Six-axis servo-linked double-sided splicing equipment for steel wire cord fabric cutting

Abstract

This utility model discloses a six-axis servo-linked double-sided splicing device for steel wire cord fabric cutting, including an unloading conveyor belt and a feeding conveyor belt located before and after the automatic splicing device. The automatic splicing device includes upper and lower bevel gear sets, each bevel gear set including meshing bevel gears. Each bevel gear set is installed on a corresponding splicing angle adjustment mechanism and is controlled to rise or fall by a corresponding cylinder. Each splicing angle adjustment mechanism is installed on a corresponding moving frame, and each moving frame is installed on a corresponding linear guide rail. The upper and lower moving frames move synchronously to the left and right under the drive of the upper and lower synchronous belt pulley transmission pairs. The feeding conveyor belt includes multiple conveyor belts, and rollers with equal front and rear intervals are provided between adjacent conveyor belts. Each roller can rise or fall independently under control. After the splicing angle adjustment mechanism completes the splicing angle adjustment, the servo unit of the control system controls the six-axis linkage to achieve automatic double-sided splicing.

Description

Technical Field

[0001] This utility model relates to tire production line equipment, specifically a six-axis servo linkage double-sided splicing device for steel cord fabric cutting. Background Technology

[0002] Steel cord fabric refers to tire components that have rubber covering steel cords.

[0003] On the tire cord calendering machine, steel cords are covered with rubber to form steel cord fabric rolls. The steel cord fabric rolls are then cut into fabric sheets at different angles and widths on the steel cord fabric cutting machine. The fabric sheets are parallelograms with a certain angle and width. In order to achieve the continuity of tire forming, a splicing device is designed on the steel cord fabric cutting machine. The splicing device connects the cut fabric sheets end to end in a direction parallel to the steel wires (splicing), and then rolls them up for use by the forming machine.

[0004] Before splicing, the fabric consists of two parts: a pre-spliced ​​long fabric and a single piece of fabric to be spliced. During the splicing process, the long fabric on the unloading conveyor belt waits, while the feeding conveyor belt brings the head of the single piece of fabric over and aligns it with the tail of the long fabric. Then, the splicing wheels of the splicing device squeeze the two pieces of fabric together. After that, the unloading conveyor belt sends the spliced ​​fabric out, leaving the tail at the splicing position, waiting for the feeding conveyor belt to bring the next piece of fabric.

[0005] Both the feeding conveyor belt and the unloading conveyor belt are rectangular. The long curtain stops on the unloading conveyor belt, and the tail of the long curtain stops on the feeding conveyor belt. A single piece of curtain is fed from the feeding conveyor belt. When the feeding conveyor belt stops, the head of the single piece of curtain is positioned at the tail of the long curtain.

[0006] Due to the large width and long diagonal side of the steel cord belt layer in engineering tires and giant tires (maximum width 1350mm, diagonal side length reaches 5215mm at 15° angle), the sharp corners of the triangular area may not be properly delivered, and the splicing wheels may not be able to squeeze the two sides of the cord, which may lead to splicing failure.

[0007] Furthermore, the steel cord belt layer of engineering tires and giant tires is thicker than that of all-steel radial tires (up to 8mm). Conventional single-sided passive splicing results in poor splicing quality, insufficient adhesion of the cord at the joint, and easy tearing. Utility Model Content

[0008] This utility model proposes a six-axis servo linkage double-sided splicing device for steel wire cord fabric cutting. The technical problems to be solved are: ① solving the problem of inadequate feeding in the triangular area when splicing the belt layer; ② solving the problem of insufficient adhesive force at the splice position of the belt layer, which makes it easy to tear, thereby improving the accuracy and quality of the splice.

[0009] A six-axis servo-linked double-sided splicing equipment for steel wire cord fabric cutting that can solve existing technical problems includes a discharge conveyor belt and a feeding conveyor belt located before and after the automatic splicing device. The cord fabric is conveyed from the feeding conveyor belt to the discharge conveyor belt, wherein:

[0010] 1. The automatic splicing device includes upper and lower bevel gear sets, each bevel gear set including two meshing bevel gears, each bevel gear set is installed on a corresponding splicing angle adjustment mechanism and is controlled to rise or fall by a corresponding cylinder, each splicing angle adjustment mechanism is installed on a corresponding moving frame, and the upper and lower moving frames move synchronously to the left and right under the drive of the upper and lower synchronous belt pulley transmission pairs.

[0011] 2. The feeding conveyor belt includes multiple conveyor belts, and rollers with equal front and rear intervals are provided between adjacent conveyor belts. Each roller can be raised or lowered independently under control.

