CN112044989A - Gauge adjustment sheet bending machine with positioning mechanism - Google Patents
Gauge adjustment sheet bending machine with positioning mechanism Download PDFInfo
- Publication number
- CN112044989A CN112044989A CN202010722123.1A CN202010722123A CN112044989A CN 112044989 A CN112044989 A CN 112044989A CN 202010722123 A CN202010722123 A CN 202010722123A CN 112044989 A CN112044989 A CN 112044989A
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- China
- Prior art keywords
- fixedly connected
- positioning mechanism
- plate
- adjustment sheet
- bending machine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/04—Movable or exchangeable mountings for tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/002—Positioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to the technical field of machining of a gauge adjustment sheet, and discloses a gauge adjustment sheet bending machine with a positioning mechanism, which comprises a machine base, wherein a U-shaped support frame is fixedly connected to the upper end of the machine base, hydraulic cylinders are symmetrically and fixedly connected to the inner side wall of the support frame, the output ends of the two hydraulic cylinders are fixedly connected with a mounting plate together, a plurality of punches are mounted on the mounting plate, the tip of the end part of each punch is formed by an included angle formed by two inclined planes, the tip angles of the end parts of the punches are different, a T-shaped mounting hole is formed in the upper end of the machine base, a die base is slidably connected in the mounting hole, a plurality of notches with different included angles are formed in the upper end. The invention can bend the gauge adjustment sheet into different angles, so that the gauge adjustment sheet is very convenient to fix and dismount, and the bending efficiency of the gauge adjustment sheet is improved.
Description
Technical Field
The invention relates to the technical field of gauge adjustment sheet processing, in particular to a gauge adjustment sheet bending machine with a positioning mechanism.
Background
At present, with the gradual expansion of railway construction scale, the demand of parts and components used with steel rails is increasing, and thus, a great challenge is brought to production and processing enterprises, for example, when the steel rails are processed, a large number of gauge adjusting sheets are needed, and the gauge adjusting sheets are sheet-shaped members with regular shapes, and need to be bent before being used. The existing track gauge adjustment sheet bending machine utilizes a punch and a die to punch and bend the track gauge adjustment sheet. However, the conventional track gauge adjusting sheet bending machine cannot bend the track gauge adjusting sheet into different angles, the positioning mechanism is troublesome to fix and detach the track gauge adjusting sheet, and the bending efficiency of the track gauge adjusting sheet is low.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a gauge adjustment sheet bending machine cannot bend a gauge adjustment sheet into different angles, and a positioning mechanism is troublesome to fix and disassemble the gauge adjustment sheet, and the invention provides the gauge adjustment sheet bending machine with the positioning mechanism.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gauge adjustment sheet bending machine with a positioning mechanism comprises a machine base, wherein a U-shaped support frame is fixedly connected to the upper end of the machine base, hydraulic cylinders are symmetrically and fixedly connected to the inner side wall of the support frame, the output ends of the two hydraulic cylinders are fixedly connected with a mounting plate together, a plurality of punches are mounted on the mounting plate, the tip of the end part of each punch is formed by an included angle formed by two inclined surfaces, the tip angles of the end parts of the punches are different, a T-shaped mounting hole is formed in the upper end of the machine base, a die base is slidably connected in the mounting hole, a plurality of notches with different included angles are formed in the upper end of the die base, and; the positioning mechanism comprises movable grooves, movable blocks, a threaded rod, a fixed plate, a sliding hole, a movable plate, a spring, a positioning air cylinder, a pressing plate and a motor, wherein the movable grooves are symmetrically formed in the upper end of the machine base, the movable blocks are slidably connected into the movable grooves, threaded holes are formed in the movable blocks, the threaded rod is rotatably connected with the walls of the two movable grooves through bearings, threads in opposite directions are arranged on the wall of the threaded rod in the two movable grooves, the movable blocks are in threaded connection with the threaded rod, the fixed plate is fixedly connected to the upper end of the movable blocks, the sliding hole is formed in the fixed plate, the sliding hole is in sliding connection with the movable plate, the two springs are fixedly connected between the movable plate and the fixed plate, the positioning air cylinder is fixedly connected to the movable plate, the pressing plate is fixedly connected to the output, the output end of the motor is connected with one end of the threaded rod through the coupler.
