A plastic film breaking pre-inclined feeding device

Abstract

The present application relates to the technical field of film conveying, in particular to a plastic film pre-breaking oblique feeding device. It comprises a conveying belt in an oblique state, mounting frames arranged on both sides of the conveying belt, and a driving device for driving the conveying belt to rotate. One end of the top of the mounting frame is provided with a compression roller for extruding the plastic film on the surface of the conveying belt, and the other end is provided with a stop component for blocking the advance of the plastic film. In the plastic film pre-breaking oblique feeding device, the stop component is arranged on the advance route of the plastic film to block the plastic film, so that the rear part of the plastic film is close to the front part. The force after the close is used to overcome the blocking force of the stop component, and the forced movement of the stop component provides a basis for the movement of the driving compression roller, thereby avoiding the problem of damaging the conveying belt when the plastic film is instantly pulled into the crushing equipment.

Description

Technical Field

[0001] This invention relates to the field of film conveying technology, and more specifically, to a tilting feeding device for plastic film before it is crushed. Background Technology

[0002] Currently, plastic film products are used in huge quantities in actual production and daily life. However, if plastic film is not properly disposed of after use, it will cause extremely serious environmental pollution and serious waste of resources. Therefore, in response to this problem, various plastic film resource recycling devices have emerged.

[0003] The recycling and reuse of waste plastic film typically involves a series of steps, including collection, washing, conveying, crushing, and granulation. However, in current waste plastic recycling processes, because the feed inlet of the crusher is usually located at a high position, a ramp conveyor belt is required for transport.

[0004] In the recycling of waste plastic film, due to its lightweight, tangling, and slippery nature, continuous, uniform, and stable feeding before entering the crusher is difficult. Furthermore, because some films are quite long, initially most of the film lies on the ground, with only a small portion at the feed end of the conveyor belt. This results in greater friction between the film and the ground than with the conveyor belt, making it difficult for the film to move along the conveyor belt. To address this issue, a squeezing roller is currently installed at the top of the feed end of the conveyor belt. The film is clamped and conveyed through contact between the squeezing roller and the conveyor belt. However, this method also presents the following problems during use:

[0005] Since the end of the conveyor belt is the crushing equipment, when the film is conveyed into the crushing equipment, the high-speed rotating crushing mechanism will instantly pull the film into the crushing equipment. If the extrusion roller is still extruding the film at this time, it will cause excessive friction between the film and the conveyor belt during the pulling process (because the speed at which the film is pulled is greater than the rotation speed of the conveyor belt). Unstable feeding will cause large fluctuations in the load of the crusher, which will easily lead to material blockage and roller entanglement, reduce recycling efficiency, and even damage the crushing blades. At the same time, it is easy to damage the conveyor belt. Summary of the Invention

[0006] The purpose of this invention is to provide a tilting feeding device for plastic film before crushing. This device uses a stop component to block the plastic film, causing it to come close to the surface of the conveyor belt. The close-coming plastic film drives the stop component, which in turn drives the pressure roller to detach from the conveyor belt surface when the plastic film is pulled instantaneously. This solves the problem mentioned in the background art: when the film is conveyed into the crushing equipment, if the pressure roller is still squeezing the film, unstable feeding will cause large fluctuations in the crusher load, reducing production efficiency and easily damaging the conveyor belt.

[0007] To achieve the above objectives, the inclined feeding device for plastic film before crushing includes an inclined conveyor belt, mounting frames on both sides of the conveyor belt, and a drive device for driving the conveyor belt to rotate; one end of the top of the mounting frame is provided with a pressure roller for pressing the plastic film onto the surface of the conveyor belt, and the other end is provided with a stop component for blocking the advance of the plastic film, wherein:

[0008] The pressure roller is located at the lower end of the conveyor belt, and the pressure roller is connected to a drive mechanism for driving the pressure roller away from or closer to the conveyor belt.

