CN216681120U - System suitable for bending and welding net ring - Google Patents

Abstract

The utility model provides a system suitable for net ring welding of bending, belongs to and evaporates the automatic welding technique field that bends of aerated concrete panel cylinder mould. Be applicable to net ring welded system of bending, including the main frame and set up in the restraint upset assembly of main frame, system and welding system of bending, restraint upset assembly includes punch holder and lower plate, the lower plate is connected with flip structure, the system of bending includes the top pneumatic cylinder, left side pneumatic cylinder and right side pneumatic cylinder, the output of top pneumatic cylinder is provided with the board of bending, the below of the board of bending is provided with the piece of bending, the output of left side pneumatic cylinder is provided with the left side briquetting, the output of right side pneumatic cylinder is provided with the right side briquetting, welding system includes the bottom plate, bottom plate sliding connection has the movable plate, the movable plate is provided with static electrode assembly and dynamic electrode assembly. The system suitable for bending and welding the net rings can realize automatic bending forming and automatic welding of various types of reinforcing steel bars, and is wide in applicability, strong in practicability, good in stability and convenient to operate.

Description

System suitable for bending and welding net ring

Technical Field

The utility model relates to the technical field of automatic bending and welding of an autoclaved aerated concrete plate net cage, in particular to a system suitable for bending and welding a net ring.

Background

The production of autoclaved aerated concrete block plates needs to use a net cage, at present, two thin sheets which are adopted at the vertical rib position of the net cage are formed by welding, the materials are consumed in the form of welding the two thin sheets too much, the production process is complex, therefore, the thin sheet structure is replaced by the net ring structure at the vertical rib position of the net cage, the process is simpler and more practical, and the materials are saved. In the net circle course of working, need bend and weld the reinforcing bar, the bending of current net circle and welding link festival are accomplished through manual operation more, and this makes the output and the quality of net circle mainly by producers' operation proficiency and on-the-spot operational environment decide. However, the shapes and sizes of the bent reinforcing steel bars are uneven, the specified process requirements are difficult to meet, the defects of insufficient solder, missing solder, residues and the like are difficult to avoid due to manual welding quality, the welding surface is not attractive, the subsequent production is directly influenced, the product quality is reduced, and the finished product yield is low.

Therefore, there is a need for an integrated device capable of automatically bending and welding to improve production efficiency, save human resources, and improve production quality and productivity.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model provides a system suitable for bending and welding a net ring, which can realize automatic bending, forming and automatic welding of various types of reinforcing steel bars, and has the advantages of wide applicability, strong practicability, good stability and convenience in operation.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a system suitable for bending and welding a net ring comprises a main frame, and a constraint overturning assembly, a bending system and a welding system which are arranged on the main frame;

the constraint overturning assembly comprises an upper clamping plate fixedly arranged on the main frame and a lower clamping plate arranged below the upper clamping plate, the lower clamping plate is connected with an overturning structure, and the overturning structure drives the lower clamping plate to overturn so as to realize the opening and closing of the lower clamping plate and the upper clamping plate;

the bending system comprises a top hydraulic cylinder, a left hydraulic cylinder and a right hydraulic cylinder, an upper bending plate is arranged at the output end of the top hydraulic cylinder, and a plurality of vertically arranged bending blocks are uniformly arranged below the upper bending plate; the left hydraulic cylinder is positioned on the left side of the bending block at the lowest part, and the output end of the left hydraulic cylinder is provided with a left pressing block; the right hydraulic cylinder is positioned on the right side of the bending block at the lowest part, and the output end of the right hydraulic cylinder is provided with a right pressing block;

the welding system comprises a bottom plate fixedly connected with the bottom of the main frame, the top of the bottom plate is connected with a moving plate in a sliding mode, and the moving plate is provided with a static electrode assembly and a dynamic electrode assembly.

