Two-way indentation device for paperboard

Abstract

The utility model belongs to the technical field of paperboard creasing machines, and particularly relates to a bidirectional paperboard creasing device. Comprising a rack; the first conveying mechanism is mounted on the rack; the first creasing mechanism is located at the tail end of the first conveying mechanism; the second creasing mechanism is located at the tail end of the first conveying mechanism; the first creasing mechanism and the second creasing mechanism each comprise a supporting base located at the tail end of the first conveying mechanism, a pressing wheel located above the supporting base and a creasing mold arranged on the supporting base. The first creasing mechanism and the second creasing mechanism are used for creasing a paperboard, two creases with opposite bending directions can be generated on one paperboard at the same time, the paperboard does not need to be reversely pressed to form another crease, time and labor are saved, the working efficiency is improved, the pressed creases enable the paperboard to have a better folding effect, the creases are not prone to being broken, and the production efficiency is improved. And the product qualification rate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cardboard creasing machines, in particular to a cardboard bidirectional creasing device. Background Art

[0002] There are different types of cardboard according to different usage scenarios. For example, corrugated cardboard is usually made of plant fibers, so it is relatively crisp. According to different usage requirements, it is necessary to create indentations with different bending directions to facilitate folding the cardboard. These indentations are usually pressed using a cardboard indentation device. For example, when the cardboard needs to be folded into a Z shape, two indentations with opposite bending directions need to be pressed on the same cardboard.

[0003] In the prior art, the indentation made by the cardboard indentation device can usually cause the cardboard to bend in one direction, and then the cardboard is removed, turned over and repositioned, and then put into the cardboard indentation device again to make an indentation at another position of the cardboard. The work efficiency is low, time-consuming and labor-intensive, and because the cardboard material is relatively brittle, the cardboard surface is prone to cracks when the indentation is pressed, reducing the processing qualification rate. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems and provide a bidirectional creasing device for paperboard. By pressing the indentations on the paperboard through the first indentation mechanism and the second indentation mechanism, two creases with opposite bending directions can be simultaneously generated on one paperboard, without turning the paperboard over to press out another crease, thus saving time and labor and improving work efficiency. Moreover, the pressed creases enable the paperboard to have a better folding effect, the creases are not easy to break, and the product qualification rate is improved.

[0005] In view of this, the utility model provides a cardboard bidirectional creasing device, comprising a frame and also comprising:

[0006] A first conveying mechanism is installed on the frame, and the first conveying mechanism includes a head end and a tail end;

[0007] A first creasing mechanism is installed on the frame and is located at the tail end of the first conveying mechanism;

[0008] A second creasing mechanism is installed on the frame and is located at the tail end of the first conveying mechanism;

[0009] Among them, the first indentation mechanism and the second indentation mechanism both include a support seat located at the tail end of the first conveying mechanism, a pressure wheel located above the support seat and an indentation mold arranged on the support seat, an accommodating gap is formed between the indentation mold and the pressure wheel, an arc-shaped convex ring is arranged on the outer peripheral wall of the pressure wheel of the first indentation mechanism, and first shoulders are formed on both sides of the arc-shaped convex ring, an arc-shaped groove is arranged on the upper surface of the indentation mold of the first indentation mechanism, the arc-shaped convex ring is arranged in the arc-shaped groove, and supporting convex strips corresponding to the first shoulder are arranged on both sides of the arc-shaped groove on the upper surface of the indentation mold of the first indentation mechanism, an arc-shaped ring groove is arranged on the outer peripheral wall of the pressure wheel of the second indentation mechanism, and supporting convex rings are arranged on both sides of the arc-shaped ring groove on the outer peripheral wall of the pressure wheel of the second indentation mechanism, an arc-shaped convex strip is arranged on the upper surface of the indentation mold of the second indentation mechanism, and second shoulders corresponding to the supporting convex ring are formed on both sides of the arc-shaped convex strip, and the arc-shaped convex strip is arranged in the arc-shaped ring groove.

[0010] In the above solution, further, the first transmission mechanism includes:

[0011] A plurality of first rollers are arranged and installed on the frame;

[0012] The driving mechanism is installed at one end of the plurality of first rollers and is used for driving the plurality of first rollers to rotate simultaneously.

[0013] In the above scheme, further, a second conveying mechanism located above the first conveying mechanism is installed on the frame, and the second conveying mechanism is close to the tail end of the first conveying mechanism, and the second conveying mechanism includes:

[0014] A plurality of second rollers are arranged and installed on the frame, and the second rollers are located above the first rollers.

