JP4495680B2 - Automobile tire surface polishing equipment - Google Patents

Abstract

This invention presents a tire surface polishing device capable of a polishing with eye observations of a polishing position and polishing amount, and capable of an adequate polishing even for a tire having a complicated surface configuration. As shown in Fig.2 , the device comprises a tire rotation means 10 rotating a polishing belt means 20 polishing a grounding surface of the tire, a belt driving means 30, a belt touch-and-detaching means 40 touching the polishing belt to the tire and detaching the polishing belt from the tire. The polishing belt means 20 turns at a corner of the tire, thereby enabling a polishing of the corner. The polishing belt means 20 has an endless polishing belt. The belt driving means 30 is joined to a base 44 plunging the polishing belt toward the tire surface, in a state rotatable to a horizontal direction. Links 41,42 driving the base 44 is operated by a handle 51. The handle 51 and the polishing belt means 20 are moved to a same direction.

Description

  The present invention relates to an automobile tire surface polishing apparatus, and more particularly to a polishing apparatus capable of polishing while visually observing a polishing position and a polishing amount.

  Auto tires, especially winter studless tires, can be used because their grip performance is reduced on frozen road surfaces due to deterioration or deformation of the rubber surface of the contact surface even though the tread surface height remains high. In many cases, it is discarded.

The inventor of the present application has developed a tire outer periphery polishing apparatus for recovering the grip force reduced by polishing the tire surface, and proposed the invention described in Patent Document 1.
JP 2005-186195 A

  In the invention described in Patent Document 1, referring to FIG. 1 of the publication, the polishing apparatus includes an abrasive belt means 10, a tire receiving member 20, and a tire holding member 30, and the abrasive belt means 10 is a sanding belt. 11 is applied to the belt drive pulley 12 and the tail pulley 13 in an endless manner, and is rotationally driven endlessly by the belt drive pulley 12, and the tire receiving member 30 is soft or provided directly under the upper surface side of the sanding belt 11. It is formed of a hard roller or a plate material, and the tire holding means 30 has a tire drive motor 32 that can be moved up and down, and a tire 40 is detachably attached to a tire rotation shaft of the tire drive motor 32. The type of receiving member 20, the rotational speed of the sanding belt 11 and the tire, and the sanding belt 11 It is characterized in that the polishing by selecting a pressing force for pressing the ear the purpose of polishing the work.

  The invention described in Patent Document 1 has an advantage that the grounding surface (tread) of the tire can be efficiently polished at one time because the sanding belt for polishing the tire surface is formed larger than the width of the tire surface. However, it is difficult to polish the uneven wear part that causes wear only at the center of the cross section of the tire and, on the contrary, wear on both sides of the tire cross section or wear on only one side of the tire cross section. It was a little unsuitable for polishing.

  The present invention relates to a polishing apparatus for polishing a tire surface, which can be polished while visually observing the polishing position and the polishing amount, and can perform appropriate polishing even with a complicated tire surface shape. Is to provide.

The first of the solving means is a tire rotating means for rotating the tire, an abrasive belt means for polishing the surface of the tire, a belt driving means for rotationally driving the abrasive belt means, and the abrasive belt means being separated from the tire. A belt separating / contacting means for contacting, and a polishing belt swinging means for allowing the swinging motion by turning the polishing belt means at a corner of the tire, wherein the polishing belt means is formed in an endless belt, and the rotating shaft of the tire The belt driving means has a belt support frame for rotatably supporting the polishing belt, and the belt attaching / detaching means is in a horizontal direction with respect to the belt support frame. A base substrate coupled so as to be freely rotatable; the base substrate is provided so as to be movable in a horizontal direction with respect to the tire polishing surface; and the polishing belt swinging means includes a neck of the belt support frame. A swing angle restricting means for restricting a tilt angle, a link is pivotally attached to the base substrate, a handle mechanism and a cylinder mechanism are provided on the link, and the base substrate is moved in the tire width direction by the operation of the handle mechanism. The base substrate is moved back and forth toward the grinding surface of the tire by operating the cylinder mechanism.

