CN110436255B - Extraction type facial tissue production line and production process thereof - Google Patents
Extraction type facial tissue production line and production process thereof Download PDFInfo
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- CN110436255B CN110436255B CN201910830490.0A CN201910830490A CN110436255B CN 110436255 B CN110436255 B CN 110436255B CN 201910830490 A CN201910830490 A CN 201910830490A CN 110436255 B CN110436255 B CN 110436255B
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- paper
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- folding device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
- B65B35/30—Arranging and feeding articles in groups
- B65B35/50—Stacking one article, or group of articles, upon another before packaging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
- B65B63/04—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for folding or winding articles, e.g. gloves or stockings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/24—Interfolding sheets, e.g. cigarette or toilet papers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/26—Folding in combination with unpiling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/28—Folding in combination with cutting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
The invention discloses an extraction type facial tissue production line, which comprises a folding device, a paper cutting device, a paper storage device and a paper tail folding device, wherein the paper tail folding device is arranged on the paper storage device, the paper tail folding device is matched with the paper storage device, the folding device, the paper tail folding device and the paper cutting device are sequentially connected through a conveying device, the paper storage device comprises a rack, and a paper storage mechanism, a pushing-in mechanism and a pushing-out mechanism which are arranged on the rack, the conveying device and the paper tail folding device are positioned on one side of the paper storage mechanism, the paper tail folding device is positioned above the conveying device for placing a paper stack conveyed from the folding device, and the pushing-in mechanism and the pushing-out mechanism are respectively positioned on two sides of the paper stack. Also discloses a production process of the production line. The paper storage device is arranged, so that the paper stack is provided with a transition cache on the paper storage device, and when the previous folding device or the following paper cutting device stops operating for a short time, the operation of another device cannot be influenced, thereby ensuring continuous production and improving the production efficiency.
Description
Technical Field
The invention relates to the field of paper processing equipment, in particular to a removable facial tissue production line and a production process thereof.
Background
The tissue is widely used as toilet paper, and the production process of the tissue is as follows: the method comprises the steps of producing a long strip-shaped paper extraction raw paper stack in advance through a folding machine, cutting the long strip-shaped paper extraction raw paper stack into a plurality of small sections of paper extraction which meet packaging specifications through a paper cutting machine, and packaging the sections of paper extraction. In the prior art, various devices in a production line need to operate synchronously, and if one device stops operating, other devices also need to stop operating, namely, a folder stops and a folder stops, or the folder stops and the folder stops passively, so that the production efficiency is influenced.
Disclosure of Invention
The invention aims to provide a production line of removable facial tissues with high production efficiency and a production process realized by applying the production line, which can solve at least one of the problems.
According to one aspect of the invention, the extraction type facial tissue production line comprises a folding device, a paper cutting device, a paper storage device and a paper tail folding device, wherein the paper tail folding device is installed on the paper storage device, the paper tail folding device is matched with the paper storage device, the folding device, the paper tail folding device and the paper cutting device are sequentially connected through a conveying device, the paper storage device comprises a rack, a paper storage mechanism, a pushing-in mechanism and a pushing-out mechanism, the paper storage mechanism, the pushing-in mechanism and the pushing-out mechanism are arranged on the rack, the conveying device and the paper tail folding device are located on one side of the paper storage mechanism, the paper tail folding device is located above the conveying device for placing a paper stack conveyed from the folding device, and the pushing-in mechanism and the pushing-out mechanism are respectively located on;
the paper tail folding device is configured to fold the topmost paper sheet of the paper stack;
the pushing mechanism is configured to push the paper stack after the paper tail folding device is folded to the paper storage mechanism;
the pushing mechanism is configured to push the paper stack stored in the paper storage mechanism to the conveying device;
the conveying device is configured to convey the paper stack after being folded by the paper tail folding device or the paper stack pushed by the pushing-out mechanism to the paper cutting device.
Therefore, the paper storage device for storing the paper stack is arranged between the folding device and the paper cutting device in the extraction type facial tissue production line, so that the paper stack is provided with a transition buffer on the paper storage device, when the previous folding device or the following paper cutting device stops operating for a short time, the operation of another device cannot be influenced, and the whole production line cannot be paralyzed due to the failure or halt of one device, so that the continuous production is ensured, and the production efficiency is improved.
Simultaneously, be provided with the paper tail folding device who possesses a paper folding function in storage paper device department, can fold the paper of paper buttress top through paper tail folding device before storing, the paper buttress that stores on this storage buffer equipment promptly is the paper buttress that has been folded, and subsequent processing of being convenient for has improved production efficiency greatly.
In addition, the paper storage device is provided with a pushing-in mechanism and a pushing-out mechanism, so that the folded paper stacks can be pushed into the paper storage device quickly, the paper stacks on the paper storage device can be pushed out quickly, and continuous production is guaranteed.
In some embodiments, the paper storage mechanism includes a fourth driving member, a transmission mechanism and a paper storage rack, the transmission mechanism includes transmission chain groups symmetrically arranged at two sides of the rack respectively, each transmission chain group includes a transmission chain wheel and a transmission chain mounted on the transmission chain wheel, the paper storage rack is used for placing paper stacks, two ends of the paper storage rack are connected with the transmission chains at two sides respectively and move along with the transmission chains, at least one paper storage rack includes a weight strip and at least two side-by-side L-shaped paper supporting plates, a gap is reserved between two adjacent L-shaped paper supporting plates, the L-shaped paper supporting plates are mounted on the weight strip, two ends of the weight strip are hinged to the transmission chains at two sides respectively, the transmission chain groups include a first transmission chain wheel group and a second transmission chain wheel group arranged at the same side of the rack, the transmission chains are mounted around the first transmission chain wheel group and the second transmission chain wheel group, the first transmission chain wheel group includes four transmission chain wheels and are located at four corners, the second transmission chain wheel group at least comprises a group of transmission chain wheels which are arranged up and down, the transmission chain wheels of the second transmission chain wheel group are positioned among the four transmission chain wheels of the first transmission chain wheel group, and the transmission chain between the two chain wheels of the first transmission chain wheel group close to the paper tail folding device can penetrate through the space between the pushing mechanism and the conveying device. Therefore, the transmission chain set is simple in structure and high in transmission efficiency. The fourth driving part drives one transmission chain wheel of the transmission mechanism to rotate, and drives other transmission chain wheels to rotate through the transmission chain, so that the movement of the paper storage rack on the transmission chain is completed.
