Safety device of mulch film slitting machine

Abstract

The utility model relates to film slitting equipment technical field discloses a safety device of mulch slitting machine, including slitting machine, the movable joint has the separation axle in the slitting machine, a plurality of first cranks are fixedly connected to the outside of separation axle, and the slitting roller is rotatively connected between two first cranks, and the front side of first crank is provided with the protection mechanism, and the protection mechanism includes L shape fixed plate and a plurality of second cranks, and L shape fixed plate is fixedly connected in one side in the slitting machine, and the bottom plate is fixedly connected to the position below L shape fixed plate.

Description

Technical Field

[0001] This utility model relates to the field of film slitting equipment technology, and in particular to a safety protection device for a plastic film slitting machine. Background Technology

[0002] A plastic film slitting machine is a device used to slit wide plastic film rolls into narrow rolls of different specifications. It is widely used in agriculture, packaging and other fields.

[0003] The mulch film slitting machine conveys the raw film through an unwinding mechanism, adjusts the tension via guide rollers, and completes the cutting with a circular or flat blade slitting assembly. The slitting film is then wound into neat rolls by a winding mechanism. To ensure the smooth conveying and slitting operation, the slitting and rewinding areas of the slitting machine are open. Therefore, personnel can easily approach these areas, where the high-speed rotating slitting blades and rewinding rollers can easily trap clothing and hair, causing cuts or entanglement injuries. When changing rolls after rewinding, if the machine is not completely stopped, hands can easily be caught between the roll and the mulch film, causing crushing or crushing injuries, seriously threatening the safety of operators. Some slitting machines with guardrails or other protective structures rely on personnel to actively open and close these structures, leading to situations where personnel forget to place the guardrails while the machine is running. Utility Model Content

[0004] The purpose of this utility model is to provide a safety protection device for a plastic film slitting machine. A protective mechanism is provided between the two first cranks. When the slitting roller stops, the second crank drives the guardrail to swing down to facilitate personnel operation. When running, the second crank drives the guardrail to swing up to prevent personnel from approaching. This can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A safety protection device for a plastic film slitting machine includes a slitting machine, a separating shaft movably connected inside the slitting machine, a plurality of first cranks fixedly connected to the outside of the separating shaft, and a slitting roller rotatably connected between two first cranks. A protective mechanism is provided on the front side of the first cranks. The protective mechanism includes an L-shaped fixing plate and a plurality of second cranks. The L-shaped fixing plate is fixedly connected to one side inside the slitting machine. A base plate is fixedly connected below the L-shaped fixing plate. A pressure plate is movably connected between the L-shaped fixing plate and the base plate. The second cranks are movably connected to the corresponding first crank side.

[0007] As a further preferred embodiment of this utility model, a plurality of reinforcing plates are fixedly connected between the L-shaped fixing plate and the base plate, the reinforcing plates being used to increase the connection strength between the L-shaped fixing plate and the base plate.

[0008] As a further preferred embodiment of this utility model, the L-shaped fixing plate and the base plate are further connected by multiple connecting bolts threaded together. A compression spring is fitted on the outside of each connecting bolt. The multiple connecting bolts can provide the pressure plate with an installation foundation and conditions for vertical movement, while the compression spring provides continuous downward pressure to the pressure plate.

[0009] As a further preferred embodiment of this utility model, the pressure plate has multiple mounting holes, and multiple ball bearings are rotatably connected to the inside of the mounting holes. The pressure plate is inserted and connected to multiple connecting bolts through the multiple mounting holes, and the bottom of the compression spring abuts against the pressure plate. After the multiple ball bearings are rotatably connected to the mounting holes, the friction between the mounting holes and the connecting bolts is reduced when the pressure plate is inserted and connected to the multiple connecting bolts through the mounting holes, thus ensuring the smooth vertical movement of the pressure plate.

[0010] As a further preferred embodiment of this utility model, a toothed rail is fixedly connected to the bottom of the pressure plate near the mounting hole.

