Split type mold for manufacturing winding forming circular ring or cylinder

Abstract

The utility model discloses a split type mold for preparing a winding forming circular ring or a cylinder. The split type mold comprises a mounting rod body, a hollow circular ring, a limiting outer ring and a winding mold, the winding mold comprises two winding main blocks and two inward shrinkage blocks; the two winding main blocks and the two inward shrinkage blocks form a circular ring, and the two inward shrinkage blocks can retract inwards along the two winding main blocks. When the cylinder is detached from the cylinder body mold or the circular ring is detached from the winding mold, after the cylinder body mold or the winding mold is detached, the two internal shrinkage blocks are inwards shrunk towards the axis direction, and due to the fact that the internal shrinkage blocks are inwards shrunk and then the winding main block is also inwards shrunk, the circular ring can be detached from the cylinder body mold or the winding main block; and a gap is formed between the mold surface formed by the winding main block and the internal shrinkage block and the formed circular ring or cylinder, so that product demolding is realized, and the circular ring or cylinder is not easy to damage in the demolding mode.

Description

Technical Field

[0001] The utility model relates to a mold, in particular to a split mold for preparing winding-molded rings or cylinders. Background Art

[0002] The main technical problems of existing tooling molds for rings (including NOL rings) or cylinders are as follows: 1. The tooling mold has a complex structure and is time-consuming to assemble; 2. After the annular winding space is formed and solidified, demolding is difficult. After demolding, the ring (including NOL rings) or cylinder is severely damaged, and the test data stability is poor. For a batch of samples, the test data has a high dispersion, resulting in failure of formula screening; the reasons for the problem are: first, the convenience of demolding is not fully considered, and the designed mold is not convenient for demolding; second, the mold structure is complex, and the convenience of mold processing, assembly and disassembly, as well as the standardization of parts and the use of standard parts are not fully considered, resulting in cumbersome assembly, many components, poor preparation efficiency and high mold cost. Utility Model Content

[0003] The utility model aims to solve the technical problem of providing a split mold which is convenient for demoulding a ring or a cylinder after molding and is not easy to damage the ring (including NOL ring) or cylinder after demoulding.

[0004] In order to solve the above technical problems, the utility model provides a technical solution for a split mold for preparing a winding ring or cylinder:

[0005] It includes a mounting rod, a hollow circular ring, a limiting outer ring and a winding mold; the winding mold includes two winding main blocks and two retracted blocks that are connected between the two winding main blocks and are respectively located at both ends of the two winding main blocks; the two winding main blocks and the two retracted blocks form a circular ring, and the two retracted blocks can be retracted inward along the two winding main blocks; when the winding mold is used to wrap the circular ring, the winding mold and the hollow circular ring are alternately installed on the mounting rod and limited by the limiting outer ring; when the winding mold is used to wrap the cylinder, a cylinder mold is set, and the cylinder mold is composed of a winding mold with the same length as the cylinder, or is composed of multiple winding molds stacked together, and the length of the multiple winding molds after stacking is equal to the length of the cylinder, and the cylinder mold and the hollow circular ring are alternately installed on the mounting rod and limited by the limiting outer ring.

[0006] The mounting rod body is connected to a limiting ring that is integrated with itself; a positioning block is connected to the side of the limiting ring; among the hollow circular rings, the hollow circular ring that is in contact with the limiting ring is provided with a positioning groove corresponding to the positioning block, and the hollow circular ring is inserted into the positioning block through its own positioning groove; the hollow circular ring is also provided with four mounting holes that respectively correspond to the two winding main blocks and the two retracted blocks; the hollow circular ring is connected to the two winding main blocks and the two retracted blocks by bolts through the four mounting holes.

[0007] The winding mold and the hollow circular ring are limited between the limiting outer ring and the limiting ring ring; a locking bolt is threadedly connected to the limiting outer ring; the bottom end of the locking bolt passes through the limiting outer ring and rests on the outer side wall of the mounting rod.

[0008] The retracted block is trapezoidal, and the length of the outer end of the retracted block is smaller than the length of the inner end of the retracted block; the outer end of the retracted block is provided with a first arc surface that matches the two wrapped main blocks, and the inner end of the retracted block is provided with a second arc surface that matches the mounting rod body.