In some embodiments, the pushing mechanism includes a fifth driving member and a paper pushing beam, at least two parallel pushing plates are disposed on the paper pushing beam, a gap is left between the two parallel pushing plates, and the arrangement positions of the pushing plates are staggered with the arrangement positions of the L-shaped paper supporting plates of the paper storage rack, and the pushing plates can penetrate through the gap between the L-shaped paper supporting plates of the paper storage rack to push the paper stack on the L-shaped paper supporting plates to the conveying device under the driving of the fifth driving member.
In some embodiments, the paper tail folding device comprises a pressing plate, a pressing plate lifting adjusting Z-axis mechanism, a vacuum generating mechanism and a pressing plate front-back adjusting Y-axis mechanism, the pressing plate front-back adjusting Y-axis mechanism is installed on the frame, the pressing plate lifting adjusting Z-axis mechanism is installed on the pressing plate front-back adjusting Y-axis mechanism, the pressing plate is installed above a paper stack on the conveying device, the vacuum generating mechanism is installed on the pressing plate, a plurality of suction holes connected with the vacuum generating mechanism are formed in the pressing plate, the vacuum generating mechanism is matched with the suction holes in the pressing plate and can enable the suction holes to suck or loosen the topmost paper of the paper stack, and the suction position of the suction holes is one end, close to the paper tail, of the topmost paper of the paper stack. Therefore, the paper tail folding device has the working principle that: when the paper stack is conveyed to the conveying device, the pressing plate moves forwards and then moves downwards to press the paper stack under the action of the pressing plate front-back adjusting Y-axis mechanism and the pressing plate lifting adjusting Z-axis mechanism, so that the suction hole on the pressure plate is contacted with one end of the paper at the topmost end of the paper stack close to the paper tail, the vacuum generating mechanism works, so that the paper tail of the topmost paper of the paper stack is adsorbed on the lower surface of the pressing plate by the suction hole, the pressing plate moves upwards firstly, then moves backwards to return to the initial position and finally presses downwards on the paper stack under the action of the Y-axis mechanism for adjusting the front and back of the pressing plate and the Z-axis mechanism for adjusting the lifting of the pressing plate, the paper tail of the topmost paper of the paper stack is folded, the vacuum generating mechanism stops working, the suction hole is separated from the topmost paper sheet of the paper stack, the pressing plate moves upwards to return to the initial position, and the conveying device or the pushing mechanism works to convey the paper stack to the next process.
In some embodiments, the pressing plate front-back adjustment Y-axis mechanism comprises a first driving piece, a connecting plate, a sliding block and a guide rail, the pressing plate lifting adjustment Z-axis mechanism is installed on the connecting plate, the first driving piece is installed on the frame, one end of the first driving piece is connected with the connecting plate, the guide rail is fixedly installed on the frame, the sliding block is installed at the bottom of the connecting plate and sleeved on the guide rail, the sliding block is in sliding fit with the guide rail, the pressing plate lifting adjustment Z-axis mechanism comprises a second driving piece, and the second driving piece is installed on the connecting plate. Therefore, the working principle of the Y-axis mechanism for adjusting the front and the back of the pressure plate is as follows: the first driving frame drives the connecting plate to stretch along the Y-axis direction, the sliding block at the bottom of the connecting plate slides along the guide rail, the pressing plate which is installed on the pressing plate lifting adjusting Z-axis mechanism and installed on the pressing plate lifting adjusting Z-axis mechanism is driven to stretch along the Y-axis direction, and front and back feeding of the pressing plate is completed. The working principle of the Z-axis mechanism for lifting and adjusting the pressing plate is as follows: the second driving piece drives the vacuum generating mechanism and the pressing plate to extend and retract along the Z axis, and then the lifting adjustment of the pressing plate is completed.
In some embodiments, the vacuum generating mechanism comprises a plurality of vacuum generators, the vacuum generators are mounted on the pressing plate and distributed along the length direction of the pressing plate, one end of each vacuum generator is connected with the suction hole of the pressing plate, the other end of each vacuum generator is connected with the Z-axis lifting adjusting mechanism of the pressing plate, the vacuum generators are connected through pipelines, and one end of each pipeline is externally connected with compressed air. Therefore, the vacuum generating mechanism utilizes the jet flow principle, external compressed air passes through the vacuum generator, so that vacuum is generated at the suction hole, and then the paper at the topmost end of the paper stack is adsorbed on the pressing plate, thereby facilitating subsequent folding work. The vacuum generating mechanism does not contain a motor, so that equipment is saved, the whole volume is small, and the occupied space is small; meanwhile, the failure rate of the system is reduced, and the production efficiency is improved.
In some embodiments, the pushing mechanism includes a sixth driving element and a pushing plate, the sixth driving element is mounted on the frame, and one end of the sixth driving element is connected to the pushing plate for driving the pushing plate to extend and retract, and the pushing plate is located on one side of the paper stack on the conveying device, which is far away from the paper storage device, and is located below the pressing plate.
In some embodiments, the extraction facial tissue production line further comprises a packaging device located behind the paper cutting device and connected with the paper cutting device through the conveying device, the packaging device being configured to package the paper stack pieces cut by the paper cutting device.
According to another aspect of the invention, the production process of the extraction type facial tissue production line comprises the following steps:
s1, processing the paper body paper by a folding device to obtain a paper stack;
s2, conveying the paper stack to the lower part of a pressing plate of the paper tail folding device through the conveying device;
s3, the paper tail folding device starts to work, and the paper at the topmost end of the paper stack below the pressing plate is folded;
s4, when the paper cutting device is busy, fails or stops, the pushing mechanism starts to work, and the paper stack after the paper tail folding device is folded is pushed to a paper storage rack of the paper storage mechanism to be stored;
s5, when the paper cutting device works normally, the paper stack after being folded by the paper tail folding device is directly conveyed to the paper cutting device through the conveying device without being pushed to the paper storage rack through a pushing mechanism for storage;
s6, when the folding device breaks down or stops, the pushing mechanism starts to work, and pushes the paper stack stored on the paper storage rack to the conveying device and conveys the paper stack to the paper cutting device through the conveying device;
s7, the paper cutting device works to cut the paper stack conveyed by the conveying device to obtain a paper stack block;
and S8, operating the packaging device, and packaging the paper pile blocks conveyed from the paper cutting device to obtain finished products.
