Forming device for producing degradable environment-friendly plastic bags

Abstract

This utility model relates to the field of plastic bag production technology, and in particular to a forming device for producing biodegradable and environmentally friendly plastic bags. It includes a traction machine with extension arms fixed to both sides of its front end. Each extension arm is equipped with a cleaning mechanism for removing dust and debris adhering to the surface of the plastic bag during production. The cleaning mechanism includes an adjustment component with bearing seats fixed to the top and bottom ends of the extension arms. Support rods are rotatably mounted inside the bearing seats. Mounting frames are pivotally connected between the two mounting frames, with guide grooves at the front end of the mounting frames. A driving component is provided on the extension arms to drive the mounting frames. A parallelogram mechanism ensures horizontal movement of the suction component, enabling simultaneous cleaning on both sides, achieving efficient dust removal without affecting production. The passive rotating roller design simplifies the structure, and the porous, uniform adsorption avoids scratching the film, making it particularly suitable for the production needs of environmentally friendly bags.

Description

Technical Field

[0001] This utility model relates to the field of plastic bag production technology, specifically a molding device for producing biodegradable and environmentally friendly plastic bags. Background Technology

[0002] Biodegradable and environmentally friendly plastic bags are gaining increasingly widespread use as an alternative to traditional plastic products. These bags are typically made from bio-based or biodegradable materials such as polylactic acid (PLA) and polybutylene adipate / terephthalate (PBAT), and have excellent environmentally friendly properties.

[0003] According to CN219294782U, a seamless plastic bag forming device is disclosed. This technology discloses a "seamless plastic bag forming device, including a device platform, a forming plate, a device body, a heat sealing component, and a slitting knife. The forming plate is fixed to the top of the device platform, the device body is fixed to the top of the device platform outside the forming plate, the heat sealing component is fixed to the output end of the first telescopic drive component, the slitting knife is fixed to the output end of the third telescopic drive component, guide rails are fixed to the top of the device platform on both sides of the storage tank, and a lead screw is rotatably installed inside the guide rails. A movable crossbeam is set between the guide rails, and a lower clamping plate is fixed to the outer wall of one side of the movable crossbeam, and an upper clamping plate is fixed to the outer wall of the movable crossbeam above the lower clamping plate." This technology has the following technical effects: "automatic material picking and stacking functions are realized, the forming process is smooth and continuous, static electricity is not easily generated, the smoothness of forming processing is improved, and the movement of seamless plastic bags is continuous, bag jamming is not easy, and the processing efficiency is improved."

[0004] In the existing production process of biodegradable and environmentally friendly plastic bags, due to the characteristics of the biodegradable materials themselves, dust and debris are easily attached to the film surface during the production and molding stage. These impurities not only affect the appearance quality of the product, but also reduce the physical properties and service life of the film. Traditional production equipment lacks an effective online cleaning system, making it difficult to thoroughly clean the surface of the plastic bags without interrupting the production process, resulting in surface contamination problems in the final product. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a forming device for the production of biodegradable and environmentally friendly plastic bags. The parallelogram mechanism ensures the horizontal movement of the dust collection components, enabling simultaneous cleaning on both the top and bottom sides, achieving efficient dust removal without affecting production. The passive rotating roller design simplifies the structure, and the porous and uniform adsorption avoids scratching the film, making it particularly suitable for the production needs of environmentally friendly bags.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a forming device for producing biodegradable and environmentally friendly plastic bags, comprising a traction machine, with extension arms fixed on both sides of the front end of the traction machine. The extension arms are equipped with a cleaning mechanism for removing dust and debris adhering to the surface of the plastic bags during the production process. The cleaning mechanism includes:

[0007] The adjustment assembly includes bearing seats fixed at both ends of the top and bottom of the extension arm, with a support rod rotatably mounted on the inner end of the bearing seat, and a mounting bracket pivotally connected between the two mounting brackets. A guide groove is provided at the front end of the mounting bracket, and a drive component is provided on the extension arm to drive the movement of the mounting bracket.

[0008] The execution component includes a suction part disposed on the adjustment component for adsorbing impurities on the surface of the plastic bag, and the suction part is provided with a tubing assembly for connecting multiple suction parts.

