A forming drum with quick diameter adjustment

Abstract

The present application relates to the technical field of tire forming drum, and particularly relates to a forming drum capable of quickly adjusting diameter, which comprises a main shaft and an expansion and contraction assembly sleeved on the main shaft and capable of moving radially and axially, left and right guide discs for guiding radial movement of the expansion and contraction assembly are arranged at two ends of the expansion and contraction assembly on the main shaft, a push rod for driving the expansion and contraction assembly to move axially is arranged in the main shaft, and an adjusting assembly is abutted against one end of the expansion and contraction assembly, the adjusting assembly is arranged at one end of the main shaft, the quick adjustment of the radial diameter of the expansion and contraction assembly through the adjusting assembly can change the diameter without replacing the whole forming drum, quickly switch different forming diameters, reduce the time for replacing the forming drum, and the adjustment is convenient, fast, accurate and reliable in positioning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tire forming drum, in particular to a forming drum capable of quickly adjusting diameter. BACKGROUND

[0002] The tire forming drum is installed on the tire forming machine and is used for attaching the inner liner and the body cord in the production process of the radial tire tire blank. Different inch tires require different diameter forming drums, and different diameter forming drums are also required in the same inch tire to adapt to different specifications of the process. At present, the market is a single diameter fixed forming drum, and each forming drum has only a single diameter that cannot be adjusted. Due to the different diameter requirements of the tire blank production process, the corresponding forming drum needs to be replaced each time, which increases the replacement time and labor cost, affecting the overall production efficiency; and the purchase of multiple diameter forming drums results in a substantial increase in manufacturing cost.

[0003] In addition, with the development of the new energy automobile industry, the continuous pursuit of various comfort and intelligent configurations of automobiles has become a necessary means for new energy automobile manufacturers to adapt to market competition. For automobile tires, through technical development, low noise (silent) tires have appeared on the market. The automobile equipped with this tire can significantly reduce the resonance noise generated by the vehicle during operation. The technical solution of this low noise (silent) tire is generally to attach multiple sealing materials and sound absorbing materials to the inner wall of the tire. The conventional processing method of this low noise (silent) tire is to attach these sound absorbing material layers after the tire is completely formed. This processing method results in extremely low processing efficiency and high production cost of the tire. Therefore, it is necessary to improve this processing method to improve processing efficiency and reduce production cost. SUMMARY

[0004] To overcome the problem that the diameter of the tire forming drum cannot be adjusted, the present application designs a forming drum capable of quickly adjusting diameter. The forming drum can realize the back and forth switching of different radial diameters and different drum pads by adjusting the assembly and replacing the drum pad. The forming drum can conveniently switch between different radial diameters and different drum pads, greatly improving the use efficiency of the forming drum, having high practicability, expanding the use range of the forming drum, reducing the manufacturing cost of the tire, improving the production benefit, and cooperating with the tire sealing member forming mechanism to perform sound absorbing processing on the tire blank, making a tire blank with a sound absorbing structure. Further forming processing of the tire blank can form a sound absorbing tire.

[0005] To achieve the above-mentioned purpose, the present application provides a forming drum capable of quickly adjusting diameter and the following technical solutions:

[0006] The molding drum with adjustable diameter rapidly comprises a main shaft, an expansion and contraction assembly which is sleeved on the main shaft and can move radially and axially, left and right guide discs which are arranged on the main shaft at both ends of the expansion and contraction assembly and can guide the radial movement of the expansion and contraction assembly, a stop ring which is arranged on the main shaft between the left guide disc and the expansion and contraction assembly, a push rod which is arranged in the main shaft and is used for driving the expansion and contraction assembly to move axially, a bolt which is fixedly connected to the inner side of the push rod, an adjusting assembly which is abutted at one end of the expansion and contraction assembly, and the adjusting assembly is arranged at one end of the main shaft.

[0007] Further, the expansion and contraction assembly comprises a small tile sliding seat which can move axially and is sleeved on the main shaft, a large tile sliding seat which is arranged on the small tile sliding seat and is pulled by the small tile sliding, N small tile supports which are connected by N groups of small tile connecting rods and are connected to the small tile sliding seat, two small tile drum tiles which are arranged at both ends of each small tile support and can be adjusted, N large tile supports which are connected by N groups of large tile connecting rods and are connected to the large tile sliding seat, and two large tile drum tiles which are arranged at both ends of each large tile support and can be adjusted, a small width adjusting ring which is arranged between the two small tile drum tiles, and a large width adjusting ring which is arranged between the two large tile drum tiles.

[0008] Further, left and right guide grooves are arranged at both ends of the small tile support and the large tile support, a right guide rod which is arranged in the right guide groove and can move radially, the right guide rod is fixedly connected to the right guide disc, a left guide rod which is arranged in the left guide groove and can move radially, the left guide rod is fixedly connected to the left guide disc, and a round nut which is arranged on one side of the left guide disc and is arranged on the main shaft.

