CN115464047A

CN115464047A - Automatic quick die change device of center of bending

Info

Publication number: CN115464047A
Application number: CN202210823975.9A
Authority: CN
Inventors: 邹飞龙; 李振光; 王军
Original assignee: Ruitie Machine Tool Suzhou Co ltd; Db Machine Tool Shanghai Co ltd
Current assignee: Ruitie Machine Tool Suzhou Co ltd; Db Machine Tool Shanghai Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-12-13

Abstract

The invention discloses an automatic and rapid die changing device for a bending center, which is characterized in that: comprises an upper die clamping device, a bottom plate and an automatic die changing device; the upper die clamping device comprises a clamping tool rest and a clamping assembly arranged on the front end face of the lower part of the clamping tool rest; the bottom plate is arranged on the front end surface of the upper part of the upper die clamping device; the automatic die changing device is connected with the front end face of the bottom plate in a sliding mode. The invention is arranged in a front-end bending area of a bending center, when a die needs to be disassembled and assembled, a driving base is moved to the front of the die to be disassembled and assembled through a driving motor, and a mechanical arm is started to move to the front of the die to be disassembled and assembled; the manipulator arm cylinder is controlled to disassemble and assemble the mould, so that the mould can be horizontally installed or moved out, and the inapplicable mould is moved to the two ends of the clamping device, so that the mould is convenient to store, convenient to take and manage; after being disassembled and assembled, the tool changer can be quickly reset, the tool changing speed is high, time and labor are saved, and the processing efficiency of the equipment is improved.

Description

Automatic quick die change device of center of bending

Technical Field

The invention relates to a bending center, in particular to an automatic rapid die changing device which is arranged in a bending area at the front end of the bending center.

Background

The bending center is a device for bending the metal sheet, plays an important role in the sheet metal processing industry, improves the processing efficiency of the bending center in actual production, contributes to improving the production quantity and quality, reduces the production cost and improves the enterprise competitiveness.

How to accomplish dismouting mould (tool changing) fast is the key that improves the central machining efficiency of bending, and current equipment uses artifical tool changing as the owner, and the tool changing process is loaded down with trivial details, especially when processing some multi-varieties, small batch's product, often needs frequent change mould (last sword) to equipment machining's efficiency has been reduced.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an automatic and rapid die changing device for a bending center.

The technical scheme of the invention is as follows:

the utility model provides an automatic quick die change device in center of bending which characterized in that: comprises an upper die clamping device, a bottom plate and an automatic die changing device; the upper die clamping device comprises a clamping tool rest and a clamping assembly arranged on the front end face of the lower part of the clamping tool rest; the bottom plate is arranged on the front end surface of the upper part of the upper die clamping device; the automatic die changing device is connected with the front end face of the bottom plate in a sliding mode.

Preferably, the automatic die changing device comprises a driving bottom plate, a driving motor, a cylinder, a connecting plate and a mechanical arm;

the driving motor is arranged on the driving bottom plate; the cylinder is positioned below the driving motor; the bottom of the driving bottom plate is provided with a guide rail, and the connecting plate is connected with the guide rail in a sliding manner through a sliding block; a piston rod of the cylinder is connected with the connecting plate to drive the connecting plate to move on the guide rail; the mechanical arm is arranged at the bottom of the connecting plate.

Preferably, the mechanical arm comprises an arm mounting plate, a positioning pin, an arm cylinder and a clamping jaw linked with the arm cylinder;

the arm mounting plate is fixed at the bottom of the connecting plate; the jack catch is pivoted with one end of the arm mounting plate, and the tail end of the arm cylinder is pivoted with the other end of the arm mounting plate; the locating pin is located an terminal surface of arm mounting panel is located the top of jack catch.

Preferably, the mechanical arm comprises an arm mounting plate, a positioning pin and an expansion pin; the arm mounting panel is fixed the bottom of connecting plate, the locating pin install in an end surface of arm mounting panel, the round pin that expands is located the below of locating pin.

Preferably, a pair of guide rails is arranged on the front end surface of the bottom plate, a gear rack is arranged between the pair of guide rails, and a gear meshed with the gear rack is arranged on a transmission shaft of the driving motor.

Preferably, the automatic die changing device comprises a horizontal moving sliding table, a lifting cylinder, a horizontal cylinder, a connecting plate and a mechanical arm;

a vertical guide rail is arranged on one side surface of the horizontal moving sliding table, and the lifting sliding table is connected with the vertical guide rail through a sliding block; the lifting cylinder is arranged in the lifting sliding table, and a piston rod of the lifting cylinder is connected with the top of the horizontal moving sliding table;

the horizontal cylinder is arranged on the lifting sliding table; the bottom of the lifting sliding table is provided with a guide rail, the connecting plate is connected with the guide rail in a sliding manner through a sliding block, and a piston rod of the horizontal cylinder is connected with the connecting plate so as to drive the connecting plate to move on the guide rail; the mechanical arm is arranged at the bottom of the connecting plate.

