A roll changing device for mulch film production

Abstract

The utility model relates to a roll changing device for mulch production and belongs to the technical field of agricultural mulch production. The technical scheme is that the rear ends of rocker arm one and rocker arm two are hinged on a fork mounting plate, the front ends of rocker arm one and rocker arm two are hinged with a left fork, rocker arm one, rocker arm two and the left fork constitute a double rocker mechanism on the fork mounting plate, and the left fork is driven to move up and down along the vertical direction; the middle of the right fork is hinged on the fork mounting plate to naturally hang down and be parallel with the left fork, a locking plate is hinged on the fork mounting plate through a right fork limiting pin, the locking plate is a lever mechanism, the right fork limiting pin is a fulcrum, a clamping groove is arranged at the front end of the locking plate to match the top of the right fork, and the locking right fork keeps parallel with the left fork. The utility model has the beneficial effects that the winding of a well-wound mulch roll and the moving position work of a new paper tube core can be completed through a simple mechanism, the cost is reduced, the production efficiency is improved, the mechanism is simple, the volume is small, and the utility model is convenient to use.

Description

Technical Field

[0001] This utility model relates to a roll-changing device for agricultural mulch film production, belonging to the field of agricultural mulch film production technology. Background Technology

[0002] Mulching film, also known as ground cover film, is an agricultural cultivation technique that has the functions of increasing temperature, retaining water and fertilizer, improving soil physical and chemical properties, enhancing soil fertility, suppressing weed growth, and reducing disease. In cases of continuous rainfall, it also reduces humidity, thereby promoting plant growth and development, earlier flowering and fruiting, increasing yield, and reducing labor costs. The greatest effect of mulching is increasing soil temperature. In the mulching film production process, continuously produced mulching film is rolled into rolls on paper cores on mulching film production equipment. After the roll is rolled, it is cut using a known mulching film cutting device. The cutting device then retracts below the roller conveyor, and the rolled mulching film is placed on the roller conveyor in front of the cutting device. Simultaneously, a new paper core is placed on the roller conveyor behind the cutting device to continue rolling the mulching film. Existing plastic film production technologies can automatically cut the plastic film using upward and retracting cutters; however, they cannot automatically change rolls. Manual operation is generally required. After the plastic film is cut, the rolled-up film is manually removed and rewound. A new paper core is placed on the equipment, and a new roll of plastic film begins to be rolled on that core. This process is repeated, which increases labor costs and reduces production efficiency. Some have used electrically controlled robotic arms to handle and change plastic film rolls, but this method suffers from high costs, complex mechanisms and movements, large size, and inconvenience. Utility Model Content

[0003] The purpose of this utility model is to provide a roll-changing device for mulch film production. Through a simple mechanism, it can complete the winding of the mulch film roll and the movement of the new paper core, thereby reducing costs and improving production efficiency. The mechanism is simple, small in size, and easy to use, solving the above-mentioned technical problems existing in the prior art.

[0004] The technical solution of this utility model is:

[0005] A film rolling device for mulch film production includes two identical clamping mechanisms, respectively arranged on both sides of the roller conveyor of the mulch film production equipment. Each clamping mechanism includes a guide rail, a lead screw, a lead screw sliding seat, a locking plate, a fork mounting plate, a rocker arm one, a rocker arm two, a left fork, and a right fork. The guide rail and lead screw are arranged parallel to each other and positioned above the mulch film cutting device of the mulch film production equipment. The lead screw and lead screw sliding seat are threadedly matched, and rotation of the lead screw drives the lead screw sliding seat to slide along the guide rail. The lead screw sliding seat is equipped with a fork mounting plate, on which rocker arm one and rocker arm two are mounted. The rear ends of rocker arm one and rocker arm two are hinged to the fork mounting plate, and the front ends of rocker arm one and rocker arm two are hinged to the left fork. Rocker arm one, rocker arm two, and the left fork are mounted on the fork mounting plate. The plate forms a double rocker mechanism, which drives the left fork to move up and down vertically. The middle of the right fork is hinged to the fork mounting plate and hangs down naturally, parallel to the left fork. The fork mounting plate is hinged to a locking plate through a right fork limiting pin. The locking plate is a lever mechanism, with the right fork limiting pin as the fulcrum. The front end of the locking plate has a slot that matches the top of the right fork, locking the right fork and keeping it parallel to the left fork. The distance between the left and right forks matches the outer diameter of the paper tube core. Multiple rollers are arranged vertically at the bottom of both the left and right forks. The rollers of the left and right forks clamp the paper tube core of the mulch film roll, and the right fork pushes the paper tube core of the mulch film roll forward. The two clamping mechanisms clamp and push the two ends of the paper tube core forward, respectively.

