JP4194985B2 - FITTING DEVICE AND FITTING METHOD FOR TIRE ASSEMBLY - Google Patents

Description

  The present invention provides a fitting for fitting a tire bead portion properly around a rim flange portion of a wheel in a tire assembled with a wheel (hereinafter, the assembled tire unit is referred to as a tire assembly). The present invention relates to an apparatus and a fitting method.

  Examples of conventional fitting devices include those described in Patent Documents 1 and 2. First, in Patent Document 1, the upper four pressing rollers are arranged at 90 degree intervals on both sides of a horizontally oriented tire, and the lower 4 is arranged with a phase shifted by 45 degrees with respect to the upper four pressing rollers. After pressing so as to be sandwiched between the pressing rollers at the locations, each pressing roller rolls along the side surface of the tire so that the bead portion of the tire is recessed around the rim flange portion of the wheel (reference numeral 11e in Patent Document 1). ) Is disclosed. Then, as is clear from FIG. 7 and the like of Patent Document 1, the specific pressing part in the tire is a side peripheral edge (a part close to the tread, which is a reference numeral 12a in Patent Document 1) away from the bead portion of the tire. Thus, it is described that the deformation direction of the side surface of the tire is controlled to fit the bead portion smoothly into the recess.

  However, according to this technique, a plurality of pressing rollers press the side surface of the tire, and the pressing rollers are out of phase with respect to the circumferential direction between the upper side and the lower side. As described above, there is a problem that the entire side surface of the tire is deformed in a wavy shape, and at this time, the bead portion once fitted in the concave portion is detached again and easily gets on the hump portion (reference numeral 11d in Patent Document 1). Further, since the bead portion is displaced by pressing the peripheral edge of the side surface away from the bead portion of the tire and causing the side surface to function so-called, the transmission efficiency of the force based on the pressing force of the pressing roller tends to deteriorate. Therefore, in this case, in order to ensure that the bead portion fits into the recess over the entire circumference of the tire without applying excessive force to the side surface of the tire, it is necessary to rotate the pressing roller several times with respect to the tire. As a result, there is a problem that the working efficiency of the fitting process is lowered.

On the other hand, in Patent Document 2, a technique for fitting the bead portion to the recess by continuously hitting a plurality of locations on the inner side surface portion close to the bead portion by a pressing roller or the like on each side surface of the tire. According to this technique, since the hit location is close to the bead portion, the entire side surface of the tire is not deformed in a wavy shape, and the bead portion fitted in the recess is not likely to come off again. Further, since the hitting location is close to the bead portion, the force based on the hitting force is efficiently concentrated locally on the bead portion, and a sufficient force is transmitted around the predetermined bead portion by one hit. Therefore, in order to ensure that the bead portion fits into the recess over the entire circumference of the tire, the number of times of rotation of the tire with respect to the pressing roller can be reduced.
JP-A-8-175134 (paragraphs 0009, 0021, 0022, FIGS. 6 and 7) JP-A-10-217725 (paragraphs 0016 and 0017, FIG. 4)

  The striking mechanism described in Patent Document 2 has a structure in which the arm is swung by a cam mechanism to strike the side surface of the tire with a pressure roller provided at the tip of the arm. However, in the cam mechanism, in order to increase the swinging width of the arm in order to ensure a sufficient striking force, it is necessary to enlarge the cam, and as a result, a drive source for driving the cam needs to have a large torque Therefore, there is a problem that the fitting device tends to be expensive. In addition, since the cam mechanism generates a large amount of friction on the cam surface, the fitting device is costly due to the necessity of a quenching process in the manufacture of the cam and the selection of a material with excellent wear resistance. It becomes easy to become high. Since the noise caused by the friction is large, the working environment is likely to deteriorate.

  Furthermore, although the fitting device described in Patent Document 2 strikes a plurality of locations on one side of a tire simultaneously (see FIG. 4B in Patent Document 2), in this structure, as described above, the entire side surface is hit. Since there is no wavy deformation, the problem of detachment of the bead portion once fitted in the recess is unlikely to occur, but the deformation between the hit locations around the bead portion affects each hit location, and the predetermined displacement amount of the bead portion is There is also a problem that it is difficult to obtain.

  An object of the present invention is to provide a fitting device and a fitting method for a tire assembly that can solve the above problems.

  In order to solve the above-described problems, the present invention provides a gripping means for gripping the center portion of the tire assembly, a rotating means for rotating the tire assembly, and a fitting means for fitting the bead portion of the tire around the rim flange portion of the wheel. A fitting device for a tire assembly, wherein the fitting means includes a deformation means for deforming by applying an external force to a side surface of the tire, and the deformation means includes a drive means for rotating, and the drive Crank means for converting the rotational movement of the means into reciprocating movement, rocking means for converting the reciprocating movement of the crank means into arc movement, and both sides of the tire in the circumferential direction of the tire by the arc movement of the rocking means A tire assembly fitting device provided with striking means for striking simultaneously at a single location having the same phase.

  According to the tire assembly fitting apparatus, a lever crank mechanism is configured, and a driving source with a small torque is sufficient as the driving means, and the striking means can be swung with a sufficient swinging width. Further, since the structure does not generate much friction as compared with the case where the cam mechanism is used, it is advantageous in terms of the strength and wear resistance of the constituent members. Since noise caused by friction is greatly reduced, the work environment is improved. Since both sides of the tire are hit simultaneously at a single location having the same phase in the circumferential direction of the tire, the hitting force concentrates on the bead portion. Accordingly, a sufficient amount of displacement is imparted to the bead portion, and the bead portion is surely fitted around the rim flange portion.

