A capsule forming drum tire shoulder pad glue fitting auxiliary device

Abstract

The present invention discloses a capsule forming drum tire shoulder pad glue fitting auxiliary device, comprising an intermediate base assembly, a main frame body of which is provided with a plurality of piston cavities with piston mechanisms in a circular shape along the radial direction of the main axis, and a pneumatic drive structure for driving the piston mechanism; a plurality of support flap assemblies are respectively arranged at each piston mechanism; the support flap assembly comprises a base fixed to the end of the piston rod, two support plates are arranged axially along the main axis, one side of the two support plates is provided with two connecting seats hingedly connected to the two sides of the base through an optical axis, and are arranged in a V-shaped flipping state through a torsion spring on the optical axis; the end sides of the two connecting seats located at opposite corners are arc ends that can form a rolling friction fit with the reset bearing on the main frame to drive the support plate to flip to a planar unfolded state; the device is tubeless driven, and its support plate automatically rises and falls with the movement of the piston rod, and a mechanical hard limit structure is used to accurately position the outward extension distance and flipping state of the support plate, with good stability, high efficiency and low labor intensity.

Description

Technical Field

[0001] The invention relates to the technical field of capsule forming drums, in particular to a capsule forming drum tire shoulder pad glue laminating auxiliary device. Background Art

[0002] In existing four-drum forming machines for all-steel radial tires, there are generally two types of forming drums: mechanical drums and capsule drums. What is the same is that both types of forming drums must have an auxiliary device installed between the single drums on both sides during the shoulder pad bonding process. The function of the auxiliary device is to support the carcass tube 4 during the shoulder pad bonding process to ensure the bonding accuracy of the shoulder pad, while also being able to precisely control the bonding length of the shoulder pad. However, due to the limited space between the single drums on both sides, the auxiliary device needs to be flipped up during the tire blank shaping process to leave enough space for the single drums on both sides. On a mechanical drum, the auxiliary device can be linked with the single drums on both sides through a mechanical structure, and can stably achieve the flipping and falling movements; however, on a capsule drum, due to the limitations of the single drum structure on both sides, it cannot be linked through a mechanical structure; therefore, an auxiliary device with a relatively independent structure that can stably achieve the flipping and falling movements is particularly important.

[0003] The published patent CN113650333A provides a capsule forming drum tire shoulder pad glue bonding auxiliary device, which is installed on the forming drum main shaft through an intermediate frame. The intermediate frame is provided with eight groups of piston rods evenly distributed in the circumferential direction. The eight groups of support plates are respectively connected to the piston rods to realize the lifting and lowering movement of the support plates. At the same time, each group of support plates is connected to two groups of standard cylinders to realize the flipping and falling movement of the support plates. There are air holes on the main shaft, and compressed air is provided to the piston rods and cylinders through air pipes. However, the device has the following problems during assembly and use: 1) Since the air supply of the eight groups of piston rods and sixteen groups of standard cylinders is realized by arranging air pipes, the overall pipe layout of the device is large, the workload during installation is large, and the air pipes lack effective fixation, and there is a risk of scratches during operation; 2) The capsule drum of the forming machine needs to be replaced and maintained regularly. During the replacement of the drum, the device needs to be disassembled together. During disassembly, the air supply air pipe needs to be removed from the main shaft air hole first, and then the device is disassembled as a whole. Since the overall structure of the device is compact, the operating space is small. Therefore, the disassembly process is difficult and time-consuming. 3) During the shoulder pad bonding process, the support plate needs to be in a horizontal position. Since the support plate is supported by a cylinder below, the support is unstable, which affects the bonding effect. If the bonding effect is not ideal, manual adjustment is required, which will affect the production efficiency of the equipment and increase the labor intensity. 4) The installation method of the device and the main shaft has the risk of loosening. Under the influence of long-term large centrifugal force, the connecting parts themselves are at risk of deformation. The installation margin of the connecting parts' own mounting holes is also a potential loosening risk. If the device is loose, it will have a significant impact on the bonding accuracy, the life of the device itself, and the life of the main shaft.

[0004] Based on this, this design mainly takes the existing technology as the background to solve and optimize the problems existing in the existing technology, streamline the structure of the device, make it easier to operate and maintain, improve the stability of the device operation, and assist the stable operation of the device, which can greatly reduce the number of manual interventions, improve the production efficiency of the equipment, and reduce the intensity of manual labor. It is also an indispensable factor in realizing unmanned bonding of pad glue. Summary of the Invention

[0005] The purpose of the present invention is to provide a capsule forming drum tire shoulder pad glue bonding auxiliary device that solves the above technical problems.

