Thin film transverse stretching mechanism

Abstract

The utility model relates to the technical field of film processing, in particular to a transverse film stretching mechanism which comprises a rack, a feeding roller set arranged on one side of the top of the rack, a preheating roller set arranged on one side of the feeding roller set, and an adjusting roller set arranged on the side, away from the feeding roller set, of the preheating roller set. A stretching assembly is arranged on the side, away from the preheating roller set, of the adjusting roller set, a leveling roller set is arranged on the side, away from the adjusting roller set, of the stretching assembly, a traction roller set is arranged on the side, away from the stretching assembly, of the leveling roller set, and a heating assembly is arranged on the rack. The heating assembly comprises a fan, and the output end of the fan is fixedly connected with a connecting pipe. Compared with the prior art, the film transverse stretching mechanism has the advantages that by arranging the heating assembly, the film which is transversely stretched is heated while the film is transversely stretched, so that the stretching effect of the film in the transverse stretching process is uniform, the balance of the surface of the stretched film is improved, and the quality of the film is improved. Therefore, the bow effect of the stretched film is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of film processing, in particular to a film transverse stretching mechanism. Background Art

[0002] Biaxially oriented film is generally a multi-layer co-extruded film, which is made by co-extruding plastic particles into sheets and then stretching them in both the longitudinal and transverse directions. The wide application of the film, low pollution and protection of forest natural resources make it a more popular packaging material than paper; the simple and reliable manufacturing process and reasonable price make it a commonly used packaging material.

[0003] When producing and processing films, it is usually necessary to use a stretching machine to stretch the film transversely and longitudinally to make the film have a uniform thickness. When the film is stretched transversely, a transverse stretching device is required.

[0004] A film transverse stretching device disclosed in Chinese patent CN209832582U includes a body, a guide roller is provided at one end of the body, a transfer roller is provided at the other end of the body, a transverse stretching device is provided between the guide roller and the transfer roller, and the transverse stretching device includes a spacing adjustment device, a front connecting plate, a rear connecting plate, a transmission device A and a transmission device B. The spacing adjustment device is connected to the body, and is connected to the body through a rotating shaft through one end of the front connecting plate and one end of the rear connecting plate, and the other end of the front connecting plate and the other end of the rear connecting plate are respectively connected to the spacing adjustment device.

[0005] However, compared with the prior art and the comparative scheme, it can be seen that the film transverse stretching device still has the following problems during actual use:

[0006] The film transverse stretching device, during the process of transverse stretching the film, only relies on the transmission device to mechanically stretch the film, which makes the stretching effect of the film uneven during transverse stretching, the balance of the film surface is poor, and further makes the heat shrinkage rate of the diagonal line of the film inconsistent. When used to make packaging bags, the film will curl up at both ends after being heated (that is, the bow effect of the film), and ultimately cannot meet the user's usage requirements.

[0007] Therefore, the present application proposes a film transverse stretching mechanism to solve the above problems. Utility Model Content

[0008] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0009] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a film transverse stretching mechanism.

[0010] The purpose of the utility model is achieved through the following technical solutions: a film transverse stretching mechanism, comprising a frame, a feeding roller group is arranged on one side of the top of the frame, a preheating roller group is arranged on one side of the feeding roller group, an adjusting roller group is arranged on the side of the preheating roller group away from the feeding roller group, a stretching assembly is arranged on the side of the adjusting roller group away from the preheating roller group, a leveling roller group is arranged on the side of the stretching assembly away from the adjusting roller group, a traction roller group is arranged on the side of the leveling roller group away from the stretching assembly, and a heating assembly is arranged on the frame;

[0011] The heating assembly includes a fan, the output end of the fan is fixedly connected to a connecting pipe, the end of the connecting pipe away from the fan is fixedly connected to a connecting shell, an air outlet is opened on the connecting shell, a heater is arranged on one side of the connecting shell, a heating wire is arranged at the output end of the heater, and the heating wire is located inside the connecting shell.

