Tire body drum expanding and shrinking mechanism and tire body drum

Abstract

The utility model provides a tire body drum expanding and shrinking mechanism and a tire body drum. The carcass drum expanding and shrinking mechanism comprises a frustum structure, the frustum structure is provided with a first inclined plane and a second inclined plane, the first inclined plane and the second inclined plane are obliquely arranged relative to the axis of the frustum structure, and the first inclined plane and the second inclined plane extend in the circumferential direction of the frustum structure and are arranged along the axis of the frustum structure; and the sliding rail assemblies are connected with the frustum structure, the sliding rail assemblies are arranged on the first inclined face and the second inclined face, and the frustum structure drives the outer side faces of the sliding rail assemblies to expand or contract in the radial direction when moving in the axial direction. The utility model solves the problem that the slide rail structure on the carcass drum in the prior art cannot be effectively arranged on the frustum structure.

Description

Technical Field

[0001] The utility model relates to the technical field of tire processing, in particular to a tire drum expansion and contraction mechanism and a tire drum. Background Art

[0002] The rubber sleeve carcass drum is the core component of the forming machine. Its working process is as follows: after the rubber sleeve carcass drum is propped up, the material pasting and rolling processes are carried out. After the carcass tube is completed, the carcass drum shrinks and the carcass tube is unloaded.

[0003] The existing structure is a nylon cone structure used on the carcass drum. Usually, the cone moves axially under the action of the screw, and the support plate expands and contracts radially under the support of the nylon cone. Some solutions use a circle of slide rail structures on the circumference of the cone structure, and use the slide rail structure to cooperate with the support plate to achieve expansion and contraction of the support plate.

[0004] However, the above scheme has a small space for the cone structure or a large number of slide rail structures due to the large number of drum shoes. This limits the space for the slide rail structure when it is arranged, resulting in jamming and instability of the support plate. Sometimes, the slide rail structure cannot be arranged, resulting in the support plate being unable to expand or contract. In addition, in the existing scheme, the support plate needs to return to its original position under the action of the return spring and the rubber sleeve, which poses a risk of jamming. In addition, the support plate is supported by the nylon cone, which poses a risk of wear of the nylon cone. Utility Model Content

[0005] The main purpose of the utility model is to provide a carcass drum expansion and contraction mechanism and a carcass drum, so as to solve the problem that the slide rail structure on the carcass drum in the prior art cannot be effectively arranged on the frustum structure.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a carcass expansion and contraction mechanism is provided, including: a frustum structure, the frustum structure having a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface are inclined relative to the axis of the frustum structure, the first inclined surface and the second inclined surface extend along the circumference of the frustum structure respectively, and are arranged along the axis of the frustum structure; a plurality of slide rail assemblies, the slide rail assemblies are connected to the frustum structure, and the first inclined surface and the second inclined surface are both provided with slide rail assemblies, and the outer side surface of the slide rail assembly is driven to radially expand or contract when the frustum structure moves axially.

[0007] Furthermore, the first inclined surface has a plurality of first mounting positions, which are arranged circumferentially along the frustum structure; the second inclined surface has a plurality of second mounting positions, which are arranged circumferentially along the frustum structure; and the slide rail assembly is arranged at the first mounting position and the second mounting position.

[0008] Further, along the axial direction of the frustum structure, there is at least one second installation position between two adjacent first installation positions, and / or there is at least one first installation position between two adjacent second installation positions.

[0009] Furthermore, along the axial direction of the frustum structure, the first installation position and the second installation position are alternately arranged in sequence.

[0010] Furthermore, the first inclined surface and the second inclined surface are arranged in parallel.

[0011] Furthermore, the slide rail assembly includes a first sliding member and a second sliding member, which are movably arranged between the first sliding member and the second sliding member. The first sliding member is connected to the frustum structure, and the second sliding member is connected to the support plate of the carcass drum. When the frustum structure moves axially, the frustum structure drives the first sliding member to move relative to the second sliding member, so that the second sliding member expands or contracts radially.

