JPS6313862Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bending device that can continuously perform internal and external bending of the peripheral edge of a panel, etc. in a continuous forming device for non-standard door panels.

[Problems to be solved by the prior art and the invention] Some door panels of this type have their peripheral edges bent in opposite directions. However, in this case, since the bending direction is reversed, two folding devices are required, which has disadvantages such as making the processing process complicated and increasing equipment costs. Therefore, as shown in Japanese Patent Application Laid-open No. 54-090063, there is a known bending device that can perform internal and external bending, but this device operates by having blades facing each other vertically with a plate in between. ing. However, in this case, the upper blade body is bent at the same position, so after the first bending process, the plate must be reset to the processing position before the second bending process is performed. However, there is still the problem of poor work efficiency.

[Means for Solving the Problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a continuous folding device for the inside and outside of a board that can eliminate these drawbacks. A continuous bending device that continuously bends in opposite directions, the continuous bending device is connected to a punching die that punches the plate material and performs a first bending process on either the inside or outside, and a punching die facing the punching die. The rotary mold is arranged to rotate toward the punching die side and performs a second bending process in the opposite direction to that of the punching die, and the rotary mold is configured to It is characterized in that it is configured to be placed in advance at the two-curve machining position and to serve as a receiving mold for the first curve machining.

With this configuration, the present invention allows for extremely efficient bending of the inside and outside.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a plate material whose back surface has been coated with adhesive in a previous step and cut to a predetermined size.The plate material 1 is placed on a pallet truck 2 (FIG. 3) and set in a sheet feeding device 3. In the sheet feeding device 3, a suction device 4a attracts the plates 1 one by one, and the sheets are sent to the next reversing machine 5 by a magnetic roller 4b.
In this case, since adhesive has already been applied to the plate material 1, a urethane foam material is attached to the lower surface of the suction rubber to facilitate suction. Note that the reversing machine 5 is used for alternately producing front and back surface materials for every other sheet, and a conveyor 5a with a magnetic roll is rotated 180 degrees by a rotating drum 5b to reverse the sheet materials. It is becoming possible to do this. That is, FIG. 3 1a shows a plate material that is not inverted, and 1b shows a plate material that has been inverted by the inverting machine 5, which are subjected to symmetrical notching in the next process and then bent in the bending process according to the present invention. This is a set of surface materials that make up the front and back sides of the door.

Reference numeral 6 is a unit press exclusively for notching the bent portion, and first the notches 6a at the four corners are cut out. The unit press 6 has independent heads 14, 15, and 16, and can cut various products by moving their positions. Reference numeral 7 denotes a unit press dedicated to notches and holes in bent portions other than the four corners, and in this step, notches 7a for lock attachment, attachment holes 7b, hinge attachment holes 7c, etc. are press-worked. Each head is independent, and depending on its position, it is possible to cut out various products. Reference numeral 8 denotes a reversing machine similar to the reversing machine 5, and only the plate materials 1b that have been reversed every other sheet by the reversing machine 5 are reversed. However, the plate material 1 that has passed through the reversing machine 8
The adhesive coated surfaces of both a and 1b face upward.

The plate materials 1a and 1b that have left the reversing machine 8 are then sent to one short side bending machine 9 by an insertion feeder a, and one short side 9a is bent at a right angle. Furthermore, it is sent to the short side bending machine 10 via the in-machine feeder 9b, and the remaining short sides are bent at right angles. The plate material whose short sides have been bent is then sent from the long side bending machine 11 to the other long side bending machine 12 for bending. The long side bending machine is designed to be able to perform internal and external bending by selecting a stopper, and the selection of each bending is performed by a select switch. The feeding inside the special machine for bending is done by a geared motor. Positioning and product extrusion are performed using an air cylinder. In this way, a box-shaped surface material A with four bent sides is formed. The surface material A is formed alternately on the front and back sides, and sent to the next step (not shown), where a core material such as a honeycomb material is sandwiched and bonded between both surface materials in a sandwich-like manner.
In addition, b is a feeder for sending out from the short side bending machine 10, c is an insertion feeder for the long side bending machine 11, d is an insertion feeder for the long side bending machine 12, and e is for transporting the surface material A after bending to the next stocker. (not shown). Note that 13 is a feeder installed perpendicularly to the part of the feeder a inserted into the short side bending machine 9, and the feeder 13 allows special order products to be installed separately because they cannot be processed with the unit presses 6 and 7 of this device. The notches are cut in a punching press and the adhesive coated surface material is fed in so that it can undergo the next bending process.

