Cutting device for manufacturing tire tread

Abstract

The utility model relates to the field of tire manufacturing, in particular to a cutting device for tire tread manufacturing, which comprises two conveying mechanisms arranged adjacently and a positioning cutting plate connected between the two conveying mechanisms, a cutting groove is arranged at the top of the positioning cutting plate, a cutting mechanism is erected on the outer side of one conveying mechanism, and the cutting mechanism is arranged on the outer side of the other conveying mechanism. The cutting mechanism comprises symmetrically-arranged vertical frames, a frame is rotationally connected between the vertical frames, a cutting assembly is slidably connected to the frame, a driving assembly for driving the cutting assembly to move back and forth is connected to one side of the frame, and telescopic rod assemblies for driving the frame to swing are installed on one sides of the vertical frames correspondingly. Through swinging of the frame and contraction of the telescopic rod assembly, the cutting assembly can accurately enter the cutting groove and conduct slope cutting on the tire tread, the contact area of the tire tread in the assembling and attaching process is increased through slope cutting, more contact points exist between rubber materials, and therefore the bonding strength and durability are improved; the positive influence on the overall performance and the service life of the tire is achieved.

Description

Technical Field

[0001] The utility model relates to the field of tire manufacturing, in particular to a cutting device for making tire treads. Background Art

[0002] The tire tread is the part of the tire that directly contacts the ground. It is responsible for transmitting the vehicle's traction and braking force, and at the same time withstands various impacts and wear during driving. The tread is usually composed of crown rubber, base rubber and lower tread rubber. The tread serves as the outer layer of protection for the tire and can effectively prevent the internal structure of the tire from being damaged by sharp objects or harsh conditions on the road. The friction between the tread and the ground is the source of power for the vehicle's driving and is also the key to achieving braking effect.

[0003] The production steps of tire treads are generally to add the selected raw materials into an internal mixer in a certain proportion and order, mix them under high temperature, high pressure and a certain speed, then heat the mixed rubber through an extruder, and extrude a rubber strip with the cross-sectional shape and size of the tread through a specific die mold. The extruded tread rubber strip needs to be cooled to prevent its deformation. After cooling, the tread rubber strip is cut to a fixed length according to the tire specification requirements for subsequent assembly.

[0004] With respect to the above-mentioned related technologies, the inventors found that when the tire tread is cut to a fixed length, the traditional cutting device will cause the groove of the tire tread to be horizontal, that is, the cutting edge of the tread is parallel or nearly parallel to the radial direction of the tire. This cutting surface is relatively simple, and its contact surface is relatively small when the tread is assembled and bonded, resulting in loose adhesion of the tire, prone to delamination or cracking, and a decrease in performance and life. For this reason, we propose a cutting device for making a tire tread, which is used to cut the tread into an inclined surface, expand the contact surface when the tire is assembled and bonded, and reduce the probability of loose adhesion of the tire. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a cutting device for manufacturing tire treads, which is convenient for cutting the bevel of the tire tread into an inclined surface when the tire tread is cut to a fixed length, thereby expanding the contact surface when the tire is assembled and bonded, making the tire bond more firmly and improving the performance and life of the tire.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a cutting device for making tire treads, comprising: two adjacently arranged conveying mechanisms and a positioning cutting plate connected therebetween, a cutting groove being provided on the top of the positioning cutting plate, a cutting mechanism being arranged on the outer side of one of the conveying mechanisms, the cutting mechanism comprising symmetrically arranged vertical frames, a frame being rotatably connected between the vertical frames, a cutting assembly being slidably connected to the frame, a driving assembly for driving the cutting assembly to move back and forth being connected to one side of the frame, a telescopic rod assembly for driving the frame to swing being respectively installed on one side of the vertical frame, and after the telescopic rod assembly is retracted, the cutting end of the cutting assembly is located in the cutting groove;

[0007] The conveying mechanisms are respectively provided with flattening mechanisms, and the flattening mechanisms are respectively arranged close to the positioning cutting plates and are respectively located on both sides of the cutting mechanisms.

[0008] By adopting the above technical solution, the conveying mechanism conveys the cooled tread, and then extends and retracts the telescopic rod assembly to drive the cutting assembly to swing to an inclined state, and cooperates with the driving assembly to drive the cutting assembly to perform cutting movement. At this time, the tread is fixed by the flattening mechanism, and the groove of the tread is cut into an inclined state, so that the contact surface is larger during the subsequent tread assembly and bonding, thereby improving the bonding strength and durability.

