CN110935799A

CN110935799A - Tapered wedge mechanism

Info

Publication number: CN110935799A
Application number: CN201911217697.7A
Authority: CN
Inventors: 张龙; 刘永根; 刘峰; 王淑俊; 吕占
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-03-31

Abstract

The invention discloses a wedge mechanism, which comprises an upper die base, a lower die base, a main material pressing core, a side material pressing core and a side flanging insert, wherein the main material pressing core provides downward positive pressure for a part to be processed; the side material pressing core is arranged on the upper die base and used for obliquely and downwards moving to abut against the part to be processed when the upper die base downwards presses, so that lateral pressure is provided for the part to be processed; the side flanging insert is arranged on the upper die base, and the side flanging insert is used for moving towards the part to be processed after the main material pressing core and the side material pressing core are abutted against the part to be processed when the upper die base punches downwards so as to perform side flanging on the part to be processed. Through the setting of side pressure core, for waiting to process the part and provide lateral pressure, further compress tightly and wait to process the part, effectively improved the quality of side turn-ups.

Description

Tapered wedge mechanism

Technical Field

The invention relates to the technical field of stamping dies, in particular to a wedge mechanism.

Background

The quality of an automobile body covering part usually directly determines the appearance quality of an automobile model, and obtaining a high-quality automobile body covering part is the target of each automobile manufacturer, however, in many times, due to reasons such as unreasonable structural design of a die and the like, the product directly generates surface defects such as deformation and the like after stamping is completed, and even if a large amount of later debugging and rectification are carried out, satisfactory surface quality cannot be achieved.

In the prior art, as shown in fig. 1, a part is placed on a male die, an upper die moves downwards to drive a material pressing core A to compress the part in a forward direction, and then a side flanging insert B performs flanging or shaping work on the part. When the material is pressed, the pressing force of the pressing core A on the position close to the part to be flanged is small, so that the side flanging insert B deforms at the position in the flanging process, and the appearance quality of the automobile body is affected.

Disclosure of Invention

The invention mainly aims to provide a wedge mechanism, and aims to solve the problem that the existing wedge mechanism cannot provide lateral pressure for a part to be processed.

In order to achieve the above object, the present invention provides a wedge mechanism for performing a side flanging on a part, the wedge mechanism including an upper die holder and a lower die holder, the upper die holder having a stamping direction moving downward toward the lower die holder, the lower die holder being provided with an installation location for placing the part to be processed, the wedge mechanism further including:

the main material pressing core is arranged on the upper die base and used for moving downwards to abut against the part to be processed when the upper die base performs downward stamping so as to provide downward positive pressure for the part to be processed;

the lateral pressing core is arranged on the upper die base and used for obliquely and downwards moving to abut against the part to be processed when the upper die base downwards presses, so that lateral pressure is provided for the part to be processed; and the number of the first and second groups,

the side flanging insert is arranged on the upper die base, and the side flanging insert is used for moving towards the part to be processed after the main material pressing core and the side material pressing core are abutted against the part to be processed when the upper die base punches downwards so as to perform side flanging on the part to be processed.

Optionally, the cam mechanism further comprises:

the driving block is fixedly arranged on the lower die base, one side of the driving block, which is far away from the lower die base, is provided with a sliding rail, and the sliding rail is arranged in a manner of inclining and extending downwards towards the mounting position;

the holding block is fixedly arranged on the upper die base; and the number of the first and second groups,

the sliding block is slidably arranged on one side, away from the upper die base, of the retaining block, the side material pressing core is arranged on one side, away from the retaining block, of the sliding block, and a sliding rod is arranged on the sliding block and used for being matched with the sliding rail, so that when the upper die base punches downwards, the side material pressing core is driven to move downwards obliquely to abut against a part to be processed.

Optionally, the side flanging insert is fixedly mounted on one side of the slide block, which is far away from the holding block, and the side material pressing core protrudes out of the side flanging insert in the direction toward the mounting position;

the side material pressing core is arranged in a telescopic mode in the direction towards the installation position.

Optionally, the wedge mechanism further comprises a driving cylinder, the driving cylinder is fixedly mounted on one side of the sliding block, which is far away from the holding block, and a driving shaft of the driving cylinder is connected with the side material pressing core.

Optionally, the drive cylinder is a nitrogen cylinder.

Optionally, a guide post is arranged on one side, facing the side material pressing core, of the sliding block, and a guide sleeve matched with the guide post is arranged on the side material pressing core.

Optionally, the guide post and the guide sleeve are correspondingly provided with multiple groups.

Optionally, a limiting member is disposed on one side of the slider facing the side pressing core to prevent the side pressing core from falling off.

Optionally, the wedge mechanism further comprises a male die, the male die is arranged on the lower die holder, and the mounting position is formed on the male die.

