Handheld paperboard creasing device

Abstract

The utility model discloses a handheld paperboard creasing device which comprises a main frame and an annular creasing roller rotationally connected to the main frame, the main frame comprises a grip part and a connecting part located below the grip part, the connecting part is provided with a grip hole close to the grip part, and at least three non-collinear tensioning wheels are arranged on the connecting part; the tensioning wheels are respectively supported in the inner circle of the indentation roller so as to support the indentation roller and enable the indentation roller to rotate on the tensioning wheels; and the lower end of the indentation roller downwards protrudes out of the connecting part. The paper board folding device has the advantages that the paper board folding device is convenient to hold, the paper board folding effect can be improved, and the paper board is effectively prevented from being crushed.

Description

Technical Field

[0001] The utility model relates to the technical field of cardboard crease pressing devices, in particular to a handheld cardboard crease pressing device. Background Art

[0002] In the packaging industry, corrugated boxes and paper cards are commonly used packaging materials, which usually need to be creased to enable them to be bent into shape. However, the manual crease tools currently on the market have some problems during use.

[0003] Specifically, existing manual creasing tools usually include a handle and a roller that can crease. The handle is usually designed to be easy to hold, and the roller is connected to the handle through a pin or bearing to facilitate crease. In order to prevent interference when holding by hand, the diameter of the roller is usually designed to be relatively small. However, the small diameter of the roller makes it easy to break the corrugated cardboard during the creasing process, thereby affecting the quality and performance of the corrugated cardboard. Secondly, conventional manual creasing tools are also not easy to apply force, which makes it easy to apply uneven force, affecting the efficiency and effect of creasing.

[0004] Therefore, it is necessary to further improve and perfect the prior art to overcome these deficiencies, and the present invention is made based on this situation. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a handheld cardboard crease pressing device which is convenient to hold and can improve the crease pressing effect on the cardboard and effectively avoid crushing the cardboard.

[0006] The utility model is realized through the following technical solutions:

[0007] In order to solve the above technical problems, the utility model provides a handheld cardboard creasing device, comprising a main frame and an annular creasing roller rotatably connected thereto, the main frame comprising a handle portion and a connecting portion located below the handle portion, the connecting portion being provided with a grip hole adjacent to the handle portion, the connecting portion being provided with at least three non-collinear tensioning wheels; each of the tensioning wheels is respectively spread out in the inner circle of the creasing roller to support the creasing roller and allow the creasing roller to rotate thereon; the lower end of the creasing roller protrudes downward from the connecting portion.

[0008] In order to further solve the technical problem to be solved by the utility model, in a handheld cardboard crease pressing device provided by the utility model, the connecting part is flat.

[0009] In order to further solve the technical problem to be solved by the utility model, the utility model provides a handheld cardboard crease device, wherein the connecting part includes a left half sheet and a right half sheet opposite to each other, there is a gap between the left half sheet and the right half sheet, each of the tensioning wheels is connected between the left half sheet and the right half sheet, and the creasing roller is also located between the left half sheet and the right half sheet.

[0010] In order to further solve the technical problem to be solved by the utility model, the utility model provides a handheld cardboard creasing device, in which the size of the inner circle of the creasing roller is larger than the size of the gripping hole, and the gripping hole is completely located within the inner circle of the creasing roller.

[0011] In order to further solve the technical problem to be solved by the utility model, in a handheld cardboard crease pressing device provided by the utility model, the tensioning wheel is rotatably connected to the connecting part.

[0012] In order to further solve the technical problem to be solved by the utility model, in a handheld cardboard crease creasing device provided by the utility model, a bearing or a pin shaft or a rivet for rotationally connecting the tensioning wheel and the connecting part is provided between the tensioning wheel and the connecting part.

[0013] In order to further solve the technical problem to be solved by the utility model, in a handheld cardboard crease device provided by the utility model, the outer end surface of the tensioning wheel is provided with a guide groove that cooperates with the inner side wall of the creasing roller.

[0014] In order to further solve the technical problem to be solved by the utility model, in a handheld cardboard crease pressing device provided by the utility model, the cross section of the guide groove is an inverted trapezoid.

[0015] In order to further solve the technical problem to be solved by the utility model, in a handheld cardboard creasing device provided by the utility model, both side edges of the outer side of the creasing roller are provided with rounded corners.

