A floating roller winding tension adjustment mechanism

Abstract

The present invention relates to a floating roller winding tension adjustment mechanism, which is characterized by comprising a base frame, a rotating shaft is fixed on the left and right sides of the base frame; a floating roller bracket assembly arranged symmetrically on the left and right sides, comprising a rotating shaft seat, a spring seat, a floating shaft seat, and a plurality of springs, the rotating shaft seat is fixed on an equipment platform, the spring seat is fixed on the rotating shaft seat, the floating shaft seat is placed in the inner hole of the spring seat, a plurality of spring adjustment screws are arranged along the circumference of the spring seat, a plurality of spring positioning pins are fixed on the periphery of the floating shaft seat, the spring is clamped between the spring seat and the floating shaft seat by the positioning of the spring adjustment screws and the spring positioning pins, the rotating shaft is installed on the floating shaft seat through a bearing, and the floating shaft seat is provided with an angle limiting structure for limiting the rotation amplitude of the rotating shaft; a bracket is fixed on the base frame; an upper pressing plate for pressing a material film on the base frame is arranged above the base frame, and can be driven up and down by a cylinder installed on the bracket. The base frame of the mechanism can slightly move in multiple degrees of freedom after being subjected to external force, and the base frame can automatically reset to the center position when not subjected to external force, so that the tension adjustment control is more stable.

Description

Technical Field

[0001] The invention relates to a metal film winding device, in particular to a floating roller winding tension adjustment mechanism. Background Art

[0002] In many industries of industrial production, such as the production of paper, textiles, printed materials, plastic and metal films, strips, etc., winding control problems are often encountered. The difficulty in winding control is the control of winding tension and winding guide. If these two problems are not controlled well, many problems will arise, such as wrinkles and breaks on the edges of the wound material, loose rolls, left and right deviations of the rolls, etc.

[0003] The existing winding tension adjustment mechanism generally adopts the principle that the material passes through the guide roller, pressure roller, and tension roller in sequence, and then the last traction winding roller completes the winding. The traction force is adjusted according to the material tension measured by the tension roller to achieve constant tension winding. This mechanism can complete the winding of general materials very well, but for the metal film after punching, since the lubricant is sprayed on the surface of the metal film during the punching production, the material will slide on the pressure roller and the tension roller, causing the tension measurement to be inaccurate and the adjustment control to be unstable, and the winding effect is very poor. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a floating roller winding tension adjustment mechanism in response to the above-mentioned existing technical status. The base frame of the mechanism can slightly move in multiple degrees of freedom after being subjected to external force, and can automatically reset to the center position when not subjected to external force, so that the tension adjustment control is more stable.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a floating roller winding tension adjustment mechanism, characterized in that: it includes a base frame for placing a material film, and a rotating shaft is fixed on the left and right sides of the base frame; a floating roller bracket assembly symmetrically arranged on the left and right sides includes a rotating shaft seat, a spring seat, a floating shaft seat, and multiple springs, the rotating shaft seat is fixed on the equipment platform, the spring seat is fixed on the rotating shaft seat, the floating shaft seat is placed in the inner hole of the spring seat, and the spring seat is arranged with a plurality of spring adjustment screws at intervals along the circumference, and a plurality of spring locating pins corresponding to the spring adjustment screws are fixed on the periphery of the floating shaft seat, the spring is positioned and clamped between the spring seat and the floating shaft seat by the spring adjustment screws and the spring locating pins, the rotating shaft is installed on the floating shaft seat through a bearing, and the floating shaft seat is provided with an angle limiting structure for limiting the rotation amplitude of the rotating shaft; a bracket is fixed on the base frame; an upper pressing plate for pressing the material film on the base frame is arranged above the base frame and can be moved up and down by being driven by a cylinder installed on the bracket.

[0006] As an improvement, the spring seat is positioned by the boss and the hole of the rotating shaft seat, and then fixed to the rotating shaft seat by a plurality of screws. The spring seat is positioned by the boss and the hole of the rotating shaft seat to ensure concentricity.

[0007] As a further improvement, the floating shaft seat is in a regular octagonal shape, and the spring adjustment screws and spring positioning pins are eight in number, so as to ensure that the floating shaft seat can float in eight directions and the floating shaft seat can slightly move in any direction.

[0008] Preferably, the base frame is welded by two transverse square steel tubes and four longitudinal square steel tubes, and circular holes tightly matched with the rotating shaft are opened at the central symmetric positions of the two outermost longitudinal square steel tubes, and the rotating shaft is fixed in the circular holes.

[0009] Preferably, the bearing is a self-lubricating radial spherical bearing, and a bearing gland that limits the axial movement of the bearing is fixed on the floating shaft seat; and a shaft clamp is clamped on the rotating shaft. The bearing gland limits the axial movement of the self-lubricating radial spherical bearing and prevents it from falling out of the floating shaft seat. The shaft clamp is used to ensure that the rotating shaft will not slip out of the self-lubricating radial spherical bearing during the assembly process.

