CN114378149A

CN114378149A - Mould length micromatic setting and contain its automatic tool changing system

Info

Publication number: CN114378149A
Application number: CN202111571252.6A
Authority: CN
Inventors: 王勇; 王光耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-04-22
Anticipated expiration: 2041-12-21
Also published as: CN114378149B

Abstract

The invention discloses a mold length fine-tuning device and an automatic tool changing system comprising the same, wherein the mold length fine-tuning device comprises a mounting seat, a thin tool set, a working state thin tool selection assembly and a driving device, wherein the thin tool set is movably connected to the mounting seat; the thin knife group is formed by overlapping a plurality of thin knives; the working state thin knife selection assembly is provided with a selection part which selects different numbers of thin knives to do rotary motion through reciprocating linear motion. According to the die length fine-tuning device and the automatic tool changing system comprising the same, the thickness of the die can be changed only by driving the thin knife to turn over through the rotation and telescopic motion of the driving device, manual operation is not needed, and the working efficiency is greatly improved.

Description

Mould length micromatic setting and contain its automatic tool changing system

Technical Field

The invention relates to the technical field of machining and plate forming, in particular to a mold length fine adjustment device and an automatic tool changing system comprising the same.

Background

In the prior art, most bending machines or upward pressing (bending) cutters at the bending center are formed by splicing a plurality of molds with equal thickness or a plurality of groups of molds with different thicknesses, and when parts with different lengths or four sides (long sides and short sides) of a cuboid panel need to be folded, the molds need to be replaced or spliced again manually. Not only wastes manpower and reduces production efficiency, but also can not realize the automation and flexible production of bending processing.

Disclosure of Invention

In order to solve the technical problems that the length of a die needs to be adjusted manually, labor is wasted, and production efficiency is reduced in the bending machine in the prior art, the invention provides a die length fine adjustment device and an automatic tool changing system comprising the same to solve the problems.

The invention provides a mold length fine-adjustment device, which comprises a mounting seat, a thin cutter group, a working state thin cutter selection assembly and a driving device, wherein the thin cutter group and the working state thin cutter selection assembly are movably connected to the mounting seat; the thin knife group is formed by overlapping a plurality of thin knives; the upper part of the thin knife is provided with a circumferential inner hole for the thin knife selection assembly to pass through in a working state; the working state thin knife selection assembly is provided with a selection part which selects different numbers of thin knives to do rotary motion through reciprocating linear motion.

Further, the selection part can control the thin knife to reciprocate along the clamping direction of the dovetail groove of the thin knife and the system base so as to clamp or separate the dovetail groove of the thin knife and the system base.

The thin knife device further comprises a non-working state thin knife holding shaft which is circumferentially limited on the mounting seat and axially reciprocates through the action of a working state thin knife selection assembly, wherein a holding part which circumferentially limits one or more thin knives is arranged on the non-working state thin knife holding shaft; when the selection part drives one or more thin knives in the thin knife group to rotate, the retaining part limits the circumferential direction of the rest thin knives in the thin knife group.

Further, the selection part comprises a selection T shaft and a thin knife reset push rod which is connected with the selection T shaft in a sliding mode and moves back and forth synchronously with the thin knife; selecting the T shaft to be connected with a driving device; the mounting seat is movably connected with a locking block which can be clamped on the thin knife; the locking block can be clamped in a dovetail groove of the thin knife; along the reciprocating motion direction of the thin knife reset push rod, two ends of the thin knife reset push rod are respectively abutted against the circumferential inner hole, and one end of the thin knife reset push rod is elastically connected with the selection T shaft through an elastic piece; when the locking block is locked with the thin knife, the elastic piece deforms, and the dovetail groove of the thin knife is clamped with the system base; when the locking block is separated from the thin knife, the elastic piece resets, and the thin knife is separated from the system base.

Furthermore, a limit groove extending horizontally is arranged in a circumferential inner hole of the thin cutter; the selection T shaft is provided with a lug which is suitable for extending into the limiting groove, so that the thin knife can reciprocate along the extending direction of the limiting groove.

Furthermore, the bump is positioned at one end, close to the dovetail groove of the thin cutter, of the selection T shaft, and the other end of the selection T shaft is provided with a first working surface; a second working surface is arranged on the end surface of the thin knife reset push rod, which is opposite to the first working surface; when the locking block is locked with the thin knife, the first working surface is separated from the circumferential inner hole; when the locking block is separated from the thin knife, the first working surface and the second working surface form an arc surface which is abutted to the inner hole of the circumference.

Furthermore, the working state thin knife selection assembly also comprises a cylindrical shaft, one end of the cylindrical shaft is connected with the driving device, and the selection part is connected with the other end of the cylindrical shaft; the thin knife keeping shaft in the non-working state is sleeved on the cylindrical shaft and is suitable for being inserted into a circumferential inner hole of the thin knife, the keeping part is an axial guide block protruding out of the circumferential surface of the thin knife keeping shaft in the non-working state, and the axial guide block is matched with a thin knife keeping groove in the inner wall of the circumferential inner hole.

The invention also provides an automatic tool changing system which comprises a system base, a middle tool, a left standard tool, a right standard tool and the mold length fine-adjustment device, wherein the middle tool, the left standard tool and the right standard tool are in transmission fit with the system base, and the left standard tool and the right standard tool are respectively provided with a plurality of middle tools and are respectively arranged on two sides of the middle tool.

