CN204799701U - Belt helps package to put - Google Patents
Belt helps package to put Download PDFInfo
- Publication number
- CN204799701U CN204799701U CN201520513281.0U CN201520513281U CN204799701U CN 204799701 U CN204799701 U CN 204799701U CN 201520513281 U CN201520513281 U CN 201520513281U CN 204799701 U CN204799701 U CN 204799701U
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- arc
- reel
- assisting device
- strap rolling
- right angle
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Abstract
The embodiment of the utility model discloses belt helps package to put, help a roll ware including the belt, the belt helps roll ware including helping a roll car, helping roll swing arm and arc, wherein: help a roll swing arm to set up respectively help roll both sides of plantago end, the one end that helps roll swing arm with help a roll car rotation connection, the other end to be provided with the right angle pressure head, the middle part elastic connection of the outer wall of arc is in on the right angle pressure head, the inner wall of arc is near batching the reel that the strip was used, the inner wall of arc with there is the interval between the outer wall of reel. Helping a roll process, on the one hand, through the strip of rolling up that helps is pushed down to the arc, can batch the strip of various width, has enlarged the width scope of the winding material that helps, on the other hand, the right angle pressure head with the arc is connected through resilient means, resilient means can cushion the right angle pressure head receives to avoid from the pressure in of the batching strip the right angle pressure head is extrudeed the fracture.
Description
Technical field
The utility model relates to strip coiling supporting technology field, particularly relates to a kind of strap rolling-assisting device.
Background technology
In band steel rolling is produced, taking-up equipment is one of key equipment on steel sheet production line, for collecting overlength rolled piece, is batched rolling so that store and transport.Strap rolling-assisting device, as auxiliary taking-up equipment important on steel rolling production-line, has a wide range of applications.Strap rolling-assisting device is generally made up of strap rolling-assisting device and the entrance guide plate that stretches, its Main Function be by band take the lead be wound on reel.
Strap rolling-assisting device of the prior art as shown in Figure 1, help volume both sides, car 01 end to be equipped with and help volume swing arm 06, and help the initial position of volume swing arm 06 away from reel 05, before starting to batch, volume car 01 is helped to shift to reel 05 place, after helping volume car 01 to arrive reel 05 place, volume swing arm 06 is helped to rotate to reel 05 in the promotion of the second hydraulic cylinder 04, make belt 03 embrace reel 05, belt 03, by the first hydraulic cylinder 02 tensioning, is carried out and is helped volume to prepare.When starting to batch, unit low cruise, band 07 delivers to reel 05 by the entrance guide plate 08 that stretches, and band 07 is nipped and taken up on reel 05 with the rotation of reel 05 under the clamping of belt 03.Enclose when band 07 is wound around 3-7 on reel 05 and after setting up initial coiling tension, completes and help volume, strap rolling-assisting device is deactivated position, and unit raising speed, carries out normal rolling.As shown in Figure 2, for the partial structurtes schematic diagram of strap rolling-assisting device in prior art, wherein, help on volume swing arm 06 and be fixed with right angle pressure head 061, lick in journey helping, by right angle pressure head 061, band 07 is pressed on reel 05, makes band 07 better pack tightly reel 05, prevent the coiling process afterwards, there is skidding in band 07 on reel 05.
Two of the prior art are helped the volume correspondence position line place straight line of swing arm 06 and the axis being parallel of reel 05 and close reel 05, and between two right angle pressure heads 061, there is certain distance, when making reel 05 winding strips, pressure can only be applied by these two right angle pressure heads 061 pair of band 07; But the band that aforesaid way causes this strap rolling-assisting device that volume width cannot be helped narrower than the distance between two right angle pressure heads 061, makes this strap rolling-assisting device help the strip width narrow scope of volume; In addition, lick in journey helping, along with reel 05 is wound around the increase of band 07 number of turns, the active force from band 07 that right angle pressure head 061 is subject to constantly increases, and such right angle pressure head 061 is easy to be squeezed fracture, and then causes band 07 to be scratched.
