CN109927208A - A kind of novel waste and old tire recycling processing system - Google Patents

Abstract

The invention discloses a kind of novel waste and old tire recycling processing systems, including rack, the disconnecting device in the rack, the spinning unit matched with the disconnecting device and the crushing device matched with the spinning unit；The spinning unit includes can the claw hook of sweeping action, the antiwind structure that matches with the claw hook and for so that tire is in the location structure to reel off raw silk from cocoons on station；The rack is equipped with the conveying device for transport tire；The conveying device includes can the conveying roller of sweeping action, the 8th actuator for driving the conveying roller sweeping action and the slide construction matched with the conveying roller；The present invention is equipped with by conveying roller, the 8th actuator and slide construction, and tire is automatically conveyed, convenient and efficient, it is time saving and energy saving, the time for substantially reducing intermediate transition consumption, processing efficiency is improved, the working strength of staff is also reduced.

Description

A kind of novel waste and old tire recycling processing system

Technical field

The invention belongs to rubber industry wastewater technical fields, more particularly, to a kind of novel waste and old tire recycling processing system.

Background technique

As the yield of automobile rises year by year, so that the waste tire amount generated every year also rises year by year, it is useless in order to reduce The various composition in waste tire is converted available secondary raw material by pollution of the old tire to environment, people.

Since the recovery processing of tire needs multiple processes, centre unavoidably needs for tire to be transferred to from a station On another station；Currently, existing reclaimer generally requires manually to shift tire, since tire is heavier, seriously increase The workload of staff, it is time-consuming and laborious, processing efficiency has been dragged slowly significantly.

Summary of the invention

The present invention for overcome the deficiencies in the prior art, provides a kind of novel waste and old wheel time saving and energy saving, high in machining efficiency Tire recovery and processing system.

To achieve the goals above, the invention adopts the following technical scheme: a kind of novel waste and old tire recycling processing system, It reels off raw silk from cocoons including rack, the disconnecting device in the rack, the spinning unit matched with the disconnecting device and with described The crushing device that device matches；The spinning unit include can sweeping action claw hook, match with the claw hook it is anti-tangle Around structure and for so that tire is in the location structure to reel off raw silk from cocoons on station；The rack is equipped with the conveying for transport tire Device；The conveying device include can sweeping action conveying roller, the 8th actuator for driving the conveying roller sweeping action And the slide construction matched with the conveying roller；By being equipped with for conveying roller, the 8th actuator and slide construction, so that Tire can be transported on another station from a station automatically, convenient and efficient, time saving and energy saving, substantially reduce centre The time for transporting consumption, processing efficiency is improved, the working strength of staff is also reduced.

The slide construction includes sliding strut and the cunning sliding strut and being detachably connected in the rack Moving frame and the slide roller being rotatably assorted with the sliding rack；By the setting of above structure, so that it is not necessarily to the driving of actuator, wheel Tire can slide into next station along slide roller, convenient and efficient, save equipment cost.

The location structure include the posting being detachably connected with the rack, can sweeping action positioning plate, be used for Drive the fourth drive member of the positioning plate sweeping action and the limit assembly for being fixed on tire in the posting；It is logical The setting for crossing above structure, enables tire to be fixed on and reels off raw silk from cocoons on station, the progress for work of conveniently reeling off raw silk from cocoons.

The posting includes that match with the positioning plate positioning board slot, the claw hook through-hole that matches with the claw hook And in the positioning baffle being vertically arranged；By the setting of above structure, enter in posting convenient for tire, is also convenient for claw hook entrance In posting.

The positioning plate includes the upper plate matched with the positioning board slot, the lower plate matched with the upper plate And the locating piece on the lower plate；By the setting of above structure, enable positioning plate is stable to fix tire It is reeling off raw silk from cocoons on station, the progress for work of conveniently reeling off raw silk from cocoons.

The disconnecting device include can sweeping action cutting member, for driving the first of the cutting member sweeping action to drive Moving part, the synchronous plate for connecting the cutting member and first actuator and the compressing structure for fixing tire；Pass through The setting of disconnecting device enables the steel wire of tire lip annular to be cut off, and the steel wire after cutting is easier to be drawn out, more It is time saving and energy saving, improve the efficiency of wire drawing work；The deformation degree of steel wire is smaller simultaneously, it is not easy to be wrapped on wire drawing hook, i.e., Make to be wrapped on wire drawing hook, is no longer annular since steel wire has been cut off, so also very easy remove from wire drawing hook, Guarantee that wire drawing work can be carried out smoothly always, so that production is highly efficient.

