CN211247976U

CN211247976U - Plate bending forming die

Info

Publication number: CN211247976U
Application number: CN201921826879.XU
Authority: CN
Inventors: 陆凯
Original assignee: Jiangsu Naomi New Material Technology Co ltd
Current assignee: Jiangsu Naomi New Material Technology Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-08-14
Anticipated expiration: 2029-10-28

Abstract

The utility model discloses a plate bending forming die, which belongs to the technical field of bending dies, and the key points of the technical scheme are that the plate bending forming die comprises an upper die and a lower die which are arranged in sequence along the vertical direction, wherein the upper die comprises a first connecting piece and an upper die core which are arranged vertically, and the bottom of the upper die core is a forming surface; the lower die comprises a lower die core and a second connecting piece which are vertically arranged, a forming groove into which the upper die core can be inserted is formed in the lower surface of the lower die core facing the upper die core, and the bottom surface of the forming groove is a forming surface; when the upper mold core extends into the forming groove, the forming surface of the upper mold core is away from the forming surface of the lower mold core by the wall thickness of the V-shaped bending piece, and the third plane is located between the side wall of the upper mold core and the side wall of the forming groove. The utility model is suitable for a V-arrangement piece of bending of one shot continuous molding has and carries out once fixing a position through same pair mould and bend out first arc surface and four third planes for the third plane is bent the location and is accurate, and the better effect of homonymy third plane parallel degree.

Description

Plate bending forming die

Technical Field

The utility model belongs to the technical field of the metal sheet mould technique of bending and specifically relates to a panel forming die that bends is related to.

Background

The bending machine is a machine capable of bending thin plates, and mainly structurally comprises a support, a workbench and a clamping plate, wherein the workbench is arranged on the support and comprises a base and a pressing plate, the base is connected with the clamping plate through a hinge and comprises a seat shell, a coil and a cover plate, the coil is arranged in a recess of the seat shell, and the cover plate covers the top of the recess. When the clamping device is used, the coil is electrified by the lead, and the attraction is generated on the pressing plate after the coil is electrified, so that the thin plate between the pressing plate and the base is clamped. The electromagnetic force clamping is adopted, so that the pressing plate can meet the requirements of various workpieces, the workpieces with side walls can be machined, and the operation is very simple and convenient. The bending machine is divided into a manual bending machine, a hydraulic bending machine and a numerical control bending machine. At present, plates with a plurality of bending angles are processed by sequentially bending each angle, and the bent plates are positioned by a rear material blocking transmission mechanism of a hydraulic bending machine.

The existing bending machine die is a tool used for processing and forming a plate by a bending machine, the tool is composed of various parts, and the parts composed of different dies are different. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. Under the action of the pressure of the bending machine, the blank is made into a workpiece with a specific shape and size through mutual guiding of the upper die and the lower die of the bending machine.

In the actual production process, enterprises can configure lower dies with different groove angles according to the difference of the shapes or the sizes of the formed workpieces. With the development of economy, the shapes of workpieces to be bent are more and more diversified, so that different workpieces need different dies to be processed. For example, in the processing of an aluminum plate fitting of an automatic elevator, an i-shaped plate needs to be bent and formed to form a V-shaped bent part, as shown in fig. 1 and 2, where fig. 1 is the i-shaped plate, fig. 2 is the V-shaped bent part, an arc is pressed towards the middle of the i-shaped plate 1, the bent shape is a first arc surface 12 with a semicircular middle part, two side planes connected with the first arc surface 12 are set as a first plane 13 and a second plane 14, an included angle between the first plane 13 and the second plane 14 is 110 °, two sides of the first plane 13 and the second plane 14 extending out of the axial width of the first arc surface 12 are both bent towards one side of the first arc surface 12, the bent plane is set as a third plane 15, and a bending angle between the third plane 15 and the first plane 13 or the second plane 14 is 90 °, so as to form the V-shaped bent part 11.