Therefore, when the folding device or the paper cutting device behind the folding device fails or stops, the operation of another device cannot be influenced, the whole production line cannot be broken down due to the failure or the stop of one device, the continuous production is ensured, and the production efficiency is high.
In some embodiments, in step S3, the operation of the tail folding device includes the following steps:
s301, conveying the paper stack from the folding device to the position below the pressing plate under the action of the conveying device, and stopping the conveying device;
s302, the pressing plate located at the initial position moves forwards and downwards under the action of a first driving piece of the Y-axis mechanism for adjusting the front and back of the pressing plate and a second driving piece of the Z-axis mechanism for adjusting the lifting of the pressing plate, and presses the paper stack downwards, so that a suction hole in the pressing plate is in contact with one end, close to the tail, of the paper at the top end of the paper stack;
s303, the vacuum generator starts to work, air is sucked, and under the action of the suction holes, the tail of the topmost paper of the paper stack is adsorbed on the lower surface of the pressing plate;
s304, the pressing plate moves upwards firstly, then moves backwards to return to the initial position and finally presses downwards to the paper stack under the action of a first driving piece of the Y-axis mechanism for adjusting the front and back of the pressing plate and a second driving piece of the Z-axis mechanism for adjusting the lifting of the pressing plate, and the paper tail of the topmost paper of the paper stack is folded;
s305, stopping working of the vacuum generator, deflating, separating paper at the top end of the paper stack from a suction hole in the pressing plate, and enabling the pressing plate to move upwards to return to the initial position under the action of a second driving piece of the Z-axis lifting adjusting mechanism of the pressing plate;
s306, the conveying device works to convey the paper stack to the next procedure;
and S307, repeating the steps S301 to S306.
Therefore, the paper tail folding device provides a brand new paper folding method, the suction position of the suction hole is one end, close to the paper tail, of the topmost paper of the paper stack, the paper tail of the topmost paper of the paper stack can be guaranteed not to droop in the moving process of the pressing plate, the pressing plate moves under the driving of a two-axis driving system of a Y-axis mechanism for adjusting the front and back of the pressing plate and a Z-axis mechanism for adjusting the lifting of the pressing plate, and finally the paper tail of the topmost paper is pressed downwards to be in a Z shape. The paper folding method of the invention is not to fold the paper tail inwards, but to directly lift the paper from the paper tail and then press the paper tail downwards to form the Z-shaped paper folding, the whole paper folding process is simple, the paper folding efficiency is high, and the whole structure is simple without additionally arranging a bending mechanism.
The invention has the beneficial effects that:
1. the paper storage device for storing the paper stack is arranged between the folding device and the paper cutting device, so that the paper stack is provided with a transition buffer on the paper storage device, when the folding device at the front or the paper cutting device at the back stops operating for a short time, the operation of another device cannot be influenced, and the whole production line cannot be paralyzed due to the failure or the halt of one device, thereby ensuring the continuous production and improving the production efficiency.
2. Store up paper device department and be provided with the paper tail folding device who possesses a paper function of partly folding, can fold the paper of paper buttress top through paper tail folding device before storing, store the paper buttress on this storage buffer equipment promptly and be the paper buttress that has been folded, subsequent processing of being convenient for has improved production efficiency greatly.
3. The paper storage device is provided with the pushing mechanism and the pushing mechanism, so that the folded paper stacks can be pushed into the paper storage device quickly, the paper stacks on the paper storage device can be pushed out quickly, and continuous production is guaranteed.
4. The paper tail folding device realizes the folding of the paper tail through the two-shaft driving system, does not fold the paper tail inwards, has simple paper folding process and high paper folding efficiency, does not need to add a bending mechanism, and has simple integral structure.
Drawings
FIG. 1 is a schematic plan view of a removable facial tissue production line according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a paper storage device and a tail folding device of the extraction-type facial tissue production line shown in FIG. 1;
FIG. 3 is a schematic side view of the paper storage device and the tail folding device shown in FIG. 2;
FIG. 4 is an enlarged view of the extraction tissue production line E of FIG. 2;
FIG. 5 is an enlarged view of the extraction tissue production line shown in FIG. 2 at F;
FIG. 6 is a schematic top view of the paper storage and tail folding apparatus shown in FIG. 2;
FIG. 7 is an enlarged view of the drawing tissue production line G of FIG. 6;
FIG. 8 is a schematic side view of the tail folding device of the extraction tissue production line shown in FIG. 1;
FIG. 9 is a schematic view of the structure of the paper stack before the paper is folded;
FIG. 10 is a schematic view of the structure of the stack after folding the sheets of paper in accordance with the present invention;
FIG. 11 is a schematic view of the production process of the extraction type facial tissue production line of the present invention;
fig. 12 is a simplified schematic diagram of the operation of the tail folding device of the present invention.
Reference numerals in FIGS. 1 to 12: 1-a folding device; 2-a conveying device; 3-a paper storage device; 4-tail folding device; 5-a paper cutting device; 6-a packaging device; 7-a paper blocking device; 8-stacking paper; 9-paper; 21-a third drive member; 22-a conveyor belt; 31-a frame; 32-a paper storage mechanism; 33-a push-in mechanism; 34-a push-out mechanism; 35-a fence; 41-a pressing plate; 42-a Z-axis mechanism for adjusting the lifting of the pressure plate; 43-a vacuum generating mechanism; 44-a Y-axis mechanism is adjusted forwards and backwards by the pressure plate; 71-a paper blocking plate; 311-main frame; 312-a subframe; 321-a fourth drive; 322-a transmission mechanism; 323-paper storage rack; 331-a sixth driving member; 332-push-in plate; 341-fifth driving member; 342-a paper pushing beam; 343-a push-out plate; 411-suction hole; 421-a second driving member; 431-a vacuum generator; 432-a pipe; 441-a first driving member; 442-a connecting plate; 443-a slider; 444-guide rail; 3221-drive train set; 3221A-a first drive train set; 3221B-a second drive train set; 3231-counterweight bar; 3232-L-shaped cardboard; 3233-connecting block; 3234-connection point; 4321-straight tube; 4322-connecting bent pipe; 3221 a-a drive sprocket; 3221 b-a drive chain.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1-12 schematically illustrate an extraction tissue production line according to one embodiment of the present invention.
