Finished tire tread DIN abrasion sample cutting device

Abstract

The utility model provides a finished tire tread DIN abrasion sample cutting device, which belongs to the technical field of tire production equipment and comprises an ultrasonic generator and a cutter. And the cutter is cylindrical, is vertically arranged at the upper part of the cutting position and is connected with the ultrasonic generator. The utility model solves the problems in the prior art that the sample and the cutter generate high temperature due to high-speed rotary cutting, so that the cut sample deforms and becomes sticky, and the accuracy and the stability of a DIN abrasion test result are influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tire production equipment, and particularly relates to a cutting device for DIN wear samples of finished tire treads. Background Art

[0002] The wear performance of tire tread rubber is of great significance in the evaluation of tire performance. DIN wear, that is, rotary roller wear, is one of the main methods for evaluating the wear performance of tread rubber. When conducting wear performance tests, DIN wear samples can be obtained by directly vulcanizing rubber with a mold or cutting them from the tread of a finished tire. Among them, the shape of the DIN wear sample is cylindrical, with a diameter of 16.00 mm ± 0.2 mm and a minimum height of 6 mm. When cutting from the tread of a finished tire, the current cutting method is to fix the sample on a machine tool and use a cutter with a cutting edge diameter of 16.00 mm, which is a hollow cylinder inside and slightly curved on the outside. When cutting, the cutter rotates at a high speed, with a rotational speed of at least 1000 r / min.

[0003] However, this cutting method cuts the sample by means of high-speed rotation, which will cause both the sample and the cutter to generate high temperatures, resulting in the deformation and stickiness of the cut sample, and also causing changes in the physical and chemical properties of the rubber, which will affect the accuracy and stability of the DIN wear test results. In addition, high temperatures will cause a large amount of toxic gases to be generated during the cutting of rubber, which is not conducive to the physical and mental health of the test personnel and will cause pollution to the surrounding environment. Summary of the Utility Model

[0004] The details of one or more embodiments of the present utility model are presented in the following drawings and description to make other features, purposes, and advantages of the present application more concise and understandable.

[0005] The present utility model provides a cutting device for DIN wear samples of finished tire treads, which solves the technical problems of difficult cutting of DIN wear samples of finished tire treads, deformation and stickiness of the samples, thus affecting the accuracy and stability of the DIN wear test results. It has the characteristics of high cutting accuracy, high quality of the cut samples, reduction of the generation of harmful gases, and greatly improved accuracy and stability of the DIN wear test results.

[0006] The present utility model discloses a cutting device for DIN wear samples of finished tire treads, which includes an ultrasonic generator and a cutter. The cutter is cylindrical and is vertically arranged above the cutting position and is connected to the ultrasonic generator.

[0007] In some embodiments, the cutter includes a main cutting edge and a plurality of small cutting edges. The plurality of small cutting edges are evenly distributed along the outer circumferential direction of the main cutting edge and are perpendicular to the tangential direction of the intersection point of the small cutting edges and the main cutting edge. The bottom ends of the small cutting edges are flush with the bottom end of the main cutting edge.

[0008] In some of these embodiments, the cross-section of the small blade is a triangular structure that is wider at the top and narrower at the bottom.

[0009] In some of these embodiments, it further includes a support frame and a workbench surface. The tool is connected to the support frame; the workbench surface is connected to the support frame, and the workbench surface is provided with a through hole corresponding to the cutting position, and the diameter of the through hole is greater than the outer diameter of the tool.

[0010] In some of these embodiments, it further includes a pushing assembly. The pushing assembly includes a push rod and a pushing mechanism. The push rod passes through the tool and can move up and down along the axial direction of the tool; the pushing mechanism is connected to the end of the push rod away from the cutting position and can drive the push rod to move up and down.

[0011] In some of these embodiments, the pushing mechanism includes a push plate, a first gear, a toothed arc track, a mounting plate, and a spring. The push plate is located above the push rod and is movably connected to the support frame. The bottom edge of the push plate is in an S shape; the first gear is vertically rotatably connected to the push rod; the toothed arc track is arranged along the bottom edge of the push plate and meshes with the first gear; the mounting plate is arranged at the end of the push rod away from the tool; the spring is sleeved on the push rod, with one end connected to the mounting plate and the other end connected to the inner wall of the tool.

