CN208116616U - Automate quadrangle frame bending machine - Google Patents

Abstract

The utility model provides an automatic four-corner frame bending machine, which includes a machine base, a bending device and an unloading device. There are two bending devices, and the two bending devices can be relatively slidably arranged at both ends of the machine base , which is used to symmetrically bend the piece to be bent twice to form a frame body, and the two bending devices slide to the preset bending positions at both ends of the piece to be bent for the first degree of bending. Then the two bending devices respectively slide to the preset bending position in the middle of the part to be bent for the second degree bending; the unloading device is installed in the middle of the machine base to send out the bent frame parts. The automatic four-corner frame bending machine has the advantages of simple structure, easy operation and high production efficiency.

Description

Automatic four-corner frame bending machine

technical field

The utility model relates to a metal pipe bending machine, in particular to an automatic four-corner frame bending machine for bending a metal pipe into a metal frame.

Background technique

In the production process of metal tube racks such as clothes hangers and shoe racks, it is necessary to bend the metal tubes into metal frames first, and then assemble the metal frames and metal tubes into metal tube racks. At present, the existing bending equipment is to respectively bend each bending position by setting multiple bending devices. Such bending equipment has complex structure, cumbersome production operations and low production efficiency.

Utility model content

In view of the above, the purpose of this utility model is to provide a four-corner frame bending machine, which has a simple structure, easy operation and high production efficiency.

The technical solution that the utility model relates to:

An automatic four-corner frame bending machine, including a machine base, a bending device and an unloading device. The part to be bent is symmetrically bent twice to form a frame body, and the two bending devices slide to the preset bending positions at both ends of the part to be bent for the first degree bending, and then two bends The device slides to the preset bending position in the middle of the part to be bent for the second degree bending; the unloading device is installed in the middle of the machine base to send out the bent frame.

Further, the four-corner frame bending machine also includes two sliding mechanisms, and each bending device is slidably arranged on the base through each sliding mechanism, and each sliding mechanism includes two slide rails, a lead screw and a lead screw driver , the two slide rails are arranged on the machine base in parallel, extending from one end of the machine base to the middle position, the bending device is slidably arranged on the two slide rails, one end of the lead screw is rotatably connected to the bottom of the bending device, and the other end is connected to the bottom of the bending device The lead screw driver is connected, and the lead screw driver is fixedly installed at one end on the machine base.

Further, each bending device includes a fixed box, a rotating shaft, a bending base, a rotating shaft driving member, a rotating shaft transmission mechanism and a swing mechanism. The bottom of the fixed box is slid on two slide rails, and the output of the lead screw One end of the rotating shaft is connected to the bottom of the fixed box, one end of the rotating shaft is rotatably arranged in the fixed box, the other end protrudes from the front side wall of the fixed box, the extended end of the rotating shaft is fixedly connected with a bending base, and the driving part of the rotating shaft is erected On the fixed box, the rotating shaft transmission mechanism is arranged inside the fixed box. The rotating shaft driving part is connected to the rotating shaft through the rotating shaft transmission mechanism, and the swing mechanism is connected to the rotating shaft, and the swing mechanism is used to press the part to be bent on the bending base. , and rotate the swing around the rotating shaft to bend the part to be bent.

Further, the bending base is a columnar body, the columnar body includes two straight side wall surfaces perpendicular to each other, a rounded surface connected to the corner of the two straight side wall surfaces, connected to the two straight side wall surfaces and connected to the circular The circular arc surface opposite the corner surface, and the wall surfaces at both ends; the cylindrical body is located on the circular arc surface, and the lower bending groove is recessed, and the lower bending groove is set around the circular arc surface to accommodate the bending of the workpiece to be bent part; there is at least one lower bending groove, and a mounting hole is opened on the columnar body, the mounting hole runs through the walls at both ends, and one end of the rotating shaft is fixedly connected to the mounting hole.

Further, the swing mechanism includes a swing arm, a gear plate and a swing drive member. The swing arm has a cylindrical portion and an arm body portion extending sideways on the outer peripheral wall at one end of the cylindrical portion. The cylindrical portion is opposite to the arm body portion. One end of the shaft is fixedly connected with a gear plate, the cylindrical part is rotatably sleeved on the rotating shaft and located between the bending base and the fixed box, the end of the cylindrical part with the arm body is located outside the fixed box, and the cylindrical part is One end fixedly connected with the gear plate is arranged in the fixed box body, the swing driving part is erected on the top of the fixed box body, and the telescopic end of the swing drive part is connected with a lifting rack meshed with the gear plate.

