CN104438982A - Improved automatic bagged spring production device - Google Patents
Improved automatic bagged spring production device Download PDFInfo
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- CN104438982A CN104438982A CN201310446396.8A CN201310446396A CN104438982A CN 104438982 A CN104438982 A CN 104438982A CN 201310446396 A CN201310446396 A CN 201310446396A CN 104438982 A CN104438982 A CN 104438982A
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- spring
- guide
- reductor
- servomotor
- cutter
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Abstract
The invention relates to the technical field of mattress spring production, in particular to a spring production device and discloses an improved automatic bagged spring production device. The device is composed of a spring firing and conveying mechanism, a spring conveying and bagging mechanism and a spring welding and moving mechanism which are connected in sequence. When the device is used, a spring produced through an automatic spring coiling machine is fired and conveyed through the spring firing and conveying mechanism, then enters the spring conveying and bagging mechanism to be bagged, and finally is welded and moved through the spring welding and moving mechanism. The device has the advantages of being simple and reasonable in structure, easy to operate and high in stability, and mechanical stability and working efficiency are improved greatly due to the fact that the device is driven by a servo motor. In use, all components operate fast, movement is accurate, power consumption is low, and multiple defects of existing bagged spring production devices available in China can be overcome.
Description
Technical field
The present invention relates to mattress spring production technical field, particularly a kind of spring production equipment, especially a kind of modified automatic production equipment of bagged springs.
Background technology
Existing domestic bagged-spring production equipment is that this method has with common electric machine and cylinder as main power resources: slow motion and accurate not, mechanical stability difference and the drawback such as power consumption is large.
Summary of the invention
For the weak point existed in the problems referred to above, the invention provides a kind of by driven by servomotor, greatly improve the stability of machinery and the modified type automatic production equipment of bagged springs of operating efficiency.
For achieving the above object, the invention provides a kind of modified automatic production equipment of bagged springs, carried pack device and spring to weld travel mechanism to form by overdo conveying mechanism, spring of the spring connected successively, the spring produced of automatic spring winding machine overdoes through the spring conveying mechanism that overdoes, carries, enter spring conveying pack device again to pack, then carry out welding with mobile through spring welding travel mechanism.
Above-mentioned modified automatic production equipment of bagged springs, wherein, the described spring conveying mechanism that overdoes comprises two groups of chain assemblies and two pieces of installing plates, described chain assemblies comprises chain stay, chain, servomotor, reductor, drive sprocket, driven sprocket, bearing spring plate, push away spring plank, cover plate, spring blocking plate and the assembly that overdoes, described servomotor, described reductor, described drive sprocket, described driven sprocket, described chain and described spring blocking plate are all mounted on described chain stay, described bearing spring plate, describedly push away spring plank and described cover plate is arranged on described chain, the described assembly that overdoes is fixed on described spring blocking plate, described servomotor drives described drive sprocket by described reductor, described driven sprocket and described chain rotate, described bearing spring plate support lives spring, described spring blocking plate blocks the two ends of described spring, the described spring plank that pushes away promotes described spring and is fed forward.
Above-mentioned modified automatic production equipment of bagged springs, wherein, chain assemblies described in two groups symmetrically mode is arranged on two pieces of described installing plates, described installing plate is equipped with two bar shaped through-hole grooves, one group of chain assemblies is fixed on one end of described installing plate, and another organizes chain assemblies according to the height of spring along strip through-hole groove free adjustment.
Above-mentioned modified automatic production equipment of bagged springs, wherein, described spring conveying pack device comprises two groups of Timing Belt assemblies, described Timing Belt assembly comprises upper guard board, lower backplate, front guide, back guide, active synchronization is taken turns, driven synchronizing wheel, tightness of synchronous belt wheel and Timing Belt, described front guide, described back guide, described active synchronization wheel, described tightness of synchronous belt wheel is arranged between described upper guard board and described lower backplate, described driven synchronizing wheel is contained in the end of described back guide, described Timing Belt is taken turns by described active synchronization, described driven synchronizing wheel and described tightness of synchronous belt take turns the outside being looped around described front guide and described back guide, the two ends contact of described spring is between two described Timing Belts.
