Belt drum and belt drum diameter adjustment method

Abstract

The present invention provides a belt drum and a belt drum diameter adjustment method. The belt drum includes: a main shaft; a drum plate assembly; a guide rail assembly, the guide rail assembly has an outer bevel, and the drum plate assembly has an inner bevel; a first drive assembly, the first drive assembly includes a piston cylinder that is movably arranged, the piston cylinder is connected to the guide rail assembly, and the two move synchronously; a second drive assembly, the second drive assembly includes a piston, and the piston is axially movably arranged in the piston cylinder; when the first drive assembly is actuated, the piston remains stationary, the piston cylinder moves, the piston cylinder drives the guide rail assembly to move, the outer bevel squeezes the inner bevel to increase the diameter of the drum plate assembly; when the second drive assembly is actuated, the pressure is maintained in the cavity of the piston cylinder, the piston moves, and drives the piston cylinder to move synchronously, the piston cylinder drives the guide rail assembly to move, the outer bevel squeezes the inner bevel to increase the diameter of the drum plate assembly. The present invention solves the problem of low working efficiency of the belt drum in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of tire processing, in particular to a belt drum and a belt drum diameter adjustment method. Background Art

[0002] The belt drum is the core component of the all-steel and off-highway forming machine. Its working process includes automatic lamination of fixed-length rubber, rolling joints, and de-treading after drum shrinkage. The specific process is as follows: 1. When laminating the rubber, the magnet on the drum tile provides adsorption force and the forming machine provides power to rotate the forming drum to laminarize the rubber, and the joint is rolled firmly. 2. Automatically laminating 2#, 3#, and 4# belt layers in sequence, and rolling the joint firmly. 3. The tread clamp of the forming machine transfer ring extends radially to clamp the B&T composite. 4. The belt laminating drum shrinks to the minimum diameter, and the B&T composite is transferred to the transfer ring. 5. By superimposing drum tiles on the drum tiles, different inch-level diameter adjustments can be achieved. After the above processes, a stable belt layer and tread can be provided for the mechanical forming drum, realizing a one-drum multi-inch-level mechanical device.

[0003] The existing belt drum is usually equipped with a connecting rod structure, which is driven by the main shaft and the cylinder piston structure. The connecting rod structure drives the drum plate to move radially to increase and decrease the diameter. This setting method only uses the connecting rod slider mechanism to achieve the expansion and contraction of the diameter, which is greatly affected by the connecting rod angle. It needs to be shrunk to the minimum diameter each time, which affects the work efficiency. In addition, the dynamic force of the connecting rod structure is uneven, which affects the service life. In some technical solutions, a limited guide mechanism is set to guide and limit the adjustment range of the cylinder piston structure. The limited guide mechanism of this setting method extends outward for a long time, occupies too much space, and is not conducive to the layout of the molding machine. Summary of the invention

[0004] The main purpose of the present invention is to provide a belt drum and a belt drum diameter adjustment method to solve the problem of low working efficiency of the belt drum in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a belt layer drum, comprising: a main shaft; a drum plate assembly, which is circumferentially arranged on the outside of the main shaft and can move radially along the main shaft; a guide rail assembly, which is axially movably arranged between the drum plate assembly and the main shaft, the guide rail assembly has an outer bevel, and the drum plate assembly has an inner bevel, and the outer bevel and the inner bevel are pressed together to drive the drum plate assembly to move radially; a first drive assembly, which comprises a movably arranged piston cylinder, the piston cylinder is connected to the guide rail assembly, and the two move synchronously; a second drive assembly, which comprises a piston, and the piston is axially movably arranged in the piston cylinder; when the first drive assembly is actuated, the piston remains stationary, the piston cylinder moves, the piston cylinder drives the guide rail assembly to move, the outer bevel squeezes the inner bevel to increase the diameter of the drum plate assembly; when the second drive assembly is actuated, the pressure is maintained in the cavity of the piston cylinder, the piston moves, and drives the piston cylinder to move synchronously, the piston cylinder drives the guide rail assembly to move, the outer bevel squeezes the inner bevel to increase the diameter of the drum plate assembly.

[0006] Further, the range in which the second driving assembly drives the drum plate assembly to change the diameter is greater than the range in which the first driving assembly drives the drum plate assembly to change the diameter.

