Packaging bag flattening device

By combining the clamping and blocking components, the problem of damage caused by uncontrolled pressure during the clamping process of packaging bags is solved, achieving precise clamping and cushioning of packaging bags, and improving production efficiency and product quality.

CN224675659UActive Publication Date: 2026-08-25SHENZHEN YOUBANG PLASTIC PRINTING & PACKAGING CO LTD
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Patent Information

Application Number
CN202521456303.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-11
Publication Date
2026-08-25
Estimated Expiration
2035-07-11

AI Technical Summary

Technical Problem

Existing packaging bag clamping devices are prone to causing damage to the surface of packaging bags when the pressure exceeds the critical value, affecting the appearance quality and sealing function, and reducing production efficiency and product qualification rate.

Method used

The design combines a flattening component and a blocking component. The flattening component is driven by a cylinder to clamp the plate and cooperate with a spring, while the blocking component limits the position with a baffle. Combined with a soft flattening sleeve and an elastic roller, it can achieve precise flattening and cushioning of the packaging bag.

Benefits of technology

It effectively avoids damage to packaging bags caused by excessive or insufficient pressure during the flattening process, improves the flatness of packaging bags and the product qualification rate, and meets high-standard packaging requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to packing bag processing technical field, concretely discloses packing bag clamping device, including the placement board, the placement board bottom four corners all are fixedly connected with the support column, the inside of placement board is provided with a plurality of conveyer belts, the top of placement board is fixedly connected with two fixed plates, one conveyer belt outside fixedly connected with transmission assembly, the utility model discloses when using, through the flattening roller drive has the elastic flattening sleeve rotation, the advance smoothing packing bag obvious wrinkle, lay the foundation for the subsequent clamping process, clamping assembly cooperation blocking component, through the baffle accurate location, ensure that packing bag is in the best clamping position, double -dealing makes packing bag flat effect remarkable promotion, satisfies the high -standard packing demand, clamping process, the spring outside the connecting column plays the buffering effect, when the clamping plate is pressed down, the spring is automatically compressed or springs back according to the pressure size, the pressure is too big when slows down the impact force, avoids packing bag tearing, perforation.
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Description

Technical Field

[0001] This utility model relates to the field of packaging bag processing technology, specifically a packaging bag clamping device. Background Technology

[0002] Packaging bags are bags used to package various products, making it convenient to transport and store goods during the production and distribution process. Therefore, they are widely used in daily life and industrial production. When packaging bags are produced and processed, a clamping device is needed to clamp the packaging bags flat to facilitate subsequent production and processing. In existing technology, operators need to first use a roller flattening device to smooth the outer surface of the packaging bag. The elastic roller surface rotates at a uniform speed to eliminate wrinkles and preliminarily shape the bag. After the packaging bag enters the secondary flattening station, it will be pressed vertically downward to apply pressure to the bag body to make it flat. However, when the pressure exceeds the critical value, irreversible damage will occur on the surface of the packaging bag. At best, it will produce fine tear lines, affecting the appearance quality. At worst, it will cause the bag body to perforate, directly losing the sealing function and causing material leakage in the subsequent filling process, which will greatly affect production efficiency and product qualification rate. Therefore, we propose a packaging bag flattening device. Utility Model Content

[0003] The purpose of this invention is to provide a packaging bag clamping device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a packaging bag clamping device, including a placement plate, with support columns fixedly connected to the four corners of the bottom of the placement plate, multiple conveyor belts arranged inside the placement plate, and two fixing plates fixedly connected to the top of the placement plate, with a transmission assembly fixedly connected to the outside of one of the conveyor belts; further comprising: The flattening component is located on top of the placement plate and is used to flatten the packaging bag. The blocking component is located inside the clamping component and blocks the position of the packaging bag.