[0009] The stop component is located at the high end of the conveyor belt, and the stop component includes a stop plate rotatably disposed above the conveyor belt and a control sensor;

[0010] The stop plate is used to block the advance of the plastic film, causing the rear part of the plastic film to move closer to the front part. When the plastic film after moving closer can overcome the resistance of the stop plate, the stop plate is forced to rotate to allow the plastic film to pass.

[0011] When the control sensor detects the rotation of the stop plate, it sends a signal to the drive mechanism to control the pressure roller to move away from the conveyor belt.

[0012] In the above technical solution, the stop plate blocks the plastic film, allowing the plastic film to make large-area contact with the conveyor belt. On the other hand, the plastic film, after being brought together, can drive the stop plate to rotate. The rotation of the stop plate triggers the control sensor to work, thereby driving the pressure roller away from the surface of the conveyor belt in a timely manner.

[0013] Based on this, the drive mechanism includes a slide rail set on the top of the mounting frame, an electric push rod mounted on the top of the slide rail, and a bearing seat slidably arranged on the side wall; the bearing seat is rotatably connected to the end of the pressure roller, and the movable end of the electric push rod is fixedly connected to the bearing seat.

[0014] Based on this, the stop component also includes a rotating rod located above the conveyor belt, and the two ends of the rotating rod are rotatably connected to side plates that are fixedly connected to the mounting frame;

[0015] The top end of the stop plate is fixedly connected to the rotating rod, and the bottom end extends to the surface of the conveyor belt to block the advance of the plastic film. The stop plate is made of a rigid material to drive the rotating rod to rotate.

[0016] In this structural design, the stop plate rotates to a vertical position under its own weight, thereby blocking the plastic film. Furthermore, after blocking, as the friction between the plastic film and the conveyor belt increases, the stop plate can be forced to rotate again, thus allowing the plastic film to move.

[0017] In another technical solution, a pull rod is fixedly connected to the bottom of the rotating rod, a pull rope is fixedly connected to the bottom end of the pull rod, and one end of the pull rope is fixedly connected to the slide rail;

[0018] The bottom end of the slide rail is slidably provided with a base fixed to the top of the mounting bracket, and the part of the base that connects to the slide rail is an inclined structure.

[0019] A top roller is installed between the upper end of the conveyor belt and the stop plate. The top roller is located inside the conveyor belt and protrudes from the surface of the conveyor belt. It is used to lift the top of the conveyor belt upward, so that the part of the conveyor belt corresponding to the top roller forms a protrusion, thereby increasing the friction between the plastic film and the bottom of the stop plate.

[0020] In this technical solution, when the plastic film is pulled instantly, the friction force drives the stop plate to rotate significantly, thereby pulling the pressure roller upward through the pull rope. This operation can reduce the number of times the electric push rod needs to be manually controlled.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. In this inclined feeding device before crushing plastic film, a stop component is set on the forward path of the plastic film to block the plastic film, causing the rear part of the plastic film to move closer to the front part. The force after the movement is close together overcomes the blocking force of the stop component, and the forced movement of the stop component provides a basis for driving the movement of the pressure roller. This avoids the problem of damage to the conveyor belt when the plastic film is pulled into the crushing equipment instantly, so as to achieve continuous, uniform and stable feeding.

[0023] 2. In this inclined feeding device before crushing plastic film, when the plastic film is instantly pulled into the crushing equipment, the friction force will drive the stop plate to rotate significantly, thereby driving the pressure roller to move upward. The pressure roller can be moved upward without manual control, realizing continuous, stable and dense feeding to the crusher, improving the quality of plastic film recycling and the efficiency of pre-processing production. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the pressure roller of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the stop component of the present invention;

[0027] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A;

[0028] Figure 5 This is a schematic diagram of the sensor structure of the present invention;

[0029] Figure 6 This is a schematic diagram showing the conveying state of the plastic film of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the pull rope of the present invention;

[0031] Figure 8 This is a schematic diagram of the piston cylinder of the present invention;

[0032] Figure 9 This is a schematic diagram of the spoiler structure of the present invention;

[0033] Figure 10 This is a schematic diagram showing the state of the plastic film of the present invention when it is being pulled.

