JP3779678B2 - Tire uniformity machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a tire uniformity machine that inspects tire uniformity by rotating while supplying pressurized air to a tire.
[0002]
[Prior art]
  In general, the tire uniformity machine is used when the tire's upper and lower bead parts are sandwiched from both sides by the upper and lower rims, respectively, and then pressurized air is supplied into the tire to rotate the tire together with the upper and lower rims. It is configured to inspect tire uniformity. And since the tire uniformity machine configured in this way corresponds to the form of multi-product low-volume production in which various bead width tires are produced in the same factory, it is possible to inspect various bead width tires with a single device. Is desired.
[0003]
  Therefore, conventionally, an inter-rim connecting mechanism comprising a hydraulic cylinder for connecting the upper and lower rims is provided on the lower surface of the lower spindle on which the lower rim is concentrically mounted, and a hydraulic cylinder is provided on the lower surface of the inter-rim connecting mechanism. A rim width setting mechanism is provided. After the rim width setting mechanism moves the lower rim (lower spindle) together with the rim connection mechanism to match the rim width to the tire bead width, the upper and lower rims are moved by the rim connection mechanism. A configuration for fastening and fixing has been proposed (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-160643 (FIG. 1)
[0005]
[Problems to be solved by the invention]
  However, in the above conventional configuration, the rim width setting mechanism and the inter-rim connection mechanism are arranged in series below the lower spindle, so that the tire uniformity machine is increased in size in the vertical direction (the rotation axis direction of the upper and lower rims). It will be. For this reason, for example, if the height position where the tire is held by the upper and lower rims is lowered or the tire uniformity machine is lowered due to the relationship with the ceiling height, the pits are dug sufficiently deep so that the rim width setting mechanism It is necessary to accommodate the coupling mechanism. As a result, there is a problem that the equipment cost when introducing the tire uniformity machine increases. This problem becomes prominent when it is attempted to further expand the variable range of the distance between the rims in order to meet the recent demand for high-mix low-volume production.
[0006]
  Therefore, the present invention provides a tire uniformity machine capable of changing the rim width while suppressing the increase in size of the upper and lower rims in the rotation axis direction.
[0007]
[Means for Solving the Problems]
  In order to solve the above problems, a tire uniformity machine according to the invention of claim 1One rim is detachableon the other handThe spindle and the other rim are detachableThe other spindleWhenAnd a rim width adjusting mechanism that can be changed so as to correspond to the bead width of the tire, and the rim width adjusting mechanism includes the one spindle.InsideA screw shaft member rotatably provided to the other spindle, and the screw shaft member connected to the other spindle.AgainstBy rotationAgainst the one rimThe screw shaft member moves forward and backward in the rim width direction.Outer circumferenceAnd an inner cylinder member screwed onto the inner cylinder member.
[0008]
  According to the above configuration, since the rim width adjustment mechanism is provided in one spindle, the rim width adjustment mechanism of the tire uniformity machine is larger than the case where the rim width adjustment mechanism is disposed outside the spindle. It is possible to change the rim width while suppressing the shift. As a result, for example, when the tire uniformity machine is introduced so that the rotation axis direction coincides with the vertical direction, the pit for accommodating the spindle can be shallow, which is necessary when introducing the equipment. Costs can be reduced. Also, screw shaft memberThe inner cylinder memberIf it is rotated, the inner cylinder member can be moved forward and backward to adjust the rim width, so that the structure is simple. Further, since the rotation of the screw shaft member can be easily controlled using a general detection sensor or control device, for example, if the bead width of the tire is known in advance, the rim width can be automatically and easily adjusted to this bead width. Can be set.
[0009]
  The invention of claim 2 is the tire uniformity machine according to claim 1,An uneven portion formed on the inner peripheral surface of the inner cylinder member and a claw member provided inside the other spindle and having an uneven portion formed on the outer peripheral surface; It is further characterized in that it further has a mechanical lock mechanism for engaging the one spindle and the other spindle in a state of being fixed in the axial direction by engaging with the concave and convex portions of the cylindrical member.
[0010]
  Claim3InventionTire uniformity machineIsRim width adjustment mechanism capable of changing the rim width so as to correspond to the tire bead width when one spindle on which one rim is detachably connected to the other spindle on which the other rim is detachably connected WithThe rim width adjusting mechanism isA screw shaft member rotatably provided inside the one spindle, and the one spindleRim isRemovableAn outer cylinder member;An inner cylinder member that is connectable to the other spindle and is screwed to the outer periphery of the screw shaft member so as to move forward and backward in the rim width direction with respect to the outer cylinder member by rotation of the screw shaft member;A spindle drive device that rotationally drives the outer cylinder member, and a clutch mechanism that can switch connection and release between the outer cylinder member and the screw shaft member.
[0011]
  According to said structure, a spindle drive device can be combined with the use which adjusts the rim width | variety of a spindle drive device by switching a clutch mechanism, and the use which rotates a rim | limb and inspects a tire.
[0012]
  Claim4The invention of claim3The screw shaft member and the inner cylinder member are inserted into the outer cylinder member, and a keyway is formed in the outer rim surface of the inner cylinder member in the rim width direction. In the outer cylinder member, a guide key is movably fitted in the key groove.
[0013]
  According to said structure, the movement of the inner cylinder member of the rim width direction by rotation of a screw shaft member is realizable with a simple structure.
[0014]
  Claim5The invention of claim3Or4The rim width adjusting mechanism includes a brake mechanism capable of inhibiting rotation of the screw shaft member.
[0015]
  According to said structure, since a screw shaft member can be stopped reliably, a rim width | variety can be adjusted correctly.
[0016]
  Claim6The invention of claim3Or5It is a tire uniformity machine of any one of these, Comprising: The rotation detection mechanism which each detects the rotation condition of the said outer cylinder member and the said screw shaft member, The function which monitors an operation state based on each said rotation condition It has the control apparatus provided with.
[0017]
  According to said structure, the malfunctioning at the time of rim width adjustment and a tire test | inspection is detectable.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
  An embodiment of the present invention will be described below with reference to FIGS.
