A plastic bag production mixing device
By using a multi-stage gear transmission system and an auger tipping design, the problems of low mixing efficiency and material blockage in plastic bag production have been solved, achieving efficient and uniform mixing and continuous feeding, thus improving production efficiency and equipment stability.
Patent Information
- Application Number
- CN202620011184.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-07
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2036-01-07
AI Technical Summary
Existing mixing devices for plastic bag production have low mixing efficiency, and materials are prone to dead zones, resulting in poor mixing uniformity, affecting production progress and potentially causing blockage of the feeding channel.
The system employs a multi-stage gear transmission system, including a motor-driven transmission rod, multiple rotating rods, and a stirring rod. The gear meshing drives the stirring components to form strong convection, which, combined with the auger tipping and flapping plate to prevent material accumulation, achieves uniform mixing and continuous feeding of materials.
It significantly improves the uniformity and efficiency of material mixing, avoids mixing dead zones and feeding blockages, improves production progress and equipment stability, and reduces manual maintenance costs.
Smart Images

Figure CN224675260U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plastic bag production technology, specifically a mixing device for plastic bag production. Background Technology
[0002] In the production of plastic bags, basic raw materials such as polyethylene and polypropylene need to be mixed evenly with auxiliary materials such as color masterbatch, anti-aging agents, and toughening agents in a certain proportion before they can enter the subsequent extrusion, blown film and other processes. Therefore, the mixing device is one of the indispensable key equipment on the plastic bag production line.
[0003] The existing mixing devices for plastic bag production suffer from low mixing efficiency. Traditional mixing devices often use a single mixing shaft with a mixing paddle, which can easily create dead zones in the mixing drum. Some materials cannot fully contact the mixing components, resulting in poor mixing uniformity. This requires extending the mixing time to achieve a satisfactory mixing effect, thus reducing the overall production progress. Furthermore, it can easily cause blockages in the feeding channel, which not only affects production efficiency but also requires manual shutdown for cleaning, increasing labor costs and potentially wasting raw materials. Utility Model Content
[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a mixing device for plastic bag production, which effectively solves the problems mentioned in the background.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a mixing device for producing plastic bags, comprising a mixing drum, with support legs fixedly installed at the four corners below the mixing drum, and a common base plate fixedly connected to one side of each of the four support legs. A feeding cylinder is fixedly connected to the bottom of the mixing drum, and a valve is installed inside the feeding cylinder. A mixing assembly is provided inside the mixing drum, and a feeding assembly is provided above the mixing drum.
[0006] Preferably, the stirring assembly includes a rectangular frame, which is fixedly installed on the inner wall of the stirring tank. A first rotating rod is rotatably connected inside the rectangular frame. The upper part of the first rotating rod extends through to the upper part of the stirring tank and is fixedly connected to a first bevel gear. A second bevel gear is fixedly sleeved on the outside of the first rotating rod. The lower part of the first rotating rod extends through to the lower part of the rectangular frame and is fixedly connected to an auger.
[0007] Preferably, U-shaped blocks are fixedly installed on both sides inside the rectangular frame, and a second rotating rod is rotatably connected inside the U-shaped blocks. A third bevel gear and a fourth bevel gear are fixedly installed at both ends of the second rotating rod, and the third bevel gear meshes with the second bevel gear.
[0008] Preferably, a third rotating rod is rotatably connected to both sides inside the rectangular frame, a fifth bevel gear is fixedly sleeved on the outside of the third rotating rod, the fifth bevel gear meshes with the fourth bevel gear, the lower part of the third rotating rod extends through to the lower part of the rectangular frame, and multiple stirring rods are fixedly sleeved on the outside of the third rotating rod.
[0009] Preferably, the feeding assembly includes a feeding hopper, which is fixedly connected to the top of the mixing tank. A motor is fixedly installed on one side of the feeding hopper, and a transmission rod is fixedly connected to the output end of the motor. One end of the transmission rod passes through the feeding hopper and is fixedly connected to a sixth bevel gear. The sixth bevel gear meshes with the first bevel gear. Four flaps arranged in a circular array are fixedly sleeved on the outside of the transmission rod.
