Hook punching and shaping die

Abstract

The utility model provides a hook punching shaping die which comprises a lower die module, an upper die module and a hook punching module, and the lower die module comprises a lower die base and a supporting core; the upper die module comprises an upper die base, a supporting rib and a shaping cutter block, the supporting rib is annularly mounted on the upper die base and is provided with a mounting hole, the shaping cutter block is mounted on the supporting rib, and the shaping cutter block is used for extruding a plate together with the supporting core when the upper die module and the lower die are combined so as to shape the plate; the hooking and punching module comprises a hooking and punching assembly connected to the upper die base in a sliding mode, and the hooking and punching assembly is arranged in the mounting hole in a penetrating mode and used for sliding from the initial position to the hooking and punching position relative to the upper die base when the upper die module and the lower die are combined so as to punch a through hole in a plate. According to the hook punching shaping die, a through hole can be punched in a plate while the plate is shaped, two machining procedures can be completed through one die, the development cost of the die and the production cost of the plate are reduced, and the production efficiency of the plate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile manufacturing, and particularly relates to a hook punching and shaping die. Background Art

[0002] The body structure of a car has high requirements for pedestrian protection performance. For this, a collision energy absorption zone is set in the body structure. The collision energy absorption zone needs to deform when a collision occurs to absorb most of the impact energy generated in the accident, thereby reducing the strong impact force borne by pedestrians. Among them, the hood of the car plays a key role in the pedestrian protection performance in the body structure. The hood needs to protect safe pedestrians as much as possible under the premise of ensuring rigidity, durability and fatigue performance. For this, a traditional hood has a collapse hole on the front side wall of the inner plate. The current hood processing is formed in steps by two sets of dies, a hook punching die and a shaping die. The hood is drawn and partially trimmed by the hook punching die to punch out the required collapse hole, and the remaining waste is trimmed, and then the hood peripheral edge is shaped by the shaping die. The cost of the two sets of dies is high, and the step-by-step forming processing method leads to low production efficiency and waste of production energy. Utility Model Content

[0003] The utility model aims to provide a hook punching shaping die, aiming to solve the technical problem of low production efficiency caused by the step-by-step shaping method of two sets of dies in the prior art.

[0004] The utility model is implemented as follows: a hook punching and shaping die is used for hook punching and shaping of sheet materials, comprising:

[0005] A lower die assembly, comprising a lower die die base and a support core installed on the lower die die base;

[0006] The upper die assembly comprises an upper die base, a supporting rib and a shaping knife block, wherein the supporting rib is annular and is mounted on the upper die base, the supporting rib is provided with a mounting hole, and the mounting hole passes through the inner annular surface and the outer annular surface of the supporting rib, and the shaping knife block is mounted on the side of the supporting rib facing away from the upper die base, and the shaping knife block is used to extrude the sheet material together with the supporting core when the upper die assembly and the lower die assembly are clamped in a first direction, so as to shape the sheet material;

[0007] The hook punch die set includes a hook punch component, which is slidably connected to the upper die base and penetrates the mounting hole. The hook punch component is used to slide from a starting position toward a hook punch position relative to the upper die base along a second direction perpendicular to the first direction when the upper die die set is combined with the lower die along a first direction, so as to punch a through hole in the sheet material.

[0008] In one of the embodiments, the hook punch assembly includes an inclined wedge slider slidably connected to the upper die base and inserted into the mounting hole, and an inclined punch connected to the slider and located on the inner annular surface side of the support rib. The inclined punch is inclined toward the outer annular surface side of the support rib and can punch a through hole in the sheet material when the upper die assembly is combined with the lower die assembly along a first direction.

[0009] In one of the embodiments, the upper die base further includes a plurality of flat guide plates connected to the upper die base, a slideway is formed between the flat guide plates and the upper die base, and the inclined wedge slider is slidably connected to the slideway.

[0010] In one embodiment, the support rib has a support surface facing away from the upper die base, the hole wall of the mounting hole is provided with an opening penetrating to the support surface, the shaping knife block is connected to the support surface and covers the opening, the inclined wedge slider is provided with a strip hole, the strip hole extends along the second direction, and the hole wall of the mounting hole is also provided with a guide ridge protruding toward the opening, the guide ridge is penetrated in the strip hole, and the inclined wedge slider is slidably connected to the guide ridge through the strip hole.

[0011] In one of the embodiments, the upper die assembly further includes a limiting pin, which is passed through the strip hole and is used to limit the inclined wedge slider from detaching from the upper die base along the first direction.

