JPH04193529A - Finishing apparatus for tire - Google Patents

Abstract

PURPOSE:To reduce the vibration and accurately cut off spew from tires in a plurality of sizes by providing a drive shaft and a follower shaft on a horizontal line, placing a multistage rim and a rim stopper at opposed ends of both shafts to support a tire in an upright position and rotating the tire under the condition that the backward movement of the follower shaft is restrained by as much as a width of the tire when said shaft retreats as the internal pressure is built. CONSTITUTION:A tire T is placed on an underside feeding table 27 of a tire lifting apparatus, distances are reduced between side plates 30 and 32 right and left and between receiving pads 39 and 43 before and behind and the tire T is supported in a upright position. Then, the tire lifting apparatus is elevated and positioned between the end of a drive shaft 4 and multistage rims 6 and 11, the underside feeding table 27 is moved to the side of the drive shaft 4 and the follower shaft 10 is caused to slide to the drive shaft 4 to keep the tire put between the multilayer rims 6 and 11. Then, the internal pressure is built within the tire T by means of an internal pressure supercharger equipped in the drive shaft 4 and the backward movement of the follower shaft 10 is restrained by the amount with a rim stopper. Next, an upper feeding table 52 is descended, and while the tire T is rotated, spew cutters 65, 66 and 76 at the back of the upper feeding table 52 are brought into forced contact with spews in all parts of the tire to cut them off.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tire finishing device used for cutting and removing spills and cracks generated on the tire surface by vulcanization molding of automobile tires.

(Prior Art) Various devices are known as tire finishing devices for cutting and removing spills and cracks generated on the tire surface due to vulcanization molding of automobile tires.

For example, in Japanese Patent Application Laid-Open No. 61-8261, a drive shaft equipped with a tire internal pressure filling device is provided above the frame, and a driven shaft that can be raised and lowered is provided vertically below the drive shaft. An upper rim and a lower rim that fit into the bead of the tire are attached to the opposite ends, and the tire transported from the side is placed sideways on the lower rim, and the lower rim is pushed up to form the upper and lower rims. The tire is sandwiched between them, and then the tire is filled with internal pressure, and the drive shaft is driven to rotate the tire horizontally.
It has been disclosed that a comb-like spew cutter is pressed against each of the tread portion, shoulder portion, and side portion to cut and remove the spews and splints protruding from the surface of each of the above portions.

Furthermore, a device is known in which a tire with an unfilled internal pressure is supported upright on a plurality of rollers and rotated, while a spill cutter is pressed against the tread portion of the tire.

(Problem to be Solved by the Invention) However, in a conventional tire finishing device that supports and rotates a tire horizontally, a spill cutter is installed from above on the upwardly facing side and shoulder portions, and a spill cutter is installed on the downwardly facing side and shoulder portions. Since the spew cutter is pressed against the shoulder part from below to cut the spew at each part, the contact pressure of the spew cutter on the top and bottom surfaces of the tire is different, resulting in a difference in the degree of cutting of the spew. It was difficult to adjust the contact pressure of the spill cutter to prevent this.

In addition, conventional tire finishing equipment that stands tires upright
Since tires with unfilled internal pressure are supported on multiple rollers, the vibrations of the tires are large and it is not possible to accurately cut the spew from the root, making it particularly suitable for all types of tires of different sizes. It was difficult to do so.

This invention reduces vibration by supporting and rotating the tire upright in its heated portion, and also keeps both side portions symmetrical. This allows for accurate cutting.

