Tire cutting device

Abstract

The present invention discloses a tire cutting device, comprising a fixed frame, a circular blade drive mechanism, and a first circular blade and a second circular blade respectively pivoted on the fixed frame; the blades of the first circular blade and the second circular blade intersect and fit each other; the circular blade drive mechanism is used to drive the first circular blade and the second circular blade to rotate respectively, so that the first circular blade and the second circular blade cooperate to bite and cut the tire entering between the blades of the two. The present invention cooperates with the circular blade drive mechanism, the first circular blade and the second circular blade. After the tire is fed between the blades of the first circular blade and the second circular blade, the first circular blade and the second circular blade cooperate to bite and cut the tire when they rotate under the drive of the circular blade drive mechanism, completing the tire strip cutting operation. In this way, the tire strip cutting operation is realized by cooperating with the motor, and the tire can be cut into long strips quickly and efficiently, so as to facilitate the subsequent cutting of the tire into small pieces, thereby realizing the resource recycling of the tire.

Description

Technical Field

[0001] The invention relates to the technical field of tire recycling equipment, and in particular to a tire cutting device. Background Art

[0002] At present, with the progress of society and the development of economy, various vehicles have become indispensable consumables for people's life and work. Tires are indispensable parts of vehicles, so their mass 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] Therefore, how to divide the whole tire into small pieces for subsequent recycling has become the primary problem to be solved in the entire tire recycling process. In order to cut the waste tires into pieces, the waste tire processing equipment previously applied for by the applicant provides an implementation scheme, which uses an interlocking double-axis machine to tear the tires into small pieces. However, the applicant found in the specific implementation of the scheme that the equipment is relatively large and requires a relatively large installation site for equipment installation. At the same time, its efficiency can only be demonstrated when processing in large quantities. If the processing volume is relatively small, its power consumption is significantly higher. At the same time, the equipment cost is also relatively high, which is not suitable for the needs of small factories and small batch processing.

[0005] Therefore, developing a waste tire treatment solution that is more suitable for various needs will be more conducive to recycling waste tires more flexibly and efficiently. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a tire cutting device, which can cooperate with the motor to realize the tire strip cutting operation, and can quickly and efficiently cut the tire into long strips to facilitate the subsequent cutting of the tire into small pieces, thereby realizing the resource recycling of the tire.

[0007] The purpose of the present invention is achieved by the following technical solutions:

[0008] A tire cutting device comprises a fixing frame, a circular cutter disc driving mechanism, and a first circular cutter disc and a second circular cutter disc respectively pivoted on the fixing frame; the blades of the first circular cutter disc and the second circular cutter disc intersect and fit each other; the circular cutter disc driving mechanism is used to respectively drive the first circular cutter disc and the second circular cutter disc to rotate, so that the first circular cutter disc and the second circular cutter disc cooperate to bite and cut the tire entering between the blades of the first circular cutter disc and the second circular cutter disc.

[0009] Furthermore, the circular cutter disc drive mechanism includes a first rotating motor and a gear transmission structure; the output shaft of the first rotating motor is transmission-connected to the second circular cutter disc and is used to drive the second circular cutter disc to rotate; the second circular cutter disc is transmission-connected to the first circular cutter disc through the gear transmission structure, so that when the second circular cutter disc rotates, the first circular cutter disc is linked to rotate through the gear transmission structure, and the rotation direction of the first circular cutter disc is opposite to the rotation direction of the second circular cutter disc.

[0010] Furthermore, the circular cutter disc drive mechanism includes a second rotating motor and a third rotating motor; the output shaft of the second rotating motor is drivingly connected to the first circular cutter disc; the output shaft of the third rotating motor is drivingly connected to the second circular cutter disc.

[0011] Furthermore, the tire cutting device also includes a toggle gear; the toggle gear is installed on the second circular cutter disc and is coaxially arranged with the second circular cutter disc; when the toggle gear rotates with the second circular cutter disc, the tooth portion of the toggle gear can toggle the tire so that the tire rotates around its central axis relative to the first circular cutter disc and the second circular cutter disc.