The second of the solving means is the first of the solving means, wherein the belt separating / connecting means has a base substrate connected to the belt support frame and first to third links, and a base end portion of the first link is The free ends of the second and third links are pivotally attached to the base substrate while being pivotally attached to the polishing apparatus and having free ends formed in parallelograms with respect to the second and third links. A handle mechanism is provided on the first link, and a cylinder mechanism is provided on one of the second and third links. The handle mechanism is operated to place the base substrate at the corner of the tire. It is characterized by having a swing motion .

According to a third aspect of the solution means, in the first of the solution means, the handle mechanism has a handle pivotally attached to the polishing apparatus, and is polished at a free end of a lever rod provided on a shaft portion of the handle. An L-shaped lever rod that is axially attached to another position of the apparatus is axially attached via an intermediate link, and the L-shaped lever rod and the first link are axially attached by an auxiliary link, whereby the handle and the first lever are attached. The link is made to be rotatable in the same direction .

According to a fourth solution, in the first solution, the polishing belt swinging means comprises an arc-shaped hole provided in the base substrate and a cam follower provided in the belt support frame, and the cam follower is engaged with the arc-shaped hole. In combination, both are combined .

A fifth solution means is the first solution means in which the swing angle regulating means of the polishing belt swinging means engages the cam follower of the belt support frame with an arc-shaped hole provided in the base substrate, The cam follower is clamped by a clamp link pivotally attached to the base substrate, and the free ends of the clamp link are biased in a direction approaching each other .

According to the first aspect of the present invention, a polishing belt that rotates at a high speed is pressed against the tire surface, and the polishing belt is polished while being moved in the tire width direction. In addition to summer tires, there are things that can restore proper roughness and improve grip strength. Since the belt support frame provided with the polishing belt and the base substrate capable of moving back and forth toward the tire are connected, the belt driving means for rotating the polishing belt is the belt. Since the shaft that connects the belt support frame and the base substrate is oriented vertically, the weight imbalance is canceled and the belt support frame is connected. The enables freely rotate around, thereby polishing the tire corners is easily effect.

Since the second link and the third link are formed in a parallelogram, one end is pivotally attached to the first link and the other end is pivotally attached to the base substrate. Since the direction of the surface facing the tire does not change and the direction of the belt support frame coupled to the base substrate does not change, the polishing surface of the polishing belt is There is an effect of being able to contact the tire without changing.

According to the third aspect of the present invention, since the handle provided in the handle mechanism provided in the first link that rotates the base substrate is connected to the first link through the intermediate link and the auxiliary link, the handle and the first link The link can be rotated in the same direction, and the polishing operation is facilitated.

According to a fourth aspect of the present invention, the polishing belt swinging means combines an arc-shaped hole provided in the base substrate and a cam follower provided in the belt support frame, and can regulate the swing angle of the belt support frame. Therefore, there is an effect that the belt driving means can be prevented from coming into contact with other members of the polishing apparatus when the polishing belt means turns at the tire corner.

According to the fifth aspect of the present invention, the cam follower engaged with the arc-shaped hole of the base substrate is sandwiched by the sandwiching links urged in the directions in which the free ends approach each other. When the frame is returned to the tire contact surface, the belt support frame can be immediately brought into direct contact with the tire contact surface.

  1 shows an embodiment of the present invention, FIG. 1 is a longitudinal sectional view showing the entire tire surface polishing apparatus, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a perspective view showing a polishing belt and belt driving means. 4 is a longitudinal sectional view of FIG. 3, and FIG. 5 is a bottom view showing the polishing belt swinging means.

  In these drawings, the tire polishing apparatus includes a tire rotating means 10 that rotates the rotating shaft of the tire 1 toward a horizontal state, and a polishing belt means 20 that polishes the tire polishing surface 2 that serves as a ground contact surface (tread) of the tire. The belt driving means 30 for driving the polishing belt means 20, the belt separating means 40 for bringing the polishing belt means 20 into and out of contact with the tire polishing surface 2 toward the tire, and the polishing belt of the polishing belt means 20 are tires And a polishing belt swinging means 60 that enables the polishing belt means 20 to swing around the corners of the belt.