(Means for Solving the Problems) A tire finishing device according to the present invention includes a drive shaft equipped with a tire internal pressure filling device and a driven shaft that is slidable along an extension of the drive shaft and arranged on a horizontal line. , a multi-stage rim that enables fitting of multiple types of tire bead parts of different sizes is fixed to the opposing ends of the drive shaft and the driven shaft, respectively, and a multi-stage rim that allows fitting of multiple types of tire bead parts of different sizes is fixed to the opposite end of the driven shaft, and a A rim stopper is provided to adjust the amount of retraction of the driven shaft according to the tire width, and a lower lifting platform that can be freely raised and lowered is provided below the multi-stage rim, and a lower lifting platform is provided that is parallel to the drive shaft and lowered on the lower lifting platform. The left and right side plates that move according to the width of the tire on the side lifting platform and stand upright by touching the side part of the tire, and the side plates that move at right angles to the left and right side plates and according to the diameter of the tire on the lower lifting platform. A tire lifting device is installed for raising the tire on the lower lifting platform to the height of the drive shaft, comprising front and rear receiving plates that move symmetrically back and forth to touch the tire tread, The present invention is characterized in that a spew cutting device is provided, which includes an upper lifting table that can be raised and lowered upwardly, and a spew cutting cutter located on the lower surface of the upper lifting table. In addition, the upper mold corresponding to the tire or both sides,
When vulcanization is performed using a split mold type mold consisting of a lower mold and a segment-shaped tread mold corresponding to the tread part, the mating surface of the upper mold or lower mold and the tread mold (
A pinch cutter for cutting the protrusion that occurs at the pinch portion) can be added to the above-mentioned spill cutting cutter and provided on the upper lifting platform.

(Operation) The tire transported from the side is placed on the lower lifting platform of the tire lifting device, and the distance between the left and right side plates and the front and rear receiving plates is narrowed according to the width and diameter of the tire, and the tire is held upright. Next, raise the tire lifting device to position it between the multi-stage rim at the end of the drive shaft and the multi-stage rim at the end of the driven shaft, then move the lower lifting platform toward the drive shaft, and is slid toward the drive shaft to sandwich the tire between the multistage rim at the end of the drive shaft and the multistage rim at the end of the driven shaft. Next, the tire is filled with internal pressure by the tire internal pressure filling device provided on the drive shaft, and at this time, the amount of retraction of the driven shaft is limited by the rim stopper. When the internal pressure filling described above is completed, the left and right side plates and front and rear receiving plates of the upper lifting platform are opened, the upper lifting platform is lowered to its original position, and the drive shaft is driven to rotate the tires before lifting the upper lifting platform. The spew cutting cutter located on the underside of the stand is pressed against the tire to cut the spew at each part. After the above-mentioned cutting is completed, the air inside the tire is discharged, the rim stopper is returned to its original position, and the tire between the multistage rims is opened and discharged.

(Embodiment) In FIG. 1, a first frame 2 and a second frame 3 are erected on the left side and the right side of a base l on the floor, respectively. A drive shaft 4 rotated by a motor is installed horizontally on the upper part of the first frame 2 on the left side. This drive shaft 4 is equipped with an internal pressure filling device for the tire T, is connected to an air pipe 5 protruding from its left end or a near compressor (not shown), and has an air nozzle opening at its right end.

A multistage rim 6 that fits into a bead on one side of the tire T is fixed to the right end where the air nozzle opens. This multi-stage rim 6 is formed in a step-like manner around the periphery so as to fit into three types of bead portions having different diameters.

A spindle stand 7 is provided on the second frame 3 on the right side, located on the extension line of the drive shaft 4. A spindle 8 is slidably supported on this spindle stand 7, and the left end of the spindle 8 is (Drive shaft side end) A driven shaft 10 is rotatably supported via a driven shaft holder 9, and a multistage rim 11 similar to the above is attached to this driven shaft 10. The tip of the piston rod 13 of the spindle fluid cylinder 12 fixed to the lower surface of the spindle base 7 is connected to the driven shaft holder 9, and by the operation of this spindle fluid cylinder 12, the multistage rim 11 on the driven shaft side is advance and retreat.

The disk 15 located on the right side of the spindle 8 or the second
It is vertically fixed to the frame 3 via a connecting member (not shown), and around this disc 15, as shown in FIGS. 2 and 3, seven L-shaped brackets 16 or the above spindle 8 are attached. A stopper fluid cylinder 17 is fixed to this L-shaped bracket 16 radially with the piston rod 18 facing inward, and a guide rod 19 parallel to the piston rod 18 is slidable. mounted on. And the above piston rod 1
A sliding block 20 is fixed to the tips of the spindle 8 and the guide rod 19 (see FIG. 3), and a rod-shaped rim stopper 21 parallel to the spindle 8 is attached to the sliding block 20. This rim stopper 21 has a head 22 on the drive shaft side, and is biased by a compression coil spring 23 in a direction to push out the head 22. Then, when the driven shaft 8 moves forward toward the drive shaft 4, a predetermined one of the seven stopper fluid cylinders 17 operates to close the rim stopper 2.
1 enters between the driven shaft 8 and the disc 15, and then when the driven shaft 8 retreats, the rim stopper 21 limits the amount of retreat of the driven shaft 8. The thickness of the head 22 differs for each of the seven rim stoppers 21, and the amount of retraction of the driven shaft 8 can be adjusted by selecting the stopper fluid cylinder 17 to be operated according to the width of the tire. .

