Full-automatic production equipment for internally-separated and stacked napkins

Abstract

The invention belongs to the technical field of napkin production equipment, and discloses full-automatic production equipment for internally-separated and stacked napkins, which comprises a feeding frame, a first rack and a second rack, and a printing device, a slitting device and a folding device which are sequentially arranged along the X-axis direction are mounted on the first rack; a cutting device, a folding device and a discharging device are mounted on the second rack; the cutting device comprises a paper feeding air suction roller, a lower cutting roller, a paper discharging air suction roller and an upper cutting roller, and the upper cutting roller is connected with a cutter lifting assembly; the folding device comprises a folding assembly and a paper blocking assembly. The discharging device comprises a material receiving assembly, a middle bearing assembly and a feeding assembly. The conveying tail end of the feeding assembly is connected with a two-way discharging conveyor. According to the napkin post-processing and packaging device, integrated configuration of the whole post-processing procedure is achieved, full-automatic operation of napkin post-processing and packaging procedures is achieved, manual participation is not needed, the napkin processing efficiency is greatly improved, and the product quality and safety of napkins are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of napkin production equipment, in particular to a fully automatic production equipment for inner-folding napkins. Background Art

[0002] As an everyday consumer product, napkins require a balanced approach to production processes and procedures, emphasizing efficiency, quality, and cost control. The production process can be divided into raw material pretreatment, pulping and conditioning, papermaking, and post-processing and packaging. Post-processing and packaging primarily includes printing, slitting, folding, cutting, folding, discharging, and packaging.

[0003] In the Chinese invention patent application number 202323516332.9, a paper towel production embossing and folding machine is proposed. This patent realizes the automatic embossing, folding and splitting of paper towels. The main problem with this patent is that it can only fold paper towels into shapes, while general napkins need to be folded in half after being cut into blocks. This patent requires the additional configuration of an independent stacking device to achieve this, which not only slows down the production efficiency of napkins, but also increases the additional equipment purchase cost. Moreover, for traditional stacking equipment, napkins are output in rows, and manual participation is required to stack and package them. This is not only inefficient, but also unhygienic, affecting the product quality and safety of napkins. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide a fully automatic production equipment for internally folded napkins, which realizes the integrated configuration of the entire post-processing process and the fully automated operation of the post-processing and packaging processes of the napkins without the need for human participation, greatly improving the processing efficiency of the napkins and ensuring the product quality and safety of the napkins.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A fully automatic production device for inner-folding napkins, comprising a loading rack, a first rack, and a second rack sequentially arranged along the X-axis direction, wherein paper material passes through the loading rack, the first rack, and the second rack sequentially along the X-axis direction; a loading device is mounted on the loading rack; a printing device, a slitting device, and a folding device sequentially arranged along the X-axis direction are mounted on the first rack; and a cutting device, a folding device, and a discharging device are mounted on the second rack; The cutting device includes a paper feed suction roller, a lower cutting roller and a paper discharge suction roller which are sequentially arranged along the paper material conveying direction. The paper feed suction roller, the lower cutting roller and the paper discharge suction roller are all rotatably mounted on the second frame. The paper material passes over the paper feed suction roller, the lower cutting roller and the paper discharge suction roller in sequence along an S-shaped route. An upper cutting roller which is obliquely arranged is arranged above the lower cutting roller. The upper cutting roller cooperates with the lower cutting roller to perform knife-aligned cutting on the paper material. One end of the upper cutting roller is rotatably mounted on the second frame and is connected to a knife lifting assembly. The folding device includes a folding assembly and a paper stop assembly arranged below the paper discharge suction roller, and the paper stop assembly is arranged on the discharge side of the paper discharge suction roller; The discharging device includes a receiving assembly and a middle supporting assembly arranged below the folding assembly. The discharging position of the receiving assembly is connected with a feeding assembly, and the conveying end of the feeding assembly is connected with a bidirectional discharging conveyor.

[0006] The following is a further optimization of the above technical solution by the present invention: The lower cutting roller is extended along the Y-axis direction, and a plurality of lower cutting knives are fixed on the peripheral wall of the lower cutting roller at equal intervals along the axial direction. An upper cutting knife is fixed at a lower position on the peripheral wall of the upper cutting roller. The upper cutting knife is extended along the axial direction of the upper cutting roller, and the blade of the upper cutting knife is a spirally twisted plate-shaped blade. The shape of the blade of the upper cutting knife is adapted to the cutting path of the lower cutting knife.

[0007] Further optimization: the folding assembly includes a folding roller rotatably mounted on the second frame, the folding roller is arranged below the contact position between the lower cutting roller and the paper discharge suction roller, and a folding gap for folding the napkin in half and allowing the napkin to pass through is formed between the folding roller and the paper discharge suction roller.

