Corrugated roller set transmission gap adjusting structure of corrugated tip-to-corrugated tip paperboard machine

Abstract

The utility model discloses a corrugated roller group transmission gap adjusting structure of a corrugated tip-to-corrugated tip paperboard machine, which comprises a corrugated tip-to-corrugated tip paperboard machine, the corrugated tip-to-corrugated tip paperboard machine is provided with a first upper corrugated roller and a second upper corrugated roller which are opposite in corrugated tip, and the first upper corrugated roller and the second upper corrugated roller are respectively provided with a driving gear and a driven gear which are meshed with each other; the backlash adjusting gear is coaxially stacked on the driven gear and is in relative running fit with the driven gear, and the backlash adjusting gear and the driven gear abut against the driving gear to eliminate a transmission backlash after relatively rotating and staggering, so that the driving gear and the driven gear synchronously rotate; and the locking device is used for fixing the gap adjusting gear and the driven gear. According to the utility model, the gap adjusting gear is arranged at the driven gear, and the gap adjusting gear and the driven gear deflect by a certain angle, so that the gap of gear transmission is eliminated, and the edge tips of the first upper corrugated roller and the second upper corrugated roller are stable.

Description

Technical Field

[0001] This utility model relates to a corrugated cardboard machine with corrugated tips, and more particularly to a corrugated roller group transmission gap adjustment structure for a corrugated cardboard machine with corrugated tips. Background Technology

[0002] Currently, a new type of corrugated cardboard with flute-to-flute construction is emerging in the market. Taking four-layer corrugated cardboard as an example, it consists of a face paper, a liner paper, and two layers of corrugated paper located between the face paper and the liner paper with their flute tips touching. Because the flute tips of the two middle layers of cardboard are opposite each other, they provide good support. Therefore, it can replace the traditional five-layer cardboard.

[0003] However, the most important problem to overcome in the production process of two layers of corrugated paper with the flute tips touching is how to ensure that the flute tips of the two corrugated paperboards are in close contact.

[0004] Chinese Patent No. CN202323046881.4, published on September 17, 2024, discloses a multi-functional corrugating machine for producing tip-to-tip corrugated cardboard. The machine includes a corrugating roller for processing a first core paper and a second core paper into a corrugated shape, a gluing mechanism for applying glue to the first and second core papers, and a pressing mechanism for bonding the two layers of tip-to-tip core paper to the face paper. The first and second core papers are processed by the gluing mechanism and the corrugating roller to form two layers of tip-to-tip core paper. The pressing mechanism is equipped with a power unit that drives the pressing mechanism to rotate synchronously with the corrugating roller, causing the two layers of core paper located between the pressing mechanism and the corrugating roller to move synchronously and be pressed together with the face paper. The structure includes a first corrugated roll for processing the first and second core sheets into a corrugated shape, and a second corrugated roll for processing the second core sheet into a corrugated shape. The corrugated first and second core sheets (after sizing the crests of one of them) are then output via a first upper corrugated roll and a second upper corrugated roll, respectively, which are driven by the first and second corrugated rolls. Because the flute tips of the first and second upper corrugated rolls move relative to each other and synchronously, double-layer corrugated paper with opposite flute tips can be produced. However, due to the backlash between the drive gears of the first and second upper corrugated rolls, misalignment can easily occur, resulting in misaligned flute tips in the double-layer corrugated paper and affecting the quality of the paperboard. Utility Model Content

[0005] The purpose of this utility model is to provide a simple and reasonable structure that ensures the synchronization of a set of corrugated rollers with opposite flute tips, so that the corrugated roller group of the corrugated paperboard machine with the flute tips facing each other is a transmission gap adjustment structure.

[0006] The purpose of this utility model is achieved as follows:

[0007] A corrugated roller group transmission and clearance adjustment structure for a corrugated tip-to-corrugated cardboard machine includes a corrugated tip-to-corrugated cardboard machine, which is provided with a first upper corrugated roller and a second upper corrugated roller with opposite corrugated tips. The first upper corrugated roller and the second upper corrugated roller are respectively provided with a driving gear and a driven gear that mesh with each other.

[0008] It also includes an adjusting gear, which is coaxially stacked on the driven gear and rotates relative to it. After the adjusting gear and the driven gear rotate and misalign relative to each other, the adjusting gear comes into contact with the driving gear to eliminate the transmission gap and realize the synchronous rotation of the driving gear and the driven gear.

