CN211135038U

CN211135038U - Hydraulic bending machine

Info

Publication number: CN211135038U
Application number: CN201921864961.1U
Authority: CN
Inventors: 张文文; ***; 武三梅; 张云霞; 武亚丽
Original assignee: ANHUI YAWEI MACHINE TOOL MANUFACTURING CO LTD
Current assignee: ANHUI YAWEI MACHINE TOOL MANUFACTURING CO LTD
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-07-31
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a hydraulic bending machine belongs to the equipment field of bending. The hydraulic synchronous lifting device comprises a rack, a pair of oil cylinders respectively arranged at two sides of the rack, a sliding block connected with a piston rod of the oil cylinder, a workbench below the sliding block, synchronous shafts respectively connected with the two oil cylinders, a driving mechanism used for controlling the synchronous shafts to rotate and a fixed arm, wherein one end of the fixed arm is fixedly connected to the rack, and the other end of the fixed arm is provided with a through hole; the synchronizing shaft passes through the through hole. The utility model discloses can make the bender in high-speed work, reduce rocking phenomenon of the synchronizing shaft of bender, prevent that the junction of synchronizing shaft and hydro-cylinder is impaired.

Description

Hydraulic bending machine

Technical Field

The utility model belongs to the equipment field of bending, more specifically say, relate to a hydraulic bending machine.

Background

The bending machine is important equipment for bending and forming workpieces in the sheet metal industry and is used for pressing steel plates into parts in various shapes according to process requirements. The bending machine is divided into a manual bending machine, a hydraulic bending machine and a numerical control bending machine, wherein the hydraulic bending machine mainly comprises a left stand column, a right stand column, a workbench and a cross beam, a left oil cylinder and a right oil cylinder are fixed on the stand columns, a sliding block is connected with a piston of the oil cylinder and moves up and down along a guide rail fixed on the stand columns, a lower die is fixed on the workbench, an upper die is installed at the lower end of the sliding block, a hydraulic system provides power, an electrical system gives instructions, and the sliding block drives the upper die to be closed downwards with the lower.

The existing hydraulic bending machine usually drives the sliding block to move up and down through the two oil cylinders, and the lower end of the sliding block can be kept parallel to the workbench when the sliding block moves up and down, so that the working precision of the bending machine is guaranteed, and the two oil cylinders are required to have extremely high synchronism. The existing bending machine is generally connected between hydraulic pumps of a plurality of oil cylinders through a synchronizing shaft, and then the synchronizing shaft is driven to rotate by a motor, so that the oil cylinders at two ends of the synchronizing shaft are driven to jointly control a sliding block to work for bending.

For example, the Chinese patent application number is: CN201420794893.7, published date: patent document 2015 5, month and 6 discloses a bending machine, and belongs to the field of bending machine manufacturing. A bending machine comprises a workbench, a sliding block, an oil cylinder I, an oil cylinder II, an oil cylinder III and 3 stand columns, wherein the stand columns are respectively arranged below the oil cylinder I, the oil cylinder II and the oil cylinder III and are connected with the workbench and the 3 oil cylinders; piston rods of the oil cylinder I, the oil cylinder II and the oil cylinder III are connected with the sliding block; the oil cylinder I, the oil cylinder II and the oil cylinder III are connected through a synchronizing shaft. The number of the oil cylinders and the number of the upright columns can be respectively 4-6, so that a 4-cylinder bending machine, a 5-cylinder bending machine or a 6-cylinder bending machine is formed.

The device drives the three oil cylinders to work synchronously through the synchronizing shaft, the working precision of the bending machine is guaranteed, and the device belongs to the condition that the oil cylinders work synchronously by connecting the plurality of oil cylinders through the single synchronizing shaft mentioned in the above. However, the inventor finds that, in actual use, when the synchronous shaft is connected with the oil cylinders, if the working frequency of the bending machine is too high and the working load of the oil cylinders is large, the pressure on the synchronous shaft is large, so that the synchronous shaft is shaken to generate large noise, the joint of the synchronous shaft and the oil cylinder is easily damaged after a long time, and even the sliding block is collided in serious cases. And if the working frequency of the bending machine is reduced, the working efficiency of the bending machine is reduced.