[0012] Furthermore, a sliding track line between the first sliding member and the second sliding member is arranged parallel to the first inclined surface or the second inclined surface.

[0013] Furthermore, the slide rail assembly also includes a pad, which is arranged on the outer side of the second sliding member and moves synchronously with the second sliding member.

[0014] Furthermore, the frustum structure is an integral component, or the frustum structure includes a plurality of subcomponents, and the subcomponents are butt-jointed to form the frustum structure.

[0015] According to another aspect of the utility model, a carcass drum is provided, comprising: a main shaft; the above-mentioned carcass drum expansion and contraction mechanism, the conical structure of the carcass drum expansion and contraction mechanism is sleeved on the outside of the main shaft and can move axially relative to the main shaft; a plurality of support plates, the support plates are connected to the outer side surfaces of the slide rail assembly, all the support plates form an annular structure, and when the conical structure moves axially, the support plates are driven to expand and contract radially through the slide rail assembly.

[0016] By applying the technical solution of the utility model, two inclined surfaces, the first inclined surface and the second inclined surface, are provided on the frustum structure, and the slide rail assembly can be provided on both the first inclined surface and the second inclined surface, so that when the size of the frustum structure is small or the number of the slide rail assemblies is large, the slide rail assembly can be provided on the first inclined surface and the second inclined surface at the same time, so that the number of the slide rail assemblies that can be provided on the frustum structure is greatly increased, and at the same time, the inclined setting mode of the first inclined surface and the second inclined surface enables the slide rail assembly to drive the support plate to expand and contract radially when the frustum structure moves axially after the slide rail assembly is installed on the inclined surface. The above setting mode optimizes the design of the frustum structure, and also optimizes the design of the arrangement mode of the slide rail assembly on the frustum structure, so that a larger number of slide rail assemblies can be provided on the frustum structure to meet the needs in different scenarios. At the same time, compared with the solution of returning under the action of the return spring and the rubber sleeve, the slide rail assembly is used to realize bidirectional drive, so that there is no need for return springs, rubber sleeves and other components, the structure is simpler, and the return is smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting 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 on the present invention. In the drawings:

[0018] Figure 1 A side view of the carcass expansion and contraction mechanism of the utility model is shown;

[0019] Figure 2 Shows Figure 1 The main cross-sectional view in the EE direction;

[0020] Figure 3 Shows Figure 2 An enlarged view of the middle slide rail assembly;

[0021] Figure 4 Shows Figure 2 Schematic diagram of the structure of the frustum.

[0022] The above drawings include the following reference numerals:

[0023] 10. Cone structure; 11. First inclined plane; 12. Second inclined plane; 20. Slide rail assembly; 21. First sliding member; 22. Second sliding member; 23. Pad; 30. Main shaft; 40. Support plate. DETAILED DESCRIPTION

[0024] 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 utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] 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.

[0026] 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.

[0027] In order to solve the problem in the prior art that the slide rail structure on the carcass drum cannot be effectively arranged on the frustum structure, the utility model provides a carcass drum expansion and contraction mechanism and a carcass drum.

[0028] like Figures 1 to 4 As shown, a carcass expansion and contraction mechanism includes a frustum structure 10 and a plurality of slide rail assemblies 20, the frustum structure 10 has a first inclined surface 11 and a second inclined surface 12, the first inclined surface 11 and the second inclined surface 12 are inclined relative to the axis of the frustum structure 10, the first inclined surface 11 and the second inclined surface 12 extend along the circumference of the frustum structure 10 respectively, and are arranged along the axis of the frustum structure 10; the slide rail assembly 20 is connected to the frustum structure 10, and the first inclined surface 11 and the second inclined surface 12 are both provided with the slide rail assembly 20, when the frustum structure 10 moves axially, the outer side surface of the slide rail assembly 20 is driven to expand or contract radially.