[0006] This invention uses a rotating screw to drive the left and right shift forks to move left and right along the guide rail, adjusting their working positions. The distance between the left and right shift forks matches the outer diameter of the paper core, clamping the paper core of the mulch film roll. By moving the left shift fork forward, the paper core of the mulch film roll is moved forward on the roller conveyor.

[0007] The finished product station of the mulch film production equipment continuously winds the mulch film onto a paper core. The paper core is at the center of the wound mulch film roll, and the mulch film is wrapped around it. In the mulch film production industry, to facilitate subsequent transportation and handling, the length of the paper core is greater than the width of the mulch film. Both ends of the wound mulch film roll expose a section of the paper core. Sometimes, to facilitate winding, metal ends are inserted into both ends of the paper core as counterweights. The strength of the paper core is sufficient to support the weight of the entire wound mulch film roll. This utility model uses rollers to clamp and move the paper core forward without damaging it. In addition, the overall weight of the wound mulch film roll is about 10 kg. This utility model can clamp and move the wound mulch film roll or paper core forward on the roller conveyor. Furthermore, in existing mulch film cutting equipment, after cutting the mulch film, it needs to retreat below the roller conveyor to avoid affecting subsequent mulch film rolls. In this way, the mulch film cutting equipment will not affect the forward movement of the paper core.

[0008] Furthermore, a rocker arm limiting pin is provided below the rocker arm one on the fork mounting plate. The rocker arm limiting pin limits the downward swing position of the rocker arm one. The distance between the left and right forks matches the outer diameter of the paper tube core. At the same time, the rocker arm limiting pin assists the left fork in pushing the paper tube core of the film roll forward on the roller conveyor.

[0009] Furthermore, the guide rail is mounted on a fixed plate, and screw fixing plates are respectively provided at both ends of the fixed plate, with the two ends of the screw respectively set on the corresponding screw fixing plates.

[0010] Furthermore, the lead screw sliding seat is connected to the shift fork mounting plate via a movable plate, the movable plate having a bent structure, which allows the shift fork mounting plate to be arranged vertically.

[0011] Furthermore, the bottom of the left shift fork is provided with an outwardly extending auxiliary wheel; the auxiliary wheel of the left shift fork first touches the paper tube core, the auxiliary wheel pushes the left shift fork to move upward, after passing the paper tube core, the auxiliary wheel disengages from the paper tube core, and the left shift fork moves downward to reset.

[0012] Furthermore, the rear end of the locking plate is provided with a drive rod, and external force drives the locking plate to rotate through the drive rod, thereby opening or locking the right shift fork.

[0013] Furthermore, a drive motor is provided on the lead screw fixing plate at one end of the lead screw, and the drive motor drives the lead screw to rotate.

[0014] The beneficial effects of this utility model are: the winding of the rolled mulch film and the movement of the new paper core can be completed through a simple mechanism, which reduces costs, improves production efficiency, and is simple, small in size and easy to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0016] Figure 2 This is a perspective view of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the right shift fork locking according to an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the right shift fork being opened according to an embodiment of this utility model;

[0019] Figure 5 This is a schematic diagram of the installation environment of an embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram illustrating the handling of the rolled-up mulch film to the finished product drop point according to an embodiment of this utility model;

[0021] Figure 7This is a schematic diagram of the rolled-up mulch film held in a specific embodiment of this utility model.

