A creasing and folding mechanism

Abstract

A creasing and folding mechanism comprises a frame, a conveying roller assembly arranged on the frame, a creasing device, a folding device and a stacking device. The workpiece is sequentially conveyed to the creasing device, the folding device and the stacking device by the conveying roller assembly; when the workpiece is conveyed to the creasing device, the creasing device acts on the edge of the workpiece to press out a crease; when the workpiece is conveyed to the folding device, the creasing device acts on the folding device so that the folding device folds up the edge of the workpiece through the crease to form a folded edge; when the workpiece is conveyed to the stacking device, the stacking device acts on the folding edge so that the folded edge is stacked on the workpiece. The utility model provides a creasing and folding mechanism. By arranging a creasing device, a folding device and a stacking device, before folding kraft paper, the creasing device first performs creasing at the folding edge, and cooperates with the precise guidance of the folding device so that the folding edge will not be crooked, and there will be no asymmetric folding edge, which greatly improves the folding quality.

Description

Technical Field

[0001] The utility model relates to the technical field of paper production, in particular to a creasing and folding mechanism. Background Art

[0002] Courier bags refer to bags used for packaging documents, receipts, materials, goods, etc. in the express delivery industry. Some courier bags are made of kraft paper. When making courier bags, the edges of the kraft paper need to be folded, and then the folded edges are pasted on the kraft paper for packaging, thereby making courier bags; this process is generally completed manually, but the efficiency of manual folding is low, and it is easy to have asymmetric folds, and the folds are easy to be pasted loosely; in addition, some kraft paper courier bags are made by stamping. Through improved molds, the courier bags will have folded edges when they are stamped, but the quality of the folded edges is average, and they are easy to be distorted and asymmetric.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The utility model aims to provide an indentation and folding mechanism with simple structure, high production efficiency, good folding quality and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] A creasing and folding mechanism designed for this purpose includes a frame, and is characterized in that it also includes a conveying roller assembly, a creasing device, a folding device and a stacking device arranged on the frame, and the workpiece is conveyed to the creasing device, the folding device and the stacking device in sequence through the conveying roller assembly; when the workpiece is conveyed to the creasing device, the creasing device acts on the edge of the workpiece to press out a crease; when the workpiece is conveyed to the folding device, it acts on the folding device so that the folding device folds the edge of the workpiece through the crease to form a folded edge; when the workpiece is conveyed to the stacking device, the stacking device acts on the folded edge so that the folded edge is stacked on the workpiece.

[0006] The creasing device includes a driving assembly, an upper creasing wheel and a lower creasing wheel. The driving assembly drives and connects the upper creasing wheel, and the upper creasing wheel is located above the lower creasing wheel. When the workpiece is conveyed to the creasing device, the driving assembly drives the upper creasing wheel downward, and the upper creasing wheel presses the edge of the workpiece onto the lower creasing wheel to press a crease on the edge of the workpiece.

[0007] The upper pressing wheel is provided with a first pressing edge, and the lower pressing wheel is provided with a groove at a position corresponding to the first pressing edge; when the driving component drives the upper pressing wheel to press downward, the first pressing edge presses the edge of the workpiece onto the groove.

[0008] The folding device includes a first roller and a second roller, and the first roller is tilted above the second roller; when the workpiece is transported to the folding device, it acts on the first roller and the second roller to rotate the first roller and the second roller. When the first roller and the second roller rotate, they act on the crease of the workpiece to fold the edge of the workpiece to form a fold.

[0009] The first roller is provided with a first extrusion edge, the second roller is provided with a second extrusion edge and a roller, the first extrusion edge is arranged obliquely, the second extrusion edge is arranged horizontally, the lower end of the first extrusion edge abuts against the second extrusion edge, a passing position is formed between the first extrusion edge and the second extrusion edge, and a folding position is formed between the first extrusion edge and the roller; when the workpiece is conveyed to the folding device, the edge of the workpiece passes through the passing position and acts on the first extrusion edge and the second extrusion edge, so that the first roller and the second roller rotate, the lower end of the first extrusion edge acts on the fold mark of the workpiece, and cooperates with the roller to fold the edge of the workpiece, and forms a fold at the folding position.

