A folding device for paper towel processing

Abstract

A folding device for paper towel processing belongs to the technical field of paper towel folding. In order to solve the problem that the vacuum degree on the folding mechanism is reduced, the paper towel cannot be adsorbed on the surface of the folding roller, and the angle of the contact part between the folding device and the paper towel becomes blunt, which is not conducive to the subsequent folding of the paper towel into a Z shape, the invention includes two mounting plates installed on the paper towel processing equipment, and the first folding roller and the second folding roller are rotatably mounted on the two mounting plates. A replacement component is arranged inside the second folding roller, and the output end of the replacement component is fixedly mounted. A plurality of adsorption components are embedded and rotatably mounted on the outer wall of the second folding roller. Even if the vacuum degree is insufficient, the present invention can still make the paper towel fit on the second folding roller through the cooperation between the residual vacuum suction and the friction force on the lifting plate and the two flip plates, and when the folding device is worn, the folding device can be replaced without stopping the machine.

Description

Technical Field

[0001] The invention relates to the technical field of paper towel folding, in particular to a folding device for paper towel processing. Background Art

[0002] As a daily consumable, paper towels are consumed in huge quantities. In the past, rolls of paper towels were large in size and not convenient to carry outside. After adjustments in technology, smaller bagged tissues have been introduced. Bagged tissues are not only easy to pull out, but also easy to carry outside. The production process of bagged tissues includes the step of folding paper towels. In the production process of bagged tissues, this step is particularly important. If there is a deviation in the folding step, the whole pack of paper towels will be wrinkled, which will not only look bad, but also deteriorate the use effect.

[0003] Chinese patent CN218114538U announces the folding structure of a paper towel stacking machine, including a cutting structure, a paper feeding structure, a folding structure, a first spacer block, a second spacer block and a frame, wherein the cutting structure, the paper feeding structure, the folding structure, the first spacer block and the second spacer block are all arranged on the frame, a conveying path is provided between the first spacer block and the second spacer block, the cutting structure is configured to cut paper towels, the paper feeding structure is arranged on one side of the conveying path, and the folding structure is arranged on the other side of the conveying path, the paper feeding structure is configured to convey the paper towels cut on the cutting structure to the conveying path, and the folding structure is configured to fold the paper towels delivered through the conveying path.

[0004] The folding structure of the paper towel stacking machine disclosed in the above-mentioned prior art can effectively ensure that the cut paper towels are reliably moved to the folding structure to ensure the folding effect and folding efficiency; however, the folding mechanism generally adsorbs the paper towels on the surface of the folding roller through vacuum, and then the folding device on the folding roller and the V-groove on another adjacent folding rod cooperate to achieve the continuous folding effect of the paper towel. If the vacuum degree on the folding mechanism is reduced during the folding process of the paper towel, the paper towel cannot be adsorbed on the surface of the folding roller, which will cause deviations in the folding marks of the paper towel and even wrinkles in the paper towel, which not only affects the product quality but also wastes raw materials. In addition, after a long period of use, the angle of the contact part between the folding device and the paper towel will become blunt, so that the angle of the folded part of the paper towel will become larger, thereby reducing the folding effect of the paper towel, which is not conducive to the subsequent folding of the paper towel into a Z shape, resulting in a decrease in the overall folding effect of the paper towel.

[0005] In view of the above problems, a folding device for paper towel processing is proposed. Summary of the invention