[0012] Furthermore, the first circular cutter disc comprises a cutter disc body, a blade disc body and a locking structure; a positioning structure is provided between the cutter disc body and the blade disc body; the positioning structure comprises a positioning block and a positioning groove; one of the positioning block and the positioning groove is provided on the cutter disc body, and the other is provided on the blade disc body; the positioning groove and the positioning block are matched and inserted so that the central axes of the cutter disc body and the blade disc body coincide; the locking structure is used to fix the cutter disc body and the blade disc body in fixed connection; the blade of the blade disc body protrudes from the cutter disc body; the circular cutter disc drive mechanism is transmission-connected to the cutter disc body.

[0013] Furthermore, the positioning groove is provided on the blade disc body; the positioning block is provided on the blade seat disc body; the positioning groove is coaxially provided with the blade disc, and the positioning block is coaxially provided with the blade seat disc.

[0014] Furthermore, a side of the blade disc body away from the blade seat disc body is recessed in a direction close to the blade seat disc body to form a receiving groove; the locking structure includes a first socket opened on the blade seat disc body, a second socket opened at the bottom of the receiving groove, a screw and a nut; the rod of the screw passes through the first socket and the second socket and is threadedly engaged with the nut; the head of the screw is located in the receiving groove, and the thickness of the head of the screw is less than or equal to the depth of the receiving groove; the positioning groove is opened at the bottom of the receiving groove.

[0015] Furthermore, the surface tangent to the first circular cutter disc and the second circular cutter disc forms a first section; the surface tangent to the second circular cutter disc and the first circular cutter disc forms a second section; the diameter of the first section is greater than the diameter of the second section; in a horizontal direction parallel to the first section, the center of the first section and the center of the second section are offset from each other.

[0016] Furthermore, the tire cutting device also includes a pressing mechanism, which includes a pressing head, a connecting arm and a cylinder; the pressing head is installed at one end of the connecting arm and is used to press the tire against the first circular cutter disc or the second circular cutter disc; the middle part of the connecting arm is hinged on the fixed frame; the telescopic rod of the cylinder is hinged on the connecting arm, and the cylinder body of the cylinder is hinged on the fixed frame.

[0017] Furthermore, the tire cutting device comprises a pressing mechanism; the pressing mechanism can be connected to the first circular cutter disc or the second circular cutter disc, so as to drive the first circular cutter disc and the second circular cutter disc to fit tightly together.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention cooperates with a circular cutter disc drive mechanism, a first circular cutter disc and a second circular cutter disc. After the tire is fed between the blades of the first circular cutter disc and the second circular cutter disc, the first circular cutter disc and the second circular cutter disc cooperate to engage the tire and cut it when they rotate under the drive of the circular cutter disc drive mechanism to complete the tire strip cutting operation. In this way, the tire strip cutting operation is realized in a motorized manner, and the tire can be cut into long strips quickly and efficiently, so as to facilitate the subsequent cutting of the tire into small pieces, thereby realizing the resource recycling of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the tire cutting device of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the first circular cutter head and the first rotating motor of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the blade disc body of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the second circular cutter head and the second rotating motor of the present invention;

[0024] Figure 5 This is a first embodiment of the first circular cutter disc and the second circular cutter disc of the present invention;

[0025] Figure 6 This is a second embodiment of the first circular cutter disc and the second circular cutter disc of the present invention.