[0022] Figure 8 This is a schematic diagram of the rolled-up mulch film being laid down according to an embodiment of this utility model;

[0023] Figure 9 This is a schematic diagram of the overall structure of the paper tube core in an embodiment of this utility model;

[0024] Figure 10 This is a schematic diagram of the contact between the paper core and an embodiment of the present invention;

[0025] Figure 11 This is a schematic diagram of an embodiment of the present invention located above the paper core;

[0026] Figure 12 This is a schematic diagram of the paper tube core clamping embodiment of this utility model;

[0027] In the diagram: 11. Mulch film; 12. Roller conveyor; 13. Paper core tube; 14. Rolled mulch film; 15. Mulch film cutting equipment; 16. Mulch film production equipment; 17. Drive motor; 18. Fixing plate; 19. Guide rail; 20. Screw fixing plate; 21. Screw; 22. Screw sliding seat; 23. Locking plate; 24. Moving plate; 25. Fork mounting plate; 26. Rocker arm one; 27. Rocker arm two; 28. Left fork; 29. ​​Right fork; 30. Auxiliary wheel; 31. Roller; 32. Rocker arm limit pin; 33. Right fork limit pin; 34. Slot; 35. Drive rod. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] See attached document Figure 1-5A film rolling device for mulch film production includes two identical clamping mechanisms, respectively arranged on both sides of the roller conveyor of the mulch film production equipment 16. Each clamping mechanism includes a guide rail 19, a lead screw 21, a lead screw sliding seat 22, a locking plate 23, a fork mounting plate 25, a rocker arm 1 26, a rocker arm 27, a left fork 28, and a right fork 29. The guide rail 19 and the lead screw 21 are arranged parallel to each other and are installed on the mulch film cutting device 15 of the mulch film production equipment 16. Above, the lead screw 21 is threadedly matched with the lead screw sliding seat 22. The rotation of the lead screw 21 drives the lead screw sliding seat 22 to slide along the guide rail 19. The lead screw sliding seat 22 is provided with a shift fork mounting plate 25. The shift fork mounting plate 25 is provided with a rocker arm 26 and a rocker arm 27. The rear ends of the rocker arm 26 and the rocker arm 27 are hinged to the shift fork mounting plate 25. The front ends of the rocker arm 26 and the rocker arm 27 are both hinged to the left shift fork 28. The rocker arm 26, the rocker arm 27 and the left shift fork 28 are connected to each other. The shift fork 28 forms a double rocker mechanism on the shift fork mounting plate 25, driving the left shift fork 28 to move up and down vertically. The right shift fork 29 is hinged in the middle on the shift fork mounting plate 25 and hangs down naturally parallel to the left shift fork 28. The shift fork mounting plate 25 is hinged to the locking plate 23 through the right shift fork limiting pin 33. The locking plate 23 is a lever mechanism, with the right shift fork limiting pin 33 as the fulcrum. The front end of the locking plate 23 is provided with a groove 34 that connects to the top of the right shift fork 29. The right fork 29 and the left fork 28 are locked in parallel, and the distance between the left fork 28 and the right fork 29 matches the outer diameter of the paper core 13. Multiple rollers 31 are vertically arranged at the lower part of both the left fork 28 and the right fork 29. The rollers 31 of the left fork 28 and the right fork 29 clamp the paper core of the mulch film roll, and the right fork 29 moves the paper core of the mulch film roll forward. The two clamping mechanisms respectively clamp and move the two ends of the paper core forward. This invention drives the left fork 28 and the right fork 29 to move left and right along the guide rail by rotating the lead screw 21, adjusting the working position of the left fork 28 and the right fork 29. The distance between the left fork 28 and the right fork 29 matches the outer diameter of the paper core 13, clamping the paper core of the mulch film roll. The forward movement of the left fork 28 moves the paper core of the mulch film roll forward on the roller conveyor 12.

[0030] The finished product station of the mulch film production equipment 16 continuously winds the mulch film 11 onto the paper core. The center of the wound mulch film roll 14 is the paper core, and the mulch film is wrapped around it. In the field of mulch film production, in order to facilitate subsequent transportation and handling, the length of the paper core is greater than the width of the mulch film. Both ends of the wound mulch film roll 14 expose a section of the paper core. Sometimes, in order to facilitate film winding, metal ends are inserted into both ends of the paper core as counterweights. The strength of the paper core is sufficient to support the weight of the entire wound mulch film roll 14. This utility model uses rollers to clamp and push the paper core forward without causing damage to the paper core. In addition, the overall weight of the wound mulch film roll 14 is about 10 kg. This utility model can clamp and push the wound mulch film roll 14 or the paper core 13 forward on the roller conveyor 12. In addition, after the existing mulch film cutting device 15 cuts the mulch film 11, it needs to retreat below the roller conveyor 12 in order not to affect the subsequent mulch film roll. In this way, the mulch film cutting device 15 will not affect the forward movement of the paper core 13.

