A cloth-wrapped combined belt variable-size rapid vulcanization mold and vulcanization method

Abstract

The present invention discloses a variable-size rapid vulcanization mold and vulcanization method for a cloth-wrapped banded belt, which relates to the technical field of cloth-wrapped banded belt processing. The mold comprises two symmetrically mounted semicircular arc templates, wherein a detachable tensioning template and a variable template greater than or equal to zero are mounted between the semicircular arc templates; the outer walls of the semicircular arc template, the tensioning template, and the variable template together constitute a whole template with a waist-shaped hole; a mold cavity in the shape of an annular groove is provided on the outer wall of the whole template; the tensioning template and the variable template are both composed of two symmetrically mounted plates; a mold cavity in the shape of a straight groove is provided on the outer wall of the plate; and the spacing between the two plates of the tensioning template is adjustable. The present invention enables the cloth-wrapped banded belt to be vulcanized by a tank-type vulcanizer, completely avoiding repeated vulcanization areas, achieving high vulcanization efficiency, adapting to the vulcanization processing of banded belts of different sizes, making disassembly and assembly more convenient, and achieving better shrinkage control.

Description

Technical Field

[0001] The invention relates to the technical field of cloth-wrapped banded belt production, in particular to a variable-size rapid vulcanization die and a vulcanization method for cloth-wrapped banded belts. Background Art

[0002] A bonded belt is a V-belt combination consisting of several ordinary V-belts or narrow V-belts connected together on their top surfaces by a connecting layer. The connecting layer is made of canvas with a certain strength and rubber with sufficient elasticity. It connects the individual V-belts into a whole and offsets the vibrations caused by the inconsistencies of the individual V-belts. The V-belts are of the same length, have good integrity, are evenly stressed, run smoothly, and have a higher load-bearing capacity than ordinary V-belts. They are widely used in high-power transmission machinery and equipment.

[0003] Due to the presence of the connecting layer of the banded belt, its manufacturing method is different from that of ordinary V-belts. The existing vulcanization process for wrapped banded belts uses a flat plate vulcanizer or a drum vulcanizer. The flat plate vulcanization of wrapped banded belts is segmented vulcanization, which is inefficient and inevitably has repeated vulcanization, resulting in uneven vulcanization of the entire banded belt. After vulcanization, the machine needs to be cooled and fixed to the required length. The drum vulcanization of wrapped banded belts is also segmented vulcanization. Unlike flat plate vulcanization, the drum vulcanizer rotates and moves the belt slowly while vulcanizing, which has low vulcanization efficiency and inevitably has repeated vulcanization areas.

[0004] Tank vulcanizers use a ring mold method to vulcanize wrapping tape. The cavity between the rings serves as the wrapping tape cavity. Before vulcanization, uncured wrapping tape is installed in the mold cavity, alternating between the tape and the mold rings. After vulcanization, the entire tape is cooled and set before the cured tapes are removed from the mold rings one by one. This method offers high vulcanization efficiency and eliminates the problem of repeated vulcanization because the entire tape is vulcanized in one go. However, since a banded tape is composed of multiple tapes joined together to form a single unit with a banding layer on top, it cannot be vulcanized using conventional ring molds.

[0005] In order to avoid repeated vulcanization of a flat vulcanizer and a drum vulcanizer, improve vulcanization uniformity, improve vulcanization efficiency, and reduce the investment in vulcanization equipment and molds, this vulcanization mold is specially invented. Summary of the Invention

[0006] In response to the above problems, the present invention provides a variable-size rapid vulcanization mold for a cloth-wrapped combined belt, so that the cloth-wrapped combined belt can be vulcanized through a tank-type vulcanizer, completely avoiding repeated vulcanization areas, with high vulcanization efficiency, adaptable to the vulcanization processing of combined belts of different sizes, more convenient disassembly and assembly, and better shrinkage control.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A cloth-wrapped combined belt variable-size rapid vulcanization mold comprises two symmetrically mounted semi-circular arc templates, with a detachable tensioning template and greater than or equal to zero variable templates installed between the semi-circular arc templates; the outer walls of the semi-circular arc template, the tensioning template and the variable template together constitute an entire template with a waist-shaped hole; an annular groove-shaped mold cavity is provided on the outer wall of the entire template; the tensioning template and the variable template are both composed of two symmetrically mounted plates; a straight groove-shaped mold cavity is provided on the outer wall of the plate body; the spacing between the two plates of the tensioning template is adjustable.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The mold of the present invention can be used to vulcanize the cloth-wrapped belt using a tank vulcanizer, completely replacing the plate vulcanizer and drum vulcanizer with low vulcanization efficiency and repeated vulcanization. The tank vulcanizer can provide stable and consistent vulcanization temperature, time and pressure, ensuring that each belt is compacted and vulcanized without pores. Its vulcanization uniformity, stability and efficiency are far higher than those of the segmented plate vulcanizer and drum vulcanizer.

