A fixed knife mechanism for cutting tires

Abstract

The present invention discloses a fixed knife mechanism for cutting tires, comprising a fixed knife assembly, the fixed knife assembly can be extended into or out of the tire, the fixed knife assembly comprises a rotating shaft, a rotating wheel assembly mounted on the rotating shaft, the rotating wheel assembly comprises an upper rotating wheel and a lower rotating wheel, and a gap is provided between the upper rotating wheel and the lower rotating wheel for inserting a cutting blade. The fixed knife mechanism can position the tire for cutting, and effectively improve the cutting efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of tire cutting, in particular to a fixed knife mechanism for cutting tires. Background Art

[0002] At present, with the progress of society and the development of economy, various vehicles have become indispensable consumables in people's production, life, work, etc. Among them, tires, in particular, are a high-consumable product, and a large number of tires are replaced every year. Therefore, the recycling and reuse of tire resources has become an indispensable link in the automotive industry chain. Tires are indispensable parts of cars, so their large-scale production and application lead to waste of rubber raw materials. The existing practice is to recycle tires to avoid waste of resources.

[0003] The treatment of waste tires generally includes the following process: breaking the tires into small pieces, then grinding the small pieces of tires, and then sorting and recycling them. The final recycled products mainly include rubber, steel wires and fibers embedded in the rubber, etc.

[0004] When recycling tires, most of them are directly crushed into rubber. However, this method requires the entire tire to be crushed, which requires a large amount of power and consumes a lot of energy. Therefore, there is also a method of first cutting the tire in half perpendicular to its axis, then cutting the tire into strips and then cutting into blocks. In the tire cutting process, the cutting blade used to cut the tire is easy to move randomly during the cutting process, resulting in slow cutting speed, easy interruption of cutting, and poor cutting quality. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a fixed knife mechanism for cutting tires, which can position the tires and improve cutting efficiency.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A fixed knife mechanism for cutting tires comprises a fixed knife assembly, the fixed knife assembly can extend into or out of the tire, the fixed knife assembly comprises a rotating shaft, a rotating wheel assembly mounted on the rotating shaft, the rotating wheel assembly comprises an upper rotating wheel and a lower rotating wheel, and a gap is provided between the upper rotating wheel and the lower rotating wheel for inserting a cutting blade.

[0008] Furthermore, the outer surfaces of the upper rotating wheel and the lower rotating wheel are both provided with protrusions.

[0009] Further, the upper rotating wheel is detachably mounted with an upper fixed knife, the lower rotating wheel is detachably mounted with a lower fixed knife, the upper fixed knife and the lower fixed knife are arranged opposite to each other, and the gap is between the upper fixed knife and the lower fixed knife.

[0010] Furthermore, it also includes a guide assembly, which includes a mounting seat, a guide block and a guide rail assembly, the rotating shaft is arranged on the mounting seat, the mounting seat is arranged on the guide block, and the guide block is slidably matched with the guide rail assembly.

[0011] Furthermore, it also includes a guide drive mechanism connected to the guide block, and the guide drive mechanism is used to drive the guide block to move up and down.

[0012] Furthermore, the mounting seat includes a vertical portion and a horizontal portion connected to the vertical portion, the vertical portion is connected to the guide block, and the rotating shaft is vertically pivoted to the horizontal portion.

[0013] Further, the guide rail assembly includes a first guide rail and a second guide rail, the first guide rail is provided with a square guide groove, the second guide rail is provided with a V-shaped guide groove or a trapezoidal guide groove, the square guide groove and the V-shaped guide groove or the trapezoidal guide groove are arranged opposite to each other, the first surface of the guide block is provided with a first guide strip matching the square guide groove, and the second surface of the guide block opposite to the first surface is provided with a second guide strip matching the V-shaped guide groove or the trapezoidal guide groove.

[0014] Furthermore, two opposite side surfaces of the V-shaped guide groove or the trapezoidal guide groove are provided with bending grooves.