[0009] The winding main block and the shrinking block are made of Invar alloy.

[0010] The technical effect that can be achieved by the utility model is that the cylinder mold or the winding mold of the utility model can be detachably installed on the mounting rod body, and when the winding machine winds the glass fiber or carbon fiber into a ring or a cylinder, the cylinder mold or the winding mold can be conveniently removed from the mounting rod body; and when the cylinder is removed from the cylinder mold or the ring is removed from the winding mold, after the cylinder mold or the winding mold is removed, the two shrinking blocks are retracted inwardly toward the axial direction, and since the shrinking blocks are retracted, the winding main block is also retracted inwardly, and a gap appears between the mold surface formed by the winding main block and the shrinking blocks and the formed ring or cylinder, thereby realizing product demoulding, and this demoulding method is not easy to damage the ring or the cylinder; and the utility model has a simple structure, few components, and relatively low mold cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0012] Figure 1 This is an exploded view of a split mold for preparing a winding-molding ring or cylinder according to the utility model;

[0013] Figure 2 This is a connection diagram of the limit outer ring;

[0014] Figure 3 yes Figure 2 A magnified view of part A;

[0015] Figure 4This is a schematic diagram of the connection of a split mold for preparing a winding ring or cylinder in the utility model;

[0016] Figure 5 It is a schematic diagram of the structure of the winding main block;

[0017] Figure 6 It is a structural diagram of the indented block;

[0018] Figure 7 It is a schematic diagram of the structure when two blocks are wrapped around the main block and two inward-contracted blocks form a ring;

[0019] Figure 8 It is a schematic diagram of the structure after the two shrinking blocks are shrunk inwards;

[0020] Figure 9 This is a schematic diagram of the structure when the cylinder mold consists of a winding mold with the same length as the cylinder;

[0021] Figure 10 It is a schematic diagram of a hollow ring structure with a positioning groove. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] See Figures 1 to 10 .

[0024] A split mold for preparing a winding ring or cylinder, comprising a mounting rod 1, a hollow ring 2, a limiting outer ring 3, and a winding mold; the winding mold comprises two winding main blocks 4 and two retracting blocks 5 connected between the two winding main blocks 4 and respectively located at both ends of the two winding main blocks 4; the two winding main blocks 4 and the two retracting blocks 5 form a circular ring, and the two retracting blocks 5 can be retracted inward along the two winding main blocks 4 (refer to Figure 7 、 8 ); when the winding mold is used to wind a ring, the winding mold and the hollow ring 2 are alternately detachably mounted on the mounting rod 1 and limited by the limiting outer ring 3; when the winding mold is used to wind a cylinder, a cylinder mold is set, and the cylinder mold consists of a winding mold with the same length as the cylinder, or is composed of multiple winding molds stacked together, and the length of the multiple winding molds after stacking is equal to the length of the cylinder, and the cylinder mold and the hollow ring 2 are alternately detachably mounted on the mounting rod 1 and limited by the limiting outer ring 3.

[0025] Specifically in terms of installation, the mounting rod 1 is connected to a limiting ring 6 which is integrated with itself, and a positioning block 7 is connected to the side of the limiting ring 6; in the hollow ring 2, a positioning groove 8 corresponding to the positioning block 7 is provided on the hollow ring 2 which is in contact with the limiting ring 6, and the hollow ring 2 is inserted into the positioning block 7 through its own positioning groove 8; the hollow ring 2 is also provided with four mounting holes 9 which correspond to the two winding main blocks 4 and the two shrinking blocks 5 respectively, and the hollow ring 2 is connected to the two winding main blocks 4 and the two shrinking blocks 5 respectively through the four mounting holes 9 by bolts; the winding mold and the hollow ring are The center ring 2 is limited between the limiting outer ring 3 and the limiting ring ring 6, and a locking bolt 11 is threadedly connected to the limiting outer ring 3. The bottom end of the locking bolt 11 passes through the limiting outer ring 3 and rests on the outer wall of the mounting rod 1. The utility model adopts the above-mentioned installation method. When disassembling, it is only necessary to first unscrew the locking bolt 11, then remove the hollow ring 2 and the winding mold on the mounting rod 1, and then unscrew the bolts between the hollow ring 2 and the winding main block 4 and the shrinking block 5, and then retract the two shrinking blocks 5 toward the axial direction. Since the shrinking block 5 is retracted, the winding main block 4 can also be retracted inward (reference Figure 8 ), a gap appears between the mold surface formed by the inward-shrinking block 5 and the rear-wound main block 4 and the formed ring or cylinder, thereby realizing product demoulding. This demoulding method is relatively easy and not easy to damage; the locking bolt 11, the limiting ring 6 and the bolt (that is, the bolt between the hollow ring 2 and the winding main block 4 and the inward-shrinking block 5) of the utility model are all standard parts, which are very convenient during disassembly and installation; as a preference, the hollow ring 2 of the utility model adopts a hollow design, which is more lightweight.

