CN113997618A - Tensile loading attachment of gluey part - Google Patents
Tensile loading attachment of gluey part Download PDFInfo
- Publication number
- CN113997618A CN113997618A CN202111124067.2A CN202111124067A CN113997618A CN 113997618 A CN113997618 A CN 113997618A CN 202111124067 A CN202111124067 A CN 202111124067A CN 113997618 A CN113997618 A CN 113997618A
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- pressing
- compression roller
- rubber component
- shaft
- adjusting
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- 238000003825 pressing Methods 0.000 claims abstract description 88
- 230000006835 compression Effects 0.000 claims abstract description 50
- 238000007906 compression Methods 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 10
- 238000000465 moulding Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
- Coating Apparatus (AREA)
Abstract
The invention belongs to the technical field of rubber part stretching in a tire molding process, and discloses a rubber part stretching and feeding device. The device comprises a feeding frame; the conveying mechanism is arranged on the feeding frame; the rubber component enters the differential stretching mechanism from the conveying mechanism; the differential stretching mechanism comprises a pair of first pressing parts arranged in parallel in the moving direction of the rubber component and a pair of second pressing parts correspondingly arranged above the first pressing parts, the height of the second pressing parts is adjustable, the second pressing parts are matched with the correspondingly arranged first pressing parts to form a pressing space with a preset shape, the rolling speed of the front second pressing part is higher than that of the rear second pressing part, and the rubber component between the two pressing parts is stretched; and the stretched rubber component enters the compression roller mechanism and is attached to the forming drum. The device can ensure that the rubber component is uniformly stretched by the pressing force.
Description
Technical Field
The invention relates to the technical field of rubber part stretching in a tire molding process, in particular to a rubber part stretching and feeding device.
Background
In the forming process of the large-inch tire, the rubber component is generally independently extruded and then transferred to a forming process for fitting, and the design length of the rubber component is generally smaller than the perimeter of a forming drum of a forming machine; in the process of bonding the rubber member, a worker is required to manually stretch the rubber member to bond the rubber member to the molding drum over the entire circumference. However, in actual operation, the rubber component is stretched by hand, which often causes uneven stretching of the rubber component and deformation of the rubber component in the stretching process, thereby affecting the pressing of the rubber component in the later period and further affecting the quality of the tire; in addition, the worker also has the problems of increasing labor intensity, influencing mechanical operation and the like in the process of stretching the rubber part.
Disclosure of Invention
The invention provides a rubber component stretching and feeding device, aiming at solving the technical problem of uneven stretching existing in the gluing process of a rubber component in the tire molding process in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a rubber part stretching and feeding device comprises a feeding frame; the conveying mechanism is arranged on the feeding frame; the rubber component enters the differential stretching mechanism from the conveying mechanism; the differential stretching mechanism comprises a pair of first pressing parts arranged in parallel in the moving direction of the rubber component and a pair of second pressing parts correspondingly arranged above the first pressing parts, the height of the second pressing parts is adjustable, the second pressing parts are matched with the correspondingly arranged first pressing parts to form a pressing space with a preset shape, and the rolling speed of the front second pressing part is greater than that of the rear second pressing part in the moving direction of the rubber component, so that the rubber component between the two pressing parts is stretched; and the stretched rubber component enters the compression roller mechanism and is attached to the forming drum.
Further, the first press fit portion includes: an upper compression roller; and the upper press roll is connected with the height adjusting unit through an optical axis, and the height between the first pressing part and the second pressing part is adjusted by the height adjusting unit.
Further, the height adjusting unit includes: the lower end part of the rack is connected with the upper compression roller; the gear is meshed with the rack and drives the rack to move up and down through the rotation of the gear; the gear is mounted on the adjusting shaft; the adjusting piece is installed on the adjusting shaft and drives the gear to rotate through the adjusting shaft by rotating the adjusting piece.
Furthermore, the differential stretching mechanism further comprises a fixing plate, the fixing plate is mounted on the feeding frame, and an accommodating groove for accommodating the rack is formed in the fixing plate.
Furthermore, the first pressing part comprises a plurality of upper pressing rollers which are arrayed on the same horizontal plane, a pair of racks is arranged at two ends of each upper pressing roller, a pair of gears is correspondingly arranged on the pair of racks, an adjusting shaft is correspondingly arranged on the pair of gears, and an adjusting piece is arranged at one end of each adjusting shaft.
Furthermore, the second pressing parts comprise lower pressing rollers, and the two lower pressing rollers are driven by different power units respectively to realize rolling speed difference.