[0011] 2. The number of variable modules is adjustable, and the sizes can be designed in various ways according to needs, such as half an inch, one inch, 2 inches, 3 inches, 4 inches, 5 inches, 10 inches, 20 inches, and 30 inches. Fixed arc module + tensioning template size = basic size. In this way, the combination of more than ten variable modules can achieve dozens or hundreds of product size combinations, and the variable module can adapt to semi-circular arc templates of different radii to achieve 1 / 2 inch, 1 / 4 inch or even smaller changes. At the same time, it can make this mold adapt to the vulcanization processing of wrapped cloth-type joint belts with a larger size range. By selecting the appropriate module size, the shrinkage rate of the skeleton material can be ensured to be the most ideal.

[0012] 3. Compared with the traditional circular mold, the mold of the present invention adopts a waist-shaped hole mold, and the number of variable templates can be adjusted, which can make the radius of the semi-circular arc templates at both ends smaller, and can adapt to the vulcanization of smaller-sized cloth-wrapped belts.

[0013] 4. The mold of the present invention can make the internal space of the cloth-wrapped belt mold with the same circumference smaller than that of the circular mold, so that more molds can be placed in a unit space, and the internal space of the vulcanization tank can be used more efficiently, thereby achieving better energy saving and consumption reduction.

[0014] As a further improvement of the above technical solution, the distance between the two plates of the variable template is adjustable.

[0015] The effect of the above improvement is that the variable template can be adapted to semicircular arc templates of different radii, thereby improving the adaptability of the mold of the present invention to the vulcanization processing of wrapped belts with a larger size range.

[0016] As a further improvement of the above technical solution, there are multiple sets of semicircular arc templates, and the arc radius of each set is different.

[0017] The effect of the above improvement is that the same variable template can be adapted to semicircular arc templates of different radii, thereby improving the adaptability of the mold of the present invention to the vulcanization processing of wrapped belts with a larger size range.

[0018] As a further improvement of the above technical solution, the variable templates are provided with multiple sets, and the width of the plate body of each set is different.

[0019] The effects of the above improvements are: the number of variable modules can be adjusted, and the sizes can be designed in various ways according to needs, such as half an inch, one inch, 2 inches, 3 inches, 4 inches, 5 inches, 10 inches, 20 inches, and 30 inches. The fixed arc module + the tensioning template size = the basic size. In this way, the product size can be covered in dozens or hundreds of combinations through the combination of more than ten variable modules, and the variable module can be adapted to semi-arc templates of different radii to achieve a change of 1 / 2 inch, 1 / 4 inch or even smaller. At the same time, it can enable the mold to adapt to the vulcanization processing of a larger size range of cloth-wrapped joint belts. By selecting the appropriate module size, the shrinkage rate of the skeleton material can be ensured to be the most ideal.

[0020] As a further improvement of the above technical solution, protrusions are provided on both sides of the tensioning template plate; and slots matching the protrusions are provided at both end ends of the semicircular arc template.

[0021] The effect of the above improvement is that the tensioning template can be stably connected with the semicircular arc template by snapping and fitting, and at the same time, after vulcanization is completed, the tensioning template can be retracted and separated from the semicircular arc template, making it easy to remove the joint belt.

[0022] As a further improvement of the above technical solution, a protrusion is provided on one side of the plate body of the variable template, and a slot is provided on the other side.

[0023] The effect of the above improvement is that the variable templates can be snap-fitted with each other, and can also be snap-fitted with the tensioning template and the semicircular arc template.

[0024] As a further improvement of the above technical solution, the plates of the tensioning template and / or the variable template are connected to each other through a telescopic mechanism; the telescopic mechanism includes a forward screw rod, a reverse screw rod, and a screw sleeve connecting the forward screw rod and the reverse screw rod to each other; the other ends of the forward screw rod and the reverse screw rod are connected to the corresponding vertical plates.

[0025] The effect of the above improvement is: by rotating the screw sleeve, the distance between the two plates of the tensioning template or the variable template can be controlled, so that the tensioning template can be separated from the mold or the variable template can be adapted to semicircular arc templates of different radii.

[0026] As a further improvement of the above technical solution, a support frame is provided on the inner wall of the semicircular arc template.

