Barrel film tensioning device for POF (Polyolefin Fiber) heat shrink film production

Abstract

The invention relates to the field of POF heat shrink film processing equipment, in particular to a barrel film tensioning device for POF heat shrink film production, which comprises a transmission device for supporting and transmission and a tensioning device, and the tensioning device is rotatably clamped on the front end face of the transmission device. By arranging the tensioning device, when adaptive tensioning and limiting are carried out on rolling film cylinders with different diameters, the servo motor can synchronously drive the four sets of guide gears to rotate in a meshed mode through the driving gear and the driven gear ring, so that the four sets of guide gears can rotate in a meshed mode through meshing with the transmission rack; the four groups of positioning clamping shafts are synchronously driven to perform synchronous centripetal and centrifugal displacement, so that the distance between the positioning clamping shafts and the circle center of the guide turntable is adaptively regulated and controlled, and subsequent tensioning and limiting operation adapting to rolling film cylinders with different diameters is facilitated; the adaptability of the device to tensioning and limiting of the rolling film barrels of different models and diameters is effectively improved, and meanwhile the automation degree of the device to tensioning regulation and control of the rolling film barrels is also improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shrink film processing equipment, in particular to a cylinder film tensioning device for POF heat shrink film production. BACKGROUND

[0002] POF heat shrink film is a high-performance environmentally friendly heat shrink packaging material made of linear low-density polyethylene and copolypropylene through multi-layer co-extrusion process. It has excellent physical properties and environmental characteristics, and is widely used in packaging of food, daily necessities, electronic products, medicine and other fields. After the shrink film is processed, it needs to be wound on a film cylinder for subsequent processing.

[0003] For example, a cylinder film tensioning device for heat shrink film production is disclosed in CN218261373U, which includes a bottom plate, a fixed box and a cylinder. The outer surface of the cylinder is provided with a cylinder film body, the top of the bottom plate is fixedly installed with a fixed plate, and the fixed box is provided with a tensioning assembly for tensioning according to the size of the inner diameter of the cylinder film. The cylinder film tensioning device for heat shrink film production gradually supports the inner wall of the cylinder after the tensioning assembly is adjusted, gradually tensioning the cylinder film, and can tension cylinder films of different inner diameters after adjustment, improving the use range of the cylinder film tensioning device. By setting the extension block and the mounting screw, the extension block and the supporting plate are removed by turning the mounting screw, so that the cylinder film is removed from the outside of the tensioning rod for replacement, facilitating the winding of the next cylinder film, and solving the problem that only cylinder films of a specific inner diameter can be tensioned.

[0004] Although the above-mentioned can tension cylinder films of different diameters, the precision and stability of the tensioning of the cylinder film are insufficient, and the automation degree of the above-mentioned equipment for discharging the wound cylinder film is also insufficient, so a cylinder film tensioning device for POF heat shrink film production is needed to solve the problems raised in the above-mentioned background. SUMMARY

[0005] The present application aims to provide a cylinder film tensioning device for POF heat shrink film production to solve the problems raised in the above-mentioned background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a cylinder film tensioning device for POF heat shrink film production, comprising a transmission device for supporting and transmission,

[0007] a tensioning device, the tensioning device is rotatably connected to the front end face of the transmission device, the rear part of the tensioning device is provided with a motor seat, and the rear end face of the motor seat is provided with a servo motor, and the tensioning device is used for regulation and tensioning;

[0008] The winding film cylinder is slidably arranged at the front end surface of the tensioning device, and a transmission sleeve is arranged at the middle of the inner end surface of the winding film cylinder, and four sets of positioning guide grooves are equidistantly arranged at the inner end surface of the winding film cylinder.