Further, the swing mechanism also includes an extruding driver, a quick clip structure, a connecting block and a bending die, an extruding driver is installed on the arm body of the swing arm away from the cylindrical portion, and the extruding driver The telescopic end is connected to the upper end of the quick clamp structure, the connecting block is connected to the lower end of the quick clamp structure, the bending mold is slid under the connecting block, and the upper bending groove corresponding to the lower bending groove is opened on the bending mold. The number of bending grooves is consistent with the number of down bending grooves.

Further, the quick clip structure includes a hinge seat, two hinge plates, three hinge shafts and two connecting rods, the hinge seat is installed on the arm body of the swing arm and is located at the telescopic end of the extrusion drive, and each hinge plate There are three hinged holes in a triangular shape. The two hinged plates are hinged on the hinged seat through a hinged shaft. The two hinged plates are located below the hinged seat, and the other ends of the two connecting rods have a pin shaft, and the two connecting rods are hinged on both sides of the connecting block through the pin shaft, and the telescopic end of the extrusion drive part is connected to the hinged shaft located outside the hinged seat. The connection is used to drive the two hinge plates to rotate upward or downward around the hinge base.

Further, the unloading device includes a connecting plate, two unloading guide rods, a jacking seat and an unloading driving part. The two unloading guide rods are installed on both ends of the top of the connecting plate obliquely downward, and the jacking seat can be lifted up and down. The jacking seat is located on the side opposite to the two discharge guide rods on the connecting plate. The body of the unloading driving part can be lifted and installed on the bottom of the jacking seat, and the piston rod of the unloading driving part passes through the top. At the bottom of the lifting seat, the piston rod of the unloading driving part is fixedly mounted on the machine base.

Further, the jacking seat includes two opposite push plates and a jacking plate integrally connected to the bottom of the two push plates, the piston rod of the unloading driving part is mounted on the lifting plate in a liftable manner, and the main body of the unloading driving part is connected to the lifting plate. The lifting plate is fixed.

Further, the two push plates have slopes inclined to one side of the two discharge guide rods, and the downwardly inclined ends of the two discharge guide rods have upwardly bent hooks.

The beneficial effects of the utility model:

The automatic four-corner frame bending machine only needs to be equipped with two bending devices that can slide back and forth to realize the bending of the parts to be bent into frame parts, which makes the structure of the four-corner frame bending machine simple. Unloading is easy to operate and the production efficiency is further improved.

Description of drawings

Fig. 1 is the flowchart of bending the parts to be bent into frame parts of the four-corner frame bending machine of the present invention;

Fig. 2 is the three-dimensional structural diagram of the four-corner frame bending machine of the present utility model;

Fig. 3 is an enlarged view of part C in Fig. 2;

Fig. 4 is the local cut-away schematic diagram of four-corner frame bending machine of the present utility model;

Fig. 5 is an enlarged view of part D in Fig. 2;

Fig. 6 is a three-dimensional view of the bending base of the four-corner frame bending machine of the present invention;

Fig. 7 is a side view of the bending base of the four-corner frame bending machine of the present invention;

Fig. 8 is a perspective view of the four-corner frame bending machine of the present invention in a bending state.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the protection scope of the utility model.

Please refer to Fig. 1 and Fig. 2, the utility model provides an automatic four-corner frame bending machine, which is used to bend the metal pipe A into a metal frame B. Bending is performed symmetrically, and then the middle part of the metal pipe A is bent symmetrically, so that the metal pipe A is bent into a metal frame B. The four-corner frame bending machine includes a machine base 1, two bending devices 2, a positioning device 3 and an unloading device 4;

The two bending devices 2 are relatively slidably arranged at both ends of the machine base 1, and are used to symmetrically bend the piece to be bent (the piece to be bent in this embodiment is the metal pipe A) by 90 degrees twice. Bending to form a frame body (the frame body in this embodiment is the metal frame B). The two bending devices 2 respectively slide to the preset bending positions at both ends of the piece to be bent for the first 90-degree bending, and then the two bending devices 2 respectively slide to the preset bending positions in the middle of the piece to be bent Make a second 90-degree bend.

The positioning device 3 is erected on the machine base 1 between the two bending devices 2, and is used to position the piece to be bent at the preset bending position on the two bending devices 2;

The unloading device 4 is installed on the base 1 near the bottom of the positioning device 3, and is used for sending out the bent frame parts.

