A slitting device for mulch film blow molding

By designing the slitting mechanism and protective mechanism of the slitting device, the problems of time-consuming blade spacing adjustment and inconvenient replacement in the blow molding of mulch film were solved, achieving a fast and safe slitting effect.

CN224675068UActive Publication Date: 2026-08-25TAIAN BOYANG CHEM TECH
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Patent Information

Application Number
CN202522063503.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-25
Publication Date
2026-08-25
Estimated Expiration
2035-09-25

AI Technical Summary

Technical Problem

The existing slitting structure of blown plastic film is not convenient for adjusting the blade spacing. When facing different plastic film width requirements, the adjustment is time-consuming and it is not convenient to replace the blunted blades.

Method used

A slitting device for blow molding of mulch film was designed. By setting up a slitting mechanism and a protective mechanism, the cutter is stably installed and easily disassembled by using a threaded sleeve and a connecting button. The cutter position is adjusted by the cooperation of the sliding plate and the T-block, the spacing is precisely adjusted by the scale plate and the triangular indicator block, and synchronous slitting is achieved by driving the drive roller through the reduction motor.

Benefits of technology

It enables quick replacement of the blunted cutter blade, precise adjustment of the cutter spacing, improved slitting efficiency, and provides safety protection during the slitting process, ensuring operational safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a mulch blow molding is with slitting device belongs to mulch slitting technical field, and its technical scheme main points include bottom plate, the top of bottom plate is provided with slitting mechanism, the number of slitting mechanism is several and evenly distributes in the top of bottom plate, the top of slitting mechanism is provided with protection mechanism, the rear side of bottom plate top is provided with drive roll, and the four corners of bottom plate bottom all are fixedly connected with inclined support leg, the slitting mechanism includes cutter, cutter groove, support column, sliding plate and T -shaped piece, the cutter groove is set up in the inside of support column, the cutter is movably inserted in the inside of cutter groove, the bottom of support column is fixedly connected with the top of sliding plate, has solved the slitting structure of part mulch blow molding of existing, is inconvenient to the interval of blade and carries out the adjustment, when facing different mulch width demand, the adjustment of blade is more time -consuming, and it is inconvenient to replace the passivated blade.
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Description

Technical Field

[0001] This utility model relates to the field of mulch film cutting technology, and in particular to a mulch film blow molding cutting device. Background Technology

[0002] Slitting during the blow molding of mulch film is a core process in the mulch film production process that connects blow molding and finished product winding. It involves precisely cutting the continuous and relatively wide sheet mulch film substrate produced by the blow molding equipment into single rolls of mulch film of a specific width according to the downstream agricultural planting or customer customization needs, and simultaneously completing the winding process.

[0003] The existing blow molding and slitting structure of some plastic film makes it inconvenient to adjust the blade spacing. When facing different plastic film width requirements, adjusting the blades is time-consuming and it is not convenient to replace dull blades.

[0004] To address this, a slitting device for blow molding of plastic film is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a slitting device for blow molding of mulch film, which can solve the problems of existing slitting structures for blow molding of mulch film, such as inconvenience in adjusting the spacing of the blades, time-consuming adjustment of the blades when facing different mulch film width requirements, and inconvenience in replacing dulled blades.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a slitting device for blow molding of mulch film, comprising a base plate, a slitting mechanism disposed on the top of the base plate, the number of slitting mechanisms being several and evenly distributed on the top of the base plate, a protective mechanism disposed on the top of the slitting mechanism, a drive roller disposed on the rear side of the top of the base plate, and inclined support legs fixedly connected to the four corners of the bottom of the base plate; the slitting mechanism comprises a cutter, a cutter groove, a support column, a sliding plate, and a T-shaped block, the cutter groove being opened inside the support column, the cutter being movably inserted into the cutter groove, the bottom of the support column being fixedly connected to the top of the sliding plate, and the top of the T-shaped block being fixedly connected to the bottom of the sliding plate.

[0007] Preferably, a threaded sleeve is fixedly connected to the left side of the support column, and a connecting button is provided on the right side of the support column. The left side of the connecting button passes through the cutter and the support column and is connected to the internal thread of the threaded sleeve.