[0007] Furthermore, the first drive assembly also includes: a pneumatic joint, which is connected to the piston cylinder and communicated with the cavity of the piston cylinder to apply pressure to the cavity of the piston cylinder; a cone disk, which is connected to the piston cylinder and moves synchronously, and the side of the cone disk away from the piston cylinder is conical, and the cone surface is connected to the guide rail assembly.

[0008] Furthermore, the second drive component also includes: a sleeve, which is axially movably arranged on the outside of the main shaft, the sleeve is connected to the piston, and the two move synchronously; a screw-nut assembly, the screw-nut assembly includes a screw and a nut, the screw is passed through the main shaft, the nut is sleeved on the screw and cooperates with the screw thread, the nut is connected to the sleeve and moves synchronously, and the screw drives the sleeve and the piston to move axially through the nut.

[0009] Furthermore, the second drive assembly also includes: a handwheel, which moves on the outside of the belt layer drum, one end of the screw extends out of the main shaft, and the handwheel is arranged at the end of the screw extending out of the main shaft; a transmission assembly, the handwheel is connected to the screw drive through the transmission assembly, and drives the screw to rotate.

[0010] Furthermore, the main shaft is provided with an inner cavity, the lead screw is passed through the inner cavity, the nut is arranged in the inner cavity, the side wall of the inner cavity is provided with an avoidance hole, the connecting piece is passed through the avoidance hole and is connected with the nut and the sleeve so that the nut and the sleeve move synchronously.

[0011] Further, the belt drum further comprises an indicator, which is arranged on the outer surface of the belt drum and can display the diameter of the belt drum.

[0012] Furthermore, the belt drum further comprises a wall panel, which is arranged on the end surface of the belt drum and shields components inside the belt drum, and the indicator is arranged on the outer side surface of the wall panel.

[0013] Furthermore, the drum plate assembly includes: a plurality of drum plates, each of which is connected in sequence to form a cylindrical structure; a plurality of support blocks, which are arranged on the inner side of the drum plates and connected to the drum plates, and the side of the support blocks away from the drum plates has an inner slope.

[0014] According to another aspect of the present invention, a belt drum diameter adjustment method is provided, which adopts the above-mentioned belt drum, and the belt drum diameter adjustment method comprises: step S1: the second drive assembly of the belt drum is actuated, and the pressure is maintained in the cavity of the piston cylinder of the first drive assembly of the belt drum, the piston of the second drive assembly moves, and drives the piston cylinder to move synchronously, the piston cylinder drives the guide rail assembly of the belt drum to move, the outer inclined surface of the guide rail assembly squeezes the inner inclined surface of the drum plate assembly of the belt drum, and the diameter of the drum plate assembly increases to a rough size; step S2: the first drive assembly is actuated, and the piston remains stationary, the piston cylinder moves, and the piston cylinder drives the guide rail assembly The assembly moves, the outer bevel squeezes the inner bevel, and the diameter of the drum plate assembly increases to the precise size; step S3: the main shaft rotates, the rubber of each belt layer is adhered and the joint is rolled firmly; step S4: the first drive assembly is actuated, and the piston remains stationary, the piston cylinder moves in the opposite direction, the piston cylinder drives the guide rail assembly to move in the opposite direction, the guide rail assembly drives the drum plate assembly to move, and the diameter of the drum plate assembly is reduced to a rough size; step S5: the processed tire is unloaded and the next tire is processed. If the tires of the same size and specification are to be produced, steps S2 to S5 are repeated. If the tires of different sizes and specifications are to be produced, steps S1 to S5 are repeated.

[0015] Furthermore, when the second drive assembly is activated, the handwheel rotates, and the handwheel drives the lead screw to rotate through the transmission assembly, the lead screw drives the nut to move axially, the nut drives the sleeve and the piston to move synchronously, the piston drives the piston cylinder and the guide rail assembly to move, and the outer inclined surface of the guide rail assembly squeezes the inner inclined surface of the drum plate assembly to increase the diameter of the drum plate assembly.

[0016] Furthermore, when the first driving assembly is activated, the pneumatic joint passes gas into the cavity of the piston cylinder to apply pressure, driving the piston cylinder, cone disk and guide rail assembly to move axially, and the outer inclined surface drives the inner inclined surface to increase or decrease the diameter of the drum plate assembly.

