Conveniently adjustable paper bag creasing mechanism

Abstract

This utility model discloses a conveniently adjustable paper bag creasing mechanism, relating to the field of paper bag creasing technology. The utility model includes a bottom mold assembly and a pressing mold assembly disposed above it; the pressing mold assembly includes an upper mold sleeve, an upper plate mold, and a pressing knife plate; the upper plate mold is fixed to the lower end of the inner side of the upper mold sleeve; the pressing knife plate is vertically slidably sleeved inside the upper mold sleeve, and a set of creasing knives is fixedly mounted on its lower end, the creasing knives sliding through the upper plate mold; the upper end of the upper plate mold is connected to the lower end of the pressing knife plate via a top plate spring; a lower pressing screw is threaded onto the surface of the upper mold sleeve, its lower end rotatably connected to the upper surface of the pressing knife plate. In this utility model, when the paper bag material is placed on the bottom mold assembly, a hydraulic device drives the upper mold sleeve to press down, causing the upper plate mold to press the paper tightly, while the creasing knives press down to form creases. By rotating the lower pressing screw, the height of the pressing knife plate can be adjusted, thereby controlling the extension length of the creasing knives, achieving adjustment of the creasing depth for paper of different thicknesses, ensuring clear and uniform creasing, and facilitating subsequent folding.

Description

Technical Field

[0001] This utility model belongs to the field of paper bag creasing technology, and in particular relates to a paper bag creasing mechanism that is easy to adjust. Background Technology

[0002] In the paper bag production process, the precision of the creasing process directly affects the subsequent folding and forming effect and the overall quality of the packaging bag. Traditional creasing equipment usually uses creasing blades with a fixed depth, which is difficult to adapt to paper materials of different thicknesses or types. This can easily lead to problems such as creasing too deep, causing paper to break, or creasing too shallow, making it difficult to shape. Manually adjusting the blade height is not only cumbersome and inefficient, but also makes it difficult to ensure the consistency of multiple sets of creasing blades, affecting the standardization of mass production. At the same time, the lack of a precise adjustment mechanism for the pressure-bearing bottom mold further reduces the adaptability to paper of different weights, restricting the flexibility and efficiency of the production line.

[0003] To address these issues, we provide an easily adjustable paper bag creasing mechanism. Utility Model Content

[0004] The purpose of this invention is to provide a conveniently adjustable paper bag creasing mechanism. A pressure plate is vertically slidably fitted into an upper mold sleeve. An upper plate mold is fixedly installed at the inner bottom end of the upper mold sleeve. The creasing blade on the lower end of the pressure plate slides through the upper plate mold. The paper material to be creasing is placed on the bottom mold assembly below the upper mold sleeve. The upper end of the upper mold sleeve is connected to the output end of a hydraulic device. The hydraulic device drives the upper mold sleeve to move downwards, pressing the upper plate mold onto the paper and causing the creasing blade to press against the paper, forming creases and facilitating the folding of the paper bag. A set of top plate springs is fixedly connected to the upper end face of the upper plate mold. A lower pressure screw is threaded through the upper end face of the upper mold sleeve. Rotating the lower pressure screw pushes the pressure plate vertically, thereby adjusting the length of the creasing blade penetrating the upper plate mold, enabling creasing of different thicknesses to achieve the designed creasing requirements.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a conveniently adjustable paper bag creasing mechanism, including a bottom mold assembly and a pressing mold assembly. The pressing mold assembly is located above the bottom mold assembly and includes an upper plate mold, a pressing knife plate, and an upper mold sleeve. The upper mold sleeve is a U-shaped plate structure with an opening facing downwards. The upper plate mold is fixedly installed on the lower inner side of the upper mold sleeve. The pressing knife plate is vertically slidably sleeved inside the upper mold sleeve. A set of creasing knives is fixedly installed on the lower end plate surface of the pressing knife plate. The creasing knives slide through the upper plate mold. A set of top plate springs is fixedly connected to the upper end surface of the upper plate mold. The upper end of the top plate springs is fixedly connected to the lower end surface of the pressing knife plate. A lower pressing screw is threaded through the plate surface of the upper mold sleeve. The lower end of the lower pressing screw is rotatably installed on the upper end surface of the pressing knife plate.