  As shown in FIG. 2, the tire uniformity machine according to the present embodiment includes an upper rim 2 that holds the upper bead portion of the tire 1 and a lower rim 3 that holds the lower bead portion of the tire 1. . The upper rim 2 is detachably provided at the tip (lower end) of the upper spindle 4. On the other hand, the lower rim 3 is detachably provided at the tip (upper end) of the lower spindle 5. Both spindles 4 and 5 have the upper rim 2 and the lower rim 3 opposed to each other, and the axial centers of both rims 2 and 3 are aligned on the same straight line.
[0019]
  The upper spindle 4 and the lower spindle 5 are provided on the ceiling frame 6 and the base frame 8, respectively. These frames 6 and 8 are supported by a plurality of vertical frames 7 so that the ceiling frame 6 is horizontally arranged at the upper position and the base frame 8 is horizontally arranged at the lower position. Each vertical frame 7 is erected in the vertical direction from the site surface 9. The site surface 9 is provided with a pit 10 in the central portion of the area surrounded by the vertical frame 7.
[0020]
  The pit 10 can accommodate the lower part of the lower spindle 5. The lower spindle 5 includes a lower rim holding mechanism 11 that detachably holds the lower rim 3, a first elevating mechanism 12 that elevates and lowers the lower rim holding mechanism 11, and elevates and lowers the lower rim holding mechanism 11 together with the first elevating mechanism 12. And a second lifting mechanism 13. The second elevating mechanism 13 is provided in the vertical direction by the horizontal support member 14 that supports the lower rim holding mechanism 11, the nut member 15 provided at the base of the horizontal support member 14, and the nut member 15 being screwed together. A ball screw member 16 and a ball screw drive motor 17 that rotationally drives the ball screw member 16 are provided.
[0021]
  The second raising / lowering mechanism 13 configured in this manner raises and lowers the nut member 15 by rotating the ball screw member 16 at a desired direction and angle by the ball screw drive motor 17, and is connected to the nut member 15. The first elevating mechanism 12 can be positioned at a desired height position via the support member 14. Further, the first elevating mechanism 12 can move the lower rim holding mechanism 11 to the tire holding position.
[0022]
  The horizontal support member 14 in the second lifting mechanism 13 supports the first lifting mechanism 12 in the vertical direction. The first elevating mechanism 12 is arranged in parallel to the side of the second elevating mechanism 13. As a result, the first elevating mechanism 12 and the second elevating mechanism 13 are made shorter than the case where the maximum distance for raising and lowering the lower rim holding mechanism 11 by both the mechanisms 12 and 13 is realized by the stroke amount of one hydraulic cylinder. The required depth of the pit 10 is reduced.
[0023]
  Said 1st raising / lowering mechanism 12 consists of a hydraulic cylinder arrange | positioned so that the cylinder rod 12a may be located in the upper side. The tip (upper end) of the cylinder rod 12 a is connected to the lower rim holding mechanism 11. The first elevating mechanism 12 enables the tire 1 to be attached / detached by the rims 2 and 3 by the forward / backward movement of the cylinder rod 12a when the second elevating mechanism 13 is raised to the tire attaching / detaching position.
[0024]
  As described above, the lower rim holding mechanism 11 that is lifted and lowered by both the lifting mechanisms 12 and 13 has a lower rim support member 20 that holds the lower rim 3 as shown in FIG. Here, FIG. 1 shows a state in which the rims 2 and 3 are largely opened across the rotation axis S (right side in the figure) and a state in which the rims 2 and 3 are slightly opened (left side in the figure). The lower rim support member 20 was formed on the lower end side of the recess 20a formed at the center of the upper end surface, the sliding side peripheral surface 20b formed on the outer peripheral wall of the upper end portion, and the sliding side peripheral surface 20b. And a flange portion 20c. The concave portion 20a and the sliding side peripheral surface 20b support a mechanical lock mechanism 30 and an alignment mechanism 50 described later, respectively. The flange portion 20c is formed to support the lower surface on the inner peripheral side of the lower rim 3.
[0025]
  Further, the lower rim support member 20 is surrounded by the outer cylinder support 22 on the side peripheral surface below the flange portion 20c. The outer cylinder support body 22 rotatably supports the lower rim support member 20 and the cylinder rod 12a of the first elevating mechanism 12 so as to raise and lower the lower rim holding mechanism 11 via the outer cylinder support body 22. It is supported by. An air supply hole 22a is formed in the lower part of the outer cylinder support 22 from the outer peripheral surface to the inner peripheral surface. The upper end portion of the air pipe 26 is connected to the air supply hole 22a. As shown in FIG. 2, the air pipe 26 hangs down from the lower rim holding mechanism 11 along the first elevating mechanism 12 and is supported by the horizontal support member 14 so as to be movable up and down. Has been. Note that the lower end of the air pipe 26 is connected to an air supply measure via an air hose (not shown).
[0026]
  Also. As shown in FIG. 1, inside the lower rim support member 20, a rod insertion hole 20d coinciding with the rotation axis S (the axis of the lower rim 3) is formed, and air is introduced along the rod insertion hole 20d. A supply hole 20e is formed. The air supply hole 20e has an upper end opened at a position above the flange portion 20c of the lower rim support member 20, and a lower end communicated with the air supply hole 22a of the outer cylinder support 22, whereby the above-described air supply device Can be supplied into the tire 1 held by the rims 2 and 3.
[0027]
  On the other hand, the rod member 24 is inserted into the rod insertion hole 20d so as to be movable up and down. The lower end portion of the rod member 24 is rotatably connected to the cylinder rod 23a of the rod elevating cylinder 23. The rod elevating cylinder 23 is fixed to the lower surface of the outer cylinder support 22. The rod raising / lowering cylinder 23 moves the rod member 24 relative to the lower rim support member 20 in the vertical direction.
