Polymeric membrane uncoiling frame

Abstract

The utility model relates to the technical field of polymeric membranes, in particular to a polymeric membrane uncoiling frame which comprises a bottom plate, a vertical plate is arranged on one side of the bottom plate, a rotating shaft is connected to one side of the vertical plate through a bearing, a pair of plate-shaped hinge seats are symmetrically arranged on the outer side of the rotating shaft, a plurality of connecting rods are hinged to the plate-shaped hinge seats, and arc-shaped positioning plates are hinged to the ends of the connecting rods. A push-pull rod is hinged to one end of the inner side of the arc-shaped positioning plate, a threaded rod is arranged at the tail end of the rotating shaft and sleeved with a sleeve hinged to the push-pull rod, a positioning rotating cylinder is in threaded connection with the threaded rod, and a supporting assembly connected with the tail end of the threaded rod is installed at the upper end of the bottom plate. The device has the advantages that the positioning rotary drum, the sleeve, the threaded rod, the push-pull rod and the connecting rod are matched to push the pair of arc-shaped positioning plates to be in contact with the inner wall of the winding drum, so that the polymeric membrane winding drum is fixed; the other end of the rotating shaft is supported through the supporting assembly, and the service life of the rotating shaft and the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of polymer films, in particular to a polymer film unwinding stand. Background Art

[0002] After the polymer film is produced, it is stored in roll form, including during transportation and storage. When it is used, the roll of polymer film needs to be unfolded, so an unwinding rack is required for use.

[0003] The existing polymer film unwinding stand has a simple structure, which is usually composed of a vertical support plate and a horizontal shaft connected to the horizontal bearing on it, and a limit plate is installed on one side of the horizontal shaft. When in use, the unwinding stand is set up on the production equipment, and then the roll of polymer film is inserted into the horizontal shaft and the limit plate is installed for limiting the position. However, when the polymer film is unwound, the rotation of the polymer film roll is unstable due to the inconsistency between the internal diameter of the roll and the cross-sectional diameter of the horizontal shaft. The roll is prone to shaking and slipping on the horizontal shaft, which affects the use of the polymer film after unwinding. In addition, there is no support structure at the end of the horizontal shaft, and the horizontal shaft is only supported by one end connected by the bearing, which reduces the service life of the bearing and the horizontal shaft. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that when the existing polymer film unwinding stand is used, the polymer film roll rotates unstably on the horizontal axis, and the horizontal axis is supported only at one end connected by a bearing, which reduces the service life of the bearing and the horizontal axis.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a polymer film unwinding stand, comprising a base plate, a vertical plate is provided on one side of the base plate, a bearing on one side of the vertical plate is connected to a rotating shaft, a pair of plate-shaped hinged seats are symmetrically provided on the outside of the rotating shaft, a number of connecting rods are hinged on the plate-shaped hinged seats, and the ends of the connecting rods are hinged with arc-shaped positioning plates with arc grooves relative to each other, a push-pull rod is hinged at one end of the inner side of the arc-shaped positioning plate, a threaded rod is provided at the end of the rotating shaft, a sleeve hinged to the end of the push-pull rod is sleeved on the threaded rod, a positioning rotating cylinder in contact with one end of the outer side of the sleeve is threadedly connected on the threaded rod, and a support assembly connected to the end of the threaded rod is installed on the upper end of the base plate.

[0008] Furthermore, the inner side and one end of the inner side of the arc-shaped positioning plate are respectively provided with a plurality of hinged seats 1 hinged to one end of the connecting rod and a hinged seat 2 hinged to one end of the push-pull rod, and the outer side of the sleeve is symmetrically provided with a pair of hinged seats 3 hinged to the end of the push-pull rod.

[0009] Furthermore, a curved rubber pad is fixed to the outer side of the curved positioning plate.

[0010] Furthermore, the support assembly includes a pair of sliding grooves symmetrically provided on the outside of the threaded rod and passing through at one end, a rotating drum is sleeved on the threaded rod, a pair of limiting sliding blocks slidably connected to the sliding grooves are provided on the inside of the rotating drum, and the end of the threaded rod is threadedly connected to a positioning rotating drum 2 that contacts one end of the outer side of the rotating drum, an electric push rod is installed on the upper end of the base plate, and an arc-shaped support plate with an arc groove facing upward is fixed on the top of the electric push rod.

[0011] Furthermore, a plurality of balls in contact with the outer side of the rotating drum are rotatably connected in the arc groove of the arc-shaped support plate.

[0012] Furthermore, the positioning rotating cylinder and the second positioning rotating cylinder have the same structure. The second positioning rotating cylinder includes a threaded cylinder threadedly connected to the threaded rod. A plurality of toggle rods are equidistantly arranged in an annular manner on the outer side of the threaded cylinder.

