Film pressing structure for manufacturing middle-sealed organ bag

Abstract

The utility model discloses a film pressing structure for manufacturing a middle-sealed organ bag, which is characterized in that a bag folding vertical plate is arranged in the middle of a bottom frame, and the film pressing structure comprises a plurality of pressing wheel components distributed on two sides of the bag folding vertical plate; each pressing wheel assembly comprises a first support, an adjusting rod penetrating through the side face of the first support, a swing rod hinged to one end of the adjusting rod and a pressing wheel fixedly connected with the non-hinged end of the swing rod, the adjusting rods face the bag folding vertical plate and are locked in position through a length locking structure, and the pressing wheels are used for enabling a part of a folded packaging film to be pressed and attached to the table top of the bottom frame. The other part of the folded packaging film is attached to the side face of the bag folding vertical plate in a pressing mode, and a position adjusting structure used for fixing the first support to the bottom frame is arranged at the bottom of the first support. By arranging the film pressing structure, the packaging film can be folded into a bag shape for subsequent edge clamping hot melting of a heat sealing machine, and the problem that in the prior art, the packaging film is inconvenient to fold into the bag shape through a pressing wheel is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of accordion bags, in particular to a film pressing structure used for manufacturing center-sealed accordion bags. Background Art

[0002] There are many styles of packaging bags used for food packaging, and accordion bags are widely used in food packaging due to their many advantages such as small footprint. The center-sealed accordion bag is actually made by rolling the packaging film. After unfolding it, the packaging film is folded into a bag shape, and then the edges are hot-melted using a heat sealing machine.

[0003] After searching, in the prior art, the Chinese patent with patent announcement number CN214420793U discloses "a kind of accordion bag packaging device, this utility model utilizes the gravity cross bar of the packaging bag loaded with raw materials to squeeze the clamping plate in the middle, and at the same time, through the hinged axis to squeeze the left and right sides of the packaging bag in the middle, so that the inner bag and the outer bag of the packaging bag form an accordion bag style at the same time, with good packaging effect and simple operation", but there are still the following defects:

[0004] (1) However, in actual use, it is inconvenient to fold the packaging film into a bag shape by a pressing wheel, so that the bag forms a vertical edge, which makes it inconvenient for the subsequent heat sealing machine to clamp the edge and hot melt;

[0005] (2) In actual use, it is inconvenient to adjust the pressing wheel, resulting in low applicability and inability to meet production needs of different sizes.

[0006] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a film pressing structure for the manufacture of center-seal accordion bags, aiming to fold the entire packaging film into a bag shape, and finally form a vertical edge of the bag for subsequent heat sealing machine edge clamping and hot melting.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A film pressing structure for manufacturing center-sealed accordion bags, a bag folding plate is provided in the middle of a base frame, and the film pressing structure includes a plurality of pressing wheel assemblies distributed on both sides of the bag folding plate, each of the pressing wheel assemblies includes a first support, an adjusting rod passing through a side surface of the first support, a swing arm hinged to one end of the adjusting rod, and a pressing wheel fixed to a non-hinged end of the swing arm, the adjusting rod faces the bag folding plate and is locked in position by a length locking structure, the pressing wheel is used to press a part of the packaging film after folding against the table surface of the base frame, while the other part of the packaging film after folding is pressed against the side surface of the bag folding plate, and a positioning structure for fixing the first support to the base frame is provided at the bottom.

[0010] Furthermore, a waist-shaped groove extending along the conveying direction of the packaging film is opened on the base frame, and the adjustment structure includes a threaded rod arranged at the bottom of the first support and passing through the waist-shaped groove, and a locking nut cooperating with the threaded rod, and the locking nut fixes the first support on the base frame.

[0011] Furthermore, the length locking structure includes a locking screw threadedly connected to the top of the first support, and the locking screw can squeeze and fix the adjusting rod.

[0012] Furthermore, the pressure wheel is in the shape of a truncated cone and its axis is rotatably connected to the rocker arm.

[0013] Furthermore, the pressure wheel is a flat wheel structure and is rotatably connected to the rocker arm.