[0006] To this end, the technical solution of the present invention is as follows:

[0007] A capsule forming drum tire shoulder pad glue bonding auxiliary device includes an intermediate base assembly, which includes a main frame body sleeved on the main shaft of the forming drum, a plurality of piston cavities are opened on the main frame body in a circumferential shape along the radial direction of the main shaft, a piston mechanism is provided in the piston cavity, and the piston mechanism includes a piston rod that performs telescopic movement in the piston cavity along the radial direction of the main shaft; a pneumatic drive structure is also provided on the main frame body, which includes an extension drive air path for driving all piston rods to extend outward synchronously and a retraction drive air path for driving all piston rods to retract inward synchronously; a plurality of support flap assemblies are evenly distributed on each piston rod along the circumferential direction of the intermediate base assembly Mechanism; the support flip plate assembly includes a base vertically fixed to the end of the piston rod, and two support plates are symmetrically arranged on both sides of the base along the main axis; two connecting seats are provided on one side of the support plate, and the two are hingedly connected to the base through an optical axis, and the two support plates are set in a V-shaped flip state through a torsion spring arranged on the optical axis; the end sides of the two connecting seats located in the diagonal direction are processed into arc ends, and the two and the reset bearings rotatably arranged on both sides of the piston mechanism on the main frame can form a rolling friction fit when they abut against each other, so as to drive the two connecting seats to rotate in opposite directions, so that the two support plates are flipped to a planar unfolded state.

[0008] Furthermore, the piston mechanism also includes a fixing sleeve and an end cover; an annular boss is provided at one end of the piston rod and is built into the piston cavity to separate the extension cavity and the retraction cavity; the fixing sleeve is arranged on the outside of the piston rod and fixed on the inner wall of the piston cavity; the end cover is arranged on the outside of the piston rod end and closes the piston cavity opening.

[0009] Furthermore, sealing rings are provided between the outer wall of the annular boss of the piston rod and the wall of the radial mounting hole, and between the wall of the through hole of the end cover and the rod wall of the piston rod.

[0010] Furthermore, the main frame is split into two semi-annular bodies, and the end faces of the two are connected by a locking block and are tightly clamped to the outside of the main shaft.

[0011] Furthermore, a plurality of positioning pins are arranged at intervals on the inner annular surface of the main frame, and a plurality of matching positioning grooves are correspondingly opened on the circumferential outer wall of the main shaft, so that the main frame is sleeved on the outside of the main shaft in a manner that the plurality of positioning pins on it are respectively inserted into the positioning grooves on the main shaft.

[0012] Furthermore, in the pneumatic drive structure, one end of the extending drive air circuit is respectively connected to the bottom of each piston cavity, and the other end is located on the inner annular surface of the main frame and is connected to the first air circuit opened on the side wall of the main shaft; one end of the retracting drive air circuit is respectively connected to the opening side of each piston cavity, and the other end is located on the inner annular surface of the main frame and is connected to the second air circuit opened on the side wall of the main shaft.

[0013] Furthermore, guide holes are opened on both sides of each piston mechanism on the main frame, and a guide column is provided at the bottom of the base. The guide column is slidably inserted in the guide hole to radially guide the support flap assembly.

[0014] Furthermore, limit blocks are provided on both sides of each piston mechanism on the main frame, and a limit claw is provided at the bottom of the base. The bottom claw of the limit claw can abut against the limit block as the piston rod extends outward to limit the maximum extension length of the piston rod.

[0015] Furthermore, an adjusting bolt is passed through and fixed on the claw portion of the limiting claw along the radial direction of the main frame, and the adjusting bolt can abut against the limiting block as the piston rod extends outward.

[0016] Furthermore, wedge-shaped pads are provided on adjacent side end walls of the two support plates, and the two support plates are arranged with inclined surfaces facing each other, so that the two support plates abut against the top of the base through the wedge-shaped pads and are arranged in a V-shaped flip state.

[0017] Compared with the prior art, the capsule forming drum tire shoulder pad glue fitting auxiliary device has the following beneficial effects:

[0018] (1) The device realizes the tubeless driving of multiple piston mechanisms by providing a pneumatic drive structure on the main frame to supply air to the piston mechanism; at the same time, by providing a flip torsion spring at the hinge of the support plate, and by structural coordination between the connecting seat of the support flap assembly and the reset bearing of the intermediate base assembly, the support plate is flipped and unfolded by utilizing the lever principle, thus completely replacing the original cylinder-driven support plate lifting and lowering action; the above structural design not only greatly simplifies the structure and reduces the workload during the assembly process, but also enables rapid disassembly and assembly on the main shaft, facilitating subsequent maintenance work;

[0019] (2) The device is designed with limit claws, adjustment bolts, hard limit blocks and wedge-shaped pads, that is, the mechanical hard limit is used to position the support plate's extension distance and different flipping states. This not only overcomes the problem of support plate position accuracy caused by cylinder control, but also can adapt to different specifications of forming drums; thereby effectively improving the stability of the shoulder pad glue bonding effect, greatly reducing the number of manual interventions, improving the production efficiency of the equipment, and reducing manual labor intensity. It is also an indispensable factor in realizing unmanned pad glue bonding.

