A heat-seal embossing device for a multi-layer composite plastic bag

Abstract

The utility model discloses a kind of heat-seal embossing device of multilayer composite plastic bag, it is related to plastic processing machinery equipment technical field;And the utility model includes upper die assembly, upper die assembly includes rack, electric cylinder is arranged in the top surface middle part of rack, the output shaft end of electric cylinder is fixedly connected with lifting plate, the bottom surface of lifting plate is provided with heat-seal knife, the side wall of lifting plate is fixedly connected with connecting plate, the bottom surface of connecting plate is fixedly connected with protruding rod, the bottom surface of connecting plate is provided with embossing plate, the top surface of embossing plate is fixedly connected with cylinder, protruding rod is located in cylinder, and protruding rod and cylinder are slidably connected, the side wall of protruding rod is equipped with spring, the below of upper die assembly is provided with lower die holder, lower die holder includes first lower die plate and second lower die plate, the top surface of first lower die plate is provided with embossing groove;The utility model, with good integration and high efficiency, and can ensure product consistency, and reduce energy consumption and factory space occupation.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing machinery and equipment technology, specifically to a heat-sealing and embossing device for multi-layer composite plastic bags. Background Technology

[0002] Multi-layer composite plastic bags are widely used in the packaging of food, daily chemicals, and industrial products due to their excellent barrier properties, strength, and aesthetics. In their production process, heat sealing and embossing are two key steps. Heat sealing ensures the bag opening is airtight, while embossing, such as pressing out brand logos, patterns, and anti-counterfeiting marks, enhances the product's appearance and anti-counterfeiting capabilities. Currently, most production lines use two independent machines to complete these two processes, either heat sealing followed by embossing or embossing followed by heat sealing. This method has the following drawbacks: First, low production efficiency, as products need to be transferred between the two machines, increasing production cycle time; second, poor positioning accuracy, as cumulative errors from two positioning operations can lead to inaccurate relative positions between the embossed pattern and the heat-sealed edge; and third, large equipment footprint, requiring more factory space for the two machines and the intermediate conveyor system, and the independent operation of multiple machines also increases overall energy consumption. To address these issues, the inventor proposes a heat-sealing and embossing device for multi-layer composite plastic bags. Utility Model Content

[0003] To address the problems of low production efficiency, accuracy errors, and high space and energy consumption in the current heat-sealing and embossing process for multi-layer composite plastic bags, the purpose of this utility model is to provide a heat-sealing and embossing device for multi-layer composite plastic bags.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a heat-sealing and embossing device for multi-layer composite plastic bags, comprising an upper mold assembly, the upper mold assembly comprising a frame, an electric cylinder being inserted into the center of the top surface of the frame, a lifting plate being fixedly connected to the output shaft end of the electric cylinder, a heat-sealing knife being provided on the bottom surface of the lifting plate, a connecting plate being fixedly connected to the side wall of the lifting plate, a protruding rod being fixedly connected to the bottom surface of the connecting plate, an embossing plate being provided directly below the connecting plate, a cylinder being fixedly connected to the top surface of the embossing plate, the protruding rod being located inside the cylinder and slidably connected to the cylinder, a spring being sleeved on the side wall of the protruding rod, a lower mold base being provided below the upper mold assembly, the lower mold base comprising a first lower template and a second lower template, an embossing groove being provided on the top surface of the first lower template, and a lower heat-sealing pad being provided on the top surface of the second lower template.

