CN213033403U - Punching die for double-cambered-surface hollow part - Google Patents

Abstract

The utility model discloses a hollow piece cut-out press of two arcwall faces, this hollow piece cut-out press of two arcwall faces includes the lower mould and goes up the mould, the lower mould includes the die holder, take off the flitch down, first edge of a knife core, second edge of a knife core, first slider and second slider, it includes and takes off the flitch on with taking off the corresponding setting of flitch down to go up the mould, take off the material piece corresponding to first edge of a knife core and second edge of a knife core fixed set up take off the first piece of taking off and the second of flitch on taking off and take off the material piece respectively, take off the first die-cut sword of flitch and first piece of taking off and take off the second die-cut sword of piece on corresponding to first edge of a knife core is vertical to be worn to locate to take off. The utility model discloses a hollow piece cut-out press of double arcs face realizes that a mould accomplishes the inside and outside cambered surface of hollow piece twice process of punching a hole simultaneously, and punching press easy operation convenient and fast effectively improves production efficiency, reduces mould and human cost, satisfies the extensive mass production demand of enterprise, is fit for popularizing and applying.

Description

Punching die for double-cambered-surface hollow part

Technical Field

The utility model belongs to the technical field of stamping die, especially, relate to a hollow spare cut-out press of double arcs face.

Background

The car can be provided with a towing hook at the head or tail of the car, so that the car can be conveniently towed and dragged when being trapped in a pit or anchored, or other cars can be rescued; generally, a towing hook hole is formed in the bumper, and the towing hook is mounted on the bumper through the towing hook hole, so that the bumper has good universality. However, the bumper is usually a double-cambered-surface hollow part, the wall thickness of the material is only 5mm, the lower die cutting edge is unsupported and easy to deform, so that the stamping difficulty of the towing hook hole of the bumper is high, the towing hook hole needs to be machined on the inner cambered surface and the outer cambered surface of the bumper, the coaxiality is also guaranteed, the machining process is complicated, the production efficiency is low, and the requirement of mass production cannot be met. At present, two sets of stamping dies are used for stamping the towing hook holes of the inner arc surface and the outer arc surface of the bumper twice, two workers are required to operate the towing hook holes, the production cost is high, the coaxial position precision of the towing hook mounting holes of the inner arc surface and the outer arc surface of the bumper is difficult to guarantee, and the towing hook holes are not favorable for reliable use of the bumper.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a hollow piece cut-out press of double arcs face, inside and outside cambered surface punches a hole the benchmark unanimously, and the axiality is high, realizes that a mould accomplishes the twice process of the inside and outside cambered surface processing of punching a hole of hollow piece simultaneously, and hollow piece non-deformable guarantees the reliable use of hollow piece moreover, punching press easy operation, and production efficiency is high, and the practicality is strong.

In order to achieve the purpose, the utility model provides a hollow piece punching die with double cambered surfaces, which comprises a lower die and an upper die and is characterized in that the lower die comprises a lower die holder, a lower stripper plate, a first knife edge core plate, a second knife edge core plate, a first slider and a second slider, wherein the lower stripper plate is fixedly arranged at the top of the lower die holder; the first sliding block is arranged at the top of the lower stripper plate corresponding to the first knife edge core plate and can slide to the position below the first knife edge core plate relative to the lower stripper plate, and the first sliding block is suitable for supporting the inner arc of the hollow piece; the second sliding block is arranged at the top of the lower stripper plate corresponding to the second knife edge core plate and can slide to the position below the second knife edge core plate relative to the lower stripper plate, and the second sliding block is suitable for supporting the outer arc of the hollow part; the upper die comprises an upper stripper plate arranged corresponding to the lower stripper plate, a first stripper block and a second stripper block which are respectively and fixedly arranged on the upper stripper plate corresponding to the first knife edge core plate and the second knife edge core plate, a first punching cutter vertically penetrating the upper stripper plate and the first stripper block corresponding to the first knife edge core plate, and a second punching cutter vertically penetrating the upper stripper plate and the second stripper block corresponding to the second knife edge core plate, wherein the bottom of the first stripper block is matched with the outer arc shape of the hollow piece, and the bottom of the second stripper block is matched with the inner arc shape of the hollow piece; the upper die can press the lower die downwards, the first stripping block compresses the outer arc of the hollow part to be matched with the first sliding block to clamp the hollow part, the second stripping block compresses the inner arc of the hollow part to be matched with the second sliding block to clamp the hollow part, and the first punching knife and the second punching knife respectively penetrate through the first stripping block and the second stripping block to punch the outer arc and the inner arc of the hollow part.

