CN215747984U - Tool changing structure - Google Patents

Abstract

The utility model discloses a tool changing structure, comprising: the tool magazine assembly comprises a first rotary driving device and a cutter head, a plurality of first tool clamping elements are uniformly distributed on the cutter head in the circumferential direction, and a first tool taking position is arranged on the tool magazine assembly; the cutter taking mechanism comprises a first driving device and a second cutter clamping piece, and the second cutter clamping piece moves between a first cutter taking position and a second cutter taking position; and an extension mechanism including an extension drive and a third knife holder. The second cutter clamping piece can take out the cutter from the first cutter taking position to move to the second cutter taking position, the third cutter clamping piece clamps the cutter from the second cutter taking position and then extends out in the direction far away from the cutter head, and the peripheral machining spindle can clamp the cutter on the third cutter clamping piece at the position far away from the cutter head to change the cutter. This technique is sent the cutter to the processing main shaft tool changing through stretching out the mechanism to increased and flown the degree of difficulty that the bits fly to the tool changing structure from the machining area, reduced and flown the bits and spatter the liquid and fly to the tool changing subassembly on, be favorable to reducing the influence to normal processing.

Description

Tool changing structure

Technical Field

The utility model relates to the technical field of machining equipment, in particular to a tool changing structure.

Background

The machine tool is a common machining device, and part of the machine tool is provided with a tool changing structure, so that the automatic replacement of the tool can be realized. The work piece can produce the material bits in the course of working, and processing auxiliary liquid also can splash, and the tool changing structure sets up in the position that is close to the machining area, flies the bits and can splash the tool changing structure with splashing liquid often, causes the damage of the components and parts of tool changing structure easily, influences the normal work of machine tool. Those skilled in the art would like to have a tool changing structure that reduces the impact of flying chips and splashed liquid on the tool changing structure.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a tool changing structure, and aims to solve the technical problem that the tool changing structure in the prior art is easily affected by flying chips to normally process.

In order to achieve the above object, the present invention provides a tool changing structure, including:

the tool magazine assembly comprises a first tool conveying device, the first tool conveying device comprises a first tool fixing end and a first tool moving end, a plurality of first tool clamping pieces which are sequentially arranged are arranged on the first tool moving end, a first tool taking position is arranged on the tool magazine assembly, the first tool moving end can drive the first tool clamping pieces to sequentially pass through the first tool taking position, and a second tool taking position is arranged on one side, far away from the first tool conveying device, of the first tool taking position;

the cutter taking mechanism comprises a first driving device, the first driving device comprises a first fixed end and a first moving end, the first fixed end and the first cutter fixed end are relatively fixed, a second cutter clamping piece is arranged on the first moving end, and the first moving end can drive the second cutter clamping piece to move between the first cutter taking position and the second cutter taking position;

stretch out the mechanism, it is including stretching out drive arrangement, stretch out drive arrangement including stretching out the stiff end and stretching out the motion end, stretch out the stiff end with first cutter stiff end relatively fixed, it is equipped with third cutter clamping piece to stretch out the motion to serve, third cutter clamping piece is located the second is got keeping away from of sword position the first one side of getting the sword position, it can drive to stretch out the motion end third cutter clamping piece is along being close to or keeping away from the direction motion that the sword position was got to the second.

The first tool clamping elements on the first tool moving end can clamp a plurality of tools, the first tool moving end can drive the tools to sequentially pass through the first tool taking position, and the tools to be replaced can be moved to the first tool taking position; the second tool clamping piece and the third tool clamping piece can clamp tools, the first moving end of the first driving device drives the second tool clamping piece to move at the first tool taking position and the second tool taking position, and the second tool clamping piece can take the tools out of the first tool taking position, move out of the first tool moving end and then move to the second tool taking position; the extension moving end of the extension driving device can drive the third tool clamping piece to clamp a tool from the second tool taking position and then extend out in the direction far away from the tool magazine component, and the peripheral machining spindle can clamp the tool on the third tool clamping piece at the position far away from the tool magazine component for tool changing; after tool changing is finished, the moving end is extended out to drive the third tool clamping piece to retract, and then the machining spindle machines the workpiece. This technique is sent the cutter to the processing main shaft tool changing through stretching out the mechanism to increased and flown the degree of difficulty that the bits fly to the tool changing structure from the machining area, reduced and flown the bits and spatter the liquid and fly to the tool changing structure, be favorable to reducing and fly the influence of bits to normal processing.

