Folding machine

Abstract

The utility model relates to the technical field of folder production, and discloses a folding machine which comprises a machine frame, a feeding mechanism, a conveying mechanism, a folding mechanism and a stacking mechanism are arranged on the machine frame, the folding mechanism comprises a base plate fixed on the machine frame, a rectangular long groove is formed in the left end of the base plate, a lifting folding knife is arranged above the rectangular long groove, and the lifting folding knife is arranged above the rectangular long groove. And two pairs of extrusion forming rollers which are arranged up and down are arranged below the rectangular long groove. The paperboard folding device can automatically fold paperboards, is high in folding quality and efficiency, and can effectively reduce folding cost.

Description

Technical Field

[0001] This utility model relates to the field of folder production technology, and in particular to a folding machine. Background Technology

[0002] The folder's outer shell consists of cardboard and a sheet of paper covering the cardboard. During the folder's production process, the cardboard needs to be folded. Although existing cardboard has pre-made creases on it before folding, workers still encounter difficulties folding and bending the cardboard due to its stiffness, resulting in a high scrap rate. At the same time, this manual folding method is inefficient. Utility Model Content

[0003] The purpose of this invention is to provide a folding machine that can automatically fold cardboard with high folding quality and efficiency, effectively reducing folding costs.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A folding machine includes a frame, on which a feeding mechanism, a conveying mechanism, a folding mechanism, and a stacking mechanism are provided. The folding mechanism includes a base plate fixed on the frame, a rectangular groove formed at the left end of the base plate, a liftable folding knife above the rectangular groove, and two pairs of extrusion forming rollers arranged vertically below the rectangular groove.

[0006] The above technical solution involves feeding and conveying the cardboard to be bent to the folding knife. The folding knife then moves down onto the pre-made indentation on the cardboard and pushes the cardboard into the rectangular groove. The cardboard is then further squeezed by two pairs of extrusion forming rollers to complete the folding process.

[0007] The present invention is further configured such that: the feeding mechanism includes a lifting feeding platform, and a suction cup that can be lifted and moved left and right is provided above the feeding platform.

[0008] The lifting feeder can feed materials upwards, facilitating the handling of fine materials by the suction cup. The suction cup can be lifted, moved left and right, and transported to the conveying mechanism.

[0009] The present invention is further configured such that a brush is provided above one end of the feeding platform.

[0010] By incorporating brushes, it is possible to effectively prevent the suction cups from picking up multiple pieces of cardboard at once. The brushes also serve to peel and separate the cardboard.

[0011] The present invention is further configured such that: the conveying mechanism includes two conveyor belts arranged on the front and rear sides of the rectangular long trough, a feeding pressure roller is provided above the right end of the conveyor belt, and a row of auxiliary pressure rollers is provided above the middle section of the conveyor belt.

[0012] By setting pressure rollers, the friction between the cardboard and the conveyor belt can be increased during cardboard transport, ensuring smooth cardboard transport.

[0013] The present invention is further configured as follows: the stacking mechanism includes an inclined receiving plate disposed below the extrusion forming roller, the high end of the receiving plate being fixed to a baffle plate, and a pusher plate being disposed above the low end of the receiving plate, the pusher plate being fixed to the piston rod of a third cylinder arranged in a front-rear direction; a pair of symmetrically arranged L-shaped plates are disposed above the middle part of the receiving plate, each L-shaped plate being fixed to the piston rod of a corresponding fourth cylinder; and rollers are disposed at the bottom of the receiving plate, the rollers being placed on an inclined guide rail.

[0014] After the cardboard is folded by the extrusion forming rollers, it automatically falls onto the receiving plate and is located between the L-shaped plate and the pusher plate. Then, the fourth cylinder drives the L-shaped plate to move so that it is separated from the cardboard and the obstruction is removed. Then, the third cylinder drives the pusher plate to move towards the baffle plate. The pusher plate pushes the folded cardboard to one side of the baffle plate. Then, the L-shaped plate moves inward and resets, and the pusher plate resets. In this way, the folded cardboard can be clamped between the baffle plate and the L-shaped plate for temporary storage.