In one example, one side of the end part of the hollow part is provided with a positioning gap, the double-cambered-surface hollow part punching die further comprises a positioning mechanism, the positioning mechanism comprises a positioning block and a driving device, the shape and the size of the positioning block are matched with those of the positioning gap, and the driving device is in transmission connection with the positioning block; two positioning mechanism correspond to respectively first edge of a knife core with second edge of a knife core set up in the lower mould, and be located respectively first edge of a knife core with the installation of second edge of a knife core is close to during the hollow spare one side of location breach, drive arrangement can drive the locating piece for lower mould translation move to with location breach cooperation joint, in order to right the length direction position of hollow spare is fixed a position.

In one example, the positioning mechanism further comprises a guide block, the guide block is fixedly arranged at the top of the lower stripper plate, and the top of the guide block is provided with a guide groove extending along the movement direction of the positioning block; the bottom of the positioning block is provided with a guide convex rib, and the guide convex rib is in sliding connection with the guide groove so as to enable the positioning block to be slidably supported on the top of the guide block.

In one example, the lower die further comprises outer arc positioning pieces, and the outer arc positioning pieces are used for respectively clamping two sides of an outer arc of the hollow piece so as to position the position of the hollow piece in the width direction; the lower die further comprises inner arc positioning pieces, and the inner arc positioning pieces are used for clamping two sides of the inner arc of the hollow piece respectively so as to position the width direction of the hollow piece.

In one example, the outer arc positioning piece and the inner arc positioning piece are in an 'L' shape, and the outer arc positioning piece and the inner arc positioning piece are fixedly connected to the lower stripper plate or the lower die holder through the bottom edge of the 'L' shape; and the bottom edge is provided with a waist-shaped hole, and the outer arc positioning piece and the inner arc positioning piece can be adjusted through the waist-shaped hole to be positioned at the lower stripper plate or the mounting position on the lower die holder.

In one example, the lower die further comprises a first support plate, a first support block, a second support plate and a second support block; the first supporting plate is fixedly arranged at the top of the lower die holder and is arranged on one side, away from the first knife edge core plate, of the lower stripper plate corresponding to the first knife edge core plate, and the first supporting block is arranged at the top of the first supporting plate and used for supporting the inner arc of the hollow piece; the second supporting plate is fixedly arranged at the bottom of the lower die base, arranged on one side of the lower stripper plate away from the second knife edge core plate corresponding to the second knife edge core plate, and arranged at the top of the second supporting plate and used for supporting the outer arc of the hollow part.

In one example, the lower die further includes a first fixing seat and a second fixing seat, the first fixing seat and the second fixing seat are adjacently and fixedly arranged at the top of the lower die base at intervals and are located on the same side of the lower stripper plate, one end of the first knife edge core plate is fixedly connected to the first fixing seat, the other end of the first knife edge core plate obliquely extends upwards to a position right above the lower stripper plate, one end of the second knife edge core plate is fixedly connected to the second fixing seat, and the other end of the second knife edge core plate obliquely extends downwards to a position right above the lower stripper plate.

In one example, the lower die further includes a first sliding limiting block and a second sliding limiting block, the first sliding limiting blocks are fixedly disposed on the top of the lower stripper plate and symmetrically disposed on two opposite sides of the first slider perpendicular to the sliding direction, and the first sliding limiting blocks extend along the sliding direction of the first slider to guide and limit the sliding of the first slider relative to the lower stripper plate; the two second sliding limiting blocks are fixedly arranged at the top of the lower stripper plate and symmetrically arranged at two opposite sides of the second slider perpendicular to the sliding direction, and extend along the sliding direction of the second slider so as to guide and limit the sliding of the second slider relative to the lower stripper plate.

In one example, a side of the first slider, which is far away from the first blade core plate, is provided with a first slider inclined surface, and the upper side of the first slider inclined surface inclines towards the first blade core plate; a second slide block inclined plane is arranged on one side, far away from the second knife edge core plate, of the second slide block, and the upper side of the second slide block inclined plane is inclined towards the second knife edge core plate; the upper die further comprises two cutter inserting blocks which are respectively arranged corresponding to the first sliding block and the second sliding block, the two cutter inserting blocks are respectively positioned on one side of the first sliding block, which is far away from the first cutter edge core plate, and one side of the second sliding block, which is far away from the second cutter edge core plate, the cutter inserting blocks are provided with cutter inserting inclined planes matched with the first sliding block inclined plane and the second sliding block inclined plane, and the cutter inserting inclined planes of the two cutter inserting blocks respectively face the first sliding block inclined plane and the second sliding block inclined plane; the upper die presses the lower die downwards, and the slotting tool inclined planes of the two slotting tool blocks can be driven to be respectively matched with and in sliding contact with the first sliding block inclined plane and the second sliding block inclined plane so as to drive the first sliding block and the second sliding block to slide relative to the lower stripper plate.

In one example, the lower die further includes a plurality of nitrogen springs, the plurality of nitrogen springs are disposed on the lower stripper plate corresponding to the first slider and the second slider, and are respectively connected to the first slider along a sliding direction of the first slider or the second slider along a sliding direction of the second slider, and the nitrogen springs are used for sliding buffering and returning of the first slider and the second slider.

