CN215467237U - Hydraulic bending machine - Google Patents

Hydraulic bending machine Download PDF

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Publication number
CN215467237U
CN215467237U CN202121493223.8U CN202121493223U CN215467237U CN 215467237 U CN215467237 U CN 215467237U CN 202121493223 U CN202121493223 U CN 202121493223U CN 215467237 U CN215467237 U CN 215467237U
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China
Prior art keywords
relay
port
material blocking
detection switch
speed change
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CN202121493223.8U
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Chinese (zh)
Inventor
姜君杰
陈明杰
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Jiangsu Yangli Hydraulic Equipment Co ltd
Original Assignee
Jiangsu Guoli Forging Machine Tool Co Ltd
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Priority to CN202121493223.8U priority Critical patent/CN215467237U/en
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Abstract

The utility model relates to a hydraulic bending machine, which comprises a workbench, wherein a lower bending die is fixed on the workbench, an upper bending die matched with the lower bending die is installed at the lower part of a sliding block, the upper part of the sliding block is driven by a main cylinder, a rear material blocking bracket is arranged at the rear side of the workbench, a plurality of rear material blocking cylinders are installed on the rear material blocking bracket, and rear blocking fingers abutting against the rear side edge of a plate are respectively arranged at the front ends of piston rods of the rear material blocking cylinders; a vertical signaling support rod is arranged on the sliding block, a speed change point and a material pressing collision block are arranged on the vertical signaling support rod, and an upper limit collision block is positioned below the speed change point and the material pressing collision block; one side of the vertical signaling supporting rod is provided with a detection support, and the detection support is sequentially provided with a speed change point detection switch, a material pressing detection switch and an upper limit detection switch from top to bottom. The hydraulic press can accurately position the plate, and can avoid the abrasion of the rear stop finger or the damage of the rear stop mechanism caused by the bending deformation of the plate.