Further, the present invention is a fitting method for fitting a bead portion of a tire around a rim flange portion of a wheel in a tire assembly, wherein both sides of the tire are in a single position having the same phase in the circumferential direction of the tire. At the same time, the striking means performing reciprocating arc motion was used for the tire assembly fitting method in which the reciprocating arc motion of the striking means was obtained by converting the rotational motion of the drive source via the crank mechanism .

  According to the fitting method of the tire assembly, the hitting force concentrates on the bead part without being affected by the deformation between the hitting points as in the prior art. Accordingly, a sufficient amount of displacement is imparted to the bead portion, and the bead portion is surely fitted around the rim flange portion.

  According to the tire assembly fitting device of the present invention, a lever crank mechanism is configured, and a drive source with a small torque is sufficient as the drive means, and the striking means is swung with a sufficient swing width. Can do. Further, since the structure does not generate much friction as compared with the case where the cam mechanism is used, it is advantageous in terms of the strength and wear resistance of the constituent members. Further, since noise caused by friction is greatly reduced, the work environment is improved. Moreover, according to the fitting method of the tire assembly which concerns on this invention, it is not received from the influence from the deformation | transformation between several hit | damage locations like the past, and hit | damage force concentrates on a bead part. Accordingly, a sufficient amount of displacement is imparted to the bead portion, and the bead portion is surely fitted around the rim flange portion.

  FIG. 1 is a schematic perspective view of a tire assembly fitting device (hereinafter simply referred to as a fitting device) according to the present invention, and FIG. 2 is a front view of the fitting device as viewed from the upstream side in the conveyance direction of the tire assembly. FIG. 3 is an explanatory view taken along the arrow B in FIG. 1, FIG. 5 is an explanatory view taken along the arrow C, and FIG. 5 is an explanatory plan view of the fitting device. In FIG. 1, the fitting device 1 is divided into functional areas, and tire assemblies W (not shown in FIG. 1, hereinafter, FIG. 2 etc. are shown for the tire assemblies W, and FIG. (See FIG. 16), and a fitting station S2 that forms an area for fitting the tire bead portion W5 (FIG. 16) around the wheel rim flange portion W4 (FIG. 16). In between, a conveying means 2 for conveying the tire assembly W located at the carry-in station S1 to the fitting station S2 is interposed. Around the fitting station S2, there are gripping means 3 for gripping the center hole W2 (FIG. 16) of the tire assembly W located at the fitting station S2, and rotation means 4 for rotating the tire assembly W about its rotation axis. The fitting means 5 for fitting the bead portion W5 (FIG. 16) of the tire around the rim flange portion W4 (FIG. 16) of the wheel and, as will be described in detail later, the outside of the portion where the external force is applied by the fitting means 5 And a pressing means 6 for pressing the side surface W3 (FIG. 16) of the tire.

"Conveying means 2"
6 and 7 are explanatory side views of the roller conveyor constituting the conveying means, an explanatory plan view, FIG. 8 is an explanatory front view of the periphery of the lifting means constituting the conveying means, and FIG. 9 is a clamping means constituting the conveying means. It is a surrounding plane effect explanatory view. FIG. 10 is an external perspective view showing the structure around the clamping means, and FIG. 11 is an external perspective view of the roller conveyor. As shown in FIG. 1, the conveying means 2 of this embodiment includes a roller conveyor 11 laid between a carry-in station S1 and a fitting station S2, and a tire assembly placed on the roller conveyor 11 in a lying state. A sandwiching means 12 that sandwiches the outer peripheral surface of W, a transport base 13 that carries the sandwiching means 12 and moves along the roller conveyor 11, a guide means 14 that guides the movement of the transport base 13, and a sandwiching means 12 As shown in FIG. 8 (b), the lifting / lowering means 15 capable of ascending the transport base 13 is provided so that the tire assembly W sandwiched in the step is placed on the roller conveyor 11 in an inclined manner.

  First, the roller conveyor 11 will be described mainly with reference to FIG. 6, FIG. 7 and FIG. 11 (particularly with reference to FIG. 11). The roller conveyor 11 has the tire assembly W on the disk of the wheel W1 on the upper side. The roller conveyor 16 is placed and transported in a lying state, and is divided into a roller conveyor 16 positioned at the loading station S1 and a roller conveyor 17 positioned at the fitting station S2 connected to the roller conveyor 16. . The roller conveyors 16 and 17 of this embodiment are so-called free roller conveyors. In addition, on the downstream side of the roller conveyor 17, a roller conveyor 18 for carrying out the tire assembly W after the fitting process is installed as a pair of left and right with the center portion opened. The transport rollers 19 (indicated by phantom lines in FIG. 11) of the roller conveyor 16 are long rollers having a dimensional length equal to or larger than the diameter of the tire assembly W (the plurality of transport rollers 19 located on the downstream side are the center). It is a short roller because it is configured as a pair of left and right by opening the part), and is rotatably supported by a frame 20 fixed to the floor.

