Paper flatness trimming device for packaging box

Abstract

The paper flatness trimming device comprises a rack, a conveying roller set and a trimming assembly, one end of the rack is a feeding end, the other end of the rack is a discharging end, the conveying roller set is rotationally borne on the rack, the trimming assembly is arranged on the rack, and the trimming assembly comprises a limiting plate and a plurality of trimming balls; the limiting plate is erected above the rack in the length direction of the rack, the multiple trimming balls are rotationally borne on the limiting plate, a gap allowing paper to pass through is formed between the limiting plate and the conveying roller set, when the paper passes through the gap, the trimming balls abut against the surface of the paper, and when no paper passes through the gap, the trimming balls abut against the conveying roller set; the paper cutting device has the effect of improving the flatness of the surface of cut paper.

Description

Technical Field

[0001] The present application relates to the field of packaging bags, and in particular to a paper flatness trimming device for packaging boxes. Background Art

[0002] Packaging bags are light and easy to carry, have good protection, low cost, easy to store and transport, and have good plasticity and customizability. They are widely used in various industries such as food, medicine, cosmetics, and agriculture. They are used to package various products such as food, daily necessities, etc., meeting the diverse packaging needs of different industries.

[0003] The production process of packaging bags needs to go through a paper cutting process, that is, the paper is cut and the excess is removed through a cutting device so that the paper has the preliminary outline of the packaging box. Then, the cut paper is gradually folded again through a folding device to form the packaging box.

[0004] However, after the paper is cut by the cutting equipment, the surface of the paper may become uneven. Due to the poor compatibility between the cutting equipment and the folding equipment, in the actual production process, a conveying device is usually used to transport the cut paper to the folding equipment. However, due to the uneven surface of the paper, if the cut paper directly passes through the conveying device to the folding equipment, it will affect the normal operation of the folding equipment. For example: the crease of the paper folded by the folding equipment deviates too much from the preset crease of the paper, resulting in the problem that the formed packaging box cannot meet the design requirements. Utility Model Content

[0005] In order to improve the flatness of the surface of paper after cutting, the present application provides a paper flatness trimming device for a packaging box.

[0006] The present application provides a paper flatness trimming device for a packaging box, which adopts the following technical solution:

[0007] A paper flatness trimming device for a packaging box comprises a frame, a conveying roller group and a trimming assembly, wherein one end of the frame is a loading end, and the other end is a unloading end, the conveying roller group is rotatably supported on the frame, and the trimming assembly is arranged on the frame, the trimming assembly comprises a limit plate and a plurality of trimming balls, the limit plate is erected above the frame along the length direction of the frame, a plurality of trimming balls are rotatably supported on the limit plate, a gap is arranged between the limit plate and the conveying roller group for paper to pass through, when paper passes through the gap, the trimming ball abuts against the surface of the paper, and when no paper passes through the gap, the trimming ball abuts against the conveying roller group.

[0008] By adopting the above technical scheme, the conveying roller group provides power for conveying the paper along the feeding end of the frame to the unloading end of the frame; the limit plate is used to limit the path of the paper conveyed along the conveying roller group, and at the same time, a plurality of trimming balls are used to trim the surface of the paper conveyed along the conveying roller group. When the paper passes along the gap, through the cooperation of a plurality of trimming balls and the conveying roller group, the two surfaces of the paper respectively abut against the trimming balls and the conveying roller group, and the trimming balls and the conveying roller group provide rolling friction for the paper, thereby achieving the purpose of trimming the surface of the paper, and playing a positive guiding role in improving the flatness of the surface of the cut paper.

[0009] Preferably, the limiting plate is provided with a plurality of accommodating holes, and the number of the accommodating holes is the same as the number of the trimming balls.

[0010] By adopting the above technical solution, the placement position of the trimming ball along the limiting plate is limited by the accommodating hole, thereby reducing the probability of the trimming ball falling off along the limiting plate when trimming the surface of the paper.

[0011] Preferably, the diameter of the plurality of accommodating holes at one end facing the conveying roller group is smaller than the diameter of the plurality of accommodating holes at one end facing away from the conveying roller group.

[0012] By adopting the above technical solution, since the diameter of the end of the accommodating hole facing the conveying roller group is smaller than the diameter of the end away from the conveying roller group, a supporting force is provided for the trimming ball, reducing the probability of the trimming ball falling onto the conveying roller group along the accommodating hole.

[0013] Preferably, the conveying roller group is arranged to be inclined downward from an end away from the limiting plate to an end close to the limiting plate.