Preferably, a plurality of fixing holes are formed in the mounting plate, a screw rod is fixedly connected to the upper end of the punch head, the upper end of the screw rod penetrates through the fixing holes and extends outwards, and a nut is connected to the rod wall of the screw rod in a threaded mode.
Preferably, the four corners of the bottom of the machine base are fixedly connected with supporting legs, and the bottom ends of the supporting legs are fixedly connected with a bottom plate.
Preferably, an elastic pad is fixedly connected to the wall of the mounting hole, and the elastic pad is arranged between the mounting hole and the die holder.
Preferably, the bottom of the die seat is fixedly connected with a T-shaped push rod.
Preferably, the bottom of the pressing plate is fixedly connected with a plurality of anti-abrasion convex blocks, and the cross section of each anti-abrasion convex block is isosceles trapezoid.
Preferably, a reinforcing rib is fixedly connected between the positioning cylinder and the movable plate.
Preferably, a plurality of the punches are arranged in a straight shape uniformly and equidistantly.
Preferably, a plurality of gaskets are arranged between the nut and the mounting plate, and the gaskets are sleeved on the screw rods.
Compared with the prior art, the invention provides a gauge adjustment sheet bending machine with a positioning mechanism, which has the following beneficial effects:
1. the track gauge adjusting sheet bending machine with the positioning mechanism is characterized in that a base, a support frame, a hydraulic cylinder, a mounting plate, a punch, a mounting hole, a die seat, a movable groove, a movable block, a threaded rod, a fixing plate, a sliding hole, a movable plate, a spring, a positioning cylinder, a pressing plate and a motor are arranged, when the track gauge adjusting sheet needs to be bent into a specific angle, the appropriate punch is mounted on the mounting plate, the track gauge adjusting sheet is placed on the die seat, the motor is started to rotate forwards to drive the threaded rod to rotate forwards, so that the two movable blocks move oppositely to drive the two fixing plates to move close to the track gauge adjusting sheet, the positioning cylinder is placed above two sides of the track gauge adjusting sheet, the positioning cylinder is started, the pressing plate is pressed on the upper end of the track gauge adjusting sheet to position the track gauge adjusting sheet, the hydraulic cylinder is started to drive the mounting plate and the punch and bend the track gauge, the spring is compressed by the fly leaf, does benefit to the punching press of gauge adjustment piece and bends, can bend into different angles with the gauge adjustment piece for it is very convenient to fix and dismantle gauge adjustment piece, improves the efficiency of bending to the gauge adjustment piece.
2. This take positioning mechanism's gauge adjustment piece bender, through setting up screw rod and nut, when will need to install suitable drift, pass the fixed orifices that corresponds with the screw rod on the drift for drift upper end offsets bottom the mounting panel, revolves the nut on the screw rod, can fix the drift installation on the mounting panel, and the rotating nut breaks away from the screw rod, can make drift and mounting panel separation, the installation and the dismantlement of the drift of being convenient for.
The parts which are not involved in the device are the same as or can be realized by adopting the prior art, and the device can bend the gauge adjusting sheet into different angles, so that the gauge adjusting sheet is very convenient to fix and detach, and the bending efficiency of the gauge adjusting sheet is improved.
Drawings
Fig. 1 is a schematic structural diagram of a gauge adjustment sheet bending machine with a positioning mechanism according to the present invention;
FIG. 2 is a top view of a die base of a gauge adjustment sheet bending machine with a positioning mechanism according to the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
fig. 4 is an enlarged view of a portion B in fig. 1.
