JPH0641693Y2 - Double cam type bending machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The disclosed technology belongs to the technical field of the structure of an apparatus that performs an off-bending process on an end portion of an automobile panel member or the like.

Thus, the present invention is an apparatus for bending an end portion of a panel member of an automobile, and lowering it with respect to a fixed cam which is connected to an upper ram through an upper die. At this time, there is provided a twin cam type guide cam that slides with the fixed cam, and a working cam that slides relatively to the guide cam, and the working cam has a bending blade with respect to the end of the work. In particular, the machining cam is formed into a twin type that is integrated through an underbridge having a U-shaped vertical cross section, and the front part is also fixed by a twin cam type that is also integrated through an overbridge. There is a sliding portion for the cam, and a rear side is provided with a bending blade for the end portion of the workpiece guided through the guide portion of the guide cam, and between the bending blade and the sliding portion for the processing cam. Information There is devised according to the preferred bending apparatus of Daburukamu expressions machining cam provided slidably to the processing cam based.

<Prior Art> As is well known, many parts are assembled in a mechanical device, etc. Among them, many parts made by pressing a plate material are used. For the purpose of strengthening, a part in which so-called bending is applied to an end portion is often used. As a press device for performing the seed bending, for example, a device disclosed in Japanese Utility Model Laid-Open No. 61-158318 is disclosed. A cam-bending device having a cam structure having a bending blade is used.

Then, in the case of the bent parts, for example, the fourth and sixth parts are used.
A so-called double cam type off-bending apparatus 3 as shown in FIG. 7 is used when processing the off-bending portion 2 on the work 1 as shown in the figure.

In this type of double cam type bending apparatus 3, a base guide cam 5 slidably provided on a lower die on a bolster table 4 has a slide portion 6 on the inner rear side, and a guide portion on the front side. It has a portion 7 and is opposed to a pad 8 so as to clamp the work 1 and is opposed to a fixed cam 9 connected to an upper ram (not shown) through an upper die. In this case, a processing cam 11 having a bending blade 10 at the front has a slide portion 12 for the guide cam 5 and a slide portion 13 for the fixed cam 9, and the fixed cam 9 slides the guide cam 5 when it descends. The work piece 1 slides with the guide portion 7 through the guide portion 7, and then the fixed cam 9 moves the processing cam 11 toward the guide portion 7 through the slide portion 13 to shift the bending blade 10 and the guide portion 7. And to bend the edge of the work 1 It is.

Therefore, as shown in FIG. 7, since the processing cam 11 is slidably provided inside the U-shaped guide cam 5 in the conventional mode, it strongly interferes with surrounding equipment,
There were various problems.

<Problems to be solved by the invention> That is, the transfer press machine is equipped with such a bending device 3 and the bending part of the work 1 is clamped by fingers 14 from a gripper rail 15 as shown in FIG. As shown in FIGS. 8 and 9, the gripper rail 15 serving as a base to which the finger 14 on the press equipment side is attached, the processing cam 11, and the guide cam 5 as shown in FIGS. A portion H '(a portion shown in double cross hatching in FIG. 9) that interferes with the above, and a portion H (a single portion in FIG. 8) where the finger 14 and the fixed cam 9 interfere when the finger 14 returns. Due to the hatching (shown in the figure), the transfer press machine plant could not be equipped.

In FIG. 8, the white arrow F indicates the feed direction of the work, the white arrow P of FIG. 9 indicates the press direction, 1 is the work at the time of bending, and 1'is the bend. It shows a processed work.

In particular, in a mode in which the work 1 has a cutout portion 1 as shown in FIGS. 8 and 10, the cutout portion 1 is effectively used to prevent interference with the work 1 in order to secure a vertical movement region of the solid cam 9. In order to avoid this, as shown in FIG. 9, the guide cam 5 and the fixed cam 9 in an eccentric posture are arranged, so that there is a disadvantage that an eccentric load acts.

To deal with this, if the fingers are attached in a complicated structure, there are disadvantages that the entire device becomes extremely large and assembly and manufacturing are difficult, resulting in a significant increase in cost. was there.

The purpose of this invention is to solve the problem of equipping a transfer press machine with a double cam type bending apparatus based on the above-mentioned conventional technique, and to make full use of the advantages of the double cam type bending apparatus, the transfer is performed. It can be installed in a press machine, interference between the gripper rails and fingers can be avoided, fingers can be clamped even for workpieces without a cutout portion, and the double cam method can surely perform side-bending processing for the edge of the workpiece. In addition, it is intended to provide an excellent double cam type bending apparatus which is useful in the field of forming technology application in the machinery manufacturing industry.

