CN117509151B - Tire stacking device and application method thereof - Google Patents

Abstract

The invention relates to the technical field of tire conveying and stacking equipment, in particular to a tire stacking device and a use method thereof. The tire stacking device comprises an upper disc connected with the mechanical arm, a central rod is coaxially arranged on the lower end face of the upper disc, the lower end face of the central rod is coaxially connected with a lower disc, the diameter of the lower disc is smaller than that of a tire bead, a radial expansion mechanism is arranged on the central rod, the radial expansion mechanism comprises a plurality of expansion push rods which are arranged around the circumference of the central rod at equal intervals, and an expansion driving mechanism is arranged on the lower disc and can drive the expansion push rods to synchronously radially expand until the expansion push rods are abutted against the inner wall of the tire. In summary, the tire stacking device provided by the invention clamps the tires from the inside of the tires, has good matching performance with the existing conveying equipment, has good tire grabbing and stacking stability, and can be suitable for stacking tires of various types.

Description

Tire stacking device and application method thereof

Technical Field

The invention relates to the technical field of tire conveying and stacking equipment, in particular to a tire stacking device and a use method thereof.

Background

After the tire is produced, the tire is required to be conveyed to a warehouse from a production line, then the tire is piled up and stored through a piling device, the existing piling device is usually connected with a clamping mechanism and a mechanical arm, the clamping mechanism is driven by the mechanical arm to clamp the tire and then is transferred to a target position for piling, the clamping mechanism is usually driven by an air cylinder to squeeze and clamp the outer wall of the tire, the clamping pressure is overlarge, the tire is easy to deform, the regularity of piling up is affected, the clamping pressure is too small, and the unstable clamping phenomenon is easy to generate.

The patent with the application number of CN202311202872.1 discloses a tire stacking device, which comprises a mechanical arm, wherein a supporting mechanism is arranged at the bottom of the mechanical arm, the supporting mechanism comprises an upper top plate and a lower top plate, the upper top plate and the lower top plate are connected through bolt pressing, a mounting groove and a clamping groove are respectively formed in the lower top plate, and an electromagnet is arranged in the mounting groove; the clamping mechanism comprises a fixed plate, and the bottom of the fixed plate is movably hinged with the clamping plate through a support column. The device obtains the pressure that the grip block is used for the fixed tire of centre gripping through compression spring two to utilize synchronous motion that synchronous post and grip block fixed connection produced, drive supporting shoe synchronous motion to the bottom of tire, and carry out the butt to the tire and support, utilize the grip block that rotates 90 to extrude spacing to the surface of tire, the roof provides the omnidirectional spacing parcel to the tire under the cooperation at last, has effectively improved the stability of the loading and unloading in-process of tire. However, the above scheme has the following technical problems:

1. when the tire is subjected to omnibearing limit wrapping, the supporting block needs to vertically rotate to the bottom of the tire to support the tire, the conventional tire conveying equipment is usually a conveying roller way, and the conveying roller way is closely attached to the bottom of the tire during conveying, so that the vertical rotation of the supporting block can be limited, and a special conveying equipment is required to be equipped for smoothly grabbing the tire, so that the matching property of the stacking device and the conventional conveying equipment is poor;

2. when stacking the tires and other tires, the supporting blocks are coated on the bottoms of the tires, and can be inserted between two adjacent stacked tires, when the clamping of the tires is released, the supporting blocks need to vertically rotate to separate from the bottoms of the tires, the tires below the supporting blocks interfere the movement, and meanwhile, the supporting blocks are in friction contact with the tires below the supporting blocks when the supporting blocks are separated, so that the tires are not stacked stably, and the regularity is reduced;

3. in the process of grabbing the tire, the vertical locking is carried out through electromagnetic attraction, and the magnetic attraction is required to simultaneously resist the gravity of the tire and the elastic force of the spring, so that the phenomenon of unstable locking is easily caused;

4. the device directly carries out the omnidirectional cladding to the tire, and relevant size is all not adjustable, can only be suitable for the tire of single model, and application scope is narrow.

In view of the above, it is desirable to provide a stacking device which has good matching with the existing conveying equipment, good tire grabbing and stacking stability, and is suitable for various types of tires.

Disclosure of Invention

In order to solve at least one of the technical problems, the invention provides a tire stacking device, which comprises an upper disc connected with a mechanical arm, wherein a central rod is coaxially arranged on the lower end surface of the upper disc, the lower end surface of the central rod is coaxially connected with a lower disc, the diameter of the lower disc is smaller than the diameter of a tire bead, a radial expansion mechanism is arranged on the central rod, the radial expansion mechanism comprises a plurality of expansion push rods which are equidistantly arranged around the circumference of the central rod, and an expansion driving mechanism is arranged on the lower disc and can drive the expansion push rods to synchronously radially expand until the expansion push rods are abutted against the inner wall of a tire.

Preferably, the radial expansion mechanism comprises a circular fixing ring coaxially arranged on the central rod, a plurality of first radial connecting rods are arranged on the circumference of the side wall of the fixing ring at equal intervals, the first radial connecting rods are pivotally connected with one end of an expansion push rod, the other end of the expansion push rod is connected with a vertical roller, and the expansion driving mechanism can drive the expansion push rod to rotationally expand or contract.

