JPH0890087A - Product carrying-out device in bending roll - Google Patents

Abstract

PURPOSE: To prevent the face of a product from generating projecting and recessing parts caused by pressing or defects caused on slip scratches, etc., by releasing the product to the state being able to be carried out by elevating a top roll and inclining an inclining bearing to support one end of the roll with pivot. CONSTITUTION: A lift stand 4 mounted on a lower side between both bottom rolls 2 is elevated, an upper face of a moving stand 5 mounted on the upper face of the lift stand is reached to the outer circumferential face of a product, and the self-weight of the product mounted on the bottom rolls 2 is held. Because the length of the moving stand 5 is almost same to the total length of the roll, the movement from the bottom roll 2 to the moving stand 5 is advanced uniformly over the total length of the product, the external force applying on the product itself is dispersed to the wide pressure receiving face and reduced to a little amount. After the delivery is finished, only the moving stand 5 is moved horizontally to the axial direction on the lift stand 4, and it is advanced beyond the inclining bearing 31 to the outside of the machine as the product is mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a metal plate such as a steel plate formed into a cylindrical shape by a sandwiching action between two bottom rolls axially supported in parallel and a top roll axially supported just above the intermediate rolls. The present invention relates to a device for carrying out a bending roll product to be molded into.

[0002]

2. Description of the Related Art The basic mode of bending by a bending roll is to insert a metal plate between a bottom roll which is axially supported in parallel and a top roll which is axially supported in the upper part to lower the top roll, The metal plate is bent and weighted at an intermediate position to cause local plastic deformation, and then the top roll is lifted. Next, repeat the procedure of moving the metal plate in the direction perpendicular to the roll axis so that the flat surface adjacent to this deformation surface is located directly below the top roll, and then descending the top roll again to reduce the pressure. It is to process a flat plate into a cylindrical shape. At the end of processing, the cylindrical product is wrapped around the outer circumference of the top roll,
In order to carry out the product, one end of the top roll is removed from the bearing and raised obliquely, or only the bearing at one end of the top roll is tilted laterally to open the end of the roll.

When one end of the top roll is opened, the product can be carried out, but many methods have been adopted as the carrying-out method. The simplest method is to lift both ends of the product with a clen, move it laterally, and then hesitate between the bottom roll and the top roll to get out of the roll, but it will occupy the cren during that time and it will hinder other work. In addition, there was not a little concern that the product could be damaged by accidentally colliding the crane operation with a member such as a tilt bearing. For this reason, many improvements have been proposed for the product unloading device, and the accumulated conventional technology is being constructed.

As an example of the most commonly used technique, as shown in FIG. 6, a lift table is provided between the bottom rolls 2a so as to be lifted up and down with a driving force when the molding of the product is completed. This is a method in which a large number of rotating rolls 101 are axially supported on both side surfaces of 4a, and the product is rolled and carried out over the space in which the tilting bearing 31a is tilted.

A large number of conventional techniques in which various improvements have been added to the basic conventional technique are found. Among them, the conventional technique disclosed in Japanese Examined Patent Publication No. 40-22566 is almost in the middle between two bottom rolls. A guide rail having the same length as the roll is laid, the endless chain is wound around the chain sprockets provided at both ends of the guide rail, and the endless chain is rotated in conjunction with the rise of the top roll to tilt the bearing. We have proposed a structure in which the product is slid out along the guide rail over the above.

In Japanese Utility Model Publication No. 43-20130, a plurality of cylinder devices 102 are arranged in parallel along the axial direction between both bottom rolls 2b as shown in FIG. 7, and the cylinders are interlocked with a top roll 3b which rises after completion of molding. Is operated to support the product W, the cart 103 with a roll conveyor is inserted from the right hand of the figure, the cylinder is contracted, and the product is transferred onto the roll of the cart to carry out the product.