Furthermore, an ear knife is arranged in the automatic knife changing system, and a knife collecting block capable of being collected inwards is arranged on one side of the ear knife.

Furthermore, two sides of the automatic tool changing system in the length direction are respectively provided with a mold length fine-adjustment device, and the ear knife and the thin knife group are coaxially arranged on the mounting seat.

Furthermore, the ear knife comprises a knife body, a downward extending guide driving part and a circumferential limiting corner driving cylinder, the downward extending guide driving part is connected in the knife body in a sliding mode and drives the knife collecting block to move up and down, the corner driving cylinder can move up and down relative to the knife collecting block, and spiral grooves and limiting pins which are matched with each other are formed in the circumferential contact surfaces of the knife collecting block and the corner driving cylinder.

Furthermore, a cavity suitable for accommodating a downward extending guide driving cylinder and a corner driving cylinder is arranged in the ear knife, a connecting sleeve sleeved with the corner driving cylinder is fixed on the knife retracting block, the downward extending guide driving cylinder, the corner driving cylinder and the connecting sleeve divide the cavity into an upper cavity, a middle lower cavity and a lower cavity which are not communicated with each other, a first return spring is arranged in the middle upper cavity, a second return spring is arranged in the lower cavity, and a first air hole and a second air hole are formed in the knife body; the first air hole is communicated with the upper cavity, when the downward extending guide drive is positioned at the lowest part, the first return spring and the second return spring contract, and the second air hole is communicated with the middle lower cavity.

The invention has the beneficial effects that:

(1) according to the mold length fine-tuning device and the automatic tool changing system comprising the same, the thickness of the mold can be changed only by driving the turning of different numbers of thin tools through the rotation and telescopic motion of the selection part on the thin tool selection assembly in the working state, the structure is simple, the occupied space is small, manual operation is not needed, and the working efficiency is greatly improved.

(2) In the invention, for the thin knife in an internal locking mode, the number of the corresponding thin knives is selected by selecting the T shaft, the locking between the thin knives and the locking block and the loosening between the thin knives are realized by the reciprocating motion of the thin knife reset push rod, the reciprocating motion of the thin knife reset push rod can drive the thin knives to move, so that dovetail grooves on the thin knives can be separated from the locking block to rotate, and when the thin knives are locked by the locking block, the thin knives are circumferentially limited, and the bending work can be carried out.

(3) According to the invention, the ear knife is provided with the knife-retracting block which can move up and down and rotate, when the bending machine is used for processing, the outermost knife-retracting block can be retracted, so that the interference between the ear knife and a workpiece is avoided, and the knife can be conveniently and smoothly separated from the workpiece.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is an exploded view of an embodiment of a mold length adjustment apparatus according to the present invention;

FIG. 2 is a schematic view of an internally locked thin knife;

FIG. 3 is a schematic view of the locking of an internally locked thin blade to the base of the system;

FIG. 4 is a schematic view of an outer lock type thin knife;

FIG. 5 is a schematic locking view of an outer locking thin knife with a system base;

FIG. 6 is an exploded view of the thin knife selection assembly of FIG. 1 in the operating state;

FIG. 7 is a front view of the mold length vernier device shown in FIG. 1;

FIG. 8 is a sectional view taken along line A-A of FIG. 7 with the thin knife in an arbitrary state;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7 with the thin knife in a fully locked condition;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 7 with the thin knife in a fully unclamped state;

FIG. 11 is a schematic view showing a tool exchange state of the mold length fine-adjustment device shown in FIG. 1;

FIG. 12 is a schematic view of an automatic tool changing system in the form of PP;

FIG. 13 is a schematic view of an SA format automatic tool changing system;

FIG. 14 is a schematic view of an embodiment of the ear bud with a retracting block of the present invention (with the retracting block uppermost);

FIG. 15 is a schematic view of the retracting block of FIG. 14 moving downwardly to the lowermost position;

FIG. 16 is a schematic view of the retracting block of FIG. 15 rotated 90;

fig. 17 is a perspective view of the rotation angle drive cylinder of the ear knife shown in fig. 14.

FIG. 18 is a schematic view of the ear bud knife of FIG. 14 shown assembled without the knife retracted;

FIG. 19 is a schematic view of the ear knife of FIG. 14 when it is retracted after assembly.