[0034] Figure 11 This is a schematic diagram of the force state of the baffle of the present invention.

[0035] The meanings of the labels in the diagram are as follows:

[0036] 100. Conveyor belt; 101. Mounting frame; 102. Baffle; 110. Pressure roller; 120. Stop component; 121. Side plate; 122. Rotating rod; 123. Stop plate; 124. Limiting component; 130. Slide rail; 131. Electric push rod; 132. Bearing housing; 133. Sensor; 140. Pull rod; 141. Pull rope; 142. Slack part; 143. Base; 144. Piston cylinder; 145. Piston rod; 146. Vent; 147. Baffle; 150. Protrusion; 200. Plastic film. Detailed Implementation

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] To address the problem that the crushing mechanism's instantaneous pulling of the plastic film 200 into the crushing equipment can easily damage the conveyor belt 100, this invention provides a tilting feeding device for the plastic film before crushing. For example... Figure 1 As shown, the feeding device includes a conveyor belt 100 and mounting frames 101 disposed on both sides of the conveyor belt 100. Supports are provided at both ends of the bottom of the mounting frames 101, with different heights between the supports at both ends, thereby supporting the conveyor belt 100 in an inclined state. The upper end of the conveyor belt 100 (i.e.,...) Figure 1 The right end of the feeding device corresponds to the feed inlet of the crushing equipment. Furthermore, the feeding device also includes a drive unit for driving the conveyor belt 100 to rotate, preferably a motor. A baffle 102 is provided on the top of the mounting frame 101, which guides the plastic film 200 on the surface of the conveyor belt 100, preventing the plastic film 200 from detaching from both sides of the conveyor belt 100.

[0039] When the plastic film 200 is at the lower end of the conveyor belt 100, the conveyor belt 100 rotates to transport the plastic film 200 to the upper end, and the plastic film 200 falls into the feed inlet of the crushing equipment.

[0040] Furthermore, one end of the top of the mounting bracket 101 is provided with a pressure roller 110 for pressing the plastic film 200 onto the surface of the conveyor belt 100, and the other end is provided with a stop member 120 for blocking the advance of the plastic film 200. The pressure roller 110 is located at the lower end of the conveyor belt 100, and the stop member 120 is located at the upper end of the conveyor belt 100. The pressure roller 110 is connected to a drive mechanism, which drives the pressure roller 110 away from or towards the conveyor belt 100. Next, combined with... Figure 3 and Figure 4 As shown, the stop component 120 includes a stop plate 123 rotatably disposed above the conveyor belt 100 and a control sensor 133. The stop plate 123 is used to block the forward movement of the plastic film 200, causing the rear part of the plastic film 200 to move closer to the front part. When the plastic film 200 moves closer and can overcome the resistance of the stop plate 123, the stop plate 123 is forced to rotate to allow the plastic film 200 to pass through. When the control sensor 133 senses the rotation of the stop plate 123, it sends a signal to the drive mechanism to control the pressure roller 110 to move away from the conveyor belt 100.

[0041] Specifically, such as Figure 2As shown, the drive mechanism includes a slide rail 130 mounted on the top of the mounting frame 101, with the slide rail 130 perpendicular to the top of the mounting frame 101. An electric push rod 131 is mounted on the top of the slide rail 130, and a bearing seat 132 is slidably mounted on its side wall. The bearing seat 132 is rotatably connected to the end of the pressure roller 110, and the movable end of the electric push rod 131 is fixedly connected to the bearing seat 132. Thus, when the movable end of the electric push rod 131 extends or retracts, the electric push rod 131 drives the pressure roller 110 to perform a corresponding displacement movement through the bearing seat 132, causing the pressure roller 110 to move closer to or further away from the surface of the conveyor belt 100.