[0027] The effect of the above improvements is to improve the structural stability of the semicircular arc template.

[0028] Another object of the present invention is to provide a method for vulcanization using the above-mentioned cloth-wrapped combined belt variable-size rapid vulcanization mold, comprising the following steps:

[0029] 1) Combine the corresponding number of variable templates and semicircular arc templates according to the length of the wrapping belt;

[0030] 2) Put the unvulcanized whole tube of cloth-wrapped joint belt on the mold;

[0031] 3) Separate the variable template from one of the semicircular arc templates at a distance so that the cloth-wrapped joint belt is immersed in the corresponding mold cavity; the separation distance is just enough to insert the tensioning template;

[0032] 4) Insert the tensioning template into the spacing, and adjust the spacing between the plates on the tensioning template so that the plates of the tensioning template are closely connected with the corresponding variable template and semicircular arc template without misalignment;

[0033] 5) Put on the vulcanizing rubber sleeve and hoist the entire mold into the tank vulcanizing machine for vulcanization;

[0034] 6) Take out the vulcanized mold as a whole, remove the rubber sleeve, hang the mold as a whole into the cooling water to cool and shape it, then take it out, shorten the distance between the plates of the tensioning template, so that the tensioning template is separated from the mold as a whole, shorten the distance between the variable template and the semi-circular arc template, and take the cloth-wrapped joint belt out of the mold cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the top view of the mold.

[0036] Figure 2 This is a schematic diagram of the top view of the mold structure composed of a semicircular arc template with a smaller radius.

[0037] Figure 3 This is a schematic diagram of the main structure of this mold.

[0038] Figure 4 This is a schematic diagram of the top view of the mold without a variable template.

[0039] Figure 5This is a schematic diagram of the top view of the mold structure containing multiple variable templates.

[0040] Figure 6 This is a schematic diagram of the top view of the semicircular arc template.

[0041] Figure 7 This is a schematic diagram of the main structure of the semicircular arc template.

[0042] Figure 8 This is a schematic diagram of the top view of the tensioning formwork.

[0043] Figure 9 This is a schematic diagram of the main structure of the tensioning formwork.

[0044] Figure 10 A schematic diagram of the variable template structure from a bird's-eye view.

[0045] Figure 11 This is a schematic diagram of the main view structure of the variable template.

[0046] Figure 12 This is a structural diagram of the mold assembly.

[0047] Figure 13 This is a schematic diagram of the mold being covered with a cloth-wrapped joint belt.

[0048] Figure 14 This is a schematic diagram of the structure after the cloth-wrapped joint belt is inserted into the mold cavity.

[0049] Figure 15 This is a structural diagram of installing the tensioning template into this mold.

[0050] Figure 16 It is a side view schematic diagram of the tensioning template and variable template.

[0051] In the figure: 1. semicircular arc template; 2. tensioning template; 3. variable template; 4. forward screw; 5. screw sleeve; 6. reverse screw; 11. first groove; 12. support frame; 7. protrusion; 8. slot; 9. telescopic sleeve. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0053] Example 1:

[0054] like Figure 1-11As shown, a cloth-wrapped combined belt variable-size rapid vulcanization mold includes two semi-circular arc templates 1 installed symmetrically with each other, and a detachable tensioning template 2 and greater than or equal to zero variable templates 3 are installed between the semi-circular arc templates 1; the outer walls of the semi-circular arc template 1, the tensioning template 2 and the variable template 3 together constitute a whole template with a waist-shaped hole shape; a ring-shaped groove-shaped mold cavity is provided on the outer wall of the whole template; the tensioning template 2 and the variable template 3 are both composed of two symmetrically installed plate bodies; a straight groove-shaped mold cavity is provided on the outer wall of the plate body; the spacing between the two plate bodies of the tensioning template 2 is adjustable.

[0055] The specific working principle of the present invention is:

[0056] During the vulcanization process, the fabric-wrapped banding strap must fit snugly within the mold cavity to ensure the strap's dimensions match the design. However, if the mold is fixed in size, it will be impossible to install the unvulcanized strap into the mold cavity (the dimensional changes of the skeleton material, cords, and fabric are limited). Furthermore, it will also be impossible to remove the vulcanized strap from the mold. Therefore, the mold must be designed with a resizable structure to ensure the dimensions match the strap design during the vulcanization process. The reduced mold size allows for easier assembly and disassembly of the strap.