Preferably, an auxiliary supporting mechanism is arranged above the radial expansion mechanism, the auxiliary supporting mechanism comprises a plurality of expansion pushing plates which are arranged around the circumference of the central rod at equal intervals, a transmission rod connected with the expansion pushing rod is vertically arranged on the expansion pushing plate, the expansion pushing plate can synchronously stretch and retract along with the expansion pushing rod, and the length of the expansion pushing plate is smaller than that of the expansion pushing plate and the width of the expansion pushing plate is larger than that of the expansion pushing rod.

Preferably, the expansion driving mechanism comprises a rotary drum and a rotary cylinder for driving the rotary drum to rotate, the rotary drum is coaxial with the central rod, a plurality of limiting holes are formed in the circumference at equal intervals, the expansion push rod freely penetrates through the limiting holes, the rotary drum is located on the outer side of the rotary drum, and the circumferential length of the limiting holes is consistent with that of the expansion push rod in a contracted state.

Preferably, the auxiliary supporting mechanism comprises a circular sliding ring which is coaxially and slidably arranged on the central rod, a plurality of second radial connecting rods are arranged on the circumference of the outer side wall of the sliding ring at equal intervals, the second radial connecting rods are connected with one end of the expansion pushing plate through circular shaft pivot shafts, the top of the circular shaft is connected with the upper disc, the bottom of the circular shaft is connected with the first radial connecting rods and the hinge shaft of the expansion pushing rod, the second radial connecting rods and the expansion pushing plate can vertically slide along the transmission rod and the circular shaft, two-way memory springs connected with the fixed ring are arranged at the bottom of the sliding ring, and a locking mechanism is arranged between the sliding ring and the central rod.

Preferably, the locking mechanism comprises a locking ring, a locking bolt and a telescopic control, the locking ring is fixedly arranged on the inner annular wall of the sliding ring and can vertically slide along the central rod, the locking bolt comprises a vertical plate and a plurality of transverse plates arranged on the vertical plate, the distance between two adjacent transverse plates is consistent with the height of the locking ring, a locking bolt groove is formed in the central rod, the locking bolt and the telescopic control are arranged in the locking bolt groove, and the telescopic control can control the locking bolt to radially extend out of the central rod to lock or unlock the locking ring.

Preferably, the inner annular wall of the locking ring and the free end of the transverse plate are arc-shaped, the telescopic control comprises a mounting plate arranged at the center of the lock tongue groove, an electromagnet is arranged on the mounting plate, the two lock tongues are symmetrically arranged on two sides of the mounting plate, and a permanent magnet which is attracted with the electromagnet in an initial state is arranged on the vertical plate; the bolt slot comprises an axial slot for accommodating the bolt and the telescopic control, and a radial hole for the transverse plate to slide through.

Preferably, the fixed ring comprises an upper ring and a lower ring which are arranged at equal intervals, the first radial connecting rod comprises an upper connecting rod connected with the upper ring and a lower connecting rod connected with the lower ring, the expansion push rod comprises an upper push rod pivotally connected with the upper connecting rod and a lower push rod pivotally connected with the lower connecting rod, the roller is respectively connected with the upper push rod and the lower push rod, and the lower push rod penetrates through the limiting hole.

Preferably, the center rod comprises a center rod body, a thread groove is formed in the center of the lower end face of the center rod body, the thread groove is connected with a rotating shaft in a threaded mode, the rotating shaft is connected with a lower disc in a rotatable mode, a rotary driving mechanism capable of driving the rotating shaft to rotate is arranged on the lower disc, a connecting plate connected with a lower circular ring is arranged on the lower disc, the center rod body is fixedly connected with the upper circular ring, the rotating shaft is rotatably connected with the lower circular ring, the roller comprises an upper roller connected with an upper push rod and a lower roller connected with a lower push rod, and the diameters of the upper roller and the lower roller are identical and are connected in series in a sliding inserting mode through an inserting shaft.

The invention provides a use method of a tire stacking device, which is characterized by comprising the following steps of:

step S100, installation: the upper disc is fixedly connected with the mechanical arm, the expansion driving mechanism is connected with the controller, and in an initial state, the radial expansion mechanism is in a contracted state;

step S200, grabbing the tire: the mechanical arm moves the tire stacking device to the upper part of the tire and then moves downwards until the lower disc and the radial expansion mechanism are completely arranged in the tire, the expansion driving mechanism drives the expansion push rods to radially expand until all the expansion push rods are abutted against the inner wall of the tire, and in the process, the tire can be automatically coaxial with the center rod under the pushing of the expansion push rods;

step S300, stacking tires: lifting the tires through a mechanical arm, transferring the tires to a target stacking position, and coaxially stacking the tires with other tires; the expansion driving mechanism controls the expansion push rod to radially shrink to an initial state, and then the mechanical arm moves the tire stacking device upwards until the tire is separated from the tire;

step 400, repeating the steps from step 100 to step 300, and stacking the next tire.

