CN111774482A

CN111774482A - Trimming die for automobile front floor and using method

Info

Publication number: CN111774482A
Application number: CN202010531354.4A
Authority: CN
Inventors: 吴昊; 朱春明; 谢华金; 朱明智; 秦宾; 李小昌; 杨关勇
Original assignee: Wuhu Ruihu Haobo Mould Co ltd
Current assignee: Wuhu Ruihu Haobo Mould Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2020-10-16

Abstract

The invention relates to a trimming die for a front floor of an automobile and a using method thereof, the die comprises an upper die holder provided with an upper die guide sleeve, a lower die holder provided with a lower die guide post and a trimming die structure arranged between the lower die holder and the upper die holder, the trimming die comprises a trimming knife arranged on the outer side edge part of the lower die holder, an upper die trimming male die is arranged at the position of the upper die holder corresponding to the trimming knife, a material supporting core is arranged in the lower die holder and connected with a lower die linkage structure, and the trimming knife is connected with a discharging structure and a flanging knife group arranged between the lower die holder and the upper die holder. The special upward trimming mechanism of the die can well solve the technical problems, saves working procedures, simultaneously solves the problem of trimming by upward trimming, avoids double material pressing cores, reduces cost, simplifies structure, enables waste materials to slide smoothly, facilitates field processing and debugging, improves working efficiency and promotes competitiveness of die enterprises.

Description

Trimming die for automobile front floor and using method

Technical Field

The invention relates to the field of dies, in particular to a trimming die for an automobile front floor and a using method thereof.

Background

With the rapid development of the mold industry, under the large background that the competition is more and more intense, the efficiency improvement and cost reduction are carried out before all manufacturers, better and faster development is desired, better service and higher quality are provided, and the manufacturing cost can be reduced as much as possible by anyone, so that the mold industry with the great waves and sand washing can finally survive, and therefore, enterprises need to continuously innovate new technologies which better use and save the cost.

At present, in a traditional trimming structure of an automobile die, a trimming knife is fixed on an upper die, a trimming male die is fixed on a lower die, a material pressing core needs to be designed on the upper die, and a pressure source, a side pin and a bolt standard part which are matched with the material pressing core are needed. The upper die moves downwards along with the press sliding block, the pressing core contacts with the plate and compresses the plate together with the lower die trimming convex die, and when the upper die moves 8 mm before the lower dead point, the trimming knife starts trimming downwards until the lower dead point is reached, and trimming is finished.

The design is divided into three sequences like the automobile front floor: OP10 drawing, OP20 trimming, punching, OP30 flanging, shaping and trimming. Considering that the plate has large shape fluctuation, OP20 has one circle of trimming edge and difficult waste discharge, and several trimming edges are put on OP30, so that the problem of difficult waste discharge of OP20 is solved, but a new problem is brought about: according to the traditional downward trimming structure, the upper die is required to be provided with the material pressing core, the lower die is provided with the material supporting core due to the upward flanging and shaping of OP30, if the upper die is required to have a complex double-movable structure of the material supporting core and the material pressing core, the upper die is provided with the material pressing core and the trimming knife, and the lower die is provided with the lower die trimming convex die, the arrangement is difficult to realize based on the die process content and space limitation, the design difficulty and complexity of the die are increased invisibly, the workload of field debugging is increased, and the die manufacturing cost is increased.

Disclosure of Invention

The purpose of the invention is: the trimming die for the automobile front floor and the use method thereof are provided, and the trimming die has the advantages of simplicity and convenience in operation and stable and reliable structural equipment; the problem is solved, the operation of frock of being convenient for improves parts machining's quality and efficiency.

The technical scheme adopted by the invention for solving the technical problems is as follows: the trimming die comprises an upper die base provided with an upper die guide sleeve, a lower die base provided with a lower die guide post and a trimming die structure arranged between the lower die base and the upper die base, wherein the trimming die comprises a trimming knife arranged at the outer side edge part of the lower die base, an upper trimming male die is arranged at the position of the upper die base corresponding to the trimming knife, a material supporting core is arranged in the lower die base and is connected with a lower die linkage structure, and the trimming knife is connected with a discharging structure and a flanging knife group arranged between the lower die base and the upper die base.