In the figure: the anti-abrasion device comprises a base 1, a support frame 2, a hydraulic cylinder 3, a mounting plate 4, a punch 5, a mounting hole 6, a die seat 7, a movable groove 8, a movable block 9, a threaded rod 10, a fixing plate 11, a sliding hole 12, a movable plate 13, a spring 14, a positioning cylinder 15, a pressing plate 16, a motor 17, a screw rod 18, a nut 19, support legs 20, an elastic cushion 21, a push rod 22, an anti-abrasion bump 23, a reinforcing rib 24 and a gasket 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, a gauge adjustment sheet bending machine with a positioning mechanism comprises a machine base 1, wherein the upper end of the machine base 1 is fixedly connected with a U-shaped support frame 2, the inner side wall of the support frame 2 is symmetrically and fixedly connected with hydraulic cylinders 3, the output ends of the two hydraulic cylinders 3 are fixedly connected with a mounting plate 4 together, the mounting plate 4 is provided with a plurality of punches 5, the tip of the end part of each punch 5 is formed by an included angle formed by two inclined planes, the tip angles of the end part of each punch 5 are different, the upper end of the machine base 1 is provided with a T-shaped mounting hole 6, a die base 7 is slidably connected in the mounting hole 6, the upper end of the die base 7 is provided with a; the positioning mechanism comprises movable grooves 8, movable blocks 9, a threaded rod 10, a fixed plate 11, a sliding hole 12, movable plates 13, springs 14, a positioning cylinder 15, a pressing plate 16 and a motor 17, wherein the two movable grooves 8 are symmetrically formed in the upper end of the machine base 1, the movable blocks 9 are connected in the movable grooves 8 in a sliding mode, threaded holes are formed in the movable blocks 9, the threaded rod 10 is rotatably connected with the walls of the two movable grooves 8 through bearings, threads in opposite directions are formed in the rod walls of the threaded rods 10 in the two movable grooves 8, the movable blocks 9 are connected to the threaded rod 10 in a threaded mode, the fixed plate 11 is fixedly connected to the upper end of the movable blocks 9, the sliding hole 12 is formed in the fixed plate 11, the sliding hole 12 is connected with the movable plates 13 in a sliding mode, the two springs 14 are fixedly connected between the movable plates 13 and the fixed plate 11, the positioning cylinder 15 is fixedly connected to, the output end of a motor 17 is connected with one end of a threaded rod 10 through a coupler, a proper punch 5 is installed on a mounting plate 4, a gauge adjusting sheet is placed on a die seat 7, the motor 17 is started to rotate forwards to drive the threaded rod 10 to rotate forwards, two movable blocks 9 move oppositely to drive two fixing plates 11 to move close to the gauge adjusting sheet, a positioning cylinder 15 is arranged above two sides of the gauge adjusting sheet, the positioning cylinder 15 is started, a pressing plate 16 is tightly pressed at the upper end of the gauge adjusting sheet to position the gauge adjusting sheet, a hydraulic cylinder 3 is started to drive the mounting plate 4 and the punch 5 to move downwards, the punch 5 punches and bends the gauge adjusting sheet, two positioning cylinders 15 and a movable plate 13 move oppositely, a spring 14 is compressed by the movable plate 13 to facilitate the punching and bending of the gauge adjusting sheet, the gauge adjusting sheet can be bent into different angles, and the fixing and the dismounting of the gauge are very convenient, the bending efficiency of the gauge adjustment sheet is improved.
A plurality of fixed orifices has been seted up on mounting panel 4, drift 5 upper end fixedly connected with screw rod 18, the upper end of screw rod 18 passes the fixed orifices and outwards extends, and threaded connection has nut 19 on its pole wall, when will needing to install suitable drift 5, pass the fixed orifices that corresponds with screw rod 18 on the drift 5, make drift 5 upper end offset with mounting panel 4 bottom, revolve nut 19 on screw rod 18, can fix drift 5 installation on mounting panel 4, rotating nut 19 breaks away from screw rod 18, can make drift 5 and mounting panel 4 separate, be convenient for the installation and the dismantlement of drift 5.
Equal fixedly connected with supporting leg 20 in 1 bottom four corners department of frame, the bottom fixedly connected with bottom plate of supporting leg 20 for frame 1 can reach suitable operation height.
The hole wall of the mounting hole 6 is fixedly connected with an elastic pad 21, the elastic pad 21 is arranged between the mounting hole 6 and the die holder 7, and the die holder 7 can be buffered after being stressed.
The bottom of the die base 7 is fixedly connected with a T-shaped push rod 22, so that the push rod 22 can be pushed conveniently to take out the die base 7.
The bottom of the pressing plate 16 is fixedly connected with a plurality of anti-abrasion convex blocks 23, the cross sections of the anti-abrasion convex blocks 23 are isosceles trapezoids, and the friction force between the pressing plate 16 and the gauge adjustment sheet is increased, so that the pressing plate 16 can firmly fix the gauge adjustment sheet.
The reinforcing ribs 24 are fixedly connected between the positioning cylinder 15 and the movable plate 13, so that the connecting strength of the positioning cylinder 15 and the movable plate 13 is increased.
