Plastic film blow molding traction device

Abstract

The utility model relates to the technical field of traction devices, and discloses a plastic film blow molding traction device which comprises a supporting frame, the top of the supporting frame is fixedly connected with a fixing frame, the interior of the fixing frame is rotatably connected with a plurality of traction rollers, the top of the supporting frame is fixedly connected with a connecting frame, and a traction assembly is arranged in the connecting frame. A cutting assembly is arranged at the top of the connecting frame; and the traction assembly comprises a rotating stick, the rotating stick is rotationally connected to the interior of the connecting frame, one end of the rotating stick is fixedly connected with a driven wheel, and a first motor is fixedly connected to the interior of the supporting frame. According to the utility model, the plastic film passes through the space between the rotating roller and the limiting roller, the limiting roller touches the film to be stressed, the sliding block is driven to enable the spring I to contract, the film is tightly attached by virtue of elastic force, the motor I drives the driving wheel, and the driven wheel and the rotating roller are driven by the transmission belt to realize conveying, so that the effect of self-adaptive attaching conveying of different films is realized; therefore, the flexibility of the traction device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a traction device technical field especially relates to a plastic film blow molding traction device. BACKGROUND

[0002] In the production process of plastic film, especially in the blow molding process link, the traction device plays a vital role, which is directly related to the production efficiency, quality and product diversity of plastic film. With the wide application of plastic film in packaging, agriculture, electronics and many other fields, the requirements for its production equipment are also increasing. The plastic film blow molding traction device not only needs to be able to stably and uniformly pull the film to ensure the uniform thickness and high flatness of the film, but also needs to be able to flexibly adapt to plastic films of different sizes and thicknesses to meet the market demand for various specifications of plastic film, which has far-reaching significance for improving the competitiveness of plastic film production enterprises and promoting the sustainable development of the plastic film industry.

[0003] The traditional plastic film traction device is relatively fixed in mechanical structure and technical principle. The common traction device is mainly composed of a group of traction rollers with fixed spacing. These traction rollers are driven by motor to rotate synchronously at the same speed. In work, the plastic film comes out of the blow molding machine and directly enters between the traction rollers, relying on the friction between the traction rollers and the film to realize traction.

[0004] However, the traditional plastic film traction device is difficult to adapt to plastic films of different sizes and thicknesses. In actual production, due to different application scenarios requiring different thickness and size of plastic film, such as thinner film for packaging food and thicker film for agricultural covering. When producing various specifications of film, the traditional traction device cannot well fit the film, resulting in wrinkles and uneven stretching of the film during traction, affecting the quality of the film. Moreover, frequent replacement of the device or complex adjustment will reduce the production efficiency. Therefore, a plastic film blow molding traction device is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In order to make up for the above shortcomings, the utility model provides a plastic film blow molding traction device, which aims to improve the problem that the traditional traction device in the prior art cannot well fit the film, resulting in wrinkles and uneven stretching of the film during traction.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A plastic film blowing traction device, comprising a support frame, a fixed frame is fixedly connected to the top of the support frame, a plurality of traction poles are rotatably connected in the fixed frame, a connecting frame is fixedly connected to the top of the support frame, a traction assembly is arranged in the connecting frame, and a cutting assembly is arranged on the top of the connecting frame;

[0008] The traction assembly comprises a rotating pole, the rotating pole is rotatably connected in the connecting frame, one end of the rotating pole is fixedly connected with a driven wheel, a motor one is fixedly connected in the support frame, a driving wheel is fixedly connected to the output end of the motor one, a transmission belt is arranged between the driving wheel and the driven wheel, a sliding block is slidably connected in the connecting frame, a limiting pole is rotatably connected in the sliding block, a supporting column is fixedly connected to the top of the sliding block, the supporting column is slidably connected in the connecting frame, a spring one is sleeved on the outer wall of the supporting column, and the two ends of the spring one are fixedly connected in the connecting frame and the sliding block, respectively.

[0009] As a further description of the above technical scheme:

[0010] The cutting assembly comprises a cylinder and a sliding table, the cylinder is fixedly connected to the top of the connecting frame, and the sliding table is fixedly connected to the output end of the cylinder;

[0011] As a further description of the above technical scheme:

[0012] The sliding table is fixedly connected with a connecting column, and the connecting column is slidably connected with a cutter;

[0013] As a further description of the above technical scheme:

[0014] The connecting column is sleeved with a spring two, and the two ends of the spring two are fixedly connected in the sliding table and the cutter, respectively.