Above-mentioned modified automatic production equipment of bagged springs, wherein, described Timing Belt assembly is also provided with servomotor, reductor, hexagonal axis and two groups of bevel gears, and described servomotor drives described synchronous clamping residence to state spring by described reductor, described hexagonal axis, described bevel gear and described synchronizing wheel and is fed forward.
Above-mentioned modified automatic production equipment of bagged springs, wherein, Timing Belt assembly described in two groups symmetrically mode is arranged on above dovetail guide, and Timing Belt assembly described in a group is fixed on dovetail guide, and another organizes described Timing Belt assembly according to the height of described spring by screw mandrel free adjustment.
Above-mentioned modified automatic production equipment of bagged springs, wherein, transverse weld structure is also laid with in described Timing Belt assembly rear end, described transverse weld structure mainly comprises cloth folded board support, cloth folded board, lateral ultrasonic wave, laterally weld cutter, cylinder and cloth pressing wheel, described cloth folded board is positioned at outside described back guide, and be arranged on described cloth folded board support, described cloth folded board support installing is on described upper rail, described lateral ultrasonic wave, described transverse direction welds cutter, described cylinder, described cloth pressing wheel is arranged on below described back guide, before described cloth pressing wheel is separately positioned on described lateral ultrasonic wave and described laterally weldering cutter, after, non-woven fabrics both sides are down wrapped up from the gap between described back guide and described cloth folded board, and two fillets of non-woven fabrics are pushed down by cloth pressing wheel described in two groups.
Above-mentioned modified automatic production equipment of bagged springs, wherein, described spring welding travel mechanism comprises one group of longitudinal measure mechanism and one group of spring travel mechanism, and described longitudinal measure mechanism comprises main panel, slide block, servomotor, reductor, camshaft, connecting rod, transverse slat, the axis of guide, longitudinally weldering cutter installing plate, longitudinally device pushed to by weldering cutter, longitudinally weld tool rest, longitudinally weld cutter, linear bearing, thrust spring, longitudinal ultrasonic ripple seat and longitudinal ultrasonic ripple, described servomotor, described reductor, described camshaft is arranged on below described main panel, described main panel both sides are provided with slide block, the described axis of guide is through slide block, described axis of guide one end is connected with the described longitudinal ultrasonic ripple seat being provided with described longitudinal ultrasonic ripple, the other end is connected with described transverse slat, and one end of described connecting rod is connected with described transverse slat, and the other end is connected with described camshaft, described longitudinally weldering cutter installing plate is arranged on the described axis of guide by the described linear bearing on both sides, and described longitudinally weldering tool rest is interspersed with described longitudinal direction and welds cutter, and being arranged on described longitudinally weldering cutter installing plate, described longitudinally weldering cutter is pushed device to and is arranged on below described longitudinally weldering cutter installing plate, and with the cam contact in described camshaft,
Described spring travel mechanism comprises line slideway, servomotor, reductor, crank axle and connecting rod, described line slideway is contained in below described main panel, one end of described connecting rod is connected with described crank axle, the other end is connected with described main panel, described servomotor drives described crank axle to rotate by described reductor, described connecting rod drives described longitudinal measure mechanism to move back and forth along described line slideway, thus completes the movement of spring.
Compared with prior art, the present invention has the following advantages,
The present invention has simple and reasonable, simple to operate, that stability is high advantage, by driven by servomotor, greatly improves stability and the operating efficiency of machinery.In use, the run action of each assembly is fast, and action is accurate, and power consumption is low, can avoid existing domestic bagged-spring production equipment many drawbacks in use.
Accompanying drawing explanation
Fig. 1 is general construction schematic diagram of the present invention;
Fig. 2 is that in the present invention, spring overdoes the schematic diagram of conveying mechanism;
Fig. 3 is another visual angle figure of Fig. 2;
Fig. 4 is the schematic diagram of spring conveying pack device in the present invention;
Fig. 5 is another visual angle figure of Fig. 4;
Fig. 6 is the schematic diagram of spring welding travel mechanism in the present invention;
Fig. 7 is another visual angle figure of Fig. 6.
Detailed description of the invention
As shown in Figures 1 to 7, this modified automatic production equipment of bagged springs is carried pack device II and spring to weld travel mechanism III to form by overdo conveying mechanism I, spring of the spring connected successively, in use, the spring produced of automatic spring winding machine overdoes through the spring conveying mechanism I that overdoes, carries, enter spring conveying pack device II again to pack, then weld with mobile through spring welding travel mechanism III.
