CN113134863B

CN113134863B - High-speed intelligent cutting machining center and method for replacing cutter template

Info

Publication number: CN113134863B
Application number: CN202110566589.1A
Authority: CN
Inventors: 童惠忠; 王文寅; 王卸斌; 童俊翔; 童孝忠
Original assignee: Quzhou Taiwei Machinery Industry Co ltd
Current assignee: Quzhou Taiwei Machinery Industry Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2024-02-27
Anticipated expiration: 2041-05-24
Also published as: EP4201614A1; EP4201614A4; WO2022247237A1; CN113134863A

Abstract

The invention relates to a high-speed intelligent cutting machining center, which comprises a cutting machine, a cutting die library and a cutting die plate turnover table, wherein the cutting machine comprises a machine base, an operation table and a cross beam, wherein the operation table and the cross beam are arranged on the machine base; the cutter mold warehouse comprises a frame, a cutter mold plate storage rack and a lifting device, wherein the cutter mold plate storage rack and the lifting device are arranged in the frame, a plurality of cutter mold plates are stacked in the cutter mold plate storage rack up and down in a layered mode, guide posts are respectively arranged at four corners of the frame, guide sleeves which are in sliding fit with the guide posts are arranged on the cutter mold plate storage rack, and the lifting device drives the cutter mold plate storage rack to move up and down along the guide posts. The invention also discloses a method for replacing the knife template on the machining center. The invention can quickly replace the knife template, and has good position repeatability and high positioning precision.

Description

High-speed intelligent cutting machining center and method for replacing cutter template

Technical Field

The invention belongs to the technical field of intelligent cutting equipment, and particularly relates to a high-speed intelligent cutting machining center and a method for replacing a cutter template.

Background

The cutting machine needs to frequently replace a cutting knife die according to a cutting style, and the cutting knife die is generally arranged on a knife die plate. The existing cutting machine mostly adopts manual replacement of the cutter template, so that the replacement time is long, the efficiency is low, the position repeatability of the cutter template after replacement is poor, and the size precision of a cut product is low. The existing rack and pinion mechanism that adopts changes the knife template, although improved work efficiency, reduced working strength, this knife template mechanism has several defects: 1. the cutter changing template mechanism is arranged on the side surface of the cutting machine, the occupied area is large, the transverse moving distance is long, and the structure is unstable; 2. before the tool changing template mechanism changes the tool dies, the working panel needs to rotate 90 degrees, the tool dies need to be changed into a transverse direction to change the tools, the structure is complex, and faults are easy to occur; 3. the gear rack mechanism has loud noise during operation, complex structure and troublesome maintenance; 4. after the cutter template is replaced, displacement occurs in the moving or rotating process, so that the machining station is inaccurate, and the product quality is unstable; 5. the operation speed is low, and the time for replacing the knife template is long.

Disclosure of Invention

The invention aims to solve the technical problems of providing a high-speed intelligent cutting machining center and a method for replacing a cutter template, wherein the speed for replacing the cutter template is high, a mechanism for replacing the cutter template operates stably, the time for replacing the cutter template is shortened, the use efficiency of a cutting machine is obviously improved, the position repeatability and the positioning accuracy of the cutter template are also improved, the dimensional accuracy of a cut product is improved, the requirement of a user is met, and the dimensional stability of the cut product is good.

The invention is realized in this way, the invention provides a high-speed intelligent cutting machining center, which comprises a cutting machine, a cutting die library and a cutting die plate turnover table, wherein the cutting machine comprises a machine base, a working table and a cross beam which are arranged on the machine base, a punch sliding rail is arranged on the cross beam, a matched punch sliding seat is arranged on the punch sliding rail, a cutting die fixing plate is arranged below the punch sliding seat, a rotary cutting head is arranged on the cutting die fixing plate, a cutting die plate and a cutting die plate clamping limiting device for cutting are arranged at the bottom of the rotary cutting head, the cutting die plate turnover table is positioned at the left side of the working table, one end of the cutting die plate turnover table is connected with the cutting die library, and the other end of the cutting die plate turnover table is connected with the working table; the cutter mold warehouse comprises a frame, a cutter mold storage rack and a lifting device, wherein the cutter mold storage rack and the lifting device are arranged in the frame, a plurality of cutter mold plates are stacked in the cutter mold storage rack up and down in a layered manner, guide posts are respectively arranged at four corners of the frame, guide sleeves which are in sliding fit with the guide posts are arranged on the cutter mold storage rack, and the lifting device drives the cutter mold storage rack to move up and down along the guide posts; the lifting device comprises a motor gear box provided with double output shafts, a driving belt wheel, a driven shaft, driven bearings, driven belt wheels and a synchronous belt, wherein the motor gear box is arranged at the top of a frame, two driving belt wheels are respectively arranged at two ends of the output shafts, two driven shafts are fixedly arranged at the lower part of the frame and positioned below a knife template storage rack, the driven shafts are arranged in the two driven bearings in a penetrating mode, the driven belt wheels are arranged at two ends of the driven shafts, the driving belt wheels drive the driven belt wheels to rotate through the synchronous belt, the synchronous belts are respectively arranged at the left side and the right side of the frame, knife rest fixing plates are respectively arranged on each synchronous belt, one ends of the knife rest fixing plates are fixed on the synchronous belts, and the other ends of the knife rest fixing plates are fixed on the knife template storage rack at the side.