[0008] Preferably, the top of the base plate is provided with a T-shaped groove, the T-shaped block is slidably connected inside the T-shaped groove, a lever is fixedly connected to the front side of the support column, and rubber anti-slip sheets are fixedly connected to both sides of the lever.

[0009] Preferably, the top of the skateboard is provided with a limit button, the bottom of the limit button passes through the skateboard and is in close contact with the top of the base plate, and the limit button is threaded inside the skateboard.

[0010] Preferably, a scale plate is fixedly connected to the top of the base plate, and a scale groove is formed on the top of the scale plate. The scale groove is a plurality of grooves and is evenly distributed on the top of the scale plate. A triangular indicator block that cooperates with the scale groove is fixedly connected to the front side of the slide plate.

[0011] Preferably, the protective mechanism includes a protective cover, two support plates and two limiting frames, the top of the support plates is fixedly connected to the bottom of the protective cover, the limiting frames are fixedly sleeved on the surface of the support plates, and the protective cover is located on top of the cutter.

[0012] Preferably, the base plate is fixedly connected to the two sides of the support frame, the support plate is movably inserted into the inside of the support frame, and the top of the protective cover is fixedly connected to the two sides of the top.

[0013] Preferably, rotating plates are fixedly connected to both sides of the top rear side of the base plate, and the drive roller is rotatably connected between the two rotating plates on opposite sides. A reduction motor is fixedly connected to the left side of the left rotating plate, and the right side of the output shaft of the reduction motor passes through the left rotating plate and is fixedly connected to the surface of the drive roller. The surface of the output shaft of the reduction motor is in movable contact with the interior of the left rotating plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This application features a slitting mechanism where the cutter is movably inserted into the blade groove of the support column. The threaded sleeve on the left side of the support column engages with the threaded connecting button on the right side, enabling stable installation and easy disassembly of the cutter. This allows for quick replacement of the dulled cutter. A T-shaped block at the bottom of the slide plate slides within a T-shaped groove on the base plate. Pushing the lever with a rubber anti-slip pad on the front of the support column allows for easy adjustment of the cutter position. After adjustment, the slide plate is tightly contacted by a limit button on top of the slide plate. The friction between the T-shaped block and the T-shaped groove, and between the limit button and the base plate, secures the slide plate, preventing cutter displacement during slitting. Simultaneously, the scale plate on the base plate engages with a triangular indicator block on the front of the slide plate, allowing for precise adjustment of the cutter spacing to meet the slitting requirements of different widths of mulch film. This solves the problems of time-consuming blade spacing adjustments and inconvenient blade replacement in existing slitting structures. Furthermore, during slitting, a reduction motor drives the drive roller to rotate, and in conjunction with an external winding device, slitting can be completed simultaneously during the mulch film conveying and winding process, ensuring slitting efficiency. 2. This application features a protective mechanism where the top of the support plate is fixed to the protective cover, and a limiting frame is fitted onto the surface. Support frames on both sides of the bottom plate provide insertion positions for the support plate. When in use, the support plate is inserted into the support frame by holding the handle on the top of the protective cover. The limiting frame prevents the support plate from being over-inserted into the support frame, ensuring that the protective cover is precisely positioned at the top of the cutter. This effectively shields the cutter and prevents injury from the cutter, providing safety protection for the mulch film cutting operation. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the slitting device for blow molding of mulch film according to this utility model; Figure 2 This is a three-dimensional connection diagram of the base plate and the rotating plate in this utility model; Figure 3 This is a three-dimensional exploded view of the cutting blade and the blade groove in this utility model; Figure 4 This is a three-dimensional sectional view of the base plate of this utility model; Figure 5 This is a three-dimensional structural diagram of the scale plate in this utility model; Figure 6 This is a three-dimensional structural diagram of the bottom of the protective cover in this utility model.