[0015] In the above scheme, further, it also includes two guide plates located at the head end of the first conveying mechanism, the two guide plates are symmetrically mounted on the frame, and the guide plates include:

[0016] A guide portion, located above the plurality of first rollers;

[0017] The connecting part is located at one end of the plurality of first rollers, is bent and connected to the bottom of the guide part, and is installed on the frame.

[0018] In the above scheme, further, a dovetail protrusion is provided at the bottom of the indentation mold, a dovetail groove is provided on the upper surface of the support seat, and the dovetail protrusion is clamped in the dovetail groove.

[0019] In the above scheme, further, the pressing wheel of the first indentation mechanism is connected to the pressing wheel of the second indentation mechanism by a bidirectional screw rod, and the supporting seat of the first indentation mechanism is also connected to the supporting seat of the second indentation mechanism by a bidirectional screw rod.

[0020] In the above solution, further, a humidifier located above the first conveying mechanism is installed on the frame.

[0021] In the above scheme, further, the frame is provided with a dryer located above the support seat, and the dryer is located behind the pressing wheel.

[0022] The beneficial effects of the utility model are:

[0023] 1. The first creasing mechanism and the second creasing mechanism can simultaneously produce two creases in opposite bending directions on a paperboard, without turning the paperboard over to produce another crease, saving time and effort, improving work efficiency, and the pressed creases make the paperboard have a better folding effect, the creases are not easy to break, and the product qualification rate is improved;

[0024] 2. By setting a bidirectional screw rod, the pressing wheel of the first indentation mechanism and the pressing wheel of the second indentation mechanism can move toward each other, and at the same time, the support seat of the first indentation mechanism and the support seat of the second indentation mechanism can also move toward each other, so as to facilitate the adjustment of the distance between the two folds;

[0025] 3. The humidifier sprays a small amount of water mist on the cardboard to be creased, which stretches the fibers and increases the flexibility of the cardboard when it comes into contact with water. It is not easy to break under pressure, thereby improving the qualified rate of the product. The dryer can dry the cardboard after the crease is pressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a side structural schematic diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall structure of the first indentation mechanism and the second indentation mechanism of the utility model;

[0028] Figure 3 It is a schematic cross-sectional structure diagram of the first indentation mechanism and the second indentation mechanism of the utility model;

[0029] Figure 4 It is a schematic diagram of the top view of the first transmission mechanism and the second transmission mechanism of the utility model;

[0030] Figure 5 The utility model Figure 3 A schematic diagram of the structure at A;

[0031] Figure 6 The utility model Figure 3 A schematic diagram of the structure at B;

[0032] Figure 7 It is a side structural schematic diagram of the guide plate of the utility model.

[0033] The symbols in the figure are:

[0034] 1. First conveying mechanism; 11. First roller; 12. Driving mechanism; 2. First indentation mechanism; 3. Second indentation mechanism; 4. Head end; 5. Tail end; 6. Support seat; 7. Pressing wheel; 8. Indentation mold; 9. Accommodating gap; 10. Arc convex ring; 13. First shoulder; 14. Arc shaped groove; 15. Support convex strip; 16. Arc shaped ring groove; 17. Support convex ring; 18. Arc shaped convex strip; 19. Second shoulder; 20. Second conveying mechanism; 201. Second roller; 21. Guide plate; 211. Guide part; 212. Connecting part; 22. Dovetail convex part; 23. Dovetail groove; 24. Bidirectional screw; 25. Humidifier; 26. Dryer. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0036] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] Embodiment 1:

[0038] This embodiment provides a cardboard bidirectional creasing device, including a frame, and further comprising:

[0039] A first conveying mechanism 1 is mounted on the frame, and the first conveying mechanism 1 includes a head end 4 and a tail end 5;

[0040] The first creasing mechanism 2 is mounted on the frame and is located at the rear end 5 of the first conveying mechanism 1;

[0041] The second creasing mechanism 3 is mounted on the frame and is located at the rear end 5 of the first conveying mechanism 1;