The spring that automatic spring winding machine is produced directly enters spring and to overdo conveying mechanism I.The spring conveying mechanism I that overdoes comprises two groups of chain assemblies and two pieces of installing plates 1, two groups of chain assemblies are that symmetry to be arranged on two pieces of installing plates 1, two pieces of installing plates 1 there are two bar shaped through-hole grooves, one group of chain assemblies is fixed on one side of installing plate 1, and another group chain assemblies can along strip through-hole groove free adjustment according to the height of spring.
Two groups of chain assemblies respectively all comprise chain stay 2, chain 3, servomotor 4, reductor 5, drive sprocket 6, driven sprocket 7, bearing spring plate 8, push away spring plank 9, cover plate 10, spring blocking plate 11, overdo assembly 12.Drive sprocket 6 and driven sprocket 7 are arranged on chain stay 2 two ends respectively, and servomotor 4 and reductor 5 connect with drive sprocket 6 and be fixed on chain stay 2.Chain 3 is installed around drive sprocket 6 and driven sprocket 7.Bearing spring plate 8 paperback is on chain 3, and push away on the perpendicular dress chain 3 of spring plank 9, cover plate 10 refills and pushing away on spring plank 9.Spring blocking plate 11 is arranged on chain stay 2 side.The assembly 12 that overdoes is arranged on spring blocking plate 11.Such bearing spring plate 8, push away spring plank 9, cover plate 10 just defines box-like with spring blocking plate 11, spring 13 is just inside.Servomotor 4 drives drive sprocket 6, driven sprocket 7 and chain 3 to rotate by reductor 5, bearing spring plate 8 support lives spring 13, and spring blocking plate 11 blocks spring 13 two ends, pushes away spring plank 9 and promotes spring 13 and be fed forward, when spring 13 overdoes assembly 12, spring 13 just completes and overdoes.
Spring 13 through spring overdo conveying mechanism I end after will enter spring conveying pack device II.Spring conveying pack device comprises two groups of Timing Belt assemblies.Two groups of Timing Belt assemblies all also comprise upper guard board 16, lower backplate 15, front guide 17, back guide 18, active synchronization wheel 19, driven synchronizing wheel 20, tightness of synchronous belt wheel 21, Timing Belt 32, front guide 17, back guide 18, active synchronization wheel 19, tightness of synchronous belt wheel 21 are arranged between upper guard board 16 and lower backplate 15, driven synchronizing wheel 20 is arranged on the tail end of back guide 18, Timing Belt 32 is taken turns 21 with tightness of synchronous belt be looped around outside front guide 17 and back guide 18 by active synchronization wheel 19, driven synchronizing wheel 20, and spring 13 is against between two Timing Belts 32.Servomotor 22, reductor 23, hexagonal axis 25 and two groups of bevel gears 24 are also installed above two groups of Timing Belt assemblies.Servomotor 22 by reductor 23, hexagonal axis 25,
Bevel gear 24 and active synchronization wheel 19 drive Timing Belt 32 to clamp spring 13 and are fed forward.
Two groups of Timing Belt assembly symmetries are arranged on above dovetail guide 14, and one group of Timing Belt assembly is fixed on dovetail guide 14, and another group Timing Belt assembly can pass through screw mandrel 14-3 free adjustment according to the height of spring 13.
Two groups of Timing Belt assembly rear ends are laid with transverse weld structure, mainly comprise cloth folded board support 26, cloth folded board 27, lateral ultrasonic wave 28, laterally weldering cutter 29, cylinder 30, cloth pressing wheel 31, cloth folded board 27 is positioned at outside back guide 18, be arranged on cloth folded board support 26, cloth folded board support 26 is arranged on upper rail 14-1 again, can regulate according to the height of spring 13 with Timing Belt component synchronization.Lateral ultrasonic wave 28, laterally weldering cutter 29, cylinder 30, cloth pressing wheel 31 are arranged on below back guide 18, lateral ultrasonic wave 28 welds cutter 29 with transverse direction and is mounted opposite, lateral ultrasonic wave 28 welds each a pair cloth pressing wheel 31 before and after cutter 29 with horizontal, non-woven fabrics 33 both sides are down wrapped up from the gap between back guide 18 and cloth folded board 27, two fillets are at lateral ultrasonic wave 28 and laterally weld between cutter 29, then push down two fillets of non-woven fabrics 33 by two groups of cloth pressing wheels 31.Cylinder 31 pushes laterally weldering cutter 29 and touches to lateral ultrasonic wave 28, and then cylinder 30 hauls laterally weldering cutter 29 again and playbacks, and completes the transverse weld of a non-woven fabrics.
