A forming apparatus for degradable packaging bags

Abstract

The utility model discloses a kind of forming equipment of degradable packaging bag, the equipment includes bag making machine main body, bag making machine main body front end is equipped with feeding mechanism, one side is equipped with control box, bottom surface is equipped with support leg;Its rear gap is fixed support table, support table rear end assembly winding assembly, bottom disc is equipped under winding assembly, support table and bottom disc assembly guide component between it.The winding assembly contains double cylinder support, L-shaped support, motor, winding rod, guide rail sliding rod, screw, motor and chuck, can realize packaging bag neat winding and automatic unloading;Guide component contains guide inclined plate, guide sliding rod, support sliding frame, extension spring, lower roller and motor, can accurately link conveying and winding link, and adaptively winding diameter change.The equipment is conveyed by guide component to ensure continuity, with the aid of winding assembly, accurately and efficiently winding is realized, relying on bottom disc, subsequent smooth flow is assisted, overall improvement degradable packaging bag production efficiency and quality, satisfy the needs of automatic continuous production.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, and in particular to a molding device for biodegradable packaging bags. Background Technology

[0002] With increasingly stringent environmental protection requirements, biodegradable packaging bags are finding wider application in food and daily necessities packaging due to their ability to degrade naturally and reduce environmental burden. Market demand for both quantity and quality continues to rise. However, existing biodegradable packaging bag forming equipment has several shortcomings in its production process, making it difficult to meet the demands for efficient and high-quality production.

[0003] In existing technologies, the material conveying process in forming equipment suffers from poor connectivity. When the finished packaging bags from the bag-making machine are conveyed to the winding device, jamming and misalignment often occur due to the lack of a precise guiding structure. This not only leads to wrinkles and damage to the packaging bags but also interrupts the production process and reduces production efficiency. In the winding stage, existing equipment mostly uses a simple winding structure that relies on manual positioning. The rolled packaging bags have low regularity, and manual unloading is required after winding, which is time-consuming and labor-intensive, making it impossible to achieve automated continuous production.

[0004] Furthermore, during the winding process, as the diameter of the packaging bag roll increases, traditional equipment lacks an adaptive adjustment mechanism, which easily leads to unstable winding tension and further affects winding quality. At the same time, there is no effective connection structure between the winding device and subsequent processing stages. After unloading, the packaging bag rolls need to be manually transferred to the next process, which not only increases labor costs but also easily causes the packaging bag rolls to scatter and become contaminated, hindering the smooth operation of the overall production process.

[0005] To address this, a biodegradable packaging bag forming device is proposed, featuring continuous material conveying, precise and efficient winding, and smooth subsequent circulation. Utility Model Content

[0006] The purpose of this invention is to solve the above problems by proposing a molding device for biodegradable packaging bags.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a biodegradable packaging bag forming device, comprising a bag-making machine body; a feeding mechanism for conveying biodegradable substrate is fixedly mounted at the front end of the bag-making machine body, and a control box for controlling the operating parameters of the device is fixedly mounted at one side near the upper corner; support legs for stable support are fixedly mounted at the four corners of the bottom surface of the bag-making machine body and the feeding mechanism; a notch is provided at the rear end of the bag-making machine body, and a support platform is fixedly mounted in the notch; a winding assembly for winding and forming packaging bags is fixedly mounted at the rear end of the support platform, and a base plate for reinforcement is fixedly mounted at the rear end of the support platform, directly below the winding assembly; a guide assembly is fixedly mounted between one side of the support platform and the middle of the base plate, and the rear end of the guide assembly is aligned with the rear end of the conveyor belt of the bag-making machine body, for guiding the packaging bags on the conveyor belt to the winding assembly.

