Trimming knife and trimming device

Abstract

The utility model provides a trimming knife and a trimming device, which are used for trimming edge rubber of a tire seam allowance, and comprise a knife main body, a first positioning surface and a second positioning surface, the positioning component is connected with the cutter main body, the positioning component is provided with a second positioning surface intersected with the first positioning surface, and a preset included angle is formed between the second positioning surface and the first positioning surface; and the blade is embedded in the positioning part, and the extending direction of the blade is the same as that of the second positioning surface. The trimming knife solves the technical problem that in the related technology, the efficiency of a tire seam allowance edge outlet processing mode is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of tire production, in particular to a trimming knife and a trimming device. Background Art

[0002] "Bead protrusion" refers to a defect or abnormal phenomenon in the tire bead (bead) area, which is specifically manifested as the rubber material in the tire bead protruding or turning outward. For example, after the finished tire is vulcanized, excess rubber protrusion is produced at the bead. This situation may affect the installation, sealing performance and overall safety of the tire.

[0003] In the existing technology, customers of giant tires have strict requirements on the appearance of finished tires. During the tire production process, the tire edge treatment method is generally to manually cut the edge rubber with a handheld tool. However, this trimming method has the following problems:

[0004] 1. Trimming the edge glue requires a lot of time and manpower, especially in mass production, the efficiency is very low;

[0005] 2. It is difficult to ensure the consistency and accuracy of each cutting angle during trimming, resulting in unstable product quality. It is also easy to scratch the cutting edge. If the finished tires with scratches are put on the market, they will cause premature air leakage, affecting the customer experience and causing customer complaints.

[0006] 3. When employees use handheld knives for trimming, there are certain safety risks and accidents such as cuts are likely to occur.

[0007] Therefore, the prior art needs to be further developed. Utility Model Content

[0008] The purpose of the present invention is to overcome the above technical deficiencies and provide a trimming knife and a trimming device to solve the technical problem of poor efficiency in the tire bead edge processing method in the related art.

[0009] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a trimming knife is provided for trimming the edge rubber of the tire, comprising: a tool body, the tool body having a first positioning surface; a positioning component, the positioning component is connected to the tool body, the positioning component has a second positioning surface intersecting with the first positioning surface, and a preset angle is set between the second positioning surface and the first positioning surface; a blade, the blade is embedded in the positioning component, and the extension direction of the blade is the same as that of the second positioning surface.

[0010] Furthermore, the positioning component is fixedly connected to the first side wall of the tool body, a first mounting groove for accommodating the blade is provided on the first side wall, a second mounting groove for accommodating the blade is provided on the positioning component, and the first mounting groove is connected to the second mounting groove.

[0011] Furthermore, a mounting post is provided in the first mounting groove, and when the blade is located in the first mounting groove, the mounting post is embedded in the mounting hole on the blade.

[0012] Furthermore, the tool body includes a gripping portion, which is located on a side of the tool body away from the first positioning surface, and is used to grip the trimming knife.

[0013] Furthermore, the gripping portion includes a first gripping portion and a second gripping portion that are arranged opposite to each other, and the first gripping portion and the second gripping portion are respectively located on two sides of the tool body.

[0014] Furthermore, the trimming knife includes a fixing mechanism protruding from the surface of the tool body, and the fixing mechanism is arranged corresponding to the first gripping portion.

[0015] Furthermore, the cutting edge of the blade is located on a side of the blade away from the fixing mechanism.

[0016] Furthermore, the blade is arranged at an angle.

[0017] Furthermore, the shape of the first positioning surface matches the shape of the outer edge of the tire bead; and / or the shape of the second positioning surface matches the shape of the bead base surface of the tire.

[0018] A trimming device comprises the above-mentioned trimming knife.

[0019] Beneficial effects:

[0020] By setting a first positioning surface and a second positioning surface, a preset angle is set between the second positioning surface and the first positioning surface, and an accommodating space for accommodating the tire heel is generated between the second positioning surface and the first positioning surface, so that the tire heel is used as a positioning reference, and the extension direction of the blade is the same as the second positioning surface, so that the tool can cut the edge rubber located at the tire toe along the tire bead base surface. According to the structural characteristics of the tire, the trimming knife can be stuck on the tire heel every time the edge is repaired, so that the cutting angle is unified each time, ensuring the consistency of each trimming, avoiding additional scratches, improving the efficiency of processing the edge rubber and the product quality of the finished tire, and solving the technical problem of poor efficiency of the tire edge processing method in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the trimming knife used in the embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the first positioning surface of the trimming knife and the trimming device used in the embodiment of the present utility model;

[0023] Figure 3 It is a side view of the trimming knife used in the embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the trimming knife used in the embodiment of the present utility model;

[0025] Figure 5 yes Figure 4 Magnified view of point A in .

