JPH0737417U - Support device for work plate of press molding machine - Google Patents

Abstract

(57) [Summary] [Purpose] By mounting a supporting device on a horizontal beam with an abutment machine that moves forward and backward with respect to the die of the press molding machine, the plate to be processed is placed horizontally and the bending operation is easy. Be sure and secure. [Structure] A press forming machine that bends a plate to be processed with a punch and a die is a supporting device that is mounted on a horizontal beam that operates an abutting machine with an NC system, and the supporting device is an upper and lower frame of a U-shaped frame body. A screw rod and a guide rod are vertically provided between them, and a block is vertically movably interposed between the rods, and a supporting rod is provided on the block so as to project elastically in the die direction, and a plate to be processed is provided on the supporting rod. A supporting device for a work plate of a press machine in which the front end side of the machine is placed and arranged horizontally.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a horizontal support device for a plate to be mounted on a press forming machine, and more particularly, by providing the support device in the same frame as an abutting machine which is electrically numerically controlled to horizontally move and adjust the height. The present invention relates to a supporting device in which a work plate is horizontally arranged in a flange size and which enables safe and reliable work.

[0002]

[Prior art]

 Press forming machines (benders) for bending and forming plates to be processed such as metal plates have been published in design handbooks, etc., and are sold in large quantities by Komatsu and Amada. FIG. 1 is a schematic view of the essential parts of HYDRAULIC PRESS BRAKE E QUIPMENT NC-9EX manufactured by Amada. This press molding machine is 1. This is a bending process for a work plate with a length of 5 to 4.0 m, and is equipped with a fixed punch on the upper side and a movable die on the lower side for worker safety. The die and the abutting machine are raised on the same table and pressed only by the foot movement of the operator's pedal. Other processing steps, timing, bending angle, dimensions, butting dimensions. For selecting the height of the abutting body and retracting to prevent the height of the abutting body from interfering with each other, input data with the key in the microcomputer that stores the program to perform numerical operation (NC system) to perform the machining operation. .

A large number of various types of products are commercially available from many manufacturers for the press molding machine having the above-described configuration and operation. When the plate to be processed is normally inserted horizontally from the die of this molding machine and brought into contact with the abutting surfaces of a pair of abutting machines whose back gauges (flange dimensions) are set in advance, the pedals are pressed and bent by the press. It During that time, the worker holds the edge of the plate to be processed horizontally with both hands. This operation, even if there is a feeling of work, involves failure and risk in the case of large-scale processing. In order to eliminate this drawback, a method has been proposed in which an iron rod or the like is inserted through a through hole made in the lower part of the die of the die to horizontally hold the plate to be processed at its tip.

[0004]

[Problems to be solved by the device]

 However, even if a person skilled in the art holds the plate horizontally by operating the iron bar at the hand, the hand may be out of order.In addition, when the petal is stepped on, the iron bar is pushed in and the die and punch pinch the plate to be processed. The operation of pulling out most of the portion at the moment of doing is complicated. Furthermore, the use of manual operation means in precision machines that are electronically controlled and operated not only causes work delays and defective products, but also results in a lack of work safety.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a supporting device in close proximity to the abutting machine so that the supporting device is more elastic than the supporting device. It is an object of the present invention to provide a supporting device in which the tip of the plate to be processed is placed on the protruding support rod and then comes into contact with the surface of the abutting body to be horizontally arranged in a sure alignment with the flange size.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to horizontally support a front end edge of a plate to be processed inserted between a punch and a die. (EN) Provided is a supporting device which comes into contact with an abutting machine and is bent surely at a position of a flange size and arranged so as to have good workability.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, two or more supporting devices according to the present invention are usually mounted on a horizontal beam to which a striking device is mounted and which can approach and retract to a day. This support device has drive screw rods and guide rods vertically installed on the upper and lower frames of a U-shaped frame that is fixed to a horizontal beam, and can be elastically retracted to blocks that are interposed between these rods and whose vertical position can be adjusted. The support rod is provided so as to project in the die direction.