[0026] Preferably, the winding main block 4 and the retracted block 5 are made of Invar alloy. Existing molds generally use steel molds, which are prone to thermal expansion, resulting in poor dimensional stability. The utility model is made of Invar alloy, which is not easily affected by temperature and can maintain extremely high structural accuracy.

[0027] Specifically, the retracted block 5 of the present invention is trapezoidal, and the length of the outer end of the retracted block 5 is smaller than the length of the inner end of the retracted block 5; the outer end of the retracted block 5 is provided with a first curved surface 21 that matches the two wrapped main blocks 4, and the inner end of the retracted block 5 is provided with a second curved surface 22 that matches the mounting rod body 1. By adopting a trapezoidal design for the retracted block 5, the utility model can also shrink slightly inward when the retracted block 5 shrinks.

[0028] A method for using a split mold for preparing a winding-molding ring or cylinder, using the above-mentioned split mold for preparing a winding-molding ring or cylinder,

[0029] S1 Installing the mold: First, insert the hollow ring 2 with the positioning groove 8 into the mounting rod 1, and insert the hollow ring 2 into the positioning block 7; then assemble the tooling mold. When the winding mold is used to wind the ring, the winding mold and the hollow ring 2 are alternately installed on the mounting rod 1 and limited by the limiting outer ring 3. The winding mold needs to splice its two winding main blocks 4 and two shrinking blocks 5 into a ring on the mounting rod 1. Then, all the hollow rings 2 and the winding mold are connected by bolts to obtain an assembled tooling mold;

[0030] When the winding mold is used to wind a cylinder and the cylinder mold consists of a winding mold with the same length as the cylinder, first, the cylinder mold and the hollow ring 2 are alternately installed on the mounting rod 1 and limited by the limiting outer ring 3. The cylinder mold needs to splice its two winding main blocks 4 and two shrinking blocks 5 into a ring on the mounting rod 1. Then, all the hollow rings 2 and the cylinder mold are connected by bolts to obtain an assembled tooling mold;

[0031] When the winding mold is used to wind a cylinder and the cylinder mold is formed by stacking multiple winding molds, first, the multiple winding molds are stacked on the mounting rod 1 to form a cylinder mold so that the length of the cylinder mold is consistent with the length of the cylinder to be wound. The winding mold is spliced into a ring by its own two winding main blocks 4 and two shrinkage blocks 5. Then, the cylinder mold and the hollow ring 2 are alternately installed on the mounting rod 1 and limited by the limiting outer ring 3. Then, all the hollow rings 2 and the cylinder mold are connected by bolts to obtain an assembled tooling mold;

[0032] S2: preparing a ring or a cylinder: clamping the tooling mold assembled in S1 onto a winding machine, and winding the glass fiber or carbon fiber into a ring or a cylinder by the winding machine. Specifically, the winding machine winds the glass fiber or carbon fiber into a ring or a cylinder by wet winding, semi-dry winding, or dry winding;

[0033] S3 demoulding: The ring or cylinder after winding forming needs to be demoulded after rolling and curing. When demoulding, first remove the limiting outer ring 3, remove the tooling mold from the mounting rod 1, remove the bolts, and then remove the hollow ring 2, disassemble the entire tooling mold, and finally shrink the two shrinking blocks 5 inward in the axial direction. As the shrinking blocks 5 shrink inward, the winding main block 4 also shrinks inward, and a gap appears between the mold surface formed by the shrinking block 5 and the rear winding main block 4 and the formed ring or cylinder component, thereby realizing product demoulding.