[0012] In some of these embodiments, it further includes a tool height adjustment assembly. The tool height adjustment assembly is connected to the tool and can drive the tool to move up and down.

[0013] In some of these embodiments, the tool height adjustment assembly includes a second gear, a rack, and a rotary handle. The second gear is rotatably connected to the support frame through a rotating shaft; the rack is arranged vertically on the tool and meshes with the second gear; the rotary handle is connected to the rotating shaft of the second gear.

[0014] In some of these embodiments, it further includes a pressure sensor, and the pressure sensor is connected to the ultrasonic generator.

[0015] In some of these embodiments, one side of the workbench surface is detachably connected to the support frame by setting a fixed sleeve.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. A cutting device for DIN wear samples of finished tire treads disclosed by the present utility model realizes the cutting of DIN wear samples of finished tire treads by transmitting the high-frequency vibration of ultrasonic waves to the cutting tool. This cutting method achieves efficient and precise sample cutting, effectively preventing phenomena such as sample deformation and stickiness that affect the accuracy and stability of DIN wear test results. The combined design of the main cutting edge and multiple small cutting edges of the cutting tool further improves the cutting accuracy and efficiency. At the same time, through the cooperation of the push rod and the pushing mechanism, the smooth ejection of the sample is ensured, and the design of the cutting tool height adjustment component enables the device to adapt to tire treads of different thicknesses, improving the flexibility and practicability of the device. In addition, the addition of a pressure sensor can real-time monitor the pressure during the cutting process, timely change the frequency of ultrasonic waves, realize automatic control, and improve the stability and reliability of the cutting process.

[0018] 2. A cutting device for DIN wear samples of finished tire treads disclosed by the present utility model can make the process of taking out the sample more convenient and efficient by setting a pushing component. Since this pushing component is not provided in the existing cutting device, when the DIN wear sample of the finished tire tread is cut by the cutting tool, the DIN wear sample of the finished tire tread may adhere to the cutting tool. Therefore, it is necessary for workers to use other auxiliary tools to take down the DIN wear sample of the finished tire tread. However, for the pushing component set by the present utility model, only after pushing the pushing mechanism, under the thrust of the push rod, the DIN wear sample of the finished tire tread can be ejected. This not only ensures the smooth and stable process of ejecting the DIN wear sample without damaging the DIN wear sample of the finished tire tread, but also does not require the assistance of other auxiliary tools, greatly reducing the labor force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0020] Figure 1 is a schematic structural diagram of the cutting device for DIN wear samples of finished tire treads provided by an embodiment of the present utility model;

[0021] Figure 2 is a front view of the cutting tool provided by an embodiment of the present utility model;

[0022] Figure 3 is a top view of the cutting tool provided by an embodiment of the present utility model;

[0023] Figure 4 is a schematic structural diagram of the pushing component provided by an embodiment of the present utility model;

[0024] Figure 5 The structural schematic diagram of the workbench surface provided by the embodiment of the present utility model;

[0025] Figure 6 The structural schematic diagram when the pressing and pushing mechanism is pressed in the embodiment of the present utility model;

[0026] Figure 7 The structural schematic diagram after the pushing mechanism rebounds in the embodiment of the present utility model;

[0027] Figure 8 The structural schematic diagram of the tool height adjustment assembly provided by the embodiment of the present utility model;

[0028] In the above figures: 1 - ultrasonic generator; 2 - tool; 201 - main cutting edge; 202 - small cutting edge; 3 - pushing assembly; 301 - push rod; 302 - pushing mechanism; 3021 - push plate; 3022 - first gear; 3023 - tooth arc track; 3024 - mounting plate; 3025 - spring; 4 - support frame; 5 - workbench surface; 501 - through hole; 6 - tool height adjustment assembly; 601 - second gear; 602 - rack, 603 - rotating handle, 7 - fixed sleeve. Specific embodiments

[0029] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following describes and explains the present utility model with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided by the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0030] The embodiment of the present utility model provides a cutting device for DIN wear samples of the tread of a finished tire. Refer to Figures 1-8 As shown, the device at least includes an ultrasonic generator 1 and a tool 2. It is cylindrical and is vertically arranged above the cutting position and is connected to the ultrasonic generator. In the present utility model, the cutting of the DIN wear sample of the tread of a finished tire is realized by transmitting the high-frequency vibration of ultrasonic waves to the tool 2. This cutting method realizes efficient and precise sample cutting, effectively preventing phenomena such as sample deformation and sticking that affect the accuracy and stability of the DIN wear test results. The high-frequency vibration of ultrasonic waves enables the reduction of friction during the cutting process, making the cutting smoother and more precise. The application of ultrasonic waves reduces the friction during the cutting process, improves the cutting effect and extends the service life of the tool 2.