As shown in FIG. 1, a tire lifting device consisting of a lower lifting platform 27, left and right side plates 30, 32, front and rear receiving plates 39, 43, etc. is provided below the multistage rim 6.11. That is, the lower lifting platform 27 can be moved up and down along the vertical guide rule 26 fixed to the first frame 2.
It is raised and lowered by being driven by a motor-driven screw shaft (not shown). Two first guide shafts 2 parallel to the drive shaft 4 are mounted on the upper surface of the lower lifting platform 27.
A sliding base 29 is slidably provided via 8, and is moved left and right by rotation of a motor-driven screw shaft (not shown). A left side plate 30 for supporting the left side of the tire T is vertically fixed to the left end of the upper surface of the sliding base 29 (the end on the side of the first frame 2), and the first guide shaft 28 is fixed to the opposite right end. A right side plate 32 is slidably provided to support the right side portion of the tire T via two second guide shafts 31 parallel to the second guide shaft 31, and this right side plate 32 is connected to a motor-driven screw shaft (not shown). It moves left and right by rotation.

The right side plate 32 has a width measuring means (
(not shown), and left and right side plates 30.3.
2 and the guide roller 35 (fourth
When the tire T is placed on top of the tire T (see figure), the right side plate 32 slides in the direction of the left side plate 30, making the tire T stand upright, and when the distance between them becomes equal to the width of the tire T, the above sliding movement stops. ,
The width of the tire T is calculated based on the sliding distance, and the obtained value is stored.

As shown in FIG. 4, the above-mentioned right side plate 32 is formed in a U-shape, and the interval between the vertical parts 33.33 on both sides thereof is made larger than the outer diameter of the above-mentioned multistage rim 6.11. When the side lifting platform 27 is raised, the multi-stage rim 11 is inserted between the vertical portions 33, 33 on both sides. On the inner surface of the right side plate 32, vertical guide rollers 34 for guiding the tires T are arranged in multiple rows and stages. Note that the left side plate 30 facing the right side plate 32 is also formed in the same U-shape as described above, and guide rollers 34 are arranged on its inner surface. Further, in the center between the left side plate 30 and the right side plate 32, there are a plurality of guide rollers 35 perpendicular to the drive shaft 4 for mounting upright tires, and a pair of left and right support rails 36,36. Supported by

A front sliding table 38 is slidably provided in front of the guide roller 35 (on the right side in FIG. 4) via a front guide shaft 37 fixed in parallel with the guide roller 35, and is driven by a motor. It moves back and forth (left and right in the figure) by rotating a shaft (not shown). A front receiving plate 39 for receiving the front part of the tire T placed upright on the guide roller 35 is erected on the front sliding table 38, and a horizontal guide roller is attached to the receiving surface of the front receiving plate 39. A large number of 40 pieces are arranged.

On the opposite side of the front sliding table 38 (left side in FIG. 4),
A rear sliding table 42 is provided via a rear guide shaft 41 parallel to the front guide shaft 37 described above. The rear end of the lower surface of a rear receiving plate 43, which also serves as a guide for carrying in the tire T, is rotatably connected to the rear end of this rear sliding base 42 by a pin 44, and on the other hand, it is connected to the front end of the rear sliding base 42 so as to be swingable. The upper end of the rear receiving plate 43 is swingably connected to the tip of the piston rod 46 of the receiving plate fluid cylinder 45, and when the piston rod 46 is retracted, the rear receiving plate 43 stands up at the position indicated by the solid line in the figure. When the piston rod 46 protrudes, the rear receiving plate 43 falls backward as shown by the two-dot chain line to form a guide path for carrying in the tire T. Note that a large number of guide rollers 40 are arranged on the tire receiving surface of the rear receiving plate 43, similarly to the front receiving plate 39.