[0015] The present invention is further configured such that: the feeding pressure roller is connected to a base shaft via a rubber connecting sleeve; the auxiliary pressure roller is rotatably connected to a wheel axle, and the wheel axle is inserted into the first waist-shaped groove of the U-shaped tube.

[0016] The above technical solution can be adapted to the conveying of paper of different thicknesses.

[0017] This invention is further configured such that a left positioning block, a front positioning block, and a rear positioning block are fixed on the substrate. The multiple positioning blocks allow for the positioning of the cardboard, thereby improving folding accuracy.

[0018] The outstanding effect of this utility model is:

[0019] Compared with existing technologies, the feeding mechanism and conveying mechanism can transport the cardboard sheet by sheet to the folding mechanism, which can realize automatic feeding;

[0020] The folding mechanism can automatically position and fold the cardboard, which can effectively improve folding quality and efficiency, reduce cardboard scrap rate, and reduce production costs.

[0021] The stacking mechanism can automatically stack the folded cardboard, thus automating the folding process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 for Figure 1 A magnified view of a specific area (A);

[0024] Figure 3 for Figure 1 A magnified view of a portion of B;

[0025] Figure 4 for Figure 1 A sectional view of CC;

[0026] Figure 5 for Figure 3 A sectional view of DD;

[0027] Figure 6 for Figure 3 A view about E;

[0028] Figure 7 for Figure 4 A magnified view of a portion of F;

[0029] Figure 8 This is a schematic diagram of the cardboard before folding.

[0030] Reference numerals: 1. Frame;

[0031] 2. Feeding mechanism; 21. Feeding platform; 22. Suction cup; 23. Rigid air tube; 24. Base plate; 25. Spring; 26. First cylinder; 27. Second cylinder; 28. Brush;

[0032] 3. Conveying mechanism; 31. Conveyor belt; 32. Drive roller; 33. Feed roller; 34. Auxiliary roller; 35. Rubber connecting sleeve; 36. Base shaft; 37. Wheel axle; 38. U-tube; 39. First waist-shaped groove;

[0033] 4. Folding mechanism; 41. Base plate; 42. Folding blade; 43. Extrusion forming roller; 44. Elastic support mechanism; 45. Drive mechanism; 46. Telescopic cylinder; 47. Left positioning block; 48. Front positioning block; 49. Rear positioning block;

[0034] 411. Rectangular long groove;

[0035] 441. Slider; 442. Guide base; 443. Compression spring; 444. Rectangular hole; 445. Limiting rod;

[0036] 451. Large gear; 452. Small gear; 453. Third motor;

[0037] 5. Stacking mechanism; 51. Receiving plate; 52. Baffle plate; 53. Pusher plate; 54. Third cylinder; 55. L-shaped plate; 56. Fourth cylinder; 57. Roller; 58. Guide rail;

[0038] 9. Cardboard; 91. Indentation. Detailed Implementation

[0039] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0040] The following is for reference Figures 1 to 6 The present invention will be described as follows:

[0041] A type of folding machine, such as Figure 1 As shown, it includes a frame 1, on which a feeding mechanism 2, a conveying mechanism 3, a folding mechanism 4, and a stacking mechanism 5 are provided.

[0042] like Figure 3 As shown, the folding mechanism 4 includes a base plate 41 fixed on the frame 1. A rectangular groove 411 is formed on the left end of the base plate 41. A liftable folding blade 42 is provided above the rectangular groove 411. The folding blade 42 is connected to a telescopic cylinder 46 that drives it to move up and down. The telescopic cylinder 46 is fixed on the frame 1. Two pairs of extrusion forming rollers 43 are provided below the rectangular groove 411. The two extrusion forming rollers 43 of each pair are symmetrically arranged about the front and rear of the folding blade. The extrusion forming rollers 43 are provided with an elastic support mechanism 44 and a drive mechanism 45.

[0043] like Figure 5 As shown, the elastic support mechanism 44 includes a slider 441 rotatably connected to the end of the extrusion forming roller 43, the slider 441 being slidably connected to the guide base 442, and a compression spring 443 being provided between the slider 441 and the guide base 442; a rectangular hole 444 is formed on the slider 441, the rectangular hole 444 being inserted into the limiting rod 445, and the limiting rod 445 being fixed to the guide base 442.

