CN219235352U

CN219235352U - Trimming knife for demolding of green tires

Info

Publication number: CN219235352U
Application number: CN202320523348.3U
Authority: CN
Inventors: 王骏杰; 鹿存麟; 张迎秋
Original assignee: Xuzhou Xugong Tyres Co ltd
Current assignee: Xuzhou Xulun Rubber Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-06-23
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses a trimming cutter for a tire blank after demolding, which belongs to the technical field of vulcanized finished tire processing, and comprises a cutter head and a cutter bar, wherein an S-shaped connecting part is connected between the cutter head and the cutter bar; the longitudinal section of one end of the connecting part, which is close to the cutter head, is concave downwards, and the longitudinal section of one side of the connecting part, which is close to the cutter bar, is convex upwards; the connecting part is provided with a material removing opening, and the wall of the material removing opening, which is close to the cutter head part, is provided with a cutter edge. Through the setting of connecting portion, go material trompil and edge for when the deburring sword carries out the deburring operation, can make the bottom surface of connecting portion paste the surface of the cover tire that needs the deburring, can not further cut into the surface of cover tire when the edge of a knife is the deburring from this to avoid cutting the waterproof line, form the trauma, influence vulcanized finished tire quality.

Description

Trimming knife for demolding of green tires

Technical Field

The utility model belongs to the technical field of vulcanized finished tire processing, and particularly relates to a trimming cutter for a tire blank after demolding.

Background

Whether the formed tire blank is vulcanized by a vulcanizing tank or a vulcanizing machine, rubber edges are arranged on the matching surfaces of the upper die and the lower die and the matching surfaces of the steel ring and the die after the mold is taken out, rubber buttons can be generated in the exhaust holes, trimming is needed, and the appearance of the tire is tidy and attractive. In general, an enterprise uses a trimming knife to trim a flash or a rubber button after a green tire is demolding, the trimming knife used at present is in a rake shape, the cutter head of the trimming knife is square and has a certain width, the edge of the trimming knife faces to the inner side obliquely downwards, the rake-shaped trimming knife can cut the rubber button through pulling back in the trimming process, however, the inventor believes that the outer surface of a tire is arc-shaped, the radian of a waterproof line is smaller, the lower end of the waterproof line is arranged as a matching surface of a steel ring and a mold body, rubber edges can be generated at the position, and the edge of the trimming knife in the rake shape is extremely easy to cut the waterproof line when the trimming knife is pulled back, so that the quality of a vulcanized finished tire is influenced. For this purpose, a trimming knife for the green tire after demolding needs to be designed.

It should be noted that the information disclosed in the above background section is only for enhancing the understanding of the background of the present disclosure, and thus may include information that does not constitute prior art.

Disclosure of Invention

The inventor finds that, because the outer surface of the tire is arc-shaped, the radian of the waterproof line is smaller, the lower end of the waterproof line is set to be the matching surface of the steel ring and the die body, rubber edges can be generated at the waterproof line, and the knife edge is extremely easy to cut the waterproof line when the rake-shaped trimming knife is used for trimming in a back-pull way, so that trauma is formed, and the quality of the vulcanized finished tire is influenced.

In view of at least one of the above technical problems, the present disclosure provides a trimming knife for a green tire after demolding, which has the following specific technical scheme:

the trimming cutter comprises a cutter head and a cutter bar, wherein an S-shaped connecting part is connected between the cutter head and the cutter bar; the longitudinal section of one end of the connecting part, which is close to the cutter head, is concave downwards, and the longitudinal section of one side of the connecting part, which is close to the cutter bar, is convex upwards; the connecting part is provided with a material removing opening, and the hole wall of the material removing opening, which is close to one side of the cutter head, is provided with a cutter edge.

In some embodiments of the present disclosure, the total length of the tool bit and the connection portion is no greater than the length of the tool post.

In some embodiments of the disclosure, the longitudinal section of the cutter head is arc-shaped, the lower surface of the cutter head is in arc-shaped transition with the connecting part, and the width of the cutter head is not greater than 8mm.

In some embodiments of the disclosure, the knife edge is provided at the lowest point of the concave shape of the connecting portion.

In some embodiments of the disclosure, the knife edge is V-shaped.

In some embodiments of the present disclosure, the upper surface of the blade is provided with a sipe extending to the outer end of the blade.

In some embodiments of the present disclosure, the sipe is a V-bottomed groove.

In some embodiments of the present disclosure, the sipe bottom has a thickness of not less than 1mm.

In some embodiments of the present disclosure, the stripping aperture is a long waist aperture.