As shown in fig. 1 to 12, the extraction type facial tissue production line includes a folding device 1, a paper cutting device 5, a paper storage device 3, a tail folding device 4 and a packaging device 6. The paper tail folding device 4 is arranged on the paper storage device 3, and the paper tail folding device 4 is matched with the paper storage device 3. The folding device 1, the tail folding device 4, the paper cutting device 5 and the packaging device 6 are connected in sequence through the conveying device 2. The paper storage device 3 includes a frame 31, and a paper storage mechanism 32, a push-in mechanism 33, and a push-out mechanism 34 provided to the frame 31. The conveying device 2 and the tail folding device 4 are located on one side of the paper storage mechanism 32, and the tail folding device 4 is located above the conveying device 2 on which the sheet pile 8 conveyed from the folding device 1 is placed. The push-in mechanism 33 and the push-out mechanism 34 are respectively located on both sides of the sheet stack 8.
The tail folding device 4 is configured to fold the topmost sheet 9 of the stack 8.
The pushing mechanism 33 is configured to push the sheet bundle 8 folded by the tail folding device 4 to the sheet storage mechanism 32.
The push-out mechanism 34 is configured to push the sheet bundle 8 stored in the sheet storage mechanism 32 to the conveying device 2.
The conveying device 2 is configured to convey the sheet bundle 8 folded by the tail folding device 4 or the sheet bundle 8 pushed by the pushing mechanism 34 to the sheet cutting device 5.
The packing device 6 is configured to pack the sheet bundle 8 cut by the cutting device 5.
The folding device 1, the paper cutting device 5 and the packaging device 6 of the embodiment are common machines in the production process of the existing tissues, for example, the folding device 1 can be a folding machine, the paper cutting device 5 can be a large-circle paper cutting machine, and the packaging device 6 can be an automatic soft tissue extraction packaging machine.
As shown in fig. 3, the frame 31 of the present embodiment includes a main frame 311 and a sub-frame 312, and the sub-frame 312 is fixed to one side of the main frame 311 by a fastener such as a screw. The paper storage mechanism 32 and the push-out mechanism 34 are attached to the main frame 311. The tail folding device 4, the conveying device 2, and the pushing mechanism 33 are mounted on the sub-frame 312.
As shown in fig. 2 to 4, the paper storage mechanism 32 of the present embodiment includes a fourth driver 321, a transmission mechanism 322, and a paper storage shelf 323. The transmission mechanism 322 includes transmission chain groups 3221 symmetrically disposed on two sides of the frame 31. Drive chain group 3221 includes drive sprocket 3221a and drive chain 3221b mounted on drive sprocket 3221 a. As shown in fig. 6, the fourth driving member 321 is fixedly disposed on one side of the main frame 311 for implementing power input and driving one of the driving sprockets 3221a to rotate. The fourth driving member 321 may be a motor. The paper storage rack 323 is used for placing the paper stack 8, and two ends of the paper storage rack are respectively connected with the transmission chains 3221b at two sides and move along with the transmission chains 3221 b. The number of the paper storage frames 323 is at least one, and the number of the paper storage frames 323 can be set according to actual needs, and the larger the number is, the larger the storage amount is. Each paper storage rack 323 comprises a weight bar 3231 and at least two side-by-side L-shaped paper supporting plates 3232, a gap is reserved between every two adjacent L-shaped paper supporting plates 3232, and the L-shaped paper supporting plates 3232 are sleeved on the weight bar 3231. The two ends of the counterweight strip 3231 are respectively provided with a connecting block 3233, the upper part of the connecting block 3233 is provided with a connecting point 3234 connected with the transmission chain 3221b, and the paper support is connected to the transmission chain 3221b through the connecting point 3234 and can swing around the connecting point 3234.
As shown in fig. 3, the drive chain group 3221 of the present embodiment includes a first drive sprocket group 3221A and a second drive sprocket group 3221B provided on the same side of the main frame 311. A drive chain 3221B is mounted around the first drive sprocket set 3221A and the second drive sprocket set 3221B. The main frame 311 of the present embodiment has a rectangular frame-like structure, and the first transmission sprocket group 3221A includes four transmission sprockets 3221A and is attached to four corners of the main frame 311, respectively. The second driving sprocket set 3221B includes at least one set of driving sprockets 3221a arranged up and down, and in this embodiment, there are two sets, and there are four driving sprockets 3221 a. The four drive sprockets 3221A of the second drive sprocket set 3221B are located between the four drive sprockets 3221A of the first drive sprocket set 3221A. A drive chain 3221b between two sprockets of the first drive sprocket set 3221A close to the tail folding device 4 can pass between the pushing-out mechanism 34 and the conveying device 2.
As shown in fig. 3 and 6 to 7, the push-out mechanism 34 of the present embodiment includes a fifth driving member 341 and a paper-pushing beam 342. The paper pushing beam 342 is at least provided with two side-by-side pushing plates 343, and one end of the pushing plate 343 is fixed to the paper pushing beam 342 by means of screws or welding. A gap is left between the two push-out plates 343, and the arrangement positions of the push-out plates 343 are staggered with the arrangement positions of the L-shaped paper supporting plates 3232 of the paper storage rack 323. One end of the fifth driving member 341 is connected to the paper pushing beam 342. Under the driving of the fifth driving member 341, the other end of the pushing plate 343 can pass through the gap between the L-shaped paper supporting plates 3232 of the paper storage rack 323 to push the paper stack 8 on the L-shaped paper supporting plates 3232 to the conveying device 2. The fifth driving member 341 may be a conventional driving member such as an air cylinder, a linear servo motor, or the like.
