Packaging bag edge pressing device with good compaction effect

Abstract

The utility model relates to the technical field of packaging bag production equipment, in particular to a packaging bag edge pressing device with a good compaction effect, which comprises two side plates arranged in bilateral symmetry, two first crimping rollers are rotatably connected to the tops of the two side plates in a front-back symmetry manner, and a second crimping roller is rotatably connected to the middle part between the two side plates; according to the multi-point hot-pressing edge sealing device, the hot-pressing mechanism and the crimping rollers are used in cooperation, hot-pressing edge sealing of a packaging bag is achieved, the number of the crimping rollers is three, therefore, the number of hot-pressing contact points of the hot-pressing mechanism and the packaging bag is three, multi-point hot-pressing edge sealing is achieved, the compaction effect is good, the production efficiency is high, and the production cost is low. And through the arrangement of the flattening mechanism, the packaging bag subjected to hot-pressing edge sealing is flattened, the wrinkling condition is avoided, cooling water is conveyed into the pressing plate through the water pump, and the hot-pressed packaging bag is rapidly cooled through the cooling water.

Description

Technical Field

[0001] This utility model belongs to the technical field of packaging bag production equipment, specifically relating to a packaging bag edge pressing device with good compaction effect. Background Technology

[0002] A packaging bag edge sealing device is a piece of equipment used in the manufacturing process of packaging materials such as plastic bags and paper bags. It is mainly used to seal and reinforce the edges of packaging bags. This device can ensure that the packaging bag will not easily break or leak after being filled with goods, thereby ensuring the quality of packaging and the safety of products.

[0003] The existing method generally involves two heated rollers pressing the edges of the plastic packaging bag together. The heat from the rollers softens and bonds the edges of the packaging material, achieving heat sealing. However, in existing equipment, there is usually only one contact point between the heated roller and the packaging material. The contact time is short, the compaction effect is poor, and after the material is heated, softened, and bonded together, wrinkles are likely to occur at the edges, affecting the edge pressing effect. Utility Model Content

[0004] The purpose of this utility model is to provide a packaging bag edge pressing device with a simple structure and reasonable design that has a good compaction effect in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A packaging bag edge-pressing device with good compaction effect includes two side plates symmetrically arranged on the left and right. Two No. 1 pressing rollers are symmetrically rotatably connected to the top of the two side plates, and a No. 2 pressing roller is rotatably connected to the middle of the two side plates. Two guide rollers are symmetrically rotatably connected to the bottom of the two side plates. The packaging bag is conveyed from front to back, passing around the No. 1 pressing roller, the guide roller and the No. 2 pressing roller in sequence. A hot pressing mechanism for hot pressing the packaging bag is provided on the top of the two side plates, and a flattening mechanism is provided on both side plates.

[0007] Preferably, the hot pressing mechanism includes a gantry frame that is fixedly connected to the top of the two side plates. A hydraulic cylinder is fixedly installed at the center of the top surface inside the gantry frame. A lifting plate is fixedly installed at the bottom of the output end of the hydraulic cylinder. Two support legs are fixedly installed symmetrically at the bottom of the two side plates.

[0008] Preferably, the bottom of the lifting plate is symmetrically and fixedly connected to two heating heads, and each heating head is rotatably connected to a roller at its bottom.

[0009] Preferably, the flattening mechanism includes a water storage tank and four flattening components arranged in a rectangular shape. The four flattening components are arranged in pairs and symmetrically front and back. Each flattening component includes a fixing plate fixedly connected to a side plate. An installation plate is fixedly installed on the side of the fixing plate away from the side plate. Two guide rods slide symmetrically through the installation plate. A pressure plate is fixedly installed on the end of the two guide rods near the packaging bag. The two pressure plates are respectively attached to the upper and lower surfaces of the packaging bag.

[0010] Preferably, a spring is sleeved in the middle of the guide rod, the spring is disposed between the pressure plate and the mounting plate, a limit ring is fixedly sleeved at the end of the guide rod away from the pressure plate, the limit ring is in contact with the mounting plate, and guide arc plates are fixedly installed on both sides of the pressure plate.

[0011] Preferably, a first-order diversion hose and a second-order diversion hose are fixedly installed between the two pressure plates in the same group. A connecting hose is fixedly connected between two adjacent second-order diversion hoses. An inlet hose is fixedly installed on the first-order diversion hose located on the front side. A water pump is fixedly installed after the bottom of the first-order diversion hose passes through the top of the water storage tank. The water pump is fixedly installed on the bottom surface inside the water storage tank. A return hose is fixedly installed on the first-order diversion hose located on the rear side. The bottom of the return hose passes through the top of the water storage tank.

[0012] The beneficial effects of this utility model are as follows: This utility model achieves hot-press sealing of packaging bags by using a combination of a hot-pressing mechanism and pressing rollers. There are three pressing rollers, so there are three hot-pressing contact points between the hot-pressing mechanism and the packaging bag, achieving multi-point hot-press sealing with good compaction effect. Furthermore, the flattening mechanism flattens the packaging bag after hot-press sealing, avoiding wrinkling. Additionally, a water pump is used to deliver cooling water to the pressing plate, which rapidly cools the hot-pressed packaging bag. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0014] Figure 2 This is a partial sectional view of the overall structure of this utility model;

[0015] Figure 3 This is a perspective view of the side plate, the first pressing roller, the hot pressing mechanism, and the second pressing roller of this utility model.

