A composite packaging bag making apparatus
By combining the design of the pressing roller, the feeding hopper and the coating mechanism, the problems of uneven coating distribution and waste are solved, and efficient and uniform coating and clean production of composite packaging bags are achieved, thereby improving coating quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU BOLI PLASTIC COLOR PRINTING & PACKING CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional coating methods for composite packaging bags suffer from uneven coating distribution, significant waste, and difficulties in cleaning and maintenance, which affect the production quality and efficiency of the packaging bags.
The design employs a combination of pressing rollers, feeding hoppers, and coating mechanisms. By using a sponge block to closely adhere to the pressing rollers, uniform coating of paint is achieved. Excess paint is collected through a receiving hole and a discharge plate. Combined with the distribution pipe structure of the feeding component, this ensures uniform paint distribution and the recycling of wasted paint.
It improves coating uniformity and adhesion, reduces paint waste, keeps the production environment clean, and enhances coating quality and production efficiency.
Smart Images

Figure CN224405601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bag making technology, and in particular to a composite packaging bag making device. Background Technology
[0002] In the packaging bag manufacturing industry, composite packaging bags are widely used in the food, pharmaceutical, and chemical industries due to their excellent barrier properties, mechanical strength, and durability. The production of composite packaging bags typically involves multi-layer material lamination, bag making, coating, and other functional treatments.
[0003] Traditional composite packaging bags are coated with composite coatings by direct spraying or roller coating. However, spraying can cause paint to splatter and affect other areas of the equipment, while existing roller coating directly drips the paint onto the roller, resulting in uneven paint distribution, serious waste, and difficulty in cleaning and maintenance. This affects the uniformity of the coating on the bag surface during bag making and also causes paint waste. Utility Model Content
[0004] The purpose of this invention is to provide a composite packaging bag making device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite packaging bag making device, comprising:
[0006] Bag making machine;
[0007] A fixing frame, which is fixed to the middle of the bag-making machine;
[0008] The pressing roller is rotatably mounted in the inner cavity of the fixed frame relative to the two pressing rollers;
[0009] Feed hoppers, multiple of which are fixed to the top of the fixed frame;
[0010] A coating mechanism is disposed on the outer wall of the pressing roller, and the coating mechanism is used to coat the composite coating on the surface of the bag.
[0011] Preferably, a hair dryer is installed on both sides of the fixing frame, and a collection box is provided at the bottom of the fixing frame.
[0012] Preferably, the coating mechanism includes:
[0013] A fixing box is disposed on the side of the pressing roller;
[0014] The feeding port is located on the side of the fixed box near the pressing roller;
[0015] A sponge block, the sponge block being fixed to the inner wall of the fixing box, and the outer wall of the sponge block being in contact with the outer wall of the pressing roller;
[0016] A receiving hole is provided below the discharge port;
[0017] A feeding plate, which is installed at the bottom of the receiving hole;
[0018] The discharge pipe is fixedly inserted into the bottom of the fixed box;
[0019] A feeding assembly is installed between the fixed box and the feeding hopper.
[0020] Preferably, the sponge block is disposed in the inner cavity of the feeding port, and the receiving hole is opened on the side of the fixing box near the pressing roller.
[0021] Preferably, the feeding plate is fixed to the inner wall of the fixed box with a downward slope, and the bottom of the discharge pipe is threaded with a sealing head.
[0022] Preferably, the feeding assembly includes:
[0023] A feed pipe, which is fixedly inserted between the feed hopper and the fixed box;
[0024] A connecting pipe, which is fixed to the inner wall of the fixed box;
[0025] The distributing pipes are fixed at equal intervals at the bottom of the connecting pipe. The distributing pipes are used to supply composite coatings to different areas of the sponge block.