[0005] The transmission assembly includes a motor, and a rotating rod is fixedly connected to the output end of the motor. A rotating wheel is fixedly connected to the outside of the rotating rod. A rotating rod is rotatably connected inside the fixed plate. A rotating wheel is fixedly connected to the outside of the rotating rod. A connecting belt is sleeved on the outside of the rotating wheel and the rotating wheel.

[0006] The initial leveling component includes a flattening roller, and a flattening sleeve is fitted around both the initial leveling component and the flattening roller.

[0007] The clamping assembly includes a mounting plate with two connecting columns slidingly connected inside. Limiting blocks are fixedly connected to the top of the two connecting columns, and limiting plates are fixedly connected to the outside of the two limiting blocks. A cylinder is fixedly connected to the top of the limiting plates, and a push rod is fixedly connected to the output end of the cylinder. A spring is sleeved on the outside of the connecting columns, and a clamping plate is fixedly connected to the bottom of the two connecting columns.

[0008] The blocking component includes a baffle, with a limiting piece fixedly connected to the bottom of the baffle, and a limiting groove opened inside the clamping plate.

[0009] The push rod is fixedly connected to the bottom of the mounting plate, and the bottom of the clamping plate is in contact with the top of the placement plate.

[0010] One side of the spring is fixedly connected to the bottom of the limiting plate, and the other side of the spring is fixedly connected to the top of the clamping plate.

[0011] This utility model has at least the following beneficial effects: In use, this invention uses a flattening roller to drive an elastic flattening sleeve to smooth out obvious wrinkles in the packaging bag in advance, laying the foundation for the subsequent clamping process. The clamping component, together with the blocking component, uses baffles to precisely limit the position, ensuring that the packaging bag is in the optimal clamping position. This dual treatment significantly improves the flatness of the packaging bag, meeting high-standard packaging requirements. During the clamping process, the springs on the outside of the connecting column play a buffering role. When the clamping plate presses down, the springs automatically compress or rebound according to the pressure. When the pressure is too high, the impact force is reduced to prevent the packaging bag from tearing or perforating; when the pressure is insufficient, elastic restoring force is provided to ensure the clamping effect. This fundamentally solves the problem of damage caused by uncontrolled pressure in traditional clamping, improving the product qualification rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the placement plate structure of this utility model; Figure 3 This is a schematic diagram of the initial leveling component structure of this utility model; Figure 4 This is a schematic diagram of the transmission component structure of this utility model; Figure 5 This is a schematic diagram of the blocking component structure of this utility model; In the diagram: 1. Placement plate; 101. Support column; 2. Conveyor belt; 3. Fixing plate; 4. Transmission assembly; 401. Motor; 402. Rotating rod one; 403. Rotating wheel one; 404. Rotating rod two; 405. Rotating wheel two; 406. Connecting belt; 5. Initial leveling assembly; 501. Flattening roller; 502. Flattening sleeve; 6. Clamping assembly; 601. Mounting plate; 602. Connecting column; 603. Limiting block; 604. Limiting plate; 605. Cylinder; 606. Push rod; 607. Spring; 608. Clamping plate; 7. Blocking assembly; 701. Baffle; 702. Limiting piece; 703. Limiting groove. Detailed Implementation

[0013] 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.

[0014] Example 1 Please see Figures 1 to 5 This utility model provides a technical solution: a packaging bag clamping device, including a placement plate 1, with support columns 101 fixedly connected to the four corners of the bottom of the placement plate 1, multiple conveyor belts 2 arranged inside the placement plate 1, and two fixing plates 3 fixedly connected to the top of the placement plate 1, with a transmission assembly 4 fixedly connected to the outside of one of the conveyor belts 2; it also includes: The clamping component 6 is set on the top of the placement plate 1 and is used to clamp the packaging bag flat. The blocking component 7 is located inside the clamping component 6 and blocks the position of the packaging bag. Multiple conveyor belts 2 inside the placement plate 1 work together to transport the packaging bag into the device. The motor 401 in the transmission component 4 starts, driving the rotating rod 402 to rotate. The rotating wheel 403 on the rotating rod 402 rotates accordingly. The rotating wheel 403 drives the rotating wheel 405 to rotate through the connecting belt 406, which in turn causes the rotating rod 404 to rotate, driving the initial leveling component 5 to work.