[0014] By adopting the above technical solution, since the conveying roller group is inclined toward the limit plate, when the paper is conveyed along the conveying roller group, a force toward the limit plate is provided for the paper, thereby causing the paper to deviate in the direction of the limit plate, thereby reducing the probability of the paper being deviated too much along the conveying roller group when the paper is conveyed along the conveying roller group.

[0015] Preferably, a glass plate is provided along the length direction of the frame near one end of the limiting plate, and when the paper passes along the conveying roller group, the side wall of the paper abuts against the glass plate.

[0016] By adopting the above technical solution and taking advantage of the glass plate having a lower friction coefficient, when the paper is transported along the conveying roller group, a sliding friction force is generated between the side wall of the paper and the glass plate, thereby reducing the friction force borne by the side wall of the paper, thereby reducing the probability of burrs on the side wall of the paper due to the large sliding friction force generated between the paper and the side wall of the frame.

[0017] Preferably, the weight of the trimming ball is set between 125g and 165g.

[0018] By adopting the above technical solution, the trimming balls within this weight range can provide excellent trimming ability for the paper surface and are highly practical.

[0019] Preferably, an auxiliary feeding assembly is provided at the feeding end of the frame, and the auxiliary feeding assembly includes a feeding wheel, a transmission member and a driving member. The transmission member is rotatably supported on the feeding end of the frame, and the feeding wheel is fixedly connected to the transmission member. When the paper reaches the feeding end of the frame, the driving member drives the feeding wheel to move toward the conveying roller group. When the feeding wheel contacts the paper for 1s, the driving member drives the feeding wheel to separate from the paper.

[0020] By adopting the above technical solution, when the paper just contacts the conveying roller group, only a part of the paper is located on the conveying roller group. When the paper reaches the conveying roller group, the driving member drives the transmission member to carry the feeding wheel to move along the frame, so that the feeding wheel contacts the surface of the paper for 1 second. During this process, the two surfaces of the paper contact the feeding wheel and the conveying roller group respectively, thereby providing rolling friction for the paper to smoothly enter the conveying roller group, thereby reducing the probability of the paper being unable to be smoothly transported to the unloading end of the frame due to slipping due to contact between the paper and the conveying roller group when the paper just reaches the loading end of the frame.

[0021] Preferably, the driving member includes a driving cylinder, which is arranged on the frame. The driving cylinder is used to drive the transmission member to carry the feed wheel to rotate along the frame. When the piston rod of the driving cylinder is extended, the feed wheel moves toward the paper; when the piston cylinder of the driving cylinder is contracted, the feed wheel is separated from the paper.

[0022] By adopting the above technical solution, the transmission member driven by the driving cylinder carries the feed wheel to move, the mechanical structure is simple, and it is easy to control the pressure applied by the feed wheel to the surface of the paper when the feed wheel abuts against the surface of the paper, thereby reducing the probability of indentation or damage to the paper due to excessive pressure applied by the feed wheel on the paper.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When the paper passes through the gap, through the cooperation of several trimming balls and conveying roller groups, the two surfaces of the paper are respectively in contact with the trimming balls and conveying roller groups, and the trimming balls and conveying roller groups are used to provide rolling friction for the paper, so as to achieve the purpose of trimming the paper surface and play a positive guiding role in improving the flatness of the surface of the cut paper;

[0025] 2. Since the conveying roller group is inclined toward the limit plate, the paper is provided with a force toward the limit plate, so that the paper is deflected toward the limit plate, reducing the probability of excessive deviation of the paper along the conveying roller group when the paper is conveyed along the conveying roller group;

[0026] 3. The driving member drives the transmission member to carry the feed wheel and move along the frame, so that the feed wheel contacts the surface of the paper for 1 second, thereby providing rolling friction for the paper to smoothly enter the conveying roller group, and reducing the probability that the paper cannot be smoothly conveyed to the unloading end of the frame due to slipping between the paper and the conveying roller group when the paper just arrives at the feeding end of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a paper flatness trimming device for a packaging box in an embodiment of the present application.