[0031] Further, the tool 2 includes a main cutting edge 201 and a plurality of small cutting edges 202. The plurality of small cutting edges 202 are evenly distributed along the outer circumferential direction of the main cutting edge 201 and are perpendicular to the tangential direction of the intersection point of the main cutting edge 201. The bottom ends of the small cutting edges 202 are flush with the bottom end of the main cutting edge 201. The design of the tool 2 includes a main cutting edge 201 and a plurality of small cutting edges 202. The main cutting edge 201 is responsible for the main cutting operation, while the small cutting edges 202 are evenly distributed along the outer circumferential direction of the main cutting edge 201 and are perpendicular to the tangential direction of the intersection point of the main cutting edge 201, so that the cutting force can be evenly distributed during the cutting process, reducing the cutting resistance and increasing the cutting efficiency and accuracy.

[0032] In some embodiments, the number of the small cutting edges 202 can be selected from 4 to 12. By adjusting the number of the small cutting edges 202, it is possible to flexibly adapt to tread samples of different specifications and hardnesses, improving the versatility and adaptability of the device. The configuration of the plurality of small cutting edges 202 ensures uniform force during the cutting process, thereby improving the cutting accuracy and sample consistency.

[0033] In some embodiments, the shape and material of the small cutting edges 202 can be further adjusted to adapt to different types of tread materials and cutting requirements. For example, materials with higher hardness or better toughness can be used to make the small cutting edges 202 to improve their durability and cutting effect.

[0034] Further, the cross-section of the small cutting edge 202 is a triangular structure with a wider upper part and a narrower lower part. The cross-section of the small cutting edge 202 is designed as a triangular structure with a wider upper part and a narrower lower part. The wider upper part is to make the structure of the small cutting edge more stable, and the narrower lower triangular structure means that the lower end is relatively sharp, making it easier to cut the sample and further improving the cutting efficiency.

[0035] Further, the finished tire tread DIN wear sample cutting device further includes a support frame 4 and a workbench 5. The tool 2 is connected to the support frame 4; the workbench 5 is connected to the support frame 4. The workbench 5 is provided with a through hole 501 corresponding to the cutting position, and the diameter of the through hole 501 is larger than the outer diameter of the tool 2. The support frame 4 provides fixed and stable support for the tool 2, ensuring the stability during the cutting process. The setting of the through hole 501 makes the cutting process smoother, avoiding the contact and friction between the tool 2 and the workbench 5, thereby improving the cutting efficiency and accuracy. The larger design of the through hole 501 also facilitates the cleaning of the debris generated during the cutting process and is more convenient for maintenance.

[0036] In some embodiments, the support frame 4 includes a base, a column fixed to one side of the base, and a fixing frame connected to the top of the column. By providing the base, the stability of the overall structure can be effectively ensured, and it is not prone to offset or vibration during the cutting process, ensuring the accuracy and consistency of cutting. The workbench surface 5 is detachably connected to the column through a fixing sleeve 7. Through the detachable connection between the fixing sleeve 7 and the column, the workbench surface 5 can adjust its placement height on the column. The push plate 3021 is movably connected to the fixing frame. The mounting plate 3024 is located inside the fixing frame. An activity hole is provided at the bottom end of the fixing frame corresponding to the push rod 301 and the spring 3025. The diameter of the activity hole is larger than the diameter of the spring 3025 and the inner peripheral dimension is smaller than the outer peripheral dimension of the mounting plate 3024. When the push rod 301 moves downward to push the sample out of the tool 2, the spring 3025 is compressed, and the mounting plate 3024 abuts against the top of the outer periphery of the activity hole. The second gear 601 is rotatably connected to the fixing frame through a rotating shaft. The tool 2 is movably connected to the fixing frame through the meshing of the second gear 601 and the rack 602. The rotating handle 603 is provided outside the fixing frame and connected to one end of the rotating shaft away from the second gear 601. The ultrasonic generator 1 is provided inside the fixing frame to improve the compactness of the overall structure.

