A two-part mould for a patterned ring which facilitates the replacement of the patterned ring

Abstract

The utility model relates to tire mould technical field, concretely relates to a two half mould convenient to change pattern ring, the technical problem that the utility model wants to solve is in overcoming the defect of inconvenient dismounting replacement in the prior art, mainly is realized through following technical scheme: a two half mould convenient to change pattern ring, including two half mould body, two replacement rings and core, two half mould body, two replacement rings and core are coaxial and set up and constitute the cavity inside, and half mould body and replacement ring are all up and down set and symmetrical in structure, and the end face of half mould body and replacement ring contact is round transition, a plurality of heat exchange holes are set up in half mould body, and the separation piece that half mould body end face is close to the side wall is provided with corresponding replacement ring, the separation piece includes the abutment plate and the movable column, and the replacement ring is convenient to dismount and installs the firm positioning, ensures installation in place to guarantee the quality of vulcanization tire, and the heat exchange hole is convenient for the heat preservation or cooling of tire mould.

Description

Technical Field

[0001] This utility model relates to the field of tire mold technology, specifically to a two-half mold that facilitates the replacement of tread rings. Background Technology

[0002] Tire molds are commonly used equipment for making tires. Rubber raw materials are injected into the mold and vulcanized at high temperature. According to the shape of the cavity inside the mold, the tire product is made. Among them, the two-half tire mold is an essential piece of equipment for tire forming.

[0003] Existing tire mold manufacturing methods involve inserting steel sheets onto the tread block body through extrusion or inverted casting, or using EDM or direct engraving to directly form the steel sheets onto the tread block substrate. However, the tread patterns produced by these processes cannot meet the requirements of frequent changes. When changing to tires with different tread patterns, new molds need to be manufactured, resulting in long production times and hindering rapid upgrades. Even some tire molds that allow for tread ring replacement often rely solely on screw connections, which may lead to inaccurate positioning of the upper and lower mold bodies or improper installation of the tread ring, resulting in deformation of the internal cavity surface. Furthermore, the tread ring may be difficult to remove and replace after installation. Additionally, detachable tread rings are not conducive to the arrangement of insulation or cooling structures within the tire mold. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defects of the prior art that are inconvenient to disassemble and replace, thereby providing a two-half mold that is easy to replace the pattern ring.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A two-part mold for easy replacement of patterned rings includes two mold halves, two replacement rings, and a core. The two mold halves, two replacement rings, and the core are all coaxially arranged and form cavities inside. The two mold halves and two replacement rings are arranged vertically and symmetrically. The end faces of the mold halves that contact the replacement rings are rounded. The middle of the mold halves and the core are provided with coaxial operating holes along the axis. The inner ring of the mold halves fits into the outer ring of the replacement rings, and the replacement rings are detachably connected to the mold halves. The inner ring of the replacement rings is provided with raised patterns, and the contact surface of the two replacement rings is the parting surface.

[0006] By adopting the above technical solution, two half-molds, two replacement rings, and a core constitute the cavity, within which a car tire is vulcanized. The replacement rings are replaced according to different tire tread patterns, improving the adaptability of the two half-molds and flexibly responding to the tire market's demand for different tread patterns. An additional separation component facilitates the disassembly of the replacement ring / tread ring, and multiple positioning structures ensure the replacement ring is properly positioned and fixed, guaranteeing proper installation and thus ensuring the quality of the vulcanized tire.

[0007] Furthermore, the replacement ring and the side of the half mold body are provided with a plurality of fixing screws that penetrate the side wall of the half mold body and are fixed to the side wall of the replacement ring. The axis of the fixing screw is arranged radially along the half mold body and the fixing screws are also arranged in a circumferential array along the half mold body. The end faces of the replacement ring that are far apart from each other and the corresponding end faces of the half mold body are also fixed by a plurality of mounting screws. The axis of the mounting screw is arranged axially along the half mold body and the mounting screws are also arranged in a circumferential array along the half mold body.