[0016] In the diagram, 1. Base plate; 2. Cutting mechanism; 201. Cutting blade; 202. Blade groove; 203. Support column; 204. Slide plate; 205. T-block; 3. Protective mechanism; 301. Protective cover; 302. Support plate; 303. Limiting frame; 4. Gear motor; 5. Diagonal support leg; 6. Scale plate; 7. Connecting button; 8. Threaded sleeve; 9. Pulley; 10. Rubber anti-slip sheet; 11. Triangular indicator block; 12. T-slot; 13. Scale groove; 14. Handle; 15. Drive roller; 16. Rotating plate; 17. Support frame; 18. Limiting button. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-6 The present invention provides the following technical solution: A slitting device for blow molding of mulch film includes a base plate 1, a slitting mechanism 2 is provided on the top of the base plate 1, the number of slitting mechanisms 2 is several and evenly distributed on the top of the base plate 1, a protective mechanism 3 is provided on the top of the slitting mechanism 2, a drive roller 15 is provided on the rear side of the top of the base plate 1, and inclined support legs 5 are fixedly connected to the four corners of the bottom of the base plate 1; the slitting mechanism 2 includes a cutter 201, a cutter groove 202, a support column 203, a slide plate 204 and a T-shaped block 205, the cutter groove 202 is opened inside the support column 203, the cutter 201 is movably inserted into the cutter groove 202, the bottom of the support column 203 is fixedly connected to the top of the slide plate 204, and the top of the T-shaped block 205 is fixedly connected to the bottom of the slide plate 204.

[0019] In this embodiment: Based on the base plate 1, the diagonal support legs 5 at the four corners of its bottom provide stable support. The cutter 201 is movably inserted into the blade groove 202 of the support column 203. The cutter 201 is fixed by a connecting button 7 passing through the cutter 201 and the support column 203 and being threadedly connected to the threaded sleeve 8. The cutter 201 can be replaced by unscrewing the connecting button 7. Pushing the lever 9 with the rubber anti-slip plate 10 allows the T-shaped block 205 to move inside the T-shaped groove 12, which can easily and quickly adjust the position of the cutter 201. After adjustment, the limit button 18 on the slide plate 204 is turned to fix it. The scale plate 6 on the base plate 1 has a scale groove 13. The triangular indicator block 11 of the slide plate 204 is aligned with the blade edge of the cutter 201, which facilitates precise adjustment of the spacing of the cutter 201. During slitting, the reduction motor 4 is controlled to operate, and the output shaft of the reduction motor 4 drives the drive roller 15 to rotate, moving the mulch film to the top of the drive roller 15. It rotates at the same speed as the external mulch film winding equipment, and contacts the cutter 201 when the mulch film is conveyed and wound, thus completing the slitting. The protective support plate 302 is inserted into the support frame 17 by holding the handle 14. The limit frame 303 prevents the support plate 302 from being over-inserted into the support frame 17. The protective cover 301 covers the cutter 201 to prevent the cutter 201 from injuring people. This solves the problem that some existing mulch film blow molding slitting structures are inconvenient to adjust the blade spacing, and that adjusting the blades is time-consuming when facing different mulch film width requirements, and it is also inconvenient to replace dull blades.

[0020] Specifically, such as Figure 3 As shown, a threaded sleeve 8 is fixedly connected to the left side of the support column 203, and a connecting button 7 is provided on the right side of the support column 203. The left side of the connecting button 7 passes through the cutter 201 and the support column 203 and is connected to the internal thread of the threaded sleeve 8.

[0021] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, a T-shaped groove 12 is provided on the top of the base plate 1, and a T-shaped block 205 is slidably connected inside the T-shaped groove 12. A lever 9 is fixedly connected to the front side of the support column 203, and rubber anti-slip sheets 10 are fixedly connected to both sides of the lever 9.

[0022] Specifically, such as Figure 3 As shown, a limit button 18 is provided on the top of the slide plate 204. The bottom of the limit button 18 passes through the slide plate 204 and is in close contact with the top of the base plate 1. The limit button 18 is threadedly connected inside the slide plate 204.

[0023] Specifically, such as Figure 1 , Figure 3 and Figure 5 As shown, a scale plate 6 is fixedly connected to the top of the base plate 1. A scale groove 13 is provided on the top of the scale plate 6. There are several scale grooves 13 and they are evenly distributed on the top of the scale plate 6. A triangular indicator block 11 that works with the scale groove 13 is fixedly connected to the front side of the slide plate 204.

[0024] In this embodiment: the threaded sleeve 8 and the connecting button 7 cooperate to achieve stable installation and convenient disassembly of the cutter 201. The T-shaped block 205 slides in the T-shaped groove 12 and cooperates with the lever block 9 with rubber anti-slip plate 10 to easily adjust the position of the cutter 201. The limit button 18 can effectively fix the slide plate 204 through friction to prevent the cutter 201 from shifting during cutting. The scale groove 13 of the scale plate 6 cooperates with the triangular indicator block 11 to accurately adjust the spacing of the cutter 201 to meet the cutting needs of different widths of mulch film.