[0015] As a further description of the above technical scheme:

[0016] The connecting frame is fixedly connected with a cutting table in the connecting frame, and the connecting frame is fixedly connected with a hopper on one side;

[0017] As a further description of the above technical scheme:

[0018] The support frame is fixedly connected with a fixed frame on one side, and a winding drum is rotatably connected in the fixed frame;

[0019] As a further description of the above technical scheme:

[0020] The fixed frame is fixedly connected with a motor two on one side, and the output end of the motor two is fixedly connected with a gear one;

[0021] As a further description of the above technical solutions:

[0022] The outer wall of the winding drum is fixedly connected with a gear two, and the gear two is engaged with the gear one.

[0023] The utility model has the advantages of the following:

[0024] 1. In the utility model, the plastic film is passed between the rotating rod and the limiting rod, the limiting rod is stressed, the spring one is contracted by the sliding block, the film is tightly attached by the elastic force, the driving wheel is driven by the motor one, the driven wheel and the rotating rod are driven by the transmission belt to realize conveying, the effect of self-adaptive attachment and conveying of different films is realized, the traditional traction device cannot well attach the film, the film is prone to wrinkles and uneven stretching in the traction process, and the flexibility of the traction device is improved.

[0025] 2. In the utility model, the connecting column and the limiting rod are cut by the cylinder push sliding table, the spring two is buffered, the motor two drives the gear one to rotate, the engaged gear two and the winding drum are wound, the effect of precise cutting and winding on demand is realized, the traditional device has single function, cannot quickly switch the cutting and winding process on the production line, and the production is delayed, and the flexibility of the traction device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of a plastic film blow molding traction device is provided for the utility model;

[0027] Figure 2 A rotating rod structure schematic view of a plastic film blow molding traction device is provided for the utility model;

[0028] Figure 3 A cutter structure schematic view of a plastic film blow molding traction device is provided for the utility model;

[0029] Figure 4 A winding drum structure schematic view of a plastic film blow molding traction device is provided for the utility model.

[0030] LEGEND:

[0031] 1, support frame;2, fixed frame;3, traction rod;4, connecting frame;5, rotating rod;6, motor one;7, driving wheel;8, driven wheel;9, transmission belt;10, sliding block;11, limiting rod;12, support column;13, spring one;14, fixed frame;15, cylinder;16, sliding table;17, connecting column;18, spring two;19, cutter;20, cutting table;21, hopper;22, motor two;23, gear one;24, winding drum;25, gear two. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] With reference to Figure 1 and Figure 2 An embodiment provided by the utility model: a plastic film blow molding traction device, including support frame 1, support frame 1 is the basic support structure of the whole device, adopts high-strength steel material to manufacture, ensures that there is enough stability when the equipment is running, and the top of support frame 1 is fixedly connected with fixed frame 2, a plurality of traction poles 3 are rotatably connected in fixed frame 2, the traction poles 3 are evenly distributed through the support frame, so that the plastic film is evenly stressed in the traction process, the top of support frame 1 is fixedly connected with connecting frame 4, and the connecting frame 4 is provided with a traction assembly inside, and the top of connecting frame 4 is provided with a cutting assembly;

[0034] The traction assembly includes rotating pole 5, rotating pole 5 is rotatably connected in connecting frame 4, one end of rotating pole 5 is fixedly connected with driven wheel 8, motor one 6 is fixedly connected in support frame 1, motor one 6 is the power source of the traction assembly, the output end of motor one 6 is fixedly connected with driving wheel 7, transmission belt 9 is arranged between driving wheel 7 and driven wheel 8, sliding block 10 is slidably connected in connecting frame 4, limiting pole 11 is rotatably connected in sliding block 10, support column 12 is fixedly connected on the top of sliding block 10, support column 12 is slidably connected in connecting frame 4, spring one 13 is sleeved on the outer wall of support column 12, and the two ends of spring one 13 are fixedly connected in connecting frame 4 and sliding block 10 respectively, the spring one 13 can provide appropriate reaction force through the adjustment of the film tension, so that the film can always keep flat.