[0012] Preferably, the stretching assembly includes a connecting frame, a connecting cover is provided on the top of the connecting frame, a power piece is fixedly mounted on the connecting frame, a transmission wheel is provided at the output end of the power piece, a transmission chain is provided on the transmission wheel, the transmission wheel is connected to a driven wheel via a transmission chain, the transmission wheel and the driven wheel are both rotatably connected to the connecting frame, and a clamp is provided on the transmission chain.

[0013] Preferably, there are two stretching assemblies, which are symmetrically distributed on the top of the frame, and the heating assembly is located between the two stretching assemblies.

[0014] Preferably, the fan and the heater are both fixedly mounted on the frame.

[0015] Preferably, the connecting shell is located on the top of the frame, and the connecting shell is located below between the two stretching components.

[0016] Preferably, the connecting frame is fixedly connected to the top of the frame.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The film transverse stretching mechanism is provided with a heating component to heat the film being transversely stretched while the film is being transversely stretched, so that the stretching effect of the film during transverse stretching is more uniform, and the balance of the film surface after stretching is improved, thereby avoiding the bow effect of the stretched film.

[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the working state of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the utility model from the first perspective;

[0022] Figure 3 It is a structural schematic diagram of the utility model from a second viewing angle;

[0023] Figure 4 It is a cross-sectional structural schematic diagram of the stretching assembly of the utility model;

[0024] Figure 5 It is a schematic cross-sectional structural diagram of the heating component of the utility model.

[0025] In the figure: 1. frame; 2. feed roller group; 3. preheating roller group; 4. adjustment roller group; 5. stretching assembly; 501. connecting frame; 502. connecting cover; 503. power part; 504. transmission wheel; 505. transmission chain; 506. driven wheel; 507. clamp; 6. leveling roller group; 7. traction roller group; 8. heating assembly; 801. fan; 802. connecting pipe; 803. connecting shell; 804. air outlet; 805. heater; 806. heating wire. DETAILED DESCRIPTION

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] Additional aspects and advantages of the present invention will be further described below in conjunction with the accompanying drawings, and some will become apparent from the following description or be learned through practice of the present invention.

[0029] like Figure 1-3 As shown, a film transverse stretching mechanism comprises a frame 1, a feeding roller group 2 is arranged on one side of the top of the frame 1, a preheating roller group 3 is arranged on one side of the feeding roller group 2, an adjusting roller group 4 is arranged on the side of the preheating roller group 3 away from the feeding roller group 2, a stretching assembly 5 is arranged on the side of the adjusting roller group 4 away from the preheating roller group 3, there are two stretching assemblies 5, which are symmetrically distributed on the top of the frame 1, a leveling roller group 6 is arranged on the side of the stretching assembly 5 away from the adjusting roller group 4, a traction roller group 7 is arranged on the side of the leveling roller group 6 away from the stretching assembly 5, the preheating roller group 3, the adjusting roller group 4, the stretching assembly 5, the leveling roller group 6 and the traction roller group 7 are all located on the top of the frame 1, a heating assembly 8 is arranged on the frame 1, and the heating assembly 8 is located between the two stretching assemblies 5;

[0030] like Figure 2 and Figure 4 As shown, the stretching assembly 5 includes a connecting frame 501, a connecting cover 502, a power piece 503, a transmission wheel 504, a transmission chain 505, a driven wheel 506 and a clamp 507. The connecting frame 501 is fixedly connected to the top of the frame 1, and a connecting cover 502 is provided on the top of the connecting frame 501. The power piece 503 is fixedly installed on the connecting frame 501. The output end of the power piece 503 is provided with a transmission wheel 504, and a transmission chain 505 is provided on the transmission wheel 504. The transmission wheel 504 is connected to the driven wheel 506 through the transmission chain 505. The transmission wheel 504 and the driven wheel 506 are both rotatably connected to the connecting frame 501, and a clamp 507 is provided on the transmission chain 505.