Spring 13 will enter spring welding travel mechanism III after the end of spring conveying pack device II.
Spring welding travel mechanism III comprises one group of longitudinal measure mechanism and one group of spring travel mechanism.Longitudinal measure mechanism comprises main panel 35, slide block 36, servomotor 37, reductor 38, camshaft 39, connecting rod 40, transverse slat 41, the axis of guide 42, longitudinally weldering cutter installing plate 43, longitudinally weldering cutter push device 44, cylinder 45, longitudinally weldering tool rest 46, longitudinally weldering cutter 47, linear bearing 48, thrust spring 49, longitudinal ultrasonic ripple seat 50, longitudinal ultrasonic ripple 51 to.Servomotor 37, reductor 38, camshaft 39 are arranged on below main panel 35.Slide block 36 is equipped with on main panel 35 both sides, and the axis of guide 42 is through slide block 36, and the axis of guide 42 one end is connected with the longitudinal ultrasonic ripple seat 50 being installed with longitudinal ultrasonic ripple 51, and the other end is connected with transverse slat 41.One end of connecting rod 40 is connected on transverse slat 41, and the other end is connected with camshaft 39.Longitudinally weldering cutter installing plate 43 is installed on the axis of guide 42 by the linear bearing 48 on both sides.Longitudinally weldering tool rest 46 is interspersed with and longitudinally welds cutter 47 and be arranged on above longitudinal weldering cutter installing plate 43.Cylinder 45 is arranged on longitudinal weldering cutter installing plate 43 and withstand the both sides of longitudinally weldering cutter 47 below, plays the effect of buffer memory.Longitudinally weldering cutter push to device 44 be arranged on longitudinal weldering cutter installing plate 43 below and with the cam surface contact of camshaft 39.Thrust spring 49 is installed on the axis of guide 42, and between longitudinal ultrasonic ripple seat 50 and linear bearing 48.Servomotor 37 drives camshaft 39 to rotate by reductor 38, and the connecting rod 40 on camshaft 39 drives the axis of guide 42 to move up and down by transverse slat 41, thus make longitudinal ultrasonic ripple seat 50 and longitudinal ultrasonic ripple 51 all together with move up and down; Weld cutter to push device 44 to move up and down with the longitudinal direction of the cam surface contact of camshaft 39 simultaneously, thus make longitudinally to weld cutter 47 and move up and down together.Longitudinal ultrasonic ripple 51 with longitudinally weld cutter 47 and move contrary all the time, remain a motion of opening a conjunction.When camshaft 39 revolves turnback, longitudinal ultrasonic ripple 51 times to extreme lower position, longitudinally on weldering cutter 47 to extreme higher position, at this moment longitudinal ultrasonic ripple 51 welds together with cutter 47 touches with longitudinal, just completes the longitudinal measure of cloth bag; When camshaft 39 revolves turnback again, longitudinal ultrasonic ripple 51 is with longitudinally welding cutter 47 gets back to original position again, and namely longitudinal ultrasonic ripple 51 gets back to extreme higher position, and longitudinally extreme lower position got back to by weldering cutter 47.
Spring travel mechanism comprises line slideway 34, servomotor 52, reductor 53, crank axle 54, connecting rod 55, and line slideway 34 is contained in below main panel 35, and being connected with crank axle 54 of connecting rod 55, the other end is connected with main panel 35.Servomotor 52 drives crank axle 54 to rotate by reductor 53, makes connecting rod 55 drive longitudinal measure mechanism to move back and forth along line slideway 34, thus completes the movement of spring.