  Stoppers 23 and 24 that can be raised and lowered by cylinders 21 and 22 (FIG. 6) attached to the frame 20 are disposed at the upstream end and the downstream end of the roller conveyor 16, respectively. The stoppers 23 and 24 are each configured as a pair of left and right bars that are erected. A passage confirmation sensor 25 for confirming a passing state of the tire assembly W carried into the roller conveyor 16 is attached to the upstream side of the frame body 20, and the tire assembly W is disposed to the downstream side of the frame body 20. An arrival confirmation sensor 26 for confirming arrival at a predetermined position on the roller conveyor 16 is attached. In the figure, each sensor is a light-reflective sensor, and reference numerals 25a and 26a in FIG. 11 denote reflectors. When the tire assembly W is loaded into the roller conveyor 16 (loading station S1) from the previous step with the stopper 23 lowered and the stopper 24 raised under such a configuration, the passage confirmation sensor 25 and arrival confirmation are performed. The sensor 26 detects the carry-in state of the tire assembly W, and the stopper 23 is raised to restrict the next carry-in of the tire assembly W.

  On the other hand, the roller conveyor 17 of the fitting station S2 is composed of a pair of left and right transport rollers 27a and 27b arranged with the center opened, and the left transport roller group 27a in the transport direction of the tire assembly W is a frame. The right side transport roller group 27b is rotatably supported by the body 28a on the frame body 28b. The frame body 28a and the frame body 28b are connected by a frame body 28c, whereby the transport rollers 27a group and 27b group are configured integrally. The transport roller 27b group is further divided into two parts with a spacing in the transport direction of the tire assembly W, but each frame body 28b is connected by a frame body 28d positioned below so as to be integrated. It is what is done. The space between the divided transport rollers 27b group becomes a clearance space for the lower hammer 138 (see FIG. 14) of the fitting means 5 described in detail later.

  A cylinder 29 is installed vertically below the central space of the roller conveyor 18, and the frame body 28 c is connected to the upper end of a rod 29 a that expands and contracts in the vertical direction via a bracket 30. Yes. Guide rails 32 are vertically attached to the left and right frames 31a and 31b that support the roller conveyor 18, and the guide members 32 that engage with the guide rails 32 are attached to the frames 28a and 28b on the roller conveyor 17 side. 33 are attached as a pair of upper and lower sides. With the above configuration, when the rod 29a of the cylinder 29 expands and contracts, the roller conveyor 17 composed of the transport roller 27a group and the 27b group moves up and down while being guided by the guide rail 32.

  Next, the clamping means 12, the conveyance base 13, the guide means 14, and the elevating means 15 will be described mainly with reference to FIG. Above one side of the roller conveyor 11 (shown in phantom lines in FIG. 10) (on the left side in the present embodiment in the direction of conveyance of the tire assembly W) is a rodless cylinder 41 in the direction of conveyance of the tire assembly W. It is arranged along. The main body of the rodless cylinder 41 is fixed to a long rectangular substrate 42. As shown in FIGS. 2 and 3, the substrate 42 is supported on a lower surface thereof by a fixed shaft 76 along the conveyance direction of the tire assembly W, and is configured to be rotatable around the fixed shaft 76. ing. In FIG. 10, a sliding member 41a that slides in the longitudinal direction of the main body by driving the cylinder on the main body of the rodless cylinder 41 has one end of a connecting plate 43 extending toward the center of the roller conveyor 11. The side is connected. Above the roller conveyor 11, a conveyance base portion 13 that is a U-shaped frame assembly in plan view with an opening on the conveyance direction side of the tire assembly W is disposed, and the frame side portion 13 a on the left side of the conveyance base portion 13 is arranged on the left side. The other end side of the connecting plate 43 is fixed.

  Guide frames 13c and 13d are formed outside the front and rear ends of the frame side portion 13a, and a guide member 74 is attached to the lower surface thereof. A guide rail 75 is mounted on the substrate 42 in parallel with the rodless cylinder 41, and the guide member 74 is engaged with the guide rail 75. As will be described in detail later, the frame base portion 13 b side of the transport base portion 13 is guided and supported by a guide bar 70 positioned parallel to the guide rail 75 via a guide member 69. The guide member 74, the guide rail 75, the guide member 69, and the guide bar 70 constitute the guide means 14, and the slide member 41 a is moved along the conveyance direction of the tire assembly W by driving the rodless cylinder 41. When moved, the transport base 13 moves in the same direction via the connecting plate 43. At this time, the transport base 13 moves in a stable state because it is guided by the left and right guide rails 75 and the guide bar 70.

  The clamping means 12 mounted on the conveyance base 13 will be described. The frame side portion 13a is positioned along the longitudinal direction of the frame side portion 13a, that is, the conveyance direction of the tire assembly W, and the vertical direction is the axial direction. Are pivotally supported via bearings (not shown). The lower portions of the rotary shafts 44, 45, and 46 protrude below the frame side portion 13a, and gears 47, 48, and 49 are axially attached to the protruding portions, and the gears 47 and 49 mesh with the central gear 48. is doing. The main body of the cylinder 50 is attached to the transport base 13 horizontally via a bracket 51 so as to be rotatable around a vertical axis. The upper portion of the rotating shaft 45 protrudes upward from the frame side portion 13 a, and an arm 52 is fixed to the protruding portion, and the tip of the rod 50 a of the cylinder 50 is about a vertical axis with respect to the arm 52. It is connected so that it can rotate. Nipping arms 53 and 54 extending horizontally toward the roller conveyor 11 are respectively attached to the lower ends of the rotating shafts 44 and 45, and the vertical ends of the holding arms 53 and 54 are axially attached to the respective ends. A clamping roller 55 having a direction is vertically suspended. The sandwiching arms 53 and 54 are in a plane symmetric relationship with respect to a virtual vertical plane along the width direction of the roller conveyor 11. A swing arm 56 is attached to the upper portion of the rotating shaft 46 protruding upward from the frame side portion 13a.