Furthermore, the turnover structure comprises a swing angle cylinder seat fixedly arranged on the main frame, the swing angle cylinder seat is rotatably connected with a first cylinder, the output end of the first cylinder is rigidly connected with one end of a fisheye joint, the other end of the fisheye joint is rotatably connected with a supporting seat, the supporting seat is fixedly connected with the lower clamp plate, and the supporting seat is further rotatably connected with the main frame.

Furthermore, the upper bending plate is of an inverted concave structure, and rollers are symmetrically arranged below the upper bending plate.

Furthermore, the top pneumatic cylinder set firmly in the main frame through top jar seat, the output and the top hydro-cylinder articulate of top pneumatic cylinder, the below that the top hydro-cylinder connects is connected with the board of bending on through the top slip table.

Furthermore, the bending system further comprises a transition plate, one side of the transition plate is connected with the left hydraulic cylinder and the right hydraulic cylinder respectively, the other side of the transition plate is connected with the front-back moving structure, and the front-back moving structure drives the left hydraulic cylinder and the right hydraulic cylinder to move front and back.

Furthermore, the left hydraulic cylinder is fixedly arranged on the transition plate through a left cylinder seat, the output end of the left hydraulic cylinder is connected with a left oil cylinder joint, and the right side of the left oil cylinder joint is connected with a left pressing block through a left sliding table; the right side pneumatic cylinder sets firmly in the cab apron through right side jar seat, the output and the right side hydro-cylinder articulate of right side pneumatic cylinder, the left side that the right side hydro-cylinder connects is passed through right side slip table and is connected with the right side briquetting.

Furthermore, the left pressing block is of an L-shaped structure, and the right pressing block is of a reverse L-shaped structure.

Furthermore, the top of the bottom plate is connected with the movable plate in a sliding mode through a first slider guide rail structure, the bottom plate is further provided with a third air cylinder, the output end of the third air cylinder is connected with the movable plate, and the telescopic motion of the third air cylinder drives the movable plate to move along the guide rails.

Further, the static electrode assembly comprises a static electrode mounting plate fixedly arranged above the moving plate through a support, and a static electrode insulating pad, a static electrode copper bar and a static electrode block are sequentially connected below the static electrode mounting plate from top to bottom; the movable electrode assembly comprises a force multiplying cylinder fixedly arranged on the movable plate, and the output end of the force multiplying cylinder is sequentially connected with a movable electrode insulating pad, a movable electrode copper bar and a movable electrode block from bottom to top; and the static electrode copper bar and the moving electrode copper bar are both connected with a transformer. .

Further, the system suitable for bending and welding the net ring further comprises a die quick-change system, wherein the die quick-change system comprises a fixing pin and a shape-change positioning block; the bottom of the bottom plate is connected with the fixed frame through a second sliding block guide rail structure; the model changing positioning block is installed on the fixing frame, the bottom plate and the model changing positioning block are correspondingly provided with positioning holes, and the fixing pin is inserted into the positioning holes of the bottom plate and the model changing positioning block.

The utility model has the beneficial effects that:

the utility model has compact structure and powerful function, is used as an important part in the production link of the net ring, is arranged behind the steel bar cutter, is conveyed according to the preset scale after the steel bar is straightened, finishes the bending and welding work on a corresponding system after the steel bar is cut off, and is the quality guarantee of the subsequent processing production.

Additional features and advantages of the utility model will be set forth in part in the detailed description which follows.

Drawings

Fig. 1 is a schematic structural diagram of a system suitable for bending and welding a mesh ring according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a restraint upender assembly and a bending system provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural view of a bending system and a welding system provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a welding system according to an embodiment of the present invention.