[0009] Preferably, the tensioning device comprises a guide turntable, a fixed gear ring is fixedly arranged at the side end surface of the guide turntable, a gear ring rotating groove is arranged at the rear end surface of the guide turntable near the center, four sets of positioning rotating grooves are equidistantly arranged at the rear of the guide turntable near the gear ring rotating groove, a limiting rotating groove is arranged at the rear end surface of the guide turntable near the outer part, a driven gear ring is rotationally connected at the middle of the rear end surface of the guide turntable, four sets of guide gears are rotationally connected at the inner end surface of the guide turntable, and a driving gear is rotationally connected at the inner end surface of the guide turntable near one of the guide gears, the inner end surface of the guide turntable is connected with a positioning device through the guide gears, a pen-shaped air cylinder is fixedly arranged at the center of the rear end surface of the guide turntable, four sets of alignment sliding grooves are equidistantly arranged at the front end surface of the guide turntable, and fixed sliding grooves are symmetrically arranged at the inner end surface of the alignment sliding grooves.

[0010] Preferably, the positioning device comprises a transmission rack, limiting sliding blocks are symmetrically arranged at the side end surface near the top of the transmission rack, and a positioning clamping shaft is fixedly arranged at the center of the upper end surface of the transmission rack.

[0011] Preferably, the transmission device comprises a positioning base, a support rotating seat is arranged at the upper end surface of the positioning base, a speed reducer motor is arranged at the bottom of the rear end surface of the positioning base, and a guide gear is arranged at the output end of the speed reducer motor.

[0012] Preferably, the winding film cylinder is slidably connected at the front part of the guide turntable through the positioning guide groove and the positioning device, so that the winding film cylinder can be conveniently and quickly disassembled, and the convenience of replacing the winding film cylinder after winding is improved.

[0013] Preferably, the driven gear ring is rotationally connected at the inner end surface of the guide turntable through the gear ring rotating groove, and the support rotating seat is rotationally connected in the inner part of the guide turntable through the limiting rotating groove, the gear ring rotating groove and the limiting rotating groove can provide sufficient limiting basis for the driven gear ring and the support rotating seat, and the stability of the driven gear ring and the support rotating seat in the locking and limiting of the guide turntable is improved.

[0014] Preferably, the four groups of guide gears are rotated and clamped in the guide turntable through the positioning turn groove, the interiors of the four groups of guide gears are in meshing connection with the driven gear rings, each group of guide gears is in meshing connection with the transmission gear rack, when transmission, the driving gear can drive the four groups of guide gears to mesh and rotate synchronously through the driven gear rings, and the four groups of positioning devices can be driven synchronously to move centripetally and centrifugally through the meshing of the four groups of guide gears with the transmission gear rack, thereby effectively improving the stability of transmission between the equipment and the stability of regulating and controlling the four groups of positioning devices.

[0015] Preferably, the transmission gear rack is slidably clamped at the inner end face of the guide turntable through the limiting sliding block and the fixed sliding groove, and the lower end face of the fixed gear ring is in meshing connection with the guide gear, thereby effectively improving the stability of subsequent winding transmission of the shrink film.

[0016] Compared with the prior art, the application has the following beneficial effects:

[0017] 1. The tensioning device is arranged, when the winding film tube with different diameters is adaptively tensioned and limited, the servo motor can drive the four groups of guide gears to mesh and rotate synchronously through the driving gear and the driven gear ring, the four groups of guide gears can drive the four groups of positioning shafts to move centripetally and centrifugally synchronously through the meshing of the four groups of guide gears with the transmission gear rack, thereby adaptively regulating and controlling the center distance of the positioning shaft relative to the guide turntable, and facilitating the subsequent tensioning and limiting operation of the winding film tube with different diameters, effectively improving the adaptability of the equipment to the winding film tube with different models and diameters, and improving the automation degree of the equipment to the winding film tube.