Further, the roll mechanism includes: the compression roller shaft is arranged on the feeding frame; one end of the compression roller arm is connected with the compression roller shaft; and the compression roller is arranged at the other end of the compression roller arm, and the compression roller shaft is rotated to enable the compression roller to be in contact with the forming drum, so that the gluing of the rubber part is completed.
Further, a spring is arranged at the position of the compression roller arm between the compression roller arm and the compression roller shaft; the press roller shaft is provided with a groove, and one end of the press roller arm is positioned in the groove.
Furthermore, the conveying mechanism comprises a plurality of transmission shafts which are arranged in sequence, a conveying belt is arranged on each transmission shaft, and one transmission shaft is connected with the power unit; and a transmission shaft for supporting and transition is arranged between the differential stretching mechanism and the transmission device.
The invention provides a rubber part stretching and feeding device, wherein the height of a second pressing part of a differential stretching mechanism is adjustable, and the second pressing part is matched with a first pressing part to form a pressing space with a preset shape. By using the differential stretching mechanism, the height of the first pressing part can be adjusted according to the shape of the rubber component, so that the uniform pressing force on the rubber component is ensured, the deformation of each part of the half part in the stretching process is avoided, and the rubber component is uniformly stretched when a tire is molded. The compression roller mechanism adjusts the compression roller through the elastic piece so as to be suitable for half parts in different shapes and ensure the pressing effect. The invention improves the product quality, avoids manually stretching the half parts and reduces the labor intensity.
Drawings
Fig. 1 is a schematic structural view of a rubber part stretching and feeding device provided by the invention;
FIG. 2 is a schematic structural diagram of a differential stretching mechanism provided by the present invention;
fig. 3(a) and 3(b) are partially enlarged views of the differential stretching mechanism provided in the present invention;
FIG. 4 is a top view of the adhesive component stretch feeder provided by the present invention;
FIG. 5 is a schematic structural diagram of a roller mechanism provided by the present invention;
FIG. 6 is a schematic view of the construction of a platen roller shaft according to the present invention;
fig. 7 is a schematic structural view of a press arm provided by the present invention.
Reference numerals: 1. a feeding frame; 2. a transport mechanism; 3. a differential stretching mechanism; 4. a press roll mechanism; 5. a forming drum; 21. a drive shaft; 22. a conveyor belt; 23. a transfer shaft; 24. a third power unit; 31. a first press fit portion; 32. a second press fit portion; 33. a fixing plate; 311. an upper compression roller; 312. a rack; 313. a gear; 314. an adjustment shaft; 315. an adjustment member; 312a, a guide groove; 321. a lower pressing roller; 321a, a first lower pressure roller; 321b and a second lower pressing roller; 322. a power unit; 322a, a first power unit; 322b power unit two; 41. a compression roller shaft; 42. a press roller arm; 43. a compression roller; 44. an elastic member; 45. a first circular ring; 46. a compression roller adjusting nut; 47. and a second circular ring.
Detailed Description
The invention discloses a rubber part stretching and feeding device, and a person skilled in the art can realize the appropriate improvement of parts by taking the contents as reference. It is expressly intended that all such similar substitutes and modifications which would be obvious to those skilled in the art are deemed to be included in the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
The following detailed description of the invention refers to specific embodiments thereof for better understanding by those skilled in the art.
The invention provides a rubber part stretching and feeding device, which comprises a feeding frame 1, a feeding device and a feeding device, wherein the feeding device is arranged on the feeding frame 1; the conveying mechanism 2 is mounted on the feeding frame 1; the differential stretching mechanism 3 is used for enabling the rubber component to enter the differential stretching mechanism 3 from the conveying mechanism 2; as shown in fig. 2, the differential stretching mechanism 3 includes a pair of first pressing portions 31 disposed in parallel in the moving direction of the rubber component, and a pair of second pressing portions 32 disposed above the first pressing portions 31, the height of the second pressing portions 32 is adjustable, and the second pressing portions 32 cooperate with the first pressing portions 31 to form a pressing space with a predetermined shape, and the rolling speed of the second pressing portion 32 located in front is greater than that of the second pressing portion 32 located in rear in the moving direction of the rubber component, so as to stretch the rubber component between the two pressing portions; and the compression roller mechanism 4 is used for enabling the stretched rubber component to enter the compression roller mechanism 4 and enabling the stretched rubber component to be attached to the forming drum 5.
