Rotary tensioning structure for shielding net cylinder curling machine

Abstract

The utility model relates to a rotary tensioning structure for a shielding net cylinder hemming machine, which belongs to the technical field of shielding net cylinder hemming machines, and comprises a rack, a support frame is arranged on the rack, an infinite rotary cylinder and a net cylinder position adjusting device are arranged on the support frame, a transmission shaft is connected in the infinite rotary cylinder, and the transmission shaft is connected with the transmission shaft. The lower end of the transmission shaft extends out of the lower end of the unlimited rotating air cylinder and is externally connected with a driving source, the driving source drives an expanding piece of the unlimited rotating air cylinder to rotate through the transmission shaft, the expanding piece comprises a chuck and at least two sliding blocks, and the sliding blocks are arranged on the chuck in a sliding mode and close to or away from the center of the chuck. Each sliding block is provided with a tensioning block used for supporting the screen cylinder, the screen cylinder position adjusting device is located below the tensioning blocks, and the rotary tensioning structure for the shielding screen cylinder curling machine is reasonable and simple in structure, convenient to install and capable of achieving the tensioning effect without additionally arranging devices such as a tensioning shaft.

Description

Technical Field

[0001] The utility model belongs to the technical field of shielding net cylinder curling machines, and particularly refers to a rotary tensioning structure for a shielding net cylinder curling machine. Background Art

[0002] The function of a metal shielding net cylinder is to surround the interference sources of components, circuits, cables or the whole system with the metal shielding net cylinder to prevent the interference electromagnetic field from spreading outwards; or to surround the receiving circuit, equipment or system, etc. with the metal shielding net cylinder to prevent them from being affected by the external electromagnetic field. When curling the two ports of the metal shielding net cylinder during the production process, it is necessary to rotate the metal shielding net and prevent it from slipping. There are various curling devices on the market, but their working efficiency is not high and the degree of automation is not high.

[0003] The domestic database discloses a utility model with the patent number 201821349871.4 and the patent name of a rotatable tensioning mechanism for shielding net cylinder curling, which includes a vertical frame. A spreading mechanism is fixedly arranged on the vertical frame. A tensioning mechanism is arranged directly below the spreading mechanism, and a rotating mechanism is arranged below the tensioning mechanism. The spreading mechanism includes a tensioning cylinder vertically and fixedly installed on the vertical frame. The lower end of the piston rod of the tensioning cylinder is provided with a tensioning shaft, which is rotatably connected to the piston rod of the tensioning cylinder. The tensioning cylinder drives the tensioning shaft to move up and down repeatedly. The tensioning shaft is in the shape of a frustum with a larger upper part and a smaller lower part. The tensioning mechanism includes several equally divided tensioning parts and a circular ring fixing part arranged on the rotating mechanism. The upper parts of the several equally divided tensioning parts form a tensioning sleeve, and the lower parts thereof protrude outwards to form a circular limiting boss. Among them, the diameter between the tensioning sleeves is between the diameter of the lower end and the diameter of the upper end of the tensioning shaft. A guide post with a diameter slightly smaller than the inner diameter of the tensioning sleeve is arranged at the center position of the upper end face of the rotating mechanism. The height of the guide post is less than the height of the tensioning sleeve. A chute is arranged along the radial direction on the lower end face of each tensioning part. A guiding and positioning convex strip matching the chute on the lower end face of each tensioning part is arranged along the radial direction on the upper end face of the rotating mechanism. The center of the circular ring fixing part is a stepped hole with a smaller upper part and a larger lower part. The diameter of the small hole in the stepped hole is larger than the outer diameter of the tensioning sleeve and smaller than the outer diameter of the circular limiting boss. The diameter of the large hole in the stepped hole is larger than the outer diameter of the circular limiting boss and smaller than the diameter of the rotating mechanism. The height of the large hole in the stepped hole is slightly larger than the thickness of the circular limiting boss. The circular ring fixing part is fixedly installed on the rotating mechanism. Although the above structure can solve the above technical problems, its structure is relatively complex and inconvenient to install. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotary tensioning structure for a shielding net cylinder curling machine, which has a reasonable and simple structure, is convenient to install, and can achieve the tensioning effect without additionally adding devices such as a tensioning shaft.

