JPH0677929U - Table structure of plate processing machine - Google Patents

Abstract

(57) [Summary] [Purpose] In a plate material processing machine that has a discharge conveyor for cut pieces of plate material in the center, it is possible to perform drive by the feed screw of the carriage in the center. As a result, a biased moment is not generated during movement, the weight of the carriage is reduced, the table moving speed is improved, and the processing time is shortened. [Structure] Fixed table 5a and this fixed table 5a
A carriage 8 having a movable table 5b which can be moved back and forth on both sides is installed on the base frame 2. Carriage 8
A feed screw device 12 for driving the and is moved in the widthwise central portion. A shooter 6 that discharges the cut pieces of the plate material downward is provided near the processing position of the fixed table 5a. The conveyor 20 that carries out the discharged plate material cut pieces is installed below the base frame 2. The fixed frame 2 is provided with an opening that allows the cut pieces of plate material to pass from the shooter 6 to the conveyor 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a table structure of a plate material processing machine, which is provided in a plate material processing machine such as a punch press machine, a laser processing machine, or a shalling machine, to feed a plate material.

[0002]

[Prior art]

 Conventionally, in a turret punch press provided with a conveyer for carrying out plate material cut pieces to be products or slag, a table structure shown in FIG. 5 is generally adopted. That is, a work table 32 including a fixed table 32a in the center and movable tables 32b located on both sides of the fixed table 32a is provided on the base frame 31 on which the upper and lower turrets 30a and 30b are installed. Both movable tables 32b and 32b are fixed integrally with the carriage 33, and are driven along the rails 34 on the base frame 31 in the front-back direction (Y-axis direction). A cross slide 35 that is driven in the left-right direction (X-axis direction) is mounted on the carriage 33, and a work holder 36 that holds the plate material W of the work table 32 is attached to the cross slide 35. The carriage 33 is driven back and forth by a feed screw device 37. The feed screw device 37 includes a ball nut 38 fixed to the lower portion of the carriage 33, a Y-axis feed screw 39, and a servomotor 40 for rotating the feed screw 39.

In the vicinity of the processing position P of the fixed table 32a, an opening 42 for discharging a plate material fragment generated by punching downward is provided so as to be openable and closable, and the plate material discharged from the opening 42 through the shooter 41. A discharge conveyor 43 that carries out the cut pieces is arranged on the base frame 31 below the fixed table 32a. Since the discharge conveyor 43 is arranged in the center in this way, in order to avoid this, the Y-axis feed screw device 37 is arranged on the base frame 31 while being biased to one side from the center portion in the width direction.

[0004]

However, since the feed screw device 37 is eccentrically arranged in this way, a biased moment is generated in the carriage 33 with respect to the forward and backward feed force. Therefore, if the rigidity of the carriage is not increased, the predetermined machining accuracy cannot be maintained, and if the rigidity is increased, the weight of the carriage 33 is increased, which causes a decrease in the table moving speed, and a large inertia acts so that the stop time is increased. There is a problem that it becomes long.

An object of the present invention is to provide a plate material processing machine capable of feeding a carriage without generating a biased moment while having a conveyor for discharging a plate material cutting piece in the center and improving table speed and processing accuracy. It is to provide a table structure.

[0006]

[Means for Solving the Problems]

 The table structure of the plate processing machine of the present invention has a fixed table and a carriage having a movable table that can move back and forth on both sides of the fixed table, which is installed on a base frame, and a feed screw device for driving the carriage back and forth is wide. Provide in the center of the direction. A shooter that discharges the cut pieces of plate material is installed near the processing position of the fixed table, and a conveyor that carries out the cut pieces of plate material that is discharged is installed below the base frame.

[0007]

[Action]

 According to this structure, since the conveyor that carries out the cut pieces of the plate material is provided below the base frame, the feed screw device that drives the carriage back and forth can be provided at the center of the base frame in the width direction. Since the feed screw device is placed in the center in this way, the carriage that is integrated with the movable tables on both sides does not generate a biased moment with respect to the forward and backward feed, and therefore the carriage does not tilt. , The processing accuracy can be improved.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. The plate material processing machine 1 is composed of a turret punch press, and a pair of upper and lower turrets 3a and 3b are installed on a base frame 2, and a punch drive mechanism is housed in a machine body cover 4 which covers the turrets 3a and 3b. A work table 5 is arranged in front of the turrets 3a and 3b.

