JPH072090Y2 - Work intermediate support device in plate processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a bending device such as a tangent bender or a folding machine, or a plate material processing device such as a press machine, and more specifically, a fixing device fixed on a base. Also, the present invention relates to a plate material processing machine provided with a movable bending device that is configured to be movable toward and away from the fixed bending device so as to be adjustable in position.

(Prior Art) In the plate material processing machine described above, the movable bending device is moved to a position that fits the width of the plate material (work) to be processed, and then the work is moved to the right and left ends of the bending device. It is placed and supported on the lower plate, and both ends are pressed by the upper plate from above, and both ends are bent by the bending machine.However, since the middle part of the work has no support, the longer the material, the more centered it is. It bends downward and cannot be bent correctly at the planned bending line, and it is inevitably bent at a position outside the planned line, making it difficult to expect high-precision processing and bending in the center. However, there is a possibility that the subsequent processing will be hindered.

Therefore, until now, for convenience, a support such as a timber was carried and addressed by a worker under the central portion of the work width.

(Problems to be solved by the invention) As described above, conventionally, the support is manually input each time
In other words, every time the width of the work changes, it is brought under the central part of the width, so it goes without saying that the work is dangerous, the work efficiency is poor, and it is also a factor that hinders automation. there were.

The present invention has been devised in view of the present situation, and an object thereof is to provide a support which can be automatically set to the center (center) of the work width.

(Means for Solving the Problems) In order to achieve the above object, the work intermediate supporting device in the plate material processing machine of the present invention is a fixed bending device (5) fixedly arranged on a base (4). In the plate material processing machine, which is provided with the movable bending device (6) which is configured to be movable toward and away from the fixed bending device (5), the position of the movable bending device (6) is fixed and movable. , (6) between the folding devices (5) and (6), the intermediate portion of the work (W) carried in over the lower plate (12) is supported from below and the base (4) is supported. An intermediate receiver (7) that moves toward and away from the fixed folding device (5) is provided, and a large diameter chain is provided at each end of the entire movement stroke for adjusting the position of the movable folding device (6). The wheels (26) and (28) and the small diameter chain wheels (25) and (27) are provided to make the Chains (29) and (30) are hung between the chain wheels and between both small diameter chain wheels, and the chains (29) hung between the large diameter chain wheels are fixedly connected to the movable folding device (6). The folding device (6) is configured to rotate integrally with the approaching / separating movement of the folding device (6), and the chain (30) suspended between the small diameter chain wheels is fixedly connected to the intermediate receiver (7). The large-diameter chain wheel (26) and the small-diameter chain wheel (25) on either side of the section are integrally rotatably coupled, and the number of gears of the small-diameter chain wheels (25) and (27) is set to the large-diameter chain wheel ( 2
6) and (28) are set to half the number of gears.

Further, for longer and wider workpieces, the fixed and movable folding devices (5) and (6) are pivotally supported at their base ends by the outer wall surfaces (11A) and (11A) facing each other. Structure having work supporting devices (38), (38) including support frames (36), (36) that are forcibly oscillated up and down, and receivers (37) provided at their free ends, respectively. Is preferred.

(Operation) When the work (W) is carried into the plate material processing machine configured as described above and the bending work is performed, first, before or after carrying in the work, depending on the length or width of the work. In parallel, the relative distance between the fixed and movable folding devices (5) and (6) is set by NC control. Therefore, the movable folding device (6) slides on the base (4) in order to move toward and away from the fixed folding device (5) in order to establish a predetermined distance. The movement of the movable bending device (6) is performed by rotating the chain wheel (29) suspended between the large-diameter chain wheels (26) and (28) together to produce the large-diameter chain wheels (26) and (28). To rotate. The rotation of the large diameter chain wheels (26), (28) causes the small diameter chain wheel (25) that is integrally rotatably connected to one of the large diameter chain wheels (26), (28) to rotate. At the same time, the other chain wheel (27) paired with the small diameter chain wheel (25), and the chain (30) hung on them are rotated together. However, since the number of gears of the small diameter chain wheels (25) and (27) is set to one half of that of the large diameter chain wheels (26) and (28), this small diameter chain wheel (25), ( The amount of rotation of the chain hung on 27) is large chain wheel (26),
The rotation amount of the chain hooked on (28) becomes one half, and the intermediate receiver (7) always slides by the half rotation amount. That is, the intermediate receiver (17) moves a distance of one half of the distance between the movable folding device (6) and the fixed folding device (5), and the movable folding device (6) and the fixed folding device are moved. It is always located in the middle of the relative distance of (5) and always moves and stops. Therefore, the intermediate receiver (7) always bends the work (W) carried over the folding devices (5) and (6) downward at the center of its length and width. Support not to.