Preferably, get sword mechanism still including locating second drive arrangement on the first motion end, second drive arrangement includes second stiff end and second motion end, the second stiff end connect in on the first motion end, the second presss from both sides the cutter and locates on the second motion end, the second motion end can drive the second presss from both sides the cutter and follows the motion of upper and lower direction, the second press from both sides the cutter be located with first getting sword position corresponds the top of first clamp cutter.

The second cutter clamping piece clamps the cutter from the upper side of the cutter, and can be staggered with the first cutter clamping piece, so that the cutter clamping is not influenced; when the second cutter clamping piece is at the first position of taking the sword position, the second motion end of second drive arrangement drives the second cutter clamping piece earlier and presss from both sides the cutter from the upside of cutter downwards, then the first motion end drives the second cutter clamping piece and gets the sword position motion to the second, and behind third cutter clamping piece centre gripping cutter, the cutter is loosened to the second cutter clamping piece, and the second motion end drives the second cutter clamping piece upward movement and leaves the cutter to it gets the cutter to realize that third cutter clamping piece presss from both sides the sword.

Preferably, the first sliding seat of fixedly connected with is served to the first motion, the second stiff end with first sliding seat relatively fixed, the motion of horizontal direction can be followed to the second motion end, it is connected with the transmission connecting rod of rotation from top to bottom to rotate on the first sliding seat, the transmission connecting rod with the connecting axle of first sliding seat is called first pivot, follow upper and lower direction sliding connection on the first sliding seat and have the second sliding seat, the second presss from both sides the cutter spare and locates on the second sliding seat, the transmission connecting rod be located the both sides of first pivot respectively with the second motion end with second sliding seat swing joint.

The second moving end moves along the transverse direction, the second moving end drives the transmission connecting rod to rotate, and the rotation of the transmission connecting rod drives the second sliding seat to move up and down. Through the transmission connecting rod, the transverse motion of the second motion end is converted into the up-and-down motion of the second sliding seat, the second driving device can be transversely arranged at the side of the first driving device, the structure is reasonable, and the space is more compact.

Preferably, first cutter conveyor includes a rotary driving device, a rotary driving device includes first rotatory stiff end and first rotary motion end, first rotatory stiff end does first cutter stiff end, first rotary motion end does first cutter motion end, the rotation axis of first rotary motion end sets up along upper and lower direction, first rotary motion end fixedly connected with blade disc, the circumference equipartition has a plurality ofly on the blade disc first double-layered sword spare, first sword position of getting is located on the motion route of first double-layered sword spare, first being located of getting sword position the radial outside of blade disc is equipped with the sword position is got to the second. A plurality of first double-layered cutter holders on the blade disc are held with a plurality of cutters, and a rotary motion end of a first rotary driving device drives the blade disc to rotate, and a plurality of cutters pass through first sword position of getting in proper order, realize the removal of cutter position.

Preferably, stretch out the motion and serve and be equipped with second rotary driving device, second rotary driving device includes rotatory stiff end of second and second rotary motion end, the axis of rotation of second rotary motion end sets up along upper and lower direction, second rotary motion is served fixedly connected with connecting plate, be equipped with two on the connecting plate the third presss from both sides sword spare, two the third presss from both sides sword spare and follows the axis of rotation circumference of connecting plate sets up. The second rotary motion end of the second rotary driving device drives the two third tool clamping pieces, and the two third tool clamping pieces clamp the tool to be replaced and the replaced tool respectively, so that the tool changing efficiency is improved.

Preferably, the tool changing structure further comprises a vertical blocking cover, the vertical blocking cover is relatively fixed with the first tool fixing end, two sides of the vertical blocking cover are respectively called as a shielding side and a processing side, the tool magazine assembly is provided with the tool taking mechanism and the extending mechanism are both located in the shielding side, the vertical blocking cover is provided with a communicating hole for communicating the shielding side and the processing side, and the extending movement end can drive the third clamping tool to penetrate through the communicating hole and reciprocate in the shielding side and the processing side.