[0020] (3) The intermediate base assembly of the device adopts a split structure, and is fixed on the main shaft by the mutual cooperation between the locking block and the groove, and the mutual cooperation between the positioning pin and the positioning groove, thereby eliminating the hidden danger of the device loosening during the rotation of the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the assembly structure of the intermediate base assembly and the single supporting flap assembly of the bladder building drum tire shoulder pad glue bonding auxiliary device relative to the main shaft of the building drum in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of one side of the capsule forming drum tire shoulder pad glue bonding auxiliary device in an embodiment of the present invention;

[0023] Figure 3 This is a schematic structural diagram of the other side of the capsule-molded drum tire shoulder pad glue bonding auxiliary device in an embodiment of the present invention;

[0024] Figure 4 A partial cross-sectional view of the intermediate base assembly of the capsule forming drum tire shoulder pad adhesive bonding auxiliary device in an embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the support flap assembly of the capsule forming drum tire shoulder pad glue bonding auxiliary device in an embodiment of the present invention;

[0026] Figure 6 This is a front view structural schematic diagram of the capsule forming drum tire shoulder pad glue bonding auxiliary device at the initial loading position in an embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the side structure of the capsule forming drum tire shoulder pad glue bonding auxiliary device in the bonding position according to an embodiment of the present invention;

[0028] Figure 8 Schematic diagram of the side structure of the capsule forming drum tire shoulder pad glue fitting auxiliary device in the embodiment of the present invention in the shaping position;

[0029] Figure 9It is a front view structural schematic diagram of the support flap assembly during the change from the bonding position to the shaping position of the capsule forming drum tire shoulder pad glue bonding auxiliary device in an embodiment of the present invention;

[0030] Figure 10 It is a front view structural schematic diagram of the support flap assembly of the capsule forming drum tire shoulder pad glue bonding auxiliary device in an embodiment of the present invention at the tire unloading position (i.e., the initial loading position). DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention in any way.

[0032] See also Figure 1 The capsule forming drum tire shoulder pad glue bonding auxiliary device includes an intermediate base assembly 1 and eight supporting flap assemblies 2 evenly distributed along the circumferential direction of the intermediate base assembly 1; the intermediate base assembly 1 is an annular structure, which is sleeved and fixed on the outside of the center position of the main shaft 3 of the forming drum to rotate synchronously with the main shaft 3.

[0033] See also Figure 1 and Figure 4 The intermediate base assembly 1 includes a main frame body 101 with an annular structure, the size of the center hole of which matches the size of the main shaft 3 so that it can just embrace the outside of the main shaft 3.

[0034] The main frame 101 is provided with eight piston cavities evenly distributed in a circular shape along the radial direction of the main shaft 3. The piston cavities are provided with piston mechanisms. The piston rods 106 of the eight piston mechanisms are radially slidably arranged in the eight piston cavities to synchronously perform telescopic motion along the radial direction of the main shaft 3.

[0035] In this embodiment, eight piston chambers are radially opened from the outer annular surface of the main frame 101, and the piston mechanism includes a piston rod 106, a fixing sleeve 112 and an end cover 109; the piston rod 106 is a cylindrical rod body with an annular boss at one end, the size of the annular boss is adapted to the aperture of the piston chamber, and the end of the piston rod 106 with the annular boss is built into the piston chamber, and the piston chamber is divided into an extension chamber and a retraction chamber by the annular boss, the extension chamber is close to the bottom of the piston chamber, and the retraction chamber is close to the opening of the piston chamber; the fixing sleeve 112 is a cylindrical sleeve body, which is sleeved on the outside of the rod body of the piston rod 106 and fixed on the hole wall near the open end side of the piston chamber to limit the upward distance of the annular boss; the end cover 109 is a plate body with a through hole in the center, which is sleeved on the outside of the rod body of the piston rod 106 and fixed to the outer annular surface of the main frame 101 by screws evenly distributed along the circumference to close the open end of the piston chamber.