[0026] The above drawings include the following reference numerals:

[0027] 101, outer edge of bead; 102, bead base; 103, bead heel; 104, bead toe; 105, bead edge rubber;

[0028] 1. Tool body; 11. First positioning surface; 12. First side wall; 13. First mounting groove; 131. Mounting column; 14. Grip; 141. First grip; 142. Second grip; 15. Fixing mechanism; 2. Positioning component; 21. Second positioning surface; 22. Second mounting groove; 3. Blade; 31. Cutting edge. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0030] According to an embodiment of the present invention, a trimming knife is provided. Figures 1 to 5 , including: for trimming the edge rubber 105 of the tire, including: a tool body 1, the tool body 1 has a first positioning surface 11; a positioning component 2, the positioning component 2 is connected to the tool body 1, the positioning component 2 has a second positioning surface 21 intersecting with the first positioning surface 11, and a preset angle is set between the second positioning surface 21 and the first positioning surface 11; a blade 3, the blade 3 is embedded in the positioning component 2, and the extension direction of the blade 3 is the same as that of the second positioning surface 21.

[0031] By setting a first positioning surface 11 and a second positioning surface 21, a preset angle is set between the second positioning surface 21 and the first positioning surface 11, and an accommodating space for accommodating the tire heel 103 is generated between the second positioning surface 21 and the first positioning surface 11, so that the tire heel 103 is used as a positioning reference, and the extension direction of the blade 3 is the same as the second positioning surface 21, so that the tool can cut the edge rubber located at the tire toe 104 along the tire bead base surface 102. According to the structural characteristics of the tire, the trimming knife can be stuck on the tire heel 103 every time the edge is repaired, so that the cutting angle is unified each time, the consistency of each trimming is ensured, and additional scratches are avoided, thereby improving the efficiency of processing the edge rubber and the product quality of the finished tire, and solving the technical problem of poor efficiency of the tire edge processing method in the related art.

[0032] It is understandable that the preset angle between the second positioning surface 21 and the first positioning surface 11 can be customized according to the size of the tire heel 103 of tires of different specifications.

[0033] In the trimming knife of this embodiment, see Figure 1 The positioning component 2 is fixedly connected to the first side wall 12 of the tool body 1. A first mounting groove 13 for accommodating the blade 3 is opened on the first side wall 12. A second mounting groove 22 for accommodating the blade 3 is opened on the positioning component 2. The first mounting groove 13 is connected to the second mounting groove 22.

[0034] Preferably, the positioning component 2 is located at the first side wall 12 of the tool body 1. When in use, the first positioning surface 11 and the second positioning surface 21 are respectively fitted to the tire, so that the trimming knife is stuck on the tire heel 103, and positioning can be completed before trimming.

[0035] In the trimming knife of this embodiment, see Figure 1 The first mounting groove 13 is provided with a mounting post 131. When the blade 3 is located in the first mounting groove 13, the mounting post 131 is embedded in the mounting hole on the blade 3. By providing the mounting post 131, the blade 3 is positioned and fixed.

[0036] In the trimming knife of this embodiment, see Figure 1 The tool body 1 includes a grip portion 14, which is located on a side of the tool body 1 away from the first positioning surface 11. The grip portion 14 is used to hold the trimming knife. The grip portion 14 facilitates hand gripping when the tool is handheld and facilitates gripping of the trimming device when the tool is installed in the trimming device.

[0037] In the trimming knife of this embodiment, see Figure 1The grip portion 14 includes a first grip portion 141 and a second grip portion 142 that are disposed opposite each other. The first grip portion 141 and the second grip portion 142 are located on either side of the tool body 1. The first grip portion 141 and the second grip portion 142 facilitate hand gripping when the tool is handheld, and facilitate gripping by the trimming device when the tool is mounted on the trimming device.

[0038] In some embodiments, when the tool is hand-held, two rounded corners are respectively provided at the first gripping portion 141 and the second gripping portion 142 to conform to the gripping angle of the human hand, and the top surface of the tool body 1 is drafted. As the tool body 1 moves away from the first positioning surface 11, the cross-section of the tool body 1 gradually decreases to facilitate hand gripping.

[0039] In the trimming knife of this embodiment, see Figure 1 The trimming knife includes a fixing mechanism 15 protruding from the surface of the tool body 1 , and the fixing mechanism 15 is arranged corresponding to the first gripping portion 141 .

[0040] When the tool is hand-held, the fixing mechanism 15 can be provided to fix the thumb of the human hand so that the thumb is pinned to the fixing mechanism 15, thereby preventing the relative movement of the human hand and the trimming knife, so that the human hand can maintain a stable grip on the trimming knife, thereby improving the stability of the human hand's grip on the trimming knife and further ensuring the trimming quality.

[0041] In some embodiments, the fixing mechanism 15 is a cylindrical structure fixedly disposed on the surface of the tool body 1 .