[0008] Preferably, the winding assembly includes a double-cylinder bracket fixedly welded to a semi-circular groove at one corner of the top surface of the support platform, an L-shaped bracket fixedly welded to one side of the support platform, a first motor fixedly assembled in the lower cylinder of the double-cylinder bracket, a winding rod fixedly assembled at the output end of the first motor, two guide rail slides fixedly welded between the upper ends of the double-cylinder bracket and the L-shaped bracket, a screw with both ends inserted into the through holes at the upper ends of the double-cylinder bracket and the L-shaped bracket respectively, a second motor fixedly assembled in the upper cylinder of the double-cylinder bracket, and two clamping discs slidably sleeved on the guide rail slides.

[0009] Preferably, one end of the chassis is welded to one side of the inside of the support platform, and the other end is welded to the lower end of the L-shaped bracket; the first motor can drive the winding rod to rotate in both directions; the screw passes through the threaded through hole on the chuck, and the second motor can drive the screw to rotate, thereby causing the chuck to slide along the guide rail slide bar, so as to realize the engagement or disengagement of the chuck and the winding rod.

[0010] Preferably, the guide assembly includes a guide inclined plate, two guide slide rods integrally formed with the bottom edge of the guide inclined plate, two support slide frames respectively sleeved on the outside of the guide slide rods, two telescopic springs respectively sleeved on the outside of the guide slide rods, a lower pressure roller shaft rotatably installed between the upper ends of the support slide frames, and a No. 3 motor fixedly assembled in the through hole at the upper end of one of the support slide frames.

[0011] Preferably, the ends of the two supporting slide frames away from the guide inclined plate are welded to one side of the support platform and the middle of the chassis, respectively, to achieve fixed assembly of the guide components; the telescopic spring is located in front of the supporting slide frame, and the rectangular column protrusion at the front end of the supporting slide frame is in contact with the bottom edge of the guide inclined plate; the output end of the No. 3 motor is inserted into and fixed to one end of the lower pressure roller shaft, which can drive the lower pressure roller shaft to rotate; the outer side of the lower pressure roller shaft is in contact with the top surface of the guide inclined plate, and the upper end of the guide inclined plate faces the opening of the winding rod, ensuring that the packaging bag is accurately guided to the winding rod.

[0012] The beneficial effects of this utility model are as follows: Through the setting of the support platform, winding assembly, chassis and guide assembly, the specific beneficial effects are as follows: ensuring continuous material conveying: the guide assembly accurately connects the bag making machine body and the winding assembly, ensuring that the packaging bag is stably guided to the winding rod; the support platform provides a stable assembly base for each component, and works with the winding assembly to realize the orderly winding of the packaging bag, forming a continuous "guiding-winding" process, avoiding material jamming and deviation.

[0013] Achieving precise and efficient winding: The winding assembly, through motor drive, guide rail limiting and other structures, completes the neat winding and automatic unloading of packaging bags; the guiding assembly can adaptively adjust with the change of winding diameter to ensure a smooth winding process and improve winding efficiency and packaging bag roll neatness.

[0014] Facilitating smooth subsequent flow: The chassis receives the unloaded packaging bag rolls and precisely guides them to the next processing stage, connecting the rewinding and subsequent processes; after each component completes the unloading in coordination, the guide assembly automatically resets and quickly enters the next cycle, ensuring a smooth and efficient overall processing flow. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the overall structure of this utility model; Appendix Figure 2 This is a schematic diagram of the support platform, winding assembly, chassis and guide assembly of this utility model; Appendix Figure 3 This is the utility model Figure 2 Enlarged diagram of part A in the middle; Appendix Figure 4 This is a schematic diagram of the winding assembly structure of this utility model; Appendix Figure 5 This is a schematic diagram of the No. 1 motor and the winding rod of this utility model; Appendix Figure 6 This is the utility model Figure 1 Enlarged diagram of section B; Appendix Figure 7 This is a schematic diagram of the chassis structure of this utility model; Appendix Figure 8 This is an exploded view of the guide component of this utility model; Appendix Figure 9 This is the utility model Figure 1 Enlarged diagram of section C.