In some embodiments of the present disclosure, the width of the stripping aperture is 6mm.

Compared with the prior art, the utility model has the following beneficial effects:

through the arrangement of the connecting part, the material removing opening and the knife edge, when the trimming knife performs trimming operation, the bottom surface of the connecting part can be abutted against the outer surface of the outer tire to be trimmed, so that the knife edge cannot further cut into the outer surface of the outer tire during trimming, thereby avoiding cutting waterproof lines, forming trauma and affecting the quality of vulcanized finished tires;

the S-shaped connecting part can be conveniently held by a user and is easy to control;

the technical scheme does not have a knife edge serving as an outer contour, and can effectively avoid false touching and cutting injury when an operator uses the knife edge.

Drawings

FIG. 1 is a schematic side view of example 3 in the structure of the present utility model;

FIG. 2 is a top view of FIG. 1;

the reference numerals in the figures illustrate: 1. a cutter head; 2. a cutter bar; 3. a connection part; 31. removing materials and perforating; 311. a knife edge; 32. knife slot.

Detailed Description

For a better understanding of the objects, structures and functions of the present utility model, reference should be made to the accompanying drawings in which embodiments of the utility model are shown, and in which it is apparent that some, but not all embodiments of the utility model are described.

The component parts themselves are numbered herein only to distinguish between the stated objects and do not have any sequential or technical meaning. In this disclosure, the term "coupled" includes both direct and indirect, "as used herein, unless specifically indicated otherwise. In the description of the present application, it should be understood that the azimuth or positional relationship indicated by the azimuth terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the azimuth or positional relationship shown in the drawings, are merely for convenience of description of the present application and brief description, and do not indicate or imply that the apparatus or unit referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application.

As shown in fig. 1 to 2 of the drawings, a trimming cutter for a green tire after demolding is designed, the trimming cutter comprises a cutter head 1 and a cutter bar 2, an S-shaped connecting part 3 is connected between the cutter head 1 and the cutter bar 2, and the S-shaped connecting part can be conveniently held by a user and is easy to control; the tool bit 1, the connecting part 3 and the tool bar 2 can be integrally formed; the longitudinal section of one end of the connecting part 3 close to the cutter head 1 is concave downwards, and the longitudinal section of one side of the connecting part 3 close to the cutter bar 2 is convex upwards; the connecting portion 3 is provided with a material removing opening 31, the hole wall of the material removing opening 31, which is close to one side of the tool bit 1, is provided with a tool edge 311, and the technical scheme does not have the tool edge serving as an outer contour, so that false collision and cut injury during use of operators are effectively avoided.

When the trimming cutter is used, the bottom surface of the connecting part 3 is attached to the outer surface of a tire needing trimming, the material needing trimming is placed into the material removing opening 31, the cutter edge 311 is attached to the material needing trimming, the cutter bar 2 is pulled back, trimming and material removing can be achieved, when the trimming cutter is used for trimming, the bottom surface of the connecting part 3 can be attached to the outer surface of the outer tire needing trimming through the arrangement of the connecting part 3, the material removing opening 31 and the cutter edge 311, and therefore the cutter edge can not further cut into the outer surface of the outer tire during trimming, and therefore cut waterproof lines are avoided, trauma is formed, and the quality of a vulcanized finished tire is affected.

In the above embodiments, three embodiments are listed to implement the above technical solutions:

example 1

The embodiment discloses a trimming cutter for a green tire after demolding, which comprises a cutter head 1 and a cutter bar 2, wherein an S-shaped connecting part 3 is connected between the cutter head 1 and the cutter bar 2, the S-shaped connecting part can be conveniently held by a user and is easy to operate, and the S-shaped connecting part can be S-shaped, wavy or tri-folded, and the like; the tool bit 1, the connecting part 3 and the tool bar 2 can be integrally formed; the longitudinal section of one end of the connecting part 3 close to the cutter head 1 is concave downwards, and the longitudinal section of one side of the connecting part 3 close to the cutter bar 2 is convex upwards, so that the cutter head 1, the connecting part 3 and the cutter bar 2 are in a spoon shape as a whole; the connecting portion 3 is provided with a material removing opening 31, the hole wall of the material removing opening 31, which is close to one side of the tool bit 1, is provided with a tool edge 311, and the technical scheme does not have the tool edge serving as an outer contour, so that false collision and cut injury during use of operators are effectively avoided.