When using the four-corner frame bending machine of the utility model, place the piece to be bent on the positioning device 3, and the two bending devices 2 slide from the middle of the machine base 1 to the two ends of the machine base 1 to the two ends of the piece to be bent The two bending devices 2 respectively bend the two ends of the piece to be bent at 90 degrees symmetrically, and then the two bending devices 2 relatively slide to the middle of the piece to be bent, and the middle part of the piece to be bent The 90-degree bending is carried out symmetrically, so that the part to be bent is bent into a frame part. The unloading device 4 sends out the frame parts placed on the positioning device 3, and then completes the entire production process. The four-corner frame bending machine only needs to be equipped with two bending devices 2 that can slide back and forth relatively, and the parts to be bent can be bent into frame parts, so that the structure of the four-corner frame bending machine is simple. 4 It makes the operation easy and the production efficiency is further improved.

Further, please refer to Fig. 2, the four-corner frame bending machine also includes two sliding mechanisms 5, each bending device 2 is slidably arranged on the base 1 through each sliding mechanism 5, and each sliding mechanism 5 includes two slide rails 6. The lead screw 7 and the lead screw driver 8, the two slide rails 6 are arranged in parallel on the machine base 1, extending from one end of the machine base 1 to the middle position, and the bending device 2 is slidably arranged on the two slide rails 6, One end of the lead screw 7 is rotatably connected to the bottom of the bending device 2 , and the other end is connected to the lead screw driver 8 , which is fixedly mounted on one end of the machine base 1 . The transmission mode of two sliding rails 6 and the lead screw 7 is adopted, so that the sliding friction loss is small, the transmission efficiency is high, and the running precision is high.

Please refer to Fig. 2 and Fig. 3, bending device 2 all comprises fixed box body 9, rotating shaft 10, bending base 11, rotating shaft driver 12, rotating shaft transmission mechanism (not shown) and swing mechanism 13, fixed box body 9 The bottom slides on the two slide rails 6, the output end of the lead screw 7 is connected to the bottom of the fixed box 9, the forward/reverse rotation of the lead screw 7 drives the fixed box 9 to slide back and forth along the two slide rails 6, and one end of the rotating shaft 10 It is rotatably arranged in the fixed box body 9, and the other end protrudes from the front side wall of the fixed box body 9. The extended end of the rotating shaft 10 is fixedly connected with a bending base 11, and the bending base 11 is used to cooperate with the swing mechanism 1 to The bending part of the workpiece to be bent is subjected to swing bending. The rotating shaft driving part 12 is erected on the fixed box body 9, and the rotating shaft transmission mechanism is arranged inside the fixed box body 9. The rotating shaft driving part 12 is connected with the rotating shaft 10 through the rotating shaft transmission mechanism to drive the rotating shaft 10 to rotate. Preferably, the rotating shaft driving member 12 in this embodiment is erected on the side wall of the fixed box 9 and located outside the two bending devices 2, so as to avoid interference when the two bending devices 2 slide toward the middle, and facilitate other related components installation. In addition, the rotating shaft driving member 12 can also be erected on the top of the fixed box 9 or on the side wall opposite to the side wall where the extending end of the rotating shaft 10 is located. The swing mechanism 13 is connected with the rotating shaft 10, and the piece to be bent located on the bending base 11 is pressed by the swing mechanism 13, and rotates and swings 90 degrees around the rotating shaft 10, thereby bending the piece to be bent.

Please refer to Fig. 6 and Fig. 7, bending base 11 is a columnar body, and columnar body comprises two straight side wall surfaces 14 perpendicular to each other, the rounded surface 15 that is connected at the corner of two straight side wall surfaces 14, is connected at two The straight side wall surface 14 and the arc surface 16 opposite to the rounded surface 15 , and the wall surfaces 17 at both ends. A lower bending groove 18 is recessed on the cylindrical body at the arc surface 16, and the lower bending groove 18 is arranged around the arc surface 1 for accommodating the bending part of the piece to be bent. The number of the lower bending groove 18 is at least one, and the number of the lower bending groove 18 in this embodiment is two, so as to bend the two pieces to be bent simultaneously. A mounting hole 19 is opened on the columnar body, and the mounting hole 19 runs through the walls 17 at both ends, and one end of the rotating shaft 10 is fixedly connected to the mounting hole 19 to securely connect the bending base 11 to the rotating shaft 10 . When in use, when a straight side wall surface 14 of the two opposite bending bases 11 is in a horizontal state, the arc surface 16 of each bending base 11 is located outside the two bending bases 11, and is located on the flat surface in the horizontal state. Above the straight side wall surface 14, the piece to be bent is placed in the lower bending groove 18. After bending, the rotating shaft 10 drives the bending base 11 to rotate a preset angle, so that the bending part of the piece to be bent is folded from the bottom The bending part of the ejected piece to be bent is carried on a straight side wall surface 14, so that the fixed box 9 drives the rotating shaft 10 and the bending base 11 to slide to the next bending station. Bending action.