[0026] The technical effects and advantages of this utility model are as follows:
[0027] This invention utilizes a combination of a pressing roller, a feeding hopper, and a coating mechanism. By tightly adhering a sponge block to the pressing roller, the composite coating is evenly applied to the bag surface, improving the uniformity and adhesion of the coating. This results in a uniform coating effect and efficient bag transfer and coating. The inclusion of a receiving hole, a discharge plate, and a collection box allows for the recovery of excess coating from the pressing roller and sponge block, preventing coating drips from contaminating the equipment, reducing raw material waste, and maintaining a clean production environment. The feeding assembly and sponge block facilitate even distribution of coating onto the pressing roller, ensuring consistent coating thickness and improving coating quality. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0029] Figure 2 This is a partial cross-sectional view of the overall front of this utility model.
[0030] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.
[0031] In the diagram: 1. Bag making machine; 2. Fixed frame; 3. Pressing roller; 4. Feed hopper; 5. Coating mechanism; 51. Fixed box; 52. Discharge port; 53. Sponge block; 54. Collection hole; 55. Discharge plate; 56. Discharge pipe; 57. Feeding assembly; 571. Feeding pipe; 572. Connecting pipe; 573. Distributing pipe; 6. Blower; 7. Collection box. Detailed Implementation
[0032] 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.
[0033] This utility model provides, for example Figure 1-3 The composite packaging bag making device shown includes a bag making machine 1, a fixed frame 2, pressing rollers 3, feeding hoppers 4, and a coating mechanism 5. The fixed frame 2 is fixed in the middle of the bag making machine 1. The fixed frame 2 is an inverted U-shaped frame structure fixed to the top of the bag making machine 1. The two pressing rollers 3 are rotatably installed in the inner cavity of the fixed frame 2. The bag body is pressed between the two pressing rollers 3. One end of the two pressing rollers 3 is driven by a gear to rotate relative to each other, which facilitates the transfer and movement of the bag body. The outer wall of the pressing roller 3 is made of rubber, which facilitates the adhesion of the composite coating to the pressing roller 3 and to the upper and lower surfaces of the bag body. Multiple feeding hoppers 4 are fixed to the top of the fixed frame 2. The feeding hoppers 4 are used for feeding the composite coating. The coating mechanism 5 is set on the outer wall of the pressing roller 3. The coating mechanism 5 is used for coating the composite coating on the surface of the bag body, which facilitates the coating of the composite coating onto the pressing roller 3.
[0034] Meanwhile, blowers 6 are installed on both sides of the fixed frame 2 to facilitate the cooling of the surface of the bag after it has been made, thereby improving the adhesion efficiency of the composite coating, accelerating the cooling and curing of the coating on the bag surface, improving production efficiency, and enhancing the adhesion effect of the coating. A collection box 7 is set at the bottom of the fixed frame 2. The collection box 7 is located at the bottom of the pressing roller 3 to facilitate the collection of residual composite coating that falls from the bottom of the pressing roller 3, preventing the composite coating from falling randomly and affecting the cleanliness of the device.
[0035] The coating mechanism 5 includes a fixed box 51, a feeding port 52, a sponge block 53, a receiving hole 54, a feeding plate 55, a discharge pipe 56, and a feeding assembly 57. The fixed box 51 is located on the side of the pressing roller 3, and the side of the fixed box 51 has an arc-shaped structure that matches the outer wall of the pressing roller 3. The feeding port 52 is located on the side of the fixed box 51 near the pressing roller 3. The sponge block 53 is fixed to the inner wall of the fixed box 51, and the outer wall of the sponge block 53 is in contact with the outer wall of the pressing roller 3. The sponge block 53 is located in the inner cavity of the feeding port 52. Through the contact between the sponge block 53 and the outer wall of the pressing roller 3, the composite coating on the sponge block 53 is coated onto the outer wall of the pressing roller 3. Then, through the contact between the outer wall of the pressing roller 3 and the outer wall of the bag, the composite coating can be coated onto the bag. On the surface of the body, the receiving hole 54 is opened below the discharge port 52. The receiving hole 54 is opened on the side of the fixed box 51 near the pressing roller 3. The discharge plate 55 is installed at the bottom of the receiving hole 54. The discharge plate 55 is fixed to the inner wall of the fixed box 51 with a downward slope. Through the setting of the discharge plate 55 and the receiving hole 54, when the paint on the pressing roller 3 with excess paint adhering on the sponge block 53 moves to the inner cavity of the receiving hole 54, the excess paint can fall through the receiving hole 54 onto the discharge plate 55 and then be collected by the fixed box 51. The bottom of the discharge pipe 56 is threaded with a sealing head. The discharge pipe 56 is fixedly inserted into the bottom of the fixed box 51, so that excess paint can be discharged through the discharge pipe 56, avoiding the phenomenon of paint overflow in the inner cavity of the fixed box 51.