[0010] The folding device also includes a first mounting plate assembly, which is mounted on the frame. The first mounting plate assembly is provided with a first rotating shaft and a second rotating shaft, the first rotating shaft is cooperatively connected with the first roller, and the second rotating shaft is cooperatively connected with the second roller.

[0011] The folding device includes a second mounting plate assembly and a folding block. The second mounting plate assembly is mounted on a frame, and the folding block is mounted on the second mounting plate assembly. A folding groove is formed between the folding block and the second mounting plate assembly. A second pressure edge is provided on the top of the folding groove. The height of the second pressure edge gradually decreases along the conveying direction of the workpiece. When the workpiece is conveyed to the folding device, the edge of the workpiece passes through the folding groove, and the second pressure edge acts on the folded edge to make the folded edge overlap on the workpiece.

[0012] A conveying groove is also formed between the hemming block and the second mounting plate assembly, and the conveying groove is communicated with the hemming groove; after the hemming is folded on the workpiece, the edge of the workpiece is conveyed out of the hemming device along the conveying groove.

[0013] It also includes an upper pressure roller device and a lower pressure roller assembly arranged on the frame, and the lower pressure roller assembly is connected to the conveying roller assembly; the workpiece passes through the folding device and is conveyed to the lower pressure roller assembly through the conveying roller assembly. When the workpiece is conveyed on the lower pressure roller assembly, the upper pressure roller device presses down on the folded edge to make the folded edge adhere to the workpiece.

[0014] The creasing device also includes a third mounting plate assembly, the driving assembly and the lower pressing wheel are fixed on the third mounting plate assembly, a plurality of sliding shafts are arranged on the frame, and the first mounting plate assembly, the second mounting plate assembly and the third mounting plate assembly are slidably arranged on the corresponding sliding shafts.

[0015] The utility model provides a creasing and folding mechanism. By arranging a creasing device, a folding device and a stacking device, before folding the kraft paper, the creasing device is first used to crease the folded edge, and with the precise guidance of the folding device, the folded edge will not be crooked and will not be asymmetrical, thereby greatly improving the folding quality; in addition, before pasting the folded edge, the stacking device is used to stack the folded edge on the kraft paper, and then a special upper pressure roller device is used to press down on the folded edge, so that the folded edge is adhered to the kraft paper, and the pasting is very firm; therefore, the creasing and folding mechanism can greatly improve the edge sealing quality of the express bag, and can replace manual production, thereby greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the creasing and folding mechanism in one embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall structure of the indentation device in one embodiment of the utility model.

[0018] Figure 3 It is a schematic diagram of the overall structure of the folding device in one embodiment of the utility model.

[0019] Figure 4 It is a schematic diagram of the overall structure of another aspect of the folding device in one embodiment of the utility model.

[0020] Figure 5 It is a cross-sectional view of a folding device in one embodiment of the utility model.

[0021] Figure 6 It is a front view of the folding device in one embodiment of the utility model.

[0022] Figure 7 It is a schematic diagram of the overall structure of the edge stacking device in one embodiment of the utility model.

[0023] Figure 8 It is a schematic diagram of the overall structure of another aspect of the indentation and folding mechanism in one embodiment of the utility model.

[0024] Figure 9-11 The figure is a schematic diagram of the edge sealing process of kraft paper in one embodiment of the utility model.

[0025] Fig.12 It is a cross-sectional view of the creasing and folding mechanism in one embodiment of the utility model. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 1-Figure 12The creasing and folding mechanism includes a frame a, a conveying roller assembly (not shown in the figure) arranged on the frame a, a creasing device 1, a folding device 2 and a folding device 3. The workpiece 4 is sequentially conveyed to the creasing device 1, the folding device 2 and the folding device 3 by the conveying roller assembly; when the workpiece 4 is conveyed to the creasing device 1, the creasing device 1 acts on the edge of the workpiece 4 to press out a fold 5; when the workpiece 4 is conveyed to the folding device 2, it acts on the folding device 2 so that the folding device 2 folds the edge of the workpiece 4 through the fold 5 to form a fold 6; when the workpiece 4 is conveyed to the folding device 3, the folding device 3 acts on the fold 6 so that the fold 6 is folded on the workpiece 4. The workpiece 4 is paper, and the material of the paper is kraft paper.

