CN107695682B - Machine for improving automatic feeding bending efficiency - Google Patents

Abstract

The invention relates to a machine for improving automatic feeding and bending efficiency, which comprises a servo feeding device, a bending forming device, a turnover system, a frame fixing system and a machining center, wherein the servo feeding device is used for driving a material to advance to the bending forming device; or/and before driving the material into the bending forming device, carrying out butt joint technology pre-forming on the two ends of the material; and/or the servo feeding device stably conveys the materials with quantitative fixed values to the bending forming device through a stepping motor, a servo motor and a hydraulic pump driving piston, a chuck or a roller feeding system; the bending forming device is used for bending the material into a required frame structure 01 through matching of the bending outer die 41 and the bending inner die 42; the turnover system is used for moving or rotating the frame structure 01 and the turnover mould in any direction; and the machining center is provided with any axial machining tool equipment, and holes or welding is performed on the frame structure by utilizing different machining equipment.

Description

Machine for improving automatic feeding bending efficiency

Technical Field

The invention relates to a machine for improving automatic feeding and bending efficiency, in particular to a machine for manufacturing a digital device frame, wherein the digital device frame comprises a smart phone, a mobile phone protection frame, a television frame and a tablet personal computer frame.

Background

The existing digital equipment shells are divided into an all-plastic shell and an all-metal shell according to the types, wherein the traditional digital mobile phone is mainly a plastic integrated shell, the existing smart mobile phone is mainly formed by combining a frame and a back cover through an injection molding encapsulation process, and the existing technology has the following defects:

1. the prior art has complicated and complex processing technology, often needs up to tens of or even hundreds of working procedures under the condition of forming a complete frame body, and needs continuous process conversion and positioning modes, so that the cost is high and the yield is low.

2. In the prior art, when a metal shell and a metal frame are manufactured, CNC cutting processing is performed after bending from lump materials or extrusion materials, the number of processing times is long, more waste materials are generated, the requirement on processing machines is high when the shape is complex, especially, more processing time is required for products with inner and outer cambered surfaces, or more than three shafts of processing machines are adopted, holes are formed in a numerical control cutter cutting mode, and the processing time is long and the cost is high.

3. The sectional metal frame or the shell needs a plurality of processing techniques, and finally, each disconnecting structure needs to be jointed through injection molding, so that continuous automatic production is difficult to realize.

4. The strip material bending frame technology in the prior art can carry out continuous processing, but most of the technology only ends in forming the frame body in an external mode, is sleeved into a die in other working procedures after blanking and is continuously processed, and the advanced automation degree of blanking and using or structure assembly is not realized.

5. In the prior art, the modularized accessory is realized by mostly cutting and injecting glue to a metal frame or a metal shell after the frame body is formed, and processing the corresponding implantable position of the module, the module is implanted into the corresponding position by a semi-automatic or full-automatic mechanical arm, and the process is split, so that the time is wasted and the cost is increased.

6. When the inner side of the metal shell or the metal frame body needs to be subjected to vertical or geometric machining procedures such as cutting, drilling, tapping and the like, the product can interfere with a machining tool or a mechanical arm, so that machining is difficult, the frame structure (01) is often required to be split into two or even more than three pieces to meet machining requirements, the problems of obvious joints, increased working hours and reduced strength are caused, production is not facilitated, and modular robot changing automation is difficult to realize.

7. In order to save materials during manufacturing a metal frame in the prior art, an extrusion material or a soft plastic aluminum material is often used for cold forging so as to save materials and processing time, but because the material capable of being extruded or cold-forged must have good ductility, the hardness and strength of the material cannot be increased through heat treatment, the frame must be thickened to maintain the strength, but the weight of the mobile phone is increased, the space for accommodating electronic parts is further reduced, and the limitation on design and light weight is caused.

Disclosure of Invention

The invention designs a machine for improving automatic feeding and bending efficiency, which solves the technical problems that the processing technology in the prior art is complex and complex, often needs up to tens of or even hundreds of working procedures under the condition of forming a complete frame body, and needs continuous process conversion and positioning modes, so that the cost is high and the yield is low.

In order to solve the technical problems, the invention adopts the following scheme:

the utility model provides an improve crooked efficiency's of automatic pay-off machine, includes servo feedway, bending device, turnover system, framework fixing system and machining center, its characterized in that:

the servo feeding device is used for driving the material to advance to the bending forming device; or/and before driving the material into the bending forming device, carrying out butt joint technology pre-forming on the two ends of the material; and/or the servo feeding device stably conveys the materials with quantitative fixed values to the bending forming device through a stepping motor, a servo motor, a hydraulic pump driving piston, a chuck or a roller feeding system;

the bending forming device is used for bending materials into a required frame structure (01) through matching of a bending outer die (41) and a bending inner die (42);

The turnover system is used for moving or rotating the frame structure (01) or a combination of the frame structure (01) and the turnover mould in any direction;

the machining center is provided with machining tool equipment in any axial direction, and holes or welding machining is performed on the side frame structure (01) by utilizing different machining equipment.

Further, the turnover system is provided with a circulating movement device (888), and the circulating movement device (888) is used for demolding the frame structure (01) or/and the turnover mould (892) from the fixed mould (891) and moving to the processing center (992); the turnover mould (892) is any one of a bending outer mould (41) or a bending inner mould (42) of the bending forming device; when the turnover mould (892) is a bending external mould (41), the fixed mould (891) is a bending internal mould (42); when the turnover mould (892) is a bending inner mould (42), the fixed mould (891) is a bending outer mould (41).

Further, the circulating movement device (888) is provided with a working arm (8881), one end or one surface of the working arm (8881) is connected with a circulating die (892), the other end or one surface of the working arm (8881) is connected with another circulating die (892), and the working arm (8881) rotates to enable different circulating dies (892) or a combination of the circulating die (892) and a frame structure (01) to be shifted from a bending area of the bending forming device to a processing area of the processing center;

Or/and, the turnover mould (892) is movable on the working arm (8881) so that the turnover mould (892) or the combination of the turnover mould (892) and the frame structure (01) moves between a fixed mould and a set position and between the machining center and the set position in a rotary or random axial movement mode.