<Means for Solving the Problems> In order to solve the above-mentioned problems, the structure of the present invention, which has the above-mentioned purpose as the gist of the above-mentioned utility model registration claim, is provided in a fixed cam that is linked to a ram through an upper mold. In a bending machine in which a processing cam that slides relative to a guide cam that slides against it has a bending blade for the end of the workpiece, the guiding cam is linked to a fixed cam fixed to the upper die The technical means is provided so as to be slidably attached to the inner side of the processing cam along the longitudinal direction of the processing cam.

<Operation> Then, the bending press is installed in the transfer press machine and the fingers are moved by the bending to clamp the work regardless of the presence or absence of the cut-out portion, and to bend the end of the work. At this time, the work is positioned in a predetermined manner, and the fixed cam of the twin cam type, which is connected to the upper ram through the upper die and integrated through the overbridge, descends and the first underbridge with the U-shaped vertical section is used. Engage with the sliding part of the guide cam installed inside the integrated twin-cam type machining cam to move the guide cam rearward to set the work in the side-bending machining position, and then to the fixed cam. Engages with a U-shaped machining cam and moves through a sliding portion, and uses a side-bending blade provided on the inner side of the rear portion to come into close contact with a work engaged with the guide portion of the guide cam, Predetermined Since the guide cam is provided inside the U-shaped machining cam so that the work is not bent, both the fixed cam and the machining cam are eccentric. Therefore, the eccentric load does not act, and the fingers provided on the gripper rail of the transfer press machine do not interfere with the guide cam and the processing cam, and the workpiece can be clamped and bent smoothly. , The bending machine is also compact,
High-speed bending is continuously performed to improve productivity and reduce costs.

<Embodiment> Next, a first embodiment of the present invention will be described with reference to FIGS.
The following is a description with reference to FIGS.

It should be noted that parts that are the same as those in the drawings starting from FIG. 7 will be described using the same reference numerals.

Reference numeral 3'denotes a double cam type bending apparatus which is the center of the invention, and as shown in FIGS. 11 and 12, there is a mode in which an end portion of a work 1 which is not in the cutout portion is bent 2 ". , An upper portion of a lower die 4 on a bolster (not shown) has a vertical cross section of a substantially U shape so as to be laterally movable via a slide portion, and left and right twin cams 1 through an underbridge 16.
A machining cam 11 'of a type in which 1 "and 11" are integrated is provided, and a single type guide cam 5'is slidable with respect to the machining cam 11' through a sliding portion 12 therein. It is provided.

Therefore, as shown in FIG. 1, the machining cam 11 'and the fixed cam 9'are not biased and are arranged in a well-balanced cam space, and the work 1 does not have a cutout portion, but the guide cam 5', the machining cam It is set in the idle stations 18 and 19 and the processing station without interfering with the cam 11 '.

In this embodiment, as can be seen by comparing FIGS. 2 and 7, the processing cam 11 'and the guide cam 5'are formed so as to have completely different shapes from those of the conventional mode (therefore, reference numerals are used). However, in the present embodiment, the guide cam 5'is used as a guide cam by having a guide function for the work 1 and is also a machining cam. 11 'is used as a processing cam by having a function of performing a bending process, and its name is not decided depending on the shape similarity with the conventional mode in the drawing.

A guide cam 5'is provided at the front part (left side in FIG. 3) of the processing cam 11 ', and fixed to the sliding part 13' of the guide cam 5'by connecting it to the upper ram through the upper die. Twin cam 9 ″, in which the cam 9 is integrated via the upper bridge on the lower side of the upper mold,
9 "and are provided so as to face each other, and a bending blade 10 is integrally provided inside the rear portion of the processing cam 11 '(on the right side in FIG. 3) as shown in FIG. Has been.

The fixed cam 9 is adapted to slide vertically with respect to the guide cam 5'via a sliding portion 13 ', as shown in FIG.

In addition, 8 is a pad and 15 is a gripper rail, and fingers 14 for the work 1 are extended forward to form a transfer press machine.