[0008] Further optimization: a plurality of shift forks are arranged below the paper discharge suction roller, and all the shift forks are arranged in sequence along the Y-axis direction. A folding shaft is fixed to one end of the shift fork away from the paper discharge suction roller, and the folding shaft is driven to rotate by the reciprocating drive assembly. The folding shaft extends along the Y-axis direction and is rotatably installed on the second frame. A plurality of slots arranged in a ring on the side wall of the paper discharge suction roller are arranged in sequence along the axial direction. The slots and the shift forks are arranged one by one, and the other ends of the shift forks are inserted into the corresponding slots.

[0009] Further optimization: the paper stop assembly includes a plurality of paper stop rods arranged in sequence along the Y-axis direction, the paper stop rods and the shift forks are staggered one by one, each paper stop rod is arranged between two adjacent slots, and the end of the paper stop rod away from the paper output suction roller is commonly fixed with a paper stop beam, which extends along the Y-axis direction and has both ends fixed to the second frame.

[0010] Further optimization: the material receiving assembly includes a material receiving beam slidably installed on the inner side of the second frame along the Z-axis direction, the material receiving beam is driven by the first lifting drive mechanism to move in the Z-axis direction, and the rear side wall of the material receiving beam is fixed with several material receiving claws arranged in sequence along the Y-axis direction, and the material receiving claws are arranged directly below the folding assembly.

[0011] Further optimization: the middle support assembly includes a lifting frame installed in the second frame for sliding along the Z-axis direction, the lifting frame is driven by the second lifting drive mechanism to move in the Z-axis direction, a translation beam is installed on the lifting frame for sliding along the X-axis direction, and a plurality of receiving claws arranged in sequence along the Y-axis direction are fixed on the rear side wall of the translation beam, the receiving claws are arranged in front of the material receiving claws, and all the receiving claws and the material receiving claws are staggered.

[0012] Further optimization: a fourth drive motor is fixedly installed at the front end of the lifting frame, and a second crank arm and a second rocker arm are commonly provided between the fourth drive motor and the translation beam, one end of the second crank arm is fixedly connected to the motor shaft of the fourth drive motor, and the other end of the second crank arm is hingedly installed together with one end of the second rocker arm, and the other end of the second rocker arm is hingedly installed on the translation beam.

[0013] Further optimization: the knife lifting assembly includes a knife lifting cylinder arranged on the outside of the second frame, the cylinder body of the knife lifting cylinder is hingedly mounted on the outer wall of the second frame, and a knife lifting arm is arranged between the piston rod of the knife lifting cylinder and the shaft rod of the upper cutting roller. One end of the knife lifting arm is fixedly mounted on the shaft rod of the upper cutting roller, and the other end of the knife lifting arm is hingedly connected to the piston rod of the knife lifting cylinder.

[0014] Further optimization: the reciprocating drive assembly includes a driving gear and a driven gear that mesh with each other, the driving gear is fixedly mounted on the shaft of the paper discharge suction roller, and the driven gear is rotatably mounted on the outer wall of the second frame, and an eccentric wheel is fixedly mounted on the mounting shaft of the driven gear. A first crank arm and a first rocker arm are arranged between the folding shaft and the eccentric wheel, one end of the first crank arm is rotatably connected to the eccentric wheel, the other end of the first crank arm is hingedly connected to the first rocker arm, and the other end of the first rocker arm is fixedly connected to the folding shaft.

[0015] The present invention adopts the above technical solution and has the following beneficial effects: the present invention has a built-in napkin folding device, realizing an integrated and unified configuration of all napkin post-processing processes, without the need to add additional equipment for folding the napkins, so that the entire napkin post-processing process can be completed in the equipment. Fully automated production operations without manual participation are not required, which not only solves the problem of slowing down production efficiency due to excessive manual participation, realizes efficient and high-quality production of napkins, reduces the manpower and equipment cost investment in the entire production process, but also avoids the problem of human participation affecting the product quality and safety of napkins. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 Schematic diagram of the structure of the second rack in an embodiment of the present invention; Figure 3 for Figure 2 The main schematic diagram of Figure 4 for Figure 3 Schematic diagram of the rear view; Figure 5 for Figure 4 Schematic top view of Figure 6 for Figure 5 Schematic cross-sectional view along the AA direction; Figure 7 Schematic diagram of the cooperation between the folding device and the paper discharge suction roller in an embodiment of the present invention; Figure 8 for Figure 7 Schematic diagram from above; Figure 9 Schematic diagram of the structure of the discharging device in an embodiment of the present invention; Figure 10 Schematic diagram of the cooperation between the upper cutting roller and the lower cutting roller in an embodiment of the present invention; Figure 11 Schematic diagram of the structure of the lower cutting roller in an embodiment of the present invention; Figure 12 This is a structural diagram of a loading rack in an embodiment of the present invention; Figure 13 for Figure 12 Schematic diagram from above; Figure 14 for Figure 13 Schematic cross-sectional view along the BB direction; Figure 15 Schematic diagram of the structure of the first rack in an embodiment of the present invention; Figure 16 for Figure 15 The main schematic diagram of Figure 17 for Figure 16 Schematic cross-sectional view in the CC direction; Figure 18Schematic diagram of the structure of the printing device in an embodiment of the present invention; Figure 19 for Figure 18 The main schematic diagram of Figure 20 Schematic diagram of the structure of the slitting device and the folding device in an embodiment of the present invention.