The conveyor 2 of the present embodiment includes a plurality of third driving members 21 and a plurality of conveyor belts 22. The third driving members 21 and the conveyor belts 22 are respectively installed between the devices correspondingly for realizing the transmission of the products before the devices. The third driving member 21 and the conveying belt 22 at the tail folding device 4 are mounted to the sub-frame 312. The third driving member 21 is used for driving the conveyer belt 22 to rotate, and the third driving member 21 may be a motor. The transport device 2 located at the tail folding device 4 can thus receive the stack 8 of sheets produced by the folding device 1 and at the same time transport the stack 8 of sheets half-folded or the stack 8 of sheets pushed out from the push-out mechanism 34 to the cutting device 5.
As shown in fig. 2, 5, and 8 to 10, the tail folding device 4 of the present embodiment includes a platen 41, a platen elevation adjustment Z-axis mechanism 42, a vacuum generation mechanism 43, and a platen front-rear adjustment Y-axis mechanism 44. The press plate front-back adjusting Y-axis mechanism 44 is installed on the frame 31, the press plate lifting adjusting Z-axis mechanism 42 is installed on the press plate front-back adjusting Y-axis mechanism 44, and the press plate 41 is installed on the press plate lifting adjusting Z-axis mechanism 42 and is positioned above the paper stack 8 on the conveying device 2. The vacuum generating mechanism 43 is attached to the platen 41. The pressing plate 41 is provided with a plurality of suction holes 411 which are arranged along the length direction of the pressing plate 41 and connected with the vacuum generating mechanism 43. The vacuum generating mechanism 43 is engaged with the suction hole 411 of the pressing plate 41, so that the suction hole 411 sucks or releases the topmost sheet 9 of the sheet stack 8. The suction hole 411 is located at the end of the topmost sheet 9 of the stack 8 near the tail. Thus, it is ensured that the tail of the topmost sheet 9 of the stack 8 does not sag during the movement of the platen 41.
The platen back-and-forth adjustment Y-axis mechanism 44 is used to drive the platen 41 back and forth. The platen back-and-forth adjustment Y-axis mechanism 44 of the present embodiment includes a first driving member 441, a connecting plate 442, a slider 443, and a guide rail 444. The platen elevation adjustment Z-axis mechanism 42 is mounted on the connection plate 442, and the first driving member 441 is mounted on the frame 31 and has a driving end fixedly connected to the connection plate 442. The first driving member 441 may be a conventional driving member such as an air cylinder, a linear servo motor, or the like. The guide rail 444 is fixedly installed on the frame 31, the sliding block 443 is installed at the bottom of the connecting plate 442 and sleeved on the guide rail 444, and the sliding block 443 is slidably engaged with the guide rail 444. The connecting plate 442 of the present embodiment is a long strip-shaped tubular structure and is disposed laterally along the length direction of the sheet stack 8. Two pressing plate front-rear adjusting Y-axis mechanisms 44 are respectively arranged at two ends of the connecting plate 442. Thus, the platen fore-aft adjustment Y-axis mechanism 44 operates on the following principle: the first driving rack drives the connecting plate 442 to extend and retract along the Y-axis direction, and the slider 443 at the bottom of the connecting plate 442 slides along the guide rail 444, thereby driving the pressing plate 41 mounted on the pressing plate elevation adjustment Z-axis mechanism 42 and the pressing plate elevation adjustment Z-axis mechanism 42 to extend and retract along the Y-axis direction, and completing the front-back feeding of the pressing plate 41.
The platen elevation adjustment Z-axis mechanism 42 is used for driving the platen 41 to ascend and descend. The platen elevation adjustment Z-axis mechanism 42 of the present embodiment includes a second driving member 421. The second driving member 421 is installed on the connection plate 442 and has one end connected to the pressing plate through the vacuum generating mechanism 43. The first driving member 441 may be a conventional driving member such as an air cylinder, a linear servo motor, or the like. Therefore, the working principle of the platen elevation adjustment Z-axis mechanism 42 is as follows: the second driving member 421 drives the vacuum generating mechanism 43 and the pressing plate 41 to extend and contract along the Z-axis, so as to complete the lifting adjustment of the pressing plate 41.
The vacuum generating mechanism 43 of the present embodiment includes a plurality of vacuum generators 431, and the plurality of vacuum generators 431 are attached to the pressure plate 41 and distributed along the longitudinal direction of the pressure plate 41. One end of the vacuum generator 431 is connected to the suction hole 411 of the pressing plate 41, and the other end is connected to the pressing plate elevation adjustment Z-axis mechanism 42. The number of the vacuum generators 431 corresponds to the number of the suction holes 411. The plurality of vacuum generators 431 are connected by a pipe 432, and one end of the pipe 432 is externally connected with compressed air. The conduit 432 of this embodiment includes a straight tube 4321 and a plurality of connecting bent tubes 4322. One end of the connection bent pipe 4322 communicates with the vacuum generator 431, and the other end communicates with the straight pipe 4321. One end of the straight tube 4321 is externally connected with compressed air. The number of connection elbows 4322 is the same as the number of vacuum generators 431. The vacuum generator 431 of the present embodiment may be a commercially available vacuum generator 431 having a built-in solenoid valve. The air supply of the vacuum generator 431 is controlled by a built-in solenoid valve, which is driven when energized, and compressed air flows to the suction hole 411 through a pipe 432, generating a vacuum at the suction hole 411 according to the jet principle. When the electromagnetic valve is powered off, the air suction is stopped. Therefore, the vacuum generating mechanism 43 of the present embodiment utilizes the jet flow principle, and the external compressed air passes through the vacuum generator 431, so that the suction hole 411 generates vacuum, and then the paper 9 at the top end of the paper stack 8 is adsorbed on the pressure plate 41, thereby facilitating the subsequent folding work. The vacuum generating mechanism 43 of the invention does not contain a motor, saves equipment, and has small integral volume and small occupied space; meanwhile, the failure rate of the system is reduced, and the production efficiency is improved.
As shown in fig. 2 and 5, the pushing mechanism 33 of the present embodiment includes a sixth driving member 331 and a pushing plate 332. The sixth driving member 331 is mounted on the sub-frame 312 and has one end connected to the pushing plate 332 through the sub-frame 312 for driving the pushing plate 332 to extend and retract. The sixth driving member 331 may be a conventional driving member such as an air cylinder, a linear servo motor, etc. The push-in plate 332 is located on the side of the conveyor belt 22 remote from the paper storage 3 and below the side of the press plate.