The workpiece is processed at the processing side, and a communicating hole is formed in the vertical blocking cover for the third cutter clamping piece to pass through; when the tool is changed, the tool extends out to the processing side to be changed with the processing main shaft, and retracts to the shielding side when being processed; the vertical blocking cover can block flying chips generated by machining from flying to the tool magazine assembly, the tool taking mechanism and the extending mechanism, can effectively block the flying chips, and further reduces the influence of the flying chips and splashing liquid on the tool changing structure.

Preferably, the communication hole is connected with a shutter which can open or close the communication hole, and the shutter is connected with an opening and closing mechanism which can drive the shutter. A shutter is arranged on the communicating hole, and the shutter is closed during processing, so that flying chips can be further shielded; the opening and closing mechanism can drive the opening or closing of the stop door.

Preferably, the shutter is rotatably connected to the communication hole, the extending end includes an extending seat capable of pushing the shutter open and penetrating through the communication hole, the third knife holder is disposed on the extending seat, the shutter is connected to an elastic member capable of applying an acting force to close the shutter, and the switch mechanism includes the extending seat and the elastic member.

The extension seat and the third cutter clamping piece penetrate through the communication hole; when the tool is extended for changing, the extending seat touches and pushes the stop door open; after the extension seat retracts, the stop door rotates under the action of the elastic part to recover the closing state. The opening and closing of the stop door are realized by the extension seat and the elastic piece, other driving devices are not needed, and the structure is simple.

Preferably, the movement direction of the protruding seat is inclined to the transverse length direction of the vertical blocking cover. The extension seat is inclined to the vertical blocking cover to extend, so that a third clamping cutter can extend out in the transverse length direction of the vertical blocking cover, and the third clamping cutter is located on the outer side of the stop door, so that the stop door does not influence the tool changing of the machining spindle and the third clamping cutter.

Preferably, one side of the extending seat, which is close to the shutter, is rotatably connected with a push wheel, and the extending seat pushes the shutter through the push wheel. The extension seat is contacted with the stop door through the push wheel, and the push wheel rolls on the stop door in the process of pushing the stop door open, so that the abrasion of the extension seat and the stop door is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural diagram of a knife-taking mechanism of the present invention;

FIG. 4 is a schematic view of the extension mechanism and shield assembly of the present invention during knife removal;

FIG. 5 is a schematic view of the extension mechanism and shield assembly of the present invention shown extended for tool exchange.

In the drawings: 1-tool magazine component, 12-tool disc, 13-first tool clamping piece, 14-first tool taking position, 15-second tool taking position, 16-mounting frame, 2-tool taking mechanism, 21-first driving device, 211-first fixing end, 212-first moving end, 22-second tool clamping piece, 23-second driving device, 231-second fixing end, 232-second moving end, 24-first sliding seat, 25-transmission connecting rod, 251-first rotating shaft, 252-long hole, 26-second sliding seat, 27-opening and closing driving device, 3-extending mechanism, 31-extending driving device, 311-extending fixing end, 312-extending moving end, 32-third tool clamping piece, 33-second rotating driving device, 331-second rotating fixing end, 33-second rotating driving device, 332-a second rotary motion end, 333-a connecting plate, 34-an extending seat, 341-a pushing wheel, 4-a vertical blocking cover, 41-a blocking side, 42-a processing side, 43-a communicating hole, 44-a blocking door, 45-an elastic piece and 00-a cutter.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 5, a tool changing structure includes a mounting frame 16, and a tool magazine assembly 1, a tool taking mechanism 2, and an extending mechanism 3 are disposed on the mounting frame.

Tool magazine subassembly 1 includes first tool conveyor, first tool conveyor includes first tool stiff end and first tool motion end, be equipped with a plurality of first double-layered cutters 13 of arranging in proper order on the first tool motion end, be equipped with the first position of getting 14 on tool magazine subassembly 1, first tool motion end can drive a plurality ofly first double-layered cutters 13 passes through in proper order the first position of getting 14, the first keeping away from of getting 14 the one side of first tool conveyor is equipped with the second and gets 15 positions of getting. The plurality of first tool clamping elements 13 on the first tool moving end can clamp the plurality of tools 00, the first tool moving end can drive the plurality of tools 00 to pass through the first tool taking position 14 in sequence, and the tools 00 to be replaced can be moved to the first tool taking position 14.