Preferably, a pair of guide rails is arranged on the front end face of the bottom plate, and a sliding block connected with the guide rails in a sliding manner is arranged on the other side face of the horizontal moving sliding table;

and a ball screw is arranged between the guide rails, the horizontal moving sliding table is connected with the ball screw and drives the horizontal moving sliding table to reciprocate on the guide rails through the ball screw.

Preferably, the clamping assembly comprises a swing arm support, an upper die platen and a clamping element;

the swing arm support is fixedly arranged on the front end surface of the clamping tool rest by taking at least two swing arm supports as a group; the upper die pressing plate is pivoted between the two swing arm supports through a pin shaft;

a torsion spring is sleeved at two ends of the pin shaft, one end of the free end of the torsion spring is connected with the swing arm support, and the other end of the torsion spring is connected with the upper die pressing plate;

and a mounting groove is formed in the front end face of the clamping tool rest and is opposite to the upper die pressing plate, one end of the clamping element is arranged in the mounting groove, and the other end of the clamping element is connected with the upper end part of the upper die pressing plate.

Preferably, a sensor for identifying the specification and the position of the mold is arranged on the automatic mold changing device.

The invention is arranged in a front-end bending area of a bending center, when a die needs to be disassembled and assembled, a driving base is moved to the front of the die to be disassembled and assembled through a driving motor, and a mechanical arm is started to move to the front of the die to be disassembled and assembled; the manipulator arm cylinder is controlled to disassemble and assemble the mould, so that the mould can be horizontally installed or moved out, and the inapplicable mould is moved to the two ends of the clamping device, so that the mould is convenient to store, convenient to take and manage; after being disassembled and assembled, the tool-changing device can be quickly reset, the tool-changing speed is high, time and labor are saved, and the processing efficiency of the device is improved.

Drawings

FIG. 1 is a perspective view of the present invention

FIG. 2 is a perspective view of the upper mold clamping device of the present invention with the mold installed

FIG. 3 is a schematic view of a part of the structure of the upper mold clamping device for mounting the mold according to the present invention

FIG. 4 is a partially disassembled view of the upper mold clamping device of the present invention

FIG. 5 is a side view of an automatic mold changing apparatus in example 1 of the present invention

FIG. 6 is a perspective view of an automatic mold changing apparatus in example 1 of the present invention

FIG. 7 is a front view of the automatic mold changing apparatus in embodiment 1 of the present invention

FIG. 8 is a rear view of the automatic mold changing device in embodiment 1 of the present invention

FIG. 9 is a schematic view of the connection between the automatic die changing device and the bending center base plate in embodiment 1 of the present invention

FIG. 10 is a schematic view of the structure of the automatic mold changing device of the present invention in embodiment 1

FIG. 11 is a side view of the automatic mold changing device in embodiment 2 of the present invention

FIG. 12 is a perspective view of an automatic mold changing apparatus in example 2 of the present invention

FIG. 13 is a front view of an automatic mold changing apparatus in embodiment 2 of the present invention

FIG. 14 is a rear view of an automatic mold changing device in embodiment 2 of the present invention

FIG. 15 is a schematic view of the connection between the automatic mold changing device and the bending center base plate in embodiment 2 of the present invention

FIG. 16 is a schematic view of the structure of the mold assembly and disassembly of the automatic mold changing apparatus in embodiment 2 of the present invention

FIG. 17 is a side view of an automatic mold changing apparatus in example 3 of the present invention

FIG. 18 is a perspective view of an automatic mold changing apparatus in example 3 of the present invention

FIG. 19 is a front view of the automatic mold changing apparatus in embodiment 3 of the present invention

FIG. 20 is a rear view of an automatic mold exchanging apparatus according to embodiment 3 of the present invention

FIG. 21 is a schematic view of the connection between the automatic mold changing device and the bending center base plate in embodiment 3 of the present invention

FIG. 22 is a schematic view showing the structure of a mold for assembling and disassembling the automatic mold changing device in embodiment 3 of the present invention

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "the plural" typically includes at least two, but does not exclude the presence of at least one.

It should be understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The words "if", as used herein, may be interpreted as "at \8230; \8230when" or "when 8230; \823030, when" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (a stated condition or event)" may be interpreted as "upon determining" or "in response to determining" or "upon detecting (a stated condition or event)" or "in response to detecting (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrases "comprising one of \8230;" does not exclude the presence of additional like elements in an article or system comprising the element.

The invention has three different embodiments, which are as follows:

example 1

As shown in fig. 1 to 4, an automatic rapid die change device for a bending center according to the present invention is characterized in that: comprises an upper die clamping device 100, a base plate 200 and an automatic die changing device 300.

As shown in fig. 2 to 3, the upper die clamping device 100 includes a clamping holder 101 and a clamping assembly provided on a lower front end surface of the clamping holder 101; the base plate 200 is mounted on the front end surface of the upper part of the clamping tool holder 101; the automatic mold changing device 300 is slidably connected to the front end surface of the base plate 200.

