CN112742916A

CN112742916A - Bending device capable of automatically feeding and discharging

Info

Publication number: CN112742916A
Application number: CN202011546529.5A
Authority: CN
Inventors: 尹逢金
Original assignee: Individual
Current assignee: Foshan Meibaojia Home Furnishing Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-05-04
Anticipated expiration: 2040-12-23
Also published as: CN112742916B

Abstract

The invention relates to the technical field of stamping processing, and discloses an automatic feeding and blanking bending device which comprises a die holder, wherein a bottom die is fixedly arranged on the upper surface of the die holder, the left side of the die holder is fixedly connected with a placing frame, the upper surface of the placing frame is provided with a feeding mechanism, the right side of the die holder is fixedly connected with a connecting frame, the right side of the die holder is provided with a clamping mechanism, the rear part of the die holder is fixedly connected with a rear plate, the interior of the rear plate is provided with a feeding mechanism, and the rear part of the rear plate is provided with a blanking mechanism. This automatic bending device of material loading unloading is when doing downwards through the punching press hydro-cylinder, and the pinion rack will receive the effect of top mould also can the downstream, and the ingenious lifting force of having borrowed whole top mould provides the power of feeding, drives the rotation support and carries out the swing motion to the effect of transmission material loading is waved in the realization, whole device simple structure, and is convenient, the improvement of to a great extent the machining efficiency that the punching press was bent.

Description

Bending device capable of automatically feeding and discharging

Technical Field

The invention relates to the technical field of stamping, in particular to a bending device capable of automatically feeding and blanking.

Background

The manual work that current equipment of bending still adopted in the course of working a lot lasts material loading and unloading, the reduction of very big degree machining efficiency, operating personnel's intensity of labour has been increaseed, the problem of the also unable fine assurance of staff's security of artificial blowing simultaneously, even set up automatic feeding and unloader, also need set up drive assembly alone to loading attachment and unloader usually, this can increase the cost of enterprise, and bending device can only bend same size work piece usually, if the work piece size changes, then need change the equipment of bending of not using the model, bending equipment's commonality is relatively poor, in addition, the work piece takes place to rock or squint easily at the in-process of bending, lead to the bending precision to reduce, so propose the bending device of automatic feeding unloading and solve above-mentioned problem that provides.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an automatic feeding and discharging bending device, which solves the problems of low manual feeding efficiency, high labor intensity and high potential safety hazard.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automatic bending device of material loading unloading, includes the die holder, the last fixed surface of die holder installs the die block, the left side fixedly connected with rack of die holder, the upper surface of rack is provided with charging mechanism, the right side fixedly connected with link of die holder, the top fixed mounting of link has punching oil cylinder, punching oil cylinder's output fixedly connected with top mould, the right side of die holder is provided with double-layered material mechanism, the rear portion fixedly connected with back plate of die holder, the inside of back plate is provided with feed mechanism, the rear portion of back plate is provided with unloading mechanism.

Preferably, the feeding mechanism comprises a rotating shaft rod, an adjusting rod is connected to the inner thread of the rotating shaft rod, a sliding pin is fixedly connected to the top of the adjusting rod, a rotating support is connected to the surface of the sliding pin in a sliding manner, the rear portion of the rotating support is rotatably connected to the front portion of the rear plate through a rotating shaft, a sliding plate is rotatably connected to the front portion of the rotating support, and a fixing plate is slidably connected to the surface of the sliding plate.

Preferably, the inside sliding connection of slide has the draw runner, the top fixedly connected with pushing block of draw runner, the welding of the bottom of pushing block has expanding spring, expanding spring's inside cup joints on the surface of draw runner, the surface of rotating the axostylus axostyle rotates the inside of connecting at the back plate.