[0016] In order to further solve the technical problem to be solved by the utility model, in a handheld cardboard crease creasing device provided by the utility model, the connecting part is an inverted triangle, and three tensioning wheels are provided and respectively located at three corners of the connecting part.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The creasing roller of the utility model is a hollow roller, and the inner circle of the roller rolls around multiple support points (i.e., tensioning wheels). When the handle is held by hand, the fingers pass through the grip holes and also through the inner circle of the creasing roller. Such a design is compact, and the position of the fingers provides better control, making the force transmitted through the creasing roller more stable.

[0019] 2. Since the utility model adopts a large-diameter annular creasing roller, and the inner circle of the creasing roller rolls around multiple support points (i.e., tensioning wheels), it can ensure that the applied force acts evenly on the cardboard through the creasing roller, so that the angle of the creasing roller when pressing into the cardboard becomes larger and the force-bearing area increases, effectively avoiding the risk of crushing the paper.

[0020] 3. In addition, since the diameter of the creasing roller is relatively large and it is supported by at least three supporting points (tensioning wheels), the creasing roller is not easy to shake when rolling, which is conducive to smoother creases and improved crease quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is an explosion schematic diagram of the utility model;

[0024] Figure 3 It is a cross-sectional schematic diagram of the utility model. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figures 1 to 3 The handheld cardboard creasing device shown comprises a main frame 1 and an annular creasing roller 2 rotatably connected thereto.

[0027] The main frame 1 includes a handle portion 11 and a connecting portion 12 located below the handle portion 11. The handle portion 11 is designed to facilitate the user to hold it, and the connecting portion 12 is provided with a grip hole 121 adjacent to the handle portion 11. The connecting portion 12 is provided with at least three non-collinear tensioning wheels 3, which are respectively spread in the inner circle of the creasing roller 2 to support the creasing roller 2 and allow it to rotate thereon.

[0028] Of course, the lower end of the creasing roller 2 protrudes downward from the connecting portion 12, and such a structure enables the roller to better contact and act on the surface of the paperboard. It is worth noting that the outer diameter of the creasing roller 2 is preferably designed to be greater than 75 mm, which can ensure that the roller can form clear folds while rolling without crushing the paperboard.

[0029] When in use, the handle 11 is held by hand and downward and forward pressure is applied to make the creasing roller 2 roll smoothly on the paperboard, thereby pressing the desired crease on the paperboard.

[0030] The creasing roller 2 of the utility model is a hollow roller, and the inner circle of the roller rolls around multiple support points (i.e., the tensioning wheel 3). When the grip portion 11 is held by hand, the fingers pass through the grip holes 121 and also pass through the inner circle of the creasing roller 2. This position of the fingers not only provides better control, but also makes the force transmitted through the creasing roller 2 more stable and uniform. Such a design structure is compact and can also ensure that the creasing roller 2 has a larger size.

[0031] Since the utility model adopts a large-diameter annular creasing roller 2, and the inner circle of the creasing roller 2 rolls around multiple support points (i.e., the tensioning wheel 3), it can ensure that the applied force acts evenly on the paperboard through the creasing roller 2, so that the angle of the creasing roller 2 when pressing into the paperboard becomes larger and the force-bearing area increases, effectively avoiding the risk of crushing the paper.

[0032] In addition, since the diameter of the creasing roller 2 is relatively large and is supported by at least three supporting points (tensioning wheel 3), the creasing roller 2 is not easy to shake when rolling, which is conducive to smoother creases and improved crease quality.

[0033] More specifically, the connecting portion 12 is flat.

[0034] More specifically, the connecting portion 12 includes a left half piece 122 and a right half piece 123 that are opposite to each other, and there is a gap between the left half piece 122 and the right half piece 123. The gap between the left half piece 122 and the right half piece 123 provides the necessary space for the installation of the tensioning wheel 3. Each tensioning wheel 3 is installed between these two half pieces. This layout allows the tensioning wheels 3 to be evenly distributed around the inner circle of the creasing roller 2, thereby providing stable support for the roller and reducing friction and resistance during rolling. The creasing roller 2 itself is also located between the left half piece 122 and the right half piece 123. This design allows the roller to fit closely with the tensioning wheel 3, ensuring accuracy and consistency during the creasing process.

[0035] More specifically, the inner circle of the creasing roller 2 is larger than the grip hole 121, and the grip hole 121 is completely within the inner circle of the creasing roller 2. This design not only provides a stable gripping position for the operator, but also ensures that the operator's hand will not touch the roller or other moving parts during the creasing process, thereby greatly reducing the operating risk and improving the safety of use.

[0036] More specifically, the tensioning wheel 3 is rotatably connected to the connecting portion 12. The core purpose of this design is to significantly reduce the friction between the indentation roller 2 and the tensioning wheel 3, thereby extending the service life of the device and improving its working efficiency.

