Tire unloading mechanism of tire vulcanizing machine

Abstract

The utility model provides a tire unloading mechanism of a tire vulcanizing machine, which comprises a rack and overturning roller ways positioned on two sides of the rack and used for supporting tires, guide rail plates and connecting rods are symmetrically arranged on the left side and the right side of the rack, and one ends of the left connecting rod and the right connecting rod are coaxially hinged to one sides, far away from the rack, of the left guide rail plate and the right guide rail plate through gear shafts. The other ends of the left and right connecting rods are connected with the overturning roller way on the same side; a power cylinder and a sector gear meshed with a gear part on the gear shaft are rotationally mounted between the left guide rail plate and the right guide rail plate, one end of a connecting arm is hinged to the tail end of a piston rod of the power cylinder, and the other end of the connecting arm is fixedly connected with the sector gear, so that the sector gear can be driven to rotate when the piston rod telescopically moves; the left guide rail plate and the right guide rail plate are each provided with an arc-shaped rail groove with an upward opening, and the overturning roller way can only overturn and move along the rail grooves under driving of the connecting rods. The tire unloading device is simple in structure and convenient to operate, the manufacturing cost, the running cost and the like of the tire unloading device can be reduced, the tire unloading speed can be higher, and therefore the working efficiency of tire unloading is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire vulcanizers, and particularly relates to a tire unloading mechanism of a tire vulcanizer. Background Art

[0002] The tire unloading mechanism is an important component of a tire vulcanizer. Since the temperature of the tire just vulcanized in the vulcanization chamber is very high and the tire is heavy, in order to enable the tire to be detached from the vulcanizer and transported to the work station of the post-inflation device for inflation and cooling and shaping treatment, the tire vulcanizer needs to be equipped with a tire unloading mechanism, and the tire is unloaded from the central mechanism of the vulcanizer and transferred to devices such as a conveyor belt and a roller path for moving by operating the tire unloading mechanism. Against the background of the continuous upgrading and transformation of the vulcanizer structure, a tire unloading mechanism with a more lightweight structure, higher efficiency, reliable operation and convenient maintenance is particularly important.

[0003] Currently, the tire unloading mechanism usually adopts such as Figure 12The structure shown mainly includes a frame 1, a turning arm 13, a translation water cylinder 14, a turning water cylinder 15, a guide shaft 16, and a support foot 17. Initially, the frame 1, the turning water cylinder 15, and the turning arm 13 are all above and away from the central mechanism 10 of the vulcanizer. The turning arm 13 is located between the front central mechanism 10 and the rear connecting roller path 12. After the tire vulcanization process is completed, the mold of the vulcanizer is opened. The central mechanism 10 of the vulcanizer removes the vulcanized tire 9 from the lower mold and drives it to rise to a certain height. Then, the translation water cylinder 14 drives the frame 1, the turning water cylinder 15, and the turning arm 13 fixedly connected thereto to move as a whole along the guide shaft 16 in the direction close to the central mechanism 10, so that the turning arm 13 is located below the tire 9 to be unloaded and supports the tire 9. Then, the central mechanism 10 descends. Under the supporting action of the turning arm 13, the tire 9 disengages from the central mechanism 10 and stays on the turning arm 13. Subsequently, the turning water cylinder 15 drives the turning arm 13 to rise vertically, lifting the tire 9. After reaching a certain height and reaching the mechanical limit, the turning water cylinder 15 drives the turning arm 13 to turn and tilt backward away from the central mechanism 10, so that the turning arm 13 is obliquely aligned with the rear connecting roller path 12. The tire 9 slides backward along the turning arm 13 under the action of gravity and falls onto the connecting roller path 12. The connecting roller path 12 moves the tire 9 to the post-inflation device for inflation and cooling treatment. After one tire unloading is completed, the turning water cylinder 15 drives the turning arm 13 to turn back to the horizontal state and move downward, and the translation water cylinder 14 drives the turning arm 13 and other components to translate back to the initial position, waiting for the next tire unloading. Although the above structure can achieve the purpose of tire unloading, it is necessary to use two different water cylinders to drive the turning arm to perform reciprocating motions of linear translation, rising, and turning successively. Therefore, at least two water cylinders and the like need to be set on the tire unloading mechanism as power sources, and corresponding power water pipelines and inlet and outlet water control valves need to be configured for them, and multiple guide shafts need to be set to guide the turning arm and the like to perform linear movement. The control electric cabinet of the tire unloading mechanism also needs to set more electrical controls. These will increase the manufacturing, operation, and maintenance costs of the overall equipment, and its structure is relatively complex. During the above-mentioned one-time tire unloading process, multiple sets of devices need to be controlled and operated to perform corresponding steps respectively, which makes it inconvenient for the operators. Moreover, each step requires a relatively long response time to complete its action and determine the execution situation, resulting in a relatively long time for the entire tire unloading process and low working efficiency, which will affect the progress of the vulcanizer process. Summary of the Invention

[0004] The purpose of the present invention is to provide a tire unloading mechanism for a tire vulcanizer, which has a simple structure, is convenient to operate, can reduce its manufacturing, operation, etc. costs, and can make its tire unloading speed faster, thereby improving the tire unloading work efficiency.