Compared with the prior art, the invention has the following beneficial technical effects:

1. the tire stacking device directly clamps the tire from the inside of the tire, and has good matching performance with the existing conveying equipment; in the tire stacking process, the tire stacking device is only in contact with one tire, and cannot be interposed between two adjacent stacked tires, so that friction contact with the adjacent tires cannot be generated in the tire releasing process, and the situation of unstable stacking or reduced regularity caused by friction contact is avoided;

2. the rotary expansion structure is adopted, meanwhile, the roller is arranged at the free end of the expansion push rod, in the process of grabbing the tire, the expansion push rod is driven by the expansion driving mechanism to rotate, the tire is gradually and radially expanded in a rotating state, the tire position can be more gently corrected to be coaxial with the central rod, the roller can be in rolling contact with the inner wall of the tire, the friction resistance is reduced, the contact area between the radial expansion mechanism and the tire is increased, and the clamping stability is improved;

3. an auxiliary supporting mechanism is arranged above the radial expansion mechanism, and can rotate and expand along with the radial expansion mechanism and directly support the upper sidewall of the tire, so that the radial deformation pressure and vertical sliding phenomenon of the tire can be reduced, and the clamping stability is improved;

4. the expansion driving mechanism comprises a rotary drum and a rotary cylinder for driving the rotary drum to rotate, the expansion push rod freely passes through a limit hole of the rotary drum, when the rotary drum rotates under the driving of the rotary cylinder, the expansion push rod is pushed to rotate, so that the expansion push rod radially expands, the circumferential length of the limit hole is consistent with the circumferential length of the expansion push rod in the limit hole in a contracted state (namely, an initial state), and the rotation driving efficiency can be improved;

5. the expansion push plate of the auxiliary supporting mechanism can vertically slide along with the sliding ring under the control of the two-way memory spring, is far away from the upper side wall of the tire before expansion, avoids friction with the upper side wall during expansion, slides upwards after expansion to target parameters and is locked at the upper side wall of the tire through the locking mechanism to play a supporting position, and does not vertically slide between the tire and the radial expansion mechanism when the tire is lifted up through the mechanical arm, and simultaneously the circular shape formed by the expansion push rod is consistent with the inner diameter of the tire and does not cause radial deformation of the tire;

6. the locking mechanism comprises a locking ring, a locking bolt and a telescopic control, wherein the locking ring is fixedly arranged on the inner annular wall of the sliding ring, the locking bolt comprises a vertical plate and a plurality of transverse plates arranged on the vertical plate, the distance between two adjacent transverse plates is consistent with the height of the locking ring, and the transverse plates are vertically arranged at intervals, so that the locking requirements on different heights can be better met; the telescopic control only needs to play a role in driving the lock tongue to radially stretch, the lock ring is clamped between two adjacent transverse plates, no bearing is needed, and a stable locking structure can be formed;

7. the free ends of the inner annular wall of the locking ring and the transverse plate are arc-shaped, so that the locking ring and the transverse plate can be inserted and connected in a guiding way, the locking ring and the lock tongue can be conveniently inserted and fixed, and the process tolerance is increased; the radial holes only used for the transverse plates to pass through are arranged on the lock tongue grooves, so that the lock tongue can be limited, and the lock tongue is prevented from completely falling out of the lock tongue grooves under the repulsive force;

8. the upper push rod, the lower push rod and the roller of the radial expansion mechanism form a frame type rotating structure, so that the connection and the rotating stability of the roller are improved, in addition, due to the frame type rotating structure, the integral synchronous rotation of the upper push rod, the lower push rod and the roller can be realized only by the lower push rod penetrating through the limiting hole, the vertical height of the roller is greatly reduced, and the manufacturing cost is reduced;

9. the central rod can stretch out and draw back along the vertical direction, and the whole length of the roller is increased or reduced, so that the application range of the tire with different models is improved;

in summary, the tire stacking device provided by the invention has the advantages that the tire is grabbed from the inside of the tire, the matching performance with the existing conveying equipment is good, the tire grabbing and stacking stability is good, and the tire stacking device can be suitable for stacking tires of various types.

Drawings

FIG. 1 is a right side view of an initial state of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2A;

FIG. 4 is a section B-B of FIG. 1;

FIG. 5 is a perspective view of the structure of the present invention in an initial state;

FIG. 6 is an exploded view of FIG. 5;

FIG. 7 is an exploded view of the radial expansion mechanism;

FIG. 8 is an exploded view of the expansion drive mechanism;

FIG. 9 is a schematic view of the auxiliary support mechanism;

FIG. 10 is a right side view of the present invention capturing a small tire condition;

FIG. 11 is a cross-sectional view of FIG. 10C-C;

FIG. 12 is an enlarged view of a portion of B in FIG. 11;

FIG. 13 is a section D-D of FIG. 10;

FIG. 14 is a right side view of the present invention capturing a large tire condition;

FIG. 15 is a section E-E of FIG. 14;

fig. 16 is a cross-sectional view of F-F of fig. 14.