In the above-mentioned configuration, the twin cams 9 ″ and 9 ″ are integrated through the upper die by the ram (not shown) with the end of the workpiece 1 at the set position clamped and set by the fingers 14 of the gripper rail 15 of the transfer press machine. When the fixed cam 9 descends along with it, the fixed cam 9
First comes into contact with the sliding portion 13 of the guide cam 5 ', whereupon the guide cam 5'moves via the sliding portion 12 of the working cam 11' to the right side in FIG. The work 1 is set at a predetermined position via the guide portion 7, and the fingers 14 of the gripper rail 15 move the work 1 to the processing posture before the ram descends, where the pad 8 guides the end of the work 1 to the guide cam 5 ′ Is brought into contact with the rear guide portion 7, and at that timing, the twin cams 9 ″, 9 ″ of the fixed cam 9 are further lowered and the working cam 11 ′ is moved to the left side in FIG. 3 through the sliding portion 13 ′. That is, it is moved forward and the bending station 10 is used at the processing station 20 shown in FIG.

During this time, the machining cam 11 'and the fixed cam 9 are twin type and are arranged in good balance, and since the guide cam 5'is a single type, no eccentric load is generated in the cam space, and there is no backlash or deviation. Smooth bending is performed without any occurrence.

Then, the work 1 that has been subjected to the bending process by a process reverse to the above process is lifted up as a product, the fingers 14 clamp the product, and the product is conveyed to a processing station (not shown).

Also in this case, the imbalance does not occur due to the eccentric load.

Since the guide cam 5'and the fixed cam 9 are set inside the work piece 1 in this manner, the guide cam 5'and the processing cam 11 'do not move at all when the gripper rail 15 and the fingers 14 move forward and backward. There is no interference, the device is compact and operates with less interference in cycle operation.

The embodiment of the present invention is not limited to the above-mentioned embodiment, and various embodiments such as providing a magnet in the guide portion of the guide cam can be adopted.

Further, it is applicable even in the case where the work has a cutout portion or the like.

<Advantages of the Invention> As described above, according to the present invention, the vertical cross section U is basically formed in the lateral bending apparatus for the workpiece whose lateral end is laterally bent.
A single type guide cam is provided inside the twin cam type processing cam that is integrated with the under bridge, and the fixed cam is a twin cam type that is integrated with the upper mold via the over bridge. As a result, the guide cam and processing cam do not interfere with the gripper rails and fingers of the transfer press machine, and therefore, the excellent effect that the off-bending device can be attached to the transfer press machine and installed. To be done.

Thus, although the structure has a double type cam mechanism based on the processing cam as in the conventional mode, it can be made compact, so that the occupied space in the transfer press machine is reduced, Also, there is less interference with the equipment, and the excellent effect of facilitating work in the surroundings is achieved.

Also, due to the compact bending device,
Since the die manufacturing cost is reduced, the cost is reduced and the power cost is reduced, the running cost can be reduced, and further, the storage space for the guide cam to be replaced and the processing cam can be reduced. There are also secondary advantages.

In addition, the compactness reduces the weight of the apparatus and enables high-speed processing accompanying high-speed conveyance by the gripper rails, so that there is an advantage that the number of parts allocated to the transfer press machine can be increased and the productivity can be improved.

[Brief description of drawings]

1 to 6 are explanatory views of an embodiment of the present invention.
Fig. 1 is an overall schematic plan view, Fig. 2 is a sectional view taken along the line II-II of Fig. 1, Fig. 3 is a sectional view taken along the line III-III of Fig. 1, Fig. 4 is a side view of Fig. 1, and Fig. 5 is a workpiece. FIG. 6 is a partial perspective view of FIG.
-V cross-sectional view, FIG. 7 is a cross-sectional view of a near-side bending apparatus based on the prior art, FIG. 8 is a virtual plan view of near-side bending processing applied by a transfer press machine by the near-side bending apparatus of the related art, and FIG. The same side view, FIGS. 10 and 11 are perspective views of the work,
FIG. 12 is a sectional view of FIG. 9 ... Fixed cam, 5 '... Guide cam, 11' ... Machining cam, 10 ... Side bending blade, 3 '... Side bending machine

Claims (1)

[Scope of utility model registration request] 1. A lateral bending apparatus in which a processing cam that relatively slides with respect to a guide cam that slides with respect to a fixed cam that is linked to a ram via an upper die has a lateral bending blade with respect to an end of a work. A double cam type bending apparatus, wherein the guide cam is linked to a fixed cam fixed to an upper die and is attached to the inside of the processing cam so as to be slidable along the longitudinal direction of the processing cam.