Further, the machining center (992) is connected with a frame fixing device (991), and the frame fixing device (991) is used for connecting a frame structure (01) moving along with the turnover mould (892), and is fixed by positioning through an adsorption structure or a magnetic attraction structure or a concave-convex structure or is clamped and fixed through an upper mould (991D); the frame body fixing device (991) is provided with a convex groove or a concave groove or a local clearance space (991B) which is in accordance with the internal or external shape of the frame structure (01); the frame fixing device base (991A) and/or the positioning pin key (991C) are/is used for fixing the frame fixing device (991) and the frame structure (01) or the encapsulation mould; the frame fixing device (991) is of a fixed structure or a rotatable structure.

Further, the machining center (992) is provided with one or more of a fixed cutting tool (2), a numerical control tool machining center (26), a tapping tool (27) and an inner and outer punching die (28), and is a reciprocating type or swing arm type or rotary type device, the shape of the inner side, the outer side or any side of the frame structure (01) is machined, or/and any one or more of a positioning hole (20A), a groove (20B), a hanging buckle hole (20C) and a rice-shaped interference hole (20D) are formed, an insertion part corresponding to the positioning hole (20A) is a positioning pin (991C), an insertion part corresponding to the groove (20B) is a modularized assembly (201B), an insertion part corresponding to the hanging buckle hole (20C) is a hanging buckle (201C), and an insertion part corresponding to the rice-shaped interference hole (20D) is a nut (201D).

Further, the device also comprises a material preparation device and/or a material forming device;

the material preparation device is used for straightening the material before the material enters the servo feeding device;

the material forming device performs any one or more of material section forming, combination between the same materials, combination between different materials, preprocessing before bending the inner wall and the outer wall of the material and modular part implantation before the material enters the servo feeding device.

Further, the bending outer die (41) and the bending inner die (42) are bent by one of the following four bending modes:

a-1: a unidirectional single-angle repeated bending mode is adopted, and servo feeding is assisted;

clamping a workpiece by a bending outer die (41) and a bending inner die (42) which are attached with materials, processing a bent angle after rotating along a bending direction to form a first bent angle, conveying the materials forwards by a servo feeding device (30), pushing the bent point forwards, repeating the steps until four bent angles are completed, controlling the bending position by a continuous feeding system, enabling the outer frame to be continuously bent into four corners at one time, and controlling the size and the dimension of the outer frame structure (01) by a feeding distance;

A-2: the unidirectional polygonal rolling bending mode does not assist servo feeding;

clamping a workpiece by a bending outer die (41) and a bending inner die (42) which are attached with materials, processing a first bending angle after rotating along a bending direction according to a first rotating shaft center (421), processing a second bending angle after rotating along the bending direction according to a second rotating shaft center (422), processing a third bending angle after rotating along the bending direction according to a third rotating shaft center (423), processing a fourth bending angle after rotating along the bending direction according to a fourth rotating shaft center (424), and pulling the workpiece to advance by rotating force, so that the outer frame structure (01) surrounds the bending inner die (42);

a-3: unidirectional polygonal rolling bending and auxiliary servo feeding;

clamping a workpiece by a bending outer die (41) and a bending inner die (42) which are attached with materials, processing a first bending angle after rotating along a bending direction according to a first rotating shaft center (421), processing a second bending angle after rotating along the bending direction according to a second rotating shaft center (422), processing a third bending angle after rotating along the bending direction according to a third rotating shaft center (423), processing a fourth bending angle after rotating along the bending direction according to a fourth rotating shaft center (424), and conveying materials with a certain distance forwards by a servo feeding device (30) before rotating any shaft center, so that the size of an outer frame structure (01) is larger than that of the bending inner die (42);

A-4: multidirectional polygonal or unidirectional polygonal bending;

the mechanical equipment is provided with a bending outer die 41 and a bending inner die (42) with a plurality of bending angles, the rotation axes of the bending angles are horizontally arranged, a swing arm 425 is arranged between the axes, a workpiece is clamped by corresponding inner and outer dies before bending, a first bending angle is processed after the first rotation axis (421) rotates along the bending direction, and a second bending angle is processed after the second rotation axis (422) rotates along the bending direction; or/and according to the third rotation axle center (423) along the bending direction rotation processing third place bent angle, according to the fourth rotation axle center (424) along the bending direction rotation processing fourth place bent angle, through axle center rotation or swing arm rotation realization bending for frame structure (01) encircles or laminating on bending centre form (42), perhaps after arbitrary bent angle shaping, send out the material of fixed length through servo pay-off in order to control bending point position, and cut off the material after bending centre form and bending external mold centre gripping are fixed, and frame structure (01) size is greater than bending centre form (42).

Further, punching holes, punching tools and a material supporting plate are arranged on the bending outer die (41) and the bending inner die (42), punching or cutting operation is performed before bending or after bending, when the bending outer die (41) and the bending inner die (42) are clamped and closed, force is applied to the punching tools by using a hydraulic piston or a pneumatic cylinder driving device, the punching tools are used for punching the shapes and the holes of materials, or the cutting tools on the numerical control mechanical arm are used for processing the shapes and the holes of the frame structure (01), so that the hole and the corner accuracy of each material are ensured to be in a relatively precise range, and a discharge groove is formed in the bottom of the die punching hole.

Furthermore, an angle fixing device (68) is arranged at any bent angle or any side of the frame structure (01), the angle fixing device (68) is provided with a device A and a device B, two sides of which are mutually combined, one of the device A and the device B is a hole, and the other is a buckle, and the buckle is used for bending and forming to keep a fixed angle, so that the frame body is prevented from being skewed or excessively large in tolerance due to the influence of metal elasticity after the die is released; the device A and the device B are in direct contact or indirect contact or lamination, and a device C is arranged at any position where the device A and the device B are connected for fixing or positioning, wherein the device C is a stud, a nut, a pin key, welding flux, a bridging device or a sleeve.

Further, the working arm (8881) is driven to rotate or axially move by a servo motor drive, a hydraulic drive, a mechanical transmission or a pneumatic drive, the frame body fixing device (991) rotates or the turnover mould (892) moves along the working arm (8881);

or/and, the processing center utilizes different cutting tools, tapping tools, grinding wheels or punching tool bits to process the inside and outside of the frame structure (01), process holes or weld;

Or/and, the movement generated among the working arm (8881), the processing center (992) and the frame body fixing device (991) is an active movement or a passive movement matching relation.