[0028]
  The upper end portion of the rod member 24 is connected to the mechanical lock mechanism 30. The mechanical lock mechanism 30 includes a conical inclined member 31 whose side peripheral surface is inclined, a claw member 32 whose inner peripheral surface is slidably contacted with the side peripheral surface of the inclined member 31, and a claw member 32 having a radius. And a claw support 33 that is movably supported in the direction. The nail | claw member 32 has the uneven | corrugated | grooved part 32a in the outer peripheral surface. The uneven portion 32 a of the claw member 32 can be engaged with the uneven portion 41 a formed on the inner cylinder member 41 of the upper spindle 4. Thereby, the mechanical lock mechanism 30 can move the claw member 32 forward and backward in the radial direction along the side peripheral surface of the inclined member 31 by raising and lowering the inclined member 31. The mechanical lock mechanism 30 has the upper spindle 4 and the lower spindle 5 fixed in the vertical direction by engaging the concave and convex portion 32a with the concave and convex portion 41a of the inner cylinder member 41 of the upper spindle 4 by the advancement of the claw member 32. To be connected to.
[0029]
  An alignment mechanism 50 is provided on the lower side of the mechanical lock mechanism 30 in the outer circumferential direction. The alignment mechanism 50 includes a collet member 51 that aligns the axis of the lower rim support member 20 with the axis of the inner cylinder member 41, and a plurality of urging mechanisms 52 that urge the collet member 51 upward. Yes.
[0030]
  As shown in FIG. 6, the collet member 51 is inserted into the sliding side peripheral surface 20 b of the lower rim support member 20, and the shaft core is the shaft core of the lower rim support member 20, that is, the lower rim 3. It is provided so as to coincide with the axis of the (lower spindle 5). The collet member 51 has an elastic force, and the outer peripheral surface 51a is inclined so that the outer diameter increases from the upper side to the lower side. In addition, a plurality of slits 51 b are formed at equal intervals on the outer peripheral surface 51 a of the collet member 51 in the vertical direction. These slits 51b are formed so that the open ends are alternately positioned, and the inner diameter of the collet member 51 can be easily and greatly reduced by the pressing force in the inner circumferential direction.
[0031]
  As shown in FIG. 7, the collet member 51 is fitted to the lower end portion of the inner cylinder member 41. The inner cylinder member 41 has an inner peripheral inclined surface 41b having an inner diameter increased from the upper side to the lower side on the inner peripheral wall of the lower end portion. The inner peripheral inclined surface 41b contracts the collet member 51 by applying a pressing force in the inner peripheral direction to the outer peripheral surface 51a of the collet member 51 when the collet member 51 is fitted to the inner cylindrical member 41. It is designed to make the diameter. As a result, the alignment mechanism 50 has the collet member 51 elastically reduced in diameter and tightens the entire circumference of the sliding side peripheral surface 20b so that the axis of the lower rim support member 20 matches the axis of the inner cylinder member 41. It is designed to demonstrate the alignment function.
[0032]
  The collet member 51 is urged upward by an urging mechanism 52. The urging mechanisms 52 are arranged at equal intervals at the base portion of the flange portion 20 c of the lower rim support member 20. The urging mechanism 52 is formed in a bolt shape, and includes a push-up member 53 that contacts the lower surface of the collet member 51 and a spring member 54 that urges the push-up member 53 upward. The urging force of the spring member 54 is set to be larger than the frictional force between the collet member 51 and the sliding side peripheral surface 20b of the lower rim support member 20 when the alignment function is exhibited. As a result, when the lower spindle 5 is lowered while the inner cylinder member 41 reduces the diameter of the collet member 51 and exhibits the alignment function, the collet member 51 is pushed up to be positioned with the inner cylinder member 41. By maintaining the relationship constant, a decrease in the alignment function is prevented.
[0033]
  Further, the biasing force of the spring member 54 is a value that does not change the positional relationship between the collet member 51 and the inner cylinder member 41 even when a lateral load is applied when the drum 102 of FIG. 2 is pressed against the tire 1 in an inflation state. Is set to As a result, even when the tire 1 is inspected, the alignment function can be reliably exhibited.
[0034]
  The inner cylinder member 41 is accommodated in an outer cylinder member 42 as shown in FIG. The inner cylinder member 41 and the outer cylinder member 42 constitute a part of the rim width adjusting mechanism 58 together with a screw shaft member 45 described later. The outer cylinder member 42 includes a flange portion 42a on the lower outer peripheral portion so as to function as an upper rim holding mechanism. An upper rim detection sensor 28 fixed to the ceiling frame 6 is disposed outside the flange portion 42a.
[0035]
  Further, the inner cylinder member 41 has the above-described concavo-convex portion 41a and the inner peripheral inclined surface 41b formed on the inner peripheral surface, and a lateral portion 41c formed therein. The horizontal portion 41 c is set so that the concave and convex portion 32 a of the claw member 32 faces the concave and convex portion 41 a of the inner cylinder member 41 when contacting the upper surface of the claw support 33. A key groove 41 e is formed on the outer peripheral surface of the inner cylinder member 41 in the vertical direction. A guide key 43 is movably fitted in the keyway 41e. The guide key 43 is fixed to the outer cylinder member 42 so as to prohibit the rotation of the inner cylinder member 41 with respect to the outer cylinder member 42.
[0036]
  Furthermore, a female screw portion 41 d is formed at the upper end portion of the inner cylinder member 41. The female screw portion 41 d is screwed into a male screw portion 45 a formed at the lower portion of the screw shaft member 45. As shown in FIG. 4, the screw shaft member 45 is disposed so that the shaft core coincides with the rotation axis S, and the upper portion thereof is rotatably supported by the spindle cylinder member 46. The spindle cylinder member 46 is rotatably supported by the ceiling frame 6, and the lower end portion is connected to the upper end portion of the outer cylinder member 42.
[0037]
  A clutch mechanism 47 is provided at the upper end of the screw shaft member 45. The clutch mechanism 47 can be switched between connection and release between the screw shaft member 45 and the spindle cylinder member 46. Specifically, the clutch mechanism 47 is connected in a state where the screw shaft member 45 and the spindle cylinder member 46 are fixed in the ON state, so that both the members 45 and 46 can rotate integrally. On the other hand, the clutch mechanism 47 releases the connection between the screw shaft member 45 and the spindle cylinder member 46 in the OFF state, and allows the members 45 and 46 to rotate independently.
[0038]
  Further, a brake disk 48 is provided at the upper end of the screw shaft member 45. The brake disc 48 can be clamped by a brake device 49. The brake device 49 is fixed to the ceiling frame 6 via a support member (not shown). When the rotation of the screw shaft member 45 is prohibited, the brake device 49 is turned on to pinch the brake disk 48, and when the rotation of the screw shaft member 45 is permitted, the brake device 49 is turned off. 48 is opened.
