Burr removing equipment for tire production

Abstract

The utility model discloses burr removing equipment for tire production, which relates to the technical field of tire processing and comprises a support and a trimming knife mounted on the support and used for trimming tire burrs and further comprises a driving component and a rotating component arranged on one side, far away from a tire, of the trimming knife. The rotating assembly comprises a center shaft and a plurality of strip shifting units arranged on the peripheral side of the center shaft, the strip shifting units and the V-shaped knife edges of the trimming knife are arranged in a one-to-one correspondence mode, and the center shaft is rotationally connected to the support and is parallel to the axial direction of the tire; and the driving assembly is used for driving the central shaft to rotate so as to drive each poking strip unit to poke the tire hair of the tire to the corresponding V-shaped knife edge. The driving assembly drives the rotating assembly to rotate near the V-shaped knife edge of the trimming knife, and the poking strip units of the rotating assembly can promote the fitting degree of the tire hair passing through the V-shaped knife edge and the V-shaped knife edge, so that the tire hair is promoted to be sheared off by the trimming knife at the same root, the problem of missing shearing of the tire hair is effectively relieved and even completely eradicated, and the appearance attractiveness of the tire is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire processing, in particular to a device for removing burrs during tire production. Background Art

[0002] Tires will have burrs after they are formed, mainly the tire hair distributed on the tire surface. The tire hair is the thin strips formed after the high-temperature and high-pressure rubber flows into the mold exhaust holes during the tire vulcanization and solidifies after cooling. It does not affect the performance of the tire during driving. However, in order to meet the domestic suppliers' demand for beautiful tire appearance, the tire hair on the surface needs to be removed before storage.

[0003] Currently, tire hair is mainly trimmed by special trimming knives. The trimming knives are provided with a row of V-shaped blades that fit the tire surface. The tire is rotated so that the tire hair is cut by the V-shaped blades.

[0004] The shortcomings of the existing technology are that due to the softness of the tire hair and the fatigue and bluntness of the trimming knife, a small amount of tire hair is not cut off after passing through the V-shaped blade or is not cut off at the root, resulting in stubble, which affects the appearance of the tire. Utility Model Content

[0005] The purpose of the utility model is to provide a tire production burr removal device to solve the problem in the above-mentioned prior art that a small amount of tire hair is not cut off or is not cut off at the root after passing through the V-shaped blade, resulting in stubble, which affects the appearance of the tire.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tire production burr removal device, comprising a bracket and a trimming knife installed on the bracket for trimming tire hair, and also comprising a driving assembly and a rotating assembly arranged on the side of the trimming knife away from the tire, the rotating assembly comprising a central axis and a plurality of strip units arranged on the circumferential side of the central axis, each strip unit being arranged in one-to-one correspondence with each V-shaped blade of the trimming knife, the central axis being rotatably connected to the bracket and parallel to the axial direction of the tire, the driving assembly being used to drive the central axis to rotate to drive each strip unit to move the tire hair toward the corresponding V-shaped blade.

[0007] Furthermore, each shift bar unit includes a plurality of shift bars distributed in a ring array.

[0008] Furthermore, each shift bar unit also includes a collar sleeved on the central shaft, each shift bar is fixedly connected to the collar, and the collar and the central shaft are fixedly connected by screws.

[0009] Furthermore, one end of the shift bar away from the central axis has a rod-shaped shift head parallel to the central axis.

[0010] Furthermore, a rubber sleeve is provided on the dial head.

[0011] Furthermore, the rotational speed of the shifting head is 5%-10% greater than the rotational speed of the tire table.

[0012] Furthermore, the driving assembly includes a swing arm, a roller and an elastic member. One end of the swing arm is rotatably connected to the bracket, and the other end is rotatably connected to the roller. The elastic force of the elastic member acts on the swing arm to make the roller rest against the circumferential surface of the tire. The roller rotates with the tire and drives the rotating assembly to rotate through the transmission assembly.