[0006] A further feature of this invention is that the two sides of the upper mold plate are respectively fixedly provided with baffles, and the two sides of the upper mold sleeve are respectively fixedly provided with supporting plates on the inner side of the two vertical plates, and the two baffles are respectively fixedly installed on the upper end face of the supporting plates on both sides.

[0007] A further feature of this invention is that the bottom mold assembly includes a bottom mold base and a bottom mold template. The bottom mold base is a U-shaped structure with an upward opening. Top baffles are fixedly provided on the upper ends of the inner sides of the vertical plates on both sides of the bottom mold base. The bottom mold template slides vertically inside the bottom mold base. A set of support columns are fixedly provided on the lower end face of the bottom mold base. The upper mold sleeve is set above the bottom mold base.

[0008] A further feature of this invention is that the upper outer sides of the two side plates of the bottom mold base are respectively fixed with sliding column top plates, and the lower outer sides of the two vertical plates of the upper mold sleeve are respectively fixed with sliding column sleeve plates. A set of sliding columns is fixedly installed at the upper end of the sliding column top plate. The sliding columns at the upper ends of the two sliding column top plates slide through the two sliding column sleeve plates respectively. A return spring is sleeved on the outer side of the sliding column. The two ends of the return spring are respectively fixedly connected to the upper end face of the sliding column top plate and the lower end face of the sliding column sleeve plate.

[0009] A further feature of this invention is that a top spring plate is vertically slidably sleeved inside the bottom mold base, and a set of pre-tightening springs is fixedly connected to the upper end face of the top spring plate. The upper end of the pre-tightening springs is fixedly connected to the lower end face of the bottom mold plate. An upper top screw is threaded through the horizontal bottom plate of the bottom mold base, and the upper end of the upper top screw is rotatably mounted on the lower end face of the top spring plate.

[0010] A further feature of this invention is that a limiting frame is fixedly installed on the upper end face of the bottom template. The limiting frame is a U-shaped frame structure with a horizontal opening, and the lower end face of the limiting frame is fixedly installed on the upper end face of the bottom template.

[0011] A further feature of this invention is that a horizontal sliding groove is provided on the upper surface of the bottom template, the horizontal sliding groove passes through one side of the bottom template, a pusher plate slides in the horizontal sliding groove, and a top paper vertical plate is fixed on the upper surface of one end of the pusher plate.

[0012] This utility model has the following beneficial effects: This invention involves vertically sliding a pressure plate inside an upper mold sleeve, with an upper plate mold fixedly installed at the bottom inner end of the upper mold sleeve. The crease knife on the lower end of the pressure plate slides through the upper plate mold, and the paper bag material to be creased is placed on the bottom mold assembly below the upper mold sleeve. The upper end of the upper mold sleeve is connected to the output end of a hydraulic device, which drives the upper mold sleeve to move downward, pressing the upper plate mold onto the paper and causing the crease knife to press onto the paper, thus forming creases on the paper and facilitating the folding of the paper bag.

[0013] This invention uses a set of top plate springs fixedly connected to the upper end face of the upper mold, and a lower pressure screw threaded through the upper end face of the upper mold sleeve. By rotating the lower pressure screw, the lower pressure screw pushes the pressure plate to move vertically, thereby adjusting the length of the indentation knife through the upper mold, so as to achieve the indentation required by the design on paper of different thicknesses. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0015] Figure 1 This is a schematic diagram of a paper bag creasing mechanism that is easy to adjust.

[0016] Figure 2 This is an exploded view of the molding assembly.

[0017] Figure 3 This is a schematic diagram of the structure of the bottom mold base and the upper mold sleeve.

[0018] Figure 4 This is a front view of the bottom mold component.