[0009] The locking device secures the adjusting gear to the driven gear.

[0010] The objective of this utility model can also be achieved by the following technical measures:

[0011] As a more specific embodiment, the locking device is a locking screw. The side of the adjusting gear and the side of the driven gear are respectively provided with an adjusting elongated hole and a screw hole corresponding to the locking screw. After the locking screw passes through the adjusting elongated hole, it connects with the screw hole to press and fix the adjusting gear on the driven gear.

[0012] As a further embodiment, the locking screws are provided in multiples and are evenly distributed in a ring around the center of the adjusting gear.

[0013] As a further embodiment, the first upper corrugated roller is fixedly connected to the driving gear via a first transmission shaft, and the first transmission shaft is also connected to the drive mechanism; the second upper corrugated roller is fixedly connected to the driven gear via a second transmission shaft, the adjusting gear is rotatably engaged with the second transmission shaft, and a deflection adjustment mechanism is provided between the adjusting gear and the second transmission shaft, the deflection adjustment mechanism being used to adjust the relative rotation angle between the adjusting gear and the driven gear.

[0014] As a further embodiment, the deflection adjustment mechanism includes an adjusting screw, a locking nut, a crossbar, and a stop. The crossbar is radially fixed to the end of the second transmission shaft, and both ends of the crossbar are cantilever ends. The cantilever ends extend to the side of the adjusting gear. The stop is provided on the side of the adjusting gear corresponding to the same side of the two cantilever ends of the crossbar. The adjusting screw is threaded to the cantilever end and passes through the cantilever end to abut against the stop. The locking nut is threaded to the adjusting screw and abuts against the side of the cantilever end facing away from the stop.

[0015] As a further embodiment, the tip-to-tip cardboard machine includes a first corrugated roller group, a second corrugated roller group, and a first gluing assembly;

[0016] The first corrugated roll group includes a first lower corrugated roll and a first upper corrugated roll, and a first wave-forming channel is formed between the first lower corrugated roll and the first upper corrugated roll to heat-press the first core paper into a wave shape.

[0017] The second corrugated roll assembly includes a second lower corrugated roll and a second upper corrugated roll, and a second wave-forming channel is formed between the second lower corrugated roll and the second upper corrugated roll to heat-press the second core paper into a wave shape.

[0018] The first gluing assembly is located beside the second upper corrugated roll or the first upper corrugated roll and is used to apply glue to the tips of the corrugations of the corrugated second core paper or the first core paper.

[0019] As a further embodiment, a bonding and pressing mechanism is provided next to the first upper corrugated roller. The bonding and pressing mechanism includes a traction belt, a power roller, and a heating roller. The traction belt is wrapped around the power roller and the heating roller and at least a section is close to the first upper corrugated roller. A bonding and pressing channel is formed between the traction belt and the first upper corrugated roller. A second adhesive assembly is also provided next to the first upper corrugated roller. The second adhesive assembly is located between the second upper corrugated roller and the bonding and pressing mechanism.

[0020] As a further embodiment, the adhesive pressing mechanism also includes a corner pressure roller, and the traction belt is also wrapped around the corner pressure roller. The heating roller and the corner pressure roller are distributed around the outer periphery of the first upper corrugated roller. The adhesive pressing channel is formed between the traction belt between the outer sides of the heating roller and the corner pressure roller and the outer periphery of the first upper corrugated roller.

[0021] As a further embodiment, the angle α at which the traction belt wraps around the first upper corrugated roller is 90 degrees to 120 degrees.

[0022] The beneficial effects of this utility model are as follows:

[0023] This invention installs an adjusting gear at the driven gear, which deflects the driven gear at a certain angle to eliminate the gap in the gear transmission, thereby stabilizing the tip-to-tip alignment of the first and second upper corrugated rollers. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an embodiment of the corrugated roller assembly in this utility model.

[0025] Figure 2 This is a schematic diagram of the meshing structure of the driving gear, driven gear, and adjusting gear in this utility model.

[0026] Figure 3 This is a schematic diagram of the cooperation structure between the clearance adjusting gear and the deflection adjustment mechanism in this utility model.