[0026] In the figure: 10, fixed frame; 20, first circular cutter disc; 21, cutter disc body; 22, blade disc body; 23, locking structure; 231, first jack; 232, second jack; 30, circular cutter disc drive mechanism; 31, second rotary motor; 32, third rotary motor; 40, second circular cutter disc; 50, shifting gear; 60, positioning structure; 61, positioning block; 62, positioning groove; 70, accommodating groove; 80, pressing mechanism; 81, cylinder; 82, connecting arm; 83, pressing head; 90, protective cover; 100, first section. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figure 1-4 A tire cutting device shown in the figure includes a fixing frame 10, a circular blade disc driving mechanism 30, and a first circular blade disc 20 and a second circular blade disc 40 respectively pivoted on the fixing frame 10, specifically, the first circular blade disc 20 and the second circular blade disc 40 are arranged in an upper and lower part; the blades of the first circular blade disc 20 and the second circular blade disc 40 intersect and fit each other, and in a preferred embodiment, a pressing mechanism can be provided, and the pressing mechanism can be connected to the first circular blade disc 20 or the second circular blade disc 40, so as to drive the first circular blade disc 20 and the second circular blade disc 40 to fit closely. In one embodiment, the pressing mechanism is coaxially arranged with the first circular blade disc 20 and drives the first circular blade disc 20 to press closely on the second circular blade disc 40. The pressing mechanism can adopt any structure that can realize the above-mentioned function, and is not limited here, such as being realized by a compression spring, or being realized by magnetic force. The circular cutter disc driving mechanism 30 is used to respectively drive the first circular cutter disc 20 and the second circular cutter disc 40 to rotate, so that the first circular cutter disc 20 and the second circular cutter disc 40 cooperate to bite and cut the tire entering between the blades of the two. In this way, after the outermost circumference of the external tire is placed between the first circular cutter disc 20 and the second circular cutter disc 40, the circular cutter disc driving mechanism 30 drives the first circular cutter disc 20 and the second circular cutter disc 40 to rotate. During the rotation process, the first circular cutter disc 20 and the second circular cutter disc 40 can start cutting from the outermost circumference of the tire. At this time, the first circular cutter disc 20 and the second circular cutter disc 40 cooperate to bite the tire during the cutting process and drive the tire to rotate, thereby continuously transporting the other parts of the tire between the blades of the first circular cutter disc 20 and the second circular cutter disc 40, thereby realizing the cutting of the tire into strips, and the tire can be cut into long strips quickly and efficiently to facilitate the subsequent cutting of the tire into small pieces, thereby realizing the resource recycling of the tire.

[0029] In addition, under the drive of the circular cutter disc drive mechanism 30, the first circular cutter disc 20 and the second circular cutter disc 40 rotate in opposite directions, that is, Figure 6 As shown, the first circular cutter disc 20 rotates clockwise, and the second circular cutter disc 40 rotates counterclockwise, so that the cutting directions of the first circular cutter disc 20 and the second circular cutter disc 40 are the same, both of which are as shown in FIG. Figure 6 The tire can be cut in the direction indicated by arrow G.

[0030] The circular cutter disc drive mechanism 30 can be implemented in the following manner: the circular cutter disc drive mechanism 30 includes a first rotating motor and a gear transmission structure; the output shaft of the first rotating motor is connected to the second circular cutter disc 40 and is used to drive the second circular cutter disc 40 to rotate; the second circular cutter disc 40 is connected to the first circular cutter disc 20 through the gear transmission structure, so that when the second circular cutter disc 40 rotates, the first circular cutter disc 20 is linked to rotate through the gear transmission structure, and the rotation direction of the first circular cutter disc 20 is opposite to the rotation direction of the second circular cutter disc 40. However, the driving gear and the passive gear are vulnerable parts and are easily damaged, and since the first circular cutter disc 20 and the second circular cutter disc 40 need to rotate simultaneously through the gear transmission structure, the energy efficiency conversion efficiency will be reduced. Specifically, the gear transmission structure includes a driving gear fixedly connected to the first circular cutter disc 20 and a passive gear fixedly connected to the second circular cutter disc 40; specifically, the output shaft of the first rotating motor is connected to the first circular cutter disc 20, and the driving gear and the passive gear are meshed.