The clamping assembly comprises a swing arm support 102, an upper pressing plate 103 and a clamping element 104, wherein the clamping element 104 in the embodiment is a hydraulic cylinder, and the hydraulic cylinder can be replaced by an air cylinder as required to control the tightness of the upper pressing plate 1033.

The top of the clamping tool rest 101 is provided with a plurality of mounting holes 1010 connected with a bending center; the front end surface of the clamping tool holder 101 is provided with a notch, the notch is transversely arranged along the length direction of the front end surface of the clamping tool holder 101, the strip-shaped notch is located below the front end surface, two swing arm supports 102 in this embodiment are used as a group and are fixed in the notch side by side, the number of the swing arm supports 102 is determined according to the number of the dies to be clamped, as shown in fig. 3, the structural schematic diagram of the swing arm supports 102 in this embodiment is shown.

In this embodiment, the upper portion of the swing arm support 102 is provided with a support fixing hole 1021 connected with the clamping tool rest 101, a boss 1022 pivotally connected with the upper mold platen 103 is arranged below the support fixing hole 1021, and the boss 1022 starts to be provided with a pivot hole; a bayonet 1024 for engaging with the free end of the torsion spring 1023 is arranged on one side of the boss 1022.

The upper pressing plate 103 is pivoted with the swing arm support 102 through a pin 1031 passing through a pivoting hole of the boss 1022, so that the upper pressing plate 102 can perform a certain angle of clamping movement around the boss 1022. The both ends cover of round pin axle 1031 is equipped with torsional spring 1023, the one end card of the free end of torsional spring 1023 is gone into to the bayonet 1024 of swing arm support 102 in, this torsional spring 1023 the other end with last moulding board 103 meets, this kind of structure can make last moulding board 102 be in and loosen the state, when avoiding changing mould 7, bumps.

A mounting groove is formed in the front end face of the clamping tool rest 101 at a position opposite to the upper mold platen 103, one end of the hydraulic cylinder 104 is arranged in the mounting groove, the other end of the hydraulic cylinder is connected with the upper end portion of the upper mold platen 103, and the clamping action on the upper mold platen 103 can be realized by controlling the action of the hydraulic cylinder 104, so that the clamping and loosening actions on the bending mold can be realized, and the upper mold and the replacement action on the mold can be realized.

The lower end surface of the clamping tool holder 101 in this embodiment is matched with the outer contour of the upper end of the mold, so that the mold can be directly clamped below the clamping tool holder 101.

When the die is fed, the whole action is realized by controlling the tightness action of the upper die pressing plate through the hydraulic cylinder, the response speed is high, the performance is stable, the die bending device is suitable for the process of pressing the die by the bending center, the problem that the manual die pressing is time-consuming and labor-consuming is solved, time and labor are saved, and the working efficiency is improved; meanwhile, idle upper tool molds can be stored at two ends of the clamping tool rest, so that the management of the molds is facilitated.

As shown in fig. 5 to 10, the automatic mold changing apparatus 300 of the present embodiment includes a driving base 1, a driving motor 2, a cylinder 3, a connecting plate 4, and a robot arm 5.

As shown in fig. 9, in the present embodiment, the driving motor 2 is mounted on the upper portion of the driving base 1 for driving the device to reciprocate on the bending center base 200, and a slider 11 slidably contacting with a guide rail 201 of the bending center base 200 is provided on the other side surface of the driving base 1.

The driving motor 2 is provided with a speed reducer 21, a transmission shaft of the speed reducer 21 is provided with a gear 22 meshed with the bottom plate rack 202, and the driving base 1 is provided with a sensor 12 for identifying the specification and the position of the mold 7.

The cylinder 3 in the present embodiment is located below the drive motor 2; a guide rail 6 is arranged at the bottom of the driving base 1, and the connecting plate 4 is connected with the guide rail 6 in a sliding manner through a sliding block 70; the piston rod of the cylinder 3 is connected with the connecting plate 4, and the connecting plate 4 can be driven to reciprocate on the guide rail 6 through the cylinder 3, so that the position of the mechanical arm 5 in front of the die is adjusted.

Because robotic arm 5 locates the bottom of connecting plate 4, the removal of connecting plate 4 drives robotic arm 5's removal in step, and then realizes robotic arm 5 dismantlement and installation to the mould to reach accurate, quick, change, the purpose of installation mould.

To further describe the present invention, the specific structure of the robot arm 5 of the present embodiment is as follows:

as shown in fig. 5, the robot arm 5 includes an arm mounting plate 51, a positioning pin 52, an arm cylinder 53, and a rotary swing arm 54 linked with the arm cylinder 53. The locating pin 52 in this embodiment, rotatory swing arm 54 all cooperate with the mould that corresponds, through the locating pin 52 and the rotatory swing arm 54 of the mould cooperation different structures of different models to realize the effect of quick replacement and installation.

Specifically, the arm mounting plate 51 is fixed at the bottom of the connecting plate 4 and combined with the connecting plate 4 into an integral structure, so that the connecting plate 4 is driven by the cylinder 3, and the mechanical arm 5 can synchronously move to the front of the mold, thereby facilitating subsequent actions.