[0036] As a preferred technical solution of this embodiment, an annular sealing groove with a built-in first sealing ring 111 is opened on the outer wall of the annular boss of the piston rod 106 to form a seal between the annular boss and the piston cavity wall; an annular sealing groove with a built-in second sealing ring 110 is opened on the through hole wall of the end cover 109 to form a seal between the through hole wall of the end cover 109 and the rod wall of the piston rod 106; wherein, the first sealing ring 111 and the second sealing ring 110 are preferably X-shaped sealing rings.

[0037] In order to facilitate the assembly between the main frame 101 and the main shaft 3, the main frame 101 is split into two semi-annular bodies, and a T-shaped groove is respectively opened on the two side ring walls where the two end faces meet, and the two T-shaped grooves located on the same mating surface are connected to form an I-shaped groove; a T-shaped locking block 103 is built into each I-shaped groove, which is composed of an embedded block and a locking bolt. The embedded block is built into one end side of the T-shaped groove, and one end of the locking bolt is fixed on the embedded block and the other end extends into the other end side of the T-shaped groove. It is limited in the other T-shaped groove by the gasket and locking nut mounted thereon; furthermore, by symmetrically assembling two T-shaped locking blocks 103 at each end of the two semi-annular bodies, the two semi-annular bodies of the main frame 101 are detachably connected and fixed as a whole. Among them, the gasket is preferably a NORD-LOCK washer to effectively prevent the screws of the locking block assembly from loosening.

[0038] In order to prevent the intermediate base assembly 1 from rotating relative to the main shaft 3 when it rotates with the main shaft 3, two cylindrical positioning pins 104 are evenly distributed along the circumferential direction on the inner ring surface of the main frame 101, and the two are distributed on the two semi-annular bodies; specifically, the two positioning pins 104 are partially penetrated in the radial direction and fixed on the inner ring surface of the main frame 101; correspondingly, two cylindrical positioning grooves 303 are evenly distributed on the circumferential outer wall of the main shaft 3, and the hole depth of the positioning grooves 303 is adapted to the length of the positioning pins 104 located on the outside of the main frame 101; when assembling the main frame 101 and the main shaft 3, the positioning pins 104 on the two semi-annular bodies of the main frame 101 are respectively embedded in the positioning grooves 303 on the main shaft 3, and then connected and fixed by four T-shaped locking blocks 103, so that the intermediate base assembly 1 is tightly embraced on the outside of the main shaft 3.

[0039] A pneumatic drive structure is also provided on the main frame 101, which includes an extension drive air circuit and a retraction drive air circuit opened on the main frame 101; wherein, one end of the extension drive air circuit is respectively connected to the cavity bottom of each piston cavity, and the other end is connected to the first air circuit opened on the main shaft 3, so as to sequentially deliver the compressed air to the cavity bottom of each piston cavity (i.e. the above-mentioned extension cavity) through the first air circuit and the extension drive air circuit, thereby pushing the piston rod 106 to extend outward; one end of the retraction drive air circuit is respectively connected to the opening side of each piston cavity, and the other end is connected to the second air circuit opened on the main shaft 3, so as to sequentially deliver the compressed air to the opening side of each piston cavity (i.e. the above-mentioned retraction cavity) through the second air circuit and the retraction drive air circuit, thereby driving the piston rod 106 to retract inward.

[0040] See also Figure 1 and Figure 4 In order to achieve communication with an external air source for air supply, in this embodiment, two radial ventilation grooves 102 are symmetrically opened on the inner annular surface of the main frame 101, and the two are distributed on the two semi-annular bodies of the main frame 101; correspondingly, two air supply channels 302 are symmetrically arranged in the opposite side walls of the main shaft 3 along the axial direction from the end surface of one end of the main shaft 3. Since the intermediate base assembly 1 is installed at the middle position of the main shaft 3, the other end of the air supply channel 302 is also opened to the middle position of the main shaft 3; from the other ends of the two air supply channels 302, air outlet holes 301 are respectively opened radially outward to the outer wall of the main shaft 3; the opening positions of the two air outlet holes 301 are adapted to the opening positions of the two radial ventilation grooves 102, so that when the intermediate base assembly 1 is installed on the main shaft 3, the two radial ventilation grooves 102 on the main frame 101 are respectively connected to the two air outlet holes 301 on the main shaft 3. As a preferred technical solution of this embodiment, an annular sealing groove with a built-in third sealing ring 105 is opened at the notch of each radial vent groove 102 to form a seal at the junction between the radial vent groove 102 and the air outlet 301.