[0012] In one embodiment, the hook punch assembly also includes a guide slider connected to the inclined wedge slider and located on the outer annular surface side of the support rib, and the hook punch die group also includes a guide drive block installed on the lower die base, the guide drive block has a guide surface, and the guide slider has a driven inclined surface. The guide surface, the driven inclined surface and the inclined punch all extend along a third direction. When the upper die die group is combined with the lower die die along a first direction, the driven inclined surface abuts against the guide surface and slides along the third direction relative to the guide surface. The third direction forms an acute angle with the first direction and also forms an acute angle with the second direction.

[0013] In one embodiment, the hook-punch assembly further includes a return guide connected to the guide slider, and when the hook-punch assembly is in the starting position, the guide drive block disengages from the return guide, and when the hook-punch assembly moves between the starting position and the hook-punch position, the guide drive block is slidably connected to the return guide.

[0014] In one of the embodiments, the hook punch die set also includes a reset member connected between the upper die base and the hook punch assembly, and the reset member is used to apply a reset force opposite to the second direction to the hook punch assembly when the hook punch assembly slides toward the second direction.

[0015] In one embodiment, the support core has a lower die surface and a lower die flange surface both facing away from the lower die die seat, the lower die flange surface is arranged around the lower die surface, the upper die assembly also includes a pressure core and an elastic member, the pressure core is connected to the upper die die seat through the elastic member, the pressure core has an upper die surface facing away from the upper die die seat, the shaping knife block is arranged around the pressure core and has an upper die flange surface, the pressure core can move between a first position where the upper die surface is away from the upper die flange surface and a second position where the upper die surface is close to the upper die flange surface through elastic deformation of the elastic member, the upper die surface faces the lower die surface, The tool is used to extrude and shape the main body of the sheet material when the distance between the upper die seat and the lower die seat is a first distance, the upper die flange surface faces the lower die flange surface, and is used to extrude and shape the flange portion of the sheet material surrounding the main body when the distance between the upper die seat and the lower die seat is a second distance, when the upper die assembly is combined with the lower die assembly along a first direction, the pressure core can be moved from the first position to the second position under the push of the main body, the distance between the upper die seat and the lower die seat is the second distance, wherein the first distance is greater than the second distance.

[0016] In one embodiment, the core support includes a core body and an insert both connected to the lower mold base, the core body and the lower mold base are integrally formed, the insert is fixedly connected to the upper mold base and protrudes from the edge of the core body along the second direction, the insert is provided with an avoidance groove, and when the hook punch assembly is in the hook punch position, the inclined punch is inserted into the avoidance groove.

[0017] The technical effect of the utility model relative to the prior art is: the hook-punch shaping mold opens a mounting hole on the supporting rib of the upper mold assembly, so that the hook-punch assembly can be installed on the upper mold base by passing through the mounting hole, and avoids the shaping knife block to avoid affecting the shaping process. When the hook-punch shaping mold is in use, the sheet material is first placed on the support core, and then the upper mold base is combined with the lower mold along the first direction in the upper mold assembly along the first direction. At this time, the shaping knife block and the support core jointly extrude the sheet material, and the hook-punch assembly slides from the starting position toward the hook-punch position relative to the upper mold base. When the upper mold assembly and the lower mold assembly complete the mold closing, the shaping knife block and the support core complete the shaping of the sheet material, and the hook-punch assembly is located at the hook-punch position to complete the hook-punch of the sheet material. In this way, the punching and shaping mold can punch through holes on the sheet material while shaping it. The two processing steps can be completed with one mold, which reduces the mold development cost, development time, debugging time and sheet material production cost, improves the sheet material production efficiency, reduces energy waste in the sheet material production process, achieves carbon emission reduction, reduces development and debugging time, and shortens the vehicle development cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional structural diagram of the lower die assembly in the hook punching and shaping die provided by the embodiment of the utility model;

[0020] Figure 2 It is a partial three-dimensional structural diagram of the upper die set and the hook punch die set in the hook punch shaping die provided by the embodiment of the utility model in the assembled state;

[0021] Figure 3 yes Figure 2 The enlarged view of point B in FIG.

[0022] Figure 4 It is a three-dimensional structural diagram of a hook punching die set in a hook punching shaping die provided in an embodiment of the utility model;

[0023] Figure 5 yes Figure 2 Partial exploded view of the upper die assembly and the hook punch die assembly;

[0024] Figure 6 It is a three-dimensional structural diagram of the upper die set and the hook punch die set in the hook punch shaping die provided by the embodiment of the utility model in the assembled state;

[0025] Figure 7 yes Figure 1 Magnified view of point A in .

