A slitting device for producing degradable plastic packaging bags

Abstract

The utility model relates to a kind of slitting device for degradable plastic packaging bag production, belong to packaging bag production equipment technical field.Mainly including rack, slitting mechanism, transmission assembly, conveying mechanism and support column, linkage through transmission assembly, the synchronous operation of slitting mechanism and conveying mechanism is realized, it is avoided that film tensile deformation or cutting position deviation is combined with compaction and cutting integrated design, further improve the film conveying stability by strip conveyor belt and idler cooperation use.The utility model can effectively solve the quality problem caused by speed mismatch of traditional slitting device, significantly improve slitting precision and the production qualified rate of packaging bag, meet the production demand of high-quality degradable plastic packaging bag.

Description

Technical Field

[0001] This utility model belongs to the technical field of packaging bag production equipment, specifically relating to a cutting device for the production of biodegradable plastic packaging bags. Background Technology

[0002] In the production of biodegradable plastic packaging bags, the slitting process is a key step to ensure product specification accuracy and quality stability.

[0003] However, most existing slitting devices employ a split-drive design, with the slitting mechanism and conveying mechanism driven by independent motors. This not only increases equipment costs but also makes synchronous control difficult, easily leading to speed mismatch issues. Speed ​​deviations can cause film stretching deformation or cutting position misalignment, thus affecting slitting accuracy and reducing the production yield of packaging bags. Therefore, there is an urgent need for a device that can achieve linked control of slitting and conveying to improve slitting accuracy and production efficiency, meeting the market demand for high-quality biodegradable plastic packaging bags. Utility Model Content

[0004] To overcome the problems of low synchronization accuracy and film stretching deformation or cutting position deviation caused by speed mismatch in existing slitting devices with a split drive design, this utility model provides a slitting device for the production of biodegradable plastic packaging bags. Through the linkage of the transmission components, the slitting mechanism and the conveying mechanism are synchronized. Combined with the integrated design of pressing and cutting, the film quality problems caused by speed deviation are effectively avoided, and the slitting accuracy and the production qualification rate of packaging bags are significantly improved. In addition, the stability of the film during the slitting process is further enhanced by the use of the conveying mechanism and idler rollers, ensuring that the slitting process is efficient and reliable.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A slitting device for the production of biodegradable plastic packaging bags mainly includes a frame, a slitting mechanism, a transmission component, a conveying mechanism, and support columns. The frame is an integral frame structure. The slitting mechanism is installed at the front end of the frame, and the support columns are symmetrically installed on both sides of the rear end of the frame. A U-shaped groove matching the diameter of the roll is opened on the top of the support columns. A conveying mechanism for conveying the film from the roll to the slitting mechanism is installed on the frame, and a transmission component for driving the slitting mechanism and the conveying mechanism to work together is installed on the side of the frame.

[0006] The slitting mechanism includes a base, guide rods, connecting plates, sliders, pressure plates, cutter holders, and cutters. The cutter holders are fixedly mounted on the front end of the frame by bolts. A cutter with its blade facing upwards is vertically mounted on the top surface of the cutter holders. Bases are symmetrically mounted on both sides of the cutter. Guide rods are provided on the bases. A connecting plate is fixedly connected between the top ends of the guide rods by bolts. Sliders are slidably mounted on the guide rods. Pressure plates are connected between the sliders by bolts. The pressure plates are located directly above the cutter holders, and a blade groove adapted to the cutter is opened at their bottom end.

[0007] The transmission assembly includes a motor, a drive shaft, a first gear, a second gear, an incomplete gear, a first connecting column, a connecting rod, and a connecting shaft. The drive shaft is mounted on the bottom of the frame via a bearing seat, and its ends extend to both sides of the frame and are fixed to the first gear via a key connection. The first connecting column is welded to the end face of the first gear at a position away from the center. The bottom end of the connecting rod is rotatably connected to the first connecting column via a pin, and its top end is rotatably connected to the second connecting column on the side of the slider via a pin. One end of the connecting shaft is mounted on the side of the frame via a bearing seat, and the other end is fixed to the second gear and the incomplete gear via a key connection. The second gear meshes with the first gear, and the incomplete gear is driven by the conveying mechanism. The motor is mounted on the frame via bolts, and its output shaft is driven by the end of the drive shaft via a chain transmission mechanism.

