Helical toothed belt with different material hardness and without increasing tensile strength or thickness polishing and manufacturing method thereof
By creating spiral toothed tapes that are wound around the periphery of the wire, the problems of uneven hardness and insufficient tensile strength are solved, and an efficient manufacturing process and cost-reducing effect is achieved.
Patent Information
- Application Number
- CN202411528331.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-27
- Filing Date
- 2024-10-30
- Publication Date
- 2025-05-27
AI Technical Summary
During the manufacturing process of existing spiral toothed belts, it is difficult to achieve uniformity of material hardness, resulting in insufficient tensile strength, and a complex polishing process and high cost.
By wrapping the calendered tape around the outer periphery of the wire, the texture direction of the tape is the same as the longitudinal direction of the wire, and the center part is soft and the two sides are hard. The spiral toothed belt is made by a vulcanization process.
The difference in material hardness is achieved, and durability and tensile strength are improved without increasing tensile strength or thickness, and the cost of polishing operations is reduced and product costs are reduced.
Smart Images
Figure CN120038967A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a helical toothed belt and a method for manufacturing the same, and more particularly, to a helical toothed belt having different material hardnesses without increasing the tensile strength or thickness polishing and a method for manufacturing the same. When manufacturing the helical toothed belt, a tape is wound around the outer periphery of an electric wire, and the material hardness of the central portion of the tape is formed differently from that of both side portions. Background Art
[0002] First, the prior art will be described. A drive belt for power transmission generally has a tension member layer in which a core wire is buried along the longitudinal direction of the belt and a compression rubber layer having a rib portion extending along the longitudinal direction of the belt or a cog portion formed at a predetermined interval in the longitudinal direction of the belt.
[0003] Preferably, the core wires of the drive belt are arranged at equal intervals in the same plane.
[0004] The drive belt is wound around a pulley, and travels in a state of being pulled almost linearly between the pulleys.
[0005] When the core wires are arranged in the same plane, equal tension is provided to the core wires from each position.
[0006] However, if the arrangement of the core wires in the thickness direction of the belt is disordered, the following problems occur. For example, if there is a portion where the core wires are arranged alternately in the outward peripheral direction, when wound around a pulley in contact with the inner peripheral side of the belt, this portion is wound with a larger radius of curvature, and thus, a stronger tensile state is formed.
[0007] And when wound around a pulley in contact with the outer peripheral side of the belt, this portion is wound with a smaller radius of curvature, and thus, a slack state is formed.
[0008] Also, when the core wires are buried, if the belt body is formed in a conical shape, the core wires are wound with a larger radius of curvature on one side than on the other side.
[0009] When the belt in the above state is installed in a pulley layout, a strong tension is provided to the core wires from the side with the smaller radius of curvature, and a relatively large slack state is formed in the core wires from the side with the larger radius of curvature.
[0010] As described above, if the arrangement of the core wires in the thickness direction is disordered and not in the same plane, unequal tension is applied to the core wires, causing the belt to cross. Therefore, the belt skews or comes off the pulley.
[0011] And in the portion where a strong tension is applied, the core wires may be cut off at an early stage. If the core wires are cut off, there is a problem that the belt is damaged based on this portion.
[0012] Moreover, when the arrangement of the core wires in the width direction of the belt is disordered and the intervals in the width direction are uneven, the tension applied to the core wires is transmitted to the pulley through the rubber member, forming a force that pulls the pulley. Thus, in the part where the intervals of the core wires are dense, a force is applied to the rubber member, resulting in the peeling between the core wire and the rubber or the early occurrence of cracks in the rubber.
[0013] To prevent the early breakage of the belt as described above, preferably, the core wires are wound around the cylindrical mold at almost equal intervals.
[0014] In the case of a flat belt, it is relatively easy to achieve the ideal configuration as described above. However, in the case of a V-belt or a V-ribbed belt, different from the flat belt, it is not easy to make the core wires form an ideal state.
[0015] Moreover, when winding a rubber sheet around a cylindrical electric wire, generally, the texture (grain) direction of the rubber is wound around the electric wire in the same direction as the longitudinal direction of the electric wire, and the joint part of the wound rubber protrudes, and the outer peripheral thickness of the wound rubber is uneven. Therefore, a polishing operation must be performed.
