JPH0140692B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to door sashes and moldings for vehicles (hereinafter simply referred to as "moldings").
This invention relates to a bending device for moldings used to process objects in multiple dimensions.

Conventional technology When bending moldings, the molding material is supported by a holding device so that it can be slid along the axial direction, and then continuously fed into a bending roll device to insert the axial line. The molding material is continuously transferred between the holding device and the bending roll device by, for example, pivoting the bending roll device to the right or left along the cam groove of a cam plate that slides in the horizontal direction. An axis bending device can be applied to

Problems to be Solved by the Invention However, in such a bending device, the first
When it is necessary to bend a relatively large radius of curvature R ₂ to a relatively small radius of curvature R ₁ in the middle of R ₂ , such as the bumper molding for a vehicle shown in Figure 0,
Instantly changes the radius of curvature to R ₁ from the bending state with radius of curvature R ₂
, and then instantly return to bending with a radius of curvature R ₂ , the weight of the movable parts of the bending device is large, and this causes a time delay in the bending action due to inertia. It is difficult to perform accurate bending.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bending device for moldings that can instantaneously respond to changes in the bending shape of a molding material and can perform axial bending without being limited to the groove shape of a cam plate.

Means for Solving the Problems The bending device for moldings according to the present invention includes a bending roll device that inserts and supports the molding material, and a bending roll device that is mounted on a plate surface and that bends the molding material. The two upper and lower base plates are supported by a support shaft inserted into the plate surface position corresponding to the feeding axis, and the entire upper and lower base plates, including the bending roll device, are moved to the left or around the support shaft of the base plate. It is configured by providing a first drive mechanism that swings to the right, and a second drive mechanism that is attached to the lower base plate and that swings the upper base plate further to the left or right on the surface of the lower base plate. .

Function: In this molding type bending device, when bending a molding material to a relatively large curvature, the bending process is performed by swinging the entire upper and lower base plate on which the bending roll device is mounted using the first drive mechanism. Subsequently, when the axis of the molding material is bent or restored with a relatively small curvature, in addition to the swinging by the first drive mechanism, only the upper base plate is swinged by the second drive mechanism. Therefore, the synergistic effect of these oscillations allows instant countermeasures.

Embodiments The following description will be made with reference to FIGS. 1 to 9.

This bending device is used to manufacture moldings such as vehicle window molding materials and sashes from plastically deformable metal sheets. A roll forming machine 10 bends a strip material _M1 into a predetermined cross-sectional shape to form _a continuous molding material _M2 , and as shown in FIG. Guide cap 20 to prevent slippage and molding material M ₂
Following the holding device 30 for linearly sliding the molding material M 2 , a bending roll device is provided for bending the molding material M ₂ in a desired curve.

The holding device 30 includes a pair of left and right idle rolls 3 facing each other with a gap between the insertion of the molding material _M2 .
1, 32, 33, and 34 are arranged in front and behind each other, and are configured to support the axis of the molding material _M2 that is linearly slid and fed.

As shown in FIG. 1, the bending roll device 40 has guide frames 51a on the left and right sides on the plate surface of the machine stand 50.
It is mounted and arranged on a base plate 52 fixedly supported by 51b. For the base plate 52, the third
As shown in FIGS. 5 to 5, the base plate 41 is pivotally supported by a support shaft 42, so that the base plate 41 is swingably attached to the left and right. This base plate 41 consists of two pieces 41a and 41b stacked one above the other, both of which are pivotally supported by a base plate 52 via a support shaft 42. A cam mechanism is provided as a first drive mechanism that swings the two upper and lower base plates 41a and 41b including the bending roll device 40 to the right or left about the support shaft 42. As shown in FIG. 6, this cam mechanism is provided with guide pins 43a, 43b protruding downward from the tip side of a lower base plate 41a, which are used alternately and selectively. The cam grooves 44a, 44 of the cam plate 44 located below
The upper and lower base plates 41a and 41b including the bending roll device 40 are assembled to swing to the right or left by the cam grooves 44a and 44b as the cam plate 44 slides by engaging with the upper and lower base plates 41a and 41b. The cam plate 44 is positioned below the base plate 52 and is slidably supported by guide frames 51a and 51b, and is connected to the machine base 50 by a plurality of drive cylinders (not shown) connected and mounted in series. It is installed so that it can move horizontally back and forth. In addition to the cam mechanism, a second
A gear mechanism is provided as a drive mechanism for further swinging the upper base plate 41b including the bending roll device 40 to the right or left. As shown in FIGS. 3 and 4, this gear mechanism includes a worm gear 45a installed laterally on a plate surface near the tip of a lower base plate 41a, and a worm wheel 4 that meshes with the worm gear 45a.
5b on the tip edge of the upper base plate 41b. These worm gear 45a and worm wheel 45b are the worm gear 45a
The rotation of the upper base plate 41b swings on the surface of the lower base plate 41a around the support shaft 42, and the upper and lower base plates including the bending roll device 40 are rotated due to the sliding movement of the cam plate 44 due to the engagement. Base plate 41a, 41b
will swing to the right or left. As shown in FIG. 1, one end of the worm gear 45a is connected to a separate drive source 45c via a universal point and a retractable spline shaft. Further, a rising plate 46 is attached to the base plate 41 and stands upright from the upper base plate 41b perpendicular to the feeding direction of the molding material _M2 . A space through which the molding material _M2 is inserted is formed in the plate surface, and at least left and right bending rolls 47a and 47b are mounted on shafts in this space as shown in FIGS. 3-5. The bending roll 47a is 47b
is for bending the axis of molding material _M2 to the left or right. This bending roll 47
In addition to A.47b, upper and lower bending rolls 48a and 48b are provided at the rear spaced apart from each other so as to be able to swing up and down. The bending rolls 48a, 48b are provided so as to work together with the left and right bending rolls 47a, 47b to bend the axis of the molding material _M2 upward or downward. In addition to these bending mechanisms, each bending roll 47 is
a, 47b, 48a, 48b to stand up plate 4
A mechanism for twisting the axis of the molding material _M2 by rotating the rotary plate 49a with the worm wheel 49a and the worm gear 49c can also be provided. Note that the worm gear 49c is connected in the same manner as the worm gear 45a described above.