[0057] In order to achieve the above purpose, the above mold design is adopted, wherein the semicircular arc template 1 is a semicircular arc template of fixed size, and the outer surface is evenly distributed with strip mold cavities of corresponding linked belts parallel to each other, which is an annular groove structure. The two semicircular arc templates 1 are symmetrical to each other and are symmetrically installed;

[0058] The outer surface of the tensioning template 2 is a strip-shaped mold cavity corresponding to the joint belt, which is the same as the mold cavity of the semicircular arc template 1, with a horizontal groove structure and is installed symmetrically front and back; the width of the tensioning template 2 can be designed to be smaller.

[0059] The variable module 3 also has parallel strip-shaped mold cavities on its outer surface, which are the same as those of the semicircular arc template 1 and the tensioning template 2. It is a horizontal strip groove mechanism and is installed symmetrically front and back.

[0060] The distance between the two plates of the tensioning template 2 can be adjusted, and can generally be connected by a screw mechanism to achieve the adjustment of the distance;

[0061] The width of the variable template 3 can be designed to be wider than that of the tensioning template 2. At the same time, the variable template 3 can be designed in multiple sizes, such as half an inch, one inch, 2 inches, 3 inches, 4 inches, 5 inches, 10 inches, 20 inches, 30 inches, etc., to increase the range of sizes that this mold can adapt to the combined belt. The number can be appropriately increased or decreased according to the size of the combined belt.

[0062] like Figure 10 、 16As shown, telescopic rods 9 can be added to both ends of the variable template 3 and the tensioning template 3 to improve their structural stability. A telescopic rod 9 is provided at each end of the tensioning template 3, with the central one being a telescopic adjustment mechanism, which can be a screw mechanism. Depending on the width of the variable template 3, two or four telescopic rods 9 can be provided.

[0063] As a further optimization of the above embodiment, the variable templates 3 are provided in multiple sets, and the width of the plate body of each set is different.

[0064] As a further optimization of the above embodiment, the distance between the two plates of the variable template 3 is adjustable.

[0065] As a further optimization of the above embodiment, there are multiple sets of semicircular arc templates 1, and the arc radius of each set is different.

[0066] Specifically, the semicircular arc template 1 is in the shape of a semicircular arc plate. Multiple sets of semicircular arc templates 1 can be set, each set has a different arc radius, but can be combined with the variable template 3 or the tensioning template 2 to achieve vulcanization processing of combined belts of different lengths.

[0067] Example 2:

[0068] As a further optimization of the above embodiment, protrusions 7 are provided on both sides of the tensioning template 2; and slots 8 matching with the protrusions 7 are provided at both ends of the arc template 1.

[0069] Specifically, such as Figure 1 , 6-9, the side wall of the protrusion 7 on both sides of the tensioning template 2 is flush with the inner wall of the plate; the slot 8 is opened at the junction of the end face and the inner wall of the arc template 1.

[0070] As a further optimization of the above embodiment, a protrusion 7 is provided on one side of the plate body of the variable template 3, and a slot 8 is provided on the other side.

[0071] Specifically, such as Figure 10-11 As shown, the side wall of the protrusion 7 is flush with the inner wall of the variable template 3; the card slot 8 is opened at the junction of the side wall and the inner wall of the variable template 3.

[0072] Example 3:

[0073] As a further optimization of the above embodiment, the plates of the tensioning template 2 and / or the variable template 3 are interconnected through a telescopic mechanism; the telescopic mechanism includes a forward screw rod 4, a reverse screw rod 6, and a screw sleeve 5 connecting the forward screw rod 4 and the reverse screw rod 6 to each other; the other ends of the forward screw rod 4 and the reverse screw rod 6 are connected to the corresponding vertical plates.

[0074] Specifically, such as Figure 10As shown, the thread rotation directions of the forward screw rod 4 and the reverse screw rod 6 are opposite; one end of the forward screw rod 4 is connected to the plate body, and the reverse screw rod 6 is connected to the other opposite plate body; the forward screw rod 4 and the reverse screw rod 6 are coaxially installed and connected by a screw sleeve 5. When the screw sleeve 5 is rotated forward, the two screw rods are extended, and when the screw sleeve 5 is rotated backward, the two screw rods are shortened, thereby realizing the adjustment of the distance between the plates of the tensioning template 2 or the variable template 3.

[0075] As a further optimization of the above embodiment, a support frame 12 is provided on the inner wall of the semicircular arc template 1 .

[0076] like Figure 1 As shown, the support frame 12 is composed of rods, which are combined to form multiple tripods located on the inner wall of the semicircular arc template 1 to improve the strength of the semicircular arc template 1.