Utility model content
The utility model embodiments provides a kind of strap rolling-assisting device, helps the strip width narrow scope of volume to solve device of the prior art and easily scratches the problem of band.
In order to solve the problems of the technologies described above, the utility model embodiment discloses following technical scheme:
A kind of strap rolling-assisting device, comprises strap rolling-assisting device, and described strap rolling-assisting device comprises and helps volume car, helps volume swing arm and arc; Wherein:
Described help volume swing arm be separately positioned on described in help the both sides of volume car front end, described in help one end of volume swing arm and described helping to roll up that car is rotationally connected, the other end is provided with right angle pressure head, the overbending direction of described right angle pressure head helps volume car towards described;
The middle part elasticity of the outer wall of described arc is connected on described right angle pressure head, and the inwall of described arc, near the reel of winding strips, exists spacing between the inwall of described arc and the outer wall of described reel.
Preferably, described strap rolling-assisting device also comprises entrance and to stretch guide plate, wherein:
The described entrance guide plate that stretches is arranged on the porch that band enters described strap rolling-assisting device, and described entrance stretches between guide plate and described reel and there is spacing;
Described entrance stretch guide plate lower surface on be provided with press-roller device, described press-roller device comprises pressure roller and the 3rd hydraulic cylinder;
The cylinder body of described 3rd hydraulic cylinder is fixed on described entrance and stretches on guide plate, and the piston rod of described 3rd hydraulic cylinder is connected with the roll shaft of described pressure roller;
In the axis of described reel, between described pressure roller and described reel, there is spacing in the axis being parallel of described pressure roller.
Preferably, described press-roller device also comprises adapter sleeve and connecting rod, wherein:
Described adapter sleeve is fixed on described entrance and stretches on guide plate;
One end of described connecting rod connects the roll shaft of described pressure roller, the other end is set in described adapter sleeve;
The cylinder body of described 3rd hydraulic cylinder is fixed on described entrance and stretches on guide plate, and the piston rod of described 3rd hydraulic cylinder is connected with described connecting rod.
Preferably, lick in journey helping, the spacing between the inwall of described arc and the outer wall of described reel is 0.5-6cm.
Preferably, described arc is circular arc plate, the axis of described circular arc plate and the dead in line of described reel.
Preferably, the jockey between described arc and described right angle pressure head comprises spring or sheet rubber.
Preferably, the arc length of described arc is 5-25cm.
Preferably, described arc is curved plate.
Preferably, the length of described pressure roller is equal to or less than the length of described reel.
Preferably, the diameter of described pressure roller is 5-15cm.
From above technical scheme, a kind of strap rolling-assisting device that the utility model embodiment provides, comprises strap rolling-assisting device, and described strap rolling-assisting device comprises and helps volume car, helps volume swing arm and arc; Wherein: described in help volume swing arm be separately positioned on described in help the both sides of volume car front end, described in help one end of volume swing arm and described helping to roll up that car is rotationally connected, the other end is provided with right angle pressure head, the overbending direction of described right angle pressure head helps volume car towards described; The middle part elasticity of the outer wall of described arc is connected on described right angle pressure head, and the inwall of described arc, near the reel of winding strips, exists spacing between the inwall of described arc and the outer wall of described reel.Compared with prior art, on the one hand, the utility model by arranging described arc on described right angle pressure head, lick journey helping, push down batched band by described arc, go for the band batching various width like this, expand the width range of helped coiled strip, on the other hand, described right angle pressure head is connected by elastic device with described arc, described elastic device can cushion described right angle pressure head by certainly in the pressure of institute's winding strips, avoid the fracture of described right angle pressure head, simultaneously, owing to there being certain elastically-deformable compression distance between described right angle pressure head and described arc, under the prerequisite helping the volume number of turns constant, the distance reduced between described right angle pressure head and described reel that can be suitable, just the pressure of described arc to institute's winding strips can be increased like this when helping volume, and then institute's winding strips is better packed tightly on described reel.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the basic structure schematic diagram of the duty of strap rolling-assisting device of the prior art;
Fig. 2 is the partial structurtes schematic diagram of the duty of strap rolling-assisting device of the prior art;
The basic structure schematic diagram of a kind of strap rolling-assisting device that Fig. 3 provides for the utility model embodiment;
The partial structurtes schematic diagram helping volume swing arm that Fig. 4 provides for the utility model embodiment;
The basic structure schematic diagram of the another kind of strap rolling-assisting device that Fig. 5 provides for the utility model embodiment;
The partial structurtes schematic diagram of the duty of the another kind of strap rolling-assisting device that Fig. 6 provides for the utility model embodiment;
The structural representation of the press-roller device that Fig. 7 provides for the utility model embodiment.