  On the right side frame 13b, there are two rotating shafts (reference numerals 57 and 58 in order from the downstream side) that are positioned along the conveying direction of the tire assembly W and that each have a vertical direction as an axial direction. It is supported via The lower portions of the rotary shafts 57 and 58 protrude downward from the frame side portion 13b, and the respective gears 59 and 60 are axially attached to the protruding portions. Nipping arms 61 and 62 extending horizontally toward the roller conveyor 11 are respectively pivotally attached to the lower ends of the rotation shafts 57 and 58. A clamping roller 55 having a direction is vertically suspended. The sandwiching arms 61 and 62 are also symmetrical with respect to a virtual vertical plane along the width direction of the roller conveyor 11, and the sandwiching arms 53 and 54 and the sandwiching arms 61 and 62 are in the conveyance direction of the tire assembly W. Is symmetric with respect to a virtual vertical plane along the line. A swing arm 63 is pivotally attached to the upper portion of the rotating shaft 58 protruding upward from the frame side portion 13 b, and the swing arm 63 and the swing arm 56 are connected by a connecting rod 64. .

  The clamping means 12 has the above-described configuration. When the rotary shaft 45 rotates through the arm 52 by expansion and contraction of the rod 50a of the cylinder 50, the clamping means 12 is clamped by the intervention of the gears 47, 48, 49, the connecting rod 64, the gears 59, 60, The arms 53, 54, 61, 62 rotate synchronously. When the tire assembly W is clamped, the rod 50a is retracted from the extended state to rotate the clamp arms 53 and 54 so as to be close to each other, and the clamp arms 61 and 62 are also rotated so as to be close to each other. Let Thereby, the tire assembly W is clamped by the four clamping rollers 55 on the outer peripheral surface thereof.

  Next, the lifting means 15 will be described. A pair of mutually parallel support plates 65 are erected along the width direction of the roller conveyor 11 on the upper surface of the frame side portion 13b. Referring also to FIG. 8, one end side of each support plate 65 extends to the outer side in the width direction of the roller conveyor 11 from the frame side portion 13 b, and the tire assembly W is between the extended portions. A connecting plate 67 is provided so as to be rotatable around a shaft 66 along the conveying direction. The main body of the cylinder 68 is attached to the lower surface of the connecting plate 67, and the tip of the rod 68 a protruding upward through a through hole formed in the connecting plate 67 is connected to the guide member 69. Above the right side of the roller conveyor 11, a guide bar 70 having a perfectly circular cross section attached to the frame body 71 (FIG. 10) along the conveyance direction of the tire assembly W is located. It is fitted on the guide bar 70 so as to be slidable and rotatable. Reference numeral 72 denotes a guide pin having a function of guiding the linear movement of the connecting plate 67 with respect to the guide member 69, and is fixed to the guide member 69. The guide pin 72 is inserted into a guide hole 73 formed in the connecting plate 67.

  When the rod 68a of the cylinder 68 is retracted from the extended state in the state where the tire assembly W is clamped by the clamping roller 55 as shown in FIG. However, it rises to the side of the guide member 69 fitted on the guide bar 70 which is a fixed member. The connecting plate 67 moves linearly relative to the guide member 69 and rises. At this time, the guide member 69 slightly rotates clockwise in FIG. 8 with respect to the guide bar 70, and the shaft 66 rotates counterclockwise around the fixed shaft 76. Slightly turns around. That is, as shown in FIG. 8B, the conveyance base 13 rotates around the fixed shaft 76 so that the frame side 13 b on one side rises higher than the frame side 13 a on the other side. As a result, the tire assembly W is inclined and only a part of the side surface (bottom surface) near the frame side portion 13 a is placed on the roller conveyor 11. In this state, the conveyance base 13 is moved to the fitting station S2 (FIG. 1) side by driving the rodless cylinder 41, whereby the tire assembly W is conveyed to the fitting station S2 while maintaining the inclined state.

  Here, since the fixed shaft 76 serving as the rotation center of the conveyance base 13 is located on the side of the conveyance base 13, the tire assembly W is firmly clamped by the clamping roller 55 and the rotation of the conveyance base 13 is performed. Assuming a case where the moving angle is increased, the tire assembly W is completely lifted from the roller conveyor 11 while being inclined. However, in the present embodiment, the stroke of the cylinder 68 is reduced to set the rotation angle of the conveyance base 13 and the tire assembly W is dropped by its own weight. It is designed to be placed in an inclined shape.

"Gripping means 3"
As shown in FIGS. 2, 6, 7, etc., the gripping means 3 is located between the transport rollers 27 a and 27 b of the roller conveyor 17. 6 or 7, the frame body 81 is provided with a disk-shaped chuck base 82 so as to be rotatable about a vertical axis. Three chuck blocks 83 are arranged radially on the chuck base 82 in plan view. Each chuck block 83 is configured to be movable in synchronism with the chuck base 82 in the radial direction, and a chuck claw 83a is erected in the vertical direction at the ends near the center. The flat cross-sectional shape of each chuck claw 83a has a fan shape, and is positioned so that the end sides of the central angle are close to each other, so that it is coaxial with the rotation axis of the chuck base 82 and is divided into three in the circumferential direction. The one cylindrical member of the aspect made is comprised. Further, as shown in FIG. 16, a receiving member 84 for receiving the lower surface of the disk of the wheel W1 is fixed on the upper surface of the chuck block 83. The receiving member 84 is made of a urethane material or the like from the viewpoint of preventing the wheel W1 from being damaged.