[0009] Further, a pressing spring is arranged between the small tile sliding seat and the large tile sliding seat, a push ring which is fixedly connected to one end of the small tile sliding seat, a contraction limiting ring which is fixedly connected to the other end of the small tile sliding seat, a plurality of spring holes which are arranged at one end of the large tile sliding seat and are arranged in the pressing spring, and a push groove which is arranged at the other end of the large tile sliding seat and can accommodate the push ring on one side.

[0010] Further, the small tile drum tile and the small width adjusting ring and the large tile drum tile and the large width adjusting ring are arranged alternately in a ring shape, the small tile drum tile and the small width adjusting ring each have two outer contact parts which are collected towards the radial outside, the large tile drum tile and the large width adjusting ring each have two inner contact parts which are collected towards the radial inside, the small tile drum tile and the large tile drum tile each have a T-shaped guide groove, the small width adjusting ring and the large width adjusting ring each have a rectangular guide groove, the small width adjusting ring and the large width adjusting ring each have two small positioning grooves and two large positioning grooves which are arranged on both sides of the rectangular guide groove, the small tile support and the large tile support each have a guide strip which can be accommodated in the T-shaped guide groove and the rectangular guide groove, the small tile support and the large tile support each have two positioning strips which are arranged on both sides of the guide strip and are matched with the small positioning grooves and the large positioning grooves, and the small tile support and the large tile support each further have a T-shaped bolt which is used for locking the small tile drum tile and the large tile drum tile, and a nut which is matched with the T-shaped bolt.

[0011] Further, the adjusting assembly comprises a plurality of limiting rods in abutment with the big tile slide base, the plurality of limiting rods are fixedly connected with a limiting disc through the left guide disc, one side of the limiting disc is provided with an annular adjusting ring, and the position of the limiting disc on the main shaft can be adjusted through the adjusting ring.

[0012] Further, the main shaft is provided with a sliding groove, the push rod is fixedly connected with a T-shaped push block for driving the axial movement of the small tile slide base, and the T-shaped push block is fixedly connected with the small tile slide base through the sliding groove.

[0013] Further, the N groups of small tile connecting rods and big tile connecting rods are respectively provided with 6 groups, and the small tile connecting rods and the big tile connecting rods are of the same length, and the N small tile supports and the N big tile supports are respectively provided with 6 supports.

[0014] Further, one end of the main shaft is provided with a rear support for supporting.

[0015] Further, the present application also comprises a tire sealing element forming mechanism, the tire sealing element forming mechanism comprises a bottom plate, the bottom plate is provided with two sliding rails and a straight rack, the two sliding rails are slidingly connected with a left and right sliding base, the base is provided with a driving motor, one end of the rotating shaft of the driving motor is provided with a universal joint, one end of the rotating shaft of the universal joint is assembled with a walking gear, the walking gear is engaged with the straight rack, the base is fixedly connected with a forming ring at the upper end, the forming ring is provided with a first sliding groove and a second sliding groove at the upper end, the first sliding groove is provided with a sealing element forming assembly, and the second sliding groove is provided with a glue brushing assembly.

[0016] Further, the sealing element forming assembly comprises a first sliding plate which can slide on the first sliding groove, the first sliding plate is sleeved on the telescopic shaft of the first telescopic cylinder, one end of the telescopic shaft of the first telescopic cylinder is fixedly connected with a forming rod, one side of the outer wall of the forming rod is provided with a forming roller which can roll, one side of the first sliding plate is provided with a first translation linear module which can drive the first sliding plate to slide, and the first translation linear module is fixedly connected to one side of the forming ring through an L-shaped fixing plate.

[0017] Further, the forming roller is provided with a ring-shaped trapezoidal groove in the middle.

[0018] Further, the application also comprises a tire sealing piece forming mechanism, which comprises a bottom plate, two sliding rails and a straight rack are arranged on the bottom plate, the two sliding rails are slidingly connected with a base capable of sliding left and right, a driving motor is arranged in the base, a universal joint is arranged at one end of the rotating shaft of the driving motor, a walking gear is assembled at one end of the rotating shaft of the universal joint, the walking gear is engaged with the straight rack, a forming ring is fixedly connected to the upper end of the base, a first sliding groove and a second sliding groove are arranged on the upper end of the forming ring, a sealing piece forming assembly is arranged on the first sliding groove, and a glue brushing assembly is arranged on the second sliding groove, the sealing piece forming assembly comprises a first sliding plate capable of sliding on the first sliding groove, the first sliding plate is sleeved on the telescopic shaft of a first telescopic cylinder, a forming rod is fixedly connected to one end of the telescopic shaft of the first telescopic cylinder, a forming roller capable of rolling is arranged on one side of the outer wall of the forming rod, the forming roller is provided with an annular trapezoidal groove in the middle, a first translation linear module capable of driving the first sliding plate to slide is arranged on one side of the first sliding plate, and the first translation linear module is fixedly connected to one side of the forming ring through an L-shaped fixing plate, the glue brushing assembly comprises a second sliding plate capable of sliding on the second sliding groove, the second sliding plate is sleeved on the telescopic shaft of a second telescopic cylinder, a brush rod is fixedly connected to one end of the telescopic shaft of the second telescopic cylinder, a brush roller capable of rolling is arranged on one side of the outer wall of the brush rod, and a second translation linear module capable of driving the second sliding plate to slide is arranged on one side of the second sliding plate, and the second translation linear module is fixedly connected to one side of the forming ring through another L-shaped fixing plate.