[0009] In a preferred example, the utility model can be further configured as follows: the cutting assembly includes a mounting plate, a servo motor 1 is connected to the mounting plate, the output shaft of the servo motor 1 is connected to a cutting wheel, a protective shell is provided on the outer side of the cutting wheel, an L-shaped reinforcing rib is connected to the protective shell, and the L-shaped reinforcing rib is connected to the mounting plate.

[0010] By adopting the above technical solution, a servo motor drives the cutting wheel to rotate at high speed to cut the tread to a fixed length. At the same time, under the action of the protective shell, the cutting wheel is protected to improve the safety performance of the cutting assembly. At the same time, under the action of the L-shaped reinforcement ribs, the structural stability of the cutting wheel during cutting is improved.

[0011] In a preferred example, the utility model can be further configured as follows: two sliding assemblies are symmetrically connected to the frame, and the sliding assemblies include guide rails, and sliders are slidably connected to the guide rails, and the sliders are respectively connected to the cutting assemblies.

[0012] By adopting the above technical solution, the guide rail provides a stable moving trajectory for the slider, limiting the deviation and shaking of the slider during the movement, thereby ensuring the stability and accuracy of the cutting assembly during the cutting process.

[0013] In a preferred example, the utility model can be further configured as follows: the telescopic rod assembly includes an electric push rod, one end of the electric push rod is connected to a collar, and the other end is rotatably connected to a hinge seat through a pin shaft, the hinge seat is connected to the stand, a limit shaft is passed through the inner side of the collar, and the limit shaft is rotatably connected to the frame.

[0014] By adopting the above technical solution, the electric push rod can accurately control its telescopic length, thereby driving the frame to swing precisely. The limit shaft passing through the inner side of the ring is rotatably connected to the frame, providing a stable support point for the swing of the frame. This design limits the deviation and shaking of the frame during the swinging process, ensuring the stability of the cutting assembly during the cutting process. By adjusting the telescopic length of the electric push rod and the installation position of the articulated seat, the swing range and angle of the frame can be changed, which enables the entire cutting system to adapt to tire treads of different sizes, shapes and cutting angles, thereby improving the adaptability and flexibility of the system.

[0015] In a preferred example, the utility model can be further configured as follows: the driving assembly includes two mounting frames, the mounting frames are respectively connected to electric cylinders, one end of the electric cylinders is respectively connected to the cutting assembly, and the driving assembly is not in contact with the stand.

[0016] By adopting the above technical solution, since the electric cylinder is directly connected to the cutting assembly, the driving force can be transmitted to the cutting assembly more directly and efficiently, reducing the energy loss during the transmission process, which helps to improve the cutting speed and efficiency. Since the driving assembly does not contact the frame, vibration and noise caused by loose or friction of the connecting parts are avoided. This design helps to maintain stability during the cutting process and improve the cutting quality.

[0017] In a preferred example, the utility model can be further configured as follows: the flattening mechanism includes mounting seats symmetrically connected to both sides of the top of the conveying mechanism, the mounting seats are respectively connected to support rods by bolts, a counterweight pressure roller is rotatably connected between the support rods, a screw is threadedly passed through the support rod, a fixing pin is passed through the bottom end of the screw, and the bottom end of the screw is in contact with the top of the conveying mechanism.

[0018] By adopting the above technical solution, the counterweight pressing roller connected to the support rod rotates and utilizes its own weight and rotatable characteristics to stably press the tire tread. This pressing method will not damage the tread, and can ensure that the tread remains flat and does not move during the cutting process, thereby improving the cutting accuracy.

[0019] In a preferred example, the utility model can be further configured as follows: the conveying mechanism includes a working frame and a synchronous belt, the inner two ends of the working frame are respectively rotatably connected with transmission rollers, a plurality of synchronous wheels are installed at intervals on the outer circle of the transmission roller, the synchronous wheels are respectively meshed with the synchronous belts, a plurality of guide support rollers rotatably connected to the working frame are arranged between the transmission rollers, a servo motor 2 is connected to the side of the working frame away from one end of the vertical frame, the output shaft of the servo motor 2 is connected to one of the transmission rollers, and the surface of the synchronous belt is provided with anti-slip grooves.

[0020] By adopting the above technical solution, stable transmission of the synchronous belt is achieved. This design ensures the stability and continuity of the tire tread during the conveying process, and avoids cutting errors caused by slippage or deviation of the synchronous belt. The anti-skid pattern on the surface of the synchronous belt increases the friction between the synchronous belt and the tire tread, preventing the tread from slipping or dislocation during the conveying process. Especially in the cutting process, the anti-skid pattern can ensure that the tread maintains a stable position and posture, thereby improving the cutting quality and efficiency.

