CN103331923A - Two-section molding machine of passenger radial tire and molding method thereof - Google Patents
Two-section molding machine of passenger radial tire and molding method thereof Download PDFInfo
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- CN103331923A CN103331923A CN201310250824XA CN201310250824A CN103331923A CN 103331923 A CN103331923 A CN 103331923A CN 201310250824X A CN201310250824X A CN 201310250824XA CN 201310250824 A CN201310250824 A CN 201310250824A CN 103331923 A CN103331923 A CN 103331923A
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Abstract
The invention discloses a two-section molding machine of a passenger radial tire and a molding method thereof. The molding machine comprises a main machine and a feed frame, wherein the main machine comprises a base; a laminating device, a transfer ring and a calibrator are orderly arranged along the base; the laminating device comprises a laminating machine; two sets of belted layer drum mechanisms capable of rotating along the central line of the laminating machine are symmetrically arranged at the center of the laminating machine; the output shaft of each belted layer drum mechanism is provided with a belted layer drum; the calibrator comprises a main machine case; two sets of shaping drum mechanisms capable of rotating along the central line of the main machine case are symmetrically arranged at the center of the main machine case; the output shaft of each shaping drum mechanism is provided with a shaping drum. The molding machine adopts a dual-station structure layout on a laminating and calibrating system; layout of a feeding system is correspondingly arranged, so that the work time of each station is optimized to the maximal extent; the work efficiency of the two-section molding machine is obviously improved; meanwhile, the automatic degree of the equipment is improved; the labor intensity is reduced.
Description
Technical field
The present invention relates to a kind of twice method make-up machine of half steel and forming method thereof of making riding radial-ply tyre, the applying in its second stage building machine, shaping system all adopt the topology layout of double, belong to the rubber manufacturing machinery field.
Background technology
In the prior art, twice method make-up machine of half steel adopted in the production of riding radial-ply tyre usually, namely comprises first stage building machine and second stage building machine.On the first stage building machine, according to the first stage building technological requirement, by feeding system inner liner, cord are transported on the laminating drum, after tyre bead and anti-package are just wrapped, detained to finger-type, by the order of technological requirement tyre elements such as sidewall being fitted puts in place again, finishes the moulding of one section matrix body tube of radial-ply tyre after abundant pressing.Then this matrix body tube is placed on the setting drum of second stage building machine, process sequence according to second stage building, finish the applying of tyre elements such as belt, cap strip, tyre surface at belt drum, form belt layer tread package, this assembly is delivered on the setting drum of second stage building machine through transmission ring, be combined with the matrix body tube of finishing pre-setting, through the press-roller device roll extrusion, finish the moulding of radial tyre blank.
The wherein topology layout of second stage building machine, mainly by main frame typing, and the attaching process of subsidiary engine form.Above-mentioned main frame setting process is the transmission of single station mainframe box, finish at single setting drum and to adorn one section matrix body tube, tyre bead locking positioning, inflation, pre-setting, applying belt layer tread package, then by the press-roller device roll extrusion, form fetus, unload tire through artificial or automechanism, finish the second stage building operation.Above-mentioned attaching process forms belt layer tread package for fit tyre elements such as 1# belt, 2# belt, cap strip, tyre surface successively on single laminating drum.Each step of above operation carries out successively, and incompressible, and this single setting drum/laminating drum becomes the subject matter that influences the second stage building engine efficiency.
For improving the second stage building engine efficiency, belt drum can adopt two laminating drum double slew gears that diameter is identical in the prior art, its attaching process is at the 1# station, 1# rouses fit successively 1# belt, 2# belt, return turnback then and enter the 2# station, fit successively cap strip, tyre surface form belt layer tread package again, by the transmission ring clamping and be delivered to shaping process.Two laminating drums come and go revolution, alternation at 1# station, 2# station 180 degree.Though the more preceding a kind of technology of said structure increases in applying efficient, since unbalanced in the time that 1# station, 2# station are finished the work, applying efficient influenced.
Summary of the invention
Riding radial-ply tyre second stage building machine of the present invention and forming method thereof, its purpose is to solve above-mentioned problems of the prior art and to the topology layout of fitting, shaping system all adopts double, and the layout of relative set feeding system, the working time of each station is got the greatest degree of optimization, obviously promoted the operating efficiency of second stage building machine, improve automation degree of equipment simultaneously, reduced labour intensity.