[0026] Description of reference numerals:

[0027] 10. Lower die assembly; 11. Lower die seat; 1101. Lower mounting surface; 12. Core support; 1201. Lower die surface; 1202. Lower flange surface; 121. Core body; 122. Insert; 1221. Avoidance groove; 13. Lower positioning column; 20. Upper die assembly; 201. Mounting hole; 202. Slide hole; 21. Upper die seat; 2101. Upper mounting surface; 22. Support rib; 2201. Support surface; 221. Guide convex strip; 23. Shaping knife block; 2301. Upper flange surface; 24. Press core ; 2401, upper die surface; 25, elastic member; 26, flat guide plate; 27, upper positioning column; 30, hook punch die set; 31, hook punch assembly; 311, inclined wedge slider; 3111, strip hole; 312, inclined punch; 313, guide slider; 3131, driven inclined surface; 314, limiting pin; 3141, rod; 3142, head; 315, return guide; 316, reset member; 32, guide drive block; 3201, guide surface; 40, lower shaping module; 50, upper shaping module. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] The embodiment of the utility model provides a hook punching and shaping die, which is used to hook punch and shape a sheet material. In this embodiment, the sheet material can be a metal inner plate of a car hood, and in other embodiments, the sheet material can also be other structural parts, as long as it is processed from a sheet material.

[0034] See also Figures 1 to 3 The hook punching and shaping mold includes a lower mold assembly 10, an upper mold assembly 20 and a hook punching mold assembly 30.

[0035] like Figure 1 The lower mold assembly 10 includes a lower mold base 11 and a core 12 mounted on the lower mold base 11. The lower mold base 11 may have a lower mounting surface 1101, and the core 12 may be convexly disposed on the lower mounting surface 1101.

[0036] like Figure 2 and Figure 3 The upper die assembly 20 includes an upper die base 21, support ribs 22 and a shaping knife block 23. The support ribs 22 are annular and are mounted on the upper die base 21. Specifically, the upper die base 21 has an upper mounting surface 2101, and the support ribs 22 are convexly arranged on the upper mounting surface 2101. The support ribs 22 are provided with mounting holes 201, and the mounting holes 201 pass through the inner and outer annular surfaces of the support ribs 22. The shaping knife block 23 is installed on the side of the support ribs 22 facing away from the upper die base 21. The shaping knife block 23 is used to extrude the sheet material together with the support core 12 when the upper die assembly 20 and the lower die assembly 10 are clamped in the first direction to shape the sheet material. When the upper die assembly 20 and the lower die assembly 10 are clamped, the shaping knife block 23 and the support core 12 completely shape the sheet material. The mold closing here refers to the upper mold assembly 20 and the lower mold assembly 10 reaching the position where the support core 12 and the shaping knife block 23 can jointly complete the shaping of the sheet material. Shaping refers to the plastic deformation of the sheet material by pressure to achieve the designed size and shape.

[0037] In this embodiment, the upper mold module 20 and the lower mold module 10 are arranged along the first direction. In other embodiments, the upper mold module 20 and the lower mold module 10 may not be arranged along the first direction, or the upper mold module 20 may not move but the lower mold module 10 may move in the opposite direction of the first direction, as long as the upper mold module 20 and the lower mold module 10 can be closed by the movement of the upper mold module 20 or the lower mold module 10, it will be sufficient.

[0038] like Figure 3 The hook punch die set 30 includes a hook punch component 31, which is slidably connected to the upper die base 21 and is penetrated through the mounting hole 201. The hook punch component 31 can slide between the starting position and the hook punch position along the second direction, and the second direction is perpendicular to the first direction, specifically, the direction from the inner annular surface of the support rib 22 to the outer annular surface. The sliding of the hook punch component 31 can be achieved by a mechanical structure or by an electronic control unit, which is not limited here.

[0039] The hook punch assembly 31 is used to slide from the starting position toward the hook punch position relative to the upper die base 21 along the second direction when the upper die die set 20 is molded with the lower die die set 10 along the first direction, so as to punch a through hole in the sheet material. When the hook punch assembly 31 reaches the hook punch position, the hook punch assembly 31 completes the punching process of the through hole on the sheet material. Among them, hook punching is a type of side punching, which generally refers to a punch or die assembly that is provided with lateral movement in a stamping die, and is used for punching, grooving or other forms of local forming or separation processes on the side of the workpiece, and hook punching is a side punching in the shape of an inner hook of the stamping die. For the sheet material being a hood, the through hole here can be a collapse hole on the hood.