[0011] As a further preferred embodiment of this utility model, one side of the second crank is rotatably connected to the lower side of the first crank via a pin. The second crank is also provided with a toothed groove, which meshes with the toothed rail. When the first crank rotates around the release shaft, the bottom of the first crank will drive the second crank to move to the rear side of the release shaft, so that the toothed groove meshes with and rotates on the toothed rail. This allows the second crank to rotate and retract synchronously when the first crank rotates. Furthermore, since the bottom of the first crank changes the height of one side of the second crank when it rotates around the release shaft, it works in conjunction with the vertically displaceable pressure plate to achieve continuous meshing between the toothed rail and the toothed groove.

[0012] As a further preferred embodiment of this utility model, a railing is fixedly connected between the second cranks. When the two second cranks rotate upward through the cooperation of the first crank and the pressure plate, the railing can be suspended in front of the separation shaft to prevent personnel from approaching the cutting area.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, a protective mechanism is provided between the two first cranks used for separating the slitting roller. The protective mechanism consists of an L-shaped fixing plate, a base plate, a pressure plate, and a second crank installed on one side of the two first cranks. When the slitting roller stops and separates from the contact roller to prepare for mulch film slitting, the two second cranks drive the guardrail to swing down and be stored, making it convenient for personnel to operate. When the two first cranks drive the slitting roller, the pressure plate works together to drive the second crank to swing up, so that the guardrail between the two second cranks is set at the front of the slitting machine to prevent personnel from approaching. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure installation of this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the second crank storage state of this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0020] Figure 6 This is a schematic diagram of the pressure plate structure of this utility model.

[0021] In the diagram: 1. Slitting machine; 2. Separating shaft; 3. First crank; 4. Slitting roller; 5. Protective mechanism; 6. L-shaped fixing plate; 7. Base plate; 8. Pressure plate; 9. Second crank; 10. Reinforcing plate; 11. Connecting bolt; 12. Compression spring; 13. Mounting hole; 14. Ball bearing; 15. Gear rail; 16. Gear groove; 17. Pin; 18. Guardrail. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1-6 As shown, the present invention provides a safety protection device for a plastic film slitting machine, including a slitting machine 1, a separating shaft 2 movably connected inside the slitting machine 1, a plurality of first cranks 3 fixedly connected to the outside of the separating shaft 2, and a slitting roller 4 rotatably connected between two first cranks 3. A protective mechanism 5 is provided on the front side of the first cranks 3. The protective mechanism 5 includes an L-shaped fixing plate 6 and a plurality of second cranks 9. The L-shaped fixing plate 6 is fixedly connected to one side inside the slitting machine 1. A base plate 7 is fixedly connected to the lower position of the L-shaped fixing plate 6. A pressure plate 8 is movably connected between the L-shaped fixing plate 6 and the base plate 7. The second cranks 9 are movably connected to the corresponding first cranks 3 on one side.

[0024] Multiple reinforcing plates 10 are fixedly connected between the L-shaped fixing plate 6 and the base plate 7. The reinforcing plates 10 increase the connection strength between the L-shaped fixing plate 6 and the base plate 7. Multiple connecting bolts 11 are also threaded between the L-shaped fixing plate 6 and the base plate 7. Compression springs 12 are fitted around the outside of each connecting bolt 11. The multiple connecting bolts 11 provide a mounting base for the pressure plate 8 and allow for vertical movement, while the compression springs 12 provide continuous downward pressure to the pressure plate 8. Multiple mounting holes 13 are provided inside the pressure plate 8. Multiple ball bearings 14 are rotatably connected inside the mounting holes 13. The pressure plate 8 is inserted through the mounting holes 13 and connected to the multiple connecting bolts 11. The bottom of the compression springs 12 abuts against the pressure plate 8. Rotating the ball bearings 14 inside the mounting holes 13 reduces the friction between the mounting holes 13 and the connecting bolts 11 when the pressure plate 8 is inserted through the mounting holes 13 and connected to the multiple connecting bolts 11, ensuring smooth vertical movement of the pressure plate 8. A toothed rail 15 is fixedly connected to the bottom of plate 8 near the mounting hole 13. One side of the second crank 9 is rotatably connected to the lower side of the first crank 3 via a pin 17. A toothed groove 16 is also provided on one side of the second crank 9. The toothed groove 16 meshes with the toothed rail 15. When the first crank 3 rotates around the separation shaft 2, the bottom of the first crank 3 will drive the second crank 9 to move to the rear side of the separation shaft 2, so that the toothed groove 16 meshes with and rotates on the toothed rail 15. This allows the second crank 9 to rotate synchronously and retract when the first crank 3 rotates. Since the bottom of the first crank 3 changes the height of one side of the second crank 9 when it rotates around the separation shaft 2, it works with the vertically displaceable pressure plate 8 to achieve continuous meshing between the toothed rail 15 and the toothed groove 16. A railing 18 is fixedly connected between the second cranks 9. When the two second cranks 9 rotate upwards through the cooperation of the first crank 3 and the pressure plate 8, the railing 18 can be suspended in front of the separation shaft 2 to prevent personnel from approaching the cutting area.

