Unwinding mechanism for pre-coating film base material

Abstract

The utility model relates to the technical field of unwinding equipment, and provides an unwinding mechanism for a pre-coating film base material, which comprises a plurality of supporting arc plates and a connecting rod which are spliced into a cylinder, and one end of the connecting rod is hinged with the inner wall of each supporting arc plate; the center push shaft is arranged among the bearing arc plates, and the other end of the connecting rod is hinged to the center push shaft; the surface of the rotating drum is provided with a sliding notch connected with the tail end of the bearing arc plate in a matched mode, an electric cylinder is arranged in the rotating drum and connected with the tail end of the center push shaft, the center push shaft is pushed by the electric cylinder to move forwards, and the bearing arc plate moves in the radial direction to be opened. According to the utility model, the diameter of the supporting surface can be conveniently changed, so that a film roll is easier to replace and disassemble, and the operation is more time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of unwinding equipment, in particular to an unwinding mechanism for a pre-coated film substrate. Background Art

[0002] Pre-coated film is a special plastic film that is pre-coated with glue and rewound before being laminated with paper printed products. It is made of plastic, adhesive, rubber or other materials. Pre-coated film is widely used in electronics, machinery, printing and other industries. Due to the small thickness of pre-coated film, it needs to be wound into a film roll during production and transportation, and then released from the film roll when it is used.

[0003] Usually, during the unwinding process, the film roll is mounted on a transmission shaft, and the film roll is rotated and unwound by the rotation of the transmission shaft. However, during use, this structure directly sleeves the film roll on the outside of the transmission shaft. In order to prevent the film roll from slipping relative to the transmission shaft, the inner hole diameter of the film roll is adapted to the transmission shaft, which can easily cause the film roll to fit too tightly to the transmission shaft, making it inconvenient to disassemble and replace the film roll, and replacing the film roll is time-consuming and labor-intensive. Utility Model Content

[0004] The utility model aims to provide a pre-coated film substrate unwinding mechanism which can conveniently replace and fix the film roll, saving time and labor.

[0005] The embodiment of the utility model is realized through the following technical scheme: a reeling mechanism for a pre-coated film substrate, comprising a plurality of supporting arc plates and connecting rods assembled into a cylindrical shape, one end of the connecting rod being hinged to the inner wall of the supporting arc plate; a central push shaft, which is arranged between the plurality of the supporting arc plates, and the other end of the connecting rod is hinged to the central push shaft; a rotating drum, the surface of the rotating drum being provided with a sliding groove adapted to be connected to the rear end of the supporting arc plate, an electric cylinder being arranged in the rotating drum, the electric cylinder being connected to the rear end of the central push shaft, the central push shaft being pushed forward by the electric cylinder, and the supporting arc plate being moved radially and expanded.

[0006] Preferably, a conical disk is provided at the tail end of the central push shaft, and the conical disk is located in the rotating cylinder; an inclined block corresponding to the conical disk is provided at one end of the supporting arc plate close to the rotating cylinder.

[0007] Preferably, the connecting rod is provided with at least two evenly spaced apart along the axial direction of the central push shaft.

[0008] Preferably, the outer surface of the supporting arc plate is provided with anti-slip strips and anti-slip soft glue, the anti-slip strips are provided at the front and rear ends of the supporting arc plate, and the anti-slip soft glue is provided at the middle section of the supporting arc plate.

[0009] Preferably, it also includes an unwinding table, on which a support plate is provided, on which a limiting ring sleeve is provided, one end of the rotating drum is adapted to fit into the limiting ring sleeve, and the rear end of the rotating drum is connected to a driving motor.

[0010] Preferably, the unwinding platform is also provided with a guide roller and a traction assembly, and the guide roller is kept parallel to the central push shaft.

[0011] Preferably, the traction assembly comprises at least two traction rollers, and the two traction rollers are vertically stacked, closely attached and arranged in parallel.

[0012] Preferably, a limiting vertical plate corresponding to the connecting rod is installed on the central push shaft, and the limiting vertical plate is close to the hinge point between the connecting rod and the central push shaft.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects: the utility model can fix and disassemble the film roll by changing the size of the inner support of the film roll, thereby improving the efficiency of unwinding, saving time and labor;

[0014] It can be applied to unwinding membrane rolls with different inner hole diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic structural diagram of an unwinding mechanism for a pre-coated film substrate provided in an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the unwinding mechanism of the utility model when it is closed;

[0018] Figure 3 It is a schematic diagram of the internal structure of the unwinding mechanism of the pre-coated film substrate in the utility model;

[0019] Figure 4 It is a schematic diagram of the outer surface structure of the supporting arc plate in the utility model.