  The gripping means 3 has the above-described configuration. When the roller conveyor 17 on which the tire assembly W is placed is lowered, the tire assembly W is received by the disk of the wheel W1 as shown in FIG. 84, and three chuck claws 83a in a reduced diameter state are inserted into the center hole W2. By moving the three chuck claws 83a in the diameter increasing direction from this state, the inner edge portion of the center hole W2 is chucked by the chuck claws 83a, and the tire assembly W is fixed to the chuck base portion 82.

"Pressing means 6"
As shown in FIG. 2 and the like, the pressing means 6 is disposed above the roller conveyor 17 in the fitting station S2. The pressing means 6 of the present embodiment can be moved up and down, presses the upper side surface W3 (FIG. 16) of the tire of the tire assembly W when it descends, and follows the rotation of the tire assembly W. A plurality of rotating pressing rollers 85 are provided. As shown in FIG. 13 (appearance perspective view showing the pressing means 6), a cylinder 88 is vertically attached to the frame 86 disposed above the fitting station S2 via a bracket 87, and is directed downward. A roller substrate 89 is horizontally fixed to the lower end of the extended rod 88a. The roller substrate 89 has a shape in which three plate portions are radially extended from the center portion, and does not interfere with an upper hammer 137 (FIG. 14) described in detail later during fitting.

  A plurality of (three in the present embodiment) pressing rollers 85 are disposed on the lower surface of the roller substrate 89 radially with respect to the central portion thereof and at substantially equal intervals in the circumferential direction. Each pressing roller 85 is rotatably supported by a bracket 90 attached to a roller substrate 89, and the direction of the rotation axis in plan view is such that the rotation of the tire assembly W can be accompanied by rotation of the tire assembly W. It coincides with the radial direction of the assembly W. A pair of guide bars 91 are attached to the upper surface of the roller substrate 89 to extend upward and guide the lifting / lowering operation of the roller substrate 89 (pressing roller 85) by inserting the bracket 87 and the like. Further, as can be seen from FIG. 3, the pressing roller 85 is a tapered roller having a reduced diameter near the center of the roller substrate 89.

  The pressing means 6 is configured as described above. When the rod 88a is extended by driving the cylinder 88 and the roller substrate 89 is lowered, the plurality of pressing rollers 85 press the upper side surface W3 of the tire in the tire assembly W, When the tire assembly W is rotated by the rotating means 4 described in detail later, the pressing roller 85 presses the upper side surface W3 of the tire while performing so-called rotation.

"Rotating means 4"
As can be seen from FIG. 2, the rotating means 4 is disposed on one side of the fitting station S <b> 2 with the roller conveyor 17 interposed therebetween (in the present embodiment, on the left side in the conveyance direction of the tire assembly W). In FIG. 12 (an external perspective view showing the rotating means 4), a pair of guide rails 93 are laid on the frame body 92 along a direction orthogonal to the conveying direction of the tire assembly W (FIG. 2). A sliding base frame 95 is slidably attached via a plurality of guide members 94 engaged with the rail. A cylinder 96 is disposed along the guide rail 93 below the sliding base frame 95 between the guide rails 93. The sliding base frame 95 is attached to the rod 96a of the cylinder 96 via a bracket 95a protruding downward. Connected. The sliding base frame 95 has a standing plate portion 95b having a surface extending in a direction orthogonal to the guide rail 93, and a vertical side of the standing plate portion 95b faces the tire assembly W (FIG. 2). A pair of rotary drive rollers 97 having the direction as an axial direction are arranged in parallel via a bearing 98. A motor 99 is attached to the other surface side of the upright plate portion 95b with the output shaft as the upper side and the axial direction as the vertical direction. A pulley 100 is attached to the output shaft of the motor 99. The pulley 100, pulleys 101 and 101 attached to the upper ends of the rotation shafts of the respective rotation drive rollers 97, and a tension roller 102 provided on the standing plate portion 95b, A drive belt 103 is wound around the belt.

  The rotating means 4 is configured as described above, and the rod 96a is extended by driving the cylinder 96, the sliding base frame 95 is guided by the guide rail 93 and moved to the roller conveyor 17 (FIG. 2) side, and a pair of rotational driving is performed. By driving the motor 99 in a state where the roller 97 is in contact with the outer peripheral surface of the tire assembly W (FIG. 2), the pair of rotational driving rollers 97 are synchronously rotated via the drive belt 103, and the tire assembly Rotate W.

"Fitting means 5"
As can be seen from FIG. 2, the fitting means 5 is located on the opposite side of the fitting station S2 from the side on which the rotating means 4 is located with the roller conveyor 17 in between (in the present embodiment, on the right side in the conveying direction of the tire assembly W). It is arranged. The fitting means 5 has a deformation means for deforming by applying an external force to the side surface W3 (FIG. 16) of the tire. The deformation means includes a driving means 5A that rotates, as will be described in detail below, Crank means 5B for converting the rotational motion of the drive means 5A into reciprocating motion, swing means 5C for converting the reciprocating motion of the crank means 5B into arc motion, and the side surface W3 of the tire by the arc motion of the swing means 5C (FIG. 16). And a striking means 5D for striking.