[0029] In this embodiment, two inclined surfaces, a first inclined surface 11 and a second inclined surface 12, are provided on the frustum structure 10, and the slide rail assembly 20 can be provided on both the first inclined surface 11 and the second inclined surface 12, so that when the size of the frustum structure 10 is small or the number of the slide rail assemblies 20 is large, the slide rail assembly 20 can be provided on the first inclined surface 11 and the second inclined surface 12 at the same time, so that the number of the slide rail assemblies 20 that can be provided on the frustum structure 10 is greatly increased, and at the same time, the inclined arrangement of the first inclined surface 11 and the second inclined surface 12 enables the slide rail assembly 20 to drive the support plate 40 to expand and contract radially when the frustum structure 10 moves axially after the slide rail assembly 20 is installed on the inclined surface. The above arrangement optimizes the design of the frustum structure 10, and also optimizes the arrangement of the slide rail assembly 20 on the frustum structure 10, so that a larger number of slide rail assemblies 20 can be provided on the frustum structure 10 to meet the needs in different scenarios. At the same time, compared with the solution of returning under the action of a return spring and a rubber sleeve, the slide rail assembly 20 is used to achieve bidirectional driving, so that components such as a return spring and a rubber sleeve are not required, the structure is simpler, and the return is smoother.

[0030] It should be noted that this embodiment is described by taking two inclined surfaces, namely the first inclined surface 11 and the second inclined surface 12 as an example. Of course, the number of inclined surfaces can be increased as needed, and the inclined surfaces can be completely independent annular surfaces or spiral surfaces with surface docking relationship.

[0031] like Figure 4 As shown, in this embodiment, the first inclined surface 11 has a plurality of first mounting positions, which are arranged along the circumference of the frustum structure 10, and the second inclined surface 12 has a plurality of second mounting positions, which are arranged along the circumference of the frustum structure 10. The first mounting position and the second mounting position may be provided with mounting structures such as mounting holes, and the slide rail assembly 20 may be installed at the first mounting position and the second mounting position by means of bolts and other components. In this embodiment, it is preferred that the first mounting positions are evenly distributed circumferentially, and the second mounting positions are also evenly distributed circumferentially, so as to ensure the uniformity and balance of the force applied to the support plate 40 by the slide rail assembly 20 when the frustum structure 10 moves axially, and ensure the smooth movement of the support plate 40.

[0032] In this embodiment, along the axial direction of the frustum structure 10, there is at least one second installation position between two adjacent first installation positions, and / or there is at least one first installation position between two adjacent second installation positions. Preferably, this embodiment adopts a method of alternately arranging the first installation position and the second installation position in sequence along the axial direction of the frustum structure 10. It should be noted that the alternate arrangement mentioned here refers to the circumference of the frustum structure 10 as a whole, that is, it is a combination of the first inclined surface 11 and the second inclined surface 12. In this way, along the circumference of the frustum structure 10 as a whole, there are one slide rail assembly 20 on the first inclined surface 11, one slide rail assembly 20 on the second inclined surface 12, another slide rail assembly 20 on the first inclined surface 11... and so on, so that the corresponding position of each slide rail assembly 20 on the second inclined surface 12 on the first inclined surface 11 is respectively located between the two slide rail assemblies 20 on the first inclined surface 11. In this way, the avoidance between the two adjacent slide rail assemblies 20 can be better achieved, the cooperation between the slide rail assembly 20 and the support plate 40 can be ensured, and the smooth expansion and contraction of the support plate 40 can be ensured. Of course, in addition to the above-mentioned alternate arrangement, other arrangements may be used, such as providing a slide rail assembly 20 with a second inclined surface 12 every two slide rail assemblies 20 with first inclined surfaces 11 .

[0033] In this embodiment, in order to ensure the uniformity of movement between the slide rail assemblies 20 on different inclined planes, this embodiment sets the first inclined plane 11 and the second inclined plane 12 in parallel. In this way, the slide rail assemblies 20 can adopt the same structure, which can ensure the uniformity of movement on the one hand and facilitate processing and installation on the other hand.