[0012] 3. After the splicing angle adjustment mechanism adjusts the splicing angle according to the fabric cutting specifications, the control system controls the servo linkage of the six axes to achieve automatic double-sided splicing:

[0013] One axis consists of multiple conveyor belts operating synchronously.

[0014] The second shaft is an unloading conveyor belt that runs synchronously with multiple conveyor belts.

[0015] The three-axis and four-axis operate the upper and lower bevel gear sets, respectively.

[0016] The five-axis and six-axis are the upper and lower moving frames that coordinate with the fabric conveyor.

[0017] Further settings:

[0018] 1. The lower bevel gear set has ball bearing support plates on the left and right sides respectively, which are connected to the front and rear conveyor belts.

[0019] 2. To assist in the positioning of the curtain fabric, a curtain fabric fixing mechanism I is provided on the left side of each conveyor belt along the forward conveying direction of the curtain fabric, and a curtain fabric fixing mechanism II, which can be adjusted to the left and right, is provided on the right side of the curtain fabric fixing mechanism I close to the conveyor belt.

[0020] Further settings:

[0021] The automatic splicing device, as well as the feeding conveyor belt and the unloading conveyor belt, are installed on a platform whose position can be adjusted left and right under servo drive.

[0022] The beneficial effects of this utility model are:

[0023] 1. This utility model of steel wire cord fabric cutting machine with six-axis servo linkage double-sided splicing equipment is suitable for splicing of giant tire belt layers. By setting the edge of the belt layer far from the cutting baseline as the splicing baseline, the tail of the belt layer waiting to be spliced ​​is placed on multiple conveyor belts before splicing. The curtain fabric and the conveyor belt are isolated as needed by the liftable roller group. The conveyor belt continues to the next belt layer until the head is aligned with the tail of the waiting curtain fabric. Therefore, there is no unpowered conveying section, which solves the problem of the wide belt layer not being delivered to the correct position.

[0024] 2. This utility model adopts an active pressing structure of upper and lower bevel gear sets, which solves the problems of insufficient adhesive force of the curtain fabric and weak splicing at the joint position.

[0025] 3. In the structure of this utility model, each conveyor belt is provided with a left and right curtain edge fixing mechanism, which improves the joint docking accuracy and quality.

[0026] 4. In the structure of this utility model, the feeding conveyor belt adopts multiple belts and rollers that can be raised and lowered are set between the multiple belts. The rollers are arranged at a certain angle and automatically rise according to the angle of the curtain to isolate the curtain from the running conveyor belt, so as to avoid the running conveyor belt from driving the curtain at the waiting position, causing unstable joint quality, and at the same time avoiding the reduction of curtain adhesion caused by relative movement friction between the conveyor belt and the curtain surface.

[0027] 5. In the structure of this utility model, each moving part is driven by a servo motor, which makes it easy to realize the synchronous operation of each mechanism and achieve fully automatic splicing. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0029] Figure 2 for Figure 1 Top view.

[0030] Figure 3 for Figure 1 A schematic diagram of the feeding conveyor belt in the implementation method.

[0031] Figure 4 for Figure 1 A schematic diagram of the automatic splicing device in the implementation method.

[0032] Figure 5 for Figure 1 A schematic diagram illustrating the implementation method.

[0033] Drawing number markings: 1. Unloading conveyor belt; 2. Feeding conveyor belt; 2-1. Conveyor belt body; 2-2. Roller; 3. Automatic splicing device; 3-1. Bevel gear; 3-2. Splicing angle adjustment mechanism; 3-3. Moving frame; 3-4. Cylinder; 3-5. Frame; 3-6. Linear guide rail; 3-7. Synchronous belt pulley transmission pair; 4. Ball bearing support plate; 5. Curtain edge fixing mechanism I; 6. Curtain edge fixing mechanism II; 7. Platform; 8. Screw pair; 9. Front curtain; 10. Rear curtain; 11. Cutting baseline; 12. Splicing baseline; 13. Sewing line. Detailed Implementation

[0034] The technical solution of this utility model will be further described below with reference to the embodiments shown in the accompanying drawings.

[0035] This utility model relates to a six-axis servo-driven double-sided splicing device for cutting steel wire cord fabric. It includes an automatic splicing device 3 located in the middle of a platform 7 (servo-driven, adjustable for left and right, i.e., Y-axis movement). A discharge conveyor belt 1 is located at the front of the automatic splicing device 3, and is mounted to the front of the platform 7 via front and rear screw pairs 8 (the screw pairs 8 allow for fine-tuning of the conveyor belt's height, position, and left / right). A feeding conveyor belt 2 is located at the rear of the automatic splicing device 3, and is mounted to the rear of the platform 7 via front and rear screw pairs 8 (allowing for fine-tuning of the conveyor belt's height, position, and left / right). The forward conveying direction (X-axis) of the cord fabric is from the feeding conveyor belt 2 to the discharge conveyor belt 1. Figure 1 , Figure 2 As shown.