[0021] In summary, the utility model includes at least one of the following beneficial technical effects of the cutting device for tire tread production:

[0022] 1. Through the swing of the frame and the contraction of the telescopic rod assembly, the cutting assembly can accurately enter the cutting groove and perform bevel cutting on the tire tread. The bevel cutting increases the contact area of ​​the tread during assembly and bonding, making more contact points between the rubber materials, thereby improving the bonding strength and durability, which has a positive impact on the overall performance and service life of the tire.

[0023] 2. The counterweight pressing roller connected by the support rod can stably press the tire tread by its own weight and rotatable characteristics. This pressing method will not damage the tread and can ensure that the tread remains flat and does not move during the cutting process, thereby improving the cutting accuracy. The screw threaded on the support rod can change the resistance between the bottom end of the screw and the top of the conveying mechanism by adjusting its screw-in depth, thereby adjusting the pressing force of the counterweight pressing roller on the tread. This design enables the flattening mechanism to adapt to tire treads of different thicknesses and materials, ensuring the appropriate pressing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which:

[0025] Figure 1It is a schematic structural diagram of the present utility model;

[0026] Figure 2 It is an exploded view of the cutting mechanism of the present utility model;

[0027] Figure 3 It is a schematic structural diagram of the cutting assembly of the present utility model;

[0028] Figure 4 It is a schematic structural diagram of the flattening mechanism of the present utility model;

[0029] Figure 5 It is a schematic structural diagram of the conveying mechanism of the present utility model.

[0030] In the figure: 10, conveying mechanism; 2, positioning cutting plate; 3, cutting groove; 40, cutting mechanism; 50, flattening mechanism;

[0031] 11, working frame; 12, synchronous belt; 13, transmission roller; 14, synchronous pulley; 15, guiding support roller; 16, servo motor II;

[0032] 41, vertical frame; 42, frame; 43, cutting assembly; 44, driving assembly; 45, telescopic rod assembly; 46, sliding assembly;

[0033] 51, mounting seat; 52, support rod; 53, counterweight pressing roller; 54, screw; 55, fixing pin;

[0034] 431, mounting plate; 432, servo motor I; 433, cutting wheel; 434, protective housing; 435, L-shaped reinforcing rib;

[0035] 441, mounting frame; 442, electric cylinder;

[0036] 451, electric push rod; 452, collar; 453, hinge seat; 454, limiting shaft;

[0037] 461, guide rail; 462, slider. Detailed implementation manners

[0038] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not intended to limit the present utility model.

[0039] It should be noted that these drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present utility model in a schematic manner. Therefore, they only show the components related to the present utility model.

[0040] Refer to Figures 1-5, a cutting device for manufacturing a tire tread disclosed by the present utility model, comprising: two adjacent conveying mechanisms 10 and a positioning cutting plate 2 connected therebetween. A cutting groove 3 is formed at the top of the positioning cutting plate 2. A cutting mechanism 40 is mounted outside one of the conveying mechanisms 10. The cutting mechanism 40 includes symmetrically arranged vertical frames 41. A frame 42 is rotatably connected between the vertical frames 41. A cutting assembly 43 is slidably connected to the frame 42. Two sliding assemblies 46 are symmetrically connected to the frame 42. Each sliding assembly 46 includes a guide rail 461. Sliders 462 are respectively slidably connected to the guide rails 461. The sliders 462 are respectively connected to the cutting assembly 43. One side of the frame 42 is connected with a driving assembly 44 for driving the cutting assembly 43 to move back and forth. The driving assembly 44 includes two mounting brackets 441. Electric cylinders 442 are respectively connected to the mounting brackets 441. One ends of the electric cylinders 442 are respectively connected to the cutting assembly 43. The driving assembly 44 does not contact the vertical frames 41. One side of each vertical frame 41 is respectively provided with a telescopic rod assembly 45 for driving the frame 42 to swing. After the telescopic rod assembly 45 contracts, the cutting end of the cutting assembly 43 is located in the cutting groove 3. The telescopic rod assembly 45 includes an electric push rod 451. One end of the electric push rod 451 is connected with a collar 452. The other end is rotatably connected to a hinge seat 453 through a pin shaft. The hinge seat 453 is connected to the vertical frame 41. A limiting shaft 454 is inserted through the inner side of the collar 452. The limiting shaft 454 is rotatably connected to the frame 42. Flattening mechanisms 50 are respectively mounted on the conveying mechanisms 10. The flattening mechanisms 50 are respectively arranged close to the positioning cutting plate 2 and are respectively located on both sides of the cutting mechanism 40; the electric push rod 451 expands and contracts to drive the frame 42 to swing precisely, introduce its cutting end into the cutting groove 3, and cooperate with the driving assembly 44 to drive the frame 42 to move. And under the cooperation of the guide rail 461 and the slider 462, the cutting assembly 43 smoothly moves back and forth in the cutting groove 3, ensuring the accuracy of the cutting position, and performing bevel cutting on the tire tread. Bevel cutting increases the contact area during the assembly and fitting of the tread, making the contact points between the rubber materials more, thereby improving the bonding strength and durability. In addition, bevel cutting is beneficial to the natural flow and penetration of the rubber material, making the bonding more uniform and firm, and improving the overall quality and performance of the tire, reducing the occurrence of problems such as air leakage, delamination or cracking.