[0044] like Figure 6 As shown, the drive mechanism 45 includes a large gear 451 fixedly connected to one end of the extrusion forming roller 43. Two large gears 451 on the same pair of extrusion forming rollers 43 mesh with each other. Two large gears 451 on the two extrusion forming rollers 43 located on the same side of the folding blade 42 mesh with small gears 452. The small gear 452 is fixed to the motor shaft of the third motor 453, and the third motor 453 is fixed to one of the guide bases 442. Figure 4 As shown, the guide base 442 is fixed on the frame. A left positioning block 47, a front positioning block 48, and a rear positioning block 49 are fixed on the base plate 41.

[0045] like Figure 2 As shown, the feeding mechanism 2 includes a liftable feeding platform 21. Above the feeding platform 21 is a suction cup 22 that can be lifted and moved left and right. The suction cup 22 is fixed to one end of a rigid air pipe 23. The rigid air pipe 23 extends through the substrate 24 and is connected to a vacuum tube. A spring 25 is sleeved on the rigid air pipe 23 and is clamped between the substrate 24 and the suction cup. The substrate 24 is fixed to the piston rod end of a vertically arranged first cylinder 26. The first cylinder is fixed to the piston rod of a horizontally arranged second cylinder 27. The second cylinder 27 is fixedly connected to the frame 1. The feeding platform 21 is driven to rise and fall by a screw drive mechanism or other mechanism.

[0046] A brush 28 is provided above one end of the feeding platform 21, and the brush 28 is fixed on the frame 1.

[0047] like Figure 2 , Figure 4 As shown, the conveying mechanism 3 includes two conveyor belts 31 arranged on the front and rear sides of a rectangular trough 411. The two ends of the two conveyor belts 31 are tensioned on the same pair of drive rollers 32. The drive rollers 32 are rotatably connected to the frame 1 and connected to a motor that drives their rotation. A feed roller 33 is located above the right end of each conveyor belt 31, and a row of auxiliary rollers 34 is located above the middle section of each conveyor belt 31. The feed roller 33 is connected to a base shaft 36 via a rubber connecting sleeve 35, and the base shaft 36 is rotatably connected to the frame 1. The auxiliary rollers 34 are rotatably connected to an axle 37, which is inserted into the first waist-shaped groove 39 of a U-shaped tube 38. The U-shaped tube 38 is fixedly connected to the frame 1.

[0048] like Figure 1 , Figure 4 As shown, the stacking mechanism 5 includes an inclined receiving plate 51 disposed below the extrusion forming roller 43. The high end of the receiving plate 51 is fixed to the baffle plate 52, and a pusher plate 53 is disposed above the low end of the receiving plate 51. The pusher plate 53 is fixed to the piston rod of the third cylinder 54 disposed in the front-back direction. A pair of symmetrically arranged L-shaped plates 55 are disposed above the middle part of the receiving plate 51. Each L-shaped plate 55 is fixed to the piston rod of the corresponding fourth cylinder 56. The third cylinder 54 and the fourth cylinder 56 are fixed to the frame 1. A roller 57 is disposed at the bottom of the receiving plate 51. The roller 57 is placed on an inclined guide rail 58, and the guide rail is fixed to the frame.

[0049] Working principle: First, place the cardboard 9 with the embossed 91 on the feeding table 21. Every time a few cardboard sheets are removed from the feeding table, the feeding table moves up a certain distance under the screw drive mechanism.

[0050] Second, the first cylinder 26 drives the base plate 24 to move down. The base plate 24 drives the suction cup 22 to move down through the rigid air pipe 23 and the spring 25. The suction cup holds one end of the cardboard 9 at the top of the feeding table. Then the first cylinder drives the suction cup to move up. The suction cup drives the cardboard 9 at the top to move up. Through the action of the brush 28, if multiple sheets of paper are sucked up together, the brush can peel off the lower sheets of paper, leaving the excess paper on the feeding table. Then the second cylinder 27 drives the first cylinder to move to the left. The suction cup moves to the left and moves the cardboard between the conveyor belt and the feeding pressure roller.

[0051] Third, the conveyor belt 31 is driven by the drive roller to convey the paperboard 9 to the left. The feed roller 33 and the auxiliary roller 34 can increase the friction between the paperboard and the conveyor belt to ensure the smooth conveying of the paperboard.