Now, the peripheral edge bending device comprised of the short side and long side bending machines 9, 10, 11, and 12 in the above-described forming device will be explained next.

First, with reference to FIGS. 4 to 8, the operation of the short side bending machines 9 and 10, which are dedicated to L-shaped 90° bending machines, will be explained. First, (1) When the plate material 1 that has been cut and drilled in the previous process is sent over the insertion feeder a, the limit switch 18 detects it and the long side stopper 17
comes out and stops the plate 1.

(2) At the same time, the long side pusher 19 comes out.

(3) The short side pusher 20 then emerges to position the plate 1 and clamp it by means of a clamping device 21 operated, for example, by the pinion rack system.

(4) Then, the inner bending device 22 is rotated upward by the cylinder 23 to perform right angle bending.

(3) The short side pusher 20 then emerges to position the plate 1 and clamp it by means of a clamping device 21 operated, for example, by the pinion rack system.

(4) Then, the inner bending device 22 is rotated upward by the cylinder 23 to perform right angle bending.

(5) The in-machine feeder 9b is started, and the plate material 1 is sent to the short side bending machine 9 again.

(6) The short side on the tip side is bent by the short side bending machine 9.

(7) It is sent to the short side bending machine 10 by the in-machine feeder 9b. In this bending machine 10 as well, the bending machine 9
An operation similar to that shown in FIG. 7 and FIG. 8 is performed.
First, (1) When the plate material 1 that has been bent in the previous process is fed onto the in-machine feeder 9b, the limit switch 24 detects this and the long side stopper 25 comes out to stop the plate material 1.

(2) At the same time, the long side pusher 26 comes out.

(3) The short side pushers 27 then come out to position the plate 1 and clamp it by means of a clamping device 28 operated, for example, by the pinion rack system.

(4) Then, the inner bending device 29 is rotated upward by the cylinder 30 to perform right angle bending.

Now, once the short side has been bent, it is sent to the long side bending machine 11 according to the present invention via the output feeder b. The long side bending machine 11 is capable of successively performing one outward bend and two subsequent inward bends as shown below. By selecting and switching the select switch, the short side stopper 35 is operated in response to each of these curve processing operations. Note that the bending blade (mold) of the long side bending machine is provided with a notch so that the short side will not interfere with long side bending since the short side has already been bent.

Referring to FIG. 9, in order to send the plate material that has been notched in the previous step onto the insertion feeder c into the side bending machine for the next bending process, it is possible to feed it by the in-machine feeding device 32. can. 33 is an extrusion device that returns the bent plate material to the insertion feeder c.

Figures 10a, b, and c show the operating principle of the long side bending machine 11. Figure 10a shows the case of outward bending (first bend), and Figures 10b and c show the operation principle of the long side bending machine 11. This shows a case where two inward bends (second and third songs) are performed. That is, the outer bending device 40 is
The inward bending device 39 is used twice in this order.
The outer bending device 40 is arranged facing upward, and the inner bending device 39 is arranged facing downward. Then, the outer bending device 40 is inserted into the punching die 40a by the extension of the cylinder.
moves downward, and the inner bending device 39 is such that the rotating die 39a rotates as the rotating die 39a expands. Moreover, the rotary mold 39a is placed on the lower surface of the plate material 1 and operates as a receiving mold for the first bending process. In Fig. 11, 1, 2, and 3 are changeover switches, where 1 indicates one inward bend, and 2 indicates two inward bends.
3, the short side pusher 37 and the clamp device 3 are used to bend the outside once and bend the inside twice.
8. A switch for commanding the internal and external bending devices 39 and 40. By selecting and setting these switches 1 to 3, the desired bending process can be performed continuously.

The order of bending by the long side bending machine 11 of the present invention having the above configuration will be explained with reference to FIGS. 10 to 12.

The limit switch 34 detects the plate material 1 fed onto the insertion feeder c, and the stopper 35 rises to stop the plate material 1.

The plate material 1 is fed laterally by the in-machine feeding device 32.

Long side pushers 36 operate to correct longitudinal positional deviations.

Based on a preset command, the short side pusher 37 operates to determine the widthwise position (direction perpendicular to the traveling direction) of the plate material.

A presser blade 38a at the tip of a clamping device 38 that operates in a pinion-rack manner holds the plate 1 in place.