A plurality of drift 5 is the even equidistance setting of style of calligraphy.
A plurality of gaskets 25 are arranged between the nut 19 and the mounting plate 4, the gaskets 25 are sleeved on the screw rods 18, and the contact area between the nut 19 and the mounting plate 4 is increased.
In the invention, a proper punch 5 is arranged on an installation plate 4, a gauge adjusting sheet is placed on a die seat 7, a motor 17 is started to rotate forwards to drive a threaded rod 10 to rotate forwards, so that the two movable blocks 9 move in opposite directions to drive the two fixed plates 11 to move close to the gauge adjustment sheet, so that the positioning cylinder 15 is arranged above the two sides of the gauge adjustment sheet, the positioning cylinder 15 is started, the pressure plate 16 is pressed on the upper end of the gauge adjustment sheet to position the gauge adjustment sheet, the hydraulic cylinder 3 is started to drive the mounting plate 4 and the punch 5 to move downwards, the punch 5 punches and bends the gauge adjustment sheet, the two positioning cylinders 15 and the movable plate 13 move oppositely, the spring 14 is compressed by the movable plate 13, which is beneficial to stamping and bending the gauge adjustment sheet, the gauge adjustment sheet can be bent into different angles, the fixing and the dismounting of the gauge adjustment sheet are very convenient, and the bending efficiency of the gauge adjustment sheet is improved; when the punch 5 is required to be installed properly, the screw rod 18 on the punch 5 penetrates through the corresponding fixing hole, the upper end of the punch 5 abuts against the bottom of the mounting plate 4, the nut 19 is screwed on the screw rod 18, the punch 5 can be installed and fixed on the mounting plate 4, the nut 19 is screwed and separated from the screw rod 18, the punch 5 and the mounting plate 4 can be separated, and the punch 5 can be conveniently installed and detached.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A gauge adjustment sheet bending machine with a positioning mechanism comprises a machine base (1) and is characterized in that, the upper end of the machine base (1) is fixedly connected with a U-shaped support frame (2), the inner side wall of the support frame (2) is symmetrically and fixedly connected with hydraulic cylinders (3), the output ends of the two hydraulic cylinders (3) are fixedly connected with a mounting plate (4) together, a plurality of punches (5) are arranged on the mounting plate (4), the tip of the end part of each punch (5) is formed by an included angle formed by two inclined surfaces, the angles of the tip at the end part of the punch (5) are different, a T-shaped mounting hole (6) is arranged at the upper end of the machine base (1), a die seat (7) is connected in the mounting hole (6) in a sliding manner, a plurality of notches with different included angles are formed in the upper end of the die seat (7), and a positioning mechanism is mounted on the machine base (1);
the positioning mechanism comprises a movable groove (8), a movable block (9), a threaded rod (10), a fixed plate (11), a sliding hole (12), a movable plate (13), a spring (14), a positioning cylinder (15), a pressing plate (16) and a motor (17), wherein the movable groove (8) is symmetrically arranged at the upper end of the machine base (1), the movable block (9) is connected in the movable groove (8) in a sliding manner, a threaded hole is formed in the movable block (9), the threaded rod (10) is rotatably connected with the two movable groove walls (8) through a bearing, threads with opposite directions are arranged on the rod wall of the threaded rod (10) in the movable groove (8), the movable block (9) is in threaded connection with the threaded rod (10), the fixed plate (11) is fixedly connected at the upper end of the movable block (9), the sliding hole (12) is arranged on the fixed plate (11), and the sliding hole (12) is connected with the movable plate (13) in a sliding manner, two spring (14) fixed connection is between fly leaf (13) and fixed plate (11), location cylinder (15) fixed connection is on fly leaf (13), clamp plate (16) fixed connection is at the output of location cylinder (15), one side at frame (1) is installed in motor (17), the output of motor (17) passes through the shaft coupling and is connected with threaded rod (10) one end.
2. The gage adjustment sheet bending machine with the positioning mechanism is characterized in that a plurality of fixing holes are formed in the mounting plate (4), a screw (18) is fixedly connected to the upper end of the punch (5), the upper end of the screw (18) penetrates through the fixing holes and extends outwards, and a nut (19) is in threaded connection with the rod wall of the screw.