Reference numerals illustrate:

1. upper disc, 2, center rod, 21, center rod body, 211, tongue groove, 2111, axial groove, 2112, radial hole, 212, thread groove, 213, guide groove, 22, spindle, 3, lower disc, 31, connecting plate, 4, radial expansion mechanism, 41, fixed ring, 411, upper ring, 412, lower ring, 4121, guide rod, 42, first radial link, 421, upper link, 422, lower link, 43, expansion push rod, 431, upper push rod, 432, lower push rod, 44, roller, 441, upper cylinder, 442, lower cylinder, 443, plug-in shaft, 5, expansion drive mechanism, 51, roller, 511, limit hole, 52, rotary cylinder, 521, cylinder, 522, piston, 523, first piston rod, 524, second piston rod, 525, arc spring, 526, air tap, 6, auxiliary supporting mechanism, 61, sliding ring, 62, second radial link, 63, expansion push plate, 64, transmission rod, 65, round shaft, 66, two-way memory spring, 7, locking mechanism, 71, lock ring, 72, lock tongue, 721, riser, 722, diaphragm, 73, telescoping control, 731, mounting plate, 732, electromagnet, 733, permanent magnet, 8, rotary driving mechanism, 81, servo motor, 82, first bevel gear, 83, second bevel gear.

Detailed Description

The following describes specific embodiments of the invention with reference to the drawings and examples:

it should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, which is defined by the appended claims.

Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.

Example 1

With reference to fig. 1-16, this embodiment provides a tire stacking device, including the last disc 1 that links to each other with the arm, the lower terminal surface coaxial of going up disc 1 is equipped with central pole 2, the lower terminal surface coaxial coupling of central pole 2 is disc 3 down, the diameter of disc 3 is less than the diameter of tire child mouth down, be equipped with radial expansion mechanism 4 on the central pole 2, radial expansion mechanism 4 includes around a plurality of expansion push rods 43 that central pole 2 circumference equidistance set up, be equipped with expansion actuating mechanism 5 on the disc 3 down, expansion actuating mechanism 5 can drive expansion push rod 43 synchronous radial expansion until the butt tire inner wall. In the above technical solution, the expansion push rod 43 and the expansion driving mechanism 5 may be any structure capable of realizing radial expansion under control in the prior art, including but not limited to a telescopic rod structure capable of directly extending or shortening in the radial direction under control, or a push-down radial expansion structure under control, where the electrical elements in the embodiment are all connected to the controller.

The working principle and working process of the embodiment are as follows: in the initial state, the radial expansion mechanism 4 is in a contracted state, when the tire stacking device is used, the mechanical arm moves the tire stacking device to the upper side of a tire and then moves downwards until the lower disc 3 and the radial expansion mechanism 4 are completely arranged in the tire, the expansion driving mechanism 5 drives the expansion push rods 43 to radially expand until all the expansion push rods 43 are abutted against the inner wall of the tire, and the circumference of the expansion push rods 43 are equidistantly arranged and synchronously expanded, so that a circle coaxial with the center rod 2 can be formed after expansion, and the tire can be automatically coaxial with the center rod 2 under the pushing of the expansion push rods 43; after the expansion push rod 43 expands to target parameters, the tire is lifted up through the mechanical arm and transferred to a target stacking position, after stacking is completed, the expansion driving mechanism 5 controls the expansion push rod 43 to radially shrink to an initial state, then the mechanical arm moves up the tire stacking device until the tire is separated from the tire, stacking of the next tire is performed, and the stacked tire can keep a regular coaxial state through the mode. Compared with the prior art that the tire is clamped from the outer side and the bottom of the tire, the tire stacking device directly clamps the tire from the inner side of the tire, has good matching performance with the existing conveying equipment, is only in contact with one tire in the tire stacking process, and cannot be interposed between two adjacent stacked tires, so that friction contact with the adjacent tires in the tire releasing process is avoided, and the situation of unstable stacking or reduced regularity caused by friction contact is avoided.

In a specific technical scheme, as shown in fig. 6, the radial expansion mechanism 4 includes a circular fixing ring 41 coaxially disposed on the central rod 2, a plurality of first radial links 42 are disposed on the circumference of the sidewall of the fixing ring 41 at equal intervals, the first radial links 42 are pivotally connected to one end of an expansion push rod 43, the other end of the expansion push rod 43 is connected to a vertical roller 44, and the expansion driving mechanism 5 can drive the expansion push rod 43 to expand or contract rotationally. In the above technical scheme, the rotary expansion structure is adopted, the expansion driving mechanism 5 drives the expansion push rod 43 to rotate, the expansion push rod is gradually and radially expanded under the rotating state, the tire position can be more gently corrected to be coaxial with the center rod 2, meanwhile, the roller 44 is arranged at the free end of the expansion push rod 43, the roller 44 can be in rolling contact with the inner wall of the tire, the friction resistance is reduced, the contact area between the radial expansion mechanism 4 and the tire is increased, and the grabbing stability is improved.