1. The first knife edge core plate and the second knife edge core plate are inserted into the hollow piece to be sleeved with the hollow piece, so that the inner part and the punching surface of the hollow piece can be effectively supported, the hollow piece is prevented from being collapsed and deformed, and the processing quality and the reliable use of the hollow piece are effectively ensured; the first sliding block and the first stripping block as well as the second sliding block and the second stripping block are respectively matched to clamp the inner cambered surface and the outer cambered surface of the hollow part, so that the coaxiality and the size consistency of the inner cambered surface and the outer cambered surface of the hollow part are effectively ensured, the hollow part is accurately positioned, the punching reference of the inner cambered surface and the outer cambered surface is consistent, the coaxiality is high, the punching position of the hollow part is ensured, the punching precision is improved, and the hollow part is convenient to install and use reliably; through setting up first die-cutting knife and second die-cutting knife, the process of punching a hole of two products can be accomplished simultaneously in punching press, realizes that a mould accomplishes the twice process of the interior cambered surface punching processing of hollow spare simultaneously, punching press easy operation convenient and fast shortens production man-hour, effectively improves production efficiency, saves mould quantity, reduces mould and human cost, improves economic benefits, satisfies the extensive mass production demand of enterprise, and the practicality is strong, is fit for popularizing and applying.

2. The positioning mechanism is used for positioning the length direction of the hollow part, the positioning accuracy is high, the positioning reference of the inner cambered surface and the outer cambered surface is consistent, the position of the hollow part is prevented from being deviated in the machining process, the punching position of the hollow part is ensured, the punching accuracy is improved, the punching precision and the machining quality of the hollow part are ensured, the practicability is high, and the hollow part is suitable for popularization and application.

3. Fix spacingly through the width direction of inner arc setting element and outer arc setting element to the hollow member, prevent that the hollow member from taking place the skew in the course of working, guarantee the machining precision that punches a hole of hollow member, further improve product quality, the practicality is strong, is fit for popularizing and applying.

4. First slider takes off the material piece with first and second slider and second and takes off the one end that the material piece cooperates the hollow spare of centre gripping respectively, the inner arc of the hollow spare other end is supported to first backup pad and first supporting shoe, the outer arc of the hollow spare other end is supported to second backup pad and second supporting shoe to the overall structure of the hollow spare of stable support, it adds the overall structure stability man-hour to guarantee the hollow spare, has improved the machining precision, guarantee the quality of punching a hole of hollow spare, therefore, the clothes hanger is strong in practicability, and is suitable for popularization and application.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic perspective view of a double cambered surface hollow part punching die of the present invention;

fig. 2 is a schematic perspective view of the lower mold of the present invention;

fig. 3 is a bottom view of a partial structure of the lower mold of the present invention;

fig. 4 is a schematic perspective view of the upper mold of the present invention;

fig. 5 is a schematic perspective view of the positioning mechanism of the present invention;

fig. 6 is a schematic perspective view of another view angle of the positioning mechanism of the present invention;

fig. 7 is a schematic perspective view of the first slider of the present invention;

fig. 8 is a schematic perspective view of a second slide block according to the present invention;

fig. 9 is a schematic perspective view of a hollow member.

In the figure, 1-lower die, 10-nitrogen spring, 11-lower die holder, 12-lower stripper plate, 13 a-first knife edge core plate, 13 b-second knife edge core plate, 14 a-first slide block, 141 a-first slide block inclined plane, 14 b-second slide block, 141 b-second slide block inclined plane, 15 a-outer arc positioning piece, 15 b-inner arc positioning piece, 16 a-first supporting plate, 16 b-second supporting plate, 17 a-first supporting block, 17 b-second supporting block, 18 a-first sliding limiting block, 18 b-second sliding limiting block, 19 a-first fixed seat, 19 b-second fixed seat, 2-upper die, 21-upper stripper plate, 22 a-first stripper block, 22 b-second stripper block, 23 a-first punching cutter, 23 b-a second punching cutter, 24-a cutter inserting block, 241-a cutter inserting inclined plane, 3-a positioning mechanism, 31-a positioning block, 311-a guide convex rib, 32-a driving device, 33-a guide block, 331-a guide groove, 100-a bumper punching unhooking hole die, 200-a hollow part and 201-a positioning notch.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