[0006] The object of the present invention is to provide a folding device for paper towel processing. By adopting this device to work, the problem that the vacuum degree on the folding mechanism is reduced in the above background, the paper towel cannot be adsorbed on the surface of the folding roller, resulting in deviations in the folding marks of the paper towel and wrinkles on the paper towel, affecting product quality and causing waste of raw materials is solved. In addition, the problem that after a long period of use, the angle of the contact part between the folding device and the paper towel becomes blunt, which makes the angle of the folded part of the paper towel larger, which is not conducive to the subsequent folding of the paper towel into a Z shape, and then leads to a decrease in the overall folding effect of the paper towel.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a folding device for paper towel processing, comprising two mounting plates installed on the paper towel processing equipment, a pair of first guide rollers, a pair of second guide rollers and a pair of third guide rollers are rotatably mounted on the two mounting plates, a visual probe is also fixedly mounted on the mounting plates, a first bottom knife roller, a second bottom knife roller, a first folding roller and a second folding roller are also rotatably mounted on the two mounting plates, a paper towel is placed on the outer surface of the first guide roller, and the paper towel is folded into a Z shape by passing through the first guide roller, the second guide roller and the third guide roller, the first bottom knife roller, the second bottom knife roller, the first folding roller and the second folding roller in sequence, and the first blocking component, the second bottom knife roller and the second folding roller are respectively arranged inside the second folding roller. A plugging component and a replacement component, wherein the first plugging component and the second plugging component are symmetrically arranged, a folding device is fixedly installed at the output end of the replacement component, the folding device is embedded and slidably installed on the second folding roller, and the triangular part of the folding device protrudes from the outer wall of the second folding roller, a plurality of adsorption components are embedded and rotatably installed on the outer wall of the second folding roller, a plurality of electromagnets A are also embedded and fixedly installed on the outer wall of the second folding roller, a plurality of hydraulic components are also fixedly installed inside the second folding roller, the hydraulic components are fixedly connected to the extension section of the replacement component, the hydraulic components are connected to the first plugging component and the second plugging component respectively, and the hydraulic components, the first plugging component and the second plugging component are all filled with hydraulic oil;

[0008] The first bottom knife roller comprises a knife roller body rotatably mounted on a mounting plate, a first vacuum chamber is provided inside the knife roller body, a plurality of first suction holes are provided on the outer peripheral wall of the knife roller body, the first suction holes are connected to the first vacuum chamber, and the composition structure and connection method of the first bottom knife roller and the second bottom knife roller are consistent;

[0009] The second folding roller comprises a folding roller body rotatably mounted on a mounting plate, a second vacuum chamber is provided inside the folding roller body, a plurality of V-shaped grooves are provided on the outer peripheral wall of the folding roller body, the plurality of V-shaped grooves are arranged in a circular array, a plurality of second suction holes are provided on the bottom surface of the inner cavity of the V-shaped groove, the second suction holes are connected to the second vacuum chamber through an airway, an adsorption component is embedded and rotatably mounted in the inner cavity of the V-shaped groove, a slide groove is provided inside the folding roller body, a replacement component and a hydraulic component are fixedly mounted on the side walls of the slide groove close to the second vacuum chamber, and a folding device is slidably arranged in the inner cavity of the slide groove, a collecting groove and a storage groove are provided on the inner walls on both sides of the slide groove, a first blocking component and a second blocking component are fixedly mounted on the inner walls on both sides of the slide groove, the first blocking component can block the collecting groove, and the second blocking component can block the storage groove, and the composition structure and connection method of the second folding roller are consistent with those of the first folding roller;

[0010] The adsorption assembly includes two pairs of elastic hinges rotatably mounted on the inner walls of both sides of the V-shaped groove, and a flip plate is fixedly mounted on each of the two elastic hinges. The two flip plates are arranged in symmetrical positions, and a lifting plate is arranged in the gap between the two flip plates. The lifting plate is rotatably connected to the two flip plates through a limit hinge, and a plurality of third suction holes are opened on the lifting plate, and the third suction holes are arranged in alignment with the second suction holes;

[0011] The lifting plate includes a plate body, and a plurality of permanent magnets are fixedly mounted on the bottom surface of the plate body, and the permanent magnets are aligned with the electromagnet A;

[0012] The first blocking component includes a shell fixedly mounted on the inner wall of one side of the slide groove and a blocking plate embedded and slidably mounted in the inner cavity of the shell. The interior of the shell contains hydraulic oil. The shell and the blocking plate are elastically connected by a first spring. The blocking plate is used to block the collection groove. The composition structure and connection method of the first blocking component and the second blocking component are consistent;

[0013] The replacement component includes an electric telescopic column fixedly mounted on the side wall of the slide slot, and a clamping component is fixedly mounted on the output end of the electric telescopic column, and a clamping relationship can be formed between the clamping component and the folding device;

[0014] The clamping assembly includes a long plate, a plurality of deep grooves are provided on the side wall of the long plate close to the folding device, an electromagnet B is built in the inner cavity of the deep groove, long grooves are respectively provided on the inner walls on both sides of the deep groove, a clamping block is slidably embedded in the inner cavity of the long groove, and the clamping block is elastically connected to the side wall of the inner cavity of the long groove through a second spring;