[0008] By adopting the above technical solution, the fixing screws fix the side wall of the half mold body and the side wall of the replacement ring, and the mounting screws fix the end face of the half mold body and the end face of the replacement ring. The setting of multiple screws ensures the connection strength and achieves stable fit, avoiding loosening during use.

[0009] Furthermore, each of the half-mold bodies has multiple heat exchange holes near the outer side of the replacement ring. The heat exchange holes are arranged in a circumferential array along the side wall of the half-mold body. The heat exchange holes are interconnected, and each half-mold body has an inlet hole on its outer surface. The inlet hole is mounted opposite to the side wall of the half-mold body and communicates with the heat exchange holes. The position of the heat exchange hole avoids the position of the corresponding fixing screw.

[0010] By adopting the above technical solution, the inlet hole and the heat exchange hole are connected, and cooling water or heat preservation liquid can be injected to achieve cooling or heat preservation of the car tire in the cavity. The structure is simple and easy to operate. The heat exchange hole avoids the position of the fixing screw to prevent the fixing screw from being affected by the liquid inside the heat exchange hole. The heat exchange hole can also reduce the weight of the half mold body without affecting the structural strength of the half mold body and reduce the transfer pressure.

[0011] Furthermore, the two adjacent end faces of the two half-molds are provided with receiving grooves corresponding to the replacement rings, and the two adjacent end faces of the two replacement rings are each provided with a placement ring. At the parting surface, the half-molds and replacement rings at the upper and lower ends are also provided with positioning plate rings. The positioning plate rings are fixed to the corresponding half-molds and replacement rings by connecting screws. The connecting screws on the two positioning plate rings are staggered. Both positioning plate rings are also provided with positioning grooves, and the positioning grooves are respectively provided with corresponding connecting screws.

[0012] By adopting the above technical solution, positioning rings are set to further reinforce the semi-mold body and the replacement ring, and the two positioning rings are positioned to each other to achieve precise installation of the tire mold.

[0013] Furthermore, the two replacement rings have annular inserts extending from their far-away end faces. The inserts are coaxially arranged with the replacement rings and their inner and outer diameters are both smaller than the inner and outer diameters of the corresponding replacement rings. The half-mold body has a matching annular slot for each insert.

[0014] By adopting the above technical solution, the annular insert and the annular slot work together to fix the replacement ring and the half mold body. The fixation is achieved by the additional extension, which reduces the impact on the inside of the cavity and avoids affecting the molding of the tire structure.

[0015] Furthermore, each slot has a corresponding insert block with a separator. Two separators are symmetrically arranged on each half-mold body. The separators are installed on the opposite ends of the two half-mold bodies and are close to the side walls of the half-mold bodies. Each separator includes a stop plate and a movable column. The stop plate is rotatably installed in the slot. The axis of rotation of the stop plate is perpendicular to the axis of the half-mold body. The stop plate is normally in a horizontal state. The end of the stop plate near the center of the half-mold body abuts against the insert block. The movable column is hinged to the other end of the stop plate and is perpendicular to the stop plate. The axis of the movable column is parallel to the axis of the half-mold body.

[0016] Furthermore, the slot extends away from the center of the half-mold body to accommodate the separable part, and the half-mold body end face is provided with a vertically oriented movable hole corresponding to the movable column; the slot is also provided with a clearance bevel corresponding to the abutment plate.

[0017] By adopting the above technical solution, two separate parts are symmetrically arranged on each half mold body. When the replacement ring is replaced, the movement of the movable column causes the insert block and slot to loosen, thereby making it easier to remove the replacement ring. This avoids the tight connection after the pattern ring is installed, which makes it difficult to apply force and remove.

[0018] Furthermore, a retaining cap is screwed onto the movable hole, and the retaining cap is arranged axially along the movable hole and abuts against the end of the movable column after being screwed on.