[0019] Figure 5 This is a schematic diagram of the bottom template.

[0020] The attached diagram lists the components represented by each number as follows: 1-Bottom mold assembly, 101-Bottom mold base, 101a-Top baffle, 101b-Support column, 101c-Sliding column top plate, 101c-1-Sliding column, 101c-2-Reset spring, 101d-Top spring plate, 101d-1-Pre-tightening spring, 101e-Upper ejector screw, 102-Bottom template, 102a-Limit frame, 102b-Horizontal sliding groove, 102b-1-Push paper plate, 102b-2-Top paper vertical plate, 2-Pressure mold assembly, 201-Upper plate mold, 201a-Top plate spring, 201b-Blocking ear, 202-Pressure knife plate, 202a-Indentation knife, 203-Upper mold sleeve, 203a-Lower pressure screw, 203b-Receiving plate, 203c-Sliding column sleeve plate. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Example

[0022] Please see Figure 1 and Figure 2 This utility model relates to a conveniently adjustable paper bag creasing mechanism, comprising a bottom mold assembly 1 and a pressing mold assembly 2. The pressing mold assembly 2 is positioned above the bottom mold assembly 1 and includes an upper plate mold 201, a pressing blade 202, and an upper mold sleeve 203. The pressing blade 202 is vertically slidably fitted into the upper mold sleeve 203, and the upper plate mold 201 is fixedly installed at the inner bottom end of the upper mold sleeve 203. The creasing blade 202a on the lower end surface of the pressing blade 202 slides through the upper plate mold 201. The paper bag material to be creasing is placed on the bottom mold assembly 1 below the upper mold sleeve 203. The upper end of the upper mold sleeve 203 is connected to the output end of a hydraulic device. The transmission connection is driven by a hydraulic device to move the upper mold sleeve 203 downward, so that the upper plate mold 201 presses on the paper and the creasing knife 202a presses on the paper, forming creases on the paper, thus facilitating the folding of the paper bag; by fixing a set of top plate springs 201a to the upper end face of the upper plate mold 201, and threading the lower pressure screw 203a through the upper end face of the upper mold sleeve 203, the lower pressure screw 203a is rotated by a screw, so that the lower pressure screw 203a pushes the pressure knife plate 202 to move vertically, thereby adjusting the length of the creasing knife 202a through the upper plate mold 201, so as to be able to press the creasing of paper of different thicknesses to achieve the design requirements.

[0023] Specifically, the upper mold sleeve 203 is a U-shaped plate structure with an opening facing downwards. The upper plate mold 201 is fixedly installed on the lower inner side of the upper mold sleeve 203. The pressure plate 202 is vertically slidably sleeved inside the upper mold sleeve 203. A set of indentation knives 202a is fixedly installed on the lower end plate surface of the pressure plate 202. The indentation knives 202a slide through the upper plate mold 201. A set of top plate springs 201a is fixedly connected to the upper end surface of the upper plate mold 201. The upper end of the top plate springs 201a is fixedly connected to the lower end surface of the pressure plate 202. A lower pressure screw 203a is threaded through the plate surface of the upper mold sleeve 203. The lower end of the lower pressure screw 203a is rotatably installed on the upper end surface of the pressure plate 202.

[0024] Furthermore, the upper plate mold 201 has lugs 201b fixedly installed on both sides, and the upper mold sleeve 203 has support plates 203b fixedly installed on the inner sides of both vertical plates. The lugs 201b on both sides are fixedly installed on the upper end face of the support plates 203b on both sides.