In a specific technical scheme, an auxiliary supporting mechanism 6 is arranged above the radial expansion mechanism 4, as shown in fig. 9, the auxiliary supporting mechanism 6 comprises a plurality of expansion pushing plates 63 which are arranged around the circumference of the central rod 2 at equal intervals, a transmission rod 64 connected with the expansion pushing plates 43 is vertically arranged on the expansion pushing plates 63, the expansion pushing plates 63 can synchronously stretch along with the expansion pushing plates 43, and in order to further improve the supporting stability of the auxiliary supporting mechanism 6, the length of the expansion pushing plates 63 is smaller than the width of the expansion pushing plates 63 and is larger than the expansion pushing plates 43, and the expansion pushing plates 63 are not radially abutted against the inner wall of a tire after being expanded to a target state. In the above technical scheme, the auxiliary supporting mechanism 6 can support the upper sidewall of the tire, and plays an auxiliary supporting role on the tire. When the expansion push rod 43 radially expands, the expansion push plate 63 rotates synchronously to expand, when the mechanical arm lifts the tire, vertical relative sliding occurs to a certain extent between the tire and the radial expansion mechanism 4 under the action of gravity, in order to reduce the phenomenon, the circular diameter formed after the expansion push rod 43 expands is required to be larger than the inner diameter of the tire, the larger the numerical value difference between the two is, the smaller the sliding phenomenon is, but the corresponding tire is easy to excessively stressed to generate radial deformation, in order to balance the vertical relative sliding and radial deformation phenomenon, the auxiliary support mechanism 6 is arranged above the radial expansion mechanism 4, so that the auxiliary support mechanism directly supports the upper tire wall, and the deformation pressure and the sliding phenomenon of the tire can be simultaneously reduced under the supporting action of the auxiliary support mechanism 6, so that the clamping stability when the tire is grabbed is improved.

In a specific technical solution, as shown in fig. 8, the expansion driving mechanism 5 includes a drum 51 and a rotary cylinder 52 for driving the drum 51 to rotate, the drum 51 is coaxial with the central rod 2, a plurality of limiting holes 511 are provided at equal intervals on the circumference, the expansion push rod 43 freely passes through the limiting holes 511, the drum 44 is located outside the drum 51, and the circumferential length of the limiting holes 511 is consistent with the circumferential length of the expansion push rod 43 in the contracted state. In the above technical solution, as shown in the present embodiment, the drum 51 may be directly rotatably connected to the lower disc 3, or may not contact the lower disc 3, and the vertical positioning may be performed by expanding the push rod 43 and the rotary cylinder 52. As shown in fig. 4, when the drum 51 is rotated by the rotary cylinder 52, the expansion push rod 43 is pushed to rotate, so that the expansion push rod 43 radially expands, the circumferential length of the limiting hole 511 is identical to the circumferential length of the expansion push rod 43 in the limiting hole 511 in the contracted state (i.e., initial state), and the rotation driving efficiency can be improved.

The rotary cylinder 52 may be provided directly in a conventional configuration in the art, and this embodiment provides a structure that enables it to be better integrated with the overall structure. The specific technical scheme is as follows,

the rotary cylinder 52 comprises a circular arc-shaped cylinder 521 coaxially fixed on the upper end surface of the lower disc 3, a piston 522 is arranged in an inner cavity of the cylinder 521, one side of the piston 522 is connected with a circular arc-shaped first piston rod 523, the other side of the piston 522 is connected with a circular arc-shaped second piston rod 524, one side, close to the first piston rod 523, of the cylinder 521 is provided with an air tap 526 connected with an air source, an arc-shaped spring 525 is sleeved on the second piston rod 524, one end of the arc-shaped spring 525 is fixed in the inner cavity of the cylinder 521, the other end of the arc-shaped spring is connected with the piston 522, and free ends of the first piston rod 523 and the second piston rod 524 are respectively connected with the rotary drum 51. In the above technical scheme, the rotary cylinder 52 is coaxially arranged on the outer side of the rotary drum 51, so that the overall structure is compact, and the disassembly and the overhaul are convenient.

In a specific technical scheme, as shown in fig. 9, the auxiliary supporting mechanism 6 includes a circular sliding ring 61 coaxially slidably disposed on the central rod 2, a plurality of second radial links 62 are disposed on the circumference of the outer side wall of the sliding ring 61 at equal intervals, the second radial links 62 are pivotally connected to one end of the expansion push plate 63 through a circular shaft 65, the top of the circular shaft 65 is connected to the upper disc 1, the bottom is connected to the first radial links 42 and the hinge shaft of the expansion push rod 43, the second radial links 62 and the expansion push plate 63 can both vertically slide along the transmission rod 64 and the circular shaft 65, a two-way memory spring 66 connected to the fixed ring 41 is disposed at the bottom of the sliding ring 61, and a locking mechanism 7 is disposed between the sliding ring 61 and the central rod 2. In the above technical scheme, the top of the transmission rod 64 can be slidably connected with the upper disc 1, and also can be in clearance arrangement with the upper disc 1, so that the transmission rod 64 can be ensured not to be interfered with to synchronously rotate along with the expansion push rod 43, and the expansion push plate 63 is ensured not to be separated from the transmission rod 64.