For the bending forming of the stated I-shaped plate, the prior technical scheme is that the first arc surface is bent by the first die, and then the four third planes are sequentially bent by the second die, so that the number of processing procedures is large; and adopt the mode that two sets of moulds processed first arc surface and third plane in proper order, be difficult to fix a position the processing third plane again on second set of mould to successively process two third planes of homonymy, be difficult to keep the degree of parallelism of two third planes of processing before and after the homonymy, the processing degree of difficulty is great.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a panel forming die that bends has and carries out the shaping of once fixing a position through same pair mould and bend, bends out first arc surface and four third planes for the third plane is bent the location and is accurate, the better effect of homonymy third plane parallel degree.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a plate bending forming die comprises an upper die and a lower die which are sequentially arranged along the vertical direction, wherein the upper die comprises a first connecting piece and an upper die core which are sequentially arranged along the vertical direction, and the bottom surface of the upper die core is provided with a first forming inclined plane, a first forming arc surface and a second forming inclined plane which are sequentially arranged along the horizontal direction; the molding size of the first molding inclined plane is equal to that of the first plane, the molding size of the first molding arc surface is equal to that of the first arc surface, and the molding size of the second molding inclined plane is equal to that of the second plane;

the lower die comprises a lower die core and a second connecting piece which are sequentially arranged along the vertical direction, a forming groove into which the upper die core can be inserted is formed in the lower surface, facing the upper die core, of the lower die core, and a third forming inclined plane, a second forming arc surface and a fourth forming inclined plane which are sequentially arranged along the horizontal direction are formed in the bottom surface of the forming groove;

when the upper die core extends into the forming groove, the lower surface of the upper die core is away from the upper surface of the lower die core by the wall thickness of a V-shaped bending piece; the distance between the circumferential side wall of the forming groove and the wall thickness of one V-shaped bending piece of the circumferential side wall of the upper die core is equal to the distance between the circumferential side wall of the forming groove and the circumferential side wall of the upper die core, and the third plane is positioned between the circumferential side wall of the upper die core and the side wall of the forming groove.

By adopting the technical scheme, the upper mold core is stamped towards the forming surface of the lower mold core, the first forming inclined surface and the third forming inclined surface form a first plane correspondingly, the first forming arc surface and the second forming arc surface form a first arc surface correspondingly, the second forming inclined surface and the fourth forming inclined surface form a second plane correspondingly, and the side wall of the upper mold core and the side wall of the forming groove form a third plane. In the bending process, the first arc surface and the four third planes are simultaneously bent, and the I-shaped plate is positioned and bent to form a V-shaped bending piece at one time, so that the third plane is accurately bent and positioned, and the third plane has good parallelism.

The utility model discloses further set up to, shaping recess notch department is equipped with the anticollision fillet, go up mould benevolence bottom and be equipped with along its circumference and dodge the fillet.

Through adopting above-mentioned technical scheme, when crashproof fillet was used for the punching press downwards, protection I-shaped panel surface prevented that shaping recess notch from haring I-shaped panel, caused I-shaped panel wearing and tearing or fracture. When the avoiding fillet is used for ensuring that the downward punching pressure of the upper die core is too high, the third plane of the I-shaped plate is prevented from being broken and broken or scrapped due to the sharp right angle.

The utility model discloses further set up to, the lower mould benevolence orientation positioning groove has been seted up to upper die benevolence one side, just positioning groove is located shaping groove notch department, I-shaped panel are located in the positioning groove.

By adopting the technical scheme, the circumferential direction of the I-shaped plate is positioned through the positioning groove, the I-shaped plate is prevented from shifting during stamping, and the bending precision of the V-shaped bending piece can be effectively improved.

The utility model discloses further set up to, the lower mould benevolence includes through the first mould benevolence piece, second mould benevolence piece and the third mould benevolence piece that sets gradually along the horizontal direction, first mould benevolence piece with third mould benevolence piece symmetry sets up, third shaping inclined plane is located on the first mould benevolence piece, second shaping arc surface is located on the second mould benevolence piece, fourth shaping inclined plane is located on the third mould benevolence piece.

By adopting the technical scheme, the lower mold core is split into three parts, so that the integral transfer and abrasion replacement of the lower mold core are facilitated; the second forming arc surface is convenient to process, and the processing precision of the second forming arc surface is improved.

The utility model discloses further set up to, a plurality of liftout recesses have been seted up on the second shaping arc surface, be provided with compression spring in the liftout recess, the compression spring orientation the liftout recess setting is stretched out to the one end of going up mould benevolence.

By adopting the technical scheme, the compression spring and the ejection groove are used for playing a role of buffering when in punch forming, so that the damage to the I-shaped plate is reduced, and the abrasion to the forming surface of the lower die core can also be reduced. After the upper die moves upwards and leaves the forming groove, the compression spring rebounds to eject the V-shaped bending piece, and therefore the workpiece is convenient to take.

The utility model discloses further set up to, first mould benevolence piece second mould benevolence piece with third mould benevolence piece bottom has a plurality of connecting plates through bolted connection, the second connecting piece orientation can supply one side of connecting plate to set up the groove of dodging that the connecting plate inlayed and stretches into, second connecting piece both ends are connected with the pressure strip, the pressure strip will the second connecting piece with first mould benevolence with third mould benevolence piece is connected.

