CN112318911A - Seamless forming drum - Google Patents
Seamless forming drum Download PDFInfo
- Publication number
- CN112318911A CN112318911A CN202011160196.2A CN202011160196A CN112318911A CN 112318911 A CN112318911 A CN 112318911A CN 202011160196 A CN202011160196 A CN 202011160196A CN 112318911 A CN112318911 A CN 112318911A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- sliding
- seat
- guide
- sliding block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- B29D30/24—Drums
-
- 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
- B29D30/24—Drums
- B29D30/26—Accessories or details, e.g. membranes, transfer rings
Abstract
The invention discloses a seamless molding drum which comprises a shaft sleeve, a guide disc, a guide keyboard, a movable seat, a power mechanism, a sliding connecting rod seat, a spring guide rod, a spring, a fixed connecting rod seat, a first sliding block, a second sliding block, a short connecting rod, a long connecting rod, a large locking block, a small locking block, a limiting ring and a limiting ejector rod, wherein the shaft sleeve is arranged on the guide disc; the power unit drives the moving seat to slide along the shaft sleeve, the sliding connecting rod seat and the fixed connecting rod seat are pushed to synchronously move, the large locking block and the small locking block are driven to radially move along the guide keyboard, the speed of the second sliding block is higher than that of the first sliding block in the process, the second supporting arm can be in contact with the first supporting arm and pushes the first supporting arm to synchronously move, and when the moving seat is propped on the limiting ring, the circle enclosed by each large locking block and each small locking block is fixed and forms a locking circle. The position of the limiting ring can be adjusted by adjusting the limiting ejector rod, so that locking circles with different diameters can be formed, and the requirement for locking green tires with different specifications can be met.
Description
Technical Field
The invention relates to the field of tire manufacturing equipment, in particular to a seamless forming drum.
Background
In the production process of the tire, the tire blanks with the same rim size are influenced by factors such as process parameters, specification models, half part sizes and the like, and the sizes of the inner diameters of the bead openings have certain difference. The supporting diameter of the locking block of the existing seamless locking block technology is a fixed value due to structural characteristics, and when the supporting diameter of the inner diameter of the tire blank seam allowance and the supporting diameter of the locking block of the forming drum has large deviation, the locking block can not be supported in place or the tire blank seam allowance is not locked tightly, so that the forming quality of the tire blank is seriously influenced.
Disclosure of Invention
The invention aims to make up for the defects of the prior art and provides a seamless forming drum with a wide application range.
In order to solve the technical problems, the invention adopts the following technical scheme:
a seamless molding drum comprises a shaft sleeve, a guide disc, a guide keyboard, a moving seat, a power mechanism, a sliding connecting rod seat, a spring guide rod, a spring, a fixed connecting rod seat, a first sliding block, a second sliding block, a short connecting rod, a long connecting rod, a large locking block, a small locking block and a limiting ring; the shaft sleeve, the guide disc and the guide keyboard are fixedly connected together, the guide keyboard is coaxially sleeved at the end part of the shaft sleeve in a matching manner, and an annular guide groove is formed between the guide keyboard and the guide disc; the movable seat is sleeved on the shaft sleeve in a matched sliding mode and moves axially under the driving of the power mechanism, a flange is further formed at one end, away from the guide keyboard, of the movable seat, and a plurality of through holes are further formed in the flange in a uniformly distributed mode in the circumferential direction; the sliding connecting rod seats and the fixed connecting rod seats are multiple and are circumferentially and uniformly distributed on the outer wall of the moving seat at intervals; each fixed connecting rod seat is fixedly connected to the moving seat, each sliding connecting rod seat is movably connected to the moving seat through one spring guide rod and one spring, the first end of each spring guide rod is fixedly connected to one sliding connecting rod seat, the second end of each spring guide rod penetrates through one through hole and is connected with one limiting end cap, and each spring is sleeved on one spring guide rod and compressed between the flange and one limiting end cap; the first sliding blocks and the second sliding blocks are all multiple and are circumferentially and uniformly distributed in the annular guide groove at intervals; each first sliding block is hinged with one sliding connecting rod seat through one short connecting rod, each second sliding block is hinged with one fixed connecting rod seat through one long connecting rod, each first sliding block and each second sliding block can move in an expansion and contraction mode along the radial direction of the annular