 1, one end of the scraper 4 extends to one end close to the movable male die 3 for pressing a straight flanging of the outer plate, and the scraper 4 can move back and forth in parallel with the pressing direction.
The movable male die 3 comprises a first state and a second state, when the movable male die 3 is in the first state, the movable male die 3 and the fixed male die 2 are combined and then used for pressing a straight flanging and an inclined flanging of the outer plate, and when the movable male die 3 is in the second state, the movable male die 3 moves downwards and generates relative displacement with the scraper 4 so that the outer plate is separated from the movable male die 3.
And the driving mechanism 5 is used for driving the movable male die 3 to switch between the first state and the second state.
Furthermore, in a preferred embodiment, the scraper 4 comprises:
and the elastic scraper 41 is fixed on the base 1 and can extend and retract in parallel to the pressing direction.
And the vertical scraper block 42 is connected to the elastic scraper 41, one end of the vertical scraper block 42 extends to a position close to one end of the movable male die 3 for pressing a straight flanging of the outer plate, but the elastic scraper 41 can drive the vertical scraper block 42 to move together in the process of being compressed, and the vertical scraper block cannot contact with the outer plate in the motion process.
In order to enable the flanged part to be better separated from the die, in a better embodiment, one end of the fixed male die 4 for oblique flanging and pressing the outer plate is provided with an oblique scraper block 2, and the oblique scraper block 2 is connected with a first air cylinder 3.
Further, in a preferred embodiment, the drive mechanism 5 comprises:
a trolley 51.
Two driving guide plates 52, one is arranged on the pulley 51, the other is arranged on the movable male die 3, the two driving guide plates 52 are respectively provided with a concave pit and a convex pit which are matched with each other, when the two driving guide plates are positioned at a first position, the convex pits at two sides are contacted to enable the movable male die 3 to be in a first state, at the moment, the movable male die 3 is jacked up to form a combined body with the fixed male die 2 for pressing an outer plate, when the two driving guide plates are positioned at a second position, the convex pit at one side corresponds to the concave pit at the other side, the movable male die 3 falls down to be matched with the pulley 51, at the moment, the two driving guide plates 52 are opposite in a concave-convex mode.
And the second air cylinder 53 is connected with the trolley 51 and is positioned in a cavity formed by the fixed male die 2 and the base 1, and the trolley 51 is driven to move back and forth in a direction perpendicular to the pressing direction so as to switch the driving guide plate 52 between the first position and the second position.
Furthermore, in order to limit the movement range of the pulley 51, a limit block 6 is arranged on the base 1 to prevent the pulley from sliding out of the limit during the movement process of the pulley, so that the pulley cannot be reset by the second air cylinder 53.
In a preferred embodiment, in order to facilitate the relative displacement between the movable punch 3 and the stationary punch 2, a first guide 7 is provided between the movable punch 3 and the stationary punch 2, which guide reduces the friction during the relative displacement between the movable punch 3 and the stationary punch 2.
Further, in a preferred embodiment, a second guide 9 is provided between the trolley 7 and the base 1, where the guide reduces friction during relative displacement between the trolley 7 and the base 1.
Further, in order to reduce the impact force between the two driving guide plates 7 during movement, a cushion block 8 is arranged between the pulley 51 and the movable punch 9, wherein the cushion block 8 plays a role of buffering and guiding between the pulley 51 and the movable punch 9.
Furthermore, in order to reduce the overall mass of the mold, a plurality of cavities are arranged in the base 1, the arranged cavities do not influence the service performance of the mold, and the actual production requirements can be fully met.
The invention also comprises a using method of the composite flanging die for the outer plate of the engine hood, which is characterized by comprising the following steps:
s1, a driving mechanism 5 drives the movable male die 3 to be in a first state, so that the movable male die 3 and the fixed male die 2 form a combined body.
S2, placing the outer plate to be flanged into a combined body formed by the movable male die 3 and the fixed male die 2.
And S3, pressing a straight flanging and an inclined flanging of the outer plate to be flanged, and compressing the scraper 4 to avoid the outer plate to be flanged.
And S4, after the die finishes straight flanging and inclined flanging, the driving mechanism 5 drives the movable male die 3 to be switched from a first state to a second state, so that the movable male die 3 moves downwards and generates relative displacement with the scraper 4, and the outer plate is separated from the movable male die 3.
S5, taking out the molded part, and finishing flanging of the straight flanging and the inclined flanging by the outer plate.
The working principle of the invention is as follows:
the upper die is released, and the first air cylinder 22 drives the inclined scraper block 21 to retreat; the corresponding second air cylinder 53 drives the pulley 51 to move rightwards, and the driving guide plate 52 arranged on the pulley 51 pushes the movable male die 3 to move vertically upwards and stop at the position of the front stop to be flanged; the elastic scraper 41 drives the vertical scraper block 42 to eject to a limit position to stop. At the moment, the workpiece to be flanged is placed into the die.