The rotating swing arm 54 in this embodiment is pivoted to one end of the arm mounting plate 51 (in this embodiment, pivoted to the left end of the arm mounting plate 51), so as to rotate at a certain angle. The tail end of the arm cylinder 53 is pivotally connected to the other end of the arm mounting plate 51 (in this embodiment, pivotally connected to the right end of the arm mounting plate 51); through the drive of arm cylinder 53, can drive rotatory swing arm 54 and carry out the rotational positioning of certain angle, stretch into locating pin 52 and rotatory swing arm 54 and wait to dismantle or install the mould in rather than anastomotic position promptly, realize quick replacement and the installation to the mould.

The positioning pin 52 in this embodiment is provided on the left end surface of the arm mounting plate 51, is located above the rotary swing arm 54, and is inserted into a pin hole of a mold to perform positioning.

While the above embodiments are the single cylinder 3, the single connecting plate 4, and the single robot arm 5, that is, the present invention is applicable to a single mold or a mold with a small size to be replaced and installed, the present invention can also be adapted to molds of different models by providing a plurality of cylinders 3, a plurality of connecting plates 4, and a plurality of robot arms 5, and the following description will be made in terms of the structure of two cylinders 3, two connecting plates 4, and two robot arms 5 in this embodiment, and if the mold is large, the above components can be added.

As shown in fig. 6 to 7, the cylinder 3 of the present embodiment includes a first cylinder 31 and a second cylinder 32, the connecting plate 4 includes a first connecting plate 41 and a second connecting plate 42, and the rail 6 includes a first rail 61 and a second rail 62; the first cylinder 31 and the second cylinder 32 are arranged on the upper surface of the horizontal support plate of the driving base 1 in parallel (11 is omitted), and are positioned below the driving motor 2; the first connecting plate 41 and the second connecting plate 42 are respectively connected with the first guide rail 61 and the second guide rail 62 in a sliding manner; the piston rods of the first cylinder 31 and the second cylinder 32 are respectively connected to the first connecting plate 41 and the second connecting plate 42.

As shown in fig. 8, the robot 5 of the present embodiment includes a first robot 501 and a second robot 502, and the first robot 501 and the second robot 502 are respectively installed at the bottom of the first connecting plate 41 and the second connecting plate 42.

As shown in fig. 9 and 10, when the mold 7 is disassembled, the driving motor 2 is started to slide the present invention to the front of the mold 7 to be disassembled, and the first cylinder 31 and the second cylinder 32 are started to drive the first connecting plate 41 and the second connecting plate 42 to move the first robot arm 501 and the second robot arm 502 to the front of the mold to be disassembled; the positioning pin is inserted into 52 the positioning pin 71 of the die to be disassembled, the arm cylinder 53 is controlled to extend the rotary swing arm 54 into the disassembling groove of the disassembling die, then the upper die pressing plate at the bending center is lifted, and the die can be horizontally installed or moved out.

The invention can also use one mechanical arm independently, and can also use two mechanical arms simultaneously; when a short die (a single die or a single-hole die) needs to be taken and placed, the driving base 1 moves to a designated position, after the first air cylinder 31 retracts, the positioning pin 52 is inserted into the corresponding pin hole 71 of the die, the arm air cylinder 53 retracts, the first rotating swing arm 54 presses the pin shaft 72 of the die downwards, the first air cylinder 31 extends out, and the die is taken out; the base 1 is driven to move to another position, the first air cylinder 31 retracts, the arm air cylinder 53 extends, the end of the pin shaft 72 is pushed into a corresponding clamping groove of the clamping tool rest 101 under the action of the spring, the first air cylinder 31 extends, and the mold is put down to be put in storage or installed.

For a wide mold (the mold has at least two pin holes), the mold can be taken and placed by the simultaneous actions of the first cylinder 31 and the second cylinder 32.

When the die needs to be disassembled and assembled, the driving base is moved to the front of the die to be disassembled and assembled through the driving motor, and the air cylinder is started to move the mechanical arm to the front of the die to be disassembled and assembled; inserting a positioning pin into a pin hole of a mold to be disassembled and assembled, controlling an arm cylinder to stretch a rotary swing arm into a disassembling and assembling groove of the mold to be disassembled and assembled, then lifting an upper mold pressing plate at the bending center, and horizontally installing or moving out the mold at the moment; after being disassembled and assembled, the tool changer can be quickly reset, the tool changing speed is high, time and labor are saved, and the processing efficiency of the equipment is improved.

Example 2

As shown in fig. 1 to 4, an automatic rapid die changing device for a bending center according to the present invention is characterized in that: comprises an upper mold clamping device 100, a base plate 200, and an automatic mold changing device 300.

The upper die clamping device 100 comprises a clamping tool holder 101 and a clamping assembly arranged on the front end face of the lower part of the clamping tool holder 101; the base plate 200 is mounted on the front end surface of the upper part of the clamping tool holder 101; the automatic mold changing device 300 is connected with the front end surface of the bottom plate 200 in a sliding manner.