  In FIG. 2, a pair of guide rails 105 are laid on the frame body 104 along a direction orthogonal to the conveyance direction of the tire assembly W. Hereinafter, with reference to FIG. 14 (appearance perspective view showing the fitting means 5), a sliding base frame 107 is slidable on the guide rail 105 via a plurality of guide members 106 engaged with the rail. Is attached. The sliding base frame 107 is connected to the motor 108 through a known feed screw mechanism (not shown), and is configured to slide on the guide rail 105 by driving the motor 108.

  The sliding base frame 107 has a vertical frame portion 107a erected vertically, and a bearing 109 disposed above the vertical frame portion 107a and a bearing 110 disposed below the vertical frame portion 107a. A screw rod 111 extending vertically is pivotally supported. The screw rods 111 are provided as a pair at intervals in the extending direction of the guide rail 105, and are connected to the pulleys 112 pivotally attached to the lower ends and the output shafts of the pair of motors 113 on the sliding base frame 107. A drive belt 115 is wound around the pulley 114 that is worn. A pair of guide rails 116 are vertically attached to the vertical frame portion 107a with an interval in the extending direction of the guide rail 105. A pair of upper and lower lift base frames 117 and 118 are attached to the pair of guide rails 116 via a plurality of guide members 119 engaged with the rails, respectively, and the lift base frames 117 and 118 are The screw threads 111 are respectively screwed into the screw rods 111 through respective female screw portions (not shown). In other words, the feed screw mechanism is configured by the engagement of the threaded portion, the guide rail 116 and the guide member 119, and each screw rod 111 is rotated individually by rotating each motor 113 independently. The lift base frames 117 and 118 are individually lifted and lowered by the action of the feed screw mechanism.

  The elevating base frames 117 and 118 are provided with drive motors 120 and 121 and speed reducer units 122 and 123 connected to output shafts of the drive motors 120 and 121, respectively. Rotating bodies 124 and 125 with the conveying direction of the tire assembly W (FIG. 2) as the rotation axis direction are attached to the shaft. The rotating bodies 124 and 125 are formed with connecting shafts 126 and 127 with the conveying direction of the tire assembly W (FIG. 2) as the rotating shaft direction at a position eccentric from the center of rotation. Each end of 128, 129 is rotatably connected. Near the roller conveyor 17 (FIG. 2) in each of the lifting base frames 117 and 118, a support shaft 131 whose axial direction is the conveyance direction of the tire assembly W via a bracket 130 (partially indicated by phantom lines), 132 is formed, and swing arms 133 and 134 each having a substantially “<” shape are attached to the respective support shafts 131 and 132 so as to be rotatable at the central bent portion. The other ends of the crank arms 128 and 129 are rotatably connected to connecting shafts 135 and 136 formed on the one ends of the swing arms 133 and 134, respectively. The other end sides of the swing arms 133 and 134 are formed as disk-shaped upper hammers 137 and lower hammers 138 that strike the upper and lower sides of the tire bead, respectively.

  In the above, the drive motors 120 and 121 constitute the drive means 5A, and the rotating bodies 124 and 125, the connection shafts 126 and 127, the crank arms 128 and 129, and the connection shafts 135 and 136 constitute the crank means 5B. The shafts 131 and 132 and the swing arms 133 and 134 constitute the swing means 5C, and the upper hammer 137 and the lower hammer 138 constitute the hitting means 5D.

  With the above configuration, when the drive motors 120 and 121 are driven to rotate the rotating bodies 124 and 125, the rotational motion of the connecting shafts 126 and 127 around the centers of the rotating bodies 124 and 125 is caused by the crank mechanism (specifically the lever). Is converted into a reciprocating arc motion around the support shafts 131 and 132 of the connecting shafts 135 and 136 via the crank arms 128 and 129 by the action of the crank mechanism). As a result, the swing arms 133 and 134 swing around the support shafts 131 and 132, and the upper hammer 137 and the lower hammer 138 strike the upper and lower surfaces of the tire near the bead portion intermittently. The upper hammer 137 and the lower hammer 138 strike the upper side and the lower side near the bead portion of the tire at the same time.

  Hereinafter, a series of operations of the fitting apparatus 1 (FIG. 1) will be described. In FIG. 11, when the tire assembly W is carried into the roller conveyor 16 (loading station S1) from the previous step with the stopper 23 lowered and the stopper 24 raised, the passage confirmation sensor 25 and arrival confirmation sensor 26 indicate this. The carry-in state of the tire assembly W is detected, and the stopper 23 is raised to restrict the next carry-in of the tire assembly W. Next, on the basis of the detection signal from the arrival confirmation sensor 26, the rod 50a of the cylinder 50 in the extended state as shown in FIG. 9A is retracted as shown in FIG. 54 is rotated so as to be close to each other, and the holding arms 61 and 62 are also rotated so as to be close to each other in synchronization with this. Thereby, the tire assembly W is clamped by the four clamping rollers 55 on the outer peripheral surface thereof.