[0039]
  The ceiling frame 6 is provided with a spindle driving device 56. The spindle driving device 56 is connected to the spindle cylinder member 46 via the drive belt 57, and can rotate the spindle cylinder member 46 at an arbitrary direction and speed. The upper spindle 4 having the inner cylinder member 41, the outer cylinder member 42, the screw shaft member 45, and the spindle cylinder member 46 in the axial direction in this way makes the clutch mechanism 47 ON and the brake device 49 OFF. However, by operating the spindle driving device 56, all the members 41, 42, 45, and 46 in the axial direction can be integrally rotated. Further, the upper spindle 4 operates the spindle driving device 56 while turning the clutch mechanism 47 OFF and the brake device 49 ON, and rotates the inner cylinder member 41 with respect to the fixed screw shaft member 45. The inner cylinder member 41 can be moved back and forth (up and down) with respect to the outer cylinder member 42.
[0040]
  In the upper spindle 4, the rotation detection mechanism 60 can detect the rotation direction, rotation speed, and rotation angle of the screw shaft member 45 and the spindle cylinder member 46. As shown in FIG. 5, the rotation detection mechanism 60 includes a first pulley 63 connected to the screw shaft member 45 via the first belt 61 and a first pulley 63 connected to the spindle cylinder member 46 via the second belt 62. 2 pulleys 64. The first pulley 63 is connected to a first gear 67 in the housing 65 via a first rotating shaft 66 that is rotatably supported by the housing 65.
[0041]
  On the other hand, the second pulley 64 is connected to a second gear 69 in the housing 65 via a second rotating shaft 68 that is rotatably supported by the housing 65, and a third pulley outside the housing 65. The pulley 70 is connected. The third pulley 70 is connected to a fourth pulley 72 via a third belt 71, and the fourth pulley 72 is connected to a first rotation detector 74 formed of an incremental encoder via a third rotating shaft 73. It is connected. Accordingly, the first rotation detector 74 transmits the rotation of the spindle cylinder member 46 of FIG. 4 via the second belt 62, the third pulley 70, the fourth pulley 72, etc. The number of rotations (rotation angle) can be detected and output as an angle detection signal.
[0042]
  The second gear 69 in the housing 65 that rotates together with the first rotation detector 74 is meshed with the first bevel gear 76 via the fourth gear 75. The first bevel gear 76 is rotatably provided on a shaft member 77 that is rotatably supported by the housing 65. A fixed member 78 is fixed to the shaft member 77, and a second bevel gear 79 is rotatably provided across the fixed member 78. The second bevel gear 79 is meshed with the above-described first gear 67 to which the rotation of the screw shaft member 45 in FIG. 4 is transmitted. The first bevel gear 76 and the second bevel gear 79 are meshed with the planetary gear 80. The planetary gear 80 is rotatably supported on the side surface of the fixed member 78.
[0043]
  Accordingly, when the spindle cylinder member 46 of FIG. 4 is rotated in a state where the first gear 67 is fixed by stopping the screw shaft member 45 of FIG. 4, the second bevel gear 79 meshed with the first gear 67. Since the planetary gear 80 rotates around the shaft member 77 via the first bevel gear 76 when the second gear 69 rotates due to the rotation of the spindle cylinder member 46 in FIG. The member 77 rotates. Further, when the spindle cylinder member 46 of FIG. 4 is rotated while the first gear 67 is rotated by the rotation of the screw shaft member 45 of FIG. 4, the second bevel gear 79 meshed with the first gear 67 is also generated. Since it rotates in the same direction, when the 2nd gear 69 rotates by rotation of the spindle cylinder member 46 of FIG. 4, as a result of the 1st bevel gear 76 rotating in a fixed position, it will be in the state which the shaft member 77 stopped.
[0044]
  A fifth pulley 81 is provided at one end of the shaft member 77. The fifth pulley 81 is connected via a fourth belt 82 and a fifth pulley 83 to a second rotation detector 84 made up of an absolute encoder. The second rotation detector 84 can detect the origin of the spindle cylinder member 46 and output it as an origin detection signal only when the screw shaft member 45 of FIG. 4 is stopped and the spindle cylinder member 46 is rotating. It has become.
[0045]
  The rotation detection mechanism 60 configured as described above is connected to a control device (not shown). The control device includes a calculation unit, a storage unit, an input / output unit, and the like. Various data areas such as a tire data area, a rim width data area, and a test data area are formed in the storage unit. The tire data area stores data such as the type of the tire 1, the bead width of each type, and the rotation speed corresponding to each type. The rim width data area stores rim width data that is an interval between the upper rim 2 and the lower rim 3. The test data area stores inspection data obtained by rotating the tire 1.
[0046]
  The storage unit also stores a control program for controlling the operation of the tire uniformity machine. This control program obtains the bead width of the tire 1 based on the product type data input by operating the input / output unit, and based on the origin detection signal and the angle detection signal so that the rim width corresponds to this bead width. Rim width setting function for moving the inner cylinder member 41 forward and backward with respect to the outer cylinder member 42, and inspection of rotation speed and number of rotation corresponding to the product type data based on an inspection command by operating the start button of the input / output unit An inspection function for performing an inspection based on the angle detection signal so as to meet the specifications, an abnormal operation detection function for confirming the presence or absence of an abnormal operation based on the origin detection signal and the angle detection signal, and the rims 2 and 3 for the tire 1 after the inspection. Various functions such as a loading / unloading function for mounting the tire 1 before inspection on the rims 2 and 3 are also provided.
[0047]
  The rotation detection mechanism 60 that outputs the origin signal and the angle detection signal to the control device as described above is provided on the ceiling frame 6 as shown in FIG. An intermediate frame 85 is provided horizontally at a substantially central portion of the vertical frame 7 that supports the ceiling frame 6. The intermediate frame 85 is provided with a pair of tire mounting tables 86 and 86 symmetrically. These tire mounting bases 86 and 86 can be expanded and contracted according to the outer diameter of the rims 2 and 3, and are adjusted to be slightly wider than the rims 2 and 3. The tire 1 can be attached and detached.