[0019] A processing method of a tire blank with a sound-absorbing structure, using the above-mentioned forming drum capable of quickly adjusting the diameter, comprising the following steps:

[0020] 1) using a forming machine to prepare a tire blank and a sealing layer on one side surface of the tire blank, and then using a tire sealing piece forming mechanism to form a trapezoidal protrusion on the middle surface of the sealing layer;

[0021] 2) making the brush roller abut against the trapezoidal protrusion of the sealing layer, and then rotating the forming drum to make the trapezoidal protrusion of the tire blank roll with the brush roller,

[0022] 3) after brushing the glue, manually or by other equipment, pasting the sound-absorbing foam on the trapezoidal protrusion of the forming drum brushed with the glue,

[0023] 4) unloading the tire blank from the forming drum, and manually turning over the tire blank;

[0024] 5) combining the turned-over tire blank with a rubber functional layer to form a tire product.

[0025] The beneficial effects of the application are as follows:

[0026] 1. The present application can change the diameter without replacing the whole forming drum, quickly switch different forming diameters, reduce the time of replacing the forming drum, adjust conveniently and quickly, and position accurately and reliably by adjusting the radial diameter of the small shoe connecting rod and the large shoe connecting rod of the expansion assembly through the adjusting ring of the adjusting assembly.

[0027] 2. The length of the small shoe connecting rod and the large shoe connecting rod is the same, the radial travel of the small shoe drum and the large shoe drum is the same when the forming drum is inflated, and the tire is inflated synchronously, the radial travel of the small shoe drum and the large shoe drum is different when the forming drum is deflated, the small shoe drum is driven under the action of the compression spring, and then the large shoe drum is pulled by the small shoe drum, part of the rubber is separated from the small shoe drum first, and the other part of the rubber is separated from the large shoe drum, which is a relatively gentle separation method and will not cause damage to the tire embryo, which is beneficial to the molding and falling of the tire.

[0028] 3. The present application can solve the problem of selecting different drum surfaces for the same inch forming drum by loosening the T-shaped bolt to replace the small shoe drum and the large shoe drum, and can switch different drum surfaces by replacing different drum surfaces, improve the practicability of the forming drum, and cooperate with the adjusting effect of the width adjusting ring to realize the production of multiple tire specifications for the same forming drum, improve the use range of the forming drum, save the manufacturing cost, and greatly improve the production efficiency.

[0029] 4. The present application can further process the tire embryo by cooperating with the tire sealing member forming mechanism, replace the traditional noise reduction processing process after molding, further improve the production efficiency, and effectively reduce the noise in the vehicle during driving after processing. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the present application;

[0031] Figure 2 is another schematic diagram of the overall structure of the present application;

[0032] Figure 3 is a side view of the present application;

[0033] Figure 4 is a front view of the present application;

[0034] Figure 5 is a three-dimensional sectional view of the present application;

[0035] Figure 6 is a schematic diagram of the structure of the small shoe drum of the present application;

[0036] Figure 7 is a schematic diagram of the structure of the small width adjusting ring of the present application;

[0037] Figure 8 Structure diagram of the large drum shoe of the present application;

[0038] Figure 9 Structure diagram of the large drum shoe of the present application;

[0039] Figure 10 Structure diagram of the small drum shoe of the present application;

[0040] Figure 11 Structure diagram of the large drum shoe of the present application;

[0041] Figure 12 Structure diagram of the large drum shoe of the present application;

[0042] Figure 13 Side view of the tire sealant molding mechanism of the present application;

[0043] Figure 14 Structure diagram of the tire sealant molding mechanism of the present application;

[0044] Figure 15 Sectional view of the tire blank after processing by the molding roll;

[0045] Figure 16 Sectional view of the tire blank after final molding;

[0046] Figure 17 Structure diagram of the interior of the brush roll.