[0015] The folding device comprises a folding block, on the side wall of which the folding block is close to the clamping assembly, a plurality of magnetic clamps are fixedly mounted, and the magnetic clamps are aligned with the electromagnet B in the deep groove;

[0016] The hydraulic assembly includes a hydraulic cylinder fixedly mounted on the side wall of the slide groove and a piston slidably mounted in the inner cavity of the hydraulic cylinder. The piston is fixedly connected to the extension section of the electric telescopic column via an L-shaped connecting rod, and the hydraulic cylinder is connected to the first blocking assembly and the second blocking assembly via oil pipes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] When the paper towel passes through the folding roller body, even in the case of insufficient vacuum, the residual vacuum suction can still be combined with the friction force on the lifting plate and the two flip plates to make the paper towel fit on the second folding roller and successfully complete the subsequent folding operation; when the folding device is worn, the worn folding device can be replaced by replacing the assembly to maintain a good folding effect, and the folding device can be replaced without stopping the machine. Compared with stopping for maintenance, it not only saves manpower but also has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the installation positions of the components of the present invention;

[0021] Figure 3 It is a cross-sectional schematic diagram of the overall structure of the present invention;

[0022] Figure 4 For the present invention Figure 3 A magnified image of point A;

[0023] Figure 5 is a cross-sectional schematic diagram of the second folding roller of the present invention;

[0024] Figure 6 It is a schematic diagram of the installation position of the adsorption component of the present invention;

[0025] Figure 7 For the present invention Figure 6 A magnified view of point B;

[0026] Figure 8 It is a disassembly schematic diagram of the second folding roller and the adsorption assembly of the present invention;

[0027] Fig. 9 For the present invention Figure 8 Enlarged view of point C;

[0028] Fig.10 It is a schematic diagram of the connection relationship between the replacement component and the hydraulic component of the present invention;

[0029] Fig.11 It is a disassembly diagram of the replacement assembly and the folding device of the present invention;

[0030] Fig.12 It is a schematic diagram of the connection between the replacement component and the folding device of the present invention;

[0031] Fig.13 It is a cross-sectional schematic diagram of the hydraulic assembly of the present invention.

[0032] In the figure: 1, mounting plate; 2, first guide roller; 3, second guide roller; 4, third guide roller; 5, first bottom knife roller; 51, knife roller body; 52, first vacuum chamber; 53, first suction hole; 6, second bottom knife roller; 7, first folding roller; 8, second folding roller; 81, folding roller body; 82, second vacuum chamber; 83, airway; 84, V-shaped groove; 85, slide groove; 86, collection groove; 87, storage groove; 88, second suction hole; 9, paper towel; 10, first blocking component; 101, shell; 102, blocking plate; 103, first spring; 20, second blocking component; 30, replacement group Components; 301, electric telescopic column; 302, clamping assembly; 3021, long board; 3022, deep groove; 3023, long groove; 3024, clamping block; 3025, second spring; 40, folding device; 401, folding block; 402, magnetic clamping head; 50, adsorption assembly; 501, elastic hinge; 502, flip plate; 503, lifting plate; 5031, plate body; 5032, permanent magnet; 504, limit hinge; 505, third suction hole; 60, electromagnet A; 70, hydraulic assembly; 701, hydraulic cylinder; 702, piston; 703, L-shaped connecting rod; 704, oil pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to solve the technical problem that the vacuum degree on the folding mechanism is reduced, the paper towel 9 cannot be adsorbed on the surface of the folding roller body 81, resulting in deviation of the folding marks of the paper towel 9 and wrinkles on the paper towel 9, affecting product quality and causing waste of raw materials, such as Figure 1-Figure 13 As shown, the following preferred technical solutions are provided:

[0035] A folding device for paper towel processing includes two mounting plates 1 mounted on paper towel processing equipment, a pair of first guide rollers 2, a pair of second guide rollers 3 and a pair of third guide rollers 4 are mounted on the two mounting plates 1 for co-rotation, a visual probe is also fixedly mounted on the mounting plates 1, the mounting plates 1 are provided to support and fix many parts, and the first guide roller 2, the second guide roller 3 and the third guide roller 4 are provided to guide the raw materials during the folding process, so as to facilitate the subsequent folding operation, the visual probe is used to judge whether the folding state is good, a first bottom knife roller 5, a second bottom knife roller 6, a first folding roller 7 and a second folding roller 8 are also mounted on the two mounting plates 1 for co-rotation, a paper towel 9 is placed on the outer surface of the first guide roller 2, the first bottom knife roller 5 and the second bottom knife roller 6 not only have a guiding function, but also are provided with cutters on the first bottom knife roller 5 and the second bottom knife roller 6, so as to cut the passing paper towel 9 into a suitable length.

[0036] The paper towel 9 is folded into a Z shape by passing through the first guide roller 2, the second guide roller 3 and the third guide roller 4, the first bottom knife roller 5, the second bottom knife roller 6, the first folding roller 7 and the second folding roller 8 in sequence. The second folding roller 8 is provided with a first blocking component 10, a second blocking component 20 and a replacement component 30 respectively. The first blocking component 10 and the second blocking component 20 are arranged in symmetrical positions. A folding device 40 is fixedly installed at the output end of the replacement component 30. The folding device 40 is embedded and slidably installed on the second folding roller 8, and the triangular part of the folding device 40 protrudes from the second folding roller 8. On the outer wall of the second folding roller 8, the folding device 40 is used to press creases on the paper towel 9 to facilitate the subsequent folding of the paper towel 9 into a Z shape. After a long period of use, the angle of the triangular part of the folding device 40 will become blunt, so that the folding angle of the paper towel 9 will also become larger, which is not conducive to the subsequent folding of the paper towel 9 into a Z shape. The replacement component 30 is used to replace the worn folding device 40 to maintain a good folding effect. The first blocking component 10 and the second blocking component 20 are used to assist the replacement component 30 in completing the replacement operation of the folding device 40.

[0037] A plurality of adsorption components 50 are rotatably mounted on the outer wall of the second folding roller 8, and a plurality of electromagnets A60 are also fixedly mounted on the outer wall of the second folding roller 8. When the second folding roller 8 fails, the vacuum degree in the second folding roller 8 is reduced, and the paper towel 9 cannot be adsorbed on the surface of the second folding roller 8, the electromagnet A60 is started to push the adsorption component 50 to the outside of the second folding roller 8, so that the adsorption component 50 is flush with the outer wall of the second folding roller 8. Since the adsorption component 50 still has a large friction force, when the paper towel 9 passes through the second folding roller 8, the vacuum suction force and the friction force of the adsorption component 50 can still make the paper towel 9 stick to the surface of the second folding roller 8. The second folding roller 8 is folded on the second folding roller 8 to smoothly complete the subsequent folding operation. A plurality of hydraulic components 70 are also fixedly installed inside the second folding roller 8. The hydraulic components 70 are fixedly connected to the extension section of the replacement component 30. The hydraulic components 70 are connected to the first plugging component 10 and the second plugging component 20 respectively, and the hydraulic components 70, the first plugging component 10 and the second plugging component 20 are all filled with hydraulic oil. When the replacement component 30 is running, the opening and closing of the first plugging component 10 and the second plugging component 20 can be controlled by the hydraulic component 70, so as to assist the replacement component 30 in completing the replacement operation of the folding device 40.

[0038] The first bottom knife roller 5 includes a knife roller body 51 rotatably mounted on the mounting plate 1, a first vacuum chamber 52 is provided inside the knife roller body 51, a vacuum device is externally connected to the first vacuum chamber 52 for generating a vacuum environment inside the first vacuum chamber 52, a plurality of first suction holes 53 are provided on the outer peripheral wall of the knife roller body 51, the first suction holes 53 are connected to the first vacuum chamber 52, the composition structure and connection method of the first bottom knife roller 5 and the second bottom knife roller 6 are consistent, when the paper towel 9 passes through the knife roller body 51, the negative pressure in the first suction hole 53 will adsorb the paper towel 9 on the outer peripheral wall of the knife roller body 51, and after the paper towel 9 is cut into a suitable length by the cutter, the cut paper towel 9 is transferred to the first folding roller 7 and the second folding roller 8 for folding.