[0031] The above-mentioned circular cutter disc drive mechanism 30 may also preferably adopt the following implementation mode: the circular cutter disc drive mechanism 30 includes a second rotating motor 31 and a third rotating motor 32; the output shaft of the second rotating motor 31 is transmission-connected to the first circular cutter disc 20; the output shaft of the third rotating motor 32 is transmission-connected to the second circular cutter disc 40; at this time, by controlling the rotation direction of the rotating shafts of the first rotating motor 31 and the second rotating motor 31, the rotation direction of the first circular cutter disc 20 and the second circular cutter disc 40 can be controlled; here, by using the first rotating motor 31 to drive separately, there is no problem of damage to wearing parts such as gears; on the other hand, under the condition of equal energy consumption, since the first rotating motor and the second rotating motor 31 are used to drive separately, the energy loss generated by the intermediate driving gear and the passive gear during the transmission process can be omitted, and the energy loss is smaller.

[0032] Furthermore, the tire cutting device further comprises a toggle gear 50; the toggle gear 50 is mounted on the second circular blade disc 40 and is coaxially arranged with the second circular blade disc 40; when the toggle gear 50 rotates with the second circular blade disc 40, the tooth portion of the toggle gear 50 can toggle the tire so that the tire rotates around its central axis relative to the first circular blade disc 20 and the second circular blade disc 40. In this way, when part of the tire enters between the first circular blade disc 20 and the second circular blade disc 40 for cutting, the toggle gear 50 rotates with the second circular blade disc 40 and simultaneously toggle the tire to rotate. At this time, on the basis of the first circular blade disc 20 and the second circular blade disc 40 cooperating to bite the tire, it is further ensured that the tire continues to rotate circumferentially relative to the first circular blade disc 20 and the second circular blade disc 40.

[0033] It is worth mentioning that the teeth of the shifting gear 50 extend along the rotation direction of the second circular cutter disc 40 to further ensure the shifting of the tire.

[0034] In order to realize the transmission connection between the first circular cutter disc 20 and the circular cutter disc driving mechanism 30, here, the first circular cutter disc 20 includes a cutter disc body 21, a blade disc body 22 and a locking structure 23; the locking structure 23 is used to fix the cutter disc body 21 and the blade disc body 22 in connection; the blade disc body 22 is coaxially arranged with the cutter disc body 21, and the blade of the blade disc body 22 protrudes out of the cutter disc body 21; the circular cutter disc driving mechanism 30 is transmission-connected with the cutter disc body 21, so that the strength of the blade disc body 22 can be enhanced through the cutter disc body 21, and the direct connection between the blade disc body 22 and the circular cutter disc driving mechanism 30 to damage the structure of the blade disc body 22 can be avoided.

[0035] It should be noted that the diameter of the blade disc body 22 is greater than the diameter of the blade seat disc body 21 , so as to ensure that the blade of the blade disc body 22 protrudes out of the blade disc body 22 .

[0036] Furthermore, the positioning structure 60 includes a positioning block 61 and a positioning groove 62; one of the positioning block 61 and the positioning groove 62 is arranged on the tool seat disc body 21, and the other is arranged on the blade disc body 22; the positioning groove 62 and the positioning block 61 are matched and inserted so that the central axes of the tool seat disc body 21 and the blade disc body 22 coincide with each other. At this time, the coaxial setting of the tool seat disc body 21 and the blade disc body 22 is realized, and there is no need to manually judge the coaxiality of the tool seat disc body 21 and the blade disc body 22 with the naked eye and perform multiple position adjustments, thereby simplifying the installation procedure of the first circular tool disc 20.