[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a motor to drive a transmission rod to rotate, which in turn drives a sixth bevel gear to rotate. The sixth bevel gear, through a meshing first bevel gear, drives a first rotating rod to rotate. The first rotating rod drives a second bevel gear and an auger to rotate. The auger flips the raw material at the bottom of the mixing tank to the top. The second bevel gear, through a third bevel gear, drives a second rotating rod to rotate. The second rotating rod, through the cooperation of a fourth and fifth bevel gear, drives a third rotating rod to rotate. The third rotating rod drives a stirring rod to rotate. This can create strong convection in the mixing tank, avoiding dead zones in the mixing process, significantly improving the uniformity and efficiency of the mixing, shortening the mixing time, and improving production progress. 2. This utility model uses a motor to drive a transmission rod to rotate, which in turn drives a flap to rotate. The flap rotates inside the hopper, effectively preventing material accumulation and blockage, and ensuring the continuity of the feeding process. Attached Figure Description
[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0012] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of the stirring assembly of this utility model; Figure 4 This is a schematic diagram of the feeding assembly of this utility model; Figure 5 This is a schematic diagram of the structure of the motor of this utility model; In the diagram: 1. Mixing tank; 2. Support leg; 3. Base plate; 4. Feeding cylinder; 5. Valve; 6. Mixing assembly; 601. Rectangular frame; 602. First rotating rod; 603. First bevel gear; 604. Second bevel gear; 605. Screwdriver; 606. U-shaped block; 607. Second rotating rod; 608. Third bevel gear; 609. Fourth bevel gear; 610. Third rotating rod; 611. Mixing rod; 612. Fifth bevel gear; 7. Feeding assembly; 701. Feeding hopper; 702. Motor; 703. Transmission rod; 704. Flip plate; 705. Sixth bevel gear. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. 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.
[0014] Example 1, by Figures 1-5 This utility model relates to a mixing device for plastic bag production, including a mixing tank 1. Support legs 2 are fixedly installed at the four corners of the mixing tank 1. The same base plate 3 is fixedly connected to one side of the four support legs 2. The support legs 2 can fix and support the mixing tank 1, improving the stability of the device. The base plate 3 can fix the support legs 2, making it convenient to place containers. A feeding cylinder 4 is fixedly connected to the bottom of the mixing tank 1. A valve 5 is installed inside the feeding cylinder 4. The opening and closing of the feeding cylinder 4 can be controlled by the valve 5. A mixing component 6 is provided inside the mixing tank 1, and a feeding component 7 is provided above the mixing tank 1.
[0015] The mixing assembly 6 includes a rectangular frame 601, which is fixedly installed on the inner wall of the mixing tank 1. A first rotating rod 602 is rotatably connected inside the rectangular frame 601. The upper part of the first rotating rod 602 extends through to the upper part of the mixing tank 1 and is fixedly connected to a first bevel gear 603. A second bevel gear 604 is fixedly sleeved on the outside of the first rotating rod 602. The lower part of the first rotating rod 602 extends through to the lower part of the rectangular frame 601 and is fixedly connected to an auger 605. Through the auger 605, the raw materials at the bottom of the mixing tank 1 can be turned to the top. U-shaped blocks 606 are fixedly installed on both sides inside the rectangular frame 601. A second rotating rod 607 is rotatably connected inside the U-shaped blocks 606. Through the U-shaped blocks 606, the raw materials at the bottom of the mixing tank 1 can be turned to the top. The rotation of the second rotating rod 607 improves its rotational stability. A third bevel gear 608 and a fourth bevel gear 609 are fixedly installed at both ends of the second rotating rod 607, respectively. The third bevel gear 608 meshes with the second bevel gear 604. A third rotating rod 610 is rotatably connected to both sides of the interior of the rectangular frame 601. A fifth bevel gear 612 is fixedly sleeved on the outside of the third rotating rod 610, meshing with the fourth bevel gear 609. The lower part of the third rotating rod 610 extends through to the lower part of the rectangular frame 601. Multiple stirring rods 611 are fixedly sleeved on the outside of the third rotating rod 610. The stirring efficiency is improved through the cooperation of the multiple stirring rods 611 and the auger 605.