As shown in fig. 2, the first nip portion 31 of the present invention includes: an upper press roller 311; and a height adjusting unit to which the upper press roller 311 is connected through an optical axis, and which adjusts a height between the first nip portion 31 and the second nip portion 32. In the embodiment shown in fig. 2, the height adjusting unit includes: a rack 312, the lower end of which is connected to the upper press roller 311; the gear 313 is meshed with the rack 312, and the rack 312 is driven to move up and down through the rotation of the gear 313; an adjusting shaft 314, the gear 313 being mounted on the adjusting shaft 314; and an adjusting member 315, where the adjusting member 315 is installed at an end of the adjusting shaft 314, and the adjusting member 315 rotates to drive the gear 313 to rotate through the adjusting shaft 314, so as to drive the rack 312 to move, thereby adjusting the height of the upper pressing roller 311, and in a specific embodiment, the adjusting member 315 is preferably an adjusting nut.
For the irregular-shaped rubber component, as shown in the embodiment shown in fig. 2, the first pressing part 32 of the present invention includes a plurality of upper pressing rollers 311 arranged in an array on the same horizontal plane, a pair of racks 312 are disposed at two ends of each upper pressing roller 311, a pair of gears 313 is disposed corresponding to the pair of racks 312, an adjusting shaft 314 is disposed corresponding to the pair of gears 313, the adjusting shaft 314 is mounted on the feeding frame 1 through the unthreaded hole, and an adjusting member 315 is mounted at one end of each adjusting shaft 314. According to the shapes of different rubber parts, the adjusting member 315 is rotated to adjust each upper press roll 15 to a desired height, so that the distance between each upper press roll 311 and the lower press roll of the second press-fit part 32 is matched with the shape of the half part.
In a specific embodiment, the lower end of the rack 312 has a fixing portion for fixing the upper platen, and the fixing portion may be designed in any shape, such as a semi-circle, a semi-ellipse, or a polygon. The upper pressure roller 311 may be installed between fixing portions of the two racks 312 by an optical axis and a stud (not shown).
In the embodiment shown in fig. 2, the differential stretching mechanism further includes a fixing plate 33, the fixing plate 33 is mounted on the feeding frame 1, and an accommodating groove 331 for accommodating the rack is formed in the fixing plate 33. In a preferred embodiment, the fixing plate 33 can be fixed to the material feeding frame 1 by bolts, a plurality of accommodating grooves are formed in the fixing plate 33, and the plurality of racks 312 are respectively located in the corresponding accommodating grooves. As shown in fig. 3(a), a guide groove 312a is formed on a side wall of the rack 312, a protrusion (not shown) is disposed in the receiving groove 331, and the protrusion slides in the guide groove 312a, so that the rack 312 can move smoothly, and the upper pressing roller 311 can be adjusted to a desired height. The height adjusting unit provided by the invention is used for adjusting the height of the upper press roll, and the pressure on each position of the rubber component is ensured to be uniform.
In a specific implementation, as shown in fig. 3(b), one end of the adjusting shaft 314 is hexagonal to mount the adjusting member, each side of the feeding frame 1 is correspondingly provided with a plurality of light holes, the adjusting shafts 314 are mounted on the feeding frame 1 through the light holes, and the light holes on one side are externally provided with hexagonal sunk grooves to limit the rotation of the adjusting member.
As shown in fig. 2, the second nip portion 32 of the present invention includes a lower press roller 321, the lower press roller 321 is installed on the feeding frame 1 through a light hole, a pair of lower press rollers 321 are driven by different power units 322 respectively to realize a rolling speed difference, the method comprises the following steps that by taking the moving direction of the rubber part, a front power unit is defined as a first power unit 322a, a rear power unit is defined as a second power unit 322b, the power units are preferably servo motors, a front lower pressure roller is a first lower pressure roller 321a, a rear lower pressure roller is a second lower pressure roller 321b, one ends of the first lower pressure roller 321a and the second lower pressure roller 321b are respectively connected with the first power unit 322a and the second power unit 322b with different rotating speeds through gears, the rotating speed of the first power unit 322a is larger than that of the second power unit 322b, the rotating speed of the first lower pressure roller 321a is larger than that of the second lower pressure roller 321b, and therefore the rubber part is stretched.
As shown in fig. 5 and 6, the platen roller mechanism 4 of the present invention includes: a platen roller shaft 41, the platen roller shaft 41 being mounted on the feeding stand 1; a compression roller arm 42, wherein one end of the compression roller arm 42 is connected with the compression roller shaft 41; and the pressing roller 43 is arranged at the other end of the pressing roller arm 42, and the pressing roller shaft 41 is rotated to enable the pressing roller 43 to be in contact with the forming drum 5 so as to complete the gluing of the glue component.