[0037] The present invention discloses a further implementation of the positioning structure 60, specifically, the positioning groove 62 is opened on the blade disc body 22, and the positioning block 61 is arranged on the blade seat disc body 21; more specifically, the positioning groove 62 is coaxially arranged with the blade disc body 22, and the positioning block 61 body and the blade seat disc body 21 are coaxially arranged, so that after the positioning groove 62 body is inserted into the positioning seat, the blade disc body 22 and the blade seat disc body 21 are coaxially arranged; of course, the positioning structure 60 can also adopt the following implementation mode, specifically, the positioning groove 62 is opened on the blade seat disc body 21, and the positioning block 61 is arranged on the blade disc body 22; more specifically, the positioning groove 62 is coaxially arranged with the blade seat disc body 21, and the positioning block 61 and the blade disc body 22 are coaxially arranged.

[0038] The present invention also discloses another embodiment of the positioning structure 60, wherein the positioning block 61 is a non-equilateral right triangle or other irregular shapes, etc., and the positioning groove 62 is also a non-equilateral right triangle or other irregular shapes, etc. having the same shape as the positioning block 61. In this way, by matching the positioning groove 62 and the positioning, the relative positioning of the blade disc body 22 and the blade seat disc body 21 can be achieved, thereby achieving the coaxial setting of the two.

[0039] Specifically, the locking structure 23 includes a first socket 231 provided on the knife seat disc body 21, a second socket 232 provided on the blade disc body 22, a screw and a nut; wherein the rod of the screw passes through the first socket 231 and the second socket 232 and is threadedly engaged with the nut, thereby locking the knife seat disc body 21 and the blade disc body 22. At this time, the knife seat disc body 21 and the blade disc body 22 can be replaced by unscrewing the screw and the nut.

[0040] More specifically, the side of the blade disc body 22 away from the blade seat disc body 21 is recessed in the direction close to the blade seat disc body 21 to form a receiving groove 70; the second insertion hole 232 is opened at the bottom of the receiving groove 70, and the positioning groove 62 is opened at the bottom of the receiving groove 70; the head of the screw is located in the receiving groove 70, and the thickness of the head of the screw is less than or equal to the depth of the receiving groove 70, so that the head of the screw is prevented from protruding out of the blade disc body 22, thereby preventing the head of the screw from scraping other working equipment or operators during operation.

[0041] Furthermore, the receiving groove 70 and the positioning groove 62 are coaxially arranged.

[0042] Since the tire contains materials with relatively high hardness such as steel wire, preferably, the blade disc body 22 is in a truncated cone shape; the upper bottom surface of the blade disc body 22 faces the blade seat disc body 21; Figure 3As shown, the angle ∠A between the lower bottom surface of the blade disc body 22 and the side surface of the blade disc body 22 is 40-50°, and a blade edge is formed at the intersection of the lower bottom surface of the blade disc body 22 and the side surface of the blade disc body 22. Specifically, the angle is preferably 44.5°. At this time, the blade edge of the blade disc body 22 is relatively sharp, and the thickness of the blade disc body 22 is sufficient, thereby avoiding the blade from being broken by materials such as cutting wire.

[0043] The tire strip cutting device also includes a protective cover 90, which is fixed on the body of the motor, and a gap cover is arranged outside the knife seat disc body 21 and the blade disc body 22. It can be understood that there are gaps between the protective cover 90 and the knife seat disc body 21 and the blade disc body 22 to avoid cutting the protective cover 90 during the rotation of the blade disc body 22, and the blade of the blade disc body 22 extends out of the protective cover 90; in this way, the setting of the protective cover 90 separates the cutter assembly, thereby reducing the possibility of accidental cutting.

[0044] It is worth mentioning that the second circular cutter disc 40 can also adopt a structure in which a cutter seat and a blade cooperate, wherein the cutter disc and the blade can be coaxially arranged through the insertion and cooperation of the positioning cavity and the positioning plug; further, the blade is in a truncated cone shape; Figure 4 As shown, the angle ∠B between the lower bottom surface of the blade and the side surface of the blade is 40-50°, and the intersection of the lower bottom surface of the blade and the side surface of the blade forms a blade edge. Specifically, the angle A is preferably 48°.