[0015] The transmission assembly 4 includes a motor 401, and a rotating rod 402 is fixedly connected to the output end of the motor 401. A rotating wheel 403 is fixedly connected to the outside of the rotating rod 402. A rotating rod 404 is rotatably connected inside the fixed plate 3. A rotating wheel 405 is fixedly connected to the outside of the rotating rod 404. A connecting belt 406 is sleeved on the outside of the rotating wheel 403 and the rotating wheel 405. The connecting belt 406 is sleeved on the outside of the rotating wheel 403 and the rotating wheel 405 to connect the rotating wheel 403 and the rotating wheel 405, realize the power transmission between them, and ensure the stability of the transmission.

[0016] The initial leveling component 5 includes a flattening roller 501, and a flattening sleeve 502 is fitted around the initial leveling component 5 and the flattening roller 501. The flattening roller 501 rotates under the drive of the rotating rod 404, and the flattening sleeve 502 fitted around it contacts the surface of the packaging bag and applies pressure. Since the flattening sleeve 502 is soft and elastic, it can initially smooth out the more obvious wrinkles or uneven areas on the surface of the packaging bag, so that the packaging bag reaches a relatively flat state before entering the clamping component 6.

[0017] The clamping assembly 6 includes a mounting plate 601. Two connecting posts 602 are slidably connected inside the mounting plate 601. Limiting blocks 603 are fixedly connected to the tops of the two connecting posts 602. Limiting plates 604 are fixedly connected to the outside of the two limiting blocks 603. A cylinder 605 is fixedly connected to the top of the limiting plate 604, and a push rod 606 is fixedly connected to the output end of the cylinder 605. Springs 607 are sleeved on the outside of the connecting posts 602. Clamping plates 608 are fixedly connected to the bottoms of the two connecting posts 602. The top of the push rod 606 is fixedly connected to the bottom of the mounting plate 601. The bottom of the clamping plate 608 contacts the top of the placement plate 1. One side of the spring 607 is fixedly connected to the limiting plate. At the bottom of 604, the other side of spring 607 is fixedly connected to the top of clamping plate 608. When the packaging bag is conveyed to the bottom of clamping plate 608, cylinder 605 is activated, pushing push rod 606, which drives connecting column 602 and clamping plate 608 to move downward. Spring 607, which is sleeved on the outside of connecting column 602, plays a role in this process. When clamping plate 608 contacts packaging bag, if the pressure is too high, spring 607 will be compressed to reduce the downward impact force of clamping plate 608 and avoid damage to packaging bag. If the pressure is insufficient, the elastic restoring force of spring 607 can ensure that clamping plate 608 maintains a certain clamping pressure on packaging bag to ensure the clamping effect.

[0018] The blocking component 7 includes a baffle 701, with a limiting piece 702 fixedly connected to the bottom of the baffle 701, and a limiting groove 703 opened inside the clamping plate 608. The baffle 701 is installed in the limiting groove 703 inside the clamping plate 608 through the limiting piece 702 at the bottom. When the packaging bag is conveyed to the bottom of the clamping plate 608, the baffle 701 can prevent the packaging bag from moving excessively and make it accurately positioned at the bottom of the clamping plate 608.