[0028] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 2. Conveying roller set; 21. Roller body; 3. Trimming assembly; 31. Limiting plate; 32. Trimming ball; 4. Gap; 5. Accommodating hole; 6. Glass plate; 7. Auxiliary feeding assembly; 71. Feeding wheel; 72. Conveying member; 721. Rotating shaft; 722. Support seat; 73. Driving member; 731. Driving cylinder; 8. Mounting seat; 9. Eccentric rod. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] The present application embodiment discloses a paper flatness trimming device for a packaging box. Figure 1 and Figure 2 A paper flatness trimming device for a packaging box comprises a frame 1, a conveying roller group 2 and a trimming assembly 3. One end of the frame 1 is a feeding end, and the other end is a unloading end. The conveying roller group 2 is rotatably carried on the frame 1. The conveying roller group 2 is arranged to be tilted downward from an end away from a limiting plate 31 to an end close to the limiting plate 31. The trimming assembly 3 is arranged on the frame 1. The trimming assembly 3 comprises a limiting plate 31 and a plurality of trimming balls 32. The limiting plate 31 is erected above the frame 1 along the length direction of the frame 1. A plurality of trimming balls 32 are rotatably carried on the limiting plate 31. A gap 4 for paper to pass through is arranged between the limiting plate 31 and the conveying roller group 2. When paper passes through the gap 4, the trimming ball 32 abuts against the surface of the paper. When no paper passes through the gap 4, the trimming ball 32 abuts against the conveying roller group 2.

[0032] Specifically, the conveying roller group 2 is composed of a plurality of roller bodies 21, which are rotatably carried on the frame 1 along the width direction of the frame 1, and the plurality of roller bodies 21 are distributed at the same interval from the feeding end of the frame 1 to the unloading end of the frame 1. At the same time, the plurality of roller bodies 21 can be driven by a motor pulley transmission mechanism, so that the plurality of roller bodies 21 rotate at the same speed along the frame 1, providing power for the paper to be conveyed from the feeding end of the frame 1 to the unloading end of the frame 1.

[0033] Correspondingly, because the roller body 21 is inclined toward the limit plate 31, when the paper is conveyed along the roller body 21, a force is provided to the paper toward the limit plate 31, so that the paper is deviated in the direction of the limit plate 31, thereby reducing the probability of the paper being deviated too much along the roller body 21 when the paper is conveyed along the roller body 21.

[0034] It should be noted here that the motor pulley transmission mechanism is a conventional power transmission component, and its specific composition and working principle will not be described in detail here.

[0035] The implementation principle of a paper flatness trimming device for a packaging box in an embodiment of the present application is as follows: a roller body 21 is used to provide power for conveying the paper along the loading end of the frame 1 to the unloading end of the frame 1; a limit plate 31 is used to limit the path of the paper conveyed along the roller body 21, and at the same time, a plurality of trimming balls 32 are used to trim the surface of the paper conveyed along the roller body 21. When the paper passes along the gap 4, the two surfaces of the paper are respectively in contact with the trimming balls 32 and the roller body 21 through the cooperation of the plurality of trimming balls 32 and the roller body 21. The trimming balls 32 and the roller body 21 provide rolling friction for the paper, thereby achieving the purpose of trimming the surface of the paper and playing a positive guiding role in improving the flatness of the surface of the paper after cutting.

[0036] Reference Figure 1 and Figure 2 A plurality of accommodating holes 5 are provided on the limiting plate 31 , and the number of the accommodating holes 5 is the same as the number of the trimming balls 32 .

[0037] Specifically, a mounting seat 8 is installed on one side of the frame 1 along the length direction, and three groups of mounting seats 8 are arranged. The three groups of mounting seats 8 are distributed at equal intervals along the length direction of the frame 1. At the same time, the limit plate 31 is fixed to the mounting seat 8 by bolts. Through the supporting effect of the three groups of mounting seats 8, the limit plate 31 is stably mounted above the frame 1, thereby improving the stability of the limit plate 31 when it is installed on the frame 1.

[0038] Furthermore, a plurality of accommodating holes 5 are arranged in a cross-staggered manner along the length direction of the limiting plate 31. The accommodating holes 5 are formed by penetrating the thickness direction of the limiting plate 31 for placing the trimming balls 32. The placement position of the trimming balls 32 along the limiting plate 31 is limited by the accommodating holes 5, thereby reducing the probability of the trimming balls 32 falling off along the limiting plate 31 when trimming the surface of the paper.

[0039] Correspondingly, the diameter of one end of the plurality of accommodating holes 5 facing the conveying roller group 2 is smaller than the diameter of the end away from the conveying roller group 2. Because the diameter of one end of the accommodating holes 5 facing the conveying roller group 2 is smaller than the diameter of the end away from the conveying roller group 2, a supporting force is provided for the trimming balls 32, thereby reducing the probability of the trimming balls 32 falling onto the conveying roller group 2 along the accommodating holes 5.

[0040] Reference Figure 1 and Figure 2 A glass plate 6 is provided along the length direction of the frame 1 near one end of the limiting plate 31 . When the paper passes along the conveying roller set 2 , the side wall of the paper abuts against the glass plate 6 .