[0039] The second folding roller 8 includes a folding roller body 81 rotatably mounted on the mounting plate 1, a second vacuum chamber 82 is provided inside the folding roller body 81, and a vacuum device is externally connected to the second vacuum chamber 82 for generating a vacuum environment inside the first vacuum chamber 52, a plurality of V-shaped grooves 84 are provided on the outer peripheral wall of the folding roller body 81, and the plurality of V-shaped grooves 84 are arranged in a circular array, and the V-shaped grooves 84 are provided for cooperating with the folding device 40 to fold the paper towel 9 into creases for subsequent folding, a plurality of second suction holes 88 are provided on the bottom surface of the inner cavity of the V-shaped groove 84, and the second suction holes 88 are connected to the second vacuum chamber 82 through an airway 83, and when the paper towel 9 passes through the folding roller body 81, the negative pressure in the second suction holes 88 will adsorb the paper towel 9 on the outer peripheral wall of the folding roller body 81, thereby driving the paper towel 9 to be folded.

[0040] The inner cavity of the V-shaped groove 84 is embedded with an adsorption component 50 for rotation. The interior of the folding roller body 81 is provided with a slide groove 85. The side walls of the slide groove 85 close to the second vacuum chamber 82 are respectively fixedly provided with a replacement component 30 and a hydraulic component 70. The folding device 40 is slidably arranged in the inner cavity of the slide groove 85. The inner walls on both sides of the slide groove 85 are respectively provided with a collection groove 86 and a storage groove 87. The storage groove 87 is pre-placed with a spare folding device 40. The collection groove 86 is used to collect the replaced worn folding device 40. The inner walls on both sides of the slide groove 85 are also provided with a collection groove 86 and a storage groove 87. A first plugging component 10 and a second plugging component 20 are fixedly installed. The first plugging component 10 can play a plugging role on the collection tank 86, and the second plugging component 20 can play a plugging role on the storage tank 87. The second folding roller 8 and the first folding roller 7 have the same composition structure and connection method. The first plugging component 10 prevents the replaced worn-out folder 40 from slipping out of the collection tank 86 and affecting the normal operation of the equipment. The second plugging component 20 is also to prevent the spare folder 40 from slipping out of the storage tank 87 and affecting the normal operation of the equipment.

[0041] The adsorption component 50 includes two pairs of elastic hinges 501 rotatably mounted on the inner walls on both sides of the V-shaped groove 84, and a flip plate 502 is fixedly mounted on each two elastic hinges 501. The two flip plates 502 are arranged in symmetrical positions, and a lifting plate 503 is arranged in the gap between the two flip plates 502. The lifting plate 503 and the two flip plates 502 are rotatably connected through a limiting hinge 504. The outer walls of the two flip plates 502 and the top surface of the lifting plate 503 will generate a large friction force on the paper towel 9. A plurality of third suction holes 505 are opened on the lifting plate 503, and the third suction holes 505 are aligned with the second suction holes 88. The purpose of such a setting is that when the vacuum degree in the second vacuum chamber 82 is normal and the adsorption component 50 is not operating, it will not affect the adsorption effect on the paper towel 9.

[0042] The lifting plate 503 includes a plate body 5031 , on the bottom surface of which a plurality of permanent magnets 5032 are fixedly mounted. The permanent magnets 5032 are aligned with the electromagnet A60 .

[0043] Specifically, when the second folding roller 8 fails, causing the vacuum degree in the second vacuum chamber 82 to decrease and making it impossible to adsorb the paper towel 9 on the surface of the folding roller body 81, the electromagnet A60 is started to generate a repulsive force on the permanent magnet 5032, pushing the lifting plate 503 out of the V-shaped groove 84. During the outward movement of the lifting plate 503, under the pulling action of the limiting hinge 504, the two flip plates 502 begin to flip synchronously. Under the limiting action of the limiting hinge 504, when the lifting plate 503 and the two flip plates 502 reach a flush state, When the maximum flipping angle is reached, the lifting plate 503 and the two flip plates 502 are flush with the outer wall of the folding roller body 81. Since the outer walls of the two flip plates 502 and the top surface of the lifting plate 503 will generate a large friction force on the paper towel 9, when the paper towel 9 passes through the folding roller body 81, even in the case of insufficient vacuum, the residual vacuum suction force can still cooperate with the friction force on the lifting plate 503 and the two flip plates 502, so that the paper towel 9 can be attached to the second folding roller 8, and the subsequent folding operation can be completed smoothly.