[0016] Legend: 1. Bag making machine body; 2. Feeding mechanism; 3. Control box; 4. Support legs; 5. Bracket; 6. Winding assembly; 601. Double cylinder bracket; 602. L-shaped bracket; 603. Motor No. 1; 604. Winding rod; 605. Guide rail slide bar; 606. Screw; 607. Motor No. 2; 608. Clamping plate; 7. Chassis; 8. Guide assembly; 801. Guide inclined plate; 802. Guide slide bar; 803. Support slide frame; 804. Telescopic spring; 805. Lower pressure roller shaft; 806. Motor No. 3. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] See Figure 1-9 As shown, the main body 1 of the bag making machine serves as the core carrier and processing unit of the equipment, undertaking the core processing function. It can receive the biodegradable substrate conveyed by the feeding mechanism 2, and process the substrate into biodegradable packaging bags through the internal processing structure. At the same time, the built-in conveyor belt can discharge the processed packaging bags to the outside, providing a material source for the subsequent guiding and winding stages.

[0019] The feeding mechanism 2 is fixedly assembled at the front end of the bag making machine body 1. It is specifically used to convey biodegradable substrates, ensuring a stable and continuous supply of substrates to the bag making machine body 1. It is the starting point for material input in the equipment processing flow and ensures the continuity of the entire bag making process.

[0020] The control box 3 is fixed on one side of the main body 1 of the bag making machine, near the upper corner. It is used to control the operating parameters of the equipment. The operator can set key parameters such as processing speed, cutting time, and motor speed through the control box 3 to regulate the overall operating status of the equipment and ensure that the equipment works stably as required.

[0021] The support legs 4 are fixedly mounted on the four corners of the bottom surface of the bag making machine body 1 and the feeding mechanism 2, respectively, to provide stable support, balance the overall weight of the equipment, and prevent the equipment from tilting or shifting due to vibration, processing force and other factors during operation, thus providing a stable working foundation for the equipment.

[0022] The support platform 5 is fixedly assembled in the notch at the rear end of the bag making machine body 1, serving as the mounting carrier for the rear functional components. On the one hand, it provides a top mounting position for the winding assembly 6, and on the other hand, it cooperates with the chassis 7 and the guide assembly 8 to achieve coordinated assembly of various components. At the same time, it connects the bag making machine body 1 with the rear winding stage to form a complete processing and conveying path.

[0023] The winding assembly 6 serves as the core unit for collecting the packaging bag after it has been formed. All components work together to achieve precise winding, automatic release, and discharge of the packaging bag.

[0024] The chassis 7 is fixedly mounted at the rear end of the support platform 5 and located directly below the winding assembly 6. Its main functions include three aspects: First, it reinforces the support by welding to one side of the support platform 5 and the lower end of the L-shaped bracket 602, thereby enhancing the installation stability of the winding assembly 6 and the guide assembly 8 and preventing the components from loosening due to vibration during operation. Second, it receives the discharged packaging bag rolls. When the clamp 608 pushes the packaging bag rolls away from the winding rod 604, the chassis 7 can receive the falling packaging bag rolls. Third, it guides and conveys the packaging bag rolls. With the lower end of the chassis 7 aligned with the subsequent processing conveyor belt, it can accurately guide the received packaging bag rolls to the next processing stage, realizing the continuous flow of materials.

[0025] The guide assembly 8 connects the main body 1 of the bag making machine and the winding assembly 6, mainly to achieve precise guidance and transportation of the packaging bag from the conveyor belt to the winding rod 604, while adapting to the change in the diameter of the packaging bag roll during the winding process.

[0026] See Figure 1-6 As shown, the double-cylinder bracket 601 is fixedly welded to a semi-circular groove at one corner of the top surface of the support platform 5. It is the core mounting bracket of the winding assembly 6. The lower cylinder is used to fix and assemble the No. 1 motor 603, providing a stable mounting space for the motor. The upper end cooperates with the L-shaped bracket 602 to install the guide rail slide rod 605, screw 606 and the No. 2 motor 607. At the same time, the structural design provides positioning support for the operation of the winding rod 604 and the clamp 608, ensuring that the winding action is carried out in an orderly manner.