[0025] Specifically, such as Figure 6 As shown, the protective mechanism 3 includes a protective cover 301, two support plates 302 and two limiting frames 303. The top of the support plate 302 is fixedly connected to the bottom of the protective cover 301, and the limiting frames 303 are fixedly sleeved on the surface of the support plate 302. The protective cover 301 is located on the top of the cutter 201.

[0026] Specifically, such as Figure 1 , Figure 2 and Figure 6 As shown, support frames 17 are fixedly connected to both sides of the base plate 1, and the support plate 302 is movably inserted into the inside of the support frame 17. Handles 14 are fixedly connected to both sides of the top of the protective cover 301.

[0027] Specifically, such as Figure 2 As shown, rotating plates 16 are fixedly connected to both sides of the top rear side of the base plate 1. The drive roller 15 is rotatably connected between the two rotating plates 16 on opposite sides. A reduction motor 4 is fixedly connected to the left side of the left rotating plate 16. The right side of the output shaft of the reduction motor 4 passes through the left rotating plate 16 and is fixedly connected to the surface of the drive roller 15. The surface of the output shaft of the reduction motor 4 is in active contact with the interior of the left rotating plate 16.

[0028] In this embodiment: the protective cover 301 in the protective mechanism 3 is positioned by inserting the support plate 302 into the support frame 17, the limiting frame 303 prevents excessive insertion, the handle 14 facilitates operation, the protective cover 301 can effectively block the cutter 201 to ensure safety, the drive roller 15 rotatably connected between the two rotating plates 16 on opposite sides is linked with the reduction motor 4 to provide stable power for the conveying of the mulch film and ensure that the cutting process is smooth and efficient.

[0029] Working principle: The base plate 1 provides a stable foundation for the base plate 1, with diagonal bracing legs 5 fixedly connected to its four corners. A cutter 201 is movably inserted into a blade groove 202. A connecting button 7, passing through the cutter 201 and support column 203 from the left side and threaded into the threaded sleeve 8, secures the cutter 201 within the blade groove 202, preventing it from loosening during cutting. For disassembly, unscrew the connecting button 7 to disengage the limit button 18 from the threaded sleeve 8, allowing the cutter 201 to be removed and replaced. The bottom of the support column 203 is fixedly connected to the top of the slide plate 204, and the bottom of the slide plate 204 is fixed to the top of the T-block 205. A T-slot 12 is provided on the top of the base plate 1, through which the T-block 205 is slidably connected. Inside the T-slot 12, by pushing the lever 9 fixedly connected to the front of the support column 203, the rubber anti-slip plates 10 on both sides of the lever 9 increase the friction between the hand and the lever 9, making it easier to apply force. This causes the T-block 205 to slide within the T-slot 12, thus adjusting the position of the cutter 201. This is convenient, quick, and saves time and effort. After adjusting the position of the cutter 201, the limiting button 18 set on the top of the slide plate 204 is used. The limiting button 18 is threaded into the inside of the slide plate 204. Its bottom passes through the slide plate 204 and makes tight contact with the top of the base plate 1, increasing the friction between the T-block 205 and the T-slot 12. This fixes the slide plate 204 and prevents the cutter 201 from shifting during cutting. At the same time, a scale plate 6 is fixedly connected to the top of the base plate 1. The top of the plate 6 has several evenly distributed scale grooves 13. A triangular indicator block 11 that mates with the scale grooves 13 is fixedly connected to the front side of the slide plate 204. The blade edge of the cutter 201 and the tip of the triangular indicator block 11 are located at the same position. When adjusting the position of the cutter 201, the spacing of the cutter 201 can be accurately determined by aligning the triangular indicator block 11 with different scale grooves 13. This allows for easy adjustment of the cutter 201 spacing to cut mulch film of different widths as needed. When mulch film cutting is required, the geared motor 4 is controlled to rotate at the same speed as the external mulch film winding equipment. The geared motor 4 drives the drive roller 15 to rotate. Combined with the tension of the external winding equipment, the cutter 201 cuts the mulch film while it is being conveyed and wound. During the slitting process, to ensure safety, the handles 14 fixedly connected to the top two sides of the protective cover 301 are held by hand, and the support plate 302 is movably inserted into the support frame 17. The limiting frame 303 can prevent the support plate 302 from being over-inserted, so that the protective cover 301 is limited to the top of the cutter 201, avoiding injury from the cutter 201. This solves the problem that some existing plastic film blow molding slitting structures are inconvenient to adjust the blade spacing, and when facing different plastic film width requirements, adjusting the blade is time-consuming and it is not convenient to replace the dull blade. It should be noted that the geared motor 4 and the external plastic film winding equipment are both existing mature technologies that have been published, and they are powered by an external power supply and controlled by an external controller. Their basic mechanism will not be elaborated here.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slitting device for blow molding of mulch film, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a cutting mechanism (2), and the number of cutting mechanisms (2) is several and evenly distributed on the top of the base plate (1). The top of the cutting mechanism (2) is provided with a protective mechanism (3). The rear side of the top of the base plate (1) is provided with a drive roller (15). The four corners of the bottom of the base plate (1) are fixedly connected with inclined support legs (5). The cutting mechanism (2) includes a cutter (201), a cutter groove (202), a support column (203), a slide plate (204), and a T-shaped block (205). The cutter groove (202) is opened inside the support column (203). The cutter (201) is movably inserted into the cutter groove (202). The bottom of the support column (203) is fixedly connected to the top of the slide plate (204). The top of the T-shaped block (205) is fixedly connected to the bottom of the slide plate (204).