The top of the clamping tool rest 101 is provided with a plurality of mounting holes 1010 connected with a bending center; the front end surface of the clamping tool holder 101 is provided with a notch, the notch is transversely arranged along the length direction of the front end surface of the clamping tool holder 101, the strip-shaped notch is located below the front end surface, two swing arm supports 102 in this embodiment are taken as a group and are fixed in the notch side by side, the number of the swing arm supports 102 is determined according to the number of the dies to be clamped, as shown in fig. 3, the structural schematic diagram of the swing arm supports 102 in this embodiment is shown.

A mounting groove is formed in the front end face of the clamping tool rest 101 at a position opposite to the upper die pressing plate 103, one end of the hydraulic cylinder 104 is arranged in the mounting groove, the other end of the hydraulic cylinder is connected with the upper end portion of the upper die pressing plate 103, and the clamping action of the upper die pressing plate 103 can be realized by controlling the action of the hydraulic cylinder 104, so that the clamping and releasing actions of the bending die are realized, and the upper die and the replacement action of the die are realized.

As shown in fig. 11 to 16, the automatic mold changing apparatus 300 in the present embodiment includes a driving base 1, a driving motor 2, a cylinder 3, a connecting plate 4, and a robot arm 5.

As shown in fig. 15, in the present embodiment, the driving motor 2 is mounted on the upper portion of the driving base 1 to drive the present apparatus to reciprocate on the bending center base plate 200, and a slider 11 slidably contacting with a guide rail 201 of the bending center base plate 200 is provided on the other side surface of the driving base 1.

A gear 22 meshed with the bottom plate rack 202 is arranged on a transmission shaft of the driving motor 2, and a sensor 12 for identifying the specification and the position of the mold is arranged on the driving base 1.

The cylinder 3 in the present embodiment is located below the drive motor 2; a guide rail 6 is arranged at the bottom of the driving base 1, and the connecting plate 4 is connected with the guide rail 6 in a sliding manner through a sliding block 7; the piston rod of the cylinder 3 is connected with the connecting plate 4, and the connecting plate 4 can be driven to reciprocate on the guide rail 6 through the cylinder 3, so that the position of the mechanical arm 5 in front of the die is adjusted.

Because robotic arm 5 locates the bottom of connecting plate 4, the removal of connecting plate 4 drives robotic arm 5's removal in step, and then realizes robotic arm 5 to the dismantlement and the installation of mould to reach accurate, quick, change, the purpose of installation mould.

the mechanical arm 5 comprises an arm mounting plate 51, a positioning pin 52 and an expansion pin 53; arm mounting panel 51 is fixed the bottom of connecting plate 4, locating pin 52 install in arm mounting panel 51's left end face, the round pin 53 that expands is located the below of locating pin 52, both are located same vertical line, and locating pin 52, the round pin 53 that expands in this embodiment all cooperate with locating hole and pinhole on the mould that corresponds, through the locating pin 52 and the round pin 53 of the different structures of mould cooperation of different models to realize the effect of quick replacement and the different moulds of installation.

Specifically, the arm mounting plate 51 is fixed at the bottom of the connecting plate 4 and combined with the connecting plate 4 into an integral structure, so that the cylinder 3 drives the connecting plate 4, and the mechanical arm 5 can synchronously move to the front of the mold, thereby facilitating subsequent actions.

While the above embodiments are directed to the single cylinder 3, the single connecting plate 4, and the single robot arm 5, that is, the present invention is applicable to a structure for replacing and installing a single mold or a mold with a small size, the present invention may be applied to a plurality of cylinders 3, a plurality of connecting plates 4, and a plurality of robot arms 5 to adapt to molds of different models, as described below in the following, the structure of two cylinders 3, two connecting plates 4, and two robot arms 5 in the present embodiment will be further described, and if the mold is large, the above components may be added.

As shown in fig. 12 to 14, the cylinder 3 of the present embodiment includes a first cylinder 31 and a second cylinder 32, the connecting plate 4 includes a first connecting plate 41 and a second connecting plate 42, and the guide rail 6 includes a first guide rail 61 and a second guide rail 62; the first air cylinder 31 and the second air cylinder 32 are arranged on the upper surface of the horizontal support plate 11 of the driving base 1 in parallel and are positioned below the driving motor 2; the first connecting plate 41 and the second connecting plate 42 are respectively connected with the first guide rail 61 and the second guide rail 62 in a sliding manner; the piston rods of the first cylinder 31 and the second cylinder 32 are respectively connected to the first connecting plate 41 and the second connecting plate 42.

The robot arm 5 of this embodiment includes a first robot arm 501 and a second robot arm 502, the first robot arm 501 and the second robot arm 502 are respectively installed at the bottoms of the first connecting plate 41 and the second connecting plate 42, and the positioning pin 52 and the expansion pin 53 are fixed below both the first connecting plate 41 and the second connecting plate 42.

