JPS5816735A - Continuous bending mechanism - Google Patents

Abstract

PURPOSE:To reduce a working time, and to obtain an uniform quality, by performing continuous bend-working of a V-type and an inverted V-type by cranks alternately connect to a reverse table and its rotary shaft. CONSTITUTION:A titled mechanism consists of a means for feeding a material 1 to a reverse table 14, a means for detecting the feed rate of this material and controlling and operation of the feeding means, a pair of cranks 15, 15a which pinch-hold the material 1 from the left and right, and can be moved freely at right angles with the feeding direction of the material 1, and also a means for connecting the rotary shaft of the table 14 alternately to said cranks 15, 15a. Said material feeding means is formed by a tension mechanism part 11 for giving tension to the material 1, a feed mechanism part 12 for feeding out the mateial 1 to a bending mechanism part, and a guide mechanism part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bending mechanism for continuously bending a long coiled material wound around a drum into a round shape with a V-shape and an inverted V-shape as one cycle.

Conventionally, a long fill-shaped material was bent into a V-shape and an inverted V-shape as a cycle, by pressing it against a round bar with strong force manually, or by using a press at one's own expense.
, a method of directly welding a semicircular K11l girder part and material, and a method of using a bending machine combined with a numerical control device.

However, the method of bending by pressing against a round bar is limited to specific dimensions and shapes, and the method of using a 0-curve shape, which has large bending n degrees or dimensional fluctuations and requires time and effort, is limited to specific dimensions and shapes. The method is to weld parts bent into a semicircular shape and materials directly.
It requires skill, lacks reliability, and requires processing time. Furthermore, the bending machine combined with a numerical control device has drawbacks such as a double-feed structure and high equipment costs.

The present invention has been made in consideration of the above points, and its purpose is to:
To provide a bending mechanism capable of continuous bending of high quality V-shape and inverted V-shape in a short time by simple mechanical operation.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

The continuous bending mode and structure of the present invention are as follows: %jFI 1 As shown in Figure 1, the material feeding section for sequentially feeding out the long material 1 wound into a coil shape and the straight line material fed out from the material feeding section are It consists of a bending part for bending into a letter shape. That is, the material supply section includes a tensile mechanism section 11 that applies tension to the material l, a feeding mechanism section 12 that includes a feeding jaw 2 that sends out the material to the bending mechanism section, and a guide mechanism section 13. On the other hand, the bending mechanism section has an inversion table 14 and a curved shaft 15.15a provided at the center thereof.
Nine straight pieces of material 1 supplied from the guide mechanism 13 are inserted within a distance of 5.15 m. and,
The curved shafts 15.15m are disposed so as to be movable at right angles to the supply direction of the material I, and both curved shafts 15.15m are alternately connected to the rotating shaft of the reversing Cheetzle 140. This reversing tape k14 is equipped with various positioning switches (fy). A limit switch 16 is provided for regulating the amount of protrusion of the material 1 from the @. This limiter, tosui, 116 is connected to the sending mechanism section 12 and is connected to the sending mechanism section 1.
2 operates based on commands from Tonorin, Tonui, and Chi 16. 0th order, limit switch 1 f 9.17m, inversion table 1゛ 40 rotation axis 2 is connected to one curved axis ls1 In some cases, the inversion table 14 may be rotated by a predetermined angle and returned to its original state. ! It is a round positioning switch that allows the user to return to the position of the switch.
The air cylinders 18 are connected alternately to the rotating shaft 2 of the reversing table 14, and an air cylinder 18 is provided on the side of the round reversing table 14 at right angles to the supply direction of the material 1. One shaft 1s using this air cylinder/18.

In order to control the movement position of 1 sm, the curved axis Is, 15 m is moved left and right 61 J (because the cut switch 19.19 m is provided, and also due to the operation of the air cylinder 18), and the H@ axis of the reversing table 14 is moved. When the other curved shaft 15 is connected to the curved shaft 1
□Positioning limit for rotating at a constant angle and restoring to the original state with s as the center.
o Hatake looks a little strange.

The continuous bending mechanism of the present invention has the above-mentioned configuration, and its operation will be explained below with reference to FIGS. 1 to 10.

In the first step, as shown in Fig. 1, the coil-shaped material l is rolled up in advance around a roller or the like.

When the material is inserted between the left and right curved shafts 15.15@0 through the transparent mechanism 12% guide mechanism 13 and the feeding mechanism 12 is operated in this state, the material will be transferred to the reversing table 14.
When the material 1 that is sent upwards is fed a certain length, the tip of the material comes into contact with the tJ, tosui, and chi 16, and this material (
The feed mechanism section 12 stops in response to a command from the switch 16.