In the figure, 1, a mounting seat, 11a, a locking hole, 12a, a shaft hole 2, a thin cutter, 201, a circumferential inner hole, 202, a limiting groove, 203, a dovetail groove, 205, an eccentric hole, 3, a driving device, 4, an operating state thin cutter selecting assembly, 401a, a selecting T shaft, 4011a, a bump, 4012a, a first working surface, 4013a, a sliding hole, 402a, a thin cutter resetting push rod, 4021a, a second working surface, 4022a, a sliding shaft, 4023a, a third working surface, 403a, an elastic piece, 404a, a cylindrical shaft, 5, a rotary coupling cylindrical surface, 6, a thin cutter retaining groove, 7, a vertical locking reference, 8, a horizontal locking reference, 9, a locking coupling surface, 10, a system base, 11, a locking block, 12, a telescopic motor, 13, a non-operating state thin cutter retaining shaft, 1301a, an axial guide block 15, a through groove, 16, a middle cutter, 17, a left standard cutter, 18, a right standard cutter, 19. the mold length fine-tuning device comprises a mold length fine-tuning device 24, a cutter body 25, a downward extending guide drive 26, a corner drive cylinder 27, a spiral groove 29, a connecting sleeve 30, an upper cavity 31, an upper middle cavity 32, a lower middle cavity 33, a lower cavity 34, a first return spring 35, a second return spring 36, a first air hole 37, a second air hole 38, a guide column 39 and a workpiece.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1-3, a mold length fine-tuning device comprises a mounting base 1, a thin knife group and a working state thin knife selecting assembly 4 movably connected to the mounting base 1, and a driving device 3 for driving the working state thin knife selecting assembly 4 to make a rotary motion and a reciprocating linear motion; the thin knife group is formed by overlapping a plurality of thin knives 2; the upper part of the thin knife 2 is provided with a circumferential inner hole 201 for the thin knife selection component 4 to pass through in a working state; the thin knife selecting component 4 is provided with a selecting part which selects different numbers of thin knives 2 to rotate through reciprocating linear motion. The mounting seat 1 is mounted on the system base 10, the mounting seat 1 is moved to drive the mold length fine-adjustment device 19 to be integrally conveyed on the system base 10, the motion state of the selection part is the same as that of the working state thin blade selection assembly 4, therefore, when the driving device 3 generates linear motion kinetic energy, the selection part does linear motion along the axial direction of a circumferential inner hole, at the moment, different numbers of thin blades 2 can be selected to be matched with the selection part, when the driving device 3 generates rotary kinetic energy, the selection part does rotary motion, and at the moment, the thin blades 2 can be driven to rotate to the working position. The thin knife 2 is divided into an inner locking mode and an outer locking mode according to different locking structures, and as shown in figures 2-5, the thin knife 2 in the two modes is provided with a rotary coupling cylindrical surface 5, a thin knife holding groove 6, a vertical locking datum 7, a horizontal locking datum 8 and a locking coupling surface 9. The rotary coupling cylindrical surface 5 is the inner circumferential surface of a circumferential inner hole 201 of the thin knife 2, the thin knife holding groove 6 is inwards recessed from the inner circumferential surface of the circumferential inner hole 201, the vertical locking datum 7 and the horizontal locking datum 8 are attached to the system base 10, and the locking coupling surface 9 fixes the system base 10, the thin knife 2 and the mounting seat 1.

In contrast, in the thin blade 2 of the inner locking type, the horizontal locking reference 8 and the locking coupling surface 9 both extend to form an included angle (generally a right angle, each forming an angle of 45 ° with the horizontal plane) which may not be on the same horizontal plane (as shown in fig. 2); the horizontal locking datum 8 and the vertical locking datum 7 in the thin knife 2 in the external locking mode are perpendicular to each other (as shown in figure 4); different locking datum planes and different locking blocks 11 are arranged on the system base 10 corresponding to the two thin knife 2 locking structures, and in addition, the matching relation between the selection part and the thin knife 2 is also different.

For the thin knife 2 of the external locking type, the locking block 11 is connected to the system base 10 and the locking coupling surface 9 (as shown in fig. 5) on the outer side of the thin knife 2, and the thin knife 2 can be rotated after the locking block 11 is removed. For the thin blade 2 in the inner locking mode, the thin blade 2 is provided with two dovetail grooves 203, the dovetail grooves 203 are formed by intersecting two plane acute angles, the locking block 11 is clamped in the inner dovetail groove 203, when the locking block 11 is in the locking state, the outer dovetail groove 203 is also matched and clamped with the system base 10 (as shown in fig. 3), and if the thin blade 2 is rotated, the thin blade 2 needs to translate a distance in the clamping direction of the dovetail groove 203 and the system base 10, so that the outer dovetail groove 203 and the system base 10 are staggered. For this reason, it is preferable that the selection portion controls the thin blade 2 to reciprocate in a direction in which the dovetail groove 203 of the thin blade 2 is engaged with the system base 10, so that the dovetail groove 203 of the thin blade 2 is engaged with or disengaged from the system base 10. The "dovetail groove 203 and the system base 10 click direction" is a generally horizontal direction in a plane parallel to the end face of the thin blade 2.

Example one

As shown in fig. 1, a die length fine-adjustment device 19 is used for a thin blade 2 in an inner locking form, and a system base 10 is engaged with an outer dovetail groove 203 of a thin blade when a locking block 11 is in a locked state. The mold length fine adjustment device 19 includes:

the mounting seat 1 comprises a top plate, a front baffle plate and two side plates, wherein a motor shaft of the driving device 3 and a shaft hole 12a through which the working state thin knife selection assembly 4 passes are arranged on the side plates, a locking hole 11a through which the locking block 11 passes is formed in the front baffle plate, the front baffle plate is long in strip shape, and the locking block 11 can be located at any axial position on the locking hole 11 a.

The thin knife tackle is formed by overlapping a plurality of thin knives 2 and is positioned between two side plates of the mounting seat 1, and the two side plates axially limit the thin knife tackle.

The working state thin knife selecting component 4 comprises a selecting part which is suitable for driving one or more thin knives 2 to rotate, and the selecting part is positioned in a circumferential inner hole 201 of the thin knife 2.