During work, when longitudinal ultrasonic ripple 51 and longitudinally weld cutter 47 touch together with complete the longitudinal measure of cloth bag time, spring travel mechanism just pushes the distance that longitudinal measure mechanism moves forward a spring, then longitudinal ultrasonic ripple 51 with longitudinally weld cutter 47 and open and get back to original position, then spring travel mechanism hauls longitudinal measure mechanism again and gets back to original position, action like this repeatedly, completes the longitudinal measure of cloth bag and the movement of spring, just produces bagged-spring one by one.
Only as described above, be only preferred embodiment of the present invention.Such as professional who are familiar with this art, after understanding technological means of the present invention, natural energy, according to actual needs, is changed under guiding of the present invention.Therefore all equal changes of doing according to the present patent application the scope of the claims and modification, then still remain within the scope of the patent.
Claims (8)
1. a modified automatic production equipment of bagged springs, it is characterized in that, carried pack device and spring to weld travel mechanism to form by overdo conveying mechanism, spring of the spring connected successively, the spring produced of automatic spring winding machine overdoes through the spring conveying mechanism that overdoes, carries, enter spring conveying pack device again to pack, then carry out welding with mobile through spring welding travel mechanism.
2. modified automatic production equipment of bagged springs according to claim 1, it is characterized in that, the described spring conveying mechanism that overdoes comprises two groups of chain assemblies and two pieces of installing plates, described chain assemblies comprises chain stay, chain, servomotor, reductor, drive sprocket, driven sprocket, bearing spring plate, push away spring plank, cover plate, spring blocking plate and the assembly that overdoes, described servomotor, described reductor, described drive sprocket, described driven sprocket, described chain and described spring blocking plate are all mounted on described chain stay, described bearing spring plate, describedly push away spring plank and described cover plate is arranged on described chain, the described assembly that overdoes is fixed on described spring blocking plate, described servomotor drives described drive sprocket by described reductor, described driven sprocket and described chain rotate, described bearing spring plate support lives spring, described spring blocking plate blocks the two ends of described spring, the described spring plank that pushes away promotes described spring and is fed forward.
3. modified automatic production equipment of bagged springs according to claim 2, it is characterized in that, chain assemblies described in two groups symmetrically mode is arranged on two pieces of described installing plates, described installing plate is equipped with two bar shaped through-hole grooves, one group of chain assemblies is fixed on one end of described installing plate, and another organizes chain assemblies according to the height of spring along strip through-hole groove free adjustment.
4. modified automatic production equipment of bagged springs according to claim 1, it is characterized in that, described spring conveying pack device comprises two groups of Timing Belt assemblies, described Timing Belt assembly comprises upper guard board, lower backplate, front guide, back guide, active synchronization is taken turns, driven synchronizing wheel, tightness of synchronous belt wheel and Timing Belt, described front guide, described back guide, described active synchronization wheel, described tightness of synchronous belt wheel is arranged between described upper guard board and described lower backplate, described driven synchronizing wheel is contained in the end of described back guide, described Timing Belt is taken turns by described active synchronization, described driven synchronizing wheel and described tightness of synchronous belt take turns the outside being looped around described front guide and described back guide, the two ends contact of described spring is between two described Timing Belts.
5. modified automatic production equipment of bagged springs according to claim 4, it is characterized in that, described Timing Belt assembly is also provided with servomotor, reductor, hexagonal axis and two groups of bevel gears, and described servomotor drives described synchronous clamping residence to state spring by described reductor, described hexagonal axis, described bevel gear and described synchronizing wheel and is fed forward.
6. modified automatic production equipment of bagged springs according to claim 5, it is characterized in that, Timing Belt assembly described in two groups symmetrically mode is arranged on above dovetail guide, described in one group, Timing Belt assembly is fixed on one end of dovetail guide, and another organizes described Timing Belt assembly according to the height of described spring by screw mandrel free adjustment.
7. modified automatic production equipment of bagged springs according to claim 6, it is characterized in that, transverse weld structure is also laid with in described Timing Belt assembly rear end, described transverse weld structure mainly comprises cloth folded board support, cloth folded board, lateral ultrasonic wave, laterally weld cutter, cylinder and cloth pressing wheel, described cloth folded board is positioned at outside described back guide, and be arranged on described cloth folded board support, described cloth folded board support installing is on described upper rail, described lateral ultrasonic wave, described transverse direction welds cutter, described cylinder, described cloth pressing wheel is arranged on below described back guide, before described cloth pressing wheel is separately positioned on described lateral ultrasonic wave and described laterally weldering cutter, after, non-woven fabrics both sides are down wrapped up from the gap between described back guide and described cloth folded board, and two fillets of non-woven fabrics are pushed down by cloth pressing wheel described in two groups.