Further, a plurality of slide ways for placing the knife templates are respectively arranged on the left side and the right side of the knife template storage rack up and down, a knife template locking device for positioning the knife templates in the slide ways is arranged on the right side of the knife template storage rack, the knife template locking device comprises a locking cylinder, a locking operation rod, a locking bearing, a driving rod, a locking rod rotating shaft and a rotating shaft fixing rod, the locking cylinder is fixed on the upper part of the knife template storage rack, the locking operation rod is fixedly connected with an output shaft of the locking cylinder, the locking operation rod is arranged on two locking bearings in a penetrating mode, the two locking bearings are fixed on the knife template storage rack and are respectively positioned at two ends of the locking operation rod, the locking operation rod slides up and down along the locking bearings under the driving of the locking cylinder, the rotating shaft fixing rod is fixed on the side surface of the knife template storage rack, a plurality of dodging holes corresponding to the knife template storage positions of each layer are formed in the rotating shaft fixing rod, the driving rod, the locking rod and the rotating shaft are respectively arranged on the side of each layer of knife template storage position in a complete mode, a kidney-shaped hole, the locking rod and the rotating shaft are respectively arranged on the locking rod and the rotating shaft fixing rod pass through the rotating shaft and the rotating shaft fixing rod through the rotating shaft fixing rod and the rotating shaft fixing rod in the arc-shaped holes, and the rotating shaft fixing rod passes through the arc-shaped holes and the arc-shaped holes.

Further, a contact block is arranged on the locking operation rod, an upper travel switch and a lower travel switch which are matched with the contact block are respectively arranged on the frame, and a stop switch triggered by the knife template storage rack is arranged on the frame.

Further, the cutting die turnover table comprises two raceway plates, a cylinder mounting plate, a first-stage propelling cylinder, a propelling slide rail, a propelling block, two lifting cylinders, a cylinder connecting plate, a second-stage propelling cylinder and a hook plate with a pull hook, one ends of the two raceway plates are connected with the cutting die library, the other ends of the two raceway plates are connected with the operation table, the two raceway plates are separated left and right to form a channel for the cutting die to enter and exit the cutting die library, the cylinder mounting plate is fixed on the operation table surface, the first-stage propelling cylinder and the propelling slide rail are fixed on the cylinder mounting plate, the two lifting cylinders are respectively fixed on the left side and the right side of the propelling block, the cylinder connecting plate is respectively connected with cylinder rods of the two lifting cylinders, the second-stage propelling cylinder is fixed on the cylinder connecting plate, the hook plate is arranged on a cylinder rod of the second-stage propelling cylinder, and the first-stage propelling cylinder drives the two lifting cylinders, the cylinder connecting plate, the second-stage propelling cylinder and the hook plate to reciprocate along the propelling slide rail.

Further, the clamping limiting device comprises a clamping assembly and a limiting assembly, the clamping assembly is arranged on a cutter die fixing plate of the cutting machine, the clamping assembly comprises a left pressing die plate, a right pressing die plate and a pressing cylinder, two pressing cylinders are respectively arranged on the left side and the right side of the cutter die fixing plate, the two pressing cylinders simultaneously act to press or loosen the cutter die plate, the left pressing die plate and the right pressing die plate are respectively arranged on the left side and the right side of the lower surface of the cutter die fixing plate, the pressing cylinders are arranged in the cutter die fixing plate, the pressing cylinders respectively drive the left pressing die plate and the right pressing die plate to press the cutter die plate on the lower surface of the cutter die fixing plate, the limiting assembly comprises a front limiting part and a rear limiting part which are arranged on the front side and the rear side of the cutter die fixing plate, at least one of the front limiting part and the rear limiting part is a movable limiting part, the other is a fixed limiting part or a movable limiting part, and the movable limiting part is linked with the left pressing die plate or the right pressing die plate to limit the front side and the rear side of the cutter die plate.

Further, compress tightly the cylinder including setting up the cylinder hole in the cutting die fixed plate and setting up the valve spindle in the cylinder hole, go up the piston, lower piston, go up air chamber and lower air chamber, go up piston and lower piston and set up respectively at the valve spindle, go up the air chamber setting and go up between piston and the roof in cylinder hole, lower air chamber setting is gone up between piston and the lower piston, sets up respectively on the cutting die fixed plate and goes up air pipe interface and lower air pipe interface, goes up air pipe interface and lower air pipe interface and is linked together with last air chamber and lower air chamber through last passageway and the lower passageway that sets up on the cutting die fixed plate go up the stop washer on the inner wall in cylinder hole, the motion position of piston under the stop washer restriction.

Further, the movable limiting component comprises a first connecting rod, a second connecting rod, a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein the first rotating shaft is fixed on the cutter die fixing plate, the third rotating shaft is fixed on the left die plate or the right die plate, the first rotating shaft is movably arranged in the middle of the first connecting rod, the second rotating shaft is used for movably connecting one end of the first connecting rod with one end of the second connecting rod respectively, the blocking part is arranged at the other end of the first connecting rod to limit the cutter die plate, and the other end of the second connecting rod is movably connected with the third rotating shaft.

Further, the fixed limiting part comprises a limiting block and a fastening bolt, the limiting block limits the moving position of the cutter die plate, and the fastening bolt fixes the limiting block on the side surface of the cutter die fixing plate.