The lower die linkage structure comprises a connecting material supporting core 2 arranged at the center of the lower part of the lower die base, a nitrogen cylinder for connecting the lower material supporting core and a heading dead block.

And two groups of die nitrogen cylinders and upsetting dead blocks are arranged in the lower die holder.

The discharging structure comprises a side pin, a waste sliding plate and an ejection pin.

The flanging knife group comprises a lower die flanging knife arranged on the lower die base and an upper die flanging knife arranged on the upper die base.

And an upper die shaping knife is arranged in the middle of the upper die base.

The use method of the trimming die for the front floor of the automobile comprises the following steps of; and (3) mold opening stage:

1.1), opening the press upwards, lifting an upper die trimming male die, an upper die flanging knife and an upper die shaping knife of an upper die seat and an upper die accessory, and simultaneously jacking a material supporting core by a lower die nitrogen cylinder;

1.2) the material supporting core moves upwards for 1 material supporting core stroke under the elastic action of a nitrogen cylinder of the lower die, and the molded surfaces of the trimming knife and the flanging knife of the lower die are lower than the molded surface of the material supporting core;

1.3, automatic feeding, wherein a plate is accurately placed in a mold cavity in advance and is positioned;

a mold closing stage:

2.1, the upper die base and the upper die trimming male die, the upper die flanging knife and the upper die shaping knife thereof move downwards along with the press, and the trimming male die contacts the plate and compresses the plate together with the lower die material supporting core;

2.2, along with the continuous downward movement of the upper die, the downward pressure of the upper die is gradually increased by the press, when the downward pressure is greater than the force provided by the nitrogen cylinder of the lower die, the material supporting core moves downward, the flanging and shaping are started, when the upper die continues to move downward and runs 8 mm before a lower dead point, the trimming knife is contacted with the trimming male die of the upper die, and the trimming knife starts to trim upward;

and 2.3, moving the material supporting core to a bottom dead center, namely upsetting the material supporting core and the upsetting dead block to the bottom, and finishing trimming and flanging and shaping actions. The cut waste is jacked up by the ejection pin and smoothly slides down by the waste sliding plate.

The invention has the beneficial effects that:

(1) through the special trimming mechanism for the automobile front floor die, the lower die is turned upwards, and a working procedure can be saved under the condition that the upper die cannot be designed with a trimming and pressing core;

(2) the upper trimming difficulty is solved by the special trimming mechanism for the automobile front floor mold through the upper trimming;

(3) through the special trimming mechanism for the automobile front floor mold, the use of double material pressing cores is avoided, and the mold manufacturing cost is saved;

(4) through the special trimming mechanism for the automobile front floor mold, the traditional trimming structure is changed, the structure is effectively simplified, the on-site processing and debugging are convenient, and the working efficiency is improved;

(5) through the special trimming mechanism for the automobile front floor mold, waste materials slide off the cutter back, and the problem of sliding of the waste materials is well solved;

the invention will be explained in more detail below with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic structural view of an upper die holder according to the present invention.

FIG. 2 is a schematic structural view of the lower die holder of the present invention.

Fig. 3 is a sectional view taken along line B-B in fig. 1.

Fig. 4 is a sectional view taken along line a-a of fig. 2.

FIG. 5 is a schematic view of the construction of the deburring cutter of the present invention.

Fig. 6 is a schematic structural view of the eject pin of the present invention.

FIG. 7 is a schematic view of the construction of the scrap slide of the present invention.

FIG. 8 is a schematic view of the combination of the trimming blade, the eject pin and the waste slide plate of the present invention.

FIG. 9 is a schematic structural view of an upper die trimming male die in the invention.

FIG. 10 is a schematic view of the combination of the trimming blade and the trimming male die of the upper die of the present invention.