Description

Hydraulic bending machine
Technical Field
The utility model relates to a hydraulic bending machine, and belongs to the technical field of bending machines.
Background
The rear stock stop is an indispensable mechanism of the bending machine and is generally arranged on the rear side of a frame of the bending machine. The X-axis direction transmission and guide device of the bending machine adopts two parallel guide rails or polished rods. The rear material blocking bracket is arranged between two parallel guide rails or polished rods and is driven by a belt or a chain on the motor to move back and forth. And a plurality of rear stop finger mechanisms are arranged on the rear stop support, and the position of the rear stop support is adjusted according to actual needs, so that the rear side edge of the plate is tightly attached to the rear stop finger mechanisms to obtain positioning. The angle of bending of sheet material is guaranteed by the die cavity size of lower mould, and at the in-process that the upper die pressed the sheet material to the lower mould, the sheet material produced the deformation of stretching at the position of bending, and at this in-process, each backstop bears very big effort and the frictional force of deformation of stretching, leads to back stock stop to warp easily to cause great machining error to appear in the sheet material, directly cause user's unnecessary loss, can damage backstop even.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provide a hydraulic bending machine which can not only accurately position a plate, but also avoid the abrasion of a rear stop finger or the damage of a rear stop mechanism caused by the bending deformation of the plate.
In order to solve the technical problems, the hydraulic bending machine comprises a workbench, wherein a lower bending die is fixed on the workbench, an upper bending die matched with the lower bending die is installed at the lower part of a sliding block, the upper part of the sliding block is driven by a main cylinder, a rear material blocking support is arranged at the rear side of the workbench, a plurality of rear material blocking cylinders are installed on the rear material blocking support, and rear blocking fingers abutting against the rear side edge of a plate are respectively arranged at the front ends of piston rods of the rear material blocking cylinders; the sliding block is provided with a vertical signaling supporting rod, the vertical signaling supporting rod is provided with a speed change point, a material pressing collision block and an upper limit collision block, and the upper limit collision block is positioned below the speed change point and the material pressing collision block; one side of the vertical signaling supporting rod is provided with a detection support, and the detection support is sequentially provided with a speed change point detection switch, a pressing material detection switch and an upper limit detection switch from top to bottom.
As an improvement of the utility model, a plug cavity air port of each rear material blocking cylinder is connected with an A port of a two-position five-way electromagnetic reversing valve YV3, a rod cavity air port of each rear material blocking cylinder is connected with a B port of a two-position five-way electromagnetic reversing valve YV3, a P port of the two-position five-way electromagnetic reversing valve YV3 is connected with an outlet of a pneumatic triple piece, an inlet of the pneumatic triple piece is connected with an air source pipeline through a stop valve, and an R port and an S port of the two-position five-way electromagnetic reversing valve YV3 are communicated with the atmosphere.
As a further improvement of the utility model, a foot switch SF1 is connected in series with a photoelectric protection switch AK, a delay port contact of a dwell time relay KT1 and a coil of a first relay KA1 in an alternating current control loop in sequence, a first normally open contact of the first relay KA1 is connected in parallel with the foot switch SF1, and a material pressing detection switch SQ5, a second normally open contact of the first relay KA1 and a coil of a fifth relay KA5 are also connected in series in the alternating current control loop; a first normally open contact of the fifth relay KA5 is connected with the photoelectric protection switch AK in parallel; a third normally open contact of the first relay KA1 and a coil of the master cylinder electromagnetic directional valve YV1 are connected in series in a direct current control loop; and a second normally-open contact of the fifth relay KA5 is connected with a coil of the two-position five-way electromagnetic directional valve YV3 in series in a direct-current control loop.
Compared with the prior art, the utility model has the following beneficial effects: when the plate is loaded, the rear edge of the plate abuts against the rear stop finger, so that the plate can be accurately positioned; when the upper bending die presses the plate, the plate is fixed between the upper bending die and the lower bending die, the plate is not greatly deformed, the influence on the rear stop finger is small, at the moment, the piston rod of the rear stop cylinder retracts, the rear stop finger is made to timely retreat and separate from the plate, abrasion or damage of the rear stop finger caused by deformation generated by bending of the plate is avoided, the service life of the rear stop mechanism is prolonged, and economic loss caused by errors of the rear stop mechanism is reduced.
Drawings
Fig. 1 is a front view of the hydraulic bending machine for positioning the plate material.
Fig. 2 is a front view of the hydraulic bending machine for bending the plate material.
Fig. 3 is a pneumatic schematic diagram of each rear stock stop cylinder in the utility model.
Fig. 4 is an electrical schematic diagram of the present invention.
In the figure: 1. a master cylinder; 2. a slider; 3. bending the upper die; 4. bending the lower die; 5. a work table; 6. a rear material blocking cylinder; 7. a rear stop finger; 8. a rear material blocking bracket; 9. a vertical signaling strut; 10. a speed change point and a material pressing collision block; 11. the upper limit is fast to bump; 12. detecting the bracket; 13. a stop valve; 14. a pneumatic triplet; 15. a plate material; sq1. shift point detection switch; SQ5. pressing detection switch; SQ7. upper limit detection switch; sf1. foot switch; AK. photoelectric protection switch; yv1. master cylinder electromagnetic directional valve; YV3. two-position five-way electromagnetic directional valve; kt1. pressure holding time relay; KA1. a first relay; KA5. fifth relay.
