CN210788874U

CN210788874U - Left rear crossbeam forming die

Info

Publication number: CN210788874U
Application number: CN201921440240.8U
Authority: CN
Inventors: 杨佳爽; 萧强; 柴文凯; 赵鹏
Original assignee: Tianhe Mould Technology Tianjin Co Ltd
Current assignee: Tianhe Mould Technology Tianjin Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-19
Anticipated expiration: 2029-08-30

Abstract

The utility model relates to a left back girder forming die belongs to stamping die's technical field, and it includes mould and lower mould, and the bottom of going up the mould is provided with presses the material core, presses the material core to include the supporting part and presses the material portion, presses the material core to be connected with the second nitrogen cylinder that drives the material core and go up the lift, and the second nitrogen cylinder is fixed in the bottom of last mould, and the surface of lower mould is seted up flutedly, is provided with the blank holder in the recess, the lower surface of supporting part is provided with a plurality of stabilizer blades, and the marginal rotation of blank holder is connected with a plurality of swing arms, and the axis of rotation is located the horizontal plane, and one side that blank holder center department was kept away from to the swing arm is provided with drive assembly, and drive assembly drive swing arm's upper portion is to the top and the inseparable butt. The utility model discloses the impaired possibility of work piece when can reduce the drawing of patterns.

Description

Left rear crossbeam forming die

Technical Field

The utility model belongs to the technical field of stamping die's technique and specifically relates to a left back girder forming die is related to.

Background

The stamping die is a special processing device for processing materials into parts in cold stamping processing. Automobile parts comprise a left rear crossbeam, and the machining of the left rear crossbeam usually requires the use of a stamping die.

Current stamping die includes mould and lower mould, the lower surface of going up the mould is provided with the clamp plate, the upper surface of clamp plate and the lower fixed surface who goes up the mould are connected, the below of clamp plate is provided with presses the material core, it is connected with the second nitrogen cylinder to press the material core, the second nitrogen cylinder is fixed in the lower surface of clamp plate, the upper surface of lower mould is vertical to be provided with a plurality of guide posts, the upper surface of lower mould is seted up flutedly, be provided with the blank holder in the recess, the outer wall of guide post is located to the blank holder cover and slides with the guide post and is connected, be provided with a plurality of first.

And during punching, the punching machine drives the upper die and the material pressing core to move downwards, when the material pressing core is contacted with the blank, a piston rod of the second nitrogen cylinder starts to contract, when the second nitrogen cylinder contracts to a limit state, the bottom end of the upper die is also contacted with the workpiece, and the punching machine continues to drive the upper die and the material pressing core to move downwards together until the upper die and the lower die press and form the workpiece. When the second nitrogen cylinder is released to be in a limit state, the pressing core can be driven to move upwards together, so that the workpiece is exposed, and the workpiece can be taken out to finish the machining process.

The above prior art solutions have the following drawbacks: when the second nitrogen cylinder is released, a piston rod of the second nitrogen cylinder generates a downward acting force on the material pressing core, so that the material pressing core generates a downward acting force on a workpiece, and the workpiece is easily damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a left back girder forming die can reduce the impaired possibility of work piece when the drawing of patterns.

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

the utility model provides a left back girder forming die, includes mould and lower mould, and the bottom of going up the mould is provided with presses the material core, presses the material core to include the supporting part and presses material portion, presses the material core to be connected with the second nitrogen cylinder that the drive pressed the material core to go up the mould, and the second nitrogen cylinder is fixed in the bottom of last mould, and the surface of lower mould is seted up flutedly, is provided with the blank holder in the recess, the lower surface of supporting part is provided with a plurality of stabilizer blades, and the edge rotation of blank holder is connected with a plurality of swing arms, and the axis of rotation is located the horizontal plane, and one side that the blank holder center department was kept away from to the swing arm is provided with drive assembly, and the top that drive assembly drive swing arm moved until the swing arm to the direction.