[0005] Preferably, the electric cylinder has a base on its side wall, which is fixedly connected to the side wall of the frame. Guide rods are fixedly connected to both sides of the top surface of the lifting plate, passing through the bracket and slidably connected to it. The electric cylinder is mounted on the base. When the electric cylinder is activated, the lifting plate can move vertically under the action of the output shaft. With the cooperation of the guide rods, the vertical movement of the lifting plate is made more stable. The top end of the spring is fixedly connected to the bottom surface of the connecting plate, and the bottom end of the spring is fixedly connected to the top surface of the cylinder. A limiting plate is fixedly connected to the bottom end of the protruding rod. The limiting plate is located inside the cylinder opening, and the limiting plate is aligned with the cylinder opening. The sliding connection is used, and the diameter of the limiting plate is larger than the diameter of the protruding rod. During operation, the electric cylinder is driven to press down the lifting plate. First, with the cooperation of the spring, the protruding rod, and the cylinder, the embossing plate can be moved down through the connecting plate to contact the pre-pressed plastic bag film. Then, the lifting plate continues to descend, the spring is compressed, so that the embossing punch on the embossing plate cooperates with the embossing groove to press a preset pattern on the bag. Subsequently, the lifting plate continues to descend, the spring is compressed again, the heat sealing knife contacts the bag, and with the cooperation of the lower heat sealing pad, and under the action of heat and pressure, the heat sealing is completed. Then, after a short period of pressure holding, the electric cylinder is driven to drive the lifting plate to rise again for the next heat sealing and embossing operation.

[0006] Preferably, the embossing plate includes an embossing punch, and the embossing groove corresponds to and cooperates with the embossing punch. The embossing punch in this device is only a schematic diagram, and its specific pattern can be changed according to requirements. For example, the preset pattern can be a brand logo, pattern, anti-counterfeiting mark, etc. The embossing groove is made of high-temperature resistant silicone or elastic engineering plastic, which has a certain elastic deformation ability to ensure clear embossing and protect the embossing punch, reducing the impact and wear on the hard embossing punch. The lower heat sealing pad corresponds to and cooperates with the heat sealing knife. The top surfaces of the first lower template and the second lower template are flush. The lower heat sealing pad can be made of polytetrafluoroethylene or silicone. The lower heat sealing pad can cooperate with the heat sealing knife to perform heat sealing operation on the bag opening. The two sides of the frame are fixedly connected with brackets. The bottom surface of the bracket is fixedly connected to the outer side wall of the lower mold base. The bracket is used to support and fix the frame.

[0007] Compared with the prior art, the advantages of this utility model are as follows: it has better integration and efficiency, and can integrate heat sealing and embossing functions into a set of molds, completing the two processes simultaneously in one stamping stroke, thereby improving production efficiency and shortening the production cycle. Since heat sealing and embossing are completed in one positioning, the error caused by the separate positioning of the existing heat sealing and embossing processes can be eliminated, ensuring the relative positional accuracy of the embossed pattern and the heat-sealed edge, ensuring product consistency. Furthermore, the heat sealing and embossing processes can be completed with one machine, thereby reducing equipment investment, energy consumption, and factory space occupation. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is another structural schematic diagram of the present utility model.

[0011] Figure 3 This is a schematic diagram of the lower mold base structure of this utility model.

[0012] Figure 4 This is a schematic diagram of the frame structure of this utility model.

[0013] In the diagram: 1. Upper mold assembly; 2. Frame; 3. Support; 4. Electric cylinder; 5. Lifting plate; 6. Guide rod; 7. Heat sealing knife; 8. Connecting plate; 9. Protruding rod; 10. Spring; 11. Cylinder; 12. Embossing plate; 13. Embossing punch; 14. Lower mold base; 15. First lower template; 16. Embossing groove; 17. Second lower template; 18. Lower heat sealing pad. Detailed Implementation

[0014] 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.

[0015] Example: Figure 1-4As shown, this utility model provides a heat-sealing and embossing device for multi-layer composite plastic bags, including an upper mold assembly 1. The upper mold assembly 1 includes a frame 2. An electric cylinder 4 is inserted through the middle of the top surface of the frame 2. A lifting plate 5 is fixedly connected to the output shaft end of the electric cylinder 4. A heat-sealing knife 7 is provided on the bottom surface of the lifting plate 5. A connecting plate 8 is fixedly connected to the side wall of the lifting plate 5. A protruding rod 9 is fixedly connected to the bottom surface of the connecting plate 8. An embossing plate 12 is provided directly below the connecting plate 8. A cylinder 11 is fixedly connected to the top surface of the embossing plate 12. The protruding rod 9 is located inside the cylinder 11 and is slidably connected to the cylinder 11. A spring 10 is sleeved on the side wall of the protruding rod 9. A lower mold base 14 is provided below the upper mold assembly 1. The lower mold base 14 includes a first lower template 15 and a second lower template 17. An embossing groove 16 is provided on the top surface of the first lower template 15. A lower heat-sealing pad 18 is provided on the top surface of the second lower template 17.