As shown in the plan view of FIG. 2, the work table 5 is composed of a fixed table 5a arranged in the central portion of the base frame 2 and movable tables 5b, 5b located on the left and right sides of the fixed table 5a. In the vicinity of the processing position P, there is provided a shooter 6 for discharging the processed plate material cut piece downward. The shooter 6 is normally held in a horizontal position as a lid member that closes the shooter opening 7, and tilts at the time of discharging to form an discharging path.

The left and right movable tables 5b, 5b are formed integrally with the carriage 8 and are movable in the front-rear direction (Y-axis direction) on a pair of left and right rails 9 provided on the base frame 2. A cross slide 10 is provided on the carriage 8 so as to be movable laterally (X axis direction), and a work holder 11 is attached to the cross slide 10.

A Y-axis feed screw device 12 for moving the carriage 8 in the Y-axis direction is arranged at a ball nut 13 fixed to a lower portion of the carriage 8 and at a center portion in the width direction on the base frame 2 in the Y-axis direction. The feed screw 14 and the Y-axis servomotor 15 that rotationally drives the feed screw 14. The X-axis feed screw device 16 includes a ball nut 17 fixed to the cross slide 10, a feed screw 18 provided on the carriage 8, and an X-axis servomotor 19.

Below the base frame 2, a plate material cutting piece discharge conveyor 20 is arranged extending from below the shooter 6 to the front side of the base frame 2, and the shooter 6 is provided on the base frame 2 as shown in FIGS. 3 and 4. A cut side passage port 2a is formed for dropping the plate material cut pieces discharged from the discharge conveyor 20.

The operation of the above configuration will be described. The plate material W held by the work holder 11 is moved by the Y-axis feed screw device 12 in the Y-axis direction of the carriage 8 and the X-axis feed screw device 16 in the X-axis direction of the cross slide 10. It is sent in the axial direction and an arbitrary position is positioned at the punching position P. Here, punching is performed by the operation of the punch drive mechanism. At the time of this feeding, the carriage 8 is integrated with the left and right movable tables 5b, 5b and becomes heavy, but the Y-axis feed screw device 12 is installed at the center of the base frame 2 in the width direction. Therefore, a biased moment is not generated in the carriage 8. Therefore, the carriage 8 is not required to have a large rigidity, the carriage 8 does not tilt forward and backward, and punching can be performed accurately.

A plate material cut piece which is a product or slag produced by punching is slid on the shooter 6 by tilting the shooter 6 to open the shooter opening 7, and the cut piece passage opening 2 a of the base frame 2 is inserted. It passes and falls onto the discharge conveyor 20 below the base frame 2. The cut pieces of plate material are conveyed by the discharge conveyor 20 in the direction of arrow Q and discharged to the front side of the plate material processing machine 1.

[0015]

[Effect of device]

 In the table structure of the plate material processing machine of the present invention, the conveyor for carrying out the plate material cutting pieces is arranged below the base frame, and the feed screw device for driving the carriage forward and backward is provided at the center of the width direction of the base frame. There is no biased moment. Therefore, the structure for improving the rigidity is not required, so the carriage can be made lighter than before, and the table moving speed can be increased and the processing time can be shortened without lowering the processing accuracy.

[Brief description of drawings]

FIG. 1 is a perspective view of a plate material processing machine according to an embodiment of the present invention.

FIG. 2 is a plan view of the plate material processing machine.

FIG. 3 is a front view of the plate material processing machine.

FIG. 4 is a partially cutaway side view of the plate processing machine.

FIG. 5 is a plan view showing a conventional example.

[Explanation of symbols]

2 ... Base frame, 5 ... Work table, 5a ... Fixed table, 5b ... Movable table, 6 ... Shooter, 7 ... Shooter opening, 8 ... Carriage, 12 ... Y-axis feed screw device, 13 ... Ball nut, 14 ... Feed Screw, 15 ... Y axis servo motor, 20 ... Discharge conveyor

Claims (1)

[Scope of utility model registration request] 1. A fixed table and a carriage having a movable table that can move back and forth on both sides of the fixed table are installed on a base frame, and a feed screw device for driving the carriage back and forth is provided in a central portion in the width direction. A table structure of a plate material processing machine in which a shooter for discharging plate material cut pieces downward is provided in the vicinity of a processing position of a fixed table, and a conveyor for carrying out discharged plate material cut pieces is provided below a base frame.