[0005] The purpose of the present utility model is achieved as follows:

[0006] A rotary tensioning structure for a shielding net cylinder curling machine, comprising a frame. A support frame is arranged on the frame, and an infinitely rotating cylinder and a net cylinder position adjusting device are arranged on the support frame. A transmission shaft is connected inside the infinitely rotating cylinder. The lower end of the transmission shaft extends out of the lower end of the infinitely rotating cylinder and is externally connected to a driving source. The driving source drives the expanding member of the infinitely rotating cylinder to rotate through the transmission shaft. The expanding member includes a chuck and at least two sliding blocks. The sliding blocks are slidably arranged on the chuck and are close to or away from the central position of the chuck. A swelling block for supporting the net cylinder is arranged on each sliding block. The net cylinder position adjusting device is located below the swelling block, and the net cylinder position adjusting device is used to adjust the position of the net cylinder on the swelling block.

[0007] In the above-mentioned rotary tensioning structure for a shielding net cylinder curling machine, there are three sliding blocks.

[0008] In the above-mentioned rotary tensioning structure for a shielding net cylinder curling machine, a strip-shaped groove is arranged on the outer side of the swelling block.

[0009] In the above-mentioned rotary tensioning structure for a shielding net cylinder curling machine, the net cylinder position adjusting device includes an adjusting plate and adjusting cylinders. There are two adjusting cylinders, which are fixedly connected to the support frame through a fixing plate, and the adjusting plate is fixedly connected to the telescopic rod of the adjusting cylinder through a connecting frame.

[0010] In the above-mentioned rotary tensioning structure for a shielding net cylinder curling machine, the two adjusting cylinders are located at the diagonal positions of the support frame, and a through groove one for the infinitely rotating cylinder to pass through is arranged on the adjusting plate.

[0011] In the above-mentioned rotary tensioning structure for a shielding net cylinder curling machine, the driving source is a motor. On one side of its support frame, the motor shaft of the motor is connected to a speed reducer, and a power output gear shaft is arranged on the speed reducer. The power output gear shaft is connected to the transmission shaft through a synchronous belt.

[0012] In the above-mentioned rotary tensioning structure for a shielding net cylinder curling machine, the support frame includes a left support, a right support and a support plate. Two ends of the support plate are respectively connected to the upper ends of the left support and the right support. A synchronous belt avoidance groove is arranged on the left support, and a through groove two for the transmission shaft to pass through is arranged on the support plate.

[0013] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0014] The utility model uses the expanding part of an infinitely rotating cylinder to expand a shielding mesh cylinder, so that the shielding mesh cylinder is fixed on the expanding part. A transmission shaft for driving the expanding part to rotate is arranged in the infinitely rotating cylinder. The transmission shaft is in transmission connection with a driving source. When the driving source works, it drives the transmission shaft to rotate, and the transmission shaft drives the expanding part to rotate. The expanding part of the infinitely rotating cylinder expands the shielding mesh cylinder, and the shielding mesh cylinder rotates as the expanding part rotates. At the same time, a cylinder position adjusting device is also arranged on the frame. The position of the shielding mesh cylinder on the expanding part can be controlled through the cylinder position adjusting device, which is convenient for the rolling device to roll the cylinder. The structure of the utility model is simple and reasonable. Brief Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of the utility model.

[0016] Figure 2 is an exploded view of the utility model.

[0017] Figure 3 is a structural schematic diagram of the infinitely rotating cylinder of the utility model.

[0018] Figure 4 is a structural schematic diagram of the cylinder position adjusting device of the utility model.