[0042] like Figure 3 As shown, the stop component 120 also includes a rotating rod 122 located above the conveyor belt 100. Both ends of the rotating rod 122 are rotatably connected to side plates 121 fixedly connected to the mounting bracket 101. Next, the top end of the aforementioned stop plate 123 is fixedly connected to the rotating rod 122, and its bottom end extends to the surface of the conveyor belt 100 to block the forward movement of the plastic film 200. The stop plate 123 is made of a rigid material, such as plastic or metal. Simultaneously, the stop plate 123 can be... Figure 3 It can be composed of multiple rectangular plates as shown, or it can be a single piece of plate.

[0043] The stop plate 123 can be perpendicular to or not perpendicular to the surface of the conveyor belt 100; this invention does not limit this. Here, when the stop plate 123 needs to be perpendicular to the surface of the conveyor belt 100, since the conveyor belt 100 is inclined, this invention provides a limiting member 124 on the side wall of the side plate 121. The limiting member 124 is located on the side of the stop plate 123 facing the bottom end of the conveyor belt 100. Through this design, the limiting member 124 can restrict the stop plate 123, thereby achieving the goal of perpendicularity between the stop plate 123 and the surface of the conveyor belt 100.

[0044] The control sensor 133 needs to sense whether the stop plate 123 is rotating. Therefore, the position of the control sensor 133 should be in the direction of rotation of the stop plate 123. Figure 4 The specific location of the control sensor 133 is shown. As shown, the control sensor 133 is located on the side of the stop plate 123 facing the upper end of the conveyor belt 100, and the control sensor 133 is fixedly mounted on the side wall of the side plate 121. Thus, as... Figure 5 As shown, when the stop plate 123 is forced to rotate, the stop plate 123 will be within the sensing range of the control sensor 133, so that the control sensor 133 senses that the stop plate 123 is in a rotating state.

[0045] It should be understood that the control sensor 133 is mainly used to sense whether the stop plate 123 is rotating. Therefore, any sensor that can perform this function can be used in this invention, such as photoelectric sensors, infrared sensors, laser sensors, etc.

[0046] The working principle of this invention will be described in detail below:

[0047] like Figure 6 As shown in the upper half of the diagram, firstly, the plastic film 200 is placed on the left side of the conveyor belt 100 (i.e., the lower end of the conveyor belt 100). Then, the electric push rod 131 is controlled to extend downwards. At this time, the electric push rod 131 drives the pressure roller 110 to move downwards through the bearing seat 132. The downward movement of the pressure roller 110 compresses the plastic film 200. Next, the conveyor belt 100 is driven to rotate. The conveyor belt 100 drives the pressure roller 110 to rotate through friction. The relative rotation of the conveyor belt 100 and the pressure roller 110 causes the plastic film 200 to move to the right.

[0048] Then, when the front part of the plastic film 200 moves to the stop plate 123, the stop plate 123 blocks the front part of the plastic film 200 by its own gravity. At this time, the front part of the plastic film 200 stops moving forward, while the rear part continues to move between the pressure roller 110 and the stop plate 123 by the squeezing and conveying of the pressure roller 110 and the conveyor belt 100.