[0017] By applying the technical solution of the present invention, a first driving assembly and a second driving assembly are provided, and both the first driving assembly and the second driving assembly can drive the radial movement of the drum plate assembly through the guide rail assembly. The difference between the two is that the first driving assembly and the second driving assembly control the radial expansion and contraction range of the drum plate assembly in different ranges. In this way, when processing is performed, the diameter of the belt layer drum can be roughly adjusted over a large range through the second driving assembly. Specifically, the driving piston moves in the piston cylinder. Since the pressure in the piston cylinder is maintained, the movement of the piston will drive the piston cylinder to move together, thereby driving the guide rail assembly to move axially, and the outer inclined surface squeezes the inner inclined surface, so that the diameter of the drum plate assembly increases; and then the belt is adjusted by the first driving assembly The diameter of the layer drum is fine-tuned in a small range. Specifically, the piston cylinder is driven to move as a whole, and the movement of the piston cylinder drives the guide rail assembly to move, so that the outer bevel squeezes the inner bevel, thereby increasing the diameter of the drum plate assembly. In this way, when producing tires of the same size and specification during processing, there is no need to adjust the minimum diameter to the required diameter multiple times. Only small-range fine-tuning is required, that is, only the first drive assembly needs to be actuated, and the second drive assembly does not need to be actuated, thereby greatly shortening the time spent on adjusting the diameter and improving processing efficiency. In addition, compared with the previous large-scale adjustment method, the diameter of the drum can be partially adjusted, thereby ensuring the diameter accuracy, improving the production efficiency of the belt layer drum, and ensuring the product quality of the finished tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic structural diagram of the belt drum of the present invention is shown;

[0020] Figure 2 Shows Figure 1 Side view of.

[0021] The above drawings include the following reference numerals:

[0022] 10. Spindle; 20. Drum plate assembly; 21. Drum plate; 22. Support block; 30. Guide rail assembly; 41. Piston cylinder; 42. Pneumatic joint; 43. Cone disk; 51. Piston; 52. Sleeve; 53. Lead screw; 54. Nut; 55. Handwheel; 56. Transmission assembly; 60. Indicator; 70. Wall panel; 80. Main box. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0026] In order to solve the problem of low working efficiency of a belt drum in the prior art, the present invention provides a belt drum and a belt drum diameter adjustment method.

[0027] like Figure 1 and Figure 2 The belt drum shown in the figure comprises a main shaft 10, a drum plate assembly 20, a guide rail assembly 30, a first drive assembly and a second drive assembly. The drum plate assembly 20 is circumferentially arranged on the outside of the main shaft 10 and can move radially along the main shaft 10. The guide rail assembly 30 is axially movably arranged between the drum plate assembly 20 and the main shaft 10. The guide rail assembly 30 has an outer bevel, and the drum plate assembly 20 has an inner bevel. The outer bevel and the inner bevel are pressed together to drive the drum plate assembly 20 to move radially. The first drive assembly comprises a movably arranged piston cylinder 41, which is connected to the guide rail assembly 30. , and the two move synchronously; the second driving assembly includes a piston 51, and the piston 51 is axially movable in the piston cylinder 41; when the first driving assembly is actuated, the piston 51 remains stationary, the piston cylinder 41 moves, the piston cylinder 41 drives the guide rail assembly 30 to move, and the outer inclined surface squeezes the inner inclined surface to increase the diameter of the drum plate assembly 20; when the second driving assembly is actuated, the pressure is maintained in the cavity of the piston cylinder 41, the piston 51 moves, and drives the piston cylinder 41 to move synchronously, the piston cylinder 41 drives the guide rail assembly 30 to move, and the outer inclined surface squeezes the inner inclined surface to increase the diameter of the drum plate assembly 20.

