CN114192637A

CN114192637A - Sheet metal bending system of electric cabinet without welding seams and working method

Info

Publication number: CN114192637A
Application number: CN202111557987.3A
Authority: CN
Inventors: 吴福君
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-03-18

Abstract

The invention discloses a sheet metal bending system of a weldless electrical cabinet, which comprises a circular metal thin wall waiting for bending and a bending device, wherein the circular metal thin wall can be arranged on the bending device, the bending device can bend the circular metal thin wall into a closed-loop square cabinet wall, and the square cabinet wall sequentially comprises a first round angle, a first straight line edge, a second round angle, a second straight line edge, a third round angle, a third straight line edge, a fourth round angle and a fourth straight line edge along the clockwise direction of the outline; the bending device has a simple structure, and can directly and integrally bend the circular metal thin wall into a closed-loop square cabinet wall.

Description

Sheet metal bending system of electric cabinet without welding seams and working method

Technical Field

The invention belongs to the field of a cabinet wall bending process of an electrical cabinet.

Background

If the cabinet wall of the electrical cabinet adopts a square cabinet wall structure without welding seams, the cabinet wall has great visual impact on appearance, and has no redundant welding procedures, and the processing process has great advantages in environmental protection and cost because no welding procedure is adopted; the scheme is a bending forming device designed for the square machine box wall without the welding seam.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a sheet metal bending system and a working method of a weldless electrical cabinet, which can directly and integrally bend a circular metal thin wall into a closed-loop square electrical cabinet wall.

The technical scheme is as follows: in order to achieve the purpose, the sheet metal bending system of the electric cabinet without the welding seam comprises a circular thin metal wall to be bent and a bending device, wherein the circular thin metal wall can be installed on the bending device, the bending device can bend the circular thin metal wall into a closed-loop square cabinet wall, and the square cabinet wall sequentially comprises a first round angle, a first straight line side, a second round angle, a second straight line side, a third round angle, a third straight line side, a fourth round angle and a fourth straight line side along the clockwise direction of the outline.

Further, the bending device comprises an inner constraint mechanism and an outer constraint mechanism; when the circular ring metal thin wall is installed on the bending device, the inner constraint mechanism is within the enclosing range of the circular ring metal thin wall, and the outer constraint mechanism is outside the enclosing range of the circular ring metal thin wall.

Further, the external restraint mechanism comprises a horizontal upper restraint plate, a vertical right restraint plate, a horizontal lower restraint plate and a vertical left restraint plate; the left end of the upper restraint plate is integrally connected with a first arc restraint plate, the upper end of the right restraint plate is integrally connected with a second arc restraint plate, the right end of the lower restraint plate is integrally connected with a third arc restraint plate, and the lower end of the left restraint plate is integrally connected with a fourth arc restraint plate; the upper and lower restraint plates can respectively move in the vertical direction; the left restraint plate and the right restraint plate can respectively move along the left and right directions;

when a counterclockwise end of the first arc restraining plate, a counterclockwise end of the second arc restraining plate, a counterclockwise end of the third arc restraining plate and a counterclockwise end of the fourth arc restraining plate respectively contact with the upper end of the left restraining plate, the right end of the upper restraining plate, the lower end of the right restraining plate and the left end of the lower restraining plate, the first arc restraining plate, the second arc restraining plate, the third arc restraining plate, the fourth arc restraining plate, the left restraining plate, the upper restraining plate, the right restraining plate and the lower restraining plate together form a closed-loop square restraining frame;

after the circular metal thin wall is bent into a closed-loop square machine box wall, the outer wall surfaces of a first circular bead, a first straight line edge, a second circular bead, a second straight line edge, a third circular bead, a third straight line edge, a fourth circular bead and a fourth straight line edge of the square machine box wall are respectively attached to the inner wall surfaces of a first circular arc restraint plate, an upper restraint plate, a second circular arc restraint plate, a right restraint plate, a third circular arc restraint plate, a lower restraint plate, a fourth circular arc restraint plate and a left restraint plate.

The hydraulic cylinder support is characterized by further comprising a frame type support, wherein a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder are fixedly mounted on the frame type support respectively; the first hydraulic telescopic rod of the first hydraulic cylinder extends downwards and is fixedly connected with the upper restraint plate, the second hydraulic telescopic rod of the second hydraulic cylinder extends leftwards and is fixedly connected with the right restraint plate, the third hydraulic telescopic rod of the third hydraulic cylinder extends upwards and is fixedly connected with the lower restraint plate, and the fourth hydraulic telescopic rod of the fourth hydraulic cylinder extends rightwards and is fixedly connected with the left restraint plate.

Furthermore, the internal restraint mechanism comprises a strip-shaped movable restraint plate, and a first fillet restraint roller and a second fillet restraint roller are respectively arranged at two ends of the strip-shaped movable restraint plate; the upper surface and the lower surface of the strip-shaped movable restraining plate are respectively a first restraining plane and a second restraining plane; the first fillet constraint roller and the second fillet constraint roller are tangent to a first constraint plane and a second constraint plane, and the outer diameters of the first fillet constraint roller and the second fillet constraint roller are consistent with the inner diameters of the first fillet, the second fillet, the third fillet and the fourth fillet;

the first fillet constraint roller and the second fillet constraint roller are respectively connected to the first fixing shaft and the second fixing shaft in a rotating way through a first bearing and a second bearing; the first fixing shaft and the second fixing shaft are fixedly connected to the side wall of the strip-shaped movable restraint plate through a first fixing piece and a second fixing piece respectively; a rocker arm is arranged on one side of the strip-shaped movable restraining plate in parallel, and the middle part of the rocker arm is fixedly connected with one side of the strip-shaped movable restraining plate through a fixed seat; a first transformation shaft hole and a second transformation shaft hole are respectively and vertically arranged at two ends of the rocker arm; the first transformation shaft hole and the second transformation shaft hole are coaxial with the first fillet constraint idler wheel and the second fillet constraint idler wheel respectively;

