JPS59167220A - Method and apparatus for working molding - Google Patents

Abstract

PURPOSE:To provide a notch, a through hole or a blind hole at a correct position by a method wherein an adhesive tape stuck on the back side of a molding is sheared with a shearing cutter to provide a break and to abut a rotary drill against the surface of the adhesive tape in the break. CONSTITUTION:A molding M on which an adhesive tape is stuck on its backside is wrought. Release paper S is stuck on the tape T and a shearing cutter 8 acts its edge on the tape T covered with the release paper S. The molding M is fed laterally at a specified length by a receptacle stand E and wrought with the shearing cutter 8 and a drill 15 at every feed. This working device can notch the adhesive tape T partially with the shearing cutter 8 to peel the chips with the drill edge 15 and discharge them upward. Accordingly, it becomes possible to provide the notch and blind hole exactly at a specified place. The shearing cutter 8 and the drill cutter 15 can be operated almost at the same time from the relation of their mutual arrangement and processing can be conducted very efficiently.

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a method for processing a molding, which involves cutting and removing an adhesive tape attached to the back side of the molding into a desired shape, and forming blind holes in the molding body as necessary. and its apparatus.

BACKGROUND TECHNOLOGY In general, moldings are fixed to the panel surface of a car body using double-sided adhesive tape, but since sufficient adhesion and fixation cannot be obtained with double-sided adhesive tape alone, the molding is fixed to the panel surface of the vehicle body using double-sided adhesive tape. The double-sided adhesive tape T attached to the back surface of the molding M is cut out in a circular shape at the end of the molding, and adhesive is filled into the cut-out groove to reinforce the bonding. In addition, as shown in Fig. 2, a boss B is planted on the back side of a molding M made by punching out double-sided adhesive tape T in a U-shape, and the boss is embedded and fixed in the panel surface of the vehicle body. Reinforcement is also being carried out to prevent the molding M from coming off.

Conventionally, these processes involve forming holes or notches with a press P while continuously feeding out the double-sided adhesive tape T before pasting the double-sided adhesive tape T on the back side of the molding M, as shown in Fig. 3. After that, a double-sided adhesive tape T is pasted on the back side of the molding M which is being conveyed intermittently, and the adhesive tape T is further cut to a certain size with a clipper C, thereby filling and adhering the adhesive described above and planting the boss B. This is done by punch-molding double-sided adhesive tape T so that this can be done. However, the adhesive tape T is elastic and may stretch while being rolled out before being attached to the molding M, so it is not possible to align the punching position with the desired position of the molding M and attach it. Further, even if it is possible to align the cut-out portion with the molding M at the desired position, there is a drawback that the position may shift due to shrinkage after the fact. This positional shift is especially caused when the boss B is installed in a molding M in which a blind hole has been formed in advance as shown in FIG.
This can easily lead to a situation where the information is hidden.

DISCLOSURE OF THE INVENTION It is an object of the present invention to provide a method and apparatus for processing a molding, which can easily make notches and holes in an adhesive tape without causing positional displacement, and can also form blind holes in the molding as necessary. purpose. - That is, in the molding processing method according to the present invention, the adhesive tape attached to the back side of the molding is cut with a shearing blade having a U-shaped or round cutting edge to make a cut, and the purpose of the cut is By applying a rotating drill blade to the surface of the adhesive tape, chips are peeled off and removed, and the processing equipment is a U-shaped, round, etc. flat surface of the adhesive tape, and the blade is hollowed out toward the cutting edge. It is equipped with a shearing blade that is shaped like this, and a drill blade that can be rotated is placed inside the blade of the shearing blade.
By arranging both of them so that they can move up and down, and by attaching the drill blade so that it can protrude or retreat from the cutting edge of the shearing blade, you can instantly create holes, notches, etc. in the adhesive tape on the back of the molding at the same position. It is configured to form a blind hole.

Examples This will be explained below with reference to the processing apparatus shown in FIGS. 4 and 5.

This processing device cuts out a U-shaped notch at regular intervals along the longitudinal edge of the highly elastic adhesive tape T attached to the back surface of the molding M, as shown in the second figure, and moreover, within the notch plane. A blind hole is formed on the back surface of the molding M in which the boss B is installed.

Referring to Fig. 4, the processing device is the left and right guide bar 1
, 1 has an elevating plate 2 supported vertically and slidably,
The crossbeam brackets 3 and 4 are fixedly attached to the board surface in parallel vertically with a distance between them.

A shearing blade 8 is provided via a holder 7 at the lower end of the shafts 5 and 6 which are inserted through the respective brackets 3 and 4 and arranged to hang therebetween. The shafts 5 and 6 each have a collar 9゜10 screwed onto each axis, and the collar 9
．． 10 is engaged with the upper surface of the crossbeam bracket 4 located below, so that it is supported by each bracket 3, 4 so as not to come off. Further, the shafts 5 and 6 have extension springs it and tz fitted on each axis between the upper crossbeam bracket 3 and the collars 9 and 1o, and are biased vertically by the springs 1.1 and l2. It is installed so that it can be moved freely. The shearing blade 8 has a U-shaped cutting edge in a plane corresponding to the notch shape shown in the second figure, and its holder 7 is fitted onto the axes of the shafts 5, 6, and reverse threads 13a, 13b, 14a.

