Device for electrically controlling film winding resistance and film winding device

Abstract

The utility model discloses a device for electrically controlling film winding resistance and a film winding device.The device for electrically controlling the film winding resistance comprises a rolled film stretching mechanism used for stretching a rolled film and outputting the rolled film to an object so that the rolled film can be wound on the object. The rolled film stretching mechanism comprises a frame body, a roller arranged on the frame body and a magnetic powder brake used for controlling the torque of the roller. And the rolled film penetrates through the roller and is output to the object under the action of the rotating force of the roller. The precision of motor control and the portability of hand wheel control are compatible, the magnetic powder brake is adopted to control the rotation resistance value of the roller, so that the stretch ratio of a rolled film is changed, the structural design is low in manufacturing cost, the overall weight is reduced, the structure is compact, and later maintenance and overhaul are facilitated; the device has the advantages of low manufacturing cost, high working efficiency, high positioning precision and small occupied workshop space.

Description

TECHNICAL FIELD

[0001] The utility model relates to the packaging technical field, concretely relates to a device and film winding device of electric control film winding resistance. BACKGROUND

[0002] In the process of product packaging, the film of PE material needs to be stretched in a certain degree, because the material has good plastic deformation capacity, it can produce material toughness fracture under 350% stretching ratio in professional laboratory environment, and after proper plastic deformation, it can make the package more firm and not easy to loosen due to the elastic force.

[0003] The prior art has two ways to adjust resistance, one is to control the roller by the motor to cause high-efficiency adjustable speed reduction ratio, this way has slightly high cost and large weight. The other is traditional mechanical type, which adjusts the tightness by rotating the hand wheel left and right to increase or decrease the friction of the roller itself, this way is low in cost and light in weight, but cannot accurately adjust the required value. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art, and provides a device of electric control film winding resistance, which is convenient to operate and adjust the film stretching ratio.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A device of electric control film winding resistance, comprising a film stretching mechanism for stretching and outputting the film to an object for winding on the object, the film stretching mechanism comprising a frame, a roller arranged on the frame, and a magnetic powder brake for controlling the torque of the roller; the film passes through the roller and is output to the object under the rotation force of the roller.

[0007] Preferably, the film stretching mechanism further comprises a tension controller for adjusting the power of the magnetic powder brake.

[0008] Preferably, the film stretching mechanism further comprises a follow-up roller arranged on the frame and assisting the film stretching and outputting to the object.

[0009] Preferably, the roller comprises an inner long shaft, an outer roller sleeve sleeved on the outside of the inner long shaft, and a connecting mechanism arranged on the top of the outer roller sleeve and used for connecting with the magnetic powder brake.

[0010] Preferably, the connecting mechanism comprises a clamping flange and an upper connecting piece connected with the magnetic powder brake.

[0011] Preferably, the frame body comprises an upper end cover, a lower end cover, a frame body connecting the upper end cover and the lower end cover, and a bearing seat provided on the lower end cover for mounting the roller.

[0012] Preferably, the magnetic powder brake is mounted on the upper end cover through a carrier.

[0013] The embodiment also provides a film winding device, comprising:

[0014] A winding film seat for fixing a winding film;

[0015] A tray for carrying an object and being rotatable;

[0016] An electric control film winding resistance device for stretching the winding film on the winding film seat and outputting the winding film to the tray for winding on the object;

[0017] The electric control film winding resistance device is the electric control film winding resistance device described above.

[0018] Preferably, the electric control film winding resistance device is further fixed on a frame and is movable up and down relative to the frame.

[0019] Preferably, the winding film seat comprises a bottom film seat, a winding film intermediate shaft provided on the bottom film seat, an intermediate rotating block provided on an upper portion of the winding film intermediate shaft and movable up and down along the winding film intermediate shaft, a disc spring provided on a lower portion of the winding film intermediate shaft, and a metal spring piece provided on the winding film intermediate shaft and capable of supporting an inner hole of a winding film paper tube.

[0020] Compared with the prior art, the embodiment has the following beneficial effects:

[0021] The embodiment has the advantages of compatibility of precision of motor control and portability of hand wheel control, adoption of a magnetic powder brake to control a rotation resistance value of a roller, change of a stretching ratio of a winding film, low manufacturing cost, reduced overall weight, compact structure, convenient post-maintenance and repair, low manufacturing cost, high work efficiency, high positioning precision, and small occupied workshop space.

