Machining shearing knife

Abstract

The utility model discloses a machining shearing knife which comprises a knife holder, a cutting groove is formed in the bottom face of the knife holder, a positioning plate is fixedly connected to one side of the surface of the cutting groove, a first telescopic spring is fixedly connected to one side of the surface of the positioning plate, a contraction plate is fixedly connected to the tail end of the first telescopic spring, and a first cutting edge is fixedly connected to one side of the contraction plate. A supporting plate is fixedly installed above the first cutting edge, a first rolling column is rotationally installed at one end of the supporting plate, an adjusting plate is rotationally installed on one side of the inner wall of the cutting groove, a second cutting edge is fixedly connected to the tail end of the adjusting plate, and an adjusting mechanism is arranged on one side of the adjusting plate. The tire burr cutting tool has the advantages that due to the front-back design of the first cutting edge and the second cutting edge, burrs to be cut can be cut twice, the two cutting edges do not affect each other, and the cutting effect of the burrs on the surface of a tire can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shearing knives, and more specifically, to a shearing knife for machining Background Art

[0002] During the tire manufacturing process, the tire needs to go through a vulcanization step after mold closing and pressurization. During this period, as the temperature rises to the viscous flow transition point of the rubber, the rubber material becomes fluid and may overflow through the vent holes of the mold. After vulcanization, these overflows cool and solidify, forming so-called "flash" on the tire edge. To ensure the quality and aesthetics of the tire, these flash must be removed in subsequent processes. Therefore, a shearing knife is needed to remove them. However, when the existing shearing knife is in use, due to the unstable rotation of the tire, it is easy to cause the shearing knife to scratch the tire body.

[0003] Chinese Patent Publication No.: CN215151068U discloses a shearing knife for machining, including a tool holder and an elastic cutting plate. The tool holder is in the shape of a plate. One end of the elastic cutting plate extends outward and forms a lower cutting edge. There is a chip clearance between the elastic cutting plate and the tool holder. A roller is rotatably connected to the bottom surface of the elastic cutting plate; a roller is rotatably connected to the bottom of the lower cutting edge. This roller can be attached to the tire wall when the shearing knife trims the wool yarn, so that a certain clearance is always formed between the lower cutting edge and the tire wall for cutting, to prevent scratching the outer wall of the tire due to being too close during the cutting process.

[0004] Although the shearing knife in the above patent can protect the tire and prevent it from being scratched during use, since the upper cutting edge is arranged in the cutting clearance, the lower cutting edge will press the flash down during cutting, resulting in the upper cutting edge being unable to perform secondary cutting on the uncut flash. Therefore, the flash removal effect on the tire is poor, and the surface needs to be cut multiple times, which is time-consuming and laborious. For the problems in the related technology, no effective solution has been proposed yet. Summary of the Utility Model

[0005] Aiming at the problems in the related technology, the utility model proposes a shearing knife for machining to overcome the above-mentioned technical problems existing in the existing related technology.

[0006] Therefore, the specific technical solution adopted by the utility model is as follows:

[0007] A mechanical processing shearing knife includes a knife holder. A cutting groove is formed on the bottom surface of the knife holder. One side of the surface of the cutting groove is fixedly connected with a positioning plate. One side of the surface of the positioning plate is fixedly connected with a first telescopic spring. The end of the first telescopic spring is fixedly connected with a retractable plate. One side of the retractable plate is fixedly connected with a first cutting edge. Above the first cutting edge, a support plate is fixedly installed. One end of the support plate is rotatably installed with a first rolling column. One side of the inner wall of the cutting groove is rotatably installed with an adjusting plate. The end of the adjusting plate is fixedly connected with a second cutting edge. An adjusting mechanism is arranged on one side of the adjusting plate.

[0008] Further, in order to prevent the second cutting edge from scratching the tire when facing the protrusion on the tire, the adjusting mechanism includes support blocks fixedly connected to both sides of the adjusting plate. A second rolling column is rotatably installed on one side of the support block. A second telescopic spring is fixedly connected between the adjusting plate and the knife holder.

[0009] Further, in order to improve the burr cutting effect of the second cutting edge, one end of the second cutting edge is a serrated cutting edge.