Further, limit screws are respectively arranged between the left die plate and the right die plate and between the right die plate and the cutting die fixing plate, and the limiting screw rod respectively limits the maximum distance between the left die plate and the right die plate and the cutting die fixing plate.

The present invention is thus achieved, providing a method of replacing a knife template for use in a high-speed intelligent cutting machining center as described above, the method comprising the steps of:

the method comprises the steps that firstly, a rotary cutting head is moved to the position right above a peripheral table of a cutter template from a working area located in the middle of an operation table, a movable limiting part of a clamping limiting device is located close to a cutter template library, the cutter template is driven to descend to a cutter changing template position by the rotary cutting head, a left pressing template and a right pressing template are respectively driven to move downwards by a pressing cylinder, the movable limiting part is in an unlocking state through linkage, a clamping assembly is in a loosening state, and an old cutter template waits to be replaced;

step two, a first-stage pushing cylinder drives a second-stage pushing cylinder and a claw plate to move from an initial position to the direction of a rotary cutting head, and meanwhile, the second-stage pushing cylinder also drives the claw plate to move to the direction of the rotary cutting head until the claw plate is positioned below an old knife template to be replaced, and two lifting cylinders simultaneously drive the second-stage pushing cylinder and the claw plate to move upwards through a cylinder connecting plate until a pulling hook of the claw plate is inserted into a hook hole of the old knife template upwards;

step three, immediately, the second-stage propelling cylinder and the first-stage propelling cylinder simultaneously move towards the direction of the cutting die warehouse, the old cutting die plate is pulled out of the clamping limiting device in the loosening state in the step one and moves to a set position in the cutting die warehouse, then the two lifting cylinders drive the claw plate to move downwards, and after the second-stage propelling cylinder retreats, the claw plate leaves the cutting die warehouse;

step four, after the lifting device in the cutter die library acts to lift the new cutter die plate to be replaced to a proper position, the second stage propulsion cylinder moves to the position of the cutter die library again, and the two lifting cylinders lift the claw plate again until the pull hook of the claw plate is inserted into the hook hole of the new cutter die plate upwards;

step five, the first-stage pushing cylinder drives the second-stage pushing cylinder and the claw plate to move towards the direction of the rotary cutting head, meanwhile, the second-stage pushing cylinder also drives the claw plate to move towards the direction of the rotary cutting head until the claw plate moves the new knife template into the clamping limiting device which is in a loosening state, the new knife template is blocked by the fixed limiting component at the other side, the clamping component moves reversely again to clamp the new knife template, the compressing cylinder drives the left pressing template and the right pressing template to move upwards respectively, the movable limiting component is in a limiting state through linkage, the new knife template is clamped and limited, then the two lifting cylinders drive the claw plate to move downwards, the first-stage pushing cylinder and the second-stage pushing cylinder back to the initial position, and the rotary cutting head is lifted back to the working area in the middle of the operation table, so that the action cycle of the knife changing template is completed.

Compared with the prior art, the high-speed intelligent cutting machining center and the method for replacing the cutter template have the following characteristics:

1. the cutter template can be automatically and quickly replaced, the time for replacing the cutter template is shortened, and the working efficiency is improved;

2. the cutter die library is arranged at one end of the cutting machine, when the cutter die plate is replaced, the moving distance of the cutter die plate is short, the positioning is more accurate, the structure is scientific and reasonable, and the replacement efficiency is high;

3. the equipment runs stably and has low failure rate.

Drawings

FIG. 1 is a schematic perspective view of a high-speed intelligent cutting machining center according to a preferred embodiment of the invention;

FIG. 2 is a schematic perspective view of the other angle of FIG. 1;

FIG. 3 is an enlarged schematic view of the portion M of FIG. 1;

FIG. 4 is a front view of the die magazine of FIG. 1;

FIG. 5 is a schematic perspective view of FIG. 4;

FIG. 6 is a schematic perspective view of the other angle of FIG. 5;

FIG. 7 is an enlarged schematic view of portion P of FIG. 5;

FIG. 8 is a schematic perspective view of the knife mold plate of FIG. 5;

FIG. 9 is a schematic perspective view of the locking lever of FIG. 5;

FIG. 10 is a perspective view of the rotary cutter head of the present invention of FIG. 1;

FIG. 11 is a perspective view of the assembled state of the die plate and the die plate clamping and limiting device in FIG. 10;

FIG. 12 is a schematic perspective view at another angle from FIG. 11, showing an N-N section;

fig. 13 is a perspective view of the first link of fig. 11.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1, 2 and 3, a preferred embodiment of a high-speed intelligent cutting machining center of the present invention includes a cutting machine 1, a die magazine 2 and a die plate turnover table 3.

The cutting machine 1 comprises a machine base, a working table 4 and a cross beam 5 arranged on the machine base. The cross beam 5 is located above the table 4. The front side and the rear side of the cross beam 5 are respectively provided with a punch sliding rail 6, two punch sliding rails 6 are provided with matched punch sliding seats 7, a rotary cutting head 8 is arranged below the punch sliding seats 7, a cutter die fixing plate 10 is arranged at the bottom of the rotary cutting head 8, and a cutter die plate A and a cutter die plate clamping limiting device 9 for cutting are arranged on the cutter die fixing plate 10. The clamping and limiting device 9 is used for limiting and clamping the guided-in cutter template A or unlocking and loosening the cutter template which is prepared to be guided out.