[0044] When the vacuum degree in the second vacuum chamber 82 returns to a normal state, the electromagnet A60 is powered off, and under the elastic force of the elastic hinge 501, the two flip plates 502 drive the lifting plate 503 to return to the initial position for next use, and the elastic force value of the elastic hinge 501 is set within a suitable range, so that when the folding roller body 81 rotates at a high speed, the centrifugal force will not cause the lifting plate 503 and the two flip plates 502 to be thrown out of the V-shaped groove 84, thereby not affecting the normal folding of the paper towel 9.

[0045] In order to solve the technical problem that after the folding device 40 is used for a long time, the angle of the contact part between the folding device 40 and the paper towel 9 becomes blunt, so that the angle of the folded part of the paper towel 9 becomes larger, which is not conducive to the subsequent folding of the paper towel 9 into a Z shape, thereby causing the overall folding effect of the paper towel 9 to decrease, such as Figure 4-Figure 6 , Figure 8 and Figure 10-13 As shown, the following preferred technical solutions are provided:

[0046] The first sealing component 10 includes an outer shell 101 fixedly mounted on the inner wall of one side of the slide groove 85 and a sealing plate 102 embedded and slidably mounted in the inner cavity of the outer shell 101. The interior of the outer shell 101 is filled with hydraulic oil. The outer shell 101 and the sealing plate 102 are elastically connected by a first spring 103. The sealing plate 102 is used to seal the collection groove 86. The composition structure and connection method of the first sealing component 10 and the second sealing component 20 are consistent.

[0047] The replacement component 30 includes an electric telescopic column 301 fixedly mounted on the side wall of the slide slot 85 , and a snap-fit ​​component 302 is fixedly mounted on the output end of the electric telescopic column 301 , and a snap-fit ​​relationship can be formed between the snap-fit ​​component 302 and the folding device 40 .

[0048] The clamping assembly 302 includes a long plate 3021, and a plurality of deep grooves 3022 are provided on the side wall of the long plate 3021 near the folding device 40. An electromagnet B is built into the inner cavity of the deep groove 3022. Long grooves 3023 are respectively provided on the inner walls on both sides of the deep groove 3022. A clamping block 3024 is slidably embedded in the inner cavity of the long groove 3023. The clamping block 3024 is elastically connected to the side wall of the inner cavity of the long groove 3023 through a second spring 3025.

[0049] The folding device 40 comprises a folding block 401 , on the side wall of the folding block 401 close to the clamping assembly 302 , a plurality of magnetic clamps 402 are fixedly mounted, and the magnetic clamps 402 are aligned with the electromagnet B in the deep groove 3022 .

[0050] The hydraulic assembly 70 includes a hydraulic cylinder 701 fixedly mounted on the side wall of the slide groove 85 and a piston 702 slidably mounted in the inner cavity of the hydraulic cylinder 701. The piston 702 is fixedly connected to the extension section of the electric telescopic column 301 via an L-shaped connecting rod 703. The hydraulic cylinder 701 is connected to the first blocking assembly 10 and the second blocking assembly 20 via oil pipes 704, respectively.

[0051] Specifically, when the folding block 401 has been used for a long time, the angle of the triangular part of the folding block 401 will become blunt, so that the folding angle of the paper towel 9 will also become larger, which is not conducive to the subsequent folding of the paper towel 9 into a Z shape. At this time, the rotation speed of the first folding roller 7 and the second folding roller 8 is slowed down. During the rotation of the folding roller body 81, when the opening of the collection groove 86 faces upward, the electric telescopic column 301 begins to shorten and drives the folding device 40 to move toward the inner cavity of the slide groove 85 through the clamping assembly 302. During the shortening of the electric telescopic column 301, the piston 702 will be driven to slide in the inner cavity of the hydraulic cylinder 701 through the L-shaped connecting rod 703, thereby reducing the oil pressure inside the shell 101. Under the elastic force of the first spring 103, the sealing plate 102 retracts into the inner cavity of the shell 101, and loses its sealing effect on the collection groove 86. At the same time, the second sealing assembly 20 loses its sealing effect on the storage groove 87 by the same principle.