[0019] 1 - Frame; 11 - Support frame; 12 - Infinitely rotating cylinder; 13 - Cylinder position adjusting device;

[0020] 14 - Power output gear shaft; 15 - Synchronous belt; 111 - Left support; 112 - Right support; 113 - Support plate;

[0021] 114 - Synchronous belt avoidance groove; 115 - Second through groove; 121 - Transmission shaft; 122 - Driving source; 123 - Expanding part; 124 - Chuck; 125 - Sliding block; 126 - Expanding block; 127 - Strip-shaped groove; 131 - Adjusting plate; 132 - Adjusting cylinder; 133 - Fixed plate; 134 - Connecting frame; 135 - First through groove. Detailed Embodiment

[0022] The following further describes the utility model with specific embodiments in conjunction with the drawings:

[0023] Such as Figures 1-4As shown: A rotary tensioning structure for a shielding cylinder curling machine, including a frame 1, on which a support frame 11 is provided. An infinitely rotatable cylinder 12 and a cylinder position adjusting device 13 are provided on the support frame 11. A transmission shaft 121 is connected inside the infinitely rotatable cylinder 12. The lower end of the transmission shaft 121 extends out of the lower end of the infinitely rotatable cylinder 12 and is externally connected to a drive source 122. The drive source 122 drives the expansion member 123 of the infinitely rotatable cylinder 12 to rotate through the transmission shaft 121. The expansion member 123 includes a chuck 124 and at least two sliding blocks 125. The sliding blocks 125 are slidably arranged on the chuck 124 and move closer to or away from the center position of the chuck 124. A swelling block 126 for supporting the cylinder is provided on each sliding block 125. The cylinder position adjusting device 13 is located below the swelling block 126, and the cylinder position adjusting device 13 is used to adjust the position of the cylinder on the swelling block 126. Specifically, in the present utility model, the shielding cylinder is expanded by the expansion member of the infinitely rotatable cylinder, so that the shielding cylinder is fixed on the expansion member. A transmission shaft for driving the expansion member to rotate is arranged inside the infinitely rotatable cylinder. The transmission shaft is in transmission connection with the drive source. When the drive source works, it drives the transmission shaft to rotate, and the transmission shaft drives the expansion member to rotate; the expansion member of the infinitely rotatable cylinder expands the shielding cylinder, and the shielding cylinder rotates as the expansion member rotates. At the same time, a cylinder position adjusting device is also provided on the frame. The position of the shielding cylinder on the expansion member can be controlled through the cylinder position adjusting device, which is convenient for the curling device to curl the cylinder. The structure of the present utility model is simple and reasonable; the swelling block moves as the sliding block slides.

[0024] In the above-mentioned rotary tensioning structure for a shielding cylinder curling machine, there are three sliding blocks 125. Specifically, the sliding blocks are arranged in a Y shape, and the sliding blocks all move closer to or away from each other synchronously. When the swelling block needs to expand and fix the shielding cylinder, the sliding blocks move outwards.

[0025] In the above-mentioned rotary tensioning structure for a shielding cylinder curling machine, strip-shaped grooves 127 are provided on the outer side of the swelling block 126. Specifically, there are two strip-shaped grooves, which are respectively located at the upper and lower ends of the swelling block, so that the shielding cylinder can be firmly fixed when the swelling block expands outwards.

[0026] In the above-mentioned rotary tensioning structure for the shielding cylinder curling machine, the cylinder position adjusting device 13 includes an adjusting plate 131 and an adjusting cylinder 132. There are two adjusting cylinders 132, which are fixedly connected to the support frame 11 through a fixing plate 133. The adjusting plate 131 is fixedly connected to the telescopic rod of the adjusting cylinder 132 through a connecting frame 134. Specifically, the adjusting cylinder controls the adjusting plate to move up or down. In the initial state, the adjusting plate is far from the expanding block. When the shielding cylinder is sleeved outside the expanding block and placed on the adjusting plate, the adjusting cylinder controls the adjusting plate to move up. When it moves to the set position, the expanding block moves outwards to support the shielding cylinder. Finally, the adjusting cylinder controls the adjusting plate to return to its original position.