[0019] By adopting the above technical solution, the sealing cover can cover the movable column and movable hole, reducing accidental contact during the use of the tire mold and avoiding affecting the normal operation of the tire mold.

[0020] In summary, the technical solution of this utility model has the following advantages: 1. The present invention provides a two-part mold that facilitates the replacement of tread rings. The replacement rings can be changed according to different tire tread patterns, thereby improving the adaptability of the two-part mold and flexibly responding to the tire market's demand for different tread patterns.

[0021] 2. The two halves of the mold provided by this utility model facilitate the replacement of the tread ring. The additional separation part facilitates the disassembly of the replacement ring-tread ring, and the installation of the replacement ring is positioned and fixed through multiple positioning structures to ensure proper installation and thus guarantee the quality of the vulcanized tire.

[0022] 3. The two-half mold provided by this utility model is easy to replace the tread ring. The inlet hole and the heat exchange hole are connected to allow the injection of cooling water or heat preservation liquid to achieve the cooling or heat preservation of the car tire in the cavity. The structure is simple and easy to operate. The heat exchange hole can also reduce the weight of the half mold body without affecting the structural strength of the half mold body and reduce the transfer pressure. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of a two-half mold that facilitates the replacement of the pattern ring, provided in one embodiment of the present invention; Figure 2 This is an exploded structural diagram of a two-half mold for easy replacement of the pattern ring, provided in one embodiment of the present invention. Figure 3 This is a partial cross-sectional view of the heat exchange hole provided in one embodiment of the present invention. Figure 4 This is a partial structural diagram of a two-half mold that facilitates the replacement of the pattern ring, provided in one embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures: 01. Operating hole; 02. Parting surface; 1. Half mold body; 11. Heat exchange hole; 111. Inlet hole; 12. Receiving groove; 13. Slot; 131. Leaving bevel; 14. Movable groove; 15. Movable hole; 151. Abutting cover; 2. Replacement ring; 21. Placement ring; 22. Insert block; 3. Core; 4. Cavity; 5. Fixing screw; 6. Mounting screw; 7. Positioning plate ring; 71. Connecting screw; 72. Positioning groove; 8. Separator; 81. Abutment plate; 82. Movable column. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0027] A two-part mold that facilitates the replacement of the pattern ring, such as Figure 1 , Figure 2 and Figure 4 As shown, the mold includes two half-mold bodies 1, two replacement rings 2, and a core 3. The two half-mold bodies 1, two replacement rings 2, and core 3 are all coaxially arranged and internally form a cavity 4. The two half-mold bodies 1 are arranged vertically and symmetrically, as are the two replacement rings 2. The replacement rings 2 are located inside the half-mold bodies 1. The internal end faces of the half-mold bodies 1 and the replacement rings 2 that contact each other have a rounded transition. Both the half-mold bodies 1 and the core 3 have coaxial operating holes 01 extending through their centers along their axes. The replacement rings 2 are detachably connected to the half-mold bodies 1. The inner ring of the half-mold body 1 fits snugly against the outer ring of the replacement ring 2, and the end of the replacement ring 2 is engaged inside the half-mold body 1. The inner ring of the replacement ring 2 has raised patterns (not shown in the figure). The contact surface between the two replacement rings 2 is the parting surface 02. The upper half of the mold body 1 is the upper mold body, the lower half of the mold body 1 is the lower mold body, the replacement ring 2 is the tread ring, the two half mold bodies 1, the two replacement rings 2 and the core 3 constitute the cavity 4, the car tire is vulcanized in the cavity 4, and the replacement ring 2 is replaced according to different tread patterns of the tire, which improves the adaptability of the two half molds and can flexibly meet the needs of the tire market for different tread patterns.