[0016] The electric cylinder 4 has a base on its side wall, which is fixedly connected to the side wall of the frame 2. Guide rods 6 are fixedly connected to both sides of the top surface of the lifting plate 5. The guide rods 6 pass through the bracket 3 and are slidably connected to the bracket 3.

[0017] By adopting the above technical solution, the electric cylinder 4 is installed on the base. When the electric cylinder 4 is started, the lifting plate 5 can move vertically under the action of the output shaft of the electric cylinder 4. With the cooperation of the guide rod 6, the vertical movement of the lifting plate 5 can be made more stable.

[0018] The top end of the spring 10 is fixedly connected to the bottom surface of the connecting plate 8, the bottom end of the spring 10 is fixedly connected to the top surface of the cylinder 11, and the bottom end of the protruding rod 9 is fixedly connected to a limiting plate. The limiting plate is located inside the opening of the cylinder 11 and is slidably connected to the opening of the cylinder 11. The diameter of the limiting plate is larger than the diameter of the protruding rod 9.

[0019] By adopting the above technical solution, during operation, the electric cylinder 4 drives the lifting plate 5 to press down. First, with the cooperation of the spring 10 and the convex rod 9 with the cylinder 11, the embossing plate 12 can be moved down through the connecting plate 8 to contact the pre-pressed plastic bag film. Then, the lifting plate 5 continues to descend, the spring 10 is compressed, so that the embossing punch 13 on the embossing plate 12 cooperates with the embossing groove 16 to press out the preset pattern on the bag. Subsequently, the lifting plate 5 continues to descend, the spring 10 is compressed again, the heat sealing knife 7 contacts the bag, and with the cooperation of the lower heat sealing pad 18, and under the action of heat and pressure, the heat sealing is completed. Then, after a short period of pressure holding, the electric cylinder 4 drives the lifting plate 5 to rise again to perform the next heat sealing and embossing operation.

[0020] The embossed plate 12 includes an embossing punch 13, and an embossing groove 16 that corresponds to and cooperates with the embossing punch 13.

[0021] By adopting the above technical solution, the embossing punch 13 in this device is only a schematic diagram. Its specific pattern can be changed according to the requirements. For example, the preset pattern can be a brand logo, pattern, anti-counterfeiting mark, etc. The embossing groove 16 is made of high temperature resistant silicone or elastic engineering plastic, which has a certain elastic deformation ability to ensure clear embossing and protect the embossing punch 13, and reduce the impact and wear on the hard embossing punch 13.

[0022] The lower heat sealing pad 18 corresponds to and cooperates with the heat sealing knife 7, and the top surfaces of the first lower template 15 and the second lower template 17 are flush.

[0023] By adopting the above technical solution, the lower heat-sealing pad 18 can be made of polytetrafluoroethylene or silicone. The lower heat-sealing pad 18 can be used in conjunction with the heat-sealing knife 7 to perform heat-sealing operations on the bag opening.

[0024] Both sides of the frame 2 are fixedly connected to the brackets 3, and the bottom surface of the brackets 3 is fixedly connected to the outer wall of the lower mold base 14.

[0025] By adopting the above technical solution, the bracket 3 is used to support and fix the frame 2.

[0026] Working principle: When this utility model is in use, the electric cylinder 4 is driven, and the lifting plate 5 can be pressed vertically downward under the action of the output shaft of the electric cylinder 4. With the cooperation of the guide rod 6, the vertical downward pressing of the lifting plate 5 can be made more stable.