By adopting the technical scheme, when the stamping die is used, the upper die and the material pressing core are driven by the stamping machine to move downwards, when the material pressing core is contacted with a blank, a piston rod of the second nitrogen cylinder starts to contract, when the second nitrogen cylinder contracts to a limit state, the bottom end of the upper die is also contacted with a workpiece, and the stamping machine continues to drive the upper die and the material pressing core to move downwards together until the blank is pressed and formed by the upper die and the lower die; in the whole pressing and forming process, the bottom ends of the support legs are always suspended; after the blank is pressed and formed, the driving assembly drives the upper part of the swing arm to move towards the direction close to the support leg until the top end of the swing arm is tightly abutted against the bottom end of the support leg; then the upper die, the material pressing core, the blank holder and the workpiece move upwards together, and in the whole demolding process, the bottom end of the supporting leg is always in tight contact with the top end of the swing arm, so that the downward acting force of the material pressing core on the workpiece can be avoided when the second nitrogen cylinder is released, and the effect of reducing the possibility of damage of the workpiece is achieved; when the piston rod of the second nitrogen cylinder is released to be in a limit state, the punching machine drives the material pressing core to move together with the upper die, so that the material pressing core is also separated from the workpiece, and the workpiece can be taken down; at this time, the spring drives the swing arm to return to the original position under the action of self resilience force, and then the next operation can be carried out.

The utility model discloses further set up to: the driving assembly comprises a rolling shaft, driving pieces are connected to two ends of the rolling shaft, and the driving pieces drive the rolling shaft to move towards the direction close to or far away from the swing arm.

Through adopting above-mentioned technical scheme, with blank compression moulding back, drive the roller bearing by the driving piece and remove to the direction that is close to the swing arm, until roller bearing and swing arm contact, the upper portion that can drive the swing arm removes to the direction that is close to the briquetting core, and the top of swing arm and the inseparable butt in bottom of stabilizer blade, the structure and the principle of roller bearing are simple, are convenient for realize.

The utility model discloses further set up to: the outer wall of the rolling shaft is sleeved with a rotating sleeve in a rotating connection mode.

Through adopting above-mentioned technical scheme, the outer wall of roller bearing rotates and is connected with the rotation cover, when roller bearing and swing arm contact, rotates and be roll connection between cover and the swing arm, and the frictional force of production is rolling friction, can fall to the minimum with the frictional force between roller bearing and the swing arm to be convenient for protect the integrity of swing arm, the convenience when improving the use.

The utility model discloses further set up to: one side of the swing arm close to the rolling shaft is an outward convex curved surface.

Through adopting above-mentioned technical scheme, the curved surface of swing arm outer wall can cooperate with the outer wall that rotates the cover, and when rotating the cover and being close to the swing arm, the setting up of curved surface is convenient for share the effort that the roller bearing applyed to the swing arm, improves the flexibility when the swing arm rotates, simultaneously, can further reduce the frictional force between roller bearing and the swing arm.

The utility model discloses further set up to: the edge pressing ring is provided with a plurality of groups of positioning assemblies, each positioning assembly comprises a vertically arranged positioning rod, each positioning rod is connected with an adjusting rod, and the adjusting rods are detachably and fixedly connected with the upper surface of the edge pressing ring.

By adopting the technical scheme, the positioning assembly is convenient for determining the position of the blank, the processing accuracy is improved, and the processing quality is improved; during the use, can place the blank between a plurality of locating levers, set up regulation pole and blank holder into dismantling fixed connection, through adjusting the distance between the adjustable a plurality of locating levers of pole to be convenient for process not equidimension blank, when having the size difference between the blank, also do not influence processing.

The utility model discloses further set up to: the surface of the adjusting rod is provided with an adjusting hole, an adjusting bolt is arranged in the adjusting hole, and one end of the adjusting bolt penetrates through the adjusting hole and is in threaded connection with the blank holder.