  The tire rotating means 10 is configured to rotate the tire 1 with the rotation axis of the tire in a horizontal state, and is incorporated in a gantry 11 having casters. The gantry 11 is provided with a bearing box 12, and a tire support shaft 13 having one end protruding from the bearing box 12 in a horizontal state in the bearing box 12 is rotatably mounted, and the tire support shaft Reference numeral 13 denotes a tire rotation motor 14 provided in the bearing housing 12 and a belt or chain 15 connected to be driven to rotate. When the tire 1 is mounted on the tire support shaft 13 protruding from the bearing housing 12, the tire is fixed by a tire attaching / detaching structure (not shown) so that the tire does not fall off from the tire support shaft 13 during polishing.

  The polishing belt means 20 has a polishing belt 21 formed of an endless belt, which is hung between a driving pulley 22 and a driven pulley 23, and provided with a belt pressing roller 24 at an intermediate portion thereof. The drive pulley 22, the driven pulley 23, and the pressing roller 24 have rotation axes parallel to the rotation axis of the tire to be polished, and the polishing width is approximately one half of the tire width. The drive pulley 22 is pivotally attached to the belt support frame 31, and the driven pulley 23 is connected to a cylinder device 25 by air pressure provided on the belt support frame 31 at the rotating shaft mounting portion. Thus, the tension applied to the polishing belt 21 is adjusted by changing the distance between the shafts of the driving pulley 22 and the driven pulley 23. The belt pressing roller 24 is provided on the belt support frame 31 and incorporates an urging means for applying a force protruding from the back side of the polishing belt 21 toward the front side.

  In the polishing operation, the belt pressing roller 24 is selectively used. Since the tire has many cross-sectional shapes depending on the type, for example, when the cross-section of the tire to be polished has a gentle elliptical shape, it is possible to polish the finish better without using the belt pressing roller 24, When the central portion of the tire cross section is close to a straight line, the polishing cannot be performed unless the polishing belt 21 is brought into contact with a strong force. Therefore, the belt is pressed strongly with the belt pressing roller 24 for polishing. Some tires have a recess in the center of the cross section, and in this case as well, the belt pressing roller 24 can be used to polish with a good finish.

  The belt driving means 30 has a belt support frame 31 that rotatably supports the drive pulley 22 and the driven pulley 23 that support the polishing belt 21, and the support shafts of the belt pressing roller 24. 31 is connected to a vertical base shaft 45 provided at a free end of the belt connecting / disconnecting means 40, which will be described in detail later. The belt support frame 31 is provided with a belt drive motor 32 that rotationally drives the drive pulley 21, and the drive pulley 21 is rotated by the belt drive motor 32.

  In this embodiment, the belt support frame 31 and the belt attaching / detaching means 40 are coupled to the vertical base shaft 45 provided in the belt attaching / detaching means 40 and the hole provided in the belt supporting frame 31. It is also possible to provide a base shaft (45) on the belt support frame 31 to couple them together.

  The belt separating / connecting means 40 includes a first link 41, a second link 42 and a third link 43 pivotally attached to the free end of the first link 41, and the second and third links A vertical base shaft 45 rotatably connected to the belt support frame 31 is provided on a base substrate 44 provided at the free ends of the links 42 and 43.

  The first link 41 has a base end portion pivotally attached to the mount 11 by a pivot 46, and the second and third links 42 and 43 have base end portions pivoted to the first link 41. The tip end of the second link 42 is attached to the vertical base shaft 45 provided on the base substrate 44, and the tip end of the third link 43 is connected to the base substrate 44 by the shaft 49. The second and third links 42 and 43 are connected to the base substrate 44 while maintaining a parallelogram shape in plan view.

  The belt separating / connecting means 40 is provided with a handle mechanism 50 for rotating the first link 41. In the handle mechanism 50, a handle 51 is pivotally attached to a gantry 11 by a support shaft 52, and a lever rod 53 is provided on the support shaft 52. In addition, an L-shaped lever rod 54 is rotatably mounted on the gantry 11 by another supporting shaft 55 provided at a position distant from the supporting shaft 52. An intermediate link 56 is pivotally attached to the tip of the lever rod 53, and the other end of the L-shaped lever rod 54 and the first link 41 are pivotally attached via an auxiliary link 57.