[0008] The conveying mechanism includes a support base, an upper roller, a lower roller, a strip conveyor belt, and a third gear. The support base is symmetrically installed on both sides of the frame. Both ends of the upper and lower rollers are mounted on the support base via bearings. Annular grooves are equidistantly opened on the circumferential surfaces of the upper and lower rollers. Strip conveyor belts are wound between the upper rollers and between the lower rollers, respectively. The strip conveyor belts are equidistantly distributed along the axial direction of the upper and lower rollers and embedded in the annular grooves. The ends of the upper and lower rollers near the slitting mechanism are both connected and fixed with meshing third gears via keys. One of the third gears meshes with an incomplete gear.

[0009] The frame is equipped with a freely rotating idler roller, which is located at the rear end of the cutter holder.

[0010] The beneficial effects of this utility model are:

[0011] This invention solves the problem of speed mismatch between the slitting mechanism and the conveying mechanism through the linkage design of the transmission components. At the same time, through the integrated design of pressing and cutting and the optimized conveyor belt structure, it significantly improves the slitting accuracy and production efficiency, meeting the market demand for high-quality biodegradable plastic packaging bags. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2This is the isometric drawing of this utility model.

[0014] Figure 3 This is a top view of the utility model.

[0015] Figure 4 yes Figure 1 A magnified view of a portion of point A in the middle.

[0016] Figure 5 yes Figure 2 A magnified view of a section at point B in the middle.

[0017] Figure 6 yes Figure 3 A magnified view of a section at point C.

[0018] The attached figures are labeled as follows:

[0019] 1. Frame; 2. Slitting mechanism; 21. Base; 22. Guide rod; 23. Connecting plate; 24. Slider; 25. Pressure plate; 26. Cutter holder; 27. Cutter; 28. Second connecting column; 3. Transmission assembly; 31. Motor; 32. Drive shaft; 33. First gear; 34. Second gear; 35. Incomplete gear; 36. First connecting column; 37. Connecting rod; 38. Connecting shaft; 4. Conveying mechanism; 41. Support seat; 42. Upper roller; 43. Lower roller; 44. Strip conveyor belt; 45. Third gear; 5. Support column; 6. Idler roller. Detailed Implementation

[0020] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0021] This utility model discloses a slitting device for producing biodegradable plastic packaging bags. The slitting device mainly includes a frame 1, a slitting mechanism 2, a transmission assembly 3, a conveying mechanism 4, and a support column 5. The specific installation positions of each component and their interrelationships are described below. Figure 1 As shown, frame 1 is an integral frame structure used to fix and support other functional components. The slitting mechanism 2 is located at the front end of frame 1 and is used to complete the film slitting operation. Support columns 5 are symmetrically installed on both sides of the rear end of frame 1, with U-shaped grooves on the top matching the diameter of the roll rollers for placing and supporting the roll rollers. The conveying mechanism 4 is installed on frame 1, located between the support columns 5 and the slitting mechanism 2, and is used to smoothly convey the film from the roll rollers to the slitting mechanism 2. The transmission assembly 3 is installed on frame 1 and is used to drive the slitting mechanism 2 and the conveying mechanism 4 to operate synchronously. In addition, the idler roller 6 is installed on frame 1 via a bearing seat, located at the rear end of the cutter seat 26, thereby providing auxiliary support for the slitting film segments.

[0022] The specific structure of the slitting mechanism 2 is as follows: Figure 2 , Figure 4 and Figure 5 As shown, the machine includes a base 21, a guide rod 22, a connecting plate 23, a slider 24, a pressure plate 25, a cutter holder 26, and a cutter 27. The cutter holder 26 is fixedly installed at the front end of the frame 1 by bolts. A cutter 27 with its blade facing upwards is vertically installed on its top surface. The base 21 is symmetrically installed on both sides of the cutter 27. A guide rod 22 is provided on the base 21. The top of the guide rod 22 is fixedly connected to the connecting plate 23 by bolts. A slider 24 is slidably installed on the guide rod 22. A pressure plate 25 is bolted between the sliders 24. The pressure plate 25 is located directly above the cutter holder 26. Its bottom end has a groove adapted to the cutter 27 for pressing the film during the slitting process. When the slider 24 moves up and down along the guide rod 22, it drives the pressure plate 25 to achieve pressing and slitting actions. The sliding cooperation between the guide rod 22 and the slider 24 ensures the linear motion trajectory of the pressure plate 25 and guarantees the slitting accuracy.

