CN215704288U - Half drum device and tire building drum - Google Patents
Half drum device and tire building drum Download PDFInfo
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- CN215704288U CN215704288U CN202121470233.XU CN202121470233U CN215704288U CN 215704288 U CN215704288 U CN 215704288U CN 202121470233 U CN202121470233 U CN 202121470233U CN 215704288 U CN215704288 U CN 215704288U
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- sealing portion
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- outer shaft
- supporting block
- drum device
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Abstract
The utility model relates to the field of tire forming equipment, and discloses a half-drum device and a tire forming drum. The half-drum device comprises an outer shaft, a bead locking assembly and a capsule; the tire bead locking assembly comprises a supporting block, a fixed disc and a fixed ring, wherein the supporting block can move along the radial direction of the outer shaft; the capsule includes first fixed part, the sealing portion of buckling and second fixed part, and first fixed part is connected with the supporting shoe, and the one end and the first fixed part of the sealing portion of buckling are connected, and the other end and the second fixed part of the sealing portion of buckling are connected, and the second fixed part clamp is located between solid fixed ring and the fixed disk, and the sealing portion of buckling clamp is located between supporting shoe and the fixed disk, and when the supporting shoe was along the radial displacement of outer axle, the sealing portion of buckling can be by tensile deformation. The utility model has good sealing effect, is not influenced by the size change of the inner diameter of the tire ring, avoids the phenomenon of air leakage caused by poor sealing effect of the bladder in the process of inflating and turning up the tire body after the supporting block is supported, and improves the molding quality of the tire.
Description
Technical Field
The utility model relates to the field of tire forming equipment, in particular to a half-drum device and a tire forming drum.
Background
As shown in fig. 1 and 2, in the prior art, the sealing performance of the tire building drum at the position of the bead lock block 100 ' can affect the tire building quality, and a bladder 200 ' needs to be installed at the radial outer side of the bead lock block 100 ' to prevent gas leakage during the inflation and the turn-up of the tire body. The existing sealing mode of the bladder 200 ' generally realizes radial sealing by extruding the bladder 200 ' through the bead lock block 100 ' and the fixing ring 300 ', however, when tires with different specifications are formed by a tire forming drum, the distance between the bead lock block 100 ' and the fixing ring 300 ' is also different, so that one end of the bladder 200 ' cannot be extruded effectively all the time to realize sealing. When the bead lock block 100 'is lifted, the bladder 200' cannot be completely sealed, so that a slight air leakage phenomenon occurs, which affects the tire molding quality.
SUMMERY OF THE UTILITY MODEL
Based on the above problems, the present invention is directed to a half-drum device, which has a good sealing effect, is not affected by the change of the inner diameter of a bead, avoids the occurrence of air leakage during inflation, and improves the tire molding quality.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a half drum apparatus comprising:
the outer shaft is sleeved outside the main shaft;
the tire bead locking assembly comprises a supporting block, a fixed disc and a fixed ring, the supporting block can move along the radial direction of the outer shaft, the fixed disc is sleeved outside the outer shaft and is attached to the supporting block, and the fixed ring is arranged on the fixed disc;
the capsule comprises a first fixing part, a bending sealing part and a second fixing part, wherein the first fixing part is connected with the supporting block, one end of the bending sealing part is connected with the first fixing part, the other end of the bending sealing part is connected with the second fixing part, the second fixing part is clamped between the fixing ring and the fixing disc, the bending sealing part is clamped between the supporting block and the fixing disc, and the bending sealing part can be stretched and deformed when the supporting block moves along the radial direction of the outer shaft.
In a preferred embodiment of the half drum device according to the present invention, the bending direction of the bent seal portion is perpendicular to the axial direction of the outer shaft.
In a preferred embodiment of the half drum device according to the present invention, the bent seal portion has a U-shaped cross-section.
In a preferred embodiment of the half drum device according to the present invention, the cross-sectional surface of the bent seal portion after the tensile deformation is stepped.