As shown in fig. 15 and 16, an air cylinder piston rod 71 and a piston rod torsion spring 72 are mounted at the right end of the mold 7, and the piston rod torsion spring 72 ejects the air cylinder piston rod 71 into a corresponding groove of the clamping tool rest 101, so as to ensure the fixation of the mold 7.

When the mold needs to be taken out, the positioning pin 52 and the expansion pin 53 are pushed into the corresponding positioning and pin hole on the mold, the steel ball at the lower end part of the expansion pin 53 protrudes outwards under the action of compressed air, so that the mold is fixed, meanwhile, the compressed air enters the mold through the air hole in the middle of the expansion pin 53, the cylinder piston rod 71 is pushed downwards, the first cylinder 31 and the second cylinder 32 extend out to drive the first mechanical arm 501 and the second mechanical arm 502, so that the mold is taken out, and the mold is installed in the same way.

When the die needs to be disassembled and assembled, the driving base is moved to the front of the die to be disassembled and assembled through the driving motor, and the air cylinder is started to move the mechanical arm to the front of the die to be disassembled and assembled; inserting a positioning pin and an expansion pin into a pin hole of a die to be disassembled and assembled, controlling a mechanical arm, then lifting an upper die pressing plate at a bending center, and horizontally installing or moving out the die at the moment; after being disassembled and assembled, the tool changer can be quickly reset, the tool changing speed is high, time and labor are saved, and the processing efficiency of the equipment is improved.

Example 3

The upper die clamping device 100 includes a clamping tool holder 101 and a clamping unit provided on a lower front end surface of the clamping tool holder 101; the base plate 200 is mounted on the front end surface of the upper part of the clamping tool holder 101; the automatic mold changing device 300 is slidably connected to the front end surface of the base plate 200.

The clamping assembly comprises a swing arm support 102, an upper mold pressing plate 103 and a clamping element 104, wherein the clamping element 104 in the embodiment is a hydraulic cylinder, and the hydraulic cylinder can be replaced by an air cylinder as required to control the tightness of the upper mold pressing plate 1033.

The top of the clamping tool rest 101 is provided with a plurality of mounting holes 1010 connected with a bending center; the front end surface of the clamping tool rest 101 is provided with a notch, the notch is transversely arranged along the length direction of the front end surface of the clamping tool rest 101, the strip-shaped notch is located below the front end surface, two swing arm supports 102 in the embodiment are taken as a group and are fixed in the notch side by side, the number of the swing arm supports 102 is determined according to the number of the dies to be clamped, and fig. 3 is a schematic structural diagram of a plurality of swing arm supports 102 in the embodiment.

The upper pressing plate 103 is pivoted with the swing arm support 102 through a pin 1031 passing through a pivoting hole of the boss 1022, so that the upper pressing plate 102 can perform a certain angle of clamping movement around the boss 1022. The both ends cover of round pin axle 1031 is equipped with torsional spring 1023, the one end card of the free end of torsional spring 1023 is gone into to the bayonet 1024 of swing arm support 102 in, this torsional spring 1023 the other end with go up the clamp plate 103 and meet, this kind of structure can make and go up the clamp plate 102 and be in the unclamping state, when avoiding changing mould 7, bumps.

When the die is fed, the hydraulic cylinder controls the tightness of the upper die pressing plate to realize the whole action, the response speed is high, the performance is stable, the die bending machine is suitable for the process of pressing the die by the bending center, the problem that the manual die pressing is time-consuming and labor-consuming is solved, the time and the labor are saved, and the working efficiency is improved; meanwhile, idle upper tool molds can be stored at two ends of the clamping tool rest, so that the management of the molds is facilitated.

As shown in fig. 17 to 22, the apparatus 300 for automatically changing a mold includes a horizontal moving slide 1, a lifting slide 2, a lifting cylinder 3, a horizontal cylinder 4, a connecting plate 5, and a robot arm 6.

In this embodiment, a vertical guide rail 11 is arranged on one side surface of the horizontal moving sliding table 1, the lifting sliding table 2 is connected with the vertical guide rail 11 in a sliding manner through a sliding block 20, and the lifting sliding table 2 can slide up and down on the horizontal moving sliding table 1 through the driving of the guide rail 11, the sliding block 20 and the lifting cylinder 3; and a sensor 13 for identifying the specification and the position of the mold 7 is arranged at the bottom of the horizontal moving sliding table 1.

The lifting cylinder 3 is arranged in the lifting sliding table 2, a piston rod of the lifting cylinder 3 is connected with a platform extending out of the top of the horizontal moving sliding table 1, and the lifting cylinder 3 is started to realize the up-and-down sliding of the lifting sliding table 2.

The horizontal cylinder 4 is arranged on one side of the lower part of the lifting sliding table 2; the bottom of lift slip table 2 is equipped with guide rail 21, connecting plate 5 through slider 22 with guide rail 21 slides and meets, horizontal cylinder 4 with the connecting plate meets, and this horizontal cylinder's piston rod with lift slip table 2 meets, drives it through the flexible of horizontal cylinder piston rod and moves on guide rail 21.