The machine and the method for improving the automatic feeding and bending efficiency have the following beneficial effects:

(1) The invention realizes the automation of continuous feeding, processing, bending and blanking processes by an automatic feeding bending technology, simplifies the processing process, reduces the cutting quantity of materials, reduces the man-hour and the bad factors of human intervention, combines the characteristics of geometric pre-forming and the like, improves the problems, and ensures that the prior art is more sophisticated and stable.

(2) The invention realizes the automation of continuous feeding, processing, bending and blanking processes by an automatic feeding and bending technology, so that a plurality of sectional metal frames can be produced simultaneously, and the continuous feeding, processing, bending and blanking processes mentioned in the creation of the invention are adopted to be automatic, so that the sectional metal frames are integrated into an integrated metal frame, the problems are improved, and the prior art is more advanced and stable.

(3) The invention improves the sectional processing technology in the prior art by an automatic feeding and bending technology, integrates a plurality of sections of technology, realizes the automation of continuous feeding, processing, bending and blanking processes, realizes the integrated technology of pre-processing before bending, punching after bending and cutting after bending, ensures the precision of continuous processing and reduces the dependence on personnel.

(4) According to the invention, the modularization and corresponding locking accessories can be implanted before blanking by an automatic feeding bending technology, implantation after blanking is not needed, or the modularization process is split, part of the modularization process is realized before blanking, part of the modularization process is realized after frame body forming, part of the modularization process and the cost are reduced, a pipe body pre-cutting technology is matched, the hole at the special-shaped bottom is cut, the size and the thickness of the bottom of a blind hole at the outer part or the inner part of the frame are ensured, and the automation of modularized robot replacement is realized.

(5) The invention adopts a novel technology of coating the inner manganese steel with the tubular coating strip material, the double-layer material and even the outer memory metal, so that the appearance modification and the processing are easy, but the strength is improved by the built-in framework, so that the two defects of low strength and heavy weight are overcome, and the advantages of easy processing and strength improvement are combined.

Drawings

Fig. 1: the equipment used in the material preparation stage and the material schematic diagram thereof are provided;

fig. 2: the equipment used in the material forming stage is shown schematically;

fig. 3: the material punching schematic diagram in the material forming stage of the invention;

fig. 4: the invention relates to a unidirectional single-angle repeated bending working schematic diagram;

Fig. 5: the invention relates to a unidirectional polygonal rolling bending working schematic diagram;

fig. 6: the invention relates to a unidirectional polygonal rolling bending feeding working schematic diagram;

fig. 7: the invention relates to a two-way double-angle or multi-way multi-angle bending working schematic diagram;

fig. 8: in the invention, the first working mode of the circulating motion device is shown in the schematic diagram from the 01 st step to the 04 th step;

fig. 9: step 05 to step 08 of a first working mode of the circulating movement device in the invention is schematically shown;

fig. 10: step 09 to step 11 of the first working mode of the cyclic motion device are schematically shown in the invention;

fig. 11: step 01 to step 04 of a second working mode of the circulating motion device in the invention are schematic diagrams;

fig. 12: step 05 to step 08 of the second working mode of the circulating movement device in the invention is schematically shown;

fig. 13: step 09 to step 11 of the second working mode of the cyclic motion device are schematically shown in the invention;

fig. 14: the frame fixing device is structurally schematic;

fig. 15: fig. 14 is a partially enlarged schematic view at a;

fig. 16: the position of the angle fixing device is schematically shown in the invention;

fig. 17: the angle fixing device is structurally schematic.

Reference numerals illustrate:

01-a frame structure;

21-cold rolling forming rollers; 22-a cutting tool; 23-a grinding wheel; 24-driven wheel or pipe; 25-a back-fastening device; 26-a numerical control cutter machining center; 2-fixed cutting tool; 27-tapping machine tool; 28-inner and outer punching dies; 29-composite material of heterogeneous material;

31-a driving wheel;

41-bending the outer die; 42-bending the inner die; 421-a first axis; 422-a second axis; 423-a third axis; 424-a fourth axis; 425-swing arms;

888-circulatory movement means; 8881—working arm; 891-turnover mould; 892-fixing the mold;

991-frame fixing means; 991A-frame fixture base; 991B-a partially void space; 991c—dowel key; 992-a machining center;

68-angle fixing means; 69A-device a; 69B-device B; 69C-device C.

Detailed Description

The invention is further described with reference to fig. 1 to 17:

the method for improving the automatic feeding bending efficiency comprises the following steps:

as shown in fig. 1, S1 material preparation stage: the single material straightens the continuous straight strip material or coiled material through rollers, pipelines, belts and leveling machines and is supplied to the machine direction of the material forming stage S2.

When a plurality of materials are added according to the requirement, the machine tool and the materials are added to form two composite materials with the same materials or different materials, and the composite materials are supplied to the machine tool direction in the S2 material forming stage. The material in the S1 material preparation stage is continuous or sectional, the shape is round, rectangular, C-shaped, geometric shape and tubular, the material is aluminum, iron, steel, copper, stainless steel, memory metal or other plastic materials, the single material or more than two materials are the same material or different materials, the two materials are in an upper-lower lamination relationship, an outer tube flattening coating inner layer material relationship and an inner-outer partial coating combination relationship, the thickness of the single-layer material and the double-layer material is between 0.1mm and 30mm, and the material is adjusted according to different requirements of a final product.

S2, material forming stage: the material forming stage is provided with a cold-rolling forming roller 21 for forming, a cutting tool 22 for trimming the shape, a cutting wheel, a grinding wheel 23, a driving wheel 31 for driving the material to advance, or a driven wheel or a pipeline 24 for stabilizing the material to act on the material according to the product requirement.

When a plurality of materials are added according to the requirement, the machine tool and the materials are added, and the two composite material 29 structures of the same materials or different materials are formed by adopting a mode of separately forming and then combining or combining and then forming together, and are supplied to the machine tool direction in the S3 servo feeding stage, and one or more supply material strips are simultaneously supplied.

S3, servo feeding stage:

as shown in FIG. 1, the S3 servo feeding stage drives the material to advance through the driving wheel 31, or the material is controlled by the servo motor after being clamped by the driving wheels 31, so that the material can be linearly and stably fed to the next stage, and the S1 material preparation stage and the S2 material forming stage adopt continuous feeding, magazine feeding or mechanical arm grabbing feeding during the S3 servo feeding stage, and the material to be processed is continuously fed or intermittently fed by controlling the material to be processed during the S4 bending forming stage.