[0027] The L-shaped bracket 602 is fixedly welded to one side of the support platform 5, forming a symmetrical support structure with the double-cylinder bracket 601. The upper end, together with the double-cylinder bracket 601, bears the guide rail slide rod 605 and the screw rod 606, ensuring the track stability when the clamp 608 slides. The lower end is welded to the chassis 7, further enhancing the connection strength between the winding assembly 6 and the chassis 7, and preventing the bracket from deforming due to the force on the components during the winding process.

[0028] Motor 603 is fixedly mounted inside the lower cylinder of the double-cylinder bracket 601 as a winding power source. Its output end is fixedly connected to the winding rod 604, which can drive the winding rod 604 to rotate in both directions, thereby achieving the winding action of the packaging bag conveyed by the guide component 8, and winding the packaging bag around the winding rod 604 to form a roll.

[0029] The winding rod 604 is fixed to the output end of the first motor 603 and is the direct carrier for winding the packaging bag. Its opening faces the upper end of the guide inclined plate 801 and can receive the packaging bag conveyed by the guide component 8. Driven by the first motor 603, it rotates and tightly winds the packaging bag onto the rod to form a regular packaging bag roll. At the same time, it provides an object for the clamping plate 608 to engage and disengage, ensuring that the packaging bag roll can be smoothly disengaged after winding.

[0030] Two guide rails 605 are fixedly welded between the upper ends of the double-cylinder bracket 601 and the L-shaped bracket 602, serving as the sliding track of the clamp 608. This restricts the movement direction of the clamp 608, ensuring that the clamp 608 can only move in a straight line along the guide rails 605, preventing the clamp 608 from shifting or tilting during movement, and ensuring that the clamp 608 and the winding rod 604 are precisely engaged or disengaged.

[0031] The screw 606 has its two ends inserted into the upper through holes of the double-cylinder bracket 601 and the L-shaped bracket 602, respectively, and passes through the threaded through hole on the chuck 608, serving as the power transmission component for the chuck 608. When the second motor 607 drives the screw 606 to rotate, the screw 606 converts the rotational motion into the linear motion of the chuck 608 through the threaded engagement, causing the chuck 608 to slide along the guide rail slide 605, providing power for the engagement and disengagement of the chuck 608 with the winding rod 604.

[0032] Motor 607 is fixedly mounted inside the upper cylinder of the double-cylinder bracket 601, serving as the power source for the clamp 608. Its output end is connected to the screw 606, driving the screw 606 to rotate in both directions. By controlling the rotation direction of the screw 606, the clamp 608 is engaged or disengaged from the winding rod 604, thereby controlling the fixing and discharge of the packaging bag roll. It is a key power component for the automated unloading of the winding assembly 6.

[0033] The clamp 608 is slidably mounted on the guide rail slide bar 605 and is connected to the screw 606 via a threaded engagement. Its main function is to fix and push the packaging bag roll. Before winding begins, the clamp 608 moves towards the winding bar 604 and engages with it under the drive of the screw 606, limiting both ends of the winding bar 604 to ensure that the packaging bag is neatly positioned when winding. After winding is completed, the clamp 608 moves away from the winding bar 604, pushing the formed packaging bag roll off the winding bar 604 and into the base plate 7, completing the unloading action.

[0034] See Figure 1-9As shown, the guide inclined plate 801 serves as a guide carrier for the packaging bag. Its surface is connected to the discharge end of the conveyor belt of the bag making machine body 1. After the packaging bag is discharged from the conveyor belt, it can slide against the surface of the guide inclined plate 801. At the same time, the upper end of the guide inclined plate 801 faces the opening of the winding rod 604, which can accurately guide the packaging bag into the inside of the winding rod 604, avoid the packaging bag from shifting or getting stuck during the conveying process, and ensure the stability of the material conveying path.