  The front end of the handle 51 protrudes from the gantry 11, and the first link 41 rotates around the pivot 46 by operating the handle. That is, since the handle 51 and the first link 41 are rotated in the same direction, if the handle 51 is rotated clockwise in plan view, the first link 41 is also rotated in the clockwise direction (operating the handle 51). It is designed to rotate left) The action of the polishing belt 20 contacting the tire polishing surface 2 when the first link 41 rotates will be described in detail later.

  In addition, the first link 41 is provided with a cylinder mechanism that independently rotates the second link 42. 58 is a fluid pressure cylinder using air pressure or the like provided in the first link 41, and a piston rod 59 connected to a piston (not shown) protrudes from the cylinder and is connected to the second link 42. The pressure cylinder 58 is driven to rotate the second link 42 together with the third link 43, thereby bringing the polishing belt 20 into contact with the tire 1 and making the polishing possible. The fluid pressure cylinder 58 is provided with a pressure reducing valve (not shown).

The polishing belt swinging means 60 is incorporated between a belt support frame 31 on which the polishing belt 21 is mounted and a base substrate 44 provided on the second and third links 42 and 43. The base substrate 44 is formed with an arc-shaped through hole 61 centered on the axis of the vertical base shaft 45, and a cam follower 62 provided on the belt support frame 31 is slidably received in the arc-shaped through hole 61. The belt support frame 31 and the base substrate 44 are connected to each other via a vertical base shaft 45 and a cam follower 62.

  The arc-shaped through hole 61 and the cam follower 62 constitute a swing angle regulating means for regulating the swing angle of the belt support frame 31, and the arc-shaped through hole 61 has the vertical base shaft 45 and the third link. It is formed in the middle of 43 pivoted positions.

The cam follower 62 is accommodated and accommodated inside the arc-shaped through hole 61, but at the same time reaches the back surface beyond the arc-shaped through hole 61. The cam followers 62 projecting from the arc-shaped through holes 61 sandwich the free ends of the sandwiching links 64a and 64b that are pivotally attached to the base substrate 44 by the retaining shaft 63 (FIG. 5) . Further, in order to maintain the state where the sandwiching links 64a and 64b always sandwich the cam follower 62, a coil spring 65 is provided that urges the free ends of the sandwiching links 64a and 64b toward each other. Reference numeral 66 denotes a stopper abutment provided on a line connecting the vertical base shaft 45 and the shaft 49 of the base substrate 44, and abuts the tips of the stoppers 67 provided on the holding links 64a and 64b. These stoppers 67 have a structure in which the protruding length can be adjusted.

  Next, the operation in this embodiment will be described. 6 and 7 show the process of polishing the ground contact surface of the tire, FIG. 6A shows the state before the start of the polishing operation, and FIG. 6B shows the state where the polishing belt is in contact with the tire polishing surface. Is shown. When starting the polishing operation, first, the tire 1 is mounted on the tire support shaft 13 and fixed so that the tire does not fall off during the polishing operation. Further, the first link 41 and the handle 51 are directed in a direction orthogonal to the axial direction of the tire support shaft 13, and the polishing belt 21 is opposed to the tire polishing surface 2. At the same time, the piston rod 59 of the fluid pressure cylinder 58 protrudes from the cylinder and the second link 42 is rotated counterclockwise, so that the polishing belt 21 is retracted to a position away from the tire polishing surface 2.

  The belt support frame 31 that supports the polishing belt 21 is provided on the base substrate 44 by a vertical base shaft 45, and the second and third links 42 and 43 form a parallelogram on the base substrate 44. Therefore, when the second link 42 is rotated, the third link 43 is rotated while maintaining a parallel state with respect to the second link 42. When the third links 42 and 43 are rotated, the direction of the base substrate 44, that is, the direction of the polishing belt 21, moves forward and backward while always facing the tire polishing surface 2.

  In the present embodiment, the worker grinds the tire while visually observing the tire. The worker stands on the right side of the drawing in FIG. 6A and positions the handle 51 so that the handle 51 can be operated with the right hand. . Here, the tire 1 is rotated clockwise in front view by the tire rotation motor 14, and the polishing belt 21 is moved from the upper side to the lower side when the tire surface is polished by the belt drive motor 32. Rotate.