Please refer to Fig. 2, when the rotating shaft driving member 12 is erected on the side wall of the fixed box body 9 and is located on the outside of the sliding direction of the two bending devices 2, or when it is located on the top of the fixed box body 9, the rotating shaft transmission mechanism adopts driven gears and driving gears. The rotating shaft driver 12 adopts a driving cylinder with a piston rod, and the driven gear is fixed on the rotating shaft 10 at one end inside the fixed box body 9, the driving rack is engaged with the driven gear, and one end of the driving rack is connected to the driving cylinder. The piston rod is connected, and the other end is telescopically passed through the side wall of the fixed box 9. The drive cylinder drives the active rack to move back and forth, thereby driving the rotating shaft 10 to rotate forward/reversely by a preset angle.

When the rotating shaft driving member 12 is erected on the side wall opposite to the side wall where the extending end of the rotating shaft 10 is located. The rotating shaft transmission mechanism adopts a driving wheel, and the driving wheel is fixedly connected to one end of the rotating shaft 10 inside the fixed box body 9. The rotating shaft driving part 12 adopts a servo motor with a driving wheel, and the driving wheel of the servo motor is connected with the driving wheel through a transmission belt, or the driving The wheel and the drive wheel mesh with each other, and the servo motor drives the rotating shaft 10 to rotate forward/reversely at a preset angle through the drive wheel.

Referring to Fig. 8, the swing mechanism 13 includes a swing arm 20, a gear plate (not shown) and a swing drive member 22. The swing arm 20 has a cylindrical portion 23 and an arm body extending from the outer peripheral wall at one end of the cylindrical portion 23. part 24, a gear plate (not shown) is fixedly connected to the end opposite to the arm body part 24 on the cylindrical part 23, and the cylindrical part 23 is rotatably sleeved on the rotating shaft 10 and is located at the bending base 11 and the fixed box body 9 Between, one end with the arm body portion 24 on the cylindrical part 23 is located outside the fixed box body 9, and one end of the cylindrical part 23 fixedly connected with the gear plate passes through the side wall of the fixed box body 9 and extends into the fixed box body 9. Inside, the swing driving part 22 is erected on the top of the fixed box body 9, and the telescopic end of the swing driving part 22 is connected with a lifting rack meshed with the gear plate, so that the swing driving part 22 drives the swing arm 20 to rotate a preset angle through the lifting rack. . In this embodiment, the rotation angle is 90 degrees, so that the piece to be bent is bent with a 90-degree fillet.

Referring to Fig. 2 and Fig. 3, the swing mechanism 13 also includes an extruding driver 25, a quick clip structure 26, a connecting block 27 and a bending die 28, and the arm body portion 24 of the swing arm 20 is installed at an end far away from the cylindrical portion 23. There is an extrusion driver 25, the telescoping end of the extrusion driver 25 is connected to the upper end of the quick clip structure 26, the connecting block 27 is connected to the lower end of the quick clip structure 26, and the bending die 28 is slidably arranged under the connecting block 27, bending The mold 28 is provided with upper bending grooves 29 corresponding to the lower bending grooves 18 , and the number of the upper bending grooves 29 is consistent with the number of the lower bending grooves 18 . The action process is that the extrusion driver 25 drives the bending die 28 to press against the bending base 11 through the quick clamp structure 26, and the quick clamp structure 26 can ensure that the bending die 28 and the bending base 11 are pressed against each other without loosening , the bending die 28 and the bending base 11 clamp the piece to be bent, and under the action of the rotation of the swing arm 20, the piece to be bent is bent. During this rotation, the bending die 28 is subjected to Under the action of the rotation change of the position of the force point, it slides correspondingly along the connecting block 27 to protect the piece to be bent from being scratched and avoid deformation of the piece to be bent.