[0034] like Figure 3As shown, in this embodiment, the slide rail assembly 20 adopts a guide rail structure, specifically, it includes a first sliding member 21 and a second sliding member 22, the first sliding member 21 and the second sliding member 22 are movably arranged, one of the two adopts an inclined track structure, and the other is slidably arranged on the track structure, so that the relative movement between the two can be achieved. At the same time, the first sliding member 21 is connected to the cone structure 10, and the second sliding member 22 is connected to the support plate 40 of the carcass drum, so that when the cone structure 10 moves axially, the cone structure 10 drives the first sliding member 21 to move synchronously, and the first sliding member 21 squeezes the second sliding member 22, so that the first sliding member 21 and the second sliding member 22 move relative to each other, thereby realizing the radial expansion or contraction of the second sliding member 22, and also realizing the action of the second sliding member 22 driving the support plate 40 to expand and contract.

[0035] Preferably, the sliding track line between the first sliding member 21 and the second sliding member 22, that is, the inclination direction of the track structure is arranged parallel to the first inclined surface 11 or the second inclined surface 12. More specifically, the first inclined surface 11, the second inclined surface 12, and the track structure of this embodiment have the same inclination direction and are arranged in parallel, so that the conical structure can better transmit force when moving, ensuring the driving effect on the expansion and contraction of the support plate 40.

[0036] In this embodiment, the slide rail assembly 20 further includes a pad 23, which is disposed on the outer side of the second sliding member 22 and moves synchronously with the second sliding member 22. Compared with the traditional method of contact and cooperation between the frustum structure and the inclined surface of the support plate, the cooperation between the first sliding member 21 and the second sliding member 22 can reduce wear. The arrangement of the pad 23 can further reduce wear and avoid direct contact between the second sliding member 22 and the support plate 40. In this embodiment, the second sliding member 22, the pad 23 and the support plate 40 are connected by bolts, that is, all three are provided with mounting holes, and the bolts are passed through the mounting holes of the three to achieve the installation connection of the three.

[0037] Optionally, the specific formation form of the frustum structure 10 can be set accordingly as needed. The frustum structure 10 can be an integrated integral component, or can include multiple subcomponents, and the subcomponents are connected to form the frustum structure 10.

[0038] like Figure 1 and Figure 2As shown, this embodiment also provides a carcass drum, including a main shaft 30, the above-mentioned carcass drum expansion and contraction mechanism and a plurality of support plates 40. The cone structure 10 of the carcass drum expansion and contraction mechanism is sleeved on the outside of the main shaft 30. The main shaft 30 and the cone structure 10 can be matched with threads such as a lead screw, so that when the main shaft 30 rotates, the cone structure 10 can move axially relative to the main shaft 30. The support plate 40 is connected to the outer side of the slide rail assembly 20, and all the support plates 40 form an annular structure. In this way, when the cone structure 10 moves axially, the slide rail assembly 20 drives all the support plates 40 to synchronously perform radial expansion and contraction movements to achieve adjustment of the diameter of the carcass drum.

[0039] Optionally, multiple carcass drum expansion and contraction mechanisms can be provided as needed, and carcass drum expansion and contraction mechanisms are provided on both sides of the axial symmetry of the support plate 40, that is, on both sides of the midline perpendicular to the axis of the main shaft 30, and the first inclined surface 11 and the second inclined surface 12 of the cone structure 10 of the carcass drum expansion and contraction mechanisms on both sides are inclined in opposite directions. In this way, the carcass drum expansion and contraction mechanisms on both sides can act synchronously to achieve the expansion and contraction of the entire carcass drum diameter.

[0040] The main process steps of the carcass drum of this embodiment when in use are as follows:

[0041] 1. Under the action of the molding machine chassis, etc., the frustum assembly moves axially under the action of the lead screw of the main shaft 30, and the frustum assembly moves left and right, and the support plate 40 is driven to move radially under the action of the slide rail assembly 20 to support the entire drum;

[0042] 2. Carry out pasting;

[0043] 3. After the material is attached, the cone assembly moves axially under the action of the lead screw of the main shaft 30, and the cone assembly moves left and right, and the support plate 40 is driven to move radially under the action of the slide rail assembly 20 to achieve the contraction of the whole drum;

[0044] 4. Remove the tire body.