  To polish the tire polishing surface 2 of the tire 1 set as described above, in FIG. 6A, the fluid pressure cylinder 58 is operated to immerse the piston rod 59, and the second link 42 is connected to the third link 42. The base substrate 44 is brought close to the tire 1 by rotating clockwise together with the link 43, and the polishing belt 21 is brought into contact with the tire polishing surface 2 as shown in FIG. At this time, as shown in FIG. 7, the cam follower 62 of the tire support frame 31 supporting the polishing belt 21 is maintained in a state of being sandwiched between sandwiching links 64a and 64b provided on the base substrate 44.

  The polishing pressure when the polishing belt 21 is bonded to the tire polishing surface 2 to polish the tire surface is adjusted by the fluid pressure supplied to the fluid pressure cylinder 58. In addition, when the handle 51 is turned in the left-right direction in the illustrated state, the first link 41 is rotated via the intermediate link 56 and the auxiliary link 57, and the second and third shafts attached to the first link 41 are pivoted. The base substrate 44 is moved by the links 42 and 43, and the polishing belt 21 is moved in the tire width direction along the polishing surface while being bonded to the tire polishing surface 2. As a result, the polishing belt 21 can polish the entire area of the tire polishing surface 2. The polishing belt 21 rotates from the upper side to the lower side when the tire surface is polished, so that the polishing residue can be easily collected.

  Note that an intermediate link 56 and an auxiliary link 57 are provided between the handle 51 and the first link 41, and these rotate the first link 41 in the same direction as the handle 51. When the handle 51 is turned leftward (clockwise), the polishing belt 21 moves leftward, and when the handle 51 is turned rightward (counterclockwise), the polishing belt 21 moves rightward.

  In the present embodiment, the polishing work by the polishing belt 21 can be applied to the tires 1 having different outer diameters as shown in FIG. Moreover, the depth which grind | polishes the surface of the tire grinding | polishing surface 2 with the grinding | polishing belt 21 is about 0.2-0.5 mm.

  8 and 9 show a process of polishing the corner of the tire. 8A shows the case where the polishing belt polishes the left corner of the tire, and FIG. 8B shows the case where the polishing belt polishes the right corner of the tire. Yes.

  Since the second link 42 is urged clockwise by the fluid pressure cylinder 58 as described above, the polishing operation is performed while the polishing belt 21 presses the tire polishing surface 2. When the belt central portion of the polishing belt 21 reaches the tire corner (left corner) as shown in FIG. 8A, the polishing belt 21 changes the direction of the polishing surface along the tire corner. That is, the cam follower 62 provided on the belt support frame 31 that supports the polishing belt 21 moves in the arc-shaped hole 61 of the base substrate 44, thereby causing the belt support frame 31 to swing with the polishing belt 21. .

  In FIG. 9, the belt support frame 31 that supports the polishing belt 21 is provided so as to be rotatable about the vertical base axis 44 of the base substrate 44, so that the belt support frame 31 is watched about the vertical base axis 44. When rotating in the direction, the cam follower 62 moves toward the left side of the arcuate hole 61 while expanding the tip of the holding link 64b against the coil spring 65. By allowing the belt support frame 31 to rotate clockwise in a plan view, the polishing belt 21 moves while the corners of the tire 1 are joined to the tire and continues the polishing operation.

  When the polishing belt 21 finishes polishing the corner of the tire 1 and returns to the tire polishing surface 2 again, the cam follower 62 is clamped by the clamping links 64a and 64b, and the clamping links 64a and 64b are coil springs 65. Therefore, when the polishing belt 21 returns to the tire polishing surface 2, the polishing belt 21 immediately returns to the state facing the tire polishing surface 2.