By adopting the technical scheme, when the position of the positioning rod needs to be adjusted, the adjusting bolt is unscrewed, so that the end part of the adjusting bolt is separated from the blank holder, then the adjusting rod is slid until the positioning rod is positioned at a proper position, and then the adjusting bolt is screwed again, so that the adjustment of the positioning rod can be completed; the adjusting bolt is simple in structure and principle and convenient to realize.

The utility model discloses further set up to: the upper part of the side wall of the positioning rod close to the center of the blank holder is in an outward bending shape.

Through adopting above-mentioned technical scheme, the space between a plurality of locating levers is uncovered form, is convenient for place the blank between a plurality of locating levers, reduces the time of placing the blank, improves machining efficiency.

The utility model discloses further set up to: the upper surface of blank holder is provided with the cushion, and the swing arm is seted up jaggedly near one side of blank holder, and the cushion is close to one side of swing arm and the top looks adaptation of breach.

By adopting the technical scheme, in the process that the driving piece drives the swing arm to rotate, when one side, close to the swing arm, of the cushion block is attached to the inner wall of the notch, the swing arm does not rotate any more, and the top end of the swing arm can be tightly abutted to the bottom end of the support leg; the setting of cushion can reach the effect of location, and the rotation direction of restriction swing arm reduces the too big possibility of swing arm rotation range.

The utility model discloses further set up to: the elastic pieces are at least provided with two.

Through adopting above-mentioned technical scheme, the setting of two or more than two elastic component is convenient for improve the equilibrium of swing arm atress, improves the stationarity when the swing arm rotates.

To sum up, the utility model discloses a beneficial technological effect does:

1. the arrangement of the swing arm enables the bottom end of the support leg to be always in tight abutting joint with the top end of the swing arm in the whole demolding process, the possibility of releasing of the second nitrogen cylinder can be reduced, the downward acting force of the pressure material core on a workpiece during demolding is reduced, and the effect of reducing the possibility of damaging the workpiece is achieved;

2. the positioning assembly is arranged to facilitate the determination of the position of the blank, improve the accuracy in processing and improve the processing quality;

3. the setting of cushion can reach the effect of location, and the rotation direction of restriction swing arm reduces the too big possibility of swing arm rotation range.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the utility model with the upper die hidden;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 4 is a schematic structural view of the bottom of the blank holder of the present invention;

FIG. 5 is a schematic structural view of the bottom of the lower mold of the present invention;

fig. 6 is an explosion diagram of the upper mold and the pressing core according to the present invention;

fig. 7 is a schematic structural view of the material pressing core of the present invention;

FIG. 8 is a schematic structural view of the blank holder of the present invention;

FIG. 9 is an enlarged partial schematic view of portion B of FIG. 8;

fig. 10 is a partially enlarged schematic view of a portion C in fig. 9.

In the figure, 1, a lower die; 11. a groove; 111. a guide post; 112. a first nitrogen cylinder; 2. a blank holder; 21. a fixed block; 211. swinging arms; 2111. a notch; 22. a containing groove; 221. a spring; 23. cushion blocks; 3. a positioning assembly; 31. positioning a rod; 32. adjusting a rod; 321. an adjustment hole; 3211. adjusting the bolt; 4. an upper die; 411. a second nitrogen cylinder; 5. pressing the material core; 51. a support portion; 511. a sliding groove; 52. a material pressing part; 53. a support leg; 6. a support pillar; 61. a drive assembly; 611. a roller; 6111. rotating the sleeve; 612. the cylinder is driven.