Specifically, first cutter conveyor includes a rotary driving device, a rotary driving device includes first rotatory stiff end and first rotary motion end, first rotatory stiff end does first cutter stiff end, first rotary motion end does first cutter motion end, the rotation axis of first rotary motion end sets up along upper and lower direction, first rotary motion end fixedly connected with blade disc 12, the circumference equipartition has a plurality ofly on the blade disc 12 first double-layered sword piece 13, first getting sword position 14 is located on the motion route of first double-layered sword piece 13, first getting sword position 14 be located radial outside of blade disc 12 is equipped with sword position 15 is got to the second. A plurality of first knife clamping pieces 13 on the cutter head 12 clamp a plurality of knives 00, a first rotary motion end of the first rotary driving device drives the cutter head 12 to rotate, the plurality of knives 00 sequentially pass through the first knife taking positions 14, and the corresponding knives 00 are rotated to the first knife taking positions 14 according to processing requirements. The first rotary drive means may employ a motor to drive the cutter head 12 to rotate. The first insert clamping part 13 adopts the existing tool 00 clamping part, and an appropriate clamp clamping part is selected according to the type of the tool 00. In some embodiments, the first tool conveying device may also adopt a tool magazine structure such as a chain tool magazine structure.

Get sword mechanism 2 and include first drive arrangement 21, first drive arrangement 21 includes first stiff end 211 and first motion end 212, first stiff end 211 is fixed on mounting bracket 16, be equipped with second double-layered knife spare 22 on the first motion end 212, first motion end 212 can drive second double-layered knife spare 22 is in first get sword position 14 with the second is got and is moved between sword position 15. The second knife clamping component 22 can clamp the knife 00, and the first moving end 212 of the first driving device 21 drives the second knife clamping component 22 to reciprocate at the first knife fetching position 14 and the second knife fetching position 15. The first driving device 21 can be a cylinder, a screw rod motion module, a rack and pinion motion module, etc., and is used for driving the second knife clamping element 22 to move.

Stretch out mechanism 3 including stretching out drive arrangement 31, stretch out drive arrangement 31 including stretching out stiff end 311 and stretching out motion end 312, stretch out stiff end 311 and fix on mounting bracket 16, it is equipped with third double-layered knife spare 32 on the motion end 312 to stretch out, third double-layered knife spare 32 is located the keeping away from of sword position 15 is got to the second the first one side of getting sword position 14, it can drive to stretch out motion end 312 third double-layered knife spare 32 is along being close to or keeping away from the direction motion of sword position 15 is got to the second. The third tool clamping member 32 can clamp the tool 00; the extension driving device 31 may adopt an air cylinder, a screw rod movement module, a rack and pinion movement module, etc., for driving the third knife clamping member 32 to move.

When the cutter is taken, the second cutter clamping piece 22 can take the cutter 00 needing to be replaced out of the first cutter taking position 14, move the cutter head 12 out, and then move the cutter head to the second cutter taking position 15; the extending end 312 of the extending driving device 31 can drive the third tool clamping element 32 to clamp the tool 00 from the second tool taking position 15, and then extend in the direction away from the cutter head 12, and the peripheral machining spindle can clamp the tool 00 on the third tool clamping element 32 at the position away from the cutter head 12 for tool changing. After the tool changing is finished, the extension moving end 312 drives the third tool clamping element 32 to retract, and then the machining spindle machines the workpiece. This technique sends cutter 00 to the processing main shaft tool changing through extension mechanism 3 to increased the degree of difficulty that flies the bits and fly to the tool changing structure from the machining area, reduced and flown the bits and spattered liquid and fly to the tool changing subassembly on, be favorable to reducing the influence to normal processing.

In some embodiments, the first insert clamping member 13 is a jaw that opens to the outside of the cutter head 12 and clamps the middle of the cutter 00, and the second insert clamping member 22 is a sleeve that clamps the upper portion of the cutter 00 in order to stagger the jaw clamping of the cutter 00. Get sword mechanism 2 and still including locating second drive arrangement 23 on the first motion end 212, second drive arrangement 23 includes second stiff end 231 and second motion end 232, second stiff end 231 connect in on the first motion end 212, second double-layered sword spare 22 is located on the second motion end 232, second motion end 232 can drive second double-layered sword spare 22 moves along upper and lower direction, second double-layered sword spare 22 be located with first getting sword position 14 and corresponding the top of first double-layered sword spare 13. The second cutter clamping piece 22 further comprises an opening and closing driving device 27 used for driving the cutter sleeve to open and close, the opening and closing driving device 27 can be an air cylinder, a piston shaft of the air cylinder drives the second cutter clamping piece 22 to move up and down, the second cutter clamping piece 22 comprises a plurality of openable and closable elastic clamping flaps, an inclined guide surface is arranged on the periphery of the second cutter clamping piece 22, and the guide surface controls the clamping flaps to open and close when the second cutter clamping piece 22 moves up and down. The third knife holder 32 employs a claw.