[0013] Furthermore, the transmission assembly includes a first single-groove pulley coaxially fixedly connected to the roller, a second single-groove pulley coaxially fixedly connected to the center axis, and a double-groove pulley rotatably arranged on a rotating shaft between the swing arm and the bracket, the first single-groove pulley and the double-groove pulley are connected by a first belt transmission, and the second single-groove pulley and the double-groove pulley are connected by a second belt transmission.

[0014] Furthermore, the elastic member includes a torsion spring sleeved on the rotating shaft between the swing arm and the bracket, one end of the torsion spring is fixedly connected to the swing arm, and the other end is fixedly connected to the bracket.

[0015] Furthermore, the pruning knife and the bracket are connected together through a screw rod and a set of nuts. A mounting rod is axially sleeved on the screw rod, and the mounting rod is locked on the screw rod through another set of nuts.

[0016] Compared to existing technologies, the present invention provides a tire burr removal device. A driving assembly drives a rotating assembly to rotate near the V-shaped blade of a trimmer. Each of the rotating assembly's shifting bar units promotes the alignment of tire hair passing through the V-shaped blade with the blade, thereby ensuring that the tire hair is cut cleanly by the trimmer. This effectively alleviates or even eliminates the problem of missed tire hair cuts and improves the tire's aesthetic appearance. Furthermore, the shifting bar units can clean any accumulated tire hair within the trimmer's blade groove in real time, preventing the accumulated hair from obstructing the entry of the tire hair to be cut into the V-shaped blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, a brief introduction to the drawings required for use in the embodiments is given below.

[0018] Figure 1 A schematic diagram of the structure of the embodiment when in use;

[0019] Figure 2 Provided for the embodiment Figure 1 A magnified view of the structure at point A;

[0020] Figure 3 A front view of the structure when in use provided for the embodiment;

[0021] Figure 4 Provided for the embodiment Figure 3 A magnified view of the structure at point B in FIG;

[0022] Figure 5 A schematic diagram of the overall structure provided for the embodiment;

[0023] Figure 6 A schematic diagram of the overall structure from another perspective provided by the embodiment;

[0024] Figure 7 An exploded view of the structure provided for the embodiment;

[0025] Figure 8 This is a structural diagram of the shifter unit provided in the embodiment.

[0026] Description of reference numerals:

[0027] 1. Bracket; 2. Mounting rod; 3. Screw; 4. Trimming knife; 5. Rotating assembly; 51. Center shaft; 52. Collar; 53. Dial bar; 54. Dial head; 6. Driving assembly; 61. Swing arm; 62. Torsion spring; 63. Roller; 64. First single-groove pulley; 65. Second single-groove pulley; 66. Double-groove pulley; 67. First belt; 68. Second belt. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] See also Figure 1-8 , an embodiment of the present invention provides a tire production burr removal device, comprising a bracket 1, a mounting rod 2, a trimming knife 4, a rotating assembly 5 and a driving assembly 6, wherein the mounting rod 2 is connected to an external fixed base, the bracket 1 is connected to the mounting rod 2, the trimming knife 4, the rotating assembly 5 and the driving assembly 6 are all mounted on the bracket 1, the rotating assembly 5 is integrally rotatably connected to the bracket 1, and is arranged on the side of the trimming knife 4 away from the tire and near the V-shaped blade of the trimming knife 4. The rotating assembly 5 includes a central shaft 51 rotatably connected to the bracket 1, the axial direction of the central shaft 51 is parallel to the axial direction of the tire, and a plurality of strip units are axially arranged side by side on the central shaft 51, and each strip unit corresponds one-to-one to each V-shaped blade of the trimming knife 4 in terms of number and position. As Figure 8Each strip unit includes multiple strips 53 arranged in a circular array. The end of the strip 53, away from the central axis 51, has a stripping head 54. The stripping head 54 is rod-shaped and parallel to the central axis 51. The surface of the stripping head 54 should be made of a material with a high coefficient of friction, such as a rubber sleeve or a frosted coating. This increases friction with the tire hair, thereby effectively moving the hair. The trimming blade 4 is placed close to the tire surface to trim the tire hair. The drive assembly 6 is used to drive the central axis 51 to rotate, driving the stripping head 54 of each strip unit to move the tire hair toward the corresponding V-shaped blade edge.