[0045] Further, the surface tangent to the first circular cutter disc 20 and the second circular cutter disc 40 forms a first cut surface 100; here, the first cut surface 100 is the lower bottom surface of the blade disc body 22; the surface tangent to the first circular cutter disc 20 and the second circular cutter disc 40 forms a second cut surface; at this time, the first circular cutter disc 20 and the second circular cutter disc 40 can adopt the following first embodiment: the first cut surface 100 and the second cut surface can be set to have equal diameters, and in the horizontal direction parallel to the first cut surface 100, the center of the first cut surface 100 and the center of the second cut surface coincide with each other, such as Figure 5 As shown, the angle ∠D formed at the intersection of the first circular cutter disc 20 and the second circular cutter disc 40, at this time, the edges of the first circular cutter disc 20 and the second circular cutter disc 40 are flush, and the edges of the first circular cutter disc 20 and the second circular cutter disc 40 are easy to abut against the tire at the same time, which is not conducive to the tire entering between the two, that is, it is not conducive to the tire entering the angle ∠D; the first circular cutter disc 20 and the second circular cutter disc 40 can adopt the following second embodiment: preferably, the diameter of the first section 100 is greater than the diameter of the second section; in the horizontal direction parallel to the first section 100 (such as Figure 6 In the direction indicated by arrow F), the center of the first section 100 and the center of the second section are offset from each other. Figure 6 As shown, the angle ∠E is formed at the intersection of the first circular cutter disc 20 and the second circular cutter disc 40. At this time, the edges of the right sides of the first circular cutter disc 20 and the second circular cutter disc 40 are staggered, and the tire can first contact the second circular cutter disc 40 from the right side of the first cutter disc protruding from the lower area outside the second cutter disc, and then, under the drive of the second circular cutter disc 40, the tire is brought between the first circular cutter disc 20 and the second circular cutter disc 40, that is, within the angle ∠E, which is easy to feed and easy to cut.

[0046] When the first circular blade disc 20 and the second circular blade disc 40 initially cut the tire, the tire does not engage with the first circular blade disc 20 and the second circular blade disc 40 at the beginning. At this time, the tire is prone to sinking under the impact of the first circular blade disc 20 and the second circular blade disc 40, which makes the initial cutting difficult; therefore, the tire slitting device also includes a pressing mechanism 80, which is used to push the tire so that the tire tread entering between the first circular blade disc 20 and the second circular blade disc 40 is close to the blade of the first circular blade disc 20 or the blade of the second circular blade disc 40. In this way, when the first circular blade disc 20 or the second circular blade disc 40 rotates, the tire tread is close to the first circular blade disc 20 or the second circular blade disc 40. At this time, the first circular blade disc 20 and the second circular blade disc 40 can smoothly cut into the tire and drive the tire to rotate, thereby facilitating the subsequent engagement of the tire.

[0047] Specifically, the pressing mechanism 80 includes a cylinder 81, a connecting arm 82 and a pressing head 83; the cylinder body of the cylinder 81 is hinged on the fixed frame 10, the telescopic rod of the cylinder 81 is hinged on one end of the connecting arm 82, and the middle part of the connecting arm 82 is hinged on the fixed frame 10; the pressing head 83 is installed at the other end of the connecting arm 82; the pressing head 83 is used to push the tire, so that the pressing head 83 is extended between the tire and the receiving column, and the telescopic rod of the cylinder 81 is extended and retracted to drive the bending arm to rotate around the hinge point in the middle thereof. When the bending arm rotates, the pressing head 83 presses the tire upward or downward, so that the tire is close to the first circular cutter disc 20 or the second circular cutter disc 40.