The cutting member includes the upper cutter head being detachably connected with the synchronous plate, the auxiliary cutter head in the upper cutter head And the lower cutter head matched with the upper cutter head；By the setting of above structure, steel wire is very readily cut off, Cut more convenient, good cutting effect.

In conclusion the present invention being equipped with by conveying roller, the 8th actuator and slide construction, enable tire It is automatically conveyed, it is convenient and efficient, it is time saving and energy saving, the time of intermediate transition consumption is substantially reduced, processing efficiency is improved, also drops The low working strength of staff.

Detailed description of the invention

Fig. 1 is schematic perspective view of the invention.

Fig. 2 is the enlarged diagram in Fig. 1 at A.

Fig. 3 is the enlarged diagram in Fig. 1 at B.

Fig. 4 is the schematic perspective view of compressing structure in the present invention.

Fig. 5 is perspective cross-sectional structural schematic diagram of the invention.

Fig. 6 is the enlarged diagram in Fig. 5 at C.

Fig. 7 is the enlarged diagram in Fig. 5 at D.

Fig. 8 is the enlarged diagram in Fig. 5 at E.

Fig. 9 is the schematic perspective view of driving lever in the present invention.

Figure 10 is the perspective cross-sectional structural schematic diagram of positioning plate in the present invention.

Figure 11 is the schematic perspective view at another visual angle of the invention.

Figure 12 is the enlarged diagram in Figure 11 at F.

Figure 13 is the overlooking structure diagram of crushing device in the present invention.

Figure 14 is the schematic perspective view of the embodiment of the present invention 2.

Specific embodiment

Embodiment 1:

As shown in figures 1-13, a kind of novel waste and old tire recycling processing system, including rack 1, disconnecting device, spinning unit and broken Crushing device；Wherein, disconnecting device includes cutting member 21, the first actuator 22, synchronous plate 23 and compressing structure；First actuator is The cylinder bought in the market, hereinafter referred to as No.1 cylinder, this is the prior art, therefore this will not be repeated here；It is mounted in rack One cutting frame, No.1 cylinder are bolted on the cutting frame；Synchronous plate is mounted on the output shaft of No.1 cylinder, Ke Yi The driving of No.1 cylinder is got off pick-up and down；Cutting member and compressing structure are installed on synchronous plate, so that the two can be with Synchronous plate lifting and a lifting, guarantee the cooperation that cutting member and compressing structure can be stable；It is mounted with one on the rack A cutting bed 11 matched with cutting member, convenient for carrying out cutting work to the steel wire in tire lip.

Specifically, compressing structure includes compressing bar 24, compressing bar cylinder 25, fixing piece 26 and pressuring piece 27, bar cylinder spiral shell is oppressed Bolt is connected on synchronous plate, and compressing bar is mounted in compressing bar cylinder, can be slidably reciprocated along the inner wall of compressing bar cylinder；Fixing piece It is bolted to the lower end of compressing bar, facilitates compression tire；Pressuring piece is mounted in compressing bar cylinder, which is a bullet Spring, one end act on the roof in compressing bar cylinder, and the other end acts on the top of pressuring piece；The bottom of fixing piece is lower than The bottom of cutting member, so when declining under driving of the synchronous plate in No.1 cylinder, fixing piece meeting elder generation and tire interface will be taken turns After tire is fixed, cutting member just meeting and tire interface, by the steel wire cutting in tire lip；Since tire has been fixed, so cutting During cutting, tire lip will not slide cutter member, guarantee that cutting member can smoothly cut off steel wire, and due to tire It will not slide, cutting is more stable, so being hardly damaged cutting member, extends the service life of equipment；And oppress bar, compressing bar Cylinder and pressuring piece are coupled, then make fixing piece first and after tire interface, cutting member is still able to continue to decline, guarantee to cut That cuts goes on smoothly, while fixing piece can also give tire enough pressure, guarantees that tire can be fixed, and fixing piece is not yet It is easy to damage.