When the second tool clamping element 22 is located at the first tool picking position 14, the second moving end 232 of the second driving device 23 first drives the second tool clamping element 22 to clamp the tool 00 from the upper side of the tool 00 downwards, then the first moving end 212 drives the second tool clamping element 22 to move towards the second tool picking position 15, after the third tool clamping element 32 clamps the tool 00, the second tool clamping element 22 releases the tool 00, and the second moving end 232 drives the second tool clamping element 22 to move upwards to leave the tool 00, so that the third tool clamping element 32 clamps the tool 00.

In some embodiments, the first moving end 212 is fixedly connected with a first sliding seat 24, the second fixed end 231 is fixed opposite to the first sliding seat 24, the second moving end 232 is movable along the transverse direction, the first sliding seat 24 is rotatably connected with a transmission link 25 capable of rotating up and down, a connection shaft between the transmission link 25 and the first sliding seat 24 is called a first rotating shaft 251, the first sliding seat 24 is slidably connected with a second sliding seat 26 along the up and down direction, the second knife clamping element 22 is disposed on the second sliding seat 26, and two sides of the transmission link 25 located on the first rotating shaft 251 are movably connected with the second moving end 232 and the second sliding seat 26 respectively.

The second moving end 232 moves along the transverse direction, the second moving end 232 drives the transmission link 25 to rotate, and the rotation of the transmission link 25 drives the second sliding seat 26 to move up and down. The transverse movement of the second moving end 232 is converted into the up-and-down movement of the second sliding seat 26 through the transmission connecting rod 25, and the second driving device 23 can be transversely arranged at the side of the first driving device 21, so that the structure is reasonable, and the space is more compact. Preferably, the moving directions of the first moving end 212 and the second moving end 232 are arranged in parallel, and the structure is more compact. The second driving device 23 may employ a cylinder.

In some embodiments, the two sides of the transmission link 25 located on the first rotating shaft 251 are both provided with the long holes 252, the second moving end 232 is provided with the first sliding pin, the second sliding seat 26 is provided with the second sliding pin, and the first sliding pin and the second sliding pin are slidably connected in the two long holes 252 respectively, so that the rotation of the transmission link 25 does not affect the movement of the second moving end 232 and the second sliding seat 26, and the transmission link 25 is movably connected with the second moving end 232 and the second sliding seat 26. In other embodiments, the second moving end 232 and the transmission link 25, and the second sliding seat 26 and the transmission link 25 may also be rotatably connected with an intermediate member, and may also be movably connected.

In some embodiments, the second rotation driving device 33 is disposed on the extending end 312, the second rotation driving device 33 includes a second rotation fixing end 331 and a second rotation end 332, a rotation axis of the second rotation end 332 is disposed along an up-down direction, a connection plate 333 is fixedly connected to the second rotation end 332, two third knife clamping members 32 are disposed on the connection plate 333, and the two third knife clamping members 32 are disposed along a rotation axis of the connection plate 333 in a circumferential direction. The second rotating end 332 of the second rotating driving device 33 drives the two third knife clamping pieces 32, and the two third knife clamping pieces 32 clamp the knife 00 to be replaced and the knife 00 to be replaced respectively, so that the knife changing efficiency is improved. The second rotary drive device 33 may employ a motor. When the third insert holders 32 are used as tool holders, the orientation of the two third insert holders 32 is symmetrically arranged about the center of the rotational axis of the second rotationally movable end 332, so that both third insert holders 32 can hold the tool 00 from the second insert holder 22.

