An automatic tire-changing tool device consisting of an upper and lower sliding sleeve assembly.

Abstract

This invention discloses an automatic tire change tool device composed of upper and lower sliding sleeves, relating to the field of automotive repair equipment technology. It includes a housing and a secondary robotic arm, main shaft, and control panel mounted on its exterior. Upper and lower sliding sleeve assemblies are mounted inside the housing via guide rails and cylinders. The upper sliding sleeve assembly consists of a welded upper sliding sleeve assembly, a rotating tool arm, a drive motor, and a locking mechanism. The rotating tool arm has oil-free bearings at both ends and is connected to the drive motor via a small pulley, a belt, and a large pulley to achieve rotation. The tool arm locking disc cooperates with the rotating locking tongue to precisely position and lock the rotating tool arm. This device achieves automatic rotation and repositioning of the tool head through motor-driven belt transmission, and completes precise locking with the locking mechanism, replacing the traditional manual disassembly and replacement of the tool head, significantly improving the efficiency and safety of tire change operations.

Description

Technical Field

[0001] This invention relates to the field of automotive repair equipment technology, specifically an automatic tire-changing tool device composed of an upper and lower sliding sleeve assembly. Background Technology

[0002] Currently, tire changers are commonly used in the automotive repair and maintenance industry for removing and installing tires. Traditional tire changers are typically equipped with single or fixed tool heads. When removing or installing tires of different sizes or types, operators often need to manually change the corresponding tool head. This manual tool head changing method is not only cumbersome and labor-intensive, leading to low work efficiency, but also poses certain safety hazards because operators frequently come into contact with the working parts of the tire changer and the tire during the process. In addition, although some existing tire changers have tool head adjustment functions, their adjustment mechanisms are often complex in structure and have poor reliability, making it difficult to achieve quick and accurate positioning and switching of tool heads, thus failing to meet the demands of the modern automotive repair industry for efficient and automated operations. Summary of the Invention

[0003] To address the aforementioned problems, specifically those raised in the background section, this invention proposes an automatic tire-changing tool device comprised of an upper and lower sliding sleeve assembly. The device includes a housing; an auxiliary robotic arm, a main shaft, and a control panel are mounted on the outer side of the housing; an upper sliding sleeve assembly and a lower sliding sleeve assembly are mounted on the inner side of the housing via guide rails and cylinders. The upper sliding sleeve assembly includes a welded upper sliding sleeve assembly with oil-free bearings at both ends; a rotating tool arm rotatably disposed within the welded upper sliding sleeve assembly, configured to mount a tire-changing tool head; a drive motor connected to the rotating tool arm via a small pulley, a belt, and a large pulley, configured to drive the rotating tool arm to rotate; a tool arm locking disc and a rotating locking tongue; the tool arm locking disc is linked to the rotating tool arm, and the rotating locking tongue is configured to cooperate with the tool arm locking disc to lock the rotational position of the rotating tool arm.

[0004] The rotating tool arm is driven by a drive motor via a small pulley, a belt, and a large pulley. The rotating tool arm is precisely positioned by the tool arm locking disc and the rotating locking tongue, which realizes automatic switching and locking of the tool head. There is no need for manual disassembly and replacement, which significantly improves work efficiency and safety.

[0005] Preferably, the tool arm lock disc is provided with a positioning groove, the rotary latch is configured to be inserted into the positioning groove in the locked state and disengaged from the positioning groove in the unlocked state; it also includes a tension spring and a cylinder, the tension spring is connected to the rotary latch and is configured to provide an elastic force to the rotary latch toward the tool arm lock disc; the cylinder is configured to push the rotary latch to overcome the elastic force of the tension spring to disengage from the positioning groove.

[0006] A tension spring is used to keep the rotary locking tongue in a locked state, and an air cylinder is used to achieve automatic unlocking, ensuring the stability of the locking and the flexibility of switching.

[0007] Preferably, it further includes a reset torsion spring connected to the rotary tool arm and configured to provide a reset force after the rotary tool arm rotates; the front end of the rotary tool arm is equipped with a tire removal head casting, a tire removal hook casting, and an upper flip hook handle, which are fixed by an internal hex bolt and a second internal hex bolt.