The rear sliding table 42 slides an equal distance in the opposite direction in conjunction with the sliding of the front sliding table 38, and measures the diameter of the tire T based on the amount of sliding, and calculates the measured value. It is designed to memorize. That is, when the tire T is supplied onto the guide roller 35 in the position where the rear receiving plate 43 is in a fallen position, the rear receiving plate 43 stands up, and the front and rear receiving plates 38, 43 move forward toward each other, and these stops when it touches the tire T, and the diameter of the tire T is determined by the distance traveled during that time.

In FIG. 1, above the rim 6.11 there is a spewer comprising an upper lifting platform 52, a tread cutter 65 for cutting the spew of the tire T, a shoulder cutter 66 and a pinch cutter 76 (see FIG. 7). A cutting device is provided. That is, an upper elevating table 52 is provided on an upper frame 50 installed on the upper part of the first frame 2 so as to be movable up and down via a vertical guide rail 51, and the rotation of a motor-driven screw shaft (not shown) is provided. to move up and down. This upper lifting platform 52 has a triangular front plate 5.
3. A rear plate 54 and a rectangular bottom plate 55 are provided (see FIGS. 5 and 6), and a pair of front and rear guide rails 56 are fixed to the left and right sides of the lower surface of the bottom plate 55, respectively. A cutter sliding block 57.57 is attached to each of the left and right cutter sliding blocks 57.57. The threaded shafts 58.58 are screwed in, and the rotation of the left and right cutter threaded shafts 58.58 causes the left and right cutter sliding blocks 57.57 to slide in opposite directions.

A gate-shaped cutter holder 60 is fixed to the lower surface of the cutter sliding block 57 located on the right side.
An upper cutter shaft 61 and a lower cutter shaft 62 in the front-rear direction are attached to the legs of the cutter. An upper arm 63 and a lower arm 64 extending above the driven shaft side rim 11 are attached to the upper cutter shaft 61 and lower cutter shaft 62, respectively, and a tread cutter 65 is attached to the tip of the upper arm 63, and a tread cutter 65 is attached to the lower end of the upper arm 63. Shoulder cutters 66 are each swingably attached to the tips of the arms 64.

On the other hand, a bracket 67 is erected upwardly on the upper surface of the cutter sliding block 57, penetrating the long hole 55a formed in the bottom plate 55 of the upper lifting platform 52, and the upper end of the bracket 67 is horizontal. Height adjustment bolts 70 and 70 are respectively attached to both front and rear ends of a metal plate 69 in the front and rear direction fixed to the arm portion 68. The tip of the upper arm 63 is connected to the front height adjustment bolt 70 via a tread fluid cylinder 71 and its piston rod 72, and the protrusion of the piston rod 72 causes the tread cutter 65 to cut the tread of the tire T below. It is pressed against the portion Ta. Further, the tip of the lower arm 64 is connected to the rear height adjustment bolt 70 via a shoulder fluid cylinder 73 and its piston rod 74, and the protrusion of the piston rod 74 causes the shoulder cutter 66 to be connected to the shoulder of the tire T. It is pressed against part Tb. Note that a tread cutter 65 and a shoulder cutter 66 are similarly attached to the cutter sliding block 57 located on the left side of FIG. 1 via a cutter holder 60.

In FIG. 1, the rear of the upper lifting platform 52 (back side of the paper)
An elevating platform (not shown) similar to this upper elevating platform 52 is provided, and a bottom plate 70 (see FIG. 7) of this elevating platform is provided.
A pair of front and rear guide rails 71 are fixed to the left and right sides of the lower surface of the upper lifting platform 52 (however, only the right side is shown in FIG. 7), and a cutter sliding block 72 slides on the guide rails 71. The bottom plate 70 is freely attached to the female screw portion provided on the cutter sliding block 72.
A motor-driven cutter screw shaft 72a supported on the lower side of the cutter screw shaft 72a is screwed into the cutter screw shaft 72a.
The cutter sliding block 72 slides due to the rotation of the cutter.

An inverted U-shaped cutter holder 73 is fixed to the lower surface of the cutter sliding block 72 on the right side.
A cutter shaft 74 extending in the front-rear direction is attached to the leg portion of the cutter shaft 74, and a pinch cutter 76 is swingably attached to this cutter shaft 74 via a cutter arm 75 directed downward.

