JPS60174218A - Method and device for bending annular element - Google Patents

Abstract

PURPOSE:To execute a bending at a high speed by placing a plate-shaped filter medium creased in advance, on a die on which circular arcuate crest and trough parts have been provided in parallel, and pushing and holding successively its corresponding punch plate from the circle diameter side. CONSTITUTION:A creased plate-shaped filter medium 2 is pushed against a slanting surface 3a of a die 3 by a clamper 14, and held by an air pressure cylinder 13. A frame plate 7 is made to descend by a hydraulic cylinder 10 and air pressure cylinders 8a-8e are made to descend simultaneously. The lowest punch plate 4a depresses a crease of the innermost diameter side, hits against a trough part 3b of the die 3 and stops, and the first crest and trough are formed. The same operation is executed successively up to a bending of a punch plate 4e, and also the pressure is held, and an annular element 21 is formed. According to this method, a bending of the filter medium is executed at a high speed, and also a variation of a formed article is reduced.

Description

[Detailed description of the invention] A small size and a light spare part, a strange one, n, 7, 11, λ, J
The present invention relates to a method for folding small pieces and an apparatus therefor.

As shown in FIGS. 1 and 2, the conventional method for manufacturing a ring-shaped element is to place a flat plate-shaped element on a corrugated elastic flexible film, such as a corrugated film made of thermoplastic polyethylene. 2, and a person manually removes the furnace material 2.
The method involved combining the film 1 and the film 1 and folding the film 1 to match the waveform formed by the film 1. In such a method, in order to prevent springback of the furnace material 2, it is troublesome to always press the folded portion by hand. Further, for example, it takes about 2 minutes to bend an element having an outer diameter of about 300 MTR, resulting in a problem of extremely low productivity. Furthermore, with such manual bending, it is not possible to make the amount of bending of each part uniform, resulting in an irregular shape of the whole, which results in variations in overflow performance and appearance. There was a problem of a decline in product value.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a highly productive method of folding ring-shaped elements and an apparatus therefor.

Therefore, according to the present invention, a fan-shaped strip having a crease at the crease position is placed on a conical curved surface on a washboard-shaped lower mold so that it hits the slope of the peak on the inner diameter side of the lower mold. 171
- While holding it with a sikuramba, a plurality of upper mold plates arranged in accordance with this conical curved surface are partially lowered to bend the door inward one after another and maintain the upper mold play 1 until the bending is completed. A method for folding a ring-shaped element is provided, the main feature of which is to hold it in place, as well as an apparatus for use in the successful implementation of this method.

An embodiment of the present invention will be described below with reference to FIGS. 3, 4, and 5.

FIG. 3 shows the process of folding a flat plate. Figure 3k)
In the figure, reference numeral 2 denotes a fan-shaped plate-like furnace material made of a non-woven fabric material having a density gradient, and the surface thereof is provided with creases 2a at the positions where the creases are to be formed by a heating mold or a Thomson blade.

Figure 3 Ga) +The starting point is the 1 river not shown in the figure. The state shown in Fig. 3 (g) is a state in which the bending action has been performed halfway between the bending action and the rounding action when deforming to the state shown in Fig. 3 (e). The curved surface formed by 2 is a part of a conical surface. The state shown in FIG. 3(C) is a state in which only the bending operation is performed on the conically curved p-material 2, and peaks 2a and troughs 2b are formed. In addition, in order to process the P month 2 into this state, a lower mold 3 having a waveform shape having the same shape as this state, and a plurality of upper molds 4 having an arc shape for applying bending force.
a, 4-b, 40., are used. The state shown in Fig. 3 (0) is the state in which the bent rear door material 2 is placed in a cylindrical jig 5, and the outer diameter of the jig 5 is the same as that of the furnace material 2 in the final state shown in Fig. 3 (0). is equal to the inner diameter of This figure 31 (
C1) From the illustrated state, point both ends of the outermost circumference to arrow A.

By aligning them along AK, a ring-shaped element 21 can be formed in the final state shown in FIG. 3(e).

1 from the state shown in Figure 3(a). The process from the state shown in A(C) to the state shown in FIG. 3(d) to the state shown in FIG. 3(e) is the bending process.
The process up to this state is called the rounding process.

The present invention relates to the first half of the folding process, and a method and apparatus that can be used in this process to produce ring-shaped elements will be described below.

Referring to FIGS. 4 and 5, 3 is a washboard-like lower layer having a waveform shape, and each upper surface of each of the peaks 3a, 3b to 3 is a conical surface, and the lower side The surface is attached to the bed 6. 4a, 4b;" 4e is an upper plate having a chevron-shaped tip and an arc shape as a whole, and it can be seen that it is provided with the same number of ridges as the link-like elements, and the curvature of each is shown in Fig. 3 (C ) are the same as the inner diameter, outer diameter, and curvature of each valley part 2b of the P month 2. These upper mold plates 4a to 4e are connected to the pneumatic cylinder 8.
The pneumatic cylinder 8 is connected to the frame plate 7 via a rod 9 and is attached to the frame plate 7. Reference numeral 10 denotes a hydraulic cylinder attached to the fixed plate 11, which moves the self-indication frame &7 up and down as a guide for the 12 kite bars. 13i
l-1: This is a pneumatic cylinder, and the Okizuki 2 is clamped between the clamper 14 attached to the tip of this cylinder and the lower mold 3, and the
) can be maintained in the conically curved state shown in ().