Please refer to Fig. 3 and Fig. 4, quick clip structure 26 comprises hinge base 30, two hinge plates 31, three hinge shafts 32 and two connecting rods 33, and hinge base 30 is installed on the arm body portion 24 of swing arm 20 and is positioned at extrusion drive. At the telescopic end of part 25, each hinge plate 31 is in a triangular shape, and each hinge plate 31 is provided with three hinge holes in a triangle shape. The shaft 32 is set in the hinge hole corresponding to the outside of the hinge seat 30, and there is also a hinge shaft 32 which is respectively hinged to one end of the two connecting rods 33 on the two hinge plates 31 and is located below the hinge seat 30. The other ends of the two connecting rods 33 have Pin shaft, two connecting rods 33 are hinged on both sides of the connecting block 27 through the pin shaft, and the telescopic end of the extrusion driver 25 is connected with the hinge shaft 32 positioned at the outside of the hinge seat 30 to drive the two hinge plates 31 around the hinge seat 30 rotates upward or downward, when the hinge shaft 32 on the hinge seat 30, the hinge shaft 32 below the hinge seat 30 and the pin shafts of the two connecting rods 33 are on the same straight line, the quick clip structure 26 is in the dead point position, That is to say, in the state of downward compression, no matter how much the reaction force is, it cannot be released. This is the dead point clamping principle in mechanical mechanics.

Please refer to Fig. 2 and Fig. 5, the positioning device 3 includes a central positioning assembly 34 and two sets of end positioning assemblies 35, the central positioning assembly 34 includes a central positioning frame 36, a central positioning driver 37, a central upper positioning block 38 and a central lower positioning Block 39, the middle part positioning frame 36 is erected on the middle part on the support 1, the middle part positioning drive part 37 is installed on the front side wall of the middle part positioning frame 36, and the upper positioning block 38 in the middle part is fixedly connected to the lifting end of the middle part positioning drive part 37 bottoms, the middle part The lower positioning block 39 is installed on the middle positioning frame 36 and is located directly below the upper middle positioning block 38. The upper middle positioning block 38 and the lower middle positioning block 39 are provided with at least one middle positioning groove 40 corresponding to the upper and lower sides; please refer to FIG. 2 And Fig. 3, each end positioning assembly 35 comprises fixed column 41, end positioning driver 42, end upper positioning block 43, fixed seat 44 and end lower positioning block 45, and fixed column 41 and fixed seat 44 correspond up and down respectively Installed on the front side wall of the fixed box body 9, the end positioning driver 42 is installed on the front side wall of the fixed column 41, the upper positioning block 43 on the end is affixed to the lifting end at the bottom of the end positioning driver 42, and the lower end The positioning block 45 is installed on the front side wall of the fixed seat 44 and is located directly below the upper positioning block 43 on the end. The upper positioning block 43 and the lower positioning block 45 on the end are all provided with at least one corresponding end positioning groove 46 up and down. The end positioning groove 46 and the upper middle positioning groove 40 are located on the same horizontal line, and the lower end positioning groove 46 and the lower middle positioning groove 40 are located on the same horizontal line, so as to clamp and position the bending piece up and down. Inside the middle positioning groove 40 and the end positioning groove 46 .

More specifically, the middle positioning component 34 positions the middle part of the piece to be bent in a clamping manner. Since the two fixed boxes 9 can slide back and forth relative to each other, the end positioning components 35 respectively fixed on the two fixed boxes 9 It can be slid to position near the preset bending position at both ends of the piece to be bent, making the positioning more stable during the bending process.

Further, referring to Fig. 5 , the middle positioning assembly 34 also includes a sliding plate 47 and a top adjustment structure 48, the sliding plate 47 can be lifted and slidably installed on the front side wall of the middle positioning frame 36, the middle positioning drive member 37, the middle upper positioning block 38 and the middle lower positioning block 39 are correspondingly installed on the front side plate surface of the sliding plate 47, and the top of the middle positioning frame 36 has a convex portion 49 stretching forward, and a top adjustment structure 48 is installed on the convex portion 49 for adjusting The up and down positions of the sliding plate 47 make the positioning positions of the middle positioning assembly 34 and the end positioning assembly 35 be on the same horizontal line.

The top adjustment structure 48 includes an adjustment screw 50 and an adjustment nut 51. A screw hole is provided on the convex portion 49. The bottom end of the adjustment screw 50 passes through the screw hole and is connected with the sliding plate 47. The adjustment nut 51 is screwed on the adjustment screw 50. And the bottom end surface of the adjusting nut 51 is held against the top surface of the convex portion 49, by rotating the adjusting screw 50, the up and down position of the sliding plate 47 can be adjusted, and then the adjusting nut 51 is rotated to fix it completely after being adjusted to a suitable position.