[0041] Specifically, the length of the glass plate 6 is the same as that of the frame 1 , and the width of the glass plate 6 is the same as the gap 4 between the roller body 21 and the limiting plate 31 . The glass plate 6 can be fixed to the frame 1 by gluing.

[0042] Its function is to take advantage of the glass plate 6 having a lower friction coefficient. When the paper is transported along the roller body 21, a sliding friction force is generated between the side wall of the paper and the glass plate 6, so that the friction force borne by the side wall of the paper is smaller, thereby reducing the probability of burrs on the side wall of the paper due to the large sliding friction force generated between the paper and the side wall of the frame 1.

[0043] Reference Figure 1 or Figure 2 The weight of the trimming ball 32 is set between 125g and 165g.

[0044] The flatness of the paper is set to be poor, good and excellent. The smoothness of the paper passing along the gap 4 is set to be stuck, unobstructed and smooth. The weight of the trimming ball 32 (g, SI unit) is used as the independent variable. The following test data and the simple table (1) are combined to illustrate the above.

[0045] Weight of trimmed ball (g) Leveling Smoothness 95 Difference Smooth 105 good Smooth 115 good Smooth 125 good Smooth 135 excellent Smooth 145 excellent No Obstacles 155 excellent No Obstacles 165 excellent No Obstacles 175 good No Obstacles 185 Difference Stuck and stopped 195 Difference Stuck and stopped

[0046] Brief table (1)

[0047] As shown in the simplified table (1), when the weight of the trimming ball 32 is in the range of 125 g to 165 g, the trimming ball 32 can trim the surface of the paper well, and the paper can pass between the trimming ball 32 and the roller body 21 relatively unhindered. However, it should be noted that due to the deviation of the size of the trimming ball 32, the rolling friction generated between the trimming ball 32 and the accommodating hole 5, and the friction coefficient of the trimming ball 32 itself, this range is only a preferred selection range in this embodiment.

[0048] Reference Figure 1 and Figure 2 The feeding end of the frame 1 is provided with an auxiliary feeding assembly 7, which includes a feeding wheel 71, a transmission member and a driving member 73. The transmission member is rotatably carried on the feeding end of the frame 1, and the feeding wheel 71 is fixedly connected to the transmission member. When the paper reaches the feeding end of the frame 1, the driving member 73 drives the feeding wheel 71 to move toward the conveying roller group 2. When the feeding wheel 71 contacts the paper for 1s, the driving member 73 drives the feeding wheel 71 to separate from the paper.

[0049] Specifically, the transmission member includes a rotating shaft 721 and a bearing seat 722. The rotating shaft 721 is rotatable along the width direction of the frame 1 and is carried on the feeding end of the frame 1. In the present embodiment, two bearing seats 722 are provided, and the two bearing seats 722 are slidably matched with the rotating shaft 721. Correspondingly, two feeding wheels 71 are provided, and the two feeding wheels 71 are respectively mounted on the bearing seats 722, and the feeding wheels 71 are rotatably connected with the bearing seats 722. After the bearing seat 722 is adjusted to a set position along the rotating shaft 721, the bearing seat 722 can be fixed to the rotating shaft 721 by bolts, so as to improve the stability of the feeding wheel 71 when rotating along the rotating shaft 721.

[0050] Therefore, when the paper just contacts the roller body 21, only a part of the paper is located on the roller body 21. When the paper reaches the roller body 21, the driving member 73 drives the transmission member to carry the feed wheel 71 to move along the frame 1, so that the feed wheel 71 contacts the surface of the paper for 1s (SI unit, second). During this process, the two surfaces of the paper contact the feed wheel 71 and the roller body 21 respectively, thereby providing rolling friction for the paper to smoothly enter the roller body 21, reducing the probability of the paper being unable to be smoothly transported to the unloading end of the frame 1 due to slipping due to contact between the paper and the roller body 21 when the paper just reaches the loading end of the frame 1.

[0051] Furthermore, the driving member 73 includes a driving cylinder 731, and the driving cylinder 731 can be a motor screw drive mechanism. The driving cylinder 731 is arranged on the frame 1, and the driving cylinder 731 is used to drive the transmission member to carry the feed wheel 71 to rotate along the frame 1. When the piston rod of the driving cylinder 731 is extended, the feed wheel 71 moves toward the paper; when the piston cylinder of the driving cylinder 731 is retracted, the feed wheel 71 is separated from the paper.

[0052] Specifically, the driving cylinder 731 is installed on the side wall of the frame 1 along the feeding end of the frame 1, and the piston rod of the driving cylinder 731 is upward in the vertical direction. At the same time, the base of the driving cylinder 731 is hinged to the frame 1, so that the driving cylinder 731 can swing along the frame 1.