[0018] In the figure: 1. Loading rack; 101. Round paper roller; 102. Support shaft; 103. Limit block; 104. Support roller; 2. First frame; 201. First drive motor; 202. Sixth drive motor; 203. First transmission shaft; 204. Fifth belt transmission assembly; 205. Sixth belt transmission assembly; 206. Third gear transmission assembly; 207. Second transmission shaft; 208. Seventh belt transmission assembly; 209. Eighth belt transmission assembly; 3. Second frame; 301. Reducer; 302. First belt transmission assembly; 303. First gear transmission assembly; 4. Paper feed suction roller; 5. Lower cutting roller; 501. Lower cutter; 6. Paper discharge suction roller; 601. Slot; 7. Upper cutting roller; 701. Upper cutter ;8. Knife lifting assembly;801. Knife lifting cylinder;802. Knife lifting arm;9. Folding assembly;901. Paper folding roller;902. Paper folding gap;903. Fork;904. Folding shaft;10. Paper stop assembly;1001. Paper stop rod;1002. Paper stop beam;11. Reciprocating drive assembly;1101. Driving gear;1102. Driven gear;1103. Eccentric wheel;1104. First crank arm;1105. First rocker arm;1106. Counter;1107. Second belt transmission assembly;12. Material receiving assembly;1201. Material receiving beam;1202. Material receiving claw;1203. Second drive motor;1204. Third belt transmission assembly;13. Middle support assembly;1301. Lifting frame;1302. Flat Shift beam; 1303, receiving claw; 1304, third drive motor; 1305, fourth belt drive assembly; 1306, fourth drive motor; 1307, second crank arm; 1308, second rocker arm; 14, feeding assembly; 1401, feeding rack; 1402, conveyor belt; 15, two-way discharge conveyor; 16, pushing assembly; 1601, truss; 1602, Z-direction oil cylinder; 1603, X-direction oil cylinder; 1604, pushing plate; 17, loading assembly; 1701, loading arm; 1702, first articulated shaft; 1703, loading oil cylinder; 1704, shaft slot; 18, traction assembly; 1801, traction rack; 1802, active roller; 1803, driven roller; 1804, fifth drive motor; 180 5. Second articulated shaft; 1806. Adjusting cylinder; 1807. Sliding seat; 1808. First adjusting screw; 19. First wall panel; 1901. Sliding cavity; 1902. Installing the upper seat; 1903. Installing the lower seat; 20. Upper printing roller; 21. Lower printing roller; 22. Gap adjustment assembly; 2201. Upper wedge block; 2202. Lower wedge block; 2203. Second adjusting screw; 23. Lifting assembly; 2301. Lifting cylinder; 2302. Lifting arm; 2303. Pulling arm; 24. Second wall panel; 25. Slitting assembly; 2501. Slitting shaft; 2502. Slitting roller; 2503. Slitting gap; 26. Slitting knife; 27. Position adjustment seat; 28. Position adjustment assembly; 2801. Third adjusting screw;2802, adjustment handle; 2803, threaded section; 29, folding assembly; 2901, paper guide ramp; 2902, connecting arm; 2903, paper stacking bottom plate; 2904, paper stacking top plate; 2905, connecting frame; 30, pressing assembly; 3001, front pressing roller; 3002, rear pressing roller. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1 like Figures 1-20 As shown together, a fully automatic production equipment for internally stacked napkins includes a loading rack 1, a first rack 2 and a second rack 3 arranged in sequence along the X-axis direction, and paper materials can pass through the loading rack 1, the first rack 2 and the second rack 3 in sequence along the X-axis direction.

[0021] Among them, the loading rack 1 is equipped with a loading device, the first rack 2 is provided with a printing device, a slitting device and a folding device in sequence along the X-axis direction, and the second rack 3 is correspondingly installed with a cutting device, a stacking device and a discharging device.

[0022] The innovative highlights of the present invention are: (1) A creative built-in automatic stacking device specifically for folding napkins saves the cost of purchasing additional folding equipment, greatly reduces the cost of manpower and equipment in the production process, and significantly improves the economic benefits of napkin production.

[0023] (2) All the post-processing steps of napkin paper are integrated into one, so that the entire post-processing process can be completed in a fully automated manner inside the equipment without the need for human intervention, truly realizing an efficient, accurate and unmanned production model.

[0024] (3) It effectively solved the problem of low production efficiency caused by excessive manual participation and achieved the goal of efficient and high-quality production of napkins.

[0025] (4) It avoids the potential risks that manual operation may bring to product quality and production safety, and effectively guarantees the quality of finished napkin paper and production safety.