[0048]
  In addition, tire transport mechanisms 87 and 87 are provided on the outer sides of the respective tire mounting tables 86 and 86, respectively. As shown in FIG. 3, the tire transport mechanism 87 includes gripping members 88 and 88 that grip the tread portion of the tire 1, and rotating devices 89 and 89 that rotate the gripping members 88 and 88 in the tire 1 direction. Two sets of gripping mechanisms 90 are provided in the transport direction (horizontal direction), and a transport cylinder 91 that moves the grip mechanisms 90 and 90 forward and backward in the transport direction is provided. A carry-in roller 92 and a carry-out roller 93 are respectively provided before and after the arrangement direction of the upper spindle 4 and the lower spindle 5 in the conveyance direction. The above-described tire transport mechanism 87 advances the transport cylinder 91 to grip the tire 1 before the inspection on the carry-in roller 92 with one gripping mechanism 90 and to inspect at the inspection position (between the rims 2 and 3). By gripping the rear tire 1 with the other gripping mechanism 90 and retracting the transport cylinder 91, the tire 1 before the inspection can be moved to the inspection position and the tire 1 after the inspection can be moved onto the carry-out roller 93. It is possible.
[0049]
  Further, as shown in FIG. 2, a measuring mechanism 97 is provided on the side of the lower end portion of the upper spindle 4 between the intermediate frame 85 and the ceiling frame 6. The measuring mechanism 97 includes a drum 102 that simulates an inspection road surface, and a drum 102 that rotatably supports the drum 102 so that the rotation axis of the drum 102 is parallel to the rotation center of the tire 1 (upper and lower rims). A support 99, a load cell (not shown) that is provided on the axis of the drum 102 and measures the uniformity (uniformity) of the tire 1 through the drum 102, and a ball jack 100 that presses the drum 102 against the tire 1 with a predetermined pressing force. And.
[0050]
  In the above configuration, the operation of the tire uniformity machine will be described.
[0051]
(Data input process)
  First, by operating, for example, a keyboard of an input / output unit in a control device (not shown), the type data and quantity data of the tire 1 to be inspected next are input by the operator. The product type data is used for collecting specifications such as the bead width of the tire 1 corresponding to the product data stored in advance. Thereafter, it is determined whether or not the rim width of the upper and lower spindles 4 and 5 corresponds to the bead width of the tire 1 to be inspected. If the rim width does not correspond to the bead width, a rim width adjusting step is executed. The When the setting of the rim width is completed, an inspection process for performing uniformity measurement of the tire 1 is executed.
[0052]
(Rim width adjustment process)
  When the rim width of the upper and lower spindles 4 and 5 does not correspond to the bead width of the tire 1, this step is executed. First, as shown in FIG. 4, the positional relationship between the outer cylinder member 42 and the inner cylinder member 41 that set the current rim width is confirmed. Then, after the movement amount (lifting amount) of the inner cylinder member 41 necessary for installation at the next rim width is obtained based on this positional relationship, the rotation direction and rotation of the inner cylinder member 41 that becomes this movement amount A number is required.
[0053]
  Next, the clutch mechanism 47 is operated so as to be in an OFF state, the connection between the screw shaft member 45 and the spindle cylinder member 46 is released, and the brake device 49 is operated in an ON state so that the brake disc 48 is clamped. Thus, the rotation of the screw shaft member 45 is prohibited. As a result, only the spindle cylinder member 46 can be rotated.
[0054]
  Next, the spindle driving device 56 is operated, and the spindle cylinder member 46 is rotated in a predetermined direction. Thereby, the outer cylinder member 42 connected to the spindle cylinder member 46 rotates. Further, since the outer cylinder member 42 and the inner cylinder member 41 are connected to be movable only in the vertical direction via the guide key 43, the inner cylinder member 41 also rotates together with the outer cylinder member 42. As a result, when the inner cylinder member 41 rotates around the fixed screw shaft member 45, the female screw portion 41d of the inner cylinder member 41 is engaged with the male screw portion 45a of the screw shaft member 45 in the vertical direction. Moving.
[0055]
  When the spindle cylinder member 46 is rotated as described above, this rotation is transmitted to the rotation detection mechanism 60 via the second belt 62. As a result, as shown in FIG. 5, the third pulley 70 connected to the second belt 62 via the second pulley 64 rotates, and the first rotation detector 74 rotates, whereby the spindle cylinder member 46. Is output to a control device (not shown) as an angle detection signal.
[0056]
  The second gear 69 connected to the second belt 62 via the second pulley 64 also rotates, and the first bevel gear 76 rotates. At this time, as described above, since the screw shaft member 45 of FIG. 4 is in a fixed state, the first gear 67 coupled to the screw shaft member 45 via the first belt 61 and the first pulley 63 and The second bevel gear 79 is maintained in a fixed state. Accordingly, as a result of the planetary gear 80 rotating around the shaft member 77 via the first bevel gear 76, the shaft member 77 rotates. As a result, the second rotation detector 84 rotates via the fifth pulley 81, and an origin detection signal is output from the second rotation detector 84 to a control device (not shown).
[0057]
  The angle detection signal and the origin signal output to the control device are obtained from the phases of both signals, and it is determined whether or not the rim width adjustment is accurately executed based on the change in the phase. Further, the reference position is set based on the origin signal, and the rotational speed of the spindle cylinder member 46 is obtained based on at least the angle detection signal, and the movement amount (lifting amount) of the inner cylinder member 41 is determined based on this rotational speed. Is detected. When the target movement amount is reached, as shown in FIG. 4, the spindle cylinder member 46 stops rotating due to the stop of the spindle driving device 56.
[0058]
(Inspection process)
  When the rim width corresponds to the tire 1 to be inspected, this process is executed. First, as shown in FIG. 2, the lower rim holding mechanism 11 together with the first lifting mechanism 12 is set to a predetermined height position by the second lifting mechanism 13. Thereafter, the first elevating mechanism 12 is lowered, and the upper surface of the lower rim 3 is positioned below the tire mounting tables 86 and 86.
