KR100444033B1 - Locking clamp system for press - Google Patents

Abstract

In order to provide a locking clamp device for presses which is excellent in durability by eliminating inoperability due to mutual interference by mounting a clamper interlocking with each other on the slide and the upper die that are fastened to each other,

The upper die is mounted on the lower bolster, and the upper die is mounted on the upper slide of the lower die, and the upper die is mounted on the slide of the press equipment for forming a product panel by pressing the panel put between the lower die and the upper die from the top. In the locking clamp device for presses fixedly mounted,

An operation cylinder mounted to one side of the slide downward through a mounting block having a space therein; In the space portion of the mounting block, is fastened to the tip of the operating rod of the working cylinder, the semicircular recess is formed symmetrically toward the vertical center line to form a fastening portion, and a guide groove is formed at one side of each recess of the fastening portion. An upper clamper having a stopper surface of a predetermined angle formed on one side of the guide groove; A space portion is formed on an upper side of the upper mold corresponding to the mounting block to receive an elastic force inwardly by the elastic member symmetrically in the space portion, and semi-circular convex portions respectively corresponding to the left and right recesses of the fastening portion. And a guide corresponding to the guide groove of the upper clamper is mounted at an upper end thereof, and the left and right clamper cams are formed on one side of the guide to correspond to the stopper surface of the upper clamper. A locking clamp device for a press is provided.

Description

Locking Clamp Device for Presses {LOCKING CLAMP SYSTEM FOR PRESS}

The present invention relates to a locking clamp device for a press, and more particularly to a locking clamp device for a press for fixing the upper die on the press body of the press equipment.

Generally, 2 to 30,000 parts are manufactured through several assembly processes until an automobile manufacturer produces a car.

In particular, the car body is the first step in the automobile manufacturing process. After producing product panels through various kinds of press devices, the car body is moved to a car body factory, where each part of the product panels is assembled to form a white body (BIW) body. .

Thus, in order to mold the material panel into the product panel, after forming the molding process, which is press-molded to a certain form through various kinds of press equipments, trimming, piercing, flanging, and hemming ( HEMMING) press, such as cutting, hole processing, bending process.

In this press equipment, as shown in Fig. 1, a lower mold 1 having a lower surface shape of a product panel is mounted on a lower bolster 3, and an upper surface shape of a product panel is formed on an upper portion of the lower mold 1. The upper mold 5 having the upper body 5 is mounted on the slide 7 which is an upper press body, and presses a panel (not shown) between the lower mold 1 and the upper mold body to form a product panel.

At this time, the upper mold 5 is fixedly mounted to the slide 7 by a locking clamp device. As shown in FIG. 9, a conventional locking clamp device is provided at one side of the slide 7 to have a space therein. The actuating cylinder 105 is mounted such that the actuating rod 103 is located in the space 102 through the mounting bracket 101 having the 102.

And the front end of the operating rod 103 is formed with an inclined surface 107 on one side, the slot 109 in the vertical direction on one side is located in the space 102 of the mounting bracket 101, An arc-shaped curved guide 115 is mounted on one side of the mounting bracket 101 corresponding to the tip of the operating rod 103.

In addition, the cam block 113 is mounted in the space portion 102 of the mounting bracket 101 so as to be hinged to the slot 109 of the operation rod 103 through the slot pin 111. One side of the 113 is mounted with an operating cam 117 is guided by the curved guide 115, the operating cam 117 is the curved guide (11) by the tip inclined surface 107 of the operating rod 103 The cam block 113 is rotated along 115.

In addition, a clamper 121 having a clamping protrusion 119 formed at a free end is mounted on a lower surface of the cam block 113.