2. The slitting device for blow molding of mulch film according to claim 1, characterized in that: A threaded sleeve (8) is fixedly connected to the left side of the support column (203), and a connecting button (7) is provided on the right side of the support column (203). The left side of the connecting button (7) passes through the cutter (201) and the support column (203) and is connected to the internal thread of the threaded sleeve (8).

3. The slitting device for blow molding of mulch film according to claim 1, characterized in that: The top of the base plate (1) is provided with a T-shaped groove (12), the T-shaped block (205) is slidably connected inside the T-shaped groove (12), the front side of the support column (203) is fixedly connected with a lever (9), and rubber anti-slip sheets (10) are fixedly connected on both sides of the lever (9).

4. The slitting device for blow molding of mulch film according to claim 1, characterized in that: The top of the slide plate (204) is provided with a limit button (18), the bottom of the limit button (18) passes through the slide plate (204) and is in close contact with the top of the base plate (1), and the limit button (18) is threaded inside the slide plate (204).

5. The slitting device for blow molding of mulch film according to claim 1, characterized in that: A scale plate (6) is fixedly connected to the top of the base plate (1). A scale groove (13) is provided on the top of the scale plate (6). There are several scale grooves (13) and they are evenly distributed on the top of the scale plate (6). A triangular indicator block (11) that works with the scale groove (13) is fixedly connected to the front side of the slide plate (204).

6. The slitting device for blow molding of mulch film according to claim 1, characterized in that: The protective mechanism (3) includes a protective cover (301), two support plates (302) and two limiting frames (303). The top of the support plate (302) is fixedly connected to the bottom of the protective cover (301), and the limiting frame (303) is fixedly sleeved on the surface of the support plate (302). The protective cover (301) is located on the top of the cutter (201).

7. A slitting device for blow molding of mulch film according to claim 6, characterized in that: The base plate (1) is fixedly connected to the two sides of the support frame (17), the support plate (302) is movably inserted into the inside of the support frame (17), and the protective cover (301) is fixedly connected to the two sides of the top. Handles (14) are fixedly connected to both sides.

8. A slitting device for blow molding of mulch film according to claim 1, characterized in that: The bottom plate (1) has two rotating plates (16) fixedly connected to the top rear side on both sides. The drive roller (15) is rotatably connected between the two rotating plates (16) on opposite sides. The left side of the left rotating plate (16) is fixedly connected to a reduction motor (4). The right side of the output shaft of the reduction motor (4) passes through the left rotating plate (16) and is fixedly connected to the surface of the drive roller (15). The surface of the output shaft of the reduction motor (4) is in active contact with the interior of the left rotating plate (16).