[0037] In order to achieve this goal, a rotating connection element such as a bearing, a pin or a rivet 4 is used between the tension wheel 3 and the connecting portion 12. These elements not only ensure that the tension wheel 3 can rotate freely, but also effectively reduce friction and wear.

[0038] More specifically, the outer end surface of the tension wheel 3 is provided with a guide groove 31 that cooperates with the inner side wall of the creasing roller 2. The design of the guide groove 31 improves the mutual cooperation between the creasing roller 2 and the tension wheel 3 and the accuracy of operation.

[0039] More specifically, the cross section of the guide groove 31 is an inverted trapezoid. First, the inverted trapezoidal groove can provide a larger contact area, which means that when the creasing roller 2 interacts with the tensioning wheel 3, it can be more stable, thereby improving the accuracy of the operation. Secondly, this cross-sectional shape helps guide the creasing roller 2 to automatically align during normal use, reducing the possibility of the device being offset during long-term use, and ensuring long-term stability in use.

[0040] More specifically, both sides of the outer side of the creasing roller 2 are provided with rounded corners 21. The rounded corner design can effectively reduce the damage that may be caused to the cardboard or other materials during operation, and also reduce the safety hazard of the operator when contacting the device.

[0041] Furthermore, the connecting portion 12 adopts an inverted triangle structure design, which has good mechanical stability and can effectively disperse and withstand forces from different directions. Tensioning wheels 3 are respectively arranged at the three corners of the inverted triangle. Such a layout not only enables the tensioning wheels 3 to be evenly distributed on the connecting portion 12, but also ensures the stability and synchronization of the tensioning wheels 3 during operation. The arrangement of three tensioning wheels 3 enables the device to provide more uniform force during indentation, thereby improving the quality and consistency of indentation.

[0042] In addition, the design of the inverted triangle connecting portion 12 also takes into account the compactness of the overall structure of the device. This shape helps to reduce the volume of the device, making the handheld cardboard creasing device more portable and convenient for users to use in different working environments. At the same time, the compact structural design also helps to reduce the use of materials, reduce production costs, and make the device more competitive in the market.

Claims

1. A handheld cardboard crease device, characterized in that: The invention comprises a main frame (1) and an annular creasing roller (2) rotatably connected thereto, wherein the main frame (1) comprises a gripping portion (11) and a connecting portion (12) located below the gripping portion (11), wherein the connecting portion (12) is provided with a gripping hole (121) adjacent to the gripping portion (11), and the connecting portion (12) is provided with at least three non-collinear tensioning wheels (3); each of the tensioning wheels (3) is respectively extended in the inner circle of the creasing roller (2) to support the creasing roller (2) and allow the creasing roller (2) to rotate thereon; and the lower end of the creasing roller (2) protrudes downward from the connecting portion (12).

2. A handheld cardboard crease device according to claim 1, characterized in that: The connecting portion (12) is flat.

3. A handheld cardboard crease device according to claim 1 or 2, characterized in that: The connecting portion (12) comprises a left half sheet (122) and a right half sheet (123) which are opposite to each other. There is a gap between the left half sheet (122) and the right half sheet (123). Each of the tensioning wheels (3) is connected between the left half sheet (122) and the right half sheet (123). The indentation roller (2) is also located between the left half sheet (122) and the right half sheet (123).

4. The handheld cardboard crease device according to claim 1, characterized in that: The size of the inner circle of the creasing roller (2) is larger than the size of the gripping hole (121), and the gripping hole (121) is completely located within the inner circle of the creasing roller (2).

5. The handheld cardboard crease device according to claim 1, characterized in that: The tension wheel (3) is rotatably connected to the connecting portion (12).

6. The handheld cardboard crease device according to claim 5, characterized in that: A bearing or a pin or a rivet (4) for rotationally connecting the tension wheel (3) and the connecting portion (12) is provided between the tension wheel (3) and the connecting portion (12).

7. The handheld cardboard crease device according to claim 1, characterized in that: The outer end surface of the tension wheel (3) is provided with a guide groove (31) which cooperates with the inner side wall of the impression roller (2).

8. The handheld cardboard crease device according to claim 7, characterized in that: The cross section of the guide groove (31) is an inverted trapezoid.

9. The handheld cardboard crease device according to claim 1, characterized in that: Both side edges of the outer surface of the indentation roller (2) are provided with rounded corners (21).

10. The handheld cardboard crease device according to claim 1, characterized in that: The connecting portion (12) is in the shape of an inverted triangle, and three tension wheels (3) are provided and are respectively located at three corners of the connecting portion (12).

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