In some specific embodiments, the tool changing structure further includes a vertical blocking cover 4, the vertical blocking cover 4 is relatively fixed to the first rotating fixing end, two sides of the vertical blocking cover 4 are respectively called as a shielding side 41 and a processing side 42, the tool magazine assembly 1, the tool taking mechanism 2 and the extension mechanism 3 are located on the shielding side 41, a communication hole 43 for communicating the shielding side 41 with the processing side 42 is formed in the vertical blocking cover 4, and the extension moving end 312 can drive the third tool clamping piece 32 to pass through the communication hole 43 and reciprocate on the shielding side 41 and the processing side 42. In the present embodiment, the front side of the vertical shield 4 is the processing side 42, and the rear side of the vertical shield 4 is the shielding side 41.

The workpiece is processed on the processing side 42, and the vertical blocking cover 4 is provided with a communication hole 43 for the third cutter clamping piece 32 to pass through; when the tool is changed, the tool extends to the processing side 42 to be changed with the processing main shaft, and retracts to the shielding side 41 when being processed; the vertical blocking cover 4 can block flying chips generated by processing from flying to the tool magazine component 1, the tool taking mechanism 2 and the extending mechanism 3, can effectively block the flying chips, and further reduces the influence of the flying chips and splashed liquid on the tool changing structure.

Further, a shutter 44 capable of opening or closing the communication hole 43 is connected to the communication hole 43, and an opening and closing mechanism capable of driving the shutter 44 is connected to the shutter 44. A shutter 44 is provided in the communication hole 43, and the shutter 44 is closed during processing to further shield the flying chips; the opening and closing mechanism may cause the shutter 44 to open or close. The shutter 44 can rotate relative to the communication hole 43 or slide on the vertical shield 4, both opening and closing the communication hole 43.

Further, the shutter 44 is rotatably connected to the communication hole 43, the extending end 312 includes an extending seat 34 capable of pushing the shutter 44 open and penetrating through the communication hole 43, the third knife holder 32 is disposed on the extending seat 34, an elastic member 45 capable of applying a force for closing the shutter 44 is connected to the shutter 44, and the switch mechanism includes the extending seat 34 and the elastic member 45.

The projecting seat 34 and the third insert holder 32 pass through the communication hole 43; when the tool is extended for changing, the extension seat 34 touches and pushes away the stop door 44; after the extension base 34 is retracted, the shutter 44 is rotated by the elastic member 45 to return to the closed state. The opening and closing of the shutter 44 are realized by the protruding seat 34 and the elastic member 45 without using other driving devices, and the structure is simple. The elastic element 45 can be a tension spring, one end of the tension spring is connected to the shutter 44, and the other end of the tension spring is fixed relatively to the mounting frame 16; the elastic member 45 may also be a torsion spring, and both the tension spring and the torsion spring can apply a door closing force to the door 44.

Further, the moving direction of the protruding base 34 is inclined to the transverse length direction of the vertical blocking cover 4. The extension seat 34 extends obliquely from the vertical shield 4, so that after the third knife clamping piece 32 extends, the third knife clamping piece 32 is positioned on the outer side of the shutter 44 in the transverse length direction of the vertical shield 4, and thus the shutter 44 does not influence the tool changing between the processing spindle and the third knife clamping piece 32. Specifically, in the present embodiment, the rotation axes of the shutter 44 and the communication hole 43 are on the left side of the shutter 44, the extension base 34 extends from the left rear side to the right front side when extending, and the third tool clamping member 32 extends to the right side of the shutter 44, so that the shutter 44 does not affect the movement and tool exchange of the machining spindle.

Further, a pushing wheel 341 is rotatably connected to a side of the protruding seat 34 close to the shutter 44, and the protruding seat 34 pushes the shutter 44 through the pushing wheel 341. The extension seat 34 is in contact with the shutter 44 through the push wheel 341, and the push wheel 341 rolls on the shutter 44 in the process of pushing the shutter 44 open, so that the abrasion of the extension seat 34 and the shutter 44 is reduced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A tool changing structure, comprising:

the tool magazine assembly comprises a first tool conveying device, the first tool conveying device comprises a first tool fixing end and a first tool moving end, a plurality of first tool clamping pieces which are sequentially arranged are arranged on the first tool moving end, a first tool taking position is arranged on the tool magazine assembly, the first tool moving end can drive the first tool clamping pieces to sequentially pass through the first tool taking position, and a second tool taking position is arranged on one side, far away from the first tool conveying device, of the first tool taking position;