the telescopic device also comprises a first telescopic device, a second telescopic device, a third telescopic device and a fourth telescopic device;

the first telescopic device can extend out of the first telescopic shaft, the second telescopic device can extend out of the second telescopic shaft, the third telescopic device can extend out of the third telescopic shaft, and the fourth telescopic device can extend out of the fourth telescopic shaft;

when the first arc restraining plate, the second arc restraining plate, the third arc restraining plate, the fourth arc restraining plate, the left restraining plate, the upper restraining plate, the right restraining plate and the lower restraining plate jointly form a closed-loop square restraining frame, the first telescopic shaft, the second telescopic shaft, the third telescopic shaft and the fourth telescopic shaft are coaxial with the first arc restraining plate, the second arc restraining plate, the third arc restraining plate and the fourth arc restraining plate respectively;

when the first telescopic shaft and the second telescopic shaft are coaxially and movably inserted into the second transformation shaft hole and the first transformation shaft hole respectively, the strip-shaped movable restraining plate is parallel to the position right below the upper restraining plate.

The linear motor is fixedly arranged on the linear motor support, and a linear telescopic rod of the horizontal linear motor is parallel to the axial lines of the first telescopic shaft/the second telescopic shaft/the third telescopic shaft/the fourth telescopic shaft; the end of a linear telescopic rod of the horizontal linear motor is fixed with a telescopic device mounting support, and the first telescopic device, the second telescopic device, the third telescopic device and the fourth telescopic device are all fixedly mounted on the telescopic device mounting support.

Furthermore, the first fixed shaft is coaxially connected with a first transmission gear through a first clutch in a transmission manner, the second fixed shaft is coaxially connected with a second transmission gear through a second clutch in a transmission manner, a driving gear is arranged between the first transmission gear and the second transmission gear, the driving gear is simultaneously meshed with the first transmission gear and the second transmission gear, the electric motor further comprises a motor, an output shaft of the motor is coaxially connected with the driving gear through a connecting arm, guide hole sliders are fixedly arranged on two sides of a shell of the motor, vertical guide holes are formed in the guide hole sliders, guide posts slide in the guide holes, and a driving device can drive the guide hole sliders to move up and down along the guide posts; the lower end of the guide pillar is fixed on a translation sliding block, the translation sliding block is arranged on a horizontal guide rail extending along the left-right direction, and a driving mechanism can drive the translation sliding block to slide along the horizontal guide rail; the horizontal left-right displacement of the translation sliding block is matched with the up-down displacement of the guide hole sliding block, so that the motor and the driving gear can move up, down, left and right randomly.

The overall method comprises the following steps:

preparing a metal pipe body, and then cutting the metal pipe body into a plurality of circular metal thin walls; and then, mounting a circular metal thin wall on the bending device, wherein the bending device bends the circular metal thin wall into a closed-loop square cabinet wall.

The detailed working method of the scheme is as follows:

position changing method of driving gear:

because the horizontal left and right displacement of the translation sliding block is matched with the up and down displacement of the guide hole sliding block, the motor and the driving gear can do random up and down left and right movement; based on the principle, in the running process of the device, the horizontal left-right displacement of the translation sliding block and the vertical displacement of the guide hole sliding block are controlled in real time, so that the driving gear is subjected to position change in real time, and under any condition in the running process of the device, the driving gear is always positioned between the first transmission gear and the second transmission gear, and the first transmission gear and the second transmission gear are always in a state of being meshed with the driving gear; and the first transmission gear and the second transmission gear are always in a state of being meshed with the driving gear in the subsequent working process;

the specific working method comprises the following steps:

step one, preparing a metal pipe body, and then cutting the metal pipe body into a plurality of circular ring metal thin walls;

secondly, the strip-shaped movable restraint plate is parallel to the position right below the upper restraint plate in an initial state, and the first clutch and the second clutch are in an occlusion state, so that the first transmission gear and the second transmission gear cannot freely rotate along the axis of the first transmission gear and the second transmission gear; in the initial state, the first hydraulic telescopic rod, the second hydraulic telescopic rod, the third hydraulic telescopic rod and the fourth hydraulic telescopic rod are all in a retracted state, and the linear telescopic rods are also in a retracted state;

preparing a circular metal thin wall, and sleeving the circular metal thin wall outside a strip-shaped movable constraint plate, wherein under the action of gravity, a first circular angle constraint roller and a second circular angle constraint roller at two ends of the strip-shaped movable constraint plate are respectively tangent to the inner wall of the circular metal thin wall and upwards support the circular metal thin wall, and at the moment, the upper constraint plate, the right constraint plate, the lower constraint plate and the left constraint plate are positioned at the upper, lower, left and right peripheries of the circular metal thin wall; the installation of the ring metal thin wall is completed in this step;

step four, controlling the first telescopic shaft and the second telescopic shaft to extend out, and then controlling the linear telescopic rod to gradually extend out until the first telescopic shaft and the second telescopic shaft are movably inserted into the second transformation shaft hole and the first transformation shaft hole respectively;

then the first hydraulic telescopic rod is controlled to extend downwards, so that the upper restraint plate downwards supports against a section of circular metal thin wall on the upper side of the strip-shaped movable restraint plate, the section of circular metal thin wall on the upper side of the strip-shaped movable restraint plate is finally tightly clamped between the strip-shaped movable restraint plate and the upper restraint plate along with the continuous downward movement of the upper restraint plate and is plastically deformed into a first straight line edge, and meanwhile, under the restraint of the second fillet restraint roller and the first circular arc restraint plate, a section of circular metal thin wall between the second fillet restraint roller and the first circular arc restraint plate is plastically deformed into a first fillet;