Reference numerals in the drawings of the specification include:

1-constraint overturning assembly, 101-swing angle cylinder seat, 102-upper clamping plate, 103-lower clamping plate, 104-fisheye joint, 105-cylinder I, 106-supporting seat, 2-bending system, 201-top hydraulic cylinder, 202-top cylinder seat, 203-left hydraulic cylinder, 204-left cylinder seat, 205-top sliding table, 206-upper bending plate, 207-roller, 208-pin shaft, 209-bending block, 210-top cylinder joint, 211-left pressing block, 212-transition plate, 213-linear bearing, 214-guide shaft, 215-cylinder II, 216-right hydraulic cylinder, 217-right pressing block, 218-left sliding table, 219-left cylinder joint, 220-right cylinder seat, 221-right cylinder joint, 222-right sliding table, 3-welding system, 301-static electrode mounting plate, 302-strut, 303-static electrode insulating pad, 304-static electrode copper bar, 305-transformer, 306-bracket, 307-cylinder three, 308-sliding block guide rail structure I, 309-moving electrode pressing plate, 310-moving electrode block, 311-moving electrode copper bar, 312-moving electrode insulating pad, 313-cylinder connecting flange, 314-floating structure outer sleeve, 315-floating structure inner sleeve, 316-double-force cylinder, 317-moving plate, 318-bottom plate, 319-guide column, 320-insulating sleeve, 321-static electrode block, 322-sliding block guide rail structure II, 4-mold quick-change system, 401-fixing pin, 402-change-type positioning block and 5-main frame.

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 "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "two," and "three" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In order to solve the problems in the prior art, as shown in fig. 1 to 4, the utility model provides a system suitable for bending and welding a net ring, which comprises a main frame 5, and a constraint overturning assembly 1, a bending system 2 and a welding system 3 which are arranged on the main frame 5;

the constraint and turnover assembly 1 comprises an upper clamping plate 102 fixedly arranged on the main frame 5 and a lower clamping plate 103 arranged below the upper clamping plate 102, wherein the lower clamping plate 103 is connected with a turnover structure, and the turnover structure drives the lower clamping plate 103 to turn over so as to realize the opening and closing of the lower clamping plate 103 and the upper clamping plate 102;

the bending system 2 comprises a top hydraulic cylinder 201, a left hydraulic cylinder 203 and a right hydraulic cylinder 216, an upper bending plate 206 is arranged at the output end of the top hydraulic cylinder 201, and a plurality of vertically arranged bending blocks 209 are uniformly arranged below the upper bending plate 206; the left hydraulic cylinder 203 is positioned on the left side of the bending block 209 at the lowest part, and the output end of the left hydraulic cylinder 203 is provided with a left pressing block 211; the right hydraulic cylinder 216 is positioned on the right side of the bending block 209 at the lowest part, and the output end of the right hydraulic cylinder 216 is provided with a right pressing block 217;

the welding system 3 comprises a bottom plate 318 fixedly connected with the bottom of the main frame 5, a moving plate 317 is slidably connected to the top of the bottom plate 318, and the moving plate 317 is provided with a static electrode assembly and a dynamic electrode assembly.

As shown in fig. 1, the turnover structure comprises a swing angle cylinder seat 101 fixedly arranged on a main frame 5, the swing angle cylinder seat 101 is rotatably connected with a cylinder I105, the output end of the cylinder I105 is rigidly connected with one end of a fisheye joint 104, the other end of the fisheye joint 104 is rotatably connected with a support seat 106, the support seat 106 is fixedly connected with a lower clamp plate 103, and the support seat 106 is also rotatably connected with the main frame 5, when the turnover structure works, the output end of the cylinder I105 moves downwards to drive the lower clamp plate 103 to turn downwards so as to separate the upper clamp plate 102 from the lower clamp plate 103, so that a steel bar is fed into a bending system 2 through a space between the upper clamp plate 102 and the lower clamp plate 103, when the steel bar fed into the system suitable for mesh loop bending welding reaches a set length, the output end of the cylinder I105 moves upwards to drive the lower clamp plate 103 to turn upwards so as to enable the upper clamp plate 102 and the lower clamp plate 103 to be tightly attached to the steel bar, at this time, the reinforcing bar is cut by the reinforcing bar cutter located at the previous station in preparation for bending.