[0042] In the trimming knife of this embodiment, see Figure 1 The cutting edge 31 of the blade 3 is located on the side of the blade 3 away from the fixing mechanism 15. Specifically, by setting a fixed holding direction, the human hand can maintain a stable grip on the trimming knife, thereby improving the grip stability of the human hand on the trimming knife.

[0043] In the trimming knife of this embodiment, see Figure 1 , the blade 3 is tilted. By tilting the blade 3, the tilted blade 3 can reduce the resistance during cutting, making the cutting smoother and increasing the cutting speed. In addition, the tilted setting can disperse the cutting force and reduce the concentrated wear of the blade.

[0044] In some embodiments, the angle between the blade 3 and the vertical direction is 15°-20°.

[0045] In the trimming knife of this embodiment, see Figure 4-5 The shape of the first positioning surface 11 matches the shape of the outer edge 101 of the tire; and / or the shape of the second positioning surface 21 matches the shape of the bead base surface 102 of the tire.

[0046] In some embodiments, the first positioning surface 11 or the second positioning surface 21 is a plane, the setting angle of the first positioning surface 11 matches the shape of the outer edge 101 of the tire, and the setting angle of the second positioning surface 21 matches the shape of the bead base surface 102 of the tire.

[0047] In some embodiments, the first positioning surface 11 or the second positioning surface 21 is a curved surface. The shape of the first positioning surface 11 matches the shape of the outer edge 101 of the tire, and the shape of the second positioning surface 21 matches the shape of the bead base surface 102 of the tire.

[0048] The method of using the trimming knife in this embodiment is as follows: Figure 5 , place the trimming knife at the tire bead, make the first positioning surface 11 abut against the outer edge 101 of the bead, make the second positioning surface 21 abut against the bead base surface 102, so that the bead heel 103 is stuck between the first positioning surface 11 and the second positioning surface 21, and control the trimming knife to move along the tire bead manually or with a trimming device to complete the trimming of the edge rubber of the entire bead.

[0049] In the trimming device of this embodiment, the trimming device includes the above-mentioned trimming knife.

[0050] The trimming knife in this embodiment is applied to the trimming device. The trimming knife can be grasped by the trimming device and controlled to rotate along the tire's edge, thereby completing the automatic trimming of the edge rubber at the edge and further improving the processing efficiency of the edge rubber at the edge.

[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0052] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0053] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0054] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0055] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A trimming knife, characterized in that: Used for trimming the tire edge rubber (105), comprising: A tool body (1), the tool body (1) having a first positioning surface (11); a positioning component (2), the positioning component (2) being connected to the tool body (1), the positioning component (2) having a second positioning surface (21) intersecting with the first positioning surface (11), a preset angle being provided between the second positioning surface (21) and the first positioning surface (11); A blade (3), wherein the blade (3) is embedded in the positioning component (2), and the extending direction of the blade (3) is the same as the second positioning surface (21).

2. The trimming knife according to claim 1, characterized in that: The positioning component (2) is fixedly connected to the first side wall (12) of the tool body (1); a first mounting groove (13) for accommodating the blade (3) is provided on the first side wall (12); a second mounting groove (22) for accommodating the blade (3) is provided on the positioning component (2); the first mounting groove (13) is communicated with the second mounting groove (22).

3. The trimming knife according to claim 2, characterized in that: A mounting post (131) is provided in the first mounting groove (13); when the blade (3) is located in the first mounting groove (13), the mounting post (131) is embedded in the mounting hole on the blade (3).

4. The trimming knife according to claim 1, characterized in that: The tool body (1) comprises a gripping portion (14), the gripping portion (14) being located on a side of the tool body (1) away from the first positioning surface (11), and the gripping portion (14) being used for gripping the trimming knife.

5. The trimming knife according to claim 4, characterized in that: The gripping portion (14) comprises a first gripping portion (141) and a second gripping portion (142) which are arranged opposite to each other, and the first gripping portion (141) and the second gripping portion (142) are respectively located on two sides of the tool body (1).

6. The trimming knife according to claim 5, characterized in that: The trimming knife comprises a fixing mechanism (15) protruding from the surface of the tool body (1), and the fixing mechanism (15) is arranged corresponding to the first gripping portion (141).

7. The trimming knife according to claim 6, characterized in that: The cutting edge (31) of the blade (3) is located on a side of the blade (3) away from the fixing mechanism (15).

8. The trimming knife according to claim 1, characterized in that: The blade (3) is arranged at an angle.

9. The trimming knife according to claim 1, characterized in that: The shape of the first positioning surface (11) matches the shape of the outer edge (101) of the tire; and / or the shape of the second positioning surface (21) matches the shape of the bead base surface (102) of the tire.

10. A trimming device, characterized in that: The trimming device comprises the trimming knife according to any one of claims 1 to 9.

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