In the initial state, the two-way memory spring 66 is in a contracted state, the locking mechanism 7 is in an unlocked state, when the expansion push rod 43 radially expands, the expansion push plate 63 synchronously rotates under the transmission action of the transmission rod 64, and the expansion push plate 63 is converted from the contracted state to the expanded state, and the two-way memory spring 66 is in the contracted state at this time, so that the expansion push plate 63 connected with the sliding ring 61 can be pulled to be far away from the upper side wall of the tire, and friction resistance is avoided in the expansion process; when the expansion push rod 43 expands to be consistent with the inner diameter of the tire, the two-way memory spring 66 is electrified to extend, the two-way memory spring 66 pushes the sliding ring 61 to move upwards until the sliding ring 61 is abutted against the upper sidewall of the tire, the locking mechanism 7 locks the sliding ring 61 and the central rod 2, at the moment, the expansion push plate 63 is in a fixed supporting state on the upper sidewall of the tire, when the tire is lifted up by the mechanical arm, vertical sliding cannot be generated between the tire and the radial expansion mechanism 4, and meanwhile, the round formed by the expansion push rod 43 is consistent with the inner diameter of the tire, and the tire cannot be radially deformed. The locking mechanism 7 may take any suitable configuration known in the art capable of locking the sliding ring 61 and the central rod 2 under control.

In a specific technical scheme, as shown in fig. 3, the locking mechanism 7 includes a locking ring 71, a locking tongue 72 and a telescopic control 73, the locking ring 71 is fixedly arranged on an inner annular wall of the sliding ring 61 and can vertically slide along the central rod 2, the locking tongue 72 includes a vertical plate 721 and a plurality of horizontal plates 722 arranged on the vertical plate 721, a distance between two adjacent horizontal plates 722 is consistent with a height of the locking ring 71, a locking tongue groove 211 is arranged in the central rod 2, the locking tongue 72 and the telescopic control 73 are arranged in the locking tongue groove 211, and the telescopic control 73 can control the locking tongue 72 to radially extend out of the central rod 2 so as to lock or unlock the locking ring 71. In the above technical solution, the transverse plates 722 are vertically arranged at intervals, so that the locking requirements for different heights can be better met. In the initial state, the telescopic control 73 controls the lock tongue 72 to be accommodated in the lock tongue groove 211, the locking mechanism 7 is in an unlocking state, the lock ring 71 can slide along the axial direction of the central rod 2 along with the sliding ring 61, and when locking is needed, the telescopic control 73 controls the lock tongue 72 to extend out of the lock tongue groove 211 in the radial direction, so that the lock ring 71 is clamped between two adjacent transverse plates 722 to form a stable locking structure. Telescoping control 73 includes, but is not limited to, a pneumatic or electromagnetic control structure.

In a specific technical solution, the inner annular wall of the locking ring 71 and the free end of the transverse plate 722 are both circular arc-shaped, the telescopic control 73 comprises an installation plate 731 arranged at the center of the locking bolt slot 211, an electromagnet 732 is arranged on the installation plate 731, the two locking bolts 72 are symmetrically arranged at two sides of the installation plate 731, and a permanent magnet 733 which is attracted with the electromagnet 732 in an initial state is arranged on the vertical plate 721; the tongue slot 211 includes an axial slot 2111 that receives the tongue 72 and telescoping control 73, and a radial hole 2112 through which the cross plate 722 slides. In the above technical solution, the inner annular wall of the locking ring 71 and the free end of the transverse plate 722 are arc-shaped, which can guide the plugging and locking of the two, thereby facilitating the plugging and locking of the locking ring 71 and the locking tongue 72 and increasing the process latitude. In the initial state, as shown in fig. 3, the permanent magnet 733 attracts the electromagnet 732, so that the lock tongue 72 is completely accommodated in the lock tongue groove 211, and in the locked state, as shown in fig. 12, the electromagnet 732 is energized to change its magnetic pole, so that the permanent magnet 733 repels the electromagnet 732, and the lock tongue 72 is pushed to extend radially out of the lock tongue groove 211 by the repulsive force, so as to be locked with the lock ring 71. The radial holes 2112 only used for the transverse plate 722 to pass through are arranged on the lock tongue groove 211, so that the lock tongue 72 can be limited, and the lock tongue 72 is prevented from completely falling out of the lock tongue groove 211 under the repulsive force.

In a specific embodiment, as shown in fig. 7, the fixing ring 41 includes an upper ring 411 and a lower ring 412 disposed at equal intervals, the first radial link 42 includes an upper link 421 connected to the upper ring 411 and a lower link 422 connected to the lower ring 412, the expansion push rod 43 includes an upper push rod 431 pivotally connected to the upper link 421 and a lower push rod 432 pivotally connected to the lower link 422, the roller 44 is connected to the upper push rod 431 and the lower push rod 432, respectively, and the lower push rod 432 passes through the limiting hole 511. In the above technical scheme, the upper push rod 431, the lower push rod 432 and the roller 44 form a frame type rotating structure, so that the connection and the rotating stability of the roller 44 are improved, in addition, due to the frame type rotating structure, the integral synchronous rotation of the upper push rod 431, the lower push rod 432 and the roller 44 can be realized only by the lower push rod 432 penetrating through the limiting hole 511, the vertical height of the rotary drum 51 is greatly reduced, and the manufacturing cost is reduced.