[0014] Furthermore, it also includes a mandrel assembly for straightening the bag folding stand.

[0015] Furthermore, the push rod assembly includes a second support provided on the base frame and a push rod penetrating a side surface of the second support, the push rod is pressed against a side surface of the bag folding vertical plate and locked in position by a length locking structure.

[0016] Beneficial effects:

[0017] The film pressing structure provided by the utility model for manufacturing the center-seal accordion bag is provided with a film pressing structure, a position adjustment structure and a length locking structure. When in use, the film pressing structure can fold the spread packaging film into a bag shape by a pressing wheel, and finally form a vertical edge of the bag for subsequent edge clamping and hot melting of the heat sealing machine. At the same time, the position of the pressing wheel can be changed, which is convenient for adjusting different positions for use, thus solving the problem in the prior art that it is inconvenient to fold the packaging film into a bag shape by a pressing wheel, so that the bag forms a vertical edge, which makes it inconvenient for subsequent edge clamping and hot melting of the heat sealing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the film pressing structure for manufacturing a center-sealed gusset bag provided by the utility model;

[0019] Figure 2 A schematic diagram of the structure of the film pressing structure for manufacturing a center-sealed gusset bag provided by the utility model;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of the positioning structure in the film pressing structure for manufacturing the center-sealed gusset bag provided by the utility model;

[0021] Figure 4 A schematic diagram of the structure of a pressing wheel assembly in a film pressing structure for manufacturing a center-sealed accordion bag provided by the utility model;

[0022] Figure 5The utility model provides a film pressing structure for manufacturing a center-sealed gusset bag Figure 2 Enlarged view of point A in the middle.

[0023] Explanation of the main component symbols: 1. Base frame; 2. Bag folding plate; 3. Film pressing structure; 4. Pressing wheel assembly; 5. Positioning structure; 6. Length locking structure; 7. Push rod assembly; 401. First support; 402. Adjusting rod; 403. Rocker arm; 404. Pressing wheel; 501. Waist-shaped groove; 502. Threaded rod; 503. Locking nut; 601. Locking screw; 701. Second support; 702. Push rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The utility model provides a film pressing wheel structure for a center-sealed accordion bag, wherein a bag folding plate 2 is provided in the middle of a base frame 1, and a film pressing structure 3 comprises a plurality of pressing wheel assemblies 4 distributed on both sides of the bag folding plate 2, each of the pressing wheel assemblies 4 comprises a first support 401, an adjusting rod 402 penetrating a side of the first support 401, a swing rod 403 hinged to one end of the adjusting rod 402, and a pressing wheel 404 fixed to a non-hinged end of the swing rod 403, the adjusting rod 402 faces the bag folding plate 2 and is locked in position by a length locking structure 6, the pressing wheel 404 is used to press a part of the packaging film after folding against the desktop of the base frame 1, and the other part of the packaging film after folding against the side of the bag folding plate 2, and a positioning structure 5 for fixing the first support 401 on the base frame 1 is provided at the bottom of the first support 401.

[0026] In actual application, the bag folding plate 2 is located on the upper position of the base frame 1 and is suspended by a supporting mechanism. The packaging film roll is unwound so that the packaging film is transported forward from between the bag folding plate 2 and the table top of the base frame 1, and is transported at a uniform speed through an external pulling device. Then, both sides of the packaging film are folded toward the bag folding plate 2. Then, under the pressure of the pressing wheel 404, a part of the folded packaging film is pressed against the table top of the base frame 1, and then the other part of the folded packaging film is pressed against the side of the bag folding plate 2. In this way, the packaging film can be folded into a bag shape, so that the bag forms a vertical edge, which is convenient for the subsequent heat sealing machine to clamp the edge and hot melt. Then, the length locking structure 6 can lock the position of the adjusting rod 402, and the positioning structure 5 can adjust the position of the first support 401.