The die plate turnover table 3 is positioned on the left side of the work table 4, one end of the die plate turnover table is connected with the die plate warehouse 2, and the other end of the die plate turnover table is connected with the work table 4. The rotary cutting head 8 can be moved over the die transfer table 3. The cutting die turnover table 3 is used for pulling out the cutting die plate A from the cutting die warehouse 2 and loading the cutting die plate A into the clamping limiting device 9 of the rotary cutting head 8, and is also used for pulling out the cutting die plate A in the clamping limiting device 9 of the rotary cutting head 8 and returning the cutting die plate A into the cutting die warehouse 2.

Referring to fig. 4 to 9, the die magazine 2 includes a frame 21, and a die plate storage rack 22 and a lifting device 23 thereof disposed in the frame 21. The front and rear side surfaces of the frame 21 are provided with an access portion 24 for allowing the blade form a to enter and exit the blade form storage rack 22. The access portion 4 on the front side is used for connecting with the cutting machine 1 to provide the cutting machine 1 with a required blade template a. The access portion 4 located at the rear side is used for replacing and sequentially disposing the blade templates a in the frame 21. The plurality of knife templates A are stacked up and down in layers in the knife template storage rack 22, guide posts 25 are respectively arranged at four corners of the frame 21, and guide sleeves 26 which are in sliding fit with the guide posts 25 are arranged on the knife template storage rack 22. The lifting device 23 drives the knife template storage rack 22 to move up and down along the guide post 25.

The lifting device 23 includes a motor gear box 231 provided with a double output shaft, a driving pulley 232, a driven shaft 233, a driven bearing 234, a driven pulley 235, and a timing belt 236. The motor gear box 231 is arranged at the top of the frame 21, two driving pulleys 232 are respectively arranged at two ends of the output shaft, two driven bearings 234 are fixed at the lower part of the frame 21 and are positioned below the cutting die storage rack 22, the driven shaft 233 is arranged in the two driven bearings 234 in a penetrating way, and driven pulleys 235 are arranged at two ends of the driven shaft 233. The driving pulley 232 drives the driven pulley 235 to rotate through the synchronous belt 236. Synchronous belts 236 are provided on both left and right sides of the frame 21, respectively. A holder fixing plate 237 is provided on each timing belt 236. The blade holder fixing plate 237 is fixed to the timing belt 236 at one end and to the blade die storage rack 22 at the other end. The two synchronous belts 236 drive the cutter mould storage rack 22 to move up and down along the guide post 25 through the cutter frame fixing plates 237 on the synchronous belts. The use of the timing belt technology not only simplifies the structure of the lifting device 3, but also improves the position repeatability of the up-and-down operation of the blade template storage rack 22 and improves the operation stability.

A plurality of slide ways 27 for placing the knife mold a are respectively arranged at the left side and the right side of the knife mold storage frame 22 up and down, and a knife mold locking device 28 for positioning the knife mold a in the slide ways 27 is arranged at the right side of the knife mold storage frame 22.

The blade form locking device 28 includes a locking cylinder 281, a locking lever 282, a locking bearing 283, a driving lever 284, a lock lever 285, a lock lever shaft 286, and a shaft fixing lever 287. The locking cylinder 281, the locking bearing 283 and the rotation shaft fixing rod 287 are respectively fixed to the die storage rack 22.

The lock cylinder 281 is fixed to the upper portion of the die storage rack 22, and the lock lever 282 is fixedly connected to an output shaft of the lock cylinder 281. The locking lever 282 is inserted through two locking bearings 283, and the two locking bearings 283 are fixed to the die storage rack 22 and are located at both ends of the locking lever 282, respectively, so that the locking lever 282 slides up and down along the locking bearings 283 under the driving of the locking cylinder 281. The rotation shaft fixing rod 287 is fixed to a side surface of the die storage rack 22, and a plurality of avoiding holes 2871 corresponding to the placement positions of the die plates a of each layer are provided in the rotation shaft fixing rod 287.

The driving lever 284, the lock lever 285, and the lock lever shaft 286 are provided in sets at the sides of the place where each layer of the blade form a is placed, respectively. As shown in fig. 9, a kidney-shaped hole 2851, a shaft hole 2852, and an arc-shaped portion 2853 are provided on the lock lever 285, respectively, the kidney-shaped hole 2851 and the arc-shaped portion 2853 being located on both sides of the shaft hole 2852, respectively. The lock lever rotation shaft 286 movably connects the lock lever 285 in the lock lever escape hole 2871 through the rotation shaft fixing rod 287 and the rotation shaft hole 2852 of the lock lever 285, and the lock lever 285 rotates around the lock lever rotation shaft 286. One end of the driving rod 284 is fixed on the lock rod 285, and the other end is movably inserted into the kidney-shaped hole 2851 of the lock rod 285. The arc-shaped portion 2853 of the lock lever 285 is clamped in a limit clamping groove B provided at the side of the knife template a, as shown in fig. 8.

The locking operation rod 282 slides up and down and drives the lock rod 285 to rotate around the lock rod rotating shaft 286 through the driving rod 284, so that the arc-shaped part 2853 of the lock rod 285 is clamped into the limit clamping groove B of the knife template A to lock the knife template A, or the arc-shaped part 2853 of the lock rod 285 is released from the limit clamping groove B of the knife template A to unlock the knife template A.