The operation of the embodiment configured as above will be explained. First, the plate-shaped furnace material 2 with the grooves 2a is placed on the ridge 3a on the inner diameter side of the lower die 3 using a clamper 14 having a conical slope.
4, and set it so that the Okizuki 2 forms a conically curved surface as shown in FIG. 4, and is held by a pneumatic cylinder 13. Next, when the frame plate 7 is lowered by the hydraulic cylinder 10, the pneumatic cylinder 8 attached to this frame plate 7
a,...8e descend all at once. First, the upper die plate 4a placed at the lowest position presses down the groove 2a on the innermost diameter side of the p-material 2, hits the valley of the lower die 3 and stops, as shown in Figure 5. Immediate peaks and valleys are formed in the p-material 2. By this time, the upper die plate 4b, which was placed second from the bottom, has been lowered to the position of the upper die plate 4a, which was located one step below. When the frame plate 7 is further lowered, the groove 2a which should become the next valley of the υ offing material 2 is pushed by the upper die plate 4b, and when it hits the next valley of the lower die 3, the second peak and valley are formed. It is formed on the p material 2. In this way, the frame plate 7 is lowered by the hydraulic cylinder 10 until the outermost upper die plate 4e hits the lower die 3, and the plate 2 is bent once from the inside. Figure 3 (C1
It reaches a state where it is bent into a waveform as shown in . The furnace material 2 thus bent can be easily formed into the ring-shaped element 21 shown in FIG. 3(e) through the latter rounding step.

In the above example, a pneumatic cylinder was used for the upper mold plate in order to apply a uniform pressing force to the p-material 2, but a similar effect can be obtained by using a spring. However, when using springs, care must be taken to avoid lateral wobbling.

In addition, as shown in Fig. 6, as a device for bending ring-shaped elements with different peak heights, the F-type 3 lower die peak 3
1 and a lower mold trough 32 which is slidably held on the lower mold crest, and the position of the lower mold crest 31 in the vertical direction is moved up and down by a pneumatic cylinder or an actuator such as a pulse motor. By making it possible to create a machine that can do this, there is the advantage that a wide variety of random flows can be performed with automatic setup.

Further, the hydraulic cylinder IO can be replaced with a pneumatic cylinder, and the pneumatic cylinder 13 can also be replaced with a hydraulic cylinder.

As an example of numerical performance, the method of the present invention reduces the folding time to 1.5 minutes, whereas the conventional production method using corrugated film required about 2 minutes to fold.
It was possible to reduce the time to seconds, increasing productivity by about 80 times.

As described above, the method of the present invention has the above-mentioned structure, and the ρ material is set and held in the shape of a conically curved surface in the lower die, which has the same washboard shape as the P material after folding and bending. Then, a plurality of arc-shaped upper mold plates 1 arranged along this conical curved surface are simultaneously lowered, which has the excellent effect of making it possible to bend the P material at high speed. . In addition, the flat plate material has creases in advance at the crease positions, and the upper mold plate can apply a uniform load to each crease almost simultaneously, making it possible to There is no variation in the amount of bending, and the creases are not released until the outermost bending is completed, which has many excellent effects such as being able to bend into a uniform shape. The variation in the effective p-over area of the subsequent ring-shaped elements was significantly reduced, and the roundness of the product side chain was also significantly improved.

[Brief explanation of drawings]

1 and 2 are perspective views showing the piggyback manufacturing method, and FIG. 3 is a perspective view illustrating the outline of the manufacturing method according to the present invention.
FIG. 4 is a partially sectional front view of an apparatus for carrying out the method of the present invention, FIG. 5 is a perspective view of the main parts thereof, and FIG. 6 is a sectional view showing another embodiment. 2... Plate-like p-shaped, 2a... Line 73... Lower mold, 4a
, 4b to 4e... Upper mold plate, 7... Frame plate, 8.
...Pneumatic cylinder, 9. Rondo, 10. Hydraulic cylinder, 13. Pneumatic cylinder, 14. Clamper. Figure 3 (a) (b) (C) 94-

Claims (1)

[Scope of Claims] (1) A washboard-like lower mold having arc-shaped peaks and valleys alternately parallel to each other, using a fan-shaped flat furnace material with creases provided in advance at the positions where the creases will be formed. On top of this, while holding the F5I in a conically curved shape so that the inner diameter of the F5I hits the slope of the peak on the inner diameter side of this lower mold, apply the niJ marks to the valleys of the lower mold arranged along the conical curved surface. A plurality of upper mold plates forming a conjoined arc shape are lowered all at once, and these upper mold plates direct the streaks of the furnace material from the innermost valley of the lower mold to the outermost valley of the lower mold. The above-mentioned bending is carried out by sequentially pressing the grooves, and the upper mold plate presses the furnace material until the grooves of the furnace material are pressed against the valleys of the lower mold by the upper mold plate on the outermost diameter side. A method for bending a ring-shaped element, characterized in that the ring-shaped element is maintained without being released. /QS dnl Little also has a lower mold with a lower mold and multiple upper mold plates whose tips match the valleys of the lower mold. of,
an upper mold formed by connecting a plurality of the tips of the plates to a vertically movable frame plate through an elastic suppression member so as to be arranged on a conical curved surface; and an upper mold that is moved vertically through the frame plate. and a pneumatic cylinder or a hydraulic cylinder that has a clamper at its tip that has an arcuate slope that matches the slope of the peak on the inner diameter side of the lower mold. Folding device for ring-shaped elmmen. (3) The device for folding a ring-shaped element according to claim 2, wherein the elasticity suppressing member comprises a pneumatic cylinder or a soft link member. (4) Claim 2 or 3, wherein the lower mold comprises a lower mold crest that is movable up and down, and a lower mold trough that slidably engages with the lower mold crest. A war ring-shaped element bending device.