Detailed Description

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

Referring to fig. 1 and fig. 2, for the utility model discloses a girder forming die behind left side, including last mould 4 and lower mould 1, the upper surface of lower mould 1 is seted up flutedly 11, be provided with blank holder 2 in the recess 11, blank holder 2's upper surface is provided with locating component 3, it is provided with blank core 5 to go up one side that mould 4 is close to lower mould 1, blank holder 2 rotates and is connected with swing arm 211, one side that blank holder 2 was kept away from to swing arm 211 is connected with drive assembly 61, drive assembly 61 drives swing arm 211 and removes to the direction that is close to blank core 5, swing arm 211 is close to and is connected with spring 221 between blank holder 2 one side of blank holder 2 and the blank holder 2, spring 221 drives swing arm 211.

Referring to fig. 4, the lower surface of the blank holder 2 is provided with a plurality of first nitrogen cylinders 112, referring to fig. 4, the bottom ends of the first nitrogen cylinders 112 penetrate through the lower die 1, and when in use, the end parts of the first nitrogen cylinders 112 far away from the blank holder 2 are fixed on a punching machine.

Referring to fig. 8 and 9, the upper surface of the blank holder 2 is provided with a plurality of sets of positioning assemblies 3, and the positioning assemblies 3 include positioning rods 31 and adjusting rods 32. The positioning rod 31 is vertically arranged, and one side of the upper part of the positioning rod 31, which is close to the center of the blank holder 2, is bent. The adjusting rod 32 is horizontally disposed, and one end of the adjusting rod 32 close to the positioning rod 31 is fixedly connected with the lower part of the positioning rod 31.

Referring to fig. 9, a waist-shaped adjusting hole 321 is formed in the surface of the adjusting rod 32, an adjusting bolt 3211 is disposed in the adjusting hole 321, and the adjusting bolt 3211 penetrates through the adjusting hole 321, and the end portion of the adjusting bolt is in threaded connection with the upper surface of the blank holder 2, so that the adjusting rod 32 is fixed on the blank holder 2.

When a workpiece needs to be pressed, firstly, a blank is placed between the positioning assemblies 3, so that the edge of the blank is abutted against the side wall of the positioning rod 31, and the blank is temporarily fixed between the positioning rods 31 for processing; when the size of the blank is slightly larger or smaller, the adjusting bolt 3211 can be unscrewed, so that the end part of the adjusting bolt 3211 is separated from the blank holder 2, then the adjusting rod 32 is slid until the side wall of the positioning rod 31 is abutted against the edge of the blank, and then the adjusting bolt 3211 is screwed, so that the blanks with different sizes can be fixed.

Referring to fig. 6, the upper die 4 is slidably connected to the pressing core 5, and the pressing core 5 includes a horizontally disposed supporting portion 51 and a vertically disposed pressing portion 52. The top end of the pressing part 52 is fixedly connected with the center of the lower surface of the supporting part 51. Four corners of the lower surface of the support portion 51 are respectively vertically provided with a leg 53.

Referring to fig. 7, three sliding grooves 511 are vertically formed in the upper surface of the material pressing core 5, a second nitrogen cylinder 411 is arranged in each sliding groove 511, the top end of each second nitrogen cylinder 411 is fixedly connected with the upper die 4, and the bottom end of each piston rod is fixedly connected with the inner wall of the bottom end of each sliding groove 511.

After the blank is placed among the positioning rods 31, the upper die 4 and the pressing core 5 are driven by the punching machine to move downwards, when the pressing core 5 is in contact with the blank, the blank holder 2 is driven to move downwards along the outer wall of the guide post 111, the first nitrogen cylinder 112 starts to contract, and when the first nitrogen cylinder 112 contracts to a limit state, the blank holder 2 stops moving; at this time, the piston rod of the second nitrogen cylinder 411 begins to contract, only the upper die 4 moves downwards, when the second nitrogen cylinder 411 contracts to the limit state, the bottom end of the upper die 4 contacts with the workpiece, and the punching machine drives the upper die 4 and the material pressing core 5 to move downwards together until the upper die 4 and the lower die 1 press-form the blank.

