Mulching film punching device

By installing a hole-punching device on the mulch film on the seeding and mulching machine, the problem of time-consuming and labor-intensive manual seedling placement is solved, and automated and regular hole formation is achieved, which improves the moisture retention effect of the seedling growth environment.

CN223979229UActive Publication Date: 2026-03-10SHANDONG ACADEMY OF AGRICULTURAL SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

In existing technologies, seedling placement using plastic film requires manual operation, which is time-consuming, labor-intensive, and the irregular openings affect seedling growth.

Method used

Design a perforation device for mulch film, which is installed on the soil covering roller of a seeding and mulching machine. The device achieves automated perforation through adjustable perforation parts and a film-breaking knife, and is combined with a rubber sleeve to prevent film tearing and ensure that the holes are aligned with the planting positions.

Benefits of technology

It has achieved automated seedling placement, saving manpower, improving the speed of seedling placement and the regularity of the holes, enhancing the moisture retention effect, and reducing labor intensity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of agricultural machinery, and particularly discloses a mulching film punching device which comprises a fixing belt, punching pieces with adjustable intervals are installed on the fixing belt, each punching piece comprises a base connected with the fixing belt, the upper end of each base is connected with a detachable film breaking knife, and the outer side of each film breaking knife is sleeved with a rubber sleeve. The device can be installed on a soil covering roller of a sowing and film covering machine for use, can replace manual seedling releasing, saves time, labor and labor, greatly saves manpower, improves seedling releasing speed, and compared with manual hole opening seedling releasing, hole opening is more regular and uniform, and the soil moisture preservation effect is better.
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Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a perforation device for mulch film. Background Technology

[0002] Mulch film, also known as ground cover film, is usually transparent or black PE film, but also comes in green and silver. It is used to cover the ground to increase soil temperature, retain soil moisture, maintain soil structure, prevent pests from attacking crops and diseases caused by certain microorganisms, and promote plant growth.

[0003] Seedling release under plastic film refers to the process in which, after seedlings emerge during the cultivation of crops such as cotton, holes are manually made in the plastic film covering the seedlings to allow them to grow through the holes, thus preventing the seedlings from being covered by the film and hindering their growth. Currently, seedling release is mostly done manually, which is time-consuming, labor-intensive, and can easily cause back and leg pain due to prolonged bending over, making it a physically demanding job. Utility Model Content

[0004] This utility model addresses the aforementioned shortcomings of existing technologies by providing a perforation device for mulch film. This device can be installed on the soil covering roller of a seeding and mulching machine, replacing manual seedling placement. It saves time, effort, and labor, significantly reducing manpower and increasing seedling placement speed. Compared to manual perforation, the perforations are more regular and uniform, resulting in better moisture retention.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A perforation device for mulch film includes a fixing belt, on which perforation components with adjustable spacing are installed. Each perforation component includes a base connected to the fixing belt, and a detachable film-breaking knife is connected to the upper end of the base. The outer side of the film-breaking knife is covered with a rubber sleeve.

[0007] Preferably, the fixing band has a nut and a support sleeve at both ends, one end of the stud is connected to the support sleeve, the stud and the support sleeve can rotate, and the other end of the stud is detachably engaged with the nut.

[0008] Preferably, a rotating block is fitted onto the stud, and the rotating block is positioned close to the support sleeve.

[0009] Preferably, the outer wall of the fixing belt is provided with a guide strip, the two sides of the guide strip are provided with guide grooves, and the guide strip is provided with positioning holes evenly distributed. The base is sleeved on the outside of the guide strip, and the two sides of the base are provided with buckles that cooperate with the guide grooves. The bottom of the membrane breaking knife is provided with a mounting post that connects to the base, and the lower end of the mounting post is provided with a positioning post that cooperates with the positioning hole.

[0010] Preferably, the upper end of the base is provided with a mounting groove that is threaded to the mounting post, and the bottom of the mounting groove is provided with a clearance hole that is threaded to the positioning post.

[0011] Preferably, a swivel ring is fitted around the upper outer side of the mounting post.

[0012] Preferably, the bottom of the rubber sleeve is connected and fixed to the swivel.

[0013] Preferably, the rubber sleeve has a circular corrugated structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model can be installed on the soil covering roller of a seeding and mulching machine, which can replace manual seedling placement, saving time, effort and labor, greatly saving manpower, and increasing the seedling placement speed. Compared with manual hole opening for seedling placement, the hole opening is more regular and uniform, and the moisture retention effect is better.

[0016] 2. This utility model adjusts the spacing and number of the membrane-breaking blades, increasing its versatility. The adjustment and positioning of the membrane-breaking blades are simple and convenient, making it easy to use. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 for Figure 1 A magnified structural diagram at point A;

[0020] Figure 4 This is a structural diagram of a punched component;

[0021] Figure 5 This is a schematic diagram of the base structure;

[0022] Figure 6 This is a schematic diagram of the membrane rupture knife;

[0023] Figure 7 This is a schematic diagram of the structure of this utility model in use;

[0024] In the diagram: 1-Fixing strap; 101-Guide strip; 102-Positioning hole; 103-Guide groove; 104-Nut; 105-Stud; 106-Rotating block; 107-Support sleeve; 2-Drilled part; 201-Base; 202-Snap buckle; 203-Rubber sleeve; 204-Mounting groove; 205-Leaning hole; 206-Film breaking knife; 207-Rotating ring; 208-Mounting column; 209-Positioning column; 3-Soil covering roller. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 As shown, a perforation device for mulch film includes a fixing belt 1, which is made of rubber and can be bent. The fixing belt 1 is equipped with perforation parts 2 with adjustable spacing. In use, the fixing belt 1 is fitted onto the soil covering roller 3 of the seeding and mulching machine.