[0036] The automatic splicing device 3 includes a frame 3-5 mounted on a platform 7. The frame 3-5 contains left and right horizontal ball bearing supports 4, which respectively engage with the unloading conveyor belt 1 and the feeding conveyor belt 2. Upper and lower bevel gear sets (based on corresponding gearboxes) are positioned between the left and right ball bearing supports 4. Each bevel gear set (as a splicing wheel) includes two meshing bevel gears 3-1. The upper gearbox is mounted on an upper splicing angle adjustment mechanism 3-2 and is controlled to rise or fall by parallel-arranged cylinders 3-4. The upper splicing angle adjustment mechanism 3-2 is mounted on an upper movable frame 3-3, which is mounted on an upper linear guide rail 3-6. (Left and right directions) The upper linear guide 3-6 is mounted on the top of the frame 3-5; the lower gearbox is mounted on the lower splicing angle adjustment mechanism 3-2 and is controlled to rise or fall by parallel cylinders 3-4. The lower splicing angle adjustment mechanism 3-2 is mounted on the lower movable frame 3-3, which is mounted on the lower linear guide 3-6 (left and right directions). The lower linear guide 3-6 is mounted on the bottom of the frame 3-5. The left and right horizontal ball bearing plates 4 are mounted on the lower movable frame 3-3. The upper and lower movable frames 3-3 are driven by servo-driven and synchronously operating upper and lower synchronous belt pulley transmission pairs 3-7, moving synchronously in the left and right (Y direction). Figure 1 , Figure 2 , Figure 4 As shown.

[0037] The feeding conveyor belt 2 includes multiple servo-driven and synchronously operating conveyor belts 2-1. Adjacent conveyor belts 2-1 are spaced at equal front and rear intervals, and each roller 2-2 can be independently raised or lowered. Along the forward conveying direction of the fabric, the left edge of the feeding conveyor belt 2 is equipped with a fabric edge-fixing mechanism I5 (near the automatic splicing device 3). The front right side of the fabric edge-fixing mechanism I5, close to the conveyor belt, is equipped with a fabric edge-fixing mechanism II6 that can be adjusted left and right. Figure 3 As shown.

[0038] The unloading conveyor belt 1 includes a servo-driven integral conveyor belt. Along the forward conveying direction of the fabric, a fabric edge-fixing mechanism I5 (near the automatic splicing device 3) is provided on the left edge of the unloading conveyor belt 1. A fabric edge-fixing mechanism II6, adjustable to the left and right, is provided on the right rear side of the fabric edge-fixing mechanism I5, close to the conveyor belt. Figure 2 As shown.

[0039] like Figure 5 As shown, the operating mode of this utility model is as follows:

[0040] 1. Adjust the position of platform 7 according to the production formula parameters (curtain cutting angle and width) so that the distance between the cutting baseline 11 and the splicing baseline 12 matches the width of the curtain. The upper and lower splicing angle adjustment mechanisms 3-2 automatically adjust so that the angle of the upper and lower bevel gear sets matches (is consistent) the cutting angle of the curtain. Adjust the curtain edge fixing mechanism I5 and curtain edge fixing mechanism II6 on both sides of the front and rear conveyor belts to ensure the curtain conveying accuracy.

[0041] 2. The feeding conveyor belt 2 and the unloading conveyor belt 1 operate synchronously to transport the first sheet of fabric (front fabric 9) to the splicing waiting position. At the splicing waiting position, the front part of the front fabric 9 stays on the unloading conveyor belt 1, while the rear part of the front fabric 9 stays on the feeding conveyor belt 2. The diagonal edge of the tail of the front fabric 9 is aligned with the stitching line 13. The ball bearing support plate 4 supports the front fabric 9 between the front and rear conveyor belts.

[0042] 3. Raise all the rollers 2-2 below the rear of the front curtain 9 on the feeding conveyor belt 2 to isolate the front curtain 9 from the conveyor belt.

[0043] 4. The feeding conveyor belt 2 runs and transports the head oblique edge of the secondary curtain (rear curtain 10) to the sewing line 13 to connect with the tail oblique edge of the front curtain 9.

[0044] 5. All rollers 2-2 at the rear of the front curtain 9 descend to lower the curtain onto the conveyor belt.