The lock lever 282 is provided with a contact block 288, the frame 21 is provided with an upper travel switch 210 and a lower travel switch 211 which are matched with the contact block 288, and the contact block 288 triggers the upper travel switch 210 and the lower travel switch 211 respectively when moving up and down along with the lock lever 282 so as to limit the up and down positions of the lock lever 282, thereby improving the operation safety of the knife template locking device 28.

The adoption of the locking cylinder 281 as power shortens the response time of the cutter template locking device 28 and improves the working efficiency of the cutter template supply system.

A roller 29 is provided on a side wall of each of the slides 27. The roller 29 is located above the die plate a and near the access portion 24 on the rear side of the frame 21, and plays a role in limiting and guiding during the process of storing or guiding the die plate a into or out of the die storage rack 22. A knife rest support post 212 is provided at the bottom of the knife mold storage rack 22, and the knife rest support post 212 is fixed on the frame 21. A tool rest stop post 213 is provided on top of the frame 21. In this embodiment, four knife rest support posts 212 are respectively disposed at four corners of the bottom of the knife mold storage rack 22, and four knife rest limit posts 213 are respectively disposed at four corners of the top of the frame 21, so as to improve the safety and stability of the knife mold storage rack 22.

The frame 21 is provided with a stop switch 214 triggered by the cutter mold storage rack 22, and the stop switch 214 limits the descending position of the cutter mold storage rack 22, so that the safety and stability of the movement of the cutter mold storage rack 22 are improved.

Referring to fig. 1 and 3, the turning table 3 includes two race plates 31, a cylinder mounting plate 32, a first stage pushing cylinder 33, a pushing slide rail 34, a pushing block 35, two lifting cylinders 36, a cylinder connecting plate 37, a second stage pushing cylinder 38, and a claw plate 39 with a hook 310. One end of each of the two raceway plates 31 is connected with the cutter die library 2, the other end of each raceway plate 31 is connected with the operation table 4, and the two raceway plates 31 are separated left and right to form a channel for the cutter die plate A to enter and exit the cutter die library 2. The cylinder mounting plate 32 is fixed on the surface of the working table 4, and the first stage propulsion cylinder 33 and the propulsion slide rail 34 are fixed on the cylinder mounting plate 32. The first stage propulsion cylinder 33 adopts a rodless cylinder, and drives the propulsion block 35 to reciprocate along the propulsion slide rail 34.

The two-stage propulsion cylinder of the first-stage propulsion cylinder 33 and the second-stage propulsion cylinder 38 is arranged, so that the length of the first-stage propulsion cylinder 33 can be shortened, the overlong length of the first-stage propulsion cylinder 33 is avoided, the cost is saved, the stability of the movement of the propulsion block 35 is improved, in addition, the two-stage cylinders can simultaneously propel or retract in the propulsion or retraction process, the propulsion or retraction time is shortened, the rapid movement of the propulsion block 35 is realized, the rapid and stable replacement of the blade template A is realized, and the operation efficiency is improved. Providing the push rail 34 increases the stability of the push block 35 during rapid pushing or retraction.

Two lifting cylinders 36 are respectively fixed on the left and right sides of the pushing block 35, and cylinder connecting plates 37 are respectively connected with cylinder rods of the two lifting cylinders 36. The second stage propulsion cylinder 38 is fixed to the cylinder connecting plate 37, and the claw plate 39 is provided on the cylinder rod of the second stage propulsion cylinder 38. The first stage pushing cylinder 33 drives the two lifting cylinders 36, the cylinder connecting plate 37, the second stage pushing cylinder 38 and the claw plate 39 to reciprocate along the pushing slide rail 34 through the pushing block 35. The hooks 310 of the hook claw plate 39 are inserted into the hook holes C provided on the blade form a, as shown in fig. 8, to push the blade form a into the released clamping stopper 9 or to pull the blade form a out of the released clamping stopper 9.

Referring to fig. 10 to 13, the clamping and limiting device 9 includes a clamping assembly 91 and a limiting assembly, which are mounted on a die fixing plate 10 at the bottom of the cutting machine 1. The clamping assembly 91 includes a left die plate 94, a right die plate 95, and a hold down cylinder 96. The left and right die plates 94 and 95 are respectively disposed at left and right sides of the lower surface of the die fixing plate 10, and the pressing cylinder 96 is disposed in the die fixing plate 10 and symmetrically disposed at left and right and front and rear corners of the die fixing plate 10. The pressing cylinders 96 respectively drive the left and right pressing plates 94 and 95 to press the die plate a against the lower surface of the die fixing plate 10.

The limiting assembly comprises a front limiting part and a rear limiting part which are arranged on the front side surface and the rear side surface of the cutting die fixing plate 10, wherein at least one of the front limiting part and the rear limiting part is a movable limiting part 97, and the other is a fixed limiting part or a movable limiting part 97. The movable limiting component 97 is linked with the left pressing die plate 94 or the right pressing die plate 95 to limit or unlock the front side surface and the rear side surface of the tool setting die plate A. In fig. 10, 11 and 12, movable stopper members 97 are provided on both front and rear side surfaces of the die fixing plate 3, respectively.

When the cutter template A is in a clamping state, the left die plate 94 and the right die plate 95 respectively press the cutter template A on the lower surface of the cutter template fixing plate 10 in the up-down direction under the action of the pressing cylinder 96, and at the moment, the limiting assembly simultaneously limits the front side surface and the rear side surface of the cutter template A, so that the repeatability and the positioning precision of the position of the cutter template A are improved, and the dimensional precision of a cut product is improved.