[0027] like Figure 3 As shown, the two ends of the fixing belt 1 are respectively provided with nuts 104 and support sleeves 107. One end of the stud 105 is connected to the support sleeve 107, and the stud 105 and the support sleeve 107 can rotate. The other end of the stud 105 is detachably engaged with the nut 104. A rotating block 106 is fitted on the stud 105. The rotating block 106 is set close to the support sleeve 107. The stud 105 can be rotated by the rotating block 106, so that the stud 105 and the nut 104 are engaged, thereby forming the fixing belt 1 into a circle. At the same time, after the fixing belt 1 is fitted on the soil covering roller 3, the distance between the two ends of the fixing belt 1 can be adjusted by rotating the stud 105 to adjust the tightness.

[0028] like Figure 4 As shown, the punching component 2 includes a base 201 connected to the fixing strap 1. A detachable film-breaking blade 206 is connected to the upper end of the base 201. The film-breaking blade 206 has a cross-shaped structure and can punch a cross-shaped opening in the plastic film when pressed down. Figure 2 As shown, a guide strip 101 is provided on the outer wall of the fixing belt 1, and guide grooves 103 are provided on both sides of the guide strip 101. Positioning holes 102 are evenly provided on the guide strip 101. The base 201 is sleeved on the outer side of the guide strip 101. The base 201 has buckles 202 on both sides that cooperate with the guide grooves 103, so that the base 201 can move along the guide strip 101 to adjust its position. The bottom of the membrane breaking knife 206 is provided with a mounting post 208 that connects to the base 201. The lower end of the mounting post 208 is provided with a positioning post 209 that cooperates with the positioning holes 102 to position the membrane breaking knife 206.

[0029] like Figure 5 As shown, the upper end of the base 201 is provided with a mounting groove 204 that is threadedly engaged with the mounting post 208, and the bottom of the mounting groove 204 is provided with a clearance hole 205 that is engaged with the positioning post 209. The positioning post 209 passes through the clearance hole 205 and engages with the positioning hole 102.

[0030] likeFigure 6 As shown, a swivel ring 207 is fitted on the outer side of the upper end of the mounting post 208, which facilitates the assembly and disassembly of the mounting post 208.

[0031] The outer side of the rupture blade 206 is covered with a rubber sleeve 203. The bottom of the rubber sleeve 203 is connected and fixed to the rotating ring 207. The rubber sleeve 203 has a circular corrugated structure and is elastic. During use, it can not only protect the rupture blade 206 from damage or injury to personnel, but also, after punching, the compressed rubber sleeve 203 can push the film open to achieve demolding.

[0032] like Figure 7 As shown, during use, the fixing strap 1 is fitted onto the covering roller 3 of the seeding and mulching machine. The covering roller 3 is connected to the seeding structure chain. The spacing of the film-breaking blades 206 is adjusted according to the seed spacing of the seeding device to ensure that the hole spacing matches the seed spacing, and the hole positions on the film are aligned with the cotton seed landing position, guaranteeing that cotton seedlings can grow through the holes in the film. When the seeder is working, as the covering roller 3 rotates and the machine moves forward, the punching device contacts the film and punches holes. The rubber sleeve 203 deforms under pressure. When it leaves the film, the rubber sleeve 203 returns to its original shape and pushes the film away, achieving separation of the film from the film-breaking blades 206, thus preventing film tearing or pulling during the rotation of the punching device.

[0033] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A mulch film on-press perforating apparatus characterized by: The utility model relates to a fixing belt, which is provided with adjustable spacing punching elements mounted thereon, the punching elements comprise a base connected to the fixing belt, and a detachable film breaking knife is connected to the upper end of the base, and a rubber sleeve is sleeved on the outer side of the film breaking knife.

2. The on-film punching device of claim 1, wherein: The fixing belt is provided with a nut and a support sleeve at two ends respectively, a stud is connected in the support sleeve, the stud can rotate relative to the support sleeve, and one end of the stud is detachably connected with the nut.

3. A mulch film on-press perforating apparatus as claimed in claim 2 wherein: A rotating block is sleeved on the stud, and the rotating block is arranged close to the support sleeve.

4. The mulch film on-press perforating apparatus of claim 1 wherein: A guide strip is arranged on the outer side wall of the fixing belt, guide grooves are arranged on the two sides of the guide strip, positioning holes are uniformly arranged on the guide strip, the base is sleeved on the outer side of the guide strip, buckles matched with the guide grooves are arranged on the two sides of the base, the bottom of the film breaking knife is provided with a mounting column connected with the base, and a positioning column matched with the positioning hole is arranged on the lower end of the mounting column.

5. A mulch film on-press perforating apparatus as claimed in claim 4 wherein: The upper end of the base is provided with a mounting groove matched with the mounting column in a threaded mode, and the bottom of the mounting groove is provided with a giving hole matched with the positioning column.

6. A mulch film on-press perforating apparatus as claimed in claim 5 wherein: A rotating ring is sleeved on the outer side of the upper end of the mounting column.

7. A mulch film on-press perforating apparatus as claimed in claim 6 wherein: The bottom of the rubber sleeve is connected and fixed with the rotating ring.

8. The mulch film on-press perforating apparatus of claim 1 wherein: The rubber sleeve is a circular corrugated structure.