[0047] Wherein: the main shaft 1, the sliding groove 11, the push rod 2, the T-shaped push block 21, the bolt 3, the rear support 4, the expansion assembly 5, the small tile sliding seat 50, the small tile connecting rod 51, the small tile bracket 52, the small tile tile 53, the small width adjusting ring 54, the large tile sliding seat 55, the large tile connecting rod 56, the large tile bracket 57, the large tile tile 58, the large width adjusting ring 59, the small positioning groove 541, the pressing spring 551, the push ring 552, the spring hole 553, the push groove 554, the large positioning groove 591, the guide strip 5271, the T-shaped bolt 5272, the nut 5273, the positioning strip 5274, the outer contact part 5354, the T-shaped guide groove 5358, the rectangular guide groove 5459, the inner contact part 5859, the adjusting assembly 6, the limiting rod 61, the limiting disc 62, the adjusting ring 63, the left guide disc 7, the left guide rod 71, the left guide groove 72, the round nut 73, the right guide disc 8, the right guide rod 81, the right guide groove 82, the blocking ring 9, the contraction limiting ring 10, the bottom plate 1', the straight rack 2', the sliding rail 3', the base 4', the driving motor 5', the universal device 6', the walking gear 7', the forming ring 8', the first sliding groove 81', the first sliding plate 82', the second sliding groove 83', the second sliding plate 84', the sealing member forming assembly 9', the first telescopic cylinder 91', the forming rod 92', the forming roller 93', the tire tire blank 930, the sealing layer 932', the sound-absorbing foam 933', the first translation linear module 94', the glue brushing assembly 10', the second telescopic cylinder 101', the brush rod 102', the brush roller 103', the second translation linear module 104', the glue outlet shaft pipe 1031, the brush skeleton 1032, the brush soft package layer 1033, the bearing 1035, the pipeline 1036, and the sealing ring 1037. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below with reference to the accompanying drawings, wherein the same or similar components are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0049] The technical solutions of the present application are further illustrated below by specific embodiments in conjunction with the accompanying drawings.

[0050] As Figures 1-5As shown, the present application provides a forming drum with adjustable diameter, which comprises a main shaft 1 and an expansion assembly 5 sleeved on the main shaft 1 and capable of radial and axial movement, and left and right guide discs 7 and 8 provided on the main shaft 1 at both ends of the expansion assembly 5 and capable of guiding the radial movement of the expansion assembly 5, wherein the expansion assembly 5 comprises a small tile sliding seat 50 sleeved on the main shaft 1 and capable of axial movement, a push rod 2 provided in the main shaft 1 and used for the axial movement of the small tile sliding seat 50, and a bolt 3 fixedly connected to the inner side of the push rod 2, the push rod 2 and the bolt 3 being axially moved as a whole, the bolt 3 being connected with an external driving mechanism (generally a cylinder), specifically, a sliding groove 11 is formed in the main shaft 1, a T-shaped push block 21 for driving the axial movement of the small tile sliding seat 50 is fixedly connected to the push rod 2, and the T-shaped push block 21 is fixedly connected to the small tile sliding seat 50 through the sliding groove 11, the bolt 3 is driven by the external driving mechanism to drive the axial movement of the push rod 2, the push rod 2 is axially moved in the sliding groove 11 through the T-shaped push block 21, and the T-shaped push block 21 drives the axial movement of the small tile sliding seat 50.

[0051] A stop ring 9 is arranged on the main shaft 1 between the left guide disc 7 and the small tile sliding seat 50, and a contraction limiting ring 10 is fixedly connected to one end of the small tile sliding seat 50 relative to the stop ring 9, wherein the stop ring 9 can limit the continuous movement of the expansion drum when the expansion drum is expanded to the maximum, so as to avoid the overtravel of the axial movement of the expansion drum, and the contraction limiting ring 10 can limit the continuous movement of the contraction drum when the contraction drum is contracted to the minimum, so as to avoid the overtravel of the axial movement of the contraction drum.

[0052] As shown in the figure, Figures 10-12 A pressing spring 551 is arranged between the small tile sliding seat 50 and a large tile sliding seat 55, a push ring 552 is fixedly connected to one end of the small tile sliding seat 50, the large tile sliding seat 55 is provided with eight spring holes 553 for containing the pressing spring 551 at one end, and the large tile sliding seat 55 is provided with a push groove 554 at the other end for containing and larger than the side of the push ring 552 pressed by the pressing spring 551, wherein the pressing spring 551 can keep a certain distance between the small tile sliding seat 50 and the large tile sliding seat 55 in the state of the contraction drum, and has a buffering effect, the push groove 554 can make the small tile sliding seat 50 move axially first under the action of the pressing spring 551 when the contraction drum is contracted, and the small tile sliding seat 50 drives the push ring 552 to move axially, and then the large tile sliding seat 55 abuts against the push ring 552 to make the large tile sliding seat 55 move axially, which is beneficial to the stable falling of the tire.

[0053] As shown in the figure, Figures 5-9As shown, the small tile sliding seat 50 is provided with a large tile sliding seat 55 pulled by small tile sliding, the small tile sliding seat 50 is driven and connected with six small tile supports 52 through six groups of small tile connecting rods 51, each small tile support 52 is provided with two adjustable small tile tiles 53 at both ends, the large tile sliding seat 55 is driven and connected with six large tile supports 57 through six groups of large tile connecting rods 56, each large tile support 57 is provided with two adjustable large tile tiles 58 at both ends, one small width adjusting ring 54 is further arranged between the two small tile tiles 53, and one large width adjusting ring 59 is further arranged between the two large tile tiles 58, wherein each group of small tile connecting rods 51 and large tile connecting rods 56 has two small tile connecting rods 51 and large tile connecting rods 56 respectively, and the small tile connecting rods 51 and the large tile connecting rods 56 have the same length.