[0010] As a further improvement, the above-mentioned angle limiting structure includes a plurality of limiting screws, the rotating shaft has a flat portion, the floating shaft seat has a concave cavity with a diameter larger than the maximum radial distance of the flat portion, the flat portion is placed in the concave cavity, the limiting screw is threadedly connected to the side wall of the concave cavity of the floating shaft seat, and a plurality of limiting screws are distributed on both sides of the flat portion, and the inner ends of the limiting screws contact the flat portion to limit the rotation range of the rotating shaft. The screw located on one side of the flat portion is used to limit the counterclockwise rotation range of the rotating shaft, while the screw located on the other side of the flat portion is used to limit the clockwise rotation range. At the same time, by rotating the limiting screw to control the length of the extended concave cavity, the rotation and floating of the rotating shaft can be adjusted.

[0011] Preferably, the upper pressing plate is fixed to the bottom surface of the pressing plate frame, and the pressing plate frame is driven by the cylinder to move up and down; a lower pressing plate is fixed on the bottom frame, and the material film is pressed between the upper pressing plate and the lower pressing plate. The upper pressing plate can be made of high-density oil-absorbing felt, and the rolled material film passes through the two pressing plates. The cylinder drives the upper pressing plate to press the material, and the tension is the friction between the material and the upper and lower pressing plates. The tension can be adjusted by the proportional valve to the air pressure of the cylinder.

[0012] To ensure good guiding of the material film, the base frame is provided with two sets of left and right guide structures arranged along the feeding and discharging direction, the guide structures include a guide lower plate, a guide middle plate and a guide upper plate, the guide lower plate is mounted on the base frame, the guide middle plate and the guide upper plate are both mounted on the guide lower plate, the guide middle plate is located between the guide lower plate and the guide upper plate and serves as a gap pad. The guide middle plate serves as a gap pad, and its thickness can be selected according to the thickness of the winding material.

[0013] To facilitate feeding, the material entry direction and material exit direction of the above-mentioned chassis are both provided with a material transfer shaft, and both ends of the material transfer shaft are installed on the material transfer shaft seat through bearings, and the material transfer shaft seat is fixed to the chassis through the material transfer shaft support plate, and the upper arc surface of the material transfer shaft is aligned with the upper plane of the lower pressing plate. The setting of the material transfer shaft allows the rolled material to transition smoothly and prevent wrinkles.

[0014] Further improvement, the bracket includes a support plate, a cylinder mounting plate and a baffle, the support plate has two pieces, which are fixed on the left and right sides of the base frame respectively, the cylinder mounting plate is fixed on the support plate, and the baffle is fixed on the cylinder mounting plate to resist the back of the cylinder. The back of the cylinder is resisted by the baffle fixed on the cylinder mounting plate to prevent the material from driving the cylinder to move backward during winding.

[0015] Compared with the prior art, the advantages of the present invention are: the rotating shaft of the chassis is installed on the floating shaft seat through the bearing, and the floating shaft seat located in the center can move slightly in any direction under the action of the spring after being subjected to external force, and can automatically return to the center position when not subjected to external force. The chassis can swing within a certain angle range with the adaptability of the material film, ensuring that the pressure of the upper pressure plate pressing the material film is constant, avoiding the movement of the material film, and the tension adjustment control is more stable. The cylinder drives the upper pressure plate to press the material film, and the tension is the friction between the material and the upper pressure plate and the chassis. The size of the tension can be adjusted by the proportional valve to the air pressure of the cylinder, and the tension adjustment is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural cross-sectional view of an embodiment of the present invention;

[0017] Figure 2 It is a lateral structural cross-sectional view of an embodiment of the present invention;

[0018] Figure 3 It is a cross-sectional view of the structure in the top direction of an embodiment of the present invention;

[0019] Figure 4 is a top view of a base frame according to an embodiment of the present invention;

[0020] Figure 5 is a side view of a base frame according to an embodiment of the present invention;

[0021] Figure 6A schematic diagram of a floating roller support assembly according to an embodiment of the present invention;

[0022] Figure 7 for Figure 6 AA section view;

[0023] Figure 8 is a cross-sectional view of a corner limiting structure in an embodiment of the present invention;

[0024] Fig. 9 for Figure 8 BB section view;

[0025] Fig.10 Schematic diagram of the installation of the pressure plate in the embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 10 Shown is a preferred embodiment of the present invention.