The driving device 3 is fixed on the system base 10 or the mounting seat 1, the driving device 3 can drive the working state thin knife selection assembly 4 to do rotary motion and can also drive the working state thin knife selection assembly 4 to do reciprocating linear motion, the driving device 3 can select a double-acting motor, a motor shaft of the driving device 3 penetrates through a shaft hole 12a to be connected with the selection part and drive the working state thin knife selection assembly 4 to do rotary motion and reciprocating linear motion, when the locking block 11 is inserted into the locking hole 11a and clamped into the dovetail groove 203 corresponding to one or more thin knives 2, the thin knife 2 is fixed with the mounting seat 1 under the double limiting action of the locking block 11 and the working state thin knife selection assembly 4, and meanwhile, the system base 10 is matched and clamped with the outer dovetail groove 203 of the thin knife.

As shown in fig. 6 to 11, the selection portion includes a selection T-shaft 401, a thin blade reset push rod 402a slidably connected to the selection T-shaft 401 and reciprocating in synchronization with the thin blade; the selection T-axis 401 is connected to the drive device 3; along the reciprocating direction of the thin knife reset push rod 402a, two ends of the thin knife reset push rod 402a are respectively abutted with the circumferential inner hole 201 (the structure can enable the thin knife reset push rod 402a and the thin knife 2 to synchronously move), and one end of the thin knife reset push rod is elastically connected with the selection T shaft 401 through an elastic piece 403 a; when the locking block 11 is clamped in the dovetail groove 203 on the inner side of the thin knife 2, the elastic piece 403a deforms, the dovetail groove 203 on the outer side of the thin knife 2 is clamped with the system base 10, and the fixed thin knife 2 is in a working state; when the locking block 11 is disengaged from the dovetail groove 203 inside the thin blade 2, the elastic member 403a is restored, and the elastic member 403a pushes the thin blade 2 to move in the reverse direction, so that the thin blade 2 is separated from the system base 10.

The locking block 11 is preferably driven by the telescopic motor 12 to do linear reciprocating motion, the moving direction of the locking block 11 is parallel to the axial direction of the circumferential inner hole 201, the locking block 11 can lock and fix different numbers of thin knives 2 through the reciprocating linear motion of the locking block 11, after a certain number of working state thin knives 2 are selected, the locking block 11 fixes the working state thin knives 2, as shown in fig. 8, no matter whether the thin knives 2 are in a working state, the locking block 11 is always in the locking hole 11a, the working state thin knives 2 are connected in sequence, and the working state thin knives 2 and the non-working state thin knives 2 are respectively distributed on two sides. As shown in fig. 9 and 10, the front end and the rear end of the thin knife reset push rod 402a are attached to the circumferential inner hole 201, the front end of the thin knife reset push rod 402a is one end close to the locking block 11 along the direction of the limiting groove 202, the front end of the elastic piece 403a is connected with the thin knife reset push rod 402a, and the rear end is connected with the selection T-shaft 401. Since the driving device 3 is fixed on the mounting base 1 or the system base 10, the selection T-shaft 401 only makes axial reciprocating motion or rotational motion, when the selection T-shaft 401 moves, the thin knife reset push rod 402a moves synchronously with the selection T-shaft 401, when the selection T-shaft 401 does not move, the thin knife reset push rod 402a can move along the dovetail groove 203 of the thin knife 2 and the system base 10 in the clamping direction alone, and both ends of the thin knife reset push rod 402a are always abutted to the circumferential inner hole 201 of the thin knife 2, so that the thin knife reset push rod 402a and the thin knife 2 always move synchronously, when the locking block 11 is clamped in the dovetail groove 203, the locking block 11 has a thrust force towards the selection T-shaft 401 to the thin knife 2, the thin knife reset push rod 402a and the thin knife 2 displace together to contract the elastic member 403a, and at this time, the outer side of the dovetail groove 203 of the thin knife 2 and the system base 10 are in the clamping state (as shown in fig. 9), when the locking block 11 is released, the thrust force applied to the thin blade 2 disappears, and the thin blade 2 is reversely translated (the thin blade return push rod 402a is also translated) by the elastic force of the elastic member 403a, so that the outer dovetail groove 203 is separated from the system base 10 (as shown in fig. 10).

The elastic member 403a may also be connected in such a way that the front end of the elastic member 403a is connected to the selection T-shaft 401, the rear end of the elastic member 403a is connected to the thin blade return push rod 402a, and when the locking block 11 is engaged in the dovetail groove 203, the elastic member 403a stretches.

The moving direction of the thin knife reset push rod 402a can be controlled by the following structure: a horizontally extending limiting groove 202 is formed in a circumferential inner hole 201 of the thin knife 2; the T-shaft 401 is selected to have a projection 4011a adapted to protrude into the stopper groove 202 so as to reciprocate the thin blade 2 in the extending direction of the stopper groove 202. The cooperation of the protrusion 4011a and the limiting groove 202 can limit the moving direction of the thin knife reset push rod 402a, so that the thin knife reset push rod can move along a straight line, and can also help to stir the rotary motion of the thin slice 2.