The extraction-type facial tissue production line of the present embodiment further includes a paper blocking device 7, and the paper blocking device 7 is installed on the sub-frame 312 and located on both sides of the conveyor belt 22 at the tail folding device 4. As shown in fig. 4, the two sheet stoppers 7 of the present embodiment are provided, and are respectively located on the upper and lower sides of the pressing plate of the tail folding device 4. The sheet stop 7 is used to guide and collate the sheet bundle 8 conveyed from the folding device 1 or the sheet bundle 8 conveyed from the conveying device 2. The paper blocking device 7 of the present embodiment includes a paper blocking plate 71. The paper blocking plates 71 are mounted to the sub-frame 312 by fasteners such as screws and are located on both sides of the conveyor belt 22. Therefore, the paper blocking plates 71 of the paper blocking device 7 are arranged on two sides of the conveying device 2, so that the paper stack 8 conveyed from the folding device 1 or the paper stack 8 output from the conveying device 2 can be guided and arranged, the paper stack 8 is prevented from being inclined, and the regularity of the paper stack 8 in conveying work is ensured.
The paper storage device 3 of the present embodiment further includes a fence 35. To ensure safety, a fence 35 may be provided around the outer periphery of the paper storage shelf 323 of the paper storage device 3.
The extraction type facial tissue production line of the embodiment further comprises a controller. The controller is electrically connected to the third driving member 21 of the conveying device 2, the second driving member 421 of the platen elevation adjustment Z-axis mechanism 42, the vacuum generator 431 of the vacuum generating mechanism 43, the first driving member 441 of the platen fore-and-aft adjustment Y-axis mechanism 44, the fourth driving member 321 of the paper storage device 3, the sixth driving member 331 of the push-in mechanism 33, the fifth driving member 341 of the push-out mechanism 34, the packing device 6, the paper cutting device 5, the folding device 1, and the like. The Controller may be a commercially available single chip microcomputer, a Programmable Logic Controller (PLC), or other mature control components.
Fig. 11 schematically shows a production process of an extraction tissue production line according to an embodiment of the present invention.
As shown in fig. 11, the production process of the extraction type facial tissue production line of the present embodiment includes the following steps:
s1, processing the raw paper of the paper 9 by the folding device 1 to obtain a paper stack 8;
s2, conveying the paper stack 8 to the lower part of a pressing plate of the paper tail folding device 4 through the conveying device 2;
s3, the paper tail folding device 4 starts to work, and the paper 9 at the top end of the paper stack 8 below the pressing plate 41 is folded;
s4, when the paper cutting device 5 is busy, fails or stops, the pushing mechanism 33 starts to work, and pushes the paper stack 8 folded by the paper tail folding device 4 to the paper storage rack 323 of the paper storage mechanism 32 for storage;
s5, when the paper cutting device 5 works normally, the paper stack 8 folded by the paper tail folding device 4 is directly conveyed to the paper cutting device 5 through the conveying device 2 without being pushed to the paper storage rack 323 through the pushing mechanism 33 for storage;
s6, when the folding device 1 is out of order or stopped, the pushing mechanism 34 starts to operate, and pushes the sheet pile 8 stored in the sheet storage shelf 323 to the conveying device 2, and the sheet pile is conveyed to the paper cutting device 5 through the conveying device 2;
s7, the paper cutting device 5 works to cut the paper stack 8 conveyed by the conveying device 2 to obtain a paper stack block;
s8, the wrapping device 6 operates to wrap the sheet bundle 8 fed from the sheet cutting device 5 to obtain a finished product.
According to the production process, when the folding device 1 and the paper cutting device 5 work normally, after the paper stack 8 conveyed from the folding device 1 is processed by the tail paper folding device 4, the paper stack is immediately conveyed to the paper cutting device 5 by the conveying belt 22 of the conveying device 2, and the process is repeated;
when the folding device 1 is normal and the paper cutting device 5 is in failure or is stopped, after the stack 8 conveyed from the folding device 1 is processed by the tail folding device 4, one empty paper storage frame 323 of the paper storage mechanism 32 reaches a specified position under the transmission of the transmission mechanism 322 to wait, the pushing mechanism 33 starts to work, the stack 8 is pushed onto the paper storage frame 323 from the conveying belt 22, the pushing mechanism 33 is reset, the tail folding device 4 continues to process, after the processing is finished, a new paper storage frame 323 reaches the specified position under the transmission of the transmission mechanism 322 to wait, the pushing mechanism 33 starts to work, the stack 8 is pushed onto the paper storage frame 323 from the conveying belt 22, and the process is repeated until all the paper storage frames 323 are fully loaded.
When the paper cutting device 5 is normal, failed or stopped, whether the paper stack 8 exists on the paper storage frame 323 is detected, if so, the pushing mechanism 34 starts to work, cooperates with the transmission mechanism 322 to push the paper stack 8 stored on the paper storage frame 323 to the conveying belt 22, and conveys the paper stack 8 to the paper cutting device 5 for cutting through the conveying belt 22, and the paper cutting device stops when detecting that the paper storage frame 323 does not have the paper stack 8. Of course, if the folding device 1 returns to normal halfway and the stack 8 remains on the storage shelf 323, the pushing mechanism 34 stops operating and the processed stack 8 of sheets in the tail folding device 4 is directly transferred to the sheet cutting device 5.
As shown in fig. 12, the detailed operation of the tail folding device 4 in step S3 is shown, and A, B, C, D four dots in the figure indicate the positions of the suction holes 411 on the pressing plate 41. Where point C is the initial position of the suction hole 411.