In a specific technical solution, as shown in fig. 2, the center rod 2 includes a center rod body 21, a thread groove 212 is disposed at the center of the lower end surface of the center rod body 21, the thread groove 212 is in threaded connection with a rotation shaft 22, the rotation shaft 22 is rotatably connected with the lower disc 3, a rotation driving mechanism 8 for driving the rotation shaft 22 to rotate is disposed on the lower disc 3, a connection plate 31 connected with the lower ring 412 is disposed on the lower disc 3, the upper ring 411 is fixedly connected with the center rod body 21, the lower ring 412 is rotatably connected with the rotation shaft 22, the roller 44 includes an upper cylinder 441 connected with an upper push rod 431 and a lower cylinder 442 connected with a lower push rod 432, and the diameters of the upper cylinder 441 and the lower cylinder 442 are the same and are connected in series in a sliding insertion manner through an insertion shaft 443. In the above technical scheme, the central rod 2 can stretch out and draw back along the vertical direction, and the whole length of the roller 44 is increased or reduced, so as to improve the application range of tires of different types, the upper end surface of the lower circular ring 412 is preferably provided with a plurality of guide rods 4121 at equal intervals, and the lower end surface of the central rod body 21 is provided with a guide groove 213 corresponding to the guide rods 4121, so as to further improve the stretching stability of the central rod 2. When a small tire having a small width (i.e., a height when placed horizontally) is required to be held, the rotation driving mechanism 8 drives the rotation shaft 22 to rotate, and since the center rod body 21 is fixedly connected to the upper disc 1, the rotation shaft 22 can be rotated deep into the screw groove 212, shortening the center rod 2, bringing the upper cylinder 441 and the lower cylinder 442 closer to each other, and shortening the drum 44 to a size corresponding to the width of the small tire. When a large tire having a large width needs to be clamped, the rotation driving mechanism 8 drives the rotation shaft 22 to rotate reversely, and the center rod 2 and the drum 44 are elongated in the same manner until the width of the large tire is adapted. The rotary driving mechanism 8 may adopt any suitable driving structure in the prior art, in this embodiment, the rotary driving mechanism 8 includes a servo motor 81, an output end of the servo motor 81 is connected with a first bevel gear 82, a second bevel gear 83 meshed with the first bevel gear 82 is disposed on the rotating shaft 22, and the servo motor 81 is disposed on the connecting plate 31.

Example 2

With reference to fig. 1-16, this embodiment provides a method for using a tire stacking device, including the following steps:

step S100, installation: the upper disc 1 is fixedly connected with the mechanical arm, the expansion driving mechanism 5 is connected with the controller, and the radial expansion mechanism 4 is in a contracted state in an initial state;

step S200, grabbing the tire: the mechanical arm moves the tire stacking device to the upper part of the tire and then moves downwards until the lower disc 3 and the radial expansion mechanism 4 are completely arranged in the tire, the expansion driving mechanism 5 drives the expansion push rods 43 to radially expand until all the expansion push rods 43 are abutted against the inner wall of the tire, and in the process, the tire can be automatically coaxial with the center rod 2 under the pushing of the expansion push rods 43;

step S300, stacking tires: lifting the tires through a mechanical arm, transferring the tires to a target stacking position, and coaxially stacking the tires with other tires; the expansion driving mechanism 5 controls the expansion push rod 43 to radially shrink to an initial state, and then the mechanical arm moves the tire stacking device up until the tire is separated;

step 400, repeating the steps from step 100 to step 300, and stacking the next tire.

The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the scope of the present invention.

Claims (9)

1. The utility model provides a tire pile up neatly device, includes upper disc (1) that links to each other with the arm, a serial communication port, the lower terminal surface coaxial of upper disc (1) is equipped with central pole (2), the lower terminal surface coaxial coupling of central pole (2) is disc (3) down, the diameter of disc (3) is less than the diameter of tire child mouth down, be equipped with radial expansion mechanism (4) on central pole (2), radial expansion mechanism (4) include around a plurality of expansion push rods (43) that central pole (2) circumference equidistance set up, be equipped with expansion actuating mechanism (5) on disc (3) down, expansion actuating mechanism (5) can drive expansion push rods (43) synchronous radial expansion until the butt tire inner wall;

the top of radial expansion mechanism (4) is equipped with auxiliary stay mechanism (6), auxiliary stay mechanism (6) include around a plurality of expansion push pedal (63) that center pole (2) circumference equidistance set up, vertically on expansion push pedal (63) be equipped with transfer line (64) that expansion push rod (43) are connected, expansion push pedal (63) can be along with expansion push rod (43) synchronous flexible, the length of expansion push pedal (63) is less than and the width is greater than expansion push rod (43).

2. Tyre palletizing device according to claim 1, characterized in that the radial expansion mechanism (4) comprises a circular fixing ring (41) coaxially arranged on the central rod (2), a plurality of first radial connecting rods (42) are arranged on the circumference of the side wall of the fixing ring (41) at equal intervals, one end of an expansion push rod (43) is connected with the first radial connecting rods (42) in a pivot manner, the other end of the expansion push rod (43) is connected with a vertical roller (44), and the expansion driving mechanism (5) can drive the expansion push rod (43) to expand or contract in a rotary manner.

3. Tyre palletizing device according to claim 2, characterized in that the expansion driving mechanism (5) comprises a rotary drum (51) and a rotary cylinder (52) for driving the rotary drum (51) to rotate, the rotary drum (51) is coaxial with the central rod (2), a plurality of limit holes (511) are formed in circumference equidistance, the expansion push rod (43) freely passes through the limit holes (511), the rotary drum (44) is located on the outer side of the rotary drum (51), and the circumferential length of the limit holes (511) is consistent with the circumferential length of the expansion push rod (43) in a contracted state.