[0027] When the lifting plate 5 is pressed down, the spring 10 and the protruding rod 9 cooperate with the cylinder 11, and the connecting plate 8 can make the embossing plate 12 move down to contact the plastic bag film to be pre-pressed and heat-sealed. Then, the lifting plate 5 continues to move down, the spring 10 is compressed, so that the embossing punch 13 on the embossing plate 12 cooperates with the embossing groove 16 to press out the preset pattern on the bag.

[0028] Subsequently, the lifting plate 5 continues to descend, the spring 10 is compressed again, the heat sealing knife 7 contacts the bag, and with the cooperation of the lower heat sealing pad 18, and under the action of heat and pressure, the heat sealing operation can be completed;

[0029] Next, after a short period of pressure holding, the electric cylinder 4 drives the lifting plate 5 to rise, so that the heat sealing knife 7 and the embossing die 13 are separated from the plastic bag one by one, so as to carry out the next heat sealing and embossing operation.

[0030] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0031] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A heat-sealing and embossing device for a multi-layer composite plastic bag, comprising an upper mold assembly (1), characterized in that: The upper mold assembly (1) includes a frame (2), an electric cylinder (4) is inserted through the center of the top surface of the frame (2), a lifting plate (5) is fixedly connected to the output shaft end of the electric cylinder (4), a heat sealing knife (7) is provided on the bottom surface of the lifting plate (5), a connecting plate (8) is fixedly connected to the side wall of the lifting plate (5), a protruding rod (9) is fixedly connected to the bottom surface of the connecting plate (8), an embossing plate (12) is provided directly below the connecting plate (8), and the top surface of the embossing plate (12) is fixedly connected to... There is a cylindrical body (11), the protruding rod (9) is located inside the cylindrical body (11), and the protruding rod (9) is slidably connected to the cylindrical body (11). A spring (10) is sleeved on the side wall of the protruding rod (9). A lower mold base (14) is provided below the upper mold assembly (1). The lower mold base (14) includes a first lower template (15) and a second lower template (17). The top surface of the first lower template (15) is provided with an embossed groove (16), and the top surface of the second lower template (17) is provided with a lower heat sealing gasket (18).

2. The heat-sealing and embossing device for a multi-layer composite plastic bag as described in claim 1, characterized in that, The electric cylinder (4) has a base on its side wall, and the base is fixedly connected to the side wall of the frame (2).

3. The heat-sealing and embossing device for a multi-layer composite plastic bag as described in claim 1, characterized in that, Guide rods (6) are fixedly connected to both sides of the top surface of the lifting plate (5). The guide rods (6) pass through the bracket (3) and are slidably connected to the bracket (3).

4. The heat-sealing and embossing device for a multi-layer composite plastic bag as described in claim 1, characterized in that, The top end of the spring (10) is fixedly connected to the bottom surface of the connecting plate (8), and the bottom end of the spring (10) is fixedly connected to the top surface of the cylinder (11).

5. The heat-sealing and embossing device for a multi-layer composite plastic bag as described in claim 1, characterized in that, The bottom end of the protruding rod (9) is fixedly connected to a limiting plate. The limiting plate is located inside the opening of the cylinder (11), and the limiting plate is slidably connected to the opening of the cylinder (11). The diameter of the limiting plate is larger than the diameter of the protruding rod (9).

6. The heat-sealing and embossing device for a multi-layer composite plastic bag as described in claim 1, characterized in that, The embossed plate (12) includes an embossing punch (13), and the embossing groove (16) corresponds to and cooperates with the embossing punch (13).

7. The heat-sealing and embossing device for a multi-layer composite plastic bag as described in claim 1, characterized in that, The lower heat sealing pad (18) corresponds to and cooperates with the heat sealing knife (7), and the top surfaces of the first lower template (15) and the second lower template (17) are flush.

8. The heat-sealing and embossing device for a multi-layer composite plastic bag as described in claim 1, characterized in that, The frame (2) is fixedly connected to two sides of a bracket (3), and the bottom surface of the bracket (3) is fixedly connected to the outer wall of the lower mold base (14).

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