PE wrapping film guiding, conveying and tensioning adjusting frame

Abstract

The utility model relates to a PE (Poly Ethylene) wrapping film guiding, conveying and tensioning adjusting frame, which is arranged on a PE wrapping film conveying frame and is characterized by comprising a connecting shaft, a tensioning cylinder body, a guide roller group and a driving module, the tensioning barrel is adjusted and driven by the driving module, the eccentric tensioning barrel can adjust the pressure applied to the PE wrapping film by the guide roller unit under the driving of the driving module, and the PE wrapping film is in a stable state in the conveying process and is not prone to breakage caused by instantaneous acting force. According to the guiding, conveying and tensioning adjusting frame for the PE wrapping film, an additional balance weight structure does not need to be installed, the tensioning force can be adjusted only by manually driving and rotating the tensioning barrel to enable the different guiding roller units on the outer contour of the tensioning barrel to make contact with the PE wrapping film, and operation is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of PE stretch film production, in particular to a PE stretch film guiding, conveying, tensioning and adjusting frame. Background Art

[0002] In general, PE stretch film is transported on a frame during production, and multiple guide rollers are used for support and guidance. At the same time, in order to ensure the tension of the PE stretch film during transportation, a tensioning adjustment frame needs to be set on the conveying path of the PE stretch film. The tensioning adjustment frame of the general PE stretch film adopts a roller group structure with self-weight tensioning, that is, a guide roller is connected to a freely swinging connecting arm, and then the PE stretch film is tensioned by the self-weight of the guide roller. This tensioning adjustment method has some disadvantages. The self-weight tensioning method is difficult to control the weight of the guide roller, and the guide roller is easily over-tensioned to break the PE stretch film. In addition, the self-weight tensioning of the guide roller requires additional increase or decrease of operating loads such as counterweights, and the stability is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a PE wrap film guiding, conveying and tensioning adjustment frame, which can solve the problems of generally using a guide roller installed on a freely swinging connecting arm to tension the PE wrap film by the guide roller's own weight, requiring the addition or subtraction of counterweights, being troublesome to adjust, and having poor stability.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a PE wrap film guide conveying tension adjustment frame, which is installed on the PE wrap film conveying frame, and its innovation lies in: comprising a connecting shaft, a tensioning cylinder, a guide roller group and a driving module;

[0005] The connecting shaft is horizontally arranged and vertically fixedly connected to the PE wrapping film conveying frame;

[0006] The tensioning cylinder is in a cylindrical structure, and circular sealing plates are provided at both ends of the tensioning cylinder, and an axial hole is opened on the circular sealing plate at a position offset from the center of the circle, and the axial hole at the circular sealing plate at the end of the tensioning cylinder is installed on the connecting shaft through a slewing bearing, and the end of the connecting shaft extends out of the end of the tensioning cylinder; a plurality of ear plates are provided along the circumferential direction at positions near the two ends on the outer contour of the tensioning cylinder;

[0007] The guide roller group includes a plurality of guide roller units, and the guide roller units are arranged parallel to the tensioning cylinder. A rotary shaft is arranged at the end of the guide roller unit, and the rotary shaft is connected to the ear plate on the outer contour of the tensioning cylinder through a bearing.

[0008] The driving module includes a rotating block, a pry bar and a positioning block; the rotating block is fixedly arranged on a circular sealing plate at one end of the tensioning cylinder, and the rotating block rotates with the tensioning cylinder; a pry bar is hinged on the rotating block perpendicular to the axial direction of the connecting shaft, the pry bar can rotate around the hinge, and the pry bar can drive the rotating block and thus drive the tensioning cylinder to rotate around the connecting shaft; the positioning block is arranged on the connecting shaft, and the positioning block is located on the outer side of the circular sealing plate at the end of the tensioning cylinder; a plurality of positioning grooves are arranged on the positioning block along the circumference, and the end of the pry bar can be embedded in the positioning groove of the positioning block on the connecting shaft to realize the fixation of the tensioning cylinder after it rotates around the connecting shaft.