As shown in fig. 1 and fig. 2, the upper bending plate 206 is of an inverted concave structure, rollers 207 are symmetrically arranged below the upper bending plate 206, in this embodiment, two rollers 207 are symmetrically arranged on two sides below the upper bending plate 206, and the upper bending plate 206 is rotatably connected with the rollers 207 through a pin roll 208, in operation, the middle of the length direction of the steel bar is located between the rollers 207 of the upper bending plate 206 and the bending block 209 at the top, the width of the bending block 209 is the width of the net ring, the top hydraulic cylinder 201 pushes the upper bending plate 206 to move downwards, the two rollers 207 push two sides of the steel bar to bend downwards, 4 bending blocks 209 vertically arranged support the steel bar in the width direction, so as to ensure the width of the net ring, and the 4 bending blocks 209 are uniformly arranged from top to bottom and fixed on the main frame 5 through screws.

Top pneumatic cylinder 201 sets firmly in main frame 5 through top cylinder seat 202, the output and the top oil cylinder joint 210 of top pneumatic cylinder 201 are connected, top sliding table 205 is passed through to top oil cylinder joint 210's below and the board 206 that bends on is connected, it is preferred, top cylinder seat 202 passes through hexagon socket head cap screw erection joint with main frame 5, main frame 5 is provided with the slide rail with top sliding table 205 complex, when guaranteeing that top pneumatic cylinder 201 promotes the board 206 that bends downwards, the stability of the board 206 removal of bending on, further guarantee the quality of buckling of reinforcing bar.

As shown in fig. 2 and 3, the bending system 2 further includes a transition plate 212, one side of the transition plate 212 is connected to the left hydraulic cylinder 203 and the right hydraulic cylinder 216 respectively, the other side of the transition plate 212 is connected to a front-back moving structure, the front-back moving structure drives the left hydraulic cylinder 203 and the right hydraulic cylinder 216 to move back and forth, specifically, before the top hydraulic cylinder 201 works, the front-back moving structure drives the left hydraulic cylinder 203 and the right hydraulic cylinder 2 to retract, and interference with the left hydraulic cylinder 203 and the right hydraulic cylinder 216 is avoided when the steel bar is bent downward; after the reinforcing steel bar is bent downwards, the front-back moving structure drives the left hydraulic cylinder 203 and the right hydraulic cylinder 216 to extend out so as to bend the two ends of the reinforcing steel bar. In this embodiment, the forward-backward movement structure includes a second cylinder 215 fixedly disposed on the other side of the transition plate 212, an output end of the second cylinder 215 is fixed to the main frame 5, the transition plate 212 is provided with two linear bearings 213, the two linear bearings 213 are disposed on two sides of the second cylinder 215, the linear bearings 213 are sleeved outside the guide shafts 214, the two guide shafts 214 are fixedly disposed on the main frame 5, the second cylinder 215 makes a contraction motion, the second cylinder 215 drives the transition plate 212 to return to an initial position along the guide shafts 214, and a bending space and a welding space at the top of the steel bar are avoided; the second cylinder 215 extends, and the second cylinder 215 drives the transition plate 212 to extend along the guide shaft 214, so that the left end and the right end of the reinforcing steel bar are bent.

The left hydraulic cylinder 203 is fixedly arranged on the transition plate 212 through the left cylinder seat 204, the output end of the left hydraulic cylinder 203 is connected with the left oil cylinder joint 219, the right side of the left oil cylinder joint 219 is connected with the left pressing block 211 through the left sliding table 218, preferably, the left cylinder seat 204 is connected with the transition plate 212 through the hexagon socket head cap screw in an installing manner, and the transition plate 212 is provided with a sliding rail matched with the left sliding table 218, so that the moving stability of the left sliding table 218 is ensured when the left hydraulic cylinder 203 pushes the left sliding table 218 rightwards, and the bending quality of the reinforcing steel bar is further ensured; the right hydraulic cylinder 216 is fixedly arranged on the transition plate 212 through a right cylinder base 220, the output end of the right hydraulic cylinder 216 is connected with a right cylinder connector 221, the left side of the right cylinder connector 221 is connected with a right pressing block 217 through a right sliding table 222, preferably, the right cylinder base 220 is connected with the transition plate 212 through an inner hexagon screw in an installing mode, and the transition plate 212 is provided with a sliding rail matched with the right sliding table 222, so that when the right hydraulic cylinder 216 pushes the right sliding table 222 rightwards, the stability of movement of the right sliding table 222 is guaranteed, and the bending quality of the reinforcing steel bars is further guaranteed.