As shown in fig. 1 to 9, an embodiment of the present invention provides a punching die 100 for a double cambered surface hollow part, which includes a lower die 1 and an upper die 2; the lower die 1 comprises a lower die base 11, a lower stripper plate 12, a first knife edge core plate 13a, a second knife edge core plate 13b, a first slider 14a and a second slider 14b, and the lower stripper plate 12 is fixedly arranged at the top of the lower die base 11; the first knife edge core plate 13a and the second knife edge core plate 13b are adjacently arranged above the lower stripper plate 12 at intervals and are positioned at the same side of the lower stripper plate 12, and the first knife edge core plate 13a and the second knife edge core plate 13b can be inserted into the hollow piece 200 from the end opening of the hollow piece 200, and the outer arc and the inner arc of the hollow piece 200 are respectively upward; the first slider 14a is arranged at the top of the lower stripper plate 12 corresponding to the first knife edge core plate 13a and can slide relative to the lower stripper plate 12 to the position below the first knife edge core plate 13a, and the first slider 14a is suitable for supporting the inner arc of the hollow piece 200; the second sliding block 14b is arranged at the top of the lower stripper plate 12 corresponding to the second knife-edge core plate 13b and can slide to the lower part of the second knife-edge core plate 13b relative to the lower stripper plate 12, and the second sliding block 14b is suitable for supporting the outer arc of the hollow piece 200. The upper die 2 comprises an upper stripper plate 21 arranged corresponding to the lower stripper plate 12, a first stripper block 22a and a second stripper block 22b fixedly arranged at the bottom of the upper stripper plate 21 corresponding to the first knife edge core plate 13a and the second knife edge core plate 13b respectively, a first punching cutter 23a vertically penetrating the upper stripper plate 21 and the first stripper block 22a corresponding to the first knife edge core plate 13a, and a second punching cutter 23b vertically penetrating the upper stripper plate 21 and the second stripper block 22b corresponding to the second knife edge core plate 13b, wherein the bottom of the first stripper block 22a is matched with the outer arc shape of the hollow piece 200, and the bottom of the second stripper block 22b is matched with the inner arc shape of the hollow piece 200; the upper die 2 can press down the lower die 1, the first stripping block 22a presses the outer arc of the hollow member 200 to cooperate with the first slider 14a to clamp the hollow member 200, the second stripping block 14b presses the inner arc of the hollow member 200 to cooperate with the second slider 14b to clamp the hollow member 200, and the first punching cutter 23a and the second punching cutter 23b punch the outer arc and the inner arc of the hollow member 200 through the first stripping block 22a and the second stripping block 22b, respectively.

The first knife edge core plate 13a and the second knife edge core plate 13b are inserted into the hollow piece 200 to be sleeved with the hollow piece 200, so that the inner part and the punching surface of the hollow piece 200 can be effectively supported, the hollow piece 200 is prevented from being collapsed and deformed, and the processing quality and the reliable use of the hollow piece 200 are effectively ensured; the first slider 14a and the first stripping block 22a, and the second slider 14b and the second stripping block 22b are used for respectively clamping the inner cambered surface and the outer cambered surface of the hollow part 200 in a matched manner, so that the coaxiality and the size consistency of the inner cambered surface and the outer cambered surface of the hollow part 200 are effectively ensured, the hollow part 200 is accurately positioned, the punching reference of the inner cambered surface and the punching reference of the outer cambered surface are consistent, the coaxiality is high, the punching position of the hollow part 200 is ensured, the punching accuracy is improved, and the hollow part 200 is convenient to install and use reliably; through setting up first die-cutting knife 23a and second die-cutting knife 23b, the process of punching a hole of two products can be accomplished simultaneously in punching press, realize that a mould accomplishes the twice process of the processing of punching a hole of the interior cambered surface of hollow member 200 simultaneously, punching press easy operation convenient and fast shortens production man-hour, effectively improve production efficiency, save mould quantity, reduce mould and human cost, improve economic benefits, satisfy the extensive mass production demand of enterprise, therefore, the clothes hanger is strong in practicability, and is suitable for popularization and application. In one embodiment, the hollow member 200 is a bumper, and the first and second punching blades 23a and 23b punch outer and inner arcs of the bumper into towing hook holes, respectively; the top shape of the first slider 14a is adapted to the inner arc shape of the bumper, and the top shape of the second slider 14b is adapted to the outer arc shape of the bumper.

Specifically, the lower die 1 further includes a first fixing seat 19a and a second fixing seat 19b, the first fixing seat 19a and the second fixing seat 19b are adjacently and fixedly arranged at the top of the lower die base 11 at intervals and are located on the same side of the lower stripper plate 12, one end of the first knife-edge core plate 13a is fixedly connected to the first fixing seat 19a, the other end of the first knife-edge core plate extends obliquely upward to a position right above the lower stripper plate 12, one end of the second knife-edge core plate 13b is fixedly connected to the second fixing seat 19b, and the other end of the second knife-edge core plate extends obliquely downward to a position right above the lower. The first knife edge core plate 13a and the second knife edge core plate 13b are opposite in extension direction, so that the first knife edge core plate 13a and the second knife edge core plate 13b are suitable for supporting the outer arc and the inner arc of the hollow piece 200 respectively, the hollow piece 200 is effectively prevented from being misplaced, the processing quality is guaranteed, the use is simple and convenient, the processing efficiency is improved, and the practicability is high.