[0059]
  Next, as shown in FIG. 3, the pre-inspection tire 1 mounted on the carry-in roller 92 is gripped by the gripping mechanism 90 and transferred to the tire mounting tables 86 and 86 positioned between the upper and lower rims 2 and 3. It will be posted. Thereafter, as shown in FIG. 4, the lower rim 3 is raised by the first elevating mechanism 12 to hold the lower bead portion of the tire 1. The lower rim 3 is further raised while holding the tire 1, the upper bead portion of the tire 1 is mounted on the upper rim 2, and the upper spindle 4 and the lower spindle 5 having the upper and lower rims 2 and 3 are mounted. Are connected.
[0060]
  That is, as shown in FIG. 1, when the lower rim holding mechanism 11 of the lower spindle 5 is raised, the tip of the lower rim support member 20 is inserted into the inner cylinder member 41. Then, as shown in FIG. 7, the collet member 51 fitted into the sliding side peripheral surface 20 b of the lower rim support member 20 abuts on the inner peripheral inclined surface 41 b of the inner cylinder member 41, and the lower rim support member 20 The entire outer peripheral surface 51a of the collet member 51 is pressed in the inner peripheral direction by the inner peripheral inclined surface 41b of the inner cylinder member 41 as it rises. As a result, the collet member 51 is aligned so that the axial center of the inner cylinder member 41 coincides with the axial center of the inner cylinder member 41 while reducing the diameter.
[0061]
  At this time, the collet member 51 is elastically reduced in diameter and is urged upward from the urging mechanism 52 and is positioned in the upper portion. Therefore, even when the lower rim support member 20 is rapidly raised and fitted, the collet member 51 is unlikely to be damaged because the elastic collet member 51 has a diameter reducing operation and the biasing mechanism 52 functions as a cushion. It has become a thing. Further, when the collet member 51 is fitted to the inner cylinder member 41 due to the difference between the outer diameter of the upper end portion of the collet member 51 and the inner diameter of the lower end portion of the inner peripheral inclined surface 41b of the inner cylinder member 41, the collet member 51 is large in the radial direction. A gap occurs. Therefore, the collet member 51 can be reliably fitted to the inner cylinder member 41 without making each member with high processing accuracy as in the prior art, and the position adjustment for raising the lower rim holding mechanism 11 is possible. Even if the capacity is insufficient or the ascending speed is high, the collet member 51 can be fitted to the inner cylinder member 41 reliably and without being damaged.
[0062]
  When the above-described alignment operation is performed by the alignment mechanism 50 including the collet member 51 and the biasing mechanism 52, the mechanical lock mechanism 30 performs the fixing operation in the axial direction inside the inner cylinder member 41. Is done. That is, when the upper end surface of the mechanical lock mechanism 30 is in contact with the lateral portion 41 c, the uneven portion 32 a of the claw member 32 is opposed to the uneven portion 41 a of the inner cylinder member 41. Then, as shown in FIG. 1, the inclined member 31 is raised by the rod lifting cylinder 23 via the rod member 24, and the claw member 32 is pushed out in the outer peripheral direction by the rising of the inclined member 31, whereby the unevenness of the claw member 32. The portion 32 a is fitted to the concave and convex portion 41 a of the inner cylinder member 41. As a result, the upper spindle 4 and the lower spindle 5 are fixed in the axial direction by the mechanical lock mechanism 30.
[0063]
  Next, as shown in FIG. 4, the brake device 49 is turned off to release the brake disk 48 and the clutch mechanism 47 is turned on to fix the spindle cylinder member 46 and the screw shaft member 45 to each other. Linked to the state. Further, as shown in FIG. 1, pressurized air of a predetermined pressure is supplied to the tire 1, and the tire 1 is in an inflation state.
[0064]
  When the tire 1 is in an inflation state, the reaction force of the tire 1 acts to separate the upper and lower rims 2 and 3 (upper and lower spindles 4 and 5). Therefore, if there is a play in the axial direction between the upper and lower spindles 4 and 5, the lower rim support member 20 of the lower spindle 5 descends and the two spindles 4 and 5 are separated from each other. . At this time, since the collet member 51 provided on the lower rim support member 20 is urged upward by the urging mechanism 52, even if the lower rim support member 20 is lowered, the collet member 51 is the inner cylinder member. It remains in the position pressed by the inner peripheral inclined surface 41b of 41. Thereby, the alignment function by pressing the collet member 51 with the inner peripheral inclined surface 41b is maintained.
[0065]
  Further, as shown in FIG. 1, the upper spindle 4 and the lower spindle 5 are fixed in the axial direction by a mechanical lock mechanism 30. Therefore, even if the reaction force of the tire 1 is very large, the distance between the upper and lower spindles 4 and 5 is not separated more than the amount of play. Further, since the mechanical lock mechanism 30 is used for fixing the upper and lower spindles 4 and 5 in the axial direction, the upper and lower spindles 4 and 5 are fixed only by the hydraulic cylinder of the first elevating mechanism 12. Parts and mechanisms such as the first lifting mechanism 12 that lifts and presses the lower spindle 5 can be reduced in size.
[0066]
  Thereafter, the drum 102 is pressed against the tire 1 with a predetermined pressing force. In this case, the pressing force (lateral load) applied to the tire 1 by the drum 102 acts so as to push down the collet member 51, but the collet member 51 is pushed up by a biasing force higher than the biasing mechanism 52 pushes down. Therefore, the alignment function by the collet member 51 is maintained.
[0067]
  Next, as shown in FIG. 4, the spindle driving device 56 is operated and the spindle cylinder member 46 is rotated, whereby the screw shaft member 45, the inner cylinder member 41, and the outer cylinder member 42 are rotated. As a result, the lower spindle 5 including the lower rim support member 20 connected by the alignment mechanism 50 and the mechanical lock mechanism 30 rotates. Then, as shown in FIG. 2, the tire 1 rotates and the drum 102 is rotated and vibrated, whereby the uniformity of the tire is measured.
[0068]
  When the spindle cylinder member 46 is rotated as described above, this rotation is transmitted to the rotation detection mechanism 60 via the second belt 62. As a result, as shown in FIG. 5, the third pulley 70 connected to the second belt 62 via the second pulley 64 rotates, and the first rotation detector 74 rotates, whereby the spindle cylinder member 46. Is output to a control device (not shown) as an angle detection signal.