[0037] In some embodiments, the shape and size of the through hole 501 can be adjusted according to the specific specifications of the tool 2 to ensure an appropriate gap. The through hole 501 can be designed in different shapes, such as circular, square, etc., to adapt to different types of cutting requirements and sample specifications.

[0038] Furthermore, the finished tire tread DIN wear sample cutting device further includes a pushing assembly 3. The pushing assembly 3 includes a push rod 301 and a pushing mechanism 302. The push rod 301 passes through the tool 2 and can move up and down along the axis direction of the tool 2. The pushing mechanism 302 is connected to the end of the push rod 301 away from the cutting position and can drive the push rod 301 to move up and down. The design of the pushing assembly 3 makes the process of taking out the sample more convenient and efficient, reduces manual intervention, and improves the automation degree of the device. Through the precise control of the pushing mechanism 302, it can be ensured that the process of pushing out the sample is stable and smooth without damaging the cut sample.

[0039] In some embodiments, the push rod 301 and the pushing mechanism 302 of the pushing assembly 3 can adopt different driving methods, such as electric or pneumatic driving, to adapt to different working environments and requirements. In addition, the length and diameter of the push rod 301 can also be adjusted according to actual needs to adapt to tools 2 of different sizes.

[0040] Further, the pushing mechanism 302 includes a push plate 3021, a first gear 3022, a toothed arc track 3023, a mounting plate 3024, and a spring 3025. The push plate 3021 is located above the push rod 301 and is movably connected to the support frame 4. The bottom edge of the push plate 3021 is S-shaped. The first gear 3022 is vertically rotatably connected to the push rod 301. The toothed arc track 3023 is arranged along the bottom edge of the push plate 3021 and meshes with the first gear 3022. The mounting plate 3024 is arranged at one end of the push rod 301 away from the tool 2. The spring 3025 is sleeved on the push rod 301. One end of the spring 3025 is connected to the mounting plate 3024, and the other end is connected to the inner wall of the tool 2. Through the synergistic effect of the push plate 3021, the first gear 3022, the toothed arc track 3023, the mounting plate 3024, and the spring 3025, the present utility model realizes the stable up-and-down movement of the push rod 301, improves the cutting accuracy and efficiency, and also enhances the durability and reliability of the device.

[0041] In some embodiments, the sizes and materials of the push plate 3021, the first gear 3022, and the spring 3025 can be adjusted according to actual needs. For example, the elastic force of the spring 303 can be selected according to the weight of the sample and the pushing force requirements to ensure appropriate rebound speed and strength.

[0042] Further, the finished tire tread DIN wear sample cutting device further includes a tool height adjustment component 6. The tool height adjustment component 6 is connected to the top of the tool 2 to adjust the height of the tool 2. The design of the tool height adjustment component 6 enables the device to flexibly adapt to tire tread samples of different specifications and thicknesses, improving the versatility and operation convenience of the device. The height adjustment function ensures precise control of the cutting depth, enhancing the consistency and quality of the samples.

[0043] In some embodiments, the specific structure and operation mode of the tool height adjustment component 6 can be adjusted according to actual needs. For example, manual adjustment, mechanical adjustment, or electric adjustment can be adopted to improve the adjustment accuracy and operation convenience.

[0044] Further, the tool height adjustment component 6 includes a second gear 601, a rack 602, and a rotating handle 603. The second gear 601 is rotatably connected to the support frame 4 through a rotating shaft. The rack 602 is arranged vertically on the tool 2 and meshes with the second gear 601. The rotating handle 603 is connected to the rotating shaft of the second gear 601. By driving the second gear 601 to rotate through the rotating handle 603, the rack 602 meshes with the second gear 601, thereby realizing the height adjustment of the tool 2. The user can quickly adjust the height of the tool 2 according to actual needs. This design improves the operation flexibility and adaptability of the device.

[0045] In some embodiments, the design of the tool height adjustment assembly 6 can adopt different transmission methods, such as chain drive or lead screw drive, to adapt to different usage environments and operation requirements.