On the other hand, a bracket 77 is erected upwardly on the upper surface of the cutter sliding block 72, penetrating the bottom plate 70, and a height adjustment bolt 79 is attached to the upper end of the bracket 77 via a sheet metal 78. , this height adjustment bolt 79
The tip of the cutter arm 75 is connected to the pinch section fluid cylinder 80 and its piston rod 81, and the pinch cutter 76 is
is pressed against the pinch portion Tc of the tire T (see FIG. 5).

As shown in FIG. 1, the horizontal beam 2a of the first frame 2
A support post 91 is provided on the horizontal beam 3a of the second frame 3, and a support post 92 is erected to face each other directly below the center line passing through the drive shaft 4 and the driven shaft 10, respectively. A pair of reference photoelectric switches 93a for detecting the upper bead of the tire T in an upright position at the upper ends of the pillars 91 and 92;
93b, and a first photoelectric switch 94a194b and a second photoelectric switch 95a, 95b for detecting the lower beat of the tire T are provided at three locations having lower heights different from each other.
and third photoelectric switches 96a and 96b are provided in order from above, and while the upright tire T is being pushed up and raised by the tire lifting device, the upper bead crosses the optical path of the reference photoelectric switches 93a and 93b to switch the reference photoelectric switch. When light passes through 93a193b, the bead diameter is determined depending on which of the lower first photoelectric switches 94a, 94b1, second photoelectric switches 95a, 95b, and third photoelectric switches 96a, 96b passes the light, and this determination determines the bead diameter. The raised stroke of the tire lifting device is set according to this bead diameter, and the height of the center of the tire T on the tire lifting device (when aligned with the drive shaft 4, the height of the tire lifting device) is stored. The rise stops.

Note that the reference photoelectric switches 93a, 93b1, the first photoelectric switches 94a, 94b, the second photoelectric switches 95a,
The optical axes of the third photoelectric switches 95b and 96a, 96b are provided to pass between the vertical portions 33.33 of the left and right side plates 30.32 on the tire lifting device.

In the above structure, when the rear receiving plate 43 of the tire lifting device is in the fallen state shown by the two-dot chain line in FIG. The rear receiving plate 43 stands up, and the rear receiving plate 43 and the front receiving plate 39 move in accordance with the diameter of the tire T.
The diameter of the tire T is measured, and its center is positioned directly below the drive shaft 4. Meanwhile, the right side plate 32 is moved according to the width of the tire T to stand up the tire T, and its width is measured. After that, it ascends along the lower lifting platform 27 or the first frame 2, and at the second moment, the heat diameter of the tire T is determined by the photoelectric switch 93.
a, 93b, 94a, 94b, 95a, 95b, 96a
, 96b, and when the center of the tire T reaches the height of the drive shaft 4, it either rises or stops.

Next, the sliding head 29 on the lower lifting platform 27 slides toward the multi-stage rim 6 on the drive shaft 4 side, and the left bead portion of the tire T is fitted into the multi-stage rim 6. At the same time, the spindle fluid cylinder 12 is driven, and is advanced through the spindle 8 to the multi-stage rim 11 on the driven shaft 10 side or to the drive shaft 4 side, and this multi-stage rim 11 is fitted into the right side heat section of the tire T. is held between the left and right multistage rims 6.11.

Then, depending on the tire width and bead diameter measured as described above, an appropriate one of the seven stopper fluid cylinders 17 on the disk 15 is selected and operated, and the piston rod 18 is protruded. Rim stopper 21 at its tip
or enters between the spindle 8 and the disc 15.

Next, compressed air is sent from the air vibrator 5 to the drive shaft 4.
The tire T is filled with internal pressure by the internal pressure filling device attached to the tire T, and as the tire T is filled with internal pressure, the tire T is transferred to the spindle 8 via the multistage rim 11 on the driven shaft side and the driven shaft 10.
, or at this time, the amount of retraction of the rim stopper 21 or the spindle 8 is limited to a predetermined amount depending on the width of the tire T. After the internal pressure is filled, the right side plate 32 on the tire lifting device is opened, and the tire lifting device consisting of the lower lifting platform 27, left and right side plates 30, 32, front receiving plate 39, rear receiving plate 43, etc. is lowered. .

Next, the drive shaft 4 is driven, the tire T starts rotating via the rim 4.11, the upper lifting platform 52 moves to a predetermined height according to the diameter of the tire T, and the left and right cutters The sliding blocks 57.57 and 72.72 move to predetermined left and right positions according to the width of the tire T, and the tread fluid cylinder 711, the shoulder fluid cylinder 73, and the pinch part fluid cylinder 80 operate, respectively, to remove the tread. cutter 65, shoulder cutter 66 and pinch cutter 7
6 are pressed against the tire T, and the spills and protrusion of each part of the tire T are cut and removed.