[0028] like Figure 1 , Figure 2 and Figure 4 As shown, multiple fixing screws 5 are provided on the side of the replacement ring 2 and the half-mold 1, penetrating the side wall of the half-mold 1 and fixed to the side wall of the replacement ring 2. The axis of the fixing screws 5 is arranged radially along the half-mold 1, and the fixing screws 5 are also arranged in a circumferential array along the half-mold 1. The opposite end faces of the replacement ring 2 are also fixed to the corresponding end faces of the half-mold 1 by multiple mounting screws 6. The axis of the mounting screws 6 is arranged axially along the half-mold 1, and the mounting screws 6 are also arranged in a circumferential array along the half-mold 1. The fixing screws 5 fix the side wall of the half-mold 1 and the side wall of the replacement ring 2, and the mounting screws 6 fix the end face of the half-mold 1 and the end face of the replacement ring 2. The arrangement of multiple screws ensures the connection strength and achieves stable fit, preventing loosening during use.

[0029] like Figure 4 As shown, the two semi-molds 1 have receiving grooves 12 on their close-to-each end faces corresponding to the replacement rings 2. The two replacement rings 2 each have a placement ring 21 extending from their close-to-each end faces corresponding to the receiving grooves 12. The placement ring 21 extends to the outer wall of the replacement rings 2.

[0030] At the parting surface 02, corresponding to the upper and lower ends of the half-mold 1 and replacement ring 2, there are also positioning plate rings 7. The positioning plate rings 7 are fixed to the corresponding half-mold 1 and replacement ring 2 by connecting screws 71. The connecting screws 71 on the two positioning plate rings 7 are staggered. Each positioning plate ring 7 is also provided with a positioning groove 72, which is set to correspond to the corresponding connecting screw 71. The positioning screw on the upper part of the replacement ring 2 corresponds to the positioning groove 72 on the lower part of the replacement ring 2, and the positioning screw on the lower part of the replacement ring 2 corresponds to the positioning groove 72 on the upper part of the replacement ring 2. The positioning groove 72 on each positioning plate ring 7 is spaced apart from the connecting screw 71, and the upper positioning screw is staggered with the lower positioning screw, and the upper positioning groove 72 is also staggered with the lower positioning groove 72. The positioning plate rings 7 further reinforce the half-mold 1 and replacement ring 2, and the two positioning plate rings 7 are mutually positioned to achieve precise installation of the tire mold.

[0031] like Figure 4 As shown, annular inserts 22 extend from the far ends of the two replacement rings 2. The inserts 22 are coaxially arranged with the replacement rings 2, and their inner and outer diameters are both smaller than the inner and outer diameters of the corresponding replacement rings 2. The half-mold 1 has a corresponding annular slot 13 on the insert 22. The annular inserts 22 and the annular slots 13 cooperate to fix the replacement rings 2 and the half-mold 1. Fixing is achieved through the additional extension, which reduces the impact on the inside of the cavity 4 and avoids affecting the molding of the tire structure.

[0032] like Figure 2 and Figure 4 As shown, each slot 13 has a separating member 8 corresponding to the insert 22. Two separating members 8 are symmetrically arranged on each half-mold 1. The separating members 8 are installed at the opposite ends of the two half-mold 1 and close to the sidewalls of the half-mold 1. Each separating member 8 includes an abutment plate 81 and a movable column 82. The abutment plate 81 is rotatably installed in the slot 13, and its rotation axis is perpendicular to the axis of the half-mold 1. The abutment plate 81 is normally horizontal. One end of the abutment plate 81, near the center of the half-mold 1, abuts against the insert 22. The movable column 82 is hinged to the other end of the abutment plate 81 and is perpendicular to it. The axis of the movable column 82 is parallel to the axis of the half-mold 1. The slot 13 extends away from the center of the half-mold 1 and has a movable groove 14 for accommodating the separating member 8. A vertically oriented movable hole 15 is provided at the end face of the half-mold 1 corresponding to the movable column 82. The slot 13 also has a clearance angle 131 corresponding to the abutment plate 81.