2 and 3, the end positioning assembly 35 also includes a slider 52 and a bottom adjustment structure 53, the slider 52 can be lifted and slidably installed on the front side wall of the fixed seat 44, and the lower positioning block 45 at the end is fixed on the slider. On the block 52 , a bottom adjustment structure 53 is installed on the bottom of the fixed seat 44 for adjusting the up and down position of the slider 52 , and the bottom adjustment structure 53 has the same structure as the top adjustment structure 48 .

The positioning device 3 also includes a positioning plate (not shown), the positioning plate is installed on any fixed box body 9, in order to avoid the swing arm 20 interfering with the positioning plate during the swing process, the positioning plate should extend out of the fixed box body 9 preset distance. The horizontal position of the positioning plate corresponds to the horizontal position of the lower positioning block 39 in the middle and the lower positioning block 45 at the end, so that one end of a number of parts to be bent is held against the positioning plate, so that a number of parts to be bent are aligned and accommodated on the positioning plate. The preset positions in the middle positioning groove 40 and the end positioning grooves 46 at both ends.

Please refer to Fig. 2, the positioning device 3 also includes a misalignment guide structure 54, the guide structure 54 is installed on the machine base 1 and is located at the preset position directly below the middle lower positioning block 39, so that the parts to be bent can be bent into During the process of the frame body part, the two ends of the bottom of the frame body part that are in contact with each other are squeezed to cause deformation of the frame body part.

The dislocation guide structure 54 includes a bottom plate 55, a partition guide block 56 and two combined guide blocks 57. The bottom plate 55 extends sideways on the front side wall of the machine base 1, and the partition guide block 56 protrudes from the bottom plate 55 and is located in the length direction of the machine base 1. One end of the separation guide block 56 has a protruding tip near the end of the edge of the bottom plate 55, so as to separate the bottoms of one end of the two frame parts; The other end of the two merging guide blocks 57 is separated by a predetermined distance, and the two merging guide blocks 57 are respectively symmetrically distributed on the front side and the rear side of the partition guide block 56, and the end of the two merging guide blocks 57 near the edge of the bottom plate 55 is provided with an inlet. , the introduction port gradually becomes smaller from the outside to the inside, so that it can be introduced into the bottom of the other end of the two frame parts and clamped between the two combined guide blocks 57 .

Referring to Fig. 2 and Fig. 5, the unloading device 4 includes a connection plate 58, two discharge guide rods 59, a jacking seat 60 and a discharge driver 61, and the connection plate 58 is installed on the front side wall of the middle lower positioning block 39, Two discharge guide rods 59 are installed on the two ends of the top of the connecting plate 58 inclined downwards, the jacking seat 60 is mounted on the bottom of the lower positioning block 39 in the middle, and the body of the discharge driver 61 is mounted on the jacking plate in a liftable manner. At the bottom of the seat 60, the piston rod of the unloading driver 61 passes through the bottom of the jacking seat 60 and is fixedly connected with the lower positioning block 39 in the middle. Because the piston rod of the unloading driver 61 is affixed to the sliding plate 47 through the lower positioning block 39 in the middle, under the driving action of the unloading driver 61, the body of the unloading driver 61 is lifted upward together with the jacking seat 60, and the The frame body parts on the lower positioning block 39 in the middle are jacked up, and the frame body parts that have been lifted out slide down to two discharge guide rods 59 to complete the discharge. In this way, automatic unloading is realized and production efficiency is improved.

Further, the jacking seat 60 includes two opposite push plates 62 and a jacking plate 63 integrally connected with the bottoms of the two push plates 62. The two push plates 62 are mounted on both sides of the lower positioning block 39 in a liftable manner, and the unloading drive The piston rod of the part 61 passes through the lifting plate 63 and is fixedly connected with the positioning block 39 at the middle part, and the unloading driving part 61 body is fixedly connected with the lifting plate 63 . In this embodiment, the method of fixing the piston rod of the unloading driving member 61 is used to drive the unloading, which is convenient for installing the unloading device 4 in a narrow space. The unloading driver 61 drives two push plates 62 to lift upwards, and the two push plates 62 will push out the frame body part placed on the lower positioning block 39 in the middle.

