Flame-heated hot melt plastic film perforation and film removal device

Abstract

The flame-heated, heat-melting type mulch film opening and removal device belongs to agricultural machinery. It features a fixed connector, a push-button ignition switch, and a flame nozzle on a tubular handle. A gas cylinder connects to the tubular handle cavity via the connector. A fixed flame shield is fitted over the flame nozzle. A grooved wheel-shaped cylindrical cutter holder is fixed to the end of the flame shield. Multiple arc-shaped melting film cutters are axially movable on the grooved wheel-shaped cylindrical cutter holder via a cutter rod, a limit block, and a pressure spring. These arc-shaped melting film cutters are arranged in a circular hole configuration. An inverted conical film-removing needle is fixed inside the grooved wheel-shaped cylindrical cutter holder, located on the inner side of the arc-shaped melting film cutters. This device uses a heat-melting method to complete the opening operation on the mulch film. It features a novel, unique, and reasonable structure, labor-saving, time-saving, high opening efficiency, good quality, reliable film removal, and strong adaptability.

Description

Technical Field

[0001] This invention belongs to agricultural machinery and mainly relates to a flame-heated, heat-melting plastic film opening and removal tool that is manually operated. Background Technology

[0002] Tobacco cultivation has traditionally employed a method of first raising seedlings and then transplanting them. Currently, to ensure and improve tobacco quality and yield, a common practice before transplanting is to lay a thin film over the seedbed in the field, then mechanically create holes in the film before transplanting the seedlings. However, in practice, it has been found that the uneven surface of the soil covered with the film, sometimes containing large clods, prevents the film from adhering tightly to the soil, creating gaps. This makes creating and removing the film extremely difficult, resulting in low efficiency and poor quality, severely impacting and hindering tobacco transplanting operations. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art and, in combination with the actual needs of current tobacco transplanting operations, to design a new type of flame-heated hot-melt mulch film opening and removal device. This device aims to achieve strong adaptability to mulched soil conditions, quick and convenient film melting and opening, good opening quality, high efficiency, reliable film removal, and to avoid residual film left on the soil inside the round hole.

[0004] The purpose of this invention is achieved as follows: A socket, a push-button ignition switch, and a flame nozzle are sequentially fixed to a tubular handle from left to right. A gas canister is connected and installed on the socket, communicating with the tubular handle cavity. A threaded hole A is provided on the outer wall of the flame nozzle. A flame shield with a threaded hole B is fitted onto the outside of the flame nozzle. The flame shield is fixed to the outside of the flame nozzle by sequentially inserting and tightening screws into threaded holes B and A. A grooved wheel-shaped cylindrical cutter holder is fixed to the right end of the flame shield. An axial through hole is opened on the outer circumference of the grooved wheel-shaped cylindrical cutter holder. Multiple cutter bars are inserted into the through hole, allowing axial reciprocating movement. A grooved wheel-shaped cylindrical cutter bar is located on the left end of the cutter bar. A limiting block is fixedly installed on the outer left end of the base. The limiting block is in contact with or disengaged from the outer wall of the left end of the grooved wheel-shaped cylindrical cutter holder. An arc-shaped melting film cutter is fixedly installed on the right end of the cutter bar, on the outer right side of the grooved wheel-shaped cylindrical cutter holder. Multiple arc-shaped melting film cutters are arranged in a circular hole shape. A pressure spring is fitted and installed on the cutter bar, inside the groove of the grooved wheel-shaped cylindrical cutter holder. The right end of the pressure spring is axially positioned on the cutter bar, and the left end of the pressure spring is in extrusion contact with the inner wall of the left side of the groove of the grooved wheel-shaped cylindrical cutter holder. An inverted conical film-taking needle is fixedly installed in the inner hole of the grooved wheel-shaped cylindrical base. The inverted conical film-taking needle is located inside the arc-shaped melting film cutter. This constitutes a flame-heated hot-melt type mulch film opening and taking device.

[0005] This invention creates circular holes in the mulch film using a hot-melt method, which is unaffected by the surface condition of the soil covering the film. It solves the problems of traditional mechanical sliding cutting or punching for hole opening. It features a novel, unique, and reasonable structure, saves labor, time and effort in operation, has high hole opening efficiency, good quality, reliable film removal, and strong adaptability. Attached Figure Description

[0006] Figure 1 This is an exploded view of the overall structure of a flame-heated, heat-melting mulch film opening and removal device;

[0007] Figure 2 This is a schematic diagram of the overall structure of a flame-heated, heat-melting type mulch film opening and removal device;

[0008] Figure 3 yes Figure 2 A partial sectional view from AA direction;

[0009] Figure 4 This is a schematic diagram of the assembly structure of the arc-shaped melting blade, the blade holder, and the limiting block.