[0016] The polishing operation is an operation that incurs high costs, and thus becomes a factor in increasing the product cost.
[0017] Moreover, there is a method of squeezing the rubber wound around the electric wire to eliminate the bonding part. However, since the texture (grain) direction forms a right angle with the stretching direction during actual use, it has the disadvantage of low tensile strength due to the physical properties of the rubber itself.
[0018] Previously, a "long pressure belt made of fibers impregnated with a thermoplastic resin" with the authorization number 10-1075455, a "manufacturing method of a transmission belt and a transmission belt" with the publication number 10-2016-0120281, and a "manufacturing method of a transmission belt" with the authorization number 10-2199202 were provided. However, the above problems have not been improved. Summary of the Invention
[0019] Technical Problem to be Solved by the Invention
[0020] The present invention is provided to solve the problems of the above prior art. In order to manufacture a spiral toothed belt having high-strength physical properties and to improve the tensile strength of the belt, when winding a rubber sheet around a cylindrical electric wire, a tape calendered by a calendering device is wound, and when winding, the texture (grain) direction of the tape is made to form the longitudinal direction and the axial direction of the electric wire, so as to manufacture a spiral toothed belt having different material hardnesses at different positions without increasing the tensile strength or thickness polishing and a manufacturing method thereof.
[0021] Technical solution to solve the problem
[0022] The present invention relates to a manufacturing method of a helical toothed belt with different materials and without increasing the tensile strength or thickness polishing. As an isolation cover whose end part is welded by winding on the surface of a model, a wire is wound around the outer periphery of the isolation cover, and a helical toothed belt made of rubber is wound around the outer periphery of the wire. The technical feature is that the rubber is a calendered tape wound in a spiral shape at a predetermined angle, and indirect heating and pressing are carried out. Moreover, the central part of the tape is soft, and it becomes harder towards both side parts.
[0023] Furthermore, the present invention relates to a helical toothed belt without increasing the tensile strength or thickness polishing. As a helical toothed belt manufactured by vulcanizing a rubber sheet made by mixing rubber after winding the rubber sheet around the outer periphery of a wire, it is manufactured by the above manufacturing method.
[0024] Advantages of the invention
[0025] According to the helical toothed belt with different material hardness and without increasing the tensile strength or thickness polishing and its manufacturing method of the present invention, the following effects are achieved: When winding the tape around the wire, the texture (grain) direction of the calendered tape is completed by winding in the longitudinal direction and axial direction of the wire. Thus, the belt has high-strength physical properties, and the different hardness of the material improves the durability and also increases the tensile strength. Moreover, the wound tapes are closely attached to each other to make the thickness of the outer periphery uniform. Therefore, no additional polishing operation is required, so the cost of the polishing operation does not occur, and thus the cost of the product is reduced. Description of the drawings
[0026] Figure 1 It is a sequence diagram showing the conventional belt manufacturing method;
[0027] Figure 2 It is for showing Figure 1 the winding direction of the rubber by the method;
[0028] Figure 3 It is for showing Figure 2 the sequence diagram of the toothed belt manufacturing method with the rubber winding;
[0029] Figure 4 It is a drawing showing the winding direction of the toothed belt to which the present invention is applied;
[0030] Figure 5 It is for showing Figure 4 the sequence diagram of the toothed belt manufacturing method with the rubber winding;
[0031] Figure 6 It is for showing Figure 4 the drawing of the different hardness parts of the material of the tape;
[0032] Figure 7 To show the drawings of different hardness parts of the material of the shield Figure 6
[0033] Explanation of reference numerals
[0034] 10: Spiral toothed belt
[0035] 100: Shield
[0036] 200: Electric wire
[0037] 300: Adhesive tape Detailed implementation mode
[0038] Hereinafter, with reference to Figures 1 to 7 The preferred configuration and function of the present invention for achieving the above object with respect to the drawings will be described.
[0039] First, a manufacturing method of a spiral toothed belt of the present invention having different materials and not requiring an increase in tensile strength or thickness polishing is a manufacturing method in which a shield 100 with its end portion welded is wound around the surface of a mold, an electric wire 200 is wound around the outer periphery of the shield 100, and a rubber spiral toothed belt is wound around the outer periphery of the electric wire 200. The rubber is formed by winding a calendered adhesive tape 300 at a predetermined angle in a spiral shape to form indirect heating and pressurization, and the central portion of the adhesive tape 300 is soft and becomes harder toward both side portions.
[0040] Moreover, the spiral toothed belt of the present invention is a spiral toothed belt having a rubber formed on the outer periphery of an electric wire wound around a shield with its end portion welded wound around the surface of a mold, and the spiral toothed belt is manufactured by the above manufacturing method.
[0041] The present invention will be described in more detail below. First, the manufacturing method of the spiral toothed belt is to manufacture a rubber sheet obtained by stirring rubber and then vulcanize the rubber sheet wound around the outer periphery of an electric wire.
[0042] The core feature of the present invention is the technology regarding the portion where the adhesive tape 300 is wound around the electric wire 200. Then, after vulcanization, the manufacturing of the spiral toothed belt is completed.
[0043] The adhesive tape 300 is calendered to a thickness required by the user using a calendering device.
[0044] In the past, a rubber sheet was calendered into a cylindrical shape, introduced into a sleeve, and then molded (vulcanized). And after the molding was completed, a polishing operation was performed on the outer peripheral surface.
[0045] In the present invention, the following method is applicable. Therefore, there is no process of introducing into the sleeve and no process of polishing the outer peripheral surface.
[0046] The tape 300 winds around the outer periphery of the wire 200 and winds repeatedly with a tilt at a predetermined angle.
[0047] This is the core element of the present invention. When the tape 300 rolled by a calendering device is wound around the outer periphery of the wire 200, the texture (grain) direction of the tape 300 is made the same as the winding direction around the outer periphery of the wire 200, thereby forming high-strength physical properties of the tape 300 and increasing the tensile strength.
[0048] The tape 300 wound around the wire 200 is wound at an angle of 2° to 8° of the same angle based on the outer peripheral radius angle of the wire 200.
[0049] If the angles of the tape 300 wound around the outer periphery of the wire 200 are the same, the operator will wind the tape 300 multiple times. And if the angles of the tape 300 wound around the outer periphery of the wire 200 are bent at a predetermined angle, the single tape 300 will be wound repeatedly.
[0050] In the present invention, it is defined at an angle of 2° to 8°, and the outer periphery of the wire 200 is wound with a single tape 300.
[0051] It includes a laser tester for measuring the thickness of the tape 200 required by the user before the wire 100 is wound with the tape 300.
[0052] The laser tester is for winding with a uniform thickness before winding the tape 300, and the thickness is measured in real time using the laser tester.
[0053] The measurement of the laser tester is to emit laser from one side using a laser emitter and measure the required thickness of the user.
[0054] It includes a winding machine that adjusts to the thickness of the tape 300 required by the user before the wire 200 is wound with the tape 300.
[0055] The winding machine adjusts the thickness by loosening or pulling during winding in order to form the required thickness of the user.
[0056] Before the wire 200 is wound with the tape 300, the thickness of the tape 300 is measured using a laser tester, and the tension is adjusted using the linked winding machine so as to form the thickness of the tape 300 set by the user.
[0057] And, it includes a roller gauge which, when the wire 200 winds the tape 300, is adjusted so that the thickness of the tape 300 calendered by the calendering device forms the thickness required by the user.
[0058] The roller gauge includes rollers for the calendered tape 300 to pass through, and a measurement sensor is formed on one side of the rollers, and can measure the thickness of the tape 300.
[0059] Using the roller gauge, the gap between the repeatedly wound tapes 300 can be minimized.
[0060] Before the wire 200 winds the tape 300, the tape 300 is calendered by the rollers of the roller gauge, and the tension is adjusted by the linked winder so that the thickness of the tape 300 set by the user is formed.
[0061] The laser tester and the roller gauge can be variable according to the thickness required by the user, and a spacing adjustment component with an adjustable spacing according to the change in thickness is formed, and the thickness can be adjusted.
[0062] A camera component for confirming the gap between the wound tape 300 and the winding tape 300 is formed on one side of the wire 200.