Preferably, the rear end of the rotating shaft rod is fixedly connected with a small belt pulley, the surface of the small belt pulley is in transmission connection with the surface of a large belt pulley through a belt, the axis of the large belt pulley is fixedly connected with a helical gear through a rotating shaft, the axis of the helical gear is rotatably connected with the rear portion of the rear plate through the rotating shaft, the upper surface of the helical gear is clamped with a ratchet, the surface of the ratchet is fixedly connected with a rotating column, and the surface of the rotating column is rotatably connected with the rear portion of the rear plate.

Preferably, the surface meshing of helical gear has the pinion rack, the surperficial sliding connection of pinion rack has fixed cover, the fixed surface of fixed cover is connected at the rear portion of back plate, the inside sliding connection of fixed cover has the extrusion post, the extrusion spring has been cup jointed on the surface of extrusion post, the left end fixedly connected with contact plate of extrusion post, the surface of contact plate and the right side of pinion rack mutually contact, the surperficial sliding connection of pinion rack is at the rear portion of top die.

Preferably, the unloading mechanism is including the push rod, the fixed surface of push rod is connected with the limiting plate, the upper surface meshing of limiting plate has connecting gear, connecting gear's axle center department rotates and is connected with the backup pad, the anterior fixed connection of backup pad is on the back plate, connecting gear's surface and the rear portion intermeshing of pinion rack, the surperficial sliding connection of push rod is in the inside of back plate.

Preferably, the charging mechanism comprises a left jacket and a right jacket, the front part of the left jacket and the front part of the right jacket are connected with a sliding rod in a sliding manner, a charging spring is sleeved on the surface of the sliding rod, a material returning groove is formed in the rear parts of the left jacket and the right jacket, discharge holes are formed in the right sides of the left jacket and the right jacket, magnets are arranged at the bottoms of the left jacket and the right jacket, and the bottoms of the right jacket and the left jacket are fixedly connected with the top of the fixed plate.

Preferably, the material clamping mechanism comprises a material pressing plate, a sliding strip is fixedly connected to the right side of the material pressing plate, a positioning plate is fixedly connected to the right side of the die holder, a sliding groove is formed in the positioning plate, the surface of the sliding strip is slidably connected to the inner wall of the sliding groove, a spring plate is fixedly connected to the right side of the positioning plate, a material pressing spring is fixedly connected to the top of the spring plate, and the top of the material pressing spring is fixedly connected to the bottom of the sliding strip.

Preferably, the number of the material pressing springs is two, and the two material pressing springs are symmetrically distributed by taking the central line of the die holder as a symmetry axis.

Compared with the prior art, the invention provides an automatic feeding and discharging bending device, which has the following beneficial effects:

1. when moving downwards through the punching press oil cylinder, the pinion rack will receive the effect of top mould also can the downstream, ingenious rising power of borrowing whole top mould provides the power of feeding, drives the runing rest and carries out the motion of swaing to the realization is waved the effect of transmission material loading, whole device simple structure, and is convenient, the improvement of very big degree the machining efficiency that the punching press was bent.

2. When the plate is pushed above the die holder, the pressing plate is tensioned by the two pressing springs and is pressed on the plate, so that the plate is more stable above the die holder, the situation of shaking in the stamping and bending process is avoided, and the overall bending stability is improved.

3. Through the ascending in-process pinion rack rebound of top mould, the limiting plate antedisplacement will drive the push rod and push away the material forward, and the product after will bending is released, need not the manual work and operates, and the improvement of very big degree the security of processing to one set of drive arrangement can realize material loading, bend and unloading simultaneously, reduces drive arrangement's quantity, reduces the cost of enterprises.

4. When the ratchet block through setting up was then avoided the pinion rack to move down, the extrusion force led to the fact the rotation influence to the helical gear for whole helical gear only can carry out unidirectional rotation, avoids helical gear antiport to lead to the fact the influence, the stability of further improvement material loading to the material loading.

5. Through the design of four slide bars and charging spring, place between two left jackets and two right jackets when the sheet material, receive charging spring's tensioning force, will carry out slight clamp to the sheet material, through the tensioning action of four springs to can bend the work piece of unidimensional not, improve bending device's whole suitability.