[0035] Two guide slide rods 802 are integrally formed with the bottom edge of the guide tilt plate 801, serving as sliding support components for the guide tilt plate 801. The guide slide rods 802 are fitted inside the support slide frame 803 and can slide along the internal track of the support slide frame 803. During the winding process, as the diameter of the packaging bag roll gradually increases, the packaging bag roll pushes the guide tilt plate 801, thereby causing the guide slide rods 802 to slide within the support slide frame 803. This achieves adaptive adjustment of the position of the guide tilt plate 801, preventing rigid collisions between the packaging bag roll and the guide tilt plate 801.

[0036] Two support slide frames 803 are respectively fitted onto the outside of the guide slide rod 802, and the ends away from the guide tilt plate 801 are welded to one side of the inside of the support platform 5 and the middle of the chassis 7, respectively, serving as the fixing and support carrier for the guide assembly 8. On the one hand, the support slide frames 803 provide a sliding track for the guide slide rod 802, restricting the movement direction of the guide slide rod 802 and ensuring that the guide tilt plate 801 can only tilt and move in the front-back direction; on the other hand, the rectangular column protrusion at the front end of the support slide frame 803 fits against the bottom edge of the guide tilt plate 801, providing support for the guide tilt plate 801.

[0037] Two telescopic springs 804 are respectively sleeved on the outside of the guide slide rod 802 and located in front of the support slide frame 803. They are the reset and buffer components of the guide tilt plate 801. When the packaging bag roll pushes the guide slide rod 802 to slide inward into the support slide frame 803, the telescopic springs 804 are compressed, generating a reverse elastic force. This not only buffers the pushing force of the packaging bag roll on the guide tilt plate 801 to avoid damage to the components, but also pushes the guide slide rod 802 to reset after the packaging bag roll is discharged, so that the guide tilt plate 801 returns to its initial position, preparing for the next guiding operation.

[0038] The lower pressure roller shaft 805 is rotatably mounted on the upper end of the support slide frame 803, and its outer side is in contact with the top surface of the guide inclined plate 801. It is the conveying drive component for the packaging bag. When the lower pressure roller shaft 805 rotates, the friction between it and the guide inclined plate 801 will drive the packaging bag attached to the surface of the guide inclined plate 801 to move forward, accurately conveying the packaging bag into the winding rod 604. At the same time, the downward pressure ensures that the packaging bag fits tightly against the guide inclined plate 801, avoiding wrinkles or deviations during the conveying process.

[0039] Motor 806 is fixedly mounted in the through hole at the upper end of one of the support slide frames 803. Its output end is inserted into and fixed to one end of the lower pressure roller shaft 805, serving as the power source for the lower pressure roller shaft 805. Motor 806 can drive the lower pressure roller shaft 805 to rotate. By controlling the motor speed, the rotation speed of the lower pressure roller shaft 805 can be adjusted, thereby matching the output speed of the bag making machine body 1 and the winding speed of the winding rod 604, ensuring a smooth and continuous conveying process for the packaging bags, and avoiding material accumulation or tearing.

[0040] The operating procedure of this utility model is as follows: When setting equipment parameters, the operator uses the control box 3, which is fixed to one side of the bag-making machine body 1 near the upper corner, to set key operating parameters such as processing speed, cutting timing, and the rotation speeds of motors 603 (No. 1), 607 (No. 2), and 806 (No. 3), to prepare for stable operation of the equipment. At this time, the bag-making machine body 1 and the feeding mechanism 2 remain stable under the support of the four corner supports 4 on the bottom surface.

[0041] When the substrate is fed and conveyed, after the equipment is started, the feeding mechanism 2, which is fixedly assembled at the front end of the bag making machine body 1, starts to work, stably and continuously conveying the biodegradable substrate into the bag making machine body 1 as the material input for processing, ensuring the continuity of the subsequent bag making process.