guide groove under the driving of the power mechanism, and the moving speed of each second sliding block under the driving of the corresponding long connecting rod is larger than that of each first sliding block under the driving of the corresponding short connecting rod; two first support arms which are symmetrically arranged are respectively arranged on two sides of each first sliding block, two second support arms which are symmetrically arranged are respectively arranged on two sides of each second sliding block, and each second support arm is positioned on the inner side of each first support arm; the large locking blocks and the small locking blocks are uniformly distributed in the circumferential direction at intervals, each large locking block is fixedly connected to the outer wall of the first sliding block, each small locking block is fixedly connected to the outer wall of the second sliding block, the diameter of a circle formed by the large locking blocks is larger than that of a circle formed by the small locking blocks in a completely contracted state, and the large locking blocks and the small locking blocks form a locking circle together in a completely expanded state; the limiting ring is arranged between the moving seat and the guide keyboard, and the position of the limiting ring is adjustably sleeved on the shaft sleeve in a matching manner; the power mechanism drives the moving seat to move axially and drives the sliding connecting rod seats and the fixed connecting rod seats to move, the short connecting rods and the long connecting rods drive the large locking blocks and the small locking blocks to move in an expanding and contracting mode, in the expanding and expanding process, when the sliding connecting rod seats and the fixed connecting rod seats move synchronously, the radial moving speed of the second sliding blocks is larger than that of the first sliding blocks, so that the outer wall of each second supporting arm can be in contact with the inner wall of the corresponding first supporting arm, the large locking blocks and the small locking blocks jointly form a circle, the moving seat continues to move under the driving of the power mechanism, the second supporting arms can push the corresponding first supporting arms to move synchronously, and the sliding connecting rod seats can overcome the acting force of the corresponding springs at the moment And moving relative to the moving seat, and enabling each large locking block and each small locking block to always form a circle together, until the moving seat is propped against the limiting ring, the circle formed by the large locking blocks and the small locking blocks is fixed and does not change, and a locking circle is formed.
Furthermore, the guide disc is coaxially arranged outside the shaft sleeve, an annular cavity is formed between the guide disc and the shaft sleeve, and the movable seat, the sliding connecting rod seats and the fixed connecting rod seats are arranged in the annular cavity.
Further, the seamless forming drum further comprises at least three limiting ejector rods which are uniformly distributed in the circumferential direction of the shaft sleeve, each limiting ejector rod penetrates through the keyboard in a threaded connection mode, one end of each limiting ejector rod is abutted against the end face, close to the keyboard, of the limiting ring, and the positions, on the shaft sleeve, of the limiting rings are adjusted through rotation of the limiting ejector rods.
Compared with the prior art, the invention has the beneficial effects that:
1. the position of the limiting ring can be adjusted to enable the large and small locking blocks on the seamless forming drum to form locking circles with different diameters, the application range of the seamless forming drum can be expanded, the seamless forming drum can adapt to the change of the diameter of a tire blank, the locking fixation of the tire blanks with different bead inner diameters can be better realized, and finally the tire blanks with qualified quality can be produced.
2. By expanding the application range of the seamless forming drum, the seamless forming drum is also beneficial to promoting more tire production enterprises to select the forming drum with the seamless structure form, and the upgrading and updating of industrial production equipment are accelerated.
3. The speed difference of the large and small locking blocks during expansion and contraction is the basic principle of realizing seamless supporting blocks, the contraction diameter and the supporting diameter of the large and small locking blocks are required to be fixed in order to realize the speed difference between the large and small locking blocks in the prior art, and compared with the prior art, the invention has the greatest characteristic that the working diameter is allowed to be adjusted within +/-5 mm according to the requirement, thereby solving the fatal defect of the prior art in the actual production.
Drawings
In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic perspective view of the present invention with the guiding plate and guiding keyboard removed;
FIG. 3 is a schematic structural view of the large and small locking blocks in the contracted state;
fig. 4 is a schematic structural view of the large locking piece and the small locking piece in the expanded state.