[0028] A floating roller winding tension adjustment mechanism, comprising

[0029] Base frame 1, such as Figure 4 , 5 As shown, the base frame 1 is used to place the material film 4, and the rotating shaft 2 is fixed on the left and right sides; the base frame 1 is welded by two horizontal square steel tubes 11 and four longitudinal square steel tubes 12, and the upper and lower surfaces of the base frame need to be ground flat after welding. The two longitudinal square steel tubes 12 located on the outermost sides have circular holes symmetrically opened at the center to fit the rotating shaft 2, and the rotating shaft 2 is fixed in the circular holes.

[0030] like Figure 6 , 7 As shown, the floating roller support assembly is symmetrically arranged on both sides, including a rotating shaft seat 10, a spring seat 20, a floating shaft seat 50, and a plurality of springs 70. The rotating shaft seat 10 is fixed on the equipment platform by screws, and the spring seat 20 is fixed on the rotating shaft seat. The spring seat 20 is positioned by cooperating with the hole 101 of the rotating shaft seat 10 through the boss 201, and then fixed to the rotating shaft seat by a plurality of screws 30. The floating shaft seat 50 is placed in the inner hole of the spring seat 20, and the spring seat 20 is provided with a plurality of spring adjustment screws 40 arranged at intervals along the circumference. The floating shaft seat 50 is provided with a plurality of spring positioning pins 60 corresponding to the spring adjustment screws 40. The spring 70 is clamped between the spring seat 20 and the floating shaft seat 50 by the positioning of the spring adjustment screws 40 and the spring positioning pins 60. The floating shaft seat 50 is a regular octagon, and there are eight spring adjustment screws 40 and eight spring positioning pins 60. The floating shaft seat 50 located in the center can slightly move in any direction under the action of the spring when subjected to external force, and can automatically return to the center position when not subjected to external force.

[0031] like Figure 8 As shown, the rotating shaft 2 is installed on the floating shaft seat 50 through the bearing 3, the bearing 3 is a self-lubricating radial spherical bearing, and a bearing gland 31 is fixed on the floating shaft seat 50 to limit the axial movement of the bearing 3; a shaft clamping ring 32 is clamped on the rotating shaft 2. The floating shaft seat 50 is provided with an angle limiting structure to limit the rotation range of the rotating shaft 2.

[0032] like Figure 8 , 9 As shown, the angle limiting structure includes a plurality of limit screws 33, the rotating shaft 2 has a flat portion 21, the floating shaft seat 50 has a concave cavity 501 with a diameter larger than the maximum radial distance of the flat portion 21, the flat portion 21 is placed in the concave cavity 501, the limit screws 33 are threadedly connected to the side wall of the concave cavity 501 of the floating shaft seat 50, and the plurality of limit screws 33 are distributed on both sides of the flat portion 21, and the inner ends of the limit screws 33 are in contact with the flat portion 21 to limit the rotation range of the rotating shaft 2.

[0033] like Figure 1 , 2 As shown, two groups of brackets 5 are fixed on the bottom frame 1 at intervals in front and back; there are two groups of upper pressing plates 6 for pressing the material film 4 on the bottom frame 1, which are respectively located at the feeding end and the discharging end, and are arranged above the bottom frame 1, and can be moved up and down by the cylinder 7 installed on the bracket 5. There are two cylinders 7. The bracket 5 includes a support plate 51, a cylinder mounting plate 52 and a baffle 53. The support plate 51 has two pieces, which are respectively fixed on the left and right sides of the bottom frame 1, the cylinder mounting plate 52 is fixed on the support plate 51, and the baffle 53 is fixed on the cylinder mounting plate 52 to resist the back of the cylinder 7.

[0034] like Fig.10 As shown, the upper pressing plate 6 is fixed to the bottom surface of the pressing plate frame 61, the pressing plate frame 61 is made of square steel pipe, the upper pressing plate 6 is made of high-density oil-absorbing felt, the cylinder rod of the cylinder 7 is fixed to the pressing plate frame 61 through two nuts, and the pressing plate frame 61 is driven by the cylinder 7 to move up and down; the lower pressing plate 8 is fixed on the bottom frame 1, and the material film 4 is pressed between the upper pressing plate 6 and the lower pressing plate 8. The rolled material film 4 passes between the upper pressing plate 6 and the lower pressing plate 8, and the cylinder 7 drives the upper pressing plate 6 to press the material film 4. The tension is the friction between the material film 4 and the upper and lower pressing plates. The size of the tension can be adjusted by the proportional valve to the air pressure of the cylinder.