[0020] Icons: 1-supporting arc plate, 11-inclined block, 12-anti-slip strip, 13-anti-slip soft rubber, 14-limiting vertical plate, 2-connecting rod, 3-center push shaft, 31-conical disk, 4-rotating drum, 41-sliding slot, 5-electric cylinder, 6-driving motor, 7-unwinding table, 71-support plate, 711-limiting ring sleeve, 8-guide roller, 9-traction assembly, 91-traction roller. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] Example

[0025] The following is further described in conjunction with specific embodiments. Figure 1-Figure 4As shown, this embodiment is a reeling mechanism for a pre-coated film substrate, comprising a plurality of supporting arc plates 1 and connecting rods 2 assembled into a cylindrical shape, one end of the connecting rod 2 being hinged to the inner wall of the supporting arc plate 1; a central push shaft 3, which is arranged between the plurality of supporting arc plates 1, and the other end of the connecting rod 2 is hinged to the central push shaft 3; a rotating drum 4, the surface of which is provided with a sliding groove 41 adapted to be connected with the rear end of the supporting arc plate 1, an electric cylinder 5 is arranged in the rotating drum 4, the electric cylinder 5 is connected to the rear end of the central push shaft 3, the central push shaft 3 is pushed forward by the electric cylinder 5, and the supporting arc plate 1 is radially moved and stretched; specifically, when in use, the film roll is put on the supporting arc plate 1, and the film roll is put on the supporting arc plate 1, and the supporting arc plate 1 is radially moved and stretched. In the cylindrical structure formed by the arc plate 1, the supporting arc plate 1 is initially in a tightened state. When the electric cylinder 5 pushes the central push shaft 3 outward for a distance, the central push shaft 3 drives the connecting rod 2 to gradually stand up from the retracted inclined state, so that the supporting arc plate 1 moves radially outward until it is in close contact with the inner hole wall of the film roll. The supporting arc plate 1 can drive the film roll to rotate synchronously. When unwinding, the rotation of the rotating drum 4 can drive the supporting arc plate 1 and the film roll to unwind synchronously; and when the film roll is completely gone, the electric cylinder 5 pulls the central push shaft 3 back, and the supporting arc plate 1 is retracted and closed, and its closed diameter becomes smaller, and the film roll can be easily removed for replacement. This operation is simpler and saves time and effort.

[0026] In addition, since the central push shaft 3 can radially push out the supporting arc plate 1 to adjust the size, the supporting arc plate 1 can be used for unwinding film rolls with various inner hole diameters.

[0027] like Figure 3 As shown, in this embodiment, a conical disk 31 is provided at the tail end of the central push shaft 3, and the conical disk 31 is located in the rotating drum 4; an inclined block 11 corresponding to the conical disk 31 is provided at one end of the supporting arc plate 1 close to the rotating drum 4; specifically, in order to prevent the connecting rod 2 from being too close to the central push shaft 3 and being difficult to unfold, setting the conical disk 31 to abut against the inclined block 11 first helps to improve this problem.

[0028] Reference Figure 3 As shown, in order to enable the supporting arc plate 1 to bear the force evenly and avoid the supporting arc plate 1 from having a large offset deformation in the axial direction, at least two connecting rods 2 are arranged evenly spaced along the axial direction of the central push shaft 3.

[0029] like Figure 1 and Figure 4 As shown, the outer surface of the supporting arc plate 1 in this embodiment is provided with an anti-slip strip 12 and an anti-slip soft glue 13. The anti-slip strip 12 is arranged at the front and rear ends of the supporting arc plate 1, and the anti-slip soft glue 13 is arranged in the middle section of the supporting arc plate 1; specifically, when the supporting arc plate 1 is unfolded, the anti-slip strip 12 and the anti-slip soft glue 13 are pressed against the inner wall of the film roll under the premise that the connecting rod 2 applies pressure, so that the anti-slip strip 12 and the anti-slip soft glue 13 will produce a certain deformation, and when the rotating drum 4 drives the supporting arc plate 1 and the film roll to rotate, the supporting arc plate 1 and the film roll are not prone to slipping.

