CN205085254U - Novel mould press synchronous return stroke of material core device - Google Patents

Abstract

The utility model relates to a novel mold pressing core synchronous return device and its mold. The first return nitrogen cylinder (1) is arranged on the first forced drive (2) and the end of its working part is connected to the first forced drive. On the horizontal stroke block (22) of (2), the right end of the horizontal stroke block (22) is connected to the limit block (5) on the left side, and the limit block (5) is arranged on the stroke track (8). The second forced drive (6) is arranged on the right side of the stroke track (8), and the second return nitrogen cylinder (7) is set on the second forced drive (6); the first forced drive (2), the stroke track (8) and The second forced drive (6) is successively installed closely on the blank holder ring (102) of the lower mold of the mold, and the driving nitrogen cylinder (3) is installed on the upper mold of the mold and is connected with the vertical drive block (23) of the first forced drive (2). ) to work together, and the working limit insert (4) is installed on the upper mold pressing material core (101) and cooperates with the limit block (5).

Description

A new type of mold pressing core synchronous return device and its mold

technical field

The utility model belongs to the technical field of secondary drawing dies for automobile stamping parts, and in particular relates to a novel die pressing core synchronous return device and a die.

Background technique

At present, all automobile OEMs use the secondary drawing process to ensure the appearance quality of parts with large fluctuations in the profile of stamping parts or parts with deep drawing depth. However, the existing secondary drawing molds have higher requirements on the press, and the press with the cylinder lock function must be used for production; the price of the press with the cylinder lock function is generally higher, thus increasing the cost of stamping parts in disguise.

Contents of the invention

The utility model designs a new mold pressing core synchronous return device and its mould. This mechanism is installed on the secondary drawing mold to reduce the requirements of the secondary drawing mold on the press machine, that is, without reducing the product quality. In the case of secondary drawing, the mold for secondary drawing can be produced on a press without cylinder lock function.

In order to solve the above-mentioned technical problems, the utility model adopts the following scheme:

A new type of mold pressing core synchronous return device, including the first return nitrogen cylinder (1), the first forced drive (2), the driving nitrogen cylinder (3), the working limit insert (4), the limit block ( 5), the second forced drive (6), the second return nitrogen cylinder (7) and the stroke track (8), the first return nitrogen cylinder (1) is set on the first forced drive (2) and the end of its working part The part is connected to the horizontal stroke block (22) of the first forced drive (2), the right end of the horizontal stroke block (22) is fixedly connected with the left side of the limit block (5), and the limit block (5) is set on on the stroke track (8) and can slide along the track, the second forced drive (6) is set on the right side of the stroke track (8), and the second return nitrogen cylinder (7) is set on the second forced drive (6) to The right side of the limit block (5) cooperates; the first forced drive (2), the travel track (8) and the second forced drive (6) are successively installed closely on the lower die ring (102) of the mold to drive nitrogen The cylinder (3) is installed on the upper mold of the mold to cooperate with the vertical drive block (23) of the first forced drive (2), and the stroke of the driving nitrogen cylinder (3) is greater than the working stroke of the upper mold pressing core (101). The working limit insert (4) is installed on the upper mold pressing material core (101) to cooperate with the limit block (5).

Further, the first forced drive (2) also includes a casing (21), a horizontal stroke block (22) and a vertical drive block (23) are installed in the casing (21) through the guide holes on the casing (21), and the horizontal stroke block The right end of (22) protrudes out of the shell (21) and is fixedly connected with the left side of the limit block (5), and the upper end of the vertical drive block (23) protrudes out of the upper end surface of the shell (21) to drive the nitrogen cylinder (3) Working together, the left end face of the horizontal stroke block (22) and the lower end face of the vertical drive block (23) are processed into inclined planes and work together to form a wedge mechanism; the first return nitrogen cylinder (1) is set in the shell ( 21) on.

Further, the left end face of the horizontal stroke block (22) and the lower end face of the vertical drive block (23) are both processed into inclined planes inclined at an angle of 45°.

Further, the lower end of the shell (21) is also processed with a groove structure, and the limit key (9) is tightly inserted into the space enclosed by the groove structure of the shell (21) and the groove of the lower mold blank holder (102) to eliminate lateral force.