Drawings

Fig. 1 is a schematic structural view of the whole front side of an automatic feeding and discharging bending device provided by the invention;

fig. 2 is a schematic view of an overall back structure of an automatic feeding and discharging bending device provided by the invention;

fig. 3 is a schematic diagram of a feeding mechanism and a discharging mechanism of the bending device with automatic feeding and discharging functions provided by the invention;

FIG. 4 is a schematic view of a loading mechanism of an automatic loading and unloading bending device provided by the invention;

fig. 5 is a schematic view of a material clamping mechanism of the bending device capable of automatically feeding and blanking provided by the invention.

In the figure: 1. a die holder; 2. bottom die; 3. a connecting frame; 4. punching an oil cylinder; 5. carrying out top die; 6. placing a rack; 7. a feeding mechanism; 701. rotating the shaft lever; 702. rotating the bracket; 703. a slide pin; 704. adjusting a rod; 705. a fixing plate; 706. a slide plate; 707. a material pushing block; 708. a tension spring; 709. a slide bar; 710. a small belt pulley; 711. a large belt pulley; 712. a helical gear; 713. a ratchet card; 714. turning the column; 715. a toothed plate; 716. fixing a sleeve; 717. extruding the column; 718. a compression spring; 719. a contact plate; 8. a blanking mechanism; 81. a push rod; 82. a connecting gear; 83. a limiting plate; 84. a support plate; 9. a charging mechanism; 91. a left jacket; 92. a right jacket; 93. a slide bar; 94. a charging spring; 95. a material returning groove; 96. a discharge port; 10. a back plate; 11. a material clamping mechanism; 111. a material pressing plate; 112. a slide bar; 113. a material pressing spring; 114. a spring plate; 115. and (7) positioning the plate.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, an automatic feeding and discharging bending device includes a die holder 1, a bottom die 2 is fixedly mounted on the upper surface of the die holder 1, a holder 6 is fixedly connected to the left side of the die holder 1, a charging mechanism 9 is disposed on the upper surface of the holder 6, a connecting frame 3 is fixedly connected to the right side of the die holder 1, a stamping oil cylinder 4 is fixedly mounted at the top of the connecting frame 3, an output end of the stamping oil cylinder 4 is fixedly connected with a top die 5, a material clamping mechanism 11 is disposed on the right side of the die holder 1, a rear plate 10 is fixedly connected to the rear portion of the die holder 1, a feeding mechanism 7 is disposed inside the rear plate 10, and a discharging mechanism 8 is disposed on the.

In this embodiment, the feeding mechanism 7 includes the rotation axostylus axostyle 701, the inside threaded connection of rotation axostylus axostyle 701 has the regulation pole 704, the top fixedly connected with sliding pin 703 of adjusting pole 704, the surperficial sliding connection of sliding pin 703 has the rotation support 702, the rear portion of rotation support 702 rotates through the pivot and connects in the front portion of back plate 10, the front portion rotation of rotation support 702 is connected with slide 706, the surperficial sliding connection of slide 706 has fixed plate 705, through the regulation pole 704 that sets up, because threaded connection, can rotate regulation pole 704, make the pivoted diameter finely tune, realize the swing amplitude of oscillation and adjust, be applicable to different size sheet metals, further improve equipment's suitability.

Further, the sliding strip 709 is slidably connected to the inside of the sliding plate 706, the pushing block 707 is fixedly connected to the top of the sliding strip 709, the telescopic spring 708 is welded to the bottom of the pushing block 707, the inside of the telescopic spring 708 is sleeved on the surface of the sliding strip 709, the surface of the rotating shaft 701 is rotatably connected to the inside of the rear plate 10, when the pushing block 707 on the sliding plate 706 moves rightwards, the pushing block pushing the bottommost plate is driven to push out, then the plate is pushed to the upper side of the die holder 1, then the plate continuously rotates to move leftwards and is influenced by the triangular structure of the pushing block 707, and when the plate moves leftwards, the whole pushing block 707 moves downwards, so that the situation of swing interference does not occur in circular swinging, and single circular punching feeding is realized.

