CN210333983U

CN210333983U - Drawing die pressing core delay return stroke structure

Info

Publication number: CN210333983U
Application number: CN201920558710.4U
Authority: CN
Inventors: 张玉超; 李志国; 陈曦; 王洪峰
Original assignee: Tianjin Yingli Mold Manufacturing Co ltd
Current assignee: Tianjin Yingli Mold Manufacturing Co ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-04-17
Anticipated expiration: 2029-04-23

Abstract

The utility model provides a drawing die material pressing core time delay return stroke structure belongs to the mould field, including the material pressing core, the blank holder, pull out and collude, slider and nitrogen spring, press the material pressing core lower extreme to collude the fixed block through pulling out and pull out to collude and collude the connection, pull out and collude fixed setting and pulling out and collude the fixed block front side, pull out and collude side and slider side sliding connection, the slider setting is on the slide wedge deflector and the two is sliding connection, the slider is kept away from and is pulled out the one end and the contact setting of coaster one end of colluding the fixed block, the coaster other end is the inclined plane, and with the driving block under inclined plane sliding connection, the driving block top is provided with nitrogen spring, nitrogen spring passes through nitrogen spring. The utility model discloses open the in-process at the mould, the lower mould blank holder rises, and the pressure material core separates with the lower mould terrace die, nevertheless presses the material core not return stroke temporarily, and along with the mould continues to open, the lower mould blank holder is after the one end distance that rises, goes up the mould and presses the material core and just begin the return stroke, prevents to go up the mould when the mould just opens and press the material core to begin the return stroke and make the work piece warp.

Description

Drawing die pressing core delay return stroke structure

Technical Field

The utility model belongs to the mould field relates to a drawing die presses material core time delay return stroke structure.

Background

Generally, in the process of closing a drawing die, along with the reduction of the heights of an upper die and a lower die, an upper die pressing core starts to be compressed upwards after contacting a lower die convex die until the upper die pressing core is closed to the bottom, the upper die pressing core starts to return when the die just starts to be opened, and the pressing core returns too fast along with the upper die, so that a workpiece is easy to deform.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a drawing die that prevents to press the material core return stroke too fast to make the work piece warp presses material core time delay return stroke mechanism.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a drawing die material pressing core time delay return stroke structure, includes material pressing core, blank holder, pulls out and colludes, slider and nitrogen spring, material pressing core lower extreme colludes the fixed block through pulling out and pulls out and collude the connection, it colludes fixed setting and pulls out and colludes the fixed block front side to pull out, it colludes side and slider side sliding connection to pull out, the slider sets up on the slide wedge deflector and the two is sliding connection, the slider is kept away from to pull out and is colluded the one end of fixed block and tackle one end contact setting, the tackle other end is the inclined plane to with the driving block under inclined plane sliding connection, the driving block top is provided with nitrogen spring, nitrogen spring passes through nitrogen spring mounting flange and upper die base fixed connection.

Furthermore, the pulling hook fixing block is arranged above the sliding block, and the lower end face of the pulling hook fixing block is an inclined plane and is in contact with the opposite face of the sliding block.

Furthermore, a return nitrogen spring is arranged on one side of the sliding block and fixed on a return nitrogen spring fixing seat, and the return nitrogen spring is located below the pulling hook.

Furthermore, a pressure bearing pad is fixedly arranged at one end of the pulley, which is in contact with the sliding block.

Further, coaster and drive block set up on leading the slide, coaster and drive block and lead the slide and be sliding connection, lead the slide and be U type structure, the top is provided with the apron, the nitrogen spring lower extreme passes apron and drive block up end contact.

Furthermore, the fixed stopper that is provided with in apron upper end, the stopper sets up quantity and is two, is located the left and right sides of nitrogen spring mounting flange below.

Furthermore, the lower end of the guide sliding plate is provided with a groove, a positioning key is arranged in the groove, the height of the positioning key is larger than the depth of the groove, and the positioning key and the guide sliding plate are fixed on the blank holder.

Furthermore, a sensor is arranged on one side, away from the pulley, of the driving block, and the sensor penetrates through the driving block to be in contact with the pulley.

Furthermore, each terminal surface of slider is last fixedly to be provided with the first self-lubricating baffle with slide wedge deflector sliding connection, be provided with the second self-lubricating baffle with guide slide sliding connection on each terminal surface of coaster, be provided with the third self-lubricating baffle with guide slide sliding connection on the drive block.