Further, the supporting devices (38), (38) provided on the both folding devices (5), (6) respectively have a central supporting portion for supporting the work (W) by the intermediate receiver (7). The bending devices (5) and (6) work to support the intermediate portions of both end portions supported by the lower plate (12) from below, and the work (W) between these support portions moves downward. Support it so that it does not bend.

(Example) An example will be described with reference to the drawings.

As shown in FIGS. 1 to 3, a carry-in conveyor (1) for carrying in a work (W), an intermediate conveyor (2), and a carry-out conveyor (3) are linearly arranged on the left side or the right side of the drawing. Stand (4)
A fixed folding device (5), which is arranged above, between the carry-in conveyor (1) and the intermediate conveyor (2), and the movable folding device between the intermediate conveyor (2) and the carry-out conveyor (3). (6) are respectively arranged, and both end portions of the work (W) transferred to the intermediate conveyor (2) by the carry-in conveyor (1) in the transfer direction are located at the lower end portions of these both folding devices (5), (6). ) And bend it.

The fixed folding device (5) is fixedly attached to the base (4), but the movable folding device (6) moves toward and away from the fixed folding device (5) to allow position adjustment. The stationary folding device (5) is moved toward and away from the fixed folding device (5) on the lower side of the intermediate conveyor (2) between the folding devices (5) and (6). Half of the distance (L)
Is provided with an intermediate receiver (support) (7) that moves toward and away from each other at a distance (1), and supports substantially the center of a workpiece (W) of various sizes, which is transferred onto the intermediate conveyor (2), from below. Prevents middle folds (a phenomenon in which the middle part bends downward).

On the front and rear frames (4A) and (4A) of the base (4) along the work (W) transfer direction, from the right end of the fixed folding device (5) to the frames (4A) and (4A). Guide member (rail) (8) over the entire area to the left end,
(8) is provided, and the intermediate receiver (7) and the movable bending device (6) are fitted into the guide members (8) and (8) with dovetail grooves (9) provided on the lower surface of each of them. The guide members (8), (8) are slidably supported in the left-right direction (so as to move toward and away from the fixed bending device) by the combined sliding members (10).

The movable folding device (6) includes an underframe (11) provided with the sliding member (10), a lower plate (12) fixed to the upper end of the underframe, and a pivot pin (13) at the right end of the lower plate. A bending plate (14) that is movably provided via a bending plate (14), and an upper plate (15) that is vertically moved by the operation of an elevating cylinder (not shown) to press and fix the work (W) to the lower plate (12). After positioning the work (W) loaded on the intermediate conveyor (2) with a stopper (not shown), lower the upper plate (15) to press and fix the work (W) to the lower plate (12), Subsequently, the bending machine (14) is moved upward with a fluid pressure cylinder (not shown) around the pivot pin (13) to perform bending work. Since the structure of the folding device itself is the same as the conventionally known structure, detailed description of the structure and operation will be omitted.

The fixed folding device (5) is the movable folding device (6).
Since they are substantially symmetrical and have substantially the same configuration, the same reference numerals are given to the components having the same functions, and the detailed description thereof will be omitted.