Detailed Description
In the following description of the present invention, the terms "front", "rear", "left", "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not mean that the device must have a specific orientation.
As shown in fig. 1 to 4, the hydraulic bending machine of the utility model comprises a workbench 5, a lower bending die 4 is fixed on the workbench 5, an upper bending die 3 matched with the lower bending die 4 is installed at the lower part of a slide block 2, the upper part of the slide block 2 is driven by a main cylinder 1, a rear material blocking bracket 8 is arranged at the rear side of the workbench 5, a plurality of rear material blocking cylinders 6 are installed on the rear material blocking bracket 8, and rear blocking fingers 7 abutting against the edge of the rear side of a plate are respectively arranged at the front ends of piston rods of the rear material blocking cylinders 6; a vertical signaling support rod 9 is arranged on the sliding block 2, a speed change point and material pressing collision block 10 and an upper limiting collision block 11 are arranged on the vertical signaling support rod 9, and the upper limiting collision block 11 is positioned below the speed change point and the material pressing collision block 10; one side of the vertical signaling supporting rod 9 is provided with a detection bracket 12, and the detection bracket 12 is sequentially provided with a speed change point detection switch, a material pressing detection switch and an upper limit detection switch from top to bottom.
The air port of the plug cavity of each rear material blocking cylinder 6 is connected with the port A of the two-position five-way electromagnetic reversing valve YV3, the air port of the rod cavity of each rear material blocking cylinder 6 is connected with the port B of the two-position five-way electromagnetic reversing valve YV3, the port P of the two-position five-way electromagnetic reversing valve YV3 is connected with the outlet of the pneumatic triple piece 14, the inlet of the pneumatic triple piece 14 is connected with an air source pipeline through the stop valve 13, and the port R of the two-position five-way electromagnetic reversing valve YV3 is communicated with the port S and the atmosphere.
The foot switch SF1 is sequentially connected with the photoelectric protection switch AK, a delay port contact of the pressure maintaining time relay KT1 and a coil of the first relay KA1 in series in an alternating current control loop, a first normally open contact of the first relay KA1 is connected with the foot switch SF1 in parallel, and a material pressing detection switch SQ5, a second normally open contact of the first relay KA1 and a coil of the fifth relay KA5 are also connected with the alternating current control loop in series; a first normally open contact of the fifth relay KA5 is connected with the photoelectric protection switch AK in parallel; a third normally open contact of the first relay KA1 and a coil of the master cylinder electromagnetic directional valve YV1 are connected in series in a direct current control loop; and a second normally-open contact of the fifth relay KA5 is connected with a coil of the two-position five-way electromagnetic directional valve YV3 in series in a direct-current control loop.
When feeding, the two-position five-way electromagnetic directional valve YV3 is in a power-off state, the P port of the two-position five-way electromagnetic directional valve YV3 is communicated with the A port, the B port is communicated with the S port, compressed air enters the plug cavity of the rear material blocking cylinder 6, the piston rod of the rear material blocking cylinder 6 extends out, air in the rod cavity is discharged through the B port and the S port, at the moment, the rear stop finger 7 is in a limiting position, and the rear edge of the plate 15 abuts against the rear stop finger 7 to be accurately positioned, as shown in figure 1.
When the foot switch SF1 is stepped on, a coil of the first relay KA1 is electrified, a first normally open contact of the first relay KA1 is attracted and self-protected, a third normally open contact of the first relay KA1 is closed, so that the coil of the master cylinder electromagnetic directional valve YV1 is electrified, the master cylinder 1 pushes the sliding block 2 to move downwards quickly, and when a speed change point and the material pressing collision block 10 moves downwards to trigger the speed change point detection switch SQ1, the speed change point and the material pressing collision block are changed into slow speed movement.
When a speed change point and a material pressing collision block 10 descend to trigger a material pressing detection switch SQ5, the bending upper die 3 presses the plate 15, the plate 15 is fixed between the bending upper die 3 and the bending lower die 4, the plate is not greatly deformed, as the material pressing detection switch SQ5 and a second normally open contact of the first relay KA1 are both closed, a coil of the fifth relay KA5 is electrified, the coil of the two-position five-way electromagnetic reversing valve YV3 is electrified, an opening A of the two-position five-way electromagnetic reversing valve YV3 is communicated with an opening R, an opening P is communicated with an opening B, compressed air enters a rod cavity of the rear material blocking cylinder 6, air in the plug cavity is discharged from the opening A and the opening R, a piston rod of the rear material blocking cylinder 6 retracts, the rear material blocking finger 7 is separated from the plate 15 at proper time, and abrasion or damage of the rear material blocking finger 7 caused by bending deformation of the plate is avoided. And then the sliding block 2 further moves downwards, the plate is bent and molded, after pressure maintaining is carried out for a period of time, a contact of a delay port of a pressure maintaining time relay KT1 is disconnected, a coil of the first relay KA1 is powered off, a third normally open contact of the first relay KA1 is disconnected, so that a coil of a main cylinder electromagnetic directional valve YV1 is powered off, the main cylinder 1 drives the sliding block 2 to return, and when the upper limit bump 11 moves upwards to trigger an upper limit detection switch SQ7, the sliding block 2 stops moving upwards to prepare for the next round of action.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention. Technical features of the present invention which are not described may be implemented by or using the prior art, and will not be described herein.