The device comprises a shaft sleeve 1, a guide disc 2, a guide keyboard 3, a moving seat 4, a sliding connecting rod seat 5, a spring guide rod 6, a limiting end cap 601, a spring 7, a fixed connecting rod seat 8, a first sliding block 9, a first supporting arm 901, a second sliding block 10, a second supporting arm 1001, a short connecting rod 11, a long connecting rod 12, a large locking block 13, a small locking block 14, a limiting ring 15 and a limiting ejector rod 16.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail so as not to obscure the embodiments of the invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
In the description of the present invention, the terms "inside", "outside", "longitudinal", "transverse", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Embodiments of the invention are described in further detail below with reference to the accompanying drawings:
referring to fig. 1 to 4, the seamless molding drum provided by the invention mainly comprises a shaft sleeve 1, a guide disc 2, a guide keyboard 3, a moving seat 4, a power mechanism (not shown), a sliding connecting rod seat 5, a spring guide rod 6, a spring 7, a fixed connecting rod seat 8, a first sliding block 9, a second sliding block 10, a short connecting rod 11, a long connecting rod 12, a large locking block 13, a small locking block 14, a limiting ring 15 and a limiting ejector rod 16.
As shown in fig. 1, the shaft sleeve 1, the guide plate 2 and the guide keyboard 3 are relatively fixed together. The guide disc 2 is of a cylindrical structure, the guide disc 2 is coaxially arranged outside the shaft sleeve 1, and an annular cavity is formed between the guide disc 2 and the shaft sleeve; the guide keyboard 3 is of a disc structure with a central hole, the inner diameter of the guide keyboard 3 is matched with the outer diameter of the shaft sleeve 1, the guide keyboard 3 and the shaft sleeve 1 are arranged at the end part of the shaft sleeve 1 and locked by bolts, a certain gap is reserved between the guide keyboard 3 and the guide keyboard 2, and an annular guide groove is formed by the gap.
A movable seat 4, a sliding connecting rod seat 5 and a fixed connecting rod seat 8 are arranged in the annular cavity.
Remove seat 4 and be tube-shape structure and its internal diameter and axle sleeve 1's external diameter phase-match, make to remove 4 slidable suit of seat on axle sleeve 1, remove seat 4 and can carry out axial displacement under power unit's drive, wherein, the first end of removing seat 4 (keep away from the one end of leading keyboard 3 promptly) passes through flange or bolt locking with power unit's output together, the first end of removing seat 4 still is formed with the flange, it has a plurality of through-holes and is used for cooperating the use with a plurality of spring guide arm 6 one-to-ones still to open the circumference equipartition on the flange, the second end of removing seat 4 is used for cooperating the use with spacing ring 15. In addition, preferably, the power mechanism is a cylinder.
The sliding connecting rod seat 5 and the fixed connecting rod seat 8 are both multiple and are circumferentially and uniformly distributed on the outer wall of the movable seat 4 at intervals. Each fixed connecting rod seat 8 is fixedly connected to the movable seat 4, and specifically, each fixed connecting rod seat 8 is clamped between the outer wall of the movable seat 4 and the flange and locked with the flange through bolts; each sliding connecting rod seat 5 is movably connected to the outer wall of the movable seat 4 through a spring guide rod 6 and a spring 7 respectively, each sliding connecting rod seat 5 can move axially relative to the movable seat 4, specifically, the plurality of spring guide rods 6 are uniformly distributed around the circumference of the movable seat 4, the central axes of the plurality of spring guide rods 6 are also arranged in parallel with the central axis of the movable seat 4, the first end of each spring guide rod 6 is respectively in threaded connection with one sliding connecting rod seat 5, the second end of each spring guide rod 6 respectively penetrates through the corresponding through hole and is connected with a limiting end cap 601, each spring 7 is respectively sleeved on one spring guide rod 6 and is compressed between a flange and the limiting end cap 601, and each sliding connecting rod seat 5 is tightly attached to the flange under the acting force of the corresponding spring 7.
The first slide block 9, the second slide block 10, the short connecting rod 11, the long connecting rod 12, the large locking block 13 and the small locking block 14 are arranged in the annular guide groove.