[0009] Furthermore, a torsion spring is provided at the hinge between the pry bar and the rotating block, and the torsion force of the torsion spring keeps the end of the pry bar pressed tightly in the positioning groove of the positioning block.

[0010] Furthermore, a PE wrapping film input roller and a PE wrapping film output roller are respectively arranged on both sides of the tensioning cylinder on the PE wrapping film conveying frame.

[0011] Furthermore, the guide roller unit is a hollow roller structure, and anti-slip protrusions are arranged on the surface of the guide roller unit to increase the friction between the guide roller unit and the surface of the PE wrapping film.

[0012] The advantages of the utility model are:

[0013] 1) In the utility model, a plurality of guide roller units are arranged on the outer side of the tensioning cylinder, so that the tensioning cylinder is prevented from directly contacting with the PE stretch film, the contact area is reduced, the friction area is reduced, and the surface of the PE stretch film is better protected; in addition, the tensioning cylinder is adjusted and driven by a driving module, and the eccentric tensioning cylinder can adjust the pressure applied by the guide roller unit to the PE stretch film under the drive of the driving module, so that the PE stretch film is in a stable state during the conveying process and is not easily broken by the instantaneous force; the PE stretch film guide conveying tensioning adjustment frame does not need to install an additional counterweight structure, and the tensioning force can be adjusted by manually driving the rotating tensioning cylinder to make different guide roller units on the outer contour of the tensioning cylinder contact with the PE stretch film, and the operation is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a structural schematic diagram of a PE wrapping film guiding, conveying, tensioning and adjusting frame of the utility model.

[0016] Figure 2 It is a three-dimensional schematic diagram of the assembly state of a drive module and a tensioning cylinder of a PE wrapping film guide conveying tensioning adjustment frame of the utility model. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] like Figure 1 Figure 2 The illustrated embodiment is a PE wrapping film guiding and conveying tensioning and adjusting frame, which is installed on a PE wrapping film conveying frame 1 and comprises a connecting shaft 2, a tensioning cylinder 3, a guide roller group 4 and a driving module 5.

[0020] In this embodiment, the connecting shaft 2 is horizontally arranged and vertically fixedly connected to the PE wrapping film conveying frame 1 .

[0021] In this embodiment, the tensioning cylinder 3 is a cylindrical structure, and circular sealing plates are provided at both ends of the tensioning cylinder 3, and an axial hole is opened on the circular sealing plate at a position offset from the center of the circle. The axial hole at the circular sealing plate at the end of the tensioning cylinder 3 is installed on the connecting shaft 2 through a rotary bearing, and the end of the connecting shaft 2 extends out of the end of the tensioning cylinder 3; a plurality of ear plates are provided along the circumferential direction at positions near the two ends on the outer contour of the tensioning cylinder 3.

[0022] In this embodiment, the guide roller group 4 includes a plurality of guide roller units 41, and the guide roller units 41 are arranged parallel to the tensioning cylinder 3. A rotating shaft is arranged at the end of the guide roller unit 41, and the rotating shaft is connected to the ear plate on the outer contour of the tensioning cylinder 3 through a bearing.

[0023] In this embodiment, the driving module 5 includes a rotating block 51, a pry bar 52 and a positioning block 53; the rotating block 51 is fixedly arranged on a circular sealing plate at one end of the tensioning cylinder 3, and the rotating block 51 rotates with the tensioning cylinder 3; a pry bar 52 is hinged on the rotating block 51 perpendicular to the axial direction of the connecting shaft 2, the pry bar 52 can rotate around the hinge, and the pry bar 52 can drive the rotating block 51 and thus drive the tensioning cylinder 3 to rotate around the connecting shaft 2; the positioning block 53 is arranged on the connecting shaft 2, and the positioning block 53 is located on the outer side of the circular sealing plate at the end of the tensioning cylinder 3; a plurality of positioning grooves are arranged on the positioning block 53 along the circumferential direction, and the end of the pry bar 52 can be embedded in the positioning groove of the positioning block 53 on the connecting shaft 2 to realize the fixation of the tensioning cylinder 2 after rotating around the connecting shaft 2.

