CN218108962U

CN218108962U - Core-pulling bending mechanism

Info

Publication number: CN218108962U
Application number: CN202221869314.1U
Authority: CN
Inventors: 王长土
Original assignee: Wuhan Changhua Changyuan Auto Parts Co ltd
Current assignee: Wuhan Changhua Changyuan Auto Parts Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-12-23
Anticipated expiration: 2032-07-19

Abstract

The utility model relates to the technical field of automobile part processing, in particular to a core-pulling bending mechanism, which comprises an upper die base and a lower die base, wherein a die core fixing base is assembled on the lower die base, a horizontally arranged die core is arranged on the die core fixing base, and the die core is used for supporting and carrying a workpiece; the bottom of the upper die base is provided with two groups of bending punches, and the motion paths of the two groups of bending punches are respectively opposite to two bending points of the workpiece and are used for driving the workpiece to be bent and formed around the die core. The workpiece to be processed is placed in advance through the arranged die core, the upper die base is pressed downwards through the transmission of the press machine, under the punching of the two groups of bending punches, two bending points of the 45-degree automobile part can be synchronously bent along the die core, the processing of the workpiece can be realized at one time, and the efficiency is obviously improved.

Description

Core-pulling bending mechanism

Technical Field

The utility model relates to an auto parts processing technology field specifically is a mechanism of bending of loosing core.

Background

In the processing process of automobile workpieces, a stamping die is often needed to stamp the workpieces. In the stamping production process, a simplex Cheng Shewan is adopted by a mould, and because a plurality of bending points exist in the processing process of certain workpieces, the workpieces need to be bent for multiple times, and each bending needs to be manually placed on a corresponding mould core; for example, when two bending points of a 45-degree automobile part are both bent by 90 degrees (see fig. 7 in particular), the two bending points need to be positioned twice manually and then are subjected to punch forming respectively, so that the whole production efficiency is relatively low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, provide a loose core mechanism of bending and solve the problem that above-mentioned work piece machining efficiency is low of bending.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a core-pulling bending mechanism comprises an upper die holder and a lower die holder, wherein a die core fixing seat is assembled on the lower die holder, a horizontally arranged die core is arranged on the die core fixing seat, and the die core is used for supporting a workpiece; the bottom of the upper die base is provided with two groups of bending punches, and the motion paths of the two groups of bending punches are respectively opposite to two bending points of the workpiece and are used for driving the workpiece to be bent and formed around the die core.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the die core fixing seat is in sliding fit with the lower die seat; the bottom of the upper die holder is also provided with a slotting tool which is right opposite to the die core fixing seat, and the slotting tool can press the die core fixing seat downwards to drive the die core fixing seat to move along the length direction of the die core; and the lower die base is also provided with a rebound assembly for driving the die core fixing base to return.

Further, the slotting tool bottom is formed with first scarf, be formed with the second scarf that matches with first scarf on the mold core.

Furthermore, the springback component comprises a front stop block and a rear stop block which are respectively distributed along the front end and the rear end of the moving path of the mold core fixing seat; and a reset spring horizontally supported is arranged between the front stop block and the die core fixing seat.

Furthermore, a pressing plate penetrated by the bending punch and the slotting tool is arranged right below the upper die base; and a compression spring is arranged between the pressing plate and the upper die base and used for pushing the pressing plate to press a workpiece on the die core.

Further, the mold core includes an upper bearing surface, a lower shaping surface and shaping surfaces positioned at the left side and the right side.

The utility model has the advantages that: the utility model relates to a loose core mechanism of bending places the work piece that needs processing in advance through the mold core that sets up, makes the upper die base push down through the press transmission, under two sets of punches of bending, can realize that two bending points of 45 auto parts bend along the mold core in step, can once realize the processing of work piece, and efficiency is showing and is promoting.