[0042] The first indentation mechanism 2 and the second indentation mechanism 3 both include a support seat 6 located at the tail end 5 of the first conveying mechanism 1, a pressing wheel 7 located above the support seat 6, and an indentation mold 8 arranged on the support seat 6, and an accommodation gap 9 is formed between the indentation mold 8 and the pressing wheel 7. An arcuate convex ring 10 is arranged on the outer peripheral wall of the pressing wheel 7 of the first indentation mechanism 2, and first shoulders 13 are formed on both sides of the arcuate convex ring 10. An arcuate groove 14 is arranged on the upper surface of the indentation mold 8 of the first indentation mechanism 2. The arcuate convex ring 10 is arranged in the arcuate groove 14. The first indentation The upper surface of the indentation mold 8 of the mechanism 2 is provided with supporting ridges 15 corresponding to the first shoulder 13 on both sides of the arc-shaped groove 14, the outer peripheral wall of the pressing wheel 7 of the second indentation mechanism 3 is provided with an arc-shaped annular groove 16, and the outer peripheral wall of the pressing wheel 7 of the second indentation mechanism 3 is provided with supporting convex rings 17 on both sides of the arc-shaped annular groove 16, the upper surface of the indentation mold 8 of the second indentation mechanism 3 is provided with an arc-shaped ridge 18, and second shoulders 19 corresponding to the supporting convex ring 17 are formed on both sides of the arc-shaped ridge 18, and the arc-shaped ridge 18 is arranged in the arc-shaped annular groove 16.

[0043] In the present technical solution, the first conveying mechanism 1 is used to convey paperboard, such as corrugated paperboard, to the first creasing mechanism 2 and the second creasing mechanism 3 .

[0044] The first indentation mechanism 2 is used to press a downwardly bent indentation on the cardboard. Among them, the pressing wheel 7 and the indentation mold 8 of the first indentation mechanism 2 can be made of metal. The cardboard is conveyed to the accommodation gap 9 on the first indentation mechanism 2 by the first conveying mechanism 1. The friction between the cardboard and the pressing wheel 7 causes the pressing wheel 7 to rotate, and the cardboard is located between the arc-shaped convex ring 10 and the arc-shaped groove 14 on the pressing wheel 7, so that the cardboard is pressed into a downward groove. At the same time, the first shoulders 13 on both sides of the arc-shaped convex ring 10 are in contact with the upper surface of the cardboard, and the supporting convex strips 15 are in contact with the lower surface of the cardboard, so that upward grooves are generated on both sides of the cardboard groove. The pressed creases make the cardboard have a better folding effect, and the creases are not easy to break. The surface of the supporting convex strips 15 is an arc surface, and the diameter of the supporting convex strips 15 is smaller than the diameter of the arc-shaped convex ring 10.

[0045] The second indentation mechanism 3 is used to press an upwardly bent indentation on the cardboard, and the fold produced by the second indentation mechanism 3 is parallel to the fold produced by the first indentation mechanism 2. Among them, the pressing wheel 7 and the indentation mold 8 of the second indentation mechanism 3 can be made of metal. The cardboard is conveyed to the accommodation gap 9 on the second indentation mechanism 3 by the first conveying mechanism 1. The friction between the cardboard and the pressing wheel 7 causes the pressing wheel 7 to rotate, and the cardboard is located between the arc-shaped annular groove 16 and the arc-shaped convex strip 18 on the pressing wheel 7, so that the cardboard is pressed out to bulge upward. At the same time, the second shoulders 19 on both sides of the arc-shaped convex strip 18 are in contact with the lower surface of the cardboard, and the supporting convex rings 17 on both sides of the arc-shaped annular groove 16 are in contact with the upper surface of the cardboard, so that downward grooves are generated on both sides of the bulge of the cardboard. The pressed folds make the cardboard have a better folding effect, and the folds are not easy to break. The surface of the supporting convex ring 17 is an arc surface, and the diameter of the supporting convex ring 17 is smaller than the diameter of the arc-shaped annular groove 16.

[0046] Therefore, this embodiment can simultaneously produce two creases with opposite bending directions on one paperboard, without turning the paperboard over to press out another crease, saving time and effort and improving work efficiency. In addition, the creases pressed out by the first pressing mechanism 2 and the second pressing mechanism 3 enable the paperboard to have a better folding effect, and the creases are not prone to breakage, thereby improving the product qualification rate.

[0047] There may be a plurality of the first indentation mechanism 2 and the second indentation mechanism 3 .

[0048] Furthermore, the first transmission mechanism 1 comprises:

[0049] A plurality of first rollers 11 are arranged and installed on the frame;

[0050] The driving mechanism 12 is installed at one end of the plurality of first rollers 11 and is used to drive the plurality of first rollers 11 to rotate simultaneously.

[0051] In the present technical solution, the driving mechanism 12 can be a motor, and the same end of the multiple first rollers 11 can be coordinated through a chain sprocket. The driving mechanism 12 can make the multiple first rollers 11 rotate simultaneously to transfer the cardboard to the accommodating gap 9 of the first creasing mechanism 2 and the second creasing mechanism 3.