[0040] The hook punch shaping die is provided with a mounting hole 201 on the support rib 22 of the upper die module 20, so that the hook punch component 31 can be installed on the upper die die base 21 by passing through the mounting hole 201, and avoid the shaping knife block 23 to avoid affecting the shaping process. When the hook punch shaping die is in use, the sheet is first placed on the support core 12, and then the upper die die base 21 is molded with the lower die module 10 along the first direction in the upper die module 20 along the first direction. At this time, the shaping knife block 23 and the support core 12 jointly extrude the sheet, and the hook punch component 31 slides from the starting position toward the hook punch position relative to the upper die die base 21. When the upper die module 20 and the lower die module 10 complete the mold closing, the shaping knife block 23 and the support core 12 complete the shaping of the sheet, and the hook punch component 31 is located at the hook punch position to complete the hook punching of the sheet. In this way, the punching and shaping mold can punch through holes on the sheet material while shaping it. The two processing steps can be completed with one mold, which reduces the mold development cost, development time, debugging time and sheet material production cost, improves the sheet material production efficiency, reduces energy waste in the sheet material production process, achieves carbon emission reduction, reduces development and debugging time, and shortens the vehicle development cycle.

[0041] In this embodiment, the first direction may be a direction from top to bottom, the second direction may be a horizontal direction, the upper mold assembly 20 is located above the lower mold assembly 10, the upper mounting surface 2101 faces downward, the lower mounting surface 1101 faces upward, and the upper mounting surface 2101 and the lower mounting surface 1101 may face each other. The upper mold base 21 may move downward until the upper mold assembly 20 and the lower mold assembly 10 are molded together. Of course, the first direction and the second direction may also be other directions, which are not limited here.

[0042] In the following embodiments, the upper mold assembly 20 is located above the lower mold assembly 10, the first direction is the up-down direction, and the sheet material is the hood inner plate. The hood includes a main body and a flange, and the flange is arranged around the main body. The main body is arched, and the flange is horizontally bent relative to the main body.

[0043] In some embodiments, see Figure 3 and Figure 4 The hook punch assembly 31 includes an inclined slider 311 and an inclined punch 312. The inclined slider 311 is slidably connected to the upper die base 21 and is inserted into the mounting hole 201. The inclined punch 312 is connected to the slider and is located on the inner ring surface side of the support rib 22. The inclined punch 312 can extend along a third direction. The angles between the third direction and the first direction and the second direction are both acute angles, and the inclined punch 312 is inclined toward the outer ring surface side of the support rib 22. When the hook punch assembly 31 slides from the starting position toward the hook punch position, the inclined punch 312 moves from the inner ring surface side of the support rib 22 toward the outer ring surface side. The inclined punch 312 can punch a through hole in the sheet when the upper die assembly 20 is moved downward to close the die assembly 10. Among them, the edge area of ​​the main body is inclined, and the extension direction of the inclined punch 312 can be perpendicular to the edge area of ​​the main body. When the upper die set 20 is molded with the lower die set 10 along the first direction, the hook punch assembly 31 slides from the starting position to the hook punch position. Due to the downward movement of the upper die set 20 and the horizontal sliding of the hook punch assembly 31, the inclined punch 312 moves along the third direction relative to the lower die set 10 to punch out the shrinkage hole in the main body along the direction perpendicular to the edge area of ​​the main body. In this way, the hook punch assembly 31 realizes the hook punching of the main body through the inclined punch 312. Since the inclined punch 312 is inclined toward the outer annular surface side of the support member and can be perpendicular to the edge area of ​​the main body, the punching effect of the shrinkage hole is better.

[0044] In some embodiments, see Figure 5 The upper die base 21 further includes a plurality of flat guide plates 26 connected to the upper die base 21, a slideway is formed between the flat guide plates 26 and the upper die base 21, and the inclined wedge slider 311 is slidably connected to the slideway. In this way, the upper die assembly 20 guides the hook punch assembly 31 through the flat guide plates 26, and prevents the hook punch assembly 31 from separating from the upper die base 21 in the vertical direction.

[0045] Specifically, the flat guide plate 26 and the upper die base 21 are jointly arranged to form a guide groove, and the guide groove forms the above-mentioned slideway, and the inclined wedge slider 311 is slidably connected in the guide groove.

[0046] In some embodiments, see Figure 3 and Figure 5 The support rib 22 has a support surface 2201 facing away from the upper die holder 21. The hole wall of the mounting hole 201 is provided with an opening penetrating to the support surface 2201. When the hook punch assembly 31 is assembled with the upper die holder 21, it can be installed in the mounting hole 201 through the opening. The shaping blade block 23 is connected to the support surface 2201 and covers the opening, so that the shaping blade block 23 can form a complete ring shape, and the installation of the hook punch die set 30 does not affect the integrity of the shaping blade block 23. At the same time, the shaping blade block 23 can also limit the upper and lower separation of the hook punch die set 30 relative to the upper die holder 21. The oblique wedge slider 311 is provided with a strip hole 3111, and the strip hole 3111 extends along the second direction, that is, the extension direction of the strip hole 3111 is the same as the sliding direction of the hook punch assembly 31. The hole wall of the mounting hole 201 is also provided with a guide convex strip 221 protruding toward the opening, and the guide convex strip 221 is penetrated in the strip hole 3111. The oblique wedge slider 311 is slidably connected to the guide convex strip 221 through the strip hole 3111. The guide convex strip 221 can guide the sliding path of the hook punch assembly 31, and at the same time improve the reliability of the sliding connection between the hook punch assembly 31 and the upper die base 21.