[0008] The automatic reset function of the rotary tool arm is achieved by the reset torsion spring, which facilitates the next round of operation; the setting of the tire removal head casting, the tire removal hook casting, and the upward flipping hook handle enables the rotary tool arm to carry different types of tire removal tools.

[0009] Preferably, it also includes an upper tool arm shaft and a flip hook handle cover. The upper tool arm shaft is welded with a baffle and is inserted from the rear side of the rotating tool arm. The upper flip hook handle is installed at the front end of the upper tool arm shaft and fixed by the flip hook handle cover.

[0010] The reliable installation and fixation of the upper flip hook handle is achieved through the cooperation of the upper tool arm shaft core and the flip hook handle cover.

[0011] The sliding sleeve assembly includes a sliding sleeve welded together, with first oil-free bearings at both ends; a lower tool arm shaft, rotatably disposed within the sliding sleeve welded together, configured to mount a lower flip hook handle; a push cylinder and a push block, the push block being connected to the push cylinder and configured to push the lower tool arm shaft to rotate under the drive of the push cylinder; and a second reset torsion spring, connected to the lower tool arm shaft and configured to drive the lower tool arm shaft to reset after the push cylinder removes its thrust.

[0012] By pushing the cylinder and the push block to rotate the lower tool arm shaft, the tool head posture is automatically adjusted. With the help of the second reset torsion spring, the tool head returns to its original position automatically, further improving the automation level of the device.

[0013] Preferably, the lower tool arm shaft is provided with a baffle, and the second reset torsion spring is configured to drive the lower tool arm shaft to reset through elastic restoring force after the pushing block removes the thrust; the front end of the lower tool arm shaft is equipped with a tire head casting and a lower flip hook handle, which are fixed by a third hexagonal socket bolt, and the lower flip hook handle is fixed by a second flip hook handle cover.

[0014] The precise reset of the lower tool arm shaft is achieved by using the baffle and the second reset torsion spring; the second flip hook handle cover ensures the reliable fixation of the lower flip hook handle.

[0015] The beneficial technical effects of this invention are as follows: A drive motor drives the rotating tool arm to rotate via a small pulley, a belt, and a large pulley. The tool arm locking disc and rotating locking tongue cooperate to achieve precise positioning. A tension spring maintains the locked state, and a cylinder automatically unlocks the tool. This solves the problems of low efficiency and poor safety caused by the need for manual replacement of tool heads in existing tire changers, achieving automatic rotation, repositioning, and locking of the tool head. Simultaneously, by pushing the cylinder and push block to rotate the tool arm shaft, the second reset torsion spring returns to its original position after the force is released, achieving automatic adjustment and reset of the tool head's posture. This invention has a reasonable structural design, a high degree of automation, effectively reduces the labor intensity of operators, and improves the efficiency and safety of tire changer operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall layout of the present invention; Figure 2 This is a schematic diagram of the upper sliding sleeve assembly structure described in this invention; Figure 3 This is a schematic diagram of the sliding sleeve assembly structure described in this invention; Figure 4 This is a schematic diagram of the upper sliding sleeve assembly described in this invention; Figure 5 This is a schematic diagram of the overall sliding sleeve assembly described in this invention.

[0017] Reference numerals: 1. Flip hook handle cover; 2. Upper flip hook handle; 3. Socket head bolt; 4. Tire removal hook casting; 5. Second Socket head bolt; 6. Tire removal head casting; 7. Oil-free bearing; 8. Upper sliding sleeve assembly; 9. Rotary locking tongue; 10. Tension spring; 11. Cylinder; 12. Rotating tool arm; 13. Upper tool arm shaft; 14. Tool arm locking disc; 15. Small pulley; 16. Large pulley; 17. Belt; 18. Housing; 19. Drive motor; 20. Return torsion spring; 21. Second flip hook handle cover; 22. Lower flip hook handle; 23. Third Socket head bolt; 24. Tire removal head casting; 25. First oil-free bearing; 26. Lower sliding sleeve assembly; 27. Push cylinder; 28. Push block; 29. ​​Lower tool arm shaft; 30. Second return torsion spring; 31. Secondary manipulator; 32. Main spindle; 33. Control panel. Detailed Implementation

[0018] The following is a reference to the appendix. Figures 1-5 The preferred embodiments of this invention are described below. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this invention and are not intended to limit the scope of protection of this invention.

[0019] This invention patent proposes an automatic tire-changing tool device composed of an upper and lower sliding sleeve assembly, including a housing 18. A secondary robotic arm 31, a main shaft 32, and a control panel 33 are mounted on the outside of the housing 18. An upper sliding sleeve assembly and a lower sliding sleeve assembly are mounted on the inside of the housing 18 via guide rails and cylinders. An upper sliding sleeve assembly 8 is welded together, with oil-free bearings 7 at both ends. A rotating tool arm 12 is rotatably disposed within the upper sliding sleeve assembly 8 and configured to mount the tire-changing tool head. A drive motor 19 is connected to the rotating tool arm 12 via a small pulley 15, a belt 17, and a large pulley 16, and is configured to drive the rotating tool arm 12 to rotate. A tool arm locking disc 14 and a rotating locking tongue 9 are also included. The tool arm locking disc 14 is linked to the rotating tool arm 12, and the rotating locking tongue 9 is configured to cooperate with the tool arm locking disc 14 to lock the rotational position of the rotating tool arm 12.

[0020] Specifically, the rotary tool arm 12 is installed inside the upper sliding sleeve assembly 8. Oil-free bearings 7 are installed at both ends of the upper sliding sleeve assembly 8 as rotational supports. The rotary tool arm 12 is rotatably mounted within the cavity of the upper sliding sleeve assembly 8 via the oil-free bearings 7. The front end of the rotary tool arm 12 is used to install the tire-removing tool head, while the rear end is connected to the power transmission component. The drive motor 19 is installed on the upper rear half of the upper sliding sleeve assembly 8, and a small pulley 15 is directly mounted on its output shaft. A large pulley 16 is coaxially fixedly installed at the rear end of the rotary tool arm 12, and a belt 17 is tensioned and wound between the small pulley 15 and the large pulley 16. When the drive motor 19 starts, the output shaft drives the small pulley 15 to rotate, which in turn drives the large pulley 16 to rotate through the frictional transmission of the belt 17, thereby driving the rotary tool arm 12, which is fixedly connected to the large pulley 16, to rotate, thus achieving automatic tool head switching. The belt 17 has a buffering and vibration-absorbing function, which can effectively absorb the impact load generated when the drive motor 19 starts and stops, making the rotation of the rotary tool arm 12 more stable.

[0021] The tool arm locking disc 14 is fixedly installed at the rear end of the rotating tool arm 12 and rotates synchronously with the rotating tool arm 12, establishing a synchronous rotation linkage between the two. The rotary locking tongue 9 is located at a fixed position in the middle of the front half of the upper sliding sleeve assembly 8, serving as a positioning actuator. When the rotating tool arm 12 rotates to a preset work position angle under the drive of the drive motor 19, the rotary locking tongue 9 actuates and engages at a specific position on the tool arm locking disc 14, thereby restricting the tool arm locking disc 14 from continuing to rotate and locking the rotational position of the rotating tool arm 12. This structure utilizes mechanical locking to achieve precise positioning and reliable fixation of the tool head position, maintaining the locked state of the tool head even in the event of power failure or failure of the drive motor 19.

[0022] The tool arm locking disc 14 is provided with a positioning groove, and the rotary locking tongue 9 is configured to be inserted into the positioning groove in the locked state and disengaged from the positioning groove in the unlocked state; it also includes a tension spring 10 and a cylinder 11, the tension spring 10 is connected to the rotary locking tongue 9 and is configured to provide an elastic force to the rotary locking tongue 9 in the direction of the tool arm locking disc 14; the cylinder 11 is configured to push the rotary locking tongue 9 to overcome the elastic force of the tension spring 10 to disengage from the positioning groove.

[0023] The tool arm locking disc 14 is fixedly mounted on the rear end of the rotating tool arm 12. A positioning groove is formed on the edge region of the tool arm locking disc 14, symmetrically distributed at 180-degree intervals, corresponding to the switching between two workstations. A rotating locking tongue 9 is movably mounted on the upper sliding sleeve assembly 8. Its head shape is adapted to the positioning groove, allowing it to embed within the groove to restrict the rotational freedom of the tool arm locking disc 14. One end of a tension spring 10 is connected to the tail of the rotating locking tongue 9, and the other end is fixed to the base of the upper sliding sleeve assembly 8, consistently applying a pulling force towards the tool arm locking disc 14 to the rotating locking tongue 9. In its natural state, the tension spring 10 pulls the rotating locking tongue 9 so that its head firmly abuts against the outer circumference of the tool arm locking disc 14. When the rotating tool arm 12 rotates to a preset workstation, the rotating locking tongue 9 automatically slides into the positioning groove under the tension of the tension spring 10, achieving automatic locking. The cylinder body of cylinder 11 is fixedly mounted on the upper sliding sleeve assembly 8, and the end of its piston rod is connected to the rotary locking tongue 9. When it is necessary to switch work positions, cylinder 11 is activated, the piston rod extends, and pushes the rotary locking tongue 9 to overcome the tension of the tension spring 10 and move away from the tool arm locking disc 14, so that the rotary locking tongue 9 is disengaged from the positioning groove. At this time, the tool arm locking disc 14 and the rotary tool arm 12 are released and can rotate under the drive of the drive motor 19.

[0024] This structure has excellent self-locking and power-off retention. Because the rotary locking tongue 9 always tends to embed into the positioning groove under the action of the tension spring 10, even if the equipment is powered off or the cylinder 11 fails due to a power outage, the rotary locking tongue 9 can still remain locked, preventing the rotary tool arm 12 from deflecting due to accidental force during operation.

[0025] It also includes a reset torsion spring 20, which is connected to the rotary tool arm 12 and configured to provide a reset force after the rotary tool arm 12 rotates; the front end of the rotary tool arm 12 is equipped with a tire removal head casting 6, a tire removal hook casting 4 and an upper flip hook handle 2, which are fixed by hexagonal socket bolts.

[0026] A reset torsion spring 20 is sleeved on the rear shaft section of the rotary tool arm 12, located between the large pulley 16 and the side wall of the upper sliding sleeve welded assembly 8. One end of the reset torsion spring 20 is fixed to the base of the upper sliding sleeve welded assembly 8, and the other end is connected to the rotary tool arm 12 or the large pulley 16. When the drive motor 19 drives the rotary tool arm 12 to perform a rotation switching action, the rotary tool arm 12 rotates against the elastic force of the reset torsion spring 20, and the reset torsion spring 20 undergoes elastic deformation to store elastic potential energy. When the rotary locking tongue 9 disengages from the positioning groove of the tool arm locking disc 14 to unlock, or when the rotary tool arm 12 needs to rotate in the opposite direction, the reset torsion spring 20 releases the stored elastic potential energy, providing a reset torque for the rotary tool arm 12 to return to its initial position. The presence of the reset torsion spring 20 also provides a certain amount of damping and preload during the rotation of the rotary tool arm 12, which helps to eliminate the gap between the belt 17 drive and makes the rotary tool arm 12 more stable when locked and positioned.

[0027] The front end of the rotary tool arm 12 is equipped with a tire-removing head casting 6, a tire-removing hook casting 4, and an upper flip hook handle 2, which are fixed by hexagon socket bolts 3 and 5. The tire-removing head casting 6 has a fixing nail groove for linkage rotation with the upper flip hook handle 2. When the tool head is in position 1, the upper flip hook handle 2 remains stationary upwards; when switching to tool head 2, the upper flip hook handle 2 screws into the fixing nail groove of the tire-removing head casting 6, and the positions of the two tool heads coincide.

[0028] The mounting and fixing structure of the upper flip hook handle 2 includes an upper tool arm shaft core 13 and a flip hook handle cover 1. The upper tool arm shaft core 13 is welded with a baffle and is inserted from the rear side of the rotating tool arm 12. The upper flip hook handle 2 is installed at the front end of the upper tool arm shaft core 13 and fixed by the flip hook handle cover 1.