Specifically, the hollow member 200 has a positioning notch 201 at one side of the end portion. The double-cambered-surface hollow part punching die 100 further comprises a positioning mechanism 3, the positioning mechanism 3 comprises a positioning block 31 and a driving device 32, the shape and the size of the positioning block 31 are matched with those of the positioning notch 201, and the driving device 32 is in transmission connection with the positioning block 31; the two positioning mechanisms 3 are respectively arranged on the lower die 1 corresponding to the first knife edge core plate 13a and the second knife edge core plate 13b and are respectively positioned on one side, close to the positioning gap 201, of the first knife edge core plate 13a and the second knife edge core plate 13b when the hollow piece 200 is installed, and the driving device 32 can drive the positioning block 31 to move in a translation mode relative to the lower die 1 to be matched and clamped with the positioning gap 201 so as to position the position of the hollow piece 200 in the length direction. Through the length direction position location of positioning mechanism 3 to hollow member 200, the location precision is high, and interior outer cambered surface location benchmark is unanimous, prevents to add the position emergence skew of hollow member 200 man-hour, guarantees the punching press position of hollow member 200, improves the precision of punching a hole, guarantees the precision and the processingquality of punching a hole of hollow member 200, and the practicality is strong, is fit for popularizing and applying. In one embodiment, the drive device 32 is a pneumatic cylinder.

Specifically, the positioning mechanism 3 further includes a guide block 33, the guide block 33 is fixedly disposed on the top of the lower stripper plate 12, and a guide groove 331 extending along the moving direction of the positioning block 31 is disposed on the top of the guide block 33; the bottom of the positioning block 31 is provided with a guiding rib 311, and the guiding rib 311 is slidably connected with the guiding groove 331 so as to slidably support the positioning block 31 on the top of the guiding block 33. Through setting up guide block 33, the protruding muscle 311 of direction can follow guide way 331 sliding motion, can lead spacing for the translational motion of lower mould 1 to locating piece 31, prevent that the skew sliding direction of locating piece 31 from rocking with taking place, locating piece 31 translational motion is steady, the direction is accurate, guarantee locating piece 31 and the quick accurate joint of location breach 201, guarantee the quick accurate location to hollow member 200 length direction position, guarantee the quality of punching a hole, therefore, the clothes hanger is strong in practicability, and is suitable for popularization and application.

Specifically, the lower die 1 further comprises outer arc positioning pieces 15a, and the outer arc positioning pieces 15a are used for respectively clamping two sides of an outer arc of the hollow piece 200 so as to position the position of the hollow piece 200 in the width direction; the lower mold 1 further includes inner arc positioning pieces 15b, and the plurality of inner arc positioning pieces 15b are used to clamp both sides of the inner arc of the hollow member 200, respectively, to position the widthwise position of the hollow member 200. Fix spacingly through the width direction to hollow member 200, prevent that hollow member 200 from taking place the skew in the course of working, guarantee the machining precision that punches a hole of hollow member 200, further improve product quality, the practicality is strong, is fit for popularizing and applying.

Specifically, the outer arc positioning piece 15a and the inner arc positioning piece 15b are L-shaped, and the outer arc positioning piece 15a and the inner arc positioning piece 15b are fixedly connected to the lower stripper plate 12 or the lower die holder 11 through the bottom edge of the L-shape; and the bottom edge is provided with a kidney-shaped hole, and the installation positions of the outer arc positioning piece 15a and the inner arc positioning piece 15b on the lower stripper plate 12 or the lower die holder 11 can be adjusted through the kidney-shaped hole. Through setting up waist type hole at outer arc setting element 15a and inner arc setting element 15 b's base, can adjust outer arc setting element 15a and inner arc location 15 b's mounted position, make outer arc setting element 15a and inner arc location 15b can be near outer arc and the inner arc of hollow member 200, centre gripping location effect is better, positioning accuracy is higher, and can adjust the clamping position of the hollow member 200 of centre gripping according to customer processing demand, be suitable for the hollow member 200 of the different width size of centre gripping, application scope is wide, therefore, the clothes hanger is strong in practicability, and is suitable for popularization and application.