[0033] Each half-mold 1 has two symmetrically arranged separating parts 8. When replacing the replacement ring 2, the movable column 82 pulls outward, causing the abutment plate 81 to rotate. To facilitate the operation of the movable column 82, a pull ring can be provided at the end of the movable column 82 away from the abutment plate 81. Taking the separating part 8 on the left side of the upper half as an example, the movable column 82 pulls upward, causing the abutment plate 81 to rotate clockwise. This pushes the insert block 22 downward at the other end of the abutment plate 81, causing the insert block 22 to loosen from the slot 13, thus making it easier to remove the replacement ring 2. This avoids the tight connection after the patterned ring is installed, which makes it difficult to apply force and remove. During this process, the rotation angle of the abutment plate 81 does not need to be too large. It only serves to assist in separating the original zero-clearance fit between the insert block 22 and the slot 13, making it easier to apply force to separate the replacement ring 2 from the half-mold 1.

[0034] A clamping cover 151 is screwed onto the movable hole. The clamping cover 151 is axially arranged along the movable hole 15 and abuts against the end of the movable column 82 after being screwed on. The clamping cover 151 covers the movable column 82 and the movable hole 15, reducing accidental contact during the use of the tire mold and avoiding affecting the normal operation of the tire mold.

[0035] like Figure 2 , Figure 3 and Figure 4 As shown, each half-mold 1 has multiple heat exchange holes 11 near the outer side of the replacement ring 2 on its inner ring. The heat exchange holes 11 penetrate the inner wall of the side near the replacement ring 2 and are arranged in a circumferential array along the side wall of the half-mold 1. The heat exchange holes 11 are interconnected, and each half-mold 1 has an inlet hole 111 on its outer surface. The inlet hole 111 is mounted opposite to the side wall of the half-mold 1 and communicates with the heat exchange holes 11. The position of the heat exchange holes 11 avoids the position of the corresponding fixing screw 5. The communication between the inlet hole 111 and the heat exchange hole 11 allows for the injection of cooling water or heat-insulating liquid to cool or insulate the car tire inside the cavity 4. The structure is simple and easy to operate. The heat exchange holes 11 avoid the position of the fixing screw 5, preventing the fixing screw 5 from being affected by the liquid inside the heat exchanger. The heat exchange holes 11 also reduce the weight of the half-mold 1 without affecting its structural strength, thus reducing the transfer pressure.

[0036] The working principle and usage of this two-half mold for easy replacement of the tread ring are as follows: During installation, the replacement ring 2 is inserted into the slot 13 of the half mold body 1 through the insert block 22, and the fixing screw 5 and the mounting screw 6 are installed in sequence. Then, the positioning plate ring 7 is installed on the half mold body 1 and the replacement ring 2 near the parting surface 02, and then the connecting screw 71 is fixed. After that, the entire tire mold is installed on the molding machine and connected to the corresponding demolding structure (existing technology) for normal use. When the replacement ring 2 needs to be replaced, the tire mold body is first removed from the molding machine, and then the fixing screw 5, the mounting screw 6, the positioning plate ring 7 and the connecting screw 71 are removed. Then, the separating part 8 is used to loosen and separate the replacement ring 2 from the half mold body 1, and finally the replacement ring 2 replacement operation is completed.

[0037] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A two-half mold for easy replacement of patterned rings, characterized in that, It includes two half mold bodies (1), two replacement rings (2) and a core (3). The two half mold bodies (1), two replacement rings (2) and the core (3) are all coaxially arranged and form a cavity (4) inside. The two half mold bodies (1) and two replacement rings (2) are arranged vertically and symmetrically. The end faces of the half mold bodies (1) and the replacement rings (2) are rounded. The half mold bodies (1) and the core (3) are both provided with coaxial operating holes (01) through the axis in the middle. The inner ring of the half mold body (1) is fitted with the outer ring of the replacement ring (2) and the replacement ring (2) is detachably connected to the half mold body (1). The inner ring of the replacement ring (2) is provided with raised patterns. The surface where the two replacement rings (2) contact each other is the parting surface (02).