[0026] like Figures 1-6As shown together, the cutting device includes a paper feed suction roller 4, a lower cutting roller 5 and a paper discharge suction roller 6 which are arranged in sequence along the paper material conveying direction. The paper feed suction roller 4, the lower cutting roller 5 and the paper discharge suction roller 6 are all rotatably mounted on the second frame 3. The paper material passes around the paper feed suction roller 4, the lower cutting roller 5 and the paper discharge suction roller 6 in sequence along an S-shaped route. An upper cutting roller 7 which is obliquely arranged is arranged above the lower cutting roller 5. The upper cutting roller 7 cooperates with the lower cutting roller 5 to perform knife cutting on the paper material. One end of the upper cutting roller 7 is rotatably mounted on the second frame 3 and is connected to a knife lifting assembly 8.

[0027] In this embodiment, the peripheral walls of the paper feed suction roller 4 and the paper discharge suction roller 6 are provided with a plurality of suction holes for absorbing napkins, and both are internally connected to a suction air source (not shown in the figure).

[0028] like Figure 2-Figure 4 As shown together, a first drive motor 201 is mounted on the outer side of the first frame 2 , and a reducer 301 is fixedly mounted on the outer side of the second frame 3 .

[0029] The input end of the reducer 301 forms a transmission connection with the output end of the first drive motor 201, and its output end realizes power transmission with the lower cutting roller 5 through the first belt transmission assembly 302, and the lower cutting roller 5 further synchronously drives the paper feed suction roller 4 and the paper discharge suction roller 6 to rotate through the first gear transmission assembly 303.

[0030] In this embodiment, the paper feed suction roller 4 and the lower cutting roller 5 rotate in the same direction, and the paper discharge suction roller 6 rotates in the opposite direction to the lower cutting roller 5. Through this steering coordination, stable transportation and precise cutting and connection of paper materials are achieved.

[0031] like Figure 6-Figure 8 As shown together, the folding device includes a folding component 9 and a paper blocking component 10 arranged below the paper discharge suction roller 6, and the paper blocking component 10 is arranged on the discharge side of the paper discharge suction roller 6.

[0032] In this embodiment, the folding assembly 9 folds and peels the napkin along the X-axis direction, and is driven by the reciprocating driving assembly 11 to perform reciprocating motion.

[0033] Moreover, the folding component 9 and the paper blocking component 10 work together to not only accurately limit the rear end of the napkin, providing reliable guarantee for the smooth peeling of the napkin, but also effectively prevent the napkin from continuously rotating with the paper discharge suction roller 6, and then smoothly peel off the folded napkin from the paper discharge suction roller 6, so that it falls accurately into the discharge device below, realizing automatic transmission to the packaging equipment.

[0034] like Figure 2 and Figure 9As shown together, the discharging device includes a receiving component 12 and a middle supporting component 13 arranged below the folding component 9. The discharging position of the receiving component 12 is connected to a feeding component 14, and the conveying end of the feeding component 14 is connected to a bidirectional discharging conveyor 15.

[0035] like Figures 1-6 As shown in the figure, the lower cutting roller 5 is extended along the Y-axis direction, and a plurality of lower cutting knives 501 are fixed on the peripheral wall of the lower cutting roller 5 at equal intervals along the axial direction. An upper cutting knife 701 is fixed at a lower position on the peripheral wall of the upper cutting roller 7, and the upper cutting knife 701 is extended along the axial direction of the upper cutting roller 7.

[0036] like Figure 10 and Figure 11 As shown together, the blade of the upper cutter 701 is a spirally twisted plate-shaped blade, and the shape of the blade of the upper cutter 701 is adapted to the cutting path of the lower cutter 501 .

[0037] In this embodiment, by setting the upper cutter 701 to an oblique spiral shape, the stress on the upper cutter 701 and the lower cutter 501 during the cutting process is effectively reduced; this design not only avoids the repeated "clicking" noise during cutting, but also reduces the wear of the tool due to stress concentration, thereby significantly extending the service life of the upper cutter 701 and the lower cutter 501.

[0038] like Figures 1-8 As shown together, the folding assembly 9 includes a folding roller 901 rotatably mounted on the second frame 3. The folding roller 901 is arranged below the contact position between the lower cutting roller 5 and the paper discharge suction roller 6. A folding gap 902 for folding the napkin in half and allowing the napkin to pass through is formed between the folding roller 901 and the paper discharge suction roller 6.

[0039] In this embodiment, the cut napkin first falls down onto the folding roller 901 below, and then the napkin is adsorbed by the paper discharge suction roller 6, and moves accordingly, so that the napkin is folded in half and passes through the folding gap 902, so that the napkin is folded in half.

[0040] like Figure 7 and Figure 8 As shown in the figure, a plurality of shift forks 903 are provided below the paper discharge suction roller 6 , and all the shift forks 903 are arranged in sequence and spaced apart along the Y-axis direction.