Specifically, cutting member 21 includes upper cutter head 211, auxiliary cutter head 212 and lower cutter head 213；Upper cutter head is bolted to one On one end of root mounting post, the other end of the mounting post is bolted on synchronous plate；Lower cutter head is mounted on cutting bed 11, with Upper cutter head is corresponding, after upper cutter head decline, can engage with lower cutter head, so that the steel wire in tire lip be cut off；Auxiliary cutter head It is mounted in upper cutter head, is extended outward to form by the side of upper cutter head；The auxiliary cutter head 212 includes blade 2121, sharp portion 2122 And auxiliary blade 2123；Blade is connected with upper cutter head, inclined structure setting, tilts toward the direction far from upper cutter head；Sharp portion is then It is extended outward to form by blade lower end, so that cutting member is easier to puncture tire, facilitates cutting steel wire, and sharp portion also plays The effect of positioning prevents the position cut from sliding, and guarantees the progress that cutting can be stable；Auxiliary blade has been opened up on blade, The auxiliary arc-shaped structure setting of blade, so that the rubber part of tire is easier to be cut, cutting effect is more preferable, but also Cutting member is easier cutting steel wire, plays the role of improving working efficiency.

Specifically, fixing piece 26 includes part noumenon 261, fixed jaw 262 and retaining lugs 263;Part noumenon bolt connects It connects in the lower end of compressing bar 24, is easy for installation and removal；Fixed jaw is mounted on part noumenon, by two epitaxial lateral overgrowth of part noumenon It stretches to be formed, it is inclined to open up, it is tilted toward the direction far from middle part, offers arcwall face between two fixed jaws, so that The fixed range of fixing piece greatly increases, and fixed effect is more preferable, while structure is relatively simple, and structural strength is higher；In fixed jaw End be mounted with retaining lugs, which is extended outward to form by the surface of fixed jaw, and the cross section of retaining lugs is in Semicircle prevents fixing piece in fixed tire to reinforce the frictional force between fixing piece and tire, tire slippage and influence Fixed effect, and then guarantee that tire can smoothly be cut off by stable fixation.

Specifically, spinning unit includes collecting box 30, claw hook 31, the second actuator 32, baffle 33, antiwind structure and determines Bit architecture；Second actuator is the cylinder bought in the market, hereinafter referred to as No. two cylinders, this is the prior art, therefore herein not It repeats；No. two cylinders are mounted in rack 1, and claw hook is mounted on the output end of No. two cylinders, are connect with No. two bolt cylinders, Claw hook is moved back and forth under the driving of No. two cylinders；Baffle is bolted on the rack, is offered baffle thereon and is opened Mouthful, convenient for the installation of No. two cylinders and antiwind structure, the normal operation of the two is not influenced, while can prevent the steel being drawn out again Silk is moved to the excessively position at rear due to elastic force or is intertwined with other components, convenient for steel wire from No. two cylinders and It falls off on claw hook, falls into the collecting box below baffle and be collected, facilitate centralized processing.

Specifically, claw hook 31 includes pawl seat 310, the first pawl section 311, the second pawl section 312 and pawl point 313；Pawl seat bolt connects It connecing on the output end of No. two cylinders, the hemispherical structure in the surface of pawl seat opens up, and diameter is identical as the output shaft of No. two cylinders, So that steel wire is not easy to be wrapped in pawl seat；First pawl section is mounted in pawl seat, is welded with pawl seat, the first pawl section state in a vertical shape Installation, entirety are in the form of a column structure and open up, and cross section is circle, so that steel wire is also not easy to be wrapped in the first pawl section, hold Easily slid along the first vertically-mounted pawl section；Second pawl section is connected with the first pawl section, and the two is by same root cylindrical metal material Direct bending forming forms hook, and the second pawl section is toward inclined downward, while being enable to tick on steel wire, and side Just steel wire slides, so that steel wire is not easy to be wrapped on claw hook, facilitates the continuous work of claw hook, guarantees that wire drawing work can be efficient It carries out, improves production efficiency；Pawl point is mounted in the end of the second pawl section, and the pawl point is tapered, so that claw hook is easier Tire is penetrated, facilitates and pulls out the steel wire in tire lip.

