KR20060080755A - Metallic patterns of a simultaneous forming press with clinching of multi-panel - Google Patents

Abstract

The present invention reduces the number of molds required, shortens the processing time, strengthens the bonding force between the panels by simultaneously processing a plurality of panels composed of the main panel and the auxiliary panel, and processing the product panel through pressure molding. It provides a forming press mold for clinching co-molding of a plurality of panels including a clinching molding unit to ensure the.

Press Mold, Simultaneous Molding, Clinching Molding

Description

FORMALLIC PATTERNS OF A SIMULTANEOUS FORMING PRESS WITH CLINCHING OF MULTI-PANEL}

1 is a cross-sectional configuration diagram of a forming press die for clinching co-molding of a plurality of panels according to the present invention.

FIG. 2 is an enlarged cross-sectional view of part A of FIG. 1.

3 to 5 is a step-by-step operational state diagram of the forming press mold for clinching co-molding of a plurality of panels according to the present invention.

6 is a side view of a typical press equipment.

FIG. 7 is a cross-sectional configuration diagram of a forming press mold for panel forming according to the line A-A of FIG. 6.

8 to 10 is a step-by-step operating state diagram of the forming press for forming a panel according to the prior art.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forming press mold for simultaneous clinching of multiple panels. More particularly, the present invention relates to a mold required by pressing and molding a plurality of panels comprising a main panel and an auxiliary panel for reinforcing its rigidity. The present invention relates to a forming press mold for simultaneous clinching of a plurality of panels which reduces the number, shortens the processing time, strengthens the bonding force between panels, and improves the degree of bonding.

As is well known, the press working is a processing method in which a shape of a panel is formed by applying a force to a material of a plate and plastically deforming it. Such press working is generally carried out by putting a blank in the form of a plate into a press equipment and placing the blank on a lower mold of a metal pattern, and then deforming the material with respect to the lower mold by lowering the upper mold.

For example, an average of 1,000 parts or more of body panels are developed from an automobile maker to the development and production of a first automobile model, and in order to produce a panel of one part, forming is carried out by pressing a certain form through various kinds of press equipment. After the molding process, the product panel is processed through an average of four processes such as forming, cutting, hole processing, bending, etc. in the press process such as trimming, piercing, flanging, and hemming. It is produced, the forming molding process is a process of plasticizing the material according to the product data is the main process for determining the quality of the product panel more than 90%.

As described above, in the press equipment for forming molding, as shown in FIG. 6, a lower mold 101 having a lower surface shape of a product panel is mounted on a lower bolster 103, and an upper portion of the lower mold 101 is provided. An upper mold 111 having an upper surface shape of a product panel is mounted on a slide 109 that is an upper press body, and a panel (not shown) is sandwiched between the lower mold 101 and press-molded to press it. The panel is molded.

In the mold of the general forming press applied to such a forming process, as shown in FIG. 7, the lower mold 101 having the bottom surface shape of the product panel is mounted on the lower bolster 103, and the lower mold 101 is provided. On the outside of the ballast 103 is mounted a blank holder 107 through the cushion pin 105.

In addition, the upper mold 111 having the top surface shape of the product panel at the upper portion of the lower mold 101 is mounted on the slider 109 at the upper portion of the blank panel 101 which is inserted between the lower mold 101 and the blank. The upper part is pressed in the state spanning the holder 107 to form the product panel.

That is, as shown in FIG. 7, first, when the upper mold 111 and the blank holder 107 are raised, and the material panel 113 is inserted between the upper mold 111 and the lower mold 101, FIG. 8. As in, the upper mold 111 is lowered operation by the die face surface 115 of the upper mold 111 and the die face surface 117 of the blank holder 107, the material panel 113 is held at its outer end. do.

In this state, as shown in FIG. 9, the upper die 111 and the blank holder 107 work together in a lowering operation to hold the material held on the die face surfaces 115 and 117 of the upper die 111 and the blank holder 107. As the panel 113 is gradually introduced into the molding part, the panel 113 is molded along the shape of the product, and the upper mold 111 is press-molded into the product panel at the moment when the upper mold 111 is completely matched with the lower mold 101.

As described above, the material panel 113 in which the molding is completed is lifted by the blank holder 107 in a state where the upper mold 111 is raised, as shown in FIG. 10, and the press equipment is removed by the take-out hanger 121. It is taken out from.

However, according to the prior art as described above, in order to manufacture a structure in which one reinforcement panel is coupled to one main panel, four molds for manufacturing the main panel and 4 * N for manufacturing the reinforcement panel (where N is the number of reinforcement panels.