[0052] The spare tumbler 40 in the storage slot 87 tends to slide into the inner cavity of the slide slot 85 under the action of gravity. Since the worn tumbler 40 also slides in the inner cavity of the slide slot 85, the worn tumbler 40 hinders the spare tumbler 40 so that the spare tumbler 40 will not fall directly. As the electric telescopic column 301 continues to shorten, the worn tumbler 40 will be hindered by the first blocking component 10 and the second blocking component 20. When the reaction force is greater than the elastic force of the second spring 3025, the block 3024 will retract into the inner cavity of the long slot 3023, so that the magnetic clamp 402 is pulled out from the inner cavity of the deep slot 3022. The restriction is released, so that the worn folder 40 falls into the collection groove 86 for collection under the action of its own gravity. After the worn folder 40 falls into the collection groove 86, the blocking effect of the spare folder 40 is lost, and the spare folder 40 will fall from the storage groove 87 to the inner cavity of the slide groove 85. At this time, the electromagnet B built into the inner cavity of the deep groove 3022 starts to be energized, generating suction to the magnetic clamp 402. After the magnetic clamp 402 is inserted into the inner cavity of the deep groove 3022 and the clamping is completed, the electromagnet B is de-energized, and then the electric telescopic column 301 starts to extend, pushing the replaced folder 40 to the outside of the slide groove 85, and continuing the subsequent folding operation.

[0053] During the extension of the electric telescopic column 301, the L-shaped connecting rod 703 will drive the piston 702 to slide in the inner cavity of the hydraulic cylinder 701 in the opposite direction, thereby increasing the oil pressure inside the housing 101. When the oil pressure is greater than the elastic force of the first spring 103, the sealing plate 102 extends from the inner cavity of the housing 101 to seal the collection tank 86. At the same time, the second sealing component 20 uses the same principle to restore the sealing effect on the storage tank 87, thereby preventing the replaced worn deflector 40 from slipping out of the collection tank 86 and affecting the normal operation of the equipment.