Specifically, antiwind structure includes driving lever 34, third actuator 35 and connection component, connection component includes slide bar slot 341,361 are raised one's hat slide bar 36 and anti-；One end of driving lever is mounted in rack 1, is connect with airframe hinge, can be relative to rack above and below Overturning, the other end are close to the output shaft of No. two cylinders；Third actuator is bolted in rack 1, which is The cylinder bought in the market, hereinafter referred to as No. three cylinders, this is the prior art, therefore this will not be repeated here；In No. three cylinders It is mounted with a slide bar on output end, has opened up a slide bar slot on driving lever, for slide bar right through the slide bar slot, slide bar can be with Slidably reciprocate along slide bar slot, slide bar be pierced by one end of slide bar slot be threadedly coupled one it is anti-raise one's hat, thus prevent slide bar from Deviate from slide bar slot.

After No. three cylinders start, the output ends of No. three cylinders can pick up and down, thus gone up and down back and forth with moving slide-bar, it is sliding Bar can slidably reciprocate in slide bar slot, and then driving lever is driven to overturn back and forth；During claw hook pulls out steel wire, driving lever begins It is tightly attached on the output shaft of No. two cylinders eventually, so that when steel wire is thoroughly pulled out out of tire lip, due to elastic force toward two When being wound on the output shaft of number cylinder, driving lever can together with the output shaft of No. two cylinders by it is simultaneously wound live, at this time due to steel wire It has been cut off, is no longer annular, it, can be by steel wire from No. two cylinders so when the driving levers of No. three cylinders driving at this time downwardly turn over Output shaft on shut down, it is convenient and efficient, avoid steel wire from influencing being carried out continuously of work of reeling off raw silk from cocoons, guarantee is reeled off raw silk from cocoons the smooth of work, from And improve production efficiency；And in order to prevent driving lever top to claw hook the damage that both causes, one end of driving lever and No. two cylinders The side-lower of output shaft is affixed, in claw hook no longer approximately the same plane, so can will be on No. two cylinder output shafts and claw hook Steel wire is removed, and will not mutually be hindered with claw hook, guarantees the work that antiwind structure can be stable, and then guarantee spinning unit energy The operation of enough stability and high efficiencies.

Specifically, driving lever 34 includes the body of rod 340, driving lever cambered surface 342 and ball 343；Body of rod one end is connect with airframe hinge, The other end has opened up a driving lever cambered surface, so that driving lever can just fit with the surface of No. two cylinder output shafts, to protect Card driving lever can pass through in the gap between steel wire and No. two cylinder output shafts always, convenient for removing steel wire；In driving lever arc It is mounted with multiple balls on face, so that the contact between driving lever and No. two cylinder output shafts is more gentle, slows down the two Between abrasion, extend service life.

In order to facilitate the work of spinning unit, it is mounted with that a location structure, the location structure include positioning on the rack Frame 41, positioning plate 42, fourth drive member 43 and limit assembly；Posting is mounted in rack 1, so that when the steel wire in tire lip After being cut off device cutting, tire can be transported in posting, and state in a vertical shape is limited by posting, prevents tire toward two It rolls tiltedly, spinning unit is separately mounted to the two sides of posting, convenient for extracting steel wire；It is opened on the two sides of posting point Do not opened up a claw hook through-hole 411, convenient for passing through for claw hook, facilitate claw hook by steel wire extraction tire body made of rubber Without by claw hook through-hole, the separation of steel wire and tire is completed；Positioning board slot 412 is opened up on posting, positioning plate is It is mounted in positioning board slot, it can be concordant with the holding of the bottom surface inside posting；Fourth drive member is the cylinder bought in the market, Hereinafter referred to as No. four cylinders, this is the prior art, therefore this will not be repeated here；No. four bolt cylinders are connected to a mounting plate On, which is welded on posting, positioned at the lower section of posting, the lower surface phase of the output end and positioning plate of No. four cylinders Even, positioning plate is allowed to get off pick-up and down in the driving of No. four cylinders, to drive the tire in posting to pick up and down.

Specifically, positioning plate 42 includes upper plate 421, lower plate 422 and locating piece 423；It is fixed when No. four cylinders are inactive When in the plate insertion positioning board slot of position, upper plate is just concordant with the bottom surface of posting, convenient for the movement of tire；Lower plate and No. four The output end of cylinder is connected, and can move back and forth relative to upper plate；Locating piece is mounted on lower plate, is opened up on upper plate Corresponding with locating piece piece of slot 424；When No. four cylinders start, can first driving lower plate block rise so that locating piece from It is pierced by block slot, tire is located between two locating pieces, prevents tire from moving in lifting process；Instantly plate and upper plate After block contact, that is, it will drive plate rising, so that the tire being placed on plate can be with the rising of upper plate And rise.