[0018] 2. The transmission device and the pen-shaped air cylinder are arranged, when the shrink film is automatically wound, the reduction motor can drive the tensioning device and the winding film tube to rotate synchronously through the meshing of the guide gear with the fixed gear ring, thereby automatically and quickly winding the shrink film, effectively improving the efficiency of the equipment to the shrink film, and the pen-shaped air cylinder can automatically guide the winding film tube out after winding, thereby improving the convenience and automation degree of the equipment to the winding film tube. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0020] Figure 1Split view of the main body of the application;

[0021] Figure 2 Structure schematic view of the main body of the application;

[0022] Figure 3 Split view of the tensioning device of the application;

[0023] Figure 4 Structure schematic view of the tensioning device of the application; Figure 4 Local enlarged view at I;

[0024] Figure 5 Structure schematic view of the tensioning device of the application;

[0025] Figure 6 Structure schematic view of the positioning device of the application;

[0026] Figure 7 Structure schematic view of the transmission device of the application;

[0027] Figure 8 Side view of the transmission device of the application.

[0028] In the figure: 1 - positioning guide slot, 2 - tensioning device, 3 - motor holder, 4 - servo motor, 5 - transmission device, 6 - transmission sleeve, 7 - winding film drum, 21 - driven gear ring, 22 - positioning device, 23 - guide gear, 24 - driving gear, 25 - fixed gear ring, 26 - limit rotation slot, 27 - gear ring rotation slot, 28 - pen-shaped air cylinder, 29 - positioning rotation slot, 210 - guide rotating disc, 211 - alignment sliding slot, 212 - fixed sliding slot, 221 - positioning axle, 222 - transmission rack, 223 - limit sliding block, 51 - support rotation seat, 52 - positioning base, 53 - reduction motor, 54 - guide gear. DETAILED DESCRIPTION

[0029] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without making creative efforts should belong to the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and in the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] The present application will be further described below in conjunction with the drawings.

[0032] Embodiment 1

[0033] Please refer to Figures 1-8 An embodiment provided by the present application: a cylinder film tensioning device for POF heat shrinkable film production, comprising a transmission device 5 for supporting and transmission,

[0034] The tensioning device 2 is rotatably clamped at the front end face of the transmission device 5, the rear part of the tensioning device 2 is provided with a motor clamp seat 3, and the rear end face of the motor clamp seat 3 is provided with a servo motor 4, and the tensioning device 2 is used for regulation and tensioning;

[0035] The winding film cylinder 7 is slidingly arranged at the front end face of the tensioning device 2, and the inner end face of the winding film cylinder 7 is provided with a transmission clamp sleeve 6 at the middle part, and four groups of positioning guide grooves 1 are equidistantly arranged at the inner end face of the winding film cylinder 7.

[0036] As Figure 3 , Figure 4 and Figure 5 , the tensioning device 2 comprises a guide turntable 210, the side end face of the guide turntable 210 is fixedly provided with a fixed gear ring 25, the rear end face of the guide turntable 210 is provided with a gear ring rotating groove 27 near the center, four groups of positioning rotating grooves 29 are equidistantly arranged at the rear part of the guide turntable 210 near the gear ring rotating groove 27, a limiting rotating groove 26 is arranged at the rear end face of the guide turntable 210 near the outer part, a driven gear ring 21 is rotatably clamped at the middle part of the rear end face of the guide turntable 210, four groups of guide gears 23 are rotatably clamped at the inner end face of the guide turntable 210 equidistantly, a driving gear 24 is rotatably clamped at the inner end face of the guide turntable 210 near one of the guide gears 23, the inner end face of the guide turntable 210 is connected with a positioning device 22 through the guide gears 23, a pen-shaped air cylinder 28 is fixedly arranged at the center of the rear end face of the guide turntable 210, four groups of alignment sliding grooves 211 are equidistantly arranged at the front end face of the guide turntable 210, and fixed sliding grooves 212 are symmetrically arranged at the inner end face of the alignment sliding grooves 211.

[0037] As Figure 6 , the positioning device 22 comprises a transmission rack 222, the side end face of the transmission rack 222 is symmetrically provided with a limiting sliding block 223 near the top, and a positioning clamping shaft 221 is fixedly arranged at the center of the upper end face of the transmission rack 222.