[0045] It should be noted that, the multiple in the above embodiments refers to at least two.

[0046] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0047] 1. Solve the problem that the slide rail structure on the carcass drum in the prior art cannot be effectively arranged on the frustum structure;

[0048] 2. Achieve avoidance between two adjacent slide rail assemblies, so that more slide rail assemblies can be set on the cone structure to meet the needs of different scenarios;

[0049] 3. No return spring, rubber sleeve and other components are required, the structure is simpler and the return is smoother;

[0050] 4. The slide rail assembly can reduce wear.

[0051] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0052] 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.

[0053] 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.

[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A carcass expansion and contraction mechanism, characterized in that: include: A frustum structure (10), the frustum structure (10) comprising a first inclined surface (11) and a second inclined surface (12), the first inclined surface (11) and the second inclined surface (12) being arranged obliquely relative to the axis of the frustum structure (10), the first inclined surface (11) and the second inclined surface (12) respectively extending along the circumference of the frustum structure (10), and being arranged along the axis of the frustum structure (10); A plurality of slide rail assemblies (20) are connected to the frustum structure (10), and the slide rail assemblies (20) are arranged on the first inclined surface (11) and the second inclined surface (12), and when the frustum structure (10) moves axially, the outer side surface of the slide rail assembly (20) is driven to expand or contract radially.

2. The tire body expansion and contraction mechanism according to claim 1, characterized in that: The first inclined surface (11) has a plurality of first mounting positions, which are arranged along the circumference of the frustum structure (10); the second inclined surface (12) has a plurality of second mounting positions, which are arranged along the circumference of the frustum structure (10); and the slide rail assembly (20) is arranged at the first mounting positions and the second mounting positions.

3. The tire body expansion and contraction mechanism according to claim 2, characterized in that: Along the axial direction of the frustum structure (10), there is at least one of the second mounting positions between two adjacent first mounting positions, and / or there is at least one of the first mounting positions between two adjacent second mounting positions.

4. The tire body expansion and contraction mechanism according to claim 3, characterized in that: Along the axial direction of the frustum structure (10), the first installation positions and the second installation positions are alternately arranged in sequence.

5. The tire body expansion and contraction mechanism according to claim 1, characterized in that: The first inclined surface (11) and the second inclined surface (12) are arranged in parallel.

6. The tire body expansion and contraction mechanism according to claim 1, characterized in that: The slide rail assembly (20) comprises a first sliding member (21) and a second sliding member (22), wherein the first sliding member (21) and the second sliding member (22) are movably arranged, the first sliding member (21) is connected to the frustum structure (10), and the second sliding member (22) is connected to a support plate (40) of a carcass drum, and when the frustum structure (10) moves axially, the frustum structure (10) drives the first sliding member (21) to move relative to the second sliding member (22), so that the second sliding member (22) radially expands or contracts.

7. The tire body expansion and contraction mechanism according to claim 6, characterized in that: A sliding track line between the first sliding member (21) and the second sliding member (22) is arranged parallel to the first inclined surface (11) or the second inclined surface (12).

8. The tire body expansion and contraction mechanism according to claim 6, characterized in that: The slide rail assembly (20) further comprises a backing plate (23), which is arranged on the outer side surface of the second sliding member (22) and moves synchronously with the second sliding member (22).

9. The tire body expansion and contraction mechanism according to claim 1, characterized in that: The frustum structure (10) is an integral component, or the frustum structure (10) comprises a plurality of subcomponents, and the subcomponents are butt-jointed to form the frustum structure (10).

10. A carcass drum, characterized in that: include: Spindle (30); The carcass expansion and contraction mechanism according to any one of claims 1 to 9, wherein the frustum structure (10) of the carcass expansion and contraction mechanism is sleeved on the outside of the main shaft (30) and is axially movable relative to the main shaft (30); A plurality of support plates (40) are provided, wherein the support plates (40) are connected to the outer side surface of the slide rail assembly (20), and all the support plates (40) form an annular structure. When the frustum structure (10) moves axially, the support plates (40) are driven to expand and contract radially through the slide rail assembly (20).

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