Detailed description of the invention
Technical scheme in the utility model is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
Embodiment one
See Fig. 3, it is the basic structure schematic diagram of a kind of strap rolling-assisting device that the utility model embodiment provides.
As shown in Figure 3, the strap rolling-assisting device that the utility model embodiment provides comprises: strap rolling-assisting device, and described strap rolling-assisting device comprises and helps volume car 1, first hydraulic cylinder 2, belt 3, second hydraulic cylinder 4, helps volume swing arm 6 and arc 61; Wherein: described in help volume car 1 base of described strap rolling-assisting device can slide into reel 5 place of winding strips, described belt 3 can tensioning under the effect of described first hydraulic cylinder 2, described help volume swing arm 6 be separately positioned on described in help volume car 1 front end both sides, second hydraulic cylinder 4 is rolled up swing arm 6 be flexibly connected with described being helped, described in help volume swing arm 6 can under the promotion of described second hydraulic cylinder 4 near or away from described reel 5.Meanwhile, described in help one end of volume swing arm 6 to roll up that car 1 is rotationally connected, the other end is provided with right angle pressure head 62 with described helping, the overbending direction of described right angle pressure head 62 rolls up car 1 towards described helping; The middle part elasticity of the outer wall of described arc 61 is connected on described right angle pressure head 62, the inwall of described arc 61 is near the reel 5 of winding strips, namely helping the arc opening licking Cheng Suoshu arc 61 towards described reel 5, meanwhile, there is spacing between the inwall of described arc 61 and the outer wall of described reel 5.
Before starting to help volume, described in help volume swing arm 6 under the promotion of described second hydraulic cylinder 4 near described reel 5; Lick journey helping, for ensure help the band of volume can apply effective active force to described band by the passage that formed between described arc 61 and described reel 5 and described arc 61 smoothly, there is spacing between the inwall of described arc 61 and the outer wall of described reel 5, and spacing between the outer wall of the inwall of described arc 61 and described reel 5 according to help the thickness of the band of volume and needs to help the number of turns of volume to set; Such as, help volume thickness be 0.1cm thinner band, need to help the number of turns of volume to be 5-6 circle time, then the spacing between the inwall of described arc 61 and described reel 5 outer wall is set to 0.5cm, when helping volume thickness to be the band of about 1cm, then the spacing between described arc 61 and described reel 5 outer wall is set to 6cm.The present embodiment, by arranging described arc 61 on described right angle pressure head 62, lick journey helping, the band of helped volume is pushed down by described arc 61, solve right angle of the prior art pressure head only has the active force of two points situation at the band of helped volume, go for the band batching various width, expand the width range of helped coiled strip.Certainly, lick in journey helping, the spacing between the inwall of described arc 61 and the outer wall of described reel 5 is not limited to the data area that the present embodiment provides, and in actual application, can adjust accordingly as required.