The selection T-shaft 401 is mainly used for connecting with the driving device 3, and as a basis for the sliding connection of the thin blade reset push rod 402a, the selection T-shaft 401 may have any shape, and in a preferred arrangement, as shown in fig. 6, one end of the selection T-shaft 401 far away from the elastic member 403a is an arc-shaped surface, which is defined as a first working surface 4012a here, the thin blade reset push rod 402a has a second working surface 4021a facing the same direction as the first working surface 4012a and a third working surface 4023a facing away from the first working surface 4012a, the protrusion 4011a is located at one end of the selection T-shaft 401 near the dovetail groove 203, and the arc-shaped surface is composed of the first working surface 4012a located at the other end of the selection T-shaft 401 and the second working surface 4021a located at the end of the thin blade reset push rod 402 a; when the locking block 11 is clamped in the dovetail groove 203 of the thin blade 2, the first working surface 4012a is separated from the circumferential inner hole 201, and the thin blade 2 does not need to be rotated at this time; when the locking block 11 is separated from the dovetail groove 203 of the thin blade 2, the first working surface 4012a abuts against the circumferential inner hole 201 and is connected with the second working surface 4021a to form an arc surface, and at this time, the thin blade 2 can be driven to rotate.

As shown in fig. 6, the first working surface 4012a is an incomplete cylindrical surface, a sliding hole 4013a is provided on the selection T-axis 401, the thin blade reset push rod 402a reciprocates along the sliding hole 4013a through the sliding axis 4022a and is reset through the elastic member 403a, and in the reset state (i.e., the unclamped state during blade replacement), the first working surface 4012a and the second working surface 4021a overlap; the second work surface 4021a on the thin knife reset push rod 402a is coaxial with the third work surface 4023a and has an equal radius.

Example two

In the first embodiment, the thin blade 2 in the working state is locked by the locking block 11, while the thin blade 2 in the non-working state is not provided with a locking structure, and in actual processing, the thin blade 2 in the non-working state is in an upward-turning state, so that a corresponding locking structure is needed to fix the thin blade in the circumferential direction to avoid the thin blade from turning downward, and for this reason, the following structures are added on the basis of the first embodiment:

the mold length fine-adjustment device 19 further comprises a non-working state thin cutter retaining shaft 13 which is circumferentially limited on the mounting seat 1 and is driven by the working state thin cutter selection assembly 4 to axially reciprocate, and a retaining part which circumferentially limits one or more thin cutters 2 is arranged on the non-working state thin cutter retaining shaft 13; when the selection part drives one or more thin knives 2 in the thin knife group to rotate, the remaining thin knives 2 in the thin knife group are limited in the circumferential direction by the holding part.

Specifically, as shown in fig. 1, 7 and 8, the working state thin blade selecting assembly 4 further includes a cylindrical shaft 404a having one end connected to the driving device 3, and the selecting portion is connected to the other end of the cylindrical shaft 404 a; the thin knife keeping shaft 13 in the non-working state is sleeved on the cylindrical shaft 404a and is suitable for being inserted into the circumferential inner hole 201 of the thin knife 2, the keeping part is an axial guide block 1301a protruding out of the circumferential surface of the thin knife keeping shaft 13 in the non-working state, the axial guide block 1301a is matched with the thin knife keeping groove 6 on the inner wall of the circumferential inner hole 201, and in addition, a through groove 15 matched with the axial guide block 1301a is also arranged on the mounting seat 1 and is used for limiting the rotation of the thin knife keeping shaft 13 in the non-working state.

The thin knife holding shaft 13 in the non-working state is set to be tubular (as shown in fig. 3-1), the inner cylindrical surface of the thin knife holding shaft 13 in the non-working state is sleeved into the cylindrical shaft 404a, one or more axial guide blocks 1301a are arranged on the outer cylindrical surface, the thin knife holding shaft 13 in the non-working state and the cylindrical shaft 404a can rotate relatively, so that the thin knife holding shaft 13 in the non-working state can only move axially and can not rotate, and the axial guide blocks 1301a can be semicylinders or cylinders with triangular or other polygonal sections; the number of the side plates on the mounting base 1 is increased from two to three, the thin knife holding shaft 13 in the non-working state is mounted on the two side plates on the left side, and the guide grooves with the same shape and number are correspondingly arranged on the side plates, when the thin knife 2 rotates to the non-working state, the axial guide block 1301a is just opposite to the thin knife holding groove 6 on the thin knife 2, otherwise, the thin knife holding groove 6 is arranged on the thin knife holding shaft 13 in the non-working state, and the bosses matched with the thin knife holding groove 6 are arranged on the mounting base 1 and the thin knife 2.

In the reset state (i.e., the released state when the tool is changed), the first working surface 4012a and the second working surface 4021a overlap with each other, and also overlap with the tubular outer cylindrical surface of the non-working state thin tool holding shaft 13.