[0015] Furthermore, a strip-shaped groove is provided at the bottom of the V-shaped guide groove or the trapezoidal guide groove along the length direction, and the second guide strip is provided with a strip-shaped protrusion matching the strip-shaped groove.

[0016] Furthermore, it also includes a lifting component, which includes a lifting platform for placing tires and a lifting drive mechanism for driving the lifting platform to perform lifting movements.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] When cutting a tire, first extend the fixed knife assembly into the tire so that the rotating wheel assembly rests against the inner wall of the tire, so as to position the tire, and then the cutting blade cuts the tire. When cutting, the cutting blade can pass through the gap of the rotating wheel assembly. Since the gap is provided, the rotating wheel assembly is prevented from contacting the cutting blade, so that the cutting blade can cut the tire more thoroughly. By providing the fixed knife assembly, the tire can be effectively positioned, and the tire can be prevented from moving randomly during cutting, which effectively improves the cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 One of the schematic diagrams of a fixed knife mechanism for cutting tires provided by the present invention;

[0020] Figure 2A second schematic diagram of a fixed knife mechanism for cutting tires provided by the present invention;

[0021] Figure 3 A third schematic diagram of a fixed knife mechanism for cutting tires provided by the present invention;

[0022] Figure 4 An exploded view of a guide assembly of a fixed knife mechanism for cutting tires provided by the present invention;

[0023] Figure 5 A schematic diagram of a guide block of a fixed knife mechanism for cutting tires provided by the present invention;

[0024] Figure 6 A schematic diagram of a second guide rail of a fixed knife mechanism for cutting tires provided by the present invention.

[0025] In the figure: 1. mounting base; 2. vertical part; 3. horizontal part; 4. rotating shaft; 5. upper rotating wheel; 6. lower rotating wheel; 7. gap; 8. upper fixed knife; 9. lower fixed knife; 10. guide block; 101. first guide strip; 102. second guide strip; 103. strip-shaped protrusion; 11. first guide rail; 111. square guide groove; 12. second guide rail; 121. V-shaped guide groove; 122. bending groove; 123. strip-shaped card slot; 13. guide drive mechanism; 14. tire; 15. cutting blade. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "vertical", "top", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "one", "another" and the like are used to distinguish similar elements, and these terms and other similar terms are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In each of the drawings, the same or corresponding elements are marked with corresponding figure numbers (for example, the elements marked with "1XX" and "2XX" have the same structure and similar functions).

[0029] like Figure 1-6 As shown, a fixed knife mechanism for cutting tires provided by the present invention includes a fixed knife assembly, and the fixed knife assembly can extend into or out of the tire 14. The fixed knife assembly includes a rotating shaft 4 and a rotating wheel assembly installed on the rotating shaft 4. The rotating wheel assembly includes an upper rotating wheel 5 and a lower rotating wheel 6. A gap 7 is provided between the upper rotating wheel 5 and the lower rotating wheel 6 for inserting the cutting knife 15.

[0030] In this embodiment, reference Figure 3 When cutting the tire 14, the fixed knife assembly is first extended into the tire 14, and then the cutting blade 15 is moved in the direction close to the tire 14 to push the tire 14 to move, so that the rotary wheel assembly can be against the inner surface of the tire 14, so that the tire 14 is clamped by the internal rotary wheel assembly and the external cutting blade 15, thereby realizing the positioning of the tire 14, and then the cutting blade 15 is rotated to cut the tire 14. During cutting, the cutting blade 15 can pass through the gap 7 of the rotary wheel assembly. Due to the provision of the gap 7, the rotary wheel assembly is prevented from directly contacting the cutting blade 15, so that the cutting blade 15 can cut the tire 14 more thoroughly. Through the mutual cooperation of the fixed knife assembly and the cutting blade 15, the cutting positioning of the tire 14 is realized, and the tire 14 is prevented from moving randomly during cutting, which effectively improves the cutting efficiency.