  Next, when the rod 68a of the cylinder 68 shown in FIG. 8 (a) is retracted from the extended state, the connecting plate 67 rises, and the shaft 66 rotates slightly counterclockwise around the fixed shaft 76. As shown in b), the conveyance base 13 rotates around the fixed shaft 76 as an aspect in which the frame side 13b on one side rises above the frame side 13a on the other side. As a result, the tire assembly W is inclined and only a part of the side surface (bottom surface) near the frame side portion 13 a is placed on the roller conveyor 11. In this state, the stopper 24 (FIG. 11) is lowered, and the conveyance base 13 is moved to the fitting station S2 (FIG. 1) side by driving the rodless cylinder 41, so that the tire assembly W is fitted while maintaining the inclined state. It is transported to station S2.

  In this way, the tire assembly W is inclined and only a part of the side surface (bottom surface) is placed on the roller conveyor 11 and conveyed, so that the rim flange portion W4 on the lower side of the wheel W1 (FIG. 16). ) And the roller conveyor 11 can be prevented from being scratched. Further, the generation of scratches on the side surface W3 (FIG. 16) of the tire can be reduced to a level that can be almost ignored. Although it is conceivable that the rotation angle of the conveyance base 13 is increased by using a cylinder 68 with a large expansion / contraction stroke, and the tire assembly W is completely lifted from the roller conveyor 11 and conveyed, the tire assembly W is In this case, since the load is heavy, a load is easily applied to the holding arms 53 and 54, and it is necessary to pay attention to measures for reinforcing the members.

  When the tire assembly W is conveyed to a predetermined position on the roller conveyor 17 shown in FIG. 11, as shown in FIG. 9C, the rod 50a of the cylinder 50 extends to hold the holding arms 53, 54, 61. , 62 rotate in the opening direction, and the tire assembly W is unpinned. Thereafter, the slide base 41a moves backward, so that the transport base 13 returns to the carry-in station S1 (FIG. 1) side.

  Next, the roller conveyor 17 descends as the rod 29a of the cylinder 29 shown in FIG. 11 retracts. During the lowering, the tire assembly W on the roller conveyor 17 is transferred onto the receiving member 84 by the disk of the wheel W1, as shown in FIG. 15 (front explanatory view of the fitting device 1 at the time of fitting). The chuck claw 83a having a reduced diameter is inserted into the center hole W2. From this state, the chuck claw 83 a moves in the diameter increasing direction, whereby the tire assembly W is chucked and fixed to the chuck base 82.

  Next, when the cylinder 88 is driven, the rod 88a extends and the roller substrate 89 descends from above, and the pressing roller 85 (in FIG. 15, for convenience, the two pressing rollers 85 are shown in a side view). The upper side surface W3 of the tire in the tire assembly W is pressed. Then, the sliding base frame 95 moves toward the tire assembly W, and the rotational drive roller 97 contacts the outer peripheral surface of the tire assembly W. Around this time, the elevating base frames 117 and 118 are moved up and down to a predetermined position with respect to the vertical frame portion 107a by driving the pair of motors 113 (FIG. 14). The purpose is to position the upper hammer 137 and the lower hammer 138 at predetermined positions according to the tire width of the tire assembly W as well as the raising and lowering of the elevating base frames 117 and 118. Therefore, in the case of the fitting line process of the tire assemblies W of the same lot, it is only necessary to first adjust the elevating base frames 117 and 118 up and down.

  Next, the sliding base frame 107 moves toward the tire assembly W by driving the motor 108 and stops at a predetermined position. In this state, the rotation of the rotation drive roller 97 by the drive of the motor 99 causes the tire assembly W to rotate. In this way, if the rotation drive roller 97 is pressed against the outer peripheral surface of the tire assembly W and the rotation drive roller 97 is rotated to rotate the tire assembly W as a so-called rotation, the rotation means 4 can be simplified. Can be configured as a simple structure. The rotating bodies 124 and 125 are rotated by driving the drive motors 120 and 121 simultaneously with the rotation of the tire assembly W, whereby the swinging arms 133 and 134 are swung through the crank arms 128 and 129. The upper hammer 137 and the lower hammer 138 hit the tire along the movement trajectory.

  FIG. 16 is a side cross-sectional action explanatory view of the tire assembly W at the time of fitting. The upper hammer 137 and the lower hammer 138 in the state (a) move downward and upward, respectively, and hit the side surface W3 near the bead portion W5 of the tire as shown in (b). Specifically, since the upper hammer 137 and the lower hammer 138 move along the swinging locus, the side surface W3 near the bead portion W5 of the tire is directed inward in the width direction of the tire and outward in the radial direction of the tire. Strike towards. That is, since the side surface W3 near the bead portion W5 that is the hit surface is formed in an inclined shape toward the inside of the rim flange portion W4, the direction of the hit comes closer to the normal direction of the hit surface, Thereby, the striking force is efficiently transmitted to the hit surface. In response to this impact force, the bead portion W5 is once separated from (or not displaced from) the rim flange portion W4 as shown in (b), for example, sealed in a space between the bead portion W5 and the rim flange portion W4. After the entrained air is released, it fits properly around the rim flange W4 as shown in (c).