the cutter taking mechanism comprises a first driving device, the first driving device comprises a first fixed end and a first moving end, the first fixed end and the first cutter fixed end are relatively fixed, a second cutter clamping piece is arranged on the first moving end, and the first moving end can drive the second cutter clamping piece to move between the first cutter taking position and the second cutter taking position;

stretch out the mechanism, it is including stretching out drive arrangement, stretch out drive arrangement including stretching out the stiff end and stretching out the motion end, stretch out the stiff end with first cutter stiff end relatively fixed, it is equipped with third cutter clamping piece to stretch out the motion to serve, third cutter clamping piece is located the second is got keeping away from of sword position the first one side of getting the sword position, it can drive to stretch out the motion end third cutter clamping piece is along being close to or keeping away from the direction motion that the sword position was got to the second.

2. The tool changing structure of claim 1, wherein the tool removing mechanism further comprises a second driving device disposed on the first moving end, the second driving device comprises a second fixed end and a second moving end, the second fixed end is connected to the first moving end, the second clamping member is disposed on the second moving end, the second moving end can drive the second clamping member to move in an up-and-down direction, and the second clamping member is located above the first clamping member corresponding to the first tool removing position.

3. The tool changing structure of claim 2, wherein the first moving end is fixedly connected with a first sliding seat, the second fixed end is fixed opposite to the first sliding seat, the second moving end can move along the transverse direction, the first sliding seat is rotatably connected with a transmission connecting rod capable of rotating up and down, a connecting shaft of the transmission connecting rod and the first sliding seat is called a first rotating shaft, the first sliding seat is slidably connected with a second sliding seat along the up and down direction, the second tool clamping member is arranged on the second sliding seat, and two sides of the transmission connecting rod, which are located on the first rotating shaft, are respectively and movably connected with the second moving end and the second sliding seat.

4. The tool changing structure of claim 1, wherein the first tool conveying device comprises a first rotary driving device, the first rotary driving device comprises a first rotary fixing end and a first rotary moving end, the first rotary fixing end is the first tool fixing end, the first rotary moving end is the first tool moving end, a rotation axis of the first rotary moving end is arranged along an up-down direction, a tool disc is fixedly connected to the first rotary moving end, a plurality of first tool clamping pieces are evenly distributed on the tool disc in the circumferential direction, the first tool taking position is located on a movement path of the first tool clamping pieces, and the second tool taking position is arranged on the radial outer side of the tool disc where the first tool taking position is located.

5. The tool changing structure of claim 1, wherein a second rotary driving device is provided on the end of the extension movement, the second rotary driving device comprises a second rotary fixing end and a second rotary movement end, the rotation axis of the second rotary movement end is arranged along the up-down direction, a connecting plate is fixedly connected to the second rotary movement end, two third tool clamping members are provided on the connecting plate, and the two third tool clamping members are arranged along the circumferential direction of the rotation axis of the connecting plate.

6. The tool changing structure of claim 1, further comprising a vertical shield, wherein the vertical shield is fixed relative to the first tool fixing end, two sides of the vertical shield are respectively called a shielding side and a processing side, the tool magazine assembly, the tool picking mechanism and the extension mechanism are located on the shielding side, a communication hole for communicating the shielding side with the processing side is formed in the vertical shield, and the extension end can drive the third tool clamping member to pass through the communication hole and reciprocate on the shielding side and the processing side.

7. The tool changing structure according to claim 6, wherein a shutter which can open or close the communication hole is connected to the communication hole, and an opening and closing mechanism which can drive the shutter is connected to the shutter.

8. The tool changing structure of claim 7, wherein the shutter is rotatably connected to the communication hole, the extension moving end includes an extension seat that pushes the shutter open and passes through the communication hole, the third tool clamping member is provided on the extension seat, an elastic member that applies a force to close the shutter is connected to the shutter, and the opening and closing mechanism includes the extension seat and the elastic member.

9. The tool changing structure of claim 8 wherein the direction of movement of the projecting seat is inclined to the transverse length of the upstanding shield.

10. The tool changing structure of claim 8, wherein a push wheel is rotatably connected to a side of the extension base adjacent to the shutter, and the extension base pushes the shutter open by the push wheel.

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