[0046] Furthermore, the finished tire tread DIN wear sample cutting device further includes a pressure sensor, which is connected to the ultrasonic generator to monitor the pressure during the cutting process. By setting the pressure sensor, the frequency of the ultrasonic wave can be changed in a timely manner according to the pressure feedback when the tool 2 cuts the sample.

[0047] Furthermore, one side of the workbench surface 5 is detachably connected to the support frame 4 by setting a fixing sleeve 7. The fixing sleeve 7 is used to detachably connect the workbench surface 5 to the support frame 4, so that the workbench surface 5 can be conveniently installed and disassembled and the position of the workbench surface 5 on the support frame 4 can be flexibly adjusted.

[0048] In some embodiments, the design of the fixing sleeve 7 can be optimized according to actual needs, such as adopting a quick disassembly and assembly structure or a locking structure, to improve the efficiency and stability of installation and disassembly.

[0049] The working process of the above-mentioned finished tire tread DIN wear sample cutting device is as follows:

[0050] Place the finished tire tread on the workbench surface 6 for fixation, rotate the rotating handle 702 to make the tool 2 contact the finished tire tread. At this time, turn on the ultrasonic generator 1, and drive the tool 2 to cut the finished tire tread through the high-frequency vibration of the ultrasonic wave. After the cutting is completed, the obtained finished tire tread DIN wear sample is at the bottom of the tool 2. When pressing the pushing mechanism 302, the gear 304 moves downward along the tooth arc track, driving the push rod 301 to move downward until the finished tire tread DIN wear sample is pushed out, completing the cutting action of the finished tire tread DIN wear sample; after releasing the pushing mechanism 302, the spring 303 drives the push rod 301 to automatically rebound to the initial position.

[0051] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0052] The above-mentioned embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A finished tire tread DIN wear sample cutting device, characterized in that: include: Ultrasonic generator; The cutter is cylindrical and vertically arranged on the upper part of the cutting position and connected to the ultrasonic generator; the cutter comprises: Main blade; A plurality of small blades are evenly distributed along the outer circumferential direction of the main blade and are perpendicular to the tangent direction of the intersection of the main blade, and the bottom ends of the small blades are flush with the bottom ends of the main blades.

2. The finished tire tread DIN wear sample cutting device according to claim 1, characterized in that: The cross section of the small blade is a triangular structure that is wide at the top and narrow at the bottom.

3. The finished tire tread DIN wear sample cutting device according to claim 1, characterized in that: Also includes: A support frame, the tool is connected to the support frame; A work surface is connected to the support frame, and a through hole is arranged on the work surface corresponding to the cutting position, and the diameter of the through hole is larger than the outer diameter of the tool.

4. The finished tire tread DIN wear sample cutting device according to claim 3, characterized in that: Also includes: A pushing component, the pushing component comprising: A push rod, which penetrates the tool and can move up and down along the axis of the tool; The pushing mechanism is connected to the end of the push rod away from the cutting position and can drive the push rod to move up and down.

5. The finished tire tread DIN wear sample cutting device according to claim 4, characterized in that: The driving mechanism comprises: A push plate, located above the push rod and movably connected to the support frame, the bottom edge of the push plate being S-shaped; A first gear is vertically rotatably connected to the push rod; A gear arc track is arranged along the bottom edge of the push plate and meshes with the first gear; A mounting plate, arranged at an end of the push rod away from the tool; A spring is sleeved on the push rod, one end of the spring is connected to the mounting plate, and the other end is connected to the inner wall of the tool.

6. The finished tire tread DIN wear sample cutting device according to claim 4, characterized in that: Also includes: The tool height adjustment component is connected to the tool and can drive the tool to rise and fall.

7. The finished tire tread DIN wear sample cutting device according to claim 6, characterized in that: The tool height adjustment assembly comprises: A second gear is rotatably connected to the support frame via a rotating shaft; a rack, arranged on the tool in a vertical direction and meshing with the second gear; The rotating handle is connected to the rotating shaft of the second gear.

8. The finished tire tread DIN wear sample cutting device according to claim 1, characterized in that: It also includes a pressure sensor, which is connected to the ultrasonic generator.

9. The finished tire tread DIN wear sample cutting device according to claim 3, characterized in that: One side of the work surface is detachably connected to the support frame by providing a fixing sleeve.

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