Shafts 5 and 6 can be attached and detached by tightening with 14b.
is attached to the lower end of the shaft. Further, the shearing blade 8 is formed so that the blade has a hollow horseshoe-shaped cross section toward the cutting edge (see Figure C), and a drill blade 15 that is rotatably driven is provided within the blade. The main body of the drill blade 15 is attached to the upper and lower cross beam brackets 3 and 4, and the drill blade 15 is inserted so as to be surrounded by the shear blade 8. The drill blade 15 and the shear blade 8 are both movable up and down by a drive cylinder 16 whose rod tip is connected to the elevating plate 2. Either an air cylinder or a hydraulic cylinder may be used as the drive cylinder 16, and the cylinder opening may be fixed to a machine frame (not shown) so that the cylinder opening can be expanded and contracted with a constant stroke. In the illustrated embodiment, when the drill blade 15 moves down to a certain position, the shearing blade 8 performs a cutting operation. Oak) 17
．． When the blade 18 comes into contact with the lower crossbeam bracket 4, the shear blade 8
is configured so that it can perform a cutting operation.

With the molding processing apparatus configured in this way, it is possible to perform machining on the molding M to which the adhesive tape T has been previously attached to the back surface. A release paper S is attached to the adhesive tape T, and the shearing blade 8 acts on the adhesive tape T coated with the release paper S with its cutting edge. Also,
The molding M is transversely fed by a fixed size on the pedestal E, and the shearing blade 8 is used for each feed. Machining is performed using a drill blade 15.

Referring to FIG. 5, when the molding M is fed into a predetermined position directly below the shear blade 8 and the drill blade 15, the drive cylinder 16 extends its stroke and the shear blade 8 attached to the lifting plate 2. It moves downward together with the drill blade 15. When the cutting edge of the shearing blade 8 comes into contact with the Is pattern S of the adhesive tape T as it moves downward, the rod 5.6 is deflected upward while pressing the spring 11.12, and the shearing blade 8 is It waits at the contact position with the adhesive tape T. (See figure a).

Further, the stroke of the drive cylinder 16 is extended, and the drill blade 15, which has already been rotated, protrudes from the cutting edge of the shearing blade 8 and continues its downward movement until it cuts into the adhesive tape T (see figure) and forms a blind hole in the molding M. Then (see Figure C), the positioning nuts 17 and 18 come into contact with the lower crossbeam bracket 4 and press the shear blade 8 into the adhesive tape T.

By pressing the press-in, a cut is made in the adhesive tape T, and the part of the adhesive tape within the cut date is cut by the drill blade 1.
With rotation 5, it is peeled off from the molding M and discharged upward.

Thus, in this processing device, the adhesive tenor T previously pasted on the back surface of the molding M can be partially cut out with the shear blade 8, and the chips can be peeled off with the drill blade 15 and discharged upward. Therefore, notches and blind holes can be formed accurately at desired positions. Moreover, since the shearing blade 8 and the drill blade 15 can act almost simultaneously due to their mutual arrangement, extremely efficient processing can be performed.

In addition, in the processing device described above, the blade type of the shearing blade 8 can also be applied, and in that case, since a blind hole is not formed, the drill blade 15 is sheared with the positioning nuts 17 and 18 so that it acts only on peeling off chips. The downward stroke of the blade 8 and the drill blade 15 may be adjusted. In addition, when peeling off the chips, the shearing blade 8 and the drill blade 15 are placed at different positions, instead of being performed at the same position as the cutting of the adhesive tape as in the above-mentioned processing device. The peeling and peeling may be performed individually.

Effects of the Invention As described above, according to the molding processing method according to the present invention, the adhesive tape is pasted on the molding and then the adhesive tape is cut to form the notches and holes, so the notches and holes can be placed at desired positions. In addition, the processing equipment uses a shear blade and a drill blade at the same position to separate chips and create notches and holes, making the process extremely efficient. You will be able to do this.

Figures 1 and 2 are explanatory diagrams showing examples of molding processing;
FIG. 3 is an explanatory diagram showing a conventional molding processing method and apparatus, FIGS. 4 a-C are explanatory diagrams showing a molding processing apparatus according to the present invention, and FIGS. 5 a-c are explanatory diagrams of the same operation. It is.

M: Molding, T: Adhesive tape, 8: Shear blade, 1
5 nitrile blade.

Patent Applicant Hashimoto Forming Industry Co., Ltd. Representative Patent Attorney Kazuo Takeshita / Diagram 4 θ Ka 47b Rod 5 Seki a Ka 5 Dia 5 b 〕 M b Figure 25 C

Claims (1)

[Scope of Claims] /1) A shearing blade with a U-shaped or round cutting edge plane cuts the adhesive tape stuck to the back side of the molding into a desired shape, and cuts the adhesive tape surface within the cut. A molding processing method characterized in that the molding is removed as chips by applying a rotationally driven drill blade to the molding. (2) Cut the adhesive tape stuck to the back of the molding into the desired shape using a shearing blade with a U-shaped or round blade, and drive the adhesive tape inside the cut to rotate. A method for processing a molding, which comprises removing the molding as chips by applying a drill blade, or removing the molding as chips and scraping off the molding to a certain depth to form a blind hole. (3) In order to cut the adhesive tape stuck to the back side of the molding into the desired shape, a cut is made and the tape inside the cut is peeled off as scraps, and if necessary, a blind hole is formed in the molding. It is a processing device that has a shearing blade whose cutting edge is U-shaped, round, etc. and hollowed out toward the cutting edge, and is equipped with a drill blade that can be rotated within the blade of the shearing blade. A molding processing device characterized in that a drill blade is arranged so as to be movable up and down, and a drill blade is mounted so as to be movable to protrude or retreat from the cutting edge of a shearing blade.