Furthermore, the wedge guide plate is fixedly arranged on a blank holder, and the blank holder is arranged on the lower die base through a spring.

Compared with the prior art, the utility model has the advantages and positive effect as follows.

1. The utility model discloses at the mould opening in-process, lower mould blank holder receives the spring force upward movement, and the blank pressing core separates with lower mould terrace die, and the blank pressing core keeps relative static with pressing the material core, and the blank pressing ring one end distance that rises is enough, goes up the mould and presses the material core and just begin the return stroke, prevents to go up the mould when the mould just opened and press the material core to begin the return stroke and make the work piece warp.

2. The utility model discloses nitrogen spring still applys certain elasticity to the drive block during the die sinking, and the slider continues to receive to pulling out the power of colluding the direction motion, and return stroke nitrogen spring's elasticity is less than nitrogen spring's elasticity this moment, and the slider stops to pull out and colludes the upward movement, pulls out to collude and collude the fixed block and press the material core to be connected through pulling out, has slowed down the return stroke of pressing the material core.

3. The contact end face of the pulley and the sliding block is fixedly provided with the pressure bearing pad, so that the pulley is prevented from applying too much force on the sliding block to cause the damage of the sliding block; the positions of the pulley and the slide block are sensed through the sensor, and the slide block is positioned below the pulling hook and is prevented from colliding when the pulling hook moves downwards.

4. The utility model discloses pull out under the fixed block inclined plane and the slider inclined plane contact, prevent the slider atress and continue the motion to avoided return stroke nitrogen spring load too big, extension return stroke nitrogen spring life.

5. The utility model discloses all fixedly on slider, coaster and the drive block terminal surface be provided with the self-lubricating baffle that plays the guide effect.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a material pressing core delay return structure of a drawing die of the present invention;

fig. 2 is a schematic structural view of a material pressing core delay return structure of the drawing die of the present invention;

FIG. 3 is a schematic structural view of the material pressing core, the blank holder and the hook fixing block of the present invention;

fig. 4 is a schematic cross-sectional view of the material pressing core delay return structure of the drawing die of the present invention.

Description of reference numerals:

1. an upper die holder; 2. a lower die holder; 3. pressing the material core; 4. a blank holder; 5. pulling the hook fixing block; 6. pulling out the hook; 7. a slider; 8. a return nitrogen spring; 9. a return nitrogen spring fixing block; 10. a first self-lubricating guide plate; 11. a pressure bearing pad; 12. a pulley; 13. a second self-lubricating guide plate; 14. a drive block; 15. a third self-lubricating guide plate; 16. a nitrogen spring; 17. installing a nitrogen spring flange; 18. a limiting block; 19. a sensor; 20. a guide slide plate; 21. a cover plate; 22. a positioning key; 23. a groove; 24. a wedge guide plate; 25. a spring.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. 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 otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 4, a material pressing core time-delay return structure of a drawing die comprises a material pressing core 3, a blank holder 4, a pulling hook 6, a slide block 7 and a nitrogen spring 16, wherein the lower end of the material pressing core 3 is connected with the pulling hook 6 through a pulling hook fixing block 5, the pulling hook 6 is fixedly arranged on the front side of the pulling hook fixing block 5, the side end of the pulling hook 6 is slidably connected with the side end of the slide block 7, the slide block 7 is arranged on a wedge guide plate 24 and is slidably connected with the wedge guide plate, one end of the slide block 7 far away from the pulling hook fixing block 5 is in contact with one end of a pulley 12, the other end of the pulley 12 is an inclined plane and is slidably connected with the lower inclined plane of a driving block 14, the nitrogen spring 16 is arranged above the driving block 14, the nitrogen spring 16 is fixedly connected with an upper die holder 1 through a nitrogen spring mounting flange 17, when the die is closed, the pulling hook 6 moves to a, the blank holder 4 is driven by the elasticity of the spring 25 to move the slide block 6 upwards, the slide block 7 is still pushed to move towards the direction of the pulling hook 6 by certain elasticity of the nitrogen spring 16, the upward movement of the pulling hook 6 is reduced, and the return speed of the blank pressing core 3 is delayed.

As shown in fig. 1 and 2, preferably, the fixed pulling block 5 is disposed above the slider 7, the lower end surface of the fixed pulling block 5 is an inclined surface and is disposed in contact with the opposite surface of the slider 7, and the lower inclined surface of the fixed pulling block 5 is in contact with the upper inclined surface of the slider 7 to generate a certain resistance to prevent the pulley 7 from moving forward.

