Belt positioning structure for a belt drum

Abstract

The utility model belongs to tire belt layer technology field, concretely relates to a kind of belt layer positioning structure of belt layer drum, including belt layer drum, and several blocks of drum plate 4 are fixed on circumferential array of belt layer drum, and fixed structure for fixing belt layer 5 is provided on drum plate 4, and fixed structure includes the fixing piece 1 fixed to the outer surface of drum plate 4, and the top of fixing piece 1 forms thorn structure;Fixed belt layer 5 includes steel wire layer 51 and the rubber layer 52 covered outside steel wire layer 51;So that thorn structure pierces into rubber layer 52 to fix belt layer 5, relative to prior art, the utility model is positioned to belt layer by fixing piece pierces into rubber layer, and fixed effect is better.

Description

Technical Field

[0001] This utility model belongs to the field of tire belt layer bonding technology, specifically relating to a belt layer positioning structure for a belt layer drum. Background Technology

[0002] The belt layer is the main load-bearing component of radial tires, providing strong clamping force to maintain the tire's profile. For the belt layer bonding process, different tire sizes typically involve 3-6 layers stacked sequentially from the inside out. During bonding, rolling is required every two to three layers; this rolling process is a common operation to ensure a tighter bond and remove air bubbles. However, during rolling, uneven stress can easily occur, causing the belt layer to shift relative to the drum, affecting the tire's strength and lifespan.

[0003] The belt layer drum itself is mainly composed of drum plates assembled together. Currently, the bonding of the belt layer relies primarily on magnets on the drum surface for fixation, but this method cannot completely prevent the belt layer from shifting relative to the drum plate. How to effectively prevent belt layer shifting during the rolling process and improve the precision and stability of tire manufacturing remains a technical challenge. CN216127783U proposes a contamination-resistant belt layer drum for tire forming machines, mentioning the use of anti-slip teeth on the drum plate to abut against the belt layer for anti-slip purposes. However, simply increasing friction through anti-slip teeth has limited fixing effect. Utility Model Content

[0004] To effectively prevent belt layer misalignment during the rolling process, this invention provides a belt layer positioning structure for a belt layer drum.

[0005] The purpose of this utility model is achieved in the following manner: a belt layer positioning structure for a belt layer drum, including a belt layer drum, several drum plates 4 are fixed in a circumferential array on the belt layer drum, and a fixing structure for fixing the belt layer 5 is provided on the drum plate 4. The fixing structure includes a fixing member 1 fixed to the outer surface of the drum plate 4, and a spike-like structure is formed on the top of the fixing member 1; the fixed belt layer 5 includes a steel wire layer 51 and a rubber layer 52 covering the outside of the steel wire layer 51; so that the spike-like structure pierces into the rubber layer 52 to fix the belt layer 5.

[0006] Furthermore, the distance from the tip of the spike structure to the outer surface of the drum plate 4 is x, and the thickness of the rubber layer 52 on the side of the wire layer 51 is y, where 0.7y≤x≤0.9y.

[0007] Furthermore, x is 3~5mm.

[0008] Furthermore, a set of fixing members 1 are provided along the width direction of the drum plate 4 to form a set of fixing members 1. In the set of fixing members 1, the distance between adjacent fixing members 1 gradually decreases from the middle of the drum plate 4 to both ends of the drum plate 4.

[0009] Furthermore, the spacing between the fixing members 1 in the middle of the drum plate 4 is 40~50mm; the spacing between the fixing members 1 at the ends of the drum plate 4 is 60~70mm.

[0010] Furthermore, the fastener 1 is made of 45 steel.

[0011] Furthermore, the outer surface of the fastener 1 is coated with a polytetrafluoroethylene coating.

[0012] As one option, the outer surface of the drum plate 4 is provided with an inlay groove 41, and the fastener 1 is fixed in the inlay groove 41.

[0013] As one embodiment, the drum plate 4 includes a main plate 42 and a split plate 43 that is snapped into the main plate 42. The fastener 1 is fixed to the split plate 43. A screw 44 is fixed to the bottom of the main plate 42. The split plate 43 is provided with a mounting hole 45 that mates with the screw 44.

[0014] Furthermore, a magnet 6 is fixed to the surface of the drum plate 4.