In the embodiment shown in fig. 5, an elastic member 44 is installed at the position of the press arm between the press arm 42 and the press roller shaft 41, and preferably, the elastic member 44 may be a spring.
In this embodiment, the pressure roller shaft 41 is provided with a plane, the plane is provided with a groove, and one end of the pressure roller arm 42 is located in the groove. Specifically, compression roller mechanism 4 is installed on pay- off frame 1, and 41 one end of compression roller axle is the hexagon shape for installation compression roller adjusting nut, and the compression roller axle passes through compression roller adjusting nut 46 fixed rotation angle, and it respectively has a unthreaded hole to go up work or material rest 1 both sides, and one of them side unthreaded hole has a hexagon heavy groove outward, is used for restricting compression roller adjusting nut to rotate. In a preferred embodiment, a plurality of grooves are formed in the compression roller shaft 41, a plurality of compression roller arms 42 are respectively positioned in the plurality of grooves of the compression roller shaft, one end of each compression roller arm 42 is provided with a first circular ring 45, the compression roller shaft 41 is provided with a second circular ring 47 at a position close to the groove, the compression roller arms are positioned in the corresponding grooves and connect the first circular rings 45 with the second circular rings 47 through bolts, and the other end of each compression roller arm 42 is provided with a compression roller 43 through a shaft. The rubber component is stretched to a certain length by the differential stretching mechanism and is pressed on the molding drum by the compression roller mechanism 4.
As shown in fig. 4, the conveying mechanism 2 of the present invention includes a plurality of transmission shafts 21 sequentially arranged, a conveyor belt 22 is mounted on the transmission shafts 21, one of the transmission shafts 21 is connected to a third power unit 24, and the conveying speed of the conveyor belt 22 is the same as the rolling speed of the second lower pressure roller 321 b. In the preferred embodiment, a transmission shaft 23 is arranged between the differential stretching mechanism and the transmission device and is used for supporting and transition.
The feeding frame 1 has a rectangular frame, iron plates are welded on both sides of the frame, and holes are drilled at the fixing positions of the iron plates to mount the transmission shaft 21, the transmission shaft 23, the lower press roller 321, the fixing plate 33, the adjusting shaft 314 and the press roller shaft 41.
During operation, the speeds of the first power unit 322a and the second power unit 322b are respectively set according to the half-size stretching ratio, the rotating speed of the first power unit 322a is larger than that of the second power unit 322b, and the rotating speeds of the third power unit 24 and the second power unit 322b are set to be the same. According to the shapes of different rubber parts, the height of each upper pressing roller 311 is adjusted by rotating the adjusting piece 315, the distance between each upper pressing roller and the lower pressing roller 321 is matched with the shape of the half part, and after the adjustment is finished, the adjusting piece 315 is pressed into a sinking groove on the feeding frame 1 to fix the height of the upper pressing roller 311. Similarly, after the roll adjustment nut 46 is pulled outward, the roll adjustment nut is turned to adjust the roll shaft 41 to rotate so that the roll 43 is properly brought into contact with the building drum. After the setting is finished, the rubber part is placed on the conveyor belt 22, the system is started, the rubber part enters a position between the upper pressing roller 311 and the second lower pressing roller 321b at the rear part at a certain speed, the rubber part enters a position between the upper pressing roller 311 and the first lower pressing roller 321a at the front part after receiving pressure, at the moment, the speed of the first lower pressing roller 321a is larger than that of the second lower pressing roller 321b, so that the half part between the pressing rollers is stretched, the stretching rate is directly related to the speed difference of the two lower pressing rollers, the rubber part is stretched and comes out of the first lower pressing roller 321a and is attached to the forming drum 5, and at the moment, the pressing roller 243 performs proper pressing on the rubber part to enable the rubber part to be attached to the forming drum 5.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a glue part tensile loading attachment which characterized in that includes:
a feeding frame;
the conveying mechanism is arranged on the feeding frame;
the rubber component enters the differential stretching mechanism from the conveying mechanism; the differential stretching mechanism comprises a pair of first pressing parts arranged in parallel in the moving direction of the rubber component and a pair of second pressing parts correspondingly arranged above the first pressing parts, the height of the second pressing parts is adjustable, the second pressing parts are matched with the correspondingly arranged first pressing parts to form a pressing space with a preset shape, and the rolling speed of the front second pressing part is greater than that of the rear second pressing part in the moving direction of the rubber component, so that the rubber component between the two pressing parts is stretched;
and the stretched rubber component enters the compression roller mechanism and is attached to the forming drum.