[0013] 3. Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are:

[0015] 1. By rotating the positioning drum, the sleeve moves inward on the threaded rod, so that the push-pull rod pushes the arc-shaped positioning plate to move outward under the hinged cooperation of several connecting rods and an articulated seat. The roll of polymer film is inserted outside a pair of arc-shaped positioning plates, so that the pair of arc-shaped positioning plates contact the inner wall of the roll, thereby fixing the polymer film roll and preventing the polymer film from rotating unsteadily when unwinding, which affects the use of the polymer film. It is suitable for fixing polymer film rolls of different sizes and has strong applicability.

[0016] 2. The rotating drum is inserted into the threaded rod and fixed in position by the limit slider, the slide groove and the positioning rotating drum. The arc support plate is pushed up by the electric push rod and several balls are brought into contact with the rotating drum, thereby supporting the other end of the rotating shaft, increasing the service life of the rotating shaft and bearings. The height of the arc support plate is lowered by the electric push rod, which facilitates the replacement of polymer film rolls. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the utility model.

[0018] Figure 2 This is a structural diagram of the rotating shaft connection of the present utility model.

[0019] Figure 3 This is a structural diagram of the support assembly of the present utility model.

[0020] Figure 4 This is a structural diagram of the second positioning drum of the present utility model.

[0021] As shown in the figure: 1. Base plate; 2. Vertical plate; 3. Rotating shaft; 4. Plate-shaped articulated seat; 5. Connecting rod; 6. Arc-shaped positioning plate; 7. Push-pull rod; 8. Threaded rod; 801. Slide groove; 9. Sleeve; 10. Positioning rotating cylinder; 11. Support assembly; 12. Articulated seat 1; 13. Articulated seat 2; 14. Articulated seat 3; 15. Arc-shaped rubber pad; 16. Rotating cylinder; 1601. Limiting slider; 17. Positioning rotating cylinder 2; 1701. Threaded cylinder; 1702. Toggle rod; 18. Electric push rod; 19. Arc-shaped support plate; 20. Ball bearing. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Example 1

[0024] Combined with attachment Figure 1 A polymer film unwinding stand comprises a base plate 1, a vertical plate 2 is provided on one side of the base plate 1, a rotating shaft 3 is connected to a bearing on one side of the vertical plate 2, a pair of plate-shaped hinged seats 4 are symmetrically provided on the outside of the rotating shaft 3, a number of connecting rods 5 are hinged on the plate-shaped hinged seats 4, and the ends of the connecting rods 5 are hinged with arc-shaped positioning plates 6 with arc grooves opposite to each other, a push-pull rod 7 is hinged at one end of the inner side of the arc-shaped positioning plate 6, a threaded rod 8 is provided at the end of the rotating shaft 3, a sleeve 9 hinged to the end of the push-pull rod 7 is sleeved on the threaded rod 8, a positioning rotating cylinder 10 in contact with the outer end of the sleeve 9 is threadedly connected to the threaded rod 8, and a support assembly 11 connected to the end of the threaded rod 8 is installed on the upper end of the base plate 1.

[0025] Combined with attachment Figure 2 The inner side and one end of the inner side of the arc-shaped positioning plate 6 are respectively provided with a plurality of hinged seats 12 hinged to one end of the connecting rod 5 and a hinged seat 2 13 hinged to one end of the push-pull rod 7. The outer side of the sleeve 9 is symmetrically provided with a pair of hinged seats 14 hinged to the end of the push-pull rod 7.

[0026] Combined with the above structure, the roll of polymer film is inserted outside a pair of arc-shaped positioning plates 6, and the sleeve 9 is moved inward on the threaded rod 8 by rotating the positioning drum 10, so that the push-pull rod 7 pushes the arc-shaped positioning plate 6 to move outward under the hinged cooperation of several connecting rods 5 and the hinged seat 12, so that the pair of arc-shaped positioning plates 6 contact the inner wall of the roll, thereby fixing the polymer film roll, preventing the polymer film from rotating unstably when unwinding, affecting the use of the polymer film, and is suitable for fixing polymer film rolls of different sizes, with strong applicability.

[0027] Combined with attachment Figure 2A curved rubber pad 15 is fixed to the outside of the curved positioning plate 6 to increase the friction between the curved positioning plate 6 and the polymer film roll, so that the polymer film roll is fixed and stable.

[0028] Example 2

[0029] On the basis of embodiment 1, combined with the attached Figure 3 The support assembly 11 includes a pair of sliding grooves 801 symmetrically provided on the outside of the threaded rod 8 and passing through at one end. A rotating cylinder 16 is sleeved on the threaded rod 8, and a pair of limiting sliders 1601 slidably connected to the sliding groove 801 are provided on the inside of the rotating cylinder 16. The end of the threaded rod 8 is threadedly connected to a positioning rotating cylinder 17 that contacts one end of the outer side of the rotating cylinder 16. An electric push rod 18 is installed on the upper end of the base plate 1. An arc-shaped support plate 19 with an arc groove facing upward is fixed on the top of the electric push rod 18. A number of balls 20 that contact the outer side of the rotating cylinder 16 are rotatably connected in the arc groove of the arc support plate 19, so as to facilitate the rotation of the rotating shaft 3 on the rotating cylinder 16.