Claims (3)

1. The utility model provides a hydraulic bending machine, includes the workstation, be fixed with the lower mould of bending on the workstation, the lower part of slider is installed and is gone up the mould of bending that the lower mould matches of bending, and the upper portion of slider is by master cylinder drive, the rear side of workstation is equipped with back and keeps off material support, its characterized in that: a plurality of rear material blocking cylinders are mounted on the rear material blocking support, and rear blocking fingers abutting against the rear side edge of the plate are arranged at the front end of a piston rod of each rear material blocking cylinder respectively; the sliding block is provided with a vertical signaling supporting rod, the vertical signaling supporting rod is provided with a speed change point, a material pressing collision block and an upper limit collision block, and the upper limit collision block is positioned below the speed change point and the material pressing collision block; one side of the vertical signaling supporting rod is provided with a detection support, and the detection support is sequentially provided with a speed change point detection switch, a pressing material detection switch and an upper limit detection switch from top to bottom.
2. Hydraulic bending machine according to claim 1, characterized in that: the air port of the plug cavity of each rear material blocking cylinder is connected with the port A of the two-position five-way electromagnetic reversing valve (YV3), the air port of the rod cavity of each rear material blocking cylinder is connected with the port B of the two-position five-way electromagnetic reversing valve (YV3), the port P of the two-position five-way electromagnetic reversing valve (YV3) is connected with the outlet of the pneumatic triple piece, the inlet of the pneumatic triple piece is connected with the air source pipeline through the stop valve, and the port R of the two-position five-way electromagnetic reversing valve (YV3) is communicated with the port S and the atmosphere.
3. Hydraulic bending machine according to claim 2, characterized in that: a foot switch (SF1), a time delay port contact of a pressure maintaining time relay (KT1) and a coil of a first relay (KA1) are sequentially connected in series in an alternating current control loop, a first normally open contact of the first relay (KA1) is connected in parallel with the foot switch (SF1), and a material pressing detection switch (SQ5), a second normally open contact of the first relay (KA1) and a coil of a fifth relay (KA5) are also connected in series in the alternating current control loop; a first normally open contact of the fifth relay (KA5) is connected with the photoelectric protection switch (AK) in parallel; a third normally open contact of the first relay (KA1) and a coil of the master cylinder electromagnetic directional valve (YV1) are connected in series in a direct current control loop; and a second normally-open contact of the fifth relay (KA5) and a coil of the two-position five-way electromagnetic directional valve (YV3) are connected in series in the direct-current control loop.
CN202121493223.8U 2021-07-02 2021-07-02 Hydraulic bending machine Active CN215467237U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121493223.8U CN215467237U (en) 2021-07-02 2021-07-02 Hydraulic bending machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121493223.8U CN215467237U (en) 2021-07-02 2021-07-02 Hydraulic bending machine

Publications (1)

Publication Number Publication Date
CN215467237U true CN215467237U (en) 2022-01-11

Family

ID=79724023

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121493223.8U Active CN215467237U (en) 2021-07-02 2021-07-02 Hydraulic bending machine

Country Status (1)

Country Link
CN (1) CN215467237U (en)

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GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20220218

Address after: 225000 No. 17, shepherd Road, high tech Industrial Development Zone, Yangzhou City, Jiangsu Province

Patentee after: Jiangsu Yangli Hydraulic Equipment Co.,Ltd.

Address before: No.18, Yangli Road, Yangzhou hi tech Industrial Development Zone, Hanjiang District, Yangzhou City, Jiangsu Province 225127

Patentee before: JIANGSU GUOLI FORGING MACHINE TOOL Co.,Ltd.