[0027] Figure 4 This is a schematic diagram of the corrugated cardboard machine with corrugated tips in this utility model. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] See Figures 1 to 4 As shown, a corrugated roller group transmission and gap adjustment structure for a corrugated paperboard machine with tip-to-tip is provided. The machine includes a first upper corrugated roller 1 and a second upper corrugated roller 2 with opposite tips. The first upper corrugated roller 1 and the second upper corrugated roller 2 are respectively provided with a driving gear 41 and a driven gear 51 that mesh with each other.

[0030] It also includes an adjusting gear 52, which is coaxially stacked on the driven gear 51 and rotates relative to it. After the adjusting gear 52 and the driven gear 51 rotate and are misaligned relative to each other, they collide with the driving gear 41 to eliminate the transmission gap and realize the synchronous rotation of the driving gear 41 and the driven gear 51; and a locking device to fix the adjusting gear 52 and the driven gear 51.

[0031] The locking device is a locking screw 53. The side of the adjusting gear 52 and the side of the driven gear 51 are respectively provided with an adjusting elongated hole 522 and a screw hole corresponding to the locking screw 53. The locking screw 53 passes through the adjusting elongated hole 522 and connects with the screw hole to press and fix the adjusting gear 52 onto the driven gear 51.

[0032] The locking screws 53 are provided in multiples and are evenly distributed in a ring around the center of the adjusting gear 52.

[0033] The first upper corrugated roller 1 is fixedly connected to the driving gear 41 via the first transmission shaft 11, and the first transmission shaft 11 is also connected to the drive mechanism. The second upper corrugated roller 2 is fixedly connected to the driven gear 51 via the second transmission shaft 21. The adjusting gear 52 is rotatably engaged with the second transmission shaft 21. A deflection adjustment mechanism is also provided between the adjusting gear 52 and the second transmission shaft 21. The deflection adjustment mechanism is used to adjust the relative rotation angle between the adjusting gear 52 and the driven gear 51.

[0034] The driving mechanism includes a driving gear 4, a prime mover gear, a driving motor, and a synchronous belt. The driving gear 4 is mounted on the first transmission shaft 11. The driving motor is connected to the prime mover gear, and the prime mover gear is connected to the driving gear 4 via a synchronous belt (not shown in the figure).

[0035] The deflection adjustment mechanism includes an adjusting screw 23, a locking nut 24, a crossbar 22, and a stop block 54. The crossbar 22 is radially fixed at the end of the second transmission shaft 21. Both ends of the crossbar 22 are cantilever ends 221, which extend to the side of the adjusting gear 52. The stop block 54 is provided on the side of the adjusting gear 52 corresponding to the same side of the two cantilever ends 221 of the crossbar 22. The adjusting screw 23 is threaded to the cantilever end 221 and passes through the cantilever end 221 to abut against the stop block 54. The locking nut 24 is threaded to the adjusting screw 23 and abuts against the side of the cantilever end 221 facing away from the stop block 54.

[0036] The tip-to-tip corrugated board machine includes a first corrugated roll group, a second corrugated roll group, and a first gluing assembly 6. The first corrugated roll group includes a first lower corrugated roll 12 and a first upper corrugated roll 1, with a first corrugated forming channel formed between the first lower corrugated roll 12 and the first upper corrugated roll 1 to heat-press the first core paper 910 into a corrugated shape; the second corrugated roll group includes a second lower corrugated roll 25 and a second upper corrugated roll 2, with a second corrugated forming channel formed between the second lower corrugated roll 25 and the second upper corrugated roll 2 to heat-press the second core paper 920 into a corrugated shape; the first gluing assembly 6 is disposed beside the second upper corrugated roll 2 or the first upper corrugated roll 1 and is used to apply glue to the tips of the corrugated second core paper 920 or the first core paper 910.

[0037] A bonding and pressing mechanism 8 is also provided on the side of the first upper corrugated roller 1. The bonding and pressing mechanism 8 includes a traction belt 81, a power roller 82 and a heating roller 83. The traction belt 81 is wrapped around the power roller 82 and the heating roller 83, and at least a section of it is close to the first upper corrugated roller 1. A bonding and pressing channel is formed between the traction belt 81 and the first upper corrugated roller 1. A second adhesive assembly 7 is also provided on the side of the first upper corrugated roller 1. The second adhesive assembly 7 is located between the second upper corrugated roller 2 and the bonding and pressing mechanism 8.