[0047] Optionally, the shaping blade block 23 may include multiple blade block parts, each of which is fixedly connected to the support rib 22. The multiple blade block parts are connected end to end to form a ring to facilitate the processing of the shaping blade block 23. After a partial area of ​​the shaping blade block 23 is damaged, the damaged individual blade block parts can be directly replaced without replacing the entire part, which saves costs and facilitates later maintenance.

[0048] In some embodiments, see Figure 4 and Figure 5 The upper die assembly 20 further includes a stopper pin 314, which is connected to the oblique wedge slider 311 and is slidably connected to the upper die holder 21. That is, the stopper pin 314 includes a rod 3141 and a head 3142, wherein the rod 3141 is screwed to the oblique wedge slider 311, and the head 3142 can protrude laterally from the rod 3141 and is slidably connected to the upper die holder 21. In this way, when the flat guide plate 26 fails, the stopper pin 314 can be the last safety barrier to prevent the oblique wedge slider 311 from separating from the upper die holder 21, and the stopper pin 314 can be used to detect or check the safety status of the upper die assembly 20. Specifically, the upper die holder 21 is provided with a sliding hole 202, and the head 3142 is slidably connected to the sliding hole 202.

[0049] In some embodiments, see Figure 3 and Figure 4 The hook punch assembly 31 also includes a guide slider 313 connected to the inclined wedge slider 311 and located on the outer ring surface side of the support rib 22. The hook punch die set 30 also includes a guide drive block 32 installed on the lower die base 11. The guide drive block 32 has a guide surface. The guide slider 313 has a driven inclined surface 3131. The guide surface and the driven inclined surface 3131 both extend along the third direction, which is consistent with the extension direction of the inclined punch 312. When the upper die set 20 is downwardly molded with the lower die set 10, the driven inclined surface 3131 abuts against the guide surface and slides along the third direction relative to the guide surface. It can be understood that when the upper die set 20 moves downward, the driven inclined surface 3131 of the guide slider 313 first abuts against the guide surface of the guide drive block 32. As the upper die set 20 continues to move downward, the guide slider 313 slides along the third direction under the guidance of the guide surface, and the hook punch assembly 31 slides from the starting position toward the hook punch position, so that the inclined punch 312 punches the edge area of ​​the main body along the third direction to form a collapse hole. In this way, the hook punch assembly 31 realizes the sliding of the starting position toward the hook punch position through the guide drive block 32.

[0050] Optionally, the guide slider 313 is formed with a V-shaped groove, and two groove walls of the V-shaped groove are set at an angle to form a driven inclined surface 3131. The guide driving block 32 is adapted to the V-shaped groove, and the guide surface 3201 is pointed, so that the guide surface 3201 fits with the driven inclined surface 3131 when they are in contact. The setting of the V-shaped groove of the guide slider 313 can limit the guide slider 313 perpendicular to the sliding direction, so as to avoid the position deviation of the hook punch component 31 and affect the hook punch effect.

[0051] Of course, in other embodiments, the guide driving block 32 may also be provided with a V-shaped groove, and the driven inclined surface 3131 may be pointed, which may be equivalently replaced here and is not specifically limited.

[0052] In some embodiments, see Figure 3 and Figure 4, the hook punch assembly 31 also includes a return guide 315 connected to the guide slider 313. When the hook punch assembly 31 is in the starting position, the guide drive block 32 is separated from the return guide 315. When the hook punch assembly 31 moves between the starting position and the hook punch position, the guide drive block 32 is slidably connected to the return guide 315. In this way, the return guide 315 can guide and limit the hook punch assembly 31 to ensure that the hook punch assembly 31 does not deviate when sliding relative to the guide drive block 32. When the upper die module 20 moves upward and away from the lower die module 10, the guide block 313 can slide in the opposite direction relative to the guide drive block 32 along the third direction under the guiding action of the return guide 315, and the hook punch assembly 31 slides from the hook punch position toward the starting position until the hook punch assembly 31 reaches the starting position, and the guide block 313 is separated from the return guide 315, and the hook punch assembly 31 is separated from the guide drive block 32. In this way, the hook punch assembly 31 is reset through the return guide 315.