3. The gauge adjustment sheet bending machine with the positioning mechanism is characterized in that supporting legs (20) are fixedly connected to four corners of the bottom of the machine base (1), and a bottom plate is fixedly connected to the bottom ends of the supporting legs (20).
4. The gage tab bending machine with the positioning mechanism is characterized in that an elastic pad (21) is fixedly connected to the hole wall of the mounting hole (6), and the elastic pad (21) is arranged between the mounting hole (6) and the die base (7).
5. The gage tab bending machine with positioning mechanism as claimed in claim 1, wherein a T-shaped push rod (22) is fixedly connected to the bottom of the die base (7).
6. The gage adjustment sheet bending machine with the positioning mechanism is characterized in that a plurality of anti-abrasion convex blocks (23) are fixedly connected to the bottom of the pressing plate (16), and the cross section of each anti-abrasion convex block (23) is isosceles trapezoid.
7. The gage tab bending machine with positioning mechanism as claimed in claim 1, wherein a reinforcing rib (24) is fixedly connected between the positioning cylinder (15) and the movable plate (13).
8. The gage tab bending machine with positioning mechanism according to claim 1, wherein a plurality of said punches (5) are arranged in a straight shape uniformly and equidistantly.
9. The gage tab bending machine with positioning mechanism as claimed in claim 2, wherein a plurality of washers (25) are arranged between the nut (19) and the mounting plate (4), the washers (25) are sleeved on the screw (18).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202010722123.1A CN112044989A (en) | 2020-07-24 | 2020-07-24 | Gauge adjustment sheet bending machine with positioning mechanism |
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CN202010722123.1A CN112044989A (en) | 2020-07-24 | 2020-07-24 | Gauge adjustment sheet bending machine with positioning mechanism |
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CN112044989A true CN112044989A (en) | 2020-12-08 |
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CN202010722123.1A Pending CN112044989A (en) | 2020-07-24 | 2020-07-24 | Gauge adjustment sheet bending machine with positioning mechanism |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112845593A (en) * | 2020-12-25 | 2021-05-28 | 瓯锟科技温州有限公司 | Metal sheet composite rolling mill with roll temperature online detection control function and use method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58148021A (en) * | 1982-02-26 | 1983-09-03 | Hitachi Ltd | Plate bending device |
DE3739949C1 (en) * | 1987-11-25 | 1989-03-16 | Hewlett Packard Gmbh | Stop device for a plate-bending machine |
CN207787474U (en) * | 2018-01-11 | 2018-08-31 | 允强五金制品(深圳)有限公司 | A kind of multifunctional efficient bending and molding hardware dies |
CN209222928U (en) * | 2018-10-25 | 2019-08-09 | 深圳市新兴田科技有限公司 | A kind of bending protective device of numerical control bender |
CN209452560U (en) * | 2019-01-19 | 2019-10-01 | 西安北方惠安防化设备有限公司 | A kind of Plate Bending Machine |
CN209849726U (en) * | 2019-04-09 | 2019-12-27 | 惠州市祥兴机械设备有限公司 | Novel hydraulic plate bending machine |
-
2020
- 2020-07-24 CN CN202010722123.1A patent/CN112044989A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58148021A (en) * | 1982-02-26 | 1983-09-03 | Hitachi Ltd | Plate bending device |
DE3739949C1 (en) * | 1987-11-25 | 1989-03-16 | Hewlett Packard Gmbh | Stop device for a plate-bending machine |
CN207787474U (en) * | 2018-01-11 | 2018-08-31 | 允强五金制品(深圳)有限公司 | A kind of multifunctional efficient bending and molding hardware dies |
CN209222928U (en) * | 2018-10-25 | 2019-08-09 | 深圳市新兴田科技有限公司 | A kind of bending protective device of numerical control bender |
CN209452560U (en) * | 2019-01-19 | 2019-10-01 | 西安北方惠安防化设备有限公司 | A kind of Plate Bending Machine |
CN209849726U (en) * | 2019-04-09 | 2019-12-27 | 惠州市祥兴机械设备有限公司 | Novel hydraulic plate bending machine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112845593A (en) * | 2020-12-25 | 2021-05-28 | 瓯锟科技温州有限公司 | Metal sheet composite rolling mill with roll temperature online detection control function and use method thereof |
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Application publication date: 20201208 |