The action process of the limiting component is as follows: when the left and right die plates 94 and 95 of the clamping assembly 91 press the die plate a against the lower surface of the die fixing plate 10, the movable limiting member 97 also limits the front side or/and the rear side of the die plate a. Conversely, when the left die plate 94 and the right die plate 95 of the clamp assembly 91 release the vertical compression of the setting die plate a, the movable stopper 97 releases the restriction in the front or/and rear direction of the setting die plate a accordingly.

Two pressing cylinders 96 are respectively arranged on the left side and the right side of the cutting die fixing plate 10, and the two pressing cylinders 96 act simultaneously to press or loosen the cutting die plate A.

The pressing cylinder 96 includes a cylindrical hole 961 provided in the die fixing plate 10, a spool shaft 962 provided in the cylindrical hole 961, an upper piston 963, a lower piston 964, an upper air chamber 965, and a lower air chamber 966. An upper piston 963 and a lower piston 964 are respectively disposed on the spool shaft 962, an upper air chamber 965 is disposed between the upper piston 963 and a top wall of the cylindrical bore 961, and a lower air chamber 966 is disposed between the upper piston 963 and the lower piston 964. An upper air pipe interface 98 and a lower air pipe interface 99 are respectively provided on the die fixing plate 10. The upper air pipe interface 98 and the lower air pipe interface 99 communicate with the upper air chamber 965 and the lower air chamber 966 through an upper channel 967 and a lower channel 968, respectively, provided on the die fixing plate 10.

The compression cylinder 96 is directly arranged in the cutter die fixing plate 10, so that the structure of the cutter die plate clamping limiting device is simplified, the weight of the cutter die fixing plate 10 is reduced, and the stability of the cutter die plate is improved.

The action process of the compressing cylinder 96 is as follows: when the upper air chamber 965 is filled with high-pressure air through the upper air pipe interface 98, the lower air chamber 966 recovers air through the lower air pipe interface 99, the valve core shaft 962 is driven to move downwards together with the upper piston 963 and the lower piston 964 on the valve core shaft 962, and the valve core shaft 962 pushes the left die plate 94 or the right die plate 95 open to unlock the tool die plate A. After the lower air chamber 966 is filled with high-pressure air through the lower air pipe interface 99 and the upper air chamber 965 is used for recycling air through the upper air pipe interface 98, the valve core shaft 962 is driven to move upwards together with the upper piston 963 and the lower piston 964, and the valve core shaft 962 drives the left die plate 94 or the right die plate 95 to press the die plate A.

A stopper washer 969 is provided on an inner wall of the cylindrical hole 961, and the stopper washer 969 restricts a movement position of the lower piston 964, thereby restricting a movement position of the spool 962, so that a telescopic height of the pressing cylinder 96 is restricted.

The fixed limiting part comprises a limiting block and a fastening bolt (not shown in the figure). The stopper restricts the moving position of the die plate a, and the fastening bolt fixes the stopper on the side surface of the die fixing plate 10.

The movable limiting component 97 comprises a first connecting rod 971, a second connecting rod 972, a first rotating shaft 973, a second rotating shaft 974 and a third rotating shaft 975, wherein the first rotating shaft 973 is fixed on the cutting die fixing plate 10, the third rotating shaft 975 is fixed on the left die plate 94 or the right die plate 95, the first rotating shaft 973 is movably arranged in the middle of the first connecting rod 971, one ends of the first connecting rod 971 and the second connecting rod 972 are respectively and movably connected together by the second rotating shaft 974, a blocking part 976 is arranged at the other end of the first connecting rod 971 to limit the cutting die plate A, and the other end of the second connecting rod 972 is movably connected with the third rotating shaft 975.

Referring to fig. 13, a section of inclined surface or arc surface 977 is provided on the blocking portion 976 of the first link 971, so that the knife module a is conveniently pushed back to the correct limit position during the limit process of the knife module a by the first link 971.

The action process of the movable limiting component 97 is as follows: when the pressing cylinder 96 drives the left die plate 94 or the right die plate 95 to move downward, the third rotating shaft 975 and the second connecting rod 972 move downward along with the same, the second connecting rod 972 pulls one end of the first connecting rod 971 to move downward through the second rotating shaft 974, the first connecting rod 971 rotates around the first rotating shaft 973, the other end of the first connecting rod 971 is lifted, and the knife die plate A limited by the second connecting rod 971 is released. Conversely, when the pressing cylinder 96 drives the left die plate 94 or the right die plate 95 to move upward, the third rotating shaft 975 and the second connecting rod 972 move upward along with the upward movement, the second connecting rod 972 pulls one end of the first connecting rod 971 through the second rotating shaft 974, the first connecting rod 971 rotates around the first rotating shaft 973, and the other end of the first connecting rod 971 is lowered to limit the knife die plate a.

Limit screws 92 are respectively provided between the left and right die plates 94 and 95 and the die fixing plate 10. The limit screws 92 respectively adjust and limit the maximum distance between the left and right die plates 94 and 95 and the die fixing plate 10.

The clamping limiting device 9 can be used for rapidly limiting and clamping the knife template A, so that the knife template A can be rapidly replaced, and the positioning accuracy is high.

A side cover 93 is further arranged on the cutting die fixing plate 10, and the side cover 93 covers an upper air pipe interface 98 and a lower air pipe interface 99.