[0009] Preferably, the driving component includes a mounting base fixed to the inner wall of the extension arm, a cylinder mounted on the mounting base, a bracket fixed to the output end of the cylinder, and cams rotatably mounted on both ends of the inner wall of the bracket, with the cams located inside the guide groove.

[0010] Preferably, the dust collection component includes several rollers rotatably mounted between two mounting brackets at both ends, and several dust collection holes are circumferentially distributed on the rollers.

[0011] Preferably, the piping assembly includes a bent pipe rotatably mounted at one end of the upper roller and a tee pipe rotatably mounted at one end of the lower roller.

[0012] Preferably, the piping assembly further includes a flexible hose fixed between the lower end of the bend and the upper end of the tee.

[0013] Preferably, the piping assembly further includes a multi-port pipe fixed between the lower ends of several tee pipes, and the lower end of the multi-port pipe is connected to a connector.

[0014] Beneficial effects

[0015] This invention provides a molding device for producing biodegradable and environmentally friendly plastic bags. Compared with the prior art, it has the following advantages:

[0016] 1. Through the rotating connection of the bearing and the support rod, combined with the guide groove and cam drive inside the mounting frame, and the support rod of the parallelogram mechanism, the dust collection components on the mounting frame are ensured to maintain a horizontal posture during movement; the upper and lower dust collection components can simultaneously and closely adhere to both sides of the plastic bag, achieving efficient dust removal through continuous contact; the entire cleaning system maintains stable operation during the continuous production of plastic bags, without affecting the normal traction of the film, and can effectively remove debris and dust generated during the production process.

[0017] 2. The rollers achieve passive rotation through direct contact with the surface of the moving plastic bag, enabling continuous dust collection without additional power. This simplifies the equipment structure and reduces energy consumption. The circumferentially distributed suction holes create a uniform negative pressure adsorption area during roller rotation, ensuring that impurities on the plastic bag surface are thoroughly removed. The parallel arrangement of multiple rollers expands the effective cleaning area and significantly improves dust removal efficiency. The passive rotation design avoids scratches on the film surface that may be caused by traditional fixed dust collection devices, making it suitable for the production of products such as biodegradable and environmentally friendly plastic bags that require high surface integrity. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the cleaning mechanism in this utility model;

[0020] Figure 3 This is a schematic diagram of the adjustment component in this utility model;

[0021] Figure 4 This is a schematic diagram of the drive component in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the execution component in this utility model.

[0023] In the diagram: 1. Traction machine; 2. Extension arm; 3. Cleaning mechanism; 31. Adjustment component; 311. Shaft seat; 312. Support rod; 313. Mounting bracket; 314. Guide groove; 315. Drive component; 3151. Mounting seat; 3152. Cylinder; 3153. Bracket; 3154. Cam; 32. Actuation component; 321. Dust collection component; 3211. Roller; 3212. Dust collection hole; 322. Piping assembly; 3221. Bend; 3222. T-joint; 3223. Hose; 3224. Multi-port pipe; 3225. Connector. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0025] Please see Figure 1 - Figure 5This utility model provides a technical solution: a forming device for producing biodegradable and environmentally friendly plastic bags, including a traction machine 1, with extension arms 2 fixed on both sides of the front end of the traction machine 1. A cleaning mechanism 3 is provided on the extension arms 2 for removing dust and debris adhering to the surface of the plastic bags during the production process. The cleaning mechanism 3 includes:

[0026] The adjustment assembly 31 includes a bearing 311 fixed at both ends of the top and bottom of the extension arm 2. A support rod 312 is rotatably mounted on the inner end of the bearing 311. A mounting bracket 313 is pivotally connected between the two mounting brackets 313. A guide groove 314 is provided at the front end of the mounting bracket 313. A drive component 315 is provided on the extension arm 2 and is used to drive the mounting bracket 313 to move.

[0027] The execution component 32 includes a suction component 321 disposed on the adjustment component 31 for adsorbing impurities on the surface of the plastic bag. The suction component 321 is provided with a tubing assembly 322 for connecting multiple suction components 321.