[0015] Compared to existing technologies, this invention uses a fastener to insert into the rubber layer to position the belt layer, resulting in a better fixation effect. Attached Figure Description

[0016] Figure 1 This is a top view schematic diagram of the surface structure of multiple belt-driven drum plates; Figure 2 This is the front view of one of the drum plate designs; Figure 3 This is the front view of the second drum design; Figure 4 This is the front view of the third drum design scheme; Figure 5 This is a schematic diagram of the structure of the belt layer bonded to the drum plate; Figure 6 This is a sectional view of the first type of mating method between the drum plate and the fixing component; Figure 7 This is a cross-sectional view of the second type of mating method between the drum plate and the fixing component.

[0017] Among them, there are: fastener 1, fastener sparse area 2, fastener dense area 3, drum plate 4, inlay groove 41, body plate 42, split plate 43, screw 44, mounting hole 45, belt layer 5, steel wire layer 51, rubber layer 52, and magnet 6. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] As attached Figure 1 As shown, a belt layer positioning structure for a belt layer drum includes a belt layer drum, several drum plates 4 are fixed in a circumferential array on the belt layer drum, and a fixing structure for fixing the belt layer 5 is provided on the drum plates 4. The fixing structure includes a fixing member 1 fixed to the outer surface of the drum plate 4, and the top of the fixing member 1 forms a spike-like structure. Specifically, the fixing member 1 can be as follows: Figure 3 , 4 A cone-shaped structure, or it can be like... Figure 2 The tapered structure formed on the columnar structure, both of which can be derived from the rivet end, and the size of the rivet end can be adjusted according to different tire size specifications (25-63 inches); the fixed belt layer 5 includes a steel wire layer 51 and a rubber layer 52 covering the outside of the steel wire layer 51, and this structure of the belt layer 5 is the prior art; the spike structure pierces into the rubber layer 52 to fix the belt layer 5; the belt layer 5 supports the steel wire layer 51 in the tire, so piercing the rubber layer 52 without scratching the steel wire layer 51 will not affect the product performance.

[0021] This structure can be applied to Figure 2 , 3 The bulging drum plate 4 structure in the middle can also be used. Figure 4 The middle flat plate has a drum-like structure.

[0022] Further details are attached. Figure 5As shown, the distance from the top of the spike structure to the outer surface of the drum plate 4 is x, and the thickness of the rubber layer 52 on the side of the steel wire layer 51 is y, 0.7y≤x≤0.9y; it is required that the fastener 1 penetrates the rubber layer 52 without scratching the steel wire layer 51, and also ensures an effective fixation state. The height of the spike structure is preferably this value. In actual use, the most preferred value is that the depth of the fastener 1 penetrating the rubber layer 52 is about 85% of the thickness of the rubber layer 52, which can ensure that the fastener 1 has sufficient strength when fixing the belt layer 5, but will not excessively compress or cut the steel wire layer 51.

[0023] Furthermore, based on the thickness of the rubber layer 52 of the conventional belt layer 5, the value of x is taken as 3~5mm.

[0024] Furthermore, fasteners 1 are arranged along the width direction of the drum plate 4, forming a group / row of fasteners 1. One row of fasteners 1 on each drum plate 4 is sufficient to achieve the fixing effect. In a group of fasteners 1, the spacing between adjacent fasteners 1 gradually decreases from the middle of the drum plate 4 to both ends. The purpose of this arrangement is that when the density of the fasteners 1 is high, the belt layer 5 is prone to detachment during the bonding process. When the density of the fasteners 1 is low, the fixing effect is weak, and the belt layer 5 may experience significant slippage or displacement during the rolling process. A suitable density of fasteners 1 helps to provide a more uniform pressure distribution and prevents local pressure imbalance caused by improper positioning of the fasteners 1. In particular, for high-performance engineering machinery tires, the density of the fastener 1 cannot be too low; therefore, a local density optimization design is adopted. According to the feeding sequence of the belt layer 5, the belt layer 5 at both ends of the drum 4 is prone to displacement. The density of the fastener 1 can be appropriately increased to form a dense fastener area 3, while the density of the fastener 1 can be appropriately reduced in the central area of ​​the belt layer 5 to form a sparse fastener area 2, so as to avoid the high density affecting the uniform bonding of the belt layer 5.