According to the technical scheme, the wedge mechanism comprises a main pressing core, a side pressing core and a side flanging insert, the main pressing core is driven by an upper die base to move downwards to provide forward pressure for a part to be processed, then the side pressing core provides lateral pressure for the part to be processed simultaneously, and finally the side flanging insert carries out side flanging on the part to be processed, so that the side flanging position of the part to be processed is not prone to deformation, and the quality of the side flanging is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a prior art cam mechanism;

FIG. 2 is a schematic view of the non-operating structural state of an embodiment of the cam mechanism provided in the present invention;

FIG. 3 is a schematic view of the cam mechanism provided in FIG. 2 in an operative configuration;

FIG. 4 is a side view of the cam mechanism provided in FIG. 3 in an operative configuration;

FIG. 5 is a schematic diagram of the operation of the cam mechanism provided in FIG. 2;

FIG. 6 is an enlarged partial view of the cam mechanism provided in FIG. 2;

FIG. 7 is an exploded perspective view of a portion of the cam mechanism provided in FIG. 5;

FIG. 8 is a schematic cross-sectional view of a partial structure of the cam mechanism provided in FIG. 5;

the reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Wedge mechanism	151	Guide post
1	Upper die holder	152	Driving cylinder
				11	Main material pressing core	153	Position limiting piece
12	Side pressing core	2	Lower die holder
				121	Guide sleeve	21	Driving block
13	Side flanging insert	211	Sliding rail
				14	Holding block	22	Male die
15	Sliding block

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

When the existing wedge mechanism presses materials, the material pressing force of the material pressing core on the position close to the position to be flanged is small, so that the side flanging insert deforms at the position in the flanging process. Fig. 2 to 8 are schematic structural diagrams of an embodiment of a wedge mechanism provided in the present invention, and in the embodiment, the wedge mechanism is used to perform side flanging on a part to be processed.

In the embodiment of the present invention, as shown in fig. 2 to 4, the wedge mechanism 100 is configured to perform side flanging on a part, the wedge mechanism includes an upper die holder 1 and a lower die holder 2, the upper die holder 1 has a stamping direction moving downward toward the lower die holder 2, the lower die holder 2 is provided with an installation position for placing the part to be processed, the wedge mechanism 100 further includes a main material pressing core 11, a side material pressing core 12 and a side flanging insert 13, the main material pressing core 11 is installed on the upper die holder 1, and is configured to move downward to abut against the part to be processed when the upper die holder 1 stamps downward, so as to provide a downward forward pressure for the part to be processed; the side material pressing core 12 is arranged on the upper die holder 1 and used for obliquely and downwardly moving to abut against the part to be processed when the upper die holder 1 performs downward stamping so as to provide lateral pressure for the part to be processed; the side flanging insert 13 is arranged on the upper die base 1 and used for moving towards the part to be processed after the main material pressing core 11 and the side material pressing core 12 are abutted against the part to be processed when the upper die base 1 punches downwards so as to perform side flanging on the part to be processed.

By the arrangement of the side pressing core 12, lateral pressure is applied to the part to be machined, namely, when the side flanging is carried out, the upper die base 1 moves downwards, the main pressing core 11 is firstly driven to be in contact with the part to be machined, and positive pressure is provided for the part to be machined; the upper die holder 1 continues to move downwards, the side pressure material core 12 is in contact with the part to be machined to provide lateral pressure for the part to be machined, and finally the side flanging insert 13 is used for side flanging the part to be machined, so that the side flanging position of the part to be machined is not easy to deform, and the quality of the side flanging is effectively improved.

Further, in order to enable the side material core 12 to laterally press the part to be processed, the wedge mechanism 100 further includes a driving block 21, a holding block 14 and a sliding block 15, the driving block 21 is fixedly mounted on the lower die holder 2, a sliding rail 211 is arranged on one side of the driving block 21 away from the lower die holder 2, and the sliding rail 211 extends obliquely and downwardly toward the mounting position; the holding block 14 is fixedly arranged on the upper die holder 1; the slide block 15 is slidably mounted on a side of the holding block 14 away from the upper die holder 1, the side material pressing core 12 is disposed on a side of the slide block 15 away from the holding block 14, and a slide rod (not shown) is disposed on the slide block 14 and is used for cooperating with the slide rail 211, so that when the upper die holder 1 punches downwards, the side material pressing core 12 is driven to move obliquely downwards to abut against the part to be processed.

Referring to fig. 5, the main pressing core 11 is now in contact with the part to be processed, the upper die holder 1 continues to descend, and the sliding block 15 is first in contact with the driving block 21. The upper die holder 1 continues to move downwards, at this time, since the driving block 21 and the holding block 14 are fixed, the sliding rod of the sliding block 15 is matched with the sliding rail 211, and the sliding block 15 moves downwards along the sliding rail 211 in an inclined manner. Therefore, the driving block 21 provides an upward pushing force to the sliding block 15, and then the sliding block 15 moves obliquely upward along the contact position of the holding block 14 and the sliding block 15, because the upper die holder 1 drives the sliding block 15 and the holding block 14 to move downward integrally, so that the sliding block 15 moves obliquely downward as a whole. The side material pressing cores 12 are arranged on the sliding blocks 15, so that when the upper die holder 1 moves downwards, the side material pressing cores 12 also move downwards in an inclined mode, and therefore side pressure is provided for parts to be processed.