Drawings

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

FIG. 2 is a schematic view of the partial structure of the mold-opened state of the present invention;

fig. 3 is a schematic view of a partial structure of the mold closing state of the present invention;

fig. 4 is an enlarged view of a portion a of fig. 3 according to the present invention;

fig. 5 is an internal cross-sectional view of the mold opening and closing state of the present invention (fig. 5a is the mold opening state, and fig. 5b is the mold closing state);

fig. 6 is an internal cross-sectional view of the mold opening and closing state of the present invention (fig. 6a is the closing state, and fig. 6b is the opening state);

fig. 7 is a schematic view of a machining state of a conventional 45-degree automobile part.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an upper die holder, 2, a lower die holder, 3, a die core fixing seat, 4, a die core, 401, an upper bearing surface, 402, a lower fixed surface, 403, a forming surface, 5, a bending punch, 6 and a slotting tool, 601, a first chamfer, 602, a second chamfer, 7, a front stop, 8, a rear stop, 9, a return spring, 10, a pressing and fixing plate, 11, a pressing spring, 12 and a workpiece.

Detailed Description

The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration only and are not intended to limit the scope of the invention.

It should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are intended to be construed broadly, as if they were connected either fixedly or removably, or as integrally formed structures. To those of ordinary skill in the art, the specific meaning of such terms in this patent may be understood as appropriate.

The embodiment of the utility model is as follows

As shown in fig. 1 to 4, the core-pulling bending mechanism of the present utility design includes an upper die holder 1 and a lower die holder 2, wherein the upper die holder 1 is mounted on a press machine, and the lower die holder 2 is arranged right below the upper die holder 1; a mold core fixing seat 3 is assembled on the lower mold seat 2, a mold core 4 which is horizontally arranged is arranged on the mold core fixing seat 3, and the mold core 4 is used for supporting and carrying a workpiece; two groups of bending punches 5 are installed at the bottom of the upper die base 1, and the moving paths of the two groups of bending punches 5 are respectively opposite to two bending points of a workpiece and are used for driving the workpiece to be bent and formed around the die core 4. The workpiece to be processed is placed in advance through the arranged mold core 4, the upper mold base 1 is pressed downwards through the transmission of the press machine, under the punching of the two groups of bending punches 5, two bending points of the 45-degree automobile part can be synchronously bent along the mold core 4, the processing of the workpiece can be realized at one time, and the efficiency is obviously improved. The workpiece forming process can be seen in fig. 5 and 6.

Specifically, referring to the drawing, the mold core 4 includes an upper bearing surface 401, a lower molding surface 402 and molding surfaces 403 on the left and right sides, and during the process of pre-placing the workpiece, two bending points of the workpiece need to be located at the turning point of the upper bearing surface 401 and the two molding surfaces 403, so as to ensure that the bent portion of the workpiece is accurately bent along the molding surfaces 403 when the bending punch 5 punches the workpiece.

As an embodiment, the mold core fixing seat 3 is in sliding fit with the lower mold seat 2, and the sliding direction is horizontal; the bottom of the upper die base 1 is also provided with a slotting tool 6 which is just opposite to the die core fixing base 3, the slotting tool 6 can press the die core fixing base 3 downwards to drive the die core fixing base 3 to move along the length direction of the die core 4, and the slotting tool 6 extrudes the die core fixing base 3 by utilizing the pressure generated when the upper die base 1 presses downwards so as to generate the thrust in the horizontal direction, so that the whole die core fixing base 3 is driven to enter the punching position of the die core fixing base 3. Still be equipped with the resilience subassembly of 3 playback of drive mold core fixing base on the die holder 2, after the punching press finishes, slotting tool 6 shifts up, and under the drive of the subassembly that kick-backs this moment for 3 playback of drive mold core fixing base, so that take out the work piece after the shaping on the mold core 4.

Specifically, 6 bottoms of slotting tool are formed with first scarf 601, be formed with the second scarf 602 that matches with first scarf 601 on the mold core 4, when slotting tool 6 pushed down and just contacted mold core fixing base 3, first scarf 601 and second scarf 602 produced relative movement to convert the vertical pressure of slotting tool 6 into to the horizontal thrust of mold core fixing base 3.