The left pressing block 211 is of an L-shaped structure, and the right pressing block 217 is of an inverted L-shaped structure, in this embodiment, the left pressing block 211 and the right pressing block 217 are different in height to realize overlapping after bending two ends of the steel bar so as to facilitate welding, for example, the right pressing block 217 is higher than the left pressing block 211, correspondingly, the right side of the bending block 209 located at the lowermost position is higher than the left side, after the top hydraulic cylinder 201 bends the steel bar downwards, the right hydraulic cylinder 216 pushes the right pressing block 217 from right to left, and the right pressing block 217 is matched with the right side of the bending block 209 located at the lowermost position to bend the right end of the steel bar; then, the left hydraulic cylinder 203 pushes the left press piece 211 from left to right, the left press piece 211 engages with the left side of the bending piece 209 located at the lowermost portion, bends the left end portion of the reinforcing bar, and causes the left end portion of the reinforcing bar to be stacked outside the right end portion in preparation for welding.

The top of the bottom plate 318 is in sliding connection with the moving plate 317 through the first slider guide rail structure 308, the bottom plate 318 is further provided with a third cylinder 307, the output end of the third cylinder 307 is connected with the moving plate 317, telescopic motion of the third cylinder 307 drives the moving plate 317 to move along the guide rails, specifically, the moving plate 317 is fixed on the slider of the first slider guide rail structure 308 through the hexagon socket head cap screw, the moving plate 317 and the first slider guide rail structure 308 are installed on the bottom plate 318 together, and the moving plate 317 moves along the guide rails of the first slider guide rail structure 308; the third cylinder 307 extends out to push the moving plate 317 to move, so that the static electrode assembly and the dynamic electrode assembly are respectively positioned at the upper side and the lower side of the position (the joint position of two ends of the bent and stacked steel bars) to be welded of the steel bars, and the welding is realized through the dynamic electrode block 310 and the static electrode block 321.

As shown in fig. 3 and 4, the static electrode assembly includes a static electrode mounting plate 301 fixed above the moving plate 317 through a pillar 302, and a static electrode insulating pad 303, a static electrode copper bar 304 and a static electrode block 321 are sequentially connected below the static electrode mounting plate 301 from top to bottom; the moving electrode assembly comprises a force multiplying cylinder 316 fixedly arranged on the moving plate 317, and the output end of the force multiplying cylinder 316 is sequentially connected with a moving electrode insulating pad 312, a moving electrode copper bar 311 and a moving electrode block 310 from bottom to top; both the static electrode copper bar 304 and the moving electrode copper bar 311 are connected with a transformer 305. In this embodiment, 4 support columns 302 are provided to stably support the static electrode mounting plate 301; the multiple force cylinder 316 is connected to the moving electrode insulating pad 312 through a cylinder connecting flange 313, and in order to ensure the stability of the operation of the multiple force cylinder 316, preferably, the output end of the multiple force cylinder 316 is connected to the cylinder connecting flange 313 through a floating connecting member, which is implemented by using the prior art, for example, the floating connecting member includes a floating structure outer sleeve 314 and a floating structure inner sleeve 315; the two poles of the transformer 305 are respectively connected with the static electrode copper bar 304 and the moving electrode copper bar 311 to weld the positions to be welded of the reinforcing steel bars, preferably, the moving electrode block 310 is fixedly arranged on the moving electrode copper bar 311 through a moving electrode pressing plate 309 to ensure the working stability of the moving electrode copper bar 311 and the moving electrode block 310 in the process that the power cylinder 316 is pushed upwards; the transformer 305 is fixedly arranged on the moving plate 317 through the bracket 306, and the transformer 305 moves along with the moving plate 317 to ensure the stable operation of the static electrode block 321 and the dynamic electrode block 310; the moving electrode copper bar 311 is fixedly connected with the guide column 319 through the insulating sleeve 320, the guide column 319 is in sliding fit with the linear bearing on the moving plate 317, the guide column 319 slides along the linear bearing in the process that the multi-force cylinder 316 pushes the moving electrode copper bar 311 to move up and down, so that the moving electrode assembly is guided and limited, and the guide column 319 is fixedly arranged on the moving plate 317.