[0022] The embodiment will be further described below in combination with the drawings and specific examples. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiment, the drawings required in the embodiment description will be briefly introduced. Obviously, the drawings in the embodiment description are some embodiments of the embodiment, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The overall assembly schematic diagram of the device of the film winding resistance controlled by the electric control of the embodiment;

[0025] Figure 2 The magnetic powder brake device assembly schematic diagram of the device of the film winding resistance controlled by the electric control of the embodiment;

[0026] Figure 3 The roller assembly schematic diagram of the device of the film winding resistance controlled by the electric control of the embodiment;

[0027] Figure 4 The frame assembly schematic diagram of the device of the film winding resistance controlled by the electric control of the embodiment;

[0028] Figure 5 The winding film seat assembly schematic diagram of the device of the film winding resistance controlled by the electric control of the embodiment;

[0029] Reference signs:

[0030] 1-magnetic powder brake device, 11-carrier piece, 12-magnetic powder brake;

[0031] 2-roller, 21-upper connecting piece, 22-clamping flange, 23-outer roller sleeve, 24-inner long shaft;

[0032] 3-frame, 31-upper end cover, 32-frame body, 33-follower roller, 34-bearing with seat, 35-lower end cover;

[0033] 4-winding film seat, 41-intermediate rotating block, 42-winding film intermediate shaft, 43-disc spring, 44-metal spring piece, 45-bottom film seat;

[0034] 5-tension controller;

[0035] 6-frame body;

[0036] 7-tray; 71-external motor. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be described clearly and completely 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] As Figure 1 and Figure 2As shown, the embodiment is a device for controlling the winding resistance of a film, comprising a film stretching mechanism for stretching and outputting a roll of film to an object for winding on the object, the film stretching mechanism comprising a frame 3, a roller 2 arranged on the frame 3, and a magnetic powder brake 12 for controlling the torque of the roller 2; the roll of film passes through the roller 2 and is output to the object under the rotating force of the roller.

[0039] The embodiment uses a magnetic powder brake to control the rotation resistance of the roller, thereby changing the stretching ratio of the roll of film (PE film). This kind of structure design has low manufacturing cost, reduced overall weight, compact structure, and facilitates later maintenance and repair.

[0040] In order to facilitate the adjustment of the magnetic powder brake, in an embodiment, the film stretching mechanism further comprises a tension controller for adjusting the power size of the magnetic powder brake. In the embodiment, the tension controller is used in cooperation with the magnetic powder brake, and by adjusting the power knob of the tension controller, the rotation resistance of the roller can be self-defined and adjusted.

[0041] In an embodiment, as shown in the figure, Figure 4 The film stretching mechanism further comprises a follow-up roller arranged on the frame and assisting the stretching and output of the roll of film to the object. In the embodiment, the number of follow-up rollers can be several, for example, two.

[0042] In the embodiment, the roller has various structural forms, as shown in the figure, Figure 3 In an embodiment, the roller 2 comprises an inner long shaft 24, an outer roller sleeve 23 sleeved outside the inner long shaft 24, and a connecting mechanism arranged at the top of the outer roller sleeve 23 and used for connecting with the magnetic powder brake 12.

[0043] In an embodiment, the connecting mechanism comprises a clamping flange 22 and an upper connecting piece 21 connected with the magnetic powder brake 12. In the embodiment, the clamping flange can be two according to actual conditions, and is connected with the magnetic powder brake through the upper connecting piece.

[0044] In the embodiment, the frame has various structural forms, as shown in the figure, Figure 4 In an embodiment, the frame 3 comprises an upper end cover 31, a lower end cover 35, a frame body connecting the upper end cover 31 and the lower end cover 35, and a seat bearing 34 arranged on the lower end cover 35 and used for mounting the roller.

[0045] In an embodiment, the magnetic powder brake 12 is mounted on the upper end cover by the carrier 11. In this embodiment, the magnetic powder brake 12 and the carrier 11 form the magnetic powder brake device 1. In this embodiment, the carrier 11 can have various structures, for example, the carrier 11 can include a mounting portion and two ear plates at two ends of the mounting portion. The ear plates are connected to the upper end cover, and the magnetic powder brake is located between the two ear plates and mounted on the mounting portion.

[0046] The device for controlling the film winding resistance can be applied to various film winding devices. For example, as shown in Figure 1 The device for controlling the film winding resistance can be applied to various film winding devices. For example, as shown in

[0047] The winding film seat 4 for fixing the winding film;

[0048] The tray 7 for carrying the object and being rotatable;

[0049] The device for controlling the film winding resistance for stretching the winding film on the winding film seat 4 and outputting the winding film to the tray 7 for winding on the object;

[0050] The device for controlling the film winding resistance is the device for controlling the film winding resistance described above.