[0069]
  The second gear 69 connected to the second belt 62 via the second pulley 64 also rotates, and the first bevel gear 76 rotates. At this time, as described above, since the screw shaft member 45 of FIG. 4 is rotated together with the spindle cylinder member 46, the first shaft 61 and the first pulley 63 connected to the screw shaft member 45 via the first belt 61 are used. The gear 67 and the second bevel gear 79 are rotated at the same speed as the first bevel gear 76. Accordingly, the planetary gear 80 receives the rotation of the first bevel gear 76 and the second bevel gear 79 and rotates at the same position, so that the shaft member 77 is stopped. As a result, since the second rotation detector 84 is maintained in a stopped state, the origin detection signal is not output from the second rotation detector 84.
[0070]
  When the angle detection signal is output to the control device, the control device obtains the rotational speed and rotation speed of the tire 1 based on the angle detection signal and specifies the positional relationship between the measured value of uniformity and the tire 1. Further, the control device monitors the output state of the origin signal, and when the origin signal is input, notifies the operator that an abnormality has occurred in the clutch mechanism 47 and the like of FIG.
[0071]
  When the inspection of the tire 1 is completed as described above, as shown in FIG. 2, an operation opposite to the above-described operation is performed, and the inspected tire 1 is moved to the tire mounting bases 86 and 86 by lowering the lower rim 3. And the lower rim 3 is separated from the tire 1. Then, as shown in FIG. 3, the tire 1 before the inspection on the carry-in roller 92 and the tire 1 after the inspection between the upper and lower rims 2 and 3 are respectively gripped by the gripping mechanisms 90 and 90, and the tire before the inspection 1 is transferred between the upper and lower rims 2 and 3, and the inspected tire 1 is transferred onto the carry-out roller 93. Then, the next inspection of the tire 1 is repeated.
[0072]
  As described above, the tire uniformity machine according to the present embodiment is configured so that the rim width of the upper and lower rims 2 and 3 when the upper and lower spindles 4 and 5 are connected to each other is the bead width of the tire 1 as shown in FIG. The rim width adjusting mechanism 58 can be changed to correspond to the upper rim 4 (one spindle).InsideThe screw shaft member 45 is rotatably connected to the lower spindle 5 (the other spindle).AgainstBy rotationFor upper rim 2The screw shaft member 45 is moved forward and backward in the rim width direction.Outer circumferenceIt has the structure which has the inner cylinder member 41 screwed together.
[0073]
  In the present embodiment, as shown in FIG. 2, the tire uniformity machine that inspects the tire 1 by placing it horizontally and sandwiching it from above and below has been described. Therefore, for convenience of explanation, the upper and lower spindles 4 and 5 and the upper and lower spindles Although expressed as the rims 2 and 3, the present invention is not limited to this, and can be applied to a tire uniformity machine in which the tire 1 is arranged and inspected in an arbitrary direction. Accordingly, the upper and lower spindles 4 and 5 and the upper and lower rims 2 and 3 can be arranged in an arbitrary direction such as a horizontal direction. In the present embodiment, the case where the lower spindle 5 is moved to the upper spindle 4 is described. However, the present invention is not limited to this, and at least one of the upper and lower spindles 4 and 5 is moved. Anything is fine. Further, the spindle moving mechanism may be composed of one hydraulic cylinder 103 as shown in FIG.
[0074]
  According to the above configuration, since the rim width adjusting mechanism 58 is provided in the upper spindle 4, for example, compared with a case where a rim width adjusting mechanism such as a hydraulic cylinder is disposed below the lower spindle 5, the tire 1 uniformity. The rim width can be changed while suppressing an increase in the size of the upper and lower rims 2 and 3 in the rotational axis direction of the machine. Thereby, for example, when the tire 1 uniformity machine is introduced so that the rotation axis direction coincides with the vertical direction, the pit 10 for accommodating the lower spindle 5 is shallowed as shown in FIG. Therefore, the cost required for introducing the equipment can be suppressed. Further, if the screw shaft member 45 is rotated, the inner cylinder member 41 can be moved back and forth to adjust the rim widths of the upper and lower rims 2 and 3, so that the structure is simple. Furthermore, since the rotation of the screw shaft member 45 can be easily controlled using a general detection sensor or control device, for example, if the bead width of the tire 1 is known in advance, the rim width is automatically set to this bead width. It can be set easily.
[0075]
  Further, as shown in FIG. 1, the tire uniformity machine of the present embodiment is provided with an uneven portion 41a formed on the inner peripheral surface of the inner cylinder member 41 and an inner portion of the lower spindle 5, and an uneven portion 32a on the outer peripheral surface. The upper spindle 4 and the lower spindle 5 are connected in a state of being fixed in the axial direction by engaging the uneven portion 32a of the claw member 32 with the uneven portion 41a of the inner cylinder member 41. The mechanical lock mechanism 30 is further provided.
[0076]
  In addition, the rim width adjusting mechanism 58 in the present embodiment is arranged as shown in FIG.A screw shaft member 45 rotatably provided inside the spindle 4;Upper rim 2RemovableAn outer cylinder member 42;An inner cylinder member 41 that is connectable to the lower spindle 5 and is screwed to the outer periphery of the screw shaft member 45 so as to move forward and backward in the rim width direction with respect to the outer cylinder member 42 by rotation with respect to the screw shaft member 45;The spindle driving device 56 that rotationally drives the outer cylinder member 42 and a clutch mechanism 47 that can switch the connection and release of the connection between the outer cylinder member 42 and the screw shaft member 45 are provided.
[0077]
  According to the above configuration, the spindle driving device 56 can be used both for the purpose of adjusting the rim width of the spindle driving device 56 by switching the clutch mechanism 47 and for the purpose of inspecting the tire 1 by rotating the rim.
[0078]
  Furthermore, as shown in FIG. 1, the rim width adjusting mechanism 58 in the present embodiment includes a screw shaft member 45 and an inner cylinder member 41 inserted into the outer cylinder member 42, and is arranged on the outer peripheral surface of the inner cylinder member 41. A key groove 41e is formed in the rim width direction, and a guide key 43 is movably fitted to the outer cylinder member 42 in the key groove 41e. Thereby, the movement of the inner cylinder member 41 in the rim width direction by the rotation of the screw shaft member 45 can be realized with a simple configuration.