[0030] The present embodiment also includes an unwinding platform 7, on which a support plate 71 is provided, on which a limiting ring sleeve 711 is provided, one end of the rotating drum 4 is adapted to be snapped into the limiting ring sleeve 711, and the limiting ring sleeve 711 provides auxiliary support for the rotating drum 4, and the rear end of the rotating drum 4 is connected to a driving motor 6, which is mounted on the supporting plate 71 by screws to provide rotational power for the rotating drum 4 and the film roll when unwinding.

[0031] like Figure 1 As shown, the unwinding table 7 is also provided with a guide roller 8 and a traction assembly 9. The guide roller 8 is kept parallel to the central push shaft 3; the traction assembly 9 includes at least two traction rollers 91, and the two traction rollers 91 are stacked vertically tightly and arranged in parallel. Specifically, during the unwinding process, the traction roller 91 cooperates with the rotating drum 4 to well output the film from the film roll layer by layer. The pre-coated film first contacts the guide roller 8 and then passes between the two traction rollers 91, so that the pre-coated film is in a sufficiently taut state.

[0032] like Figure 3 As shown, in order to prevent the connecting rod 2 from excessive rotation, a limiting plate 14 corresponding to the connecting rod 2 is installed on the central push shaft 3, and the limiting plate 14 is close to the hinge point between the connecting rod 2 and the central push shaft 3. Specifically, when the connecting rod 2 is rotated to be perpendicular to the central push shaft 3, the connecting rod 2 abuts against the limiting plate 14, and the supporting surface formed by the supporting arc plate 1 at this moment is the inner hole diameter of the maximum supporting membrane roll.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A unwinding mechanism for a pre-coated film substrate, characterized in that: It comprises a plurality of supporting arc plates (1) assembled into a cylindrical shape and a connecting rod (2), one end of the connecting rod (2) being hinged to the inner wall of the supporting arc plate (1); A central push shaft (3) is arranged between the plurality of supporting arc plates (1), and the other end of the connecting rod (2) is hingedly connected to the central push shaft (3); A rotating drum (4) is provided on the surface of the rotating drum (4) with a sliding groove (41) adapted to be connected with the tail end of the supporting arc plate (1). An electric cylinder (5) is provided inside the rotating drum (4), and the electric cylinder (5) is connected to the tail end of the central push shaft (3). The central push shaft (3) is pushed forward by the electric cylinder (5), and the supporting arc plate (1) is moved and expanded in the radial direction.

2. The unwinding mechanism for the pre-coated film substrate according to claim 1, characterized in that: A conical disk (31) is provided at the tail end of the central push shaft (3), and the conical disk (31) is located inside the rotating drum (4); An inclined block (11) corresponding to and matching the conical disk (31) is provided at one end of the supporting arc plate (1) close to the rotating drum (4).

3. The unwinding mechanism for the pre-coated film substrate according to claim 2, characterized in that: The connecting rod (2) is provided with at least two connecting rods evenly spaced apart along the axial direction of the central push shaft (3).

4. The unwinding mechanism for the pre-coated film substrate according to claim 1, characterized in that: The outer surface of the supporting arc plate (1) is provided with an anti-slip strip (12) and an anti-slip soft glue (13); the anti-slip strip (12) is provided at the front and rear ends of the supporting arc plate (1), and the anti-slip soft glue (13) is provided at the middle section of the supporting arc plate (1).

5. The unwinding mechanism for the pre-coated film substrate according to claim 1, characterized in that: It also comprises an unwinding platform (7), wherein a support plate (71) is provided on the unwinding platform (7), a limiting ring sleeve (711) is provided on the support plate (71), one end of the rotating drum (4) is adapted to fit into the limiting ring sleeve (711), and the rear end of the rotating drum (4) is connected to a driving motor (6).

6. The unwinding mechanism for the pre-coated film substrate according to claim 5, characterized in that: The unwinding platform (7) is also provided with a guide roller (8) and a traction assembly (9), and the guide roller (8) is kept parallel to the central pushing shaft (3).

7. The unwinding mechanism for the pre-coated film substrate according to claim 6, characterized in that: The traction assembly (9) comprises at least two traction rollers (91), and the two traction rollers (91) are stacked vertically, closely attached to each other and arranged in parallel.

8. The unwinding mechanism for the pre-coated film substrate according to claim 1, characterized in that: A limiting vertical plate (14) corresponding to the connecting rod (2) is installed on the central push shaft (3), and the limiting vertical plate (14) is close to the hinge point between the connecting rod (2) and the central push shaft (3).

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