[0054] Specifically, the small tile tiles 53 and the small width adjusting ring 54 and the large tile tiles 58 and the large width adjusting ring 59 are alternately arranged in a ring shape, and the small tile tiles 53 and the small width adjusting ring 54 are both provided with two outer contact parts 5354 which are collected towards the radial outside, and the large tile tiles 58 and the large width adjusting ring 59 are both provided with two inner contact parts 5859 which are collected towards the radial inside, in the expanded state, the outer contact parts 5354 and the inner contact parts 5859 are tightly combined, the gap between the outer contact parts 5354 and the inner contact parts 5859 is almost none, which can avoid the tire forming to produce indentation on the tire, reduce the error of tire forming, improve the tire forming quality, in the contracted state, the outer contact parts 5354 and the inner contact parts 5859 are separated and not in contact, the small tile tiles 53 and the large tile tiles 58 are both provided with T-shaped guide grooves 5358, the small width adjusting ring 54 and the large width adjusting ring 59 are both provided with rectangular guide grooves 5459, the small width adjusting ring 54 and the large width adjusting ring 59 are both provided with two small positioning grooves 541 and two large positioning grooves 591 on both sides of the rectangular guide grooves 5459, the small tile supports 52 and the large tile supports 57 are both provided with guide bars 5271 which can be placed in the T-shaped guide grooves 5358 and the rectangular guide grooves 5459, the small tile supports 52 and the large tile supports 57 are both provided with two positioning bars 5274 on both sides of the guide bars 5271, which cooperate with the small positioning grooves 541 and the large positioning grooves 591, the small tile supports 52 and the large tile supports 57 are both provided with T-shaped bolts 5272 for locking the small tile tiles 53 and the large tile tiles 58, and nuts 5273 cooperating with the T-shaped bolts 5272, by replacing the small width adjusting ring 54 and the large width adjusting ring 59, and replacing the small tile tiles 53 and the large tile tiles 58 cooperating with the T-shaped bolts 5272, the replacement of different width specifications of the tire is realized.

[0055] Specifically, the large tile slide 55 abuts one end of the adjusting assembly 6, and the adjusting assembly 6 is arranged at one end of the main shaft 1. The adjusting assembly 6 includes four limiting rods 61 abutting the large tile slide 55, the four limiting rods 61 are fixedly connected to a limiting disc 62 through the left guide disc 7, one side of the limiting disc 62 is provided with an annular adjusting ring 63, and the position of the limiting disc 62 on the main shaft 1 can be adjusted by screwing the adjusting ring 63 (threaded connection), so that the position of the limiting rod 61 abutting the large tile slide 55 is adjusted, the angle of the large tile connecting rod 56 and the small tile connecting rod 51 changes when the drum is inflated, so that the radial diameter of the small tile connecting rod 51 and the large tile connecting rod 56 is changed by adjusting the adjusting ring 63, the adjustment is quick, and the positioning is accurate and reliable.

[0056] In order to enable the small tile drum 53 and the large tile drum 58 to move radially when moving axially, so as to achieve the purpose of drum contraction and expansion, left guide grooves 72 and right guide grooves 82 are formed at both ends of the small tile bracket 52 and the large tile bracket 57, the right guide grooves 82 are provided with right guide rods 81 capable of moving radially, the right guide rods 81 are fixedly connected to the right guide disc 8, the left guide grooves 72 are provided with left guide rods 71 capable of moving radially, the left guide rods 71 are fixedly connected to the left guide disc 7, and a circular nut 73 is further arranged on one side of the left guide disc 7 on the main shaft 1. In order to fix the position of the left guide disc 7, so as to prevent deviation and change of direction when the drum is inflated and deflated, and to stabilize the work.

[0057] In order to have stable supporting force for the forming drum during work, a rear support 4 for supporting is arranged at one end of the main shaft 1, the rear support 4 has a supporting effect on the forming drum, and can ensure that the forming drum installed on the forming machine rotates coaxially with the main shaft 1 of the forming machine.