Disclosure of Invention

1. Problems to be solved

The problem of rocking takes place easily when the bender work is too fast to synchronizing shaft between the hydro-cylinder of current hydraulic bending machine, the utility model provides a hydraulic bending machine, it can make the bender in high-speed work, reduces rocking phenomenon of the synchronizing shaft of bender, prevents that synchronizing shaft and the junction of hydro-cylinder from being impaired.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A hydraulic bending machine comprises a frame, a pair of oil cylinders respectively arranged at two sides of the frame, a slide block connected with piston rods of the oil cylinders, a workbench below the slide block, synchronous shafts respectively connected with the two oil cylinders, a driving mechanism used for controlling the synchronous shafts to rotate and a fixed arm, wherein one end of the fixed arm is fixedly connected to the frame, and the other end of the fixed arm is provided with a through hole; the synchronizing shaft passes through the through hole.

As a further improvement of the technical scheme, a layer of rubber gasket is arranged on the inner side wall of the through hole.

As a further improvement of the technical scheme, the fixing arm comprises a connecting piece and a fixing piece; one end of the connecting piece is fixedly connected with the rack, and the other end of the connecting piece is fixedly provided with a fixing piece; the fixing piece is provided with the through hole.

As a further improvement of the technical scheme, the driving mechanism comprises an oil cylinder motor, two chain wheels and a chain; the oil cylinder motor is arranged on the frame, one chain wheel is fixed on the synchronizing shaft, the other chain wheel is fixed on an output shaft of the oil cylinder motor, and the two chain wheels are connected through a chain.

As a further improvement of the technical scheme, the material stopping device also comprises a rear material stopping device which is positioned at the same height with the workbench; the back dam device includes crossbeam, mounting panel and mounting, be equipped with on the mounting panel along the length direction of mounting panel remove keep off indicate and along the length direction of mounting panel arrange run through a plurality of regulation screws of mounting panel, the mounting is used for connecting crossbeam and mounting panel detachable and fixed.

As a further improvement of the technical scheme, the fixing piece comprises a through hole arranged on the mounting plate, a fixing screw hole arranged on the cross beam and a fixing bolt, and the cross beam is connected with the mounting plate through the through hole penetrating through the mounting plate and the fixing bolt of the fixing screw hole.

As a further improvement of the technical scheme, the adjusting screw holes are provided with two rows which are symmetrically arranged along the length direction of the mounting plate.

As a further improvement of the technical proposal, the device also comprises a transverse adjusting device; the transverse adjusting device comprises a lead screw nut mechanism, a driving guide rail and a driving slide block which are matched; the screw nut mechanism is arranged along the width direction of the cross beam, the driving guide rail is parallel to a screw of the screw nut mechanism, and the driving sliding block is fixedly connected with the rear baffle.

As a further improvement of the technical scheme, the two driving guide rails are symmetrically arranged on two sides of a lead screw of the lead screw nut mechanism.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model relates to a hydraulic bending machine, through single synchronizing shaft and actuating mechanism control two hydro-cylinders to work synchronously, the synchronism of two hydro-cylinders is strong, the bending accuracy is high, and it cup joints the fixed arm fixedly connected with the frame on the synchronizing shaft, and this fixed arm can prevent that the synchronizing shaft from producing violent rocking when the hydro-cylinder works at a high speed, avoid the synchronizing shaft and the junction of hydro-cylinder to be impaired and lead to the bender trouble;

(2) the utility model relates to a hydraulic bending machine, through set up the rubber packing ring on the through-hole inside wall of the fixed arm, can be when the hydro-cylinder is worked, the collision to synchronizing shaft and through-hole inside wall plays the cushioning effect, the protection synchronizing shaft can not be because of the too big damage of impact with the through-hole inner wall;

(3) the utility model relates to a hydraulic bending machine, the surface of the mounting panel of back dam device sets up the regulation screw that runs through the mounting panel along its length direction, when back dam device causes its local height to deviate because initial installation or long-term use or ground unevenness etc. lead to, when the working face of whole back dam is not parallel and level with the workstation of bender, can loosen mounting panel and crossbeam earlier, screw in the regulation screw of gyration again, adjust the length that this screw stretches out the mounting panel below and withstands the crossbeam, make the working face of back dam keep the state of parallel and level with the workstation of bender, then fix mounting panel and crossbeam together, through this kind of mode, can adjust the local height of back dam, make the working face of back dam keep the parallel and level with the workstation of bender, improve the bending precision of bender;

(4) the utility model relates to a hydraulic bending machine, its lateral adjustment device who is provided with control back dam device round trip movement to the width direction who keeps off the material crossbeam along the back is equipped with the drive guide rail, thereby accuracy nature when having improved back dam device lateral shifting, improves the precision of bending.