[0028] In this embodiment, a first drive assembly and a second drive assembly are provided. Both the first drive assembly and the second drive assembly can drive the drum plate assembly 20 to move radially through the guide rail assembly 30. The difference between the two is that the first drive assembly and the second drive assembly control the drum plate assembly 20 to expand and contract radially in different ranges. In this way, when processing is performed, the diameter of the belt layer drum can be roughly adjusted over a large range through the second drive assembly. Specifically, the driving piston 51 moves in the piston cylinder 41. Since the pressure in the piston cylinder 41 is maintained, the movement of the piston 51 will drive the piston cylinder 41 to move together, thereby driving the guide rail assembly 30 to move axially, and the outer inclined surface squeezes the inner inclined surface, so that the diameter of the drum plate assembly 20 increases; and then the first drive assembly is used to The diameter of the belt drum is fine-tuned in a small range. Specifically, the piston cylinder 41 is driven to move as a whole. The movement of the piston cylinder 41 drives the guide rail assembly 30 to move, so that the outer bevel squeezes the inner bevel, thereby increasing the diameter of the drum plate assembly 20. In this way, when producing tires of the same size and specification during processing, there is no need to adjust the minimum diameter to the required diameter multiple times. Only small-range fine-tuning is required, that is, only the first drive assembly needs to be actuated, and the second drive assembly does not need to be actuated, thereby greatly shortening the time spent on adjusting the diameter and improving processing efficiency. In addition, compared with the previous large-scale adjustment method, the diameter of the drum can be partially adjusted, thereby ensuring the diameter accuracy, improving the production efficiency of the belt drum, and ensuring the product quality of the finished tire.

[0029] In this embodiment, the range of diameter change of the drum plate assembly 20 driven by the second driving assembly is greater than the range of diameter change of the drum plate assembly 20 driven by the first driving assembly, that is, the second driving assembly is used to adjust the diameter of the drum plate assembly 20 in a large range, while the first driving assembly is used to adjust the diameter of the drum plate assembly 20 in a small range. Of course, the specific functions of the first driving assembly and the second driving assembly can also be replaced with each other.

[0030] The first drive assembly of this embodiment also includes a pneumatic joint 42 and a cone disk 43. The pneumatic joint 42 is connected to the piston cylinder 41 and communicated with the cavity of the piston cylinder 41. The pneumatic joint 42 can be connected to the air source, so that pressure can be applied to the cavity of the piston cylinder 41 to achieve synchronous movement and relative movement of the piston 51 and the piston cylinder 41. The cone disk 43 is connected to the outer side of the piston cylinder 41 away from the center of the belt layer drum, and the two move synchronously. The side of the cone disk 43 away from the piston cylinder 41 is conical, and the conical surface is connected to the guide rail assembly 30, so that the guide rail assembly 30 forms an inclined outer inclined surface. Of course, the specific setting method of the piston cylinder 41 and the cone disk 43 can also be changed as needed, for example, the outer side of the piston cylinder 41 is directly set as an inclined surface.

[0031] The second drive assembly of this embodiment also includes a sleeve 52 and a lead screw nut assembly, wherein the sleeve 52 is axially movable and arranged outside the main shaft 10, and the sleeve 52 is connected to the piston 51, and the two move synchronously. The lead screw nut assembly includes a lead screw 53 and a nut 54, wherein the lead screw 53 is inserted into the main shaft 10, and the lead screw 53 can rotate relative to the rotating shaft, and the nut 54 is sleeved on the lead screw 53 and threadedly matched with the lead screw 53, and the nut 54 is connected to the sleeve 52 and moves synchronously, so that when the lead screw 53 is rotated, the lead screw 53 drives the nut 54 to move axially through the threaded match, and the movement of the nut 54 drives the sleeve 52 and the piston 51 to move axially, thereby realizing the axial movement of the piston 51 and the piston cylinder 41, and then realizing the extrusion fit between the outer bevel and the inner bevel. The distance that the lead screw nut assembly extends outward does not need to be very long, so it will not occupy too much space and will not affect the layout of the molding machine. Of course, the way in which the second drive member drives the piston 51 can also adopt other structural forms as needed. For example, a crank slider mechanism, etc.

[0032] The spindle 10 of this embodiment has an inner cavity, the lead screw 53 is inserted into the inner cavity, the nut 54 is also arranged in the inner cavity, and the side wall of the inner cavity has an avoidance hole, and a key or other component is used as a connecting member to be inserted into the avoidance hole and connected with the nut 54 and the sleeve 52, so that the nut 54 and the sleeve 52 are connected, so that the two can move axially synchronously. One end of the inner cavity has an opening, so that the lead screw 53 can extend from the opening to the spindle 10 and cooperate with other components such as the hand wheel 55, and the other end can be connected to the main box 80 and other components to realize the driving of the spindle 10.