step five, independently controlling the second telescopic shaft to retract, so that the first conversion shaft hole is separated from the second telescopic shaft, and the first telescopic shaft is still in the second conversion shaft hole; controlling the second clutch to be in a disengaged state from an engaged state, maintaining the first clutch to be engaged, so that the first transmission gear can rotate freely, the first transmission gear and the first fixed shaft are still in a synchronous state under the action of the first clutch, controlling the driving gear to rotate slowly and clockwise through the motor, and finally driving the bar-shaped movable restraining plate to rotate clockwise along the axis of the first telescopic shaft by the clockwise rotation of the driving gear according to the transmission relation; at the moment, a fourth telescopic shaft is controlled to extend out and is inserted into the first conversion shaft hole coaxially, so that the strip-shaped movable restraining plate is fixed, then a fourth hydraulic telescopic rod is controlled to extend out rightwards, the left restraining plate is pressed against a section of circular metal thin wall on the left side of the strip-shaped movable restraining plate rightwards, along with the continuous rightward movement of the left restraining plate, a section of circular metal thin wall on the left side of the strip-shaped movable restraining plate is finally and tightly clamped between the strip-shaped movable restraining plate and the left restraining plate and is plastically deformed into a fourth straight line edge, and meanwhile, under the joint restraint of the first fillet restraining roller and the fourth circular metal restraining plate, a section of circular metal thin wall between the first fillet restraining roller and the fourth circular metal restraining plate is plastically deformed into a fourth fillet;

to this end, a first straight line side, a first round angle, a fourth straight line side and a fourth round angle of a closed-loop square chassis wall are molded, and a second straight line side, a second round angle, a third straight line side and a third round angle are not molded;

step six, on the basis of the transmission analysis, step five, the second clutch is controlled to be changed from a disengaged state to an engaged state, the first clutch is changed from the engaged state to the disengaged state, the first telescopic shaft retracts to be separated from the second conversion shaft hole, the driving gear is controlled to slowly rotate clockwise, the strip-shaped movable restraining plate is enabled to rotate clockwise along the axis of the fourth telescopic shaft, then the third telescopic shaft extends out to be inserted into the second conversion shaft hole, then the lower restraining plate is enabled to ascend, a section of circular metal thin wall between the strip-shaped movable restraining plate and the lower restraining plate is enabled to be plastically deformed into a third straight line edge, and meanwhile, a third circular angle is correspondingly formed;

step seven, on the basis of the transmission analysis in the step six, the second clutch is controlled to be changed from the occlusion state to the disengagement state, the first clutch is changed from the disengagement state to the occlusion state, the fourth telescopic shaft is retracted to be separated from the first conversion shaft hole, the driving gear is controlled to slowly rotate clockwise, the strip-shaped movable restraining plate is enabled to rotate clockwise along the axis of the third telescopic shaft, then the second telescopic shaft extends out to be inserted into the first conversion shaft hole, then the right restraining plate moves leftwards, a section of circular metal thin wall between the strip-shaped movable restraining plate and the right restraining plate is enabled to be plastically deformed into a second straight line edge, and meanwhile, a second circular angle is correspondingly formed;

at this moment, the wall of a closed-loop square chassis is completely molded, and a first arc restraining plate, a second arc restraining plate, a third arc restraining plate, a fourth arc restraining plate, a left restraining plate, an upper restraining plate, a right restraining plate and a lower restraining plate just form a closed-loop square restraining frame together; after the circular metal thin wall is bent into a closed-loop square machine box wall, the outer wall surfaces of a first fillet, a first straight line edge, a second fillet, a second straight line edge, a third fillet, a third straight line edge, a fourth fillet and a fourth straight line edge of the square machine box wall are respectively attached to the inner wall surfaces of a first circular arc restraint plate, an upper restraint plate, a second circular arc restraint plate, a right restraint plate, a third circular arc restraint plate, a lower restraint plate, a fourth circular arc restraint plate and a left restraint plate; and finally, recovering to the state of step two, and then taking down the formed square cabinet wall.

Has the advantages that: the invention has simple structure, the bending device can directly and integrally bend the circular metal thin wall into a closed-loop square cabinet wall, the closed-loop square cabinet wall without welding seams has great visual impact feeling in beauty, and has no redundant welding procedures, and the processing process has great advantages in environmental protection and cost because of no welding procedure.

Drawings

FIG. 1 is a disassembled structure of a case;

FIG. 2 is a schematic structural view of a metal pipe body cut into a plurality of circular thin metal walls;

FIG. 3 is a schematic view of a ring metal thin wall structure waiting for bending forming;

FIG. 4 is a schematic structural view of a square cabinet wall;

FIG. 5 is an overall side view of the present apparatus;

FIG. 6 is a schematic view of a first, second, third and fourth retractor being fixedly mounted on the retractor mounting bracket;

FIG. 7 is a diagram illustrating the state at the end of step two;

FIG. 8 is another perspective view of FIG. 7;

FIG. 9 is an enlarged schematic view taken at 000 of FIG. 8;

FIG. 10 is a cross-sectional view of "FIG. 9";

FIG. 11 is a schematic view of the state at the end of "step three";

fig. 12 is a schematic view illustrating that the first telescopic shaft and the second telescopic shaft extend out in the step four, and then the linear telescopic rod is controlled to extend out gradually until the first telescopic shaft and the second telescopic shaft are movably inserted into the second transformation shaft hole and the first transformation shaft hole respectively;

FIG. 13 is a front view of FIG. 12;

FIG. 14 is an enlarged view of the middle of FIG. 13;

FIG. 15 is a schematic view of the apparatus when a closed-loop square cabinet wall is fully formed;

FIG. 16 is an enlarged partial view of FIG. 15;

FIG. 17 is a front view of "FIG. 16";

FIG. 18 is a disassembled exploded view of "FIG. 16".