[0028] In this embodiment, the rotating connection between the bearing seat 311 and the support rod 312, combined with the transmission between the guide groove 314 and the cam 3154 inside the mounting frame 313, and the support rod 312 of the parallelogram mechanism, ensures that the dust-collecting component 321 on the mounting frame 313 always maintains a horizontal posture during movement. Furthermore, the upper and lower sets of dust-collecting components 321 can simultaneously and tightly adhere to both sides of the plastic bag, achieving efficient dust removal through continuous contact. The entire cleaning system maintains stable operation during the continuous production of plastic bags, without affecting the normal traction of the film, and effectively removes debris and dust generated during the production process.

[0029] Specifically, the drive component 315 includes a mounting base 3151 fixed to the inner wall of the extension arm 2, a cylinder 3152 mounted on the mounting base 3151, a bracket 3153 fixed to the output end of the cylinder 3152, and cams 3154 rotatably mounted on both ends of the inner wall of the bracket 3153, with the cams 3154 located inside the guide groove 314.

[0030] In this embodiment, the cylinder 3152 drives the cam 3154 to move smoothly in the guide groove 314 through the bracket 3153, providing precise and reliable power output to the mounting bracket 313; the rolling engagement between the cam 3154 and the guide groove 314 effectively reduces the frictional resistance of the motion, ensuring that the cleaning mechanism 3 can operate stably for a long time.

[0031] Specifically, the dust collection component 321 includes several rollers 3211 rotatably mounted between two mounting brackets 313 at both ends, and several dust collection holes 3212 are circumferentially distributed on the rollers 3211.

[0032] In this embodiment, the roller 3211 passively rotates by direct contact with the surface of the moving plastic bag, achieving continuous dust collection without additional power, which simplifies the equipment structure and reduces energy consumption. The circumferentially distributed suction holes 3212 form a uniform negative pressure adsorption area during the roller rotation, ensuring that impurities on the surface of the plastic bag are removed from all directions. The parallel arrangement of multiple rollers 3211 expands the effective cleaning area and significantly improves dust removal efficiency. The passive rotation design avoids the scratches on the film surface that may be caused by traditional fixed dust collection devices, making it suitable for the production of products such as biodegradable and environmentally friendly plastic bags that have high requirements for surface integrity.

[0033] Specifically, the piping assembly 322 includes a bent pipe 3221 rotatably mounted on one end of the upper roller 3211, and a tee pipe 3222 rotatably mounted on one end of the lower roller 3211.

[0034] In this embodiment, the rotating connection ensures that the pipe assembly 322 does not obstruct the movement of the roller 3211 when it rotates freely with the plastic bag, thus maintaining the smoothness of the vacuuming process.

[0035] Specifically, the piping assembly 322 also includes a flexible hose 3223 fixed between the lower end of the bend 3221 and the upper end of the tee 3222.

[0036] In this embodiment, the flexible connection characteristics of the hose 3223 allow the upper and lower rollers 3211 to move freely during the spacing adjustment process without being restricted by the pipeline, ensuring the adaptability of the cleaning mechanism 3 to plastic bags of different thicknesses. Furthermore, the elastic deformation capability of the hose 3223 effectively absorbs the displacement changes generated when the mounting bracket 313 moves, avoiding the risk of pipeline twisting or breakage that may be caused by rigid connection. While ensuring the airflow channel is sealed, it does not interfere with the normal rotation of the rollers 3211 at all, maintaining the continuous and efficient working state of the suction hole 3212.

[0037] Specifically, the piping assembly 322 also includes a multi-way pipe 3224 fixed between the lower ends of several tee pipes 3222, and the lower end of the multi-way pipe 3224 is connected to a connector 3225.

[0038] In this embodiment, a vacuum cleaner can be connected via connector 3225; by connecting the vacuum cleaner to multi-port pipe 3224 and concentrating the airflow of multiple three-port pipes 3222, a unified negative pressure suction channel is formed, which significantly improves suction efficiency and ensures that dust and debris generated during the production of plastic bags are quickly removed.