Therefore, in order to fix and mount the upper die 5 on the slide 7, the slide cylinder (dotted line) in the state where the working cylinder 105 on the slide 7 is advanced and the clamper 121 is rotated outward (dotted line). 7) and the U-shaped groove 123 formed at the edge of the upper die (5), after the operation cylinder 105 is retracted, the cam block 113 is the slot 109 of the operating rod 103 The clamper 121 is rotated while being pulled by the slot pins 111 mounted on the slide pins 111 so as to be inserted into the U-shaped grooves 123 of the slide 7 and the upper die 5.

Accordingly, the slide 7 and the upper die 5 are fixedly mounted to each other by the clamping protrusion 119 of the clamper 121.

However, according to the conventional locking clamp device for press as described above, during operation, the clamper interferes with the U-shaped groove of the upper mold and frequently causes an inoperable state. When the clamper is used for a long time, the curved guide or the inclined surface of the operating rod is used. It has a problem that it is difficult to preserve durability, such as the rotation angle of the clamper changes due to wear.

Therefore, the present invention was created in order to solve the problems as mentioned above, the object of the present invention is equipped with a clamper interlocking with each other on the slide and the upper mold to be mutually interlocked to eliminate the inoperability by mutual interference, durability An excellent locking clamp device for presses is provided.

1 is an overall configuration diagram of a general press equipment.

Figure 2 is a perspective view of the locking clamp device for a press of the present invention applied to part A of Figure 1

3 is a cross-sectional view of the locking clamp device for a press of the present invention taken along the line B-B of FIG.

4 is an enlarged view of a portion C of FIG. 2.

5 is a first operating state diagram of the locking clamp device for a press according to the present invention.

6 is a second operation state diagram of the locking clamp device for a press according to the present invention.

7 is a third operation state diagram of the locking clamp device for a press according to the present invention.

8 is a load distribution diagram of the locking clamp device for a press according to the present invention.

9 is a configuration diagram of a locking clamp device for a press according to the prior art applied to the portion A of FIG.

In order to achieve the above object, the locking clamp device for press according to the present invention has a lower mold mounted on a lower bolster, and an upper mold mounted on a slide of the upper mold at an upper portion of the lower mold inserted between the lower mold and the upper mold. In the pressing clamping device for press fixedly mounted on the slide of the press equipment for forming the product panel by pressing the panel from the top,

An operation cylinder mounted to one side of the slide downward through a mounting block having a space therein; In the space portion of the mounting block, is fastened to the tip of the operating rod of the working cylinder, the semicircular recess is formed symmetrically toward the vertical center line to form a fastening portion, and a guide groove is formed at one side of each recess of the fastening portion An upper clamper having a stopper surface of a predetermined angle formed on one side of the guide groove; A space portion is formed on an upper side of the upper mold corresponding to the mounting block to receive an elastic force inwardly by the elastic member symmetrically in the space portion, and semi-circular convex portions respectively corresponding to the left and right recesses of the fastening portion. And a guide corresponding to the guide groove of the upper clamper is mounted at the upper end, and the left and right clamper cams are formed to correspond to the stopper surface of the upper clamper to one side of the guide. ,

The maximum angle formed between the end of the fastening portion of the upper clamper and the center of the left and right clamper cam is determined within a range of 45 degrees or more and 90 degrees or less.

The stopper surface of the upper clamper and the corresponding stopper surface of the left and right clamper cams corresponding thereto may be determined within an inclination angle of 0 degrees or more and 45 degrees or less.

The elastic member is characterized in that consisting of a high tension coil spring,

The left and right clamper cam is characterized in that the lower end surface is configured to slide by forming a sliding guide in the lower portion of the upper portion of the upper die.

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

1 is an overall configuration diagram of a general press equipment, Figure 2 is a perspective view of the locking clamp device for a press of the present invention applied to the portion A of Figure 1, Figure 3 is a press for the present invention according to line BB of Figure 1 As a cross-sectional view of the locking clamp device, the configuration of a general press equipment to which the present invention is applied will be described first. As shown in FIG. 1, a lower mold 1 having a lower surface shape of a product panel is mounted on a lower bolster 3. In the upper part of the lower mold 1, an upper mold 5 having an upper surface shape of the product panel is mounted on a slide 7 which is an upper press body, and a panel (not shown) is disposed between the lower mold 1 and the lower mold 1. Pressing from the top to form a product panel.