Specifically, the lower die 1 further includes a first support plate 16a, a first support block 17a, a second support plate 16b, and a second support block 17 b; the first supporting plate 16a is fixedly arranged at the top of the lower die holder 11 and is arranged at one side of the lower stripper plate 12 away from the first knife edge core plate 13a corresponding to the first knife edge core plate 13a, and the first supporting block 17a is arranged at the top of the first supporting plate 16a and is used for supporting the inner arc of the hollow piece 200; the second supporting plate 16b is fixedly arranged at the bottom of the lower die holder 11, and is arranged at one side of the lower stripper plate 12 away from the second knife-edge core plate 13b corresponding to the second knife-edge core plate 13b, and the second supporting block 17b is arranged at the top of the second supporting plate 16b and is used for supporting the outer arc of the hollow member 200. The first slider 14a and the first stripping block 22a and the second slider 14b and the second stripping block 22b are respectively matched with one end of the clamping hollow part 200, the first supporting plate 16a and the first supporting block 17a support the inner arc at the other end of the hollow part 200, and the second supporting plate 16b and the second supporting block 17b support the outer arc at the other end of the hollow part 200, so that the whole structure of the hollow part 200 is stably supported, the whole structure is stable when the hollow part 200 is processed, the processing precision is improved, the punching quality of the hollow part 200 is ensured, the practicability is high, and the hollow part is suitable for popularization and application.

Specifically, the lower die 1 further includes a first sliding limiting block 18a and a second sliding limiting block 18b, the two first sliding limiting blocks 18a are fixedly disposed on the top of the lower stripper plate 12 and symmetrically disposed on two opposite sides of the first slider 14a perpendicular to the sliding direction, and the first sliding limiting blocks 18a extend along the sliding direction of the first slider 14a to guide and limit the sliding of the first slider 14a relative to the lower stripper plate 12; the two second sliding stoppers 18b are fixedly disposed on the top of the lower stripper plate 12 and symmetrically disposed on two opposite sides of the second slider 14b perpendicular to the sliding direction, and the second sliding stoppers 18b extend along the sliding direction of the second slider 14b to guide and limit the sliding of the second slider 14b relative to the lower stripper plate 12. Through setting up first slip stopper 18a and second slip stopper 18b, inject the slip direction of first slider 14a and second slider 14b, and prevent that first slider 14a and second slider 14b from breaking away from the top of taking off flitch 12 down, first slider 14a and second slider 14b are for taking off flitch 12 translation slip steadily down, be difficult for rocking and skew slip direction, further guarantee the punching precision and the processingquality of hollow member 200, improve processing stability and product quality, therefore, the clothes hanger is strong in practicability, and is suitable for popularization and application.

In a specific embodiment, opposite sides of the first slider 14a perpendicular to the sliding direction are symmetrically provided with first sliding ribs in a protruding manner, and the first sliding ribs extend along the sliding direction of the first slider 14 a; the first sliding limiting blocks 18a comprise first guide portions and first limiting blocking ribs protruding out of the first guide portions, the two first sliding limiting blocks 18a are fixedly connected to the lower stripper plate 12 through the first guide portions and are symmetrically arranged on two sides of the first slider 14a in a direction parallel to the sliding direction of the first slider 14a, the two first guide portions are tightly attached to two opposite sides of the two first sliding protruding ribs of the first slider 14a respectively, and the two first limiting blocking ribs face the first slider and are tightly attached to the tops of the two first sliding protruding ribs respectively. The two opposite sides of the second sliding block 14b perpendicular to the sliding direction are symmetrically provided with second sliding convex ribs in a protruding manner, and the second sliding convex ribs extend along the sliding direction of the second sliding block 14 b; the second sliding limiting block 18b comprises a second guide part and a second limiting blocking rib protruding out of the second guide part, the two second sliding limiting blocks 18b are fixedly connected to the lower stripper plate 12 through the second guide part and are symmetrically arranged on two sides of the second slider 14b in a direction parallel to the sliding direction of the second slider 14b, two second guide parts are tightly attached to two opposite sides of the two second sliding protruding ribs of the second slider 14b respectively, and the two second limiting blocking ribs face the second slider and are tightly attached to the tops of the two second sliding protruding ribs respectively.

Specifically, a side of the first slider 14a remote from the first blade core plate 13a is provided with a first slider inclined surface 141a, an upper side of the first slider inclined surface 141a being inclined toward the first blade core plate 13 a; a second slider inclined surface 141b is provided on a side of the second slider 14b remote from the second knife edge core plate 13b, and an upper side of the second slider inclined surface 141b is inclined toward the second knife edge core plate 13 b. The upper die 2 further comprises two insert blocks 24 respectively corresponding to the first slider 14a and the second slider 14b, the two insert blocks 24 are respectively located on one side of the first slider 14a far away from the first knife edge core plate 13a and one side of the second slider 14b far away from the second knife edge core plate 13b, the insert blocks 24 are provided with insert inclined surfaces 241 matched with the first slider inclined surfaces 141a and the second slider inclined surfaces 141b, and the insert inclined surfaces 241 of the two insert blocks 24 respectively face the first slider inclined surfaces 141a and the second slider inclined surfaces 141 b. The upper die 2 descends to press the lower die 1, and can drive the slotting tool inclined planes 241 of the two slotting tool blocks 24 to be respectively matched and in sliding contact with the first slider inclined plane 141a and the second slider inclined plane 141b so as to drive the first slider 14a and the second slider 14b to slide relative to the lower stripper plate 12. Through setting up the first slider 14a of broach piece 24 drive and second slider 14b for taking off flitch 12 sliding motion down, can realize the simultaneous movement of first slider 14a and second slider 14b, simple structure, operation convenient to use, the practicality is strong, is fit for popularizing and applying.