[0016] The feeding assembly 7 includes a feeding hopper 701, which is fixedly connected to the top of the mixing tank 1. A motor 702 is fixedly installed on one side of the feeding hopper 701. A transmission rod 703 is fixedly connected to the output end of the motor 702. One end of the transmission rod 703 passes through the feeding hopper 701 and is fixedly connected to a sixth bevel gear 705. The sixth bevel gear 705 meshes with the first bevel gear 603. Four flaps 704 arranged in a circular array are fixedly sleeved on the outside of the transmission rod 703. The transmission rod 703 is driven to rotate by the motor 702, and the transmission rod 703 drives the flaps 704 to rotate, which can prevent the feeding hopper 701 from being blocked by materials.
[0017] Working principle: During operation, the motor 702 drives the transmission rod 703 to rotate, which in turn drives the sixth bevel gear 705 to rotate. The sixth bevel gear 705, through its meshing with the first bevel gear 603, drives the first rotating rod 602 to rotate. The first rotating rod 602 drives the second bevel gear 604 and the auger 605 to rotate. The auger 605 flips the raw material at the bottom of the mixing tank 1 to the top. The second bevel gear 604, through the third bevel gear 608, drives the second rotating rod 607 to rotate. The second rotating rod 607, through the engagement of the fourth bevel gear 609 and the fifth bevel gear 612, drives the third rotating rod 610 to rotate. The third rotating rod 610 drives the stirring rod 611 to rotate, which can create strong convection of materials in the mixing tank 1, avoiding dead zones in the mixing. At the same time, the transmission rod 703 drives the flap 704 to rotate. The flap 704 rotates inside the feeding hopper 701, effectively preventing material accumulation and blockage.
Claims
1. A mixing device for producing plastic bags, comprising a mixing tank (1), characterized in that: Support legs (2) are fixedly installed at the four corners of the mixing tank (1). The same base plate (3) is fixedly connected to one side of the four support legs (2). A feeding cylinder (4) is fixedly connected to the bottom of the mixing tank (1). A valve (5) is installed inside the feeding cylinder (4). A mixing assembly (6) is installed inside the mixing tank (1). A feeding assembly (7) is installed above the mixing tank (1).
2. The mixing device for plastic bag production according to claim 1, characterized in that: The stirring assembly (6) includes a rectangular frame (601), which is fixedly installed on the inner wall of the stirring tank (1). A first rotating rod (602) is rotatably connected inside the rectangular frame (601). The upper part of the first rotating rod (602) extends through to the upper part of the stirring tank (1) and is fixedly connected to a first bevel gear (603). A second bevel gear (604) is fixedly sleeved on the outside of the first rotating rod (602). The lower part of the first rotating rod (602) extends through to the lower part of the rectangular frame (601) and is fixedly connected to an auger (605).
3. The mixing device for plastic bag production according to claim 2, characterized in that: U-shaped blocks (606) are fixedly installed on both sides inside the rectangular frame (601). A second rotating rod (607) is rotatably connected inside the U-shaped block (606). A third bevel gear (608) and a fourth bevel gear (609) are fixedly installed at both ends of the second rotating rod (607). The third bevel gear (608) meshes with the second bevel gear (604).
4. The mixing device for producing plastic bags according to claim 2, characterized in that: The rectangular frame (601) has a third rotating rod (610) rotatably connected to both sides inside. The third rotating rod (610) is fixedly fitted with a fifth bevel gear (612). The fifth bevel gear (612) meshes with the fourth bevel gear (609). The lower part of the third rotating rod (610) extends through to the lower part of the rectangular frame (601). The third rotating rod (610) is fixedly fitted with multiple stirring rods (611).
5. The mixing device for plastic bag production according to claim 1, characterized in that: The feeding assembly (7) includes a feeding hopper (701), which is fixedly connected above the mixing tank (1). A motor (702) is fixedly installed on one side of the feeding hopper (701). A transmission rod (703) is fixedly connected to the output end of the motor (702). One end of the transmission rod (703) passes through the feeding hopper (701) and is fixedly connected to a sixth bevel gear (705). The sixth bevel gear (705) meshes with the first bevel gear (603). Four flaps (704) arranged in a ring array are fixedly sleeved on the outside of the transmission rod (703).