Further, when the working limit insert (4) and the limit block (5) work together, the limit block (5) is in contact with the bottom surface of the work limit insert (4), and the limit block (5) and the work limit insert ( 4) There is an angle of 5° between the corresponding pair of contact surfaces.

Further, a forced return hook (41) is also provided on the limit insert (4).

Further, the second return nitrogen cylinder (7) is set on the second forced drive (6), and the end of the working part of the second return nitrogen cylinder (7) always exceeds the left end surface of the second forced drive (6) to be in line with the limit Block (5) right side cooperates work.

A mold, characterized in that it includes any one of the mold pressing core synchronous return devices described above.

Further, there are 4 or more synchronous return devices for the pressing core of the mold.

The novel mold pressing core synchronous return device has the following beneficial effects:

The utility model has the advantages of simple manufacturing and processing technology, convenient operation, long service life and low maintenance cost. The most important thing is that it can reduce the requirements of the secondary calendering die on the press, thereby reducing the cost of stamping parts.

Description of drawings

Figure 1: A schematic diagram of the three-dimensional structure of the mold pressing core synchronous return device of the utility model;

Figure 2: A schematic diagram of the two-dimensional structure of the mold pressing core synchronous return device of the utility model;

Fig. 3: Schematic diagram of the structure of the medium return nitrogen cylinder of the utility model;

Figure 4: Structural schematic diagram I of the first forced drive in the utility model;

Figure 5: Structural schematic diagram II of the first forced drive in the utility model;

Figure 6: Schematic diagram of the structure of the limit block in the utility model;

Figure 7: Schematic diagram of the structure of the medium stroke guide rail of the utility model;

Figure 8: Structural schematic diagram of the second forced drive in the utility model;

Figure 9: Schematic diagram of the structure of the working limit insert in the utility model;

Figure 10: Schematic diagram of the installation structure of the mold press core synchronous return device on the mold of the utility model.

Explanation of reference signs:

1—first return nitrogen cylinder; 2—first forced drive; 21—housing; 22—horizontal travel block; 23—vertical drive block; 3—drive nitrogen cylinder; 4—working limit insert; 41—forced return Hook; 5—limiting block; 6—second forced drive; 7—second return nitrogen cylinder; 8—travel track; 9—limit key; 101—upper mold pressing material core;

detailed description

Below in conjunction with accompanying drawing, the utility model is described further:

Figures 1 to 10 show a mold pressing core synchronous return device and its mold, including the first return nitrogen cylinder 1, the first forced drive 2, the driving nitrogen cylinder 3, the working limit insert 4, the limit Block 5, second forced drive 6, second return nitrogen cylinder 7 and stroke track 8. The first return nitrogen cylinder 1 is arranged on the shell 21 of the first forced drive 2 and the end of the working part passes through the through hole of the shell 21 and is connected to the horizontal stroke block 22 of the first forced drive 2, the right end of the horizontal stroke block 22 The end protrudes from the shell 21 and is connected to the left side of the limit block 5 by bolts. The limit block 5 is stuck in the track of the stroke track 8 through the notch at the bottom and can slide along the track. The first forced drive 2, the stroke Both the track 8 and the second forced drive 6 are installed closely on the blank holder 102 of the mold lower mold in sequence through bolts, and the driving nitrogen cylinder 3 is installed on the upper mold of the mold through bolts to cooperate with the vertical drive block 23 of the first forced drive 2 Working, the working limit insert 4 is installed on the upper mold pressing material core 101 by bolts and cooperates with the limit block 5 .

The first forced drive 2 includes a casing 21, a horizontal travel block 22 and a vertical drive block 23, the left end face of the horizontal travel block 22 and the lower end face of the vertical drive block 23 are all processed into a slant at an angle of 45° and cooperate to form an inclined plane. The wedge mechanism can drive the horizontal stroke block 22 to move horizontally through the wedge structure when the vertical drive block 23 is pressed down. On the contrary, when the horizontal stroke block 22 moves horizontally in reverse, the vertical drive block 23 can be pushed upward by the wedge structure. Horizontal travel block 22 and vertical drive block 23 are installed in the shell 21 by the guide hole on the shell 21, and the upper end of vertical drive block 23 stretches out shell 21 to cooperate with drive nitrogen cylinder 3 to work, and drive nitrogen cylinder 3 is arranged on drive Block 23 above.