For achieving the above object, described riding radial-ply tyre second stage building machine mainly includes:
Main frame and feed frame, main frame has base, is disposed with laminating apparatus, transmission ring, calibrator along base, and transmission ring can slide along base, and the calibrator place is provided with press-roller device;
Feed frame matches with laminating apparatus, has belt feed frame, cap strip feed frame, tyre surface feed frame.
The difference with the prior art part is that described calibrator comprises mainframe box, and center symmetry installation two covers can be along the rotating setting drum of mainframe box center line mechanism on mainframe box, and the output shaft of each setting drum mechanism is installed a setting drum;
Described laminating apparatus comprises make-up machine, and the center symmetry is installed two covers and can be roused mechanism along the rotating belt of make-up machine center line on make-up machine, and the output shaft of each belt drum mechanism is installed belt drum;
Wherein, at least one setting drum, transmission ring and at least one belt drum have same central axis.
As above-mentioned basic scheme, form belt layer tread package at the laminating apparatus place, transmission ring accesses this assembly and is delivered to calibrator, forms fetus at the calibrator place.Wherein, the bonding process of tyre elements such as belt, cap strip, tyre surface carries out at two belt drums simultaneously, applying and the roll extrusion of the installation of one section matrix body tube, tyre bead locking positioning, inflation, pre-setting, belt layer tread package, unload the tire operation and carry out at two setting drums simultaneously, thereby obviously promoted the operating efficiency of equipment.
Further optimize the layout of this equipment, described two setting drums are positioned at the same side of mainframe box, and front and back distribute, and do 180 degree revolutions and realize mutually alternately station in vertical plane.
The setting drum that is in the place ahead station is finished the installation of one section matrix body tube, tyre bead locking positioning, inflation, pre-setting, is accessed belt layer tread package and applying from transmission ring, in vertical plane, return turnback around the center line of mainframe box then and enter the rear station, finish roll extrusion, unload the tire operation, station, rear station 180 degree like this come and go revolution, alternation to two setting drums forwardly.
Further optimize the layout of this equipment, described two setting drums are distributed in the left and right sides of mainframe box, do 180 degree revolutions and realize mutually alternately station in horizontal plane.
Further optimize the layout of this equipment, described two belt drums are distributed in the left and right sides of make-up machine, do 180 degree revolutions and realize mutually alternately station in horizontal plane or vertical plane.
In order to be evenly distributed in the working time of each bonding process on two belts drum, to fit most effectively thereby make, described feed frame comprises 1# belt feed frame, 2# belt feed frame, cap strip feed frame, tyre surface feed frame.Wherein 1# belt feed frame, tyre surface feed frame match with the belt drum at one of them applying station place, are used for the 1# belt in the tyre element and tyre surface are flowed to the belt drum that is in this station; 2# belt feed frame, cap strip feed frame match with the belt drum at another applying station place, are used for the 2# belt in the tyre element and cap strip are flowed to the belt drum that is in this station.
As above-mentioned scheme, concrete operation is as follows: a belt rouses the applying of finishing the 1# belt at first therein, then this belt drum in horizontal plane or vertical plane after the make-up machine center line returns turnback and another belt drum transposition, finish the applying of 2# belt, cap strip at another station, thereafter return again turnback when entering applying 1# belt again the station at place finish the applying of tyre surface, thereby form belt layer tread package.Two belt drum 180 degree like this come and go revolution, alternation.
In order to shorten the time of reloading, improve feed efficient, described 1# belt feed frame, 2# belt feed frame are provided with two belt feed chassis.
In order to improve automaticity, reduce labour intensity, the tire unloader that the fetus that can be provided for having formed at the calibrator place on the riding radial-ply tyre second stage building machine of the present invention takes out.
Described tire unloader includes and unloads tread ring and fetus conveying device, unloads tread ring gripping fetus and being placed on the fetus conveying device from the setting drum, so as with the fetus automatic transport to next station.
Can also be provided with on the riding radial-ply tyre second stage building machine of the present invention for matrix body tube that will form at the first stage building machine and be installed to manipulator on the calibrator automatically.