The mechanical arm 6 is arranged at the bottom of the connecting plate 5, and the mechanical arm 6 and the connecting plate 5 synchronously reciprocate under the drive of the horizontal cylinder 4.

As shown in fig. 17, the robot arm 6 in the present embodiment includes an arm mounting plate 61, a positioning pin 62, an arm cylinder 63, and a rotary swing arm 64 linked with the arm cylinder 63; the arm mounting plate 61 is fixed at the bottom of the connecting plate 5 and can synchronously move.

The rotary swing arm 64 is pivoted with one end of the arm mounting plate 61, and the tail end of the arm cylinder 63 is pivoted with the other end of the arm mounting plate 61; locating pin 62 is located an end face of arm mounting panel 61 is located rotatory swing arm 64's top, but the corresponding action of the rotatory swing arm 64 of synchro control of stretching out or retracting of arm cylinder 63.

As shown in fig. 21, a pair of guide rails 201 are provided on the front end surface of the bending center base plate 200, and a slider 14 slidably connected to the guide rails 201 is provided on the other side surface of the horizontal moving slide table 1.

Preferably, a ball screw 202 is arranged between the guide rails 201, and the ball screw 202 is driven by a driving motor 203 on one side; the horizontal moving sliding table 1 is connected with the ball screw 202, and the ball screw 202 drives the horizontal moving sliding table 1 to reciprocate on the guide rail 201.

The horizontal cylinder 4 can drive the connecting plate 5 to reciprocate on the guide rail 22, so as to adjust the position of the mechanical arm 6 at the front of the mould 7.

Because robotic arm 6 locates the bottom of connecting plate 5, the removal of connecting plate 5 drives robotic arm 5's removal in step, and then realizes robotic arm 6 to the dismantlement and the installation of mould 7 to reach accurate, quick, change, installation mould 7's purpose.

Locating pin 62, rotatory swing arm 64 in this embodiment all cooperate with the mould 7 that corresponds, through the locating pin 62 and the rotatory swing arm 64 of the mould cooperation isostructure of different models to realize the effect of quick replacement and installation.

Specifically, the arm mounting plate 61 is fixed at the bottom of the connecting plate 5 and combined with the connecting plate 5 into an integral structure, so that the horizontal cylinder 4 drives the connecting plate 5, and the mechanical arm 6 can synchronously move to the front of the mold 7 to facilitate subsequent dismounting.

The rotating swing arm 64 in this embodiment is pivoted to one end of the arm mounting plate 61 (in this embodiment, pivoted to the left end of the arm mounting plate 61) to realize a rotation at a certain angle. The tail end of the arm cylinder 63 is pivotally connected to the other end of the arm mounting plate 61 (in this embodiment, pivotally connected to the right end of the arm mounting plate 61); through the drive of arm cylinder 63, can drive rotatory swing arm 64 and carry out the rotational positioning of certain angle, be about to locating pin 62 and rotatory swing arm 64 stretch into to wait to dismantle or install in the mould rather than anastomotic position, realize the quick assembly disassembly to mould 7.

The positioning pin 62 in this embodiment is provided on the left end surface of the arm mounting plate 61, is located above the rotary swing arm 64, and is inserted into a pin hole of a mold to be positioned.

While the above embodiment is an embodiment of a single horizontal cylinder 4 and a single robot arm 6, that is, the present invention is applicable to a single mold or a mold with a small size to be disassembled and assembled, the present invention can also be adapted to molds of different models by providing a plurality of horizontal cylinders 4, a plurality of connecting plates 5, and a plurality of robot arms 6, as described below in the following description of the structure of two horizontal cylinders 4 and two robot arms 6 in the present embodiment, and the above components can be added if the mold is large.

The connecting plate 5 of the embodiment is an integral structure, and can be set up as two independent connecting plates according to requirements; horizontal cylinder 4 includes first cylinder 41 and second cylinder 42, first cylinder 41 and second cylinder 42 symmetry are located the both sides of connecting plate 5, the piston rod of first cylinder 41, second cylinder 42 meets with the both ends of lift slip table 2 respectively.

As shown in fig. 18 to 20, the robot arm 6 of the present embodiment includes a first robot arm 601 and a second robot arm 602, and the first robot arm 601 and the second robot arm 602 are respectively and symmetrically installed at the bottom of the connecting plate 5.

When the mold is disassembled, the ball screw 202 is started to slide the invention to the front of the mold to be disassembled, the position of the lifting sliding table 2 is adjusted through the lifting cylinder 3, the first cylinder 41 and the second cylinder 42 are started to drive the connecting plate 5 to move the first mechanical arm 601 and the second mechanical arm 602 to the front of the mold to be disassembled; the positioning pin is inserted into the positioning pin of the die to be disassembled and assembled, the arm cylinder 63 is controlled to rotate the swing arm 64 to stretch into the disassembling groove of the disassembling and assembling die 7, then the upper pressing plate at the bending center is lifted, and the die can be horizontally installed or moved out at the moment.