Furthermore, the rear end of the rotating shaft 701 is fixedly connected with a small belt pulley 710, the surface of the small belt pulley 710 is in transmission connection with the surface of the large belt pulley 711 through a belt, the axis of the large belt pulley 711 is fixedly connected with a bevel gear 712 through a rotating shaft, the axis of the bevel gear 712 is rotatably connected with the rear portion of the rear plate 10 through a rotating shaft, the upper surface of the bevel gear 712 is clamped with a ratchet 713, the surface of the ratchet 713 is fixedly connected with a rotating column 714, the surface of the rotating column 714 is rotatably connected with the rear portion of the rear plate 10, the power is rotated onto the rotating shaft 701 through the belt, the rotating shaft 701 rotates to drive the sliding pin 703 to rotate, so that swinging feeding of the rotating support 702 is realized, linkage is realized, the lifting force of the top die 5 is effectively utilized, the power for automatic feeding is provided.

In addition, the surface meshing of helical gear 712 has pinion rack 715, the surface sliding connection of pinion rack 715 has fixed cover 716, the fixed surface connection of fixed cover 716 is at the rear portion of back plate 10, the inside sliding connection of fixed cover 716 has extrusion post 717, extrusion spring 718 has been cup jointed on the surface of extrusion post 717, the left end fixedly connected with contact plate 719 of extrusion post 717, the surface of contact plate 719 and the right side of pinion rack 715 mutually contact, the surface sliding connection of pinion rack 715 is at the rear portion of top mould 5, receive the effect of extrusion spring 718 through pinion rack 715, drive whole pinion rack 715 and helical gear 712 and carry out meshing transmission, it rotates to drive helical gear 712, during the helical gear 712 rotates, the rotation that will drive big belt pulley 711, it just can the feeding to realize that top mould 5 rises, move down can not move, very convenient.

Referring to fig. 3-5, the blanking mechanism 8 includes a push rod 81, a limiting plate 83 is fixedly connected to a surface of the push rod 81, a connecting gear 82 is engaged with an upper surface of the limiting plate 83, a supporting plate 84 is rotatably connected to an axis of the connecting gear 82, a front portion of the supporting plate 84 is fixedly connected to the rear plate 10, a surface of the connecting gear 82 is engaged with a rear portion of the toothed plate 715, a surface of the push rod 81 is slidably connected to an inside of the rear plate 10, the toothed plate 715 moves upward when the top die 5 rises, the limiting plate 83 moves forward to drive the push rod 81 to push forward, a bent product is pushed out, manual operation is not needed, and processing safety is improved to a great extent.

In this embodiment, the charging mechanism 9 includes a left jacket 91 and a right jacket 92, a sliding rod 93 is slidably connected to the front portion of the left jacket 91 and the front portion of the right jacket 92, a charging spring 94 is sleeved on the surface of the sliding rod 93, a discharging groove 95 is formed in the rear portions of the left jacket 91 and the right jacket 92, discharge holes 96 are formed in the right sides of the left jacket 91 and the right jacket 92, magnets are arranged at the bottoms of the left jacket 91 and the right jacket 92, the bottoms of the right jacket 92 and the left jacket 91 are fixedly connected to the top of the fixing plate 705, through the design of the four sliding rods 93 and the charging spring 94, when a sheet material is placed between the two left jackets 91 and the two right jackets 92, the sheet material is slightly clamped by the tensioning force of the charging spring 94, and by the tensioning action of the four springs, so that sheet materials of different sizes can be clamped, and the overall applicability of the charging mechanism 9, and the bottom is provided with magnet, in order to carry out magnetism with rack 6 and inhale fixedly, can not exert an influence to the expansion of whole charging mechanism 9 again simultaneously.