[0031] It should be noted that the fixed knife assembly of this embodiment can be placed inside the tire 14 in a variety of ways. In one way, a guide rail is provided on the platform where the tire 14 is placed, and the fixed knife assembly can be driven by a driving device to enter the tire 14 along the guide rail. In another embodiment, the central part of the platform where the tire 14 is placed can also be set as an empty hole, and the fixed knife assembly is driven by a lifting mechanism to rise along the empty hole and be placed inside the tire 14.

[0032] Preferably, the outer surfaces of the upper rotating wheel 5 and the lower rotating wheel 6 are both provided with protrusions. In this way, during the cutting process, the friction between the fixed knife assembly and the tire is increased, so that the fixed knife assembly can better cooperate with the cutting blade, thereby driving the tire to automatically rotate in the opposite direction of the cutting direction.

[0033] Preferably, the upper rotating wheel 5 is equipped with an upper fixed knife 8, and the lower rotating wheel 6 is equipped with a lower fixed knife 9. The upper fixed knife 8 and the lower fixed knife 9 are arranged opposite to each other, and the gap 7 is between the upper fixed knife 8 and the lower fixed knife 9. When the cutting blade is inserted into the gap 7, the upper fixed knife 8 and the lower fixed knife 9 both rotate by themselves, and play a guiding role in the rotation of the tire 14. Therefore, the upper fixed knife 8 and the lower fixed knife 9 will have a certain wear as the number of cutting increases. Since the upper fixed knife 8 and the lower fixed knife 9 are detachably installed on the upper rotating wheel 5 and the lower rotating wheel 6, respectively, they can be replaced at any time. By installing the upper fixed knife 8 and the lower fixed knife 9 on the upper rotating wheel 5 and the lower rotating wheel 6, the wear of the upper rotating wheel 5 and the lower rotating wheel 6 is avoided.

[0034] Preferably, this embodiment shows a specific implementation method of driving a fixed blade assembly to extend into the interior of a tire 14, including a guide assembly, the guide assembly including a mounting seat 1, a guide block 10 and a guide rail assembly, the rotating shaft 4 is arranged on the mounting seat 1, the mounting seat 1 is arranged on the guide block 10, and the guide block 10 is slidably matched with the guide rail assembly. Specifically, this embodiment also includes a guide drive mechanism 13 connected to the guide block 10, and the guide drive mechanism 13 is used to drive the guide block 10 to move up and down.

[0035] Based on the above structure, the guide drive mechanism 13 drives the guide block 10 to move up and down along the track of the guide rail assembly, and then drives the fixed knife assembly to extend into the tire 14. The guide drive mechanism 13 can be a driving component such as a cylinder, a motor or an oil cylinder.

[0036] Specifically, the mounting base 1 includes a vertical portion 2 and a horizontal portion 3 connected to the vertical portion 2 , the vertical portion 2 is connected to the guide block 10 , and the rotating shaft 4 is vertically pivoted to the horizontal portion 3 .

[0037] Preferably, the guide rail assembly includes a first guide rail 11 and a second guide rail 12, the first guide rail 11 is provided with a square guide groove 111, the second guide rail 12 is provided with a V-shaped guide groove 121 or a trapezoidal guide groove, the square guide groove 111 and the V-shaped guide groove 121 or the trapezoidal guide groove are arranged opposite to each other, the first surface of the guide block 10 is provided with a first guide strip 101 matching the square guide groove 111, and the second surface of the guide block 10 opposite to the first surface is provided with a second guide strip 102 matching the V-shaped guide groove 121 or the trapezoidal guide groove.

[0038] In this embodiment, the second guide bar 102 of the guide block 10 cooperates with the second guide rail 12 having a V-shaped guide groove 121 or a trapezoidal guide groove, that is, the second guide bar 102 and the second guide rail 12 are abutted against each other through the inclined surfaces. Experiments have shown that the above design can significantly reduce the gap between the guide block 10 and the second guide rail 12, so that the connection between the guide block 10 and the second guide rail 12 is tighter and firmer, which can ensure the stable operation of the guide assembly and increase the service life of the guide assembly.