According to the processing requirement of the product, before the next process S4 bending and forming stage is implemented or before the frame body is bent, adding a staggered riveting and abutting technology to perform the process, cutting the continuous material in a punching, cutting tool or laser cutting mode, forming concave trapezoid buckles and convex trapezoid buckles at two ends of the broken material, inserting the male end and the female end into the socket, or forming other shapes capable of enabling the two ends to be finally connected and fixed, forming strip-shaped materials with required fixed lengths, and pre-burying solder according to the requirement of a final interface.

The S3 servo feeding stage is used for stably conveying materials with quantitative fixed values to bend according to the requirement of the S4 bending forming stage through a stepping motor, a servo motor, a hydraulic pump driving piston, a chuck and a roller feeding system, wherein the S4 bending forming stage is positioned in a certain distance from the feeding direction level after the bending forming of any position is completed, equipment for detecting feeding length and angle is arranged, when the S3 servo feeding stage continuously feeds materials, the equipment contacts or detects the L-shaped at the tail end in a switch contact, electrifying sensing or CCD electronic visual judgment mode, and when a probe or a probe rod of the equipment detects that a frame structure 01 touches or approaches to a set distance, the feeding length and the L-shaped tail end angle can be detected so as to ensure that each bending angle and feeding length are in a certain control range.

As shown in fig. 2, the S2 material forming stage is provided with a rolling wheel 21 for forming strips, a cutting tool 22 for trimming the shape, a rolling tool wheel, a grinding wheel 23, a polishing wheel, a knurling wheel and a wire drawing wheel, the contour of the frame structure 01 is trimmed by horizontal linear movement, and a driving wheel for driving the materials to advance or a driven wheel or a pipeline 24 for stabilizing the materials, when more than two materials or sectional materials are involved in the stage, the machines and the materials are added, and a mode of separately forming and then combining or combining and reforming is adopted to form composite materials of two same materials or different materials, and the composite materials are supplied to the machine direction of the S3 servo feeding stage, wherein when the outer layer materials are curled and coated, a back buckling device 25 is formed on the inner side, and the implantation of the subsequent modularized components or the back buckling position during the mobile phone assembly is realized through the reservation of the device.

As shown in fig. 3, in the step of forming the S2 material, an inner and outer wall pre-forming process is added, when the feeding axial direction is X, in the Y-axis direction or Z-axis direction or any direction perpendicular to the frame structure 01, a fixed cutting tool 2, a numerical control tool machining center 26, a tapping tool 27 or an inner and outer punching die 28 are arranged, and are reciprocating or swing arm type or rotating type equipment, the inner and outer wall pre-forming process is performed on the frame structure 01, the hidden trouble of difficult inner side processing, time consuming or insufficient positioning precision after bending forming is avoided, and positioning holes 20A, grooves 20B, hanging buckles 20C and m-shaped interference holes 20D with specific shapes are pre-formed through the inner and outer wall pre-forming process, the specific shapes are through holes, blind holes and special-shaped holes with circular, rectangular, elliptical or geometric shapes, and when the numerical control machining center is a multi-axial tool, such as the frame structure 01 has smaller size or the working procedure has to be separated in sequence, the feeding distance is controlled through a driving device of the S3 servo feeding stage, and the processing space is extended.

As shown in fig. 3, in the step of forming the S2 material, an inner and outer wall pre-forming process is added, when the feeding axial direction is X, in the Y-axis direction or Z-axis direction or any direction perpendicular to the workpiece, a fixed cutting tool 2, a numerical control tool machining center 26, a tapping tool 27 or an inner and outer punching die 28 are arranged, the inner and outer wall pre-forming process is performed on the workpiece by a reciprocating type or swing type or rotating type device, the hidden trouble of difficult inner side processing, time consuming or insufficient positioning precision after bending forming is avoided, and a positioning hole 20A, a groove 20B, a hanging buckle hole 20C and a m-shaped interference hole 20D with specific shapes are pre-formed by the inner and outer wall pre-forming process, the specific shapes are through holes, blind holes and special-shaped holes with circular, rectangular, elliptic or geometric shapes, and when the numerical control machining center is a multi-axial tool such as the workpiece has smaller size or the working procedure has to be separated in sequence, the feeding distance is controlled by a driving device of the step S3.

According to the positioning hole 20A, the groove 20B, the hanging buckle hole 20C and the interference hole 20D with specific shapes mentioned in the S2 material forming stage, accessories with corresponding shapes are arranged, the accessories are fixedly combined through the implanted equipment, and the corresponding relation between the holes with specific shapes and the accessories is as follows:

20A are positioning holes, and the corresponding insertion parts are positioning pins 201A;20B are grooves, and the corresponding insert members are modular assemblies 201B;20C are hanging buckle holes, and the corresponding insertion parts are hanging buckle 201C;20D is a meter-shaped interference hole, and the corresponding insertion part is a nut 201D; the device for executing implantation is a reciprocating mechanical arm, a continuous mechanical arm, a rotary screw sleeve and a hammering punch, the material source is a vibration disc supply, tubular continuous feeding device or other intermittent working material device, and the working procedure of implanting accessories is arranged between or after the automatic feeding bending technical flow and working procedure according to the requirement.

S4, bending and forming:

bending an inner die and an outer die: the frame structure 01 is clamped by the bending outer die 41 and the bending inner die 42 which are attached with materials, and a bent angle is processed after the bending outer die and the bending inner die rotate along the bending direction, so that bent angle forming is formed, and the following steps are subdivided:

a-1: repeatedly bending in a unidirectional single angle;

as shown in fig. 4, the frame structure 01 is clamped by the bending outer die 41 and the bending inner die 42 which are attached to the material, and the bending angle is processed after rotating along the bending direction to form a first bending angle, then the material is conveyed forward by matching with the S3 servo feeding stage, the bending point is pushed forward, and the steps are repeated until four bending angles are completed.