In Japanese Patent Laid-Open No. 5-317980, a roller conveyor for carrying out is axially arranged between both bottom rolls, and it is located below during normal molding work, but tilted bearings are carried out when carrying out the product after completion of molding. In response to the operation, the roller conveyor moves up and the product is lifted from the bottom roll and rolled horizontally to escape from between the rolls. The prior art of Japanese Utility Model Laid-Open No. 55-11206 also has the same concept, and proposes an elevating type in-machine unloader having several rotary drive rolls for pushing up the molded steel pipe between the bottom rolls.

In the prior art disclosed in Japanese Utility Model Publication No. 48-31944, as shown in FIG. 8, guide rails 104 are arranged in parallel on both sides of the bottom roll 2c, and the guide rails are pressed against one end surface of the product W. It is a mechanism that drives the push plate 105 to push the product out of the machine over the tilt bearing. In addition, inclined guide surfaces are formed on both sides of the base that supports the product, and slide plates that slide along the surfaces toward the center of the machine base are provided.
Japanese Patent Publication No. Sho 49-1 provided with a carry-out roll for supporting a part of the peripheral surface of the product on the base and moving it in the longitudinal direction above the sliding plate.
Many prior arts such as the 9998 publication have been published.

[0009]

What is common to many prior arts is that after the molding of the product is completed, the top roll, which has pressed the metal plate in the axial direction, is vertically lifted to release the pressing action,
One of the bearings supporting the top roll is tilted to open the end face of the roll, and the rolling roll conveyor and pedestal are raised to support the weight of the product and move in the opened axial direction. . In this case, the moving means for moving the product from between the rolls and escaping to the outside of the device occupy the main body of the improved technology, but naturally, the product that has escaped from the inside of the bending roll is received and further transferred to a predetermined position. It goes without saying that a jig is required. Usually, a trolley with rolling rolls arranged at the same level as the horizontal movement of the product is provided in the roll axis extension direction outside the machine, and the method of receiving and transferring the products that slide sideways is often adopted.

However, in this system, the tilted portion of one of the bearings of the bending roll remains hollow, so that the passage corresponding to the bearing portion is provided between the conveyor inside the machine and the carriage conveyor outside the machine. There is no choice but to break. If the length of the product is large, it is possible to overcome the disconnection by moving the center of gravity and transfer it to the trolley outside the machine. Since the department loses its balance due to its own weight and tilts immediately, delivery is impossible.

In order to solve this problem, a method of pushing out a product along a guide rail extending outside the machine by sewing a gap between tilting bearings (Japanese Utility Model Publication No. 48-31944, Japanese Patent Publication No. 4).
No. 0-22566), the product is certainly pushed out of the machine by being pressed by an endless chain or a push plate, but the product moves by rubbing the surface of the bottom roll that supports its own weight. It cannot be denied that there are many cases in which the surface of the roll and the surface of the roll are easily scratched, which adversely affects the appearance.

Further, in general, when the molding of the product is completed, it is indispensable to adopt a system in which the cylinder, the roller conveyor, etc. are lifted from the middle of the bottom roll to lift the product and roll in the posture in the axial direction. The pressing force of the member that comes into point contact with the product is applied to the action point on the outer periphery of the product, and the load more than its own weight is concentrated on the multiple contacts. It is not without fear that such unbalanced stress will further distort the product after molding. In particular, so-called decorative sheet products, non-ferrous metal products, and other soft material cylinders that emphasize appearance are liable to be slightly deformed or uneven in appearance, and even such slight unevenness loses commercial value and is rejected. It is not rare to be judged as a product. The same applies to the case of rolling in the machine from the pushed-up position in the axial direction.

All of these problems can be interpreted as being caused by applying an uneven external force to the product itself when the molded product is carried out. SUMMARY OF THE INVENTION In order to solve the problems described above, an object of the present invention is to provide a product unloading device that unloads a molded product itself from the inside of the bending roll to the outside of the device without applying an external force.