As shown in fig. 3 and 4, in the fully contracted state, due to the different distances between the large locking piece 13 and the small locking piece 14 and the central axis of the shaft sleeve 1 (the initial positions of the large locking piece 13 and the small locking piece 14 are different), the diameter of the circle surrounded by each large locking piece 13 is larger than the diameter of the circle surrounded by each small locking piece 14, that is, each small locking piece 14 is located inside each large locking piece 13, wherein in order to make the large locking piece 13 and the small locking piece 14 have different initial positions, the structural dimensions and the installation positions of the short connecting rod 11 and the long connecting rod 12 can be designed and adjusted to meet the requirements, and in the fully expanded state, it is further ensured that each large locking piece 13 and each small locking piece 14 can jointly surround a locking circle, which is a circle formed by connecting lines of the arc high points of each large locking piece 13 and each small locking piece 14.
The limiting ring 15 mainly limits the axial movement of the movable seat 4. Specifically, the limiting ring 15 is disposed between the moving seat 4 and the guide keyboard 3 and is adjustably sleeved on the shaft sleeve 1, wherein the inner diameter of the limiting ring 15 is matched with the outer diameter of the shaft sleeve 1, so that the limiting ring 15 can be slidably sleeved on the shaft sleeve 1. The spacing ring 15 still cooperatees with three spacing ejector pin 16 and uses to be used for realizing the position adjustment of spacing ring 15, wherein, three spacing ejector pin 16 centers on 1 circumference equipartition setting of axle sleeve, and each spacing ejector pin 16 runs through threaded connection respectively and leads on keyboard 3 and the one end of each spacing ejector pin 16 all pushes up on the terminal surface that spacing ring 15 is close to and leads keyboard 3, can promote spacing ring 15 through rotatory each spacing ejector pin 16 and slide on axle sleeve 1, in order to realize the adjustment of spacing ring 15 position.
The action principle of the invention is as follows: as shown in fig. 1, when it needs to be expanded, the power mechanism drives the movable base 4 to move rightward along the axial direction of the shaft sleeve 1, and pushes each sliding link base 5 and each fixed link base 8 to move rightward synchronously, each large locking block 13 and each small locking block 14 are driven by the corresponding short link 11 and long link 12 and move outward along the radial direction of the guide keyboard 3, because the radial moving speed of each second slider 10 is greater than the radial moving speed of each first slider 9, the outer wall of each second supporting arm can contact with the inner wall of the corresponding first supporting arm 1001, and at this time, each large locking block 13 and each small locking block 14 together form a circle, and then the movable base 4 continues to move under the drive of the power mechanism, each second supporting arm 1001 pushes the corresponding first supporting arm 901 to move synchronously, and at this time, each sliding link base 5 will move axially relative to the movable base 4 against the acting force of the corresponding spring 7, in the process, each large locking piece 13 and each small locking piece 14 continuously expand outwards and can always form a circle together, until the movable base 4 is pressed against the limiting ring 15, the circle formed by the large locking pieces 13 and the small locking pieces 14 is fixed and forms a locking circle. When the telescopic device needs to be contracted, the movable seat 4 is driven reversely by the power mechanism.
The position of the limiting ring 15 can be adjusted by adjusting the limiting ejector rod 16, so that the movement stroke of the movable seat 4 is changed, and locking circles with different diameters can be formed, so that the tire blanks with different inner diameters of the seam allowance can be locked and fixed.
In summary, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can propose other embodiments within the technical teaching of the present invention, but these embodiments are included in the scope of the present invention.
