JPH0314259Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement of a plate supply device for a plate processing machine.

[Prior Art] When conveying and positioning a plate using a plate supply device attached to a plate processing machine such as a shearing machine or a punch press, a ball screw or a combination of a rack and pinion is often used as the drive mechanism. A carriage is horizontally moved by a drive device using one of these, and a plate, one edge of which is gripped by a clamp of the carriage, is conveyed to the plate processing machine and positioned. In many cases, the loading of the plate material into the plate material supply device is carried out from the side perpendicular to the conveyance path.

[Problems to be Solved by the Invention] However, when a ball screw is used to drive the carriage, the ball screw becomes very expensive for a long conveyance stroke of approximately 2 m or more, and is difficult to employ. On the other hand, when a rack and pinion combination is used, the pinion and motor are usually attached to the carriage, which increases the weight of the carriage, which is disadvantageous because the motor output must be correspondingly increased. Furthermore, when loading the plate material from the side of the conveyance path, the structure is generally complicated, resulting in a large and expensive device, and the front side of the plate processing machine is often blocked, which is inconvenient.

[Purpose of the invention] This invention was devised in view of the problems of the conventional device mentioned above.It is possible to use equipment for long conveyance strokes at low cost through simple structural improvements, and the drive motor can be fixed. motor power is reduced,
Furthermore, it is an object of the present invention to provide a plate material supplying device with a simple structure that allows the loading device to be small and inexpensive.

[Structure of the invention] In order to achieve the above-mentioned object, this invention is a sheet material feeding device in which a carriage equipped with a clamp for gripping a sheet material is arranged in front of a sheet material processing machine so as to be movable back and forth, and the carriage is A loading table is provided above the standby position furthest away from the plate processing machine, and the loading table placed between the standby position and the plate processing machine is placed between the high position raised to receive the plate from the loading table and the above. The mounting table is provided vertically movably at a height position of a pass line that supports the plate material transferred by the carriage, and the above-mentioned placing table is used as a plate material receiving table and a plate material supporting table, and the carriage is moved in the front and back direction. The above-mentioned carriage is connected to an endless chain stretched in the front-rear direction close to the guiding guide rail, and a motor is provided to drive the chain.

[Operation of the invention] With the above configuration, the plate material can be easily moved from the loading table onto the loading table by raising the loading table to a high position. By lowering the loading table to the pass line height, the carriage can also feed the plate material to the plate processing machine. During acceleration when the carriage is moved by driving a chain by motor drive, the connecting part of the carriage is pulled by the chain and tilted with respect to the guide rail. However, since the chain is close to the guide rail, The moment acting to tilt the carriage is small, and the carriage is moved smoothly without galling between the guide rail and the carriage.

[Example] Hereinafter, an example of the plate material supplying device of this invention will be described as a first example.
This will be explained with reference to the drawings in FIGS.

A shearing machine 1 serving as a plate processing machine is installed, and a plate supply device 3 and a mounting device 5 are disposed on the near side, that is, the front side, and the mounting device 5 on the rear side, respectively, at substantially the same level, on a so-called pass line. The main components of the plate supply device 3 are a carriage 9 with a clamp 7, a loading table 13 with a lifting device 11, and a carriage drive device 1.
5.

A plurality of clamps 7 for gripping the edges of the plate material 17 are attached to the carriage 9 in a structure whose attachment position is variable. The main body of the carriage 9 is the plate material supply device 3
The main frame 19 is mounted on a guide rail 21 disposed along the entire length of the main frame 19 at the center in the width direction via a shoe 23, and is capable of reciprocating horizontally in a straight line. .

At the so-called standby position where the carriage 9 is located at the front end of the main frame 19, that is, at the farthest position from the shearing machine 1, a mounting table 13 forms a part of the conveyance path between the carriage 9 and the shearing machine 11. It is arranged. Placement table 1
3 has a large number of freely rotatable bodies 27 such as free bears arranged on a horizontal frame 25 so that the plate material 17 placed thereon can be horizontally moved easily and freely in any direction. Furthermore, the mounting table 13 is supported by the guide rail 21 that runs longitudinally through the center of the main frame 19.
is divided into left and right parts.