[0024] In this embodiment, a torsion spring is provided at the hinge between the pry bar 52 and the rotating block 51 , and the end of the pry bar 52 is kept pressed tightly in the positioning groove of the positioning block 53 by the torsion force of the torsion spring.

[0025] In this embodiment, a PE wrapping film input roller 11 and a PE wrapping film output roller 12 are respectively arranged on both sides of the tensioning cylinder on the PE wrapping film conveying frame 1.

[0026] In this embodiment, the guide roller unit 41 is a hollow roller structure, and anti-slip protrusions are provided on the surface of the guide roller unit to increase the friction between the guide roller unit 41 and the surface of the PE wrapping film.

[0027] The working principle of the utility model is as follows: by arranging a plurality of guide roller units on the outer side of the tensioning cylinder, direct contact between the tensioning cylinder and the PE stretch film is avoided, the contact area is reduced, the friction area is reduced, and the surface of the PE stretch film is better protected; in addition, the tensioning cylinder is adjusted and driven by a driving module, and the eccentric tensioning cylinder can adjust the pressure applied by the guide roller units to the PE stretch film under the drive of the driving module, so that the PE stretch film is in a stable state during the conveying process and is not easily broken by instantaneous forces; the PE stretch film guiding conveying tensioning adjustment frame does not need to install an additional counterweight structure, and the tensioning force can be adjusted by manually driving the rotating tensioning cylinder to make different guide roller units on the outer contour of the tensioning cylinder contact with the PE stretch film, and the operation is very convenient.

[0028] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A PE wrap film guide conveying tensioning and adjusting frame, which is installed on a PE wrap film conveying frame, and is characterized by: It includes a connecting shaft, a tensioning cylinder, a guide roller group and a driving module; The connecting shaft is horizontally arranged and vertically fixedly connected to the PE wrapping film conveying frame; The tensioning cylinder is in a cylindrical structure, and circular sealing plates are provided at both ends of the tensioning cylinder, and an axial hole is opened on the circular sealing plate at a position offset from the center of the circle, and the axial hole at the circular sealing plate at the end of the tensioning cylinder is installed on the connecting shaft through a slewing bearing, and the end of the connecting shaft extends out of the end of the tensioning cylinder; a plurality of ear plates are provided along the circumferential direction at positions near the two ends on the outer contour of the tensioning cylinder; The guide roller group includes a plurality of guide roller units, and the guide roller units are arranged parallel to the tensioning cylinder. A rotary shaft is arranged at the end of the guide roller unit, and the rotary shaft is connected to the ear plate on the outer contour of the tensioning cylinder through a bearing. The driving module includes a rotating block, a pry bar and a positioning block; the rotating block is fixedly arranged on a circular sealing plate at one end of the tensioning cylinder, and the rotating block rotates with the tensioning cylinder; a pry bar is hinged on the rotating block perpendicular to the axial direction of the connecting shaft, the pry bar can rotate around the hinge, and the pry bar can drive the rotating block and thus drive the tensioning cylinder to rotate around the connecting shaft; the positioning block is arranged on the connecting shaft, and the positioning block is located on the outer side of the circular sealing plate at the end of the tensioning cylinder; a plurality of positioning grooves are arranged on the positioning block along the circumference, and the end of the pry bar can be embedded in the positioning groove of the positioning block on the connecting shaft to realize the fixation of the tensioning cylinder after it rotates around the connecting shaft.

2. A PE wrapping film guide conveying tensioning and adjusting frame according to claim 1, characterized in that: A torsion spring is provided at the hinged portion between the pry bar and the rotating block, and the torsion force of the torsion spring keeps the end of the pry bar pressed tightly in the positioning groove of the positioning block.

3. The PE wrapping film guide conveying tensioning and adjusting frame according to claim 1, characterized in that: The PE wrapping film conveying frame is provided with a PE wrapping film input roller and a PE wrapping film output roller on both sides of the tensioning cylinder.

4. The PE wrapping film guide conveying tensioning and adjusting frame according to claim 1, characterized in that: The guide roller unit is a hollow roller body structure, and anti-slip protrusions are arranged on the surface of the guide roller unit to increase the friction between the guide roller unit and the surface of the PE wrapping film.

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