[0008]

[Action]

 The press molding machine operated by the control operation of the NC system equipped with the supporting device of the present invention sets the reference height position (0 point on the operation panel) of the supporting rod of the supporting device and the abutting body of the abutting device. To adjust the horizontal beam close to the die. At this time, when the tip of the supporting rod protruding from the abutting surface collides with the side surface of the die, it is elastically retracted, and the manual handle or the driving means of the electric motor is operated so that the center part of the front surface of the abutting body becomes the upper edge of the die. Adjust the height. Then, the upper peripheral surface of the supporting rod is arranged at the same height as the upper edge of the die. This arrangement position is stored in the NC system as a reference height. Then, in order to perform the bending process of the plate to be processed, the flange size and the preparation time interval (including the reversal time) for the bending process are stored. At that time, in the second and subsequent bending steps, the vertical dimension of the abutting body surface is stored according to the bending direction, and the key of the NC system is pressed and stored in order to move and fix it. When the bending direction of the plate to be processed is complicated, the operator does not make an error in the judgment. Therefore, it is possible to adopt the method of performing the same bending process for one plate of the plate and moving to the next process. is there. In this way, various housings, containers, etc. are successively molded.

During the bending process of the plate to be processed, when the plate to be processed is inserted and arranged between the punch and the die, first, the pedal is stepped up and down to raise and lower the die, the abutment body, and the supporting device integrated with the lift table. Use the hydraulic cylinder under the table to raise it. Then, the plate to be processed is instantly clamped by the punch and the die. At this time, if the plate to be machined is not arranged horizontally, a tilt may occur at the front and rear edges of the plate to be machined, and the operator who is holding the grip may be out of control to make a suitable bend. Many. In order to prevent this from happening, it is supported horizontally by a supporting device.

Further, at the moment when the plate to be processed is clamped by the punch and the die, the supporting device and the abutment device are moved backward through the guide rail, and the worker releases the gripped hand. This is because the plate to be processed is horizontally fixed at a predetermined position by being sandwiched between the punch and the die. Further, the retracting of the supporting device and the abutting device is such that the flange part bent in the previous step does not interfere with the abutting device and the supporting device when they are sequentially bent.

When the above-mentioned plate to be processed is sandwiched by the punch and the die, at the next moment, the lifting table is raised and the work is pressed and bent at a predetermined angle. At this time, the front and rear edge sides of the plate to be processed are jumped up, but since they have been clamped beforehand, the predetermined position is bent very accurately. The bent plate is subjected to the bending process in the next step, and the abutting machine and the supporting device are automatically moved to the positions pre-input by the key to the NC system. Further, it is also possible to repeat only the first step and perform bending while replacing a large number of plates to be processed one after another.

After being bent in the first bending step and then inverted, the flange of the plate to be processed is arranged below. Then, in the next bending step, the supporting device holding rod is moved to the position below the reference height by the flange dimension. Also, when the flange is bent upward in the first bending step and the next bending process is performed, the position of the support rod is not set to the reference height, and the abutment body of the abutment machine is set above the reference height as necessary. You can move and place it. In this way, the support rod and the abutment body are automatically changed and arranged at predetermined positions above or below the reference height to facilitate bending work.

[0013]

【Example】

 Examples will be described with reference to the drawings. The conventionally known press molding machine (bender) shown in FIG. 1 is operated by an NC system. An elevator platform 2 is provided on a plurality of hydraulic cylinders (not shown) between the plate frames 1 on both sides. A die holder 4 to which a V-shaped die 3 is fixed is fixedly provided on the front side of the table 2. Horizontal guide rails 5 are provided at right angles to the die 3 on both sides of the upper surface of the lift. A horizontal beam 7 is mounted on both sliding bodies 6 which are mounted on guide rails and controlled to slide forward and backward. A hitting machine 8 which has been conventionally used is movably fastened and fixed to both sides of the horizontal beam 7, and a supporting device 9 according to the present invention is movably fastened and fixed to both sides thereof. A punch 12 is clamped and fixed to a plate frame 10 provided above the front ends of the plate frames 1 on both sides via a boulder 11. A cover member 13 is provided on the front side of the die holder. On the floor below the cover, there is provided a long pedal 14 pulled out from the floor and operated by a hydraulic cylinder.