[0031] See attached document Figure 3 A rocker arm limiting pin 32 is provided below the rocker arm 26 on the fork mounting plate 25. The rocker arm limiting pin 32 limits the downward swing position of the rocker arm 26. The distance between the left fork 28 and the right fork 29 matches the outer diameter of the paper tube core 13. At the same time, the rocker arm limiting pin 32 assists the left fork 28 to push the paper tube core of the film roll forward on the roller conveyor 12.

[0032] See attached document Figure 1 The guide rail 19 is mounted on the fixed plate 18, and the two ends of the fixed plate 18 are respectively provided with screw fixing plates 20, and the two ends of the screw 21 are respectively provided on the corresponding screw fixing plates 20.

[0033] See attached document Figure 1 The lead screw sliding seat 22 is connected to the shift fork mounting plate 25 via a moving plate 24. The moving plate 24 has a bent structure, which makes the shift fork mounting plate 25 vertically arranged.

[0034] See attached document Figure 2-4 The bottom of the left shift fork 28 is provided with an outwardly extending auxiliary wheel 30; the auxiliary wheel 30 of the left shift fork 28 first touches the paper tube core, the auxiliary wheel 30 pushes the left shift fork 28 to move upward, after passing the paper tube core, the auxiliary wheel 30 disengages from the paper tube core, and the left shift fork 28 moves downward to reset.

[0035] See attached document Figure 3-4 The locking plate 23 is provided with a drive rod 35 at its rear end. The locking plate 23 is rotated by external force (manual or electric) to open or lock the right shift fork 29.

[0036] See attached document Figure 1 A drive motor 17 is provided on the lead screw fixing plate 20 at one end of the lead screw 21, and the drive motor 17 drives the lead screw 21 to rotate.

[0037] See attached document Figure 5 and 7 After the plastic film roll 14 is rolled up, the plastic film 11 is cut by the plastic film cutting device 15. The plastic film cutting device 15 is then moved back below the roller table 12, and the rolled plastic film roll 14 is placed on the roller table 12 in front of the plastic film cutting device 15. At the same time, a new paper core 13 is placed on the roller table 12 behind the plastic film cutting device 15 to continue rolling the plastic film 11.

[0038] See attached document Figure 7 After the plastic film 11 is cut, the roller of the left shift fork 28 of this invention rests against the left side of the paper core of the rolled plastic film roll 14, and the roller of the right shift fork 29 rests against the right side of the paper core and is locked by the slot 34 on the locking plate 23; the screw 21 rotates to drive the left shift fork 28 forward, and the left shift fork 28 moves the rolled plastic film roll 14 forward on the roller conveyor; refer to the attached drawing. Figure 6 and 8 After reaching the finished product drop point, the slot 34 on the locking plate 23 is opened, the locked right fork 29 is opened, and the wound film roll 14 falls from the roller conveyor 12 to complete the winding.

[0039] Then, refer to the appendix. Figure 9 The drive motor 17 drives the lead screw 21 to rotate, moving the right shift fork 29 and the left shift fork 28 above the newly placed paper tube core 13; see attached... Figure 10 During the movement, the auxiliary wheel 30 of the left shift fork 28 first touches the paper tube core 13. The auxiliary wheel 30 pushes the left shift fork 28 upward. After the left shift fork 28 passes the paper tube core 13, the auxiliary wheel 30 disengages from the paper tube core 13, and the left shift fork 28 moves downward to reset. (Refer to the attached diagram.) Figure 11 At this point, the paper core 13 has begun to roll the mulch film. Because the mulch film is relatively thin at the beginning of the roll, the paper core is located below the roller gap of the roller conveyor 12. Due to the limited length of the right fork 29 and the left fork 28, they cannot clamp the paper core 13. (See attached diagram.) Figure 11 At this time, the right shift fork 29 and the left shift fork 28 are positioned above the paper core 13, waiting; refer to the appendix. Figure 12As the plastic film on the paper core 13 rolls thicker and thicker, the height of the paper core 13 continuously increases, gradually entering between the right fork 29 and the left fork 28. The rollers on the right fork 29 and the left fork 28 clamp the end of the paper core 13. The roller of the left fork 28 rests against the left side of the paper core 13, and the roller of the right fork 29 rests against the right side of the paper core 13 and is locked by the slot 34 on the locking plate 23. The screw 21 rotates to drive the left fork 28 forward. The left fork 28 moves the paper core 13 forward on the roller table, over the plastic film cutting device 15, to the roller table in front of the plastic film cutting device 15, opens the slot 34 on the locking plate 23, and the locked right fork 29 opens. The paper core 13 continues to roll on the roller table behind the plastic film cutting device 15. After the rolling is completed, the plastic film 11 is cut by the plastic film cutting device 15, and the previous winding operation is repeated.