The locking and unlocking states of the thin knife 2 are described as follows: when all the thin knives 2 are in a working state (namely in a locking state in fig. 9), under the action of a telescopic motor 12 (which can also be a locking driving cylinder or a hydraulic cylinder), the locking block 11 is in a locking position, the locking block 11 is combined with the locking coupling surfaces 9 of all the thin knives 2 in the working state, and the horizontal locking datum 8 and the vertical locking datum 7 of the thin knives 2 are driven to be attached to the horizontal datum and the vertical datum of the system base 10; when the locking block 11 is at the release position (as shown in fig. 9), the locking block 11 is not in contact with all the locking coupling surfaces 9 of the thin knives 2, under the pushing action of the thin knife reset push rod 402a and the guiding action of the projection 4011a, the horizontal locking datum 8 of the thin knife 2 moves towards the direction away from the horizontal locking datum 8 of the system base 10, and after the moving away is completed, the rotary coupling cylindrical surface 5, the first working surface 4012a and the non-working state thin knife holding shaft 13 are in a concentric state, that is, the working state thin knife selection assembly 4 can slide left and right in the hole formed by overlapping the rotary coupling cylindrical surfaces 5 under the driving of the driving device 3, so that the selection T shaft 401 can select different numbers of thin knives 2 to be in the working state, and the non-working state thin knives 2 are limited by the non-working state thin knife holding shaft 13.

The realization process of the quick fine adjustment of the length of the die comprises the following steps:

the method comprises the following steps: the locking block 11 retracts under the driving of a telescopic motor 12 (which can also be a locking driving cylinder or a hydraulic cylinder), and the thin knife 2 moves forwards along the guide of the limiting groove 202 under the driving of a thin knife reset push rod 402 a.

Step two: in the working state, the thin knife selecting assembly 4 is driven by the driving device 3 to rotate (the thin knife rotates 180 degrees counterclockwise in fig. 7).

Step three: the working state thin blade selecting component 4 moves linearly under the drive of the driving device 3, so that the selecting T shaft 401 is coupled with all thin blades 2 which are to be in a working state, and the thin blades 2 which are to be in a non-working state are coupled with the non-working state thin blade holding shaft 13.

Step four: the working state thin knife selecting component 4 is driven by the driving device 3 to make reverse rotation movement, and the working state thin knife 2 is rotated to the position of the working state (as shown in figure 11).

Step five: the telescopic motor 12 (which may also be a locking driving cylinder or a hydraulic cylinder) drives the locking block 11 to enter a locking position, and simultaneously automatically drives all the working state thin knives 2 to be locked along the guide of the limiting groove 202 to reach a working state.

The invention also provides an automatic tool changing system, which comprises a system base 10, a middle tool 16, a left standard tool 17, a right standard tool 18 and the above-mentioned mold length fine-adjustment device 19, wherein the middle tool 16, the left standard tool 17 and the right standard tool 18 are in transmission fit with the system base 10, and the left standard tool 17 and the right standard tool 18 are respectively provided with a plurality of tools and are respectively arranged at two sides of the middle tool 16.

The thin knife 2 consists of an upper part, a middle part and a lower part, a circumferential inner hole 201 is positioned at the upper part of the thin knife 2, the structures of the left standard knife 17 and the right standard knife 18 are the same as the structures of the middle part and the lower part of the thin knife 2, in the working state, the circumferential inner hole 201 is positioned obliquely above the middle part of the thin knife 2, and after the thin knife 2 rotates 180 degrees around the circumferential inner hole 201, the thin knife 2 turns upwards and leaves the position below the circumferential inner hole 201 to enable the left standard knife 17 and the right standard knife 18 to fill the position.

The automatic tool changing system is divided into a PP form and an SA form according to the shape of a standard tool step, so that the corresponding die length fine-adjusting device 19 also has two forms, namely simply, a thin tool 2 on the edge is changed into an ear tool (PP form) with an ear on one side, the SA form can directly install and fix the die length fine-adjusting device 19 on the system base 10, and the PP form needs to install the die length quick-fine-adjusting device on a linear guide rail and then on the system base 10 and is driven by a roller screw rod or a synchronous belt to move left and right in the horizontal direction.

EXAMPLE III

An automatic tool changing system in a PP mode is shown in figure 12 and comprises a system base 10, a middle knife 16, a left standard knife 17, a right standard knife 18 and a die length fine-adjustment device 19, wherein the middle knife 16, the left standard knife 17, the right standard knife 18 and the middle knife 16 can move left and right in the horizontal direction, the die length fine-adjustment device 19 is not provided with an ear knife, the two die length fine-adjustment devices 19 are positioned on the left side and the right side of the middle knife 16, the ear knife with an ear is arranged on the outer side of the die length fine-adjustment device 19, and the left standard knife 17 and the right standard knife 18 can be arranged between the two die length fine-adjustment devices 19 and the middle knife 16 respectively.

When the length of the die needs to be finely adjusted, the thin knives 2 in the die length fine adjustment device 19 can be rotated to enable the non-working thin knives to rotate to the upper side (generally, all the thin knives 2 rotate to the upper side and then the working thin knives rotate downwards), then the standard knives are moved to the die length fine adjustment device 19 for jointing, and the non-working thin knives move to the other side from one side of the circumferential inner hole 201 after being rotated, and the movement route of the standard knives is located at the side of the working thin knives 2, so that the non-working thin knives cannot hinder the jointing of the standard knives and the working thin knives.

Example four

An automatic tool changing system in an SA mode is shown in fig. 13, and includes a system base 10, a middle knife 16 mounted on the system base 10, a die length fine-adjustment device 19, and a left standard knife 17 and a right standard knife 18 which can move left and right in a horizontal direction, where the left standard knife 17 and the right standard knife 18 are both ear knives, the middle knife 16 is located in the middle of the system base 10 in the horizontal direction, the two die length fine-adjustment devices 19 are located on the left and right sides of the middle knife 16, the middle knife 16 and the thin knife 2 in the die length fine-adjustment device 19 are both free of ears, a length adjustment method of the die length fine-adjustment device 19 is the same as that in the third embodiment, and after adjustment is completed, the standard knife is moved close to the die length fine-adjustment device 19.