[0035] Specifically, in use, the plastic film is first threaded between the rotating rod 5 and the limiting rod 11, at which time the upper end of the plastic film is in contact with the limiting rod 11. With the operation of the traction device, the limiting rod 11 is subjected to external tension and begins to move along its own axial direction. This movement drives the sliding block 10 connected to the outer wall of the limiting rod 11 to slide within the connecting frame 4. During the sliding process, the sliding block 10 exerts a certain compression force on the top spring 13, causing the spring 13 to contract and providing a certain counterforce to the limiting rod 11, so that the limiting rod 11 can closely fit the surface of the plastic film. The spring force of the spring 13 is adjustable according to the thickness and tension of the film, so that the device can adapt to plastic films of different sizes and thicknesses, ensuring that the film remains flat and stable during the traction process. Next, the plastic film is threaded through the outer walls of the plurality of traction rods 3 in turn. The design of the traction rod 3 ensures that the film can be uniformly transmitted between multiple support points without wrinkles or deformation due to local tightness or looseness. Then, the output end of the motor 6 drives the driving wheel 7 to rotate, and the driving wheel 7 is connected to the driven wheel 8 through the transmission belt 9 on the outer wall. The rotation of the driven wheel 8 further drives the rotating rod 5 to rotate and traction the plastic film. The rotation speed and traction force of the rotating rod 5 are adjusted by controlling the running speed of the motor 6 to adapt to the processing needs of different plastic films.

[0036] Referring to Figures 1-4 The cutting assembly includes a cylinder 15 and a sliding table 16. The cylinder 15 is fixedly connected to the top of the connecting frame 4, and the sliding table 16 is fixedly connected to the output end of the cylinder 15. The sliding table 16 is slidingly connected within the connecting frame 4, and the bottom of the sliding table 16 is fixedly connected with a connecting column 17. A cutter 19 is slidingly connected to the outer wall of the connecting column 17. The movement of the sliding table 16 is controlled by the cylinder 15, which can achieve precise cutting positioning. A spring 18 is sleeved on the outer wall of the connecting column 17, and the two ends of the spring 18 are fixedly connected to the inside of the sliding table 16 and the cutter 19, respectively. The spring 18 plays a buffering role during cutting, avoiding the problem of film damage caused by cutting too fast or too heavy. A cutting table 20 is fixedly connected inside the connecting frame 4. A hopper 21 is fixedly connected to one side of the connecting frame 4. A fixed frame 14 is fixedly connected to one side of the support frame 1. A winding drum 24 is rotatably connected inside the fixed frame 14. A motor 22 is fixedly connected to one side of the fixed frame 14. The output end of the motor 22 is fixedly connected with a gear 23. A gear 25 is fixedly connected to the outer wall of the winding drum 24. The gear 25 and the gear 23 are engaged.

[0037] Specifically, when the plastic film needs to be cut, the output end of the air cylinder 15 drives the sliding table 16 to move horizontally. The movement of the sliding table 16 causes the connecting column 17 connected to the bottom of the sliding table 16 to move longitudinally, thereby driving the limiting rod 11 of the outer wall to move transversely. After the limiting rod 11 moves to the appropriate position, it precisely cuts the plastic film through the sharp cutting surface on the outer edge of the limiting rod 11. At this time, the limiting rod 11 will compress the second spring 18 on the top, and the elastic force of the second spring 18 will also help to reduce the tension on the film during cutting. When the plastic film is being wound, the film is first threaded between the plurality of traction rods 3. Then, the free end of the film is guided to the outer wall of the winding drum 24 for winding. The output end of the second motor 22 drives the gear 1 23 to rotate, and the rotation of the gear 1 23 drives the gear 2 25 to rotate. The gear 2 25 is engaged with the internal gear of the winding drum 24, and the rotation of the gear 2 25 drives the winding drum 24 to rotate, generating a winding force to tightly wind the plastic film on the outer wall of the winding drum 24, ensuring the flatness of the film winding.