There are two sets of upper left and upper right bending outer dies 41 above the material before each bending. The bending inner mold 42 is a fan-shaped structure capable of rotating around a shaft, two radii of the fan-shaped structure are perpendicular to each other, the upper left bending outer mold 41 is kept motionless, the upper right bending outer mold 41 and the bending inner mold 42 clamp materials, see step1, step3, step5 and step7 in fig. 4, all of which rotate around the shaft center of the bending inner mold 42 to form a first bent angle, a second bent angle, a third bent angle and a fourth bent angle in sequence, see step2, step4, step6 and step8 in fig. 4, wherein step3, step5 and step7 in fig. 4 also comprise a servo feeding device for feeding the materials forwards.

The bending position is controlled by the servo feeding device, so that the outer frame can be continuously bent to form four corners at one time, the size and the dimension of the outer frame are controlled by the feeding distance, the square frame structure 01 manufactured by the non-cutting processing technology is manufactured, and the frame structure at least has two square openings on the front surface and the back surface and is in the form of one break point or a plurality of break points.

A-2: unidirectional polygonal rolling bending is not carried out; in this mode the servo feed device does not need to feed.

As shown in fig. 5, the workpiece is clamped by a bending outer die 41 and a bending inner die 42, which are attached to the material, the bending inner die 42 is a rectangular module, and a first axis 421, a second axis 422, a third axis 423 and a fourth axis 424, which are all rotatable, are provided around. The upper left and upper right sets of bending outer dies 41 are arranged above the material before bending each time, the upper left bending outer die 41 is not moved, the upper right bending outer die 41 and the bending inner die 42 clamp the material, see step2, step4, step6 and step8 in fig. 5, a first bending angle is processed after rotating along the bending direction according to a first axis 421, a second bending angle is processed along the bending direction according to a second axis 422 in fig. 5, a third bending angle is processed along the bending direction according to a third axis 423 in fig. 5, a fourth bending angle is processed along the bending direction according to a fourth axis 424 in fig. 5, the material is not conveyed forward by the servo, the material is only pulled forward by rotating force, the outer frame surrounds the bending inner die 42, and a mouth-shaped frame structure 01 manufactured by a non-cutting processing technology is manufactured, and the structure at least has two mouth openings on two sides and one or more break points in a front-back side and front-back side frame shape.

A-3: unidirectional polygonal rolling bending feeding;

as shown in fig. 6, the unidirectional polygonal rolling bending feeding is similar to the unidirectional polygonal rolling bending non-feeding, and the feeding of the servo feeding device is added, so that the length and width of the frame structure 01 are not limited by the self size of the bending inner die 42, and can be set arbitrarily.

The workpiece is clamped by a bending outer die 41 and a bending inner die 42 which are attached with materials, wherein the bending inner die 42 is a rectangular module, and a first axle center 421, a second axle center 422, a third axle center 423 and a fourth axle center 424 which are all rotatable are arranged on the periphery of the bending inner die. Two sets of upper left and upper right bending outer dies 41 exist above the material before each bending, the upper left bending outer die 41 is kept still, and the upper right bending outer die 41 and the bending inner die 42 clamp the material, see step1, step4, step6 and step9 in fig. 6.

And a first bending angle is processed according to the rotation of the first axis 421 along the bending direction, referring to step2 in fig. 6, a second bending angle is processed according to the rotation of the second axis 422 along the bending direction, referring to step5 in fig. 6, a third bending angle is processed according to the rotation of the third axis 423 along the bending direction, referring to step8 in fig. 6, a fourth bending angle is processed according to the rotation of the fourth axis 424 along the bending direction, referring to step11 in fig. 6, after completing one bending angle, a material is conveyed forward by a certain distance by a servo feeding device before the next bending angle is performed, referring to step4, step7 and step10 in fig. 6, and the bent outer die 41 after each bending needs to be separated from the material after compacting the vertical part of the material, and cannot block the material from moving forward, referring to step3, step6, step9 and step12 in fig. 6.

Finally, the size of the frame structure 01 is larger than that of the bending internal mold 41, and the frame structure 01 which is made into a Chinese character 'kou' shape by a non-cutting processing technology is manufactured, and the frame structure 01 at least has two Chinese character 'kou' shaped openings on the front side and the back side and is in the form of one breakpoint or a plurality of breakpoints.

A-4: two-way double-angle or multi-way multi-angle bending;

as shown in fig. 7, a plurality of bending outer dies 41 with bending angles and a plurality of bending inner dies 42 are provided on the die apparatus, the plurality of bending inner dies 42 are in a straight line shape when not in operation and two adjacent bending inner dies 42 are hinged by a shaft, the plurality of bending inner dies 42 can form a frame structure shape by rotating around the shaft center, and each bending inner die 42 is provided with a bending outer die 41 to be matched with.

The rotation axes of the bending angles are horizontally arranged, a swing arm 425 is arranged between two adjacent rotation axes, the swing arm 425 and the bending inner die 42 are in parallel or assembled relation, the swing arm 425 and the bending inner die 42 are fixed together in a fixed locking mode, or the swing arm 425 and the bending inner die 42 are integrated, materials are clamped by the corresponding bending outer die 41 and the bending inner die 42 before bending, a first bending angle is processed after the first axis 421 rotates along the bending direction, a second bending angle is processed after the second axis 422 rotates along the bending direction, a third bending angle is processed after the third axis 423 rotates along the bending direction, a fourth bending angle is processed after the fourth axis 424 rotates along the bending direction, bending is realized through the rotation of the axes, and the materials are cut off after the bending inner die and the bending outer die are clamped and fixed, so that the frame structure 01 surrounds the bending inner die 41.

Or after any bent angle is formed, a material with a fixed length is sent out by a servo feeding device to control the position of a bending point, the material is cut off after the bending inner die and the bending outer die are clamped and fixed, the size of the outer frame is larger than that of the bending inner die 41, and a square-shaped frame structure 01 manufactured by a non-cutting processing technology is manufactured, wherein the frame structure 01 at least has two square-shaped openings on the front side and the back side and is in the form of one or more break points.

Rolling and bending: the bending outer die 41 mentioned in the above A-1, A-2, A-3 and A-4 is replaced by an outer die and a roller cutter, the bending inner die 42 is replaced by an inner die and a roller cutter, namely, the rolling bending method is adopted, and the bending outer die, the bending inner die, the roller cutter and the roller cutter are sequentially B-1, B-2, B-3 and B-4 and are driven by a piston, a servo motor or a mechanical structure, except that the outer die, the inner die and the corresponding roller cutter are in a fixed integral type or are separated and staggered, the purpose of staggered control is achieved by using the same driving source or different driving sources, and an auxiliary positioning device and a guiding device are arranged on one side of any side of the roller cutter or a frame structure 01 according to processing requirements.