[0014]

A bending roll product unloading apparatus according to the present invention is a cylinder formed by a sandwiching action between a pair of a bottom roll 2 and a top roll 3 which are pivotally supported on a pedestal 1. The basic product W is opened to the unloadable state by the ascending of the top roll 3 and the tilting bearing 31 that pivotally supports one end of the product W. By mounting a movable table 5 which is equipped with a lift table 4 to be driven, is movably driven on the lift table 4 in the axial direction of the roll, and has a length extending over substantially the entire length of the roll. Solved the problem.

In this construction, the upper surface of the movable table 5 has a receiving surface 51 having two symmetrically sloping surfaces whose cross section descends from the side ends toward the center, and a vertical receiving surface with the receiving surface 51 attached to the upper surface. It consists of a pedestal 53 with two legs 52 hung vertically,
A main body 41 having a U-shaped cross section of the lifting table 4 pivotally supports a large number of rolls 42 on both side surfaces, and the rolls 42 are fitted in long grooves 54 formed on both side surfaces of the leg portion 52 fitted in the main body 41. Is a preferred embodiment.

Further, in addition to the above structure, the receiving surface 51 of the moving table 5 is made of a material having a hardness lower than that of the cylindrical product W such as non-ferrous metal such as aluminum, natural or artificial rubber, synthetic resin. It is suitable for some types of products.

On the other hand, the moving device 6 of the moving table 5 is provided with a ball male screw 61 axially penetrating the hollow portion of the lifting table 4 having a U-shaped cross section and a drive motor 62 at one end thereof. Is a preferred embodiment having a ball female screw 63 that meshes with the ball male screw 61.

There are other preferable modes for the moving device 6 of the moving table 5, for example, both ends of the chain 64 are locked near both ends of the moving table 5, and chain wheels 65A and 65B are provided near both ends of the lifting table 4. It is provided with a driving means for the chain wheel, or a wire rope 66 replaced with the chain 64 and cylinder wheels 67A and 67B replaced with the chain wheel 65 are provided respectively in front of the locking position of the wire rope 66. The biasing spring 68 may be interposed, and various moving members and their driving sources can be combined.

[0019]

[Function] After the metal plate is formed into a predetermined cylindrical product by the sandwiching action that acts between the bottom roll and the top roll, the top roll rises upward while keeping the product inside and When the tilting bearing, which supports one of the top rolls, tilts at the same time, the one end of the roll is in a state of air fishing, and the passage for delivering the product is opened. Here, the lift table provided below both bottom rolls starts to rise, the upper surface of the moving table placed on the upper surface reaches the outer peripheral surface of the product, and the product placed on the bottom roll Bears its own weight. Since the length of the moving table is almost the same as the total length of the roll, the transfer from the bottom roll to the moving table is promoted evenly over the entire length of the product, and the external force exerted on the product itself distributes its own weight over a wide pressure receiving surface. It is reduced to a small amount. When the delivery is completed, only the movable table moves horizontally in the axial direction on the lift table, and goes over the tilt bearing to move the product outside the machine. During this time, there is no external force acting on the surface of the product itself, so there is no chance of impairing the appearance, smooth and efficient delivery of the product to the outside of the bending roll is completed, and if necessary,
It is transferred to the next process.

[0020]

1 is a perspective view showing an embodiment of the present invention.
In the figure, a pair of bottom rolls 2A and 2B are mounted in parallel on the gantry 1 and both ends thereof are axially supported by bearings 21, but a drive device for the rolls connected to the other bearing is omitted. A top roll 3 is rotatably supported directly above the middle of the bottom roll 2, and one end of the top roll 3 is supported by a tilt bearing 3
It is pivotally supported by 1. This is the basic structure of the bending roll.