[0041] In this embodiment, the shift fork 903 is arranged in an S shape.

[0042] Among them, the end of the fork 903 away from the paper discharge suction roller 6 is commonly fixed with a folding shaft 904, and the folding shaft 904 is driven to rotate by the reciprocating drive assembly 11. The folding shaft 904 extends along the Y-axis direction and is rotatably installed on the second frame 3. The paper discharge suction roller 6 is provided with a number of slots 601 arranged on the side wall of the paper discharge suction roller 6 in sequence along the axial direction. The slots 601 are arranged one by one with the fork 903, and the other ends of the forks 903 are inserted into the corresponding slots 601.

[0043] like Figure 7 and Figure 8 As shown in the figure, the paper stop assembly 10 includes a plurality of paper stop rods 1001 arranged in sequence along the Y-axis direction. The paper stop rods 1001 and the shift forks 903 are staggered one by one. Each paper stop rod 1001 is arranged between two adjacent slots 601. A paper stop beam 1002 is fixed to one end of the paper stop rod 1001 away from the paper discharge suction roller 6. The paper stop beam 1002 extends along the Y-axis direction and has both ends fixed to the second frame 3.

[0044] In this embodiment, the core function of the paper stop rod 1001 is to implement precise limiting of the rear end of the napkin, and its function is mainly reflected in two aspects: on the one hand, it can cooperate with the fork 903 to jointly complete the peeling operation of the napkin on the paper discharge suction roller 6, ensuring that the peeling process of the napkin is stable and controllable; on the other hand, it can effectively prevent the napkin from continuously rotating upward with the paper discharge suction roller 6, providing reliable guarantee for the efficient implementation of subsequent processes.

[0045] like Figure 2-Figure 4 and Figure 9 As shown in common, the material receiving assembly 12 includes a material receiving beam 1201 slidably installed on the inner side of the second frame 3 along the Z-axis direction. The material receiving beam 1201 is driven by the first lifting drive mechanism to move in the Z-axis direction. The rear side wall of the material receiving beam 1201 is fixed with a plurality of material receiving claws 1202 arranged in sequence along the Y-axis direction. The material receiving claws 1202 are arranged directly below the folding assembly 9.

[0046] In this embodiment, the first lifting drive mechanism includes a second drive motor 1203 fixed to the outside of the second frame 3. The second drive motor 1203 drives the material receiving beam 1201 to move up and down along the Z-axis direction through the third belt transmission assembly 1204.

[0047] Among them, the middle supporting component 13 includes a lifting frame 1301 that is slidably installed in the second frame 3 along the Z-axis direction. The lifting frame 1301 is driven by the second lifting drive mechanism to move in the Z-axis direction. A translation beam 1302 is slidably installed on the lifting frame 1301 along the X-axis direction. A plurality of receiving claws 1303 arranged in sequence along the Y-axis direction are fixed on the rear side wall of the translation beam 1302. The receiving claws 1303 are arranged on the front side of the material receiving claws 1202, and all the receiving claws 1303 and the material receiving claws 1202 are staggered.

[0048] In this embodiment, the second lifting drive mechanism includes a third drive motor 1304 fixed to the second frame 3. The third drive motor 1304 drives the translation beam 1302 to perform lifting motion along the Z-axis direction through a fourth belt transmission assembly 1305.

[0049] like Figure 2 and Figure 9 As shown in common, a fourth drive motor 1306 is fixedly installed at the front end of the lifting frame 1301, and a second curved arm 1307 and a second rocker arm 1308 are commonly arranged between the fourth drive motor 1306 and the translation beam 1302. One end of the second curved arm 1307 is fixedly connected to the motor shaft of the fourth drive motor 1306, and the other end of the second curved arm 1307 is hingedly installed together with one end of the second rocker arm 1308, and the other end of the second rocker arm 1308 is hingedly installed on the translation beam 1302.

[0050] like Figure 2 and Figure 3 As shown together, the knife lifting assembly 8 includes a knife lifting cylinder 801 arranged on the outside of the second frame 3, the cylinder body of the knife lifting cylinder 801 is hingedly mounted on the outer wall of the second frame 3, and a knife lifting arm 802 is arranged between the piston rod of the knife lifting cylinder 801 and the shaft rod of the upper cutting roller 7. One end of the knife lifting arm 802 is fixedly mounted on the shaft rod of the upper cutting roller 7, and the other end of the knife lifting arm 802 is hingedly connected to the piston rod of the knife lifting cylinder 801.

[0051] In this embodiment, the knife lifting assembly 8 is configured to intermittently reciprocate the upper cutter 701 in the Z-axis direction, thereby preventing the upper cutter 701 from contacting the paper material and causing accidental damage.