At this time, the upper die 5 is fixed to the slide 7 by the locking clamp device according to the present invention, the locking clamp device for press according to the present invention, as shown in FIG. The working cylinder 17 is mounted to one side of the slide 7 downward through the mounting block 13 having the space 11 therein.

In the space 11 of the mounting block 13, the upper clamper 19 is fastened to the tip of the operating rod 15 of the operating cylinder 17, and the upper clamper 19 has its vertical center line 21. The semicircular recesses 23 and 25 are formed symmetrically toward the side to form the fastening part 27.

Square guide grooves 29 and 31 are formed at one upper side of the left and right recesses 23 and 25 of the fastening portion 27, and a predetermined angle is formed outside the guide grooves 29 and 31. Stopper surfaces 33 and 35 made of inclined surfaces are formed.

In addition, a space portion 41 is formed at an upper side of the upper die 5 corresponding to the mounting block 13, and in the space portion 41, high tension coil springs 43 and 45, each of which is an elastic member, are symmetrically. The left and right clamper cams 47 and 49 are mounted inward to receive an elastic force inwardly by the < RTI ID = 0.0 >

The left and right clamper cams 47 and 49 have semicircular concave portions 51 and 53 corresponding to the left and right recessed portions 23 and 25 of the fastening portion 27, respectively, and the upper clamper on the upper surface thereof. Guides 55 and 57 are mounted so as to slide corresponding to the left and right guide grooves 29 and 31 of 19, respectively.

In addition, the left and right clamper cams 47 and 49 have corresponding stopper surfaces 59 corresponding to the left and right stopper surfaces 33 and 35 of the upper clamper 19, respectively, outward of the guides 55 and 57. 61 is formed.

Here, the left and right stopper surfaces 33 and 35 of the upper clamper 19 and the corresponding stopper surfaces 59 and 61 of the left and right clamper cams 47 and 49 corresponding thereto are as shown in FIG. The inclination angle a is determined within a range of 0 degrees or more and 45 degrees or less, and when the upper clamper 19 is raised under the conditions of 45 degrees or less, interference with the guides 55 and 57 can be avoided.

In addition, the left and right clamper cams 47 and 49 have their lower end surfaces constituting sliding guides 63 and 65 respectively below the space portion 41 of the upper die 5, thereby sliding in the horizontal direction. .

In addition, during the up and down operation of the upper clamper 19, the maximum angle formed by the end of the fastening portion 27 of the upper clamper 19 and the center of the left and right clamper cams 47 and 49 ( ) Preferably constitutes the fastening portion 27 of the upper clamper 19 so as to be determined within a range of 45 degrees or more and 90 degrees or less, and as the maximum angle increases from 45 degrees, the upper clamper 19 and the left The fastening safety between the right clamper cams 47 and 49 is increased.

Therefore, the operation for fixedly mounting the upper die 5 to the slide 7 by the locking clamping device for presses having the configuration as described above, as in FIG. 5, the operation cylinder 17 on the slide 7. In the state in which the upper clamper 19 is pulled back, the space 11 of the slide 7 and the space 41 of the upper die 5 coincide with each other, and then the operating cylinder 17 is adjusted. When the forward operation, as shown in Figure 6, the upper clamper 19 is lowered so that the left and right ends p of the fastening portion 27 overcomes the elastic force of the coil spring (43, 45), the left, right clamper It is pushed through the convex portions 51 and 53 of the cams 47 and 49.

Then, the guides 55 and 57 of the left and right clamper cams 47 and 49 are guided to the guide grooves 29 and 31 along the stopper surfaces 33 and 35 formed on the upper clamper 19, respectively.