  FIG. 8B shows the state of polishing when the polishing belt 21 reaches the right corner of the tire 1, and the belt support frame 31 and the polishing belt 21 turn in the opposite direction to the above, but swing motion The operation of is the same as described above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The top view of FIG. The perspective view which shows a grinding | polishing belt and a belt drive means. The longitudinal cross-sectional view of FIG. The bottom view of an abrasive belt swing means. Explanatory drawing which shows the process of grind | polishing the contact surface of a tire with a grinding | polishing apparatus. The enlarged view of the grinding | polishing surface in FIG. Explanatory drawing which shows the process of grind | polishing the corner of a tire with a grinding | polishing apparatus. The enlarged view of the grinding | polishing surface in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tire 2 Tire grinding | polishing surface 10 Tire rotation means 11 Mount 12 Bearing box 13 Tire support shaft 14 Tire rotation motor 15 Belt or chain 20 Polishing belt means 21 Polishing belt 22 Drive pulley 23 Driven pulley 24 Belt pressing roller 25 Cylinder device 30 Belt drive Means 31 Belt support frame 32 Belt drive motor 40 Belt separation / contact means 41 First link 42 Second link 43 Third link 44 Base substrate 45 Vertical base axis 46 Axis 47, 48, 49 Axis 50 Handle mechanism 51 Handle 52 Support Shaft 53 Lever rod 54 L-shaped lever rod 55 Support shaft 56 Intermediate link 57 Auxiliary link 58 Fluid pressure cylinder 59 Piston rod 60 Abrasive belt swinging means 61 Arc-shaped through-hole 62 Cam follower 63 Stop shaft 64 Holding link 65 Coil spring 66 Stopper metal fitting 67 Stopper

Claims (5)

Tire rotating means (10) for rotating the tire, abrasive belt means (20) for polishing the surface of the tire, belt driving means (30) for rotating the abrasive belt means, and the abrasive belt means facing the tire. a belt disjunction means (40) for the disjunction Te, comprising an abrasive belt oscillating means for enabling swinging motion (60) to pivot the polishing belt means at a corner portion of the tire, the polishing belt means endless A polishing belt (21) formed in a belt and provided in a direction parallel to the rotation axis of the tire, and the belt driving means has a belt support frame (31) for rotatably supporting the polishing belt, The belt separating means has a base substrate (44) connected to the belt support frame so as to be freely rotatable in the horizontal direction, and the base substrate is provided so as to be movable in the horizontal direction with respect to the tire polishing surface. , The polishing belt swing means has swing angle restricting means (61, 62) for restricting the swing angle of the belt support frame, and a link (42) is pivotally attached to the base substrate, and a handle mechanism is attached to the link. (50) and a cylinder mechanism (58) are provided, the base substrate is moved in the width direction of the tire by operation of the handle mechanism, and the base substrate is moved forward and backward toward the grinding surface of the tire by operation of the cylinder mechanism. An automobile tire surface polishing apparatus characterized by comprising: The belt connecting / disconnecting means (40) includes a base substrate (44) connected to the belt support frame (31) and first to third links (41, 42, 43), and a base end of the first link. And a free end formed in a parallelogram shape with respect to the second and third links, and the free ends of the second and third links are attached to the base substrate. A shaft mechanism is attached, a handle mechanism (50) is provided on the first link, and a cylinder mechanism (58, 59) is provided on one of the second and third links. 2. A surface polishing apparatus for an automobile tire according to 1. The handle mechanism (50) has a handle (51) pivotally attached to the polishing apparatus, and another position of the polishing apparatus is provided at a free end of a lever rod (53) provided on the shaft portion of the handle. An L-shaped lever rod (54) pivotally mounted on the shaft is pivotally mounted via an intermediate link (56), and the L-shaped lever rod and the first link (41) are pivotally mounted by an auxiliary link (57). 2. The apparatus for polishing a surface of an automobile tire according to claim 1, wherein the handle and the first link are rotatable in the same direction. The polishing belt swinging means (60) includes an arc-shaped hole (61) provided in the base substrate (44) and a cam follower (62) provided in the belt support frame (31). The cam follower is formed into the arc-shaped hole. The apparatus for polishing a surface of an automobile tire according to claim 1, wherein the two are engaged to couple the two. The swinging angle regulating means (61, 62) of the polishing belt swinging means (60) engages the cam follower (62) of the belt support frame (31) in the arc-shaped hole (61) provided in the base substrate (44). The cam follower is sandwiched by sandwiching links (64a, 64b) pivotally attached to the base substrate, and the free ends of the sandwiching links are urged toward each other. Item 2. A surface polishing apparatus for an automobile tire according to Item 1.

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