[0038] The adhesive pressing mechanism 8 also includes a corner pressure roller 84, and the traction belt 81 is also wrapped around the corner pressure roller 84. The heating roller 83 and the corner pressure roller 84 are distributed around the outer periphery of the first upper corrugated roller 1. The traction belt 81 between the outer sides of the heating roller 83 and the corner pressure roller 84 forms the adhesive pressing channel with the outer periphery of the first upper corrugated roller 1.

[0039] The angle α at which the traction belt 81 wraps around the first upper corrugated roller 1 is 90 degrees to 120 degrees. By increasing the wrap angle, the heating path can be extended to ensure the cardboard is properly bonded.

[0040] Its working principle is: See Figure 4As shown, the first upper corrugated roller 1 rotates in the direction of arrow R1, the second upper corrugated roller 2 rotates in the direction of arrow R2, and the power roller 82 of the adhesive pressing mechanism 8 rotates in the direction of arrow R3. The direction of arrow R1 is opposite to the direction of arrow R2, and the direction of arrow R3 is opposite to the direction of arrow R1. The first core paper 910 enters between the first lower corrugated roll 12 and the first upper corrugated roll 1 in the direction of arrow A to form the first single-layer corrugated paper 91. The second core paper 920 enters between the second lower corrugated roll 25 and the second upper corrugated roll 2 in the direction of arrow B to form the second single-layer corrugated paper 92. The first single-layer corrugated paper 91 directly enters between the first upper corrugated roll 1 and the second upper corrugated roll 2 around the first upper corrugated roll 1. While the outer corner of the second single-layer corrugated paper 92 is being sized by the first gluing assembly 6, it enters between the first upper corrugated roll 1 and the second upper corrugated roll 2 around the second upper corrugated roll 2. Under the heating of the first upper corrugated roll 1 and the second upper corrugated roll 2 and the joint extrusion of the corners, the corners of the first single-layer corrugated paper 91 and the second single-layer corrugated paper 92 are brought together to form a corrugated paper with corners facing each other.

[0041] The corrugated paper, with its tip to tip facing each other, continues to enter the bonding channel around the first upper corrugating roller 1. At the same time, before entering the bonding channel, the corrugated paper with its tip to tip faces the other side of the second single-layer corrugated paper 92 is sized by the second gluing assembly 7. The face paper 93 enters the bonding channel along the direction of arrow C and is bonded to the corrugated paper with its tip to tip facing each other, forming a three-layer corrugated board 9 with its tip to tip facing each other. The three-layer corrugated board 9 with its tip to tip facing each other is output along the direction of arrow D.

[0042] When there is a transmission gap between the driving gear 41 and the driven gear 51 (a gap exists between the transmission surfaces of the teeth 511 of the driven gear 51 and the teeth 411 of the driving gear 41), the operation of the driven gear 51 lags behind that of the driving gear 41, causing the first upper corrugated roller 1 and the second upper corrugated roller 2 to be out of sync, resulting in misalignment of their corrugated tips. Figure 3 As shown, to eliminate the transmission lag problem, first loosen the locking screw 53 and locking nut 24, then adjust the adjusting screws 23 at both ends of the crossbar 22 so that the teeth 521 of the adjusting gear 52 abut against the transmission surfaces of the teeth 411 of the driving gear 41, thereby eliminating the transmission backlash. Then tighten the locking screw 53 and locking nut 24 again to fix the adjusting gear 52 and the driven gear 51 relative to each other, thus completing the adjustment.

[0043] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A corrugated roller group transmission clearance adjustment structure for a corrugated tip-to-corrugated cardboard machine, comprising a corrugated tip-to-corrugated cardboard machine, wherein a first upper corrugated roller (1) and a second upper corrugated roller (2) with opposite corrugated tips are provided, and a driving gear (41) and a driven gear (51) meshing with each other are respectively provided on the first upper corrugated roller (1) and the second upper corrugated roller (2). Its features are: It also includes an adjusting gear (52), which is coaxially stacked on the passive gear (51) and rotates relative to it. After the adjusting gear (52) and the passive gear (51) rotate relative to each other and are misaligned, they collide with the driving gear (41) to eliminate the transmission gap, thereby realizing the synchronous rotation of the driving gear (41) and the passive gear (51). The locking device fixes the adjusting gear (52) and the driven gear (51).

2. The corrugated roller group transmission gap adjustment structure of the tip-to-tip cardboard machine according to claim 1, characterized in that: The locking device is a locking screw (53). The side of the adjusting gear (52) and the side of the driven gear (51) are respectively provided with an adjusting elongated hole (522) and a screw hole corresponding to the locking screw (53). The locking screw (53) passes through the adjusting elongated hole (522) and connects with the screw hole to press and fix the adjusting gear (52) on the driven gear (51).