[0025] The operation process in this embodiment is as follows: The paper bag material to be creasing is placed on the bottom mold assembly 1 below the upper mold sleeve 203. According to the thickness and material of the paper, the lower pressure screw 203a is rotated by a screw, which pushes the pressure plate 202 to move vertically, thereby adjusting the length of the creasing knife 202a through the upper mold 201. The upper mold sleeve 203 is driven by a hydraulic device to move downward, so that the upper mold 201 presses on the paper and the creasing knife 202a presses on the paper, forming creases on the paper, thus facilitating the folding of the paper bag. Example

[0026] Please see Figures 1 to 5 Based on Embodiment 1, the bottom mold assembly 1 includes a bottom mold base 101 and a bottom template 102. A top spring plate 101d is vertically slidably sleeved in the bottom mold base 101. A set of pre-tightening springs 101d-1 is fixedly connected to the upper end face of the top spring plate 101d. The upper end of the pre-tightening springs 101d-1 is fixedly connected to the lower end face of the bottom template 102. By adjusting the pre-tightening force of the pre-tightening springs 101d-1, the pressure that pushes the bottom template 102 downward when the upper mold sleeve 203 is pressed down is adjusted, thereby adjusting the pressure of the indentation knife 202a on the paper.

[0027] Specifically, the bottom mold base 101 is a U-shaped structure with an upward opening. Top baffles 101a are fixed to the upper ends of the inner sides of the vertical plates on both sides of the bottom mold base 101. The bottom mold plate 102 slides vertically inside the bottom mold base 101. A set of support columns 101b are fixed to the lower end face of the bottom mold base 101. The upper mold sleeve 203 is set above the bottom mold base 101.

[0028] Furthermore, a sliding column top plate 101c is fixedly installed on the upper outer side of the two side plates of the bottom mold base 101, and a sliding column sleeve plate 203c is fixedly installed on the lower outer side of the two vertical plates of the upper mold sleeve 203. A set of sliding columns 101c-1 is fixedly installed on the upper end of the sliding column top plate 101c. The sliding columns 101c-1 on the upper end of the two sliding column top plates 101c slide through the two sliding column sleeve plates 203c respectively. A return spring 101c-2 is sleeved on the outer side of the sliding column 101c-1. The two ends of the return spring 101c-2 are fixedly connected to the upper end face of the sliding column top plate 101c and the lower end face of the sliding column sleeve plate 203c respectively. When the output end of the hydraulic device is retracted, the return spring 101c-2 pushes the upper mold sleeve 203 to move upward and reset.

[0029] Furthermore, the bottom plate of the bottom mold base 101 is threaded through with an upper push screw 101e. The upper end of the upper push screw 101e is rotatably mounted on the lower end face of the top spring plate 101d. Rotating the upper push screw 101e causes it to push the top spring plate 101d upward, thereby adjusting the preload of the preload spring 101d-1.

[0030] Furthermore, a limiting frame 102a is fixedly installed on the upper end face of the bottom template 102. The limiting frame 102a is a U-shaped frame structure with a horizontal opening. The lower end face of the limiting frame 102a is fixedly installed on the upper end face of the bottom template 102 for positioning the paper.

[0031] Furthermore, a horizontal sliding groove 102b is provided on the upper end face of the bottom template 102. The horizontal sliding groove 102b penetrates one side of the bottom template 102. A pusher plate 102b-1 slides in the horizontal sliding groove 102b. A top paper vertical plate 102b-2 is fixed on the upper end face of one end of the pusher plate 102b-1. After the paper is crimped, the pusher plate 102b-1 is slid to push the paper out by the top paper vertical plate 102b-2.