[0027] In the above-mentioned rotary tensioning structure for the shielding cylinder curling machine, the two adjusting cylinders 132 are located at the diagonal positions of the support frame 11, and a first through groove 135 for the infinite rotary cylinder 12 to pass through is provided on the adjusting plate 131. Specifically, this is to ensure the stable up and down movement of the adjusting plate, and the designed first through groove is to avoid interfering with the infinite rotary cylinder.

[0028] In the above-mentioned rotary tensioning structure for the shielding cylinder curling machine, the drive source 122 is a motor, and it is on one side of the support frame 11. The motor shaft of the motor is connected to a reduction box, and a power output gear shaft 14 is provided on the reduction box. The power output gear shaft 14 is connected to the transmission shaft 121 through a synchronous belt 15.

[0029] In the above-mentioned rotary tensioning structure for the shielding cylinder curling machine, the support frame 11 includes a left support 111, a right support 112, and a support plate 113. The two ends of the support plate 113 are respectively connected to the upper ends of the left support 111 and the right support 112. A synchronous belt avoiding groove 114 is provided on the left support 111, and a second through groove 115 for the transmission shaft 121 to pass through is provided on the support plate 113.

[0030] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A rotary tensioning structure for a shielding mesh drum crimping machine, comprising a frame (1), characterized in that: The frame (1) is provided with a support frame (11), and the support frame (11) is provided with an infinitely rotating cylinder (12) and a net cylinder position adjustment device (13). The infinitely rotating cylinder (12) is internally connected with a transmission shaft (121), and the lower end of the transmission shaft (121) extends out of the lower end of the infinitely rotating cylinder (12) and is externally connected with a driving source (122). The driving source (122) drives the expansion member (123) of the infinitely rotating cylinder (12) to rotate through the transmission shaft (121), and the expansion member (123) comprises a chuck (124) and at least two sliding blocks (125), wherein the sliding blocks (125) are slidably arranged on the chuck (124), and the sliding blocks (125) are close to or away from the center position of the chuck (124), and each sliding block (125) is provided with a rising block (126) for supporting the net cylinder, and the net cylinder position adjusting device (13) is located below the rising block (126), and the net cylinder position adjusting device (13) is used to adjust the position of the net cylinder on the rising block (126).

2. The rotary tensioning structure for a shielding mesh drum crimping machine according to claim 1, characterized in that: There are three sliding blocks (125).

3. The rotary tensioning structure for a shielding mesh drum crimping machine according to claim 1, characterized in that: A strip-shaped groove (127) is provided on the outer side of the expansion block (126).

4. The rotary tensioning structure for a shielding mesh drum crimping machine according to claim 1, 2 or 3, characterized in that: The net cylinder position adjustment device (13) comprises an adjustment plate (131) and an adjustment cylinder (132); the adjustment cylinder (132) is two in number and is fixedly connected to the support frame (11) via a fixing plate (133); and the adjustment plate (131) is fixedly connected to the telescopic rod of the adjustment cylinder (132) via a connecting frame (134).

5. The rotary tensioning structure for a shielding mesh drum crimping machine according to claim 4, characterized in that: The two regulating cylinders (132) are located at diagonal positions of the support frame (11), and a through slot (135) for the infinitely rotating cylinder (12) to pass through is provided on the regulating plate (131).

6. The rotary tensioning structure for a shielding mesh drum crimping machine according to claim 4, characterized in that: The driving source (122) is a motor, and on one side of the support frame (11), the motor shaft of the motor is connected to a reduction box, and the reduction box is provided with a power output gear shaft (14), and the power output gear shaft (14) is connected to the transmission shaft (121) via a synchronous belt (15).

7. The rotary tensioning structure for a shielding mesh drum crimping machine according to claim 6, characterized in that: The support frame (11) comprises a left support (111), a right support (112) and a support plate (113); two ends of the support plate (113) are respectively connected to the upper ends of the left support (111) and the right support (112); a synchronous belt avoidance groove (114) is provided on the left support (111); and a second through groove (115) is provided on the support plate (113) for facilitating the passage of a transmission shaft (121).

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