Transparent PE film stretching device

Abstract

The utility model relates to a transparent PE (Poly Ethylene) film stretching device, which belongs to the field of transparent PE films and comprises a bottom plate, a positioning mechanism is arranged on the front surface of the bottom plate, an electric push rod is fixed on the front surface of the bottom plate, a heating mechanism is arranged on the front surface of the bottom plate, and a connecting block is fixed on the outer side of an output shaft of the electric push rod. According to the transparent PE film stretching device, one end of a transparent PE film is placed between the two positioning rollers on the right side, then the rocker is rotated, the two threaded rods on the right side start to rotate, one end of the transparent PE film is fixedly clamped through the two positioning rollers, the other end of the transparent PE film is fixed by rotating the rocker on the left side, and the purpose of rapidly fixing the transparent PE film is achieved; the electric push rod is started to slowly stretch the transparent PE film, the fan is started to suck outside air into the heating box, dust is filtered out by the filter plate, and the transparent PE film is heated through a plurality of air holes formed in the front face of the filter plate, so that the transparent PE film is prevented from being torn.

Description

Technical Field

[0001] The utility model relates to the technical field of transparent PE films, and specifically relates to a stretching device for transparent PE films. Background Technique

[0002] PE protective film is the simplest macromolecular organic compound in structure and the most widely used macromolecular material in the world today. The PE protective film is based on a special polyethylene plastic film and is divided into high-density polyethylene protective film, medium-density polyethylene, and low-density polyethylene according to different densities. An automatic stretching device is required in the processing process of PE films.

[0003] For example, a PE film automatic stretching device is disclosed in Chinese Patent CN 212826802 U, which includes a fixed base. A support rod is arranged at the upper end of the fixed base, a workbench is arranged at the upper end of the support rod, a distribution box is installed on the upper end of the workbench, a fixed cylinder is installed inside the workbench, a push rod is connected to the front end of the fixed cylinder, a fixing plate is arranged at the front end of the push rod, a fixed backing plate is arranged at the upper end of the fixing plate, a second connecting groove is opened inside the fixed backing plate, a rotating shaft is installed at the upper end of the fixed backing plate, a movable plate is arranged at the upper end of the rotating shaft, a first pressing plate is arranged at one end of the movable plate, and first connecting grooves are opened inside the first pressing plate and the movable plate. A fixing screw is connected inside the first connecting groove.

[0004] The above-mentioned PE film automatic stretching device still has certain deficiencies. It fixes the fixing screw through the first connecting groove and inside the second connecting groove to fix the fixing screw, so that the first pressing plate can be pressed against the fixed backing plate, thereby pressing the film. However, fixing the PE film with screws is relatively cumbersome, and if the PE film is located below the screw, the screw is likely to damage the PE film, reducing the practicality of the PE film automatic stretching device. Therefore, this application proposes a stretching device for transparent PE films to solve the above problems. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a stretching device for transparent PE films, which has the advantage of being convenient for fixing the PE film, and solves the problems that it is relatively cumbersome to fix the PE film with screws and that if the PE film is located below the screw, the screw is likely to damage the PE film.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A stretching device for transparent PE films, including a bottom plate, a positioning mechanism is arranged on the front surface of the bottom plate, an electric push rod is fixed on the front surface of the bottom plate, a heating mechanism is arranged on the front surface of the bottom plate, and a connecting block is fixed on the outer side of the output shaft of the electric push rod;

[0007] The positioning mechanism includes two boxes slidably connected to the front of the bottom plate. Between the back wall and the front wall of the inner cavities of the two boxes, there are rotatably connected threaded rods. On the outer sides of the two threaded rods, there are two movable sleeves connected by threaded holes. Between the upper and lower movable sleeves, there are two positioning rollers fixed. On the front of the two threaded rods, there are connecting rods fixed. On the outer sides of the two connecting rods, there is a same belt connected by transmission wheels.

[0008] The heating mechanism includes a blower fixed to the front of the bottom plate. The air suction end of the blower is communicated with an air suction pipe. On the front of the bottom plate, there is a heating box fixed. On the right side of the heating box, there is a filter plate fixed. The air exhaust end of the blower is communicated with an air exhaust pipe. On the front of the bottom plate, there is a heating plate installed.

[0009] Furthermore, two sliding grooves are opened on the front of the bottom plate. On the back sides of the two boxes, there are sliders fixed and slidably connected to the sliding grooves.

[0010] Furthermore, the connecting block is fixed to the lower surface of the lower box. On the front of the upper connecting rod, there is a rocker fixed.

[0011] Furthermore, the two threaded rods are each composed of two screws with opposite thread directions. Adjacent two movable sleeves are respectively threadedly connected to the outer sides of adjacent two screws.

[0012] Furthermore, the number of the positioning mechanisms is two. The right-side positioning mechanism is installed on the front of the bottom plate and close to the right side of the bottom plate.

[0013] Furthermore, a plurality of air-permeable holes are opened on the front of the heating plate. The end of the air exhaust pipe away from the blower is communicated with the lower surface of the heating plate.