[0028] The creasing device 1 includes a driving component 7, an upper creasing wheel 8 and a lower creasing wheel 9. The driving component 7 drives and connects the upper creasing wheel 8, and the upper creasing wheel 8 is located above the lower creasing wheel 9. When the workpiece 4 is conveyed to the creasing device 1, the driving component 7 drives the upper creasing wheel 8 to press down, and the upper creasing wheel 8 presses the edge of the workpiece 4 onto the lower creasing wheel 9 so that a crease 5 is pressed out of the edge of the workpiece 4. The driving component 7 includes a first cylinder 30 and a slider 31. The first cylinder 30 drives and connects the slider 31. The upper creasing wheel 8 is installed on the slider 31. The first cylinder 30 drives the upper creasing wheel 8 to move up and down through the slider 31.

[0029] A first pressing edge 10 is provided on the upper pressing wheel 8, and a groove 11 is provided on the lower pressing wheel 9 at a position corresponding to the first pressing edge 10; when the driving component 7 drives the upper pressing wheel 8 to press downward, the first pressing edge 10 presses the edge of the workpiece 4 on the groove 11, and the part of the workpiece 4 pressed on the groove 11 forms a crease 5.

[0030] The folding device 2 includes a first roller 12 and a second roller 13, and the first roller 12 is tilted above the second roller 13; when the workpiece 4 is transported to the folding device 2, it acts on the first roller 12 and the second roller 13 to rotate the first roller 12 and the second roller 13. When the first roller 12 and the second roller 13 rotate, they act on the crease 5 of the workpiece 4 to fold the edge of the workpiece 4 to form a fold 6.

[0031] A first extrusion edge 14 is provided at the bottom of the first roller 12, and a second extrusion edge 15 and a roller 16 are provided at the bottom of the second roller 13. The first extrusion edge 14 is inclined, and the second extrusion edge 15 is horizontally provided. The lower end of the first extrusion edge 14 abuts against the second extrusion edge 15, and a passing position 29 is formed between the first extrusion edge 14 and the second extrusion edge 15, and a folding position 17 is formed between the first extrusion edge 14 and the roller 16; when the workpiece 4 is transported to the folding device 2, the edge of the workpiece 4 passes through the passing position 29 and acts on the first extrusion edge 14 and the second extrusion edge 15, and the edge of the workpiece 4 rubs against the first extrusion edge 14 and the second extrusion edge 15 respectively, so that the first roller 12 and the second roller 13 rotate, and the lower end of the first extrusion edge 14 squeezes the fold 5 of the workpiece 4 when rotating, and cooperates with the extrusion of the roller 16 to fold the edge of the workpiece 4, and forms a folding edge 6 at the folding position 17; the roller 16 is conical, and its peripheral side has a certain taper, and the taper matches the shape of the folding edge 6.

[0032] The folding device 2 also includes a first mounting plate assembly 18, which is mounted on the frame a. The first mounting plate assembly 18 is provided with a first rotating shaft 19 and a second rotating shaft 20. The first rotating shaft 19 is rotationally connected to the first roller 12, and the second rotating shaft 20 is rotationally connected to the second roller 13.

[0033] The stacking device 3 includes a second mounting plate assembly 21 and a stacking block 22. The second mounting plate assembly 21 is mounted on the frame a, and the stacking block 22 is mounted on the second mounting plate assembly 21. An arc-shaped stacking groove 23 is formed between the stacking block 22 and the second mounting plate assembly 21. An arc-shaped second pressing edge 24 is provided on the top of the stacking groove 23. The height of the second pressing edge 24 gradually decreases along the conveying direction of the workpiece 4. When the workpiece 4 is conveyed to the stacking device 3, the edge of the workpiece 4 passes through the stacking groove 23, and the second pressing edge 24 is pressed on the folding edge 6 so that the folding edge 6 is overlapped on the workpiece 4.

[0034] A conveying groove 25 is also formed between the folding block 22 and the second mounting plate assembly 21, and the conveying groove 25 is connected to the folding groove 23; after the folding edge 6 is folded on the workpiece 4 (that is, after the edge of the workpiece 4 passes through the folding groove 23), the edge of the workpiece 4 is conveyed out of the folding device 3 along the conveying groove 25.