In the figure: 1. the device comprises a lower die base, 2 material supporting cores, 3 lower die nitrogen cylinders, 4 upsetting dead blocks, 5 side pins, 6 trimming knives, 7 waste sliding plates, 8 ejection pins, 9 lower die guide columns, 10 upper die guide sleeves, 11 upper die trimming male dies, 12 upper die base, 13 upper die flanging knives, 14 upper die shaping knives and 15 lower die flanging knives.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Embodiment 1, as shown in fig. 1 to 10, a trimming mold for a front floor of an automobile includes an upper mold base 12 provided with an upper mold guide sleeve 10, a lower mold base 1 provided with a lower mold guide post 9, and a trimming mold structure disposed between the lower mold base 1 and the upper mold base 12, wherein a side pin 5 is disposed in the lower mold base 1, the trimming mold includes a trimming knife 6 disposed at an outer side edge of the lower mold base 1, an upper trimming male mold 11 is disposed at a position of the upper mold base 12 corresponding to the trimming knife 6, a material supporting core 2 is disposed in the lower mold base 1, the material supporting core 2 is connected with a lower mold linkage structure, the trimming knife 6 is connected with a discharging structure, and a flanging knife group is disposed between the lower mold base 1 and the upper mold base 12.

The lower die linkage structure comprises a connecting material supporting core 2 arranged at the center of the lower part of the lower die base 1, a nitrogen cylinder 3 for connecting the lower material supporting core 2 and an upsetting dead block 4.

And the die nitrogen cylinder 3 and the upsetting dead block 4 are provided with two groups in the lower die holder 1.

The discharging structure comprises a side pin 5, a waste sliding plate 7 and a spring ejection pin 8.

The flanging knife group comprises a lower die flanging knife 15 arranged on the lower die base 1 and an upper die flanging knife 13 arranged on the upper die base 12.

An upper die shaping knife 14 is arranged in the middle of the upper die base 12. The traditional downward trimming structure is changed through the mechanism: the mechanism is characterized in that the trimming knife is arranged on the lower die, and the trimming convex die is fixed on the upper die. When the upper die is positioned at the upper dead point, the lower die material supporting core rises to the feeding height position under the action of the nitrogen cylinder, and the plate is accurately placed on the molded surface and well positioned; the upper die descends along with the press sliding block, and the trimming male die contacts the plate and compresses the plate together with the lower die material supporting core; the downward pressure of the upper die is gradually increased by the press along with the downward movement of the upper die, when the downward pressure is larger than the force provided by the nitrogen cylinder of the lower die, the material supporting core moves downward, the flanging and shaping are started, when the upper die continues to move downward and moves 8 mm before the lower dead point, the trimming knife starts to trim upward, when the upper die reaches the lower dead point, the trimming and flanging and shaping actions are finished, and the cut waste material is jacked up by the ejection pin and smoothly slides down by the waste material sliding plate.

Example 2, on the basis of combining example 1; the use method of the trimming die for the front floor of the automobile comprises the following steps of; and (3) mold opening stage:

1.1), the press is opened upwards, the upper die base 12 and the upper die trimming male die 11, the upper die flanging knife 13 and the upper die shaping knife 14 of the upper die accessory are lifted, and the lower die nitrogen cylinder 3 jacks up the material supporting core 2;

1.2) the material supporting core 2 moves upwards for 1 material supporting core stroke under the elastic action of the lower die nitrogen cylinder 3, and the molded surfaces of the trimming cutter 6 and the lower die flanging cutter 15 are lower than the molded surface of the material supporting core;

a mold closing stage:

2.1, moving the upper die base 12, the upper die trimming convex die 11, the upper die flanging knife 13 and the upper die shaping knife 14 downwards along with the press, enabling the trimming convex die to contact with the plate and tightly press the plate together with the lower die material supporting core 2;

2.2, along with the continuous downward movement of the upper die, the downward pressure of the upper die is gradually increased by the press, when the downward pressure is greater than the force provided by the nitrogen cylinder 3 of the lower die, the material supporting core 2 moves downward, the flanging and shaping are started, when the upper die continues to move downward and runs 8 mm before the lower dead point, the trimming knife 6 is contacted with the trimming male die 11 of the upper die, and the trimming knife starts to trim upward;

2.3, the material supporting core 2 moves to a bottom dead center, namely the material supporting core 2 and the upsetting block 4 are upset to the bottom, trimming and flanging shaping actions are finished, and the cut waste is jacked up by the ejection pin 8 and smoothly slides down by the waste sliding plate 7.