The mould is closed, the material pressing plate 12 presses the workpiece, and the first air cylinder 22 drives the inclined scraper block 21 to be still in a retraction state so as to avoid inclined flanging at the side negative angle of the front grid of the workpiece; meanwhile, the mandril 10 presses down the vertical scraper block 41 arranged on the elastic scraper 42 to avoid the straight flanging at the front baffle side of the workpiece.
At the moment, the inclined wedge sliding block 17 drives the inclined flanging female die 16 to be staggered with the fixed male die 2, and inclined flanging at the negative angle on the side of the front grid of the workpiece is completed together; meanwhile, the straight flanging female die 11 is staggered with the movable male die 3 to jointly complete the straight flanging of the front stop side of the workpiece, and at the moment, the die completes the composite flanging of the workpiece.
After the mould is flanged, the upper mould is opened, the ejector rod 10 moves upwards along with the upper mould, the elastic scraper 41 drives the vertical scraper block 42 to be pushed out upwards, then the second air cylinder 53 pushes the pulley 51 to move leftwards and is limited by the limiting block 6, and at the moment, the movable male mould 3 moves under the action of gravity until contacting with the cushion block 8 and stopping. In the process, the movable male die 3 and the vertical scraper block 42 move oppositely, so that the front baffle side straight flanging of the workpiece is scraped out of the movable male die 3 by the vertical scraper block 42, namely, the material returning at the front baffle side straight flanging of the workpiece is completed. Then, the first cylinder 22 drives the inclined scraper block 21 to push out, the scraped workpiece leans against the inclined flanging at the front grid side, the flanged workpiece moves towards the right side, and the scraped workpiece is scraped out of the fixed male die 2, namely the material returning is completed at the negative-angle inclined flanging at the front grid side of the workpiece.
After the flanged workpiece is scraped out of the fixed punch 2, the first cylinder 22 drives the inclined scraper block 21 to retreat, so that the flanged workpiece is in a completely free state, and at the moment, the workpiece is in a state of waiting for taking the workpiece.
After the workpiece is taken out, the second air cylinder 53 drags the pulley 51 to move rightwards, the movable male die 3 is jacked upwards under the action of the driving guide plate 52, and the movable male die 3 is finally stopped at the straight flanging position due to the stopping function of the driving guide plate 52. At this time, the mold is in a state of waiting for the piece. At this point, one cycle of outer plate pressing is finished, and the parts are reset to prepare for the next pressing cycle.
In summary, the invention provides a composite flanging die for an engine hood outer plate and a use method thereof, and the die comprises the following steps: the device comprises a base, a fixed male die, a movable male die, a scraper and a driving mechanism. The fixed male die is arranged on the base, and one end of the fixed male die is used for pressing an inclined flanging of the outer plate; the movable male die is fixed on the base, the movable male die is arranged at the other end of the fixed male die, and one end of the movable male die, which is far away from the fixed male die, is used for pressing a straight flanging of the outer plate; the scraping device is fixed on the base, one end of the scraping device extends to one end close to the movable male die and used for pressing a straight flanging of the outer plate, and the scraping device can move back and forth in parallel with the pressing direction.
The movable male die comprises a first state and a second state, when the movable male die is in the first state, the movable male die and the fixed male die are combined and then used for pressing a straight flanging and an inclined flanging of the outer plate, and when the movable male die is in the second state, the movable male die moves downwards and generates relative displacement with the scraper so as to separate the outer plate from the movable male die; the driving mechanism is used for driving the movable male die to switch from a first state to a second state.
The composite flanging die for the outer plate of the automobile engine hood simultaneously completes the inclined flanging of the engine hood close to the front grille side and the straight flanging of the engine hood close to the front baffle side. Compared with the traditional die structure that the inclined flanging male die is the movable male die and the straight flanging male die is the fixed male die, the die has the advantages that the structure is greatly simplified, and the die manufacturing cost and the maintenance cost are saved.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a compound turn-ups mould of engine bonnet planking which characterized in that includes:
a base (1);
the fixed male die (2) is fixed on the base (1), and one end of the fixed male die (2) is used for pressing an inclined flanging of the outer plate;
the movable male die (3) is fixed on the base (1), the movable male die (3) is arranged at the other end of the fixed male die (1), and one end, far away from the fixed male die (2), of the movable male die (3) is used for pressing a straight flanging of the outer plate;
the scraper (4) is fixed on the base (1), one end of the scraper (4) extends to one end, close to the movable male die (3), for pressing a straight flanging of the outer plate, and the scraper (4) can move back and forth in parallel with the pressing direction;
the movable male die (3) comprises a first state and a second state, when the movable male die (3) is in the first state, the movable male die (3) is combined with the fixed male die (2) and then used for pressing a straight flanging and an inclined flanging of the outer plate, and when the movable male die (3) is in the second state, the movable male die moves downwards and generates relative displacement with the scraper (4) so as to separate the outer plate from the movable male die (3);
and the driving mechanism (5) is used for driving the movable male die (3) to switch between the first state and the second state.