Specifically, limit assembly includes limit plate 44, the 5th actuator 45 and limit channels 413；Limit channels are provided with On posting, limit plate is mounted in limit channels, can be slidably reciprocated along limit channels；5th actuator is bolted On the outer surface of posting side plate, output end is bolted with limit plate, so that limit plate can be in the 5th driving It slidably reciprocates under the driving of part；5th actuator is the rodless cylinder bought in the market, hereinafter referred to as No. five cylinders, this is The prior art, therefore this will not be repeated here.

After tire is fallen into posting, i.e., it can be limited plate and block, to play the position-limiting action of tire；At this time again Start No. two cylinders, claw hook can pass through claw hook through-hole and be placed exactly in wheel into posting under the driving of No. two cylinders In tire；Restart No. four cylinders at this time, positioning plate can rise under the driving of No. four cylinders, so that tire be pushed to rise to pumping On silk station；No. two cylinders of reverse starting again at this time, claw hook i.e. can under the driving of No. two cylinders toward moving outside posting, and by In the rising of tire, claw hook, which is displaced outwardly, at this time can catch on tire lip, so that the steel wire in tire lip is pulled, and tire sheet Body has then stayed in posting, completes the separation of steel wire and tire, and tire is due to being made of rubber material, after extraction steel wire still It is old to reply shape；No. four cylinders of reverse starting again at this time, positioning plate can decline under the driving of cylinder, to drive tire Decline；Restart No. five cylinders at this time, limit plate i.e. can be under the driving of No. five cylinders toward moving outside posting, and due to positioning The bottom surface of frame is inclined to be opened up, so tire directly can roll along bottom surface, it is convenient and efficient.

Specifically, crushing device includes broken frame 51, breaker roll 52 and driving structure；Broken frame is bolted to bracket On 511, also it is bolted with posting；A feed openings 512 are opened up on broken frame, which is connected with posting It is logical, so that the tire in posting can be rolled directly along inclined posting bottom surface, and entered by feed openings In broken frame, it is not necessarily to transfer, conveniently moving；Breaker roll is mounted on broken frame bottom, connect with broken frame bearing, can be relative to Broken frame carrys out back rotation；The breaker roll includes left breaker roll 521 and right breaker roll 522, and the two can drive in being symmetrically installed It is rotated towards each other under the driving of structure, it is broken so as to tear the tire fallen into broken frame, reach preferable crushing effect； Preferably, broken portion 520 has been opened up on left breaker roll and right breaker roll, the broken portion is screw thread in the present embodiment, so that broken Broken roller can play better crushing effect；Wherein, the screw thread on left breaker roll opens up in the counterclockwise direction, on right breaker roll Screw thread opens up along clockwise direction, and the screw thread on the breaker roll of left and right extends from middle part to two sides, and left breaker roll is driving It is rotated clockwise under the driving of structure, right breaker roll rotates counterclockwise under the driving of driving structure, so that broken Roller can pull tire toward four direction, play better crushing effect；In other embodiments, screw thread can also be replaced For crushing teeth or other component.

Specifically, driving structure includes driving gear 53, driven gear 54 and the 6th actuator 56；Pacify on bracket 511 A motor rack 55 is filled, the 6th actuator is bolted on the motor rack；6th actuator is the electricity bought in the market Machine, hereinafter referred to as No.1 motor, this is the prior art, therefore this will not be repeated here；The roll shaft of left and right breaker roll is pierced by broken Frame, the output shaft of No.1 motor are connected with the roll shaft of left breaker roll, enable left breaker roll suitable under the driving of No.1 motor Hour hands rotation；Driving gear key is connected on the roll shaft of left breaker roll, and driven gear is keyed on the roll shaft of right breaker roll, main Moving gear and driven gear are intermeshed, so that when being rotated clockwise under driving of the left breaker roll in No.1 motor, it is right Breaker roll can rotate counterclockwise under the transmission effect of driving gear and driven gear, and then tire be torn broken.

