A roller bender for elastic bands

Abstract

A kind of roller bending machine of elastic band sleeve, it is related to arc-shaped roller bed technical field, including arc-shaped mounting bracket, several driving roller and driven roller mounted on the arc-shaped mounting bracket;Wherein, the driving roller is used to drive the driven roller operation, it is characterized in that, still include: several elastic bands, each the elastic band is wound on one driving roller and at least two driven roller, wherein the driving roller is configured as driving source;The elastic band is tensioned and guided by enveloping the driving roller and at least two driven roller, and it is collectively constituted corner conveying structure;The utility model effectively eliminates the problem that the article skids and stays due to insufficient frictional traction of traditional rigid roller, so as to significantly improve its conveying adaptability and operation reliability to complex shape article on the basis of completely retaining the original bending turning function of equipment.

Description

Technical Field

[0001] This utility model relates to the field of curved roller conveyor technology, and in particular to a roller bending machine with an elastic belt. Background Technology

[0002] Roller bending machines are key equipment in modern logistics conveyor systems, widely used in airport baggage sorting, e-commerce warehousing, factory production lines, and other applications requiring the redirection and transport of materials or packages. Their core function is to smoothly change the transport direction of items along a pre-set curved path using continuously rotating rollers. These devices need to efficiently and smoothly transport items of various sizes and weights within limited space, especially preventing small items from jamming, misaligning, breaking, or veering off the conveyor line, while maintaining low energy consumption and maintenance costs. With the increasing demands for logistics efficiency, higher requirements are being placed on the reliability, adaptability, and compactness of roller bending machines.

[0003] In the prior art, Chinese utility model patent with patent number 202222044903.2 mentions a circular belt bending roller machine, including an arc-shaped mounting frame, a power roller, and a driven roller. The power roller and the driven roller are rotatably mounted on the arc-shaped mounting frame, and the driven roller is connected to the power roller. The power roller transmits power to the driven roller, which facilitates the movement and transportation of items on this roller machine. Adjacent driven rollers or between the power roller and the driven roller form a roller gap. A non-powered roller is installed in the roller gap to fill the roller gap. Since the non-powered roller can rotate relative to the other roller, when a small item moves to the roller gap, there is rolling friction between the item and the non-powered roller, thereby preventing the item from being damaged or jammed in the roller gap.

[0004] However, in this technology, there are still a significant number of gaps between the powered rollers, driven rollers, and unpowered rollers that constitute the main conveying surface. This increases the likelihood of the following issues during transport: insufficient frictional traction when the rigid roller surface is in direct contact with the item, which can easily cause irregularly shaped items or small, lightweight items (such as medicine boxes) to slip and become stuck between the rollers; at the same time, the line-contact rollers are unable to provide stable support for small, easily rolling parts or irregularly shaped objects that require full contact support, and can transmit vibrations that could damage precision parts, severely restricting the reliability and applicability of the equipment. Utility Model Content

[0005] The present invention aims to solve the technical problem of existing roller bending machines where the rigid roller's main conveying surface lacks sufficient frictional traction, causing items to slip and become stuck, and transmitting operational vibrations.

[0006] To achieve the above objectives, according to one aspect of the utility model, a roller bending machine with elastic belts is provided, comprising an arc-shaped mounting frame, a plurality of active rollers and driven rollers mounted on the arc-shaped mounting frame; wherein the active rollers are used to drive the driven rollers to rotate, characterized in that it further comprises: a plurality of elastic belts, each elastic belt being wound around one of the active rollers and at least two of the driven rollers, wherein the active rollers are configured as drive sources; the elastic belts, by enveloping the active rollers and being tensioned and guided by at least two of the driven rollers, together constitute a cornering transmission structure.

[0007] As a preferred embodiment of the above technical solution, the elastic band is an annular elastic element. The inner perimeter length of the elastic band is preset to be less than the outer perimeter length to adapt to the path curvature change under the turning angle of the curve. Furthermore, the elastic band is sleeved on the driving roller and the driven roller to form a circulating transmission surface.

[0008] The inner periphery of the elastic band mentioned above refers to the total length of the inner edge of the elastic band after it is unfolded; the outer periphery of the elastic band refers to the total length of the outer edge of the elastic band after it is unfolded.