[0035] It also includes an upper pressure roller device 26 and a lower pressure roller assembly 27 arranged on the frame a, and the lower pressure roller assembly 27 is connected to the conveying roller assembly; the workpiece 4 passes through the folding device 3 and is conveyed to the lower pressure roller assembly 27 through the conveying roller assembly. When the workpiece 4 is conveyed on the lower pressure roller assembly 27, the upper pressure roller device 26 presses down on the folded edge 6 to make the folded edge 6 adhere to the workpiece 4, and the edge of the workpiece 4 is pre-glued.

[0036] Two upper pressure roller devices 26 are arranged at the front and rear, which include a fixed plate assembly 32, a second cylinder 33, a pressure frame 34 and an upper pressure roller assembly 35. The fixed plate assembly 32 is installed on the frame a, the second cylinder 33 is fixed on the fixed plate assembly 32, the second cylinder 33 drives the connected pressure frame 34, the upper pressure roller assembly 35 is installed on the pressure frame 34, the second cylinder 33 drives the upper pressure roller assembly 35 to press downward through the pressure frame 34, and the upper pressure roller assembly 35 presses the folded edge 6 onto the lower pressure roller assembly 27 so that the folded edge 6 is bonded to the workpiece 4.

[0037] The creasing device 1 also includes a third mounting plate assembly 28, on which the driving assembly 7 and the lower pressing wheel 9 are fixed, and a plurality of sliding shafts are arranged on the frame a. The first mounting plate assembly 18, the second mounting plate assembly 21 and the third mounting plate assembly 28 are slidably arranged on corresponding sliding shafts to adjust the left and right positions of the creasing device 1, the folding device 2 and the stacking device 3 to adapt to workpieces 4 of different widths.

[0038] The sliding shaft includes a first sliding shaft 36, a second sliding shaft 37 and a third sliding shaft 38;

[0039] The first mounting plate assembly 18 includes a first mounting plate 39 and a first linear bearing slider 40 . The first linear bearing slider 40 is slidably mounted on the first sliding shaft 36 , and the first mounting plate 39 is mounted on the first linear bearing slider 40 .

[0040] The second mounting plate assembly 21 includes a second mounting plate 41 and a second linear bearing slider 42 . The second linear bearing slider 42 is slidably mounted on the second sliding shaft 37 , and the second mounting plate 41 is mounted on the second linear bearing slider 42 .

[0041] The third mounting plate assembly 28 includes a third mounting plate 43, a bearing sliding sleeve 44 and a sliding guide block 45. The bearing sliding sleeve 44 is slidably mounted on the third sliding shaft 38, and the bearing sliding sleeve 44 is fixed on the third mounting plate 43. The sliding guide block 45 is mounted on the third mounting plate 43. The first cylinder 30 is fixed on the third mounting plate 43, and the slider 31 is slidably matched with the sliding guide block 45.

[0042] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A creasing and folding mechanism, comprising a frame (a), characterized in that: The invention also comprises a conveying roller assembly, a creasing device (1), a folding device (2) and a stacking device (3) arranged on a frame (a); the workpiece (4) is conveyed to the creasing device (1), the folding device (2) and the stacking device (3) in sequence by the conveying roller assembly; when the workpiece (4) is conveyed to the creasing device (1), the creasing device (1) acts on the edge of the workpiece (4) to press out a fold (5); when the workpiece (4) is conveyed to the folding device (2), the creasing device (1) acts on the folding device (2) so that the folding device (2) folds the edge of the workpiece (4) through the fold (5) to form a fold (6); when the workpiece (4) is conveyed to the stacking device (3), the stacking device (3) acts on the fold (6) so that the fold (6) is stacked on the workpiece (4).

2. The creasing and folding mechanism according to claim 1, characterized in that: The creasing device (1) comprises a driving component (7), an upper creasing wheel (8) and a lower creasing wheel (9), wherein the driving component (7) drives and connects the upper creasing wheel (8), and the upper creasing wheel (8) is located above the lower creasing wheel (9); when the workpiece (4) is transported to the creasing device (1), the driving component (7) drives the upper creasing wheel (8) to press downward, and the upper creasing wheel (8) presses the edge of the workpiece (4) onto the lower creasing wheel (9), so that a crease (5) is pressed out of the edge of the workpiece (4).