In conjunction with the architecture advances of above-mentioned riding radial-ply tyre second stage building machine, the present invention has realized the prioritization scheme of following forming method simultaneously:
Make-up machine includes main frame and feed frame, main frame has base, be disposed with applying station, transmission ring, typing station along base, establish the feed station near the applying station, the belt layer tread package that transmission ring will form at applying station place is delivered to the typing station;
Feed station place is provided with 1# belt feed frame, 2# belt feed frame, cap strip feed frame, tyre surface feed frame, is used for carrying 1# belt, 2# belt, cap strip, tyre surface to the applying station;
Applying station place is provided with the belt drum, finishes the bonding process of 1# belt, 2# belt, cap strip, tyre surface, forms belt layer tread package;
Typing station place is provided with setting drum, rolling device, finish installation, tyre bead locking positioning, inflation, pre-setting, the belt layer tread package of one section matrix body tube applying, roll extrusion, unload the tire operation, form fetus;
Be with the difference of prior art, described typing station comprises 1# typing station, the 2# station of finalizing the design, each station place all arranges a setting drum, finish installation, tyre bead locking positioning, inflation, the pre-setting of one section matrix body tube, the bonding process of belt layer tread package at 1# typing station, finish roll extrusion, unload the tire operation at 2# typing station, two setting drums are realized mutually alternately station by gyration;
Described applying station comprises 1# applying station, 2# applying station, each station place all arranges belt drum, finish the bonding process of 1# belt, tyre surface at 1# applying station, finish the bonding process of 2# belt, cap strip at 2# applying station, two belt drums are realized mutually alternately station by gyration.
Content to sum up, riding radial-ply tyre second stage building machine of the present invention and forming method thereof have the following advantages:
1, applying, shaping system all adopt the double structure, have finished the operation of finishing at single drum in the prior art at two drums simultaneously, have significantly promoted operating efficiency.
2, employing and the feeding system that double applying system matches make the working time of each bonding process that distributes on the double obtain optimizing equilibrium, and then have improved applying efficient.
3, each belt feed frame has two feed chassis, has shortened the time of reloading, and has improved feed efficient.
4, tire structure and one section automatic mounting structure of matrix body tube are unloaded in employing automatically, have improved automaticity, have reduced labour intensity.
Description of drawings
Now the present invention is described further by reference to the accompanying drawings:
Fig. 1 is the layout of described riding radial-ply tyre second stage building machine embodiment 1
Fig. 2 is the structural representation of described riding radial-ply tyre second stage building machine embodiment 1
Fig. 3 is the side view of 1# belt feed frame, tyre surface feed frame among the embodiment 1
Fig. 4 is the side view of 2# belt feed frame, cap strip feed frame among the embodiment 1
Fig. 5 is the layout of described riding radial-ply tyre second stage building machine embodiment 2
Fig. 6 is the layout of described riding radial-ply tyre second stage building machine embodiment 3
Extremely shown in Figure 6 as Fig. 1,1-base, 2-laminating apparatus, the 21-make-up machine, 211-make-up machine center line, 22-belt drum mechanism output shaft, 23-belt drum, the vertical median plane of 231-belt drum, 3-transmission ring, the 4-calibrator, 41-mainframe box, 411-mainframe box center line, 42 setting drum mechanism output shafts, 43-setting drum, the vertical median plane of 431-setting drum, the 5-press-roller device, 6-1# belt feed frame, 61-1# belt feed chassis, 7-2# belt feed frame, 71-2# belt feed chassis, 8-tyre surface feed frame, 9-cap strip feed frame, the 10-tire unloader, 101-unloads tread ring, 102-fetus conveying device, the 11-manipulator, the 12-central axis
The specific embodiment
Laminating apparatus (2) comprises make-up machine (21), in make-up machine (21) upper edge center line (211) symmetry two covers are installed and in horizontal plane, are done the rotating belt drum of 180 degree mechanism around center line (211), each belt drum mechanism's output shaft (22) is gone up a belt drum (23) is installed, belt drum (23) is distributed in the left and right sides of make-up machine (21), realizes mutually alternately station by do 180 degree revolutions in horizontal plane.