[0009] As a preferred embodiment of the above technical solution, a first unpowered transition roller is provided between each segment of the corner conveyor structure.

[0010] As a preferred embodiment of the above technical solution, a second unpowered transition roller is provided between the driving roller and the driven roller, and between adjacent driven rollers, within the corner conveying structure.

[0011] As a preferred embodiment of the above technical solution, in the corner conveying structure, both the driving roller and the driven roller are provided with two grooves at their ends near the inner side of the curve; the two ends of the O-shaped tensioning belt that spans between the driving roller and the driven roller, and between adjacent driven rollers, are respectively embedded in the grooves at the ends of the corresponding driving roller or driven roller.

[0012] As a preferred embodiment of the above technical solution, a correction sleeve made of thermoplastic material is fixedly fitted on the driven roller used for tensioning and guiding the elastic band, located within the width coverage area of ​​the elastic band and near its two side edges in the width direction.

[0013] As a preferred embodiment of the above technical solution, the driving roller and the driven roller are tapered rollers, and the elastic band has a preset inner transition distance that is smaller than the outer transition distance.

[0014] As a preferred embodiment of the above technical solution, the configuration of each segment of the corner transmission structure causes the curve machine to produce a 30° angular deflection in the corresponding transmission path.

[0015] As a preferred embodiment of the above technical solution, it also includes a bend baffle, which is disposed on the arc-shaped mounting frame on both sides of the corner conveying structure, and the side of the bend baffle away from the corner conveying structure is provided with several reinforcing ribs.

[0016] As a preferred embodiment of the above technical solution, a curved transparent sealing plate is also included, which is disposed on the arc-shaped mounting frame below the corner conveying structure.

[0017] In summary, this utility model has the following advantages:

[0018] 1. This utility model effectively eliminates the problem of slippage and stagnation of items caused by insufficient frictional traction of traditional rigid rollers, thereby significantly improving its adaptability to conveying complex-shaped items and operational reliability while fully retaining the original turning function of the equipment.

[0019] 2. Furthermore, the large-angle steering is decomposed into multiple continuous 30° corner transmission structures, which significantly reduces the manufacturing precision requirements of a single fan-shaped elastic belt and the complexity of adapting to curves.

[0020] 3. Furthermore, by setting a first unpowered transition roller between each corner conveyor structure and a second unpowered transition roller between the active roller and the driven roller inside each structure and between adjacent driven rollers, the support gap is effectively filled and the overall rigidity of the structure is enhanced.

[0021] Further or other beneficial effects will be discussed in the embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the curve machine of this utility model;

[0023] Figure 2 This is a schematic diagram of the corner conveyor structure of this utility model;

[0024] Figure 3 A schematic diagram showing the arrangement of two adjacent corner conveyor structures of this utility model;

[0025] Figure 4 This is a schematic diagram of the elastic band structure of this utility model;

[0026] Figure 5 This is a front view of the elastic band of this utility model;

[0027] Figure 6 This is a schematic diagram of the assembly of the correction sleeve and the driven roller of this utility model;

[0028] Figure 7 This is a schematic diagram of the bottom structure of the curve machine of this utility model;

[0029] Among them, 1-arc mounting frame, 2-active roller, 3-driven roller, 4-elastic belt, 234-corner conveyor structure, 5-first unpowered transition roller, 6-second unpowered transition roller, 7-correction sleeve, 11-curved baffle, 111-reinforcing rib, 12-curved transparent sealing plate, a-groove and b-tensioning belt. Detailed Implementation

[0030] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0031] The present invention will be further explained below with reference to the embodiments:

[0032] Example:

[0033] A roller bending machine with an elastic belt, as shown in the reference. Figure 1 and Figure 2 The roller bending machine includes an arc-shaped mounting frame 1, multiple active rollers 2 and multiple driven rollers 3 mounted on the arc-shaped mounting frame 1. The active rollers 2 are used to drive the driven rollers 3 to rotate. Each active roller 2 is equipped with an external drive power supply. The roller bending machine also includes multiple elastic belts 4. Each elastic belt 4 is wound around an active roller and at least two driven rollers 3. The active roller 2 acts as a drive roller and drives itself and the driven rollers 3 to rotate. The elastic belts 4 wrap around the active roller 2 and are tensioned and guided by at least two driven rollers 3, together forming a corner conveying structure 234. In other words, a corner transmission structure includes at least one driving roller 2, one elastic belt 4, and two driven rollers 3, with the two driven rollers 3 positioned on both sides of the driving roller 2, and the driven rollers 3 on both sides tensioning the elastic belt 4. In this embodiment, preferably, each corner transmission structure 234 includes one driving roller 2 and five driven rollers 3, for a total of 6 rollers. The driving roller 2 is located in the third or fourth position in the linear sequence of the transmission path, ensuring that the driving roller 2 is in the middle position of the entire roller group, thus ensuring that the driving roller 2 can transmit power to each driven roller 3 more efficiently.

[0034] Reference Figure 1 and Figure 7The bending machine also includes a bending baffle 11 and a bending transparent sealing plate 12. The bending baffle 11 is disposed on the arc-shaped mounting frame 1 on both sides of the corner conveyor structure 234 to prevent objects on the bending machine from falling from the side. In addition, to strengthen the bending baffle 11, multiple reinforcing ribs 111 are provided on the side away from the corner conveyor structure 234. The bending transparent sealing plate 12 is disposed on the arc-shaped mounting frame 1 below the corner conveyor structure 234 to capture small objects that fall. Due to its transparent nature, small objects on it are easily observed.

[0035] In this embodiment, an elastic belt 4 is added to the structure of the bending machine, which can effectively avoid the negative impact caused by gaps during roller transportation.

[0036] Under the above configuration, where each segment of the corner transmission structure causes a 30° angular deflection in the corresponding transmission path of the bending machine, a 90° or 180° corner transition is generally required for conveyor setups in logistics plants. In other words, taking the corner transmission structure 234 of this embodiment as an example, when configuring a 90° corner, three consecutive corner transmission structures 234 are needed on each bending machine; when configuring a 180° corner, six connected corner transmission structures 234 are needed on each bending machine. This segmented corner structure minimizes the requirements for the elastic belt 4.

[0037] The elastic band 4 in this embodiment is somewhat special because it needs to adapt to curves. Therefore, as a ring-shaped elastic element, the inner perimeter of the elastic band 4 is pre-designed to be shorter than the outer perimeter to accommodate changes in path curvature at the turning angle of the curve. The elastic band 4 is sleeved on the driving roller 2 and the driven roller 3 to form a circulating transmission surface, as shown in the reference. Figure 4 The inner perimeter of the elastic band 4 mentioned above refers to the total length of the inner edge of the elastic band 4 after it is unfolded. Similarly, the outer perimeter refers to the total length of the outer edge of the elastic band 4 after it is unfolded. In other words, when viewed from above, the elastic band 4 has a fan-shaped structure. Additionally, refer to... Figure 5 Based on this, since both the driving roller 2 and the driven roller 3 are conical rollers (bending machines generally use conical rollers), the inner transition distance of the elastic belt 4 is preset to be smaller than the outer transition distance (in a conveyor belt system, when the belt is wound around two rollers and forms two parallel belt segments, the vertical distance between these two belt segments is usually called the transition distance). Based on the requirements of the above two structures, and given that the irregular structural features of the elastic belt 4 are significantly different from those of traditional transmission belts, its customized production has inherent process complexity. In order to overcome the multi-dimensional constraints of material selection, cross-sectional profile design, and assembly debugging, this solution decomposes the 90° bend deflection into a three-segment structure, significantly reducing the manufacturing precision threshold and debugging difficulty of the elastic belt 4.

[0038] Reference Figure 2 and Figure 3 To fill the gaps between adjacent corner conveyor structures 234, a first unpowered transition roller 5 is provided between each corner conveyor structure 234. In addition, a second unpowered transition roller 6 is provided between the driving roller 2 and the driven roller 3, and between adjacent driven rollers 3, within the corner conveyor structure 234; the second unpowered transition roller 6 can enhance the strength of the entire corner conveyor structure 234, thereby suppressing the vibration of the elastic belt 4 to a certain extent.