[0039] Specifically, two opposite sides of the V-shaped guide groove 121 or the trapezoidal guide groove are provided with bending grooves 122. By providing the bending grooves 122, the friction between the second guide bar 102 and the second guide rail 12 is reduced, so that the guide block 10 slides more smoothly.

[0040] More specifically, the bottom of the V-shaped guide groove 121 or the trapezoidal guide groove is provided with a strip-shaped groove 123 along the length direction, and the second guide bar 102 is provided with a strip-shaped protrusion 103 matching the strip-shaped groove 123. When the second guide rail 12 and the guide bar are assembled, the strip-shaped protrusion 103 is engaged with the strip-shaped groove 123, so that the second guide rail 12 and the guide bar have a higher degree of fit and a more secure connection.

[0041] Preferably, a lifting assembly is further included, and the lifting assembly includes a lifting platform for placing the tire 14 and a lifting drive mechanism for driving the lifting platform to perform lifting motion. In this embodiment, the lifting drive mechanism drives the lifting platform to move toward or away from the fixed knife assembly, so that the fixed knife assembly can extend into or out of the tire 14. The lifting drive mechanism can be a driving component such as a screw rod and a cylinder.

[0042] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A fixed knife mechanism for cutting tires, characterized in that: The fixed knife assembly comprises a fixed knife assembly, which can be extended into or out of the tire, and the fixed knife assembly comprises a rotating shaft and a rotating wheel assembly mounted on the rotating shaft, wherein the rotating wheel assembly comprises an upper rotating wheel and a lower rotating wheel, and a gap is provided between the upper rotating wheel and the lower rotating wheel for inserting a cutting blade; The upper rotating wheel is detachably mounted with an upper fixed knife, and the lower rotating wheel is detachably mounted with a lower fixed knife, the upper fixed knife and the lower fixed knife are arranged opposite to each other, and the gap is between the upper fixed knife and the lower fixed knife; It also includes a guide assembly, which includes a mounting seat, a guide block and a guide rail assembly, the rotating shaft is arranged on the mounting seat, the mounting seat is arranged on the guide block, and the guide block is slidably matched with the guide rail assembly; The guide rail assembly comprises a first guide rail and a second guide rail, the first guide rail is provided with a square guide groove, the second guide rail is provided with a V-shaped guide groove or a trapezoidal guide groove, the square guide groove and the V-shaped guide groove or the trapezoidal guide groove are arranged opposite to each other, the first surface of the guide block is provided with a first guide strip matching the square guide groove, and the second surface of the guide block opposite to the first surface is provided with a second guide strip matching the V-shaped guide groove or the trapezoidal guide groove; The V-shaped guide groove or the trapezoidal guide groove has two opposite sides provided with bending grooves; The bottom of the V-shaped guide groove or the trapezoidal guide groove is provided with a strip-shaped groove along the length direction, and the second guide strip is provided with a strip-shaped protrusion matching the strip-shaped groove.

2. A fixed knife mechanism for cutting tires as claimed in claim 1, characterized in that: The outer surfaces of the upper rotating wheel and the lower rotating wheel are both provided with protrusions.

3. A fixed knife mechanism for cutting tires as claimed in claim 1, characterized in that: It also includes a guide drive mechanism connected to the guide block, and the guide drive mechanism is used to drive the guide block to move up and down.

4. A fixed knife mechanism for cutting tires as claimed in claim 1, characterized in that: The mounting seat comprises a vertical part and a horizontal part connected to the vertical part, the vertical part is connected to the guide block, and the rotating shaft is vertically pivoted on the horizontal part.

5. A fixed knife mechanism for cutting tires as claimed in claim 1, characterized in that: It also includes a lifting component, which includes a lifting platform for placing tires and a lifting drive mechanism for driving the lifting platform to perform lifting movements.

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