As a preferable aspect of the half drum device of the present invention, the support block is provided with an installation groove, and the first fixing portion is clamped in the installation groove.
As a preferable scheme of the half drum device of the present invention, a positioning groove is provided in the mounting groove, and a positioning block fitted with the positioning groove is provided on the first fixing portion.
In a preferred embodiment of the half drum device according to the present invention, the first fixing portion, the bent seal portion, and the second fixing portion are integrally formed.
In a preferred embodiment of the half drum device according to the present invention, the first fixing portion, the bent sealing portion, and the second fixing portion are integrally joined.
As a preferable scheme of the half-drum device of the present invention, the bead locking assembly further includes a guiding disc and a piston, the guiding disc is sleeved outside the outer shaft, the supporting block is clamped between the guiding disc and the fixed disc, the piston is slidably disposed on the outer shaft, the piston is matched with the supporting block through an inclined plane, and the piston is moved in the axial direction of the outer shaft and can drive the supporting block to move in the radial direction of the outer shaft.
The utility model also aims to provide the tire building drum which has good sealing effect, is not influenced by the size change of the inner diameter of the tire bead, avoids the phenomenon of air leakage in the inflating process and improves the tire building quality.
A tyre building drum comprises a main shaft and two half-drum devices arranged on the main shaft.
The utility model has the beneficial effects that:
according to the semi-drum device and the tire forming drum provided by the utility model, when the supporting block moves from a falling state to a supporting state along the radial direction of the outer shaft, the supporting block drives the bending sealing part through the first fixing part of the bladder, the second fixing part is clamped between the fixing ring and the fixing disc, the second fixing part is fixed, and the bending sealing part is stretched and deformed to adapt to the supporting and falling of the supporting block, so that the bladder is prevented from being excessively stretched and damaged, the phenomenon of air leakage caused by poor sealing effect of the bladder in the process of inflating and turning up the tire body after the supporting block is supported is avoided, the tire forming quality is improved, the subsequent maintenance cost is reduced, the bending sealing part realizes an axial sealing mode along the outer shaft under the clamping action of the supporting block and the fixing disc, the sealing effect is good, the sealing effect is not influenced by the size change of the inner diameter of the tire ring, and the application range is wider.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art drum half assembly;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic diagram of the construction of a half drum apparatus (with support blocks returned) according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the structure at B in FIG. 3;
FIG. 5 is a schematic structural view of a half drum apparatus (with support blocks braced) according to an embodiment of the present invention;
fig. 6 is a schematic diagram of the structure at C in fig. 5.
In the figure:
100' -bead lock; 200' -capsules; 300' -a retaining ring;
1-an outer shaft; 2-a bead locking assembly; 3-capsule preparation;
21-a support block; 22-fixed disk; 23-a fixed ring; 24-a guiding disc; 25-a piston;
31-a first fixed part; 311-a positioning block; 32-bending the sealing part; 33-a second fixed part;
100-main axis.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 3 to 6, the present embodiment provides a drum half apparatus including an outer shaft 1, a bead lock assembly 2, and a bladder 3. The outer shaft 1 is sleeved outside the main shaft 100, the bead locking assembly 2 is used for radially supporting a bead, and the bead locking assembly 2 comprises a supporting block 21, a fixed disc 22 and a fixed ring 23. The supporting block 21 can move along the radial direction of the outer shaft 1, the fixed disk 22 is sleeved outside the outer shaft 1 and is attached to the supporting block 21, and the fixing ring 23 is arranged on the fixed disk 22.
The capsule 3 comprises a first fixing portion 31, a bent sealing portion 32 and a second fixing portion 33. The first fixing portion 31 is connected to the supporting block 21, one end of the bending sealing portion 32 is connected to the first fixing portion 31, the other end of the bending sealing portion 32 is connected to the second fixing portion 33, the second fixing portion 33 is axially clamped between the fixing ring 23 and the fixing disc 22, and the bending sealing portion 32 is axially and radially clamped between the supporting block 21 and the fixing disc 22.