At this time, as shown in FIG. 4, while the upper clamper 19 is in operation, the distance between the left and right clamper cams 47 and 49 is moved ( ) And the travel distance of the upper clamper 19 ) Is defined as the angle formed between the end of the fastening portion 27 of the upper clamper 19 and the center of the left and right clamper cams 47 and 49. The radius of the convex portions 51 and 53 of the left and right clamper cams 47 and 49 is referred to as' '

from,

Appears.

As such, when the upper clamper 19 has completed the lowering, as shown in FIG. 7, the left and right clamper cams 47 and 49 have convex portions 51 and 53 with the left and right sides of the upper clamper 19. The seats 23 and 25 are seated and positioned respectively, and the guides 55 and 57 of the left and right clamper cams 47 and 49 are inserted into the guide grooves 29 and 31 of the upper clamper 19.

In addition, the corresponding stopper surfaces 59 and 61 of the left and right clamper cams 47 and 49 are lowered to the operation cylinder 17 while being in contact with the stopper surfaces 33 and 35 of the upper clamper 19. Keeping the pressure, the slide 7 and the upper die 5 are fixed to each other by the upper clamper 19 and the left and right clamper cams 47 and 49.

In this state, the upward load f1 operating between the upper clamper 19 and the left and right clamper cams 47 and 49 is in a state where the operating cylinder 17 is lowered as shown in FIG. 8. While holding, it acts below the horizontal center line 71 of the left and right clamper cams 47 and 49 from the fastening portion 27 of the upper clamper 19 and faces the downward downward load f2. ) Acts on the corresponding stopper surfaces 59 and 61 of the left and right clamper cams 47 and 49 from the stopper surfaces 33 and 35 of the upper clamper 19.

As described above, according to the locking clamp device for a press according to the present invention, in the press equipment, the upper clamper and the upper clamper and the left and right clamper cams which are elastically operated on the left and right sides, respectively, interlocking with the slide and the upper mold, which are mutually fastened. Equipped to eliminate the inoperation caused by interference between each other, there is an effect that can preserve the durability even for long time use.

Claims (5)

In the press equipment for forming a product panel by pressing the lower mold is mounted on the lower bolster, and the upper mold is mounted on the upper slide of the lower mold and presses the panel inserted between the lower mold and the upper mold from the upper side, the slide In the locking clamp device for presses for fixing the upper mold, An operation cylinder mounted to one side of the slide downward through a mounting block having a space therein; In the space portion of the mounting block, is fastened to the tip of the operating rod of the working cylinder, the semicircular recess is formed symmetrically toward the vertical center line to form a fastening portion, and a guide groove is formed at one side of each recess of the fastening portion. An upper clamper having a stopper surface of a predetermined angle formed on one side of the guide groove; A space portion is formed on an upper side of the upper mold corresponding to the mounting block to receive an elastic force inwardly by the elastic member symmetrically in the space portion, and semi-circular convex portions respectively corresponding to the left and right recesses of the fastening portion. And a guide corresponding to the guide groove of the upper clamper is mounted at an upper end thereof, and the left and right clamper cams are formed on one side of the guide to correspond to the stopper surface of the upper clamper. Locking clamp device for presses. The locking clamp device according to claim 1, wherein a maximum angle formed between the end of the fastening portion of the upper clamper and the center of the left and right clamper cams is determined within a range of 45 degrees or more and 90 degrees or less. The locking clamp device according to claim 1, wherein the stopper face of the upper clamper and the corresponding stopper face of the left and right clamper cams are determined within an inclination angle of 0 degrees or more and 45 degrees or less. . The method according to claim 1, wherein the elastic member A locking clamp device for presses comprising a coil spring of high tension. The method of claim 1, wherein the left and right clamper cam is Locking clamp device for a press, characterized in that the lower end surface is formed by sliding guide under the upper space portion of the upper die.