[0005] A tire demounting mechanism for a tire vulcanizer, comprising a frame, and turning roller tracks located on both sides of the frame for supporting the tire. Guide plates and connecting rods are symmetrically arranged on the left and right sides of the frame. One end of the left and right connecting rods is coaxially hinged to the side of the left and right guide plates away from the frame through a gear shaft, and the other end of the left and right connecting rods is connected to the turning roller track on the same side;

[0006] The gear shaft is located between the left and right guide plates. A power cylinder and a sector gear meshing with the gear part on the gear shaft are rotatably installed between the left and right guide plates. One end of a connecting arm is hinged to the end of the piston rod of the power cylinder, and the other end of the connecting arm is fixedly connected to the sector gear, so that when the piston rod expands and contracts, it can drive the sector gear to rotate; the length of the connecting arm is greater than the radius of the sector gear, and the radius of the sector gear is greater than the radius of the gear part on the gear shaft;

[0007] Arc-shaped track grooves with openings facing upward are provided on the sides of the left and right guide plates away from the frame. One end of the turning roller track on each side is fixedly connected to a roller shaft, and the other end of the roller shaft slides in the track groove on the same side, so that the turning roller track can only be turned and moved along the track groove under the drive of the connecting rod.

[0008] Preferably, each side of the turning roller track includes a turning frame and two roller support arms installed on the turning frame; the turning frame includes a fixed pipe. One end of the fixed pipe is fixedly connected to the roller shaft. A first support plate, a second support plate, a third support plate, and a fourth support plate are fixedly installed on the fixed pipe in sequence from the side close to the frame to the side away from the frame. A plurality of long roller cylinders are rotatably installed between the first support plate and the fourth support plate above the fixed pipe. A first shaft pin is installed between the first support plate and the second support plate, and a second shaft pin is installed between the third support plate and the fourth support plate. The first shaft pin is fixedly connected to the connecting rod on the same side;

[0009] The roller support arm includes a support and side plates on both sides of the support. One end of each of the two side plates is fixedly connected to the support. A plurality of roller shafts are rotatably installed between the two side plates. Rollers are connected to both ends of the roller shafts. The two roller support arms are respectively installed on the first shaft pin and the second shaft pin.

[0010] Preferably, mounting holes penetrating the support are provided on both of the two roller support arms and are respectively adapted to be sleeved on the first shaft pin and the second shaft pin, so that the two roller support arms are respectively slidably installed on the first shaft pin and the second shaft pin.

[0011] Preferably, a semi-circular groove adapted to the fixed pipe is provided on the support of the roller support arm. When the semi-circular groove is adapted and abutted against the fixed pipe, the upper surfaces of the turning frame and the roller support arm near the connection are in the same plane.

[0012] Preferably, the frame is provided with a proximity switch, and the connecting arm also includes a blocking part cooperating with the proximity switch. When the piston rod telescopes and moves to drive the connecting arm to swing, the blocking part moves accordingly and can pass through the position of the proximity switch and sense the proximity switch, and the working state of the power cylinder is controlled by a controller electrically connected to the proximity switch.

[0013] The tire unloading mechanism of the tire vulcanizer described in the utility model is that when the piston rod on the power cylinder is retracted inwardly or extended outwardly along the cylinder body, the piston rod drives the connecting arm hinged to its end to swing relative to the piston rod, and the cylinder body of the power cylinder is also adaptively rotated by a certain angle, so that the fan-shaped gear fixedly connected to the other end of the connecting arm can rotate around its rotation center axis, and because the length of the connecting arm is greater than the radius of the fan-shaped gear, according to the principle of lever, the process of the power cylinder driving the connecting arm to move and then rotating the fan-shaped gear will be more labor-saving; the fan-shaped gear rotates as a driving wheel and meshes with the fan-shaped gear The gear part on the gear shaft is used as the driven wheel. The gear shaft can rotate in the opposite direction under the drive of the sector gear. Since the radius of the sector gear is larger than the radius of the gear on the gear shaft, the gear shaft can rotate in a larger angle range relative to the sector gear. The rotation of the gear shaft can drive the connecting rods on both sides to rotate in the same direction, so that the flip roller connected to the connecting rod also moves accordingly. Since the rollers fixedly connected to the flip rollers on each side slide in the track groove on the same side, the flip rollers can only flip along the arc-shaped track groove under the drive of the connecting rod. Therefore, the position of the flip roller in the track groove can be changed by controlling the extension and contraction degree of the piston rod on the power cylinder to change the flip state of the flip roller. Since the gear shaft can rotate in a larger angle range relative to the sector gear, the smaller extension and contraction range of the piston rod in the power cylinder can be adapted to the larger angle range of the roller in the track groove by setting the appropriate size, so as to ensure that the flip roller can flip and move to the flip state required for tire unloading.