The bending driving device is a machine or a swing arm or a rotating shaft, a motor is matched with a gear, a guide rail and oil pressure equipment to serve as a power source, the shaft is a fixed rotating shaft or a multi-rotating shaft rotating arm equipment, the shaft and the shaft of the equipment are in a rotation and revolution relation, and more than two different materials or the same material are tightly attached under the processing and forming of the process, and arc-shaped corners are formed; after the forming of any one of the bent angles is finished, the bent angles are positioned in a certain distance horizontal to the feeding direction, and equipment for detecting the feeding length and the feeding angle is arranged to ensure that each bent angle and the feeding length are in a certain control range.

In the step S4, the punching holes 421, the punching tools 422 and the material supporting plate 423 are arranged on the bending outer die 41 and the bending inner die 42, the bending inner die and the bending outer die are punching upper dies and punching lower dies, the bending cutting integrated process mentioned in the creation of the invention is used for punching or cutting operation before bending forming or after bending forming, when the punching or cutting operation is closed by clamping the inner die and the outer die, the punching tools are forced by using a driving device such as a mechanical action, a hydraulic piston, a pneumatic cylinder and the like, so that the punching tools are used for punching shapes and holes of the frame structure 01, or the cutting tools on a numerical control mechanical arm are used for processing shapes and holes of the frame structure 01, the hole and corner accuracy of each frame structure 01 are ensured to be in a relatively precise range, and the bottom of the die punching holes is provided with the material discharging groove 424.

In addition, the bending and cutting integrated process is applied to the B and rolling bending method, adopts the method that an inner punching die and an outer punching die are integrated with or separated from a roller cutter and are arranged near or at any side of the roller cutter, and takes an auxiliary positioning device as the inner punching die and the outer punching die, and is opened and closed in a reciprocating mode, opened and combined on a bending inner die or a machine rotating shaft base or a mechanical arm in a rotating shaft mode.

S5, butt riveting stage;

the invention relates to a staggered riveting butt joint technology, which is characterized in that the head and the tail of a frame body are combined into a complete frame body by utilizing S3. The two ends mentioned in the servo feeding stage form a concave trapezoid buckle and a convex trapezoid buckle, a male end and a female end are opposite to each other, or other shapes which can lead the two ends to be finally connected and fixed are adopted, the corresponding butt joint positions are adjusted by using an auxiliary positioning device and a guiding device before the final bending process in the S4 bending forming stage is finished, when the bending angle of the final bending process is about to reach 90 degrees for forming, the concave trapezoid buckle and the convex trapezoid buckle are aligned with the buckle positions, an axial micro-motion device is tightly matched through angle change, so that the two ends are pushed into and inserted into tightly after being aligned, the complete frame body can be ensured to be finished after the final bending process is really finished, and then the structure is riveted firmly by using vertical pressurization and rotating wheel pressurization, appearance burrs and joints are modified, and the complete frame body is shaped and is not loosened and deformed.

In the S5 butt riveting stage, the material gaps are filled and fused through a high-frequency heating coil or an auxiliary automatic welding manipulator, so that the joint strength of the frame is improved and the surface appearance requirement is improved.

S6, demolding and blanking:

after the above stage is completed, the frame body formed by the method of bending the inner mold and the outer mold and the method of rolling and bending the mold is formed in two modes of product demoulding and blanking or turnover mold demoulding and blanking according to the feeding mode of the S3 servo feeding stage:

S6-A is only carried out in a product touch blanking mode;

and (3) forming a formed frame body to be larger than the die as a result of auxiliary feeding in the bending process, clamping or adsorbing the frame 01 by using a mechanical arm before the die is opened, and taking out the frame or completing the process in a natural falling mode after the die is opened, and repeating the steps S1-S6.

S6-B, demolding and blanking modes of the turnover mold;

the turnover mould is formed by not assisting feeding in the bending process, the frame 01 is attached to the bending internal mould 42 as a result of attaching the forming frame body to the mould, the frame 01 is taken down together by adopting a mechanical arm clamping or adsorbing mode, the demoulding and blanking stage of S6 is completed, the clamp without the frame structure 01 is replaced, and the circulation processes S1-S6 are repeated.

The S6-B turnover mould takes down the bending inner mould 42 and the frame structure 01 together in a mechanical arm material taking mode so as to carry out additional S7 cutting or post-processing stage or S8 frame or shell forming stage on the frame structure 01, wherein the S7 cutting or post-processing stage and the S8 frame or shell forming stage are additional processes of appearance modification processing, appearance transfer processing, back cover assembling or other extension, and the frame structure 01 is sucked on the bending inner mould frame 42 from the inner side in a vacuum pumping mode by utilizing a shaping hole of a clamp and accurately put into positioning bosses of other mechanical arms, a conveying belt, a processing center or any mould cavity for encapsulation and metal or other fluid injection forming processes, so that S1-S6 can be subjected to unhindered cyclic operation, time waste and dimensional stability are reduced, and efficiency are improved, one or more swing arms 425 are arranged on the bending inner mould 42 of the turnover mould, the swing arms 425 are rotated inwards to be retracted to cause release from the frame 01, and the swing arms 425 are also provided with air channels and corresponding interfaces, the frame structure 01 is sucked on the bending inner mould frame 42 in a vacuum pumping mode, and after the bending inner mould frame structure is finished, and the bending inner mould is separated from the bending inner mould structure in a mode of 01.

In the S1-S6 stage, according to different requirements of a frame structure 01, only one bent angle, two bent angles, three bent angles or four bent angles are needed, or finally butt joint of two ends of the frame is not needed, the S4 bending and forming stage directly continues with the S6 demoulding and blanking stage, a complete production process is carried out, S1 > S2 > S3 > S4 > S6 is repeated to form continuous automatic circulation, in the S1-S6 stage, S1 and S2 are independently used as material preparation and forming stages according to different process requirements, and after the material is cut into a plurality of sections of strips in advance, the material is fed into a feed inlet in the S3 servo feeding stage to carry out the process flow of S3-S6, so that the continuous automatic circulation is formed.