When the support block 21 moves in the radial direction of the outer shaft 1, the bent seal portion 32 can be tensile-deformed. When the supporting block 21 moves from a falling state (as shown in fig. 3) to a supporting state (as shown in fig. 5) along the radial direction of the outer shaft 1, the supporting block 21 drives the bending sealing portion 32 through the first fixing portion 31 of the bladder 3, because the second fixing portion 33 is clamped between the fixing ring 23 and the fixing disc 22, the second fixing portion 33 is fixed, the bending sealing portion 32 is stretched and deformed (as shown in fig. 6) to adapt to the supporting and falling of the supporting block 21, the bladder 3 is prevented from being excessively stretched and damaged, and the phenomenon of air leakage caused by poor sealing effect of the bladder 3 in the process of inflating and turning up the tire body after the supporting block 21 is supported is avoided, so that the tire forming quality is improved.
As shown in fig. 4, the bending direction of the bending sealing portion 32 is perpendicular to the axial direction of the outer shaft 1, and the bending sealing portion 32 realizes an axial sealing mode along the outer shaft 1 under the clamping action of the supporting block 21 and the fixed disk 22, so that the sealing effect is good, the sealing effect is not affected by the change of the inner diameter of the bead, and the application range is wider. Optionally, the cutting surface of the bent sealing part 32 is in a U shape, so that the processing and manufacturing difficulty of the capsule 3 is reduced, and meanwhile, a better sealing effect can be achieved. In other embodiments, the cutting plane of the bent sealing portion 32 may also be a labyrinth structure, further improving the axial sealing performance.
As shown in fig. 6, the cross-sectional surface of the bent sealing portion 32 after stretching deformation is stepped, and the bent sealing portion 32 is adapted to be supported and fallen back when the U-shaped bent sealing portion 32 is deformed into the stepped shape, so that the capsule 3 is prevented from being excessively stretched and damaged, and air leakage is avoided.
To facilitate the installation of the first fixing portion 31, optionally, a mounting groove (not shown) is disposed on the supporting block 21, and the first fixing portion 31 is clamped in the mounting groove. To facilitate positioning the first fixing portion 31, optionally, a positioning groove (not shown) is disposed in the mounting groove, and a positioning block 311 is disposed on the first fixing portion 31 and is engaged with the positioning groove.
In the present embodiment, the first fixing portion 31, the bending sealing portion 32 and the second fixing portion 33 are integrally formed, so that the overall sealing performance of the capsule 3 is improved. In other embodiments, the first fixing portion 31, the bent sealing portion 32 and the second fixing portion 33 can also be connected together in a splicing manner, so as to facilitate processing and manufacturing.
The tire bead locking assembly 2 may further include a guiding disc 24 and a piston 25, the guiding disc 24 is sleeved outside the outer shaft 1, the supporting block 21 is clamped between the guiding disc 24 and the fixing disc 22, the piston 25 is slidably disposed on the outer shaft 1, the piston 25 and the supporting block 21 are matched through an inclined plane, and the piston 25 is moved in the axial direction of the outer shaft 1 and can drive the supporting block 21 to move in the radial direction of the outer shaft 1. The piston 25 is driven to move along the axial direction of the outer shaft 1 in a pneumatic mode, and the piston 25 is matched with the supporting block 21 through an inclined surface, so that the piston 25 provides an outward supporting force for the supporting block 21 and drives the supporting block 21 to move along the radial direction of the outer shaft 1.
The half drum device that this embodiment provided has realized the axial seal mode along outer axle 1, and is sealed effectual, and sealed effect does not receive the influence of child circle internal diameter size change, and application scope is wider, has avoided capsule 3 overstretching to damage, has avoided carrying out the matrix behind supporting shoe 21 props up and has aerifyd the turn-up in-process, because the capsule 3 is sealed the phenomenon that the effect is not good and take place the gas leakage, has improved the tire shaping quality, has reduced follow-up maintenance cost.