An elevating table 4 is attached to a frame between the bottom rolls 2 so as to be vertically movable. In this embodiment, the roll has a length substantially extending over the entire length and has a U-shaped cross section, but the shape is not particularly limited. It is sufficient to apply any known technique to the lifting mechanism of the lifting table, but here, the rocking levers 43A and 43B are provided at both ends of the lower bottom surface of the lifting table.
The operation of the hydraulic cylinder 44 induces the up-and-down action of the up-and-down table 4 through the movement of the rocking levers 45A and 45B and the transmission member of the connecting rod 46. This lifting mechanism is of course the same even if many other known techniques are applied, and even if 2 to 4 sets of hydraulic cylinders are simultaneously operated on the mount to move the lift up and down while maintaining the horizontal position. Of course, the drive of the electric motor may be converted into vertical movement by meshing of gear rotation, and is not particularly limited.

In FIG. 2, after the metal plate has been formed and the cylindrical product W has been completed, the top roll 3 is lifted and separated from the product as the first step of carrying out the product, and a tilt bearing (not shown) is provided at one end. ) Is tilted to open a passage for carrying out products, showing a sectional view. As shown in the figure, the lifting table 4 having a U-shaped cross section rises, the top surface of the moving table 5 placed on the table 4 reaches the outer peripheral surface of the product W, and the whole surface is pushed up from the surface of the bottom roll. It is in a separated state. The top surface of the movable table 5 is composed of a receiving surface 51 symmetrically having a gradient descending from the side end toward the center of the cross section. For non-ferrous materials, cosmetic materials, etc. where the appearance of the product is particularly important, aluminum is used. When formed of a material having a hardness lower than that of the product, such as a non-ferrous soft metal material, natural or artificial rubber, synthetic resin material, etc., there is no fear of the product being damaged at the time of shipment, and good results may be obtained.

In the lift base, the leg portions 52 of the receiving base 53 having the receiving surface attached thereto are fitted in both side surfaces of the lift base 4 having a U-shaped cross section, and are raised and lowered into the long grooves 54 formed in the side surfaces of the leg portions 52. It is fitted with a plurality of rotating rolls 42 arranged in the axial direction on the side surface of the table. With this configuration, the resistance when the moving table moves on the lifting table becomes rolling frictional resistance, so that there is an advantage that a driving source having a relatively small capacity is sufficient even for a large product having a considerably large weight.

The moving device 6 required for moving the moving table is not particularly limited, and various known techniques can be applied. In the example of FIGS. 1 and 2, a ball male screw 61 is axially penetrated through the hollow portion of the lifting table 4 having a U-shaped cross section, and a drive motor 62 is connected to this screw end, while one end of the moving table 5 is connected. As shown in FIG. 3, a leg 55 having a ball female screw 63 that meshes with the ball male screw 61 is vertically provided. The operation of the drive motor 62 moves the movable table 5 integrated with the leg 64 in the horizontal direction through the meshing screws. This action is shown in FIG.
(B), and the moving distance S is the stroke of this device.

Another example of the moving device for the moving table is shown in FIG.
As shown in the figure, the both ends of the chain 64 are locked near the both ends of the moving base 5, and the chain wheels 65A, 6
5B may be pivotally supported and connected to the drive motor 69 of the chain wheel to move the moving base by winding and unwinding the chain. As shown in FIG. 5, the wire rope 66 is replaced with the chain 64 and the chain wheel. It is also possible to provide cylindrical wheels 67A and 67B, which are replaced by 65, and to urge a pulling force to the wire rope at all times by interposing a biasing spring 68 in front of the locking position of the wire rope 66. In addition, when the moving distance is long, the gear may be rotated by the drive motor to move the moving table having the rack that meshes with the gear on the bottom surface.
When the moving distance is short, the moving table may be moved forward and backward by the expansion and contraction operation of the hydraulic cylinder.