[0077] like Figure 12-15 As shown, the method for vulcanizing using the above-mentioned cloth-wrapped combined belt variable-size rapid vulcanizing mold includes the following steps:

[0078] 1) Combine the variable templates 3 of corresponding quantity or size with the semicircular arc template 1 according to the length of the cloth-wrapped joint belt;

[0079] 2) Put the unvulcanized whole tube of cloth-wrapped joint belt on the mold;

[0080] 3) Separate the variable template 3 from one of the semicircular arc templates 1 at a distance so that the cloth-wrapped joint belt is sunk into the corresponding mold cavity; the separation distance is just enough to insert the tensioning template 2;

[0081] 4) Insert the tensioning template 2 into the spacing, and adjust the spacing between the plates on the tensioning template 2 so that the plates of the tensioning template 2 are tightly connected with the corresponding variable template 3 and the semicircular arc template 1 without misalignment;

[0082] 5) Put on the vulcanizing rubber sleeve and hoist the entire mold into the tank vulcanizing machine for vulcanization;

[0083] 6) Take out the vulcanized mold as a whole, remove the rubber sleeve, hang the mold as a whole into the cooling water to cool and shape it, then take it out, shorten the distance between the plates of the tensioning template 2, so that the tensioning template 2 is separated from the mold as a whole, shorten the distance between the variable template 3 and the semicircular arc template 1, and use soft tools to remove the cloth-wrapped joint belt from the mold cavity.

[0084] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0085] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A method for vulcanizing using a cloth-wrapped combination with a variable-size rapid vulcanizing mold, characterized in that: The wrap-type combined belt variable size rapid vulcanization mold comprises two mutually symmetrically mounted semi-circular arc templates (1), a detachable tensioning template (2) and a variable template (3) greater than or equal to zero are mounted between the semi-circular arc templates (1); the outer walls of the semi-circular arc template (1), the tensioning template (2) and the variable template (3) together constitute a whole template in the shape of a waist-shaped hole; a mold cavity in the shape of an annular groove is provided on the outer wall of the whole template; the tensioning template (2) and the variable template (3) are both composed of two mutually symmetrically mounted plate bodies; a mold cavity in the shape of a straight groove is provided on the outer wall of the plate body; the spacing between the two plate bodies of the tensioning template (2) is adjustable; The vulcanization method comprises the following steps: 1) According to the length of the wrapping belt, a corresponding number of variable templates (3) are combined with the semicircular arc template (1); 2) Put the unvulcanized whole tube of cloth-wrapped joint belt on the mold; 3) Separate the variable template (3) and one of the semicircular arc templates (1) at a distance such that the cloth-wrapped joint belt is sunk into the corresponding mold cavity; the separation distance is just enough to insert the tensioning template (2); 4) inserting the tensioning template (2) into the spacing, and adjusting the spacing between the plates on the tensioning template (2) so that the plates of the tensioning template (2) are closely connected with the corresponding variable template (3) and the semicircular arc template (1) without misalignment; 5) Put on the vulcanizing rubber sleeve and hoist the entire mold into the tank vulcanizing machine for vulcanization; 6) Take out the vulcanized mold as a whole, remove the rubber sleeve, hang the mold as a whole into the cooling water to cool and shape it, then take it out, shorten the distance between the plates of the tensioning template (2), so that the tensioning template (2) is separated from the mold as a whole, shorten the distance between the variable template (3) and the semicircular arc template (1), and use a soft tool to take the cloth-wrapped joint belt out of the mold cavity.

2. The method according to claim 1, characterized in that The distance between the two plates of the variable template (3) is adjustable.

3. The method according to claim 2, characterized in that There are multiple sets of semicircular arc templates (1), and the arc radius of each set is different.

4. The method according to claim 1, wherein The variable templates (3) are provided in multiple sets, and the width of the plate body of each set is different.

5. The method according to claim 1, wherein The tensioning template (2) is provided with protrusions (7) on both sides of the plate body; and the two ends of the semicircular arc template (1) are provided with slots (8) that match the protrusions (7).

6. The method according to claim 5, characterized in that A protrusion (7) is provided on one side of the plate body of the variable template (3), and a slot (8) is provided on the other side.

7. The method according to claim 1, characterized in that The plates of the tensioning template (2) and / or the variable template (3) are connected to each other via a telescopic mechanism; the telescopic mechanism comprises a forward screw rod (4), a reverse screw rod (6), and a screw sleeve (5) connecting the forward screw rod (4) and the reverse screw rod (6) to each other; the other ends of the forward screw rod (4) and the reverse screw rod (6) are connected to corresponding vertical plates.

8. The method according to claim 1, characterized in that A support frame (12) is provided on the inner wall of the semicircular arc template (1).

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