Further, the two push plates 62 have slopes 64 inclined to one side of the two discharge guide rods 59 , so that the lifted frame parts slide down onto the two discharge guide rods 59 .

Furthermore, the downwardly inclined ends of the two discharge guide rods 59 have upwardly bent hooks 65 for hanging the frame parts.

The action process of the four-corner frame bending machine of the present utility model is as follows:

In the first step, place the piece to be bent on the middle lower positioning block 39 and the two end lower positioning blocks 45;

In the second step, the upper positioning block 38 in the middle is pressed down to position the bending piece;

In the third step, the two bending devices 2 slide outward to the bending positions near the two ends of the piece to be bent, and the two bending bases 11 rotate to the position where the lower bending grooves 18 on the two ends are facing upwards. Positioning blocks 43 respectively press down on the two ends of the piece to be bent for positioning;

In the fourth step, the two bending molds 28 are respectively pressed down on the respective bending bases 11, and the two bending molds 28 are respectively rotated 90 degrees to perform the first round corner bending near the two ends of the part to be bent. , the positioning blocks 43 on the two ends rise, and the two bending molds 28 return to their original positions;

In the fifth step, the two bending bases 11 are rotated 90 degrees, and the piece to be bent is withdrawn from the lower bending groove 18, and the two bending devices 2 slide inward to the bending position in the middle of the piece to be bent, and the second straight circle is performed. Corner bending, the action process of the second straight round corner bending is the same as that of the first straight round corner bending;

In the sixth step, after the second right fillet bending, the upper positioning block 38 in the middle and the upper positioning blocks 43 at the two ends are lifted out of the positioning state, and the jacking seat 60 is lifted out of the bent frame to complete the whole bending bending process.

To sum up, the four-corner frame bending machine of the utility model is provided with two bending devices 2 , a positioning device 3 and an unloading device 4 , so that the four-corner frame bending machine has a simple structure, easy operation and high production efficiency.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the content of the utility model description, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. a kind of automation quadrangle frame bending machine, including base (1), apparatus for bending (2) and device for discharging (4), which is characterized in that There are two the apparatus for bending (2) sets, two apparatus for bending (2) opposite can be slidingly arranged at the both ends on base (1), and being used for will 90 degree of bendings twice are relatively symmetrically carried out to bending part and form receptacle, and two apparatus for bending (2) respectively slide to bending part two Default bending position at end carries out 90 degree of bendings for the first time, and then two apparatus for bending (2) respectively slide to in the middle part of bending part Default bending position carry out second 90 degree of bendings；Device for discharging (4) is installed in the middle part of base (1), for bending is good Receptacle is sent out.

2. automation quadrangle according to claim 1 frame bending machine, which is characterized in that the quadrangle frame bending machine further includes two sliding Motivation structure (5), each apparatus for bending (2) are slidably disposed on base (1) by each sliding equipment (5), each sliding Mechanism (5) includes two sliding rails (6), lead screw (7) and lead screw actuator (8), and two sliding rails (6) are set in parallel on base (1), from One end of base (1) extends to medium position, and apparatus for bending (2) is slidingly arranged on two sliding rails (6), one end of lead screw (7) It is rotatably connected with apparatus for bending (2) bottom, the other end is connect with lead screw actuator (8), and lead screw actuator (8) is fixedly installed in One end on base (1).

3. automation quadrangle according to claim 2 frame bending machine, which is characterized in that each apparatus for bending (2) is wrapped Include static housing (9), shaft (10), bent base (11), shaft actuator (12), rotation shaft driving mechanism and swing mechanism (13), the bottom of static housing (9) is slidedly arranged on two sliding rails (6), and the output end of lead screw (7) and the bottom of static housing (9) connect It connecing, one end of shaft (10) is rotatablely arranged in static housing (9), and the other end is stretched out from the front side wall of static housing (9), The extension end of shaft (10) is connected with bent base (11), and shaft actuator (12) is set up in the upper of static housing (9), and shaft passes Motivation structure is set to the inside of static housing (9), and shaft actuator (12) is connect by rotation shaft driving mechanism with shaft (10), puts Motivation structure (13) is connect with shaft (10), by swing mechanism (13) compress be located at bent base (11) on to bending part, and 90 degree of (10) rotary oscillation around the shaft, thus will be to bending part bending.