[0010] Part number description in the image:

[0011] 1. Tubular handle; 2. Threaded hole A; 3. Flame nozzle; 4. Flame shield cover; 5. Inverted conical film-taking needle; 6. Arc-shaped melting film knife; 7. Knife bar; 8. Through hole; 9. Limiting block; 10. Threaded hole B; 11. Screw; 12. Pressure spring; 13. Gas canister; 14. Socket; 15. Push-button ignition switch; 16. Grooved wheel-shaped cylindrical knife holder. Detailed Implementation

[0012] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. A flame-heated, heat-melting type mulch film opening and removal device comprises, from left to right, a socket seat 14, a push-button ignition switch 15, and a flame nozzle 3, all fixedly mounted on a tubular handle 1. A gas cylinder 13 is connected and installed on the socket seat 14, communicating with the cavity of the tubular handle 1. A threaded hole A2 is provided on the outer wall of the flame nozzle 3. A fire shield cover 4 with a threaded hole B10 is fitted onto the outside of the flame nozzle 3. The fire shield cover 4 is fixed to the outside of the flame nozzle 3 by sequentially inserting and tightening screws 11 into the threaded holes B10 and A2. A grooved wheel-shaped cylindrical cutter holder 16 is fixed to the right end of the fire shield cover 4. A through hole 8 is axially formed on the outer circumference of the grooved wheel-shaped cylindrical cutter holder 16. Multiple cutter rods 7 are axially reciprocatingly inserted into the through hole 8. A limiting block 9 is fixedly installed on the left end of the grooved wheel-shaped cylindrical cutter holder 16 at the outer left end. The limiting block 9 is in contact with or disengaged from the outer wall of the left end of the grooved wheel-shaped cylindrical cutter holder 16. An arc-shaped melting blade 6 is fixedly installed on the right end of the cutter shank 7 at the outer right end of the grooved wheel-shaped cylindrical cutter holder 16. Multiple arc-shaped melting blades 6 are arranged in a circular hole shape. A pressure spring 12 is fitted and installed on the cutter shank 7 at the inside of the groove of the grooved wheel-shaped cylindrical cutter holder 16. The right end of the pressure spring 12 is axially positioned on the cutter shank 7, and the left end of the pressure spring 12 is in extrusion contact with the inner wall of the left side of the groove of the grooved wheel-shaped cylindrical cutter holder 16. An inverted conical film-taking needle 5 is fixedly installed in the inner hole of the grooved wheel-shaped cylindrical cutter holder 16. The inverted conical film-taking needle 5 is located inside the arc-shaped melting blade 6.

[0013] When in use, the gas supplied from the gas cylinder 13 to the flame nozzle 3 through the socket 14 and the tubular handle 1 is ignited by the push-button ignition switch 15. The burning flame, guided and controlled by the flame shield 4, heats the arc-shaped melting blade 6 by the principle of heat conduction. When the temperature of the arc-shaped melting blade 6 reaches the melting temperature of the mulch film, hold the tubular handle 1 with both hands and reliably attach the multiple arc-shaped melting blades 6, which are arranged in a circular hole shape, to the mulch film with the cooperation of the blade rod 7 and the pressure spring 12, melting the film to form a circular hole. At the same time, continue to press down the arc-shaped melting blade 6 moderately, and the blade rod 7 moves upward on the grooved wheel-shaped cylindrical blade holder 16. The pressure of the pressure spring 12 increases, and simultaneously, the downward-moving inverted conical film-retrieving needle 5 is inserted into the circular residual film that has melted in the circular hole and is firmly attached to prevent it from falling off. Then, lift the arc-shaped melting blade 6 to detach it from the mulch film. Under the action of the pressure spring 12, the arc-shaped melting blade 6 returns to its initial position at the beginning of the operation, completing one continuous operation of opening and film retrieval. Repeat the operation in this manner.

Claims

1. A flame heated hot melt mulch film perforator, characterized by: A socket (14), a push-button ignition switch (15), and a flame nozzle (3) are fixedly mounted on the tubular handle (1) from left to right. A gas cylinder (13) is connected and installed on the socket (14). The gas cylinder (13) is connected to the tubular handle (1). A threaded hole A (2) is provided on the outer wall of the flame nozzle (3). A flame shield (4) with a threaded hole B (10) is fitted on the outside of the flame nozzle (3). Screws are used to secure the flame nozzle (3). (11) The fire shield (4) is fixed to the outside of the flame nozzle (3) by sequentially inserting and tightening the threaded holes B (10) and A (2). A grooved wheel-shaped cylindrical cutter holder (16) is fixed to the right end of the fire shield (4). A through hole (8) is opened axially on the outer part of the circumference of the grooved wheel-shaped cylindrical cutter holder (16). Multiple cutter bars (7) are inserted into the through hole (8) respectively, which can be axially reciprocated. At the left end of the cutter bar (7) A limiting block (9) is fixedly installed on the outer left end of the grooved wheel-shaped cylindrical tool holder (16). The limiting block (9) is in contact with or disengaged from the outer wall of the left end of the grooved wheel-shaped cylindrical tool holder (16). An arc-shaped melting blade (6) is fixedly installed on the right end of the tool holder (7) on the outer right end of the grooved wheel-shaped cylindrical tool holder (16). The multiple arc-shaped melting blades (6) are arranged in a circular hole shape. On the tool holder (7), located in the groove A pressure spring (12) is fitted inside the groove of the wheel-shaped cylindrical cutter holder (16). The right end of the pressure spring (12) is axially positioned on the cutter bar (7). The left end of the pressure spring (12) is in a pressing contact with the inner wall of the left side of the groove of the wheel-shaped cylindrical cutter holder (16). An inverted conical film-taking needle (5) is fixed in the inner hole of the wheel-shaped cylindrical cutter holder (16). The inverted conical film-taking needle (5) is located inside the arc-shaped melting knife (6).

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