[0025] It should be noted that this utility model is a safety protection device for a plastic film slitting machine. When the slitting machine 1 is running, the cylinder inside the slitting machine 1 drives one of the first cranks 3 to rotate, thereby driving the separating shaft 2 to rotate and driving the other first crank 3 to rotate, so that the slitting roller 4 enters the working position. At the same time, the first crank 3 will drive the second crank 9 to move. Since the tooth groove 16 on one side of the second crank 9 is engaged with the toothed rail 15 of the pressure plate 8, as the first crank 3 rotates, the tooth groove 16 rotates along the toothed rail 15, causing the second crank 9 to swing upward. The compression spring 12 applies downward pressure to the pressure plate 8, so that when the height of the side of the second crank 9 with the tooth groove 16 changes due to the angle change with the first crank 3, the toothed rail 15 and the tooth groove 16 are always engaged. Thus, when the second crank 9 swings to the corresponding position, the railing 18 between the two second cranks 9 will be placed horizontally in front of the slitting machine 1, preventing personnel from approaching the slitting area.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for a plastic film slitting machine, comprising a slitting machine (1), wherein a separating shaft (2) is movably connected inside the slitting machine (1), and a plurality of first cranks (3) are fixedly connected to the outside of the separating shaft (2), and a slitting roller (4) is rotatably connected between two first cranks (3), and a protective mechanism (5) is provided on the front side of the first cranks (3), characterized in that: The protective mechanism (5) includes an L-shaped fixing plate (6) and a plurality of second cranks (9). The L-shaped fixing plate (6) is fixedly connected to one side of the slitting machine (1). A base plate (7) is fixedly connected below the L-shaped fixing plate (6). A pressure plate (8) is movably connected between the L-shaped fixing plate (6) and the base plate (7). The second cranks (9) are movably connected to one side of the corresponding first crank (3).

2. The safety protection device for a plastic film slitting machine according to claim 1, characterized in that: Multiple reinforcing plates (10) are fixedly connected between the L-shaped fixing plate (6) and the base plate (7).

3. The safety protection device for a plastic film slitting machine according to claim 1, characterized in that: The L-shaped fixing plate (6) and the base plate (7) are also connected by multiple connecting bolts (11), and a compression spring (12) is fitted on the outside of the connecting bolts (11).

4. The safety protection device for a plastic film slitting machine according to claim 3, characterized in that: The pressure plate (8) has multiple mounting holes (13) inside, and multiple balls (14) are rotatably connected inside the mounting holes (13). The pressure plate (8) is connected to multiple connecting bolts (11) through the multiple mounting holes (13), and the bottom of the compression spring (12) abuts against the pressure plate (8).

5. The safety protection device for a plastic film slitting machine according to claim 4, characterized in that: The pressure plate (8) is fixedly connected to a toothed rail (15) at the bottom near the mounting hole (13).

6. The safety protection device for a plastic film slitting machine according to claim 5, characterized in that: The second crank (9) is rotatably connected to the lower side of the first crank (3) via a pin (17). The second crank (9) is also provided with a toothed groove (16) on one side, which meshes with the toothed rail (15).

7. The safety protection device for a plastic film slitting machine according to claim 1, characterized in that: A railing (18) is fixedly connected between the second cranks (9).

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