EXAMPLE five

When the bending center is machined, the ear knives at the outermost sides of the two sides are required to be retracted frequently, so that the interference between the ear knives and a workpiece 39 is avoided, the bending knives and the workpiece are separated smoothly, in order to achieve the function, the blade collecting blocks 22 capable of being retracted in a rotating mode can be arranged on the outermost ear knives of the automatic tool changing system, the two sides of the length direction of the automatic tool changing system are respectively provided with a die length fine-adjusting device 19 for the automatic tool changing system in a PP mode, at the moment, the ear knives and the standard knives are located on the two sides of the die length fine-adjusting device 19, a set of independent structure is required to move the ear knives, and the ear knives and the thin knife sets can be coaxially arranged on the mounting base 1 in order to simplify the structure, and therefore the ear knives and the thin knife sets can be driven to move inwards or outwards together through the mounting base 1.

The structure of the middle ear knife of this embodiment is as follows: the ear knife comprises a knife body 24, a downward extending guide drive 25 and a circumferential limiting corner drive cylinder 26, wherein the downward extending guide drive 25 is connected in the knife body 24 in a sliding mode and drives the knife retracting block 22 to move up and down, the corner drive cylinder 26 can move up and down relative to the knife retracting block 22, and a spiral groove 27 and a limiting pin which are matched with each other are formed in the circumferential contact surface of the knife retracting block 22 and the corner drive cylinder 26.

The downward extending guide drive 25 is used for driving the cutter retracting block 22 to ascend or descend, the corner drive cylinder 26 can be circumferentially limited through the downward extending guide drive 25, and when the corner drive cylinder 26 moves up and down relative to the cutter retracting block 22, the cutter retracting block 22 rotates under the action of the spiral groove 27.

Specifically, as shown in fig. 14-19, a cavity suitable for accommodating the downward extending guide driving cylinder 25 and the corner driving cylinder 26 is arranged in the cutter body 24, a connecting sleeve 29 sleeved with the corner driving cylinder 26 is fixed on the cutter collecting block 22, the cavity is divided into an upper cavity 30, a middle upper cavity 31, a middle lower cavity 32 and a lower cavity 33 which are not communicated with each other by the downward extending guide driving cylinder 25, the corner driving cylinder 26 and the connecting sleeve 29, a first return spring 34 is arranged in the upper cavity 31, a second return spring 35 is arranged in the lower cavity 33, and a first air hole 36 and a second air hole 37 are arranged on the cutter body 24; the first air hole 36 communicates with the upper chamber 30, and when the lower extension guide driver 25 is at the lowermost position, the first return spring 34 and the second return spring 35 contract, and the second air hole 37 communicates with the lower and middle chambers 32.

The downward extending guide driving device 25, the corner driving cylinder 26 and the connecting sleeve 29 are similar to pistons which are sleeved with each other, the downward extending guide driving device 25 and the corner driving cylinder 26 realize circumferential limit of the two through a non-circular contact surface, the upper end of the downward extending guide driving device 25 is sleeved on a guide column 38 fixed with the cutter body 24, the downward extending guide driving device 25 and the guide column 38 are also connected through the non-circular contact surface, and the corner driving cylinder 26 can be limited circumferentially because the guide column 38 is fixed with the cutter body 24.

The separation of the cavities can be realized by shaft shoulders arranged at the end parts of the downward extending guide driver 25, the corner driving cylinder 26 and the connecting sleeve 29, and the upper cavity 30, the middle upper cavity 31, the middle lower cavity 32 and the lower cavity 33 are respectively positioned between two adjacent shaft shoulders. The lower end of the downward extending guide driver 25 passes through the corner driving cylinder 26 to abut against the cutter retracting block 22, when the cutter retracting block 22 is at the top (as shown in fig. 14), the first air hole 36 is used for air intake, the downward extending guide driver 25 drives the cutter retracting block 22 and the connecting sleeve 29 to move downwards to cause the second return spring 35 to contract, meanwhile, the downward extending guide driver 25 presses the corner driving cylinder 26 downwards through the first return spring 34 until the cutter retracting block 22 reaches the bottom position (as shown in fig. 15), then the first air hole 37 and the second air hole 37 are used for air intake simultaneously, at the moment, the downward extending guide driver 25 keeps the position unchanged, the corner driving cylinder 26 rises due to the increase of the pressure in the middle lower cavity 32, the corner driving cylinder 26 and the cutter retracting block 22 move up and down relatively, and the cutter retracting block 22 rotates (as shown in fig. 16) under the action of the spiral groove 27.

When the embodiment is applied to an automatic tool changing system, only two outermost ear knives need to be rotated to retract the tool (as shown in fig. 18 and 19, which are schematic diagrams comparing before and after retraction).

In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for ease of description and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a mould length micromatic setting which characterized in that: the device comprises a mounting seat, a thin knife group movably connected to the mounting seat, a working state thin knife selection assembly and a driving device for driving the working state thin knife selection assembly to do rotary motion and reciprocating linear motion; the thin knife group is formed by overlapping a plurality of thin knives; the upper part of the thin knife is provided with a circumferential inner hole for the thin knife selection assembly to pass through in a working state;

the working state thin knife selection assembly is provided with a selection part which selects different numbers of thin knives to do rotary motion through reciprocating linear motion.