Drawings

FIG. 1 is a schematic diagram of a bending machine;

FIG. 2 is an isometric view of the stationary arm;

fig. 3 is a front view of the stationary arm;

FIG. 4 is a schematic structural view of a driving mechanism;

fig. 5 is a schematic structural view of the rear stock stop and the transverse adjusting mechanism;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is an enlarged view of a portion of FIG. 6;

in the figure: 1. a frame; 2. an oil cylinder; 3. a slider; 4. a work table; 5. a synchronizing shaft; 6. a drive mechanism; 61. a cylinder motor; 62. a chain; 7. a fixed arm; 71. a through hole; 72. a rubber gasket; 73. a connecting member; 74. a fixing member; 8. a rear material blocking device; 81. a cross beam; 82. mounting a plate; 83. a blocking finger; 84. adjusting the screw hole; 85. fixing the bolt; 86. a finger blocking motor; 87. a gear; 88. a rack; 9. a lateral adjustment mechanism; 91. a lead screw nut mechanism; 92. the guide rail is driven.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Example 1

A hydraulic bending machine is used for bending workpieces such as plates and the like, and comprises a rack 1, a pair of oil cylinders 2 respectively arranged on two sides of the rack 1, a sliding block 3 connected with piston rods of the oil cylinders 2, a workbench 4 below the sliding block 3, synchronizing shafts 5 respectively connected with the two oil cylinders 2, a driving mechanism 6 used for controlling the rotation of the synchronizing shafts 5 and a fixing arm 7 sleeved on the synchronizing shafts 5, wherein the specific structure and the working principle of the bending machine are described in detail below.

Wherein, a pair of hydro-cylinders 2 symmetry sets up the both sides upper portion at frame 1, and when actuating mechanism 6 control synchronizing shaft 5 rotated, synchronizing shaft 5 drove hydro-cylinder oil feed and produce oil to make the piston rod flexible, drive slider 3 up-and-down motion, bend the work to treating the work piece of bending on workstation 4. The two oil cylinders 2 are driven by the synchronizing shaft 5 to work together, so that the working synchronism of the two oil cylinders 2 can be well guaranteed, the two sides of the sliding block 3 are kept at the same horizontal height, and the bending precision of a workpiece to be bent is improved. However, in the actual work, when the operating frequency of bender is higher, the work load of hydro-cylinder 2 is great, can cause great pressure to synchronizing shaft 4, synchronizing shaft 4 can switch between corotation and reversal with higher frequency, and slew velocity is also higher, this just makes synchronizing shaft 4 can take place comparatively violent phenomenon of rocking, produce great noise, it is impaired to lead to synchronizing shaft 4 and the junction of hydro-cylinder 2, can collide with slider 2 even when serious, the bender fault rate rises. And if the working frequency of the bending machine is reduced, the working efficiency of the bending machine is reduced.

In view of the above problem, the present embodiment takes a measure of mounting the fixing arm 7 on the synchronizing shaft 5. Specifically, as shown in fig. 2 and 3, the fixing arm 7 includes a connecting member 73 and a fixing member 74. One end of the connecting piece 73 is fixedly connected with the frame 1, the other end of the connecting piece is close to the synchronizing shaft 5 and is fixedly provided with a fixing piece 74, a through hole 71 is formed in the fixing piece 74, and the diameter of the through hole 71 is slightly larger than that of the synchronizing shaft 5. When the synchronous shaft 5 is installed, the synchronous shaft passes through the through hole 71 and is respectively connected with the two oil cylinders 2. Through the measure, when the bending machine works at a high speed, the synchronizing shaft 4 can be well limited in the through hole 71, the shaking amplitude of the synchronizing shaft 5 is reduced, the synchronizing shaft 4 is prevented from colliding with the sliding block 2 or the rack 1, the damage degree of the joint of the synchronizing shaft 5 and the oil cylinder 2 is reduced, and the possibility of the bending machine breaking down is reduced.