[0032] The operation process in this embodiment is as follows: According to the pressure required for paper creasing, rotate the upper top screw 101e to push the top spring plate 101d upward, thereby adjusting the preload of the preload spring 101d-1; place the paper into the limiting frame 102a, and the hydraulic device pushes the die assembly 2 downward, so that the creasing knife 202a creasing the paper. After the upper die 201 presses on the paper, it pushes the bottom die 102 downward; after the creasing is completed, the output end of the hydraulic device retracts, and the sliding push plate 102b-1 slides, so that the top paper vertical plate 102b-2 pushes the paper out.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A conveniently adjustable paper bag creasing mechanism, comprising a bottom mold assembly (1) and a pressing mold assembly (2), characterized in that: The pressing mold assembly (2) is disposed above the bottom mold assembly (1). The pressing mold assembly (2) includes an upper plate mold (201), a pressing knife plate (202), and an upper mold sleeve (203). The upper mold sleeve (203) is a U-shaped plate structure with an opening facing downwards. The upper plate mold (201) is fixedly installed on the lower inner side of the upper mold sleeve (203). The pressing knife plate (202) is vertically slidably sleeved inside the upper mold sleeve (203). A set of pressing knives is fixedly installed on the lower end plate surface of the pressing knife plate (202). The indentation knife (202a) slides through the upper plate mold (201). A set of top plate springs (201a) is fixedly connected to the upper end face of the upper plate mold (201). The upper end of the top plate springs (201a) is fixedly connected to the lower end face of the pressure plate (202). A lower pressure screw (203a) is threaded through the plate surface of the upper mold sleeve (203). The lower end of the lower pressure screw (203a) is rotatably installed on the upper end face of the pressure plate (202).

2. The paper bag creasing mechanism that is easy to adjust according to claim 1, characterized in that: The upper plate mold (201) has lugs (201b) fixedly installed on both sides, and the upper mold sleeve (203) has support plates (203b) fixedly installed on the inner sides of both vertical plates. The lugs (201b) on both sides are fixedly installed on the upper end face of the support plates (203b) on both sides.

3. The paper bag creasing mechanism that is easy to adjust according to claim 1, characterized in that: The bottom mold assembly (1) includes a bottom mold base (101) and a bottom template (102). The bottom mold base (101) is a U-shaped structure with an upward opening. Top baffles (101a) are fixed on the upper ends of the inner sides of the vertical plates on both sides of the bottom mold base (101). The bottom template (102) slides vertically inside the bottom mold base (101). A set of support columns (101b) are fixed on the lower end face of the bottom mold base (101). The upper mold sleeve (203) is set above the bottom mold base (101).

4. The paper bag creasing mechanism that is easy to adjust according to claim 3, characterized in that: The upper outer sides of the two side plates of the bottom mold base (101) are respectively fixed with sliding column top plates (101c), and the lower outer sides of the two vertical plates of the upper mold sleeve (203) are respectively fixed with sliding column sleeve plates (203c). A set of sliding columns (101c-1) is fixedly installed on the upper end of the sliding column top plate (101c). The sliding columns (101c-1) on the upper ends of the two sliding column top plates (101c) slide through the two sliding column sleeve plates (203c) respectively. A return spring (101c-2) is sleeved on the outer side of the sliding column (101c-1). The two ends of the return spring (101c-2) are respectively fixedly connected to the upper end face of the sliding column top plate (101c) and the lower end face of the sliding column sleeve plate (203c).

5. The paper bag creasing mechanism that is easy to adjust according to claim 4, characterized in that: A top spring plate (101d) is vertically slidably sleeved inside the bottom mold base (101). A set of pre-tightening springs (101d-1) is fixedly connected to the upper end face of the top spring plate (101d). The upper end of the pre-tightening springs (101d-1) is fixedly connected to the lower end face of the bottom mold plate (102). An upper top screw (101e) is threaded through the horizontal bottom plate of the bottom mold base (101). The upper end of the upper top screw (101e) is rotatably installed on the lower end face of the top spring plate (101d).

6. The paper bag creasing mechanism that is easy to adjust according to claim 5, characterized in that: A limiting frame (102a) is fixedly installed on the upper end face of the bottom template (102). The limiting frame (102a) is a U-shaped frame structure with a horizontal opening. The lower end face of the limiting frame (102a) is fixedly installed on the upper end face of the bottom template (102).

7. The paper bag creasing mechanism that is easy to adjust according to claim 6, characterized in that: The upper surface of the bottom template (102) is provided with a horizontal sliding groove (102b), which penetrates one side of the bottom template (102). A pusher plate (102b-1) slides in the horizontal sliding groove (102b), and a top paper vertical plate (102b-2) is fixed on the upper surface of one end of the pusher plate (102b-1).

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