[0052] Furthermore, a second conveying mechanism 20 located above the first conveying mechanism 1 is installed on the frame, and the second conveying mechanism 20 is close to the tail end 5 of the first conveying mechanism 1, and the second conveying mechanism 20 includes:

[0053] A plurality of second rollers 201 are arranged and installed on the frame, and the second rollers 201 are located above the first rollers 11 .

[0054] In the present technical solution, the second conveying mechanism 20 is used to stabilize the position of the cardboard, and the rotation direction of the multiple first rollers 11 is opposite to that of the multiple second rollers 201. By placing the cardboard into the gap between the first conveying mechanism 1 and the second conveying mechanism 20, the friction force of the multiple first rollers 11 and the multiple second rollers 201 on the cardboard is utilized, so that the cardboard is stably transported to the accommodating gap 9 of the first creasing mechanism 2 and the second creasing mechanism 3, thereby preventing the cardboard from slipping and failing to smoothly enter the accommodating gap 9.

[0055] A driving mechanism 12 may also be provided on the second conveying mechanism 20 to improve the conveying effect.

[0056] Embodiment 2:

[0057] This embodiment provides a cardboard bidirectional creasing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] It also includes two guide plates 21 located at the head end 4 of the first conveying mechanism 1, and the two guide plates 21 are symmetrically mounted on the frame. The guide plates 21 include:

[0059] The guide portion 211 is located above the plurality of first rollers 11;

[0060] The connecting portion 212 is located at one end of the plurality of first rollers 11 . The connecting portion 212 is bent and connected to the bottom of the guiding portion 211 , and the connecting portion 212 is installed on the frame.

[0061] In the present technical solution, the length of the second conveying mechanism 20 is smaller than that of the first conveying mechanism 1 , and two guide plates 21 are installed on the first conveying mechanism 1 . The guide plates 21 are used to guide and position the paperboard to prevent the paperboard from being offset.

[0062] A plurality of strip holes can be provided on the connection part 212 of the two guide plates 21. The connection part 212 and the frame can be connected by screws. The strip holes can play a role of front and rear adjustment, and are used to adjust the position of the guide plates 21, so as to accurately locate the fold position of the cardboard.

[0063] Embodiment 3:

[0064] This embodiment provides a cardboard bidirectional creasing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] The bottom of the indentation mold 8 is provided with a dovetail protrusion 22 , and the upper surface of the support seat 6 is provided with a dovetail groove 23 , and the dovetail protrusion 22 is clamped in the dovetail groove 23 .

[0066] In this technical solution, the support seat 6 is used to fix and support the creasing mold 8, and the dovetail protrusion 22 is clamped in the dovetail groove 23. When the creasing mold 8 is damaged or the bending direction of the cardboard needs to be changed, it is convenient to install and replace the creasing mold 8.

[0067] Embodiment 4:

[0068] This embodiment provides a cardboard bidirectional creasing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] The pressing wheel 7 of the first indentation mechanism 2 is connected to the pressing wheel 7 of the second indentation mechanism 3 via a bidirectional screw rod 24 , and the supporting seat 6 of the first indentation mechanism 2 is also connected to the supporting seat 6 of the second indentation mechanism 3 via a bidirectional screw rod 24 .

[0070] In the present technical solution, the bidirectional screw rod 24 can be an existing conventional bidirectional screw rod 24, which can make the pressing wheel 7 of the first creasing mechanism 2 and the pressing wheel 7 of the second creasing mechanism 3 move toward each other, and at the same time, the support seat 6 of the first creasing mechanism 2 and the support seat 6 of the second creasing mechanism 3 also move toward each other, so as to facilitate the adjustment of the distance between the two folds to adapt to cardboards with different usage requirements.

[0071] Embodiment 5:

[0072] This embodiment provides a cardboard bidirectional creasing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] A humidifier 25 located above the first conveying mechanism 1 is installed on the frame.

[0074] In the technical solution, the humidifier 25 can be an existing humidifier 25 that can generate water mist. There can be multiple humidifiers 25, and the humidifier 25 can be directly above the position where the crease is to be pressed on the paperboard, and the humidifier 25 can be adjusted left and right on the rack.

[0075] When the cardboard is dry, the cardboard fibers are relatively brittle. When it is under pressure, stress concentration is likely to occur, and the fibers are likely to break, resulting in damage to the cardboard to be indented at the indentation location. The humidifier 25 sprays a small amount of water mist on the cardboard to be creased, which stretches the fibers and increases the flexibility of the cardboard after it meets water, making it less likely to break under pressure, thereby further improving the qualified rate of the product.

[0076] Furthermore, a dryer 26 is provided on the frame and is located above the support seat 6 , and the dryer 26 is located behind the pressing wheel 7 .