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The sheet metal bending system of the weldless electrical cabinet shown in the attached drawings 1 to 18 comprises a circular ring metal thin wall 3 waiting for bending and a bending device, wherein the circular ring metal thin wall 3 can be installed on the bending device, the bending device can bend the circular ring metal thin wall 3 into a closed-loop square cabinet wall 1, and the square cabinet wall 1 sequentially comprises a first fillet 1.1, a first straight line edge 1.2, a second fillet 1.3, a second straight line edge 1.4, a third fillet 1.5, a third straight line edge 1.6, a fourth fillet 1.7 and a fourth straight line edge 1.8 along the clockwise direction of the outline.

The bending device comprises an inner constraint mechanism and an outer constraint mechanism; when the circular ring metal thin wall 3 is installed on the bending device, the inner constraint mechanism is in the enclosing range of the circular ring metal thin wall 3, and the outer constraint mechanism is outside the enclosing range of the circular ring metal thin wall 3.

The outer constraint mechanism comprises a horizontal upper constraint plate 20.2, a vertical right constraint plate 20.4, a horizontal lower constraint plate 20.6 and a vertical left constraint plate 20.8; the left end of the upper restraint plate 20.2 is integrally connected with a first arc restraint plate 20.1, the upper end of the right restraint plate 20.4 is integrally connected with a second arc restraint plate 20.3, the right end of the lower restraint plate 20.6 is integrally connected with a third arc restraint plate 20.5, and the lower end of the left restraint plate 20.8 is integrally connected with a fourth arc restraint plate 20.7; the upper restraint plate 20.2 and the lower restraint plate 20.6 can respectively move in the vertical direction; the left restraint plate 20.8 and the right restraint plate 20.4 can respectively move along the left and right directions;

when the counterclockwise end of the first circular arc restraining plate 20.1, the counterclockwise end of the second circular arc restraining plate 20.3, the counterclockwise end of the third circular arc restraining plate 20.5 and the counterclockwise end of the fourth circular arc restraining plate 20.7 respectively contact the upper end of the left restraining plate 20.8, the right end of the upper restraining plate 20.2, the lower end of the right restraining plate 20.4 and the left end of the lower restraining plate 20.6, the first circular arc restraining plate 20.1, the second circular arc restraining plate 20.3, the third circular arc restraining plate 20.5, the fourth circular arc restraining plate 20.7, the left restraining plate 20.8, the upper restraining plate 20.2, the right restraining plate 20.4 and the lower restraining plate 20.6 together form a closed-loop square restraining frame 20;

after the circular thin metal wall 3 is bent into the closed-loop square case wall 1, the outer wall surfaces of a first fillet 1.1, a first straight line edge 1.2, a second fillet 1.3, a second straight line edge 1.4, a third fillet 1.5, a third straight line edge 1.6, a fourth fillet 1.7 and a fourth straight line edge 1.8 of the square case wall 1 are respectively attached to the inner wall surfaces of a first circular arc restraining plate 20.1, an upper restraining plate 20.2, a second circular arc restraining plate 20.3, a right restraining plate 20.4, a third circular arc restraining plate 20.5, a lower restraining plate 20.6, a fourth circular arc restraining plate 20.7 and a left restraining plate 20.8.

The hydraulic support is characterized by further comprising a frame type support 5, wherein a first hydraulic cylinder 21.1, a second hydraulic cylinder 21.2, a third hydraulic cylinder 21.3 and a fourth hydraulic cylinder 21.4 are fixedly mounted on the frame type support 5 respectively; the first hydraulic telescopic rod 22.1 of the first hydraulic cylinder 21.1 extends downwards and is fixedly connected with the upper restraint plate 20.2, the second hydraulic telescopic rod 22.2 of the second hydraulic cylinder 21.2 extends leftwards and is fixedly connected with the right restraint plate 20.4, the third hydraulic telescopic rod 22.3 of the third hydraulic cylinder 21.3 extends upwards and is fixedly connected with the lower restraint plate 20.6, and the fourth hydraulic telescopic rod 22.4 of the fourth hydraulic cylinder 21.4 extends rightwards and is fixedly connected with the left restraint plate 20.8.

The inner constraint mechanism comprises a strip-shaped movable constraint plate 10, and a first fillet constraint idler wheel 16 and a second fillet constraint idler wheel 15 are respectively arranged at two ends of the strip-shaped movable constraint plate 10; the upper surface and the lower surface of the strip-shaped movable restraint plate 10 are respectively a first restraint plane 10.1 and a second restraint plane 10.2; the first fillet constraint roller 16 and the second fillet constraint roller 15 are tangent to the first constraint plane 10.1 and the second constraint plane 10.2, and the outer diameters of the first fillet constraint roller 16 and the second fillet constraint roller 15 are consistent with the inner diameters of the first fillet 1.1, the second fillet 1.3, the third fillet 1.5 and the fourth fillet 1.7;