The intermediate receiver (7) is, as shown in FIGS. 2, 4 and 5, a pair of front and rear columnar frames (16) and a rotatable roller (17) which is an example of a receiver installed between the upper ends of both frames. ), And further, the roller (17) is rotatably supported on the upper end of the piston rod (18) and is pushed up and down from the upper end of the columnar frame (16) to substantially the work transfer surface of the intermediate conveyor (2). It consists of a cylinder (19). Incidentally, (16A) is a guide plate for guiding the vertical movement of the roller (17) by means of the groove (16B).

Next, the movable folding device (6) is moved toward and away from the fixed folding device (5), and the intermediate receiver (7) is halved of this approach and separation distance of the movable folding device (6). A device for moving the fixed folding device (5) toward and away from the fixed bending device (5) will be described in detail.

The movable folding device (6) has a spiral shaft (2
(0) is forcibly moved left and right (approaching and moving away), specifically, the axis is along the work transfer direction, and both ends are the front and rear frames (4A), (4A) of the base (4). )
The cross beam (4B) installed over the space, the bearings (21) on the (4B), and the spiral shaft (2) rotatably supported by (21).
The engaging piece (22) attached to the lower surface of the underframe (11) is screwed to the 0), and the spiral shaft (20) is rotated forward and backward by the servo motor (M) to move the movable bending device (6). Move left and right.

On the other hand, above the right end of the base (4), there is a horizontal drive shaft (23) with its axis oriented in the front-rear direction, and its front-rear ends are bearings (24A) on the front-rear frames (4A), (4A), respectively. ), (24) are rotatably supported by a shaft, and a pair of small-diameter chain wheels (25), (25) of the same diameter are provided near the front and rear ends of the bearing (24). A large-diameter chain wheel (26) having twice the number of gears as those of these small-diameter chain wheels is mounted on the shaft so as to rotate integrally with the shaft (23).

Further, near the right end of the fixed bending device (5), the chain wheels (25) of the small diameter (25) and the driven chain wheel of the same diameter (same number of gears) as the front and rear frames (4A) and (4A), respectively. (27), (27), and the same diameter (same number of gears) as the large diameter chain wheel (26) in the front-rear intermediate portion of both.
The driven large diameter chain wheel (28) is rotatably mounted so that the rotation axis is parallel to the drive shaft (23).
An unillustrated tension mechanism is provided so that each of them is elastically pressed and urged toward the upper side (fixed bending device side) in the work transfer direction.

Of these three pairs of chain wheels, one pair facing each other in the work transfer direction, one end of the large diameter chain wheel (26), (28) is the right end of the movable bending device (6). And is wound around the chain wheel (26) on the drive shaft (23) side, reaches the driven side chain wheel (28), and is wound around the chain wheel (28) on the driven side. The drive chain (29) fixed at the left end of 6) is stretched, and the chain (29) is moved forward and backward by the lateral movement of the movable bending device (6) accompanying the forward and reverse rotation of the spiral shaft (20). It is rotated.

Also, small diameter chain wheels (25), (25), (27),
With respect to (27), one ends are fixed to the front and rear columnar frames (16) and (16) on the right end side of the intermediate receiver (7), respectively, and the chain wheel (25) on the drive shaft (23) side. ,(twenty five)
After being wound around, the driven chain wheel (27),
The driven chain (3) wound up around (27) and further secured to the left ends of the columnar frames (16) and (16) at the other end.
0) and (30) are stretched, and the forward and reverse rotations of the drive shaft (23) associated with the left-right movement of the movable bending device (6) cause the front and rear two chains (30) and (30) to move. Both are rotated normally and reversely.