The present embodiments also provide a tire building drum that can be a run-flat tire building drum for use in building run-flat tires, as well as for use in the building of other types of tires. The tire building drum further comprises a hollow cylindrical main shaft 100, two shaft seats are axially arranged on the main shaft 100 at intervals, a forming area is formed between the two shaft seats, two half drum devices which are symmetrically arranged around the main shaft 100 in the left-right direction are formed in the forming area, the half drum devices are the half drum devices, the sealing effect of the tire building drum is good, the influence of the size change of the inner diameter of a tire ring is avoided, the air leakage phenomenon in the inflating process is avoided, and the tire building quality is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A semi-drum device, comprising:
the outer shaft (1) is sleeved outside the main shaft (100);
the tire bead locking assembly (2) comprises a supporting block (21), a fixed disc (22) and a fixed ring (23), wherein the supporting block (21) can move along the radial direction of the outer shaft (1), the fixed disc (22) is sleeved outside the outer shaft (1) and is attached to the supporting block (21), and the fixed ring (23) is arranged on the fixed disc (22);
capsule (3), including first fixed part (31), buckle sealing portion (32) and second fixed part (33), first fixed part (31) with supporting shoe (21) are connected, the one end of buckle sealing portion (32) with first fixed part (31) are connected, the other end of buckle sealing portion (32) with second fixed part (33) are connected, second fixed part (33) press from both sides and locate fixed ring (23) with between fixed disk (22), buckle sealing portion (32) press from both sides and locate supporting shoe (21) with between fixed disk (22), supporting shoe (21) are followed when the radial displacement of outer axle (1), buckle sealing portion (32) can be tensile deformation.
2. Half drum device according to claim 1, wherein the bending direction of the bent sealing portion (32) is perpendicular to the axial direction of the outer shaft (1).
3. Semi-drum device according to claim 1, characterized in that the cross-section of the folded sealing portion (32) is U-shaped.
4. Semi-drum device according to claim 3, characterized in that the cross section of the bent sealing part (32) after the tensile deformation is stepped.
5. Semi-drum device according to claim 1, characterized in that said support block (21) is provided with an installation groove in which said first fixing portion (31) is blocked.
6. Semi-drum device according to claim 5, characterized in that a positioning slot is provided in said mounting groove, and a positioning block (311) cooperating with said positioning slot is provided on said first fixing portion (31).
7. Half drum device according to claim 1, wherein said first fixing portion (31), said bent sealing portion (32) and said second fixing portion (33) are integrally formed.
8. Half drum device according to claim 1, wherein said first fixing portion (31), said bent sealing portion (32) and said second fixing portion (33) are spliced together.
9. Semi-drum device according to any one of claims 1 to 8, characterized in that the bead lock assembly (2) further comprises a guiding disc (24) and a piston (25), the guiding disc (24) is sleeved outside the outer shaft (1), the supporting block (21) is clamped between the guiding disc (24) and the fixed disc (22), the piston (25) is slidably arranged on the outer shaft (1), the piston (25) and the supporting block (21) are matched through an inclined surface, and moving the piston (25) in the axial direction of the outer shaft (1) can drive the supporting block (21) to move in the radial direction of the outer shaft (1).
10. Tyre building drum, comprising a main shaft (100) and two half-drum devices according to any one of claims 1-9 arranged on the main shaft (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470233.XU CN215704288U (en) | 2021-06-30 | 2021-06-30 | Half drum device and tire building drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470233.XU CN215704288U (en) | 2021-06-30 | 2021-06-30 | Half drum device and tire building drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215704288U true CN215704288U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121470233.XU Active CN215704288U (en) | 2021-06-30 | 2021-06-30 | Half drum device and tire building drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215704288U (en) |
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2021
- 2021-06-30 CN CN202121470233.XU patent/CN215704288U/en active Active
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