[0058] When moving axially, the stroke of the small tile slide 50 and the large tile slide 55 is the same, but the angle of the small tile connecting rod 51 is greater than that of the large tile connecting rod 56, so the radial movement stroke of the small tile drum 53 is greater than that of the large tile drum 58;

[0059] As a further embodiment of the present application, the present application also includes a tire sealant forming mechanism, the tire sealant forming mechanism includes a base plate 1', the base plate 1' is provided with a linear rack 2', and two slide rails 3' are provided on both sides of the linear rack 2' on the base plate 1', the two slide rails 3' are slidably connected with a left and right slidable base 4', the base 4' is in the shape of Π, and a driving motor 5' is installed in the Π-shaped base 4', one end of the rotating shaft of the driving motor 5' engages one end of the rotating shaft of a universal joint 6', the other end of the rotating shaft of the universal joint 6' is assembled with a walking gear 7', the walking gear 7' engages with the linear rack 2', a forming ring 8' is fixedly connected to the upper end of the base 4', a first sliding groove 81' is formed on one side of the upper end of the forming ring 8', a second sliding groove 83' is formed on the side opposite to the first sliding groove 81' on the upper end of the forming ring 8', a sealant forming assembly 9' is arranged on the first sliding groove 81', and a glue brushing assembly 10' is arranged on the second sliding groove 83', wherein the universal joint 6' can be any one of a universal joint or a universal coupling.

[0060] Further, the sealant forming assembly 9' includes a first sliding plate 82' that can slide on the first sliding groove 81', the first sliding plate 82' is sleeved on the telescopic shaft of a first telescopic cylinder 91', one end of the telescopic shaft of the first telescopic cylinder 91' is fixedly connected with a forming rod 92', a forming roller 93' that can roll is arranged on one side of the outer wall of the forming rod 92', the forming roller 93' has a ring-shaped trapezoidal groove 931' in the middle, a first translation linear module 94' that can drive the first sliding plate 82' to slide is arranged on one side of the first sliding plate 82', the first translation linear module 94' is fixedly connected to one side of the forming ring 8' through an L-shaped fixed plate, and the first sliding plate 82' is translated left and right through the first translation linear module 94'.

[0061] Further, the glue brushing assembly 10' includes a second sliding plate 84' that can slide on the second sliding groove 83', the second sliding plate 84' is sleeved on the telescopic shaft of a second telescopic cylinder 101', one end of the telescopic shaft of the second telescopic cylinder 101' is fixedly connected with a brush rod 102', a brush roller 103' that can roll is arranged on one side of the outer wall of the brush rod 102', a second translation linear module 104' that can drive the second sliding plate 84' to slide is arranged on one side of the second sliding plate 84', the second translation linear module 104' is fixedly connected to the forming ring 8' through another L-shaped fixed plate, and is located on the side opposite to the first translation linear module 94', and the second sliding plate 84' is translated left and right through the second translation linear module 104'.

[0062] The structure of the brush roller 103' is as follows Figure 17As shown, the brush roller 103' is installed on the glue outlet shaft tube 1031 at the bottom end of the brush rod 102', one end of the glue outlet shaft tube 1031 is connected with a pipeline 1036 (supplying glue), the glue outlet shaft tube 1031 is provided with a brush skeleton 1032 through a bearing 1035, the brush skeleton 1032 is attached with a brush soft cladding layer 1033 on the outside, the glue outlet shaft tube 1031 has a hollow cavity and is provided with glue outlet holes on the outer wall, the brush skeleton 1032 is provided with glue permeable holes opposite to the glue outlet holes, during the process of brushing glue on the sealing layer, the glue flows into the glue outlet shaft tube 1031 through the pipeline 1036, then flows into the brush soft cladding layer 1033 (which can be sponge or any material capable of storing glue) through the glue outlet holes on the surface of the glue outlet shaft tube 1031 and the glue permeable holes of the brush skeleton 1032, in order to prevent the glue from flowing out from both ends, a closing ring 1037 is further provided on the glue outlet shaft tube 1031, during the process of brushing glue, the brush roller 103' always contains glue.

[0063] Working principle: when the forming drum is inflated, the push rod 2 moves axially to the left under the action of the main shaft 1 of the forming machine, at this time, the small tile slide 50 moves axially to the left under the action of the push rod 2 and the T-shaped push block 21, the small tile slide 50 presses against the large tile slide 55 and moves axially to the left, when the large tile slide 55 contacts the limiting rod 61, the large tile slide 55 stops moving, at this time, the compression spring 551 between the small tile slide 50 and the large tile slide 55 starts to compress; when the small tile slide 50 moves to contact the large tile slide 55, the small tile slide 50 stops moving, that is, the large tile slide 55 and the small tile slide 50 are in the inflated pre-position, the large tile drum tile 58 and the small tile drum tile 53 are on the same circular arc, at this time, a series of tire blank production processes such as glue bonding, ring buckling, and rolling can be carried out;