[0016] Figure 4 This is a partial sectional perspective view of the flattening mechanism of this utility model.

[0017] In the diagram: 1. Side plate; 2. No. 1 pressing roller; 3. Hot pressing mechanism; 31. Gantry frame; 32. Hydraulic cylinder; 33. Lifting plate; 34. Heating head; 35. Roller; 4. Flattening mechanism; 41. Water storage tank; 42. Water pump; 43. Water inlet hose; 44. Flattening assembly; 441. Fixing plate; 442. Guide rod; 443. Mounting plate; 444. Limiting ring; 445. Spring; 446. Guide arc plate; 45. No. 1 diversion hose; 46. Pressure plate; 47. Connecting hose; 48. No. 2 diversion hose; 49. Return hose; 5. Support leg; 6. No. 2 pressing roller; 7. Guide roller. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example

[0020] Please see Figure 1 and Figure 2 A packaging bag pressing device with good compaction effect includes two side plates 1 arranged symmetrically on the left and right. The top of the two side plates 1 is symmetrically connected to two No. 1 pressing rollers 2, and the middle of the two side plates 1 is symmetrically connected to a No. 2 pressing roller 6. The bottom of the two side plates 1 is symmetrically connected to two guide rollers 7. The packaging bag is conveyed from front to back, passing around the No. 1 pressing roller 2, the guide roller 7 and the No. 2 pressing roller 6 in sequence. The top of the two side plates 1 is provided with a hot pressing mechanism 3 for hot pressing the packaging bag. The two side plates 1 are each provided with a flattening mechanism 4.

[0021] In use, the hot pressing mechanism 3 is used to perform multi-point hot pressing and sealing on both sides of the packaging bag. The flattening mechanism 4 is used to flatten and cool the packaging bag after hot pressing. The first pressing roller 2, the guide roller 7 and the second pressing roller 6 are used to guide and convey the packaging bag from front to back.

[0022] Please see Figure 2 and Figure 3 The hot pressing mechanism 3 includes a gantry frame 31 that is fixedly connected to the top of the two side plates 1. A hydraulic cylinder 32 is fixedly installed at the center of the top surface inside the gantry frame 31. A lifting plate 33 is fixedly installed at the bottom of the output end of the hydraulic cylinder 32. Two support legs 5 are fixedly installed symmetrically at the bottom of the two side plates 1. Two heating heads 34 are fixedly connected symmetrically at the bottom of the lifting plate 33. Rollers 35 are rotatably connected to the bottom of the two heating heads 34.

[0023] In use, the heating head 34 is first activated to preheat the roller 35. When the packaging bag passes by the first pressing roller 2, the guide roller 7 and the second pressing roller 6 in sequence from front to back, the hydraulic cylinder 32 is activated. The conveying end of the hydraulic cylinder 32 extends, driving the lifting plate 33 and the heating head 34 on it to move downwards, and simultaneously driving the roller 35 to move downwards until the outer bottom of the roller 35 contacts the packaging bag on the two first pressing rollers 2 and the second pressing roller 6 respectively, realizing three-point heat pressing of the packaging bag and improving the effect of heat pressing and sealing.

[0024] Please see Figure 2 and Figure 4 The flattening mechanism 4 includes a water storage tank 41 and four flattening components 44 arranged in a rectangular shape. The four flattening components 44 are arranged in pairs and symmetrically front and back. Each flattening component 44 includes a fixing plate 441 fixedly connected to the side plate 1. An mounting plate 443 is fixedly installed on the side of the fixing plate 441 away from the side plate 1. Two guide rods 442 slide symmetrically through the mounting plate 443. A pressure plate 46 is fixedly installed on the end of the two guide rods 442 near the packaging bag. The two pressure plates 46 are respectively attached to the upper and lower sides of the packaging bag.

[0025] Please see Figure 2 and Figure 4 A spring 445 is sleeved in the middle of the guide rod 442. The spring 445 is located between the pressure plate 46 and the mounting plate 443. A limit ring 444 is fixedly sleeved at the end of the guide rod 442 away from the pressure plate 46. The limit ring 444 fits against the mounting plate 443. Guide arc plates 446 are fixedly installed on both sides of the pressure plate 46. A first diversion hose 45 and a second diversion hose 48 are fixedly installed between two pressure plates 46 in the same group. A connecting hose 47 is fixedly connected between two adjacent second diversion hoses 48. A water inlet hose 43 is fixedly installed on the first diversion hose 45 located on the front side. A water pump 42 is fixedly installed after the bottom of the first diversion hose 45 passes through the top of the water storage tank 41. The water pump 42 is fixedly installed on the bottom surface inside the water storage tank 41. A return hose 49 is fixedly installed on the first diversion hose 45 located on the rear side. The bottom of the return hose 49 passes through the top of the water storage tank 41.