Feed frame comprises 1# belt feed frame (6), 2# belt feed frame (7), tyre surface feed frame (8), cap strip feed frame (9), wherein 1# belt feed frame (6), tyre surface feed frame (8) are positioned at the rear side of the belt vertical median plane of drum (231) of right side station, are used for belt drum (23) conveying 1# belt, the tyre surface of station to the right.As shown in Figure 3,1# belt feed frame (6), the vertical distribution of tyre surface feed frame (8), during applying 1# belt, the circumferential bottom of the front end of 1# belt feed frame (6) and belt drum (23) is tangent; During the applying tyre surface, the circumferential top of the front end of tyre surface feed frame (8) and belt drum (23) is tangent.1# belt feed frame (6) comprises two feed chassis (61), and arrange front and back, and after the material volume in the feed chassis (61) used up, another feed chassis (61) continued feed, thereby realizes uninterrupted feed.
2# belt feed frame (7), cap strip feed frame (9) are positioned at the rear side of the belt vertical median plane of drum (231) of left side station, are used for belt drum (23) conveying 2# belt, the cap strip of station to the left.As shown in Figure 4,2# belt feed frame (7), the vertical distribution of cap strip feed frame (9), during applying 2# belt, the circumferential bottom of the front end of 2# belt feed frame (7) and belt drum (23) is tangent; During winding cap strip, the circumferential top of the front end of cap strip feed frame (9) and belt drum (23) is tangent.2# belt feed frame (7) comprises two feed chassis (71), and arrange front and back, and after the material volume in the feed chassis (71) used up, another feed chassis (71) continued feed, thereby realizes uninterrupted feed.
Calibrator (4) comprises mainframe box (41), in mainframe box (41) upper edge center line (411) symmetry two covers are installed and in vertical plane, are done the rotating setting drum of 180 degree mechanism around center line (411), each setting drum mechanism output shaft (42) is gone up a setting drum (43) is installed, setting drum (43) is distributed in the left side of mainframe box (41), front and back distribute, and realize mutual alternately station by do 180 degree revolutions in vertical plane.The setting drum (43) that is positioned at the place ahead station is finished the installation of one section matrix body tube, tyre bead locking positioning, inflation, pre-setting, is accessed belt layer tread package and applying from transmission ring, and the setting drum (43) that is positioned at the rear station is finished roll extrusion, unloaded the tire operation.
The front left side of the place ahead station setting drum (43) is provided with manipulator (11), and the matrix body tube that is used for forming on the first stage building machine is installed on the place ahead station setting drum (43) automatically.Press-roller device (5) is positioned at the rear side of the vertical median plane of rear station setting drum (431).The left side that is in the setting drum (43) of rear station is provided with tire unloader (10), and tire unloader (10) comprises and unload tread ring (101), fetus conveying device (102), is used for gripping fetus and be placed on the fetus conveying device (102) and be transported to next station.
As shown in Figure 1, the place ahead station setting drum (43), transmission ring (3), right side station belt drum (23) have same central axis (12).
Applying station in the left side, main technique step order is as follows:
1) belt of right side station drum (23) accesses the 1# belt that 1# belt feed frame (6) is carried, and it is fitted on the bulging face;
2) belt of right side station drum (23) is done 180 degree revolutions around center line (211) in horizontal plane, enters the left side station; This belt drum (23) accesses the 2# belt that 2# belt feed frame (7) is carried, and it is fitted on the bulging face; Access the cap strip that cap strip feed frame (9) is carried then, it is fitted on the bulging face;
3) the belt drum (23) of left side station is done 180 degree revolutions around center line (211) in horizontal plane, enters the right side station; Access the tyre surface that tyre surface feed frame (8) is carried then, it is fitted on the bulging face, form belt layer tread package; Transmission ring (3) moves to this station and accesses belt layer tread package, and it is delivered to the typing station;
4) belt of right side station drum (23) is turned back to the left side station and repeats above-mentioned operation;
5) two belt drums (23) come and go alternation by above order.
Typing station on the right side, main technique step order is as follows:
1) manipulator (11) is installed to the matrix body tube that forms on the first stage building machine on the setting drum (43) of the place ahead station automatically, and finishes bead lock, inflation, pre-setting;
2) belt layer tread package that the applying station formed on the left of transmission ring (3) was clamped in enters into the place ahead station setting drum (43) along the slide rail of base (1);
3) forwards fill high pressure and typing in the matrix body tube of pre-setting on the station setting drum (43), transmission ring this moment (3) is placed on belt layer tread package on the matrix body tube after the typing;
4) setting drum of the place ahead station (43) is done vertical revolution around center line (411) in vertical plane, enters the rear station; Press-roller device (5) is implemented roll extrusion to it, forms fetus;
5) unload tread ring (101) and enter into rear station assembly drum (43) and access fetus, be placed into then on the fetus conveying device (102) and be transported to next station;
6) rear station assembly drum (43) is turned back to the place ahead station and repeats above-mentioned operation;
7) two assembly drums (43) come and go alternation by above order.