8. modified automatic production equipment of bagged springs according to claim 1, is characterized in that, described spring welding travel mechanism comprises one group of longitudinal measure mechanism and one group of spring travel mechanism, and described longitudinal measure mechanism comprises main panel, slide block, servomotor, reductor, camshaft, connecting rod, transverse slat, the axis of guide, longitudinally weldering cutter installing plate, longitudinally device pushed to by weldering cutter, longitudinally weld tool rest, longitudinally weld cutter, linear bearing, thrust spring, longitudinal ultrasonic ripple seat and longitudinal ultrasonic ripple, described servomotor, described reductor, described camshaft is arranged on below described main panel, described main panel both sides are provided with slide block, the described axis of guide is through slide block, described axis of guide one end is connected with the described longitudinal ultrasonic ripple seat being provided with described longitudinal ultrasonic ripple, the other end is connected with described transverse slat, and one end of described connecting rod is connected with described transverse slat, and the other end is connected with described camshaft, described longitudinally weldering cutter installing plate is arranged on the described axis of guide by the described linear bearing on both sides, and described longitudinally weldering tool rest is interspersed with described longitudinal direction and welds cutter, and being arranged on described longitudinally weldering cutter installing plate, described longitudinally weldering cutter is pushed device to and is arranged on below described longitudinally weldering cutter installing plate, and with the cam contact in described camshaft,
Described spring travel mechanism comprises line slideway, servomotor, reductor, crank axle and connecting rod, described line slideway is contained in below described main panel, one end of described connecting rod is connected with described crank axle, the other end is connected with described main panel, described servomotor drives described crank axle to rotate by described reductor, described connecting rod drives described longitudinal measure mechanism to move back and forth along described line slideway, thus completes the movement of spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446396.8A CN104438982B (en) | 2013-09-25 | 2013-09-25 | Automatic production equipment of bagged springs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446396.8A CN104438982B (en) | 2013-09-25 | 2013-09-25 | Automatic production equipment of bagged springs |
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| CN104438982A true CN104438982A (en) | 2015-03-25 |
| CN104438982B CN104438982B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310446396.8A Active CN104438982B (en) | 2013-09-25 | 2013-09-25 | Automatic production equipment of bagged springs |
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| US4655907A (en) * | 1984-07-31 | 1987-04-07 | Kabushiki Kaisha Ando Screen Seisakusho | Tensioning apparatus for a wire net in a vibration sieving machine |
| CN1264327A (en) * | 1997-05-30 | 2000-08-23 | 西蒙斯公司 | Method and apparatus for manufactring coil springs |
| CN101780511A (en) * | 2009-03-19 | 2010-07-21 | 叶超英 | Method and device for producing spring bed core full-automatically |
| CN201777876U (en) * | 2010-07-30 | 2011-03-30 | 严卓晟 | Continuously-rolling pocket spring machine |
| CN203508887U (en) * | 2013-09-25 | 2014-04-02 | 澳门泰华机械有限公司 | Improved automatic bagged spring production equipment |
-
2013
- 2013-09-25 CN CN201310446396.8A patent/CN104438982B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4655907A (en) * | 1984-07-31 | 1987-04-07 | Kabushiki Kaisha Ando Screen Seisakusho | Tensioning apparatus for a wire net in a vibration sieving machine |
| CN1264327A (en) * | 1997-05-30 | 2000-08-23 | 西蒙斯公司 | Method and apparatus for manufactring coil springs |
| CN101780511A (en) * | 2009-03-19 | 2010-07-21 | 叶超英 | Method and device for producing spring bed core full-automatically |
| CN201777876U (en) * | 2010-07-30 | 2011-03-30 | 严卓晟 | Continuously-rolling pocket spring machine |
| CN203508887U (en) * | 2013-09-25 | 2014-04-02 | 澳门泰华机械有限公司 | Improved automatic bagged spring production equipment |
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| CN104438982B (en) | 2017-03-01 |
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