As shown in fig. 12, the specific operation process of the tail folding device 4 of the present embodiment includes the following steps:
s301, conveying the paper stack 8 to a designated position of a conveying mechanism from the folding device 1 under the action of the conveying belt 22, and stopping the operation of the conveying belt 22;
s302, as shown in a of fig. 12, the pressing plate 41 at the initial position moves forward (the suction hole 411 reaches point B) and then moves downward to press the paper stack 8 under the action of the first driving element 441 of the pressing plate forward and backward adjustment Y-axis mechanism 44 and the second driving element 421 of the pressing plate lifting adjustment Z-axis mechanism 42, so that the suction hole 411 on the pressing plate 41 contacts with one end of the topmost paper 9 of the paper stack 8 near the tail (the suction hole 411 reaches point a);
s303, the vacuum generator 431 starts to work to suck air, and under the action of the suction hole 411, the tail of the topmost paper 9 of the paper stack 8 is adsorbed on the lower surface of the pressing plate 41;
s304, as shown in B of fig. 12, the pressing plate 41 moves upward (the suction hole 411 reaches point B), moves backward again to the initial position (the suction hole 411 reaches point C), and presses downward on the paper stack 8 (the suction hole 411 reaches point D) under the action of the first driving element 441 of the pressing plate forward and backward adjustment Y-axis mechanism 44 and the second driving element 421 of the pressing plate lifting adjustment Z-axis mechanism 42, so that the tail of the topmost paper 9 of the paper stack 8 is folded;
s305, as shown in C of fig. 12, the vacuum generator 431 stops working, deflates, separates the topmost sheet 9 of the sheet stack 8 from the suction hole 411 of the pressing plate 41, and the pressing plate 41 moves upward to return to the initial position (the suction hole 411 reaches point C) under the action of the second driving member 421 of the Z-axis lifting adjustment mechanism 42;
s306, the third driving piece 21 drives the conveying belt 22 to work, and the paper stack 8 is conveyed to the next process;
and S307, repeating the steps S301 to S306.
Therefore, the tail folding device 4 of the invention provides a brand-new paper folding method, the suction position of the suction hole 411 is one end of the topmost paper 9 of the paper stack 8 close to the tail, the tail of the topmost paper 9 of the paper stack 8 can be ensured not to droop in the moving process of the pressing plate 41, the pressing plate 41 moves under the driving of a two-axis driving system of the pressing plate front-back adjusting Y-axis mechanism 44 and the pressing plate lifting adjusting Z-axis mechanism 42, and finally the tail of the topmost paper 9 is pressed downwards to be in a Z shape. The paper folding method of the invention is not to fold the paper tail inwards, but to directly lift the paper 9 from the paper tail and then press the paper tail downwards to form the Z-shaped paper folding (as shown in figure 10), the whole paper folding process is simple, the paper folding efficiency is high, no additional bending mechanism is needed, and the whole structure is simple.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The extraction type facial tissue production line comprises a folding device (1) and a paper cutting device (5), and is characterized by further comprising a paper storage device (3) and a paper tail folding device (4), wherein the paper tail folding device (4) is installed on the paper storage device (3), the paper tail folding device (4) is matched with the paper storage device (3), the folding device (1), the paper tail folding device (4) and the paper cutting device (5) are sequentially connected through a conveying device (2), the paper storage device (3) comprises a rack (31), a paper storage mechanism (32), a pushing mechanism (33) and a pushing mechanism (34) which are arranged on the rack (31), the conveying device (2) and the paper tail folding device (4) are located on one side of the paper storage mechanism (32), the paper tail folding device (4) is located above the conveying device (2) where a paper stack (8) conveyed from the folding device (1) is placed, the pushing mechanism (33) and the pushing mechanism (34) are respectively positioned at two sides of the paper stack (8);
the tail folding device (4) is configured to fold the topmost sheet (9) of the stack (8);
the pushing mechanism (33) is configured to push the paper stack (8) after the paper tail folding device (4) is folded to the paper storage mechanism (32);
the push-out mechanism (34) is configured to push the paper stack (8) stored in the paper storage mechanism (32) to the conveying device (2);
the conveying device (2) is configured to convey the paper stack (8) which is folded by the paper tail folding device (4) or the paper stack (8) which is pushed by the pushing-out mechanism (34) to the paper cutting device (5);
the paper storage mechanism (32) comprises a fourth driving part (321), a transmission mechanism (322) and a paper storage rack (323), the transmission mechanism (322) comprises transmission chain groups (3221) symmetrically arranged on two sides of the rack (31) respectively, each transmission chain group (3221) comprises a transmission chain wheel (3221a) and a transmission chain (3221b) arranged on the transmission chain wheel (3221a), the paper storage rack (323) is used for placing paper stacks (8), two ends of the paper storage rack are connected with the transmission chains (3221b) on the two sides respectively, the paper storage rack (323) moves along with the transmission chains (3221b), at least one paper storage rack (323) is provided, the paper storage rack (323) comprises a counterweight strip (3231) and at least two L-shaped paper supporting plates (3232) which are arranged side by side, a gap is reserved between the two adjacent L-shaped paper supporting plates (3232), the L-shaped paper supporting plates (3232) are arranged on the counterweight strip (3231), two ends of the counterweight strip (3231) are hinged to the transmission chains (3221b) on the two sides, the transmission chain group (3221) comprises a first transmission chain wheel group (3221A) and a second transmission chain wheel group (3221B) which are arranged on the same side of the rack (31), the drive chain (3221B) is mounted around the first drive sprocket set (3221A) and the second drive sprocket set (3221B), the first transmission chain wheel group (3221A) comprises four transmission chain wheels (3221A) which are respectively positioned at four corners of the frame (31), the second driving chain wheel group (3221B) at least comprises a group of driving chain wheels (3221a) arranged up and down, the transmission chain wheel (3221A) of the second transmission chain wheel group (3221B) is positioned between the four transmission chain wheels (3221A) of the first transmission chain wheel group (3221A), and a transmission chain (3221B) between the two transmission chain wheels (3221A) of the first transmission chain wheel group (3221A) close to the tail paper folding device (4) can penetrate through the space between the pushing-out mechanism (34) and the conveying device (2);
the pushing mechanism (34) comprises a fifth driving piece (341) and a paper pushing cross beam (342), at least two pushing plates (343) which are arranged side by side are arranged on the paper pushing cross beam (342), a gap is reserved between the two pushing plates (343) which are arranged side by side, the arrangement positions of the pushing plates (343) are staggered with the arrangement positions of the L-shaped paper supporting plates (3232) of the paper storage rack (323), and the pushing plates (343) can penetrate through the gap between the L-shaped paper supporting plates (3232) of the paper storage rack (323) under the driving of the fifth driving piece (341) to push the paper stack (8) on the L-shaped paper supporting plates (3232) to the conveying device (2).