[0030] In combination with the above structure, when the support assembly 11 is in use, the rotating drum 16 is inserted into the threaded rod 8 and fixed in position through the limiting slider 1601, the slide groove 801, and the positioning rotating drum 17. The arc support plate 19 is pushed up by the electric push rod 18 and the several balls 20 contact the rotating drum 16, thereby supporting the other end of the rotating shaft 3, increasing the service life of the rotating shaft 3 and the bearing, and the height of the arc support plate 19 is lowered by the electric push rod 18 to facilitate the replacement of the polymer film roll.

[0031] Combined with attachment Figure 4 The positioning rotating cylinder 10 and the positioning rotating cylinder 2 17 have the same structure. The positioning rotating cylinder 2 17 includes a threaded cylinder 1701 threadedly connected to the threaded rod 8. A plurality of toggle rods 1702 are equidistantly arranged in an annular shape on the outer side of the threaded cylinder 1701 to facilitate rotation.

[0032] The specific usage is as follows:

[0033] Insert the roll of polymer film outside a pair of arc-shaped positioning plates 6, rotate the positioning drum 10 to make the sleeve 9 move inward on the threaded rod 8, so that the push-pull rod 7 pushes the arc-shaped positioning plate 6 to move outward under the hinged cooperation of several connecting rods 5 and the hinged seat 12, so that the pair of arc-shaped positioning plates 6 contact the inner wall of the roll, thereby fixing the polymer film roll; start the electric push rod 18 to push the arc-shaped support plate 19 upward and make several balls 20 contact the drum 16, thereby supporting the other end of the rotating shaft 3, and the polymer film can be unwound.

[0034] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A polymer film unwinding stand, comprising a bottom plate (1), a vertical plate (2) provided on one side of the bottom plate (1), a rotating shaft (3) connected to a bearing on one side of the vertical plate (2), characterized in that: A pair of plate-shaped hinge seats (4) are symmetrically provided on the outer side of the rotating shaft (3), and a plurality of connecting rods (5) are hinged on the plate-shaped hinge seats (4), and the ends of the plurality of connecting rods (5) are hinged with arc-shaped positioning plates (6) with arc grooves opposite to each other, and one end of the inner side of the arc-shaped positioning plate (6) is hinged with a push-pull rod (7), and a threaded rod (8) is provided at the end of the rotating shaft (3), and a sleeve (9) hinged to the end of the push-pull rod (7) is sleeved on the threaded rod (8), and a positioning rotating cylinder (10) in contact with one end of the outer side of the sleeve (9) is threadedly connected on the threaded rod (8), and a support assembly (11) connected to the end of the threaded rod (8) is installed on the upper end of the base plate (1).

2. The polymer film unwinding stand according to claim 1, characterized in that: The inner side and one end of the inner side of the arc-shaped positioning plate (6) are respectively provided with a plurality of hinged seats (12) hinged to one end of the connecting rod (5) and a hinged seat (13) hinged to one end of the push-pull rod (7). The outer side of the sleeve (9) is symmetrically provided with a pair of hinged seats (14) hinged to the end of the push-pull rod (7).

3. The polymer film unwinding stand according to claim 1, characterized in that: An arc-shaped rubber pad (15) is fixed on the outer side of the arc-shaped positioning plate (6).

4. The polymer film unwinding stand according to claim 1, characterized in that: The support assembly (11) includes a pair of symmetrically arranged chute (801) with one end passing therethrough on the outer side of the threaded rod (8), a rotating drum (16) is sleeved on the threaded rod (8), a pair of limiting sliders (1601) slidably connected to the chute (801) are provided on the inner side of the rotating drum (16), the end of the threaded rod (8) is threadedly connected to a positioning rotating drum (17) in contact with one end of the outer side of the rotating drum (16), an electric push rod (18) is installed on the upper end of the base plate (1), and an arc-shaped support plate (19) with an arc groove facing upward is fixed to the top of the electric push rod (18).

5. The polymer film unwinding stand according to claim 4, characterized in that: A plurality of balls (20) in contact with the outer side of the rotating drum (16) are rotatably connected in the arc groove of the arc-shaped support plate (19).

6. The polymer film unwinding stand according to claim 4, characterized in that: The positioning rotating cylinder (10) and the second positioning rotating cylinder (17) have the same structure. The second positioning rotating cylinder (17) comprises a threaded cylinder (1701) threadedly connected to the threaded rod (8). A plurality of toggle rods (1702) are equidistantly arranged in an annular shape on the outer side of the threaded cylinder (1701).

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