As shown in Figure 4, what the present embodiment provided helps the partial structurtes schematic diagram rolling up swing arm, be connected by spring between described arc 61 and described right angle pressure head 62, like this by arranging described spring, the extruding force of the band from helped volume that described arc 61 and described right angle pressure head 62 are subject to can be cushioned, avoid described right angle pressure head 61 to be squeezed fracture.In addition, owing to having certain elastic deformation compression distance between described right angle pressure head 62 and described arc 61, under the prerequisite helping the volume number of turns constant, the distance reduced between described arc 61 and described reel 5 that can be suitable, such as, need to help volume thickness to be the band of 0.2cm, when the volume number of turns need be helped to be 5 circle, the spacing between the inwall of described arc 61 and described reel 5 outer wall is changed into 0.8cm by original 1cm, when helping the volume number of turns to the 4th circle, described arc 61 can with the band close contact of helped volume, and then the band of helped volume is better packed tightly on described reel 5.In addition, the elastic connecting device of described arc 61 and described right angle pressure head 62 can also be sheet rubber, silica gel piece etc.
Because the cornerite of described belt 3 on described reel 5 is subject to the restriction of each factor, the cornerite of described belt is generally limited within the scope of 200 °-260 °, after within the scope of the parcel leaving described belt 3 at the band of helped volume, lose the chucking power of described belt 3, just can there is elasticity to recover, so at described reel 5 not by region that described belt 3 wraps up, the band of helped volume is pushed down by described arc 61, the arc length of described arc 61 according to the diameter of reel and help the elasticity recovery characteristics of the band of volume to design, generally be designed to 5-25cm and can meet application demand.In addition, because described arc 61 can be subject to the tangential friction force of the band of helped volume and the active force of normal direction extruding force, in the present embodiment, described arc 61 adopts the steel plate of good mechanical property to prepare, and can certainly select other material, as copper coin.
In order to lick in journey helping, the active force of described arc 61 is made to be evenly distributed on helped coiled strip, ensure help coiled strip smooth be wrapped on described reel 5, described arc 61 is designed to circular arc plate, the axis of described circular arc plate and the axes coincide of described reel 5 simultaneously, like this, lick the plate of circular arc described in journey and can be fitted in closely on helped coiled strip helping.
Embodiment two
In some production lines, in order to ensure that the band of helped volume can enter described strap rolling-assisting device smoothly, usually arrange an entrance to stretch guide plate in the exit of the carrying device of helped coiled strip, simultaneously the described entrance guide plate that stretches is arranged on the porch that helped coiled strip enters described strap rolling-assisting device, and described entrance stretches, guide plate coordinates institute to help the band of volume to enter the direction setting of described strap rolling-assisting device.
With reference to the basic structure schematic diagram of the another kind of strap rolling-assisting device that figure 5 provides for the utility model embodiment, the present embodiment provides strap rolling-assisting device, be with the difference of enforcement one, also comprise entrance to stretch guide plate 8, wherein: the described entrance guide plate 8 that stretches is arranged on the porch that band 7 enters described strap rolling-assisting device, described entrance stretches between guide plate 8 and described reel 5 and there is spacing, described band 7 enters described strap rolling-assisting device along the stretch upper surface of guide plate 8 of described entrance, wherein, the described entrance surface contacted with described band 7 in guide plate 8 of stretching is upper surface, the surface relative with described upper surface is lower surface, described entrance stretch guide plate 8 lower surface on be provided with press-roller device, described press-roller device comprises pressure roller 91 and the 3rd hydraulic cylinder 92, the cylinder body of described 3rd hydraulic cylinder 92 is fixed on described entrance and stretches on guide plate 8, and the piston rod of described 3rd hydraulic cylinder 92 is connected with the roll shaft of described pressure roller 91, in the axis of described reel 5, between described pressure roller 91 and described reel 5, there is spacing in the axis being parallel of described pressure roller 91.The present embodiment and embodiment one something in common referring to embodiment one, can not repeat them here.