Therefore, when the spiral shaft (20) is normally or reversely rotated by actuating the servo motor (M), the movable bending device (6) causes the guide member (8) via the engaging piece (22). ) And slide to the left or right, the left or right movement of the movable folding device (6) pulls the drive chain (29) left or right to rotate it. The diameter of the chain wheel (26) is rotated normally and reversely to rotate the drive shaft (23) normally and reversely. The small diameter chain wheel (25) is integrally rotated by the forward and reverse rotations of the drive shaft (23), and the driven chain (30) is rotated in the same direction as the rotation direction of the drive chain (29), so that the columnar frame ( 16) and (16) are movable folding devices (6)
It is slid by being guided by the guide member (8) in the same direction as the sliding direction. And the number of teeth of the small diameter chain wheels (25), (27) ..
6) and (28) are half of the driven chain (3
The rotation amount of (0) is half the rotation amount of the drive chain (29).
As a result, the sliding distance of the columnar frames (16) and (16) can always be set to a distance (1) that is half the sliding distance (L) of the movable folding device (6). Fixtures (17)
Can be set to one half of the moving distance of the movable folding device (6) from the fixed folding device (5), and the receiving member (17) can be used regardless of the sliding distance of the movable folding device (6).
Can always be automatically positioned between the folding devices (5) and (6).

The intermediate conveyor (2) is composed of a plurality of belts (31) at predetermined intervals in the front-rear direction and a pulley group for supporting and guiding the belts. The pulley group is a fixed folding device ( 5) and respective underframes (1) of the movable folding device (6)
Movable pulleys (32), etc., which are installed on the outer wall surfaces (11A) facing each other of (1) so that the upper surface of the belt (31) is at the same height level as the lower board (12). A pulley (33) provided at the lower end portion of the outer wall surface of the folding device (6) and the pulley (32) of the fixed folding device (5) inside the base (4) toward the right end thereof. It is composed of a pulley (34) fixedly provided at a position corresponding to the lower side, and as shown in the drawing across these pulley groups.
The belt (31) is hung. It goes without saying that the pulleys (32) and (33) provided on both upper and lower ends of the outer wall surface (11A) of the movable folding device (6) move together with the folding device (6). Absent.

Therefore, in the illustrated example, the receiving tool (17) of the intermediate receiver (7) does not directly support the work (W), but the receiving devices (5) and (6) of the intermediate conveyor (2). Lower board (1
2) The work (W) is supported by supporting the feed action part (2A) between them from below.

In addition, each chain (29), (30) is endless, and a part of each chain is movable folding device (6), columnar frame (16), (1).
It can also be fixedly connected to 6).

Next, FIG. 6 shows an improved structure of the above-mentioned embodiment, in particular, in the case where the work is long or wide, it is possible to effectively prevent the center fold, specifically, fixing, By the fluid pressure cylinder (35), the proximal ends of the movable folding devices (5) and (6) are pivotally supported near the upper ends of the outer wall surfaces (11A) and (11A) facing each other and facing each other. A support frame (36) that can swing up and down is provided, and a receiving roller (37) that contacts the lower surface of each of the belts (31) with the free end of the support frame (36) to support it is rotated. It is provided with supporting devices (38), (38) at both ends of a work which are freely held. The upper limit of the support frame (36) is that the upper surface of the belt is lower when the belt (31) is supported by the receiving rollers (37).
The height is set to the same horizontal level as 2), and the lowering limit is set to a posture position that is substantially along each outer wall surface (11A).

Therefore, the work (W) is supported in the middle by the receiving tool (17), and at the vicinity of both ends, that is, a part supported by the lower plate (12) of each of the folding devices (5) and (6). The intermediate part of the receiving part (17) and the supporting part is supported by the receiving rollers (37), respectively, and the light center bending phenomenon at the intermediate part between the receiving part (17) and each lower plate (12) is also prevented well. it can.

Although a plurality of receiving rollers (37) are provided corresponding to the belts (31), a single roller having an axial length corresponding to the entire width of the intermediate conveyor (2) may be used. good.

(Effects of the Invention) The present invention configured as described above has the following effects.