[0027] In a preferred embodiment, see Figure 3 The base frame 1 is provided with a waist-shaped groove 501 extending in the conveying direction of the packaging film, and the adjustment structure 5 includes a threaded rod 502 arranged at the bottom of the first support 401 and passing through the waist-shaped groove 501, and a locking nut 503 matched with the threaded rod 502, and the locking nut 503 fixes the first support 401 on the base frame 1. The threaded rod 502 can be slidably adjusted inside the waist-shaped groove 501 by loosening the locking nut 503, so as to adjust the position of the first support 401, and the first support 401 can be locked by tightening the locking nut 503 after the adjustment is completed.

[0028] In a preferred embodiment, see Figure 4 The length locking structure 6 includes a locking screw 601 threadedly connected to the top of the first support 401, and the locking screw 601 can squeeze and fix the adjustment rod 402. By tightening the locking screw 601, the locking screw 601 can be pressed against the adjustment rod 402, thereby locking the position of the adjustment rod 402.

[0029] In a preferred embodiment, see Figure 4 The pressing wheel 404 is truncated cone-shaped and its axis is rotatably connected to the swing rod 403. The truncated cone-shaped pressing wheel 404 can improve the use effect of the pressing wheel 404.

[0030] In a preferred embodiment, see Figure 4 The pressing wheel 404 is a flat wheel structure and is rotatably connected to the swing rod 403. The pressing wheel 404 with a flat wheel structure can improve the use effect of the pressing wheel 404 and improve the efficiency of film pressing.

[0031] In a preferred embodiment, see Figure 5 , and also includes a top rod assembly 7 for straightening the folding bag vertical plate 2.

[0032] Further, the push rod assembly 7 includes a second support 701 disposed on the base frame 1 and a push rod 702 penetrating the side of the second support 701, and the push rod 702 is pressed against the side of the bag folding plate 2 and locked in position by the length locking structure 6. The push rod 702 can press against the side of the bag folding plate 2 to improve the stability of the bag folding plate 2.

[0033] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A film pressing structure for manufacturing center-sealed accordion bags, wherein a bag folding plate is provided in the middle of the bottom frame, characterized in that: The film pressing structure includes a plurality of pressing wheel assemblies distributed on both sides of the bag folding plate, each of the pressing wheel assemblies includes a first support, an adjusting rod penetrating the side of the first support, a swing rod hinged to one end of the adjusting rod, and a pressing wheel fixed to the non-hinged end of the swing rod, the adjusting rod faces the bag folding plate and is locked in position by a length locking structure, the pressing wheel is used to press a part of the packaging film after folding against the table top of the base frame, while the other part of the packaging film after folding is pressed against the side of the bag folding plate, and the bottom of the first support is provided with a positioning structure for fixing the first support on the base frame.

2. The film pressing structure for manufacturing center-sealed gusseted bags according to claim 1 is characterized in that: The base frame is provided with a waist-shaped groove extending along the conveying direction of the packaging film. The adjustment structure includes a threaded rod arranged at the bottom of the first support and passing through the waist-shaped groove, and a locking nut cooperating with the threaded rod, and the locking nut fixes the first support on the base frame.

3. The film pressing structure for manufacturing center-sealed gusseted bags according to claim 2 is characterized in that: The length locking structure comprises a locking screw threadedly connected to the top of the first support, and the locking screw can compress and fix the adjusting rod.

4. The film pressing structure for manufacturing center-sealed gusseted bags according to claim 1, characterized in that: The pressure wheel is in the shape of a truncated cone and is rotatably connected to the rocker at its axis.

5. The film pressing structure for manufacturing center-sealed gusseted bags according to claim 1, characterized in that: The pressure wheel is a flat wheel structure and is rotatably connected to the swing rod.

6. The film pressing structure for manufacturing center-sealed gusseted bags according to claim 1, characterized in that: It also includes a top rod assembly for straightening the folding bag standing plate.

7. The film pressing structure for manufacturing center-sealed gusseted bags according to claim 6, characterized in that: The push rod assembly includes a second support seat arranged on the base frame and a push rod penetrating the side of the second support seat. The push rod is pressed against the side of the bag folding plate and locked in position by a length locking structure.

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