As shown in fig. 1 and 2, preferably, a return nitrogen spring 8 is disposed on one side of the slider 7, the return nitrogen spring 8 is fixed on a return nitrogen spring fixing seat 9, the return nitrogen spring 8 is located below the hook 6, and the return nitrogen spring 8 pushes the slider 7 to an initial state before mold closing by means of elastic force.

As shown in fig. 1 and 2, preferably, a pressure bearing pad 11 is fixedly arranged at one end of the tackle 12, which is in contact with the sliding block 7, so as to prevent the tackle from applying excessive force to the sliding block 7 and damaging the sliding block 7.

As shown in FIG. 1, preferably, the pulley 12 and the driving block 14 are disposed on a guide sliding plate 20, the pulley 12 and the driving block 14 are slidably connected to the guide sliding plate 20, the guide sliding plate 20 is of a U-shaped structure, a cover plate 21 is disposed above the guide sliding plate 20, the lower end of the nitrogen spring 16 passes through the cover plate 21 to contact with the upper end surface of the driving block 14, and the guide sliding plate 20 guides the pulley 12 and the driving block 14.

As shown in fig. 1 and 2, preferably, the upper end of the cover plate 21 is fixedly provided with two limiting blocks 18, the two limiting blocks 18 are located at the left side and the right side below the nitrogen spring mounting flange 17, and the limiting blocks 18 play a limiting role in limiting the downward stroke of the nitrogen spring 16.

As shown in fig. 2, preferably, the lower end of the guide sliding plate 20 is provided with a groove 23, a positioning key 22 is arranged in the groove 23, the height of the positioning key 22 is greater than the depth of the groove 23, the positioning key 22 and the guide sliding plate 20 are both fixed on the blank holder 4, and the positioning key 22 prevents the guide sliding plate 20 from being moved by force and counteracts the lateral force.

As shown in fig. 1 and 2, preferably, a sensor 19 is disposed on a side of the driving block 14 away from the trolley 12, the sensor 19 passes through the driving block 14 to contact the trolley 12, the sensor 19 is located on the sensor and is a device for detecting the moving displacement of the object, and the sensor 19 senses the positions of the trolley 12 and the slide block 7 and avoids the hook from colliding with the slide block 7 when moving downwards.

As shown in fig. 1 and 2, preferably, each end surface of the slider 7 is fixedly provided with a first self-lubricating guide plate 10 slidably connected to the wedge guide plate 24, each end surface of the pulley 12 is provided with a second self-lubricating guide plate 13 slidably connected to the guide slide plate 20, the driving block 14 is provided with a third self-lubricating guide plate 15 slidably connected to the guide slide plate 20, and the first self-lubricating guide plate 10, the second self-lubricating guide plate 13 and the third self-lubricating guide plate 15 all play a role in guiding.

As shown in fig. 3, preferably, the wedge guide plate 24 is fixedly disposed on the blank holder 4, the blank holder 4 is disposed on the lower die holder 2 through a spring 25, when the die is opened, the blank holder 4 is lifted to make the blank holder core 3 not return, and after the blank holder 4 moves upward to a certain distance, the blank holder core 3 starts to return, so as to prevent the die from opening the blank holder core 3 and starting to return to deform the workpiece.