[0038] As Figure 7 and Figure 8 , the transmission device 5 comprises a positioning base 52, the upper end face of the positioning base 52 is provided with a support rotating seat 51, and a speed reducer motor 53 is arranged at the bottom of the rear end face of the positioning base 52, and a guide gear 54 is arranged at the output end of the speed reducer motor 53.

[0039] As Figure 1 , the winding film tube 7 is matched with the positioning device 22 through the positioning guide groove 1 and is slidably connected to the front part of the guide turntable 210, which can facilitate the subsequent quick and convenient disassembly of the winding film tube 7, thereby improving the convenience of subsequent replacement of the winding film tube 7 after winding.

[0040] As Figure 4 , the driven gear ring 21 is rotatably clamped to the inner end face of the guide turntable 210 through the gear ring rotating groove 27, and the support rotating seat 51 is rotatably clamped to the inside of the guide turntable 210 through the limiting rotating groove 26, and the gear ring rotating groove 27 and the limiting rotating groove 26 can provide sufficient limiting basis for the driven gear ring 21 and the support rotating seat 51, thereby improving the stability of the subsequent locking and limiting of the driven gear ring 21 and the support rotating seat 51 inside the guide turntable 210.

[0041] As Figure 3 , the four sets of guide gears 23 are rotatably clamped inside the guide turntable 210 through the positioning rotating groove 29, the inside of each set of guide gears 23 is meshingly connected with the driven gear ring 21, and each set of guide gears 23 is meshingly connected with the transmission rack 222, when transmitting, the driving gear 24 can synchronously drive the four sets of guide gears 23 to meshingly rotate through the driven gear ring 21, and at the same time, the four sets of guide gears 23 can synchronously drive the four sets of positioning devices 22 to move centripetally and centrifugally through the meshing with the transmission rack 222, effectively improving the stability of the transmission between the equipment and the stability of the regulation and control of the four sets of positioning devices 22.

[0042] As Figure 5 , the transmission rack 222 is slidably clamped to the inner end face of the guide turntable 210 through the limiting sliding block 223 and the fixed sliding groove 212, and the sliding limiting of the limiting sliding block 223 and the fixed sliding groove 212 can improve the stability of the subsequent up and down displacement of the transmission rack 222 inside the guide turntable 210, thereby improving the stability of the subsequent centrifugal and centripetal displacement regulation and control of the positioning clamping shaft 221;

[0043] The lower end surface of the fixed tooth ring 25 is in meshing connection with the guide gear 54, which can effectively improve the stability of subsequent winding transmission of the shrink film.

[0044] Working principle: Before use, the staff can dock the external transfer module with the transmission sleeve 6, which can provide sufficient limiting and locking basis for the winding film drum 7. When winding the shrink film, the staff can start the speed reducer motor 53, which can drive the guide gear 54 to rotate. When the guide gear 54 rotates, it can drive the guide turntable 210 to rotate in a circle through meshing with the fixed tooth ring 25. At the same time, the guide turntable 210 can drive the winding film drum 7 to rotate through the four sets of positioning devices 22, so that the winding film drum 7 can wind the shrink film. If it is necessary to tension and position the winding film drum 7 with different diameters, the staff can start the servo motor 4, which can drive the driving gear 24 to rotate, and the driving gear 24 can drive the driven gear ring 21 at the bottom to mesh and rotate. At the same time, the driven gear ring 21 can synchronously drive the four sets of guide gears 23 to mesh and rotate, and the four sets of guide gears 23 can drive the four sets of positioning shafts 221 to move centripetally and centrifugally with the center of the guide turntable 210 as the center through meshing with the transmission rack 222, so as to conveniently position and lock the winding film drum 7 with different diameters. When the winding film drum 7 completes winding the shrink film, the pen-shaped air cylinder 28 is started, the transfer module is separated from the winding film drum 7 side first, and then the pen-shaped air cylinder 28 can push the winding film drum 7 to move outward, which is convenient for subsequent feeding of a new set of winding film drums 7.