4. automation quadrangle according to claim 3 frame bending machine, which is characterized in that the bent base (11) is a column Body, column include orthogonal two flat sides wall surface (14), are connected to the fillet of the corner of two flat side wall surfaces (14) Face (15) is connected to two flat side wall surfaces (14) and the arc surface (16) and both ends wall surface (17) opposite with hollows (15)； It is located at arc surface (16) on column and is recessed with lower bending slot (18), lower bending slot (18) is arranged around arc surface (16), uses To accommodate the bending part to bending part；The number of lower bending slot (18) at least one, offered on column mounting hole (19), pacify It fills hole (19) and runs through both ends wall surface (17), one end of shaft (10) is fixed in mounting hole (19).

5. automation quadrangle according to claim 3 frame bending machine, which is characterized in that the swing mechanism (13) includes swing arm (20), there are cylindrical portion (23) and a side to stretch in cylindrical portion (23) one end for toothed disc and wobble drive part (22), swing arm (20) Periphery wall arm body portion (24), one end opposite with arm body portion (24) is connected with toothed disc, cylindrical portion in cylindrical portion (23) (23) it is rotationally sheathed on shaft (10) between bent base (11) and static housing (9), cylindrical portion has on (23) There is the one end in arm body portion (24) to be located at static housing (9) outside, one end that toothed disc is connected in cylindrical portion (23) is set to fixed case In body (9), wobble drive part (22) is set up at the top of static housing (9), and the telescopic end of wobble drive part (22) is connected with and tooth The lifter rack of wheel disc engagement.

6. automation quadrangle according to claim 5 frame bending machine, which is characterized in that the swing mechanism (13) further includes squeezing Actuator (25), quick clamping structure (26), link block (27) and Bending Mould (28) are pressed, in the arm body portion (24) of swing arm (20) One end far from cylindrical portion (23), which is equipped with, squeezes actuator (25), squeezes the telescopic end and quick clamping structure of actuator (25) (26) upper end connection, link block (27) are connect with the lower end of quick clamping structure (26), and Bending Mould (28) is slidedly arranged on link block (27) below, upper bending slot (29) corresponding with lower bending slot (18) is offered on Bending Mould (28), upper bending slot (29) Number is consistent with the number of lower bending slot (18).

7. automation quadrangle according to claim 6 frame bending machine, which is characterized in that the quick clamping structure (26) includes hinge Joint chair (30), two articulated slabs (31), three articulated shafts (32) and two connecting rods (33), hinged seat (30) are installed on the arm body of swing arm (20) It is located at the telescopic end for squeezing actuator (25) in portion (24), is in hinged there are three triangular shape opens up on each articulated slab (31) Hole, two articulated slabs (31) are articulated on hinged seat (30) by an articulated shaft (32), and an articulated shaft (32) is arranged in hinged seat (30) in the corresponding hinge hole in outside, one end of two connecting rods (33) is articulated with two articulated slabs respectively there are also an articulated shaft (32) (31) it is located at the lower section of hinged seat (30) on, the other end of two connecting rods (33) has pin shaft, and two connecting rods (33) are hinged by pin shaft Two sides on link block (27), the telescopic end for squeezing actuator (25) connect with the articulated shaft (32) being located on the outside of hinged seat (30) It connects, to drive two articulated slabs (31) to rotate upward or downward around hinged seat (30).

8. automation quadrangle according to claim 1 frame bending machine, which is characterized in that the device for discharging (4) includes connection Plate (58), two discharging guide rods (59), jacking seat (60) and discharging actuator (61), two discharging guide rods (59), which dip down, tiltedly to be installed Both ends at the top of connecting plate (58), jacking seat (60) are liftably set up on base (1), and jacking seat (60) is located at connecting plate (58) side opposite with two discharging guide rods (59) on, discharging actuator (61) ontology are liftably installed on jacking seat (60) bottom Portion, the piston rod of discharging actuator (61) pass through jacking seat (60) bottom, and the piston rod fixed frame of discharging actuator (61) is set to On base (1).

9. automation quadrangle according to claim 8 frame bending machine, which is characterized in that the jacking seat (60) includes two opposite Push plate (62) and raising plate (63) with two push plates (62) bottom integrally connected, the piston rod liftable of discharging actuator (61) Ground is arranged in raising plate (63), and discharging actuator (61) ontology and raising plate (63) are affixed.

10. automation quadrangle according to claim 9 frame bending machine, which is characterized in that two push plates (62) have to two Discharging guide rod (59) inclined inclined-plane in side (64), one end that the two discharging guide rods (59) tilt down have upward bending Hook portion (65).