[0063] The camera component is for minimizing the gap between the wound tape 300 and the winding tape 300 using an optical lens.
[0064] If a gap occurs during the above process, the winder can be used to move left and right for winding.
[0065] After photographing the gap between the tape 300 wound on the wire 200 and the tape 300 by the camera component, the winder is moved to wind while minimizing the gap.
[0066] In the above process, after the tape 300 of the present invention is wound around the wire 200 by repeated rotation, a vulcanization operation is performed.
[0067] Through the vulcanization operation, the gap can be automatically filled.
[0068] The manufacturing method of the spiral tooth-shaped belt of the present invention with different materials and without increasing the tensile strength or thickness polishing is a manufacturing method in which an isolation cover 100 with its end portion welded is wound on the surface of a mold, a wire 200 is wound around the outer periphery of the isolation cover 100, and a rubber spiral tooth-shaped belt is wound around the outer periphery of the wire 200. The rubber is formed by indirectly heating and pressing so that the calendered tape 300 is wound in a spiral shape at a predetermined angle, and the central portion of the tape 300 is soft and becomes harder toward both side portions.
[0069] The tape 300 is formed to be longitudinally longer, and based on the width of the tape 300, soft rubber is applied to the central part, and harder rubber is applied towards both side parts.
[0070] Different materials can be applied according to the parts of the rubber, which can reduce vibration and minimize noise at the same time. (Refer to Figure 6 the marked part)
[0071] The central part of the shield 100 is soft, and it is formed harder towards both ends.
[0072] The shield 100 also applies different materials for the tape 300. The central part of the shield 100 is formed of soft material, and it is formed harder towards both ends.
[0073] Moreover, one or more cut-off parts are formed on the shield 100.
[0074] The cut-off part refers to Figure 7 the marked part, and the three marked places are not limited. One or more cut-off parts can also be formed.
[0075] The cut-off part is entirely cut off based on the vertical height of the shield 100. The cut-off part may have no shield 100 or only be partially cut off at the lower part, and a part of the shield 100 may be left at the upper part.
[0076] The cut-off part can be formed into a semi-circular shape, a curved part, or an inclined surface, and can also be formed in multiple segments according to the situation.
[0077] As a shield that wraps around the surface of the model and fuses the end parts, a wire is wound around the outer periphery of the shield, and a rubber spiral tooth-shaped belt is formed on the outer periphery of the wire. The spiral tooth-shaped belt is manufactured by the above manufacturing method.
[0078] The spiral tooth-shaped belt of the present invention is a spiral tooth-shaped belt that is manufactured by winding the tape 300 around the wire 200 by the above manufacturing method and then vulcanizing.
[0079] According to the above present invention, when the wire is wound with the tape, the texture (grain) direction of the calendered tape is wound by the longitudinal direction and the axial direction of the wire. The physical properties of the completed belt are high strength. Different hardnesses of the materials improve durability and also improve the tensile strength. Moreover, the wound tapes are closely attached to each other to make the thickness of the outer periphery uniform, and no additional polishing operation is required. Thus, the cost of the polishing operation does not occur, and therefore, it has the effect of reducing the product cost.
Claims
1. A method for manufacturing a spiral toothed belt having different materials and not requiring polishing to increase tensile strength or thickness, wherein a spacer (100) having an end portion welded to the surface of a mold is wound around the spacer (100), an electric wire (200) is wound around the outer periphery of the spacer (100), and rubber is wound around the outer periphery of the electric wire (200), characterized in that: The rubber is formed into a spirally wound and calendered tape (300) at a predetermined angle, and is indirectly heated and pressurized. Furthermore, the center portion of the adhesive tape (300) is soft, and the portions toward the sides are hard.
2. The method for manufacturing a spiral toothed belt having different materials and without increasing tensile strength or thickness polishing according to claim 1, characterized in that: The isolation cover (100) is soft in the center and hard towards both ends.
3. A spiral toothed belt having different materials and not requiring polishing to increase tensile strength or thickness, as a shield wound on the surface of a mold to fuse the end portion, a wire wound around the outer periphery of the shield, and a rubber spiral toothed belt formed on the outer periphery of the wire, characterized in that: The spiral toothed belt is manufactured by the manufacturing method of claim 1.