Complete the tire lifting device or lowering as described above,
When the tire T starts to rotate, the exhaust soute 90 (see FIGS. 1 and 4), which is waiting under the spindle 8, is inserted under the tire T.

When the cutting and removal of the spill is completed, the cutters 65, 66, and 76 are separated from the tire T, and the upper lifting platform 52 returns to its original standby position, and the air inside the tire T is exhausted, and the rim stopper 21 and the driven shaft 10 are returned to their original positions, and the tire T is further pushed out by the multistage rim 6 on the drive shaft 4 side, and the tire T is placed in the discharge chute 90.
The tire T rolls through the discharge chute 90 and is discharged backwards, and when the discharge is finished, the discharge chute 90 returns to its original standby position.

(Effects of the Invention) This invention arranges a drive shaft equipped with a tire internal pressure filling device and a slidable driven shaft on a horizontal line, and fixes multistage rims to opposing ends of the drive shaft and driven shaft, respectively. death,
In addition, it is equipped with a rim stopper, supports the tire filled with internal pressure in an upright position, and rotates the tire while limiting the amount of retreat of the driven shaft due to filling the internal pressure according to the width of the tire. Vibration is significantly reduced compared to a method in which the tire is placed upright, and the contact pressure of the spew cutting cutter is easier to adjust than in a method in which the tire is supported horizontally. It is possible to precisely cut the spew from the root. In addition, a tire pushing device is installed below the multi-stage rim,
Since a spill cutting device is installed above the rim, the tire transported from the side is placed on the lower lifting platform of the tire pushing device and raised to the position of the multi-stage rim. The spew can be cut by attaching it to the spew and then lowering the spew cutting device located above. It is equipped with the above-mentioned tire lifting device or a lower lifting platform that can be raised and lowered, left and right side plates, and front and rear receiving plates. The tire is positioned directly below the drive shaft and raised to the height of the drive shaft, so by loading a tire of any size onto the tire lifting device, the tire is automatically raised and multi-tiered. Can be mounted on the rim.

[Brief explanation of the drawing]

1 is a front view of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, FIG. 3 is a sectional view taken along the I 1 is a sectional view taken along the line IV-IV, FIG. 5 is a front view of the main parts of the spew cutting device, and FIG.
The sectional view taken along the line VI and FIG. 7 are front views of the pinch cutter. T: Tire, 4: Drive shaft, 5: Air vibe for filling internal pressure,
6, 1: Rim, 8 Nissindle, 10: Driven shaft, 21
: Rim stopper, 22: Head of rim stopper, 27: Lower lifting platform of tire lifting device, 30: Left side plate of tire lifting device, 32: Slidable right side plate of tire lifting device, 39: Front receiving plate, 43: Rear receiving plate, 52
Upper lifting platform, 65: Tread cutter, 66: Shoulder cutter, 76: Pinch cutter. Patent applicant Toyo Rubber Industries Co., Ltd. Agent Patent attorney Yoshi 1) Ryo Tsukasa fl II & 1 Figure lj Figure 3

Claims (1)

[Scope of Claims] [1] A drive shaft equipped with a tire internal pressure filling device and a driven shaft that is slidable along an extension of the drive shaft are arranged on a horizontal line, A multistage rim that allows fitting of multiple types of tire bead parts of different sizes is fixed to the opposite end, and the amount of retraction of the driven shaft when filling the tire with internal pressure is adjusted to the width of the tire on the side opposite to the rim of the driven shaft. A rim stopper is provided for adjusting accordingly, and a lower lifting platform is provided below the multi-stage rim that can be freely raised and lowered, and a rim stopper is provided on the lower lifting platform parallel to the drive shaft and according to the width of the tire on the lower lifting platform. The left and right side plates touch the side of the tire and stand the tire upright, and the left and right side plates move perpendicularly to the left and right side plates and symmetrically move back and forth according to the diameter of the tire on the lower lifting platform to lift the tire. an upper lifting platform that can be freely raised and lowered above the multi-stage rim; and a spew cutting cutter located on the lower surface of the upper lifting platform.