For the band that some elasticity amounts of recovery are large, after the compacting scope of taking the lead to walk out described belt 3 cornerite scope and described arc 61 of band, lose the chucking power of described belt 3 and the press power of described arc 61, described taking the lead can elasticity be recovered, unclamp from described reel 5, the first band entering described strap rolling-assisting device afterwards of described band is caused to scratch, the present embodiment is by the lower surface of the guide plate 8 that stretches at described entrance is provided with press-roller device, lick journey helping, described taking the lead is pressed on described cylinder 5 by described pressure roller 91, solve band by the problem taking the lead to scratch.
As shown in Figure 6, the partial structurtes schematic diagram of the duty of the another kind of strap rolling-assisting device provided for the present embodiment, when helping volume, described in help that volume swing arm 6 lifts under the effect of described second hydraulic cylinder 4, described arc 61 is near described reel 5; The piston rod of described 3rd hydraulic cylinder 92 stretches out, and described pressure roller 91, under the promotion of described piston rod, near described reel 5, and exists spacing between described pressure roller 91 and described reel 5.In order to ensure that band 7 can smoothly by the passage of the formation between described pressure roller 91 and described reel 5, lick journey helping, the spacing between described pressure roller 91 and described reel 5 is more than or equal to the spacing between described arc 61 and described reel 5.When described band 7 described entrance stretch guide plate 8 guiding under deliver to described reel 5 place, described band 7 is nipped and with the rotation of described reel 5 around on described reel 5 under the clamping of described belt 3; After the compacting scope of taking the lead to walk out described belt 3 cornerite scope and described arc 61 of described band 7, enter the passage of the formation between described pressure roller 91 and described reel 5, the taking the lead of described band 7 is pressed on described reel 5 by described pressure roller 91, and what effectively prevent described band 7 takes the lead that elasticity is recovered, the problem of taking the lead to be scratched by the band entering described strap rolling-assisting device afterwards of described band 7.After helping volume work to complete, the piston rod of described 3rd hydraulic cylinder 92 is retracted, described pressure roller 91 under the pulling of described piston rod, away from described reel 5.
Further, in order to ensure that described pressure roller 91 can stretch out stably or retract, as shown in Figure 7, described press-roller device also comprises adapter sleeve 93 and connecting rod 94, described adapter sleeve 93 is fixed on described entrance and stretches on guide plate 8, and one end of described connecting rod 94 connects the roll shaft of described pressure roller 91, the other end is set in described adapter sleeve 93; The cylinder body of described 3rd hydraulic cylinder 92 is fixed on described entrance and stretches on guide plate 8, and the piston rod of described 3rd hydraulic cylinder 92 is connected with described connecting rod 94.
In order to ensure described band 7 width on be evenly subject to described pressure roller 91 pressure effect, can be flattened be pressed on described reel 5 and expand described press-roller device and be suitable for the width range helping coiled strip, be equal with the length of described reel 5 by the Design of length of described pressure roller 91, can certainly, according to the developed width of helped coiled strip, be the length being less than described reel 5 by the Design of length of described pressure roller 91.In addition, consider that described pressure roller 91 and institute help the contact area of coiled strip to try one's best large, while do not hinder again described in help the normal work of other parts in winding apparatus, be 5-15cm by the diameter design of described pressure roller 91.
The strap rolling-assisting device that embodiment one and embodiment two provide, not only for being applicable to be with in the production field of steel, can also be used for helping other production field such as metal or paper of volume.
It should be noted that, in this article, the such as relational terms of " first " and " second " etc. and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only detailed description of the invention of the present utility model, those skilled in the art is understood or realizes the utility model.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a strap rolling-assisting device, is characterized in that, comprises strap rolling-assisting device, and described strap rolling-assisting device comprises and helps volume car (1), helps volume swing arm (6) and arc (61); Wherein:
Described help volume swing arm (6) be separately positioned on described in help volume car (1) front end both sides, with described helping, the described one end of volume swing arm (6) that helps rolls up that car (1) is rotationally connected, the other end is provided with right angle pressure head (62), the overbending direction at described right angle pressure head (62) rolls up car (1) towards described helping;
The middle part elasticity of the outer wall of described arc (61) is connected on described right angle pressure head (62), near the reel (5) of winding strips, between the inwall of described arc (61) and the outer wall of described reel (5), there is spacing in the inwall of described arc (61).