The epicyclic system is provided with a circulating movement device 888, and the circulating movement device 888 is used for demolding the frame structure 01 and/or the epicyclic mold 892 from the fixed mold 891 and moving to the processing center 992; the turnover mold 892 is any one of a bending outer mold 41 or a bending inner mold 42 of the bending forming device; when the turnover mold 892 is a bending outer mold 41, the fixing mold 891 is a bending inner mold 42; when the turnover mold 892 is a bending inner mold 42, the fixing mold 891 is a bending outer mold 41.

The circulation movement device 888 is provided with a working arm 8881, one end or one surface of the working arm 8881 is connected with one turnover mould 892, the other end or one surface of the working arm 8881 is connected with the other turnover mould 892, and the working arm 8881 rotates to enable different turnover moulds 892 or the combination of the turnover mould 892 and the frame structure 01 to be shifted from a bending area of the bending forming device to a processing area of the processing center; alternatively or in addition, the transfer mold 892 is movable on the working arm 8881 such that the transfer mold 892 or the transfer mold 892 and frame structure 01 combination is free to move between a fixed mold and a set position and between the machining center and a set position.

As shown in fig. 8-10, the first mode of operation of the epicyclic system of the present invention is as follows:

in Step1, the circulation means 888 is located between the bending device and the machining center 992, and the two arms 8881 of the circulation means 888 are arranged in parallel and are rotatable about axes. The material is clamped between a fixed die 891 and a transfer die 892, the fixed die 891 and the transfer die 892 being located at one end of a working arm 8881 and the transfer die 892 being connected to the working arm 8881. One end of the other working arm 8881 is also provided with another turnover mould 892. A machining center 992 is provided beside the other transfer die 892, and the machining center 992 is provided with a frame fixing device 991.

In Step2, the left turn-around die 892 rotates and bends the material into an "L" shape in cooperation with the fixed die 891, and the right set of turn-around dies 892 rotates and expands and connects to the other end of the working arm 8881.

In Step3, the left turn-around die 892 continues to rotate and the material is bent into a "J" shape with the stationary die 891.

In Step4, the "J" shaped material is cut into "U" shape and attached to the left side transfer mold 892, and the left side transfer mold 892 and "U" shaped material are moved away from the fixed mold 891 by the working arm 8881.

In Step5, the two arms 8881 on the cycling apparatus 888 rotate to displace the respective positions. So that the left hand transfer die 892 and "U" shaped material are transferred to the right hand side while the right hand horizontally disposed transfer die 892 is transferred to the left hand side and holds the material together with the fixed die 891. Meanwhile, the machining center 992 rotates the frame fixing device 991 so that the idle frame fixing device 991 is located on the track of the movement of the U-shaped material.

In Step6, the left side transfer mold 892 is moved to a specific position by the telescopic movement of the working arm 8881, so that the left side transfer mold 892 and the second working mode of the transfer system of the invention clamp the material and bend the material into an L shape. While the right working arm 8881 also telescopes to place the "U" shaped material in the frame fixture 991.

In Step7, the left hand transfer mold 892 continues to operate, bending the material into a "J" shape. The right hand arm 8881 retracts to separate the "U" shaped material from the right hand transfer mold 892.

In Step8, the left "J" shaped material is cut into "U" shape and the right set of transfer molds 892 are rotated and spread over the right other working arm 8881. The frame fixture 991 is rotated such that its material free side is opposite the other working arm 8881.

In Step9, the left hand transfer mold 892 and "U" shaped material are moved away from the fixed mold 891 by the working arm 8881. The right set of transfer molds 892 are horizontally disposed on another working arm 8881.

In Step10, the two arms 8881 on the cycling apparatus 888 rotate to displace the respective positions. So that the left hand transfer die 892 and "U" shaped material are transferred to the right hand side while the right hand horizontally disposed transfer die 892 is transferred to the left hand side and holds the material together with the fixed die 891.

In Step11, the right arm 8881 is extended to place the "U" shaped material in the frame fixture 991, the two "U" shaped materials forming the frame structure 01.

As shown in fig. 11-13, the second mode of operation of the epicyclic system of the present invention is as follows:

the second mode of operation of the present invention is substantially the same as the first mode of operation of the present invention, with only the differences in the fixed mold 891. The fixed die 891 itself is not rotated in the first mode of operation of the present invention and is fixed in position in contact with the transfer die 892. The fixed die 891 in the second mode of operation of the epicyclic system of the present invention is pivotable, either horizontally or vertically. Other working modes are the same as the first working mode, and the encumbrance is avoided.

As shown in fig. 14 and 15, the machining center 992 is connected to a frame fixing device 991, and the frame fixing device 991 is used for connecting a frame structure 01 moving along with the turnover mold 892, and is fixed by positioning through an adsorption structure or a concave-convex structure, or is clamped and fixed by an upper mold 991D and a lower mold 991D; the frame body fixing device 991 is provided with a convex groove or a concave groove or a local clearance space 991B which is in accordance with the internal or external shape of the frame structure 01; the frame fixing device base 991A and/or the positioning pin key 991C are/is used for fixing the frame fixing device 991 with the frame structure 01 or the encapsulation mould; the frame fixing device 991 is a fixed structure or a rotatable structure.

As shown in fig. 16 and 17, an angle fixing device 68 is disposed at any corner or any side of the frame structure 01, the angle fixing device 68 is provided with a device a69A and a device B69B, which are combined with each other at two sides, one of the device a and the device B is a hole, the other is a buckle, which is used for bending and forming to keep a fixed angle, the situation that the frame body is askew or too large in tolerance due to the elastic influence of metal after the die is released is avoided, the device a and the device B are in direct contact or indirect contact or lamination relation, and a device C is disposed at any position of the device a and the device B for fixing or positioning, and the device C is a stud, a nut, a pin key or a sleeve.

The invention has been described above by way of example with reference to the accompanying drawings, it is clear that the implementation of the invention is not limited to the above-described manner, but it is within the scope of the invention to apply the inventive concept and technical solution to other situations as long as various improvements made by the inventive concept and technical solution are adopted or without any improvement.