As shown in fig. 1 and 4, a system suitable for bending and welding a mesh ring further includes a mold quick-change system 4, where the mold quick-change system 4 includes a fixing pin 401 and a shape-change positioning block 402; the bottom of the bottom plate 318 is connected with the fixed frame through a second slider guide rail structure 322; the model changing positioning block 402 is mounted on the fixing frame, the bottom plate 318 and the model changing positioning block 402 are correspondingly provided with positioning holes, and the fixing pin 401 is inserted into the positioning holes of the bottom plate 318 and the model changing positioning block 402. In this embodiment, the fixing frame supports the entire system suitable for bending and welding the net ring, and the bottom plate 318 is fixed to the slider of the second slider-rail structure 322 and moves along the rail of the second slider-rail structure 322 to move the entire system suitable for bending and welding the net ring to a set position. In order to process net rings with different shapes and sizes, steel bars with various types need to be adopted, correspondingly, the upper clamping plate 102, the lower clamping plate 103, the upper bending plate 206, the bending block 209, the left pressing block 211 and the right pressing block 217 need to be replaced, when the net rings are replaced, the bottom plate 318 is moved to a set position on the fixing frame through the second slider guide rail structure 322, and then the fixing pin 401 is inserted into the positioning holes of the bottom plate 318 and the replacement positioning block 402 for positioning, so that the components can be conveniently replaced; according to the position difference of the upper clamping plate 102, the lower clamping plate 103, the upper bending plate 206, the bending block 209, the left pressing block 211 and the right pressing block 217, the bottom plate 318 needs to be moved to different positions for fixing, so that the quick replacement of each part is realized.

The utility model discloses a using method of a system suitable for bending and welding a net ring, which comprises the following steps of:

the steel bar is conveyed by the straightener and passes through a constraint channel formed by the upper clamping plate 102 and the lower clamping plate 103, when the conveying distance of the steel bar meets the process requirement, the first air cylinder 105 extends out, so that the upper clamping plate 102 and the lower clamping plate 103 clamp the steel bar, and the steel bar is cut off by the steel bar cutter in the preorder process of the system;

the top hydraulic cylinder 201 feeds and pushes the reinforcing steel bars to bend the reinforcing steel bars, and after the reinforcing steel bars are bent at a specified angle according to the constraint of the die, the second air cylinder 215 acts to push the transition plate 212 to a specified position; then the left hydraulic cylinder 203 and the right hydraulic cylinder 216 act to complete the bending action of the two end parts of the steel bars, the bending work is completed, the second air cylinder 215 acts to return the transition plate 212 to the initial position, and the bending and welding space is avoided;

the third cylinder 307 pushes the moving plate 317 to move, the static electrode assembly and the dynamic electrode assembly are moved to a welding position, the power-multiplying cylinder 316 pushes the dynamic electrode block 310 to move upwards, the welding position of the net ring is compacted between the dynamic electrode block 310 and the static electrode block 321 to perform welding operation, after welding is finished, the cylinder rod of the power-multiplying cylinder 316 and the third cylinder 307 are withdrawn in sequence, the moving plate 317 and all the assemblies above the moving plate are pulled back to an initial position, and a net ring workpiece to be finished is taken away and then enters the next production cycle.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A bending and welding system suitable for a net ring is characterized by comprising a main frame, and a constraint overturning assembly, a bending system and a welding system which are arranged on the main frame;

the constraint overturning assembly comprises an upper clamping plate fixedly arranged on the main frame and a lower clamping plate arranged below the upper clamping plate, and the lower clamping plate is connected with the overturning structure;