Specifically, as shown in fig. 6, the side flanging insert 13 is fixedly mounted on the side of the slide block 15 away from the holding block 14, and the side core 12 is arranged to protrude from the side flanging insert 13 in the direction toward the mounting position; the side material pressing core is arranged in a telescopic mode in the direction towards the installation position. As shown in fig. 5, when the wedge mechanism 100 is not operated, or before the side flanging operation starts, the side pressure cores 12 protrude from the side flanging inserts 13, so that when the upper die holder 1 drives the side pressure cores 12 and the side flanging inserts 13 to move obliquely downward, the side pressure cores 12 first contact with the part to be machined. When the upper die holder 1 continues to move downwards, the side material core 12 is compressed to perform lateral pressure on a part to be processed, and then the side flanging insert 13 is in contact with the part to be processed to perform side flanging.

The side pressure core 12 can be telescopically arranged in a direction toward the installation position, and in this embodiment, the side pressure core is realized by installing a driving cylinder 152, please refer to fig. 7, the driving cylinder 152 is fixedly installed at a side of the slide block 15 far away from the holding block 14, and a driving shaft of the driving cylinder 152 is connected with the side pressure core 12. Before flanging is carried out, when the side material pressing core 12 is in contact with a part to be machined, the driving air cylinder 152 applies pressure to the side material pressing core 12, so that the side material pressing core 12 is compressed, and the side material pressing core 12 laterally compresses the part to be machined. After the flanging operation is completed, the upper die base 1 starts to move upwards, the side flanging insert 13 is firstly separated from the part to be machined, then the side material core 12 is separated from the part to be machined, the upper die base 1 continues to move upwards, the driving cylinder 152 pushes the side material core 12 to complete the opening state, namely, the side material core 12 returns to the direction towards the installation position, and the side material core 12 protrudes out of the side flanging insert 13. Preferably, the driving cylinder 152 is a nitrogen cylinder.

In addition, a guide post 151 is provided on the side of the slider 15 facing the side core 12, and a guide sleeve 121 engaged with the guide post 151 is provided on the side core 12. The guide posts 151 are matched with the guide sleeve 121 to play a role in guiding and lubricating so as to ensure the moving direction of the side material pressing plate 12. Preferably, the guide posts 151 and the guide sleeve 121 are correspondingly provided with a plurality of groups, so that the guide effect is better.

Further, a stopper 153 is provided on the side of the slider 15 facing the side core 12 to prevent the side core 12 from falling off. Referring to fig. 8, a gap is formed between the side pressure core 12 and the limiting member 153, and when the wedge mechanism 100 operates, the side pressure core 12 moves to the right, that is, the side pressure core 12 is compressed. When the wedge mechanism 100 does not work, the side pressure core 12 is opened, that is, the side pressure core 12 moves leftward, and the protrusion of the limiting member 153 may block the side pressure core 12 and prevent the side pressure core 12 from falling off. In this embodiment, the limiting member 153 is a bolt fixed on the sliding block 15, and a nut of the bolt plays a limiting role. Obviously, the design is not limited to this, and in other embodiments, a cylinder may be welded to the sliding block, and the upper end of the cylinder may have a protrusion for limiting.

In addition, the wedge mechanism 100 further comprises a male die 22, the male die 22 is arranged on the lower die holder 2, and the mounting position is formed on the male die 22. The punch 22 is used for placing the part to be machined.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a slide wedge mechanism for carry out the side turn-ups to the part, slide wedge mechanism includes upper die base and die holder, the upper die base has downward orientation the punching press direction of die holder motion, be equipped with the mounted position that is used for placing the part of treating processing on the die holder, its characterized in that, slide wedge mechanism still includes:

2. The cam mechanism of claim 1, further comprising:

the retaining block is fixedly arranged on the upper die base, and a sliding rail is arranged at the contact position of the retaining block and the sliding block; and the number of the first and second groups,

3. The cam mechanism of claim 2, wherein said side flange insert is fixedly mounted to a side of said slide remote from said holding block, said side core projecting beyond said side flange insert in a direction toward said mounting location;

4. The cam mechanism of claim 3, further comprising a drive cylinder fixedly mounted to a side of the slide block remote from the holding block, a drive shaft of the drive cylinder being coupled to the side die core.

5. The cam mechanism of claim 4, wherein said drive cylinder is a nitrogen cylinder.

6. The cam mechanism according to claim 2, wherein a guide post is provided on a side of the slider facing the side core, and a guide sleeve engaged with the guide post is provided on the side core.

7. The cam mechanism according to claim 6, wherein a plurality of sets of the guide posts and the guide sleeves are provided correspondingly.

8. The cam mechanism according to claim 2, wherein a stopper is provided on a side of said slider facing said side die to prevent said side die from falling off.

9. The cam mechanism of claim 1, further comprising a punch disposed on the lower die base, wherein the mounting location is formed on the punch.