[0054] Through the above operation, the worn folding device 40 can be replaced to maintain a good folding effect, and the folding device 40 can be replaced without stopping the machine. Compared with stopping for maintenance, it not only saves manpower but also has high production efficiency.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A folding device for paper towel processing, comprising two mounting plates (1) mounted on a paper towel processing device, a pair of first guide rollers (2), a pair of second guide rollers (3) and a pair of third guide rollers (4) being mounted on the two mounting plates (1) for co-rotation, and a visual probe being fixedly mounted on the mounting plates (1), characterized in that: The two mounting plates (1) are also rotatably mounted with a first bottom knife roller (5), a second bottom knife roller (6), a first folding roller (7) and a second folding roller (8); a paper towel (9) is placed in contact with the outer surface of the first guide roller (2); the paper towel (9) passes through the first guide roller (2), the second guide roller (3) and the third guide roller (4), the first bottom knife roller (5), the second bottom knife roller (6), the first folding roller (7) and the second folding roller (8) in sequence and is folded into a Z shape; a first blocking component (10), a second blocking component (20) and a replacement component (30) are respectively arranged inside the second folding roller (8); the first blocking component (10) and the second blocking component (20) are arranged in symmetrical positions; a folding device (40) is fixedly mounted at the output end of the replacement component (30) The folding device (40) is embedded and slidably mounted on the second folding roller (8), and the triangular portion of the folding device (40) protrudes from the outer wall of the second folding roller (8). A plurality of adsorption components (50) are embedded and rotatably mounted on the outer wall of the second folding roller (8). A plurality of electromagnets A (60) are also embedded and fixedly mounted on the outer wall of the second folding roller (8). A plurality of hydraulic components (70) are also fixedly mounted inside the second folding roller (8). The hydraulic components (70) are fixedly connected to the elongated section of the replacement component (30). The hydraulic components (70) are connected to the first blocking component (10) and the second blocking component (20) respectively. The hydraulic components (70), the first blocking component (10) and the second blocking component (20) are all filled with hydraulic oil. The first bottom knife roller (5) comprises a knife roller body (51) rotatably mounted on a mounting plate (1); a first vacuum chamber (52) is provided inside the knife roller body (51); a plurality of first suction holes (53) are provided on an outer peripheral wall of the knife roller body (51); the first suction holes (53) are connected to the first vacuum chamber (52); the first bottom knife roller (5) and the second bottom knife roller (6) have the same composition structure and connection method; The second folding roller (8) comprises a folding roller body (81) rotatably mounted on a mounting plate (1), a second vacuum chamber (82) being provided inside the folding roller body (81), a plurality of V-shaped grooves (84) being provided on the outer peripheral wall of the folding roller body (81), the plurality of V-shaped grooves (84) being arranged in a circular array, a plurality of second suction holes (88) being provided on the bottom surface of the inner cavity of the V-shaped groove (84), the second suction holes (88) being connected to the second vacuum chamber (82) via an airway (83), an adsorption assembly (50) being rotatably mounted in the inner cavity of the V-shaped groove (84), a slide groove (85) being provided inside the folding roller body (81), the slide groove (85) A replacement component (30) and a hydraulic component (70) are fixedly mounted on the side walls close to the second vacuum chamber (82), and a folding device (40) is slidably arranged in the inner cavity of the slide groove (85). A collection groove (86) and a storage groove (87) are respectively provided on the inner walls on both sides of the slide groove (85). A first blocking component (10) and a second blocking component (20) are also fixedly mounted on the inner walls on both sides of the slide groove (85). The first blocking component (10) can block the collection groove (86), and the second blocking component (20) can block the storage groove (87). The second folding roller (8) and the first folding roller (7) have the same composition structure and connection method. The adsorption assembly (50) comprises two pairs of elastic hinges (501) rotatably mounted on the inner walls of both sides of the V-shaped groove (84), a flip plate (502) being fixedly mounted on each of the two elastic hinges (501), the two flip plates (502) being arranged in symmetrical positions, a lifting plate (503) being arranged in the gap between the two flip plates (502), the lifting plate (503) being rotatably connected to the two flip plates (502) via a limiting hinge (504), a plurality of third suction holes (505) being provided on the lifting plate (503), the third suction holes (505) being arranged in alignment with the second suction holes (88); The lifting plate (503) comprises a plate body (5031), and a plurality of permanent magnets (5032) are fixedly mounted on the bottom surface of the plate body (5031), and the permanent magnets (5032) are aligned with the electromagnet A (60); The first blocking component (10) comprises a shell (101) fixedly mounted on an inner wall of one side of the slide groove (85) and a blocking plate (102) embedded and slidably mounted in an inner cavity of the shell (101); the shell (101) is filled with hydraulic oil; the shell (101) and the blocking plate (102) are elastically connected via a first spring (103); the blocking plate (102) is used to block the collection groove (86); the first blocking component (10) and the second blocking component (20) have the same composition structure and connection method; The replacement component (30) comprises an electric telescopic column (301) fixedly mounted on a side wall of the slide groove (85); a clamping component (302) is fixedly mounted on the output end of the electric telescopic column (301); and a clamping relationship can be formed between the clamping component (302) and the folding device (40); The clamping assembly (302) comprises a long plate (3021), a plurality of deep grooves (3022) are provided on the side wall of the long plate (3021) close to the folding device (40), an electromagnet B is built into the inner cavity of the deep groove (3022), long grooves (3023) are respectively provided on the inner walls on both sides of the deep groove (3022), a clamping block (3024) is slidably embedded in the inner cavity of the long groove (3023), and the clamping block (3024) is elastically connected to the side wall of the inner cavity of the long groove (3023) via a second spring (3025); The folding device (40) comprises a folding block (401), and a plurality of magnetic clamps (402) are fixedly mounted on the side wall of the folding block (401) close to the clamping assembly (302), and the magnetic clamps (402) are arranged in an aligned position with the electromagnet B in the deep groove (3022); The hydraulic assembly (70) comprises a hydraulic cylinder (701) fixedly mounted on the side wall of the slide groove (85) and a piston (702) slidably mounted in the inner cavity of the hydraulic cylinder (701); the piston (702) is fixedly connected to the extension section of the electric telescopic column (301) via an L-shaped connecting rod (703); and the hydraulic cylinder (701) is connected to the first blocking assembly (10) and the second blocking assembly (20) via oil pipes (704).

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