Cutting mechanism for tire inner liner
By designing automatic adjustment of cutting components and deviation correction components, the problem of unstable cutting of tire airtight layer is solved, the cutting accuracy and composite quality are improved, the waste of rubber is reduced, and the production efficiency is improved.
Patent Information
- Application Number
- CN202420948446.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing tire air-tight layer cutting technology has problems such as unstable cutting, material wrinkles and lots of glue, which affects product quality.
A cutting mechanism including cutting assembly, width adjustment assembly and deviation correction assembly was designed. The cutting mechanism is cut using a disc knife. The cutting position and width are automatically adjusted through the cylinder, width adjustment motor and deviation correction motor to reduce manual intervention and improve cutting. Accuracy and quality.
Automatic adjustment of cutting position and width is achieved, cutting accuracy and compound quality is improved, deviation correction problems and waste of glue, and production efficiency is improved.
Smart Images
Figure CN222290282U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a cutting mechanism for a tire airtight layer, belonging to the technical field of tire manufacturing. Background Art
[0002] The airtight layer in the tire can prevent the penetration of moisture and gas to ensure a constant gas pressure inside the tire. In the prior art, a cutter is often used to cut the airtight layer to a fixed size. At present, the tire airtight layer is mostly cut with a guillotine or a disc knife. However, the guillotine method will cause the cutting speed to be difficult to control during the cutting process, resulting in the extrusion of the rubber when the knife is inserted, thus affecting the cutting efficiency and the quality of the joint. The disc knife cutting method will produce a lot of rubber scraps due to the material removed during the cutting process. When pre-compounding on the molding machine and the sidewall, steps are easily formed, resulting in the inability to discharge the bubbles in the middle, affecting the product quality.
[0003] Chinese utility model patent CN202763925U discloses a radial tire airtight layer cutting device for cars and trucks. It solves the problem of difficult adjustment of traditional disc knife cutting. The straight knife cutting makes the cutting surface of the airtight layer regular and flat, fully meeting the production process requirements of tire rubber parts and greatly reducing the consumption of waste and defective products. However, there are still problems such as poor cutting consistency, unstable lamination quality and material wrinkles caused by excessive correction process. Utility Model Content
[0004] In order to solve the above problems, the present application proposes a tire airtight layer cutting mechanism, the cutting mechanism comprising:
[0005] Two sets of cutting components, each set of cutting components includes a cutting knife, a cutting swing rod, a cutting knife bracket, a cylinder, and a cylinder mounting frame. The cutting knife is mounted at one end of the cutting swing rod and can roll freely along the bearing on the cutting swing rod. The cutting swing rod is hinged on the cutting knife bracket. The cylinder mounting frame is connected to the side of the cutting knife bracket, and the hinge points with the cutting swing rod are located on both sides of the cutting knife bracket. The cylinder is connected to the cylinder mounting frame.
[0006] A width adjustment component, the width adjustment component comprises a width adjustment motor, a width adjustment screw component, and a width measurement sensor, the width adjustment screw component passes through the cutting component, the width adjustment motor is connected to the width adjustment screw component, and the side width sensor is used to measure the cutting width and position;
[0007] A deflection correction component, the deflection correction component comprises a deflection correction screw component and a deflection correction motor, the deflection correction screw component is arranged on one side of the cutting component and connected to the deflection correction motor;
[0008] The mounting plate comprises a first mounting plate and a second mounting plate disposed below the first mounting plate;
[0009] A cutting roller is in contact with the cutting assembly and is used to fix the airtight layer.
[0010] Optionally, two parallel rows of slide rails are arranged on the upper surface of the second mounting plate, and two sliders are arranged on each row of slide rails. The sliders are fixedly connected to the first mounting plate to drive the first mounting plate to move on the slide rails.
[0011] Optionally, a guide rail is provided on the upper surface of the first mounting plate, two guide sliders are provided on the guide rail, the two guide sliders are fixedly connected to the two cutting knife brackets respectively, and the cylinder drives the cutting knife bracket to perform reciprocating translational motion along the guide rail.
[0012] Optionally, a pin hole is provided on the cutter bracket.
[0013] Optionally, the width adjusting screw component includes a width adjusting screw, a first fixing member and a second fixing member arranged at both ends of the second mounting plate, and a synchronous belt; the first fixing member and the second fixing member are respectively provided with pin holes, the width adjusting screw passes through the pin holes on the first fixing member, the second fixing member and the cutting knife bracket, and the synchronous belt is transmission-connected to one end of the width adjusting screw and is drive-connected to the width adjusting motor.
[0014] Optionally, the correcting screw assembly includes a correcting screw, a third fixing member and a fourth fixing member arranged on the second mounting plate, the third fixing member, the fourth fixing member and the locking member are provided with pin holes, the correcting screw passes through the pin holes on the third fixing member, the fourth fixing member and the locking member, and is directly connected to the correcting motor.
[0015] Optionally, the deviation correction motor is arranged at one end of the second mounting plate to adjust the cutting assembly.
[0016] Optionally, the cutting knife is a disc knife.
[0017] Optionally, the width measuring sensor is a laser reflection sensor, the width adjusting motor is a servo motor, and the deviation correcting motor is a DC motor.
[0018] Optionally, the deflection correction component further includes an encoder, which controls the deflection correction component to make adjustments by receiving data fed back by the width measuring sensor.
[0019] The beneficial effects of this application include but are not limited to:
[0020] 1. The tire airtight layer cutting mechanism provided in the present application can automatically adjust the cutting position and width, greatly improving the cutting accuracy;
[0021] 2. The tire airtight layer cutting mechanism provided in the present application can improve the cutting quality, further improve the composite quality, reduce the pleating problem existing in the existing deviation correction method, and thus reduce the waste of rubber;
[0022] 3. The tire airtight layer cutting mechanism provided in the present application can automatically adjust the cutting knife during the deviation correction process, or can be adjusted and kept fixed before cutting, thereby reducing manual intervention and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0024] Figure 1 This is a schematic diagram of the overall structure of a cutting mechanism for a tire airtight layer according to an embodiment of the present application;
[0025] Figure 2 This is a schematic diagram of the overall structure of the cutting assembly involved in the embodiment of the present application;
[0026] Figure 3 This is a rear view of the cutting mechanism involved in an embodiment of the present application.
[0027] List of parts and reference numerals:
[0028] 10-cutting assembly, 11-disc knife, 12-cutting swing rod, 13-cutting knife bracket, 14-cylinder mounting bracket, 15-cylinder, 16-pin hole;
[0029] 20-width adjustment assembly, 21-width adjustment motor, 22-width adjustment screw member, 221-width adjustment screw, 222-first fixing member, 223-second fixing member, 224-synchronous belt, 23-width measurement sensor;
[0030] 30-correction assembly, 31-correction screw member, 311-third fixing member, 312-fourth fixing member, 313-correction screw, 314-locking member, 315-encoder, 32-correction motor;
[0031] 41-first mounting plate, 411-guide rail, 412-guide slider, 42-second mounting plate, 421-slide rail, 422-slide slider;
[0032] 50- cutting roller;
[0033] 60-Airtight layer. DETAILED DESCRIPTION
[0034] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.
[0035] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.
[0037] In addition, in the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0040] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.
[0041] refer to Figure 1-3 , an embodiment of the present application discloses a tire airtight layer cutting mechanism, the cutting mechanism comprising:
[0042] Two groups of cutting components 10, each group of cutting components 10 includes a cutter, a cutting swing arm 12, a cutter bracket 13, a cylinder 15, and a cylinder mounting frame 14. The cutter is installed at one end of the cutting swing arm 12 and can roll freely along the bearing on the cutting swing arm 12. The cutting swing arm 12 is hinged on the cutter bracket 13. The cylinder mounting frame 14 is connected to the side of the cutter bracket 13, and the hinge points with the cutting swing arm 12 are located on both sides of the cutter bracket 13. The cylinder 15 is connected to the cylinder mounting frame 14.
[0043] refer to Figure 3 The cutting swing rod 12 is an integrated structure and can be divided into three parts. The first part is connected to the cutting knife and is tilted downward by 45 degrees in the horizontal direction. Its bottom end is connected to the cutting knife through a bearing. The second part is hinged to the cutting knife bracket 13 and remains parallel to the horizontal direction. The third part is connected to the cylinder 15 and is tilted upward by 30 degrees in the horizontal direction. The cutting knife bracket 13 is arranged at the lower end of the third part of the cutting swing rod 12 and is hinged to the second part of the cutting swing rod 12. The cutting knife bracket 13 can be divided into three parts. The first part is a base connected to the guide slider 412. The second part is a vertical plate vertically connected to the base, and a pin hole 16 is arranged at the center of the vertical plate. The size of the pin hole 16 is set according to the diameter of the width adjustment screw 221. The third part is arranged at the upper end of the second part and is fixedly connected to the second part. The cutting knife adopts a disc knife 11, and the angle can be adjusted as needed. The cylinder mounting frame 14 is connected to the third part of the cutting knife bracket 13. The cylinder 15 is hinged to the third part of the cutter swing rod. The extension and retraction of the cylinder 15 drives the cutter swing rod to move, thereby driving the cutter to rise and fall.
[0044] The width adjustment component 20 includes a width adjustment motor 21, a width adjustment screw member 22, and a width measurement sensor 23. The width adjustment screw member 22 passes through the cutting component 10, and the width adjustment motor 21 is connected to the width adjustment screw member 22. The side width sensor is used to measure the cutting width and position. The width adjustment screw member 22 includes a width adjustment screw 221, a first fixing member 222 and a second fixing member 223 arranged at both ends of the second mounting plate 42, and a synchronous belt 224.
[0045] refer to Figure 2 The first fixing member 222 and the second fixing member 223 are respectively provided with pin holes, and the width adjustment screw 221 passes through the pin holes on the first fixing member 222, the second fixing member 223 and the second part of the cutter bracket 13. The synchronous belt 224 is transmission-connected to one end of the width adjustment screw 221, and is drivingly connected to the width adjustment motor 21. The width adjustment motor 21 is a servo motor, which drives the synchronous belt 224 and the width adjustment screw 221 to rotate forward and reverse, thereby driving the cutting assembly 10 to reciprocate on the guide slider 412 to adjust the cutting width. The width adjustment screw 221 is a ball screw, which can reduce the error caused by the screw clearance and has higher accuracy. One or two width measuring sensors 23 can be set, and a laser reflection sensor is used to measure the cutting width and feedback data.
[0046] The deflection correction assembly 30 includes a deflection correction screw member 31 and a deflection correction motor 32. The deflection correction screw member 31 is arranged on one side of the cutting assembly 10 and is connected to the deflection correction motor 32. The deflection correction screw member 31 includes a deflection correction screw 313, a third fixing member 311, a fourth fixing member 312 and a locking member 314 arranged on the second mounting plate 42.
[0047] refer to Figure 2 , the third fixing member 311, the fourth fixing member 312 and the locking member 314 are provided with pin holes, and the correcting screw 313 passes through the pin holes on the third fixing member 311 and the fourth fixing member 312, and is directly connected to the correcting motor 32. The correcting screw 313 is a ball screw, which can reduce the error caused by the screw clearance and has higher precision. The correcting motor 32 is arranged at one end of the second mounting plate 42 and is directly connected to the correcting screw 313. The correcting motor 32 is a DC motor. After the cutting component is adjusted to the position and width, the locking member 314 locks the correcting screw 313 to prevent the correcting screw 313 from rotating during the cutting process and destroying the cutting effect.
[0048] In a specific embodiment, the correction component also includes an encoder 315, which drives the correction screw 313 to rotate forward and reverse according to the data fed back by the width measuring sensor 23, so as to make real-time adjustments to the cutting component 10, and the correction range is ±20-40 mm. At this time, the lock 314 is in an open state to avoid affecting the rotation of the correction screw 313.
[0049] The mounting plate includes a first mounting plate 41 and a second mounting plate 42 disposed below the first mounting plate 41. Two parallel rows of slide rails 421 are disposed on the upper surface of the second mounting plate 42, and two sliders 422 are disposed on each row of slide rails 421. The sliders 422 are fixedly connected to the first mounting plate 41 to drive the first mounting plate 41 to move on the slide rails 421. A guide rail 411 is disposed on the upper surface of the first mounting plate 41, and two guide sliders 412 are disposed on the guide rail 411. The two guide sliders 412 are respectively fixedly connected to the two cutting blade brackets 13, and the cutting assembly 10 can perform reciprocating translational motion along the guide rails 411.
[0050] The cutting roller 50 is in contact with the cutting assembly 10 and is used to fix the airtight layer 60. The cutting roller 50 can perform a rotary motion to transport the airtight layer 60 on the surface of the cutting roller 50 and cooperate with the abutting cutter to cut the airtight layer 60. The material is prevented from moving or loosening during the cutting process, thereby ensuring cutting accuracy and safety.
[0051] The cutting mechanism also includes a feedback control system (not shown), which controls the width adjustment motor 21 and the deviation correction motor 32 to make adjustments by receiving data fed back by the width measurement sensor 23 .
[0052] In an exemplary embodiment, the cutting mechanism of the tire airtight layer 60 works as follows: the range of the width sensor 23 is set to 5 to 25 mm, and the deviation is set to -1 to 1 mm. After the airtight layer 60 is extruded by the calendering mechanism, it passes through the cutting roller 50, and the width adjustment motor 21 is accurately positioned. The synchronous belt 224 connected to the width adjustment motor 21 drives the width adjustment screw 221 to move, and further drives the cutting assembly 10 to reciprocate on the guide rail 411. After determining the specific position, the cutting assembly 10 adjusts the angle. After the angle of the disc knife 11 is adjusted, the lock 314 locks the deviation correction screw 313. Driven by the cylinder 15, the disc knife 11 descends to the airtight layer 60 for cutting.