Due to the extension of the cylinder of the outer bending device 40, the mold 40a is lowered from above to perform one round of outer bending. In this case, the lower presser blade opposite to the upper presser blade 38a is also used by a rotary mold 39a that performs inward bending, which will be described later.

Next, the rotary mold 39a is turned into an inner bending device 39.
Due to the extension of the cylinder 39b, the cylinder 39b rotates from the bottom to the top to perform the first inward bending.

Following the above, the clamping device 38 is loosened by a preset command.

Next, the short side pusher 37 further feeds the plate 1 to the bending position and sets the position, and the plate 1 is set in the normal position in the same manner as described above.

In the same way as above, one more round of inward bending is performed, and this completes the bending of the long side.

As described above, in the present invention, the internal and external bending is performed by the same bending devices 39 and 40,
In this case, the first bending process is thrust bending by the downward movement of the thrusting die 40a, and the second bending process is the bending by the downward movement of the thrusting die 39a.
Rotational bending occurs due to the rotation of. Moreover, in this case, the rotary mold 39a rotates the plate material 1 in the first bending process.
The rotary mold 39a is also used as a lower receiving blade for receiving the plate material 1, and the rotating mold 39a can perform internal and external bending immediately after the bending by the punching mold 40a is completed, without having to feed the plate material 1. Therefore, it is possible to simplify the machining process and improve work efficiency.

[Operation and Effect] In summary, since the present invention is constructed as described above, the continuous bending process of the inside and outside of the plate material is
Since the rotating die is placed in the bending position in advance, the first bending process is performed using the punching die, and then the second bending process is performed using the rotating die without setting the position of the plate material. All you have to do is process it, so the first step is to process it.
Since the transition from the bending process to the second bending process is almost continuous, the working time for the internal and external bending process is significantly shortened. Moreover, in this case, the rotary mold that has been placed in advance at the bending position is the first one.
Because it is also used as a receiving mold during the bending process,
There is also the advantage that the structure of the bending device that performs internal and external bending continuously is simplified, which greatly contributes to production efficiency and cost reduction.

[Brief explanation of the drawing]

The drawings show an embodiment of the folding device capable of bending inside and out according to the present invention, in which FIG. 1 is a plan view of a plate material after the notch process, FIG. 2 is a plan view of the forming device, and FIG. The figure is a side view of the forming device with the processing status of the plate material added, Figure 4 is a side view of the short side bending machine, and Figure 5
Figure 7 is a side view of the short side bending machine on the entry and exit sides.
Figures 6 and 8 are plan views of the insertion and delivery feeder of the short side bending machine, Figures 9 and 11 are side views and plan views of the long side bending machine, and Figures 10 a, b, and c are FIG. 12, an explanatory diagram of the long side bending principle, is a view taken along the X arrow in FIG. 1. In the figure, a and b are insertion and delivery feeders, c,
d is the insertion and delivery feeder, e is the finished product feeder, A is the surface material, 1 is the plate material, 1a is the plate material that is not reversed, 1b is the plate material that is reversed, 9 and 10 are the short side bending machines, 11 and 12 are the long sides Bending machine, 9a is the short side, 11
a, 12a are long sides, 14, 15, 16 are heads,
17 is a stopper, 18 is a limit switch, 1
9, 20 are long sides, short sides are pushers, 21 is a clamp device, 22 is an inner bending device, 23 is a cylinder, 24
is the limit switch, 25 is the long side stopper, 2
6 and 27 are long sides, short sides are pushers, 28 is a clamp device, 29 is an inner bending device, 30 is a cylinder, 3
2 is an in-machine feeding device, 33 is an extrusion device, 34 is a limit switch, 35 is a stopper, 36, 37
is the long side, the short side is the pusher, 38 is the clamp device,
38a is a presser blade, 39 is an inner bending device, 39a is a rotary mold, 39b is a cylinder, 40 is an outer bending device, 4
0a is a punching die.

Claims (1)

[Scope of utility model registration request] A continuous bending device that continuously bends a plate material in opposite directions, the continuous bending device including a punching die that punches the plate material and performs a first bending process on either the inside or the outside, and the punching die. The rotary mold is arranged to face the mold and rotates toward the punching mold side to perform a second bending process in the opposite direction to the punching mold, and the rotary mold includes: A continuous internal and external bending device for a plate material, characterized in that the device is configured to be applied in advance to a second bending position of the plate material and to serve as a receiving mold for the first bending process.