[0014] Furthermore, the end of the air suction pipe away from the blower is communicated with the left side of the heating box. Inside the heating box, there is an electric heating wire installed.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0016] 1. For this transparent PE film stretching device, place one end of the transparent PE film between the two right-side positioning rollers. Then rotate the rocker, so that the two right-side threaded rods start to rotate, and the two positioning rollers start to move relatively. Use the two positioning rollers to fixedly clamp one end of the transparent PE film. Then fix the other end of the transparent PE film by rotating the left-side rocker, achieving the purpose of quickly fixing the transparent PE film.

[0017] 2. For this transparent PE film stretching device, start the electric push rod to slowly stretch the transparent PE film. Start the fan to draw external air into the heating box and filter the dust through the filter plate. Then, transmit the heated air to the inside of the heating plate through the exhaust duct, and heat the transparent PE film through multiple air vents opened on its front surface to prevent the transparent PE film from being torn. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of the present utility model;

[0019] Figure 2 is a left view of the positioning mechanism of the present utility model;

[0020] Figure 3 is a schematic view of the heating mechanism of the present utility model;

[0021] Figure 4 is a three-dimensional view of the structure of the heating plate of the present utility model.

[0022] In the figure: 1 bottom plate, 2 positioning mechanism, 201 box body, 202 threaded rod, 203 movable sleeve, 204 positioning roller, 205 connecting rod, 206 belt, 3 electric push rod, 4 heating mechanism, 401 fan, 402 air extraction duct, 403 heating box, 404 filter plate, 405 exhaust duct, 406 heating plate, 5 connecting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1 , a transparent PE film stretching device in this embodiment includes a bottom plate 1. A positioning mechanism 2 is provided on the front surface of the bottom plate 1. An electric push rod 3 is fixed on the front surface of the bottom plate 1. A heating mechanism 4 is provided on the front surface of the bottom plate 1. A connecting block 5 is fixed on the outer side of the output shaft of the electric push rod 3.

[0025] Please refer to Figure 2, in order to quickly fix the transparent PE film, the positioning mechanism 2 in this embodiment includes two boxes 201 slidably connected to the front of the bottom plate 1. Between the back wall and the front wall of the inner cavities of the two boxes 201, threaded rods 202 are rotatably connected. On the outer sides of the two threaded rods 202, two movable sleeves 203 are connected by threaded holes. Between the upper and lower movable sleeves 203, two positioning rollers 204 are fixed. On the front of the two threaded rods 202, connecting rods 205 are fixed. On the outer sides of the two connecting rods 205, the same belt 206 is connected by transmission wheels.

[0026] In this example, the number of the positioning mechanisms 2 is two. The right positioning mechanism 2 is installed on the front of the bottom plate 1 and close to the right side of the bottom plate 1. Two chutes are opened on the front of the bottom plate 1. On the back sides of the two boxes 201, sliders slidably connected to the chutes are fixed. The connecting block 5 is fixed to the lower surface of the lower box 201. On the front of the upper connecting rod 205, a rocker is fixed. Place one end of the transparent PE film between the two right positioning rollers 204, and then rotate the rocker to make the two right threaded rods 202 start to rotate, and make the two positioning rollers 204 start to move relatively, and use the two positioning rollers 204 to fixedly clamp one end of the transparent PE film. The two threaded rods 202 are each composed of two screws with opposite thread directions. The adjacent two movable sleeves 203 are respectively threadedly connected to the outer sides of the adjacent two screws. Fix the other end of the transparent PE film by rotating the left rocker to achieve the purpose of quickly fixing the transparent PE film.

[0027] It should be noted that place one end of the transparent PE film between the two right positioning rollers 204, and then rotate the rocker to make the two right threaded rods 202 start to rotate, and make the two positioning rollers 204 start to move relatively, and use the two positioning rollers 204 to fixedly clamp one end of the transparent PE film. Then fix the other end of the transparent PE film by rotating the left rocker to achieve the purpose of quickly fixing the transparent PE film.

[0028] Please refer to Figures 3 - 4 , in order to heat the transparent PE film, the heating mechanism 4 in this embodiment includes a blower 401 fixed to the front of the bottom plate 1. The air suction end of the blower 401 is communicated with an air suction pipe 402. A heating box 403 is fixed to the front of the bottom plate 1. A filter plate 404 is fixed to the right side of the heating box 403. The air exhaust end of the blower 401 is communicated with an air exhaust pipe 405. A heating plate 406 is installed on the front of the bottom plate 1. After fixing the left and right ends of the transparent PE film, start the electric push rod 3 to make the transparent PE film start to be slowly stretched.