[0031] like Figure 2 , Figure 3 and Figure 5 As shown, the heating component 8 includes a fan 801, a connecting pipe 802, a connecting shell 803, an air outlet 804, a heater 805 and a heating wire 806. The fan 801 is fixedly installed on the frame 1, and the output end of the fan 801 is fixedly connected to the connecting pipe 802, and the end of the connecting pipe 802 away from the fan 801 is fixedly connected to the connecting shell 803, and the connecting shell 803 is located at the top of the frame 1. The connecting shell 803 is located below between the two stretching components 5. The connecting shell 803 is provided with an air outlet 804, and a heater 805 is arranged on one side of the connecting shell 803. The heater 805 is fixedly installed on the frame 1, and the output end of the heater 805 is provided with a heating wire 806, and the heating wire 806 is located inside the connecting shell 803.

[0032] The working process of the utility model is as follows:

[0033] S1. When in use, start the feed roller group 2, which drives the film to move, and then passes the film around the preheating roller group 3, which preheats the film, and then the film passes through the adjustment roller group 4;

[0034] S2. When the film reaches the stretching assembly 5, the power member 503 is started, the power member 503 drives the transmission wheel 504 to drive the transmission chain 505 to move, the transmission chain 505 drives the clamp 507 to move, and the clamp 507 clamps the edge of the film and stretches the film transversely as the transmission chain 505 moves;

[0035] S3. At the same time, the fan 801 and the heater 805 are started. The air blown by the fan 801 enters the connection shell 803 through the connection pipe 802, and is heated by the heating wire 806 and blown out from the air outlet 804.

[0036] S4. Blowing onto the film being stretched transversely to heat the film being stretched transversely, so that the stretching effect of the film during transverse stretching is more uniform, and the balance of the film surface after stretching is improved, thereby avoiding the bow effect of the stretched film.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The film transverse stretching mechanism is provided with a heating component 8, which heats the film being transversely stretched while stretching the film transversely, so that the stretching effect of the film during transverse stretching is more uniform, and the balance of the film surface after stretching is improved, thereby avoiding the bow effect of the stretched film.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A film transverse stretching mechanism, characterized in that: The machine comprises a frame (1), a feeding roller group (2) is arranged on one side of the top of the frame (1), a preheating roller group (3) is arranged on one side of the feeding roller group (2), an adjusting roller group (4) is arranged on the side of the preheating roller group (3) away from the feeding roller group (2), a stretching assembly (5) is arranged on the side of the adjusting roller group (4) away from the preheating roller group (3), a leveling roller group (6) is arranged on the side of the stretching assembly (5) away from the adjusting roller group (4), a traction roller group (7) is arranged on the side of the leveling roller group (6) away from the stretching assembly (5), and a heating assembly (8) is arranged on the frame (1); The heating component (8) comprises a fan (801), the output end of the fan (801) is fixedly connected to a connecting pipe (802), one end of the connecting pipe (802) away from the fan (801) is fixedly connected to a connecting shell (803), an air outlet (804) is provided on the connecting shell (803), a heater (805) is provided on one side of the connecting shell (803), a heating wire (806) is provided at the output end of the heater (805), and the heating wire (806) is located inside the connecting shell (803).

2. A film transverse stretching mechanism according to claim 1, characterized in that: The stretching assembly (5) comprises a connecting frame (501), a connecting cover (502) is arranged on the top of the connecting frame (501), a power piece (503) is fixedly mounted on the connecting frame (501), a transmission wheel (504) is arranged at the output end of the power piece (503), a transmission chain (505) is arranged on the transmission wheel (504), the transmission wheel (504) is connected to a driven wheel (506) through the transmission chain (505), the transmission wheel (504) and the driven wheel (506) are both rotatably connected to the connecting frame (501), and a clamp (507) is arranged on the transmission chain (505).

3. A film transverse stretching mechanism according to claim 1, characterized in that: The number of the stretching components (5) is two, which are symmetrically distributed on the top of the frame (1), and the heating component (8) is located between the two stretching components (5).

4. A film transverse stretching mechanism according to claim 1, characterized in that: The fan (801) and the heater (805) are both fixedly mounted on the frame (1).

5. A film transverse stretching mechanism according to claim 1, characterized in that: The connecting shell (803) is located at the top of the frame (1), and the connecting shell (803) is located below between the two stretching components (5).

6. A film transverse stretching mechanism according to claim 2, characterized in that: The connecting frame (501) is fixedly connected to the top of the frame (1).

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