[0053] Specifically, the return guide 315 is L-shaped, and there are two return guides 315. The two return guides 315 are respectively arranged on both sides of the guide block 313 and are arranged close to the inclined wedge slider 311. The two return guides 315 and the guide block 313 are jointly arranged to form a slide groove. When the hook punch assembly 31 is in the starting position, the guide drive block 32 is located outside the slide groove. When the hook punch assembly 31 leaves the starting position and slides toward the hook punch position, the guide drive block 32 is slidably connected in the slide groove.

[0054] In some embodiments, see Figure 4 The hook punching die set 30 further includes a reset member 316 connected between the upper die base 21 and the hook punching assembly 31. The reset member 316 is used to apply a reset force opposite to the second direction to the hook punching assembly 31 when the hook punching assembly 31 slides toward the second direction. When the upper die set 20 moves upward, the hook punching assembly 31 can slide from the hook punching position toward the starting position under the reset force of the reset member 316 to achieve reset, so as to prepare for the next hook punching action.

[0055] In this embodiment, the reset member 316 may be a nitrogen spring, and the reset force is an elastic force.

[0056] Optionally, the reset member 316 is located on the outer annular surface side of the support member. When the hook punch assembly 31 is in the hook punch position, the reset member 316 is in a compressed state. When the hook punch assembly 31 is in the starting position, the reset member 316 may be free of force or in a compressed state.

[0057] In other embodiments, the reset member 316 may also be a spring, a common spring, or a magnetic member, in which case the reset force is a magnetic repulsion force.

[0058] Optionally, the hook punch die set 30 may only be provided with a reset member 316, and no return guide member 315. In this case, the hook punch assembly 31 is reset through the reset member 316. During the upward movement of the upper die set 20, the guide block 313 of the hook punch die set 30 is always in contact with the guide drive block 32 under the action of the reset force, so that the hook punch assembly 31 is slowly reset.

[0059] Optionally, the hook punch module 30 may be provided with a reset member 316 and a return guide member 315 at the same time, and the reset member 316 and the return guide member 315 assist each other so that the hook punch component 31 can perform reset sliding stably.

[0060] In some embodiments, see Figure 5 and Figure 6 The support core 12 has a lower die surface 1201 and a lower die flange surface both facing away from the lower die seat 11, and the lower die flange surface is arranged around the lower die surface 1201. The upper die assembly 20 also includes a pressure core 24 and an elastic member 25. The pressure core 24 is connected to the upper die seat 21 through the elastic member 25. The pressure core 24 has an upper die surface 2401 facing away from the upper die seat 21. The shaping blade 23 is arranged around the pressure core 24 and has an upper die flange surface. The pressure core 24 has a first position and a second position. The pressure core 24 can move up and down through the elastic deformation of the elastic member 25. The first position of the pressure core 24 is located below the second position. It should be noted that the first position and the second position here are both relative to the pressure core 24 of the upper die seat 21. When the pressing core 24 is in the first position, the pressing core 24 protrudes downward from the shaping blade 23, and the upper die surface 2401 is away from the upper die flange surface. When the pressing core 24 is subjected to upward pressure and the pressure is greater than the gravity of the pressing core 24 and overcomes the elastic force of the elastic member 25, the pressing core 24 moves upward relative to the upper die seat 21 until it reaches the second position and stops, and the upper die surface 2401 is close to the upper die flange surface. The upper die surface 2401 and the lower die surface 1201 are opposite to each other in the vertical direction, and the upper die flange surface and the lower die flange surface are opposite to each other in the vertical direction. After the hood inner panel is placed on the core 12, its main body is opposite to the lower die surface 1201 in the vertical direction, and its flange is opposite to the lower die flange surface in the vertical direction.

[0061] In the preparation stage, the distance between the upper die seat 21 and the lower die seat 11 is greater than the first distance, and the pressing core 24 is located in the first position. After the hood inner panel is placed on the supporting core 12, the upper die seat 21 moves downward. When the distance between the upper die seat 21 and the lower die seat 11 is the first distance, the upper die surface 2401 presses against the upper surface of the hood inner panel, and the lower die surface 1201 presses against the lower surface of the hood inner panel. The upper die surface 2401 and the lower die surface 1201 are used to extrude and shape the main body together. The upper die seat 21 continues to move downward until the distance between the upper die seat 21 and the lower die seat 11 is the second distance, and the upper die flange surface presses against the upper surface of the flange part, and the lower die flange surface presses against the lower surface of the flange part. The upper die flange surface and the lower die flange surface are used to extrude and shape the flange part together. When the upper mold assembly 20 is moved downward to close the mold with the lower mold assembly 10, the pressing core 24 can be moved from the first position to the second position under the push of the main body. When the distance between the upper mold base 21 and the lower mold base 11 is the first distance, the pressing core 24 can be located at the first position or between the first position and the second position. When the distance between the upper mold base 21 and the lower mold base 11 is the second distance, the upper mold assembly 20 and the lower mold assembly 10 are closed, and the pressing core 24 is at the second position.