[0041] See also Figure 2 In order to achieve synchronous air supply to each extension cavity, in this embodiment, two first communicating air grooves 115 are symmetrically provided on one side end surface of the two semi-annular bodies and close to the inner annular surface of the main frame 101, and the two are distributed on the two semi-annular bodies of the main frame 101; specifically, each first communicating air groove 115 is an arc-shaped groove, and a first input branch 116 connected to one of the radial ventilation grooves 102 and four first output branches 117 respectively connected to the bottom of the four piston chambers on the semi-annular body are provided at intervals at the bottom of the groove; a first connecting branch 118 is further provided between the two first output branches 117 located on the end sides of the two semi-annular bodies and close to the first input branch 116, which is connected through the two semi-annular bodies connected together.

[0042] Each first air communication groove 115 is enclosed by an arcuate pressure plate 108, which is secured to one end face of the semi-annular body via screws evenly spaced along the axial direction. As a preferred technical solution of this embodiment, an annular groove containing a fourth sealing ring 107 is provided at the notch of the first air communication groove 115, thereby forming a seal at the junction of the pressure plate 108 and the first air communication groove 115.

[0043] See also Figure 3 In order to achieve synchronous air supply to each retraction chamber, in this embodiment, two second communicating air grooves 119 are symmetrically opened on the other side annular surface of the main frame body 101 and close to the outer annular surface of the main frame body 101, and the two are distributed on the two semi-annular bodies of the main frame body 101; wherein, the second communicating air groove 119 is also an arc-shaped groove, and a second input branch 120 connected to another radial ventilation groove 102 and four second output branches 121 respectively connected to the opening sides of the four piston chambers on the semi-annular body are opened at intervals at the bottom of the groove; a second connecting branch 122 connecting the two second communicating air grooves 119 is further opened near the second input branch 120 and located on the end sides of the two semi-annular bodies, which is connected through the two semi-annular bodies connected together.

[0044] Each second air communication groove 119 is enclosed by an arcuate pressure plate 108, which is secured to the other end face of the semi-annular body by screws evenly spaced along the axial direction. As a preferred technical solution of this embodiment, an annular groove containing a fourth sealing ring 107 is provided at the notch of the second air communication groove 119, thereby forming a seal at the junction of the pressure plate 108 and the second air communication groove 119.

[0045] Furthermore, a radial vent groove 102, a first input branch 116, a first connecting vent groove 115, a first connecting branch 118, and four first output branches 117 together constitute an extension drive air circuit; another radial vent groove 102, a second connecting vent groove 119, a second input branch 120, a second connecting branch 122, and four second output branches 121 together constitute a retraction drive air circuit; an air supply duct 302 and an air outlet hole 301 connected thereto form a first air circuit on the main shaft 3, which is used to be connected to the above-mentioned radial vent groove 102 constituting the extension drive air circuit; and another air supply duct 302 and an air outlet hole 301 connected thereto form a second air circuit on the main shaft 3, which is used to be connected to the above-mentioned radial vent groove 102 constituting the retraction drive air circuit.

[0046] In actual application, the external gas source is connected to the first gas path and the second gas path on the main shaft 3 through pipelines respectively, and compressed gas is supplied to the two gas paths respectively to achieve synchronous driving of the eight piston rods 106 to extend outward or retract inward.

[0047] See also Figure 1The eight supporting flap assemblies 2 are evenly distributed along the circumferential direction of the intermediate base assembly 1 and are respectively connected to the eight groups of piston mechanisms of the intermediate base assembly 1 in a one-to-one correspondence.

[0048] See also Figure 5 The supporting flap assembly 2 includes a base 201, which is a cross-shaped block; a mounting groove is opened at the center of the bottom surface of the base 201, and the rod end of the piston rod 106 is inserted into the mounting groove, and the supporting flap assembly 2 is connected to the rod end of the piston rod 106 by fastening bolts that are sequentially passed through the base 201 and the piston rod 106; then, the supporting flap assembly 2 is driven by the piston rod 106 to synchronously perform telescopic movement along the radial direction of the intermediate base assembly 1.

[0049] Two guide pillars 202 are arranged on the bottom surface of the base 201 along the circumferential direction of the main frame body 101, and the two are vertically fixed on the bottom surfaces of a group of opposite side protrusions of the base 201; correspondingly, two radial guide holes 113 are opened on the outer annular surface of the main frame body 101 on both sides of the piston cavity; the two guide pillars 202 can be inserted into the two guide holes 113 in a radially sliding manner to radially guide the support flap assembly 2 during the telescopic movement of the piston rod 106.