Specifically, the lower die 1 further includes a nitrogen spring 10, a plurality of nitrogen springs 10 are disposed on the lower stripper plate 12 corresponding to the first slider 14a and the second slider 14b, and the plurality of nitrogen springs 10 are respectively connected to the first slider 14a along a sliding direction of the first slider 14a or connected to the second slider 14b along a sliding direction of the second slider 14b, and the nitrogen springs 10 are used for sliding buffering and returning of the first slider 14a and the second slider 14 b. By arranging the nitrogen spring 10, the two cutter inserting blocks 24 can be compressed to play a sliding buffering role when driving the first sliding block 14a and the second sliding block 14b to move, so that the hollow part 200 is prevented from being damaged by too high sliding speed of the first sliding block 14a and the second sliding block 14b due to impact, the rejection rate is reduced, and the first sliding block 14a and the second sliding block 14b move stably, are not easy to damage and have longer service life; when the cutter inserting block 24 moves upwards after punching is completed, the first sliding block 14a and the second sliding block 14b are subjected to the reaction force of compression of the nitrogen spring 10, the nitrogen spring 10 drives the first sliding block 14a and the second sliding block 14b to slide to the initial positions far away from the first cutter edge core plate 13a and the second cutter edge core plate 13b relative to the lower stripper plate 12, and sliding return stroke of the first sliding block 14a and the second sliding block 14b is achieved.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A double-arc-surface hollow piece punching die comprises a lower die and an upper die and is characterized in that the lower die comprises a lower die base, a lower stripper plate, a first knife edge core plate, a second knife edge core plate, a first sliding block and a second sliding block, the lower stripper plate is fixedly arranged at the top of the lower die base, the first knife edge core plate and the second knife edge core plate are adjacently arranged above the lower stripper plate at intervals and are positioned at the same side of the lower stripper plate, the first knife edge core plate and the second knife edge core plate can be inserted into a hollow piece through an opening at the end part of the hollow piece, and the outer arc and the inner arc of the hollow piece are respectively upward; the first sliding block is arranged at the top of the lower stripper plate corresponding to the first knife edge core plate and can slide to the position below the first knife edge core plate relative to the lower stripper plate, and the first sliding block is suitable for supporting the inner arc of the hollow piece; the second sliding block is arranged at the top of the lower stripper plate corresponding to the second knife edge core plate and can slide to the position below the second knife edge core plate relative to the lower stripper plate, and the second sliding block is suitable for supporting the outer arc of the hollow part;

the upper die comprises an upper stripper plate arranged corresponding to the lower stripper plate, a first stripper block and a second stripper block which are respectively and fixedly arranged on the upper stripper plate corresponding to the first knife edge core plate and the second knife edge core plate, a first punching cutter vertically penetrating the upper stripper plate and the first stripper block corresponding to the first knife edge core plate, and a second punching cutter vertically penetrating the upper stripper plate and the second stripper block corresponding to the second knife edge core plate, wherein the bottom of the first stripper block is matched with the outer arc shape of the hollow piece, and the bottom of the second stripper block is matched with the inner arc shape of the hollow piece; the upper die can press the lower die downwards, the first stripping block compresses the outer arc of the hollow part to be matched with the first sliding block to clamp the hollow part, the second stripping block compresses the inner arc of the hollow part to be matched with the second sliding block to clamp the hollow part, and the first punching knife and the second punching knife respectively penetrate through the first stripping block and the second stripping block to punch the outer arc and the inner arc of the hollow part.

2. The double cambered surface hollow member punching die of claim 1, wherein a positioning notch is formed in one side of the end part of the hollow member, the double cambered surface hollow member punching die further comprises a positioning mechanism, the positioning mechanism comprises a positioning block and a driving device, the shape and the size of the positioning block are matched with those of the positioning notch, and the driving device is in transmission connection with the positioning block; two positioning mechanism correspond to respectively first edge of a knife core with second edge of a knife core set up in the lower mould, and be located respectively first edge of a knife core with the installation of second edge of a knife core is close to during the hollow spare one side of location breach, drive arrangement can drive the locating piece for lower mould translation move to with location breach cooperation joint, in order to right the length direction position of hollow spare is fixed a position.

3. The double cambered surface hollow part punching die according to claim 2, wherein the positioning mechanism further comprises a guide block, the guide block is fixedly arranged at the top of the lower stripper plate, and a guide groove extending along the movement direction of the positioning block is arranged at the top of the guide block; the bottom of the positioning block is provided with a guide convex rib, and the guide convex rib is in sliding connection with the guide groove so as to enable the positioning block to be slidably supported on the top of the guide block.