[0030] In the above technical solution, the driving assembly 6 drives the rotating assembly 5 to rotate near the V-shaped blade of the trimming blade 4. The shifting bar units of the rotating assembly 5 can promote the alignment of the tire hair passing through the V-shaped blade with the V-shaped blade through the shifting head 54, thereby promoting the neat severing of the tire hair by the trimming blade 4, effectively alleviating or even eliminating the problem of missed trimming of tire hair and improving the appearance of the tire. In addition, the shifting bar units can also clean the trimming blade 4 in real time to prevent the accumulated tire hair from blocking the tire hair to be cut from entering the V-shaped blade.

[0031] Regarding the specific installation method of each shift bar unit and the central shaft 51, the shift bar unit also includes a ring 52 for being sleeved on the central shaft 51, and each shift bar 53 is welded, bonded or screwed to the circumference of the ring 52, and the ring 52 and the central shaft 51 are fixed by screws.

[0032] As a preferred technical solution, the specific structure of the drive assembly 6 includes a swing arm 61, a roller 63, and a transmission assembly. One end of the swing arm 61 is rotatably connected to the bracket 1, and the roller 63 is rotatably connected to the other end of the swing arm 61. A torsion spring 62 is mounted on the rotating shaft between the swing arm 61 and the bracket 1. One end of the torsion spring 62 is fixedly connected to the swing arm 61, and the other end is fixedly connected to the bracket 1. Of course, the torsion spring 62 can be replaced by other existing elastic members. The elastic force of the elastic member is required to act on the swing arm 61 to force the roller 63 to abut against the circumference of the tire, causing the roller 63 to rotate with the tire. The roller 63 then drives the rotating assembly 5 to rotate through the transmission assembly. This allows the rotational power of the tire to be used to operate the rotating assembly 5. The provision of the torsion spring 62 also ensures that the roller 63 always abuts against the tire surface, effectively preventing the roller 63 from slipping, and also enables the roller 63 to automatically adapt to tires of different diameters.

[0033] The transmission assembly specifically includes a first single-groove pulley 64, a second single-groove pulley 65, a double-groove pulley 66, a first belt 67, and a second belt 68. The first single-groove pulley 64 is coaxially fixedly connected to the roller 63, the second single-groove pulley 65 is coaxially fixedly connected to the central shaft 51, and the double-groove pulley 66 is rotatably disposed on a rotating shaft between the swing arm 61 and the bracket 1. The first single-groove pulley 64 and the double-groove pulley 66 are connected by a first belt 67, and the second single-groove pulley 65 and the double-groove pulley 66 are connected by a second belt 68. The power transmission path is as follows: the rotating tire drives the roller 63 to rotate, the roller 63 drives the first single-groove pulley 64 to rotate, the first single-groove pulley 64 drives the double-groove pulley 66 to rotate via the first belt 67, the double-groove pulley 66 drives the second single-groove pulley 65 to rotate via the second belt 68, and the second single-groove pulley 65 drives the rotating assembly 5 to rotate. The direction of rotation of the rotating assembly 5 is exactly opposite to that of the tire. Furthermore, while the transmission ratio of the transmission assembly remains unchanged, the diameter of the virtual circle in which each of the shifting heads 54 of the shifting bar unit of the rotating assembly 5 is located should be greater than the diameter of the roller 63, so that the shifting heads 54 have a greater linear velocity than the tire. Preferably, the linear velocity of the shifting heads 54 is 5%-10% greater than the linear velocity of the tire surface. This allows the outer ends of the tire hair to pass over the V-shaped blade before the roots, facilitating severing of the tire hair at the roots. Furthermore, even if the tire diameter changes, the rotating assembly 5, driven by the drive assembly 6 of this embodiment, can automatically adapt to the linear velocity of the tire, maintaining the linear velocity of the shifting heads 54 slightly greater than the linear velocity of the tire surface.