Specifically, the springback component comprises a front stop block 7 and a rear stop block 8 which are respectively distributed along the front end and the rear end of the moving path of the die core fixing seat 3 and are used for limiting the moving distance of the die core fixing seat 3; a horizontally supported return spring 9 is arranged between the front stop dog 7 and the die core fixing seat 3, and the die core fixing seat 3 moves towards the front stop dog 7 and compresses the return spring 9 simultaneously in the stamping process; after the punching is finished, the return spring 9 pushes the die core fixing seat 3 to the backward stop block 8 until the die core fixing seat returns to the original position.

As an embodiment, a pressing plate 10 penetrated by the bending punch 5 and the slotting tool 6 is further arranged right below the upper die holder 1, and a guide through groove for the bending punch 5 and the slotting tool 6 to pass through is correspondingly formed in the pressing plate 10; a compression spring 11 is arranged between the pressing plate 10 and the upper die base 1 and used for pushing the pressing plate 10 to compress a workpiece on the die core 4, and in the process of pressing down the upper die base 2, the pressing plate 10 can compress the workpiece firstly and is pressed more and more tightly under the support of the compression spring 11, so that the workpiece is prevented from shaking in the subsequent punching process; when the punching is finished, the die core fixing seat 3 can drive the die core 4 to return, at the moment, the pressing and fixing plate 10 still removes the workpiece under the support of the pressing spring 11, and the die core 4 horizontally moves relative to the pressing and fixing plate 10, so that the workpiece is automatically driven along the die core 4 under the friction force between the pressing and fixing plate 10 and the surface of the workpiece, the automatic material taking is realized, and the working efficiency is further improved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A core-pulling bending mechanism comprises an upper die holder (1) and a lower die holder (2), wherein a die core fixing seat (3) is assembled on the lower die holder (2), and is characterized in that a horizontally arranged die core (4) is arranged on the die core fixing seat (3), and the die core (4) is used for supporting a workpiece; two groups of bending punches (5) are installed at the bottom of the upper die base (1), and the motion paths of the two groups of bending punches (5) are respectively opposite to two bending points of a workpiece and are used for driving the workpiece to be bent and formed around the die core (4).

2. The core-pulling bending mechanism according to claim 1, wherein the mold core fixing seat (3) is in sliding fit with the lower mold seat (2); the bottom of the upper die holder (1) is also provided with a slotting tool (6) which is right opposite to the die core fixing seat (3), and the slotting tool (6) can press the die core fixing seat (3) downwards to drive the die core fixing seat to move along the length direction of the die core (4); and the lower die holder (2) is also provided with a rebound component for driving the die core fixing seat (3) to return.

3. The core-pulling bending mechanism according to claim 2, characterized in that a first chamfer (601) is formed at the bottom end of the slotting tool (6), and a second chamfer (602) matched with the first chamfer (601) is formed on the mold core (4).

4. The core-pulling bending mechanism according to claim 2, wherein the rebound assembly comprises a front stop block (7) and a rear stop block (8) which are respectively distributed along the front end and the rear end of the moving path of the mold core fixing seat (3); and a return spring (9) horizontally supported is arranged between the front stop block (7) and the mold core fixing seat (3).

5. The core-pulling bending mechanism according to claim 2, wherein a press-fixing plate (10) penetrated by the bending punch (5) and the slotting tool (6) is further arranged right below the upper die holder (1); and a compression spring (11) is arranged between the compression plate (10) and the upper die base (1) and used for pushing the compression plate (10) to compress a workpiece on the die core (4).

6. The core back bending mechanism according to any one of claims 1 to 5, wherein the mold core (4) comprises an upper bearing surface (401), a lower molding surface (402) and molding surfaces (403) on the left and right sides.