[0023] The specific structure of transmission component 3 is as follows: Figure 4 , Figure 5 and Figure 6 As shown, the assembly includes a motor 31, a drive shaft 32, a first gear 33, a second gear 34, an incomplete gear 35, a first connecting post 36, a connecting rod 37, and a connecting shaft 38. The drive shaft 32 is mounted on the bottom of the frame 1 via a bearing seat, and its ends extend to both sides of the frame 1 and are fixed to the first gear 33 via a key connection. The first connecting post 36 is welded to the end face of the first gear 33 at a position away from the center. The bottom end of the connecting rod 37 is rotatably connected to the first connecting post 36 via a pin, and the top end is rotatably connected to the second connecting post 28 on the side of the slider 24 via a pin. When the drive shaft 32 rotates, the first gear 33 rotates accordingly, and the rotational motion is converted into the up-and-down linear motion of the slider 24 via the connecting rod 37, thereby driving the pressure plate 25 to complete the pressing and cutting actions. One end of the connecting shaft 38 is mounted on the side of the frame 1 via a bearing housing, and the other end is fixed with a second gear 34 and an incomplete gear 35 via a key connection. The second gear 34 meshes with the first gear 33, and the incomplete gear 35 meshes with the third gear 45 in the conveying mechanism 4, thereby realizing the linkage operation of the slitting mechanism 2 and the conveying mechanism 4. The motor 31 is mounted on the frame 1 by bolts, and its output shaft is connected to the end of the transmission shaft 32 via a chain drive mechanism, providing a power source for the entire device.

[0024] The specific structure of the conveying mechanism 4 is as follows: Figure 2 , Figure 3As shown, the system includes a support base 41, an upper roller 42, a lower roller 43, a strip conveyor belt 44, and a third gear 45. The support base 41 is symmetrically mounted on both sides of the frame 1. Both ends of the upper roller 42 and the lower roller 43 are mounted on the support base 41 via bearings. Annular grooves are equidistantly spaced on the circumferential surfaces of the upper roller 42 and the lower roller 43. Strip conveyor belts 44 are wound between the upper roller 42 and between the lower roller 43, respectively. The strip conveyor belts 44 are equidistantly distributed along the axial direction of the upper roller 42 and the lower roller 43 and are embedded in the annular grooves, effectively preventing belt deviation and ensuring the stability of the film during transport. The ends of the upper roller 42 and the lower roller 43 near the slitting mechanism 2 are fixed with meshing third gears 45 via keys. One of the third gears 45 meshes with an incomplete gear 35. The rotation of the incomplete gear 35 is transmitted to the upper roller 42 and the lower roller 43 through the third gear 45, thereby driving the strip conveyor belt 44 to run and achieving stable film transport.

[0025] The idler roller 6 is mounted on the frame 1 via a bearing seat and is located at the rear end of the cutter seat 26, ensuring that its position is stable and it can rotate freely. The idler roller 6 can provide auxiliary support for the film in the slit segment, preventing it from wrinkling or deforming due to gravity, thereby improving the slit quality.

[0026] To enable those skilled in the art to fully understand and implement this utility model, the specific implementation principle of this utility model is further explained below in conjunction with a specific application scenario.

[0027] First, the film roll to be slit is placed in the U-shaped groove at the top of the support column 5. The U-shaped groove of the support column 5 is designed to match the diameter of the roll, ensuring stable placement of the roll and preventing deviation during operation. Then, one end of the film is pulled from the roll, passes through the strip conveyor belt 44 in the conveying mechanism 4, and extends to the cutter seat 26 of the slitting mechanism 2. During this process, the strip conveyor belt 44 is embedded in the annular grooves on the surfaces of the upper roller 42 and the lower roller 43, effectively preventing belt deviation during operation and ensuring the stability of the film during transport.