[0062] In this way, the hook punch shaping die can first complete the shaping of the main body, and then complete the shaping of the flange. In the process of completing the shaping of the flange, the hook punch component 31 can achieve the hook punching of the edge of the main body. In this way, before the hook punch component 31 performs the hook punching action, the hook punch shaping die can achieve the fixation of the main body position through the cooperation of the pressing core 24 and the supporting core 12, so as to avoid the inner plate of the hood from moving when the hook punch component 31 performs the hook punching action, thereby affecting the hook punching effect.

[0063] Optionally, the elastic member 25 may be a nitrogen spring, and a plurality of elastic members 25 are provided and evenly distributed around the pressure core 24 so that the pressure core 24 is subjected to uniform force.

[0064] The pressing core 24 is spaced apart from the shaping blade block 23 and avoids the inclined punch 312 .

[0065] In some embodiments, see Figure 6 and Figure 7The core support 12 includes a core body 121 and an insert 122 both connected to the lower die base 11. The core body 121 is integrally formed with the lower die base 11, and the insert 122 is fixedly connected to the upper die base 21 and protrudes from the edge of the core body 121 along the second direction. The insert 122 is provided with an avoidance groove 1221. When the hook punch assembly 31 is in the hook punching position, the inclined punch 312 is inserted into the avoidance groove 1221. The avoidance groove 1221 can achieve avoidance and guidance of the inclined punch 312. The insert 122 protrudes from the edge of the core body 121 to improve the reliability of the insert 122 and reduce the possibility of damage to the core support 12 during the hook punching process of the hook punch assembly 31. At the same time, if the insert 122 is damaged, only the insert 122 can be repaired and replaced, and there is no need to repair and replace the core body 121, thereby reducing the cost of repair and replacement.

[0066] The core body 121 and the lower mold base 11 can be integrally formed by injection molding, and the insert 122 can be fixedly connected to the upper mold base 21 by screws for easy replacement.

[0067] In some embodiments, see Figure 1 and Figure 6 The upper die assembly 20 further includes an upper positioning column 27 mounted on the upper die base 21, and the lower die assembly 10 further includes a lower positioning column 13 mounted on the lower die base 11. When the upper die assembly 20 and the lower die assembly 10 are molded together, the upper positioning column 27 and the lower positioning column 13 can be aligned and sleeved, so that the upper positioning column 27 and the lower positioning column 13 can achieve the alignment accuracy when the upper die assembly 20 and the lower die assembly 10 are molded together, thereby improving the accuracy of shaping and hooking.

[0068] In some embodiments, see Figure 1 and Figure 6 The upper mold assembly 20 further includes an upper shaping module 50 mounted on the upper mounting surface 2101 of the upper mold base 21, and the lower mold assembly 10 further includes a lower shaping module 40 mounted on the lower mounting surface 1101 of the lower mold base 11, and the upper shaping module 50 and the lower shaping module 40 are directly opposite to each other. The hood outer panel can be placed on the lower shaping module 40, and when the upper mold assembly 20 is moved downward to close the mold with the lower mold assembly 10, the upper shaping module 50 and the lower shaping module 40 can realize the shaping of the hood outer panel, so that the hook punch shaping mold can realize the shaping of the hood inner panel and the hood outer panel at the same time.

[0069] The above are only some specific embodiments of the utility model, which only specifically describe the technical principles of the utility model. These descriptions are only for explaining the principles of the utility model and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model, and other specific implementation methods of the utility model that can be associated with the technicians in this field without creative work, should be included in the protection scope of the utility model.

Claims

1. A hook, punch and shape forming die, used for hooking, punching and shaping of sheet materials, characterized in that: include: A lower die assembly, comprising a lower die die base and a support core installed on the lower die die base; The upper die assembly comprises an upper die base, a supporting rib and a shaping knife block, wherein the supporting rib is annular and is mounted on the upper die base, the supporting rib is provided with a mounting hole, and the mounting hole passes through the inner annular surface and the outer annular surface of the supporting rib, and the shaping knife block is mounted on the side of the supporting rib facing away from the upper die base, and the shaping knife block is used to extrude the sheet material together with the supporting core when the upper die assembly and the lower die assembly are clamped in a first direction, so as to shape the sheet material; The hook punch die set includes a hook punch component, which is slidably connected to the upper die base and penetrates the mounting hole. The hook punch component is used to slide from a starting position toward a hook punch position relative to the upper die base along a second direction perpendicular to the first direction when the upper die die set is combined with the lower die along a first direction, so as to punch a through hole in the sheet material.