[0077] In the present technical solution, the dryer 26 may be an existing dryer 26 capable of producing hot air.

[0078] After the paperboard moistened by the humidifier 25 is creased by the first creasing mechanism 2 and the second creasing mechanism 3, the dryer 26 is used to dry the surface of the paperboard.

[0079] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A cardboard bidirectional creasing device, characterized in that: Includes rack, also includes: A first conveying mechanism (1) is mounted on the frame, and the first conveying mechanism (1) comprises a head end (4) and a tail end (5); A first creasing mechanism (2) is mounted on the frame and is located at the rear end (5) of the first conveying mechanism (1); A second creasing mechanism (3) is mounted on the frame and is located at the rear end (5) of the first conveying mechanism (1); Wherein, the first indentation mechanism (2) and the second indentation mechanism (3) both comprise a support seat (6) located at the rear end (5) of the first conveying mechanism (1), a pressing wheel (7) located above the support seat (6) and an indentation mold (8) arranged on the support seat (6), a receiving gap (9) is formed between the indentation mold (8) and the pressing wheel (7), an arc-shaped convex ring (10) is arranged on the outer peripheral wall of the pressing wheel (7) of the first indentation mechanism (2), and first shoulders (13) are respectively formed on both sides of the arc-shaped convex ring (10), an arc-shaped groove (14) is arranged on the upper surface of the indentation mold (8) of the first indentation mechanism (2), the arc-shaped convex ring (10) is arranged in the arc-shaped groove (14), and the first The upper surface of the indentation mold (8) of the indentation mechanism (2) is provided with supporting convex strips (15) facing the first shoulder (13) on both sides of the arc-shaped groove (14); the outer peripheral wall of the pressing wheel (7) of the second indentation mechanism (3) is provided with an arc-shaped annular groove (16); and the outer peripheral wall of the pressing wheel (7) of the second indentation mechanism (3) is provided with supporting convex rings (17) on both sides of the arc-shaped annular groove (16); the upper surface of the indentation mold (8) of the second indentation mechanism (3) is provided with an arc-shaped convex strip (18); and second shoulders (19) facing the supporting convex ring (17) are formed on both sides of the arc-shaped convex strip (18); and the arc-shaped convex strip (18) is arranged in the arc-shaped annular groove (16).

2. A cardboard bidirectional creasing device according to claim 1, characterized in that: The first transmission mechanism (1) comprises: A plurality of first rollers (11) are arranged and installed on the frame; The driving mechanism (12) is installed at one end of the plurality of first rollers (11) and is used to drive the plurality of first rollers (11) to rotate simultaneously.

3. A cardboard bidirectional creasing device according to claim 2, characterized in that: The frame is provided with a second conveying mechanism (20) located above the first conveying mechanism (1), and the second conveying mechanism (20) is close to the tail end (5) of the first conveying mechanism (1). The second conveying mechanism (20) comprises: A plurality of second rollers (201) are arranged and installed on the frame, and the second rollers (201) are located above the first rollers (11).

4. A cardboard bidirectional creasing device according to claim 2, characterized in that: The machine also includes two guide plates (21) located at the head end (4) of the first conveying mechanism (1), the two guide plates (21) are symmetrically mounted on the frame, and the guide plates (21) include: A guide portion (211) is located above the plurality of first rollers (11); The connecting portion (212) is located at one end of the plurality of first rollers (11), the connecting portion (212) is bent and connected to the bottom of the guiding portion (211), and the connecting portion (212) is installed on the frame.

5. A cardboard bidirectional creasing device according to claim 1, characterized in that: The bottom of the indentation mold (8) is provided with a dovetail protrusion (22), the upper surface of the support seat (6) is provided with a dovetail groove (23), and the dovetail protrusion (22) is clamped in the dovetail groove (23).

6. A cardboard bidirectional creasing device according to claim 1, characterized in that: The pressing wheel (7) of the first indentation mechanism (2) and the pressing wheel (7) of the second indentation mechanism (3) are connected via a bidirectional screw rod (24), and the supporting seat (6) of the first indentation mechanism (2) and the supporting seat (6) of the second indentation mechanism (3) are also connected via a bidirectional screw rod (24).

7. A cardboard bidirectional creasing device according to claim 1, characterized in that: A humidifier (25) located above the first conveying mechanism (1) is installed on the frame.

8. A cardboard bidirectional creasing device according to claim 7, characterized in that: The frame is provided with a dryer (26) located above the support seat (6), and the dryer (26) is located behind the pressing wheel (7).

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