In the molding type bending apparatus configured as described above, after the metal strip material _M1 is bent into a predetermined cross-sectional shape using the roll forming machine 10, the molding material M1 is bent through the guide die 20 and the holding device 30. ₂ in succession and bending roll device 40
By feeding the molding material M 2 into the molding material M ₂ , the axis of the molding material M 2 can be curved to a desired curvature. When the bending roll device 40 receives a fixed length of molding material M ₂ fed linearly, the entire base plate 41 swings to the left or right from the state shown in FIG. 7 by horizontally moving the cam plate 44. By doing so, the molding material M 2 can be axially bent between the holding device 30 and the molding material M ₂ . At this time, if the desired curvature is relatively gentle and has a large rounded shape, it is sufficient to simply swing the entire base plate 41 to the left or right by moving the cam plate 44, but the curvature is changed during the bending process. Worm gear 4 that meshes with worm wheel 45b when forming into a small radius shape
5a to move only the upper base plate 41b to the lower base plate 41.
It swings around the support shaft 42 on the plate surface of a. In this swing, the entire base plate 41 swings by the cam plate 44 as shown in FIG. 8, and together with this, it becomes possible to instantaneously move to a large swing angle. Therefore, the molding material _M2 can be bent into a rounded shape with a small curvature, and the upper base plate 41b
By appropriately adjusting the swing angle of the cam plate 44, the axis can be bent along a desired curve regardless of the shape of the cam groove of the cam plate 44. In this way, the molding material M ₂ that has been subjected to continuous bending is the first
As shown in the figure, by feeding the material into a cutting device 60 and cutting it into a predetermined length, it is possible to manufacture moldings.

In addition, in the embodiment described above, the worm gear 45a and the worm wheel 45 swing the upper base plate 41b.
b is installed near the tip side of the base plate 41, but it can also be installed on the pivot side of the base plate 41 by the support shaft 42, as shown in FIG.

Effects of the Invention As described above, according to the bending device for moldings according to the present invention, in addition to swinging the entire upper and lower base plates by the first drive mechanism, the upper base plate is further moved by the second drive mechanism. Since the molding material can be swung in a synergistic manner, the molding material can be bent or returned to its original shape instantly even with relatively steep and small curvatures, and it is also possible to accommodate a variety of bending shapes of the molding material.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the entire bending device for moldings according to the present invention, FIG. 2 is a perspective view of a guide die installed in the bending device, and FIG. 3 is a part of the bending roll device. A cutaway side view, FIG. 4 is a plan view of the bending roll device, FIG. 5 is a front view of the bending roll device, FIG. 6 is a partial perspective view of the bending roll device incorporated into the bending device, and FIG. FIG. 8 is an explanatory diagram of the operation of the bending device according to the present invention, FIG. 9 is a partial plan view showing a swinging means for an upper base plate according to another embodiment, and FIG. 10 is an axis line showing an example of moldings. It is an explanatory view of curvature. _M2 : Molding material, 40: Bending roll device, 41: Base plate, 41a: Lower base plate, 41b: Upper base plate, 42: Swing shaft, 43a, 43b, 44,
44a, 44b: first drive mechanism, 45a, 45
b: Second drive mechanism.

Claims (1)

[Scope of Claims] 1. A bending roll device that inserts and supports the molding material, and a support shaft that is mounted on the plate surface and inserted into the plate surface at a position corresponding to the feeding axis of the molding material. A first drive mechanism that swings the entire upper and lower baseplates including the bending roll device to the left or right about the support shaft of the baseplates, and a lower baseplate that is supported by bearings. 1. A bending device for moldings, comprising: a second drive mechanism which further swings the upper base plate to the left or right on the surface of the lower base plate. 2. A patent in which the first drive mechanism is comprised of a slide plate that is movable horizontally back and forth by engaging a pin protruding downward from the plate surface position of the lower base plate with a right or left cam groove. An apparatus for bending moldings according to claim 1. 3. The second drive mechanism is comprised of a worm wheel provided on the upper base plate and a worm gear meshed with the worm wheel and rotatably attached to the lower base plate. Bending processing equipment for moldings.