Referring to fig. 8, the outer wall of the blank holder 2 is provided with four fixing blocks 21, and the side walls of the fixing blocks 21 are fixedly connected with the outer wall of the blank holder 2. Referring to fig. 10, the fixed block 21 is rotatably connected with a swing arm 211, and the rotation axis is perpendicular to the outer wall of the blank holder 2. The bottom of swing arm 211 rotates with fixed block 21 to be connected, and the top extends upwards, and the tip is higher than the upper surface of blank holder 2 and to keeping away from the direction slope of blank holder 2.

Referring to fig. 10, two accommodating grooves 22 are horizontally formed in the side wall of the blank holder 2 close to the swing arm 211, a spring 221 is disposed in the accommodating groove 22, one end of the spring 221 is fixedly connected to the inner wall of the accommodating groove 22, and the other end is fixedly connected to the middle upper portion of the swing arm 211. When the spring 221 is in the original state, the tip of the swing arm 211 is inclined in a direction away from the blank holder 2.

Referring back to fig. 2, four support columns 6 are vertically arranged on the lower surface of the upper die 4, the bottom ends of the support columns 6 are fixedly connected with the upper surface of the upper die 4, the top ends of the support columns 6 extend upwards, and a driving assembly 61 for driving the upper portion of the swing arm 211 to move towards the direction close to the support leg 53 is arranged on the top ends of the support columns 6.

Referring to fig. 3, the driving assembly 61 includes a roller 611 and a driving cylinder 612. The roller 611 is located the one side of swing arm 211 keeping away from blank holder 2, and the outer wall cover is established and is rotated and be connected with and rotate the cover 6111, drives actuating cylinder 612 and is fixed in support column 6, drives actuating cylinder 612's piston rod and the both ends fixed connection of roller 611.

After a workpiece is pressed and formed, when demolding is needed, firstly, a piston rod of the driving cylinder 612 extends to drive the roller 611 to move towards the direction close to the swing arm 211 and push the swing arm 211, so that the spring 221 is compressed until the top end of the swing arm 211 is tightly abutted to the bottom end of the supporting leg; then the blank holder 2, the workpiece, the material pressing core 5 and the upper die 4 move upwards together, and the punching machine continues to drive the upper die 4 to move upwards; at this moment, the second nitrogen cylinder 411 can release gradually, because the bottom of landing leg and swing arm 211 butt, even the piston rod release of second nitrogen cylinder 411 can not drive the pressure material core 5 and move down to reduce the possibility that the landing leg produced the decurrent effort to the work piece, be convenient for protect the integrity of work piece, improve processingquality.

When the piston rod of the second nitrogen cylinder 411 is released to the limit, the punching machine drives the upper die 4 and the material pressing core 5 to move upwards together, and at the moment, the workpiece can be exposed, so that a worker can conveniently take the workpiece; then, the piston rod of the driving cylinder 612 is contracted to drive the roller 611 to move in a direction away from the swing arm 211 so as to disengage from the swing arm 211, and at this time, the spring 221 drives the upper portion of the swing arm 211 to move in a direction close to the roller 611 under the action of the self-resilience force, so that the swing arm 211 is restored to the initial state.

Referring to fig. 10, a notch 2111 is formed in one side of the swing arm 211 close to the blank holder 2, the inner wall of the notch 2111 is arc-shaped, a cushion block 23 is horizontally arranged on the upper surface of the blank holder 2, and the cushion block 23 is matched with the top end of the notch 2111.

When the top end of the swing arm 211 is tightly abutted to the bottom end of the leg, the cushion block 23 is just embedded in the notch 2111. The setting of cushion 23 can reach the effect of location, and the rotation direction of restriction swing arm 211 reduces swing arm 211 and rotates the too big possibility of range.