Further, the material clamping mechanism 11 includes a material pressing plate 111, a sliding strip 112 is fixedly connected to the right side of the material pressing plate 111, a positioning plate 115 is fixedly connected to the right side of the die holder 1, a sliding groove is formed in the positioning plate 115, the surface of the sliding strip 112 is slidably connected to the inner wall of the sliding groove, a spring plate 114 is fixedly connected to the right side of the positioning plate 115, a material pressing spring 113 is fixedly connected to the top of the spring plate 114, the top of the material pressing spring 113 is fixedly connected to the bottom of the sliding strip 112, when the material is pushed to the upper side of the die holder 1 through the material, the material pressing plate 111 is tensioned by the two material pressing springs 113, the material pressing plate 111 is pressed on the material, the material is more stable above the die holder 1, the shaking condition can not occur in the stamping and bending process, and the.

Furthermore, the number of the material pressing springs 113 is two, and the two material pressing springs 113 are symmetrically distributed by taking the central line of the die holder 1 as a symmetry axis, so that the clamping process is very stable by controlling the clamping of the two sides, the tilting condition is avoided, and the bending stability is improved.

In an initial state, the top die (5) and the bottom die (2) are in a die closing state, one plate is placed inside the charging mechanism 9, then the piston rod of the bending oil cylinder 4 moves upwards, the toothed plate 715 also moves upwards under the action of the top die 5 to drive the connecting gear 82 to rotate, the connecting gear 82 drives the limiting plate 83 to move forwards in the rotating process, the limiting plate 83 moves forwards to drive the push rod 81 to push forwards, and a bent product is pushed out;

the toothed plate 715 continues to move upward, at this time, the toothed plate 715 is under the action of the pressing spring 718 to push the contact plate 719, the contact plate 719 further pushes the entire toothed plate 715 to be in meshing transmission with the bevel gear 712, the bevel gear 712 is driven to rotate, the bevel gear 712 drives the large belt pulley 711 to rotate during rotation, the large belt pulley 711 drives the small belt pulley 710 to rotate through the transmission of the belt, the small belt pulley 710 drives the rotating shaft 701 to rotate during rotation, at this time, the rotating shaft 701 rotates to drive the adjusting rod 704 to rotate, the adjusting rod 704 rotates to drive the sliding pin 703 to rotate, the sliding pin 703 rotates to drive the rotating bracket 702 to perform a swinging motion, the sliding plate 706 is driven to perform a left-right movement during the swinging process, and the material pushing block 707 on the sliding plate 706 moves rightward to push the bottom plate to be pushed out, then pushing the die holder 1 to the upper part of the die holder to finish feeding;

and a piston rod of the bending oil cylinder 4 moves downwards to bend the next plate, so that the next working cycle is completed.