Embodiment 2, and as shown in Figure 5, two setting drums (43) of calibrator (4) are distributed in the left and right sides of mainframe box (41), realize mutually alternately station by do 180 degree revolutions in horizontal plane.
Embodiment 3, and as shown in Figure 6, two belt drums (23) of laminating apparatus (2) are distributed in the left and right sides of make-up machine (21), realize mutually alternately station by do 180 degree revolutions in vertical plane.
Claims (9)
1. riding radial-ply tyre second stage building machine, include main frame and feed frame, main frame has base (1), be disposed with laminating apparatus (2), transmission ring (3), calibrator (4) along base (1), transmission ring (3) can slide along base (1), calibrator (4) locates to be provided with press-roller device (5)
Feed frame matches with laminating apparatus (2), carries each adhesive parts to it,
It is characterized in that: described calibrator (4) comprises mainframe box (41), and going up center symmetry installation two covers at mainframe box (41) can be along the rotating setting drum of mainframe box center line (411) mechanism, and each setting drum mechanism output shaft (42) is installed setting drum (43),
Described laminating apparatus (2) comprises make-up machine (21), and going up center symmetry installation two covers at make-up machine (21) can be along the rotating belt drum of make-up machine center line (211) mechanism, and each belt drum mechanism's output shaft (22) is installed a belt and roused (23),
Wherein, at least one setting drum (43), transmission ring (3) and at least one belt drum (23) have same central axis (12).
2. riding radial-ply tyre second stage building machine according to claim 1 is characterized in that described two setting drums (43) are positioned at the same side of mainframe box (41), and front and back distribute, and does 180 degree revolutions and realize mutually alternately station in vertical plane.
3. according to the described riding radial-ply tyre second stage building machine of claim 1, it is characterized in that described two setting drums (43) are distributed in the left and right sides of mainframe box (41), in horizontal plane, do 180 degree revolutions and realize mutually alternately station.
4. according to the described riding radial-ply tyre second stage building machine of claim 1, it is characterized in that described two belts drums (23) are distributed in the left and right sides of make-up machine (21), in horizontal plane or vertical plane, do 180 degree revolutions and realize mutually alternately station.
5. according to the described riding radial-ply tyre second stage building machine of claim 1, it is characterized in that described feed frame comprises 1# belt feed frame (6), 2# belt feed frame (7), cap strip feed frame (9), tyre surface feed frame (8), wherein 1# belt feed frame, tyre surface feed frame match with the belt drum (23) at one of them applying station place, and 2# belt feed frame, cap strip feed frame match with the belt drum (23) at another applying station place.
6. according to the described riding radial-ply tyre second stage building machine of claim 5, it is characterized in that being provided with two belt feed chassis (61,71) on described 1# belt feed frame, the 2# belt feed frame.
7. according to the described riding radial-ply tyre second stage building machine of claim 1, it is characterized in that described make-up machine is provided with the tire unloader (10) that takes out for the fetus that will be forms at the calibrator place, described tire unloader (10) comprises and unloads tread ring (101) and fetus conveying device (102).
8. according to the described riding radial-ply tyre second stage building machine of claim 1, it is characterized in that described make-up machine is provided with for will be being installed to manipulator (11) on the calibrator (4) at the matrix body tube that the first stage building machine forms.