[0049] Then, as the rear portion of the plastic film 200 moves continuously between the pressure roller 110 and the stop plate 123, the state of the plastic film 200 will be as follows: Figure 6 As shown in the lower half of the diagram, most of the plastic film 200 is positioned between the pressure roller 110 and the stop plate 123, with only a small portion on the left side of the conveyor belt 100 (i.e., on the ground). It can be observed that the friction between the plastic film 200 and the conveyor belt 100 is significantly greater than the friction between the plastic film 200 and the ground. Simultaneously, since most of the plastic film 200 is between the pressure roller 110 and the stop plate 123, when the friction between the plastic film 200 and the conveyor belt 100 exceeds the weight of the stop plate 123, the conveyor belt 100 will propel the plastic film 200 forward. This causes the front portion of the plastic film 200 to push the stop plate 123 to rotate, at which point the plastic film 200 begins to move forward past the stop plate 123. Furthermore, as the stop plate 123 rotates, the control sensor 133 sends a signal, at which point the electric push rod 131 drives the pressure roller 110 upwards via the bearing seat 132. At this time, although the pressure roller 110 no longer squeezes the plastic film 200, the plastic film 200 can continue to move forward because most of the plastic film 200 is on top of the conveyor belt 100.

[0050] Finally, when the front section of the conveyor belt 100 enters the crushing equipment, the crushing equipment pulls the plastic film 200 into the crushing equipment through two relatively rotating crushing rollers.

[0051] In other words, by setting a stop component 120 on the forward path of the plastic film 200 to block the plastic film 200, the rear part of the plastic film 200 is brought closer to the front part. The force of the brought-close force is used to overcome the blocking force of the stop component 120, and the forced movement of the stop component 120 provides a basis for the movement of the drive roller 110, thereby avoiding the problem of damage to the conveyor belt 100 when the plastic film 200 is instantly pulled into the crushing equipment.

[0052] Furthermore, considering that when initially conveying the plastic film 200, the electric push rod 131 needs to be moved upwards to increase the distance between the pressure roller 110 and the conveyor belt 100, this facilitates the placement of the plastic film 200 between the pressure roller 110 and the conveyor belt 100. To improve the efficiency of the above steps, such as... Figure 7 and Figure 8 As shown:

[0053] A pull rod 140 is fixedly connected to the bottom of the rotating rod 122, and a pull rope 141 is fixedly connected to the bottom end of the pull rod 140. One end of the pull rope 141 is fixedly connected to the slide rail 130. Here, the pull rod 140 can increase the rotation distance by its own length, which can realize the pulling of the pull rope 141 over a long distance. A base 143 is slidably mounted on the bottom end of the slide rail 130 and fixed to the top of the mounting bracket 101. The top of the base 143 has an inclined structure with the left side lower than the right side, and the bottom end of the slide rail 130 is slidably mounted on the inclined surface of the top of the base 143.

[0054] like Figure 10 As shown, a top roller is provided between the upper end of the conveyor belt 100 and the stop plate 123. The top roller is located inside the conveyor belt 100 and protrudes from the surface of the conveyor belt 100. It is used to lift the top of the conveyor belt 100 upward, so that the part of the conveyor belt 100 corresponding to the top roller forms a protrusion 150.

[0055] Working principle:

[0056] Firstly, as Figure 10 As shown in the upper part, when the protrusion 150 is provided, the plastic film 200 will tilt upwards when passing over the protrusion 150. Therefore, the portion of the plastic film 200 located between the protrusion 150 and the stop plate 123 will have an upward component force during movement, thereby increasing the friction between the plastic film 200 and the bottom end of the stop plate 123. This friction increases with the moving speed of the plastic film 200, specifically as follows: Figure 10As shown in the lower half of the diagram, when the plastic film 200 is pulled instantaneously, the portion of the plastic film 200 located between the stop plate 123 and the protrusion 150 will move upward to a further height (see reference). Figure 10 (Changes between the two parts), at this time, the friction between the stop plate 123 and the plastic film 200 will also increase further.

[0057] Based on this, combined Figure 11 As shown. Figure 11 The upper part represents the state when the plastic film 200 is not stretched. In this state, the stop plate 123 is only pushed by the plastic film 200 and does not rotate significantly. Next... Figure 11 As shown in the lower half of the diagram, when the stop plate 123 is pulled instantaneously, the rapidly moving plastic film 200 applies a large kinetic energy to the stop plate 123 through friction, causing the stop plate 123 to rotate significantly due to inertia. At this time, the stop plate 123 drives the rotating rod 122 to rotate, the rotating rod 122 drives the pull rod 140 to rotate, the pull rod 140 pulls the pull rope 141 to move, and the pull rope 141 pulls the slide rail 130 upward, causing the slide rail 130 to drive the pressure roller 110 upward through the bearing seat 132. In this way, there is no need to manually control the electric push rod 131 to drive the pressure roller 110 upward. After the pressure roller 110 moves upward, a new plastic film 200 is placed between the pressure roller 110 and the conveyor belt 100, and then the pressure roller 110 is allowed to move downward and reset.

[0058] In addition, such as Figure 7 As shown, when the stop plate 123 is in a free state (not pushed by the plastic film 200), the pull rope 141 also has a slack portion 142. The slack portion 142 can prevent the stop plate 123 from driving the slide rail 130 to move during small-amplitude rotation. Only when the pull rod 140 rotates significantly, and the distance generated by the rotation of the pull rod 140 is greater than the length of the slack portion 142, will the pull rope 141 begin to tighten and pull the slide rail 130 to move.

[0059] To prevent the pressure roller 110 from resetting too quickly, the present invention also includes a slow-descent device. For example... Figure 8 and Figure 9 As shown, the slow-descent device includes a piston cylinder 144 disposed at the top high end of the base 143. A piston rod 145 is slidably disposed inside the piston cylinder 144. One end of the piston rod 145 is fixedly connected to the slide rail 130. One end of the piston cylinder 144 is provided with a vent 146 and a baffle 147. The baffle 147 is rotatably disposed at the end of the piston cylinder 144, and the volume of the baffle 147 is smaller than the volume of the vent 146.

[0060] In this way, when the pull rope 141 pulls the slide rail 130 upward, the slide rail 130 drives the piston rod 145 to extend into the piston cylinder 144. At this time, the gas in the piston cylinder 144 pushes the baffle 147 to rotate, opening the vent 146, and the gas in the piston cylinder 144 is quickly discharged, realizing the movement of the slide rail 130. When the slide rail 130 begins to reset after passing the inclined plane, the slide rail 130 drives the piston rod 145 to move. At this time, because the baffle 147 covers the end of the piston cylinder 144, it partially blocks the vent 146, thereby slowing down the speed at which external gas enters the piston cylinder 144. At this time, the piston rod 145 limits the reset speed of the slide rail 130, giving the workers sufficient time to put the new plastic film 200 between the pressure roller 110 and the conveyor belt 100.

[0061] In summary, when the plastic film 200 is instantly pulled into the crushing equipment, the friction force will cause the stop plate 123 to rotate significantly, thereby driving the pressure roller 110 to move upward, which can be done without manual control of the pressure roller 110.

[0062] It should be noted that the bottom end of the stop plate 123 can be serrated, and the material of the bottom end is preferably rubber. Rubber has strong friction, which helps to improve the stability of the stop plate 123 during large-scale rotation. Simultaneously, the surface of the conveyor belt 100 is also provided with raised strips. These strips increase the friction between the plastic film 200 and the surface of the conveyor belt 100, making it easier for the plastic film 200 to overcome the weight of the stop plate 123. Furthermore, the plastic film 200 is in a fluffy state with irregularly wrinkled surfaces.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tilting feeding device for crushing plastic film, comprising a tilted conveyor belt (100), mounting frames (101) disposed on both sides of the conveyor belt (100), and a driving device for driving the conveyor belt (100) to rotate; characterized in that: One end of the top of the mounting frame (101) is provided with a pressure roller (110) for pressing the plastic film (200) onto the surface of the conveyor belt (100), and the other end is provided with a stop member (120) for blocking the advance of the plastic film (200), wherein: The pressure roller (110) is located at the lower end of the conveyor belt (100), and the pressure roller (110) is connected to a drive mechanism for driving the pressure roller (110) away from or close to the conveyor belt (100); The stop component (120) is located at the high end of the conveyor belt (100). The stop component (120) includes a stop plate (123) rotatably disposed above the conveyor belt (100) and a control sensor (133). The stop plate (123) is used to block the advance of the plastic film (200), so that the rear part of the plastic film (200) moves closer to the front part. When the plastic film (200) moves closer and can overcome the resistance of the stop plate (123), the stop plate (123) is forced to rotate to allow the plastic film (200) to pass. When the control sensor (133) senses the rotation of the stop plate (123), it sends a signal to the drive mechanism to control the pressure roller (110) to move away from the conveyor belt (100).

2. The inclined feeding device for crushing plastic film according to claim 1, characterized in that: The drive mechanism includes a slide rail (130) disposed on the top of the mounting bracket (101), an electric push rod (131) is mounted on the top of the slide rail (130), and a bearing seat (132) is slidably disposed on the side wall. The bearing seat (132) is rotatably connected to the end of the pressure roller (110), and the movable end of the electric push rod (131) is fixedly connected to the bearing seat (132).

3. The inclined feeding device for crushing plastic film according to claim 1, characterized in that: The stop component (120) also includes a rotating rod (122) located above the conveyor belt (100), and the two ends of the rotating rod (122) are rotatably connected to side plates (121) that are fixedly connected to the mounting frame (101). The top end of the stop plate (123) is fixedly connected to the rotating rod (122), and the bottom end extends to the surface of the conveyor belt (100) to block the advance of the plastic film (200).

4. The inclined feeding device for crushing plastic film according to claim 3, characterized in that: The stop plate (123) is made of a hard material to drive the rotating rod (122) to rotate.

5. The inclined feeding device for crushing plastic film according to claim 3, characterized in that: The control sensor (133) is located on the side of the stop plate (123) facing the high end of the conveyor belt (100). When the stop plate (123) is forced to rotate, the stop plate (123) is within the sensing range of the control sensor (133).

6. The inclined feeding device for crushing plastic film according to claim 1, characterized in that: The control sensor (133) is one of a photoelectric sensor, an infrared sensor, and a laser sensor.

7. The inclined feeding device for crushing plastic film according to claim 3, characterized in that: A pull rod (140) is fixedly connected to the bottom of the rotating rod (122), and a pull rope (141) is fixedly connected to the bottom end of the pull rod (140). One end of the pull rope (141) is fixedly connected to the slide rail (130). The bottom end of the slide rail (130) is slidably provided with a base (143) fixed to the top of the mounting bracket (101), and the part of the base (143) that connects to the slide rail (130) is an inclined structure.

8. The inclined feeding device for crushing plastic film according to claim 7, characterized in that: A top roller is provided between the high end of the conveyor belt (100) and the stop plate (123). The top roller is located inside the conveyor belt (100) and protrudes from the surface of the conveyor belt (100). It is used to lift the top of the conveyor belt (100) upward so that the part of the conveyor belt (100) corresponding to the top roller forms a protrusion (150) to increase the friction between the plastic film (200) and the bottom of the stop plate (123).

9. The inclined feeding device for crushing plastic film according to claim 7, characterized in that: When the stop plate (123) is in a free state, the pull rope (141) also has a slack portion (142).

10. The inclined feeding device for crushing plastic film according to claim 7, characterized in that: It also includes a slow-descent device, which includes a piston cylinder (144) disposed at the top high end of the base (143), and a piston rod (145) is slidably disposed inside the piston cylinder (144), one end of the piston rod (145) being fixedly connected to the slide rail (130); The piston cylinder (144) is provided with a vent (146) and a baffle (147) at one end. The baffle (147) is rotatably disposed at the end of the piston cylinder (144), and the volume of the baffle (147) is smaller than the volume of the vent (146).

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