[0053] At the same time, an eccentric rod 9 is fixedly connected to one end of the rotating shaft 721 close to the driving cylinder 731, and the eccentric rod 9 deviates from the geometric center of the end face of the rotating shaft 721. At the same time, a hinge seat is coaxially fixed to the front end of the piston rod of the driving cylinder 731, and the eccentric rod 9 rotates in coordination with the hinge seat.

[0054] Therefore, when the piston rod of the driving cylinder 731 contracts, the piston rod of the driving cylinder 731 pulls the eccentric rod 9 to rotate, so that the rotating shaft 721 drives the supporting seat 722 to carry the feeding wheel 71 to move toward the roller body 21 until the two surfaces of the paper are respectively in contact with the roller body 21 and the feeding wheel 71.

[0055] Correspondingly, when the piston rod of the driving cylinder 731 is extended, the piston rod of the driving cylinder 731 pushes the eccentric rod 9 to rotate, so that the rotating shaft 721 drives the supporting seat 722 to carry the feeding wheel 71 and separate it from the surface of the paper. The driving cylinder 731 drives the transmission member to carry the feeding wheel 71 to move. The mechanical structure is simple and it is easy to control the pressure applied by the feeding wheel 71 to the surface of the paper when the feeding wheel 71 is in contact with the surface of the paper, thereby reducing the probability of indentation or damage to the paper due to excessive pressure applied by the feeding wheel 71 to the paper.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A paper flatness trimming device for a packaging box, characterized in that: The invention comprises a frame (1), a conveying roller group (2) and a trimming assembly (3), wherein one end of the frame (1) is a feeding end and the other end is a unloading end, the conveying roller group (2) is rotatably supported on the frame (1), the trimming assembly (3) is arranged on the frame (1), the trimming assembly (3) comprises a limit plate (31) and a plurality of trimming balls (32), the limit plate (31) is erected above the frame (1) along the length direction of the frame (1), the plurality of trimming balls (32) are rotatably supported on the limit plate (31), a gap (4) for paper to pass through is arranged between the limit plate (31) and the conveying roller group (2), when paper passes through the gap (4), the trimming balls (32) abut against the surface of the paper, when no paper passes through the gap (4), the trimming balls (32) abut against the conveying roller group (2).

2. A paper flatness trimming device for a packaging box according to claim 1, characterized in that: The limiting plate (31) is provided with a plurality of accommodating holes (5), and the number of the accommodating holes (5) is the same as the number of the trimming balls (32).

3. A paper flatness trimming device for a packaging box according to claim 2, characterized in that: The diameter of a plurality of the accommodating holes (5) at one end facing the conveying roller group (2) is smaller than the diameter at one end facing away from the conveying roller group (2).

4. The paper flatness trimming device for packaging boxes according to claim 1, characterized in that: The conveying roller group (2) is arranged to be inclined downward from an end away from the limiting plate (31) to an end close to the limiting plate (31).

5. The paper flatness trimming device for packaging boxes according to claim 1, characterized in that: The frame (1) near one end of the limit plate (31) is provided with a glass plate (6) along the length direction, and when the paper passes along the conveying roller group (2), the side wall of the paper abuts against the glass plate (6).

6. The paper flatness trimming device for packaging boxes according to claim 1, characterized in that: The weight of the trimming ball (32) is set between 125g and 165g.

7. The paper flatness trimming device for packaging boxes according to claim 1, characterized in that: The feeding end of the frame (1) is provided with an auxiliary feeding assembly (7), the auxiliary feeding assembly (7) comprising a feeding wheel (71), a transmission member and a driving member (73), the transmission member being rotatably supported on the feeding end of the frame (1), the feeding wheel (71) being fixedly connected to the transmission member, when the paper reaches the feeding end of the frame (1), the driving member (73) drives the feeding wheel (71) to move toward the conveying roller group (2), and when the feeding wheel (71) contacts the paper for 1 second, the driving member (73) drives the feeding wheel (71) to separate from the paper.

8. The paper flatness trimming device for packaging boxes according to claim 7, characterized in that: The driving member (73) comprises a driving cylinder (731), wherein the driving cylinder (731) is arranged on the frame (1), and the driving cylinder (731) is used to drive the transmission member to carry the feeding wheel (71) to rotate along the frame (1); when the piston rod of the driving cylinder (731) is extended, the feeding wheel (71) moves toward the paper; when the piston cylinder of the driving cylinder (731) is retracted, the feeding wheel (71) is separated from the paper.

Images