[0019] The working principle of this utility model is as follows: multiple conveyor belts 2 inside the placement plate 1 are used to transport packaging bags so that they can move within the device. After the motor 401 in the transmission assembly 4 is started, it drives the rotating rod 402 to rotate, and the rotating wheel 403 on the rotating rod 402 rotates accordingly, so that the initial leveling assembly 5 starts to work under the drive of the transmission assembly 4. The flattening roller 501 rotates under the drive of the rotating rod 404. Since the flattening roller 501 is covered with a flattening sleeve 502, which has a certain degree of softness and elasticity, when the packaging bag passes under the flattening roller 501 under the drive of the conveyor belt 2, the rotating flattening roller 501 and the flattening sleeve 502 on it will contact the surface of the packaging bag and apply a certain pressure, so as to initially smooth out the more obvious wrinkles or uneven areas on the surface of the packaging bag, so that the packaging bag has a relatively flat state before entering the clamping assembly 6. During the downward movement of the clamping plate 608 to flatten the packaging bag, the spring 607 sleeved on the outside of the connecting column 602 plays a buffering role. One end of the spring 607 is fixed to the bottom of the limiting plate 604, and the other end is fixed to the top of the clamping plate 608. When the clamping plate 608 contacts the packaging bag, if the pressure is too great, the spring 607 will be compressed to reduce the downward impact force of the clamping plate 608 and avoid damage to the packaging bag due to excessive pressure. If the pressure is insufficient, the elastic restoring force of the spring 607 can ensure that the clamping plate 608 maintains a certain clamping pressure on the packaging bag to ensure the flattening effect.

[0020] Example 2 Please see Figures 4 to 5 In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that the blocking component 7 plays a role in the clamping process. The baffle 701 is installed in the limiting groove 703 inside the clamping plate 608 through the limiting piece 702 at the bottom. It can block and limit the position of the packaging bag. When the packaging bag is transported to the bottom of the clamping plate 608, the baffle 701 can prevent the packaging bag from moving excessively and make it accurately located at the bottom of the clamping plate 608, which makes it easier for the clamping plate 608 to clamp it flat. At the same time, it can also help the clamping plate 608 to better clamp the packaging bag flat, thereby improving the clamping effect and quality.

[0021] 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.

[0022] 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 packaging bag clamping device, including a placement plate, characterized in that: The placement plate is fixedly connected to four support columns at its bottom corners. Multiple conveyor belts are installed inside the placement plate. Two fixed plates are fixedly connected to the top of the placement plate. A transmission component is fixedly connected to the outside of one of the conveyor belts. Its characteristic is that it also includes: A flattening assembly is disposed on the top of the placement plate and is used to flatten the packaging bag. A blocking component is disposed inside the clamping component to block the position of the packaging bag; The initial leveling assembly includes a flattening roller, and a flattening sleeve is fitted around both the initial leveling assembly and the flattening roller.

2. The packaging bag clamping device according to claim 1, characterized in that: The transmission assembly includes a motor, and a rotating rod is fixedly connected to the output end of the motor. A rotating wheel is fixedly connected to the outside of the rotating rod. A rotating rod is rotatably connected inside the fixed plate. A rotating wheel is fixedly connected to the outside of the rotating rod. A connecting belt is sleeved on the outside of the rotating wheel and the rotating wheel.

3. The packaging bag clamping device according to claim 1, characterized in that: The clamping assembly includes a mounting plate, inside which two connecting columns are slidably connected. Limiting blocks are fixedly connected to the top of the two connecting columns, and limiting plates are fixedly connected to the outside of the two limiting blocks. A cylinder is fixedly connected to the top of the limiting plate, and a push rod is fixedly connected to the output end of the cylinder. A spring is sleeved on the outside of the connecting columns, and clamping plates are fixedly connected to the bottom of the two connecting columns.

4. The packaging bag clamping device according to claim 3, characterized in that: The blocking assembly includes a baffle, a limiting piece is fixedly connected to the bottom of the baffle, and a limiting groove is formed inside the clamping plate.

5. The packaging bag clamping device according to claim 3, characterized in that: The top of the push rod is fixedly connected to the bottom of the mounting plate, and the bottom of the clamping plate is in contact with the top of the placement plate.

6. The packaging bag clamping device according to claim 3, characterized in that: One side of the spring is fixedly connected to the bottom of the limiting plate, and the other side of the spring is fixedly connected to the top of the clamping plate.