Claims (3)
1. A seamless molding drum is characterized by comprising a shaft sleeve, a guide disc, a guide keyboard, a movable seat, a power mechanism, a sliding connecting rod seat, a spring guide rod, a spring, a fixed connecting rod seat, a first sliding block, a second sliding block, a short connecting rod, a long connecting rod, a large locking block, a small locking block and a limiting ring;
the shaft sleeve, the guide disc and the guide keyboard are fixedly connected together, the guide keyboard is coaxially sleeved at the end part of the shaft sleeve in a matching manner, and an annular guide groove is formed between the guide keyboard and the guide disc;
the movable seat is sleeved on the shaft sleeve in a matched sliding mode and moves axially under the driving of the power mechanism, a flange is further formed at one end, away from the guide keyboard, of the movable seat, and a plurality of through holes are further formed in the flange in a uniformly distributed mode in the circumferential direction;
the sliding connecting rod seats and the fixed connecting rod seats are multiple and are circumferentially and uniformly distributed on the outer wall of the moving seat at intervals; each fixed connecting rod seat is fixedly connected to the moving seat, each sliding connecting rod seat is movably connected to the moving seat through one spring guide rod and one spring, the first end of each spring guide rod is fixedly connected to one sliding connecting rod seat, the second end of each spring guide rod penetrates through one through hole and is connected with one limiting end cap, and each spring is sleeved on one spring guide rod and compressed between the flange and one limiting end cap;
the first sliding blocks and the second sliding blocks are all multiple and are circumferentially and uniformly distributed in the annular guide groove at intervals; each first sliding block is hinged with one sliding connecting rod seat through one short connecting rod, each second sliding block is hinged with one fixed connecting rod seat through one long connecting rod, each first sliding block and each second sliding block can move in an expansion and contraction mode along the radial direction of the annular guide groove under the driving of the power mechanism, and the moving speed of each second sliding block under the driving of the corresponding long connecting rod is larger than that of each first sliding block under the driving of the corresponding short connecting rod; two first support arms which are symmetrically arranged are respectively arranged on two sides of each first sliding block, two second support arms which are symmetrically arranged are respectively arranged on two sides of each second sliding block, and each second support arm is positioned on the inner side of each first support arm;
the large locking blocks and the small locking blocks are uniformly distributed in the circumferential direction at intervals, each large locking block is fixedly connected to the outer wall of the first sliding block, each small locking block is fixedly connected to the outer wall of the second sliding block, the diameter of a circle formed by the large locking blocks is larger than that of a circle formed by the small locking blocks in a completely contracted state, and the large locking blocks and the small locking blocks form a locking circle together in a completely expanded state;
the limiting ring is arranged between the moving seat and the guide keyboard, and the position of the limiting ring is adjustably sleeved on the shaft sleeve in a matching manner;
the power mechanism drives the moving seat to move axially and drives the sliding connecting rod seats and the fixed connecting rod seats to move, the short connecting rods and the long connecting rods drive the large locking blocks and the small locking blocks to move in an expanding and contracting mode, in the expanding and expanding process, when the sliding connecting rod seats and the fixed connecting rod seats move synchronously, the radial moving speed of the second sliding blocks is larger than that of the first sliding blocks, so that the outer wall of each second supporting arm can be in contact with the inner wall of the corresponding first supporting arm, the large locking blocks and the small locking blocks jointly form a circle, the moving seat continues to move under the driving of the power mechanism, the second supporting arms can push the corresponding first supporting arms to move synchronously, and the sliding connecting rod seats can overcome the acting force of the corresponding springs at the moment And moving relative to the moving seat, and enabling each large locking block and each small locking block to always form a circle together, until the moving seat is propped against the limiting ring, the circle formed by the large locking blocks and the small locking blocks is fixed and does not change, and a locking circle is formed.
2. Seamless building drum according to claim 1, wherein the guiding discs are coaxially arranged outside the shaft sleeve and between them an annular cavity is formed, in which the moving seats, the sliding link seats and the fixed link seats are placed.
3. The seamless molding drum according to claim 1, further comprising at least three limiting ejector rods uniformly distributed around the circumference of the shaft sleeve, wherein each limiting ejector rod is respectively connected to the guide keyboard through a thread, one end of each limiting ejector rod is further respectively abutted to an end surface of the limiting ring close to the guide keyboard, and the position of the limiting ring on the shaft sleeve is adjusted by rotating each limiting ejector rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160196.2A CN112318911A (en) | 2020-10-27 | 2020-10-27 | Seamless forming drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160196.2A CN112318911A (en) | 2020-10-27 | 2020-10-27 | Seamless forming drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112318911A true CN112318911A (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011160196.2A Pending CN112318911A (en) | 2020-10-27 | 2020-10-27 | Seamless forming drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112318911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023060861A1 (en) * | 2021-10-12 | 2023-04-20 | 天津赛象科技股份有限公司 | Working diameter-variable building drum |
-
2020
- 2020-10-27 CN CN202011160196.2A patent/CN112318911A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023060861A1 (en) * | 2021-10-12 | 2023-04-20 | 天津赛象科技股份有限公司 | Working diameter-variable building drum |
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