[0042] During the bag-making process, the main body 1 of the bag-making machine receives the biodegradable substrate from the feeding mechanism 2, and processes the substrate through its internal processing structure to form biodegradable packaging bags. After processing, the conveyor belt built into the main body 1 of the bag-making machine starts, discharging the formed biodegradable packaging bags outwards, providing material for subsequent guiding and winding processes.

[0043] During the guiding and conveying of the packaging bags, the biodegradable packaging bags discharged from the conveyor belt of the bag making machine body 1 slide against the surface of the guide inclined plate 801 in the guide assembly 8. At the same time, the No. 3 motor 806, fixed in the through hole at the upper end of the support slide frame 803, drives the lower pressure roller shaft 805 to rotate. The friction between the lower pressure roller shaft 805 and the guide inclined plate 801 drives the packaging bag forward, precisely guiding the packaging bag into the inside of the winding rod 604 of the winding assembly 6. During this process, the guide slide rod 802, which is integrally formed on the bottom edge of the guide inclined plate 801, is sleeved in the support slide frame 803. The support slide frame 803 provides a stable sliding track for the guide slide rod 802 by welding to one side of the support platform 5 and the middle of the chassis 7, ensuring the stability of the guiding process.

[0044] During the packaging bag winding operation, after the biodegradable packaging bag is conveyed into the winding rod 604, the No. 1 motor 603, fixedly mounted in the lower cylinder of the double-cylinder bracket 601, starts, and its output end drives the winding rod 604 to rotate. During rotation, the winding rod 604 tightly winds the packaging bag conveyed by the guide assembly 8 onto the rod body, forming a regular roll of biodegradable packaging bag. During winding, as the diameter of the packaging bag roll gradually increases, the roll pushes the guide inclined plate 801, which in turn drives the guide slide rod 802 to slide within the support slide frame 803. The telescopic spring 804, sleeved on the outside of the guide slide rod 802 and located in front of the support slide frame 803, is compressed, buffering the thrust of the packaging bag roll on the guide inclined plate 801 through reverse elastic force, while adapting to changes in the diameter of the packaging bag roll during winding. During this process, the double-cylinder bracket 601 and the L-shaped bracket 602 cooperate to provide stable support for the winding rod 604 and the clamping plate 608, ensuring the orderly winding operation.

[0045] During the cutting and unloading of the packaging bag roll, once the diameter of the biodegradable packaging bag roll to be wound is larger than the diameter of the clamp 608, the cutting device (a conventional component) of the bag making machine body 1 is activated to cut the biodegradable packaging bag. Subsequently, the No. 2 motor 607, fixedly mounted in the upper cylinder of the double-cylinder support 601, drives the screw 606 to rotate. The screw 606, through threaded engagement, drives the clamp 608, which is sleeved on the guide rail slide 605, to move along the guide rail slide 605 away from the winding rod 604. During the movement, the clamp 608 pushes the formed biodegradable packaging bag roll away from the winding rod 604, and the packaging bag roll then falls into the chassis 7, which is fixed at the rear end of the support platform 5 and located directly below the winding assembly 6.