2. The adhesive part stretch-feeding device according to claim 1, wherein the first press-fit portion includes:
an upper compression roller;
and the upper press roll is connected with the height adjusting unit through an optical axis, and the height between the first pressing part and the second pressing part is adjusted by the height adjusting unit.
3. The adhesive part stretch-feeding device according to claim 2, wherein the height adjusting unit comprises:
the lower end part of the rack is connected with the upper compression roller;
the gear is meshed with the rack and drives the rack to move up and down through the rotation of the gear;
the gear is mounted on the adjusting shaft;
the adjusting piece is installed on the adjusting shaft and drives the gear to rotate through the adjusting shaft by rotating the adjusting piece.
4. The apparatus according to claim 3, wherein said differential stretching mechanism further comprises a fixing plate, said fixing plate is mounted on said feeding frame, and said fixing plate is provided with a receiving slot for receiving said rack.
5. The adhesive member stretching and feeding device according to claim 3, wherein the first pressing portion comprises a plurality of upper pressing rollers arranged in an array on the same horizontal plane, a pair of racks is disposed at two ends of each upper pressing roller, a pair of gears is disposed corresponding to the pair of racks, an adjusting shaft is disposed corresponding to the pair of gears, and an adjusting member is mounted at one end of each adjusting shaft.
6. The adhesive member stretch feeder according to claim 1 or 2, wherein the second nip portion includes lower rollers, and the lower rollers are driven by different power units to realize a difference in rolling speed.
7. The adhesive part stretch-feeding device according to claim 1, wherein the press roller mechanism comprises:
the compression roller shaft is arranged on the feeding frame;
one end of the compression roller arm is connected with the compression roller shaft;
and the compression roller is arranged at the other end of the compression roller arm, and the compression roller shaft is rotated to enable the compression roller to be in contact with the forming drum, so that the gluing of the rubber part is completed.
8. The adhesive member stretch feeder according to claim 7, wherein an elastic member is installed at a position of the press arm between the press arm and the press roller shaft; the press roller shaft is provided with a groove, and one end of the press roller arm is positioned in the groove.
9. The adhesive part stretching and feeding device according to claim 1, wherein the transmission mechanism comprises a plurality of transmission shafts arranged in sequence, the transmission shafts are provided with transmission belts, and one of the transmission shafts is connected with the power unit.
10. The apparatus for stretch-feeding rubber component as claimed in claim 1 or 9, wherein a transmission shaft for supporting and transition is further provided between said differential stretching mechanism and said transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111124067.2A CN113997618B (en) | 2021-09-24 | 2021-09-24 | Glue part stretching and feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111124067.2A CN113997618B (en) | 2021-09-24 | 2021-09-24 | Glue part stretching and feeding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113997618A true CN113997618A (en) | 2022-02-01 |
| CN113997618B CN113997618B (en) | 2024-01-30 |
Family
ID=79922172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111124067.2A Active CN113997618B (en) | 2021-09-24 | 2021-09-24 | Glue part stretching and feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113997618B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202517727U (en) * | 2012-04-28 | 2012-11-07 | 田建国 | Tread rubber evenly stretching device |
| JP2016190441A (en) * | 2015-03-31 | 2016-11-10 | 住友ゴム工業株式会社 | Tire molding device and tire molding method |
| CN106715104A (en) * | 2014-08-08 | 2017-05-24 | Vmi荷兰公司 | Stretching device for an apex filler strip for tire beads and apex handling system comprising the stretching device |
| KR20190067598A (en) * | 2017-12-07 | 2019-06-17 | 송원대학교산학협력단 | Apparatus for forming retread |
| KR102220755B1 (en) * | 2020-02-11 | 2021-02-26 | 주식회사 바구스 | Joint apparatus of tire tread |
-
2021
- 2021-09-24 CN CN202111124067.2A patent/CN113997618B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202517727U (en) * | 2012-04-28 | 2012-11-07 | 田建国 | Tread rubber evenly stretching device |
| CN106715104A (en) * | 2014-08-08 | 2017-05-24 | Vmi荷兰公司 | Stretching device for an apex filler strip for tire beads and apex handling system comprising the stretching device |
| JP2016190441A (en) * | 2015-03-31 | 2016-11-10 | 住友ゴム工業株式会社 | Tire molding device and tire molding method |
| KR20190067598A (en) * | 2017-12-07 | 2019-06-17 | 송원대학교산학협력단 | Apparatus for forming retread |
| KR102220755B1 (en) * | 2020-02-11 | 2021-02-26 | 주식회사 바구스 | Joint apparatus of tire tread |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113997618B (en) | 2024-01-30 |
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