The loading table 13 is part of the conveyance path of the plate material supplying device 3, and is also part of the loading device for the plate material 17. When lifted by the lifting device 11, the plate material 17 comes to the same level as the loading table 29 provided above the carriage 9, and their opposing edges approach each other, and the plate material 17 moves horizontally from the loading table 29 onto the loading table 13. It can be transferred with . When lowered by the lifting device 11, the top level of the group of freely rotating bodies 27 on the mounting table 13 matches the pass line level, and the edge of the mounting plate 17 can be gripped by the clamp 7 of the carriage 9. Become.

The elevating device 11 for the mounting table 13 is composed of a parallelogram-shaped link 31 swingably disposed between the lower surface of the mounting table 13 and a lower member of the main frame 19, and a driving air cylinder 33. Of course, these links 31 and air cylinders 33 are provided on the left and right sides of the mounting table 13, which is divided into left and right parts. The lifting and lowering movement of the mounting table 13 by the lifting device 11 follows the path indicated by the arrow in FIG.

The loading table 29 loads the carriages 9 in a plurality of strips in parallel with horizontal beams 35 on a frame on a support that is erected from the main frame 19 members near both sides of the carriage 9 placed in the standby position.
A large number of rollers 37 are mounted at a predetermined pitch on these horizontal beams. roller 37
The axial direction is perpendicular to the traveling direction of the carriage 9, that is, the conveyance path, and the plate material 17 placed on the loading table 29 can be raised and easily horizontally moved toward the loading table 13 arranged at the same level.

The drive device 15 for the horizontal linear reciprocating movement of the carriage 9 uses a chain transmission mechanism in this case and is constructed as follows. Of course, a roller chain is used as the chain due to its use in this case. A linear geared motor 39 is installed below near the end of the main frame 19 far from the shearing machine 1,
A main chain transmission mechanism 43 is driven through an intermediate chain transmission mechanism 41 consisting of a sprocket wheel and a roller chain. The main chain transmission mechanism 43 is composed of a main roller chain 49 that extends between main sprocket wheels 45a and 45b mounted near both ends of the main frame 19 and a chain tensioning idle wheel 47 provided below. . As is clear from FIG. 3, this main roller chain 49 is provided close to the guide rail 21.

The lower member of the carriage 9 is connected to the main roller chain 49 to perform back and forth movement, positioning, etc. A pinion gear 51 is rotatably mounted on the lower surface of the carriage 9 on the side of the guide rail shoe 23, and this rotation drives a pulse encoder 55 mounted on the lower surface of the carriage 9 via a timing belt 53. A rack 57 that meshes with the pinion gear 51 is disposed along almost the entire length of the main frame 19. A photo sensor (not shown) is provided below the pass line of the main frame 19 to detect the end of the plate material 17 being conveyed.

The pulse encoder 55, the photo sensor, etc. are connected to a numerical control device (not shown) of the shearing machine 1 including the plate supply device 3. The tip of the plate material 17 being conveyed is detected by a photo sensor with respect to the planned cutting dimension input to the control device, and the number of pulses corresponding to the distance of the planned cutting dimension from this point is converted and counted. An approach deceleration command is issued to the motor 39 in advance so that the plate material 17 stops when the cut line of the shearing machine 1 is reached at the cut line, and then a stop command is issued, followed by a cutting command when the cutting is completed. The series of operations for taking out finished boards is performed by numerical control.

The plate material supply device 3 of this embodiment configured as described above is operated as follows. Air cylinder 33
The loading table 13 is raised by driving in the extending direction, and is arranged at the same level as the loading table 29. After placing the plate material 17 on the loading table 29, the plate material 17 is moved horizontally by pushing by hand and transferred onto the loading table 13. Next, the air cylinder 33 is retracted to lower the mounting table 13 onto the transport line, that is, onto the pass line. Then, the edge of the plate material 17 is gripped by the clamp 7, which has been set by adjusting the position of the carriage 9 in advance. From then on, control the carriage 9 using the control device as described above.
Move to position and stop to perform cutting.