[0025] In detail, the spacing between the fixing parts 1 in the middle of the drum plate 4 is 40~50mm; the spacing between the fixing parts 1 at the ends of the drum plate 4 is 60~70mm.

[0026] Furthermore, the material of the fastener 1 is selected as a material with moderate hardness (such as medium-hardness steel or alloy), preferably 45 steel; the outer surface of the fastener 1 is coated with polytetrafluoroethylene coating; in subsequent processes, corresponding modified fillers (silicon dioxide, boron nitride, etc.) can also be added to optimize performance, but since it involves material improvement, it is only mentioned here.

[0027] As attached Figure 6 As shown, as one method of installing the fastener 1, the outer surface of the drum plate 4 is provided with an inlay groove 41, and the fastener 1 is fixed in the inlay groove 41. Specifically, the fastener 1 can be interference-fitted with the inlay groove 41 and installed by a special tool; the fastener 1 can also be welded to the inlay groove 41 and the weld is cut off when replacing it.

[0028] As attached Figure 7 As shown, as another embodiment of the mounting fastener 1, the drum plate 4 includes a main plate 42 and a split plate 43 that engages with the main plate 42. All fasteners 1 are fixed on the same split plate 43. At least two screws 44 are fixed to the bottom of the main plate 42. The split plate 43 is provided with mounting holes 45 that match the number and position of the screws 44, so that the screws 44 pass through the mounting holes 45 and are locked and limited by nuts, thereby fixing the main plate 42 and the split plate 43. Fasteners 1 of different heights can be replaced by replacing different split plates 43.

[0029] Furthermore, the fixed connection on the surface of the drum plate 4 also includes a magnet 6 of the prior art, that is, the fastener 1 of this application is used as a structure for strengthening the fixation relative to the prior art.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A belt layer positioning structure for a belt layer drum, comprising a belt layer drum, wherein a plurality of drum plates (4) are fixed in a circumferential array on the belt layer drum, and the drum plates (4) are provided with a fixing structure for fixing the belt layer (5), characterized in that: The fixing structure includes a fastener (1) fixed to the outer surface of the drum plate (4), and a spike structure is formed on the top of the fastener (1); the fixed belt layer (5) includes a steel wire layer (51) and a rubber layer (52) covering the outside of the steel wire layer (51); so that the spike structure penetrates the rubber layer (52) to fix the belt layer (5).

2. The belt layer positioning structure of a belt layer drum as described in claim 1, characterized in that: The distance from the top of the spike structure to the outer surface of the drum plate (4) is x, and the thickness of the rubber layer (52) on the side of the wire layer (51) is y, 0.7y≤x≤0.9y.

3. The belt layer positioning structure of a belt layer drum as described in claim 2, characterized in that: x is 3~5mm.

4. The belt layer positioning structure of a belt layer drum as described in claim 1, characterized in that: Fixing members (1) are set along the width direction of the drum plate (4) to form a set of fixing members (1). In the set of fixing members (1), the distance between adjacent fixing members (1) gradually decreases from the middle of the drum plate (4) to both ends of the drum plate (4).

5. The belt layer positioning structure of a belt layer drum as described in claim 4, characterized in that: The spacing between the fixing parts (1) in the middle of the drum plate (4) is 40~50mm; the spacing between the fixing parts (1) at the end of the drum plate (4) is 60~70mm.

6. The belt layer positioning structure of a belt layer drum as described in claim 1, characterized in that: The fastener (1) is made of 45 steel.

7. The belt layer positioning structure of a belt layer drum as described in claim 1, characterized in that: The outer surface of the fastener (1) is coated with a polytetrafluoroethylene coating.

8. The belt layer positioning structure of a belt layer drum as described in claim 1, characterized in that: The outer surface of the drum plate (4) is provided with an inlay groove (41), and the fastener (1) is fixed in the inlay groove (41).

9. The belt layer positioning structure of a belt layer drum as described in claim 1, characterized in that: The drum plate (4) includes a main plate (42) and a split plate (43) that is snapped into the main plate (42). The fastener (1) is fixed on the split plate (43). A screw (44) is fixed at the bottom of the main plate (42). The split plate (43) is provided with a mounting hole (45) that mates with the screw (44).

10. The belt layer positioning structure of a belt layer drum as described in claim 1, characterized in that: A magnet (6) is fixed to the surface of the drum plate (4).

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