By adopting the technical scheme, the connecting plate and the bolt are used for connecting the first die core block, the second die core block and the third die core block into a whole; the pressing plate is used for providing pressing force from the first die core block and the third die core block to the second die core block, so that the connection tightness of the die core blocks of the lower die core is enhanced, and the stability of the connection of the lower die core and the second connecting piece can be enhanced by the pressing plate.

The utility model discloses further set up to, first connecting piece top has seted up along its axial and has pressed from both sides tight spout, a plurality of T type grooves have been seted up to first connecting piece bottom, go up a plurality of T type screws of mould benevolence top fixedly connected with, T type screw embedding sets up T type inslot.

Through adopting above-mentioned technical scheme, press from both sides tight spout and be used for pressing from both sides tightly with the clamp plate cooperation of bender, first connecting piece passes through T type groove and T type screw connection with last mould benevolence, can cushion and go up the mould benevolence to the partly impact force of bender clamp plate, the life of extension bender and last mould benevolence.

To sum up, the utility model discloses following beneficial effect has:

1. the first arc surface and the four third planes can be simultaneously bent by arranging the upper die core and the lower die core, and the I-shaped plate is positioned and bent at one time to form a V-shaped bent piece, so that the third planes are accurately bent and positioned, and the third planes on the same side have good parallelism;

2. through the arrangement of the anti-collision fillet and the avoidance fillet, the effects of protecting the surface of the I-shaped plate and preventing the breakage or scrapping of the third plane of the I-shaped plate caused by sharp right angles can be achieved;

3. through positioning groove's setting, can play the precision of bending that promotes V-arrangement piece of bending, prevent the effect that I-shaped panel shifted when the blanking.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an i-shaped plate in the prior art.

Fig. 2 is a schematic diagram of the overall structure of a V-shaped bending piece in the prior art.

Fig. 3 is a schematic sectional view of the connection between the bending machine and the bending mold in this embodiment.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3, for illustrating a connection relationship between the clamping plate and the first connecting member.

Fig. 5 is a partially enlarged schematic view of a portion B in fig. 3, and is used for showing a positional relationship between the ejector groove and the compression spring.

Fig. 6 is an exploded view of the bending mold according to the present embodiment.

Fig. 7 is a schematic view of the entire structure of the upper mold core in this embodiment.

In the figure, 1, an I-shaped plate; 11. a V-shaped bending piece; 12. a first arc surface; 13. a first plane; 14. a second plane 15, a third plane; 2. an upper die; 21. a first connecting member; 211. clamping the chute; 212. a T-shaped groove; 22. an upper die core; 221. round corners are avoided; 23. a T-shaped screw; 24. A first forming bevel; 25. a first forming arc surface; 26. a second forming bevel; 3. a lower die; 31. a second connecting member; 311. connecting convex strips; 312. an avoidance groove; 32. a lower die core; 33. a positioning groove; 34. forming a groove; 341. anti-collision round corners; 35. a third forming bevel; 36. a second forming arc surface; 37. a fourth forming ramp; 38. a material ejecting groove; 381. a compression spring; 4. a first mold core block; 41. a second mold core block; 42. a third mold core block; 43. a connecting plate; 44. a compression plate; 5. bending machine; 51. an upper working table; 52. a hydraulic cylinder; 53. a clamping plate; 54. a lower working table; 55. connecting the sliding chute; 56. and (5) positioning the screw.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 3 and 4, the plate bending forming die disclosed in this embodiment includes an upper die 2 and a lower die 3 mounted on a bending machine 5, the bending machine 5 includes an upper table 51 and a lower table 54 which are oppositely disposed, a hydraulic cylinder 52 and a clamping plate 53 are sequentially connected to the upper table 51 along a vertical direction, the clamping plate 53 clamps the upper die 2 by an electromagnetic force, and the lower die 3 is mounted on a surface of the lower table 54. When the V-shaped bent part 11 is punched, the hydraulic cylinder 52 drives the upper die 2 to move downwards, and an i-shaped plate is punched towards the lower die 3.