[0038] Working principle: when using the traction device, first thread the plastic film between the rotating rod 5 and the limiting rod 11. During this process, when the limiting rod 11 contacts the plastic film, it will be forced to drive the sliding block 10 in the connecting frame 4 to slide, and the sliding block 10 will be forced to compress the first spring 13 on the top, causing it to shrink. With the help of the elastic force of the first spring 13, the limiting rod 11 can tightly fit on the plastic film, thereby adapting to plastic films of different sizes and thicknesses. Then, thread the plastic film through the outer walls of the plurality of traction rods 3, and drive the driving wheel 7 to rotate through the output end of the first motor 6. The driving wheel 7 drives the driven wheel 8 to rotate through the outer wall of the transmission belt 9, causing the driven wheel 8 to drive the rotating rod 5 to rotate and transport the plastic film. When the plastic film needs to be cut, the output end of the air cylinder 15 drives the sliding table 16 to move, and the sliding table 16 drives the connecting column 17 connected to the bottom to move, and the connecting column 17 drives the limiting rod 11 of the outer wall to move, causing the limiting rod 11 to cut the plastic film. At the same time, the limiting rod 11 will compress the second spring 18 connected to the top. When the plastic film needs to be wound, first thread the plastic film between the plurality of traction rods 3, and then wind it on the outer wall of the winding drum 24. Then, drive the gear 1 23 to rotate through the output end of the second motor 22, and the gear 1 23 drives the gear 2 25 engaged therewith to rotate. The gear 2 25 drives the winding drum 24 inside to rotate, thereby winding the winding drum 24, thereby achieving the effect of cutting and winding the plastic film according to the needs.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A plastic film blowing and drawing device comprising a support frame (1), characterized in that: The support frame (1) top fixedly connected with fixed frame (2), the fixed frame (2) inside rotatably connected with a plurality of traction stick (3), the support frame (1) top fixedly connected with connecting frame (4), the connecting frame (4) inside is provided with traction assembly, the connecting frame (4) top is provided with cutting assembly; The traction assembly includes rotating stick (5), the rotating stick (5) rotatably connected in the connecting frame (4), one end of the rotating stick (5) is fixedly connected with driven wheel (8), the support frame (1) inside fixedly connected with motor one (6), the motor one (6) output end is fixedly connected with driving wheel (7), the driving wheel (7) and the driven wheel (8) between being provided with transmission belt (9), the connecting frame (4) inside is slidably connected with sliding block (10), the sliding block (10) inside rotatably connected with limiting stick (11), the sliding block (10) top is fixedly connected with support column (12), the support column (12) is slidably connected in the connecting frame (4), the support column (12) outer wall is sleeved with spring one (13), the spring one (13) both ends are fixedly connected in the connecting frame (4) and the sliding block (10) inside.

2. A plastic film blowing and drawing apparatus according to claim 1, wherein: The cutting assembly includes cylinder (15) and sliding table (16), the cylinder (15) bottom is fixedly connected in the connecting frame (4) top, the sliding table (16) top is fixedly connected in the cylinder (15) output end, the sliding table (16) is slidably connected in the connecting frame (4) inside.

3. A plastic film blowing and drawing apparatus according to claim 2, wherein: The sliding table (16) bottom is fixedly connected with connecting column (17), the connecting column (17) outer wall is slidably connected with cutter (19).

4. A plastic film blowing and drawing apparatus according to claim 3, wherein: The connecting column (17) outer wall is sleeved with spring two (18), and the spring two (18) both ends are fixedly connected in the sliding table (16) and the cutter (19) inside.

5. A plastic film blowing and drawing apparatus according to claim 4, wherein: The connecting frame (4) inside is fixedly connected with cutting table (20), and the connecting frame (4) one side is fixedly connected with hopper (21).

6. A plastic film blowing and drawing apparatus according to claim 1, wherein: The support frame (1) one side is fixedly connected with fixed frame (14), and the fixed frame (14) inside rotatably connected with winding drum (24).

7. A plastic film blowing and drawing apparatus according to claim 6, wherein: The fixed frame (14) one side is fixedly connected with motor two (22), and the motor two (22) output end is fixedly connected with gear one (23).

8. A plastic film blowing and drawing apparatus according to claim 7, wherein: The winding drum (24) outer wall is fixedly connected with gear two (25), and the gear two (25) and the gear one (23) are engaged.

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