Further, this embodiment is equipped with one deck rubber packing ring 72 along its circumference on the inside wall of through-hole 71, and when synchronizing shaft 4 rocked and through-hole 71 inner wall bump, rubber packing ring 72 can play the cushioning effect, and protection synchronizing shaft 5 can not be because of too big and impaired with the impact of through-hole 71 inner wall.

As shown in fig. 4, the drive mechanism 6 includes a cylinder motor 61, two sprockets, and a chain 62. Wherein, hydro-cylinder motor 61 installs in frame 1, and one of them sprocket cup joints to be fixed on synchronizing shaft 5, and another sprocket cup joints to be fixed on the output shaft of hydro-cylinder motor 61, and two sprockets pass through chain 62 and connect. When the oil cylinder motor 61 works, the output shaft rotates to drive the two chain wheels to rotate, the chain wheels drive the synchronizing shaft 4 to rotate, so that the oil cylinder 2 is controlled to work, the oil cylinder motor 61 rotates forwards and backwards to respectively control oil inlet and oil outlet of the oil cylinder 2, and the sliding block 3 is controlled to move up and down.

In addition, as shown in fig. 5 to 7, the bending machine of the present embodiment further includes a back stop device 8 and a lateral adjusting device 9. The working surface of the rear material blocking device 8 is at the same height as the workbench 4, and comprises a cross beam 81, a mounting plate 82 and a blocking finger 83. Wherein, the mounting plate 82 is installed on the upper end surface of the beam 81, and the stop finger 83 is installed on the mounting plate 12 and can move along the length direction of the mounting plate 82. Specifically, the mounting plate 82 is provided with a finger blocking guide rail along the length direction thereof, the lower end of the finger blocking 83 is provided with a finger blocking slider matched with the finger blocking guide rail, and the finger blocking 83 is arranged on the finger blocking guide rail through the finger blocking slider. A finger blocking motor 86 fixedly connected with the finger blocking 83 is arranged on one side of the mounting plate 82, a gear 87 is arranged on an output shaft of the finger blocking motor 86, and a rack 88 matched with the gear 87 and extending along the length direction of the mounting plate 82 is arranged on the long side of the mounting plate 82 on the same side with the finger blocking motor 86. When the finger blocking motor 86 works, the output shaft of the finger blocking motor 86 rotates to enable the gear 87 to move on the rack 88, so that the finger blocking motor 86 is driven to move along the direction of the rack 88, and the finger blocking motor 86 drives the finger blocking 83 to move along the direction of the finger blocking guide rail, so that the bending positioning of a workpiece to be bent is realized.

In order to enable the rear material blocking device 8 to more accurately position the workpiece in a bending mode, in this embodiment, on the mounting plate 82, a plurality of adjusting screw holes 83 penetrating through the mounting plate 82 are formed in the length direction of the mounting plate 82, when the local height of the rear material blocking device 8 is deviated, when the working surface of the whole rear material blocking device 8 is not parallel to the workbench 4 of the bending machine, the mounting plate 82 and the beam 81 can be loosened firstly, then screws in the adjusting screw holes 84 are rotated, the length of the screws extending out of the lower portion of the mounting plate 82 is adjusted, and the beam 81 is propped against the screw, so that the height of the mounting plate 82 is adjusted, the working surface of the rear material blocking device 8 is kept parallel to the workbench 4 of the bending machine, and then the mounting plate 82 and the beam 81 are. Through the mode, the local height of the rear material blocking device 8 can be adjusted, so that the working surface of the rear material blocking device 8 is flush with the workbench 4 of the bending machine, and the bending precision of the bending machine is improved.

In order to prevent the screws in the adjusting screw holes 84 from loosening, the present embodiment is provided with a through hole on the mounting plate 82 around each adjusting screw hole 84, the connecting line of the through hole and the corresponding adjusting screw hole 84 is kept parallel to the width direction of the mounting plate 82, and correspondingly, a fixing screw hole corresponding to the through hole is provided at the opposite position of the cross beam 81. After the local height of the mounting plate 82 is adjusted by adjusting the screws in the screw holes 84, the mounting plate 82 and the cross member 81 are fixed by the fixing bolts 85 inserted into the through holes and the fixing screw holes. And a through hole is arranged around each adjusting screw hole 84, so that the screws in the adjusting screw holes 84 can be effectively prevented from loosening, and the mounting plate 82 and the cross beam 81 are connected more firmly. The through-holes, fixing screw holes and fixing bolts 85 together constitute fixing parts of the cross member 81 and the mounting plate 82.

The transverse adjusting device 9 comprises a screw nut mechanism 91 and a driving guide rail 92 which are arranged along the width direction of a cross beam 81 of the rear material blocking device 8, the cross beam 81 is fixedly connected with a nut of the screw nut mechanism 91, a driving slide block matched with the driving guide rail 92 is arranged on the cross beam 18, the screw nut mechanism 91 is driven by a motor, and when the motor rotates, the nut moves along a screw to drive the rear material blocking device 8 to move. The driving guide rail 92 and the driving slider improve the moving direction accuracy of the rear material blocking device 8. In this embodiment, the front and rear ends of the cross beam 81 are respectively provided with a transverse adjusting device 9, and each transverse adjusting device 9 has two driving guide rails 92 symmetrically arranged on both sides of the screw nut mechanism 91.

In summary, the hydraulic bending machine of this embodiment can reduce the rocking phenomenon of the synchronizing shaft of the bending machine while enabling the bending machine to work at a high speed, and prevent the synchronizing shaft and the joint of the synchronizing shaft and the oil cylinder from being damaged.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic bending machine, includes frame (1), set up a pair of hydro-cylinder (2) in frame (1) both sides respectively, slider (3) be connected with the piston rod of hydro-cylinder (2), workstation (4) of slider (3) below, synchronous axle (5) of connecting two hydro-cylinders (2) respectively and be used for controlling synchronous axle (5) pivoted actuating mechanism (6), its characterized in that: also comprises a fixed arm (7); one end of the fixed arm (7) is fixedly connected to the rack (1), and the other end of the fixed arm is provided with a through hole (71); the synchronizing shaft (5) passes through the through hole (71).

2. A hydraulic bending machine according to claim 1, wherein: and a layer of rubber gasket (72) is arranged on the inner side wall of the through hole (71).

3. A hydraulic bending machine according to claim 2, wherein: the fixing arm (7) comprises a connecting piece (73) and a fixing piece (74); one end of the connecting piece (73) is fixedly connected with the rack (1), and the other end of the connecting piece is fixedly provided with a fixing piece (74); the through hole (71) is formed in the fixing piece (74).

4. A hydraulic bending machine according to claim 1, wherein: the driving mechanism (6) comprises an oil cylinder motor (61), two chain wheels and a chain (62); the oil cylinder motor (61) is installed on the rack (1), one chain wheel is fixed on the synchronizing shaft (5), the other chain wheel is fixed on an output shaft of the oil cylinder motor (61), and the two chain wheels are connected through a chain (62).

5. A hydraulic bending machine according to any one of claims 1-4, wherein: the rear material blocking device (8) is positioned at the same height with the workbench (4); rear stock stop (8) are including crossbeam (81), mounting panel (82) and fixed part, be equipped with on mounting panel (82) keep off that the length direction of following mounting panel (82) removed indicate (83) and along a plurality of regulation screw (84) that run through mounting panel (82) that the length direction of mounting panel (82) was arranged, fixed part is used for connecting crossbeam (81) and mounting panel (82) are detachable and fixed.

6. A hydraulic bending machine according to claim 5, wherein: the fixing component comprises a through hole arranged on the mounting plate (82), a fixing screw hole arranged on the cross beam (81) and a fixing bolt (85), and the cross beam (81) is connected with the mounting plate (82) through the through hole penetrating through the mounting plate (82) and the fixing bolt (85) of the fixing screw hole.

7. The hydraulic bending machine according to claim 6, wherein: the adjustment screw holes (84) have two rows which are symmetrically arranged along the length direction of the mounting plate (82).

8. The hydraulic bending machine according to claim 7, wherein: also comprises a transverse adjusting device (9); the transverse adjusting device (9) comprises a lead screw nut mechanism (91), a driving guide rail (92) and a driving slide block which are matched; the screw nut mechanism (91) is arranged along the width direction of the cross beam (81), the driving guide rail (92) is parallel to a screw of the screw nut mechanism (91), and the driving slide block is fixedly connected with the rear material blocking device (8).

9. The hydraulic bending machine according to claim 8, wherein: the two driving guide rails (92) are symmetrically arranged on two sides of a lead screw of the lead screw nut mechanism (91).