[0051] In operation, the object is placed on the tray 7, and the tray 7 and the placed object are rotated by the work of the external motor 71. The magnetic powder brake device 1 is pre-set to start work, for example, the tension controller 5 is pre-set to start work, and the rotation resistance of the roller 2 is changed, so that the winding film fixed on the winding film seat 4 is stretched and rotated, and the winding film reaches a stretching ratio of 200% to 300%. This can save materials and make the packaged object more solid and firm due to the material itself, thereby achieving better film winding operation.

[0052] In an embodiment, the device for controlling the film winding resistance is fixed on the frame and can be lifted and moved relative to the frame.

[0053] In this embodiment, the height of the device for controlling the film winding resistance can be adjusted to meet different needs. For example, the frame 6 can include a stand, and the frame 3 is mounted on the stand 6. The frame 3 is moved up and down by the work of the built-in motor 61.

[0054] In this embodiment, the frame 3 and the carrier 11 can be made of various materials, for example, sheet metal.

[0055] In an embodiment, the winding film seat comprises a bottom film seat 45, a winding film middle shaft 42 arranged on the bottom film seat 45, a middle rotating block 41 arranged on the upper part of the winding film middle shaft 42 and movable up and down along the winding film middle shaft 42, a disc spring 43 arranged on the lower part of the winding film middle shaft 42, and a metal spring piece 44 arranged on the winding film middle shaft 42 and capable of supporting the inner hole of the winding film paper tube. In this embodiment, the middle rotating block 41 can be adjusted to move up and down by rotating a handle, a pressure is applied to the disc spring 43, so as to compress or loosen the winding film middle shaft. The metal spring piece 44 is arranged in the inner hole of the winding film paper tube and supports the inner hole by relying on the elastic force thereof, and a plurality of metal spring pieces can be arranged, for example, four metal spring pieces.

[0056] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An apparatus for electrically controlling a wrapping film resistance, comprising a film stretching mechanism for stretching and outputting a roll film to an object to be wrapped with the roll film, characterized in that, The film stretching mechanism comprises a frame, a roller arranged on the frame, and a magnetic powder brake for controlling the torque of the roller; the film passes through the roller and is output to the object under the rotation force of the roller.

2. The apparatus of claim 1, wherein, The film stretching mechanism further comprises a tension controller for adjusting the power of the magnetic powder brake.

3. The device for controlling the film winding resistance according to claim 1 or 2, characterized in that, The film stretching mechanism further comprises a follow-up roller arranged on the frame and assisting the film stretching and output to the object.

4. The apparatus of claim 3, wherein, The roller comprises an inner long shaft, an outer roller sleeve sleeved on the outer part of the inner long shaft, and a connecting mechanism arranged on the top of the outer roller sleeve and used for connecting with the magnetic powder brake.

5. The apparatus of claim 4, wherein, The connecting mechanism comprises a clamping flange and an upper connecting piece connected with the magnetic powder brake.

6. The device for controlling the film winding resistance according to claim 4, wherein The frame comprises an upper end cover, a lower end cover, a frame body connecting the upper end cover and the lower end cover, and a bearing seat arranged on the lower end cover and used for mounting the roller.

7. The device for controlling the film winding resistance according to claim 6, characterized in that, The magnetic powder brake is mounted on the upper end cover through a carrier.

8. A film winding device, characterized by, Comprise; a winding film seat for fixing the film; a tray for bearing the object and being rotatable; an electric control film winding resistance device for stretching the film on the winding film seat and outputting to the tray for winding on the object; wherein the electric control film winding resistance device is any one of the electric control film winding resistance devices according to claims 1-7.

9. The film wrapping apparatus according to claim 8, wherein, Further comprise a frame body, and the electric control film winding resistance device is fixed on the frame body and can be lifted and moved relative to the frame body.

10. The film wrapping apparatus according to claim 8, wherein, The winding film seat comprises a bottom film seat, a winding film intermediate shaft arranged on the bottom film seat, an intermediate rotating block arranged on the upper part of the winding film intermediate shaft and being movable up and down along the winding film intermediate shaft, a disc spring arranged on the lower part of the winding film intermediate shaft, and a metal spring piece arranged on the winding film intermediate shaft and being supportable in the inner hole of the winding film paper tube.

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