[0052] like Figure 4 and Figure 7As shown together, the reciprocating drive assembly 11 includes a driving gear 1101 and a driven gear 1102 that are meshed with each other. The driving gear 1101 is fixedly mounted on the shaft of the paper discharge suction roller 6, and the driven gear 1102 is rotatably mounted on the outer wall of the second frame 3. An eccentric wheel 1103 is fixedly mounted on the mounting shaft of the driven gear 1102. A first crank arm 1104 and a first rocker arm 1105 are provided between the folding shaft 904 and the eccentric wheel 1103. One end of the first crank arm 1104 is rotatably connected to the eccentric wheel 1103, and the other end of the first crank arm 1104 is hingedly connected to the first rocker arm 1105. The other end of the first rocker arm 1105 is fixedly connected to the folding shaft 904.

[0053] like Figure 2 、 Figure 3 and Figure 8 As shown in the figure, a counter 1106 for counting the number of napkins dropped is installed on the second frame 3 , and the paper discharge suction roller 6 is connected to the input shaft of the counter 1106 through a second belt transmission assembly 1107 .

[0054] In this embodiment, the counter 1106 counts the number of napkins that fall by the number of rotations of the paper discharge suction roller 6 , and controls the operation of the discharge device according to the count of the counter 1106 .

[0055] Example 2 This embodiment is basically the same as the first embodiment, except that: like Figure 9 As shown, the feeding assembly 14 includes a feeding rack 1401 extending along the X-axis direction, and a plurality of conveyor belts 1402 arranged in sequence along the Y-axis direction are rotatably installed on the feeding rack 1401. The feeding end of the conveyor belt 1402 is connected to the conveying front end of the two conveying directions of the bidirectional discharging conveyor 15.

[0056] In this embodiment, the installation structure and driving principle of the conveyor belt 1402, and the structure and working principle of the bidirectional discharge conveyor 15 are all related to the prior art and are well known to ordinary technicians in this field, so they will not be described in detail here.

[0057] like Figure 3 and Figure 4 As shown in common, a pushing assembly 16 is provided above the rear end of the feeding assembly 14, and the pushing assembly 16 includes a truss 1601 fixed on the second frame 3, and two Z-direction cylinders 1602 are fixed on the truss 1601, and an X-direction cylinder 1603 is installed on the piston rod of each Z-direction cylinder 1602, and a pushing plate 1604 is fixed on the piston rod of each X-direction cylinder 1603.

[0058] In this embodiment, the paper stock for making napkin paper is wound into a round paper roll 101 with a large diameter.

[0059] like Figure 1 and Figure 12 As shown together, a loading device is installed on the loading rack 1 , and the loading device is used to lift the round paper roll 101 of the napkin paper and place it on a fixed position on the loading rack 1 .

[0060] Example 3 This embodiment is basically the same as the second embodiment, except that: like Figure 1 and Figure 12 As shown together, the feeding device includes a feeding assembly 17 arranged at the front end of the feeding rack 1, which is used to quickly feed the round paper roll 101 without the need for manual lifting.

[0061] Among them, the loading assembly 17 includes two loading arms 1701 respectively arranged on both sides of the loading rack 1, and the lower ends of the two loading arms 1701 are rotatably installed on the lower end of the front side of the loading rack 1 through the first hinge shaft 1702. The middle part of each loading arm 1701 is hingedly installed with a loading cylinder 1703 on the outer wall of the loading rack 1, and the rear wall of the upper end of each loading arm 1701 is provided with an axis groove 1704.

[0062] In this embodiment, since the axis of the round paper roll 101 passes through a support shaft 102 , the two shaft placement grooves 1704 are used to place the two ends of the support shaft 102 respectively.

[0063] At the same time, an L-shaped limit block 103 is fixed to the upper end of the wall panels on both sides of the loading rack 1, and an opening is provided at the front end of the limit block 103. When the loading arm 1701 rotates to the rearmost position, the opening size and height of the shaft groove 1704 are adapted to the opening on the front side of the limit block 103, so that the support shaft 102 can smoothly roll from the shaft groove 1704 to the limit block 103.

[0064] Moreover, a support roller 104 is rotatably installed on the top of the wall panels on both sides of the loading rack 1, and the axis of the support roller 104 extends along the X-axis direction. The height of the support roller 104 is adapted to the height of the opening on the limit block 103.

[0065] In this embodiment, the peripheral wall of the support shaft 102 presses on the inner wall of the opening of the limit block 103 and the peripheral wall of the support roller 104 , and can rotate inside the opening and on the support roller 104 .

[0066] like Figure 12-14 As shown together, the feeding device further includes a traction assembly 18 disposed at the lower inner end of the feeding rack 1 , and the traction assembly 18 is used to pull the paper stock of the napkin forward and enable the paper stock to be output in a suitable direction.

[0067] like Figure 12 and Figure 14 As shown together, the traction assembly 18 includes a traction frame 1801 arranged on the inner side of the loading frame 1, and an active roller 1802 and a driven roller 1803 are rotatably installed at both ends of the traction frame 1801, and the active roller 1802 is transmission-connected to the fifth drive motor 1804.