4. A tyre palletizing device according to claim 3, characterized in that the auxiliary supporting mechanism (6) comprises a circular sliding ring (61) coaxially and slidably arranged on the central rod (2), a plurality of second radial connecting rods (62) are circumferentially and equidistantly arranged on the outer side wall of the sliding ring (61), the second radial connecting rods (62) are pivotally connected with one end of the expansion pushing plate (63) through a circular shaft (65), the top of the circular shaft (65) is connected with the upper disc (1), the bottom of the circular shaft is connected with the first radial connecting rods (42) and the hinge shaft of the expansion pushing rod (43), the second radial connecting rods (62) and the expansion pushing plate (63) can vertically slide along the transmission rod (64) and the circular shaft (65), a two-way memory spring (66) connected with the fixed ring (41) is arranged at the bottom of the sliding ring (61), and a locking mechanism (7) is arranged between the sliding ring (61) and the central rod (2).

5. Tyre palletizing device according to claim 4, characterized in that the locking mechanism (7) comprises a locking ring (71), a locking tongue (72) and a telescopic control (73), the locking ring (71) is fixedly arranged on the inner annular wall of the sliding ring (61) and can vertically slide along the central rod (2), the locking tongue (72) comprises a vertical plate (721) and a plurality of transverse plates (722) arranged on the vertical plate (721), the distance between two adjacent transverse plates (722) is consistent with the height of the locking ring (71), a locking tongue groove (211) is arranged in the central rod (2), the locking tongue (72) and the telescopic control (73) are arranged in the locking tongue groove (211), and the telescopic control (73) can control the locking tongue (72) to radially extend out of the central rod (2) so as to lock or unlock the locking ring (71).

6. Tyre palletizing device according to claim 5, characterized in that the inner annular wall of the locking ring (71) and the free end of the transverse plate (722) are both circular arc-shaped, the telescopic control (73) comprises a mounting plate (731) arranged at the center of the lock tongue groove (211), an electromagnet (732) is arranged on the mounting plate (731), two lock tongues (72) are symmetrically arranged on two sides of the mounting plate (731), and a permanent magnet (733) which is attracted with the electromagnet (732) in the initial state is arranged on the vertical plate (721); the tongue slot (211) includes an axial slot (2111) that accommodates the tongue (72) and telescoping control (73), and a radial hole (2112) through which the cross plate (722) slides.

7. Tyre palletizing device according to claim 6, characterized in that the fixed ring (41) comprises an upper ring (411) and a lower ring (412) arranged at equal intervals, the first radial link (42) comprises an upper link (421) connected to the upper ring (411) and a lower link (422) connected to the lower ring (412), the expansion push rod (43) comprises an upper push rod (431) pivotally connected to the upper link (421) and a lower push rod (432) pivotally connected to the lower link (422), the roller (44) is connected to the upper push rod (431) and the lower push rod (432) respectively, and the lower push rod (432) passes through the limiting hole (511).

8. Tyre palletizing device according to claim 7, characterized in that the central rod (2) comprises a central rod body (21), a thread groove (212) is arranged in the center of the lower end face of the central rod body (21), the thread groove (212) is in threaded connection with a rotating shaft (22), the rotating shaft (22) is rotatably connected with the lower disc (3), a rotary driving mechanism (8) for driving the rotating shaft (22) to rotate is arranged on the lower disc (3), a connecting plate (31) connected with the lower ring (412) is arranged on the lower disc (3), the upper ring (411) is fixedly connected with the central rod body (21), the lower ring (412) is rotatably connected with the rotating shaft (22), the roller (44) comprises an upper cylinder (441) connected with an upper push rod (431) and a lower cylinder (442) connected with a lower push rod (432), and the diameters of the upper cylinder (441) and the lower cylinder (442) are identical and are connected in series in a sliding insertion manner through an insertion shaft (443).

9. A method of using a tire palletizing apparatus as in claim 8, comprising the steps of:

step S100, installation: the upper disc (1) is fixedly connected with the mechanical arm, the expansion driving mechanism (5) is connected with the controller, and the radial expansion mechanism (4) is in a contracted state in an initial state;

step S200, grabbing the tire: the mechanical arm moves the tire stacking device to the upper part of the tire and then moves downwards until the lower disc (3) and the radial expansion mechanism (4) are completely arranged in the tire, the expansion driving mechanism (5) drives the expansion push rods (43) to radially expand until all the expansion push rods (43) are abutted against the inner wall of the tire, and in the process, the tire can be automatically coaxial with the center rod (2) under the pushing of the expansion push rods (43);

step S300, stacking tires: lifting the tires through a mechanical arm, transferring the tires to a target stacking position, and coaxially stacking the tires with other tires; the expansion driving mechanism (5) controls the expansion push rod (43) to radially shrink to an initial state, and then the mechanical arm moves the tire stacking device upwards until the tire is separated from the tire;

step 400, repeating the steps from step 100 to step 300, and stacking the next tire.