[0028] After the motor 31 is started, the motor 31 drives the transmission shaft 32 to rotate through the chain transmission mechanism. The rotation of the transmission shaft 32 drives the first gear 33 to rotate synchronously. The first gear 33 pushes the connecting rod 37 to move through the first connecting post 36 welded to its end face. The bottom end of the connecting rod 37 is connected to the first connecting post 36 by a pin, and the top end is connected to the second connecting post 28 on the side of the slider 24. Therefore, the rotational motion of the first gear 33 is converted into the vertical linear motion of the slider 24 along the guide rod 22 through the connecting rod 37. The vertical motion of the slider 24 drives the pressure plate 25 to complete the pressing and cutting action. The knife groove opened at the bottom end of the pressure plate 25 is adapted to the cutting edge of the cutter 27. When the pressure plate 25 is pressed down, it can fit tightly against the cutter 27, thereby achieving precise cutting of the film.

[0029] Meanwhile, the first gear 33 drives the second gear 34 to rotate. The second gear 34 is fixed to the connecting shaft 38 by a key connection. An incomplete gear 35 is installed on the connecting shaft 38. The incomplete gear 35 meshes with the third gear 45 in the conveying mechanism 4, thereby transmitting power to the upper roller 42 and the lower roller 43. The upper roller 42 and the lower roller 43 clamp the film through the strip conveyor belt 44 and smoothly convey it to the slitting mechanism 2. Due to the design characteristics of the incomplete gear 35, there is intermittent drive during its rotation, so that the running speed of the conveying mechanism 4 is consistent with the operating frequency of the slitting mechanism 2, thereby avoiding the problem of film stretching deformation or cutting position offset caused by speed mismatch in the traditional split drive design.

[0030] In the above steps, the linkage design of the transmission components realizes the synchronous operation of the slitting mechanism 2 and the conveying mechanism 4. Specifically, the motor 31 serves as the power source, driving the transmission shaft 32 to rotate through the chain transmission mechanism. The transmission shaft 32 drives the first gear 33 to rotate. The first gear 33 converts the rotational motion into the up-and-down linear motion of the slider 24 through the connecting rod 37. On the other hand, it drives the second gear 34 to rotate through meshing, further driving the incomplete gear 35 to rotate. The incomplete gear 35 meshes with the third gear 45, thereby realizing the linkage control of the conveying mechanism 4, which significantly improves the slitting accuracy and production efficiency. In addition, the cooperation between the conveying mechanism and the idler roller 6 further enhances the stability of the film during the slitting process. The strip conveyor belt 44 is embedded in the annular grooves on the surface of the upper roller 42 and the lower roller 43, which can effectively prevent the conveyor belt from running off-track and ensure the accuracy of the film conveying path. The idler roller 6 prevents the film in the slitting section from wrinkling or deforming due to gravity, thereby improving the slitting quality.

[0031] In summary, this utility model solves the problem of speed mismatch between the slitting mechanism and the conveying mechanism through the linkage design of the transmission components. At the same time, through the integrated design of pressing and cutting and the optimized conveyor belt structure, it significantly improves the slitting accuracy and production efficiency, meeting the market demand for high-quality biodegradable plastic packaging bags.

[0032] Work process:

[0033] During operation, the film roll to be cut is first placed in the U-shaped groove at the top of the support column 5. One end of the film passes through the conveying mechanism 4 and extends to the cutting mechanism 2. After starting the motor 31, the motor 31 drives the transmission shaft 32 to rotate through the chain transmission mechanism. The transmission shaft 32 drives the first gear 33 to rotate. The first gear 33 converts the rotational motion into the up-and-down linear motion of the slider 24 through the connecting rod 37. The slider 24 drives the pressure plate 25 to move up and down, completing the pressing and cutting of the film. At the same time, the first gear 33 drives the second gear 34 to rotate through meshing, which further drives the incomplete gear 35 to rotate. The incomplete gear 35 meshes with the third gear 45, thereby driving the conveying mechanism 4 to run. The upper roller 42 and lower roller 43 in the conveying mechanism 4 clamp the film through the strip conveyor belt 44 and smoothly convey it to the cutting mechanism 2 for cutting. At the same time, the idler roller 6 provides auxiliary support for the cutting section to avoid wrinkles or deformation due to gravity. This invention enables the synchronous operation of the slitting mechanism 2 and the conveying mechanism 4, solving the speed mismatch problem caused by the traditional split drive design. At the same time, the cooperation between the conveying mechanism and the idler roller 6 enhances the stability of the film during the slitting process, significantly improving slitting accuracy and production efficiency.