the first and second round

angle restricting rollers

16 and 15 are respectively rotatably connected to the first and

second fixing shafts

36 and 27 through the first and

second bearings

37 and 26; the first fixing shaft 36 and the second fixing shaft 27 are fixedly connected to the side wall of the strip-shaped movable restraining plate 10 through a first fixing piece 38 and a second fixing piece 39 respectively; a rocker arm 12 is arranged on one side of the strip-shaped movable restraint plate 10 in parallel, and the middle part of the rocker arm 12 is fixedly connected with one side of the strip-shaped movable restraint plate 10 through a fixed seat 11; a first transformation shaft hole 14 and a second transformation shaft hole 13 are respectively vertically penetrated through two ends of the rocker arm 12; the first transformation shaft hole 14 and the second transformation shaft hole 13 are coaxial with the first fillet constraint roller 16 and the second fillet constraint roller 15 respectively;

also comprises a first expansion piece 18.1, a second expansion piece 18.2, a third expansion piece 18.3 and a fourth expansion piece 18.4;

the first telescopic device 18.1 can extend out of the first telescopic shaft 19.1, the second telescopic device 18.2 can extend out of the second telescopic shaft 19.2, the third telescopic device 18.3 can extend out of the third telescopic shaft 19.3, and the fourth telescopic device 18.4 can extend out of the fourth telescopic shaft 19.4;

when the first arc restraining plate 20.1, the second arc restraining plate 20.3, the third arc restraining plate 20.5, the fourth arc restraining plate 20.7, the left restraining plate 20.8, the upper restraining plate 20.2, the right restraining plate 20.4 and the lower restraining plate 20.6 jointly form a closed-loop square restraining frame 20, the first telescopic shaft 19.1, the second telescopic shaft 19.2, the third telescopic shaft 19.3 and the fourth telescopic shaft 19.4 respectively have the same axial center with the first arc restraining plate 20.1, the second arc restraining plate 20.3, the third arc restraining plate 20.5 and the fourth arc restraining plate 20.7;

when the first telescopic shaft 19.1 and the second telescopic shaft 19.2 are coaxially and movably inserted into the second transformation shaft hole 13 and the first transformation shaft hole 14 respectively, the strip-shaped movable restraining plate 10 is parallel to the position right below the upper restraining plate 20.2.

The device also comprises a horizontal linear motor 7 fixedly arranged on the linear motor bracket 6, wherein a linear telescopic rod 8 of the horizontal linear motor 7 is parallel to the axial lines of the first telescopic shaft 19.1, the second telescopic shaft 19.2, the third telescopic shaft 19.3 and the fourth telescopic shaft 19.4; the tail end of a linear telescopic rod 8 of the horizontal linear motor 7 is fixed with a telescopic device mounting bracket 17, and a first telescopic device 18.1, a second telescopic device 18.2, a third telescopic device 18.3 and a fourth telescopic device 18.4 are all fixedly mounted on the telescopic device mounting bracket 17.

The first fixed shaft 36 is coaxially connected with a first transmission gear 35 in a transmission way through a first clutch 34, the second fixed shaft 27 is coaxially connected with a second transmission gear 28 in a transmission way through a second clutch 29, a driving gear 24 is arranged between the first transmission gear 35 and the second transmission gear 28, the driving gear 24 is simultaneously meshed with the first transmission gear 35 and the second transmission gear 28, the electric motor 31 also comprises a motor 31, an output shaft 25 of the motor 31 is coaxially connected with the driving gear 24 through a connecting arm 30, guide hole sliders 32 are fixedly arranged on two sides of a shell of the motor 31, vertical guide holes 33 are formed in the guide hole sliders 32, guide posts 40 penetrate through the guide holes 33 in a sliding way, and a driving device can drive the guide hole sliders 32 to move up and down along the guide posts 40; the lower end of the guide post 40 is fixed on a translation sliding block 42, the translation sliding block 42 is installed on a horizontal guide rail 41 extending along the left-right direction, and a driving mechanism can drive the translation sliding block 42 to slide along the horizontal guide rail 41; the horizontal left and right displacement of the translation sliding block 42 is matched with the up and down displacement of the guide hole sliding block 32, so that the motor 31 and the driving gear 24 can move up, down, left and right arbitrarily.

Overall method

Preparing a metal pipe body 9, and then cutting the metal pipe body 9 into a plurality of circular thin metal walls 3; then, a circular metal thin wall 3 is installed on a bending device, and the bending device bends the circular metal thin wall 3 into a closed-loop square cabinet wall 1.

Detailed working method of scheme

The working method of the sheet metal bending system of the electric cabinet without the welding seam comprises the following steps:

position changing method of the drive gear 24:

because the horizontal left and right displacement of the translation sliding block 42 is matched with the up and down displacement of the guide hole sliding block 32, the motor 31 and the driving gear 24 can do random up and down left and right movement; based on the principle, in the running process of the device, the horizontal left-right displacement of the translation sliding block 42 and the vertical displacement of the guide hole sliding block 32 are controlled in real time, so that the driving gear 24 is changed in position in real time, and under any condition in the running process of the device, the driving gear 24 is always positioned between the first transmission gear 35 and the second transmission gear 28, and the first transmission gear 35 and the second transmission gear 28 are always in a state of being meshed with the driving gear 24; and the first transmission gear 35 and the second transmission gear 28 are always in a state of being meshed with the driving gear 24 in the subsequent working process;

the specific working method comprises the following steps:

step one, preparing a metal pipe body 9, and then cutting the metal pipe body 9 into a plurality of circular thin metal walls 3 (as shown in figure 2);

step two, the strip-shaped movable restraint plate 10 is parallel to the position right below the upper restraint plate 20.2 in the initial state, and the first clutch 34 and the second clutch 29 are in an occlusion state, so that the first transmission gear 35 and the second transmission gear 28 cannot freely rotate along the axes of the first transmission gear and the second transmission gear; in an initial state, the first hydraulic telescopic rod 22.1, the second hydraulic telescopic rod 22.2, the third hydraulic telescopic rod 22.3 and the fourth hydraulic telescopic rod 22.4 are all in a retracted state, and the linear telescopic rod 8 is also in a retracted state;