[0040] The above control process can be controlled manually or by a PLC. The control circuit and control program are also well known in the art.

Claims

1. A film roll changing device for mulch film production, characterized in that: Two clamping mechanisms with identical structures are arranged on both sides of the roller conveyor of the mulch film production equipment (16). The clamping mechanism includes a guide rail (19), a lead screw (21), a lead screw sliding seat (22), a locking plate (23), a fork mounting plate (25), a rocker arm one (26), a rocker arm two (27), a left fork (28), and a right fork (29). The guide rail (19) and the lead screw (21) are arranged parallel to each other and are set above the mulch film cutting device (15) of the mulch film production equipment (16). The lead screw (21) and the lead screw sliding seat are arranged parallel to each other and are set above the mulch film cutting device (15) of the mulch film production equipment (16). The moving seat (22) is threaded and matched. The screw (21) rotates and drives the screw sliding seat (22) to slide along the guide rail (19). The screw sliding seat (22) is provided with a shift fork mounting plate (25). The shift fork mounting plate (25) is provided with rocker arm one (26) and rocker arm two (27). The rear ends of rocker arm one (26) and rocker arm two (27) are hinged to the shift fork mounting plate (25). The front ends of rocker arm one (26) and rocker arm two (27) are both hinged to the left shift fork (28). Rocker arm one (26), rocker arm two (27) and left shift fork (28) are connected to each other. A double rocker mechanism is formed on the fork mounting plate (25), which drives the left fork (28) to move up and down in the vertical direction; the middle of the right fork (29) is hinged on the fork mounting plate (25) and hangs down naturally parallel to the left fork (28). The fork mounting plate (25) is hinged to the locking plate (23) by the right fork limiting pin (33). The locking plate (23) is a lever mechanism, and the right fork limiting pin (33) is the fulcrum. The front end of the locking plate (23) is provided with a slot (34) that matches the top of the right fork (29). The right fork (29) and the left fork (28) are kept parallel. The distance between the left fork (28) and the right fork (29) matches the outer diameter of the paper core (13). Multiple rollers (31) are arranged vertically at the lower part of the left fork (28) and the right fork (29). The rollers (31) of the left fork (28) and the right fork (29) clamp the paper core (13) of the mulch film roll, and the right fork (29) pushes the paper core (13) of the mulch film roll forward. The two clamping mechanisms clamp and push the two ends of the paper core forward, respectively.

2. The film rolling device for mulch film production according to claim 1, characterized in that: The rocker arm limiting pin (32) is provided below the rocker arm 1 (26) on the fork mounting plate (25), and the rocker arm limiting pin (32) limits the position of the rocker arm 1 (26) swinging downward.

3. A film rolling device for mulch film production according to claim 1 or 2, characterized in that: The guide rail (19) is mounted on the fixed plate (18), and the two ends of the fixed plate (18) are respectively provided with screw fixing plates (20), and the two ends of the screw (21) are respectively provided on the corresponding screw fixing plates (20).

4. The film rolling device for mulch film production according to claim 3, characterized in that: The lead screw slide seat (22) is connected to the shift fork mounting plate (25) via a moving plate (24).

5. A film rolling device for mulch film production according to claim 1 or 2, characterized in that: The bottom of the left shift fork (28) is provided with an outwardly extending auxiliary wheel (30).

6. A film rolling device for mulch film production according to claim 1 or 2, characterized in that: The locking plate (23) has a drive rod (35) at its rear end.

7. A film rolling device for mulch film production according to claim 1 or 2, characterized in that: A drive motor (17) is provided on the screw fixing plate (20) at one end of the screw (21), and the drive motor (17) drives the screw (21) to rotate.

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