The invention can also use one mechanical arm independently, and can also use two mechanical arms simultaneously; when it is necessary to take and place a shorter mold (single mold or single hole mold), the first robot 61 or the second robot 62 may be used alone; for a mold with a wider width (the mold has at least two pin holes), the first robot 61 or the second robot 62 can be used simultaneously, and the mold can be taken and placed by the actions simultaneously.

Fig. 22 shows an exemplary embodiment of the present invention for disassembling and assembling a mold:

in this embodiment, a horizontally movable hook 71 is fixed in the mold 7, and a back side of the hook 73 is fixed in the mold 7 by a screw to which a compression spring 72 is fixed. When the mold 7 is stored in the clamping tool rest 101, the hydraulic cylinder 104 retracts, the hook 71 in the mold 7 is pushed out under the action of the compression spring 72 to hook the groove of the clamping tool rest 101, so that the mold 7 is fixed, when the mold 7 needs to be taken, the piston rod of the first cylinder 41 retracts, the positioning pin 62 pushes the hook 71 into the mold 7, the rotary swing arm 64 fixes the mold through the arm cylinder 63, the lifting cylinder 3 extends out, the mold is taken out of the tool magazine, the piston rod of the first cylinder 41 extends out, the mold is completely moved out, and the mold can be placed at the designated position of the tool magazine in the same way.

When the die needs to be disassembled and assembled, the motor drives the ball screw to move the horizontal moving sliding table to the position in front of the die to be disassembled and assembled, the lifting cylinder is started to adjust the height of the lifting sliding table to enable the mechanical arm to align to the die to be disassembled and assembled, then the horizontal cylinder and the arm cylinder are matched to realize the disassembling and assembling of the die, and after the die is disassembled and assembled, the die is quickly reset, the tool changing speed is high, time and labor are saved, and the processing efficiency of the device is improved.

In summary, the embodiments of the present invention are merely exemplary embodiments, and are not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should fall within the technical scope of the present invention.

Claims

1. Automatic quick die change device of center of bending, its characterized in that: comprises an upper die clamping device, a bottom plate and an automatic die changing device; the upper die clamping device comprises a clamping tool rest and a clamping assembly arranged on the front end face of the lower part of the clamping tool rest; the bottom plate is arranged on the front end surface of the upper part of the upper die clamping device; the automatic die changing device is connected with the front end face of the bottom plate in a sliding mode.

2. The automated rapid die change device for the bending center according to claim 1, wherein: the automatic die changing device comprises a driving bottom plate, a driving motor, a cylinder, a connecting plate and a mechanical arm;

3. The automatic rapid die change device for the bending center according to claim 2, characterized in that: the mechanical arm comprises an arm mounting plate, a positioning pin, an arm cylinder and a clamping jaw which is linked with the arm cylinder;

the arm mounting plate is fixed at the bottom of the connecting plate; the clamping jaw is pivoted with one end of the arm mounting plate, and the tail end of the arm cylinder is pivoted with the other end of the arm mounting plate; the locating pin is arranged on one end face of the arm mounting plate and located above the clamping jaw.

4. The automated rapid die change device for the bending center according to claim 3, wherein: the mechanical arm comprises an arm mounting plate, a positioning pin and an expansion pin; the arm mounting panel is fixed the bottom of connecting plate, the locating pin install in an end surface of arm mounting panel, the round pin that expands is located the below of locating pin.

5. The automated rapid die change device for the bending center according to claim 2, 3 or 4, wherein: the front end face of the bottom plate is provided with a pair of guide rails, a gear rack is arranged between the pair of guide rails, and a transmission shaft of the driving motor is provided with a gear meshed with the gear rack.

6. The automated rapid die change device for the bending center according to claim 1, wherein: the automatic die changing device comprises a horizontal moving sliding table, a lifting cylinder, a horizontal cylinder, a connecting plate and a mechanical arm;

7. The automatic rapid die change device for the bending center according to claim 6, wherein: the mechanical arm comprises an arm mounting plate, a positioning pin, an arm cylinder and a clamping jaw linked with the arm cylinder;

the arm mounting plate is fixed at the bottom of the connecting plate; the clamping jaw is pivoted with one end of the arm mounting plate, and the tail end of the arm cylinder is pivoted with the other end of the arm mounting plate; the locating pin is located an terminal surface of arm mounting panel is located the top of jack catch.

8. The automated rapid die change device for the bending center according to claim 6 or 7, wherein: the front end surface of the bottom plate is provided with a pair of guide rails, and the other side surface of the horizontal moving sliding table is provided with a sliding block connected with the guide rails in a sliding manner;

9. The automated rapid die change device for the bending center according to claim 1, wherein: the clamping assembly comprises a swing arm support, an upper die pressing plate and a clamping element;

the front end face of the clamping tool rest is provided with a mounting groove opposite to the upper die pressing plate, one end of the clamping element is arranged in the mounting groove, and the other end of the clamping element is connected with the upper end part of the upper die pressing plate.

10. The automated rapid die change device for the bending center according to claim 1, wherein: and the automatic die changing device is provided with a sensor for identifying the specification and the position of the die.