[0034] The tooling mold of the present invention adopts the above-mentioned installation and disassembly method, which is more convenient. Some of the above-mentioned connecting parts adopt standard parts (standard parts such as locking bolts 11, limiting rings 6, etc.), which are easy and quick to install and easy to replace after subsequent damage. In this design, only two parts, the winding main block 4 and the shrinking block 5, are used to combine into a ring or cylindrical outer arc mold surface, which has the characteristics of simple assembly, easy demoulding and convenient processing; the hollow ring 2 in this design adopts a hollow design, and the winding main block 4 and the shrinking block 5 can be combined to form a ring or cylinder preparation tooling, and the ring or cylinder preparation is realized in combination with the winding machine, among which non-standard parts Only the rod body 1, hollow ring 2, winding main block 4 and shrinking block 5 need to be installed. This design has the characteristics of low cost, compact structure, easy assembly and disassembly, lightweight mold, etc., which greatly improves efficiency; compared with the integral ring mold in the existing technology, the split parts prepared by this design have the characteristics of shrinkable demoulding, easier demoulding, less likely to damage the spline, and no ejection mechanism is required; the winding main block 4 and the shrinking block 5 are made of Invar alloy, which has a very low thermal expansion coefficient. Within the temperature range of -45-250℃, its size is not affected by temperature, and it can maintain extremely high structural accuracy, providing a precise circular outer arc mold surface for the preparation of rings or cylinders.

[0035] In the specific implementation of making NOL ring, according to Figure 1-8 As shown, by combining 5 hollow rings 2 with 8 indentation blocks 5 and 8 winding main blocks 4, four annular winding cavities are formed. The radius of the assembled ring of the indentation blocks 5 and the winding main blocks 4 is 75 mm, the radius of the hollow ring 2 is 78 mm, and the thickness of the three is 6 mm. The inner radius of the hollow ring 2, the winding main block 4 and the indentation blocks 5 is 25 mm. The diameter of the mounting rod 1 is 50 mm. Figure 1In the stacking assembly method shown, the diameter of the mounting hole 9 is 9 mm; four standard bolts with a diameter of 8 mm are passed through the mounting hole 9 and the winding mold (the standard bolt length is 100 mm), and are fixed with four M8 hexagonal nuts. The assembled tooling is installed on the mounting rod body 1, and the length of the mounting rod body 1 is 500 mm; the limiting ring 6 has a thickness of 6 mm and a diameter of 66 mm. It is located 50 mm from one end of the mounting rod body 1 and is integrally formed on the mounting rod body 1; then, the limiting outer ring 3 is installed on the other end of the mounting rod body 1, and it is ensured to be close to the end of the hollow ring 2. The surface is locked by the locking bolt 11 to prevent the tooling from sliding axially along the mounting rod 1. After assembly, 4 annular winding spaces will be formed; the assembled tooling mold is installed on the winding machine, and the winding machine is started to continuously wind four rings in the formed annular winding cavity, and the number of winding turns is controlled to ensure that the thickness is 3mm; after each annular space is wound to the required thickness, it jumps to the next annular winding space until the 4 rings are wound; the entire tooling mold is removed and placed in a curing oven for rolling curing; after the ring is cured, the limiting outer ring 3 is removed, the hollow ring 2 is separated, and the ring is wound according to the method described above. Figure 8 The mold is split as shown and demoulded by shrinking, so that four standard NOL ring samples with a diameter of 150 mm and a thickness of 3 mm can be easily obtained.