preparing a circular metal thin wall 3, and sleeving the circular metal thin wall 3 outside a strip-shaped movable constraint plate 10, wherein under the action of gravity, a first fillet constraint roller 16 and a second fillet constraint roller 15 at two ends of the strip-shaped movable constraint plate 10 are respectively tangent to the inner wall of the circular metal thin wall 3 and upwards support the circular metal thin wall 3, and at the moment, an upper constraint plate 20.2, a right constraint plate 20.4, a lower constraint plate 20.6 and a left constraint plate 20.8 are positioned at the upper, lower, left and right sides of the circular metal thin wall 3; the installation of the annular metal thin wall 3 is completed in this step;

step four, controlling the first telescopic shaft 19.1 and the second telescopic shaft 19.2 to extend out, and then controlling the linear telescopic rod 8 to gradually extend out until the first telescopic shaft 19.1 and the second telescopic shaft 19.2 are movably inserted into the second conversion shaft hole 13 and the first conversion shaft hole 14 respectively;

then, the first hydraulic telescopic rod 22.1 is controlled to extend downwards, so that the upper restraint plate 20.2 downwards presses a section of the circular metal thin wall 3 on the upper side of the strip-shaped movable restraint plate 10, along with the continuous downward movement of the upper restraint plate 20.2, the section of the circular metal thin wall 3 on the upper side of the strip-shaped movable restraint plate 10 is finally tightly clamped between the strip-shaped movable restraint plate 10 and the upper restraint plate 20.2 and is plastically deformed into a first straight line edge 1.2, and meanwhile, under the common restraint of the second circular-angle restraint roller 15 and the first circular-arc restraint plate 20.1, the section of the circular metal thin wall 3 between the second circular-angle restraint roller 15 and the first circular-arc restraint plate 20.1 is plastically deformed into a first circular angle 1.1;

step five, independently controlling the second telescopic shaft 19.2 to retract, so that the first conversion shaft hole 14 is separated from the second telescopic shaft 19.2, and the first telescopic shaft 19.1 is still in the second conversion shaft hole 13; at this time, the second clutch 29 is controlled

When the meshed state is changed into the disengaged state, the first clutch 34 keeps meshed, so that the first transmission gear 35 can rotate freely, the first transmission gear 35 and the first fixed shaft 36 are still in a synchronous state under the action of the first clutch 34, then the driving gear 24 is controlled by the motor 31 to rotate slowly and clockwise, according to the transmission relation, the clockwise rotation of the driving gear 24 can finally drive the bar-shaped movable restraining plate 10 to rotate clockwise along the axis of the first telescopic shaft 19.1, and when the bar-shaped movable restraining plate 10 just rotates clockwise 90 degrees along the axis of the first telescopic shaft 19.1, the bar-shaped movable restraining plate 10 is changed from the original horizontal state into the vertical state; at this time, the fourth telescopic shaft 19.4 is controlled to extend out and coaxially inserted into the first conversion shaft hole 14, so that the strip-shaped movable restraint plate 10 is fixed, then the fourth hydraulic telescopic rod 22.4 is controlled to extend out rightwards, so that the left restraint plate 20.8 is rightwards pressed against a section of thin ring metal wall 3 on the left side of the strip-shaped movable restraint plate 10, along with the continuous rightward movement of the left restraint plate 20.8, the section of thin ring metal wall 3 on the left side of the strip-shaped movable restraint plate 10 is finally tightly clamped between the strip-shaped movable restraint plate 10 and the left restraint plate 20.8 and is plastically deformed into a fourth straight edge 1.8, and meanwhile, under the joint restraint of the first fillet restraint roller 16 and the fourth fillet restraint plate 20.7, the section of thin ring metal wall 3 between the first fillet restraint roller 16 and the fourth fillet restraint plate 20.7 is plastically deformed into a fourth fillet 1.1;

to this end, a first straight-line side 1.2, a first rounded corner 1.1, a fourth straight-line side 1.8 and a fourth rounded corner 1.1 of a closed-loop square cabinet wall 1 have been formed, and a second straight-line side 1.4, a second rounded corner 1.3, a third straight-line side 1.6 and a third rounded corner 1.5 have not been formed;

step six, on the basis of the transmission analysis in the step five, the second clutch 29 is controlled to be changed from a disengaged state to an engaged state, the first clutch 34 is changed from the engaged state to the disengaged state, the first telescopic shaft 19.1 is retracted to be disengaged from the second conversion shaft hole 13, the driving gear 24 is controlled to slowly rotate clockwise, the strip-shaped movable restraining plate 10 rotates 90 degrees clockwise along the axis of the fourth telescopic shaft 19.4, the third telescopic shaft 19.3 extends out to be inserted into the second conversion shaft hole 13, then the lower restraining plate 20.6 is lifted, a section of circular metal thin wall 3 between the strip-shaped movable restraining plate 10 and the lower restraining plate 20.6 is plastically deformed into a third straight edge 1.6, and meanwhile, a third circular angle 1.5 is correspondingly formed;

step seven, on the basis of the transmission analysis in the step six, the second clutch 29 is controlled to be changed from the occluded state to the disengaged state, the first clutch 34 is changed from the disengaged state to the occluded state, the fourth telescopic shaft 19.4 is retracted to be separated from the first conversion shaft hole 14, the driving gear 24 is controlled to slowly rotate clockwise, the strip-shaped movable restraining plate 10 rotates 90 degrees clockwise along the axis of the third telescopic shaft 19.3, the second telescopic shaft 19.2 extends out to be inserted into the first conversion shaft hole 14, the right restraining plate 20.4 moves leftwards, a section of circular ring metal thin wall 3 between the strip-shaped movable restraining plate 10 and the right restraining plate 20.4 is plastically deformed into a second straight line edge 1.4, and meanwhile, a second circular angle 1.3 is correspondingly formed;