[0053] In another exemplary embodiment, the cutting mechanism of the tire airtight layer 60 works as follows: the range of the width sensor 23 is set to 5 to 25 mm, and the deviation is set to -1 to 1 mm. After the airtight layer 60 is extruded by the calendering mechanism, it passes through the cutting roller 50, and the width adjustment motor 21 is accurately positioned. The synchronous belt 224 connected to the width adjustment motor 21 drives the width adjustment screw 221 to move, and further drives the cutting assembly 10 to reciprocate on the guide rail 411. After determining the specific position, the cutting assembly 10 adjusts the angle, and the disc knife 11 is driven by the cylinder 15 to descend to the airtight layer 60 for cutting. During the cutting process, when the data fed back by the width sensor 23 exceeds the deviation, the encoder 315 controls the deviation correction motor 32 to drive the deviation correction screw 313 to rotate, and makes real-time adjustments.
[0054] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims
1. A tire airtight layer cutting mechanism, characterized in that: The cutting mechanism comprises: Two sets of cutting components, each set of cutting components includes a cutting knife, a cutting swing rod, a cutting knife bracket, a cylinder, and a cylinder mounting frame. The cutting knife is mounted at one end of the cutting swing rod and can roll freely along the bearing on the cutting swing rod. The cutting swing rod is hinged on the cutting knife bracket. The cylinder mounting frame is connected to the side of the cutting knife bracket, and the hinge points with the cutting swing rod are located on both sides of the cutting knife bracket. The cylinder is connected to the cylinder mounting frame. A width adjustment component, the width adjustment component comprises a width adjustment motor, a width adjustment screw component, and a width measurement sensor, the width adjustment screw component passes through the cutting component, the width adjustment motor is connected to the width adjustment screw component, and the width measurement sensor is used to measure the cutting width and position; A deflection correction component, the deflection correction component includes a deflection correction screw component and a deflection correction motor, the deflection correction screw component is arranged on one side of the cutting component and connected to the deflection correction motor; the deflection correction component also includes an encoder, which controls the deflection correction component to make adjustments by receiving data fed back by the width measuring sensor; The mounting plate comprises a first mounting plate and a second mounting plate disposed below the first mounting plate; A cutting roller is in contact with the cutting assembly and is used to fix the airtight layer.
2. The tire airtight layer cutting mechanism according to claim 1, characterized in that: The upper surface of the second mounting plate is provided with two parallel rows of slide rails, each row of slide rails is provided with two sliders, and the sliders are fixedly connected to the first mounting plate to drive the first mounting plate to move on the slide rails.
3. The tire airtight layer cutting mechanism according to claim 1, characterized in that: The upper surface of the first mounting plate is provided with a guide rail, and two guide sliders are provided on the guide rail. The two guide sliders are fixedly connected to the two cutting knife brackets respectively, and the cylinder drives the cutting knife bracket to perform reciprocating translational motion along the guide rail.
4. The tire airtight layer cutting mechanism according to claim 3, characterized in that: The cutter bracket is provided with a pin hole.
5. The tire airtight layer cutting mechanism according to claim 1, characterized in that: The width-adjusting screw component includes a width-adjusting screw, a first fixing member and a second fixing member arranged at both ends of the second mounting plate, and a synchronous belt; the first fixing member and the second fixing member are respectively provided with pin holes, the width-adjusting screw passes through the pin holes on the first fixing member, the second fixing member and the cutting knife bracket, the synchronous belt is transmission-connected to one end of the width-adjusting screw, and is drive-connected to the width-adjusting motor.
6. The tire airtight layer cutting mechanism according to claim 1, characterized in that: The correcting screw component includes a correcting screw, a third fixing part, a fourth fixing part and a locking part arranged on the second mounting plate, the third fixing part, the fourth fixing part and the locking part are provided with pin holes, the correcting screw passes through the pin holes on the third fixing part, the fourth fixing part and the locking part, and is directly connected to the correcting motor.
7. The tire airtight layer cutting mechanism according to claim 6, characterized in that: The deflection correction motor is arranged at one end of the second mounting plate and is used for adjusting the cutting assembly.
8. The tire airtight layer cutting mechanism according to claim 1, characterized in that: The cutting knife is a disc knife.
9. The tire airtight layer cutting mechanism according to claim 1, characterized in that: The width measuring sensor is a laser reflection sensor, the width adjusting motor is a servo motor, and the deviation correcting motor is a DC motor.