The actual working process is that when the die is closed, the material pressing core 3 drives the pulling hook 6 to move downwards to a certain distance through the upper die base 1, meanwhile, the nitrogen spring 16 applies downward force to the driving block 14 through the upper die base 1, so that the driving block 14 pushes the pulley 12, the pulley 12 pushes the slider 7 to move to a position matched with the pulling hook 6, the lower inclined surface of the pulling hook fixing block 5 is in contact with the upper inclined surface of the slider 7, the slider 7 is prevented from being stressed to move continuously, the phenomenon that the load of the return nitrogen spring 8 is overlarge, the pressure bearing pad 12 is fixedly arranged on the contact end surface of the pulley 12 and the slider 7, the phenomenon that the slider 7 is damaged due to overlarge force applied to the slider 7 by the pulley 12 is avoided, the sensor 19 senses the positions of the pulley 12 and the slider 7, and the phenomenon that when the pulling hook; when the die is opened, the upper die base 1 drives the material pressing core 3 to move upwards, meanwhile, the spring 25 at the lower end of the blank holder 4 applies upward elastic force to the blank holder 4, the material pressing core 3, the blank holder 4 and a workpiece are in a relative static state, the nitrogen spring 16 still applies certain elastic force to the driving block 14, the sliding block 7 continues to be subjected to the force of moving towards the pulling hook 6, the elastic force of the return nitrogen spring 8 is smaller than the elastic force of the nitrogen spring 16, the pulling hook 6 is connected with the material pressing core 3 through the pulling hook fixing block 5, the return stroke of the material pressing core 3 is slowed down, the blank holder 4 moves upwards to a certain distance, the material pressing core 3 starts to return stroke, the nitrogen spring 9 pushes the sliding block 7 back to the initial position, the sensor 19 senses the displacement of the sliding block 12, and the sliding block 7 cannot return to the initial position when.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a drawing die material pressing core time delay return stroke structure which characterized in that: comprises a pressing core (3), a blank holder (4), a pulling hook (6), a slide block (7) and a nitrogen spring (16), the lower end of the material pressing core (3) is connected with a pulling hook (6) through a pulling hook fixing block (5), the pulling hook (6) is fixedly arranged at the front side of the pulling hook fixing block (5), the side end of the pulling hook (6) is connected with the side end of the sliding block (7) in a sliding way, the slide block (7) is arranged on the wedge guide plate (24) and is in sliding connection with the wedge guide plate, one end of the sliding block (7) far away from the hook-pulling fixed block (5) is in contact with one end of the pulley (12), the other end of the pulley (12) is an inclined plane, and is connected with the lower inclined surface of the driving block (14) in a sliding way, a nitrogen spring (16) is arranged above the driving block (14), the nitrogen spring (16) is fixedly connected with the upper die holder (1) through a nitrogen spring mounting flange (17).

2. The delay return structure of the pressing core of the drawing die as claimed in claim 1, wherein: the pulling and hooking fixing block (5) is arranged above the sliding block (7), and the lower end face of the pulling and hooking fixing block (5) is an inclined plane and is in contact with the opposite face of the sliding block (7).

3. The delay return structure of the pressing core of the drawing die as claimed in claim 1, wherein: slider (7) one side is provided with return stroke nitrogen gas spring (8), return stroke nitrogen gas spring (8) are fixed on return stroke nitrogen gas spring fixing base (9), return stroke nitrogen gas spring (8) are located and pull out and collude (6) below.

4. The delay return structure of the pressing core of the drawing die as claimed in claim 1, wherein: and a pressure bearing pad (11) is fixedly arranged at one end of the pulley (12) which is in contact with the sliding block (7).

5. The delay return structure of the pressing core of the drawing die as claimed in claim 1, wherein: tackle (12) and drive block (14) set up on leading slide (20), tackle (12) and drive block (14) are sliding connection with leading slide (20), it is U type structure to lead slide (20), and the top is provided with apron (21), nitrogen spring (16) lower extreme passes apron (21) and drive block (14) up end contact.

6. The delay return structure of the pressing core of the drawing die as claimed in claim 5, wherein: the upper end of the cover plate (21) is fixedly provided with two limiting blocks (18), and the two limiting blocks (18) are arranged on the left side and the right side below the nitrogen spring mounting flange (17).

7. The delay return structure of the pressing core of the drawing die as claimed in claim 5, wherein: the lower end of the guide sliding plate (20) is provided with a groove (23), a positioning key (22) is arranged in the groove (23), the height of the positioning key (22) is larger than the depth of the groove (23), and the positioning key (22) and the guide sliding plate (20) are fixed on the blank holder (4).

8. The delay return structure of the pressing core of the drawing die as claimed in claim 1, wherein: a sensor (19) is arranged on one side, away from the pulley (12), of the driving block (14), and the sensor (19) penetrates through the driving block (14) to be in contact with the pulley (12).

9. The delay return structure of the pressing core of the drawing die as claimed in claim 1, wherein: fixed first self-lubricating baffle (10) that is provided with slide wedge deflector (24) sliding connection on each terminal surface of slider (7), be provided with on each terminal surface of coaster (12) with lead slide (20) sliding connection's second self-lubricating baffle (13), be provided with on drive block (14) with lead slide (20) sliding connection's third self-lubricating baffle (15).

10. The delay return structure of the pressing core of the drawing die as claimed in claim 1, wherein: the wedge guide plate (24) is fixedly arranged on the blank holder (4), and the blank holder (4) is arranged on the lower die base (2) through a spring (25).