In the second step, as shown in FIG. 2, the material I is bent to the right. That is, in this state II, the rotation axis of the reversing table 140 has -axis 1! Since it is connected to the Sa side, when the reversing table 14 rotates around the curved axis 15m, the -axis 1s moves around the central curved axis 15m, and this moving curved axis 15 causes the material 1Fi -axis 15 to move around the central curved axis 15m.
Press the front w#C of a (5) and bend it into the same shape as the outside shape.

When the reversing table 14 rotates by a predetermined angle, the limit switch 17 detects the rotation angle and reverses the direction of rotation of the reversing table. In this case, since material l always has springback, the bending angle is 180'.
In this case, the rotation angle of the inversion table 140 is 18
It is necessary to set it to 00 or more.

The third step is a return step of the turning and reversing table 14 shown in FIG. In the fourth step, as shown in FIG. 4, the feeding mechanism section 12 is operated, thereby feeding the material 1.

In this case, the feeding dimension of the material 1 is controlled by the limit switch 16 in the same manner as in the IIIJl process. After the feeding of the material 1 whose tip is bent in this way is completed, , as shown in step (6) of the fifth step in Fig.
move it to That is, by using the air cylinder/18C) driving force provided on the side of the reversing tape k14, the curved axis 1
5.15m perpendicular to the supply direction of the material 10 and switch the connection to the rotating shaft 2 to 0. In this case, the curved shaft 1! S,
The moving position of 15ae can be determined by limit switches 19e19m.

In the sixth step, as shown in FIG.
c Rotate the masonry table, that is, the reversing table 14
When rotates around the curved axis 1s, the curved axis 15m moves around the curved axis 1S, and the material 1 is pressed against the curved axis 1s by the curved axis 1s and bent into an inverted V shape. is rotated by a predetermined angle, and material 1
01Frl) When the bending is completed, the inversion table 14
touches Dan, Tosui, Ji 20aK111, and the direction of rotation is reversed.

In the seventh step, the reversing tape k14 returns to the fifth knee position t, which is the time to start folding the inverted V-shape. In this case, the return position of the reversing table 14 is determined by a limit switch 20 provided on the side of the table 14, as shown in FIG.

After the bending cycle consisting of the V-shape and the inverted V-shape is completed in this way, as shown in FIG.
5a@, and the material 1 is sent out in the same manner as the first step of the 1st vIJ and enters the bending step of the second cycle.

Hereafter, this cycle is repeated) to bend the material 1 into a V-shape and an inverted V-shape. Figure 9 shows the state after 2.5 cycles of bending. FIG. 10 shows the completed bending for four cycles.

As described above, according to the present invention, the material can be
It becomes possible to perform the bending process to form a V-shape and an inverted V-shape successively. In particular, in the present invention, by appropriately changing the length of the material to be fed in the first material and the fifth step, products with any folding width can be easily manufactured, which is different from conventional methods. Compared to methods using press-based folding means or welding, folded products of various shapes can be produced more freely. Therefore, according to the present invention, the radiator and steam piping expansion joints of cold storage, cooling parts of transformers, etc. t) 8KW pipes.

The advantage is that anyone can easily perform continuous bending using various materials such as rods, wires, and plates.

Furthermore, compared to bending by welding or pressing, the working time is extremely shortened, and the product has the effect of being of uniform quality.

[Brief explanation of the drawing]

wi1 figure ~ @10Il! El is a plan view of the bending mechanism of the present invention, particularly showing the operation sequence of the bending process. l・,・Material, 2-・Curved rotation axis (mark), 11-Teshishi■
Invert mechanism section, 12-...feed) mechanism section, 13-f side mechanism section, 14 ``'' Reversal? -2x, Ig-・curved axis, 1sa-(
9) Curved axis, 16...Limit switch, 17...Limit switch, Te, 17a...Limit switch, 1B...
・Air cylinder, 19...Limit switch, 1
9a10. Limit switch, 20...Subbutton switch 120a...Limit switch. (lO)

Claims (1)

[Claims] A means for supplying material to the reversing table, a means for detecting the amount of supplied material and controlling the operation of the supply means, and a pair of curved shafts that clamp the supplied material from left and right, and furthermore, On the other hand, the rotation axis of the reversing table is alternately 1
1! The difference is that a rounding means is provided to
! I! Bending mechanism.