Film feeding mechanism of packaging machine

Abstract

The utility model discloses a film feeding mechanism of a packaging machine, which comprises a main machine part and a film discharging driving assembly, the film discharging driving assembly comprises a fixing frame, two clamping frames movably arranged on the fixing frame and a bidirectional driving mechanism used for pushing the two clamping frames to move in opposite directions or in opposite directions, each clamping frame is provided with at least one material driving mechanism, and each material driving mechanism comprises a film pressing roller rotationally installed on the corresponding clamping frame and a material driving motor used for driving the film pressing roller to rotate. The two clamping frames capable of moving oppositely guarantee that the film pressing roller continuously applies pressure to the rolled film, full contact between the film pressing roller and the rolled film is continuously guaranteed, the problem that in the prior art, the contact area between a synchronous belt and the rolled film is limited is solved, and it is guaranteed that the rolled film has continuous rotating power.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing machine technical field more specifically is a kind of film feeding mechanism of packing machine. BACKGROUND

[0002] Chinese patent discloses a kind of packing machine packaging film feeding mechanism (patent number:2019217716604), including: mainframe, including parallel vertical rack side plate;Discharge assembly, including two parallel discharge side plate, fixed in the lower end of the mainframe and extend to horizontal rear;Horizontal output platform, fixed on the upper portion of the mainframe and extend to horizontal front;Sensing detection system, fixed in mechanism, connected with the control system in mechanism. The technical solution disclosed in the Chinese patent is for the stuffing packing work of food stuffing factory, by the cooperation of discharge assembly and each part tensioner, get a output stable roll film output device, add sensor detection module, better detect the operating state of each component, improve the degree of mechanical automation, convenient to use. The discharge driving assembly of the technical solution disclosed in the Chinese patent includes a synchronous belt assembly, including synchronous belt frame and synchronous belt in synchronous belt frame, the outer surface of synchronous belt is in contact with its roll film roller, under the driving of synchronous belt, make roll film roller rotate, this is a static friction driving rotation mode, as shown in its drawing, the area of synchronous belt contact with roll film is limited, in use process, roll film membrane power will be insufficient, prone to the situation that roll film cannot rotate, therefore, it needs to be improved. UTILITY MODEL CONTENT

[0003] The main purpose of the utility model is to solve the problem of insufficient roll film membrane power, and provide a film feeding mechanism of packing machine.

[0004] The technical scheme adopted by the utility model is:

[0005] A film feeding mechanism of packing machine, including mainframe part and membrane driving assembly, the mainframe part includes discharge frame, first tensioning assembly located below the discharge frame, second tensioning assembly located above one side of the first tensioning assembly, third tensioning assembly located below the second tensioning assembly, the membrane driving assembly includes fixed frame, two clamping frames movably installed on the fixed frame and bidirectional driving mechanism for pushing the two clamping frames to move towards each other or move in reverse, at least one material driving mechanism is installed on each clamping frame, the material driving mechanism includes rotatably installed on the clamping frame pressure film roller and the material driving motor for driving the pressure film roller to rotate.

[0006] The bidirectional driving mechanism comprises two parallel guide rail pairs, a driving gear and a stepping motor, each guide rail pair comprises a guide rail and a first slider, a second slider and a third slider mounted on the guide rail, one of the clamping frames is fixed with the first slider of each guide rail pair, the other clamping frame is fixed with the third slider of each guide rail pair, the side surfaces of the first slider and the second slider of one of the guide rail pairs are connected with a first rack, the second slider and the third slider of the other guide rail pair are connected with a second rack opposite to the first rack, the driving gear is meshed between the first rack and the second rack, and the stepping motor is mounted on the fixed frame through a motor frame and the motor shaft of the stepping motor is fixed with the driving gear.

[0007] Each clamping frame comprises a fixed plate and an arc plate connected with the fixed plate as a whole, and one material driving mechanism is mounted at the two ends of the arc plate.

[0008] The beneficial effects of the utility model are as follows:

[0009] The two movable clamping frames ensure that the film pressing roller continuously applies pressure to the film roll, continuously ensures the full contact between the film pressing roller and the film roll, solves the problem that the contact area between the synchronous belt and the film roll is limited in the prior art, and ensures the continuous rotation power of the film roll. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 、 Fig. 2 It is a three-dimensional schematic view of the utility model.

[0011] Fig. 3 It is a three-dimensional schematic view of the film outlet driving assembly of the utility model. DETAILED DESCRIPTION

[0012] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.

[0013] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise.

[0015] Please refer to Figs. 1 to 3 The film feeding mechanism of the packaging machine provided by the application comprises a main machine part 10 and a film feeding driving assembly 20. The main machine part 10 comprises a discharge rack 11, a first-stage tensioning assembly 12 located below the discharge rack 11, a second-stage tensioning assembly 13 located above one side of the first-stage tensioning assembly 12, and a third-stage tensioning assembly 14 located below the second-stage tensioning assembly 14. A roll of film is placed on the discharge rack 11, and the roll of film is provided with rotary power by the film feeding driving assembly 20 to provide power for film feeding. The leading end of the roll of film is pulled by a pulling assembly inside the packaging machine. It is worth mentioning that the main machine part 10 can refer to a packaging film feeding mechanism of a packaging machine (Patent No. 2019217716604) disclosed in a Chinese patent. The focus of the application is the film feeding driving assembly 20, and therefore, the film feeding driving assembly 20 is mainly described herein.