[0064] When the tire blank 930 and the sealing layer 932' on one side of the tire blank 930 are formed by the forming machine, a structure as shown in Figure 15 is obtained, then the tire sealing member forming mechanism starts to work, the walking gear 7' is driven by the driving motor 5' to translate on the linear rack 2' to left and right, the forming ring 8' is translated to the tire blank, then the first translation linear module 94' translates the first sliding plate 82' to left and right to accurately position the forming roller 93' in the middle of the tire blank, then the first telescopic cylinder 91' drives the forming rod 92' to move downward to press the forming roller 93' against the tire blank, the forming drum rotates to make the tire blank and the forming roller 93' roll and form by pressing, after pressing and forming, a tire as shown in Figure 15The surface of the sealing layer 932' shown in the middle of a trapezoidal convex part, then, the first sliding plate 82' is reset by the first translation linear module 94', and the second translation linear module 104' performs left-right translation on the second sliding plate 84', so that the brush roller 103' is accurately positioned in the middle of the sealing layer 932', and then the second telescopic cylinder 101' drives the brush rod 102' to move downward, so that the brush roller 103' presses against the trapezoidal convex part of the sealing layer 932', the forming drum rotates, and the trapezoidal convex part of the tire blank rolls with the brush roller 103' to brush glue. After brushing glue, the noise reduction foam 933' is attached to the trapezoidal convex part of the forming drum by manual or other equipment; the cross section of the tire blank with a noise reduction structure prepared is as shown in Figure 16 The structure shown is prior art, and the noise reduction working principle is not described here.

[0065] When the above process is completed and needs to be unloaded, the tire unloading action starts at this time. When the forming drum contracts, the push rod 2 moves axially to the right under the action of the main shaft 1 of the building machine. At this time, the small shoe slide 50 moves axially to the right under the action of the push rod 2 and the T-shaped push block 21. The large shoe slide 55 and the small shoe slide 50 are initially moved by the action of the compression spring 551, so that the small shoe slide 50 moves, and the large shoe slide 55 does not move axially. After the small shoe slide 50 moves to a certain stroke, the push ring 24 on the small shoe slide 50 contacts the large shoe slide 55. At this time, the small shoe slide 50 moves while driving the large shoe slide 55 to move axially, and the corresponding small shoe drum shoe 53 and large shoe drum shoe 58 also move radially at the same time. Because the angle of the small shoe connecting rod 51 is greater than that of the large shoe connecting rod 56, the radial stroke of the small shoe drum shoe 53 is greater than that of the large shoe drum shoe 58 during the same movement period, so that the overall contraction action is realized. After contraction to the preset position, the contraction diameter is reached. At this time, the tire blank is smoothly unloaded on the forming drum, the tire blank forming process in this section is completed, and the finally unloaded tire blank is turned over by manual operation, finally forming a special tire blank that can reduce noise (middle piece, which needs to be compounded with other rubber functional layers to form a tire finished product) as shown in Figure 16 It is noted that the above-mentioned noise reduction foam 933' is a high-temperature-resistant fireproof cotton (porous noise reduction cotton) that has the function of absorbing sound and can resist high temperature generated during high-speed rotation of the tire.

[0066] It is noted that the above-mentioned noise reduction foam 933' is a high-temperature-resistant fireproof cotton (porous noise reduction cotton) that has the function of absorbing sound and can resist high temperature generated during high-speed rotation of the tire.

[0067] Obviously, the above embodiments of the present application are merely example for clearly explaining the present application, and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A forming drum capable of rapid diameter adjustment, characterized by, The utility model provides a radial and axial movement expansion and contraction assembly, and the left and right guide discs are arranged on the main shaft and can guide the radial movement of the expansion and contraction assembly, the stop ring is arranged on the main shaft between the left guide disc and the expansion and contraction assembly, the push rod is arranged in the main shaft and is used for driving the axial movement of the expansion and contraction assembly, the bolt is fixedly connected to the inner side of the push rod, the adjusting assembly is arranged at one end of the expansion and contraction assembly, and the adjusting assembly is arranged at one end of the main shaft. The tire sealing element forming mechanism comprises a bottom plate, two sliding rails and a linear rack are arranged on the bottom plate, the two sliding rails are slidably connected with a left-right sliding base, a driving motor is arranged in the base, a universal joint is arranged at one end of the rotating shaft of the driving motor, a walking gear is arranged at one end of the rotating shaft of the universal joint, the walking gear is engaged with the linear rack, a forming ring is fixedly connected to the upper end of the base, a first sliding groove and a second sliding groove are arranged on the upper end of the forming ring, a sealing element forming assembly is arranged on the first sliding groove, and a glue brushing assembly is arranged on the second sliding groove. The sealing element forming assembly comprises a first sliding plate slidably arranged on the first sliding groove, the first sliding plate is sleeved on the telescopic shaft of a first telescopic cylinder, a forming rod is fixedly connected to one end of the telescopic shaft of the first telescopic cylinder, a forming roller is arranged on one side of the outer wall of the forming rod and can roll, the forming roller has an annular trapezoidal groove in the middle, a first translational linear module is arranged on one side of the first sliding plate and can drive the first sliding plate to slide, and the first translational linear module is fixedly connected to one side of the forming ring through an L-shaped fixing plate. The glue brushing assembly comprises a second sliding plate slidably arranged on the second sliding groove, the second sliding plate is sleeved on the telescopic shaft of a second telescopic cylinder, a brush rod is fixedly connected to one end of the telescopic shaft of the second telescopic cylinder, a brush roller is arranged on one side of the outer wall of the brush rod and can roll, a second translational linear module is arranged on one side of the second sliding plate and can drive the second sliding plate to slide, and the second translational linear module is fixedly connected to one side of the forming ring through another L-shaped fixing plate.

2. The diameter-adjustable forming drum according to claim 1, wherein The expansion and contraction assembly comprises a small tile sliding seat axially movably sleeved on the main shaft, the small tile sliding seat is provided with a large tile sliding seat slidably pulled by the small tile, the small tile sliding seat is drivingly connected with N small tile supports through N groups of small tile connecting rods, each small tile support is provided with two adjustable small tile tiles at both ends, the large tile sliding seat is drivingly connected with N large tile supports through N groups of large tile connecting rods, each large tile support is provided with two adjustable large tile tiles at both ends, a small width adjusting ring is further arranged between the two small tile tiles, and a large width adjusting ring is further arranged between the two large tile tiles.

3. A forming drum of the type capable of rapid diameter adjustment as defined in claim 2, wherein, The left and right guide grooves are arranged on both ends of the small tile support and the large tile support, the right guide rod is arranged in the right guide groove and can move radially, the right guide rod is fixedly connected to the right guide disc, the left guide rod is arranged in the left guide groove and can move radially, the left guide rod is fixedly connected to the left guide disc, and the round nut is further arranged on one side of the left guide disc.

4. The diameter quickly adjustable forming drum according to claim 2, wherein, The small tile sliding seat is provided with a pressing spring between the small tile sliding seat and the large tile sliding seat, one end of the small tile sliding seat is fixedly connected with a pushing ring, the other end of the small tile sliding seat is fixedly connected with a contraction limiting ring, a plurality of spring holes for containing the pressing spring are formed in one end of the large tile sliding seat, and a pushing groove for containing and larger than one side of the pushing ring is formed in the other end of the large tile sliding seat.

5. The diameter quickly adjustable forming drum of claim 2, wherein, The small tile drum tile and the small width adjusting ring are alternately arranged with the large tile drum tile and the large width adjusting ring in a ring shape, the small tile drum tile and the small width adjusting ring are each provided with two outer contact parts which are collected towards the radial outside, the large tile drum tile and the large width adjusting ring are each provided with two inner contact parts which are collected towards the radial inside, the small tile drum tile and the large tile drum tile are each provided with a T-shaped guide groove, the small width adjusting ring and the large width adjusting ring are each provided with a rectangular guide groove, the small width adjusting ring and the large width adjusting ring are each provided with two small positioning grooves and two large positioning grooves on the two sides of the rectangular guide groove, the small tile support and the large tile support are each provided with a guide strip which can be contained in the T-shaped guide groove and the rectangular guide groove, the small tile support and the large tile support are each provided with two positioning strips on the two sides of the guide strip, the small tile support and the large tile support are each further provided with a T-shaped bolt for locking the small tile drum tile and the large tile drum tile, and a nut matched with the T-shaped bolt.

6. The diameter quickly adjustable forming drum according to claim 2, wherein, The adjusting assembly comprises a plurality of limiting rods abutting against the large tile sliding seat, the plurality of limiting rods are fixedly connected with a limiting disc through the left guide disc, and the limiting disc is provided with an annular adjusting ring on one side.

7. The diameter quickly adjustable forming drum of claim 2, wherein, The main shaft is provided with a sliding groove, the push rod is fixedly connected with a T-shaped push block for driving the small tile sliding seat to move axially, and the T-shaped push block is fixedly connected with the small tile sliding seat through the sliding groove.

8. The diameter quickly adjustable forming drum of claim 2, wherein, The N groups of small tile connecting rods and large tile connecting rods are respectively provided with 6 groups, and the small tile connecting rods and the large tile connecting rods are of the same length, and the N small tile supports and the N large tile supports are respectively provided with 6 supports.

9. The rapidly adjustable diameter forming drum of claim 1, wherein, One end of the main shaft is provided with a rear support for supporting.

10. A method for processing a tyre building drum with a sound absorbing structure, using a forming drum with a quick adjustable diameter according to any one of claims 1-9, characterised in that, The method comprises the following steps: 1) using a molding machine to prepare a tire blank and a sealing layer on one side surface of the tire blank, and then using a tire sealing member molding mechanism to form a trapezoidal protrusion on the middle surface of the sealing layer; 2) pressing the trapezoidal protrusion of the sealing layer with a brush roller, and then rotating the molding drum to make the trapezoidal protrusion of the tire blank roll with the brush roller, 3) after brushing, the noise reduction foam is attached to the trapezoidal protrusion of the molding drum by manual or other equipment, 4) the tire blank is removed from the molding drum and turned over by hand; 5) the turned-over tire blank is combined with a rubber functional layer to form a tire product.

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