the bending system comprises a top hydraulic cylinder, a left hydraulic cylinder and a right hydraulic cylinder, an upper bending plate is arranged at the output end of the top hydraulic cylinder, and a plurality of vertically arranged bending blocks are uniformly arranged below the upper bending plate; the left hydraulic cylinder is positioned on the left side of the bending block at the lowest part, and the output end of the left hydraulic cylinder is provided with a left pressing block; the right hydraulic cylinder is positioned on the right side of the bending block at the lowest part, and the output end of the right hydraulic cylinder is provided with a right pressing block;

the welding system comprises a bottom plate fixedly connected with the bottom of the main frame, the top of the bottom plate is connected with a moving plate in a sliding mode, and the moving plate is provided with a static electrode assembly and a dynamic electrode assembly.

2. The system for bending and welding net rings according to claim 1, wherein the overturning structure comprises a swing angle cylinder seat fixedly arranged on the main frame, the swing angle cylinder seat is rotatably connected with one end of a cylinder, the output end of the cylinder I is rigidly connected with one end of a fisheye joint, the other end of the fisheye joint is rotatably connected with a supporting seat, the supporting seat is fixedly connected with the lower clamping plate, and the supporting seat is further rotatably connected with the main frame.

3. The system suitable for bending and welding the net rings according to claim 1, wherein the upper bending plate is of an inverted concave structure, and rollers are symmetrically arranged below the upper bending plate.

4. The system suitable for net ring bending and welding as claimed in claim 1, wherein the top hydraulic cylinder is fixedly arranged on the main frame through a top cylinder seat, an output end of the top hydraulic cylinder is connected with a top cylinder joint, and the lower part of the top cylinder joint is connected with an upper bending plate through a top sliding table.

5. The system suitable for bending and welding the net rings according to claim 1, further comprising a transition plate, wherein one side of the transition plate is connected with a left hydraulic cylinder and a right hydraulic cylinder respectively, and the other side of the transition plate is connected with a back-and-forth moving structure.

6. The system suitable for net ring bending and welding as claimed in claim 5, wherein the left hydraulic cylinder is fixedly arranged on the transition plate through a left cylinder seat, the output end of the left hydraulic cylinder is connected with a left cylinder joint, and the right side of the left cylinder joint is connected with a left pressing block through a left sliding table; the right side pneumatic cylinder sets firmly in the cab apron through right side jar seat, the output and the right side hydro-cylinder articulate of right side pneumatic cylinder, the left side that the right side hydro-cylinder connects is passed through right side slip table and is connected with the right side briquetting.

7. The system for bending and welding the net rings according to claim 1, wherein the left pressing block is of an L-shaped structure, and the right pressing block is of a reverse L-shaped structure.

8. The system suitable for bending and welding the net rings according to claim 1, wherein the top of the bottom plate is slidably connected with the moving plate through a first slider guide rail structure, the bottom plate is further provided with a third air cylinder, and an output end of the third air cylinder is connected with the moving plate.

9. The system suitable for bending and welding the mesh ring according to claim 1, wherein the static electrode assembly comprises a static electrode mounting plate fixedly arranged above the moving plate through a support, and a static electrode insulating pad, a static electrode copper bar and a static electrode block are sequentially connected below the static electrode mounting plate from top to bottom; the movable electrode assembly comprises a force multiplying cylinder fixedly arranged on the movable plate, and the output end of the force multiplying cylinder is sequentially connected with a movable electrode insulating pad, a movable electrode copper bar and a movable electrode block from bottom to top; and the static electrode copper bar and the moving electrode copper bar are both connected with a transformer.

10. The system suitable for bending and welding the net ring according to claim 1, further comprising a quick die change system, wherein the quick die change system comprises a fixing pin and a shape change positioning block; the bottom of the bottom plate is connected with the fixed frame through a second sliding block guide rail structure; the model changing positioning block is installed on the fixing frame, the bottom plate and the model changing positioning block are correspondingly provided with positioning holes, and the fixing pin is inserted into the positioning holes of the bottom plate and the model changing positioning block.

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