[0026]

As described above, according to the present invention, the moving table on which the product is placed is moved without moving the molded product itself. No defects appear. In addition, since the moving table, which has the same length as the roll, moves horizontally out of the machine, it can be sufficiently bridged even if there is an abortion of the carry-out path due to the tilting of the tilting bearing, and it has a relatively short length. If the product is placed on the table, it can be easily carried out regardless of gravity balance. Moreover, the efficiency of the product unloading device itself is extremely excellent, there is no waiting state due to the occupation of Clen, the operation of the device is easy, and the structure is much simpler than other conventional techniques, and there is less risk of failure. Therefore, there are many advantages such as an advantage in maintenance.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a partial vertical sectional front view of the same embodiment.

3 (A) and 3 (B) are partial front views showing the action of the movable table.

4 (A) and 4 (B) are partial front views showing the operation of another embodiment of the movable table.

5 (A) and 5 (B) are partial front views showing the operation of another embodiment of the movable table.

FIG. 6 is a perspective view showing a conventional technique.

FIG. 7 is a front view showing another conventional technique.

FIG. 8 is a front view showing still another conventional technique.

[Explanation of symbols]

 1 Stand 2 Bottom Roll 3 Top Roll 4 Lifting Table 5 Moving Stand 6 Moving Device 31 Tilt Bearing 41 Body 42 Rotating Roll 43 Swing Lever 51 Receiving Surface 52 Leg 53 Receiving Stand 54 Long Groove 61 Ball Male Screw 62 Drive Motor 63 Ball Female Screw 64 Chain 65 Chain wheel 66 Wire rope 67 Cylindrical wheel 68 Bias spring W Product

Claims (6)

[Claims] 1. A cylindrical product W formed by a sandwiching action between a pair of bottom rolls 2 and a top roll 3 which are axially supported on a pedestal 1, and a top roll 3 is raised and one end thereof is pivoted. A bending roll product unloading device that is opened to a unloadable state by tilting a tilting bearing 31 that is supported includes a lift table 4 that is driven to move up and down onto an intermediate stand between a pair of bottom rolls 2. A product delivering device for a bending roll, characterized in that a moving table 5 having a length extending over substantially the entire length of the roll, which is movably driven in the axial direction of the roll, is placed thereon. 2. The receiving surface 51 according to claim 1, wherein the upper surface of the movable table 5 symmetrically has two inclined surfaces whose cross section descends from the side end toward the center, and the receiving surface 51 is attached to the upper surface. Further, it comprises a pedestal 53 in which two legs 52 are vertically provided, and a main body 41 having a U-shaped cross section of the lifting table 4 axially supports a large number of rotating rolls 42 arranged in a row on both side surfaces. Is a device for unloading a bending roll, characterized in that it is internally fitted into long grooves 54 formed on both side surfaces of the leg portion 52 fitted in the main body 41. 3. The receiving surface 51 of the movable table 5 according to claim 2, which is formed of a material having a hardness lower than that of the cylindrical product W such as non-ferrous metal such as aluminum, natural or artificial rubber, or synthetic resin. The product unloading device for bending rolls, 4. The ball male screw 61 according to claim 1, wherein the moving device 6 of the moving table 5 axially penetrates the hollow portion of the lifting table 4 having a U-shaped cross section, and a drive motor 62 at one end thereof. Equipped with a ball male screw 6 at one end of the moving table 5.
1. A device for discharging a bending roll product, comprising a ball female screw 63 meshing with 1. 5. The moving device 6 of the moving table 5 according to claim 1, wherein the chain 64 is provided near both ends of the moving table 5.
A device for unloading a bending roll, characterized in that both ends of the chain are locked, chain wheels 65A and 65B are pivotally supported near both ends of the lifting table 4 to wind the chain, and a drive means for the chain wheel is provided. 6. The wire rope 66 according to claim 5, further comprising a wire rope 66 replaced with the chain 64, and a cylindrical wheel 67 replaced with the chain wheel 65, and a biasing spring 68 is provided in front of a locking portion of the wire rope 66. The product unloading device for bending rolls,