The special upward trimming mechanism of the die can well solve the technical problems, saves working procedures, simultaneously solves the problem of trimming by upward trimming, avoids double material pressing cores, reduces cost, simplifies structure, enables waste materials to slide smoothly, facilitates field processing and debugging, improves working efficiency and promotes competitiveness of die enterprises.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. The utility model provides a trimming die utensil of floor before car, this mould is including upper die base (12) that are equipped with last mould guide pin bushing (10), lower bolster (1) that are equipped with lower mould guide pillar (9) and the trimming die utensil structure of setting between lower bolster (1) and upper die base (12), its characterized in that: the trimming die comprises a trimming knife (6) arranged on the outer side edge of a lower die holder (1), an upper die trimming male die (11) is arranged at the position, corresponding to the trimming knife (6), of an upper die holder (12), a material supporting core (2) is arranged in the lower die holder (1), the material supporting core (2) is connected with a lower die linkage structure, the trimming knife (6) is connected with a material discharging structure, and a flanging knife group is arranged between the lower die holder (1) and the upper die holder (12).

2. The trimming die for the front floor of the automobile as claimed in claim 1, wherein: the lower die linkage structure comprises a connecting material supporting core (2) arranged at the center of the lower part of the lower die base (1), a die nitrogen cylinder (3) for connecting the lower material supporting core (2) and a heading dead block (4).

3. The trimming die for the front floor of the automobile as claimed in claim 2, wherein: and the die nitrogen cylinder (3) and the upsetting dead block (4) are provided with two groups in the lower die holder (1).

4. The trimming die for the front floor of the automobile as claimed in claim 1, wherein: the discharging structure comprises a side pin (5), a waste sliding plate (7) and an ejection pin (8).

5. The trimming die for the front floor of the automobile as claimed in claim 1, wherein: the flanging knife group comprises a lower die flanging knife (15) arranged on the lower die base (1) and an upper die flanging knife (13) arranged on the upper die base (12).

6. The trimming die for the front floor of the automobile as claimed in claim 1, wherein: an upper die shaping knife (14) is arranged in the middle of the upper die base (12).

7. The use method of the trimming die for the front floor of the automobile is characterized by comprising the following steps of: the use method is as follows; and (3) mold opening stage:

1.1), the press is opened upwards, an upper die seat (12) and an upper die trimming convex die (11), an upper die flanging knife (13) and an upper die shaping knife (14) of an upper die accessory are lifted, and a lower die nitrogen cylinder (3) jacks up a material supporting core (2);

1.2) the material supporting core (2) moves upwards for 1 material supporting core stroke under the elastic action of the lower die nitrogen cylinder (3), and the molded surfaces of the trimming knife (6) and the lower die flanging knife (15) are lower than the molded surface of the material supporting core at the moment;

a mold closing stage:

2.1, an upper die base (12), an upper die trimming convex die (11) of the upper die, an upper die flanging knife (13) and an upper die shaping knife (14) of the upper die move downwards along with a press, and the trimming convex die contacts with a plate and compresses the plate together with a lower die supporting core (2);

2.2, along with the continuous downward movement of the upper die, the downward pressure of the upper die is gradually increased by the press, when the downward pressure is greater than the force provided by the nitrogen cylinder (3) of the lower die, the material supporting core (2) moves downward, the flanging and shaping are started, when the upper die continues to move downward and runs 8 mm before the lower dead point, the trimming knife (6) is contacted with the trimming male die (11) of the upper die, and the trimming knife starts to trim upwards;

and 2.3, moving the material supporting core (2) to a bottom dead center, namely upsetting the material supporting core (2) and the upsetting block (4) to the bottom, finishing trimming and flanging and shaping actions, and jacking the cut waste materials by an elastic jacking pin (8) and smoothly sliding the cut waste materials by a waste material sliding plate (7).