[0035] like Fig.10As shown, the base frame 1 is provided with two groups of left and right guide structures arranged along the material inlet and outlet direction, and the guide structures include a material guide lower plate 91, a material guide middle plate 92 and a material guide upper plate 93. The material guide lower plate 91 is installed on the base frame, and the material guide middle plate 92 and the material guide upper plate 93 are both installed on the material guide lower plate 91. The material guide middle plate is located between the material guide lower plate 91 and the material guide upper plate 93 and serves as a gap pad. The material guide lower plate 91 and the material guide upper plate 93 are both provided with a groove 94 at the entrance where they contact the material. Figure 2 , 3 As shown, a feed shaft 80 is provided for transition in the material entry direction and the material exit direction of the base frame 1. Both ends of the feed shaft 80 are installed on a feed shaft seat 801 through bearings. The feed shaft seat 801 is fixed to the base frame 1 through a feed shaft support plate 802. The upper arc surface of the feed shaft 80 is aligned with the upper plane of the lower pressure plate 8.

[0036] It should be noted that in the description of this embodiment, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A floating roller winding tension adjustment mechanism, characterized in that: include A bottom frame is used to place the material film, and a rotating shaft is fixed on the left and right sides of the bottom frame; A floating roller support assembly symmetrically arranged on both sides comprises a rotating shaft seat, a spring seat, a floating shaft seat, and a plurality of springs, wherein the rotating shaft seat is fixed on the equipment platform, the spring seat is fixed on the rotating shaft seat, the floating shaft seat is placed in the inner hole of the spring seat, a plurality of spring adjustment screws are arranged at intervals along the circumference of the spring seat, a plurality of spring positioning pins corresponding to the spring adjustment screws are fixed on the periphery of the floating shaft seat, the spring is positioned and clamped between the spring seat and the floating shaft seat by the spring adjustment screws and the spring positioning pins, the rotating shaft is mounted on the floating shaft seat by a bearing, and the floating shaft seat is provided with an angle limiting structure for limiting the rotation amplitude of the rotating shaft; A bracket, fixed to the base frame; An upper pressure plate used to press the material film onto the base frame is arranged above the base frame and is driven by a cylinder installed on the bracket to move up and down; the base frame is welded by two horizontal square steel tubes and four longitudinal square steel tubes, and circular holes tightly matched with the rotating shaft are opened at the central symmetric positions of the two outermost longitudinal square steel tubes, and the rotating shaft is fixed in the circular holes; the angle limiting structure includes a plurality of limit screws, the rotating shaft has a flat portion, and the floating shaft seat has a concave cavity with a diameter larger than the maximum radial distance of the flat portion, the flat portion is placed in the concave cavity, and the limit screw is threadedly connected to the side wall of the concave cavity of the floating shaft seat, and the plurality of limit screws are distributed on both sides of the flat portion, and the inner ends of the limit screws are in contact with the flat portion to limit the rotation amplitude of the rotating shaft.

2. The floating roller winding tension adjustment mechanism according to claim 1, characterized in that: The spring seat is positioned by cooperating with the hole of the rotating shaft seat through the boss, and then fixed to the rotating shaft seat through a plurality of screws.

3. The floating roller winding tension adjustment mechanism according to claim 1, characterized in that: The floating shaft seat is in a regular octagonal shape, and there are eight spring adjustment screws and eight spring positioning pins.

4. The floating roller winding tension adjustment mechanism according to claim 1, characterized in that: The bearing is a self-lubricating radial spherical bearing, and a bearing gland for limiting the axial movement of the bearing is fixed on the floating shaft seat; a shaft clamping ring is clamped on the rotating shaft.

5. The floating roller winding tension adjustment mechanism according to claim 1, characterized in that: The upper pressing plate is fixed on the bottom surface of the pressing plate frame, and the pressing plate frame is driven by the cylinder to move up and down; a lower pressing plate is fixed on the bottom frame, and the material film is pressed between the upper pressing plate and the lower pressing plate.

6. The floating roller winding tension adjustment mechanism according to claim 5, characterized in that: The base frame is provided with two left and right groups of guide structures arranged along the material feeding and discharging direction, and the guide structures include a material guide lower plate, a material guide middle plate and a material guide upper plate. The material guide lower plate is installed on the base frame, the material guide middle plate and the material guide upper plate are both installed on the material guide lower plate, and the material guide middle plate is located between the material guide lower plate and the material guide upper plate and serves as a gap pad.

7. The floating roller winding tension adjustment mechanism according to claim 6, characterized in that: A feeding shaft transition is arranged in the material entry direction and the material exit direction of the base frame. Both ends of the feeding shaft are installed on the feeding shaft seat through bearings. The feeding shaft seat is fixed to the base frame through the feeding shaft support plate. The upper arc surface of the feeding shaft is aligned with the upper plane of the lower pressure plate.

8. The floating roller winding tension adjustment mechanism according to claim 1, characterized in that: The bracket includes a support plate, a cylinder mounting plate and a baffle. There are two support plates, which are respectively fixed on the left and right sides of the base frame. The cylinder mounting plate is fixed on the support plate. The baffle is fixed on the cylinder mounting plate to resist the back of the cylinder.

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