[0014] During use, the tipping roller paths on both sides of the tire unloading mechanism are positioned between the central mechanism of the vulcanizer in the front and the connecting roller path in the rear. When the tire is vulcanized in the vulcanizing chamber, the tipping roller paths can be positioned at one end of the arc-shaped track groove away from the central mechanism. At this time, the plane corresponding to the tipping roller paths tilts forward and away from the connecting roller path, serving as the initial position, waiting for mold opening and tire unloading. When the tire vulcanization is completed and the central mechanism removes the vulcanized tire from the lower mold and raises it, by controlling the power cylinder, the tipping roller paths are driven to flip and move along the track groove towards the central mechanism with the roller shafts from the initial position, so that their planes are in a horizontal state and reach below the tire to be unloaded on the central mechanism, serving as the horizontal tire supporting position. Subsequently, the central mechanism descends, and the tipping roller paths can receive and support the tire from below the central mechanism, enabling the tire to disengage from the central mechanism and stay on the plane of the tipping roller paths. After the tire is completely disengaged from the central mechanism, by controlling the power cylinder, the tipping roller paths continue to flip and move along the track groove towards the central mechanism with the roller shafts from the horizontal tire supporting position, causing the plane of the tipping roller paths to tilt backward and obliquely align with the connecting roller path behind it, serving as the inclined tire unloading position. Under the action of gravity, the tire slides backward along the tipping roller paths onto the connecting roller path, and the connecting roller path transports the tire to the subsequent process for processing. After one tire unloading is completed, the power cylinder drives the tipping roller paths to flip and move in the opposite direction along the track groove away from the central mechanism, returning to the initial position, waiting for the next tire unloading operation.

[0015] Therefore, the tire unloading mechanism provided by the present utility model uses a single power cylinder as the power source, which sequentially drives the connecting arm, sector gear, gear shaft, and connecting rod to rotate, thereby driving the movement of the tipping roller paths. By setting the length of the connecting arm to be greater than the radius of the sector gear, it is more labor-saving for the power cylinder to drive the sector gear to rotate via the connecting arm. Since the radius of the sector gear is greater than the radius of the gear part on the gear shaft, the gear shaft can rotate within a larger angle range relative to the sector gear, enabling the tipping angle range of the tipping roller paths to meet the requirements of tire unloading. And through the cooperation between the arc-shaped track groove on the guide rail plate and the roller shafts slidably placed therein, the tipping roller paths can move and flip smoothly along with the track groove, entering different flipping states, achieving the purpose of stable tire unloading to realize the corresponding tire unloading work of the tire unloading mechanism. By using a single power cylinder to control the operation of the tire unloading mechanism, its structure is simpler, eliminating many unnecessary equipment devices, thereby making the operation of the operators more convenient and reducing the manufacturing, operation, and maintenance costs of the overall equipment. And with the above structure, the various flipping states of the tipping roller paths can be coherently switched by controlling the power cylinder, and its movement and flipping process are stable and labor-saving, capable of shortening the time required for each tire unloading operation, improving the work efficiency of tire unloading, and thus accelerating the processing process of the vulcanizer for the tire. Description of the Drawings

[0016] The following further describes the present utility model in conjunction with the drawings:

[0017] Figure 1 It is an axonometric view of a tire demolding mechanism of the utility model (one side of the turning roller table is omitted);

[0018] Figure 2 It is a side view of a tire demolding mechanism of the utility model;

[0019] Figure 3 It is a schematic top view structure diagram of the utility model (one side of the turning roller table is omitted);

[0020] Figure 4 is Figure 3 A schematic internal structure diagram of the frame along the A-A direction;

[0021] Figure 5 is Figure 3 A schematic structure diagram of the turning roller table along the B-B direction;

[0022] Figure 6 It is a schematic structure diagram of the turning roller table of the utility model in the initial position;

[0023] Figure 7 is Figure 6 A front view schematic diagram (one side of the turning roller table is omitted);

[0024] Figure 8 It is a schematic structure diagram of the turning roller table of the utility model in the horizontal tire towing position;

[0025] Figure 9 is Figure 8 A front view schematic diagram (one side of the turning roller table is omitted);

[0026] Figure 10 It is a schematic structure diagram of the turning roller table of the utility model in the inclined tire demolding position;

[0027] Figure 11 is Figure 10 A front view schematic diagram (one side of the turning roller table is omitted);

[0028] Figure 12 It is a schematic structure diagram of the existing tire demolding mechanism.

[0029] Reference numerals: 1 - frame; 2 - guide rail plate; 21 - track groove; 22 - roller; 3 - connecting rod; 4 - tilting roller table; 41 - tilting frame; 411 - first support plate; 412 - second support plate; 413 - third support plate; 414 - fourth support plate; 42 - roller frame support arm; 43 - fixed pipe; 44 - long roller; 45a - first pin; 45b - second pin; 46 - support; 461 - mounting hole; 47 - side plate; 48 - roller; 48a - roller shaft; 49 - semi-circular groove; 5 - power cylinder; 51 - piston rod; 6 - connecting arm; 61 - blocking portion; 7 - sector gear; 8 - gear shaft; 81 - gear portion; 9 - tire; 10 - central mechanism; 11 - proximity switch; 12 - connecting roller table; 13 - tilting arm; 14 - translation water cylinder; 15 - tilting water cylinder; 16 - guide shaft; 17 - support foot; 18 - U-bolt. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art based on the present invention fall within the scope of protection of the present invention. Without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, end, inside, outside, horizontal, vertical, counterclockwise, clockwise, radial, axial, etc.) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings), and are only for the convenience of describing the present invention and simplifying the description. If the specific posture changes, the directional indications will also change accordingly. Therefore, it should not be construed as a limitation to the present invention. In the description of the embodiments, unless otherwise clearly specified and limited, terms such as "installation" and "connection" should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of the present invention, terms such as "first" and "second" are used to distinguish one element from another element, and do not have sequence and importance; the meaning of "a plurality" is two or more, unless otherwise clearly specifically limited.

[0032] As Figures 1 to 11As shown, the utility model provides a tire unloading mechanism for a tire vulcanizer, comprising a frame 1, and a turning roller 4 located on both sides of the frame 1 for holding up a tire 9, the left and right sides of the frame 1 are also symmetrically provided with guide rail plates 2 and connecting rods 3, one end of the left and right connecting rods 3 are coaxially hinged to the left and right guide rail plates 2 away from the frame 1 through a gear shaft 8, and the other end of the left and right connecting rods 3 are connected to the turning roller 4 on the same side; the gear shaft 8 is located between the left and right guide rail plates 2, and a power cylinder 5 and a sector gear 7 meshing with a gear portion 81 on the gear shaft 8 are also rotatably installed between the left and right guide rail plates 2, and one end of the connecting arm 6 is connected to the gear shaft 81 on the left and right guide rail plates 2. The end of the piston rod 51 of the power cylinder 5 is hinged, and the other end of the connecting arm 6 is fixedly connected to the fan gear 7, so that the piston rod 51 can drive the fan gear 7 to rotate when it is telescopically moved; the length of the connecting arm 6 is greater than the radius of the fan gear 7, and the radius of the fan gear 7 is greater than the radius of the gear part 81 on the gear shaft 8; the left and right guide plates 2 are both provided with an arc-shaped track groove 21 with an opening facing upward on the side away from the frame 1, and the turning roller 4 on each side is fixedly connected to one end of the roller 22, and the other end of the roller 22 is slidably placed in the track groove 21 on the same side, so that the turning roller 4 can only turn and move along the track groove 21 under the drive of the connecting rod 3.

[0033] The left and right guide plates 2 can be installed on both sides of the frame 1 by screws and cylindrical pins, and the guide plates 2 will bear the weight of the gear shaft 8, the connecting rod 3 and the turning roller 4. The gear shaft 8 is installed on the guide plates 2 on both sides, and its shaft part and the gear part 81 are integrally processed to form an integrated structure, so that the two are closely matched with each other to ensure good transmission performance; the two end faces of the gear shaft 8 are provided with keyways with the same orientation and capable of satisfying the output torque required for turning the turning roller 4; the left and right connecting rods 3 are symmetrically arranged, and the rotating center holes at their ends are provided with keys that match the keyways of the gear shaft 8, so that the gear shaft 8 is connected to the left and right connecting rods 3 by the key and keyway adaptation mode, and the connecting rod 3 is driven to rotate by the key, so that the left and right connecting rods 3 are connected to the gear shaft 8 and the connecting rods 3 are in the same direction, and can rotate coaxially, that is, the connecting rods 3 on both sides are driven by the gear shaft 8 to keep synchronous rotation. The left and right turning rollers 4 are symmetrically arranged on the left and right sides of the frame 1, and the other ends of the left and right connecting rods 3 are respectively connected to the left and right turning rollers 4 on the same side, so that the left and right turning rollers 4 can also keep rotating synchronously, so that the tire unloading work can be carried out synchronously, improving the work efficiency. A reinforcing rib plate can also be arranged on the connecting rod 3 to further improve the stability of the connecting rod 3 at the connection point and reduce the possibility of fracture and deformation at the connection point.

[0034] Reference Figure 4, the gear part 81 on the gear shaft 8 is located between the left and right guide plates 2. A power cylinder 5, a connecting arm 6, and a sector gear 7 meshing with the gear part 81 on the gear shaft 8 are also provided between the left and right guide plates 2. Among them, the power cylinder 5 serves as the power source of the tire unloading mechanism, and specifically, a water cylinder can be adopted. A water pipe is penetrated through the cylinder body, and a controller for controlling the water inlet and outlet of the water pipe is configured; as Figure 1 and Figure 2 shown, the cylinder body is hinged to the left and right guide plates 2 on both sides of it, so that the power cylinder 5 can rotate relative to the left and right guide plates 2. When the piston rod 51 drives the connecting arm 6 to swing, the power cylinder 5 can rotate a certain angle accordingly to adapt to the swinging position of the connecting arm 6 and ensure that the piston rod 51 can drive the connecting arm 6.

[0035] As Figure 4 shown, the length of the connecting arm 6 is greater than the radius of the sector gear 7. The two ends of the connecting arm 6 are respectively hinged to the end of the piston rod 51 and fixedly connected to the sector gear 7. When the piston rod 51 expands and contracts, it can drive the sector gear 7 to rotate through the connecting arm 6. Then, the sector gear 7 drives the gear shaft 8 to rotate, and the rotation of the gear shaft 8 will cause the connecting rods 3 on both sides of it to rotate synchronously. The end of the connecting arm 6 can be connected to the position where the rotation center axis of the sector gear 7 is located. After being fixed and sealed by a cylindrical pin, a non-moving whole is formed between the connecting arm 6 and the sector gear 7, so that the sector gear 7 will not deviate from the gear part 81 on the gear shaft 8 during the rotation with the swing of the connecting arm 6, ensuring the meshing effect between the sector gear 7 and the gear shaft 8.

[0036] Referring to Figure 6 and Figure 7 , the middle part of the gear shaft 8 is in a complete gear shape and is paired with the sector gear 7; the sector gear 7 is configured with a corresponding rotating shaft as its rotation center axis and can be installed on the frame 1 between the left and right guide plates 2 and rotates around its rotation center axis. The radius of the sector gear 7 is greater than the radius of the gear part 81 on the gear shaft 8, that is, the diameter of the complete pitch circle corresponding to the sector gear 7 is greater than the pitch circle diameter of the gear part 81, so that the total number of teeth of the complete gear corresponding to the sector gear 7 is more than the total number of teeth on the gear shaft 8. When the sector gear 7 rotates and drives the gear shaft 8 to rotate, the gear shaft 8 can rotate within a larger angle range relative to the sector gear 7.

[0037] As Figure 1 and Figure 7As shown in the figure, one end of each side roller 22 close to the turnover roller path 4 is fixedly connected to the turnover roller path 4, and the other end is placed in the track groove 21 after installing a rolling bearing and fixed with an elastic retaining ring to prevent the roller 22 from moving axially out of the track groove 21. The roller 22 drives the turnover roller path 4 to move only along the track direction in the track groove 21 and bears part of the weight of the turnover roller path 4 at the same time. When the connecting rod 3 drives the turnover roller path 4 to rotate, the turnover roller path 4 can make multiple turnover actions with different turnover angles along the track groove 21, such as corresponding to the actions of horizontally supporting the tire, obliquely unloading the tire and resetting, so as to realize the corresponding tire unloading work. The track grooves 21 on the left and right guide plates 2 are symmetrically arranged, so that the turnover roller paths 4 on both sides can perform corresponding turnover actions synchronously.

[0038] Specifically, as Figures 1 to 5 shown in the figure, each turnover roller path 4 includes a turnover frame 41 and two roller support arms 42 installed on the turnover frame 41. The turnover frame 41 is welded by a fixed pipe 43 and four support plates to form a stable structure. The fixed pipe 43 can be made of steel pipe. One end of the fixed pipe 43 is fixedly connected to the roller 22. Among them, the roller 22 can be placed in the fixed pipe 43 of the turnover frame 41 in cooperation with a circular ring and fixed with an elastic retaining ring to prevent the roller 22 from moving axially out of the fixed pipe 43; the first support plate 411, the second support plate 412, the third support plate 413, and the fourth support plate 414 are fixedly installed on the fixed pipe 43 in sequence from the side close to the frame 1 to the side far from the frame 1. A plurality of long rollers 44 are rotatably installed between the first support plate 411 and the fourth support plate 414 above the fixed pipe 43, so that the tire can slide above the long rollers 44; round holes are provided on the first support plate 411, the second support plate 412, the third support plate 413, and the fourth support plate 414, and copper sleeves are installed on each round hole. The first shaft pin 45a is adaptively inserted into the round holes on the first support plate 411 and the second support plate 412, so that the first shaft pin 45a is installed between the first support plate 411 and the second support plate 412, and the first shaft pin 45a is fixedly connected to the connecting rod 3 on the same side, so that the turnover frame 41 can move driven by the connecting rod 3. The second shaft pin 45b is adaptively inserted into the round holes on the third support plate 413 and the fourth support plate 414, so that the second shaft pin 45b is installed between the third support plate 413 and the fourth support plate 414. The plane corresponding to the upper part of the turnover frame 41, that is, the upper surfaces of the long rollers 44 can be set to be on the same plane or a relatively continuous plane, so that the tire can slide smoothly above the turnover frame 41. When the turnover roller path 4 performs an inclined tire unloading, the plane above the turnover frame 41 can be aligned with the upper surface of the connecting roller path 12 behind the turnover roller path 4, so that the tire can slide along the turnover frame 41 to the connecting roller path 12, and the connecting roller path 12 performs subsequent moving work.

[0039] Refer to Figure 7, each roller support arm 42 includes a support 46 and side plates 47 located on both sides of the support 46. One end of the two side plates 47 is fixedly connected to the support 46, which can be fixed by welding. A plurality of roller shafts 48a are rotatably installed between the two side plates 47. Both ends of the roller shaft 48a are connected with rollers 48. The tire can slide above the rollers 48. The two roller support arms 42 are respectively installed on the first pin 45a and the second pin 45b. The plane corresponding to the upper part of each roller support arm 42, that is, the upper surface of each roller 48, is in the same plane. When the central mechanism 10 raises the vulcanized tire, the two roller support arms 42 are respectively located below both sides of the tire, used to receive and support the tire to be unloaded on the central mechanism 10, and when the tilting roller path 4 tilts to unload the tire, the tire slides above to above the tilting frame 41. The length of each roller 48 on the side of the roller support arm 42 close to the tire to be unloaded can be adjusted. As Figure 3 shown, the rollers 48 between the two roller support arms 42 form a shape approximately similar to that of the tire, so that the contact between the tire and each roller 48 is more sufficient, and phenomena such as tire jamming and tire dropping will not occur.

[0040] Preferably, both of the two roller support arms 42 are provided with mounting holes 461 penetrating through the support 46, and are respectively adapted to be sleeved on the first pin 45a and the second pin 45b, so that the two roller support arms 42 are respectively slidably installed on the first pin 45a and the second pin 45b. The roller support arms 42 can axially move along their respective pins to adjust the distance between the two roller support arms 42, ensuring that the roller support arms 42 can be adapted to tires of different specifications and make full contact with them.