[0048] 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 tire cutting device, characterized in that: The invention comprises a fixing frame, a circular cutter disc driving mechanism, and a first circular cutter disc and a second circular cutter disc respectively pivoted on the fixing frame; the blades of the first circular cutter disc and the second circular cutter disc intersect and fit each other; the circular cutter disc driving mechanism is used to respectively drive the first circular cutter disc and the second circular cutter disc to rotate, so that the first circular cutter disc and the second circular cutter disc cooperate to bite and cut the tire entering between the blades of the first circular cutter disc and the second circular cutter disc; The tire cutting device further comprises a toggle gear; the toggle gear is mounted on the second circular cutter disc and is coaxially arranged with the second circular cutter disc; when the toggle gear rotates with the second circular cutter disc, the tooth portion of the toggle gear can toggle the tire so that the tire rotates around its central axis relative to the first circular cutter disc and the second circular cutter disc; The first circular cutter disc comprises a cutter disc body, a blade disc body and a locking structure; a positioning structure is arranged between the cutter disc body and the blade disc body; the positioning structure comprises a positioning block and a positioning groove; one of the positioning block and the positioning groove is arranged on the cutter disc body, and the other is arranged on the blade disc body; the positioning groove and the positioning block are matched and inserted so that the central axes of the cutter disc body and the blade disc body coincide; the locking structure is used to fix the cutter disc body and the blade disc body in connection; the blade of the blade disc body protrudes from the cutter disc body; the circular cutter disc driving mechanism is drivingly connected to the cutter disc body; The positioning groove is arranged on the blade disc body; the positioning block is arranged on the blade seat disc body; the positioning groove is arranged coaxially with the blade disc, and the positioning block is arranged coaxially with the blade seat disc; The surface where the first circular cutter disc and the second circular cutter disc are tangent to each other forms a first cut surface; the surface where the second circular cutter disc and the first circular cutter disc are tangent to each other forms a second cut surface; the diameter of the first cut surface is greater than the diameter of the second cut surface; in a horizontal direction parallel to the first cut surface, the center of the first cut surface and the center of the second cut surface are offset from each other; The tire cutting device further comprises a pressing mechanism, which comprises a pressing head, a connecting arm and a cylinder; the pressing head is mounted at one end of the connecting arm and is used to press the tire against the first circular blade disc or the second circular blade disc; the middle portion of the connecting arm is hinged on the fixing frame; the telescopic rod of the cylinder is hinged on the connecting arm, and the cylinder body of the cylinder is hinged on the fixing frame; The tooth portion of the shift gear extends toward the rotation direction of the blade disc.

2. The tire cutting device according to claim 1, characterized in that: The circular cutter disc drive mechanism includes a first rotating motor and a gear transmission structure; the output shaft of the first rotating motor is transmission-connected to the second circular cutter disc and is used to drive the second circular cutter disc to rotate; the second circular cutter disc is transmission-connected to the first circular cutter disc through the gear transmission structure, so that when the second circular cutter disc rotates, the first circular cutter disc is linked to rotate through the gear transmission structure, and the rotation direction of the first circular cutter disc is opposite to the rotation direction of the second circular cutter disc.

3. The tire cutting device according to claim 1, characterized in that: The circular cutter disc drive mechanism includes a second rotating motor and a third rotating motor; the output shaft of the second rotating motor is drivingly connected to the first circular cutter disc; the output shaft of the third rotating motor is drivingly connected to the second circular cutter disc.

4. The tire cutting device according to claim 1, characterized in that: The blade disc body is recessed on one side away from the blade seat disc body towards the direction close to the blade seat disc body to form a receiving groove; the locking structure includes a first insertion hole provided on the blade seat disc body, a second insertion hole provided at the bottom of the receiving groove, a screw and a nut; the rod of the screw passes through the first insertion hole and the second insertion hole and is threadedly engaged with the nut; the head of the screw is located in the receiving groove, and the thickness of the head of the screw is less than or equal to the depth of the receiving groove; the positioning groove is provided at the bottom of the receiving groove.

5. The tire cutting device according to claim 1, characterized in that: The tire cutting device comprises a pressing mechanism; the pressing mechanism can be connected to the first circular cutter disc or the second circular cutter disc, so as to drive the first circular cutter disc and the second circular cutter disc to fit tightly together.

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