[0052] Fourth, when the cardboard is conveyed to the left side of the conveyor belt, the left and right positions of the cardboard can be positioned by the left positioning block, and the front and rear positions of the cardboard can be positioned by the front and rear positioning blocks, so as to make it convenient to position the indentation directly above the rectangular groove 411 and directly below the folding knife.

[0053] Fifth, the folding knife moves rapidly downward under the action of the telescopic cylinder. After the folding knife moves to the indentation, it quickly pushes the cardboard into the rectangular slot. The cardboard automatically folds over for a preliminary fold. Then, the folding knife continues to move downward, pushing the pre-folded cardboard between the two upper extrusion forming rollers. Under the action of the third motor, the upper and lower pairs of extrusion forming rollers can rotate synchronously at the same speed. The two extrusion forming rollers continue to further compress and form the cardboard. The extrusion forming rollers can move slightly through the action of the spring, thus adapting to the folding requirements of different cardboards. The extreme positions of the extrusion forming rollers can be constrained through the action of the second waist-shaped hole and the limiting rod.

[0054] Sixth, after the cardboard is finally formed by the extrusion forming rollers, it is moved down to the receiving plate. At this time, the folded cardboard is located between the L-shaped plate and the pusher plate. Then, the fourth cylinder drives the L-shaped plate to move so that it is separated from the cardboard and the obstruction of the cardboard is removed. Then, the third cylinder drives the pusher plate to move towards the baffle plate. The pusher plate pushes the folded cardboard to one side of the baffle plate. Then, the L-shaped plate moves inward and resets, and the pusher plate resets. In this way, the folded cardboard can be clamped between the baffle plate and the L-shaped plate for temporary storage.

[0055] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A folding machine comprising a frame (1) provided with a feeding mechanism (2), a conveying mechanism (3), a folding mechanism (4) and a stacking mechanism (5), characterized in that: The folding mechanism (4) comprises a base plate (41) fixed on the frame (1), the left end of the base plate (41) is formed with a rectangular long slot (411), the upper side of the rectangular long slot (411) is provided with a liftable folding knife (42), and the lower side of the rectangular long slot (411) is provided with two pairs of extrusion forming rollers (43) arranged in an up-down mode.

2. A folding machine according to claim 1, characterized in that: The feeding mechanism (2) comprises a liftable feeding table (21), and the upper side of the feeding table (21) is provided with a liftable and left-right movable suction disc (22).

3. A folding machine according to claim 2, characterised in that: The upper side of one end of the feeding table (21) is provided with a brush (28).

4. A folding machine according to claim 1, characterized in that: The conveying mechanism (3) comprises two conveying belts (31) arranged on the front and rear sides of the rectangular long slot (411), the upper side of the right end of the conveying belt (31) is provided with a feeding pressure roller (33), and the upper side of the middle section of the conveying belt (31) is provided with an auxiliary pressure roller (34).

5. A folder according to claim 1, characterized in that: The stacking mechanism (5) comprises an obliquely arranged receiving plate (51) arranged below the extrusion forming roller (43), the high end of the receiving plate (51) is fixed on a material blocking plate (52), the low end of the receiving plate (51) is provided with a material pushing plate (53), the material pushing plate (53) is fixed on the piston rod of a third cylinder (54) arranged in a front-rear direction, the middle part of the receiving plate (51) is provided with a pair of left-right symmetrically arranged L-shaped plates (55), each L-shaped plate (55) is fixed on the piston rod of a corresponding fourth cylinder (56), and the bottom of the receiving plate (51) is provided with a roller (57) arranged on an obliquely arranged guide rail (58).

6. A folder according to claim 4, characterized in that: The feeding pressure roller (33) is connected with a base shaft (36) through a rubber connecting sleeve (35).

7. A folder according to claim 4, characterized in that: The auxiliary pressure roller (34) is rotationally connected on an axle (37), and the axle (37) is inserted into a first waist-shaped groove (39) of a U-shaped pipe (38).

8. A folder according to claim 1, characterized in that: The base plate (41) is fixed with a left positioning block (47), a front positioning block (48) and a rear positioning block (49).

Images