2. The mold length fine adjustment device according to claim 1, characterized in that: the selection part can control the thin knife to reciprocate along the clamping direction of the dovetail groove of the thin knife and the system base so as to clamp or separate the dovetail groove of the thin knife and the system base.

3. The mold length fine adjustment device according to claim 2, characterized in that: the thin cutter holding shaft is limited on the mounting seat in the circumferential direction and is driven by the working state thin cutter selection assembly to reciprocate in the axial direction, and a holding part for limiting one or more thin cutters in the circumferential direction is arranged on the non-working state thin cutter holding shaft;

when the selection part drives one or more thin knives in the thin knife group to rotate, the retaining part limits the circumferential direction of the rest thin knives in the thin knife group.

4. The mold length fine adjustment device according to claim 3, characterized in that: the working state thin knife selection assembly further comprises a cylindrical shaft, one end of the cylindrical shaft is connected with the driving device, and the selection part is connected with the other end of the cylindrical shaft;

the thin knife keeping shaft in the non-working state is sleeved on the cylindrical shaft and is suitable for being inserted into a circumferential inner hole of the thin knife, the keeping part is an axial guide block protruding out of the circumferential surface of the thin knife keeping shaft in the non-working state, and the axial guide block is matched with a thin knife keeping groove in the inner wall of the circumferential inner hole.

5. The mold length fine-adjustment device according to any one of claims 2 to 4, wherein: the selection part comprises a selection T shaft and a thin knife reset push rod which is connected with the selection T shaft in a sliding mode and synchronously reciprocates with the thin knife; selecting the T shaft to be connected with a driving device; the mounting seat is movably connected with a locking block which can be clamped on the thin knife;

along the reciprocating motion direction of the thin knife reset push rod, two ends of the thin knife reset push rod are respectively abutted against the circumferential inner hole, and one end of the thin knife reset push rod is elastically connected with the selection T shaft through an elastic piece;

when the locking block is locked with the thin knife, the elastic piece deforms, and the dovetail groove of the thin knife is clamped with the system base; when the locking block is separated from the thin knife, the elastic piece resets, and the thin knife is separated from the system base.

6. The die length fine adjustment device according to claim 5, characterized in that: a horizontally extending limiting groove is formed in a circumferential inner hole of the thin cutter; the selection T shaft is provided with a lug which is suitable for extending into the limiting groove, so that the thin knife can reciprocate along the extending direction of the limiting groove.

7. The mold length fine adjustment device according to claim 6, characterized in that: the convex block is positioned at one end, close to the dovetail groove of the thin cutter, of the selection T shaft, and a first working surface is arranged at the other end of the selection T shaft; a second working surface is arranged on the end surface of the thin knife reset push rod, which is opposite to the first working surface;

when the locking block is locked with the thin knife, the first working surface is separated from the circumferential inner hole; when the locking block is separated from the thin knife, the first working surface and the second working surface form an arc surface which is abutted to the inner hole of the circumference.

8. An automatic tool changing system is characterized in that: the die length fine adjustment device comprises a system base, a middle knife, a left standard knife, a right standard knife and the die length fine adjustment device, wherein the middle knife, the left standard knife and the right standard knife are in transmission fit with the system base, the die length fine adjustment device comprises the die length fine adjustment device according to any one of claims 1 to 7, and the left standard knife and the right standard knife are respectively provided with a plurality of middle knives and are respectively arranged on two sides of the middle knives.

9. The automatic tool changing system of claim 8, wherein: the automatic tool changing system is provided with an ear knife, and one side of the ear knife is provided with a tool collecting block capable of being collected inwards.

10. The automatic tool changing system of claim 9, wherein: two sides of the automatic tool changing system in the length direction are respectively provided with a mold length fine-adjustment device, and the ear knife and the thin knife set are coaxially arranged on the mounting seat.

11. The automatic tool changing system of claim 9, wherein: the ear knife comprises a knife body, a downward extending guide driving part and a circumferential limiting corner driving cylinder, the downward extending guide driving part is connected in the knife body in a sliding mode and drives a knife retracting block to move up and down, the corner driving cylinder can move up and down relative to the knife retracting block, and a spiral groove and a limiting pin which are matched with each other are formed in the circumferential contact surface of the knife retracting block and the corner driving cylinder.

12. The automatic tool changing system of claim 11, wherein: the cutter body is internally provided with a cavity suitable for accommodating a downward extending guide driving cylinder and a corner driving cylinder, a connecting sleeve sleeved with the corner driving cylinder is fixed on the cutter retracting block, the downward extending guide driving cylinder, the corner driving cylinder and the connecting sleeve divide the cavity into an upper cavity, a middle lower cavity and a lower cavity which are not communicated with each other, a first reset spring is arranged in the middle upper cavity, a second reset spring is arranged in the lower cavity, and the cutter body is provided with a first air hole and a second air hole; the first air hole is communicated with the upper cavity, when the downward extending guide drive is positioned at the lowest part, the first return spring and the second return spring contract, and the second air hole is communicated with the middle lower cavity.