Claims (4)

1. The utility model provides an improve crooked efficiency's of automatic pay-off machine, includes servo feedway, bending device, turnover system, framework fixing system and machining center, its characterized in that:

the servo feeding device is used for driving the material to advance to the bending forming device; or/and before driving the material into the bending forming device, carrying out butt joint technology pre-forming on the two ends of the material; and/or the servo feeding device stably conveys the materials with quantitative fixed values to the bending forming device through a stepping motor, a servo motor, a hydraulic pump driving piston, a chuck or a roller feeding system;

the bending forming device is used for bending materials into a required frame structure (01) through matching of a bending outer die (41) and a bending inner die (42);

the turnover system is used for moving or rotating the frame structure (01) or a combination of the frame structure (01) and the turnover mould in any direction;

The machining center is provided with any axial machining tool equipment, and holes or welding is performed on the side frame structure (01) by utilizing different machining equipment;

the turnover system is provided with a circulating movement device (888), and the circulating movement device (888) is used for demolding the frame structure (01) or/and the turnover mould (892) from the fixed mould (891) and moving the frame structure or/and the turnover mould to the processing center (992); the turnover mould (892) is any one of a bending outer mould (41) or a bending inner mould (42) of the bending forming device; when the turnover mould (892) is a bending external mould (41), the fixed mould (891) is a bending internal mould (42); when the turnover mould (892) is a bending inner mould (42), the fixed mould (891) is a bending outer mould (41);

the circulating movement device (888) is provided with a working arm (8881), one end or one surface of the working arm (8881) is connected with a rotating die (892), the other end or one surface of the working arm (8881) is connected with another rotating die (892), and the working arm (8881) rotates to enable different rotating dies (892) or a combination of the rotating dies (892) and a frame structure (01) to be shifted from a bending area of the bending forming device to a processing area of the processing center; the turnover mould (892) is movable on the working arm (8881) so that the turnover mould (892) or the combination of the turnover mould (892) and the frame structure (01) moves between a fixed mould and a set position and between the machining center and the set position in a rotary or random axial movement mode;

The circulating motion device is positioned between the bending forming device and the machining center, and two working arms of the circulating motion device are arranged in parallel and can rotate around the shaft; the material is clamped between the fixed die and the turnover die, the fixed die and the turnover die are positioned at one end of a working arm, and the turnover die is connected with the working arm; one end of the other working arm is also provided with the other turnover mould; a machining center is arranged beside the other turnover mould, and is provided with a frame fixing device;

the turnover mould on the left side rotates and is matched with the fixed mould to bend the material into an L shape, and the turnover mould set on the right side rotates to be unfolded and is connected to the other end of the working arm;

the turnover mould on the left side continues to rotate and is matched with the fixed mould to bend the material into J shape;

cutting the J-shaped material into a U-shaped material, and attaching the U-shaped material to a left turnover mould, wherein the left turnover mould and the U-shaped material are separated from a fixed mould through the movement of a working arm;

the two working arms on the circulating motion device rotate to replace the respective positions; the left turnover mould and the U-shaped material are transferred to the right, and meanwhile, the turnover mould horizontally arranged on the right is transferred to the left and clamps the material together with the fixed mould; simultaneously, the machining center rotates the frame fixing device (991) so that the idle frame fixing device is positioned on a moving track of the U-shaped material;

At the moment, the left turnover mould moves to a specific position in a telescopic way through the working arm, so that the left turnover mould clamps the material in a second working mode of the turnover system and bends the material into an L shape; the working arm on the right side also stretches to place the U-shaped material on the frame fixing device;

the turnover mould on the left side continues to work, and the material is bent into a J shape; the working arm on the right side is retracted to separate the U-shaped material from the turnover mould on the right side;

the left J-shaped material is cut into U-shaped materials, and the right turnover die set is rotationally unfolded on the other right working arm; the frame body fixing device rotates to enable the surface without material to be opposite to the other working arm;

the left turnover mould and the U-shaped material are separated from the fixed mould through the movement of the working arm, and the right turnover mould set is horizontally arranged on the other working arm;

the two working arms on the circulating motion device rotate to replace the respective positions, so that the left turnover mould and the U-shaped material are transferred to the right, and meanwhile, the turnover mould horizontally arranged on the right is transferred to the left and clamps the material together with the fixed mould,

the working arm on the right side stretches out to place the U-shaped material on the frame body fixing device, and the two U-shaped materials form a frame structure.

2. The machine for increasing the efficiency of automated feed bending according to claim 1, wherein:

the machining center (992) is connected with a frame fixing device (991), the frame fixing device (991) is used for connecting a frame structure (01) moving along with a turnover die (892), and is fixed by positioning through an adsorption structure or a magnetic attraction structure or a concave-convex structure or is clamped and fixed through an upper die (991D); the frame body fixing device (991) is provided with a convex groove or a concave groove or a local clearance space (991B) which is in accordance with the internal or external shape of the frame structure (01); the frame fixing device base (991A) and/or the positioning pin key (991C) are/is used for fixing the frame fixing device (991) and the frame structure (01) or the encapsulation mould; the frame fixing device (991) is of a fixed structure or a rotatable structure.

3. The machine for increasing the efficiency of automated feed bending according to claim 2, wherein:

the machining center (992) is provided with one or more of a fixed cutting tool (2), a numerical control tool machining center (26), a tapping machine tool (27) and an inner and outer punching die (28), and is a reciprocating type or swing arm type or rotary type device, the shape of the inner side, the outer side or any side of the frame structure (01) is machined, or/and any one or more of a positioning hole (20A), a groove (20B), a hanging buckle hole (20C) and a rice-shaped interference hole (20D) are formed, an insertion part corresponding to the positioning hole (20A) is a positioning pin (991C), an insertion part corresponding to the groove (20B) is a modularized assembly (201B), an insertion part corresponding to the hanging buckle hole (20C) is a hanging buckle (201C), and an insertion part corresponding to the rice-shaped interference hole (20D) is a nut (201D).

4. A machine for increasing the efficiency of automated feed bending according to claim 3, wherein: the device also comprises a material preparation device and/or a material forming device;

the material preparation device is used for straightening the material before the material enters the servo feeding device;

the material forming device performs any one or more of material section forming, combination between the same materials, combination between different materials, preprocessing before bending the inner wall and the outer wall of the material and modular part implantation before the material enters the servo feeding device.