The first return nitrogen cylinder 1 is installed on the shell 21 by bolts and the end of the working part is connected to the horizontal stroke block 22 through the through hole of the first forced drive 2, and the right end of the horizontal stroke block 22 stretches out of the shell 21 And be connected with the left side of bolt and limit block 5, limit block 5 is stuck in the track of travel track 8 by the notch of bottom and can slide along track; The second forced drive 6 is positioned at the right side of travel track 8, namely On the right side of the limit block 5, the second return nitrogen cylinder 7 is installed on the second forced drive 6 through the installation hole on the second forced drive 6, and the end of the working part of the second return nitrogen cylinder 7 always exceeds the second forced drive. Drive the left side end face of 6, during the return stroke, the end of the working part of the second return nitrogen cylinder 7 drives the stopper 5 to play the effect of the return stroke. The second forced drive 6, the stroke track 8, and the first forced drive 2 are all installed in sequence on the blank holder 102 of the lower die of the mold through bolts. The lower end of the shell 21 is processed with a groove structure, and the limit key 9 is tightly inserted into the shell. 21 groove structure and the space formed by the groove of the lower mold binder ring 102 to eliminate lateral force. The driving nitrogen cylinder 3 is installed on the upper mold of the mold through bolts, and the working limit insert 4 is installed on the pressing material core 101 of the upper mold through bolts. The limiting insert 4 is also provided with a forced return hook 41 .

After the mold is manufactured, processed and adjusted, during the secondary drawing process of the workpiece, one or more synchronous return strokes are respectively loaded at the appropriate positions at the four corners of the upper mold core 101 and the lower mold edge ring 102 device. When the press starts to work, the slider of the press drives the upper mold and the upper mold pressing material core 101 to move downward, and the upper mold pressing material core 101 starts to contact the lower mold body before reaching the safe distance before the workpiece stroke to play the role of pressing material. , the upper mold and the upper mold pressing material core 101 continue to move downward to carry out the secondary drawing of the workpiece. During the secondary drawing of the workpiece, the nitrogen cylinder 3 is driven to push the vertical driving block 23 to move downward, Thereby driving the horizontal travel block 22 to move to the right, the horizontal travel block 22 pushes the limit block 5 to move to the right according to the travel track 8 . When the upper and lower molds are closed (that is, after the workpiece is drawn to the end for the second time), the limit block 5 moves to the second forced drive 6, and the limit block 5 is in contact with the bottom surface of the working limit insert 4, and the limit block 5 and There is an included angle of 5° between the corresponding pair of contact surfaces on the working limit insert 4, and this angle is in the horizontal direction. 5. The safety margin for moving in the left and right direction, that is, the limit block 5 and the working limit insert 4 can be fully contacted, and it can be ensured that the space between the limit block 5 and the working limit insert 4 will not be completely crushed to death. This angle can make the stroke enough to complete the mold pulling and pressing to the end, and complete the work of a stroke after the stop block 5 is in full contact with the work limit insert 4 .

When the press returns, the upper slider of the press moves upward to drive the upper mold body to move upward at the same time, and the upper mold pressing core 101 also moves upward along with the upper mold due to the air cushion pressure of the press and the separation process of the upper mold; The stroke of nitrogen cylinder 3 is greater than upper mold pressing material core 101 work strokes, so the vertical driving block 23 is stressed all the time before the working side pin on the upper mold pressing material core 101 is stressed so that stop block 5 can not return. The upward movement of the lower mold binder ring 102 drives the limit block 5 and the working limit insert 4 to always contact during the secondary drawing stroke of the workpiece, so that the lower mold binder ring 102 and the upper mold pressing material core 101 move upward synchronously . When the ejector rod of the press reaches the apex of the stroke, the edge ring 102 of the lower mold stops moving upward, and the upper slider of the press drives the upper mold to continue to move upward. The core 101 moves upward, and the limit block 5 and the working limit insert 4 are separated after exceeding the secondary drawing stroke of the workpiece, so as to ensure that the secondary drawn workpiece will not be deformed by the top of the lower mold pressing material core, and ensure that the workpiece Quality: With the upward movement of the upper die, the driving nitrogen cylinder 3 no longer exerts force on the vertical drive block 23, and the first return nitrogen cylinder 1 and the second return nitrogen cylinder 7 work simultaneously to make the limit block 5 and the first forced drive The horizontal travel block 22 in the device 2 returns and drives the vertical drive block 23 to reach the initial state at the same time. During the return process, if the first return nitrogen cylinder 1 and the second return nitrogen cylinder 7 are damaged at the same time and cannot work, the forced return hook 41 will force the limit block 5 to move outward according to the movement direction of the slider of the press, and the forced return will be Ensure the safety of work equipment.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the realization of the utility model is not limited by the above-mentioned method, as long as various improvements of the method concept and technical solutions of the utility model are adopted, or the utility model is not improved. Directly applying the conception and technical solutions of the utility model to other occasions is within the protection scope of the utility model.