Referring to fig. 3 and 6, the upper mold 2 includes a first connecting member 21 and an upper mold core 22 sequentially arranged along a vertical direction, a bottom surface of the upper mold core 22 is a molding surface, the lower mold 3 includes a lower mold core 32 and a second connecting member 31 sequentially arranged along the vertical direction, and a molding groove 34 into which the upper mold core 22 is inserted is formed in a surface of the lower mold core 32 facing the upper mold core 22. In order to clamp the first connecting member 21 and improve the stability of the connection between the first connecting member 21 and the clamping plate 53, a clamping sliding groove 211 is formed at the top of the first connecting member 21 along the axial direction of the clamping plate 53. In order to buffer and remove a part of the reaction force caused by the stamping of the upper mold core 22 and facilitate the detachment and replacement of the upper mold core 22, a plurality of T-shaped grooves 212 (see fig. 4) are axially formed in a sidewall of one end of the first connecting member 21 facing the bottom thereof, T-shaped screws 23 (see fig. 4) are fixedly connected to positions of the top of the upper mold core 22 corresponding to the T-shaped grooves 212, and the T-shaped screws 23 are embedded in the T-shaped grooves 212. The upper surface of the lower table 54 is symmetrically provided with connecting sliding grooves 55 along the axial direction thereof, and the bottom of the second connecting member 31 is provided with connecting protruding strips 311 formed integrally corresponding to the connecting sliding grooves 55. The connection protrusion 311 is slid in from the connection slide groove 55 side and then placed corresponding to the upper core 22. In order to position the axial position of the lower mold core 32, the lower mold core 32 is placed to slide, and positioning screws 56 are respectively installed at both ends of the second connecting member 31 in the connecting slide groove 55.

Referring to fig. 6 and 7, in order to prevent the i-shaped plate from shifting during stamping, a positioning groove 33 is formed in the upper surface of the lower die core 32, the i-shaped plate 1 is placed in the positioning groove 33, and the bottom surface of the upper die core 22 is used for forming the inner surface of the V-shaped bent piece 11. The molding surface of the bottom surface of the upper die core 22 comprises a first molding inclined surface 24, a first molding arc surface 25 and a second molding inclined surface 26 which are arranged in sequence along the horizontal direction; the bottom of the positioning groove 33 is provided with a forming groove 34 for inserting the upper mold core 22, the bottom of the forming groove 34 is a forming surface of the lower mold core 32, and the forming surface of the lower mold core 32 comprises a third forming inclined surface 35, a second forming arc surface 36 and a fourth forming inclined surface 37 which are sequentially arranged along the horizontal direction.

Referring to fig. 6 and 7, the first forming slope 24 is formed to have the same size as the first plane 13 (see fig. 1), the first forming arc 25 is formed to have the same size as the first arc 12 (see fig. 1), and the second forming slope 26 is formed to have the same size as the second plane 14 (see fig. 1); after punch forming, the V-shaped bending part 11 is located between the upper die core 22 and the lower die core 32, the first forming inclined plane 24 and the third forming inclined plane 35 form the first plane 13, the first forming arc surface 25 and the second forming arc surface 36 form the first arc surface 12, the second forming inclined plane 26 and the fourth forming inclined plane 37 form the second plane 14, and a distance of a wall thickness of the V-shaped bending part 11 is spaced between a side wall of the upper die core 22 and a side wall of the positioning groove 33, so as to form the third plane 15.

Referring to fig. 5 and 6, in order to prevent the i-shaped plate 1 from being worn or broken due to too large stamping force when the i-shaped plate 1 is stamped by the upper die core 22, an avoiding fillet 221 is formed at the bottom of the upper die core 22 along the circumferential direction thereof, and an anti-collision fillet 341 is formed at the notch of the forming groove 34. Further, in order to buffer the impact force of the upper mold core 22 on the lower mold core 32, a plurality of ejecting grooves 38 are formed on the second molding arc surface 36, a compression spring 381 is disposed in the ejecting grooves 38, and the compression spring 381 extends out of the ejecting grooves 38 toward one end of the upper mold core 22. When the bottom of the V-shaped bent piece 11 contacts the second forming arc surface 36, the compression spring 381 is completely pressed into the ejecting groove 38; when the upper die core 22 moves upwards, the V-shaped bending piece 11 is conveniently ejected out through the resilience of the compression spring 381, so that an operator can conveniently take the V-shaped bending piece.