[0041] The cutting assembly 43 includes a mounting plate 431, on which a first servo motor 432 is connected. The output shaft of the first servo motor 432 is connected to a cutting wheel 433. A protective housing 434 is provided outside the cutting wheel 433. An L-shaped reinforcing rib 435 is connected to the protective housing 434, and the L-shaped reinforcing rib 435 is connected to the mounting plate 431. The protective housing 434 provided outside the cutting wheel 433 can prevent the flying objects generated during the cutting process from hurting people, and at the same time can also protect the cutting wheel 433 from the interference and damage of the external environment. This design improves the safety of the cutting operation and reduces the accident risk. At the same time, the L-shaped reinforcing rib 435 connected to the protective housing 434 is connected to the mounting plate 431. During the cutting process, the cutting wheel 433 will receive a large reaction force and vibration. The L-shaped reinforcing rib 435 can effectively disperse and absorb these forces, reduce the deformation and damage of the cutting assembly 43, and thus extend its service life.

[0042] The flattening mechanism 50 includes mounting seats 51 symmetrically connected to both sides of the top of the conveying mechanism 10. The mounting seats 51 are respectively connected with support rods 52 through bolts. A counterweight pressing roller 53 is rotatably connected between the support rods 52. A screw rod 54 is threaded through the support rods 52. A fixing pin 55 is provided at the bottom end of the screw rod 54. The bottom end of the screw rod 54 is in contact connection with the top of the conveying mechanism 10. The counterweight pressing roller 53 rotatably connected through the support rods 52 uses its own weight and rotatable characteristics to stably press the tire tread. This pressing method will neither damage the tread nor ensure that the tread remains flat and immobile during the cutting process, thus improving the cutting accuracy. And a screw rod 54 is threaded through the support rods 52. By adjusting the screwing depth, the contact force between the bottom end of the screw rod 54 and both sides of the top of the conveying mechanism 10 can be changed, and then the pressing force of the counterweight pressing roller 53 on the tread can be adjusted.

[0043] The conveying mechanism 10 includes a working frame 11 and a synchronous belt 12. Transmission rollers 13 are respectively rotatably connected to both ends of the inner side of the working frame 11. A number of synchronous wheels 14 are spacedly installed on the outer circumference of the transmission rollers 13. The synchronous wheels 14 are respectively meshed with the synchronous belt 12. A number of guiding support rollers 15 rotatably connected to the working frame 11 are spaced between the transmission rollers 13. A second servo motor 16 is connected to the side of the working frame 11 away from the vertical frame 41. The output shaft of the second servo motor 16 is connected to one of the transmission rollers 13. Anti-slip lines are provided on the surface of the synchronous belt 12. Through the transmission rollers 13 rotatably connected to both ends of the inner side of the working frame 11 and the cooperation of the synchronous wheels 14 meshed with the synchronous belt 12, the stable transmission of the synchronous belt 12 is realized. And anti-slip lines are provided on the surface of the synchronous belt 12, which can increase the friction force between the synchronous belt 12 and the tire tread, prevent the tread from slipping or misaligning during the conveying process. Especially during the cutting process, the anti-slip lines can ensure that the tread maintains a stable position and posture, thus improving the cutting quality and efficiency.