[0079]
  Further, as shown in FIG. 4, the rim width adjusting mechanism 58 in the present embodiment is configured to include a brake disk 48 and a brake device 49 (brake mechanism) that can inhibit the rotation of the screw shaft member 45. . Thereby, since the screw shaft member 45 can be stopped reliably, the rim width can be adjusted accurately.
[0080]
  In addition, the tire uniformity machine in the present embodiment includes a rotation detection mechanism 60 that detects rotation states of the outer cylinder member 42 and the screw shaft member 45 and outputs an angle detection signal and an origin detection signal, and these signals indicate the rotation detection mechanism 60. The controller has a control device (not shown) having a function of monitoring the operation state based on each rotation state. This makes it possible to detect malfunctions during rim width adjustment and tire inspection.
[0081]
【The invention's effect】
  According to the present invention, since the rim width adjusting mechanism is provided in one spindle, the size of the rim of the tire uniformity machine in the rotational axis direction is increased as compared with the case where the rim width adjusting mechanism is disposed outside the spindle. The rim width can be changed while suppressing the above. Further, if the screw shaft member is rotated, the inner cylinder member can be moved back and forth to adjust the rim width, and the structure is simple. Further, since the rotation of the screw shaft member can be easily controlled using a general detection sensor or control device, for example, if the bead width of the tire is known in advance, the rim width can be automatically and easily adjusted to this bead width. There is an effect that it can be set.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a main part of a tire uniformity machine.
FIG. 2 is an explanatory diagram showing an overall configuration of a tire uniformity machine when viewed from the front.
FIG. 3 is an explanatory diagram showing an overall configuration of the tire uniformity machine in plan view.
FIG. 4 is an explanatory view showing a main part of a tire uniformity machine.
FIG. 5 is a schematic configuration diagram of a rotation detection mechanism.
FIG. 6 is a schematic configuration diagram of a mechanical lock mechanism and an alignment mechanism.
FIG. 7 is an explanatory diagram of a mechanical lock mechanism and an alignment mechanism.
FIG. 8 is an explanatory diagram showing an overall configuration of a tire uniformity machine when viewed from the front.
[Explanation of symbols]
1 tire
2 Upper rim
3 Lower rim
4 Upper spindle
5 Lower spindle
11 Lower rim holding mechanism
12 First lifting mechanism
13 Second lifting mechanism
15 Nut member
16 Ball screw member
20 Lower rim support member
20a recess
20b Sliding side peripheral surface
20c Flange
20d Rod insertion hole
20e Air supply hole
22 Outer cylinder support
23 Rod lifting cylinder
24 Rod member
27 Upper rim extrusion mechanism
30 Mechanical lock mechanism
31 Inclined member
32 Claw members
32a Concavity and convexity
33 Nail support
41 Inner cylinder member
41a Concavity and convexity
41b Inner peripheral inclined surface
41c Horizontal section
41d Female thread
41e Keyway
42 Outer cylinder member
42a Flange
43 Guide key
45 Screw shaft member
46 Spindle cylinder
47 Clutch mechanism
48 Brake disc
49 Brake device
50 Alignment mechanism
51 Collet material
51a outer peripheral surface
51b slit
52 Energizing mechanism
53 Push-up member
54 Spring member
56 Spindle drive
57 Drive belt
60 rotation detection mechanism
74 First rotation detector
84 Second rotation detector
87 Tire transport mechanism
90 Grip mechanism
91 Transfer cylinder
95 Rim storage mechanism
96 rim mounting table
97 Mounting table rotating device
97 Measuring mechanism
98 Mounting table slide device
99 drum support

Claims (6)

One rim detachably provided is one of the spindle and the other rim detachably provided are other spindle and capable of changing the rim width when linked so as to correspond to the bead width of the tire rim width adjusting mechanism In tire uniformity machine equipped with
The rim width adjusting mechanism is
A screw shaft member rotatably provided inside the one spindle;
It is to be coupled to the other spindle, and a inner cylindrical member which is screwed to the outer periphery of the screw shaft member so as to move forward and backward in the rim width direction relative to the one rim by rotation relative to the threaded shaft member A tire uniformity machine. Concave and convex portions formed on the inner peripheral surface of the inner cylinder member,
The claw member is provided inside the other spindle and has a concavo-convex portion formed on an outer peripheral surface thereof, and the concavo-convex portion of the claw member is engaged with the concavo-convex portion of the inner cylinder member, thereby A mechanical lock mechanism for connecting the other spindle to the fixed state in the axial direction;
The tire uniformity machine according to claim 1, further comprising: Rim width adjustment mechanism capable of changing the rim width so as to correspond to the tire bead width when one spindle on which one rim is detachably connected to the other spindle on which the other rim is detachably connected In tire uniformity machine equipped with
The rim width adjusting mechanism is
A screw shaft member rotatably provided inside the one spindle;
An outer cylinder member in which the one rim is detachably provided ;
An inner cylinder member that is connectable to the other spindle and is screwed to the outer periphery of the screw shaft member so as to move forward and backward in the rim width direction with respect to the outer cylinder member by rotation of the screw shaft member;
A spindle driving device that rotationally drives the outer cylinder member;
Features and to filter bad Uniformity machine having a clutch mechanism capable of switching connection and release of the threaded shaft member and the outer cylinder member. The screw shaft member and the inner cylinder member are inserted into the outer cylinder member,
On the outer peripheral surface of the inner cylinder member, a keyway is formed in the rim width direction,
The tire uniformity machine according to claim 3 , wherein a guide key is movably fitted to the key groove on the outer cylinder member. The rim width adjusting mechanism is
The tire uniformity machine according to claim 3 or 4 , further comprising a brake mechanism capable of prohibiting rotation of the screw shaft member. Claim 3, characterized in that it comprises a control device including a rotation detecting mechanism for detecting the rotation state of the outer cylinder member and said screw shaft member, respectively, the function of monitoring the operating state based the each rotation state The tire uniformity machine according to any one of 5 to 5 .

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