Thus, in the plate material supplying device 3 of this embodiment, the carriage drive device 15 uses a chain transmission mechanism, so that it is lightweight and
High speed and highly repeatable stopping accuracy can be obtained. Moreover, even in the case of a long conveyance stroke of 2 m or more, the chain cost and the main frame price proportional to the length increase, which is only a very small increase in the overall price of the plate material feeding device 3, and furthermore, the overall price is lower than that of the conventional method. It is cheaper and requires less drive motor output than a ball screw or rack and pinion mechanism for moving the carriage.

In this example, a conveyance speed of 40 m/min and a repeatable stopping accuracy of ±0.05 mm were obtained.

Since the loading device for the plate material 17 is composed of the loading table 29 and the loading table 13 having an extremely simple swing link type lifting mechanism 11, the entire loading device is extremely simple and lightweight. And it is small.

The fact that the conveyance path and the loading path are arranged in parallel and stacked one above the other also helps in reducing the weight and size. For these reasons, it is a lightweight, compact facility with a small footprint and can be installed at low cost.

The plate material supplying device of this invention is not limited to the one embodiment described above, but can be modified and applied in various ways. For example, the so-called air table method, in which air is ejected from small holes instead of a group of freely rotatable bodies on the mounting table, makes the horizontal movement of the plate even easier, and when the plate is stopped at the same time, the air jet is stopped at the same time, and the plate is stopped. It is also possible to increase the frictional force to make it easier to maintain stopping accuracy. Further, the driving source for lifting and lowering the mounting table may be an oil cylinder or a motor cylinder instead of the air cylinder, or the link may be fixed to a shaft and this shaft may be directly rotated by a motor.

[Effect of the invention] As can be understood from the explanation of the embodiments above, the gist of the invention is as stated in the claims for utility model registration, and as is clear from the description, the invention is the carriage 9
A loading table 29 is provided above the standby position that is farthest from the plate processing machine 1, and the loading table 13 placed between the standby position and the plate processing machine 1 is moved from the loading table 29 to the plate material 17. It is provided so as to be movable up and down at a high position for receiving the material and a high position for passing the pass line, and serves as both a board receiving table and a board supporting table, and is close to the guide rail 21 that guides the carriage 9 in the front and back direction. A carriage 9 is connected to a chain 49 which is stretched.

Therefore, by driving the motor 39, the chain 49
When the carriage 9 drives the guide rail 21
It will move back and forth as guided by. At this time, since the motor 39 is not attached to the carriage 9, the weight of the carriage 9 can be reduced. In addition, since the chain 49 is located close to the guide rail 21, when the movement of the carriage 9 is accelerated, the moment exerted by the chain 49 to tilt the carriage 9 relative to the guide rail 21 is small, and This allows for smooth movement without causing any galling phenomenon with the carriage 9.

Furthermore, as mentioned above, the loading table 13 serves as both the material receiving table and the plate supporting table, which simplifies the overall configuration, reduces the overall height of the plate supply device, and shortens the overall length. This allows the overall configuration to be made more compact.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of an embodiment of the device of this invention, FIG. 2 is a schematic side view, and FIG. 3 is an enlarged sectional view of the main part of FIG. 2. Explanation of main drawing symbols, 1... Shearing machine (plate processing machine), 3... Plate supply device, 7...
...clamp, 9...carriage, 11...lifting mechanism (for mounting table), 13...mounting table,
15... Carriage drive device, 41... Intermediate chain transmission mechanism, 43... Main chain transmission mechanism.

Claims (1)

[Scope of utility model registration request] A plate material feeding device is constructed by disposing a carriage 9 equipped with a clamp 7 for gripping a plate material 17 in front of the plate processing machine 1 so as to be movable back and forth.
A loading table 29 is provided above the standby position that is furthest away from the sheet material processing machine 1, and the loading table 13 placed between the standby position and the sheet material processing machine 1 is moved from the loading table 29 to the sheet material processing machine 1.
the elevated position and said carriage 9 to receive the
The loading table 13 is provided so as to be vertically movable at a pass line height position that supports the plate material 17 being transferred by the plate material receiving table and the plate material supporting table. The carriage 9 is connected to an endless chain 49 which is stretched in the front-rear direction in the vicinity of the guide rail 21 that guides the chain 49.
A plate material supply device characterized by being provided with a motor 39 for driving.