The total length of the cutter head and the connecting part is not greater than the length of the cutter bar, in this embodiment, the total length of the cutter head and the connecting part is 92mm, the length of the cutter bar 2 is 105mm, and the cutter bar 2 with enough length is convenient for an operator to hold; the longitudinal section of the cutter head 1 is linear, the lower surface of the cutter head 1 is in transition with the folding surface of the connecting part 3, the width of the cutter head 1 is 8mm, and the cutter head 1 is narrower and can adapt to a region with large radian deformation of the outer surface of a tire; the knife edge 311 is arranged at the lowest part of the concave shape of the connecting part 3, so that the gap between the knife edge 311 and the outer surface of the tire is small enough, and the root breaking treatment of the flash and the rubber button is ensured; the knife edge 311 is in a straight line shape.

Example two

The embodiment discloses a trimming cutter for a tire blank after demolding, which is different from the first embodiment in that the total length of the cutter head and the connecting part is 100mm, the length of the cutter bar 2 is 100mm, the longitudinal section of the cutter head 1 is in an arc shape, the lower surface of the cutter head 1 is in arc transition with the cambered surface of the connecting part 3, the cambered surface transition ensures that the connecting part 3 can not scratch the outer surface of the tire when the outer surface of the tire moves, the arc transition can also provide a relatively smooth contact surface, vibration of the connecting part 3 due to roughness of the outer surface is avoided when the outer surface of the tire moves, and the width of the cutter head 1 is 7mm; the knife edge 311 is in a concave arc shape, so that when the knife edge 311 scrapes off flash or glue button, a certain gathering limit is formed for the material to be removed; the upper surface of the knife edge 311 is provided with a knife groove 32 extending to the outer end of the knife head 1, the knife groove 32 is a V-bottom groove, the thickness of the bottom of the knife groove 32 is 1mm, and the whole weight reduction can be realized while material returning is realized; the material removing opening 31 is a round hole, which is convenient for manufacturing and processing.

Example III

As shown in fig. 1 and fig. 2, this embodiment discloses a trimming knife for a tire blank after demolding, and the difference between this embodiment and the second embodiment is that the trimming knife gradually narrows from the cutter bar 2 to the cutter head 1, so that the cutter bar 2 has enough width to facilitate holding, and the cutter head 1 has enough narrowness to facilitate adapting to the area with large radian deformation of the outer surface of the tire, thereby reducing the overall weight; the knife edge 311 is V-shaped, so that when the knife edge 311 scrapes off a flash or a rubber button, a righting limit is formed on a material to be removed, and the inclination of the material is effectively avoided; the material removing opening 31 is a long waist hole, the width of the material removing opening 31 is 6mm, and the material removing opening 31 is suitable for the width of flash or rubber buttons of vulcanized finished tires.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a deburring sword after being used for child base demolding, includes tool bit (1) and cutter arbor (2), its characterized in that: an S-shaped connecting part (3) is connected between the cutter head (1) and the cutter bar (2); the longitudinal section of one end of the connecting part (3) close to the cutter head (1) is concave downwards, and the longitudinal section of one side of the connecting part (3) close to the cutter bar (2) is convex upwards; the connecting part (3) is provided with a material removing opening (31), and the hole wall of the material removing opening (31) close to one side of the cutter head (1) is provided with a cutter edge (311).

2. Trimming blade for green tyre demolding according to claim 1, characterized in that the total length of the cutting head (1) and the connecting portion (3) is not greater than the length of the cutter bar (2).

3. The trimming cutter for a green tire after demolding according to claim 1, wherein the longitudinal section of the cutter head (1) is arc-shaped, the lower surface of the cutter head (1) is in arc-shaped transition with the connecting part (3), and the width of the cutter head (1) is not more than 8mm.

4. The trimming blade for green tyre demolding according to claim 1, wherein said blade (311) is provided at the lowest point of the concave shape of said connecting portion (3).

5. The trimming blade for green tyre after demolding according to claim 4, wherein said blade (311) is V-shaped.

6. The trimming blade for green tyre demolding according to claim 4, characterized in that the upper surface of the blade (311) is provided with a blade groove (32) extending to the outer end of the blade (1).

7. The trimming blade for green tyre after demolding according to claim 6, wherein the blade groove (32) is a V-bottomed groove.

8. Trimming blade for green tyre demolding according to claim 6, characterized in that the thickness of the bottom of the sipe (32) is not lower than 1mm.

9. The trimming blade for green tyre after demolding according to claim 1, wherein the stripping aperture (31) is a long waist hole.

10. Trimming blade for green tyre demolding according to claim 9, characterized in that the width of the stripping aperture (31) is 6mm.