[0026] In use, the packaging bag is passed through two symmetrical pressure plates 46. The pressure plates 46 are hollow inside. Under the elastic force of the spring 445, the two pressure plates 46 move towards each other, flattening the packaging bag. At this time, the water pump 42 is started, which delivers the water stored in the water tank 41 to the inlet hose 43, then to the first diversion hose 45, and then into the pressure plate 46. The cooling water removes the heat from the packaging bag, achieving rapid cooling of the packaging bag after hot pressing, effectively preventing wrinkles after hot pressing. The cooled water, after absorbing heat, flows through the second diversion hose 48 and the connecting hose 47, and then returns to the water tank 41 through the return hose 49, realizing the recycling of the cooling water.

[0027] It should be noted that this packaging bag pressing device with good compaction effect, when in use, first passes the packaging bag around the first pressing roller 2 and guide roller 7 located on the front side, then around the second pressing roller 6, and then around the guide roller 7 and the first pressing roller 2 located on the rear side, realizing the front-to-back conveying of the packaging bag, while ensuring that the packaging bag is between the two pressing plates 46. At this time, the heating head 34 is activated to preheat the roller 35, and then the hydraulic cylinder 32 is activated. The conveying end of the hydraulic cylinder 32 extends, driving the lifting plate 33 and... The heating head 34 moves downward, simultaneously driving the roller 35 downward until the outer bottom of the roller 35 contacts the packaging bag on the two pressing rollers 2 and 6 respectively, achieving three-point heat pressing of the packaging bag and improving the heat pressing sealing effect. Then, the water pump 42 is started to deliver cooling water to the pressure plate 46, which flattens the hot-pressed packaging bag and cools it at the same time through the cooling water, effectively preventing the packaging bag from wrinkling after heat pressing and improving the compaction effect.

[0028] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A packaging bag edge-pressing device with good compaction effect, comprising two side plates (1) symmetrically arranged on the left and right sides, characterized in that: The top of the two side plates (1) are symmetrically connected to two No. 1 pressing rollers (2), and the middle of the two side plates (1) is symmetrically connected to a No. 2 pressing roller (6). The bottom of the two side plates (1) is symmetrically connected to two guide rollers (7). The packaging bag passes through the No. 1 pressing roller (2), guide roller (7) and No. 2 pressing roller (6) in sequence and is conveyed from front to back. The top of the two side plates (1) is provided with a hot pressing mechanism (3) for hot pressing the packaging bag. The two side plates (1) are provided with a flattening mechanism (4).

2. The packaging bag edge-pressing device with good compaction effect according to claim 1, characterized in that: The hot pressing mechanism (3) includes a gantry frame (31) that is fixedly connected to the top of the two side plates (1). A hydraulic cylinder (32) is fixedly installed at the center of the top surface inside the gantry frame (31). A lifting plate (33) is fixedly installed at the bottom of the output end of the hydraulic cylinder (32). Two support legs (5) are fixedly installed symmetrically at the bottom of the two side plates (1).

3. The packaging bag edge-pressing device with good compaction effect according to claim 2, characterized in that: The bottom of the lifting plate (33) is symmetrically fixed with two heating heads (34), and the bottom of each heating head (34) is rotatably connected with a roller (35).

4. The packaging bag edge-pressing device with good compaction effect according to claim 1, characterized in that: The flattening mechanism (4) includes a water storage tank (41) and four flattening components (44) arranged in a rectangular shape. The four flattening components (44) are arranged in pairs and symmetrically distributed front and back. The flattening component (44) includes a fixing plate (441) fixedly connected to the side plate (1). A mounting plate (443) is fixedly installed on the side of the fixing plate (441) away from the side plate (1). Two guide rods (442) slide symmetrically through the mounting plate (443). A pressure plate (46) is fixedly installed on the end of the two guide rods (442) near the packaging bag. The two pressure plates (46) are respectively attached to the upper and lower sides of the packaging bag.

5. The packaging bag edge-pressing device with good compaction effect according to claim 4, characterized in that: A spring (445) is sleeved in the middle of the guide rod (442). The spring (445) is located between the pressure plate (46) and the mounting plate (443). A limit ring (444) is fixedly sleeved at the end of the guide rod (442) away from the pressure plate (46). The limit ring (444) is in contact with the mounting plate (443). Guide arc plates (446) are fixedly installed on both sides of the pressure plate (46).

6. The packaging bag edge-pressing device with good compaction effect according to claim 5, characterized in that: Two pressure plates (46) in the same group are fixedly installed with a first diversion hose (45) and a second diversion hose (48). A connecting hose (47) is fixedly connected between two adjacent second diversion hoses (48). An inlet hose (43) is fixedly installed on the first diversion hose (45) located on the front side. A water pump (42) is fixedly installed after the bottom of the first diversion hose (45) passes through the top of the water storage tank (41). The water pump (42) is fixedly installed on the bottom surface inside the water storage tank (41). A return hose (49) is fixedly installed on the first diversion hose (45) located on the rear side. The bottom of the return hose (49) passes through the top of the water storage tank (41).

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