[0041] Preferably, the support 46 of the roller support arm 42 is further provided with a semi-circular groove 49 adapted to the fixed pipe 43. When the semi-circular groove 49 on the roller support arm 42 is adapted and abutted and fixed on the fixed pipe 43, the upper surfaces of the tilting frame 41 and the roller support arm 42 near the connection are in the same plane. As Figure 5As shown, after the mounting hole 461 of the roller frame support arm 42 is sleeved on the first pin 45a or the second pin 45b, the position of the fixed tube 43 of the tilting frame 41 is opposite to that of the semi-circular groove 49 of the roller frame support arm 42, and can be fastened by the U-bolt 18, so that the tilting frame 41 and the roller frame support arm 42 cannot rotate relative to each other. The upper surfaces of the respective rollers 48 near the connection of the roller frame support arm 42 and the upper surface of the long roller 44 near the connection of the tilting frame 41 can always be in the same plane to form a smooth butt joint. When the tilting roller path 4 is tilted to unload the tire, the tire can slide smoothly along the upper surfaces of the roller frame support arm 42 and the tilting frame 41, avoiding hindering the tire, and can fix the position of the roller frame support arm 42 on its respective pin, so that the distance between the two roller frame support arms 42 is completely locked. When it is necessary to adjust the distance between the roller frame support arms 42, the U-bolt 18 can be loosened, and the roller frame support arm 42 can axially move in the pin on which it is mounted to adjust the distance between the two roller frame support arms 42 to adapt to tires of different specifications. In addition, after the U-bolt 18 is loosened, the roller frame support arm 42 can also rotate around the pin to change the included angle relationship between the upper surface of the roller frame support arm 42 and the tilting frame 41 to be applicable to more usage situations, such as when the tire unloading mechanism is retracted and stopped due to limited working position, or when the tilting roller path 4 is hindered and interfered by other devices or equipment when moving within the track groove 21. The fixation between the fixed tube 43 and the semi-circular groove 49 is not limited to being fastened by the U-bolt 18, and other detachable fixation methods can also be adopted.

[0042] As a further improvement, as Figure 4 shown, a proximity switch 11 is provided on the frame 1, and the connecting arm 6 further includes a blocking portion 61 that cooperates with the proximity switch 11. When the piston rod 51 moves telescopically to drive the connecting arm 6 to swing, the blocking portion 61 moves accordingly and can pass through the position where the proximity switch 11 is located and sense with the proximity switch 11. The working state of the power cylinder 5 is controlled by a controller electrically connected to the proximity switch 11, so that the roller 22 connected to the tilting roller path 4 can accurately stop at the corresponding position in the track groove 21, so that the tilting roller path 4 maintains its tilting state to perform the corresponding tire unloading work. The controller can adopt a PLC (Programmable Logic Controller). The proximity switch 11 can be as Figure 7As shown in the figure, they are respectively inserted through the small holes oppositely arranged on both sides of the frame 1, and respectively correspond to different flipping states of the flipping roller path 4, ensuring that the proximity switches 11 on both sides can be sensed by the blocking part 61 and provide corresponding control instructions to the controller to control the working state of the power cylinder 5. Its action is reliable, the performance is stable, and the frequency response is fast. In addition, the connecting arm 6 and its blocking part 61 can form an integrally formed L-shaped structure, and two identical L-shaped structure connecting arms 6 can be symmetrically arranged on both sides of the sector gear 7. After being fixed and sealed by a cylindrical pin, they form a whole without relative movement. The ends of the connecting arms 6 are coaxially hinged to the ends of the piston rods 51 of the power cylinder 5 respectively, so as to be sensed by the proximity switches 11 on both sides of the frame 1. Moreover, using two connecting arms 6 to connect between the sector gear 7 and the piston rod 51 can also provide a more stable connection effect.

[0043] In the tire vulcanizer tire unloading mechanism of the present utility model, when the piston rod 51 on the power cylinder 5 contracts inward or extends outward, the piston rod 51 drives the connecting arm 6 hinged to its end to swing relative to the piston rod 51, and the cylinder block of the power cylinder 5 also rotates by a certain angle adaptively, so that the sector gear 7 fixedly connected to the other end of the connecting arm 6 can rotate around its rotation center axis. And because the length of the connecting arm 6 is greater than the radius of the sector gear 7, according to the lever principle, the process of the power cylinder 5 driving the connecting arm 6 to move and then making the sector gear 7 rotate will be more labor-saving; the sector gear 7 rotates as the driving wheel, and the gear part 81 on the gear shaft 8 meshing with the sector gear 7 is the driven wheel. Driven by the sector gear 7, the gear shaft 8 can rotate in the opposite direction. And because the radius of the sector gear 7 is greater than the radius of the gear part 81 on the gear shaft 8, the gear shaft 8 can rotate within a larger angle range relative to the sector gear 7; the rotation of the gear shaft 8 can drive the connecting rods 3 on both sides to rotate in the same direction, so that the flipping roller path 4 connected to the connecting rods 3 also moves accordingly. And because the roller shafts 22 fixedly connected to each side of the flipping roller path 4 slide in the track grooves 21 on the same side, thus driven by the connecting rods 3, the flipping roller path 4 can only perform flipping movement along the arc-shaped track grooves 21. Therefore, by controlling the telescopic degree of the piston rod 51 on the power cylinder 5, the position of the flipping roller path 4 in the track groove 21 can be changed to change the flipping state of the flipping roller path 4. And because the gear shaft 8 can rotate within a larger angle range relative to the sector gear 7, by setting appropriate dimensions, it can ensure that a smaller telescopic movement range of the piston rod 51 in the power cylinder 5 is adapted to a larger angle movement range of the roller shaft 22 in the track groove 21, ensuring that the flipping roller path 4 can be flipped and moved to the flipping state required for tire unloading. In a specific embodiment, the ratio of the complete pitch circle diameter corresponding to the sector gear 7 to the pitch circle diameter of the gear part 81 on the gear shaft 8 is 3:1. When the sector gear 7 drives the gear shaft 8 to rotate, the angle range that the gear shaft 8 can rotate is 3 times the angle range that the sector gear 7 rotates, so as to meet the requirements.

[0044] When in use, taking the case where the end of the piston rod 51 of the power cylinder 5 is facing downward as an example, the turning rollers 4 on both sides of the tire unloading mechanism are located between the front vulcanizer center mechanism 10 and the rear connecting rollers 12, and the proximity switches 11 on both sides of the frame 1 are respectively set at appropriate positions, so that when the blocking part 61 passes the position of the proximity switch 11, it can correspond to the horizontal tire supporting state and the inclined tire unloading state of the turning roller 4. Figure 6 and Figure 7 As shown, when the tire 9 is vulcanized in the vulcanization chamber, the piston rod 51 of the power cylinder 5 is fully extended, so that the flip roller 4 is located at the end of the arc-shaped track groove 21 away from the center mechanism 10. At this time, the plane corresponding to the flip roller 4 is tilted forward and away from the connecting roller 12, serving as the initial position, waiting for the mold to be opened and the tire to be unloaded.

[0045] like Figure 8 and Figure 9 As shown, when the tire 9 is vulcanized, the central mechanism 10 releases the vulcanized tire 9 from the lower mold and lifts it up. By controlling the power cylinder 5, the piston rod 51 of the power cylinder 5 is gradually retracted inward, and the piston rod 51 drives the sector gear 7 to rotate, and the corresponding gear shaft 8 and the connecting rod 3 rotate in the opposite direction. Driven by the connecting rod 3, the turning roller 4 turns from the initial position along the track groove 21 with the roller 22 to the direction close to the central mechanism 10, so that its plane is gradually in a horizontal state, and its roller support arm 42 reaches the bottom of the tire 9 to be unloaded on the central mechanism 10. , as the horizontal tire supporting position, at this time, the blocking part 61 will come to the position of the proximity switch 11 corresponding to the horizontal tire supporting state of the turning roller 4, and the blocking part 61 will sense the proximity switch 11, so that the power cylinder 5 stops taking in water, the piston rod 51 stops shrinking and moving, and the turning roller 4 remains in the horizontal tire supporting position; then the central mechanism 10 begins to descend, and the roller support arm 42 of the turning roller 4 can support the tire 9 from the bottom of the central mechanism 10, so that the tire 9 is separated from the central mechanism 10 and stays on the plane of the upper surface of the roller 48 of the roller support arm 42.

[0046] like Figure 10 and Figure 11As shown, after the tire 9 is completely separated from the central mechanism 10, continue to control the power cylinder 5 to gradually contract its piston rod 51 inward. Driven by the above structure, the turning roller path 4 continues to turn and move along the track groove 21 toward the direction close to the central mechanism 10 with the roller shaft 22 from the horizontal tire supporting position, and finally reaches the other end position of the track groove 21, making the plane of the turning roller path 4 tilt backward, and its turning frame 41 diagonally aligned with the connecting roller path 12 at the rear as the inclined tire unloading position. At this time, the blocking part 61 will come to the position of the proximity switch 11 corresponding to the inclined tire unloading state of the turning roller path 4. The blocking part 61 senses with the proximity switch 11, causing the power cylinder 5 to stop water intake and the piston rod 51 to stop contracting and moving. The turning roller path 4 remains at the inclined tire unloading position. The tire 9 slides backward along the roller 48 on the roller frame arm 42 and the long roller 44 on the turning frame 41 under the action of gravity to the connecting roller path 12, thus completing the tire unloading. The connecting roller path 12 moves the tire 9 to the subsequent process for processing; after one tire unloading is completed, control the power cylinder 5 to reverse the power water intake, causing the piston rod 51 to fully extend, driving the turning roller path 4 to reverse and move along the track groove 21 away from the central mechanism 10 with the roller shaft 22 until it returns to the initial position along the original path, waiting for the next tire unloading operation.

[0047] In summary, the tire unloading mechanism provided by the present utility model uses a power cylinder 5 as the power source, which drives the connecting arm 6, the sector gear 7, the gear shaft 8, and the connecting rod 3 to rotate in sequence, and then drives the movement of the turning roller path 4; by setting the length of the connecting arm 6 to be greater than the radius of the sector gear 7, it is more labor-saving when the power cylinder 5 drives the sector gear 7 to rotate via the connecting arm 6; since the radius of the sector gear 7 is greater than the radius of the gear part 81 on the gear shaft 8, the gear shaft 8 can rotate within a larger angle range relative to the sector gear 7, enabling the turning angle range of the turning roller path 4 to meet the requirements of tire unloading; and through the cooperation between the circular arc-shaped track groove 21 on the guide rail plate 2 and the roller shaft 22 slidably placed therein, the turning roller path 4 can move and turn smoothly along the track groove 21, entering different turning states, achieving the purpose of smooth tire unloading, so as to realize the corresponding tire unloading work of the tire unloading mechanism. By using a power cylinder 5 to control the operation of the tire unloading mechanism, its structure is simpler, eliminating many unnecessary equipment devices, thus making the operation of the operator more convenient and reducing the manufacturing, operation, and maintenance costs of the overall equipment; and adopting the above structure, each turning state of the turning roller path 4 can be coherently switched by controlling the power cylinder 5, and its movement and turning process are smooth and labor-saving, which can shorten the time required for each tire unloading operation, improve the work efficiency of tire unloading, and thus accelerate the processing process of the vulcanizer for the tire.

[0048] As described above, it is only a partial embodiment of the present utility model, and does not limit the protection scope of the present utility model hereby. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present utility model, and they should all be covered within the scope of the claims and the specification of the present utility model. Therefore, when those skilled in the art make non-substantial changes or replacements based on the present utility model, they still fall within the protection scope of the present utility model.

Claims

1. A tire vulcanizer tire unloading mechanism, comprising a frame (1), and turning roller tracks (4) located on both sides of the frame (1) for supporting a tire (9), characterized in that, Guide plates (2) and connecting rods (3) are symmetrically arranged on the left and right sides of the frame (1). One end of the left and right connecting rods (3) is coaxially hinged to the side of the left and right guide plates (2) away from the frame (1) through a gear shaft (8), and the other end of the left and right connecting rods (3) is connected to the turning roller track (4) on the same side; The gear shaft (8) is located between the left and right guide plates (2). A power cylinder (5) and a sector gear (7) meshing with the gear part (81) on the gear shaft (8) are rotatably installed between the left and right guide plates (2). One end of a connecting arm (6) is hinged to the end of the piston rod (51) of the power cylinder (5), and the other end of the connecting arm (6) is fixedly connected to the sector gear (7), so that when the piston rod (51) expands and contracts, it can drive the sector gear (7) to rotate; the length of the connecting arm (6) is greater than the radius of the sector gear (7), and the radius of the sector gear (7) is greater than the radius of the gear part (81) on the gear shaft (8); Arc-shaped track grooves (21) with openings facing upward are arranged on the sides of the left and right guide plates (2) away from the frame (1). One end of the turning roller track (4) on each side is fixedly connected to a roller shaft (22), and the other end of the roller shaft (22) slides in the track groove (21) on the same side, so that the turning roller track (4) can only be turned and moved along the track groove (21) under the drive of the connecting rod (3).

2. The tire demolding mechanism according to claim 1, characterized in that, Each side of the turning roller track (4) includes a turning frame (41) and two roller support arms (42) installed on the turning frame (41); The turning frame (41) includes a fixed pipe (43). One end of the fixed pipe (43) is fixedly connected to the roller shaft (22). A first support plate (411), a second support plate (412), a third support plate (413), and a fourth support plate (414) are fixedly installed on the fixed pipe (43) in sequence from the side close to the frame (1) to the side far from the frame (1). A plurality of long roller cylinders (44) are rotatably installed between the first support plate (411) and the fourth support plate (414) above the fixed pipe (43). A first pin (45a) is installed between the first support plate (411) and the second support plate (412), and a second pin (45b) is installed between the third support plate (413) and the fourth support plate (414). The first pin (45a) is fixedly connected to the connecting rod (3) on the same side; The roller support arm (42) includes a support (46) and side plates (47) located on both sides of the support. One end of the two side plates (47) is fixedly connected to the support (46). A plurality of roller shafts (48a) are rotatably installed between the two side plates (47). Rollers (48) are connected to both ends of the roller shafts (48a). The two roller support arms (42) are respectively installed on the first pin (45a) and the second pin (45b).

3. The tire demounting mechanism according to claim 2, characterized in that, The two roller support arms (42) are each provided with a mounting hole (461) penetrating the support seat (46) and adapted to be mounted on the first shaft pin (45a) and the second shaft pin (45b) respectively, so that the two roller support arms (42) are respectively slidably mounted on the first shaft pin (45a) and the second shaft pin (45b).

4. The tire demounting mechanism of a tire vulcanizer according to claim 3, characterized in that, A semicircular groove (49) adapted to the fixed tube (43) is provided on the support seat (46) of the rolling frame support arm (42). When the semicircular groove (49) is adapted to abut against and fixed to the fixed tube (43), the upper surfaces of the turning frame (41) and the rolling frame support arm (42) near the connection point are on the same plane.

5. A tire vulcanizer tire unloading mechanism according to any one of claims 1 to 4, characterized in that, The frame (1) is provided with a proximity switch (11), and the connecting arm (6) also includes a blocking portion (61) that cooperates with the proximity switch (11). When the piston rod (51) moves telescopically to drive the connecting arm (6) to swing, the blocking portion (61) moves accordingly and can pass through the position where the proximity switch (11) is located and sense the proximity switch (11). The working state of the power cylinder (5) is controlled by a controller electrically connected to the proximity switch (11).

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