[0034] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A slitting device for producing biodegradable plastic packaging bags, characterized in that: The aforementioned slitting device for producing biodegradable plastic packaging bags includes a frame (1), a slitting mechanism (2), a transmission component (3), a conveying mechanism (4), and a support column (5). The frame (1) is an integral frame structure. The slitting mechanism (2) is installed at the front end of the frame (1). The support column (5) is symmetrically installed on both sides of the rear end of the frame (1). A U-shaped groove matching the diameter of the roll is opened on the top of the support column (5). A conveying mechanism (4) for conveying the film from the roll to the slitting mechanism (2) is installed on the frame (1). A transmission component for driving the slitting mechanism (2) and the conveying mechanism (4) to work together is installed on the side of the frame.

2. The slitting device for producing biodegradable plastic packaging bags as described in claim 1, characterized in that: The slitting mechanism (2) includes a base (21), a guide rod (22), a connecting plate (23), a slider (24), a pressure plate (25), a cutter seat (26), and a cutter (27). The cutter seat (26) is fixedly installed at the front end of the frame (1) by bolts. A cutter (27) with its blade facing upward is vertically installed on the top surface of the cutter seat (26). The base (21) is symmetrically installed on both sides of the cutter (27). A guide rod (22) is provided on the base (21). A connecting plate (23) is fixedly connected between the top ends of the guide rods (22) by bolts. A slider (24) is slidably installed on the guide rods (22). A pressure plate (25) is connected between the sliders (24) by bolts. The pressure plate (25) is located directly above the cutter seat (26), and a blade groove adapted to the cutter (27) is opened at its bottom end.

3. The slitting device for producing biodegradable plastic packaging bags as described in claim 2, characterized in that: The transmission assembly (3) includes a motor (31), a transmission shaft (32), a first gear (33), a second gear (34), an incomplete gear (35), a first connecting post (36), a connecting rod (37), and a connecting shaft (38). The transmission shaft (32) is mounted on the bottom of the frame (1) via a bearing seat, and its end extends to both sides of the frame (1) and is fixed to the first gear (33) via a key connection. The first connecting post (36) is welded to the end face of the first gear (33) at a position away from the center. The bottom end of the connecting rod (37) is rotatably connected to the first connecting post (38) via a pin. On the column (36), the top end is rotatably connected to the second connecting column (28) on the side of the slider (24) via a pin. One end of the connecting shaft (38) is mounted on the side of the frame (1) via a bearing seat, and the other end is fixed with a second gear (34) and an incomplete gear (35) via a key connection. The second gear (34) meshes with the first gear (33), and the incomplete gear (35) is connected to the conveying mechanism (4) via transmission. The motor (31) is mounted on the frame (1) via bolts, and its output shaft is connected to the end of the transmission shaft (32) via a chain transmission mechanism.

4. The slitting device for producing biodegradable plastic packaging bags as described in claim 3, characterized in that: The conveying mechanism (4) includes a support base (41), an upper roller (42), a lower roller (43), a strip conveyor belt (44), and a third gear (45). The support base (41) is symmetrically installed on both sides of the frame (1). The two ends of the upper roller (42) and the lower roller (43) are mounted on the support base (41) through bearings. The circumferential surfaces of the upper roller (42) and the lower roller (43) are provided with annular grooves at equal intervals. The strip conveyor belts (44) are wound between the upper roller (42) and between the lower roller (43). The strip conveyor belts (44) are distributed at equal intervals along the axial direction of the upper roller (42) and the lower roller (43) and are embedded in the annular grooves. The ends of the upper roller (42) and the lower roller (43) near the cutting mechanism (2) are fixed with mutually meshing third gears (45) by key connection. One of the third gears (45) meshes with an incomplete gear (35).

5. A slitting device for producing biodegradable plastic packaging bags as described in claim 1 or 4, characterized in that: The frame is equipped with a freely rotatable idler roller (6), which is located at the rear end of the cutter seat.

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