[0033] The second driving assembly of this embodiment also includes a handwheel 55 and a transmission assembly 56. The handwheel 55 moves on the outside of the belt drum. One end of the lead screw 53 extends out of the main shaft 10. The handwheel 55 is arranged at the end of the lead screw 53 extending out of the main shaft 10. The handwheel 55 is connected to the lead screw 53 through the transmission assembly 56 and drives the lead screw 53 to rotate. In this way, the operator can adjust the piston 51 by rotating the handwheel 55. The transmission assembly 56 of this embodiment adopts a gear pair assembly. Of course, other transmission assemblies can also be used, and the adjustment method can adopt an automatic control method in addition to manual adjustment.

[0034] In this embodiment, the belt drum further includes an indicator 60, which is arranged on the outer surface of the belt drum and can display the diameter of the belt drum, so that the belt drum has a digital display function, which can display the drum diameter in real time, and does not need to manually measure the drum outer diameter every time, so that the operator can understand the use of the drum in time and improve efficiency. Multiple indicators 60 can be set as needed. In this embodiment, three indicators 60 are set, and they are arranged on the side with a circumferential interval of 120 degrees.

[0035] In this embodiment, the belt drum further includes a wall panel 70, which is disposed on the end surface of the belt drum and shields the first drive assembly, part of the second drive assembly and other components in the belt drum to protect the components and also serves as a shell component of the belt drum. The indicator 60 is disposed on the outer side of the wall panel 70.

[0036] The drum plate assembly 20 of this embodiment includes multiple drum plates 21 and multiple support blocks 22. The drum plates 21 are connected in sequence to form a cylindrical structure. The support blocks 22 are arranged on the inner side of the drum plates 21 and connected to the drum plates 21. The support blocks 22 are Z-shaped, and the side away from the drum plates 21 has an inner bevel to facilitate the cooperation with the outer bevel of the guide rail assembly 30.

[0037] This embodiment also provides a belt drum diameter adjustment method, using the above-mentioned belt drum, the belt drum diameter adjustment method includes:

[0038] Step S1: The second drive assembly of the belt drum is activated, and the pressure is maintained in the cavity of the piston cylinder 41 of the first drive assembly of the belt drum, the piston 51 of the second drive assembly moves, and drives the piston cylinder 41 to move synchronously, the piston cylinder 41 drives the guide rail assembly 30 of the belt drum to move, the outer inclined surface of the guide rail assembly 30 squeezes the inner inclined surface of the drum plate assembly 20 of the belt drum, and the diameter of the drum plate assembly 20 increases to a rough size. When the second drive assembly is activated, the operator turns the hand wheel 55, the hand wheel 55 drives the lead screw 53 to rotate through the transmission assembly 56, the lead screw 53 drives the nut 54 to move axially, the nut 54 drives the sliding sleeve 52 and the piston 51 to move axially synchronously, the piston 51 drives the piston cylinder 41 and the guide rail assembly 30 to move, the outer inclined surface of the guide rail assembly 30 squeezes the inner inclined surface of the drum plate assembly 20, so that the diameter of the drum plate assembly 20 increases;

[0039] Step S2: The first drive assembly is activated, and the piston 51 remains stationary, the piston cylinder 41 moves, the piston cylinder 41 drives the guide rail assembly 30 to move, the outer bevel squeezes the inner bevel, and the diameter of the drum plate assembly 20 increases to a precise size. When the first drive assembly is activated, the pneumatic joint 42 passes gas into a cavity of the piston cylinder 41 to apply pressure, driving the piston cylinder 41, the cone 43 and the guide rail assembly 30 to move axially, and the outer bevel drives the inner bevel to increase the diameter of the drum plate assembly 20;

[0040] Step S3: the main shaft 10 rotates under the action of the main box 80, the rubber coating is completed and the joints are rolled firmly, and then the 2#, 3#, and 4# belt layers are automatically laminated in sequence and the joints are rolled firmly, completing the process of laminating the rubber of each belt layer and rolling the joints firmly;

[0041] Step S4: The first driving assembly is actuated, and the piston 51 remains stationary, the piston cylinder 41 moves in the reverse direction, the piston cylinder 41 drives the guide rail assembly 30 to move in the reverse direction, the guide rail assembly 30 drives the drum plate assembly 20 to move, and the diameter of the drum plate assembly 20 is reduced to a rough size. When the first driving assembly is actuated, the pneumatic joint 42 passes gas into the cavity of the piston cylinder 41 to apply negative pressure or applies positive pressure to another cavity, driving the piston cylinder 41, the cone disk 43 and the guide rail assembly 30 to move axially, and the outer inclined surface drives the inner inclined surface to reduce the diameter of the drum plate assembly 20;

[0042] Step S5: The processed tire is unloaded from the forming machine and the next tire is processed. If the tires of the same size and specification are to be produced, steps S2 to S5 are repeated. If the tires of different sizes and specifications are to be produced, the drum diameter is reduced to the minimum diameter and steps S1 to S5 are repeated.