to this end, a closed-loop square cabinet wall 1 is completely molded, and a first circular arc restraint plate 20.1, a second circular arc restraint plate 20.3, a third circular arc restraint plate 20.5, a fourth circular arc restraint plate 20.7, a left restraint plate 20.8, an upper restraint plate 20.2, a right restraint plate 20.4 and a lower restraint plate 20.6 just form a closed-loop square restraint frame 20 together; after the circular thin metal wall 3 is bent into the closed-loop square case wall 1, the outer wall surfaces of a first fillet 1.1, a first straight line edge 1.2, a second fillet 1.3, a second straight line edge 1.4, a third fillet 1.5, a third straight line edge 1.6, a fourth fillet 1.7 and a fourth straight line edge 1.8 of the square case wall 1 are respectively attached to the inner wall surfaces of a first circular arc restraining plate 20.1, an upper restraining plate 20.2, a second circular arc restraining plate 20.3, a right restraining plate 20.4, a third circular arc restraining plate 20.5, a lower restraining plate 20.6, a fourth circular arc restraining plate 20.7 and a left restraining plate 20.8; and finally, recovering to the state of step two, and then taking down the molded square cabinet wall 1.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. The sheet metal bending system of the electric cabinet without the welding seam comprises a circular thin metal wall (3) waiting for bending, and is characterized in that: the bending device is characterized by further comprising a bending device, the circular ring metal thin wall (3) can be installed on the bending device, the bending device can bend the circular ring metal thin wall (3) into a closed-loop square machine box wall (1), and the square machine box wall (1) is sequentially provided with a first round angle (1.1), a first straight line edge (1.2), a second round angle (1.3), a second straight line edge (1.4), a third round angle (1.5), a third straight line edge (1.6), a fourth round angle (1.7) and a fourth straight line edge (1.8) along the clockwise direction of the outline.

2. The sheet metal bending system of the weldless electrical cabinet according to claim 1, wherein: the bending device comprises an inner constraint mechanism and an outer constraint mechanism; when the circular thin metal wall (3) is installed on the bending device, the inner constraint mechanism is in the enclosing range of the circular thin metal wall (3), and the outer constraint mechanism is outside the enclosing range of the circular thin metal wall (3).

3. The sheet metal bending system of the weldless electrical cabinet according to claim 2, wherein: the outer constraint mechanism comprises a horizontal upper constraint plate (20.2), a vertical right constraint plate (20.4), a horizontal lower constraint plate (20.6) and a vertical left constraint plate (20.8); the left end of the upper restraint plate (20.2) is integrally connected with a first arc restraint plate (20.1), the upper end of the right restraint plate (20.4) is integrally connected with a second arc restraint plate (20.3), the right end of the lower restraint plate (20.6) is integrally connected with a third arc restraint plate (20.5), and the lower end of the left restraint plate (20.8) is integrally connected with a fourth arc restraint plate (20.7); the upper restraint plate (20.2) and the lower restraint plate (20.6) can respectively move in the vertical direction; the left restraint plate (20.8) and the right restraint plate (20.4) can respectively move along the left and right directions;

when the counterclockwise end of the first arc restraining plate (20.1), the counterclockwise end of the second arc restraining plate (20.3), the counterclockwise end of the third arc restraining plate (20.5) and the counterclockwise end of the fourth arc restraining plate (20.7) respectively contact the upper end of the left restraining plate (20.8), the right end of the upper restraining plate (20.2), the lower end of the right restraining plate (20.4) and the left end of the lower restraining plate (20.6), the first arc restraining plate (20.1), the second arc restraining plate (20.3), the third arc restraining plate (20.5), the fourth arc restraining plate (20.7), the left restraining plate (20.8), the upper restraining plate (20.2), the right restraining plate (20.4) and the lower restraining plate (20.6) jointly form a closed-loop square restraining frame (20);

after the circular metal thin wall (3) is bent into a closed-loop square machine box wall (1), the outer wall surfaces of a first circular arc restraining plate (20.1), an upper restraining plate (20.2), a second circular arc restraining plate (20.3), a right restraining plate (20.4), a third circular arc restraining plate (20.5), a lower restraining plate (20.6), a fourth circular arc restraining plate (20.7) and a left restraining plate (20.8) of the square machine box wall (1) are respectively attached to the inner wall surfaces of the first circular arc restraining plate (20.1), the third linear edge (1.2), the second circular arc restraining plate (1.3), the third circular arc restraining plate (1.3), the second circular arc restraining plate (1.3) and the fourth linear edge (1.8).

4. The sheet metal bending system of the weldless electrical cabinet according to claim 3, wherein: the hydraulic support is characterized by further comprising a frame type support (5), wherein a first hydraulic cylinder (21.1), a second hydraulic cylinder (21.2), a third hydraulic cylinder (21.3) and a fourth hydraulic cylinder (21.4) are fixedly mounted on the frame type support (5) respectively; the hydraulic control system is characterized in that a first hydraulic telescopic rod (22.1) of a first hydraulic cylinder (21.1) extends downwards and is fixedly connected with an upper restraint plate (20.2), a second hydraulic telescopic rod (22.2) of a second hydraulic cylinder (21.2) extends leftwards and is fixedly connected with a right restraint plate (20.4), a third hydraulic telescopic rod (22.3) of a third hydraulic cylinder (21.3) extends upwards and is fixedly connected with a lower restraint plate (20.6), and a fourth hydraulic telescopic rod (22.4) of a fourth hydraulic cylinder (21.4) extends rightwards and is fixedly connected with a left restraint plate (20.8).