The invention also discloses a method for replacing the cutter template, which is used in the high-speed intelligent cutting machining center, and comprises the following steps:

step one, moving the rotary cutting head 8 from a working area positioned in the middle of the workbench 4 to the position right above the rotary table 3 of the knife template, wherein the position of a movable limiting part 97 of the clamping limiting device 9 is close to the knife template warehouse 2, the rotary cutting head 8 drives the knife template A to descend to the knife template changing position, the compression cylinder 96 drives the left die plate 94 and the right die plate 95 to move downwards respectively, the movable limiting part 97 is in an unlocking state through linkage, the clamping assembly 91 is in a loosening state, and the old knife template A1 waits for replacement.

Step two, the first stage pushing cylinder 33 drives the second stage pushing cylinder 38 and the claw plate 39 to move from the initial position to the direction where the rotary cutting head 8 is located, meanwhile, the second stage pushing cylinder 38 also drives the claw plate 39 to move to the direction where the rotary cutting head 8 is located until the claw plate 39 is located below the old knife template A1 to be replaced, and the two lifting cylinders 36 simultaneously drive the second stage pushing cylinder 38 and the claw plate 39 to move upwards through the cylinder connecting plate 37 until the pull hooks 310 of the claw plate 39 are inserted into the hook holes C of the old knife template A1 upwards.

Step three, immediately, the second stage pushing cylinder 38 and the first stage pushing cylinder 33 move towards the direction of the cutter die warehouse 2 at the same time, the old cutter die plate A is pulled out from the clamping limiting device 9 which is in the loosening state in the step one and moves to a set position in the cutter die warehouse 2, then the two lifting cylinders 36 drive the claw plate 39 to move downwards, and then the second stage pushing cylinder 38 is retracted, and the claw plate 39 is separated from the cutter die warehouse 2.

And step four, after the lifting device 23 in the cutter die library 2 acts to lift the new cutter die plate A2 to be replaced to a proper position, the second stage pushing cylinder 38 moves to the position of the cutter die library 2 again, and the two lifting cylinders 36 lift the hook plate 39 again until the pull hooks 310 of the hook plate 39 are inserted into the hook holes C of the new cutter die plate A2 upwards.

Step five, the first stage pushing cylinder 33 drives the second stage pushing cylinder 38 and the claw plate 39 to move towards the direction of the rotary cutting head 8, meanwhile, the second stage pushing cylinder 38 also drives the claw plate 39 to move towards the direction of the rotary cutting head 8 until the claw plate 39 moves the new blade template A2 into the clamping limiting device 9 which is in the loosening state, the new blade template A2 is blocked by the fixed limiting component at the other side, the clamping component 91 clamps the new blade template A2 in a reverse direction, the compressing cylinder 96 drives the left die plate 94 and the right die plate 95 to move upwards respectively, the movable limiting component 97 is in the limiting state through linkage, the new blade template A2 is clamped and limited, then the two lifting cylinders 36 drive the claw plate 39 to move downwards, the first stage pushing cylinder 33 and the second stage pushing cylinder 38 retract to the initial position, the rotary cutting head 8 lifts and returns to the working area at the middle part of the working table 4, and the action cycle of the blade changing template is completed.

The above process can run at high speed on the cutting machine of the present invention under the control of the intelligent operating system.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The high-speed intelligent cutting machining center is characterized by comprising a cutting machine, a cutting die library and a cutting die plate turnover table, wherein the cutting machine comprises a machine base, an operation table and a cross beam, wherein the operation table and the cross beam are arranged on the machine base; the cutter mold warehouse comprises a frame, a cutter mold storage rack and a lifting device, wherein the cutter mold storage rack and the lifting device are arranged in the frame, a plurality of cutter mold plates are stacked in the cutter mold storage rack up and down in a layered manner, guide posts are respectively arranged at four corners of the frame, guide sleeves which are in sliding fit with the guide posts are arranged on the cutter mold storage rack, and the lifting device drives the cutter mold storage rack to move up and down along the guide posts; the lifting device comprises a motor gear box provided with double output shafts, a driving belt wheel, a driven shaft, driven bearings, driven belt wheels and synchronous belts, wherein the motor gear box is arranged at the top of the frame, the two driving belt wheels are respectively arranged at two ends of the output shafts, the two driven shafts are fixedly arranged at the lower part of the frame and are positioned below the knife template storage rack, the driven shafts are arranged in the two driven bearings in a penetrating manner, the driven belt wheels are arranged at the two ends of the driven shafts, the driving belt wheels drive the driven belt wheels to rotate through the synchronous belts, the synchronous belts are respectively arranged at the left side and the right side of the frame, knife rest fixing plates are respectively arranged on each synchronous belt, one ends of the knife rest fixing plates are fixed on the synchronous belts, and the other ends of the knife rest fixing plates are fixed on the knife template storage rack at the side;