[0039] The working principle and usage process of this utility model are as follows: First, the cylinder 3152 drives the cam 3154 to move smoothly in the guide groove 314 through the bracket 3153, providing precise and reliable power output to the mounting frame 313; the rolling engagement between the cam 3154 and the guide groove 314 effectively reduces the frictional resistance of the movement, ensuring that the cleaning mechanism 3 can operate stably for a long time; through the rotational connection of the bearing seat 311 and the support rod 312, in conjunction with the transmission between the guide groove 314 inside the mounting frame 313 and the cam 3154, and further in conjunction with the support rod 312 of the parallelogram mechanism, it is ensured that the dust suction component 321 on the mounting frame 313 always maintains a horizontal posture during movement; in addition, the upper and lower sets of dust suction components 321 can simultaneously and tightly adhere to both sides of the plastic bag, achieving efficient dust removal through continuous contact; the entire cleaning system maintains stable operation during the continuous production of plastic bags, without affecting the normal traction of the film, and can effectively remove debris and dust generated during the production process;

[0040] Furthermore, the roller 3211 achieves passive rotation through direct contact with the surface of the moving plastic bag, enabling continuous dust collection without additional power, which simplifies the equipment structure and reduces energy consumption. The circumferentially distributed suction holes 3212 form a uniform negative pressure adsorption area during the roller rotation, ensuring that impurities on the surface of the plastic bag are removed from all directions. The parallel arrangement of multiple rollers 3211 expands the effective cleaning area and significantly improves dust removal efficiency. The passive rotation design avoids scratches on the film surface that may be caused by traditional fixed dust collection devices, making it suitable for the production of products such as biodegradable and environmentally friendly plastic bags that have high requirements for surface integrity.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forming device for producing biodegradable and environmentally friendly plastic bags, comprising a traction machine (1), wherein extension arms (2) are fixed on both sides of the front end of the traction machine (1), characterized in that: The extension arm (2) is equipped with a cleaning mechanism (3) for removing dust and debris adhering to the surface of the plastic bags during the production process. The cleaning mechanism (3) includes: The adjustment assembly (31) includes bearing seats (311) fixed at both ends of the top and bottom of the extension arm (2), a support rod (312) is rotatably mounted on the inner end of the bearing seat (311), a mounting bracket (313) is pivotally connected between the two mounting brackets (313), a guide groove (314) is provided at the front end of the mounting bracket (313), and a drive component (315) is provided on the extension arm (2) for driving the mounting bracket (313) to move; The execution component (32) includes a suction component (321) disposed on the adjustment component (31) for adsorbing impurities on the surface of the plastic bag. The suction component (321) is provided with a tubing assembly (322) for connecting multiple suction components (321).

2. The molding device for producing biodegradable and environmentally friendly plastic bags according to claim 1, characterized in that: The drive component (315) includes a mounting base (3151) fixed to the inner wall of the extension arm (2), a cylinder (3152) is mounted on the mounting base (3151), a bracket (3153) is fixed to the output end of the cylinder (3152), and cams (3154) are rotatably mounted on both ends of the inner wall of the bracket (3153), and the cams (3154) are located inside the guide groove (314).

3. The molding device for producing biodegradable and environmentally friendly plastic bags according to claim 1, characterized in that: The dust collection component (321) includes a plurality of rollers (3211) rotatably mounted between two end mounting brackets (313), and the rollers (3211) are provided with a plurality of circumferentially distributed dust collection holes (3212).

4. The molding device for producing biodegradable and environmentally friendly plastic bags according to claim 3, characterized in that: The pipeline assembly (322) includes a bend (3221) rotatably mounted on one end of the upper roller (3211) and a tee pipe (3222) rotatably mounted on one end of the lower roller (3211).

5. The molding device for producing biodegradable and environmentally friendly plastic bags according to claim 4, characterized in that: The piping assembly (322) also includes a flexible hose (3223) fixed between the lower end of the bend (3221) and the upper end of the tee (3222).

6. The forming device for producing biodegradable and environmentally friendly plastic bags according to claim 4, characterized in that: The pipeline assembly (322) also includes a multi-port pipe (3224) fixed between the lower ends of several tee pipes (3222), and the lower end of the multi-port pipe (3224) is connected to a connector (3225).

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