9. riding radial-ply tyre second stage building method, make-up machine includes main frame and feed frame, main frame has base, be disposed with applying station, transmission ring, typing station along base, establish the feed station near the applying station, the belt layer tread package that transmission ring will form at applying station place is delivered to the typing station
Feed station place is provided with 1# belt feed frame, 2# belt feed frame, cap strip feed frame, tyre surface feed frame, is used for carrying 1# belt, 2# belt, cap strip, tyre surface to the applying station,
Applying station place is provided with the belt drum, finishes the bonding process of 1# belt, 2# belt, cap strip, tyre surface, forms belt layer tread package,
Typing station place is provided with setting drum, rolling device, finish installation, tyre bead locking positioning, inflation, pre-setting, the belt layer tread package of one section matrix body tube applying, roll extrusion, unload the tire operation, form fetus,
It is characterized in that: described typing station comprises 1# typing station, the 2# station of finalizing the design, each station place all arranges a setting drum, finish installation, tyre bead locking positioning, inflation, the pre-setting of one section matrix body tube, the bonding process of belt layer tread package at 1# typing station, finish roll extrusion, unload the tire operation at 2# typing station simultaneously, two setting drums are realized mutually alternately station by gyration
Described applying station comprises 1# applying station, 2# applying station, each station place all arranges belt drum, finish the bonding process of 1# belt, tyre surface at 1# applying station, finish the bonding process of 2# belt, cap strip simultaneously at 2# applying station, two belt drums are realized mutually alternately station by gyration.
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| CN201310250824.XA CN103331923B (en) | 2013-06-24 | 2013-06-24 | Two-section molding machine of passenger radial tire and molding method thereof |
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| CN201310250824.XA CN103331923B (en) | 2013-06-24 | 2013-06-24 | Two-section molding machine of passenger radial tire and molding method thereof |
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| CN103331923B CN103331923B (en) | 2015-04-01 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175584A (en) * | 2014-08-10 | 2014-12-03 | 青岛双星橡塑机械有限公司 | Two-stage four-drum forming machine for all-steel truck radical tires |
| CN105437578A (en) * | 2014-09-26 | 2016-03-30 | 昆山市科玲精密模具有限公司 | Forming machine for preparation of tyres |
| CN107031088A (en) * | 2017-05-31 | 2017-08-11 | 三角轮胎股份有限公司 | The method that material is changed using turntable automatically in tyre building machine |
| CN107553947A (en) * | 2017-09-27 | 2018-01-09 | 贵州轮胎股份有限公司 | Multi-layer cord fabric tire shaping apparatus and method |
| CN108928024A (en) * | 2018-07-25 | 2018-12-04 | 联亚智能科技（苏州）有限公司 | A kind of Wrapping formed device group of tread package and tire shaping apparatus |
| CN111113724A (en) * | 2020-02-23 | 2020-05-08 | 杨松 | Operation method of waste heavy-duty tire casing crushing robot pre-finishing system |
| CN111251636A (en) * | 2020-01-21 | 2020-06-09 | 厦门洪海机械有限公司 | Main unit of tire forming machine of electric vehicle or motorcycle |
| CN111873505A (en) * | 2020-07-23 | 2020-11-03 | 北京敬业机械设备有限公司 | Single-person high-efficiency flat-drum laminating secondary method forming machine for semisteel radial tire |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175584A (en) * | 2014-08-10 | 2014-12-03 | 青岛双星橡塑机械有限公司 | Two-stage four-drum forming machine for all-steel truck radical tires |
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| CN105437578B (en) * | 2014-09-26 | 2018-02-23 | 昆山市科玲精密模具有限公司 | One kind prepares tire forming machine |
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| CN107553947A (en) * | 2017-09-27 | 2018-01-09 | 贵州轮胎股份有限公司 | Multi-layer cord fabric tire shaping apparatus and method |
| CN108928024A (en) * | 2018-07-25 | 2018-12-04 | 联亚智能科技（苏州）有限公司 | A kind of Wrapping formed device group of tread package and tire shaping apparatus |
| CN111251636A (en) * | 2020-01-21 | 2020-06-09 | 厦门洪海机械有限公司 | Main unit of tire forming machine of electric vehicle or motorcycle |
| CN111113724A (en) * | 2020-02-23 | 2020-05-08 | 杨松 | Operation method of waste heavy-duty tire casing crushing robot pre-finishing system |
| CN111113724B (en) * | 2020-02-23 | 2022-02-25 | 杨松 | Operation method of waste heavy-duty tire casing crushing robot pre-finishing system |
| CN111873505A (en) * | 2020-07-23 | 2020-11-03 | 北京敬业机械设备有限公司 | Single-person high-efficiency flat-drum laminating secondary method forming machine for semisteel radial tire |
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