[0010] Further, in order to reduce the friction when the bottom surface of the positioning plate contacts the tire surface, a third rolling column is rotatably installed on one side of the bottom surface of the positioning plate.

[0011] Further, in order to facilitate pressing down the burrs on the tire surface during cutting, a guiding surface is arranged on one side of the surface of the knife holder.

[0012] Further, in order to fixedly install the knife holder, one side of the knife holder is fixedly connected with a mounting plate. Connection holes are formed on the surface of the mounting plate.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. Through the front and rear design of the first cutting edge and the second cutting edge in the cutting groove, the burrs to be cut on the tire can be cut twice, and the two cutting edges do not affect each other. After the first cutting edge makes the first cut on the burrs, the uncut burrs enter the serrated gaps of the second cutting edge. Through the serrated second cutting edge, the burrs that are inconvenient to cut can be effectively cut, greatly improving the burr cutting effect on the tire surface and making the cutting and cleaning more efficient and clean.

[0015] 2. Through the first rolling column rotatably installed on one side of the first cutting edge and the second rolling column rotatably installed on one side of the second cutting edge, the tire surface can be first contacted before the two cutting edges cut. When there are protrusions on the tire surface, the first rolling column can drive the first cutting edge to squeeze the first telescopic spring to contract through the support plate, and the second rolling column can squeeze the second telescopic spring to contract upward through the support block and the adjusting plate, effectively preventing the two cutting edges from scratching the tire when encountering the protrusions on the tire surface and realizing the protection of the tire surface. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic diagram of the surface structure of a mechanical processing shearing knife according to an embodiment of the present invention;

[0018] Figure 2 is a side view of a mechanical processing shearing knife according to an embodiment of the present invention;

[0019] Figure 3 is a bottom view of a mechanical processing shearing knife according to an embodiment of the present invention;

[0020] Figure 4 is a top view of a mechanical processing shearing knife according to an embodiment of the present invention.

[0021] In the figure:

[0022] 1. Knife base; 2. Cutting groove; 3. Positioning plate; 4. First telescopic spring; 5. Shrinkage plate; 6. First cutting edge; 7. Support plate; 8. First rolling column; 9. Adjusting plate; 10. Second cutting edge; 11. Adjusting mechanism; 1101. Support block; 1102. Second rolling column; 1103. Second telescopic spring; 12. Third rolling column; 13. Guide surface; 14. Mounting plate; 15. Connecting hole. Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] According to an embodiment of the present invention, a mechanical processing shearing knife is provided.

[0025] Embodiment 1:

[0026] Such as Figures 1-4As shown in the figure, a mechanical processing shearing knife according to an embodiment of the present invention includes a tool holder 1 made of metal. A cutting groove 2 is formed on the bottom surface of the tool holder 1. One side of the surface of the cutting groove 2 is fixedly connected with a positioning plate 3. One side of the surface of the positioning plate 3 is fixedly connected with a plurality of first telescopic springs 4. The ends of the first telescopic springs 4 are fixedly connected with a contraction plate 5. One side of the contraction plate 5 is fixedly connected with a first cutting edge 6, which is used for the first cutting of the burrs on the surface of the tire; above the first cutting edge 6 on the contraction plate 5, a support plate 7 is fixedly installed. One end of the support plate 7 is rotatably installed with a first rolling column 8, which is used for rolling contact with the surface of the tire; on the inner wall of the cutting groove 2, on the side far from the first cutting edge 6, an adjusting plate 9 is rotatably installed. The end of the adjusting plate 9 is fixedly connected with a second cutting edge 10. One end of the second cutting edge 10 is a serrated cutting edge, which is convenient for the burrs to enter the serrated gaps for cutting; on one side of the adjusting plate 9, an adjusting mechanism 11 is provided to prevent the second cutting edge 10 from scratching the surface of the tire.