5. The sheet metal bending system of the weldless electrical cabinet according to claim 4, wherein: the inner restraint mechanism comprises a strip-shaped movable restraint plate (10), and a first round angle restraint roller (16) and a second round angle restraint roller (15) are respectively arranged at two ends of the strip-shaped movable restraint plate (10); the upper surface and the lower surface of the strip-shaped movable restraint plate (10) are respectively a first restraint plane (10.1) and a second restraint plane (10.2); the first fillet constraint roller (16) and the second fillet constraint roller (15) are tangent to a first constraint plane (10.1) and a second constraint plane (10.2), and the outer diameters of the first fillet constraint roller (16) and the second fillet constraint roller (15) are consistent with the inner diameters of the first fillet (1.1), the second fillet (1.3), the third fillet (1.5) and the fourth fillet (1.7);

the first fillet constraint roller (16) and the second fillet constraint roller (15) are respectively and rotatably connected to the first fixed shaft (36) and the second fixed shaft (27) through a first bearing (37) and a second bearing (26); the first fixing shaft (36) and the second fixing shaft (27) are fixedly connected to the side wall of the strip-shaped movable restraint plate (10) through a first fixing piece (38) and a second fixing piece (39) respectively; a rocker arm (12) is further arranged on one side of the strip-shaped movable restraint plate (10) in parallel, and the middle of the rocker arm (12) is fixedly connected with one side of the strip-shaped movable restraint plate (10) through a fixed seat (11); a first transformation shaft hole (14) and a second transformation shaft hole (13) are respectively and vertically penetrated through two ends of the rocker arm (12); the first transformation shaft hole (14) and the second transformation shaft hole (13) are coaxial with the first fillet constraint roller (16) and the second fillet constraint roller (15) respectively;

the telescopic device also comprises a first telescopic device (18.1), a second telescopic device (18.2), a third telescopic device (18.3) and a fourth telescopic device (18.4);

the first expansion piece (18.1) can extend out of the first expansion shaft (19.1), the second expansion piece (18.2) can extend out of the second expansion shaft (19.2), the third expansion piece (18.3) can extend out of the third expansion shaft (19.3), and the fourth expansion piece (18.4) can extend out of the fourth expansion shaft (19.4);

when a first arc restraining plate (20.1), a second arc restraining plate (20.3), a third arc restraining plate (20.5), a fourth arc restraining plate (20.7), a left restraining plate (20.8), an upper restraining plate (20.2), a right restraining plate (20.4) and a lower restraining plate (20.6) jointly form a closed-loop square restraining frame (20), the first telescopic shaft (19.1), the second telescopic shaft (19.2), the third telescopic shaft (19.3) and the fourth telescopic shaft (19.4) are coaxial with the first arc restraining plate (20.1), the second arc restraining plate (20.3), the third arc restraining plate (20.5) and the fourth arc restraining plate (20.7) respectively;

when the first telescopic shaft (19.1) and the second telescopic shaft (19.2) are coaxially and movably inserted into the second transformation shaft hole (13) and the first transformation shaft hole (14) respectively, the strip-shaped movable restraint plate (10) is parallel to the position right below the upper restraint plate (20.2).

6. The sheet metal bending system of the weldless electrical cabinet according to claim 5, wherein: the device is characterized by further comprising a horizontal linear motor (7) fixedly mounted on the linear motor support (6), wherein a linear telescopic rod (8) of the horizontal linear motor (7) is parallel to the axial lines of the first telescopic shaft (19.1)/the second telescopic shaft (19.2)/the third telescopic shaft (19.3)/the fourth telescopic shaft (19.4); the end of a linear telescopic rod (8) of the horizontal linear motor (7) is fixed with a telescopic device mounting support (17), and a first telescopic device (18.1), a second telescopic device (18.2), a third telescopic device (18.3) and a fourth telescopic device (18.4) are all fixedly mounted on the telescopic device mounting support (17).

7. The sheet metal bending system of the weldless electrical cabinet according to claim 6, wherein: the first fixed shaft (36) is coaxially connected with a first transmission gear (35) through a first clutch (34) in a transmission way, the second fixed shaft (27) is coaxially connected with a second transmission gear (28) in a transmission way through a second clutch (29), a driving gear (24) is arranged between the first transmission gear (35) and the second transmission gear (28), the driving gear (24) is simultaneously meshed with the first transmission gear (35) and the second transmission gear (28), and also comprises a motor (31), an output shaft (25) of the motor (31) is coaxially connected with the driving gear (24) through a connecting arm (30), guide hole sliding blocks (32) are fixedly arranged on two sides of a shell of the motor (31), the guide hole sliding block (32) is provided with a vertical guide hole (33), a guide post (40) penetrates through the guide hole (33) in a sliding manner, and the driving device can drive the guide hole sliding block (32) to move up and down along the guide post (40); the lower end of the guide post (40) is fixed on a translation sliding block (42), the translation sliding block (42) is installed on a horizontal guide rail (41) extending along the left-right direction, and a driving mechanism can drive the translation sliding block (42) to slide along the horizontal guide rail (41); the horizontal left-right displacement of the translation sliding block (42) is matched with the up-down displacement of the guide hole sliding block (32), so that the motor (31) and the driving gear (24) can move up, down, left and right at will.

8. The working method of the sheet metal bending system of the weldless electrical cabinet according to claim 7, characterized in that:

preparing a metal pipe body (9), and then cutting the metal pipe body (9) into a plurality of circular thin metal walls (3); then, a circular thin metal wall (3) is installed on the bending device, and the bending device bends the circular thin metal wall (3) into a closed-loop square machine box wall (1).