[0050] Two limiting claws 210 are provided on the bottom surface of the base 201 along the axial direction of the main frame 101, and the two are vertically fixed on the bottom surface of the other set of opposite side protrusions of the base 201; correspondingly, a limiting block 114 is fixed on each of the two end ring walls of the main frame 101 on both sides of each piston cavity; in this embodiment, the limiting claws 210 are Z-shaped, and the horizontal portions of one end of the two limiting claws 210 are fixed to the base 201 by bolts, and the horizontal portions of the other end are provided as claws along the circumference of the main frame 101, and the claws of the two are facing oppositely to separate They respectively cooperate with the upper limit blocks 114 distributed on the end surfaces of the main frame 101 at both ends; in actual application, the claws of the two limit claws 210 are initially arranged close to the center hole of the main frame 101 when the piston rod 106 is in the retracted state; and when the piston rod 106 extends outward to the maximum length, the claws of the two limit claws 210 abut against the two limit blocks 114, that is, the two limit claws 210 are respectively blocked by the two limit blocks 114 from continuing to move radially outward; at the same time, this structural design also has the effect of preventing the piston rod from falling out of the cylinder.

[0051] As a preferred technical solution of this embodiment, an adjusting bolt 211 is provided on the claw portion of the limiting claw 210 along the radial direction of the main frame 101. In actual application, the maximum outward extension distance of the support flap assembly 2 can be adjusted by adjusting the length of the adjusting bolt 211 extending above the claw portion, thereby making the device widely applicable to carcass tubes 4 of different sizes.

[0052] In addition, in the structural design of each supporting flap assembly 2, the two limiting claws 210 and the two limiting blocks 114 are evenly distributed on both sides of the main frame 101, so that the supporting flap assembly 2 can be evenly stressed on both sides during operation, and the operation will become smoother.

[0053] Two support plates 209 are symmetrically positioned on the other set of opposite side bumps of the base 201, arranged along the axial direction of the main shaft 3. Two spaced-apart connecting seats 203 are formed on the outwardly extending side of each support plate 209 where it meets the bump. The two connecting seats 203 are fitted into the adjacent bumps and articulated via an optical axis 204 that passes through the two connecting seats 203 and the bumps. Hard stoppers are also provided on both end faces of the other set of opposite side bumps, cooperating with the bottom surfaces of the support plates 209, allowing the two support plates 209 to be flipped to their maximum flat, unfolded position. The dimensions of the support plates 209 are adapted to the dimensions of the shoulder pads attached to the sides of the carcass tube and the spacing between them, ensuring that the support plates 209 support the shoulder pads on both sides of the carcass tube.

[0054] Both ends of each optical axis 204 extend to the outside of the two connecting seats 203, so that a torsion spring 205 is sleeved on the end of each optical axis 204; one end of each torsion spring 205 is embedded in the slot opened at the end face of the optical axis, and the other end is inserted into the slot opened on the adjacent side block 208, so that the two support plates 209 can automatically flip upward under the action of the torsion spring 205 and be arranged in a V-shaped flipped state; preferably, a baffle 206 and a shaft retaining ring 207 are installed on both end sides of each optical axis 204 to prevent the torsion spring 205 from falling off from the end side of the optical axis 204.

[0055] As a preferred technical solution of this embodiment, two wedge-shaped pads 212 are symmetrically arranged on the adjacent side end walls of the two support plates 209, and the two are fixed on the end walls of the support plates 209 with their inclined surfaces facing each other, so that the two support plates 209 set in a V-shaped flip state are abutted against the top surface of the base 201 through the inclined surfaces of the wedge-shaped pads 212. While achieving buffering, it ensures that the two support plates 209 are set in a V-shaped flip state to avoid being unable to flip and unfold due to excessive flipping; the wedge-shaped pads 212 are preferably made of nylon.

[0056] The end side of a connecting seat 203 on each support plate 209 is processed into an arc-shaped end, and correspondingly, two reset bearings 213 are rotatably arranged on both sides of the piston mechanism on the main frame 101; wherein, the reset bearing 213 is embedded in a bearing mounting groove radially opened on the outer annular surface of the main frame 101, and is fixed to the rotating shaft in the circumferential direction of the main frame 101 to be freely rotatable; in order to balance the force on the main frame 101, the two connecting seats 203 processed into arc-shaped ends are located in the diagonal direction; the arc-shaped ends of the two connecting seats 203 and the two reset bearings 213 on the main frame 101 can form a rolling friction fit, so that when the arc-shaped ends and the reset bearings 213 are abutted against each other and pressed down, they cooperate, and the two connecting seats 203 are driven to rotate in opposite directions by forming a lever-like motion structure between the two, so that the two support plates 209 are flipped to the expanded state.

[0057] The specific cooperation process between the connecting seat 203 and the reset bearing 213 is as follows: when the piston rod 106 retracts into the piston chamber, the two support plates 209 arranged in a V-shaped flip state gradually fall back until the two connecting seats 203 are in contact with the two reset bearings 213 respectively. Figure 10 Then, as the piston rod 106 continues to retract, sliding friction begins to occur between the connecting seat 203 and the reset bearing 213. Under the action of the sliding friction, the connecting seat 203 begins to rotate relative to the reset bearing 213 around the optical axis 204; since the relative rotation directions of the two connecting seats 203 are opposite, the two support plates 209 gradually flip over to the expanded state, as shown. Figure 6 shown.

[0058] The working principle and working process of the capsule forming drum tire shoulder pad glue fitting auxiliary device are described in detail as follows.

[0059] The conventional bladder drum includes a main shaft 3. The bladder drum shoulder gluing auxiliary device of this embodiment is mounted and fixed in the middle of the main shaft 3. Bladder drums are also mounted symmetrically on both sides of the main shaft 3. During operation, a carcass barrel 4 is mounted on the outer sides of the two bladder drums, and the tire laminating, shaping, and unloading processes are sequentially completed based on the carcass barrel 4. During the laminating process, the bladder drum shoulder gluing auxiliary device of this embodiment expands outward and is centrally supported on the inner wall of the carcass barrel 4 to assist in laminating.

[0060] See also Figure 6In the initial state, the capsule forming drum tire shoulder pad glue fitting auxiliary device is in the loading position; specifically, the piston rods 106 of the eight piston assemblies on the intermediate base assembly 1 are all retracted; the two connecting seats 203 of each supporting flap assembly 2 are respectively against the reset bearings 213 on both sides of the piston mechanism, so that the support plates 209 on both sides are fully expanded; at this time, the outer diameter of the annular body formed by the eight supporting flap assemblies 2 on the outer periphery of the intermediate base assembly 1 is the smallest, and is smaller than the outer diameter of the capsule drums on both sides, so that the carcass tube 4 can be smoothly mounted on the outside of the two capsule drums to complete the loading process.

[0061] See also Figure 7 After the loading is completed, the capsule forming drum tire shoulder pad glue bonding auxiliary device is transformed from the loading position to the bonding position; specifically, the piston rods 106 of the eight piston assemblies on the intermediate base assembly 1 are synchronously extended outward under the action of compressed air until the limiting claws 210 of each supporting flap assembly 2 hit the limiting block 114 and reach the maximum extended length position; because each supporting flap assembly 2 is surrounded by the tire tube 4 in the circumferential direction during the process of extending outward with the piston rod 106, the support plates 209 on both sides of each supporting flap assembly 2 remain in a fully expanded state, and the support plates 209 are tightly against the inner wall of the tire tube 4, effectively assisting the subsequent tire shoulder pad glue bonding process of the tire tube 4.

[0062] See also Figure 8 and Figure 9 After the shoulder pad glue is attached, the capsule forming drum shoulder pad glue attachment auxiliary device is immediately transformed from the attachment position to the shaping position; specifically, the piston rods 106 of the eight piston assemblies on the middle base assembly 1 maintain the current outward extended state under the action of compressed air, and the capsule drums on both sides move synchronously along the main shaft 3 toward the center position of the main shaft, so that the carcass tube 4 gathers toward the middle and expands; because the inner diameter of the carcass tube 4 also increases during the expansion process and breaks away from the support plate 209, at this time, the support plates 209 on both sides of each support flap assembly 2 are flipped upward under the action of the torsion spring 205, giving the capsule drums on both sides a larger axial movement space, avoiding the support plates 209 of the support flap assembly 2 from interfering with the capsule drum, thereby affecting the tire blank shaping effect.

[0063] See also Figure 9 and Figure 10 , the tire blank is shaped, and the capsule forming drum tire shoulder pad glue bonding auxiliary device is immediately transformed from the shaping position to the tire unloading position (that is, the initial loading position); specifically, the piston rods 106 of the eight piston assemblies on the intermediate base assembly 1 are synchronously retracted inwards under the action of compressed air, and drive each supporting flap assembly 2 to fall back to the side of the intermediate base assembly 1; during the falling process of each supporting flap assembly 2, the connecting seat 203 contacts the reset bearing 213 at the corresponding position and generates sliding friction, so that the support plate 209 connected to the connecting seat 203 is flipped and unfolded again, and is in the fully unfolded state of the initial state, that is Figure 6 The status shown is waiting for the next incoming material to be loaded onto the drum.

[0064] Based on the above process description, the capsule forming drum tire shoulder pad glue bonding auxiliary device cycles back and forth in sequence according to the loading position, bonding position, shaping position, and tire unloading position (also known as the loading position).