According to the working principle, one plate is placed inside the charging mechanism 9 by an operator, due to the design of the four sliding rods 93 and the charging springs 94, when the plate is placed between the two left clamping sleeves 91 and the two right clamping sleeves 92, the plate is slightly clamped under the tensioning force of the charging springs 94, the clamping force is smaller than the weight of the plate, the plate can sink along with the weight, and the plate with different sizes can be clamped under the tensioning action of the four springs, so that the overall applicability of the charging mechanism 9 is improved, at the moment, when a piston rod of the stamping oil cylinder 4 moves downwards, the toothed plate 715 moves downwards under the action of the top die 5, and the inclined teeth arranged on the toothed plate 715 move downwards, so that the toothed plate 715 cannot be meshed with the bevel gear 712 to rotate, and the whole toothed plate 715 is in sliding contact with the bevel gear 712, when the whole punching is completed and the whole punching is lifted upwards, the tooth plate 715 is under the action of the extrusion spring 718 to push the contact plate 719 and the contact plate 719 pushes the whole tooth plate 715 to be in meshing transmission with the helical gear 712 to drive the helical gear 712 to rotate, the helical gear 712 drives the large belt pulley 711 to rotate during the rotation process, the large belt pulley 711 drives the small belt pulley 710 to rotate through the transmission of the belt, the small belt pulley 710 drives the rotating shaft 701 to rotate during the rotation process, the rotating shaft 701 drives the adjusting rod 704 to rotate, the adjusting rod 704 drives the sliding pin 703 to rotate, and the rotating bracket 702 is driven to perform swinging motion when the sliding pin 703 rotates, the sliding plate 706 is driven to move left and right in the swinging process, the material pushing block 707 on the sliding plate 706 moves right, the material pushing block 707 on the bottom layer is driven to push out the material, then the material is pushed to the upper side of the die holder 1, then the material is continuously rotated and moved left, the material pushing block 707 is influenced by the triangular structure of the material pushing block 707, when the material is moved left, the whole material pushing block 707 moves down, so that the circular swing does not have the swinging interference, the single-time circular punching and feeding is realized, the lifting force of the whole top die 5 is ingeniously utilized, the feeding power is provided, the whole device has a simple and convenient structure, when the material is pushed to the upper side of the die holder 1, the material enters the lower side of the material pressing plate 111, the material pressing plate 111 is tensioned by the two material pressing springs 113, the material pressing plate 111 is pressed on the upper side of the material, the material is more stable above the die holder 1, and the shaking condition cannot occur in, the integral bending stability is improved, and in the bending process, the plate can deform and shrink, so that the whole material clamping mechanism 11 cannot influence the bending process, meanwhile, the toothed plate 715 moves upwards in the ascending process of the top die 5, teeth are arranged at the rear part of the toothed plate 715 and can drive the connecting gear 82 to rotate, the connecting gear 82 can drive the limiting plate 83 to move forwards in the rotating process, the limiting plate 83 moves forwards to drive the push rod 81 to push forwards, the bent product is pushed out without manual operation, the processing safety is improved to a great extent, and the push rod 81 is positioned in the middle of the V-shaped die, so that the feeding of the plate cannot be influenced when the toothed plate 715 is lifted, the integral feeding, material clamping and discharging are integrated, the operation is convenient and fast, and the ratchet clamp 713 is arranged to avoid the rotation influence of the bevel gear 712 caused by extrusion force when the toothed plate 715 moves downwards, so that the whole bevel gear 712 only rotates in one direction, and the influence of the reverse rotation of the bevel gear 712 on the feeding is avoided.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides an automatic bending device of material loading unloading, includes die holder (1), its characterized in that: the die holder is characterized in that a bottom die (2) is fixedly mounted on the upper surface of the die holder (1), a placing frame (6) is fixedly connected to the left side of the die holder (1), a charging mechanism (9) is arranged on the upper surface of the placing frame (6), a connecting frame (3) is fixedly connected to the right side of the die holder (1), a punching oil cylinder (4) is fixedly mounted at the top of the connecting frame (3), an output end of the punching oil cylinder (4) is fixedly connected with a top die (5), a clamping mechanism (11) is arranged on the right side of the die holder (1), a rear plate (10) is fixedly connected to the rear portion of the die holder (1), a charging mechanism (7) is arranged inside the rear plate (10), and a discharging mechanism (8) is arranged at the rear portion of the;

the feeding mechanism (7) comprises a rotating shaft rod (701), an adjusting rod (704) is connected to the inner portion of the rotating shaft rod (701) in a threaded mode, a sliding pin (703) is fixedly connected to the top of the adjusting rod (704), a rotating support (702) is connected to the surface of the sliding pin (703) in a sliding mode, the rear portion of the rotating support (702) is rotatably connected to the rear plate (10) through a rotating shaft, a sliding plate (706) is rotatably connected to the front portion of the rotating support (702), and a fixing plate (705) is connected to the surface of the sliding plate (706) in a sliding mode;