2. The engine hood outer panel composite flanging die of claim 1, wherein the scraper (4) comprises:
the elastic scraper (41) is fixed on the base (1) and can extend and retract in parallel to the pressing direction;
and the vertical scraper block (42) is connected to the elastic scraper (41), and one end of the vertical scraper block (42) extends to the end close to the movable convex die (3) for pressing the straight flanging of the outer plate.
3. The engine hood outer panel composite flanging die according to claim 1, wherein one end of the fixed male die (2) used for performing inclined flanging pressing on an outer panel is provided with an inclined scraper block (21), and the inclined scraper block (21) is connected with a first air cylinder (22).
4. The engine hood outer panel composite flanging die according to claim 2, wherein the driving mechanism (5) comprises:
a sled (51);
two driving guide plates (52), wherein one driving guide plate is arranged on the pulley (51), the other driving guide plate is arranged on the movable male die (3), concave pits and convex pits which are matched with each other are respectively arranged on the two driving guide plates (52), when the two driving guide plates are positioned at a first position, the convex pits at two sides are contacted to ensure that the movable male die (3) is in a first state, and when the two driving guide plates are positioned at a second position, the convex pits at one side correspond to the convex pits at the other side to ensure that the movable male die (3) is in a second state;
and the second air cylinder (53) is connected with the pulley (51), is positioned in a cavity formed by the fixed male die (2) and the base (1), and drives the pulley (51) to move back and forth in a direction perpendicular to the pressing direction so as to switch the driving guide plate (52) between the first position and the second position.
5. The engine hood outer panel composite flanging die according to claim 3, characterized in that a limiting block (6) is arranged on the base (1) and used for limiting the movement range of the pulley (51).
6. The engine hood outer panel composite flanging die according to claim 1, characterized in that a first guide plate (7) is arranged between the movable male die (3) and the fixed male die (2).
7. The engine hood outer panel composite flanging die according to claim 1, characterized in that a cushion block (8) is arranged between the pulley (7) and the movable male die (9).
8. The engine hood outer panel composite flanging die according to claim 1, characterized in that a second guide plate (9) is arranged between the pulley (7) and the base (1).
9. The engine hood outer panel composite flanging die according to claim 1, characterized in that a plurality of cavities are formed in the base (1).
10. The use method of the engine hood outer plate composite flanging die is characterized by comprising the following steps of:
s1, a driving mechanism (5) drives the movable male die (3) to be in a first state, so that the movable male die (3) and the fixed male die (2) form a combined body;
s2, placing the outer plate to be flanged into a combination formed by the movable male die (3) and the fixed male die (2);
s3, pressing a straight flanging and an inclined flanging of the outer plate to be flanged, and compressing the scraper (4) to avoid the outer plate to be flanged;
s4, after the die finishes straight flanging and inclined flanging, a driving mechanism (5) drives the movable male die (3) to be switched from a first state to a second state, so that the movable male die (3) moves downwards and generates relative displacement with the scraper (4), and the outer plate is separated from the movable male die (3);
and S5, taking out the molded part.
CN202110723000.4A 2021-06-24 2021-06-24 Composite flanging die for engine hood outer plate and using method Active CN113399566B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201799525U (en) * 2010-09-16 2011-04-20 浙江吉利汽车研究院有限公司 Die with tapered wedge
CN202479300U (en) * 2011-12-23 2012-10-10 北京聚丽威科技有限公司 Negative angle flanging mechanism for multistage transmission vehicle door external panel
CN204412919U (en) * 2014-12-24 2015-06-24 郑州日产汽车有限公司 Diel side flanging forces unloading mechanism
CN204700170U (en) * 2015-06-18 2015-10-14 安徽江淮汽车股份有限公司 A kind of negative angle flange Wedge mechanism
CN208357613U (en) * 2018-05-18 2019-01-11 神龙汽车有限公司 A kind of same sequence realizes the mould structure of three face negative angle material folding flange

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201799525U (en) * 2010-09-16 2011-04-20 浙江吉利汽车研究院有限公司 Die with tapered wedge
CN202479300U (en) * 2011-12-23 2012-10-10 北京聚丽威科技有限公司 Negative angle flanging mechanism for multistage transmission vehicle door external panel
CN204412919U (en) * 2014-12-24 2015-06-24 郑州日产汽车有限公司 Diel side flanging forces unloading mechanism
CN204700170U (en) * 2015-06-18 2015-10-14 安徽江淮汽车股份有限公司 A kind of negative angle flange Wedge mechanism
CN208357613U (en) * 2018-05-18 2019-01-11 神龙汽车有限公司 A kind of same sequence realizes the mould structure of three face negative angle material folding flange

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