As shown in FIG. 2, the abutting machine 8 is provided with a lower wall 17, an upper wall 18 and covers 19 and 20 on both sides in front of the upper and lower ends of the thick rear wall 16 to form a housing 21. A dovetail groove 22 is bored on the back surface of the rear wall 17, and the horizontal beam 7 in which the dovetail groove 22 is slidably provided has ridges 23 formed on the upper and lower ends of one side surface of the rectangular tube. Then, a screw (not shown) integrated with the lever 24 of the upper wall 18 is screwed into the rear wall 16, and the protrusion 23 is tightened and fixed at the tip thereof. Guide rods 25, 26 are provided on both sides of the front portions of the upper and lower walls 17, 18, and a U-shaped block 27 interposed between the guide rods 25, 26 is slidable in the vertical direction. A container 28 containing two air cylinders (not shown) is fixedly installed in the block 27. Then, a rod 29 protruding downward from the air cylinder arranged at the front portion is provided, and the lower end thereof is connected to a lower block 30 interposed in the guide rods 25 and 26. The block 30 is provided with an abutting body 32 having an abutting surface 31 with its base end pivotally attached and protruding toward the front side. The abutting body 32 is movably fixed to the upper and lower predetermined positions from the two air pipes 33 and 34 via the rod 29 of the cylinder. A screw rod 36 having a handle 35 is arranged at a rear end of one side of the upper wall 18. The screw rod is screwed into one side portion of the U-shaped block 27, and when the screw rod is rotated by the handle 35, the block 27 moves up and down. If the handle 35 is connected to an NC system or an electric motor independently operated by a switch is connected to the screw rod 36, the abutment body 32 can be vertically moved and fixed at a predetermined position. Further, a lever 38 is provided on the upper end portion of the cover 19, and a tightening screw (not shown) to which the lever 38 is connected is tightened on the upper end of the screw rod 36 to prevent the undesired rotation of the screw rod 36.

In the supporting device 9 according to the present invention, a lower frame 41 and an upper frame 42 are projected from upper and lower ends of a back frame 40 made of a thick plate material to form a side wall U-shaped frame body. The upper and lower projections 23 of the horizontal beam 7 are slidably fitted in the dovetail groove 43 on the back surface of the back frame 40, the lever 44 is provided at the rear portion of the upper frame, and a screw (not shown) connected to the lever 44 is provided. ) To screw it into the back frame and tighten the ridges 23 to fix the U-shaped frame upright.

A vertical screw rod 45 and a guide rod 46 are vertically provided in parallel between one side portions of the upper and lower frames 41, 42 with a space therebetween. The upper end of the rotatable screw rod 45 is connected to a handle 47 provided on the upper side of the upper frame 42. A solid block 48 having a rectangular parallelepiped shape is interposed between the screw rod 45 and the guide rod 46 so as to be vertically movable. That is, a female screw 49 is provided in the longitudinal direction at the rear portion of the block 48 to screw the screw rod 45. The lower block portion of the female screw is a hole having a diameter larger than that of the screw rod 45 to reduce the frictional resistance of the female screw when the screw rod is rotated. A sleeve 50 is arranged in a through hole through which the guide rod 46 is inserted into the block 48 so that the block 48 can move up and down smoothly.

A through hole 51 is bored horizontally from one side of the front surface of the block 48 toward the back surface in a direction orthogonal to the die, and the inside of the through hole 51 is slid over a certain length from the front surface of the block. A circular support rod 53, in which 52 is disposed, is movably inserted and arranged so as not to rock in the vertical direction. A shaft hole 54 is provided in the axial direction from the rear end surface of the support rod 53, and one end of a bullet 55 such as a coil spring is arranged in the shaft hole 54, and the other end of the bullet is a contact plate 56 arranged on the rear surface of the block. Lock on. A long hole 57 is formed in the axial direction from the lower part of the peripheral surface of the through hole 51 to reach the lower surface of the block 48. On the other hand, a stopper 58 is provided below the lower part of the peripheral surface of the support rod 53 so that the elongated hole 57 Insert into. As a result, the tip of the support rod normally projects and stops from the abutting surface, and the plate 60 is placed on this projecting portion. Then, when the abutting surface 31 is brought close to the die 3 to set the reference position, the support rod 53 pulls against the elasticity of the ammunition 55 when coming into contact with the die.