The workpiece (W) carried over the both folding devices (5) and (6) is always held at the center of its width by the intermediate receiver (7) provided between the both folding devices (5) and (6). Needless to say, since the support is supported, it is possible to prevent the downward bending that tends to occur in the central portion of the work (W), but this intermediate receiver (7) is moved by the movement of the movable bending device (6). Since it automatically moves by half the moving distance, it supports the work (W) in a well-balanced manner, there is no danger as in the past, work efficiency is greatly improved, and automation and labor saving are achieved. It contributes greatly, and also enables highly accurate bending, and it does not hinder the subsequent processing, and efficient processing work can be performed. And, since the moving device of the intermediate receiver (7) is composed of a chain and a chain wheel, the structure is simple and it can be provided at a low price.
Moreover, since the flexibility is great, there is an advantage that the mounting work is simple and can be applied to the existing plate processing machine relatively easily.

Further, the folding device (5), (6) is provided with an intermediate receiver (7).
By providing support devices (38) and (38) for supporting the intermediate part between the central support part supported by the and the both ends supported by the lower plate (12) of the respective bending device, these intermediate parts are provided. With the good prevention of the tendency of the part to bend downwards,
Bending can be performed with higher accuracy. Further, the supporting devices (38), (38) for this work are the supporting frames (36), (36).
By swinging up and down, the structure can be made simple and compact, and the receiving members (37) can easily be brought closer to the intermediate receiving member (7) side so as to project, so that the intermediate portion can be made more stable. Can support.

[Brief description of drawings]

1 is a front view showing the entire apparatus, FIG. 2 is a plan view thereof,
FIG. 3 is a partially cutaway right side view, FIG. 4 is a front view showing an essential part of the intermediate receiver, FIG. 5 is a right side view thereof, and FIG. 6 is a front view showing another embodiment. Explanation of symbols (4) …… base, (5) …… fixed bending device, (6)…
… Movable folding device, (7) …… Intermediate tray, (8) …… Guide member, (11A) …… Outer wall surface, (12) …… Lower board, (1
4) …… Bending machine, (15) …… Upper board, (16) …… Column frame,
(17) …… Receptor, (20) …… Spiral shaft, (22) …… Engagement piece, (23) Drive shaft, (25) …… Small diameter chain wheel,
(26) …… Large chain wheel, (27) …… Small chain wheel, (28) …… Large chain wheel, (3
6) …… Support frame, (37) …… Receiving roller, (38) …… Support device, (L) …… Distance of moving folding device
(1) …… The distance of approaching and separating of the intermediate receiver, (W) …… Work.

Claims (2)

[Scope of utility model registration request] 1. A fixed bending device (5) fixedly arranged on a base (4) and a movable bending device which is configured to be movable toward and away from the fixed bending device (5) so as to be adjustable in position. In a plate material processing machine provided with respective devices (6), between the fixed and movable double folding devices (5), (6), on the lower plate (12) of the double folding devices (5), (6). The intermediate part (7) that supports the intermediate part of the work (W) carried in over from below and moves on the base (4) so as to move toward and away from the fixed bending device (5) is provided. Large-diameter chain wheels (26) and (28) and small-diameter chain wheels (25) and (27) are provided at both ends of the entire movement stroke for adjusting the position of the folding device (6). Chains (29) and (30) are hung between the small diameter chain wheels and between the small diameter chain wheels to increase the large diameter chain wheel. The chain (29) suspended between the chain wheels is fixedly connected to the movable bending device (6) so that the chain (29) is integrally rotated by the approaching and separating movement of the bending device (6), and a small diameter chain is also provided. The chain (30) suspended between the wheels is fixedly connected to the intermediate receiver (7) so that the large diameter chain wheel (26) and the small diameter chain wheel (25) on either side of the both ends can rotate together. In addition to connecting the small chain wheel (25) and (27) to the large chain wheel (2
6), (28) The number of gears is set to one-half, the work intermediate support device in the plate material processing machine. 2. The fixed and movable folding devices (5), (6) are pivotally supported at their base ends by outer wall surfaces (11A), (11A) facing each other, and are forcibly moved up and down. Support frame (36), (3
6. A work intermediate support device in a plate material processing machine according to claim 6, further comprising work support devices (38), (38) each provided with 6) and a receiving member (37) provided at its free end.