2. The two-half mold for easy replacement of the patterned ring according to claim 1, characterized in that, The replacement ring (2) and the side wall of the half mold (1) are provided with a plurality of fixing screws (5) that penetrate the side wall of the half mold (1) and are fixed on the side wall of the replacement ring (2). The axis of the fixing screws (5) is arranged radially along the half mold (1) and the fixing screws (5) are also arranged in a circumferential array along the half mold (1). The end faces of the replacement ring (2) that are far apart from each other and the corresponding end faces of the half mold (1) are also fixed by a plurality of mounting screws (6). The axis of the mounting screws (6) is arranged axially along the half mold (1) and the mounting screws (6) are also arranged in a circumferential array along the half mold (1).

3. The two-half mold for easy replacement of the patterned ring according to claim 2, characterized in that, Each of the half-molds (1) has multiple heat exchange holes (11) near the outer side of the replacement ring (2) on its inner ring. The heat exchange holes (11) are arranged in a circumferential array along the side wall of the half-mold (1). The heat exchange holes (11) are interconnected, and each half-mold (1) has an inlet hole (111) on its outer surface. The inlet hole (111) is mounted opposite to the side wall of the half-mold (1) and communicates with the heat exchange holes (11). The position of the heat exchange hole (11) avoids the position of the corresponding fixing screw (5).

4. The two-half mold for easy replacement of the patterned ring according to claim 3, characterized in that, The two semi-mold bodies (1) have receiving grooves (12) on their respective end faces that are close to each other. The two replacement rings (2) have placement rings (21) extending from their respective end faces that are close to each other. The parting surface (02) also has positioning rings (7) extending from the upper and lower ends of the semi-mold bodies (1) and replacement rings (2). The positioning rings (7) are fixed to the corresponding semi-mold bodies (1) and replacement rings (2) by connecting screws (71). The connecting screws (71) on the two positioning rings (7) are staggered. The two positioning rings (7) also have positioning grooves (72). The positioning grooves (72) are all corresponding to the corresponding connecting screws (71).

5. The two-half mold for easy replacement of the patterned ring according to claim 4, characterized in that, The two replacement rings (2) are further extended with annular inserts (22) on their far-away end faces. The inserts (22) are coaxially arranged with the replacement rings (2) and their inner and outer diameters are smaller than the inner and outer diameters of the corresponding replacement rings (2). The half-mold (1) is provided with matching annular slots (13) on the inserts (22).

6. The two-half mold for easy replacement of the patterned ring according to claim 5, characterized in that, Separator (8) is provided in each slot (13) corresponding to the insert (22). Two separators (8) are symmetrically arranged on each half mold (1). The separator (8) is installed at the end faces of the two half molds (1) that are far apart from each other and is located near the side wall of the half mold (1). The separator (8) includes an abutment plate (81) and a movable column (82). The abutment plate (81) is rotatably installed in the slot (13). The rotation axis of the abutment plate (81) is perpendicular to the axis of the half mold (1). The abutment plate (81) is normally in a horizontal state. The end of the abutment plate (81) near the center of the half mold (1) abuts against the insert (22). The movable column (82) is hinged to the other end of the abutment plate (81) and is perpendicular to the abutment plate (81). The axis of the movable column (82) is parallel to the axis of the half mold (1).

7. The two-half mold for easy replacement of the patterned ring according to claim 6, characterized in that, The slot (13) extends away from the center of the half mold (1) and has a movable groove (14) for accommodating the separation piece (8). The half mold (1) has a movable hole (15) with a vertical axis at the end face corresponding to the movable column (82). The slot (13) also has a clearance angle (131) corresponding to the abutment plate (81).

8. A two-half mold for easy replacement of the patterned ring according to claim 7, characterized in that, A clamping cover (151) is screwed onto the movable hole (15). The clamping cover (151) is axially arranged along the movable hole (15) and, after being screwed on, abuts against the end of the movable column (82).

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