2. strap rolling-assisting device according to claim 1, is characterized in that, also comprises entrance and to stretch guide plate (8), wherein:
The described entrance guide plate (8) that stretches is arranged on the porch that band enters described strap rolling-assisting device, and described entrance stretches between guide plate (8) and described reel (5) and there is spacing;
Described entrance stretch guide plate (8) lower surface on be provided with press-roller device, described press-roller device comprises pressure roller (91) and the 3rd hydraulic cylinder (92);
The cylinder body of described 3rd hydraulic cylinder (92) is fixed on described entrance and stretches on guide plate (8), and the piston rod of described 3rd hydraulic cylinder (92) is connected with the roll shaft of described pressure roller (91);
In the axis of described reel (5), between described pressure roller (91) and described reel (5), there is spacing in the axis being parallel of described pressure roller (91).
3. strap rolling-assisting device according to claim 2, is characterized in that, described press-roller device also comprises adapter sleeve (93) and connecting rod (94), wherein:
Described adapter sleeve (93) is fixed on described entrance and stretches on guide plate (8);
One end of described connecting rod (94) connects the roll shaft of described pressure roller (91), the other end is set in described adapter sleeve (93);
The cylinder body of described 3rd hydraulic cylinder (92) is fixed on described entrance and stretches on guide plate (8), and the piston rod of described 3rd hydraulic cylinder (92) is connected with described connecting rod (94).
4. strap rolling-assisting device according to claim 1, is characterized in that, lick in journey helping, the spacing between the inwall of described arc (61) and the outer wall of described reel (5) is 0.5-6cm.
5. the strap rolling-assisting device according to claim 1 or 4, is characterized in that, described arc (61) is circular arc plate, the axis of described circular arc plate and the dead in line of described reel (5).
6. the strap rolling-assisting device according to claim 1 or 4, is characterized in that, the jockey between described arc (61) and described right angle pressure head (62) comprises spring or sheet rubber.
7. the strap rolling-assisting device according to claim 1 or 4, is characterized in that, the arc length of described arc (61) is 5-25cm.
8. the strap rolling-assisting device according to claim 1 or 4, is characterized in that, described arc (61) is curved plate.
9. the strap rolling-assisting device according to Claims 2 or 3, is characterized in that, the length of described pressure roller (91) is less than or equal to the length of described reel (5).
10. the strap rolling-assisting device according to Claims 2 or 3, is characterized in that, the diameter of described pressure roller (91) is 5-15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513281.0U CN204799701U (en) | 2015-07-15 | 2015-07-15 | Belt helps package to put |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513281.0U CN204799701U (en) | 2015-07-15 | 2015-07-15 | Belt helps package to put |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204799701U true CN204799701U (en) | 2015-11-25 |
Family
ID=54584592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520513281.0U Withdrawn - After Issue CN204799701U (en) | 2015-07-15 | 2015-07-15 | Belt helps package to put |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204799701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170701A (en) * | 2015-07-15 | 2015-12-23 | 莱芜钢铁集团电子有限公司 | Belt winding assisting device |
-
2015
- 2015-07-15 CN CN201520513281.0U patent/CN204799701U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170701A (en) * | 2015-07-15 | 2015-12-23 | 莱芜钢铁集团电子有限公司 | Belt winding assisting device |
| CN105170701B (en) * | 2015-07-15 | 2017-11-24 | 莱芜钢铁集团电子有限公司 | A kind of strap rolling-assisting device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151125 Effective date of abandoning: 20171124 |