[0068] like Figure 13 and Figure 14 As shown together, the rear ends of the active roller 1802 and the traction frame 1801 are rotatably mounted on the loading rack 1 through the second hinge shaft 1805, and an adjusting cylinder 1806 is hingedly mounted between the rear end of the traction frame 1801 and the loading rack 1. The adjusting cylinder 1806 is arranged below the traction frame 1801, and the hinge point between the adjusting cylinder 1806 and the traction frame 1801 is located below the second hinge shaft 1805.

[0069] like Figure 12 As shown, the two ends of the driven roller 1803 are respectively rotatably mounted on a slide 1807, and each slide 1807 is slidably mounted on the front end of the traction frame 1801 along the X-axis direction. A first adjusting screw 1808 is rotatably mounted on the slide 1807, and the first adjusting screw 1808 is mounted on the traction frame 1801 in a threaded connection manner.

[0070] In this embodiment, by providing an adjusting cylinder 1806 and an articulated traction frame 1801, the staff can freely adjust the tension of the paper material according to actual conditions to ensure that the paper material obtains sufficient tension during the traction process, thereby avoiding problems such as paper deviation, uneven surface or large cutting deviation due to loose paper material, and avoiding paper breakage due to excessive tension of the paper material.

[0071] Example 4 This embodiment is basically the same as the third embodiment, except that: like Figures 15-19 As shown together, the printing device includes two first wall panels 19 fixed to the top of the first frame 2, and an upper printing roller 20 and a lower printing roller 21 are arranged between the first wall panels 19. The upper printing roller 20 and the lower printing roller 21 both extend along the Y-axis direction and are rotatably installed on the first wall panels 19. A printing gap (not shown in the figure) is formed between the upper printing roller 20 and the lower printing roller 21, and the paper material passes through the printing gap along the X-axis direction to realize automatic printing of the paper material.

[0072] like Figure 15-17As shown together, a sixth drive motor 202 and a first transmission shaft 203 are installed on the inner side of the first frame 2. The sixth drive motor 202 drives the first transmission shaft 203 to rotate through the fifth belt transmission assembly 204. The first transmission shaft 203 drives the upper printing roller 20 to rotate through the sixth belt transmission assembly 205. The upper printing roller 20 drives the lower printing roller 21 to rotate through the third gear transmission assembly 206.

[0073] like Figure 18-19 As shown in common, each first wall panel 19 is penetrated by a sliding cavity 1901 extending along the Z-axis direction, and an upper mounting seat 1902 and a lower mounting seat 1903 are arranged in each sliding cavity 1901. Both ends of the printing upper roller 20 are rotatably mounted on the upper mounting seat 1902, and both ends of the printing lower roller 21 are rotatably mounted on the lower mounting seat 1903.

[0074] The size of the printing gap is manually adjusted by the gap adjustment component 22, so that the printing device of the present invention can adapt to the production and processing of napkins with different thicknesses, ensuring the clarity and integrity of the printing on the napkins.

[0075] like Figure 16 and Figure 17 As shown together, the gap adjustment assembly 22 includes an upper wedge block 2201 and a lower wedge block 2202 arranged upper and lower. The upper wedge block 2201 is fixedly installed on the bottom of the upper mounting seat 1902, and the lower wedge block 2202 is slidably installed on the top of the lower mounting seat 1903 along the X-axis direction. The bottom inclined surface of the upper wedge block 2201 and the top inclined surface of the lower wedge block 2202 are in opposite directions and the two are fitted together. A second adjusting screw 2203 is commonly provided between the lower wedge block 2202 and the corresponding first wall panel 19. The second adjusting screw 2203 is extended along the X-axis direction. The second adjusting screw 2203 is threadedly connected to the lower wedge block 2202 and is rotationally connected to the first wall panel 19.

[0076] by Figure 17 Taking the figure as an example, the method of adjusting the printing gap is explained: when the printing gap needs to be increased, the lower wedge block 2202 is moved in the direction opposite to the conveying direction of the paper material by rotating the second adjusting screw 2203, and the top inclined surface of the lower wedge block 2202 pushes the upper wedge block 2201 to move upward, thereby lifting the printing upper roller 20 and increasing the printing gap.

[0077] When the printing gap needs to be reduced, the lower wedge block 2202 is moved toward the conveying direction of the paper material by rotating the second adjusting screw 2203 in the opposite direction. The upper wedge block 2201 loses its upward thrust and falls downward under the action of its own gravity, and the bottom inclined surface is always close to the top inclined surface of the lower wedge block 2202, thereby realizing the falling of the printing upper roller 20 and reducing the printing gap.

[0078] like Figure 18 and Figure 19 As shown together, a lifting component 23 is provided between the upper printing roller 20 and the first wall panel 19 for lifting the upper printing roller 20 .