[0027] As Figures 1-4 shown, the adjusting mechanism 11 includes support blocks 1101 fixedly connected to both sides of the adjusting plate 9. One side of the support blocks 1101 is rotatably installed with second rolling columns 1102. A second telescopic spring 1103 is fixedly connected between the adjusting plate 9 and the tool holder 1. When there are convex parts on the surface of the tire, the second rolling columns 1102 can drive the second cutting edge to contract upward after squeezing the second telescopic spring 1103 through the support blocks 1101 and the adjusting plate 9, preventing the second cutting edge 10 from scratching the tire when encountering the convex parts on the tire; on one side of the bottom surface of the positioning plate 3, a third rolling column 12 is rotatably installed, which is used to reduce the friction when the bottom surface of the positioning plate 3 contacts the surface of the tire; on one side of the surface of the tool holder 1, a guiding surface 13 is provided, which is convenient for pressing down the burrs on the surface of the tire through the guiding surface 13 during cutting, facilitating the cutting of the cutting edge; on one side of the tool holder 1, a mounting plate 14 is fixedly connected. A connection hole 15 is formed on the surface of the mounting plate 14, which is used to conveniently fix the tool holder 1 on the device supporting the tool holder 1 during cutting through bolts.

[0028] In order to facilitate the understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0029] In summary, by means of the above technical solution of the present utility model, during actual use, the bottom surface of the positioning plate 3 is closely attached to the surface of the tire to be cut, and the rolling column three 12 on the bottom surface of the positioning plate 3 facilitates the relative movement between the tool holder 1 and the tire; after the tire rotates, due to the front and rear design of the first cutting edge 6 and the second cutting edge 10 in the cutting groove 2, the burrs to be cut on the tire can be cut twice, and the two cutting edges do not affect each other. After the first cutting edge 6 makes the first cut on the burrs, the uncut burrs enter the sawtooth gaps in the second cutting edge 10, and through the serrated second cutting edge 10, the burrs that are inconvenient to cut can be effectively removed; and when there are unevenness on the tire surface, through the rolling column one 8 rotatably installed on one side of the first cutting edge 6 and the rolling column two 1102 rotatably installed on one side of the second cutting edge 10, they can first contact the tire surface before the two cutting edges cut. When there are raised parts on the tire surface, the rolling column one 8 can drive the first cutting edge 6 to squeeze the first telescopic spring 4 to contract through the support plate 7, and the rolling column two 1102 can squeeze the second telescopic spring 1103 to contract upward through the support block 1101 and the adjusting plate 9, preventing the two cutting edges from scratching the tire when encountering the raised parts on the tire surface.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A mechanical processing shearing knife, characterized in that, It includes a tool holder (1). A cutting groove (2) is formed on the bottom surface of the tool holder (1). A positioning plate (3) is fixedly connected to one side of the surface of the cutting groove (2). A first telescopic spring (4) is fixedly connected to one side of the surface of the positioning plate (3). The end of the first telescopic spring (4) is fixedly connected to a retractable plate (5). A first cutting edge (6) is fixedly connected to one side of the retractable plate (5). A support plate (7) is fixedly installed above the first cutting edge (6). A first rolling column (8) is rotatably installed at one end of the support plate (7). A regulating plate (9) is rotatably installed on one side of the inner wall of the cutting groove (2). A second cutting edge (10) is fixedly connected to the end of the regulating plate (9). A regulating mechanism (11) is provided on one side of the regulating plate (9).

2. The mechanical processing shearing knife according to claim 1, characterized in that, The regulating mechanism (11) includes support blocks (1101) fixedly connected to both sides of the regulating plate (9). A second rolling column (1102) is rotatably installed on one side of the support block (1101). A second telescopic spring (1103) is fixedly connected between the regulating plate (9) and the tool holder (1).

3. A mechanical processing shearing knife according to claim 1, characterized in that, One end of the second cutting edge (10) is a serrated cutting edge.

4. A mechanical processing shearing knife according to claim 1, characterized in that, A third rolling column (12) is rotatably installed on one side of the bottom surface of the positioning plate (3).

5. A mechanical processing shearing knife according to claim 1, characterized in that, A guiding surface (13) is provided on one side of the surface of the tool holder (1).

6. The mechanical processing shearing knife according to claim 1, characterized in that An installation plate (14) is fixedly connected to one side of the tool holder (1). Connection holes (15) are formed on the surface of the installation plate (14).

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