3. The creasing and folding mechanism according to claim 2, characterized in that: The upper pressing wheel (8) is provided with a first pressing edge (10), and the lower pressing wheel (9) is provided with a groove (11) at a position corresponding to the first pressing edge (10); when the driving component (7) drives the upper pressing wheel (8) to press downward, the first pressing edge (10) presses the edge of the workpiece (4) onto the groove (11).

4. The creasing and folding mechanism according to claim 3, characterized in that: The folding device (2) comprises a first roller (12) and a second roller (13), wherein the first roller (12) is arranged obliquely above the second roller (13); when the workpiece (4) is transported to the folding device (2), the first roller (12) and the second roller (13) act on the first roller (12) and the second roller (13) to rotate, and when the first roller (12) and the second roller (13) rotate, they act on the fold (5) of the workpiece (4) to fold the edge of the workpiece (4) to form a fold (6).

5. The creasing and folding mechanism according to claim 4, characterized in that: The first roller (12) is provided with a first extruding edge (14), the second roller (13) is provided with a second extruding edge (15) and a roller (16), the first extruding edge (14) is arranged obliquely, the second extruding edge (15) is arranged horizontally, the lower end of the first extruding edge (14) abuts against the second extruding edge (15), a passing position (29) is formed between the first extruding edge (14) and the second extruding edge (15), and a folding position (29) is formed between the first extruding edge (14) and the roller (16). edge position (17); when the workpiece (4) is conveyed to the folding device (2), the edge of the workpiece (4) passes through the passing position (29) and acts on the first extrusion edge (14) and the second extrusion edge (15), so that the first roller (12) and the second roller (13) rotate, the lower end of the first extrusion edge (14) acts on the folding mark (5) of the workpiece (4), and cooperates with the roller (16) to fold up the edge of the workpiece (4), and form a folded edge (6) at the folding position (17).

6. The creasing and folding mechanism according to claim 5, characterized in that: The folding device (2) also includes a first mounting plate assembly (18), which is mounted on the frame (a). The first mounting plate assembly (18) is provided with a first rotating shaft (19) and a second rotating shaft (20), the first rotating shaft (19) is cooperatively connected to the first roller (12), and the second rotating shaft (20) is cooperatively connected to the second roller (13).

7. The creasing and folding mechanism according to claim 6, characterized in that: The hemming device (3) comprises a second mounting plate assembly (21) and a hemming block (22); the second mounting plate assembly (21) is mounted on a frame (a); the hemming block (22) is mounted on the second mounting plate assembly (21); an hemming groove (23) is formed between the hemming block (22) and the second mounting plate assembly (21); a second edge pressing member (24) is provided at the top of the hemming groove (23); the height of the second edge pressing member (24) gradually decreases along the conveying direction of the workpiece (4); when the workpiece (4) is conveyed to the hemming device (3), the edge of the workpiece (4) passes through the hemming groove (23), and the second edge pressing member (24) acts on the folding edge (6) so that the folding edge (6) is overlapped on the workpiece (4).

8. The creasing and folding mechanism according to claim 7, characterized in that: A conveying groove (25) is also formed between the hemming block (22) and the second mounting plate assembly (21), and the conveying groove (25) is communicated with the hemming groove (23); after the folded edge (6) is folded on the workpiece (4), the edge of the workpiece (4) is conveyed out of the hemming device (3) along the conveying groove (25).

9. The creasing and folding mechanism according to claim 1, characterized in that: It also includes an upper pressure roller device (26) and a lower pressure roller assembly (27) arranged on the frame (a), and the lower pressure roller assembly (27) is connected to the conveying roller assembly; the workpiece (4) passes through the folding device (3) and is then conveyed to the lower pressure roller assembly (27) by the conveying roller assembly. When the workpiece (4) is conveyed on the lower pressure roller assembly (27), the upper pressure roller device (26) presses down on the folding edge (6) so that the folding edge (6) is bonded to the workpiece (4).

10. The creasing and folding mechanism according to claim 8, characterized in that: The indentation device (1) also includes a third mounting plate assembly (28), a driving assembly (7) and a lower pressing wheel (9) are fixed on the third mounting plate assembly (28), a plurality of sliding shafts are arranged on the frame (a), and the first mounting plate assembly (18), the second mounting plate assembly (21) and the third mounting plate assembly (28) are slidably arranged on the corresponding sliding shafts.

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