[0039] Regarding the transmission in this embodiment, within the corner conveying structure 234, both the driving roller 2 and the driven roller 3 have two grooves a at their ends near the inner side of the curve; the two ends of the O-shaped tensioning belt b, which spans between the driving roller 2 and the driven roller 3, and between adjacent driven rollers 3, are respectively embedded in the grooves a at the ends of the corresponding driving roller 2 or driven roller 3. Note that in this embodiment, the roller ends are made of metal rather than plastic, resulting in higher structural strength.

[0040] On the driven roller 3 that tensions and guides the elastic belt 4, specifically on the outermost driven roller 3 of the corner conveyor structure 234, a correction sleeve 7 made of thermoplastic material is fixedly fitted on each of the two sides within the width coverage area of ​​the elastic belt 4 and near its width direction. Before installing the elastic belt 4, a correction sleeve 7 is installed to pre-tighten the elastic belt 4 and prevent deviation. During installation, it is slipped onto the tapered driven roller 3 from the smaller end. After being fitted into the predetermined position, it is heated with a hot air gun and then locked. During on-site installation, glue is applied to ensure the correction sleeve 7 does not fall off and to fix it in place.

[0041] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0042] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A roller bending machine with an elastic band, comprising an arc-shaped mounting frame (1), a plurality of driving rollers (2) and driven rollers (3) mounted on the arc-shaped mounting frame (1); wherein, The active roller (2) is used to drive the driven roller (3) to operate. It is characterized in that it further includes: a plurality of elastic belts (4), each of the elastic belts (4) being wound around one of the active rollers (2) and at least two of the driven rollers (3), wherein the active roller (2) is configured as a drive source; the elastic belts (4) together form a corner conveying structure (234) by enveloping the active roller (2) and being tensioned and guided by at least two of the driven rollers (3).

2. The roller bending machine with elastic belt (4) according to claim 1, characterized in that, The elastic band (4) is an annular elastic element. The inner perimeter of the elastic band (4) is preset to be shorter than the outer perimeter to adapt to the path curvature change under the turning angle of the curve. The elastic band (4) is sleeved on the active roller (2) and the driven roller (3) to form a circulating transmission surface.

3. A roller bending machine with an elastic belt (4) according to claim 1, characterized in that, A first unpowered transition roller (5) is provided between each segment of the corner conveyor structure (234).

4. A roller bending machine with an elastic belt (4) according to claim 1, characterized in that, Within the corner conveying structure (234), a second unpowered transition roller (6) is provided between the driving roller (2) and the driven roller (3), and between adjacent driven rollers (3).

5. A roller bending machine with an elastic belt (4) according to claim 1, characterized in that, Within the corner conveyor structure (234), both the drive roller (2) and the driven roller (3) are provided with two grooves (a) at their ends near the inside of the curve; the two ends of the O-shaped tensioning belt (b) spanning between the drive roller (2) and the driven roller (3) and between adjacent driven rollers (3) are respectively embedded in the grooves (a) at the ends of the corresponding drive roller (2) or driven roller (3).

6. A roller bending machine with an elastic belt (4) according to claim 1, characterized in that, On the driven roller (3) used for tensioning and guiding the elastic band (4), a correction sleeve (7) made of thermoplastic material is fixedly sleeved on both sides of the elastic band (4) within the width coverage area and near its width direction.

7. A roller bending machine with an elastic belt (4) according to claim 2, characterized in that, The active roller (2) and the driven roller (3) are tapered rollers, and the elastic band (4) has a preset inner transition distance that is smaller than the outer transition distance.

8. A roller bending machine with an elastic belt (4) according to claim 1, characterized in that, The configuration of each segment of the cornering transmission structure (234) causes the curve machine to produce a 30° angular deflection in the corresponding transmission path.

9. A roller bending machine with an elastic belt (4) according to claim 1, characterized in that, It also includes a bend baffle (11), which is disposed on the arc-shaped mounting frame (1) on both sides of the corner conveying structure (234). The bend baffle (11) is provided with several reinforcing ribs (111) on the side away from the corner conveying structure (234).

10. A roller bending machine with an elastic belt (4) according to claim 1, characterized in that, It also includes a curved transparent sealing plate (12), which is disposed on the arc-shaped mounting bracket (1) below the corner conveyor structure (234).

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