The abutment body 32 of the abutment machine 8 is rapidly moved up and down by an air cylinder in the container 28 to stop, and the handle 35 adjusts the up and down position. In place of the handle 35, a coupling is connected to the screw rod 36, and a motor 61 is provided to this via a speed reducer. The motor 61 may be operated by the NC system, but may be operated by providing its own switch.

In place of the handle 47 of the support device 9 corresponding to the abutment machine 8, a screw 62 may be provided with a motor 62 via a coupling and a speed reducer.

When the abutting body 32 and the supporting rod 53 are set at the reference position with respect to the die 3, the plate 60 is moved and arranged to the flange dimension position which is the bending position of the plate 60 to be processed. Then, the plate 60 to be processed is inserted from above the die, placed on the support rod, and brought into contact with the abutting surface 31 and arranged horizontally. Then, the pedal 14 is depressed, and the plate to be processed is clamped by the die and the punch. At this time, the horizontal beam 7 retreats and releases the grasped hand. After that, it is pressed and the plate to be processed is bent accurately.

After bending the first flange, the horizontal beam is moved to the next flange size in performing the second bending step. Then, when the first bent flange portion faces upward, only the abutting body 32 is moved upward to perform pressing, if necessary. When the first bending lung is directed downward, the supporting rod 53 is arranged downward by the size of the flange and then pressed.

When the plate to be processed reaches a length of 4 m, about four abutting machines and supporting devices are used for the horizontal beam. At this time, if the front edge of the plate to be processed is curved, the two abutting bodies arranged at the center actuate the air tube 39 to step up upwards. At this time, the support rod 53 is also covered. Since it does not interfere with the processed plate, it is sufficient to keep the protruding state.

The supporting device according to the present invention was used by mounting it on a press molding machine in which a die moves up and down. However, it is not necessary to use it only in a molding machine having this structure, and a punch having a structure in which a punch moves up and down for press working. You can use it in a machine without any problems.

[0024]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

The supporting device of the present invention is mounted on a horizontal beam which is equipped with an abutment machine of a press molding machine and which moves forward and backward in a horizontal direction. The relative height position of the support rod with respect to the abutment body is manually or electrically driven. If the adjustment is set, all the other bending operations of the plate to be processed can be performed by the conventional operations.

By using the supporting device of the present invention, the plate to be processed can be horizontally arranged with the flange size without complicated operation, and the bending work by the press can be performed accurately, safely and securely. It is possible.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a conventional press molding machine equipped with a supporting device of the present invention.

FIG. 2 is an enlarged perspective view showing a state in which the supporting device of the present invention is mounted on a horizontal beam on which an abutting machine is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 10 Plate frame 2 Elevating table 3 Die 5 Guide rail 6 Sliding body 7 Horizontal beam 8 Abutment machine 9 Support device 12 Punch 14 Pedal 21 Housing 22 Dovetail groove 23 Protruding strip 25, 26, 46 Guide rod 27 U-shape Shape block 29 Rod 30, 48, block 32 Abutment body 35, 47 Handle 36, 45 Screw rod 49 Female screw 51 Through hole 52 Sleeve 53 Support rod 55 Ammunition machine 60 Plate to be processed

Claims (1)

[Scope of utility model registration request] 1. A press forming machine for pressing and bending a plate to be processed with a punch and a die is a horizontal beam whose operation is controlled by an NC system. The device has a rectangular parallelepiped shape that is vertically installed between the upper and lower frames of a U-shaped frame and has a guide rod and a screw rod with a handle or motor connected to the upper side.The screw rod is screwed onto the guide rod and is vertically movable in the guide rod. An actual block is interposed, a horizontal through hole is bored in the block in a direction orthogonal to the die, and a slidable support rod is arranged in the through hole, and a rear end of the support rod and a rear face of the block are provided. Is equipped with a compression ammunition, and a stopper provided in the downward direction from the support rod is inserted into the support rod and the long hole formed in the lower surface of the block, and the support rod is projected from the abutting machine by the ammunition. A support device for a work plate of a press forming machine, which is characterized in that