  The upper hammer 137 and the lower hammer 138 strike the same location (location of the same phase in the circumferential direction of the tire) when viewed from the rotation axis direction of the tire assembly W, and at the same time strike both side surfaces W3. . A conventional method of hitting a tire is to hit a plurality of locations on the circumference of each side surface W3 of the tire as described in Patent Document 2 described above, and in this method, around the bead portion W5 As described above, the deformation between the hitting points in the case affects each hitting point, and the deformation of the tire is dispersed to make it difficult to obtain the predetermined displacement amount of the bead portion W5. On the other hand, as in the present embodiment, a method of simultaneously hitting the upper side surface W3 with a single upper hammer 137 and a lower side surface W3 with a single lower hammer 138, that is, both side surfaces of the tire. If W3 is a method of simultaneously hitting at a single spot having the same phase in the circumferential direction of the tire, the hitting force is not affected by the deformation between a plurality of hitting spots as in the prior art, and the hitting force is Concentrate on W5. Therefore, a sufficient amount of displacement is imparted to the bead portion W5, and the bead portion W5 reliably fits around the rim flange portion W4.

  The hitting as described above is repeatedly performed by rocking while the tire assembly W rotates once, so that the bead portion W5 fits around the rim flange portion W4 around the entire circumference. In the case of using a conventional cam mechanism as a striking structure, it is necessary to enlarge the cam in order to increase the swinging width, and as a result, a drive source for driving the cam requires a large torque. On the other hand, by using a structure using a lever crank mechanism, the upper hammer 137 and the lower hammer 138 can be swung with a sufficient swing width by a driving source with a small torque. Further, since the structure does not generate much friction as compared with the cam mechanism, it is advantageous in terms of strength and wear resistance of the constituent members. Further, since noise caused by friction is greatly reduced, the work environment is improved.

  Further, as shown in FIG. 15, a plurality of pressing rollers 85 press the side surface W3 of the tire while hitting. This prevents the entire tire assembly W from swinging due to the hitting of the upper hammer 137 and the lower arm 138, so that deformation of the edge of the center hole W2 held by the chuck pawl 83a can be prevented. Since the hitting location is determined, for example, the hitting location is deviated due to the swing of the tire assembly W, and the problem that the upper hammer 137 and the lower hammer 138 hit the rim flange portion W4 is also solved. Since the pressing roller 85 presses the side surface W3 of the outer tire from the location hit by the upper hammer 137, that is, the location where the external force is applied by the fitting means 5, the pressure roller 85 is against the predetermined deformation around the bead portion W5 due to the hit. The fitting function of the bead portion W5 is not impaired.

  When the tire assembly W rotates once and the fitting operation is completed, the members relating to the rotating means 4, the fitting means 5, and the pressing means 6 move back to their original positions, and the chucking claws 83a are reduced in the diameter reducing direction in the gripping means 3. And the gripping state of the tire assembly W is released. Next, the rod 29a of the cylinder 29 shown in FIG. 11 extends to raise the roller conveyor 17, and in the ascending process, the tire assembly W is transferred from the gripping means 3 to the roller conveyor 17 in FIG. It is carried out to the roller conveyor 18 (FIG. 11) side in a subsequent process by unillustrated unloading means. Simultaneously with the carry-out, the tire assembly W that has been reserved next is carried from the carry-in station S1 to the fitting station S2, and the same fitting process is performed.

  The preferred embodiments of the present invention have been described above. However, the layout, shape, number, and the like regarding each component are not limited to those described in the drawings. For example, a conventional cam mechanism or the like may be used for a fitting method in which each side surface of a tire is hit simultaneously at a single location having the same phase in the circumferential direction of the tire.

1 is a schematic perspective view of a fitting device for a tire assembly according to the present invention. It is A arrow directional view in FIG. It is a B arrow view in FIG. It is C arrow line view in FIG. It is a plane explanatory view of the fitting device of the tire assembly concerning the present invention. It is side surface explanatory drawing of the roller conveyor which comprises a conveyance means. It is plane explanatory drawing of the roller conveyor which comprises a conveyance means. It is front operation | movement explanatory drawing around the raising / lowering means which comprises a conveying means. It is a plane action explanatory view around the clamping means constituting the conveying means. It is the external appearance perspective view which showed the structure around the clamping means. It is an external appearance perspective view of a roller conveyor. It is an external appearance perspective view which shows a rotation means. It is an external appearance perspective view which shows a press means. It is an external appearance perspective view which shows a fitting means. It is front explanatory drawing of the fitting apparatus at the time of fitting. FIG. 5 is a side cross-sectional action explanatory diagram of the tire assembly at the time of fitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fitting apparatus 2 Conveying means 3 Holding means 4 Rotating means 5 Fitting means W Tire assembly W1 Wheel W2 Center hole (center part of tire assembly)
W3 (Tire) side W4 Rim flange part W5 Bead part

Claims (2)

A tire assembly fitting apparatus comprising: gripping means for gripping a center portion of a tire assembly; rotation means for rotating the tire assembly; and fitting means for fitting a bead portion of a tire around a rim flange portion of a wheel. There,
The fitting means has a deformation means for deforming by applying an external force to the side surface of the tire,
The deforming means includes: a driving means for rotating; a crank means for converting the rotational movement of the driving means into a reciprocating movement; a swinging means for converting the reciprocating movement of the crank means into an arcuate movement; An apparatus for fitting a tire assembly, comprising: striking means for striking both sides of a tire simultaneously at a single location having the same phase in the circumferential direction of the tire by an arc motion. A fitting method for fitting a bead portion of a tire around a rim flange portion of a wheel in a tire assembly,
Stroke both sides of the tire simultaneously by a striking means that performs a reciprocating arc motion at a single location that is in the same phase in the circumferential direction of the tire,
The fitting method of a tire assembly, wherein the reciprocating arc motion of the hitting means is obtained by converting a rotational motion of a drive source via a crank mechanism .

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