[0045] 6. The upper and lower bevel gear sets (in the initial position, i.e., the intersection of the stitching line 13 and the splicing reference line 12) move towards each other and clamp the left ends of the two pieces of curtain fabric to be spliced.

[0046] 7. Under the control of the servo system, the feeding conveyor belt 2 and the unloading conveyor belt 1 operate synchronously to transport the front curtain 9 and the rear curtain 10 forward. At the same time, the upper and lower bevel gear sets roll against each other and the upper and lower moving frames 3-3 move synchronously from left to right. The six axes are linked together to automatically complete the splicing.

[0047] 8. After the upper and lower bevel gear sets (at the end position) are sewn together, the upper and lower bevel gear sets are separated. The upper and lower moving frames 3-3 move from right to left, driving the upper and lower bevel gear sets back to their original positions. The feeding conveyor belt 2 and the unloading conveyor belt 1 work together to unload the two pieces of fabric that have been spliced ​​forward to the splicing waiting position. The tail edge of the rear fabric 10 is at the sewing line 13. All the rollers 2-2 below the tail of the rear fabric 10 on the feeding conveyor belt 2 are raised to separate the fabric from the conveyor belt.

[0048] 9. Repeat steps 4 to 8 to automatically complete the continuous splicing of the curtain fabric.

[0049] This invention is particularly suitable for splicing the belt layers of engineering tires and giant tires. It can solve the problems caused by the large width and long diagonal side of the steel cord belt layer of engineering tires and giant tires (maximum width 1350mm, diagonal side length reaches 5215mm at 15°), which may result in the sharp corners of the triangular area not being delivered properly, the splicing wheels not being able to squeeze the two sides of the curtain, and the possibility of splicing failure. It also addresses the problems of the steel cord belt layer of engineering tires and giant tires being thick (up to 8mm), which may lead to poor splicing quality, insufficient adhesion of the curtain at the joint position, and easy tearing due to conventional single-sided passive splicing.

[0050] As described above, this embodiment, in conjunction with the accompanying drawings, is only a preferred example of the present invention; those skilled in the art can be inspired by it and directly deduce other alternative structures that conform to the design concept of the present invention, and the structural features obtained therefrom should also belong to the solution described in the present invention.

Claims

1. A six-axis servo-linked double-sided splicing equipment for cutting steel wire cord fabric, characterized in that... Includes an unloading conveyor belt (1) and a feeding conveyor belt (2) located before and after the automatic splicing device (3). The curtain fabric is conveyed from the feeding conveyor belt (2) to the unloading conveyor belt (1), wherein: The automatic splicing device (3) includes upper and lower bevel gear sets. Each bevel gear set includes two meshing bevel gears (3-1). Each bevel gear set is installed on a corresponding splicing angle adjustment mechanism (3-2) and is controlled to rise or fall by a corresponding cylinder (3-4). Each splicing angle adjustment mechanism (3-2) is installed on a corresponding moving frame (3-3). Each moving frame (3-3) is installed on a corresponding linear guide rail (3-6). The upper and lower moving frames (3-3) move synchronously to the left and right under the drive of the upper and lower synchronous belt pulley transmission pairs (3-7). The feeding conveyor belt (2) includes multiple conveyor belts (2-1), and rollers (2-2) are provided between adjacent conveyor belts (2-1) at equal intervals in front and behind. Each roller (2-2) can be controlled to rise or fall independently. After the splicing angle adjustment mechanism (3-2) adjusts the splicing angle according to the fabric cutting specifications, the control system controls the servo linkage of the six axes to achieve automatic double-sided splicing. One shaft consists of multiple conveyor belts operating synchronously (2-1); The second shaft is an unloading conveyor belt (1) that runs synchronously with multiple conveyor belts (2-1); The three-axis and four-axis operate with upper and lower bevel gear sets, respectively; The five-axis and six-axis are the upper and lower moving frames (3-3) that coordinate with the fabric conveying.

2. The six-axis servo-linked double-sided splicing equipment for steel wire cord fabric cutting as described in claim 1, characterized in that: The lower bevel gear set has ball bearing support plates (4) on its left and right sides respectively, which are connected to the front and rear conveyor belts; Along the forward conveying direction of the curtain, each conveyor belt has a curtain edge fixing mechanism I (5) on the left side, and a curtain edge fixing mechanism II (6) that can be adjusted to the left and right is provided close to the conveyor belt on the right side of the curtain edge fixing mechanism I (5).

3. The six-axis servo-linked double-sided splicing equipment for steel wire cord fabric cutting as described in claim 2, characterized in that: The automatic splicing device (3), unloading conveyor belt (1), and feeding conveyor belt (2) are installed on a platform (7) whose position can be adjusted left and right under servo drive.

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