[0029] In this embodiment, a plurality of air vents are provided on the front surface of the heating plate 406. An electric heating wire is installed inside the heating box 403. The electric heating wire is a resistance wire that can withstand high temperatures and has a large heat output and is specifically used for generating heat. The main function of the electric heating wire is to generate heat and heat the air inside the heating box 403. One end of the exhaust duct 405 far from the blower 401 is connected to the lower surface of the heating plate 406. The electric heating wire is energized to heat the air inside the heating box 403. The blower 401 is started to draw outside air into the heating box 403 and filter dust by the filter plate 404. One end of the air extraction duct 402 far from the blower 401 is connected to the left side of the heating box 403. The heated air is transmitted to the inside of the heating plate 406 through the exhaust duct 405 and the transparent PE film is heated through the plurality of air vents provided on its front surface, avoiding the transparent PE film from being torn.

[0030] It should be noted that the electric push rod 3 is started to slowly stretch the transparent PE film. The blower 401 is started to draw outside air into the heating box 403 and filter dust by the filter plate 404. Subsequently, the heated air is transmitted to the inside of the heating plate 406 through the exhaust duct 405 and the transparent PE film is heated through the plurality of air vents provided on its front surface, avoiding the transparent PE film from being torn.

[0031] It can be understood that the electrical components appearing in the text are all electrically connected to the main controller and the power supply, and the electrical components appearing in the text are all conventional known devices. This application will not elaborate too much. The main controller can be a conventional known device such as a computer that plays a control role. The control circuit of the main controller can be realized by simple programming by those skilled in the art. The provision of the power supply also belongs to the common knowledge in the art. And this utility model is mainly used to protect mechanical devices, so this utility model will not explain the control method and circuit connection in detail. At the same time, for the parts not described in detail in this utility model, they are all well-known technologies to those skilled in the art.

[0032] In the description of this utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0033] The working principle of the above embodiment is as follows:

[0034] (1) When the transparent PE film stretching device needs to be used, place one end of the transparent PE film between the two positioning rollers 204 on the right side. Then rotate the rocker, causing the two threaded rods 202 on the right side to start rotating and the two positioning rollers 204 to start moving relative to each other. Use the two positioning rollers 204 to fixedly clamp one end of the transparent PE film. Then fix the other end of the transparent PE film by rotating the left rocker, achieving the purpose of quickly fixing the transparent PE film.

[0035] (2) After fixing the left and right ends of the transparent PE film, start the electric push rod 3 to slowly stretch the transparent PE film. At this time, energize the heating wire and heat the air in the heating box 403. Start the fan 401 to draw in outside air into the heating box 403 and filter the dust by the filter plate 404. Then transmit the heated air to the inside of the heating plate 406 through the exhaust duct 405 and heat the transparent PE film through the multiple ventilation holes opened on its front surface, preventing the transparent PE film from being torn.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A transparent PE film stretching device, comprising a bottom plate (1), characterized in that: A positioning mechanism (2) is provided on the front of the base plate (1), an electric push rod (3) is fixed on the front of the base plate (1), a heating mechanism (4) is provided on the front of the base plate (1), and a connecting block (5) is fixed on the outer side of the output shaft of the electric push rod (3); The positioning mechanism (2) comprises two boxes (201) slidably connected to the front of the bottom plate (1); threaded rods (202) are rotatably connected between the back wall and the front wall of the inner cavity of the two boxes (201); two movable sleeves (203) are connected to the outer sides of the two threaded rods (202) through threaded holes; two positioning rollers (204) are fixed between the movable sleeves (203) on the upper and lower sides; connecting rods (205) are fixed to the front of the two threaded rods (202); and the outer sides of the two connecting rods (205) are connected to the same belt (206) through a transmission wheel. The heating mechanism (4) comprises a fan (401) fixed on the front side of the base plate (1); the exhaust end of the fan (401) is connected to an exhaust pipe (402); a heating box (403) is fixed on the front side of the base plate (1); a filter plate (404) is fixed on the right side of the heating box (403); the exhaust end of the fan (401) is connected to an exhaust pipe (405); and a heating plate (406) is installed on the front side of the base plate (1).

2. A transparent PE film stretching device according to claim 1, characterized in that: Two sliding grooves are provided on the front side of the bottom plate (1), and sliding blocks slidably connected to the sliding grooves are fixed on the back sides of the two boxes (201).

3. A transparent PE film stretching device according to claim 1, characterized in that: The connecting block (5) is fixed on the lower surface of the lower box body (201), and a rocker is fixed on the front side of the upper connecting rod (205).

4. A transparent PE film stretching device according to claim 1, characterized in that: The two threaded rods (202) are each composed of two screw rods with opposite thread directions, and two adjacent movable sleeves (203) are respectively threadedly connected to the outer sides of the two adjacent screw rods.

5. A transparent PE film stretching device according to claim 1, characterized in that: The number of the positioning mechanisms (2) is two, and the right positioning mechanism (2) is installed on the front side of the base plate (1) and close to the right side of the base plate (1).

6. A transparent PE film stretching device according to claim 1, characterized in that: The front side of the heating plate (406) is provided with a plurality of air holes, and one end of the exhaust pipe (405) away from the fan (401) is connected to the lower surface of the heating plate (406).

7. A transparent PE film stretching device according to claim 1, characterized in that: One end of the exhaust pipe (402) away from the fan (401) is connected to the left side of the heating box (403), and a heating wire is installed inside the heating box (403).

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