[0034] Of course, the driving assembly 6 can also use a driving motor to directly drive the rotating assembly 5 to rotate. Although the cost is relatively high and the speed needs to be adjusted when facing tires of different diameters, it can also play the role of driving the rotating assembly 5 to rotate and also falls within the scope of protection of the present utility model.

[0035] The trimming knife 4 and the bracket 1 are fixed together by two sets of bolts. The screw rod 3 of one of the bolts is longer and a groove is provided in the axial direction on the circumference of the screw rod 3. A through hole is opened and closed on the mounting rod 2, and a convex portion is provided on the inner wall of the through hole. The mounting rod 2 is sleeved on the screw rod 3 through the through hole and the convex portion is located in the groove, so that the mounting rod 2 can move axially along the screw rod 3 but cannot rotate circumferentially along the screw rod 3. The mounting rod 2 and the screw rod 3 can be locked by another set of nuts, and the distance between the trimming knife 4 and the tire table surface can be adjusted to adapt to the removal of tire hair of tires with different diameters.

[0036] The above description of certain exemplary embodiments of the present invention should not be construed as limiting the scope of protection of the claims of the present invention. For those skilled in the art, the described embodiments may be modified in other different ways without departing from the spirit and scope of the present invention.

Claims

1. A tire production burr removal device, comprising a bracket and a trimming knife mounted on the bracket for trimming tire hair, characterized in that: The pruning knife further comprises a driving assembly and a rotating assembly arranged on the side of the pruning knife away from the tire. The rotating assembly comprises a central shaft and a plurality of strip units arranged on the circumferential side of the central shaft. Each strip unit is arranged in one-to-one correspondence with each V-shaped blade of the pruning knife. The central shaft is rotatably connected to the bracket and is parallel to the axial direction of the tire. The driving assembly is used to drive the central shaft to rotate to drive each strip unit to push the tire hair toward the corresponding V-shaped blade.

2. The tire production burr removal equipment according to claim 1, characterized in that: Each of the strip units includes a plurality of strips distributed in a ring array.

3. The tire production burr removal equipment according to claim 2, characterized in that: Each shift bar unit further comprises a collar sleeved on the central shaft, each shift bar is fixedly connected to the collar, and the collar and the central shaft are fixedly connected via screws.

4. The tire production burr removal equipment according to claim 2, characterized in that: One end of the shift bar away from the central axis is provided with a rod-shaped shift head parallel to the central axis.

5. The tire production burr removal device according to claim 4, characterized in that: The dial head is covered with a rubber sleeve.

6. The tire production burr removal device according to claim 4, characterized in that: The rotational speed of the dial head is 5%-10% greater than the rotational speed of the tire table.

7. The tire production burr removal device according to claim 1, characterized in that: The driving assembly includes a swing arm, a roller and an elastic member. One end of the swing arm is rotatably connected to the bracket, and the other end is rotatably connected to the roller. The elastic force of the elastic member acts on the swing arm to make the roller rest against the circumferential surface of the tire. The roller rotates with the tire and drives the rotating assembly to rotate through the transmission assembly.

8. The tire production burr removal device according to claim 7, characterized in that: The transmission assembly includes a first single-groove pulley coaxially fixedly connected to the roller, a second single-groove pulley coaxially fixedly connected to the central axis, and a double-groove pulley rotatably arranged on a rotating shaft between the swing arm and the bracket. The first single-groove pulley and the double-groove pulley are connected by a first belt transmission, and the second single-groove pulley and the double-groove pulley are connected by a second belt transmission.

9. The tire production burr removal device according to claim 7, characterized in that: The elastic member includes a torsion spring sleeved on a rotating shaft between the swing arm and the bracket, one end of the torsion spring is fixedly connected to the swing arm, and the other end is fixedly connected to the bracket.

10. The tire production burr removal device according to claim 1, characterized in that: The pruning knife and the bracket are connected together through a screw rod and a set of nuts. A mounting rod is axially sleeved on the screw rod, and the mounting rod is locked on the screw rod through another set of nuts.

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