Specifically, being mounted with that a conveyer belt 58, the broken tire of the roller that is broken can be fallen in the lower section of broken frame 51 On conveyer belt, to be transported on subsequent process equipment by conveyer belt；Conveyer belt is mounted on conveying axis, and conveying axis then axis It holds and is connected on transfer gantry 59, be mounted with that the 7th actuator 57, the 7th actuator are to purchase in the market on transfer gantry The motor bought, hereinafter referred to as No. two motors, this is the prior art, therefore this will not be repeated here；The output shaft of No. two motors with it is defeated Axis is sent to be connected, from enabling conveying axis being rotated by No. two motors to realize so that driving conveying belt is mobile to broken The conveying of tire afterwards.

Embodiment 2:

As shown in figure 14, the present embodiment the difference from embodiment 1 is that, be mounted with that a conveying device, the conveying device include Conveying roller 61, the 8th actuator 62 and slide construction, slide construction include sliding strut 12, sliding rack 13 and slide roller 14；It is defeated It send roller bearing connection on the rack, back rotation can be carried out relative to rack, the 8th actuator is mounted on the rack, the 8th driving Part is the motor bought in the market, hereinafter referred to as No. three motors, this is the prior art, therefore this will not be repeated here；No. three motors It is connected by transmission chain with conveying roller, so that No. three motors can drive conveying roller to carry out back rotation, and then will be placed on defeated The tire on roller is sent to be transported on cutting station；Sliding support welds on the rack, and sliding rack is bolted on sliding strut, Slide roller is mounted on sliding rack, is connect with sliding rack bearing, so that slide roller can carry out back rotation relative to sliding rack, Due to the inclined installation of sliding rack, so can voluntarily glide under gravity after tire is fallen in slide roller again, nothing It needs actuator to drive, has saved equipment cost；Tire just slides into posting 41, and a positioning gear has been welded on posting Plate 413, positioning baffle state installation in a vertical shape, enables tire to slide more easily into posting, facilitates and carry out work of reeling off raw silk from cocoons Make.

Claims (7)

1. a kind of novel waste and old tire recycling processing system, including rack (1), the disconnecting device being set on the rack (1), with The spinning unit that the disconnecting device matches and the crushing device matched with the spinning unit；It is characterized by: described Spinning unit includes that the claw hook (31) of sweeping action, the antiwind structure that matches with the claw hook (31) and can be used for so that wheel Tire is in the location structure to reel off raw silk from cocoons on station；The rack (1) is equipped with the conveying device for transport tire；The conveying device Including can the conveying roller (61) of sweeping action, the 8th actuator (62) for driving the conveying roller (61) sweeping action and with The slide construction that the conveying roller (61) matches.

2. novel waste and old tire recycling processing system according to claim 1, it is characterised in that: the slide construction includes Sliding strut (12) on the rack (1), the sliding rack (13) being detachably connected with sliding strut (12) and with The slide roller (14) that the sliding rack (13) is rotatably assorted.

3. novel waste and old tire recycling processing system according to claim 2, it is characterised in that: the location structure includes The posting (41) that is detachably connected with the rack (1), can sweeping action positioning plate (42), for driving the positioning plate (42) fourth drive member (43) of sweeping action and the limit assembly for being fixed on tire in the posting (41).

4. novel waste and old tire recycling processing system according to claim 3, it is characterised in that: posting (41) packet Include the positioning board slot (412) matched with the positioning plate (42), the claw hook through-hole (411) that is matched with the claw hook (31) and In the positioning baffle (413) being vertically arranged.

5. novel waste and old tire recycling processing system according to claim 4, it is characterised in that: positioning plate (42) packet Include the upper plate (421) matched with positioning board slot (412), the lower plate (422) matched with the upper plate (421) And it is set to the locating piece (423) on the lower plate (422).

6. novel waste and old tire recycling processing system according to claim 5, it is characterised in that: the disconnecting device includes Can the cutting member (21) of sweeping action, the first actuator (22) for driving the cutting member (21) sweeping action, for connecting The synchronous plate (23) and the compressing structure for fixing tire for connecing the cutting member (21) and first actuator (22).

7. novel waste and old tire recycling processing system according to claim 6, it is characterised in that: cutting member (21) packet The auxiliary cutter head (212) for including the upper cutter head (211) being detachably connected with the synchronous plate (23), being set on the upper cutter head (211) And the lower cutter head (213) matched with the upper cutter head (211).