In addition, since each panel is manufactured after joining them, the time required for manufacturing the product panel as the final structure takes a lot of time, such as' unit pressing time * number of panels + time required for joining '(wherein' Unit pressing time means the time taken to press a material panel to produce one product panel), as well as a lot of variation in joining each separately manufactured panel. In this case, such as welding Even when joining by a method, it is difficult to secure a perfect coupling degree, which causes a lack of strength. In particular, when the product panel is an automobile panel, there are problems such as abnormal vehicle noise during driving. .

Accordingly, the present invention has been invented to solve the above-mentioned problems, and an object of the present invention is necessary by processing a product panel through press molding while simultaneously cleaning a plurality of panels composed of a main panel and an auxiliary panel. In order to reduce the number of molds, shorten the processing time, to enhance the bonding strength between the panels and to secure the degree of bonding to provide a forming press mold for multi-line clinching simultaneous molding including a clinching forming unit.

According to the present invention for achieving the above object, the forming press mold for clinching co-molding of a plurality of panels is mounted on a lower bolster with a lower mold having a lower surface forming portion, and a cushioning pin on the bolster to the outside of the lower mold. In a forming press mold for panel forming, wherein a blank holder is mounted, and an upper mold having an upper surface forming portion at an upper portion of the lower mold is mounted on a slider at an upper portion to press-mold a material panel injected between the lower mold and the lower mold.

At least two sheets of material panels are processed between the upper mold and the lower mold, and processed between the upper mold and the lower mold, at the same time as the press molding operation of the injected material panels, one side is clinched and then It characterized in that it comprises a clinching molding unit for taking out the clinching molding portion through both sides of the clinching steel that is opened by the cam operation,

The clinching molding unit includes a clinching punch mounted integrally downward on one side on the bottom surface forming part of the upper mold; And a clinching steel unit configured to form a top end portion of the lower mold and an inside thereof so as to form a corresponding clinching groove with respect to the clinching punch, and including at least two clinching steels cam-driven in the width direction. Characterized in that.

The clinching steel unit may include a guide block formed in a width direction on a central side of the space part to form a space inside the one side forming part of the lower mold;

On the upper side of the guide block to form a complete clinching groove corresponding to each other on both sides are installed so as to be slidable in the width direction, respectively, each outer surface is formed with an inclined surface facing upwardly outward, respectively on the corresponding inner surface Left and right clinching steel to form a spring groove inwardly;

A return spring installed through each spring groove of the left and right clinching steel;

In the space portion, the cam block corresponding to each of the inclined surface of the left and right clinching steel is formed on both inner side, and the inner inner lower side of the cam block to form a block seating groove so that the guide block is inserted;

It is mounted to the lower surface of the space portion, characterized in that consisting of a drive cylinder connected to the central lower portion of the cam block through the tip of the operating rod.

Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional configuration diagram of a multi-panel clinching co-molding press mold according to the present invention. First, referring to the overall configuration of a multi-panel clinching co-molding press press mold according to the present invention, the bottom surface of the product panel A lower mold 1 having a top face forming part 2 of a shape is mounted to the lower bolster 3, and outside of the lower mold 1, blanks are formed on the bolster 3 via cushion pins 5. The holder 7 is mounted.

And the upper mold 11 having the lower surface forming part 12 of the upper surface shape of the product panel at the upper portion of the lower mold 1 is mounted to the slider 9 of the upper and is introduced between the lower mold 1 The raw material panel 10 (see FIG. 3) is pressed on the blank holder 7 to be molded into the product panel.

Here, the material panel 10 introduced between the upper mold 11 and the lower mold 1 is at least two or more material panels (in this embodiment is applied by the input of two material panels) is added to each other clinching processing This is done at the same time.

In addition, between the molding portions of the upper mold 11 and the lower mold 1, at the same time as the pressing molding operation of the material panel 10 to be injected, after clinching one side thereof, the take-out of the clinching molding unit is cam It constitutes a clinching molding unit (A) to be made through both side clinching steel (31, 33) to be opened by the operation.

As shown in FIG. 2, the clinching molding unit A is integrally mounted with a clinching punch 21 downward on one side on the bottom surface forming part 12 of the upper mold 11.

The upper surface forming part 2 of the lower mold 1 and the clinching steel unit are configured to form a corresponding clinching groove 35 with respect to the clinching punch 21.

First, the clinching punch 21 is integrally mounted to the punch block 23 configured at one side on the lower surface forming part 12 of the upper mold 11.

It is preferable that such a clinching punch 21 has a circular cross section without a dimension difference in diameter in a predetermined section of the lower portion thereof.

In addition, the clinching steel unit forms a space portion 37 inside the molding portion 2 on one side of the lower mold 1, and a guide block 39 in the width direction on the central side of the space portion 37. Is formed.

Left and right clinching steels 31 and 33 are provided on the upper side of the guide block 39 so as to face each other on both sides to form a clinching groove 35 corresponding to the clinching punch 21. The left and right clinching steels 31 and 33 form a complete clinching groove 35 by contacting surfaces corresponding to each other.

Here, the clinching groove 35 formed by the left and right clinching steels 31 and 33 is formed in a circular cross section, and at the bottom of the inner circumferential surface of the complete clinching groove 35, the clinching molding material It is preferable to form the recessed part 41 for forming the junction part of liver.

In addition, the left and right clinching steels 31 and 33 are installed on the guide block 39 so as to be slidable in the width direction, respectively, and the inclined surfaces C1 facing upward are formed on the outer surfaces thereof.

In addition, spring grooves 43 are formed on the inner side surfaces of the left and right clinching steels 31 and 33 that correspond to each other.

A return spring 45 is installed in each spring groove 43 of the left and right clinching steels 31 and 33, and both ends of the return spring 45 are the left and right clinching steels 31 and 33. It is preferably supported and installed in the inner end surface of each spring groove 43 of the), it is preferably made of a coil spring.

Here, it is preferable that the sliding plate 47 for reducing friction with the left and right clinching steels 31 and 33 is installed on the top surface of the guide block 39.

In the space 37 of the lower mold 1, a cam block 49 for forming cam surfaces C2 corresponding to the inclined surfaces C1 of the left and right clinching steels 31 and 33 on both inner surfaces thereof. ) Is provided, the center inner lower surface between the two cam surface (C2) of the cam block 49 is formed by the block seating groove (C3) so that the guide block 39 is inserted from the top.

The cam block 49 and the inner surface of the space portion 37 are in sliding contact with each other, and the space portion of the lower mold 1 in contact with the outer surface of the cam block 49 for mutual friction reduction. 37) It is preferable that a certain section sliding plate 51 is installed on the inner surface.

In addition, a driving cylinder 53 for driving the cam block 49 up and down is mounted upwardly on a lower surface of the space 37 of the lower mold 1, and an operating rod 55 of the driving cylinder 53 is mounted upwardly. The tip is connected to the center lower part of the cam block 49.

Here, it is preferable that the said drive cylinder 53 consists of a double acting hydraulic cylinder which makes the operating pressure into hydraulic pressure, or the pneumatic cylinder which makes the operating pressure into pneumatic pressure.

Therefore, when the operation of the forming press mold for clinching co-molding of a plurality of panels having the configuration as described above, looking at each step through FIGS.

As shown in FIG. 3, first, in the state in which the upper die 11 and the blank holder 7 are raised, the driving cylinder 53 is driven forward and raised to raise the cam block 49 to clinch the left and right sides. In the state where the steels 31 and 33 correspond to each other, the two material panels 10 composed of the main panel and the reinforcement panel are introduced between the upper mold 11 and the lower mold 1.

Subsequently, the upper die 11 is lowered by the upper slide 9 so that the two material panels (eg, through the die face 19 of the upper die 11 and the die face 15 of the blank holder 7) 10) Hold the outer end.

In this state, when the upper mold 11 continues to move downward by the upper slide 9, the blank holder 7 starts to lower the operation, as shown in Figure 4, and the upper mold 11 and As the two material panels 10 held on the die face surfaces 19 and 15 of the blank holder 7 flow into the upper mold 11 and the respective molding portions 12 and 2 of the lower mold 1 little by little, It is molded along the shape of the product, and at the moment when the upper mold 11 is completely integrated with the lower mold 1, it is molded into a product panel.

At this time, the clinching punch 21 mounted on one side of the upper mold 11 presses one side of the two material panels 10 before the molding is completed, and thus the left and right clinching steel 31 on the lower mold 1 It is punched and pushed into the clinching groove 35 formed by 33).

Accordingly, in the clinching groove 35, as shown in FIG. 4, a portion P is formed to be folded so that the two material panels 10 are not separated from the main portion, and thus the material panels 10 are bonded to each other. This is done.

As such, when the upper panel 9 is lifted up after the product panel 10 is press-molded while the clinching molding is performed, the upper mold 11 and the blank holder 7 are as shown in FIG. 5. Is simultaneously raised, and at the same time, the driving cylinder 53 also moves downward to lower the cam block 49 by a predetermined stroke.

At this time, as the cam block 49 is lowered, the left and right clinching steels 31 and 33 are mutually opened by the elastic force of the return spring 45 formed therebetween, so that the clinching groove ( 35) is enlarged in the width direction.

That is, the joining portion P formed by the clinching punch 21 and the clinching groove 35, in particular, the recessed portion 41 of the clinching groove 35, can escape from the clinching groove 35 without interference. The clinching groove 35 is to be widened.

Therefore, after the upper slide 9 is completed ascending, the hanger 40 is introduced between the upper mold 11 and the lower mold 1 to take out the product panel. It can be excluded.

In addition, since the main panel and the reinforcing panel are press-molded in a predetermined shape simultaneously with the clinching process, the main panel and the reinforcing panel can be strengthened and the bonding degree can be secured.

As described above, according to the present invention, according to the present invention, according to the present invention, according to the present invention, the forming press mold for clinching simultaneous molding of a plurality of panels includes a clinching process for forming a plurality of panels composed of a main panel, an auxiliary panel, and the like in the same press mold. At the same time, by simultaneously forming pressure in a predetermined shape, the number of required molds can be reduced, thereby reducing the machining process and reducing the machining time.

In addition, by pressing a plurality of panels at the same time, the bonding degree is secured, and at the same time there is an effect that can provide a bonding force due to the clinching process and pressing molding between the panels.

In addition, the clinching groove can be enlarged by the left and right clinching steel cam-operated in the width direction, and the joint formed by the clinching punch and the clinching groove, in particular the recessed part of the clinching groove, is a clinching groove. It is possible to escape without interference from the product to improve the takeout of the product panel.

Claims (11)

A lower mold having a lower face mold is mounted on the lower bolster, and a blank holder is mounted to the bolster through the cushion pin to the outside of the lower mold, and an upper mold having an upper mold on the upper mold is mounted on the upper slider. In the forming press mold for panel molding which press-forms the raw material panel which is injected between the lower mold, Between the upper mold and the lower mold is processed by putting at least two or more material panels, Between the upper and lower mold parts, at the same time as the press molding operation of the input material panels, after clinching one side thereof, taking out of the clinching molded part is performed through both side clinching steels which are opened by cam operation. A forming press die for clinching co-molding of a plurality of panels, characterized in that it comprises a clinching molding unit to be formed. The method of claim 1, wherein the clinching molding unit A clinching punch mounted integrally downward on one side on the lower surface forming portion of the upper die; And a clinching steel unit configured to form a top end portion of the lower mold and an inside thereof so as to form a corresponding clinching groove with respect to the clinching punch, and including at least two clinching steels cam-driven in the width direction. Forming press die for clinching co-molding of a plurality of panels. The method of claim 2, wherein the clinching punch Clinching and simultaneous forming of a plurality of panels is formed through a punch block integrally mounted on one side on the upper surface forming portion of the upper die. The method according to claim 2 or 3, wherein the clinching punch A forming press die for clinching co-molding of a plurality of panels, wherein a section of a certain section is formed of a circular section having no diameter difference. The method of claim 2, wherein the clinching steel unit A guide block which forms a space part inside the one side molding part of the lower mold and is installed in a width direction on a central one side of the space part; On the upper side of the guide block to form a complete clinching grooves corresponding to each other on both sides are installed so as to be slidable in the width direction, respectively, each outer side is formed with an inclined surface facing upwards and outwards, respectively on the inner side corresponding to each other Left and right clinching steel to form a spring groove; A return spring installed through each spring groove of the left and right clinching steel; In the space portion, the cam block corresponding to each of the inclined surface of the left and right clinching steel is formed on both inner side, and the inner inner lower side of the cam block to form a block seating groove so that the guide block is inserted; A driving cylinder mounted upwardly on the lower surface of the space part and connected to a central lower portion of the cam block through a tip of the working rod; Forming press die for clinching co-molding of a plurality of panels, characterized in that consisting of. The method of claim 5, wherein the upper surface of the guide block The forming press die for clinching simultaneous forming of a plurality of panels, characterized in that the sliding plate for reducing friction with the left and right clinching steel is provided. The clinching groove formed by the left and right clinching steel is The cross section is formed in a circular shape, the bottom of the inner peripheral surface of the groove, when forming clinching, forming a concave for forming a joint between the material further characterized in that the forming press mold for clinching simultaneous molding of a plurality of panels. The method of claim 5, wherein the return spring A forming press die for clinching simultaneous forming of a plurality of panels, wherein both ends are formed of coil springs supported and installed on inner end surfaces of respective spring grooves of the left and right clinching steel. The forming press die for clinching simultaneous molding of a plurality of panels according to claim 5, wherein a predetermined section sliding plate is provided on a space inner side of the lower portion in contact with an outer side of the cam block. The method of claim 5, wherein the drive cylinder A multi-panel clinching co-molding press mold comprising a double-acting hydraulic cylinder whose hydraulic pressure is hydraulic. The method of claim 5, wherein the drive cylinder A forming press die for clinching simultaneous molding of a plurality of panels, characterized by comprising a pneumatic cylinder whose working pressure is pneumatic.

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