3. The corrugated roller group transmission gap adjustment structure of the tip-to-tip cardboard machine according to claim 2, characterized in that: The locking screws (53) are provided in multiples and are evenly distributed in a ring around the center of the adjusting gear (52).

4. The corrugated roller group transmission gap adjustment structure of the tip-to-tip cardboard machine according to claim 1, characterized in that: The first upper corrugated roller (1) is fixedly connected to the driving gear (41) via the first transmission shaft (11), and the first transmission shaft (11) is also connected to the drive mechanism. The second upper corrugated roller (2) is fixedly connected to the driven gear (51) via the second transmission shaft (21), and the adjusting gear (52) is rotatably engaged with the second transmission shaft (21). A deflection adjustment mechanism is also provided between the adjusting gear (52) and the second transmission shaft (21). The deflection adjustment mechanism is used to adjust the relative rotation angle between the adjusting gear (52) and the driven gear (51).

5. The corrugated roller group transmission gap adjustment structure of the tip-to-tip cardboard machine according to claim 4, characterized in that: The deflection adjustment mechanism includes an adjusting screw (23), a locking nut (24), a crossbar (22), and a stop (54). The crossbar (22) is radially fixed at the end of the second transmission shaft (21). The two ends of the crossbar (22) are cantilever ends (221). The cantilever ends (221) extend to the side of the adjusting gear (52). The side of the adjusting gear (52) is provided with the stop (54) on the same side of the two cantilever ends (221) of the crossbar (22). The adjusting screw (23) is threaded to the cantilever end (221) and passes through the cantilever end (221) to abut against the stop (54). The locking nut (24) is threaded to the adjusting screw (23) and abuts against the side of the cantilever end (221) facing away from the stop (54).

6. The corrugated roller group transmission gap adjustment structure of the tip-to-tip cardboard machine according to claim 1, characterized in that: The tip-to-tip cardboard machine includes a first corrugated roller group, a second corrugated roller group, and a first gluing assembly (6). The first corrugated roll group includes a first lower corrugated roll (12) and a first upper corrugated roll (1), and a first wave-forming channel is formed between the first lower corrugated roll (12) and the first upper corrugated roll (1) to heat press the first core paper (910) into a wave shape; The second corrugated roll assembly includes a second lower corrugated roll (25) and a second upper corrugated roll (2), and a second corrugated forming channel is formed between the second lower corrugated roll (25) and the second upper corrugated roll (2) to heat press the second core paper (920) into a corrugated shape; The first gluing assembly (6) is disposed beside the second upper corrugated roll (2) or the first upper corrugated roll (1) and is used to apply glue to the corrugated tips of the corrugated second core paper (920) or the first core paper (910).

7. The corrugated roller group transmission gap adjustment structure of the tip-to-tip cardboard machine according to claim 6, characterized in that: A bonding and pressing mechanism (8) is also provided on the side of the first upper corrugated roller (1). The bonding and pressing mechanism (8) includes a traction belt (81), a power roller (82) and a heating roller (83). The traction belt (81) is wrapped around the power roller (82) and the heating roller (83) and at least one section is close to the first upper corrugated roller (1). A bonding and pressing channel is formed between the traction belt (81) and the first upper corrugated roller (1). A second adhesive assembly (7) is also provided on the side of the first upper corrugated roller (1). The second adhesive assembly (7) is located between the second upper corrugated roller (2) and the bonding and pressing mechanism (8).

8. The corrugated roller group transmission clearance adjustment structure of the tip-to-tip cardboard machine according to claim 7, characterized in that: The adhesive pressing mechanism (8) further includes a corner pressure roller (84), and the traction belt (81) is also wrapped around the corner pressure roller (84). The heating roller (83) and the corner pressure roller (84) are distributed around the outer periphery of the first upper corrugated roller (1). The traction belt (81) between the outer sides of the heating roller (83) and the corner pressure roller (84) forms the adhesive pressing channel with the outer periphery of the first upper corrugated roller (1).

9. The corrugated roller group transmission gap adjustment structure of the tip-to-tip cardboard machine according to claim 7, characterized in that: The angle α at which the traction belt (81) wraps around the first upper corrugated roller (1) is 90 degrees to 120 degrees.

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