[0036] Furthermore, the feeding assembly 57 is installed between the fixed box 51 and the feeding hopper 4. The feeding assembly 57 includes a feeding pipe 571, a connecting pipe 572, and a distributing pipe 573. The feeding pipe 571 is fixedly inserted between the feeding hopper 4 and the fixed box 51. The connecting pipe 572 is fixed to the inner wall of the fixed box 51. Multiple distributing pipes 573 are equidistantly fixed at the bottom of the connecting pipe 572. The distributing pipes 573 are used to supply composite coatings to different areas of the sponge block 53. The composite coatings entering from the inner cavity of the feeding hopper 4 can enter the inner cavity of the connecting pipe 572 through the feeding pipe 571 and be evenly distributed on the sponge block 53 through the distributing pipes 573, thereby improving the stability of the composite coating on the bag body. The feeding assembly 57 adopts the distributing pipe 573 structure to evenly distribute the coating to different areas of the sponge block 53, ensuring consistent coating thickness and improving the stability of coating quality.
[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A composite packaging bag making apparatus, characterized in that, include: Bag making machine (1); A fixed frame (2) is fixed to the middle of the bag making machine (1); The pressing roller (3) is rotatably mounted in the inner cavity of the fixed frame (2) relative to the two pressing rollers (3); Feed hoppers (4), multiple feed hoppers (4) are fixed to the top of the fixed frame (2); The coating mechanism (5) is located on the outer wall of the pressing roller (3) and is used to coat the composite coating on the surface of the bag.
2. The composite packaging bag making device according to claim 1, characterized in that, A blower (6) is installed on both sides of the fixed frame (2), and a collection box (7) is provided at the bottom of the fixed frame (2).
3. The composite packaging bag making device according to claim 1, characterized in that, The coating mechanism (5) includes: A fixing box (51) is disposed on the side of the pressing roller (3); The discharge port (52) is located on the side of the fixed box (51) near the pressing roller (3); Sponge block (53), the sponge block (53) is fixed to the inner wall of the fixing box (51), and the outer wall of the sponge block (53) is in contact with the outer wall of the pressing roller (3); The receiving hole (54) is located below the discharge port (52); The feeding plate (55) is installed at the bottom of the receiving hole (54); The discharge pipe (56) is fixedly inserted into the bottom of the fixed box (51); Feeding assembly (57) is installed between the fixed box (51) and the feed hopper (4).
4. The composite packaging bag making apparatus according to claim 3, characterized in that, The sponge block (53) is located in the inner cavity of the feeding port (52), and the receiving hole (54) is located on the side of the fixing box (51) near the pressing roller (3).
5. A composite packaging bag making apparatus according to claim 3, characterized in that, The feeding plate (55) is fixed to the inner wall of the fixed box (51) with a downward slope, and the bottom of the discharge pipe (56) is threaded with a sealing head.
6. The composite packaging bag making apparatus according to claim 3, characterized in that, The feeding assembly (57) includes: Feed pipe (571), which is fixedly inserted between feed hopper (4) and fixed box (51); A connecting pipe (572) is fixed to the inner wall of the fixing box (51); Distributing pipes (573), multiple distributing pipes (573) are fixed at equal intervals to the bottom of the connecting pipe (572), the distributing pipes (573) are used to supply composite coatings to different areas of the sponge block (53).