the blanking mechanism (8) comprises a push rod (81), a limiting plate (83) is fixedly connected to the surface of the push rod (81), a connecting gear (82) is meshed with the upper surface of the limiting plate (83), a supporting plate (84) is rotatably connected to the axis of the connecting gear (82), the front part of the supporting plate (84) is fixedly connected to the rear plate (10), the surface of the connecting gear (82) is meshed with the rear part of the toothed plate (715), and the surface of the push rod (81) is slidably connected to the inner part of the rear plate (10);

the material loading mechanism (9) comprises a left jacket (91) and a right jacket (92), the front portion of the left jacket (91) and the front portion of the right jacket (92) are connected with a sliding rod (93) in a sliding mode, a material loading spring (94) is sleeved on the surface of the sliding rod (93), a material returning groove (95) is formed in the rear portions of the left jacket (91) and the right jacket (92), discharge holes (96) are formed in the right sides of the left jacket (91) and the right jacket (92), magnets are arranged at the bottoms of the left jacket (91) and the right jacket (92), and the bottoms of the right jacket (92) and the left jacket (91) are fixedly connected with the top of a fixing plate (705).

2. The automatic feeding and discharging bending device according to claim 1, characterized in that: the inner part of the sliding plate (706) is connected with a sliding strip (709) in a sliding mode, the top of the sliding strip (709) is fixedly connected with a pushing block (707), a telescopic spring (708) is welded at the bottom of the pushing block (707), the inner part of the telescopic spring (708) is sleeved on the surface of the sliding strip (709), and the surface of the rotating shaft lever (701) is rotatably connected to the inner part of the rear plate (10).

3. The automatic feeding and discharging bending device according to claim 2, characterized in that: the rear end of the rotating shaft rod (701) is fixedly connected with a small belt pulley (710), the surface of the small belt pulley (710) is in transmission connection with the surface of a large belt pulley (711) through a belt, the axis of the large belt pulley (711) is fixedly connected with a bevel gear (712) through a rotating shaft, the axis of the bevel gear (712) is rotatably connected to the rear part of the rear plate (10) through the rotating shaft, the upper surface of the bevel gear (712) is connected with a ratchet (713) in a clamping manner, the surface of the ratchet (713) is fixedly connected with a rotating column (714), and the surface of the rotating column (714) is rotatably connected to the rear part of the rear plate (10).

4. The automatic feeding and discharging bending device according to claim 3, characterized in that: the surface meshing of helical gear (712) has toothed plate (715), the surperficial sliding connection of toothed plate (715) has fixed cover (716), the fixed surface connection of fixed cover (716) is at the rear portion of back plate (10), the inside sliding connection of fixed cover (716) has extrusion post (717), extrusion spring (718) has been cup jointed on the surface of extrusion post (717), the left end fixedly connected with contact plate (719) of extrusion post (717), the surface of contact plate (719) and the right side of toothed plate (715) contact each other, the surperficial sliding connection of toothed plate (715) is at the rear portion of top die (5).

5. The automatic feeding and discharging bending device according to claim 1, characterized in that: the clamping mechanism (11) comprises a material pressing plate (111), a sliding strip (112) is fixedly connected to the right side of the material pressing plate (111), a positioning plate (115) is fixedly connected to the right side of the die holder (1), a sliding groove is formed in the positioning plate (115), the surface of the sliding strip (112) is slidably connected to the inner wall of the sliding groove, a spring plate (114) is fixedly connected to the right side of the positioning plate (115), a material pressing spring (113) is fixedly connected to the top of the spring plate (114), and the top of the material pressing spring (113) is fixedly connected to the bottom of the sliding strip (112).

6. The automatic feeding and discharging bending device according to claim 5, wherein: the number of the material pressing springs (113) is two, and the two material pressing springs (113) are symmetrically distributed by taking the central line of the die holder (1) as a symmetry axis.