The implementation principle of the embodiment is as follows: after the blank is pressed and formed, the driving cylinder 612 drives the roller 611 to move towards the direction close to the swing arm 211 and pushes the swing arm 211, at this time, the spring 221 is in a compressed state, when the cushion block 23 is just embedded in the notch 2111 of the swing arm 211, the swing arm 211 does not rotate any more, and meanwhile, the top end of the swing arm 211 is tightly abutted to the bottom end of the support leg 53; then the upper die 4, the swaging core 5, the blank holder 2 and the workpiece move upwards together, the punching machine drives the upper die 4 to continue moving upwards, and the second nitrogen cylinder 411 is released gradually; in the whole demoulding process, the bottom end of the supporting leg 53 is always tightly abutted to the top end of the swing arm 211, so that the downward acting force of the material pressing core 5 on the workpiece can be avoided when the second nitrogen cylinder 411 is released, and the effect of reducing the possibility of workpiece damage is achieved. When the piston rod of the second nitrogen cylinder 411 is released to be in a limit state, the punching machine drives the material pressing core 5 and the upper die 4 to move together, so that the material pressing core 5 is also separated from the workpiece, and the workpiece can be taken down; at this time, the driving cylinder 612 drives the roller 611 to move away from the swing arm 211, and the spring 221 drives the swing arm 211 to return to the original position under the action of its own resilience force, so that the next operation can be performed.

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 girder forming die behind left side, including last mould (4) and lower mould (1), the bottom of going up mould (4) is provided with presses material core (5), press material core (5) including supporting part (51) and press material portion (52), press material core (5) to be connected with second nitrogen cylinder (411) that drive press material core (5) goes up and down, second nitrogen cylinder (411) are fixed in the bottom of last mould (4), recess (11) are seted up on the surface of lower mould (1), be provided with blank holder (2) in recess (11), its characterized in that: the lower surface of supporting part (51) is provided with a plurality of stabilizer blades (53), the edge rotation of blank holder (2) is connected with a plurality of swing arms (211), the axis of rotation is located the horizontal plane, one side that blank holder (2) center department was kept away from in swing arm (211) is provided with drive assembly (61), the top and the stabilizer blade (53) of swing arm (211) are closely abutted to the upper portion of drive assembly (61) drive swing arm (211) to the direction removal that is close to stabilizer blade (53), swing arm (211) are close to one side of blank holder (2) and are connected with the elastic component, the elastic component drives swing arm (211) and resumes the normal position.

2. The left rear girder forming die of claim 1, wherein: the driving assembly (61) comprises a roller (611), driving parts are connected to two ends of the roller (611), and the driving parts drive the roller (611) to move towards a direction close to or far away from the swing arm (211).

3. The left rear girder forming die of claim 2, wherein: the outer wall of the rolling shaft (611) is sleeved with a rotating sleeve (6111) in a rotating connection mode.

4. The left rear girder forming die of claim 2, wherein: one side of the swing arm (211) close to the roller (611) is an outward convex curved surface.

5. The left rear girder forming die of claim 1, wherein: the blank holder (2) is provided with a plurality of groups of positioning assemblies (3), each positioning assembly (3) comprises a vertically arranged positioning rod (31), each positioning rod (31) is connected with an adjusting rod (32), and each adjusting rod (32) is detachably and fixedly connected with the upper surface of the blank holder (2).

6. The left rear girder forming die of claim 5, wherein: the surface of the adjusting rod (32) is provided with an adjusting hole (321), an adjusting bolt (3211) is arranged in the adjusting hole (321), and one end of the adjusting bolt (3211) penetrates through the adjusting hole (321) and is in threaded connection with the blank holder (2).

7. The left rear girder forming die of claim 5, wherein: the upper part of the side wall of the positioning rod (31) close to the center of the blank holder (2) is bent outwards.

8. The left rear girder forming die of claim 1, wherein: the upper surface of blank holder (2) is provided with cushion (23), and breach (2111) have been seted up to one side that swing arm (211) are close to blank holder (2), and one side that cushion (23) are close to swing arm (211) and the top looks adaptation of breach (2111).

9. The left rear girder forming die of claim 1, wherein: the elastic pieces are at least provided with two.