the left side and the right side of the cutter template storage rack are respectively provided with a plurality of slide ways for placing the cutter templates up and down, the right side of the cutter template storage rack is provided with a cutter template locking device for positioning the cutter templates in the slide ways, the cutter template locking device comprises a locking cylinder, a locking operation rod, a locking bearing, a driving rod, a locking rod rotating shaft and a rotating shaft fixing rod, the locking cylinder is fixed at the upper part of the cutter template storage rack, the locking operation rod is fixedly connected with an output shaft of the locking cylinder, the locking operation rod is arranged on two locking bearings in a penetrating manner, the two locking bearings are fixed on the cutter template storage rack and are respectively positioned at two ends of the locking operation rod, the locking operation rod slides up and down along the locking bearings under the driving of the locking cylinder, the rotating shaft fixing rod is fixed at the side face of the cutter template storage rack, a plurality of dodging holes corresponding to the cutter template placing positions of each layer are arranged on the rotating shaft fixing rod, the driving rod, the locking rod and the rotating shaft fixing rod are respectively arranged at the side parts of the cutter template placing positions of each layer in a complete manner, a kidney-shaped hole, a rotating shaft hole and a rotating shaft hole are respectively arranged on the locking rod are respectively in the locking rod and the rotating shaft and pass through the rotating shaft fixing rod and the rotating shaft fixing hole in a sliding manner, and the rotating shaft is movably connected with one end of the rotating shaft in the arc-shaped hole and the arc-shaped hole is arranged at the rotating shaft fixing rod;

the locking operation rod is provided with a contact block, the frame is provided with an upper travel switch and a lower travel switch which are matched with the contact block respectively, and the frame is provided with a stop switch triggered by the knife template storage rack;

the cutting die turnover table comprises two raceway plates, a cylinder mounting plate, a first-stage propelling cylinder, a propelling slide rail, a propelling block, two lifting cylinders, a cylinder connecting plate, a second-stage propelling cylinder and a claw plate with a pull hook, wherein one ends of the two raceway plates are connected with a cutting die library, the other ends of the two raceway plates are connected with a working table, the two raceway plates are separated left and right to form a channel for a cutting die plate to enter and exit the cutting die library, the cylinder mounting plate is fixed on a working table top, the first-stage propelling cylinder and the propelling slide rail are fixed on the cylinder mounting plate, the two lifting cylinders are respectively fixed on the left side and the right side of the propelling block, the cylinder connecting plate is respectively connected with cylinder rods of the two lifting cylinders, the second-stage propelling cylinder is fixed on the cylinder connecting plate, the claw plate is arranged on the cylinder rod of the second-stage propelling cylinder, and the first-stage propelling cylinder drives the two lifting cylinders, the cylinder connecting plate, the second-stage propelling cylinder and the claw plate to reciprocate along the propelling slide rail through the propelling block;

the clamping limiting device comprises a clamping assembly and a limiting assembly, the clamping assembly is arranged on a cutter die fixing plate of the cutting machine, the clamping assembly comprises a left pressing die plate, a right pressing die plate and a pressing cylinder, two pressing cylinders are respectively arranged on the left side and the right side of the cutter die fixing plate, the two pressing cylinders simultaneously act to press or loosen the cutter die plate, the left pressing die plate and the right pressing die plate are respectively arranged on the left side and the right side of the lower surface of the cutter die fixing plate, the pressing cylinders are arranged in the cutter die fixing plate, the pressing cylinders respectively drive the left pressing die plate and the right pressing die plate to press the cutter die plate on the lower surface of the cutter die fixing plate, and the limiting assembly comprises a front limiting part and a rear limiting part which are arranged on the front side and the rear side of the cutter die fixing plate, at least one of the front limiting part and the rear limiting part is a movable limiting part, the other one of the front limiting part and the rear limiting part is a fixed limiting part or a movable limiting part, and the movable limiting part is used for limiting the front side and the rear side of the cutter die plate along with the left pressing die plate or the right pressing die plate.

2. The high-speed intelligent cutting machining center according to claim 1, wherein the pressing cylinder comprises a cylindrical hole arranged in a cutter die fixing plate, a valve core shaft arranged in the cylindrical hole, an upper piston, a lower piston, an upper air chamber and a lower air chamber, wherein the upper piston and the lower piston are respectively arranged on the valve core shaft, the upper air chamber is arranged between the upper piston and the top wall of the cylindrical hole, the lower air chamber is arranged between the upper piston and the lower piston, an upper air pipe interface and a lower air pipe interface are respectively arranged on the cutter die fixing plate, the upper air pipe interface and the lower air pipe interface are respectively communicated with the upper air chamber and the lower air chamber through an upper channel and a lower channel arranged on the cutter die fixing plate, a stop washer is arranged on the inner wall of the cylindrical hole, and the stop washer limits the moving position of the lower piston.

3. The high-speed intelligent cutting machining center according to claim 1, wherein the movable limiting component comprises a first connecting rod, a second connecting rod, a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein the first rotating shaft is fixed on a cutter die fixing plate, the third rotating shaft is fixed on a left die plate or a right die plate, the first rotating shaft is movably arranged in the middle of the first connecting rod, the second rotating shaft is used for movably connecting one end of the first connecting rod with one end of the second connecting rod respectively, the other end of the first connecting rod is provided with a blocking part for limiting the cutter die plate, and the other end of the second connecting rod is movably connected with the third rotating shaft.

4. The high-speed intelligent cutting machining center according to claim 1, wherein the fixed limiting member includes a limiting block and a fastening bolt, the limiting block limiting a moving position of the die plate, the fastening bolt fixing the limiting block on a side surface of the die plate.

5. The high-speed intelligent cutting machining center according to claim 1, wherein limit screws are respectively arranged between the left die plate and the right die plate and the die fixing plate, and the limit screws respectively limit the maximum distance between the left die plate and the right die plate and the die fixing plate.

6. A method of replacing a blade form for use in a high speed intelligent cutting machining center according to claim 1, the method comprising the steps of: