CN113134863A

CN113134863A - High-speed intelligent cutting machining center and method for replacing tool template

Info

Publication number: CN113134863A
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: 2021-07-20
Anticipated expiration: 2041-05-24
Also published as: EP4201614A4; WO2022247237A1; CN113134863B; EP4201614A1

Abstract

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

Description

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

Background

The cutting machine requires frequent replacement of a cutting die according to a cutting pattern, and the cutting die is generally provided on a 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 after the cutter template is replaced is poor, and the size precision of a cut product is low. The prior gear rack mechanism is adopted to replace the tool changing template, so that although the working efficiency is improved and the working strength is reduced, the tool changing template mechanism has several defects: 1. the tool changing template mechanism is arranged on the side surface of the cutting machine, so that 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 mould, the working panel needs to rotate 90 degrees, the tool changing template can be changed when the tool changing template is changed into a transverse direction, the structure is complex, and faults are easy to occur; 3. the gear rack mechanism has high noise, complex structure and troublesome maintenance when in operation; 4. after the cutting die plate is replaced, displacement is generated in the moving or rotating process, so that the machining station is inaccurate, and the product quality is unstable; 5. the running speed is low, and the time for replacing the tool template is long.

Disclosure of Invention

The invention aims to solve the technical problems that a high-speed intelligent cutting machining center and a method for changing a tool template are provided, the tool template changing speed is high, a mechanism for changing the tool template runs stably, the time for changing the tool template is shortened, the use efficiency of a cutting machine is obviously improved, the position repeatability and the positioning accuracy of the tool template changing are also improved, the size accuracy of a cutting product is improved, the requirements of a user are met, and the size stability of the cutting product is good.

The invention is realized in this way, provide a high-speed intelligence to cut the machining center, including cutting machine, cutting die storehouse and cutting die plate all revolving stage, the cutting machine includes the bed plate and job platform and crossbeam set up on the bed plate, there are drift slide rails on the crossbeam, there are matched with drift slide rails on the drift slide rail, there are cutting die fixed plates under the drift slide rail, there are rotary cutting heads on the fixed plate of cutting die, there are cutting die plate and cutting die plate that cut and clamp the stop device in the bottom of the rotary cutting head, the cutting die plate all revolving stage locates at the left side of the job platform, its one end is connected with cutting die storehouse, its other end is connected with job platform; the cutting die library comprises a frame, a cutting die plate storage rack and a lifting device thereof, wherein the cutting die plate storage rack is arranged in the frame, a plurality of cutting die plates are stacked in the cutting die plate storage rack layer by layer up and down, guide posts are respectively arranged at four corners of the frame, guide sleeves in sliding fit with the guide posts are arranged on the cutting die plate storage rack, and the lifting device drives the cutting die plate storage rack to move up and down along the guide posts; the lifting device comprises a motor gear box 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 bearings are fixed at the lower part of the frame and positioned below the knife template storage rack, the driven shaft is arranged in the two driven bearings in a penetrating manner, the driven belt wheels are arranged at two ends of the driven shaft, 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 end of each knife rest fixing plate is fixed on the synchronous belts, and the other end of each knife rest fixing plate is fixed on the knife template storage rack on the side.

Furthermore, a plurality of slideways for placing the knife templates are respectively arranged on the left side and the right side of the knife template storage rack from top to bottom, a knife template locking device for positioning the knife templates in the slideways is arranged on the right side of the knife template storage rack, the knife template locking device comprises a locking cylinder, a locking operating rod, locking bearings, 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 operating rod is fixedly connected with an output shaft of the locking cylinder, the locking operating rod is arranged on the two locking bearings in a penetrating manner, the two locking bearings are fixed on the knife template storage rack and are respectively positioned at two ends of the locking operating rod, the locking operating 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 avoiding holes corresponding to the placing positions of the knife templates on each layer are arranged on the rotating shaft fixing rod, the actuating lever, locking lever and locking lever pivot set up the lateral part of placing the position at every layer of cutting die board respectively with the suit, set up waist shape hole on the locking lever respectively, pivot hole and arc portion, the pivot hole that the locking lever pivot passed pivot dead lever and locking lever is connected the locking lever swing joint in the locking lever dodges the hole, actuating lever one end is fixed on the locking lever, its other end is pegged graft in the waist shape hole of locking lever movably, the arc portion joint of locking lever is in the spacing draw-in groove of setting at the cutting die board side, the locking action bars slides from top to bottom and drives the locking lever through the actuating lever and rotate around the locking lever pivot.

Furthermore, a contact block is arranged on the locking operating 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.

The cutting die turnover table comprises two rolling plates, a cylinder mounting plate, a first-stage propulsion cylinder, a propulsion slide rail, a propulsion block, two lifting cylinders, a cylinder connecting plate, a second-stage propulsion cylinder and a claw plate with a pull hook, one end of each of the two rolling plates is connected with a cutting die library, the other end of each of the two rolling plates is connected with an operation table, the two rolling plates are separated from left to right to form a channel for the cutting die plate to enter and exit the cutting die library, the cylinder mounting plate is fixed on the operation table surface, the first-stage propulsion cylinder and the propulsion 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 propulsion block, the cylinder connecting plate is respectively connected with cylinder rods of the two lifting cylinders, the second-stage propulsion cylinder is fixed on the cylinder connecting plate, the claw plate is arranged on a cylinder rod of the second-stage propulsion cylinder, and the first-stage propulsion cylinder simultaneously drives the two lifting cylinders through the propulsion block, The cylinder connecting plate, the second-stage propulsion cylinder and the claw plate reciprocate along the propulsion slide rail.

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

Furthermore, the compressing cylinder comprises a cylindrical hole arranged in the cutting die fixing plate, a valve core shaft, an upper piston, a lower piston, an upper air chamber and a lower air chamber, wherein the valve core shaft, the upper piston, the lower piston, the upper air chamber and the lower air chamber are arranged in the cylindrical hole, 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 cutting 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 which are arranged on the cutting die fixing plate, and a stop washer is arranged on the inner wall of the cylindrical hole and limits the moving position of the lower piston.

Further, the movable limiting part 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 cutting die fixing plate, the third rotating shaft is fixed on the left die pressing plate or the right die pressing plate, the first rotating shaft is movably arranged in the middle of the first connecting rod, one end portions of the first connecting rod and the second connecting rod are respectively movably connected together through the second rotating shaft, the other end of the first connecting rod is provided with a blocking portion to limit the cutting 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 cutting die plate, and the fastening bolt fixes the limiting block on the side surface of the cutting die fixing plate.

And further, limit screws are respectively arranged between the left die pressing plate and the cutting die fixing plate and between the right die pressing plate and the cutting die fixing plate, and the limit screws respectively limit the maximum distance between the left die pressing plate and the cutting die fixing plate and the maximum distance between the right die pressing plate and the cutting die fixing plate.

The invention is realized in such a way, and provides a method for replacing a cutting template, which is used in the high-speed intelligent cutting center, and comprises the following steps:

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

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

step three, immediately, the second-stage propulsion cylinder and the first-stage propulsion cylinder simultaneously move towards the direction of the cutter die library, the old cutter die plate is pulled out from the clamping limiting device in the loosening state in the step one and moves to a set position in the cutter die library, and then after the hook claw plate is driven by the two lifting cylinders to move downwards, the second-stage propulsion cylinder retracts, and the hook claw plate leaves the cutter die library;

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

step five, the first-stage propulsion cylinder drives the second-stage propulsion cylinder and the claw plate to move towards the direction of the rotary cutting head, meanwhile, the second-stage propulsion cylinder also drives the hook plate to move towards the direction of the rotary cutting head until the hook plate moves the new cutter template to the clamping limiting device in the loosening state, the new die plate is blocked by the fixed limiting part at the other side, the clamping component acts in the opposite direction to clamp the new die plate, the pressing cylinder drives the left die plate and the right die plate to move upwards respectively, the movable limiting part is in a limiting state through linkage, the new cutter template is clamped and limited, and then after the two lifting cylinders drive the hook claw plate to move downwards, the first-stage propulsion cylinder and the second-stage propulsion cylinder return to the initial positions, and the rotary cutting head returns to the working area in the middle of the workbench after being lifted, so that the action cycle of changing the tool template is completed.

Compared with the prior art, the method for intelligently cutting the machining center at high speed and replacing the tool template has the following characteristics:

1. the tool changing template can be automatically and quickly changed, the time for changing the tool changing 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 operates stably and has low failure rate.

Drawings

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

FIG. 2 is a perspective view of FIG. 1 from another angle;

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

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

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

FIG. 6 is a perspective view of FIG. 5 from another angle;

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

FIG. 8 is a perspective view of the die plate of FIG. 5;

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

FIG. 10 is a perspective view of the rotary severing head of FIG. 1;

FIG. 11 is a perspective view of the knife mold fixing plate and the knife mold clamping and limiting device shown in FIG. 10 in an assembled state;

FIG. 12 is a schematic perspective view of the alternate angle of FIG. 11, showing a section N-N;

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

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present 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 merely illustrative of the invention and are not intended to limit the invention.

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

Cutting machine 1 includes frame and setting up operation platform 4 and crossbeam 5 on the frame. The cross member 5 is located above the work table 4. Punch slide rails 6 are respectively arranged on the front side and the rear side of the cross beam 5, a punch slide seat 7 matched with the punch slide rails 6 is arranged on the two punch slide rails 6, a rotary cutting head 8 is arranged below the punch slide seat 7, a cutting die fixing plate 10 is arranged at the bottom of the rotary cutting head 8, and a cutting die plate A and a cutting die plate clamping limiting device 9 for cutting are arranged on the cutting 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 to be guided out.

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

Referring to fig. 4 to 9, the cutting die magazine 2 includes a frame 21, a cutting die plate storage rack 22 disposed in the frame 21, and a lifting device 23 thereof. An entrance/exit portion 24 for the die plate a to enter/exit the die plate storage rack 22 is provided on each of the front and rear side surfaces of the frame 21. The entrance/exit portion 4 on the front side is connected to the cutting machine 1 and supplies a desired blade plate a to the cutting machine 1. The entrance and exit portion 4 located on the rear side is used for replacing and sequentially arranging the cutting die plates a in the frame 21. A plurality of cutting die plates A are stacked up and down in a cutting die plate storage rack 22 in a layered manner, 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 cutting die plate storage rack 22. The lifting device 23 drives the knife board 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 dual output shafts, 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, the two driving belt pulleys 232 are respectively arranged at two ends of the output shaft, the two driven bearings 234 are fixed at the lower part of the frame 21 and 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 the driven belt pulleys 235 are arranged at two ends of the driven shaft 233. The driving pulley 232 rotates the driven pulley 235 via the timing belt 236. Timing belts 236 are provided on the left and right sides of the frame 21, respectively. A tool post fixing plate 237 is provided to each timing belt 236. One end of the tool holder fixing plate 237 is fixed to the timing belt 236, and the other end thereof is fixed to the tool holder 22 on the side. The two timing belts 236 drive the cutter die storage rack 22 to move up and down along the guide posts 25 through the cutter frame fixing plates 237 thereon. The synchronous belt technology is used, so that the structure of the lifting device 3 is simplified, the position repeatability of the up-and-down operation of the cutting die plate storage rack 22 is improved, and the operation stability is improved.

A plurality of slideways 27 for placing the cutting die plates a are respectively arranged on the upper side and the lower side of the left side and the right side of the cutting die storage rack 22, and a cutting die plate locking device 28 for positioning the cutting die plates a in the slideways 27 is arranged on the right side of the cutting die storage rack 22.

The knife board locking device 28 includes a locking cylinder 281, a locking operation lever 282, a locking bearing 283, a driving lever 284, a locking lever 285, a locking lever rotating shaft 286, and a rotating shaft fixing lever 287. The lock cylinder 281, the lock bearing 283 and the rotation shaft fixing lever 287 are fixed to the cutter die storage frame 22, respectively.

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 lock lever 282 is inserted into two lock bearings 283, the two lock bearings 283 are fixed to the die storage rack 22 and located at both ends of the lock lever 282, and the lock lever 282 is driven by the lock cylinder 281 to slide up and down along the lock bearings 283. The rotating shaft fixing rod 287 is fixed to a side surface of the cutting die storage rack 22, and a plurality of avoiding holes 2871 corresponding to the placing positions of the cutting die plates a on each layer are formed in the rotating shaft fixing rod 287.

A driving lever 284, a lock lever 285, and a lock lever rotating shaft 286 are integrally provided at the side of the placement position of each layer of blade form a, respectively. As shown in fig. 9, a waist-shaped hole 2851, a rotation shaft hole 2852 and an arc-shaped portion 2853 are provided on the lock lever 285, respectively, and the waist-shaped hole 2851 and the arc-shaped portion 2853 are located on both sides of the rotation shaft hole 2852, respectively. Lock lever rotating shaft 286 passes through rotating shaft fixing rod 287 and rotating shaft hole 2852 of lock lever 285 to movably connect lock lever 285 in lock lever relief hole 2871, and lock lever 285 rotates around lock lever rotating shaft 286. One end of driving rod 284 is fixed on locking lever 285, and the other end thereof is movably inserted into kidney-shaped hole 2851 of locking lever 285. The arc-shaped part 2853 of the lock lever 285 is clamped in the limit clamping groove B arranged at the side of the knife template a, as shown in fig. 8.

Locking operating lever 282 slides from top to bottom and drives locking lever 285 to rotate around locking lever pivot 286 through actuating lever 284 to make the arc portion 2853 of locking lever 285 block in the spacing draw-in groove B of cutting die board A with cutting die board A locking, perhaps, make the arc portion 2853 of locking lever 285 release out from the spacing draw-in groove B of cutting die board A and unlock cutting die board A.

The contact block 288 is provided on the locking lever 282, the upper and lower stroke switches 210 and 211 engaged with the contact block 288 are provided on the frame 21, and when the contact block 288 moves up and down along with the locking lever 282, the upper and lower stroke switches 210 and 211 are triggered to limit the up and down positions of the movement of the locking lever 282, thereby improving the safety of the operation of the knife board locking device 28.

The locking cylinder 281 is adopted as power, so that the response time of the cutting die plate locking device 28 is shortened, and the working efficiency of the cutting die supply system is improved.

Rollers 29 are provided on the side walls of each of the runners 27. The roller 29 is located above the cutting die plate a and close to the access portion 24 on the rear side of the frame 21, and plays a role in limiting and guiding the cutting die plate a in or out of the cutting die storage rack 22. A tool post support 212 is provided at the bottom of the tool magazine 22, and the tool post support 212 is fixed to the frame 21. A tool rest stopper column 213 is provided on the top of the frame 21. In this embodiment, four tool post support posts 212 are respectively disposed at four corners of the bottom of the tool storage rack 22, and four tool post position-limiting 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 tool storage rack 22.

The frame 21 is provided with a stop switch 214 triggered by the cutting die storage rack 22, and the stop switch 214 limits the descending position of the cutting die storage rack 22, thereby improving the safety and stability of the movement of the cutting die storage rack 22.

Referring to fig. 1 and fig. 3, the rotary table 3 includes two track 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 hook plate 39 with a hook 310. One end of each of the two raceway plates 31 is connected with the cutting die magazine 2, the other end of each of the two raceway plates 31 is connected with the operation table 4, and the two raceway plates 31 are separated from left to right to form a passage for the cutting die plate A to enter and exit the cutting die magazine 2. The cylinder mounting plate 32 is fixed to the surface of the work table 4, and the first-stage propulsion cylinder 33 and the propulsion slide rail 34 are fixed to 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 cylinders of the first-stage propulsion cylinder 33 and the second-stage propulsion cylinder 38 are arranged, so that the length of the first-stage propulsion cylinder 33 can be shortened, the first-stage propulsion cylinder 33 is prevented from being too long, the cost is saved, the stability of movement of the propulsion block 35 is improved, and the two-stage cylinders can be simultaneously propelled or retracted in the propelling or retracting process, so that the propelling or retracting time is shortened, the rapid movement of the propulsion block 35 is realized, the knife template A is rapidly and stably replaced, and the operation efficiency is improved. The provision of the pusher shoe 34 increases the stability of the pusher block 35 when rapidly advanced or retracted.

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 attachment plate 37, and the finger plate 39 is provided on the cylinder rod of the second-stage propulsion cylinder 38. The first-stage propulsion cylinder 33 simultaneously drives the two lifting cylinders 36, the cylinder connecting plate 37, the second-stage propulsion cylinder 38 and the claw plate 39 to reciprocate along the propulsion slide rail 34 through the propulsion block 35. The draw hook 310 of the hook claw plate 39 is inserted into the hook hole C provided in the insert die plate a, and as shown in fig. 8, the insert die plate a is pushed into the loosened clamping stopper 9 or pulled out from the loosened 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 cutting die fixing plate 10 located 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 die plate 94 and the right die plate 95 are respectively disposed on the left and right sides of the lower surface of the cutting die fixing plate 10, and the pressing cylinders 96 are disposed in the cutting die fixing plate 10 and symmetrically located at the left and right corners and the front and rear corners of the cutting die fixing plate 10. The pressing cylinders 96 respectively drive the left and right die

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 one of the front limiting part and the rear limiting part is a fixed limiting part or a movable limiting part 97. The movable limiting part 97 is linked with the left die plate 94 or the right die plate 95 to limit or unlock the front side surface and the rear side surface of the 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.

When the cutting die plate A is in a clamping state, the left pressing die plate 94 and the right pressing die plate 95 respectively press the cutting die plate A on the lower surface of the cutting die fixing plate 10 in the vertical direction under the action of the pressing air cylinder 96, and at the moment, the limiting assemblies limit the front side surface and the rear side surface of the cutting die plate A at the same time, so that the repeatability and the positioning accuracy of the position of the cutting die plate are improved, and the size accuracy of a cut product is improved.

The action process of the limiting assembly 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 position-limiting member 97 also limits the front side surface and/or the rear side surface of the die plate a. Conversely, when the left die plate 94 and the right die plate 95 of the clamping assembly 91 release the vertical compression of the tool setting die plate a, the movable limiting component 97 also releases the limit in the front side or/and rear side direction of the tool setting die plate a.

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

The compression cylinder 96 includes a cylindrical bore 961 disposed in the die plate 10, and a spool shaft 962, an upper piston 963, a lower piston 964, an upper air chamber 965, and a lower air chamber 966 disposed in the cylindrical bore 961. An upper piston 963 and a lower piston 964 are disposed on the poppet shaft 962, respectively, an upper plenum 965 is disposed between the upper piston 963 and the top wall of the cylindrical bore 961, and a lower plenum 966 is disposed between the upper piston 963 and the lower piston 964. An upper air pipe joint 98 and a lower air pipe joint 99 are respectively arranged on the cutting die fixing plate 10. The upper and lower air pipe interfaces 98 and 99 communicate with the upper and

lower air chambers

965 and 966, respectively, through upper and

lower passages

967 and 968 provided on the cutter die fixing plate 10.

According to the invention, the pressing cylinder 96 is directly arranged in the cutting die fixing plate 10, so that the structure of the cutting die fixing plate clamping and limiting device is simplified, the weight of the cutting die fixing plate 10 is reduced, and the stability of the cutting die fixing plate is improved.

The action process of the pressing air cylinder 96 is as follows: when the upper air chamber 965 is filled with high-pressure air through the upper air pipe interface 98, and the lower air chamber 966 recovers the 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 compression die plate 94 or the right compression die plate 95 open, so that the unlocking of the tool setting die plate a is realized. When the lower air chamber 966 is filled with high-pressure air through the lower air pipe joint 99, and the upper air chamber 965 recovers the air through the upper air pipe joint 98, the valve plug shaft 962 is driven to move upwards and reset together with the upper piston 963 and the lower piston 964 on the valve plug shaft 962, and the valve plug shaft 962 drives the left die plate 94 or the right die plate 95 to press the knife die plate a.

A stop washer 969 is provided on the inner wall of the cylindrical hole 961, and the stop washer 969 restricts the moving position of the lower piston 964, thereby restricting the moving position of the spool shaft 962 and restricting the extension and contraction height of the pressure cylinder 96.

The fixed limiting part comprises a limiting block and a fastening bolt (not shown in the figure). The limiting block limits the moving position of the cutter die plate A, and the limiting block is fixed on the side surface of the cutter die fixing plate 10 through the fastening bolt.

The movable limiting component 97 includes 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 cutter die fixing plate 10, the third rotating shaft 975 is fixed on the left press die plate 94 or the right press die plate 95, the first rotating shaft 973 is movably disposed in the middle of the first connecting rod 971, the second rotating shaft 974 movably connects one end of the first connecting rod 971 and one end of the second connecting rod 972 together, the other end of the first connecting rod 971 is provided with a blocking portion 976 for limiting the cutter 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 or arc-shaped surface 977 is disposed on the blocking portion 976 of the first link 971, so that the knife plate a can be pushed back to a correct position during the process of limiting the knife plate a by the first link 971.

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

And limiting screws 92 are respectively arranged between the left die pressing plate 94, the right die pressing plate 95 and the cutting die fixing plate 10. The limit screws 92 respectively adjust and limit the maximum distance between the left die plate 94 and the right die plate 95 and the cutting die fixing plate 10.

The clamping and limiting device 9 can be used for quickly limiting and clamping the cutter template A, so that the cutter template A can be quickly replaced, the position repeatability is good, and the positioning precision is high.

A side cover 93 is also provided on the cutting die fixing plate 10, and the side cover 93 covers the upper air pipe interface 98 and the lower air pipe interface 99.

The invention also discloses a method for replacing the tool changing template, which is used on the high-speed intelligent cutting processing center and comprises the following steps:

firstly, the rotary cutting head 8 is moved to the position right above the cutting die plate turnover table 3 from a working area in the middle of the operation table 4, the position of a movable limiting part 97 of the clamping limiting device 9 is close to the cutting die library 2, the rotary cutting head 8 drives the cutting die plate A to descend to the position of the cutting die plate, a pressing air cylinder 96 respectively drives a left pressing die plate 94 and a right pressing die plate 95 to move downwards, the movable limiting part 97 is in an unlocking state through linkage, the clamping assembly 91 is in a loosening state, and the old cutting die plate A1 waits for replacement.

In the second step, the first-stage propulsion cylinder 33 drives the second-stage propulsion cylinder 38 and the hook plate 39 to move from the initial positions to the direction of the rotary cutting head 8, meanwhile, the second-stage propulsion cylinder 38 also drives the hook plate 39 to move to the direction of the rotary cutting head 8 until the hook plate 39 is positioned below the old cutter template a1 to be replaced, and the two lifting cylinders 36 simultaneously drive the second-stage propulsion cylinder 38 and the hook plate 39 to move upwards through the cylinder connecting plate 37 until the pull hook 310 of the hook plate 39 is inserted upwards into the hook hole C of the old cutter template a 1.

And step three, immediately, the second-stage propulsion cylinder 38 and the first-stage propulsion cylinder 33 simultaneously move towards the direction of the cutting die library 2, the old cutting die plate A is pulled out of the clamping limiting device 9 in the loosening state in the step one and moves to a set position in the cutting die library 2, then the two lifting cylinders 36 drive the hook plate 39 to move downwards, the second-stage propulsion cylinder 38 retracts, and the hook plate 39 leaves the cutting die library 2.

And step four, after the lifting device 23 in the cutter die library 2 moves to lift the new cutter die plate A2 to be replaced to a proper position, the second-stage propulsion air cylinder 38 moves to the position of the cutter die library 2 again, and the two lifting air cylinders 36 lift the hook plate 39 again until the pulling hook 310 of the hook plate 39 is inserted upwards into the hook hole C of the new cutter die plate A2.

Step five, the first-stage propulsion cylinder 33 drives the second-stage propulsion cylinder 38 and the hook plate 39 to move towards the direction of the rotary cutting head 8, meanwhile, the second-stage propulsion cylinder 38 also drives the hook plate 39 to move towards the direction of the rotary cutting head 8, until the hook plate 39 moves the new knife template A2 into the clamping and limiting device 9 which is already in a loosening state, the new knife template A2 is blocked by the fixed limiting component on the other side, the clamping component 91 acts in the opposite direction to clamp the new knife template A2, the pressing cylinder 96 respectively drives the left pressing template 94 and the right pressing template 95 to move upwards, the movable limiting component 97 is in a limiting state through linkage, the new knife template A2 is clamped and limited, then after the two lifting cylinders 36 drive the hook plate 39 to move downwards, the first-stage propulsion cylinder 33 and the second-stage propulsion cylinder 38 return to the initial position, and the rotary cutting head 8 returns to the working area in the middle of the operation platform 4 after lifting, and finishing the action cycle of the tool changing template.

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

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A high-speed intelligent cutting machining center is characterized by comprising a cutting machine, a cutting die library and a cutting die plate revolving table, wherein the cutting machine comprises a base, and an operation table and a cross beam which are arranged on the base; the cutting die library comprises a frame, a cutting die plate storage rack and a lifting device thereof, wherein the cutting die plate storage rack is arranged in the frame, a plurality of cutting die plates are stacked in the cutting die plate storage rack layer by layer up and down, guide posts are respectively arranged at four corners of the frame, guide sleeves in sliding fit with the guide posts are arranged on the cutting die plate storage rack, and the lifting device drives the cutting die plate storage rack to move up and down along the guide posts; the lifting device comprises a motor gear box 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 bearings are fixed at the lower part of the frame and positioned below the knife template storage rack, the driven shaft is arranged in the two driven bearings in a penetrating manner, the driven belt wheels are arranged at two ends of the driven shaft, 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 end of each knife rest fixing plate is fixed on the synchronous belts, and the other end of each knife rest fixing plate is fixed on the knife template storage rack on the side.

2. The high-speed intelligent cutting machining center according to claim 1, wherein a plurality of slideways for placing the cutting boards are respectively arranged on the left side and the right side of the cutting board storage rack up and down, a cutting board locking device for positioning the cutting boards in the slideways is arranged on the right side of the cutting board storage rack, the cutting board locking device comprises a locking cylinder, a locking operating 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 portion of the cutting board storage rack, the locking operating rod is fixedly connected with an output shaft of the locking cylinder, the locking operating rod is arranged on the two locking bearings in a penetrating manner, the two locking bearings are fixed on the cutting board storage rack and are respectively located at two ends of the locking operating rod, the locking operating rod slides up and down along the locking bearing under the driving of the locking cylinder, the rotating shaft fixing rod is fixed on the side of the cutting board storage rack, set up a plurality ofly on the pivot dead lever and place the hole of dodging that the position corresponds with every layer cutting die board, the actuating lever, locking lever and locking lever pivot set up the lateral part of placing the position at every layer cutting die board respectively with the suit, set up waist shape hole on the locking lever respectively, pivot hole and arc portion, the locking lever pivot is passed the pivot hole of pivot dead lever and locking lever and is connected the locking lever movably in the locking lever dodges the hole, actuating lever one end is fixed on the locking lever, its other end is pegged graft in the waist shape hole of locking lever movably, the arc portion joint of locking lever is in the spacing draw-in groove of setting at the cutting die board side, the locking action bars slides from top to bottom and drives the locking lever through the actuating lever and rotate around the locking lever pivot.

3. The high-speed intelligent cutting machining center according to claim 2, wherein 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 respectively matched with the contact block, and the frame is provided with a stop switch which is triggered by the knife template storage rack.

4. The high-speed intelligent cutting machining center according to claim 1, wherein the cutting die transfer table comprises two rolling plates, a cylinder mounting plate, a first-stage propulsion cylinder, a propulsion slide rail, a propulsion block, two lifting cylinders, a cylinder connecting plate, a second-stage propulsion cylinder and a hook plate with a draw hook, one end of each of the two rolling plates is connected with the cutting die library, the other end of each of the two rolling plates is connected with the workbench, the two rolling plates are separated from the left and the right to form a channel for the cutting die plate to enter and exit from the cutting die library, the cylinder mounting plate is fixed on the workbench surface, the first-stage propulsion cylinder and the propulsion slide rail are fixed on the cylinder mounting plate, the two lifting cylinders are respectively fixed on the left and the right of the propulsion block, the cylinder connecting plate is respectively connected with cylinder rods of the two lifting cylinders, the second-stage propulsion cylinder is fixed on the cylinder connecting plate, and the hook plate is arranged on a cylinder rod of the second-stage propulsion cylinder, the first-stage propulsion cylinder drives the two lifting cylinders, the cylinder connecting plate, the second-stage propulsion cylinder and the hook plate to reciprocate along the propulsion slide rail through the propulsion block.

5. The high-speed intelligent cutting machining center according to claim 4, wherein the clamping and limiting device comprises a clamping assembly and a limiting assembly, the clamping assembly is mounted on a cutting die fixing plate of the cutting machine, the clamping assembly comprises a left die plate, a right die plate and a pressing cylinder, two pressing cylinders are respectively arranged on the left side and the right side of the cutting die fixing plate, the two pressing cylinders simultaneously act to press or loosen the cutting die plate, the left die plate and the right die plate are respectively arranged on the left side and the right side of the lower surface of the cutting die fixing plate, the pressing cylinders are arranged in the cutting die fixing plate, the pressing cylinders respectively drive the left die plate and the right die plate to press the cutting die plate on the lower surface of the cutting die fixing plate, 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, wherein 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 die plate or the right die plate to limit the front side surface and the rear side surface of the die plate.

6. The high-speed intelligent cutting machining center according to claim 5, wherein the pressing cylinder includes a cylindrical hole provided in the cutting die fixing plate, and a spool shaft, an upper piston, a lower piston, an upper air chamber, and a lower air chamber provided in the cylindrical hole, the upper piston and the lower piston are respectively provided on the spool shaft, the upper air chamber is provided between the upper piston and a top wall of the cylindrical hole, the lower air chamber is provided between the upper piston and the lower piston, the cutting die fixing plate is respectively provided with an upper air pipe interface and a lower air pipe interface, 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 provided on the cutting die fixing plate, and a stopper washer is provided on an inner wall of the cylindrical hole to restrict a moving position of the lower piston.

7. The high-speed intelligent cutting machining center according to claim 5, 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 the cutting 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 movably connects one end portions of the first connecting rod and the second connecting rod together, the other end of the first connecting rod is provided with a blocking portion for limiting the cutting die plate, and the other end of the second connecting rod is movably connected with the third rotating shaft.

8. The high-speed intelligent cutting machining center according to claim 5, wherein the fixing limiting part comprises a limiting block and a fastening bolt, the limiting block limits the moving position of the cutting die plate, and the fastening bolt fixes the limiting block on the side surface of the cutting die fixing plate.

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

10. A method of changing a cutting template for use in a high speed intelligent cutoff machining center according to claim 5, comprising the steps of: