A post inflation chuck quick attach / detach device and method

Abstract

The present application relates to the related technical field of tire vulcanization after inflation, and particularly relates to a quick loading and unloading device and method for a post-inflation chuck. An upper spindle 11 of an upper chuck assembly 1 is coupled with a rotating shaft of an upper chuck base 12, wherein an upper locking plate 15 for locking an upper chuck 14 is fixed at an end of the upper spindle 11; a lower spindle 21 of a lower chuck assembly 2 is coupled with a rotating shaft of a lower chuck base 22, wherein a lower locking plate 25 for locking a lower chuck 24 is fixed at an end of the lower spindle 21; a lower spindle rotating assembly 3 is rotationally coupled with the lower spindle 21, the upper spindle 11 and the lower spindle 21 are interlocked by abutting the upper chuck assembly 1 and the lower chuck assembly 2, and the upper locking plate 15 on the upper spindle 11 and the lower locking plate 25 on the lower spindle 21 are rotated together by the lower spindle rotating assembly 3 to achieve quick loading and unloading of the chuck. The present application solves the problems of high labor intensity and low efficiency when replacing the chuck of the existing post-inflation device.

Description

Technical Field

[0001] This invention relates to the technical field of tire inflation after vulcanization, and in particular to a quick loading and unloading device and method for a rear inflation chuck. Background Technology

[0002] After the semi-steel radial tires have completed vulcanization, they need to be promptly inflated and cooled to reduce the temperature of the finished tire, prevent tire deformation, and maintain the correct tire dimensions and physical properties. The rear inflation device is mainly used for inflating, cooling, and shaping the vulcanized tires. It directly affects the quality of the vulcanized tires produced by the vulcanizing machine and is an important component of the tire vulcanizing machine, widely used in tire production.

[0003] The rear inflator inflates semi-steel radial tires by using a chuck to seal the bead openings on both sides of the tire, creating a closed space. The chuck is a crucial component of the rear inflator and needs to be replaced according to the tire size. Currently, the chuck is fixed to the rear inflator using screws. Replacing the chuck requires manually loosening the screws with a wrench, replacing the chuck, and then tightening the screws to secure it. This process is labor-intensive and inefficient.

[0004] For the reasons mentioned above, it is necessary to optimize the fixing method of the rear inflation device chuck to solve the problem of high manual labor intensity and low efficiency when replacing the rear inflation device chuck. Summary of the Invention

[0005] The present invention aims to overcome the problems of existing chuck and rear inflation device connection and fixation using screws, which require manual loosening of screws with a wrench when replacing the chuck, and then tightening the screws again after replacing the chuck to fix the chuck, resulting in high manual labor intensity and low replacement efficiency.

[0006] This invention is implemented as follows:

[0007] In a first aspect, the present invention provides a quick loading and unloading device for a rear-inflatable chuck, comprising an upper chuck assembly 1, a lower chuck assembly 2, and a lower spindle rotation assembly 3;

[0008] The upper spindle 11 of the upper chuck assembly 1 is coupled to the upper chuck base 12, wherein the upper locking plate 15 for locking the upper chuck 14 is fixed to the end of the upper spindle 11.

[0009] The lower spindle 21 of the lower chuck assembly 2 is coupled to the lower chuck base 22, wherein the lower locking plate 25 for locking the lower chuck 24 is fixed to the end of the lower spindle 21.

[0010] The lower spindle rotating assembly 3 is coupled to the lower spindle 21 for rotational transmission. The upper spindle 11 and the lower spindle 21 are interlocked by the upper chuck assembly 1 and the lower chuck assembly 2. The lower spindle rotating assembly 3 drives the upper locking plate 15 on the upper spindle 11 and the lower locking plate 25 on the lower spindle 21 to rotate together, so as to realize the synchronous and rapid loading and unloading of the upper chuck 14 and the lower chuck 24.

[0011] Preferably, the upper locking plate 15 is composed of a mother ring 151 and a plurality of extension arms 152 arranged around the mother ring 151; the upper chuck 14 is provided with a central hollow 141 that avoids the mother ring 151 and an outer hollow 142 that avoids the extension arms.

[0012] Specifically, when the extension arm 152 rotates to the plate area between the two outer hollows 142, the upper locking plate 15 locks the upper chuck 14; when the extension arm 152 rotates into the outer hollow 142, the upper locking plate 15 unlocks the upper chuck 14.

[0013] Preferably, the upper chuck base 12 is provided with a first positioning pin 121 in the area between the inner diameter of the central hollow 141 and the outer diameter of the mother ring 151; the first positioning pin 121 is used to be embedded in the preset first positioning hole 153 on the back of the extension arm 152 when the extension arm 152 is rotated to the plate area between the two outer hollows.

[0014] Preferably, the upper chuck assembly 1 is fixedly connected to the guide rod 41 on the frame 4 and connected to the push rod 42 shaft / clamp on the frame 4.

[0015] Preferably, the retaining ring connection specifically includes:

[0016] A pair of slots 421 are provided near the end of the push rod 42, and two crescent rings 422 are respectively embedded in one side of the slot 421; the back of the upper chuck base 12 is constructed with one or more rings 122 of preset thickness to form a transverse annular groove 123 for vertically limiting the rotation of the push rod 42 and the crescent rings 422 that are embedded in it.

[0017] Preferably, the lower chuck assembly 2 is fixed to the crossbeam 43 of the frame 4, or,

[0018] The lower chuck assemblies 2 are fixed in pairs on the top and bottom of the crossbeam 43 of the frame 4, respectively, and the upper chuck assemblies 1 are arranged in pairs above and below the two lower chuck assemblies 2.

[0019] Preferably, a first graphic groove 111 and a first graphic protrusion 211 are respectively formed on the facing ends of the upper mandrel 11 and the lower mandrel 21. When the upper chuck assembly 1 and the lower chuck assembly 2 abut, the first graphic protrusion 211 is embedded in the first graphic groove 111 to complete interlocking; or,

[0020] On the opposite ends of the upper spindle 11 and the lower spindle 21, a second graphic protrusion 112 and a second graphic groove 212 are respectively made. When the upper chuck assembly 1 and the lower chuck assembly 2 abut, the second graphic protrusion 112 is embedded in the second graphic groove 212 to complete interlocking.

[0021] Preferably, the handle 31 of the lower spindle rotating assembly 3 is connected to the bottom end of the lower spindle 21, and the other end of the handle 31 is axially connected to the second push rod 32.

[0022] Preferably, a set of positioning pins and positioning holes are also provided between the upper chuck 14 and the lower chuck 24.

[0023] In a second aspect, the present invention provides a method for quick installation and removal of a rear-inflatable chuck. Using the quick installation and removal device for the rear-inflatable chuck described in the first aspect, the method includes the following steps when installing the upper chuck 14 and the lower chuck 24:

[0024] Align the lower chuck 24 with the lower chuck base 22 and place it on the lower chuck base 22, then stack the upper chuck 14 on the lower chuck 24;

[0025] The servo mechanism is activated, and the push rod 42 is used to push the upper chuck base 12 toward the lower chuck base 22. After the upper spindle 11 and the lower spindle 21 are interlocked, the lower spindle rotation assembly 3 is activated. The lower spindle rotation assembly 3 drives the upper locking plate 15 on the upper spindle 11 and the lower locking plate 25 on the lower spindle 21 to rotate together to lock the chuck.

[0026] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0027] This invention provides a quick-installation device for rear-inflating chucks. The upper and lower chucks are initially installed on the lower chuck base. Through the addition of a lower spindle rotation assembly, and with the interlocking linkage between the upper and lower spindles, alignment is achieved in one step, the push rod is pressed down in one step, and the lower spindle rotation assembly is driven to unlock in one step. This achieves a high degree of mechanical autonomy and solves the problems of high manual labor intensity and low efficiency when changing chucks in existing rear-inflating devices. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1This is a schematic diagram of the existing rear inflation device chuck connection and fastening structure provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0031] Figure 3 The upper chuck assembly structure in the quick loading and unloading device for a rear-inflated chuck provided in this embodiment of the invention is... Figure 5 A cross-sectional view from the perspective of line A-A';

[0032] Figure 4 This is a cross-sectional view of the lower chuck assembly structure in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0033] Figure 5 This is a bottom view of the upper chuck assembly structure in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0034] Figure 6 This is an exploded view of the upper chuck assembly structure in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention.

[0035] Figure 7 This is a structural illustration of the combination buckle in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0036] Figure 8 This is an axial view of the upper chuck assembly in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0037] Figure 9 This is a cross-sectional view of the lower chuck assembly and the lower spindle rotation assembly in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention.

[0038] Figure 10 This is a schematic diagram of the upper spindle and push rod combination structure in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0039] Figure 11 An exploded view of the coupling structure between the push rod and the upper central shaft in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0040] Figure 12 A cross-sectional view of the push rod and upper central axis coupling frame in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0041] Figure 13 An axial view of the installation structure of a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0042] Figure 14This is a schematic diagram of the coupling structure of the upper and lower mandrels in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0043] Figure 15 This is a schematic diagram of the coupling structure of another upper and lower mandrel in a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0044] Figure 16 This is an axial view of the lower chuck assembly and push rod combination structure in a rear-inflatable chuck quick-loading and unloading device provided in an embodiment of the present invention;

[0045] Figure 17 This is a schematic diagram of a rapid loading and unloading method for a rear-inflated chuck provided in an embodiment of the present invention;

[0046] Figure 18 This is a schematic diagram illustrating the process principle of a rapid loading and unloading device for a rear-inflated chuck, provided in an embodiment of the present invention.

[0047] Figure 19 This is a schematic diagram showing the positional relationship between the upper chuck assembly and the first and second positioning pins on the lower chuck assembly after the upper chuck assembly is pressed down and abuts against the lower chuck assembly, according to an embodiment of the present invention.

[0048] Figure 20 This is a cross-sectional view of the initial state of a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0049] Figure 21 This is a cross-sectional view of the initial state of a quick loading and unloading device for a rear-inflated chuck provided in an embodiment of the present invention;

[0050] Figure 22 This is a cross-sectional view of a rear-inflatable chuck quick-release device in the locked state, provided as an embodiment of the present invention. Detailed Implementation

[0051] In the description of this invention, the terms "inner", "outer", "longitudinal", "lateral", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and do not require that this invention must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0052] In this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0053] In this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, the term "coupled" can refer to an electrical connection that enables signal transmission.

[0054] The existing rear inflation device chuck connection is secure, such as Figure 1 As shown, the upper chuck 01 is fixed to the moving plate 03 by screw 06; the lower chuck 02 is fixed to the stationary plate 04 by screw 05. When the tire specifications change, the upper chuck 01 and lower chuck 02 need to be replaced. To replace the upper chuck 01 and lower chuck 02, screws 05 and 06 need to be loosened, and the upper chuck 01 and lower chuck 02 removed. After replacing the upper chuck 01 and lower chuck 02, screws 05 and 06 are tightened again. The existing rear inflation chucks are labor-intensive to disassemble and install, and the replacement efficiency is low.

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Example 1:

[0057] This invention provides a quick loading and unloading device for a rear-inflated chuck, such as... Figures 2-4 As shown, the assembly includes an upper chuck assembly 1, a lower chuck assembly 2, and a lower spindle rotation assembly 3. In this embodiment of the invention, the orientation shown in the figures is mostly described from the perspective of the upper chuck assembly 1 and the lower chuck assembly 2 mounted on the frame 4. Therefore, it is necessary to explain the terminology rules in advance. For the upper chuck assembly 1 and the lower chuck assembly 2, the ends of the upper spindle 11 and the lower spindle 21 refer to the opposite sides of the upper chuck assembly 1 and the lower chuck assembly 2, that is, the end of the upper spindle 11 is... Figure 3 Below the middle upper spindle 11, the bottom of the upper spindle 11 is Figure 3 Above the upper mandrel 11; the end of the lower mandrel 21 is Figure 4 Above the middle and lower mandrel 21, and at the bottom of the lower mandrel 21. Figure 4 The bottom of the lower spindle 21 can be understood from another perspective: the corresponding ends are all understood as the manual operation side, while the bottom is understood as the other side away from the chuck assembly operation surface.

[0058] The upper spindle 11 of the upper chuck assembly 1 is coupled to the upper chuck base 12. An upper locking plate 15, used to lock the upper chuck 14, is fixed to the end of the upper spindle 11. In the optional embodiments of the invention, the simplest form is to make a threaded hole or through hole in the center of the upper locking plate 15, which can be sleeved onto the end of the upper spindle 11, and further add an upper nut 16 to fix the upper locking plate 15 to the upper spindle 11. (See also...) Figure 3 An anti-loosening washer 17 is also added between the upper nut 16 and the upper locking plate 15.

[0059] Similarly, from the perspective of the lower chuck assembly 2, the lower spindle 21 of the lower chuck assembly 2 is coupled to the lower chuck base 22. The lower locking plate 25, used to lock the lower chuck 24, is fixed to the end of the lower spindle 21. In the optional embodiments of the invention, the simplest form is to make the center of the lower chuck 24 into a threaded hole or through hole, which can be sleeved onto the end of the lower spindle 21, and further fix the lower locking plate 25 on the lower spindle 21 by adding a nut. This structure can be understood as a mirror image of the upper chuck assembly 1; therefore, an exploded view of the corresponding lower chuck assembly 2 is not shown.

[0060] The upper locking plate 15 and the lower locking plate 25 can also be fixed with screws. However, screw fixing will either increase the volume of the upper spindle 11 and the lower spindle 21, or affect the subsequent interlocking of their central shafts. If a retaining ring is used, it will reduce the rotational stability of the upper locking plate 15 and the lower locking plate 25 after they are fixed, thus affecting the reliability of their subsequent locking of the upper chuck 14 and the lower chuck 24. Therefore, considering all factors, the following method is preferable: Figure 3 and Figure 4 The nut fixing shown is the preferred option. Of course, welding can also be used to fix the chuck and spindle as an alternative, but from the perspective of ease of maintenance and assembly, it is still not as convenient. Figure 3 and Figure 4 The example shown is the preferred method.

[0061] The lower spindle rotating assembly 3 is rotaryly coupled with the lower spindle 21. Interlocking of the upper spindle 11 and lower spindle 21 is achieved through the contact of the upper chuck assembly 1 and the lower chuck assembly 2. The lower spindle rotating assembly 3 drives the upper locking plate 15 on the upper spindle 11 and the lower locking plate 25 on the lower spindle 21 to rotate together, achieving synchronous and rapid loading and unloading of the upper chuck 14 and lower chuck 24. Here, the interlocking emphasizes that the upper spindle 11 and lower spindle 21 complete rotation at the same angle during rotation. In an optional embodiment of the invention, the following is proposed: Figure 3 and Figure 4One embodiment shown is that the end of the upper mandrel 11 is provided with a first graphic groove 111, and the end of the lower mandrel 21 is provided with a first graphic protrusion 211 of the same size as the first graphic groove 111 (e.g., Figure 14 The rectangular prism shown can also be a hexagonal prism, gear prism, elliptical prism, etc. The upper chuck assembly 1 moves downwards based on the push rod 42, abutting against the lower chuck assembly 2, which is fixed to the crossbeam of the frame 4 and located on the same central axis. At this time, the first graphic protrusion 211 is precisely embedded in the first graphic groove 111, completing the interlocking of the upper mandrel 11 and the lower mandrel 21. Figure 2 As shown, the corresponding drive mechanism of push rod 42 can be as follows: Figure 2 The servo motor 44 shown is an example; in addition, the drive mechanism can also be a traditional hydraulic cylinder or a pneumatic cylinder.

[0062] In this embodiment of the invention, the initial installation of both the upper and lower chucks is designed to be performed on the lower chuck base. By adding a lower spindle rotation assembly, and with the interlocking linkage between the upper and lower spindles, the installation is completed in one step: stacking, pushing down the push rod, and unlocking the lower spindle rotation assembly. This achieves a high degree of mechanical autonomy and solves the problems of high manual labor intensity and low efficiency when changing chucks in existing rear inflation devices.

[0063] Based on the embodiments of the present invention, and around the rotational coupling of the upper mandrel 11 and the upper chuck base 12, the embodiments of the present invention also provide an optional implementation scheme, such as... Figure 3 As shown, the upper chuck assembly 1 also includes an upper bushing 113, an upper sealing ring 114, and an upper friction ring 115. The bottom of the upper spindle 11 has a flange ring, which abuts against the bottom of the flange ring of the upper bushing 113. The cylindrical part of the upper bushing 113 is embedded in the central through-hole of the upper chuck base 12. The upper bushing 113 mainly serves to reduce wear during rotation of the upper spindle 11 and to limit the movement of the flange ring at the bottom of the upper spindle 11. The upper sealing ring 114 and the upper friction ring 115 work together with the upper locking plate 15 and the upper nut 16. The locking force generated by the threaded coupling between the upper nut 16 and the end of the upper spindle 11 is transmitted through the upper locking plate 15 and received by the upper friction ring 115, in conjunction with the flange ring at the bottom of the upper spindle 11, to achieve a stable, rotatable installation of the upper spindle 11 in the through-hole of the upper chuck base 12. In actual implementation, careful observation... Figure 3 and in conjunction with Figure 6 The exploded view shown reveals that one side of the upper locking plate 15 abuts against the upper nut 16, while the other side is locked to the stepped annular surface 116 of the upper spindle 11 (as shown). Figure 6As shown, the advantage of this design is that the rotation of the upper locking plate 15 is synchronized only with the upper spindle 11, and the so-called upper shaft sleeve 113 and upper friction ring 115 are to reduce the friction generated between the upper spindle 11 and the upper locking plate 15 and the upper chuck base 12 when they rotate.

[0064] Based on the embodiments of the present invention, and around the rotational coupling of the lower mandrel 21 and the lower chuck base 22, the embodiments of the present invention also provide an optional implementation scheme, such as... Figure 4 As shown, the lower chuck assembly 2 also includes a lower bushing 213, a lower sealing ring 214, and a lower friction ring 215 (which reduces friction). The lower spindle 21 has a flange ring at its bottom, which abuts against the bottom of the flange ring of the lower bushing 213. The cylindrical part of the lower bushing 213 is embedded in the central through-hole of the lower chuck base 22. The lower bushing 213 mainly reduces wear during rotation of the lower spindle 21 and limits the position of the flange ring at the bottom of the lower spindle 21. The lower sealing ring 214 and the lower friction ring 215 work together with the lower locking plate 25 and the lower nut 26. The locking force generated by the threaded coupling between the lower nut 26 and the end of the lower spindle 21 is transmitted through the lower locking plate 25 and supported by the lower friction ring 215. Combined with the flange ring at the bottom of the lower spindle 21, this allows the lower spindle 21 to be stably positioned in the through-hole of the lower chuck base 22 in a rotatable manner. In actual implementation, careful observation... Figure 4 Analysis reveals that one side of the lower locking plate 25 abuts against the lower nut 26, while the other side is locked to the stepped ring surface of the lower spindle 21. This has the advantage that the rotation of the lower locking plate 25 is synchronized only with the lower spindle 21. The so-called lower bushing 213 and lower friction ring 215 are used to reduce the friction between the lower spindle 21 and the lower chuck base 22 when the lower spindle 21 and the lower locking plate 25 rotate.

[0065] like Figure 5 As shown, this is an example of an optional locking plate 15 structure provided by an embodiment of the present invention. The locking plate 15 is composed of a mother ring 151 and a plurality of extension arms 152 arranged around the mother ring 151; Figure 5 The corresponding extension arms 152 are set to three, which fully considers the principle that three points form a surface. Furthermore, the number of three arms can adequately guarantee the width of each extension arm 152, thereby improving the locking force strength and stability during operation of the upper chuck 14. The upper chuck 14 is provided with a central cutout 141 to avoid the mother ring 151, and an outer cutout 142 to avoid the extension arms. The central cutout 141 and the outer cutout 142 are themselves a single cutout; their separate description here is merely for the convenience of describing the correspondence between features, and also for the convenience of having a reference object for describing the first positioning pin 121 later. Considering... Figure 5The current embodiment only uses a bottom view, which is not convenient for intuitive observation of the central cutout 141 and the outer cutout 142. Therefore, this embodiment further provides an exploded view of the upper chuck assembly 1, as shown below. Figure 6 As shown, in actual implementation, the central cutout 141 corresponds to the mother ring 151, and the outer cutout 142 corresponds to the extension arm 152. During assembly, the upper chuck 14 will use the central cutout 141 and the outer cutout 142 to pass through the upper locking plate 15 and abut against the upper chuck base 12. At this time, the relationship between the upper chuck 14 and the upper locking plate 15 when viewed from the horizontal plane is as follows: Figure 3 As shown. In principle, at this point, it is only necessary to rotate the upper locking plate 15 by 60° (to... Figure 5 and Figure 6 Taking the three extended arms shown as an example, if the number of extended arms is increased to four, the corresponding rotation angle will be adjusted to 45°, allowing the extended arm 152 to abut against the plate surface area of ​​the upper chuck 14, completing the locking process of the upper chuck 14. The corresponding locking and result process is as follows: when the extended arm 152 rotates to the plate surface area between the two outer extension cutouts 142, the upper locking plate 15 locks the upper chuck 14; when the extended arm 152 rotates into the outer extension cutout 142, the upper locking plate 15 unlocks the upper chuck 14. Figure 5 For example, its state is unlocked.

[0066] like Figure 8 As shown, the upper chuck base 12 is provided with a first positioning pin 121 in the area between the inner diameter of the central hollow 141 and the outer diameter of the mother ring 151; the first positioning pin 121 is used to embed into the preset first positioning hole 153 on the back of the extension arm 152 when the extension arm 152 rotates to the plate area between the two outer hollows (see reference). Figure 20 Therefore, it can be determined that the distance between the corresponding first positioning pin 121 and the central axis of the upper chuck assembly 1 and the distance between the first positioning hole 153 and the central axis of the upper chuck assembly 1 are the same, thus satisfying the above-mentioned embedding positioning requirements. Furthermore, in the upper chuck assembly 1 and the lower chuck assembly 2, the first positioning pin 121 on the upper chuck assembly 1 and the second positioning pin 221 on the lower chuck assembly 2, surrounding the upper locking plate 15 and the lower locking plate 25, as well as the upper chuck 14 and the lower chuck 24, adopt the same structure in the preferred implementation. This not only improves the utilization rate of spare parts storage space for maintenance, but also satisfies the technical requirement in the embodiments of the present invention that "the lower spindle rotation assembly 3 drives the upper locking plate 15 on the upper spindle 11 and the lower locking plate 25 on the lower spindle 21 to rotate together to achieve rapid loading and unloading of the chuck." This leads to a pre-defined condition: the locking and unlocking rotation strokes of the upper locking plate 15 and the lower locking plate 25 must be consistent.

[0067] Therefore, this embodiment also uses Figure 9The second positioning pin 221 in the lower chuck assembly 2 shown engages with the preset positioning hole 253 on the corresponding extension arm 252 to cooperate. Figure 8 To further explain, when the extension arm 152 rotates to the plate area between the two outer hollow sections, the first positioning pin 121 is embedded in the preset positioning hole on the back of the extension arm 152.

[0068] In this embodiment of the invention, the upper chuck assembly 1 is fixedly connected to the guide rod 41 on the frame 4, for reference. Figure 6 The exploded view shown and Figure 10 The cross-sectional view shown illustrates that one method employed in this embodiment of the invention involves cutting an annular groove / slot into the rod body at the end of the guide rod 41, and then using a pair of combination buckles 18 (such as...). Figure 7 (As shown) Locking. In addition, the upper chuck assembly 1 is connected to the push rod 42 shaft / clamp on the frame 4.

[0069] like Figures 10-12 As shown, this is a structural example of a retaining ring connection provided by an embodiment of the present invention. A pair of retaining grooves 421 are provided near the end of the push rod 42, and two crescent rings 422 are respectively embedded in one of the retaining grooves 421. The back of the upper chuck base 12 is constructed with one or more rings 122 of preset thickness to create a transverse annular groove 123 for vertically limiting the rotation of the push rod 42 along with the embedded crescent rings 422. Figure 11 As can be seen, in one embodiment of the present invention, two-stage pre-defined thickness rings 122 can be used to construct the transverse annular groove 123, providing the rotation space of the crescent ring 422 when it rotates with the push rod 42, and also providing relative synchronous movement in the vertical direction. Figure 11 A two-stage ring 122 is shown, with the lower ring having a Z-shaped cross-section and the upper ring having an inverted L-shaped cross-section. The reason for using a two-stage ring 122 is twofold: firstly, to reserve a certain length of push rod 42 for the location of the slot 421 (in... Figure 11 The middle part is the shaft between the slot 421 and the bottom of the push rod 42, thus ensuring the strength of the slot 421. On the other hand, it is the bottom of the upper spindle 11 (located in...). Figure 10 A certain clearance space is provided between the top of column 11 and the end of push rod 42.

[0070] like Figure 13 As shown, the lower chuck assembly 2 is fixed to the crossbeam 43 of the frame 4. Alternatively, the lower chuck assemblies 2 are fixed in pairs to the top and bottom surfaces of the crossbeam 43 of the frame 4, respectively, and the upper chuck assemblies 1 are arranged in pairs above and below the two lower chuck assemblies 2, as shown. Figure 2 As shown, it demonstrates that the solution proposed in the embodiments of the present invention is also applicable to the currently widespread single-rack multi-station application. Figure 2The middle part is characterized by two sets of rear inflation devices arranged in a mirror image on the upper and lower parts of the crossbeam 43.

[0071] The above embodiment has described an interlocking method. First graphic grooves 111 and first graphic protrusions 211 are respectively formed on the facing ends of the upper mandrel 11 and the lower mandrel 21. When the upper chuck assembly 1 and the lower chuck assembly 2 abut, the first graphic protrusions 211 are embedded in the first graphic grooves 111 to complete the interlocking. The structure of the upper mandrel 11 and the lower mandrel 21 can be shown separately as follows. Figure 14 As shown. As an equivalent implementation of the present invention, another optional interlocking method is provided, which involves swapping the positions of the corresponding grooves and protrusions, specifically:

[0072] On the opposing ends of the upper mandrel 11 and the lower mandrel 21, a second graphic protrusion 112 and a second graphic groove 212 are respectively formed. When the upper chuck assembly 1 and the lower chuck assembly 2 abut, the second graphic protrusion 112 is inserted into the second graphic groove 212 to complete interlocking. The matching structure of the upper mandrel 11 and the lower mandrel 21 can be shown separately as follows. Figure 15 As shown.

[0073] like Figure 16 As shown, and with reference Figure 9 In the cross-sectional view, the handle 31 of the lower spindle rotating assembly 3 is connected to the bottom end of the lower spindle 21, and the other end of the handle 31 is axially connected to the second push rod 32. In a specific implementation, the driving device for the second push rod 32 can be any one of a cylinder, a hydraulic cylinder, or a servo motor. However, as a preferred embodiment of the present invention, considering that the rotation angle of the corresponding lower locking plate 25 and the linked upper locking plate 15 has certain accuracy requirements, a servo motor is recommended as the preferred driving device. If further cost reduction is desired, a cylinder can be used for driving, while accuracy can be compensated by using a target position sensor. The above optional and preferred methods are all within the protection scope of the present invention.

[0074] Example 2:

[0075] This invention provides a method for quick installation and removal of a rear-inflatable chuck. Using the quick installation and removal device for the rear-inflatable chuck described in Example 1, when installing the upper chuck 14 and the lower chuck 24, as follows... Figure 17 As shown, the method includes:

[0076] In step 201, the lower chuck 24 is aligned and placed on the lower chuck base 22, and then the upper chuck 14 is stacked on the lower chuck 24.

[0077] To improve the stability of the upper chuck 14 stacked on the lower chuck 24, a structural improvement scheme is also provided in conjunction with the embodiments of the present invention, as shown in the reference. Figure 3 and Figure 4 ,like Figure 20 and Figure 21 As shown, a third positioning pin 243 and a third positioning hole 143 are also provided between the upper chuck 14 and the lower chuck 24. It should also be noted here that similar... Figure 14 and Figure 15 In the alternative embodiments shown, the positions of the corresponding third positioning hole 143 and third positioning pin 243 can be interchanged in the optional implementation of the present invention; and, in the optional implementation, the number of pairs of the third positioning pin 243 and third positioning hole 143 can be 2 pairs, 3 pairs, or even 4 pairs, etc. In the relevant structural drawings of the exemplary present invention, 2 pairs are shown as illustrative examples.

[0078] In step 202, the servo mechanism is activated, and the upper chuck base 12 is pushed toward the lower chuck base 22 by the push rod 42.

[0079] like Figures 18-21 As shown, where, Figure 18 This is a diagram showing the effect after the upper chuck base 12 abuts against the upper chuck 14. At this point, it is in an unlocked state. Figure 20 That is Figure 18 A cross-sectional view, through Figure 20 It was observed that at this time, the first positioning pin 121 on the upper chuck base 12 was not coupled to the first positioning hole 153 on the back of the upper locking plate 15, and the second positioning pin 221 on the lower chuck base 22 was not coupled to the second positioning hole 253 on the back of the lower locking plate 25, indicating that at this time... Figure 18 and Figure 20 It is still in the unlocked state and needs to be locked by step 203. Figure 20 It is shown from a cross-sectional view with the first locating pin 121 and the second locating pin 221, and Figure 21 This is shown from the perspective of the third positioning pin 243 and the matching third positioning hole 143. To facilitate understanding of the relationship between the various cross-sectional perspectives, embodiments of the present invention also provide, for example... Figure 18 The diagram shown illustrates the orientation relationship between the first positioning pin 121 and the second positioning pin 221 after the upper chuck assembly 1 is pressed down and engaged. Figure 19 As shown.

[0080] In step 203, after the interlocking of the upper spindle 11 and the lower spindle 21 is completed, the lower spindle rotation assembly 3 is started. The lower spindle rotation assembly 3 drives the upper locking plate 15 on the upper spindle 11 and the lower locking plate 25 on the lower spindle 21 to rotate together to achieve chuck locking.

[0081] As shown in the structural example in the accompanying drawings of this embodiment, the rotation angle in step 203 is 60°. After completing step 203, it is only necessary to adjust the push rod connected to the upper chuck assembly 1 to separate the upper chuck assembly 1 and the lower chuck assembly 2 to proceed with subsequent tire operation procedures. Figure 22 The figure shows a cross-sectional view of the state after the 60° rotation operation is completed, with the upper chuck 14 locked to the upper chuck base 12 via the upper locking plate 15 and the lower chuck 24 locked to the lower chuck base 22 via the lower locking plate 25.

[0082] In this embodiment of the invention, the initial stacking of the upper and lower chucks is designed to be carried out on the base of the lower chuck. By adding a lower spindle rotation assembly, and with the interlocking linkage between the upper and lower spindles, the alignment is completed in one step, the push rod is pressed down in one step, and the lower spindle rotation assembly is driven to unlock in one step. This achieves a high degree of mechanical autonomy and solves the problem of high manual labor intensity and low efficiency when changing chucks in existing rear inflation devices.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick loading and unloading device for a rear-inflated chuck, characterized in that, It includes an upper chuck assembly (1), a lower chuck assembly (2), and a lower spindle rotation assembly (3); The upper spindle (11) of the upper chuck assembly (1) is coupled to the upper chuck base (12) shaft, wherein the upper locking plate (15) for locking the upper chuck (14) is fixed to the end of the upper spindle (11); The lower spindle (21) of the lower chuck assembly (2) is coupled to the rotating shaft of the lower chuck base (22), wherein the lower locking plate (25) for locking the lower chuck (24) is fixed to the end of the lower spindle (21); The lower spindle rotating assembly (3) is coupled with the lower spindle (21) for rotational transmission. The upper spindle (11) and the lower spindle (21) are interlocked by the upper chuck assembly (1) and the lower chuck assembly (2). The lower spindle rotating assembly (3) drives the upper locking plate (15) on the upper spindle (11) and the lower locking plate (25) on the lower spindle (21) to rotate together to realize the synchronous and rapid loading and unloading of the upper chuck (14) and the lower chuck (24).

2. The quick loading and unloading device for the rear-inflated chuck according to claim 1, characterized in that, The upper locking plate (15) is composed of a mother ring (151) and a plurality of extension arms (152) arranged around the mother ring (151); the upper chuck (14) is provided with a central hollow (141) that avoids the mother ring (151) and an outer hollow (142) that avoids the extension arms. When the extension arm (152) rotates to the plate area between the two outer hollows (142), the upper locking plate (15) locks the upper chuck (14); when the extension arm (152) rotates into the outer hollow (142), the upper locking plate (15) unlocks the upper chuck (14).

3. The quick loading and unloading device for the rear-inflated chuck according to claim 2, characterized in that, The upper chuck base (12) is provided with a first positioning pin (121) in the area between the inner diameter of the central hollow (141) and the outer diameter of the mother ring (151); the first positioning pin (121) is used to be embedded in the preset first positioning hole (153) on the back of the extension arm (152) when the extension arm (152) is rotated to the plate area between the two outer hollows.

4. The quick loading and unloading device for the rear-inflated chuck according to claim 1, characterized in that, The upper chuck assembly (1) is fixedly connected to the guide rod (41) on the frame (4) and connected to the push rod (42) shaft or retaining ring on the frame (4).

5. The quick loading and unloading device for the rear-inflated chuck according to claim 4, characterized in that, The retaining ring connection specifically includes: A pair of slots (421) are provided near the end of the push rod (42), and two crescent rings (422) are respectively embedded in one side of the slot (421); the back of the upper chuck base (12) is constructed with one or more rings (122) of preset thickness to form a transverse annular groove (123) for vertically limiting the rotation of the push rod (42) and the crescent rings (422) that are embedded in it.

6. The quick loading and unloading device for the rear-inflated chuck according to claim 1, characterized in that, The lower chuck assembly (2) is fixed to the crossbeam (43) of the frame (4), or, The lower chuck assemblies (2) are fixed in pairs on the top and bottom of the crossbeam (43) of the frame (4), and the upper chuck assemblies (1) are arranged in pairs above and below the two lower chuck assemblies (2).

7. The quick loading and unloading device for a rear-inflated chuck according to any one of claims 1-6, characterized in that, On the opposing ends of the upper mandrel (11) and the lower mandrel (21), a first graphic groove (111) and a first graphic protrusion (211) are respectively formed. When the upper chuck assembly (1) and the lower chuck assembly (2) abut, the first graphic protrusion (211) is embedded in the first graphic groove (111) to complete interlocking; or, On the opposite ends of the upper mandrel (11) and the lower mandrel (21), a second graphic protrusion (112) and a second graphic groove (212) are respectively made. When the upper chuck assembly (1) and the lower chuck assembly (2) abut, the second graphic protrusion (112) is embedded in the second graphic groove (212) to complete interlocking.

8. The quick-release device for a rear-inflated chuck according to any one of claims 1-6, characterized in that, The handle (31) of the lower spindle rotating assembly (3) is connected to the bottom end of the lower spindle (21), and the other end of the handle (31) is connected to the second push rod (32).

9. The quick-release device for a rear-inflated chuck according to any one of claims 1-6, characterized in that, A set of positioning pins and positioning holes are also provided between the upper chuck (14) and the lower chuck (24).

10. A method for quick loading and unloading of a rear-inflated chuck, characterized in that, When using the quick-release device for the rear-inflated chuck according to any one of claims 1-9, the method for installing the upper chuck (14) and the lower chuck (24) includes: Align the lower chuck (24) with the lower chuck base (22), and then stack the upper chuck (14) on the lower chuck (24); Start the servo mechanism and use the push rod (42) to push the upper chuck base (12) toward the lower chuck base (22). After the upper spindle (11) and lower spindle (21) are interlocked, start the lower spindle rotation assembly (3). The lower spindle rotation assembly (3) drives the upper locking plate (15) on the upper spindle (11) and the lower locking plate (25) on the lower spindle (21) to rotate together to lock the chuck.

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