Claims (10)

1. A new type of mold pressing core synchronous return device, characterized in that it includes the first return nitrogen cylinder (1), the first forced drive (2), the driving nitrogen cylinder (3), the working limit insert (4 ), the limit block (5), the second forced drive (6), the second return nitrogen cylinder (7) and the stroke track (8), the first return nitrogen cylinder (1) is set on the first forced drive (2) And the end of its working part is connected on the horizontal travel block (22) of the first forced drive (2), the right end of the horizontal travel block (22) is fixedly connected with the left side of the limit block (5), and the limit The block (5) is set on the stroke track (8) and can slide along the track, the second forced drive (6) is set on the right side of the stroke track (8), and the second return nitrogen cylinder (7) is set on the second forced drive (6) to work together with the right side of the limit block (5); the first forced drive (2), stroke track (8) and second forced drive (6) are installed in sequence on the lower die edge ring of the mold ( 102), the driving nitrogen cylinder (3) is installed on the upper mold of the mold to cooperate with the vertical driving block (23) of the first forced drive (2), and the stroke of the driving nitrogen cylinder (3) is greater than that of the upper mold pressing core ( 101) of the working stroke, the working limit insert (4) is installed on the upper mold pressing material core (101) to cooperate with the limit block (5). 2. The mold pressing core synchronous return device according to claim 1, characterized in that: the first forced drive (2) also includes a housing (21), the horizontal travel block (22) and the vertical drive block (23) pass through The guide hole on the shell (21) is installed in the shell (21), the right end of the horizontal travel block (22) protrudes out of the shell (21) and is connected with the left side of the limit block (5), and the vertical drive block (23) The upper end extends out of the upper end surface of the casing (21) to cooperate with the driving nitrogen cylinder (3). The left end surface of the horizontal travel block (22) and the lower end surface of the vertical driving block (23) are both processed into inclined planes and matched It works to form a wedge mechanism; the first return nitrogen cylinder (1) is arranged on the casing (21). 3. The mold pressing core synchronous return device according to claim 2, characterized in that: the left end face of the horizontal stroke block (22) and the lower end face of the vertical drive block (23) are both processed into a slope inclined at an angle of 45° . 4. The mold pressing core synchronous return device according to claim 2 or 3, characterized in that: the lower end of the casing (21) is also processed with a groove structure, and the limit key (9) is tightly inserted in the bottom of the casing (21). In the space enclosed by the groove structure and the groove of the lower die binder ring (102), lateral forces are eliminated. 5. The mold pressing core synchronous return device according to claim 1, 2 or 3, characterized in that: when the working limit insert (4) and the limit block (5) work together, the limit block (5) and the working The bottom surface of the limit insert (4) is in contact, and there is an angle of 5° between the limit block (5) and the corresponding pair of contact surfaces on the working limit insert (4). 6. The mold pressing core synchronous return device according to claim 1, 2 or 3, characterized in that a forced return hook (41) is also provided on the limit insert (4). 7. The synchronous return device for mold pressing cores according to claim 5, characterized in that: a forced return hook (41) is also provided on the limit insert (4). 8. The mold pressing core synchronous return device according to claim 1, 2, 3 or 7, characterized in that: the second return nitrogen cylinder (7) is set on the second forced drive (6) and the second return nitrogen The end of the working part of the cylinder (7) always exceeds the left end face of the second forced drive (6) to cooperate with the right side of the limit block (5). 9. A mold, characterized in that it comprises the mold pressing core synchronous return device according to any one of claims 1 to 8. 10. The mold according to claim 9, characterized in that there are 4 or more synchronous return devices for the pressing core of the mold.