[0043] By using the above method, when adjusting the diameter of the belt drum, when producing tires of the same size and specification, only the first drive assembly needs to be adjusted, and the diameter of the belt drum can be adjusted within a small range, without having to adjust the diameter of the belt drum over a large range through the second drive assembly, thereby improving efficiency. It should be noted that the rough size mentioned here refers to a size that is a certain distance from the required diameter size, which is larger than the minimum diameter of the belt drum, and the precise size refers to a size that is substantially the same as the required diameter size, and its specific value can be determined according to actual processing.

[0044] It should be noted that, the multiple in the above embodiments refers to at least two.

[0045] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0046] 1. Solve the problem of low working efficiency of belt drum in the prior art;

[0047] 2. When producing tires of the same size and specification, there is no need to adjust the minimum diameter to the required diameter multiple times. Only a small range of fine-tuning is required, which greatly shortens the time spent on adjusting the diameter and improves processing efficiency;

[0048] 3. The diameter of the drum can be partially adjusted to ensure the diameter accuracy, improve the production efficiency of the belt drum, and ensure the product quality of the finished tire;

[0049] 4. The distance that the screw nut assembly extends outward does not need to be very long, so it will not take up too much space and will not affect the layout of the molding machine.

[0050] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A belt drum, characterized in that: include: Spindle (10); a drum plate assembly (20), the drum plate assembly (20) being circumferentially arranged outside the main shaft (10) and being capable of moving radially along the main shaft (10); A guide rail assembly (30), the guide rail assembly (30) being axially movable and arranged between the drum plate assembly (20) and the main shaft (10), the guide rail assembly (30) having an outer inclined surface, the drum plate assembly (20) having an inner inclined surface, the outer inclined surface being pressed against the inner inclined surface to drive the drum plate assembly (20) to move radially; A first driving assembly, the first driving assembly comprising a movably arranged piston cylinder (41), the piston cylinder (41) being connected to the guide rail assembly (30), and the two moving synchronously; A second drive assembly, the second drive assembly comprising a piston (51), the piston (51) being axially movably disposed in the piston cylinder (41); When the first driving assembly is actuated, the piston (51) remains stationary, the piston cylinder (41) moves, the piston cylinder (41) drives the guide rail assembly (30) to move, and the outer inclined surface squeezes the inner inclined surface so that the diameter of the drum plate assembly (20) increases; when the second driving assembly is actuated, pressure is maintained in the cavity of the piston cylinder (41), the piston (51) moves, and drives the piston cylinder (41) to move synchronously, the piston cylinder (41) drives the guide rail assembly (30) to move, and the outer inclined surface squeezes the inner inclined surface so that the diameter of the drum plate assembly (20) increases.

2. The belt drum according to claim 1, characterized in that: The range in which the second driving assembly drives the drum plate assembly (20) to change its diameter is greater than the range in which the first driving assembly drives the drum plate assembly (20) to change its diameter.

3. The belt drum according to claim 1, characterized in that: The first drive assembly also includes: A pneumatic joint (42), the pneumatic joint (42) being connected to the piston cylinder (41) and communicating with the cavity of the piston cylinder (41) so as to apply pressure to the cavity of the piston cylinder (41); A cone disk (43) is connected to the piston cylinder (41) and moves synchronously. The side of the cone disk (43) away from the piston cylinder (41) is conical, and the conical surface of the cone is connected to the guide rail assembly (30).

4. The belt drum according to claim 3, characterized in that: The second drive assembly further comprises: A sliding sleeve (52), the sliding sleeve (52) being axially movable and arranged outside the main shaft (10), the sliding sleeve (52) being connected to the piston (51), and the two move synchronously; A screw and nut assembly, the screw and nut assembly comprising a screw (53) and a nut (54), the screw (53) being passed through the main shaft (10), the nut (54) being sleeved on the screw (53) and threadably matched with the screw (53), the nut (54) being connected to the sleeve (52) and moving synchronously, the screw (53) driving the sleeve (52) and the piston (51) to move axially through the nut (54).