[0036] In the specific implementation of making the cylinder, a cylindrical winding cavity is formed by combining two hollow rings 2, two shrinking blocks 5, and two winding main blocks 4; wherein the radius of the winding main block 4 is 100 mm, the radius of the hollow ring 2 is 105 mm, the thickness of the winding main block 4 and the shrinking block 5 are both 100 mm, and the inner circle radius is 25 mm; according to Figure 9 、 Figure 1 、 Figure 2 、 Figure 4In the stacking assembly method shown, the diameter of the mounting hole 9 is 9 mm; four standard bolts with a diameter of 8 mm are passed through the mounting hole 9 and the cylinder mold (the standard bolt length is 180 mm), and are fixed with four M8 hexagonal nuts. The assembled tooling is installed on the mounting rod body 1. The mounting rod body 1 is 400 mm long, and the limiting ring 6 is 6 mm thick and 66 mm in diameter. It is located 50 mm from one end of the mounting rod body 1 and is integrally formed on the mounting rod body 1; then, the limiting outer ring 3 is installed on the other end of the mounting rod body 1, and ensure that the limiting outer ring 3 is close to the hollow circle The end face of the ring 2 is locked by the locking bolt 11 to prevent the tooling from sliding axially along the mounting rod 1. After assembly, a cylindrical winding space will be formed; the assembled complete tooling mold is installed on the winding machine, and the winding machine is started to wind a cylinder in the formed annular winding cavity; after winding to the required thickness, the entire tooling mold is removed and placed in a curing oven for rolling curing; after the cylinder is cured, the limiting outer ring 3 is removed, the hollow ring 2 is separated, and the cylinder mold is disassembled, and demoulding is achieved by shrinking, thereby conveniently obtaining a cylindrical sample with a diameter of 200 mm and a thickness of 5 mm.

Claims

1. A split mold for preparing a winding ring or cylinder, characterized by: The invention comprises a mounting rod (1), a hollow circular ring (2), a limiting outer ring (3) and a winding mold; the winding mold comprises two winding main blocks (4) and two retracting blocks (5) connected between the two winding main blocks (4) and respectively located at both ends of the two winding main blocks (4); the two winding main blocks (4) and the two retracting blocks (5) form a circular ring, and the two retracting blocks (5) can be retracted inwardly along the two winding main blocks (4); when the winding mold is used to wind the circular ring, The winding mold and the hollow circular ring (2) are alternately detachably mounted on the mounting rod (1) and are limited by a limiting outer ring (3); when the winding mold is used to wind a cylinder, a cylinder mold is provided, the cylinder mold being composed of a winding mold having the same length as the cylinder, or being composed of a plurality of winding molds stacked together, the length of the stacked winding molds being equal to the length of the cylinder, the cylinder mold and the hollow circular ring (2) are alternately detachably mounted on the mounting rod (1) and are limited by a limiting outer ring (3).

2. A split mold for preparing a winding ring or cylinder according to claim 1, characterized in that: The mounting rod (1) is connected to a limiting ring (6) which is integral with the mounting rod; a positioning block (7) is connected to the side of the limiting ring (6); in the hollow ring (2), a positioning groove (8) corresponding to the positioning block (7) is provided on the hollow ring (2) which is in contact with the limiting ring (6); the hollow ring (2) is inserted into the positioning block (7) through its own positioning groove (8); the hollow ring (2) is also provided with four mounting holes (9) which respectively correspond to the two winding main blocks (4) and the two shrinking blocks (5); the hollow ring (2) is connected to the two winding main blocks (4) and the two shrinking blocks (5) through bolts through the four mounting holes (9).

3. A split mold for preparing a winding ring or cylinder according to claim 2, characterized in that: The winding mold and the hollow circular ring (2) are limited between the limiting outer ring (3) and the limiting ring (6); a locking bolt (11) is threadedly connected to the limiting outer ring (3); the bottom end of the locking bolt (11) passes through the limiting outer ring (3) and abuts against the outer side wall of the mounting rod (1).

4. The split mold for preparing a winding ring or cylinder according to claim 1, characterized in that: The retracted block (5) is trapezoidal, and the length of the outer end of the retracted block (5) is smaller than the length of the inner end of the retracted block (5); the outer end of the retracted block (5) is provided with a first arcuate surface (21) matching the two winding main blocks (4), and the inner end of the retracted block (5) is provided with a second arcuate surface (22) matching the mounting rod (1).

5. The split mold for preparing a winding ring or cylinder according to claim 1, characterized in that: The winding main block (4) and the shrinking block (5) are made of Invar alloy.

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