[0045] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tubular film tensioning device for POF heat shrink film production, comprising a transmission device (5) for supporting and transmitting, characterized in that: A tensioning device (2), the tensioning device (2) is rotatably connected to the front end face of the transmission device (5), a motor holder (3) is provided at the rear of the tensioning device (2), and a servo motor (4) is provided at the rear end face of the motor holder (3), and the tensioning device (2) is used for regulating and tensioning; A film winding cylinder (7) is slidably arranged on the front end surface of the tensioning device (2), and a transmission sleeve (6) is arranged at the middle of the inner end surface of the film winding cylinder (7), and four groups of positioning guide grooves (1) are equidistantly arranged on the inner end surface of the film winding cylinder (7).

2. The tubular film tensioning device for POF heat shrink film production according to claim 1, characterized in that: The tensioning device (2) comprises a guide turntable (210), a fixed gear ring (25) is fixedly provided on the side end surface of the guide turntable (210), a gear ring rotation groove (27) is provided near the center of the rear end surface of the guide turntable (210), four groups of positioning rotation grooves (29) are provided at equal intervals near the rear end of the guide turntable (210) near the gear ring rotation groove (27), a limiting rotation groove (26) is provided near the outside of the rear end surface of the guide turntable (210), a driven gear ring (21) is rotatably engaged at the middle of the rear end surface of the guide turntable (210), and a positioning groove (29) is provided at the rear end of the guide turntable (210). ) is equidistantly rotatably engaged with four groups of guide gears (23), and a driving gear (24) is rotatably engaged with the inner end surface of the guide turntable (210) near one of the groups of guide gears (23). The inner end surface of the guide turntable (210) is meshedly connected with a positioning device (22) through the guide gears (23). A pen-shaped cylinder (28) is fixedly provided at the center of the rear end surface of the guide turntable (210). Four groups of alignment slots (211) are equidistantly opened on the front end surface of the guide turntable (210), and fixed slots (212) are symmetrically opened on the inner end surfaces of the alignment slots (211).

3. The tubular film tensioning device for POF heat shrink film production according to claim 2, characterized in that: The positioning device (22) comprises a transmission rack (222), a limiting slider (223) is symmetrically arranged near the top of the side end surface of the transmission rack (222), and a positioning clamping shaft (221) is fixedly arranged at the center of the upper end surface of the transmission rack (222).

4. The tubular film tensioning device for POF heat shrink film production according to claim 3, characterized in that: The transmission device (5) includes a positioning base (52), the upper end surface of the positioning base (52) is provided with a supporting swivel seat (51), and a reduction motor (53) is provided at the bottom of the rear end surface of the positioning base (52), and a guide gear (54) is provided at the output end of the reduction motor (53).

5. The tubular film tensioning device for POF heat shrink film production according to claim 4, characterized in that: The film winding cylinder (7) is adapted to the positioning device (22) through the positioning guide groove (1) and is then slidably connected to the front of the guide turntable (210).

6. The tubular film tensioning device for POF heat shrink film production according to claim 5, characterized in that: The driven gear ring (21) is rotatably engaged with the inner end surface of the guide turntable (210) through the gear ring rotation groove (27), and the supporting rotating seat (51) is rotatably engaged with the interior of the guide turntable (210) through the limiting rotation groove (26).

7. The tubular film tensioning device for POF heat shrink film production according to claim 6, characterized in that: The four groups of guide gears (23) are all rotated and clamped inside the guide turntable (210) through the positioning groove (29), and the interiors of the four groups of guide gears (23) are all meshed with the driven gear ring (21), and each group of guide gears (23) is meshed with the transmission rack (222).

8. The tubular film tensioning device for POF heat shrink film production according to claim 7, characterized in that: The transmission rack (222) is adapted to the fixed sliding groove (212) through the limiting slider (223) and then slidably engaged with the inner end surface of the guide turntable (210), and the lower end surface of the fixed gear ring (25) is meshedly connected with the guide gear (54).

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