5. The belt drum according to claim 4, characterized in that: The second drive assembly further comprises: A hand wheel (55), wherein the hand wheel (55) moves on the outside of the belt layer drum, one end of the lead screw (53) extends out of the main shaft (10), and the hand wheel (55) is arranged on the end of the lead screw (53) extending out of the main shaft (10); The hand wheel (55) is connected to the lead screw (53) through the transmission assembly (56), and drives the lead screw (53) to rotate.

6. The belt drum according to claim 4, characterized in that The main shaft (10) is provided with an inner cavity, the lead screw (53) is inserted into the inner cavity, the nut (54) is arranged in the inner cavity, a side wall of the inner cavity is provided with an avoidance hole, a connecting piece is inserted into the avoidance hole and is connected to the nut (54) and the sliding sleeve (52), so that the nut (54) and the sliding sleeve (52) move synchronously.

7. The belt drum according to claim 1, characterized in that: The belt drum further comprises an indicator (60), which is arranged on the outer surface of the belt drum and can display the diameter of the belt drum.

8. The belt drum according to claim 7, characterized in that The belt drum further comprises a wall panel (70), wherein the wall panel (70) is arranged on the end surface of the belt drum and shields components inside the belt drum, and the indicator (60) is arranged on the outer side surface of the wall panel (70).

9. The belt drum according to claim 1, characterized in that: The drum plate assembly (20) comprises: A plurality of drum plates (21), wherein the drum plates (21) are connected in sequence to form a cylindrical structure; A plurality of support blocks (22) are provided on the inner side of the drum plate (21) and connected to the drum plate (21); a side of the support block (22) away from the drum plate (21) has the inner inclined surface.

10. A belt drum diameter adjustment method, characterized in that: Using the belt drum according to claim 5, the belt drum diameter adjustment method comprises: Step S1: the second driving assembly of the belt drum is activated, and the pressure is maintained in the cavity of the piston cylinder (41) of the first driving assembly of the belt drum, the piston (51) of the second driving assembly moves, and drives the piston cylinder (41) to move synchronously, the piston cylinder (41) drives the guide rail assembly (30) of the belt drum to move, the outer inclined surface of the guide rail assembly (30) presses the inner inclined surface of the drum plate assembly (20) of the belt drum, and the diameter of the drum plate assembly (20) increases to a rough size; Step S2: the first driving assembly is actuated, and the piston (51) remains stationary, the piston cylinder (41) moves, the piston cylinder (41) drives the guide rail assembly (30) to move, the outer inclined surface squeezes the inner inclined surface, and the diameter of the drum plate assembly (20) increases to a precise size; Step S3: the main shaft (10) rotates to apply the rubber materials of each belt layer and roll the joints firmly; Step S4: the first driving assembly is actuated, and the piston (51) remains stationary, the piston cylinder (41) moves in the reverse direction, the piston cylinder (41) drives the guide rail assembly (30) to move in the reverse direction, the guide rail assembly (30) drives the drum plate assembly (20) to move, and the diameter of the drum plate assembly (20) is reduced to the rough size; Step S5: Unload the processed tire and proceed to process the next tire. If tires of the same size and specification are to be produced, repeat steps S2 to S5. If tires of different sizes and specifications are to be produced, repeat steps S1 to S5.

11. The belt drum diameter adjustment method according to claim 10, characterized in that: When the second driving assembly is in operation, the hand wheel (55) rotates, and the hand wheel (55) drives the lead screw (53) to rotate through the transmission assembly (56), and the lead screw (53) drives the nut (54) to move axially, and the nut (54) drives the sliding sleeve (52) and the piston (51) to move synchronously, and the piston (51) drives the piston cylinder (41) and the guide rail assembly (30) to move, and the outer inclined surface of the guide rail assembly (30) presses the inner inclined surface of the drum plate assembly (20) to increase the diameter of the drum plate assembly (20).

12. The belt drum diameter adjustment method according to claim 10, characterized in that: When the first driving assembly is in operation, the pneumatic joint (42) passes gas into the cavity of the piston cylinder (41) to apply pressure, thereby driving the piston cylinder (41), the cone disk (43) and the guide rail assembly (30) to move axially, and the outer inclined surface drives the inner inclined surface to increase or decrease the diameter of the drum plate assembly (20).

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