[0046] During subsequent material transfer, the biodegradable packaging bag rolls that fall into the chassis 7 slide down the structure of the chassis 7. Since the lower end of the chassis 7 is aligned with the subsequent processing conveyor belt, the packaging bag rolls are ultimately precisely guided to the next processing stage, achieving continuous material transfer. At the same time, after the packaging bag rolls detach from the winding rod 604, the telescopic spring 804 on the outside of the guide slide rod 802 returns to its original state, pushing the guide slide rod 802 to reset within the support slide frame 803, and driving the guide tilt plate 801 back to its initial position, preparing for the guidance and conveying of the next round of packaging bags, and the equipment enters the next processing cycle.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art should understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A forming device for biodegradable packaging bags, characterized in that: The bag making machine includes a main body (1); a feeding mechanism (2) for conveying biodegradable substrate is fixedly installed at the front end of the main body (1), and a control box (3) for controlling the operating parameters of the equipment is fixedly installed at one side near the upper corner; support legs (4) for stable support are fixedly installed at the four corners of the bottom surface of the main body (1) and the feeding mechanism (2); a notch is provided at the rear end of the main body (1), and a support platform (5) is fixedly installed in the notch; a winding assembly (6) for winding and forming packaging bags is fixedly installed at the rear end of the support platform (5), and a base plate (7) for reinforcing support is fixedly installed at the rear end of the support platform (5) and directly below the winding assembly (6); a guide assembly (8) is fixedly installed between one side of the support platform (5) and the middle of the base plate (7), and the rear end of the guide assembly (8) is aligned with the rear end of the conveyor belt of the main body (1) for guiding the packaging bags on the conveyor belt to the winding assembly (6).

2. The forming equipment for a biodegradable packaging bag according to claim 1, characterized in that: The winding assembly (6) includes a double-cylinder bracket (601) fixedly welded to a semi-circular groove at one corner of the top surface of the support platform (5), an L-shaped bracket (602) fixedly welded to one side of the support platform (5), a first motor (603) fixedly assembled in the lower cylinder of the double-cylinder bracket (601), a winding rod (604) fixedly assembled at the output end of the first motor (603), two guide rail slides (605) fixedly welded between the upper ends of the double-cylinder bracket (601) and the L-shaped bracket (602), a screw (606) with its two ends inserted into the through holes at the upper ends of the double-cylinder bracket (601) and the L-shaped bracket (602), a second motor (607) fixedly assembled in the upper cylinder of the double-cylinder bracket (601), and two clamps (608) slidably sleeved on the guide rail slides (605).

3. The forming equipment for a biodegradable packaging bag according to claim 2, characterized in that: One end of the chassis (7) is welded to one side of the inside of the support platform (5), and the other end is welded to the lower end of the L-shaped bracket (602); the first motor (603) can drive the winding rod (604) to rotate in both directions; the screw (606) passes through the threaded through hole on the chuck (608), and the second motor (607) can drive the screw (606) to rotate, thereby driving the chuck (608) to slide along the guide rail slide (605), so as to realize the engagement or disengagement of the chuck (608) and the winding rod (604).

4. The forming equipment for a biodegradable packaging bag according to claim 3, characterized in that: The guide assembly (8) includes a guide tilt plate (801), two guide slide rods (802) integrally formed with the bottom edge of the guide tilt plate (801), two support slide frames (803) respectively sleeved on the outside of the guide slide rods (802), two telescopic springs (804) respectively sleeved on the outside of the guide slide rods (802), a lower pressure roller shaft (805) rotatably installed between the upper ends of the support slide frames (803), and a No. 3 motor (806) fixedly assembled in the through hole at the upper end of one of the support slide frames (803).

5. The forming equipment for a biodegradable packaging bag according to claim 4, characterized in that: In the two support slide frames (803), the ends away from the guide tilt plate (801) are welded to one side of the inside of the support platform (5) and the middle of the chassis (7) respectively, so as to realize the fixed assembly of the guide component (8); the telescopic spring (804) is located in front of the support slide frame (803), and the rectangular column protrusion at the front end of the support slide frame (803) is in contact with the bottom edge of the guide tilt plate (801); the output end of the No. 3 motor (806) is inserted into and fixed to one end of the lower pressure roller shaft (805), which can drive the lower pressure roller shaft (805) to rotate; the outer side of the lower pressure roller shaft (805) is in contact with the top surface of the guide tilt plate (801), and the upper end of the guide tilt plate (801) faces the opening of the winding rod (604), so as to ensure that the packaging bag is accurately guided to the winding rod (604).

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