[0029] A baffle is welded to the upper tool arm shaft core 13 and is inserted from the rear of the rotating tool arm 12. The baffle welded to the upper tool arm shaft core 13 is linked to the return torsion spring 20 but is not subjected to torque. When the No. 1 tool head is in its original position, the baffle is not subjected to torque from the return torsion spring 20, and the upper flip hook handle 2 remains stationary upwards. When the rotating tool arm 12 rotates to the No. 2 tool head position, the upper flip hook handle 2 coincides with the position of the tire removal head casting 6. If it is rotated again to switch to the No. 3 tool head, the baffle welded to the upper tool arm shaft core 13 pushes the return torsion spring 20 to bear torque, realizing the posture change of the upper flip hook handle 2. The upper flip hook handle 2 is installed at the front end of the upper tool arm shaft core 13 and is fixed by the flip hook handle pressure cap 1 to ensure a reliable connection between the upper flip hook handle 2 and the upper tool arm shaft core 13.

[0030] A sliding sleeve assembly 26 is provided, with first oil-free bearings 25 at both ends; a lower tool arm shaft 29 is rotatably disposed within the sliding sleeve assembly 26 and configured to install a lower flip hook 22; a push cylinder 27 and a push block 28 are provided, the push block 28 being connected to the push cylinder 27 and configured to push the lower tool arm shaft 29 to rotate under the drive of the push cylinder 27; a second reset torsion spring 30 is connected to the lower tool arm shaft 29 and configured to drive the lower tool arm shaft 29 to reset after the push cylinder 27 removes its thrust.

[0031] The lower tool arm shaft core 29 is installed inside the lower sliding sleeve assembly 26. The lower sliding sleeve assembly 26 has first oil-free bearings 25 at both ends as rotational supports. The lower tool arm shaft core 29 is rotatably mounted within the cavity of the lower sliding sleeve assembly 26 via the first oil-free bearings 25. The front end of the lower tool arm shaft core 29 is used to install the lower flip hook shank 22, which undertakes the flipping movement of the tool head's partial components. During tire removal operations, for tires of different profiles or different stages of tire removal, the hook body of the tool head needs to be angled to better fit the rim or avoid obstacles. The rotation of the lower tool arm shaft core 29 can cause the lower flip hook shank 22 to change its orientation.

[0032] The push cylinder 27 is installed at the upper end of the lower sliding sleeve assembly 26 as a linear power source, and its cylinder body is fixedly installed on the lower sliding sleeve assembly 26. The push block 28 is connected to the piston rod end of the push cylinder 27. When the push cylinder 27 is activated, the piston rod extends downward, driving the push block 28 to move axially. During the movement, the push block 28 contacts the structure on the lower tool arm shaft core 29, converting the linear thrust into the rotational torque of the lower tool arm shaft core 29, causing the lower flip hook shank 22 to complete the flipping action.

[0033] The second reset torsion spring 30 is installed at the rear end of the lower tool arm shaft 29 and connected to the lower tool arm shaft 29. When the pushing cylinder 27 removes the thrust, the second reset torsion spring 30 uses its stored elastic potential energy to automatically push the lower tool arm shaft 29 back to its initial position, thereby achieving automatic return of the tool head posture.

[0034] The lower tool arm shaft core 29 is provided with a baffle. The second reset torsion spring 30 is configured to drive the lower tool arm shaft core 29 to reset through elastic restoring force after the pushing block 28 removes the pushing force. The front end of the lower tool arm shaft core 29 is equipped with a tire head casting 24 and a lower flip hook handle 22, which are fixed by hexagonal socket bolts 23. The lower flip hook handle 22 is fixed by the second flip hook handle cover 21.

[0035] A baffle is welded onto the lower tool arm shaft core 29, and the baffle rotates synchronously with the lower tool arm shaft core 29. A second reset torsion spring 30 is sleeved on the lower tool arm shaft core 29, with one end fixed to the base of the lower sliding sleeve assembly 26 and the other end abutting against the baffle. In the initial state, the second reset torsion spring 30 is in a pre-tensioned or relaxed state, and the baffle is in its initial position. At this time, the lower flip hook handle 22 is perpendicular to the tire removal head casting 24, which is the original working position of the lower sliding sleeve.

[0036] The front end of the sliding sleeve assembly 26 is fitted with a tire head casting 24, which is fixed by an internal hex bolt 23. The front end of the lower tool arm shaft core 29 is fitted with a lower flip hook shank 22, which is fixed by a second flip hook shank cap 21 to ensure a reliable connection between the lower flip hook shank 22 and the lower tool arm shaft core 29.

[0037] When posture adjustment is required, the push cylinder 27 moves downward, causing the push block 28 to move forward and push against the baffle on the lower tool arm shaft 29. At this time, the baffle is subjected to a pushing force, causing the lower tool arm shaft 29 to rotate against the elastic resistance of the second reset torsion spring 30. The lower flip hook shank 22 then completes a 90-degree flip to the working position, and the second reset torsion spring 30 stores elastic potential energy due to elastic deformation. After the work is completed, the push cylinder 27 removes its pushing force, causing the push block 28 to disengage from the baffle. At this time, the second reset torsion spring 30 releases its stored elastic potential energy, generating a reverse rotational torque, which drives the lower tool arm shaft 29 to rotate in the opposite direction through the baffle until it returns to its initial position, achieving automatic reset.

[0038] The upper sliding sleeve assembly 8 also includes a drive motor 19 for driving the rotation of the rotary tool arm 12, and a tool arm locking disc 14 and a rotary locking tongue 9 for locking the rotational position of the rotary tool arm 12; the lower sliding sleeve assembly 26 and a lower tool arm shaft core 29 rotatably disposed within the lower sliding sleeve assembly 26, the lower sliding sleeve assembly 26 also includes a push cylinder 27 and a push block 28 for pushing the lower tool arm shaft core 29 to rotate, and a second reset torsion spring 30 for driving the lower tool arm shaft core 29 to reset after the push cylinder 27 is depressurized.

[0039] The upper sliding sleeve assembly 8 has a cavity inside to accommodate the rotating tool arm 12, which is rotatably mounted inside the upper sliding sleeve assembly 8 via an oilless bearing 7. The drive motor 19 is connected to the rotating tool arm 12 via a small pulley 15, a belt 17, and a large pulley 16. The tool arm locking disc 14 and the rotating locking tongue 9 cooperate to lock the rotational position of the rotating tool arm 12. The upper sliding sleeve assembly 8, as a whole, mainly undertakes the automatic multi-position switching function of the tool head. Driven by the drive motor 19, the rotating tool arm 12 rotates, and with the precise positioning of the tool arm locking disc 14 and the rotating locking tongue 9, it can automatically switch the tire-removing head casting 6 or tire-removing hook casting 4 installed at its front end between different positions.

[0040] The lower sleeve assembly 26 has a cavity inside to accommodate the lower tool arm shaft 29, which is rotatably mounted inside the lower sleeve assembly 26 via a first oilless bearing 25. A push cylinder 27 and a push block 28 rotate the lower tool arm shaft 29, and a second return torsion spring 30 returns the lower tool arm shaft 29 to its original position after the push cylinder 27 is depressurized. The lower sleeve assembly 26, as a whole, primarily performs the function of automatically adjusting the local posture of the tool head. By rotating the lower tool arm shaft 29 through the push cylinder 27 and the push block 28, it can drive the lower flip hook shank 22 mounted at its front end to flip, changing the posture of local components of the tool head.

[0041] In terms of spatial relationship, the upper sliding sleeve weld 8 and the lower sliding sleeve weld 26 are arranged vertically. The upper sliding sleeve weld 8 is located above, and the lower sliding sleeve weld 26 is located below. This vertically integrated arrangement integrates the rotation switching function and the attitude adjustment function into the same main body of the device, which greatly reduces the size of the device and makes it easier to install in the housing of the tire changer. The two do not interfere with each other but work together, enabling the tire changer to complete complex compound actions.

[0042] The control panel 33 serves as the core of the entire machine's control system, integrating a controller internally and featuring an operation panel and display screen on its surface. The operation panel is equipped with control buttons for triggering tool head switching actions and provides real-time feedback on information such as the current tool head number and workstation status.

[0043] Although the present invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0044] In the description of this invention patent, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Furthermore, it should be noted that, in the description of this invention patent, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention patent according to the specific circumstances.

[0046] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0047] The technical solution of this invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this invention is obviously not limited to these specific embodiments. Without departing from the principles of this invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions resulting from these changes or substitutions will all fall within the scope of protection of this invention.

Claims

1. An automatic tool head conversion device for a tire changer, comprising a housing (18), wherein a secondary manipulator (31), a main shaft (32), and a control panel (33) are mounted on the outside of the housing (18), and an upper sliding sleeve assembly and a lower sliding sleeve assembly are mounted on the inside of the housing (18) via guide rails and cylinders, characterized in that: The upper sliding sleeve assembly includes an upper sliding sleeve welded together (8), with oil-free bearings (7) installed at both ends. A rotating tool arm (12) is rotatably disposed within the upper sliding sleeve assembly (8) and configured to install a tire-removing tool head; A drive motor (19) is connected to the rotary tool arm (12) via a small pulley (15), a belt (17) and a large pulley (16), and is configured to drive the rotary tool arm (12) to rotate. Tool arm locking disc (14) and rotary locking tongue (9), wherein the tool arm locking disc (14) is linked to the rotary tool arm (12), and the rotary locking tongue (9) is configured to cooperate with the tool arm locking disc (14) to lock the rotation position of the rotary tool arm (12); The sliding sleeve assembly includes a sliding sleeve weld (26) with first oil-free bearings (25) installed at both ends. The lower tool arm shaft (29) is rotatably disposed within the lower sliding sleeve assembly (26) and configured to mount the lower flip hook handle (22). A push cylinder (27) and a push block (28) are connected to the push cylinder (27) and configured to push the lower tool arm shaft (29) to rotate under the drive of the push cylinder (27); The second reset torsion spring (30) is connected to the lower tool arm shaft (29) and is configured to drive the lower tool arm shaft (29) to reset after the push cylinder (27) removes the thrust.

2. The apparatus according to claim 1, characterized in that, The tool arm lock disc (14) is provided with a positioning groove, and the rotary lock tongue (9) is configured to be inserted into the positioning groove in the locked state and to be disengaged from the positioning groove in the unlocked state; it also includes a tension spring (10) and a cylinder (11), the tension spring (10) is connected to the rotary lock tongue (9) and is configured to provide the rotary lock tongue (9) with an elastic force toward the tool arm lock disc (14); the cylinder (11) is configured to push the rotary lock tongue (9) to overcome the elastic force of the tension spring (10) to disengage from the positioning groove.

3. The apparatus according to claim 1, characterized in that, It also includes a reset torsion spring (20), which is connected to the rotary tool arm (12) and configured to provide a reset force after the rotary tool arm (12) is rotated; the front end of the rotary tool arm (12) is equipped with a tire removal head casting (6), a tire removal hook casting (4) and an upper flip hook handle (2), which are fixed by an internal hex bolt (3) and a second internal hex bolt (5).

4. The apparatus according to claim 3, characterized in that, It also includes an upper tool arm shaft core (13) and a flip hook handle cover (1). The upper tool arm shaft core (13) is welded with a baffle and is inserted through the rear side of the rotating tool arm (12). The upper flip hook handle (2) is installed at the front end of the upper tool arm shaft core (13) and fixed by the flip hook handle cover (1).

5. The apparatus according to claim 1, characterized in that, The lower tool arm shaft (29) is provided with a baffle. The second reset torsion spring (30) is configured to drive the lower tool arm shaft (29) to reset through elastic restoring force after the push block (28) removes the thrust. The front end of the lower tool arm shaft (29) is equipped with a tire head casting (24) and a lower flip hook handle (22), which are fixed by an inner third hexagonal bolt (23). The lower flip hook handle (22) is fixed by a second flip hook handle cover (21).

Images