4. The double cambered surface hollow member punching die of claim 1, wherein the lower die further comprises outer arc positioning members, and the plurality of outer arc positioning members are used for respectively clamping two sides of the outer arc of the hollow member so as to position the width direction position of the hollow member;

the lower die further comprises inner arc positioning pieces, and the inner arc positioning pieces are used for clamping two sides of the inner arc of the hollow piece respectively so as to position the width direction of the hollow piece.

5. The double-cambered-surface hollow part punching die as claimed in claim 4, wherein the outer arc positioning piece and the inner arc positioning piece are L-shaped, and the outer arc positioning piece and the inner arc positioning piece are fixedly connected to the lower stripper plate or the lower die holder through the bottom edge of the L-shaped; and the bottom edge is provided with a waist-shaped hole, and the outer arc positioning piece and the inner arc positioning piece can be adjusted through the waist-shaped hole to be positioned at the lower stripper plate or the mounting position on the lower die holder.

6. The double cambered surface hollow member punching die of claim 1, wherein the lower die further comprises a first supporting plate, a first supporting block, a second supporting plate and a second supporting block;

the first supporting plate is fixedly arranged at the top of the lower die holder and is arranged on one side, away from the first knife edge core plate, of the lower stripper plate corresponding to the first knife edge core plate, and the first supporting block is arranged at the top of the first supporting plate and used for supporting the inner arc of the hollow piece;

the second supporting plate is fixedly arranged at the bottom of the lower die base, arranged on one side of the lower stripper plate away from the second knife edge core plate corresponding to the second knife edge core plate, and arranged at the top of the second supporting plate and used for supporting the outer arc of the hollow part.

7. The double-cambered-surface hollow part punching die of claim 1, wherein the lower die further comprises a first fixing seat and a second fixing seat, the first fixing seat and the second fixing seat are adjacently and fixedly arranged at the top of the lower die base at intervals and are positioned on the same side of the lower stripper plate, one end of the first knife edge core plate is fixedly connected to the first fixing seat, the other end of the first knife edge core plate obliquely extends upwards to a position right above the lower stripper plate, one end of the second knife edge core plate is fixedly connected to the second fixing seat, and the other end of the second knife edge core plate obliquely extends downwards to a position right above the lower stripper plate.

8. The double cambered surface hollow part punching die of any one of claims 1 to 7, wherein the lower die further comprises a first sliding limiting block and a second sliding limiting block, the first sliding limiting blocks are fixedly arranged at the top of the lower stripper plate and symmetrically arranged at two opposite sides of the first sliding block perpendicular to the sliding direction, and the first sliding limiting blocks extend along the sliding direction of the first sliding blocks so as to guide and limit the sliding of the first sliding blocks relative to the lower stripper plate; the two second sliding limiting blocks are fixedly arranged at the top of the lower stripper plate and symmetrically arranged at two opposite sides of the second slider perpendicular to the sliding direction, and extend along the sliding direction of the second slider so as to guide and limit the sliding of the second slider relative to the lower stripper plate.

9. The double cambered surface hollow member punching die of claim 8, wherein a side of the first slider remote from the first insert core plate is provided with a first slider inclined surface, and an upper side of the first slider inclined surface is inclined toward the first insert core plate; a second slide block inclined plane is arranged on one side, far away from the second knife edge core plate, of the second slide block, and the upper side of the second slide block inclined plane is inclined towards the second knife edge core plate;

the upper die further comprises two cutter inserting blocks which are respectively arranged corresponding to the first sliding block and the second sliding block, the two cutter inserting blocks are respectively positioned on one side of the first sliding block, which is far away from the first cutter edge core plate, and one side of the second sliding block, which is far away from the second cutter edge core plate, the cutter inserting blocks are provided with cutter inserting inclined planes matched with the first sliding block inclined plane and the second sliding block inclined plane, and the cutter inserting inclined planes of the two cutter inserting blocks respectively face the first sliding block inclined plane and the second sliding block inclined plane;

the upper die presses the lower die downwards, and the slotting tool inclined planes of the two slotting tool blocks can be driven to be respectively matched with and in sliding contact with the first sliding block inclined plane and the second sliding block inclined plane so as to drive the first sliding block and the second sliding block to slide relative to the lower stripper plate.

10. The double cambered surface hollow part punching die of claim 9, wherein the lower die further comprises nitrogen springs, a plurality of the nitrogen springs are arranged on the lower stripper plate corresponding to the first slide block and the second slide block, the nitrogen springs are respectively connected with the first slide block along the sliding direction of the first slide block or connected with the second slide block along the sliding direction of the second slide block, and the nitrogen springs are used for the sliding buffering and returning of the first slide block and the second slide block.

Images