Referring to fig. 6, in order to facilitate processing the molding surface of the lower mold core 32 and improve the processing precision thereof, the lower mold core 32 is split into a first mold core block 4, a second mold core block 41 and a third mold core block 42 for processing respectively, the first mold core block 4 is processed with a third molding inclined surface 35, the second mold core block 41 is processed with a second molding arc surface 36, and the third mold core block 42 is processed with a fourth molding inclined surface 37. The adjacent positions of the bottoms of the first mold core block 4, the second mold core block 41 and the third mold core block 42 are provided with a plurality of connecting plates 43, and the connecting plates 43 connect the first mold core block 4, the second mold core block 41 and the third mold core block 42 through bolts to form a complete lower mold core 32. Further, in order to fixedly connect the lower mold core 32, an avoiding groove 312 for the connecting plate 43 to insert into is formed on one side of the second connecting member 31 facing the connecting plate 43, and two ends of the second connecting member 31 are connected with the lower mold core 32 through the pressing plate 44. Preferably, in this embodiment, the upper die core 22 and the lower die core 32 are made of 40Cr, the first connecting member 21 and the second connecting member 31 are made of 45 steel, and the bending machine 5 is made of a WADH series pump-controlled servo numerical control bending machine 100 t/3200.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a panel forming die that bends, includes last mould (2) and bed die (3) that set gradually along vertical direction, its characterized in that: the upper die (2) comprises a first connecting piece (21) and an upper die core (22) which are sequentially arranged along the vertical direction, and the bottom surface of the upper die core (22) is provided with a first forming inclined plane (24), a first forming arc surface (25) and a second forming inclined plane (26) which are sequentially arranged along the horizontal direction; the molding size of the first molding inclined plane (24) is equal to that of the first plane (13), the molding size of the first molding arc surface (25) is equal to that of the first arc surface (12), and the molding size of the second molding inclined plane (26) is equal to that of the second plane (14);

the lower die (3) comprises a lower die core (32) and a second connecting piece (31) which are sequentially arranged along the vertical direction, a forming groove (34) into which the upper die core (22) can be inserted is formed in the lower surface, facing the upper die core (22), of the lower die core (32), and a third forming inclined plane (35), a second forming arc surface (36) and a fourth forming inclined plane (37) which are sequentially arranged along the horizontal direction are formed in the bottom surface of the forming groove (34);

when the upper die core (22) extends into the forming groove (34), the lower surface of the upper die core (22) is away from the upper surface of the lower die core (32) by the wall thickness of a V-shaped bending piece (11); the distance between the circumferential side wall of the forming groove (34) and the wall thickness of one V-shaped bending piece (11) on the circumferential side wall of the upper die core (22) is short, and the third plane (15) is located between the side wall of the upper die core (22) and the side wall of the forming groove (34).

2. The plate bending and forming die according to claim 1, wherein: the anti-collision fillet (341) is arranged at the notch of the forming groove (34), and an avoiding fillet (221) is arranged at the bottom of the upper die core (22) along the circumferential direction.

3. The plate bending and forming die according to claim 2, wherein: one side of the lower die core (32) facing the upper die core (22) is provided with a positioning groove (33), the positioning groove (33) is positioned at the notch of the forming groove (34), and the I-shaped plate (1) is positioned in the positioning groove (33).

4. The plate bending and forming die according to claim 1, wherein: the lower die core (32) comprises a first die core block (4), a second die core block (41) and a third die core block (42) which are sequentially arranged along the horizontal direction, the first die core block (4) and the third die core block (42) are symmetrically arranged, a third forming inclined plane (35) is positioned on the first die core block (4), a second forming arc surface (36) is positioned on the second die core block (41), and a fourth forming inclined plane (37) is positioned on the third die core block (42).

5. The plate bending and forming die according to claim 4, wherein: a plurality of material ejecting grooves (38) are formed in the second forming arc surface (36), compression springs (381) are arranged in the material ejecting grooves (38), and the compression springs (381) face the end, extending out of the material ejecting grooves (38), of the upper die core (22).

6. The plate bending and forming die according to claim 4, wherein: first mould benevolence piece (4) second mould benevolence piece (41) with third mould benevolence piece (42) bottom has a plurality of connecting plates (43) through bolted connection, second connecting piece (31) orientation one side of connecting plate (43) is seted up and is supplied that connecting plate (43) inlay to stretch into dodge groove (312), second connecting piece (31) both ends are connected with pressure strip (44), pressure strip (44) will second connecting piece (31) with first mould benevolence with third mould benevolence piece (42) are connected.

7. The plate bending and forming die according to claim 1, wherein: the top of the first connecting piece (21) is provided with a clamping sliding groove (211) along the axial direction of the first connecting piece, the bottom of the first connecting piece (21) is provided with a plurality of T-shaped grooves (212), the top of the upper die core (22) is fixedly connected with a plurality of T-shaped screws (23), and the T-shaped screws (23) are embedded in the T-shaped grooves (212).