2. The extraction type facial tissue production line according to claim 1, characterized in that the tail folding device (4) comprises a pressing plate (41), a pressing plate lifting and adjusting Z-axis mechanism (42), a vacuum generating mechanism (43) and a pressing plate front and back adjusting Y-axis mechanism (44), the pressing plate front and back adjusting Y-axis mechanism (44) is installed on the frame (31), the pressing plate (41) lifting and adjusting Z-axis mechanism (42) is installed on the pressing plate front and back adjusting Y-axis mechanism (44), the pressing plate (41) is installed on the pressing plate lifting and adjusting Z-axis mechanism (42) and is positioned above the paper stack (8) on the conveying device (2), the vacuum generating mechanism (43) is installed on the pressing plate (41), the pressing plate (41) is provided with a plurality of suction holes (411) connected with the vacuum generating mechanism (43), and the vacuum generating mechanism (43) is matched with the suction holes (411) on the pressing plate (41), the paper stack can enable the suction holes (411) to suck or loosen the topmost paper (9) of the paper stack (8), and the suction positions of the suction holes (411) are the ends, close to the tail, of the topmost paper (9) of the paper stack (8).
3. The extraction tissue production line of claim 2 wherein the platen fore-aft adjustment Y-axis mechanism (44) includes a first drive member (441), a connecting plate (442), a slider (443), and a guide rail (444), the pressing plate lifting adjusting Z-axis mechanism (42) is arranged on the connecting plate (442), the first driving piece (441) is arranged on the frame (31) and one end of the first driving piece is connected with the connecting plate (442), the guide rail (444) is fixedly arranged on the frame (31), the sliding block (443) is arranged at the bottom of the connecting plate (442) and sleeved on the guide rail (444), the sliding block (443) is in sliding fit with the guide rail (444), the pressure plate lifting adjusting Z-axis mechanism (42) comprises a second driving piece (421), the second driving piece (421) is installed on the connecting plate (442) and one end of the second driving piece is connected with the pressing plate (41) through the vacuum generating mechanism (43).
4. The extraction type facial tissue production line according to claim 2, characterized in that the vacuum generator (43) comprises a plurality of vacuum generators (431), the vacuum generators (431) are arranged on the pressing plate and distributed along the length direction of the pressing plate (41), one end of each vacuum generator (431) is connected with the suction hole (411) of the pressing plate (41), the other end of each vacuum generator is connected with the Z-axis lifting adjusting mechanism (42), the vacuum generators (431) are connected through a pipeline (432), and one end of the pipeline (432) is externally connected with compressed air.
5. The extraction-type facial tissue production line according to claim 2, characterized in that the pushing mechanism (33) comprises a sixth driving member (331) and a pushing plate (332), the sixth driving member (331) is mounted on the frame (31) and has one end connected with the pushing plate (332) for driving the pushing plate (332) to extend and retract, and the pushing plate (332) is located on the side of the paper stack (8) on the conveying device (2) far away from the paper storage device (3) and below the pressing plate (41).
6. Extraction tissue production line according to claim 1, characterized in that it further comprises a packaging device (6), said packaging device (6) being located behind the cutting device (5) and connected to the cutting device (5) by means of the transport device (2), said packaging device (6) being configured to package the stack (8) pieces cut by the cutting device (5).
7. The production process of the removable facial tissue production line as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
s1, processing the base paper of the paper (9) by the folding device (1) to obtain a paper stack (8);
s2, conveying the paper stack (8) to the lower part of a pressing plate (41) of the paper tail folding device (4) through the conveying device (2);
s3, the paper tail folding device (4) starts to work, and the paper (9) at the topmost end of the paper stack (8) below the pressing plate is folded;
s4, when the paper cutting device (5) is busy, fails or stops, the pushing mechanism (33) starts to work, and the paper stack (8) folded by the paper tail folding device (4) is pushed to the paper storage rack (323) of the paper storage mechanism (32) for storage;
s5, when the paper cutting device (5) works normally, the paper stack (8) after being folded by the paper tail folding device (4) is directly conveyed to the paper cutting device (5) through the conveying device (2) without being pushed to the paper storage rack (323) through the pushing mechanism (33) for storage;
s6, when the folding device (1) is in failure or is stopped, the pushing mechanism (34) starts to work, the paper stack (8) stored on the paper storage rack (323) is pushed to the conveying device (2) and conveyed to the paper cutting device (5) through the conveying device (2);
s7, the paper cutting device (5) works, and the paper stack (8) conveyed by the conveying device (2) is cut to obtain a paper stack (8) block;
s8, the packaging device (6) works to package the paper pile (8) blocks conveyed from the paper cutting device (5) to obtain finished products.
8. The production process according to claim 7, characterized in that in step S3, the operation of the tail folding device (4) comprises the following steps:
s301, conveying the paper stack (8) to the position below the pressing plate (41) from the folding device (1) under the action of the conveying device (2), and stopping the operation of the conveying device (2);
s302, the pressing plate (41) located at the initial position moves forwards firstly and then moves downwards to press the paper stack (8) under the action of a first driving piece (441) of the Y-axis mechanism (44) for forward and backward adjustment of the pressing plate and a second driving piece (421) of the Z-axis mechanism (42) for lifting and adjusting of the pressing plate, so that a suction hole (411) in the pressing plate (41) is in contact with one end, close to the tail, of the paper (9) at the topmost end of the paper stack (8);
s303, the vacuum generator (431) starts to work, air is sucked, and under the action of the suction hole (411), the tail of the topmost paper (9) of the paper stack (8) is adsorbed on the lower surface of the pressing plate (41);
s304, the pressing plate moves upwards firstly, then moves backwards to return to the initial position under the action of a first driving piece (441) of the pressing plate front-back adjusting Y-axis mechanism (44) and a second driving piece (421) of the pressing plate lifting adjusting Z-axis mechanism (42), and finally presses downwards on the paper stack (8), and the paper tail of the paper (9) at the top end of the paper stack (8) is folded;
s305, stopping working of the vacuum generator (431), deflating, separating the paper (9) at the top end of the paper stack (8) from the suction hole (411) on the pressing plate (41), and enabling the pressing plate (41) to move upwards to return to the initial position under the action of a second driving piece (421) of the Z-axis lifting adjusting mechanism (42) of the pressing plate;
s306, the conveying device (2) works to convey the paper stack (8) to the next process;
and S307, repeating the steps S301 to S306.
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