2. The hook punching and shaping die according to claim 1, characterized in that: The hook punch assembly includes an inclined wedge slider slidably connected to the upper die base and penetrated through the mounting hole, and an inclined punch connected to the slider and located on the inner annular surface side of the support rib. The inclined punch is inclined toward the outer annular surface side of the support rib and can punch a through hole in the sheet material when the upper die assembly is combined with the lower die assembly along a first direction.

3. The hook punching and shaping die according to claim 2, characterized in that: The upper die base also includes a plurality of flat guide plates connected to the upper die base, a slideway is formed between the flat guide plates and the upper die base, and the inclined wedge slider is slidably connected to the slideway.

4. The hook punching and shaping die according to claim 2, characterized in that: The supporting rib has a supporting surface facing away from the upper die base, the hole wall of the mounting hole is provided with an opening penetrating to the supporting surface, the shaping knife block is connected to the supporting surface and covers the opening, the inclined wedge slider is provided with a strip hole, the strip hole extends along the second direction, the hole wall of the mounting hole is also provided with a guide ridge protruding toward the opening, the guide ridge is penetrated in the strip hole, and the inclined wedge slider is slidably connected to the guide ridge through the strip hole.

5. The hook punching and shaping die according to claim 4, characterized in that: The upper die assembly also includes a limiting pin, which is passed through the strip hole and is used to limit the inclined wedge slider from separating from the upper die seat along the first direction.

6. The hook punching and shaping die according to claim 4, characterized in that: The hook punch assembly also includes a guide slider connected to the inclined wedge slider and located on the outer annular surface side of the support rib, and the hook punch die group also includes a guide drive block installed on the lower die base, the guide drive block has a guide surface, and the guide slider has a driven inclined surface. The guide surface, the driven inclined surface and the inclined punch all extend along a third direction. When the upper die die group is combined with the lower die die along a first direction, the driven inclined surface abuts against the guide surface and slides along the third direction relative to the guide surface. The third direction forms an acute angle with the first direction and also forms an acute angle with the second direction.

7. The hook punching and shaping die according to claim 6, characterized in that: The hook-punch assembly also includes a return guide connected to the guide slider. When the hook-punch assembly is in the starting position, the guide drive block is disengaged from the return guide. When the hook-punch assembly moves between the starting position and the hook-punch position, the guide drive block is slidably connected to the return guide.

8. The hook punching and shaping die according to any one of claims 1 to 7, characterized in that: The hook punch die set also includes a reset member connected between the upper die base and the hook punch assembly, and the reset member is used to apply a reset force opposite to the second direction to the hook punch assembly when the hook punch assembly slides toward the second direction.

9. The hook punching and shaping die according to any one of claims 1 to 7, characterized in that: The support core has a lower die surface and a lower die flange surface both facing away from the lower die die seat, the lower die flange surface is arranged around the lower die surface, the upper die die assembly also includes a pressure core and an elastic member, the pressure core is connected to the upper die die seat through the elastic member, the pressure core has an upper die surface facing away from the upper die die seat, the shaping knife block is arranged around the pressure core and has an upper die flange surface, the pressure core can be moved between a first position where the upper die surface is away from the upper die flange surface and a second position where the upper die surface is close to the upper die flange surface through the elastic deformation of the elastic member, the upper die surface faces the lower die surface, and is used to When the upper die seat and the lower die seat are at a first distance, the main body of the sheet material is extruded and shaped together; the upper die flange surface faces the lower die flange surface, and is used to extrude and shape the flange portion of the sheet material surrounding the main body when the upper die seat and the lower die seat are at a second distance; when the upper die assembly is combined with the lower die assembly along a first direction, the pressure core can be moved from the first position to the second position under the push of the main body; the distance between the upper die seat and the lower die seat is the second distance, wherein the first distance is greater than the second distance.

10. The hook punching and shaping die according to any one of claims 2 to 7, characterized in that: The core support includes a core body and an insert both connected to the lower die base, the core body and the lower die base are integrally formed, the insert is fixedly connected to the upper die base and protrudes from the edge of the core body along the second direction, the insert is provided with an avoidance groove, and when the hook punch assembly is in the hook punch position, the inclined punch is inserted into the avoidance groove.

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