[0044] The implementation principle of this embodiment is as follows: when in use, the tire tread to be cut is transported by the synchronous belt 12, moves forward with the movement of the synchronous belt 12 and stops moving when it is transported to the required length, so that the tread is compacted by the counterweight pressing roller 53 of the flattening mechanism 50, and then the electric push rod 451 contracts and drives the frame 42 to swing to the corresponding position, so that its cutting wheel 433 accurately enters the cutting groove 3. At this time, the electric cylinder 442 telescopes and drives the cutting assembly 43 to move, and cooperates with the guide rail 461 and the slider 462 to ensure the stable movement of the mounting plate 431, while ensuring the stability and accuracy of the cutting assembly 43 during the cutting process, so that the cutting wheel 433 accurately cuts the tread in the cutting groove 3, and stops rotating after the cutting is completed, and the electric push rod 451 extends to make the cutting wheel 433 disengage from the cutting groove 3, and the tread continues to be transported and moved by the synchronous belt 12, and the tread cut to a fixed length is saved for use in subsequent assembly and bonding.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A cutting device for making a tire tread, comprising: Two adjacent conveying mechanisms (10) and a positioning cutting plate (2) connected therebetween, wherein a cutting groove (3) is provided on the top of the positioning cutting plate (2), characterized in that a cutting mechanism (40) is arranged on the outer side of one of the conveying mechanisms (10), wherein the cutting mechanism (40) comprises symmetrically arranged vertical frames (41), wherein a frame (42) is rotatably connected between the vertical frames (41), wherein a cutting assembly (43) is slidably connected to the frame (42), wherein a driving assembly (44) for driving the cutting assembly (43) to move back and forth is connected to one side of the frame (42), wherein a telescopic rod assembly (45) for driving the frame (42) to swing is respectively installed on one side of the vertical frame (41), wherein after the telescopic rod assembly (45) is retracted, the cutting end of the cutting assembly (43) is located in the cutting groove (3); The conveying mechanisms (10) are respectively provided with flattening mechanisms (50), and the flattening mechanisms (50) are respectively arranged close to the positioning cutting plates (2) and are respectively located on both sides of the cutting mechanism (40).

2. A tire tread cutting device according to claim 1, characterized in that: The cutting assembly (43) comprises a mounting plate (431), the mounting plate (431) is connected to a servo motor 1 (432), the output shaft of the servo motor 1 (432) is connected to a cutting wheel (433), a protective shell (434) is provided on the outer side of the cutting wheel (433), the protective shell (434) is connected to an L-shaped reinforcing rib (435), and the L-shaped reinforcing rib (435) is connected to the mounting plate (431).

3. A tire tread cutting device according to claim 1, characterized in that: Two sliding assemblies (46) are symmetrically connected to the frame (42), and the sliding assemblies (46) include guide rails (461). Slide blocks (462) are respectively slidably connected to the guide rails (461), and the slide blocks (462) are respectively connected to the cutting assemblies (43).

4. A cutting device for tire tread production according to claim 1, characterized in that: The telescopic rod assembly (45) comprises an electric push rod (451), one end of which is connected to a collar (452), and the other end of which is rotatably connected to a hinge seat (453) via a pin shaft, the hinge seat (453) being connected to the stand (41), a limit shaft (454) being passed through the inner side of the collar (452), and the limit shaft (454) being rotatably connected to the frame (42).

5. A cutting device for making tire tread according to claim 1 or 3, characterized in that: The driving assembly (44) comprises two mounting frames (441), the mounting frames (441) are respectively connected to electric cylinders (442), one end of each electric cylinder (442) is respectively connected to a cutting assembly (43), and the driving assembly (44) is not in contact with the stand (41).

6. A cutting device for tire tread production according to claim 1, characterized in that: The flattening mechanism (50) comprises mounting seats (51) symmetrically connected to both sides of the top of the conveying mechanism (10); the mounting seats (51) are respectively connected to support rods (52) by bolts; a counterweight pressing roller (53) is rotatably connected between the support rods (52); a screw rod (54) is threadedly passed through the support rod (52); a fixing pin (55) is passed through the bottom end of the screw rod (54); and the bottom end of the screw rod (54) is abutted against the top of the conveying mechanism (10).

7. A tire tread cutting device according to claim 1, characterized in that: The conveying mechanism (10) comprises a working frame (11) and a synchronous belt (12); the inner two ends of the working frame (11) are rotatably connected with transmission rollers (13); a plurality of synchronous wheels (14) are installed at intervals on the outer circle of the transmission roller (13); the synchronous wheels (14) are respectively meshed and connected with the synchronous belt (12); a plurality of guide support rollers (15) rotatably connected with the working frame (11) are arranged at intervals between the transmission rollers (13); a servo motor 2 (16) is connected to the side of the working frame (11) away from the stand (41); the output shaft of the servo motor 2 (16) is connected to one of the transmission rollers (13); and the surface of the synchronous belt (12) is provided with anti-slip grooves.

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