[0016] In the embodiment, the film feeding driving assembly 20 comprises a fixed rack 21, two clamping racks 22 movably installed on the fixed rack 21, and a bidirectional driving mechanism 23 for pushing the two clamping racks 22 to move towards each other or move in the opposite direction. At least one material driving mechanism 24 is installed on each clamping rack 22. The material driving mechanism comprises a film pressing roller 241 rotatably installed on the clamping rack 22 and a material driving motor 242 for driving the film pressing roller 241 to rotate. The film pressing roller 241 is in contact with the roll of film. The rotation of the film pressing roller 241 drives the roll of film to rotate on the discharge rack 11, achieving the purpose of film feeding. After the roll of film is continuously fed, the diameter of the roll of film gradually decreases. The clamping racks 22 are moved towards each other to continuously ensure the contact between the film pressing roller 241 and the roll of film, solving the problem that the area of contact between the current technology and the roll of film is limited by the synchronous belt, and ensuring that the roll of film has continuous rotary power.

[0017] The bidirectional driving mechanism 23 comprises two parallel guide rail pairs 231, a driving gear 232 and a stepping motor 233 which are installed on the fixed frame 21, each guide rail pair 231 comprises a guide rail 231 and a first slider 2312, a second slider 2313 and a third slider 2314 which are installed on the guide rail 231, one clamping frame 22 is fixed with the first slider 2312 of each guide rail pair 231, and the other clamping frame 22 is fixed with the third slider 2314 of each guide rail pair 231, the side surfaces of the first slider 2312 and the second slider 2313 of one guide rail pair 231 are connected with a first rack 2315, the second slider 2313 and the third slider 2314 of the other guide rail pair 231 are connected with a second rack 2316 which is opposite to the first rack 2315, the driving gear 232 is engaged between the first rack 2315 and the second rack 2316, the stepping motor 2312 is installed on the fixed frame 21 through a motor frame A and the motor shaft thereof is fixed with the driving gear 232, the driving gear is driven to rotate through the stepping motor, then the first rack and the second rack are driven to move towards or reversely through the driving gear 232, so that the two clamping frames are driven to move towards or reversely on the fixed frame, when moving towards, the film pressing rod can fully contact with the film roll, and the film pressing rods on the two clamping frames can be located on the upper and lower sides of the film roll, so that the film roll can have repeated rotating force.

[0018] In some embodiments, each clamping frame 22 comprises a fixed plate 221 and an arc plate 222 which is connected with the fixed plate 221 as a whole, one material driving mechanism 24 is installed at the two ends of the arc plate 222, the four corners of the film roll can be pressed through the material driving mechanisms 24 on the two clamping frames 22, so that the output power of the film output can be ensured.

[0019] The utility model discloses want to realize, through the two movable clamping frames of the utility model, guarantee that the film pressing rod of the utility model continuously exerts pressure to the film roll, continuously guarantee that the film pressing rod fully contacts with the film roll, solve the problem that the area of contact of the synchronous belt with the film roll is limited in the current technology, and guarantee that the film roll has continuous rotating power.

[0020] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and the equivalent structure or equivalent process conversion of the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A film feeding mechanism of a packaging machine, comprising a main machine part and a film feeding driving assembly, the main machine part comprising a discharge frame, a first level tensioning assembly located below the discharge frame, a second level tensioning assembly located above one side of the first level tensioning assembly, and a third level tensioning assembly located below the second level tensioning assembly, characterized in that: The film output driving assembly comprises a fixed frame, two clamping frames movably mounted on the fixed frame, and a bidirectional driving mechanism for pushing the two clamping frames to move towards each other or to move reversely, each clamping frame is provided with at least one material driving mechanism, and the material driving mechanism comprises a film pressing roller rotatably mounted on the clamping frame and a material driving motor for driving the film pressing roller to rotate.

2. A film feed mechanism for a packaging machine as claimed in claim 1, characterized in that The bidirectional driving mechanism comprises two parallel guide rail pairs, a driving gear and a stepping motor, each guide rail pair comprises a guide rail and a first sliding block, a second sliding block and a third sliding block mounted on the guide rail, one clamping frame is fixed with the first sliding block of each guide rail pair, and the other clamping frame is fixed with the third sliding block of each guide rail pair, the side surfaces of the first sliding block and the second sliding block of one guide rail pair are connected with a first rack, the second sliding block and the third sliding block of the other guide rail pair are connected with a second rack opposite to the first rack, the driving gear is engaged between the first rack and the second rack, and the stepping motor is mounted on the fixed frame through a motor frame and its motor shaft is fixed with the driving gear.

3. A film feed mechanism for a packaging machine as claimed in claim 1, characterized in that Each clamping frame comprises a fixed plate and an arc plate connected with the fixed plate as a whole, and each end of the arc plate is provided with one material driving mechanism.

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