Claims

1. A capsule forming drum tire shoulder pad glue fitting auxiliary device, characterized in that: The present invention comprises an intermediate base assembly (1), which comprises a main frame (101) sleeved on the main shaft (3) of the forming drum, a plurality of piston cavities are opened in a circumferential shape along the radial direction of the main shaft (3) on the main frame (101), a piston mechanism is provided in the piston cavity, and the piston mechanism includes a piston rod (106) that performs telescopic movement along the radial direction of the main shaft (3) in the piston cavity; the main frame (101) is split into two semi-annular bodies, and the end faces of the two are connected by a locking block (103) and are tightly clamped to the outside of the main shaft (3); a plurality of positioning pins (104) are arranged at intervals on the inner ring surface of the main frame (101), and the main shaft (3) is fixed to the main shaft (3). A plurality of matching positioning grooves (303) are correspondingly provided on the circumferential outer wall of the main shaft (3), so that the main frame (101) is sleeved on the outside of the main shaft (3) in a manner that the plurality of positioning pins (104) thereon are respectively inserted into the positioning grooves (303) on the main shaft (3); a pneumatic drive structure is also provided on the main frame (101), which includes an extension drive air circuit for driving all piston rods (106) to extend outward synchronously and a retraction drive air circuit for driving all piston rods (106) to retract inward synchronously; one end of the extension drive air circuit is respectively connected to the bottom of each piston cavity, and the other end is located at the main frame (101). The inner annular surface of the main frame (101) is connected to the first air path provided on the side wall of the main shaft (3); one end of the retraction drive air path is connected to the opening side of each piston cavity, and the other end is located on the inner annular surface of the main frame (101) and is connected to the second air path provided on the side wall of the main shaft (3); a plurality of support flap assemblies (2) are respectively arranged at each piston mechanism; the support flap assembly (2) includes a base (201) vertically fixed to the rod end of the piston rod (106), and two support plates (209) are symmetrically arranged on both sides of the base (201) along the axis of the main shaft (3); one side of the support plate (209) Two connecting seats (203) are provided, and the two connecting seats (203) are hingedly connected to the base (201) through an optical axis (204), and the two support plates (209) are arranged in a V-shaped flip state through a torsion spring (205) arranged on the optical axis (204); the end sides of the two connecting seats (203) located in the diagonal direction are processed into arc-shaped ends, and the two connecting seats (203) and the reset bearings (213) rotatably arranged on both sides of the piston mechanism on the main frame (101) can form a rolling friction fit when they abut against each other, so as to drive the two connecting seats (203) to rotate in the opposite direction, so that the two support plates (209) are flipped to a flat unfolded state.

2. The capsule forming drum tire shoulder pad glue fitting auxiliary device according to claim 1, characterized in that: The piston mechanism further includes a fixed sleeve (112) and an end cover (109); an annular boss is provided at one end of the piston rod (106) and is built into the piston cavity to separate the extension cavity and the retraction cavity; the fixed sleeve (112) is sleeved on the outside of the piston rod (106) and fixed on the inner wall of the piston cavity; the end cover (109) is sleeved on the outside of the rod end of the piston rod (106) and closes the piston cavity opening.

3. The capsule forming drum tire shoulder pad glue bonding auxiliary device according to claim 2, characterized in that: A sealing ring is provided between the outer wall of the annular boss of the piston rod (106) and the wall of the radial mounting hole, and between the wall of the through hole of the end cover (109) and the rod wall of the piston rod (106).

4. The capsule forming drum tire shoulder pad glue fitting auxiliary device according to claim 1, characterized in that: Guide holes (113) are provided on both sides of each piston mechanism on the main frame (101), and a guide column (202) is provided at the bottom of the base (201). The guide column (202) is slidably inserted into the guide hole (113) to radially guide the support flap assembly (2).

5. The capsule forming drum tire shoulder pad glue fitting auxiliary device according to claim 1, characterized in that: Limiting blocks (114) are provided on both sides of each piston mechanism on the main frame (101), and a limiting claw (210) is provided at the bottom of the base (201). The bottom claw of the limiting claw (210) can abut against the limiting block (114) as the piston rod (106) extends outward, thereby limiting the maximum extension length of the piston rod (106).

6. The capsule forming drum tire shoulder pad glue bonding auxiliary device according to claim 1, characterized in that: An adjusting bolt (211) is radially passed through and fixed on the claw portion of the limiting claw (210) along the main frame (101). The adjusting bolt (211) can abut against the limiting block (114) as the piston rod (106) extends outward.

7. The capsule forming drum tire shoulder pad glue bonding auxiliary device according to claim 1, characterized in that: Wedge-shaped pads (212) are provided on adjacent side end walls of the two support plates (209), and the two support plates (209) are arranged in a manner of facing each other with inclined surfaces, so that the two support plates (209) abut against the top of the base (201) through the wedge-shaped pads (212) and are arranged in a V-shaped flip state.

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