[0079] Among them, the lifting component 23 includes two lifting cylinders 2301 extending along the Z-axis direction, the cylinder body of the lifting cylinder 2301 is hingedly installed on the first wall panel 19, and a lifting arm 2302 is hingedly installed between the piston rod of the lifting cylinder 2301 and the top of the first wall panel 19, and a pulling arm 2303 is hingedly installed between the lifting arm 2302 and the mounting seat 1902.

[0080] When the napkin paper to be produced does not need to be printed, the piston rod of the lifting cylinder 2301 is controlled to extend outward, driving the free end of the lifting arm 2302 to lift upward, and further driving the mounting seat 1902 to lift upward, so that the upper printing roller 20 is away from the lower printing roller 21. In this state, when the paper material passes through the printing gap, it will not contact the upper printing roller 20 and the lower printing roller 21, thereby avoiding the printing operation.

[0081] Therefore, the present invention is not only applicable to the production of napkins that require printing processing, but can also be flexibly applied to the production of napkins that do not require a printing process, and has wide applicability.

[0082] Example 5 This embodiment is basically the same as the fourth embodiment, except that: like Figure 15-17 as well as Figure 20 As shown together, the slitting device includes two second wall panels 24 arranged opposite to each other, and a slitting assembly 25 and a slitting knife 26 are installed above and below the two second wall panels 24.

[0083] like Figure 20 As shown, the slitting assembly 25 includes a slitting shaft 2501 rotatably installed between the second wall panels 24, the slitting shaft 2501 extends along the Y-axis direction, and at least two slitting rollers 2502 are fixed on the slitting shaft 2501 at intervals. There is a slitting gap 2503 between each adjacent slitting roller 2502, and the position of the slitting knife 26 corresponds to the position of the slitting gap 2503.

[0084] In this embodiment, the slitting knife 26 can be driven by existing linear drive equipment such as electric slides, screw nut mechanisms, and oil cylinders to perform linear motion in the Y-axis direction, and can also be driven by existing linear drive equipment to perform lifting motion in the Z-axis direction.

[0085] Example 6 This embodiment is basically the same as the fifth embodiment, except that: like Figure 15-17 as well as Figure 20 As shown in the figure, the folding device includes two position adjustment seats 27 spaced apart along the Y-axis direction. The position adjustment seats 27 are slidably installed between the two second wall panels 24 along the Y-axis direction. Each position adjustment seat 27 is adjusted in position by a position adjustment component 28.

[0086] like Figure 20 As shown, the position adjustment component 28 includes a third adjusting screw 2801 that is installed on the second wall panel 24 and rotates along the Y-axis direction. The third adjusting screw 2801 extends outward from the second wall panel 24 and is fixed with an adjustment handle 2802 at one end. The other end of the third adjusting screw 2801 is provided with a threaded section 2803. The position adjustment seat 27 is installed on the corresponding threaded section 2803 in a threaded connection manner. The staff can adjust the position of the position adjustment seat 27 by rotating the third adjusting screw 2801 according to the specifications of the paper material used and the predetermined cutting position.

[0087] like Figure 20 As shown, a folding assembly 29 is provided between the position adjustment seat 27 and the slitting roller 2502 .

[0088] Among them, the folding component 29 includes a paper guide inclined plate 2901 arranged obliquely downward along the X-axis direction, and the paper guide inclined plate 2901 is fixedly connected to the position adjustment seat 27 through a connecting arm 2902. There is a paper passing gap (not shown in the figure) between the upper end of the paper guide inclined plate 2901 and the peripheral wall of the slitting roller 2502. The lower end of the paper guide inclined plate 2901 is fixed with a paper stacking bottom plate 2903 extending along the X-axis direction, and at least two paper stacking upper plates 2904 are arranged above the paper stacking bottom plate 2903. All paper stacking upper plates 2904 are connected to the position adjustment seat 27 through a connecting frame 2905.

[0089] In this embodiment, there are folding gaps between the top of the paper stacking bottom plate 2903 and the paper stacking upper plate 2904, and between different paper stacking upper plates 2904, and the shapes and sizes of the gaps of the paper guide inclined plate 2901, the paper stacking bottom plate 2903 and the paper stacking upper plate 2904 can be replaced and adjusted as needed.

[0090] like Figure 15-17 As shown in common, a second transmission shaft 207 is rotatably installed in the first frame 2, the first transmission shaft 203 drives the second transmission shaft 207 to rotate through the seventh belt transmission assembly 208, and the second transmission shaft 207 drives the slitting shaft 2501 to rotate through the eighth belt transmission assembly 209.

[0091] Example 7 This embodiment is basically the same as the fifth embodiment, except that: like Figure 15 As shown, a pressing assembly 30 is provided at the top of the rear end of the first frame 2, and the pressing assembly 30 includes two front pressing rollers 3001 extending along the Y-axis direction. The two front pressing rollers 3001 are coaxially arranged, and their positions correspond to the paper outlet position of the folding assembly 29. A rear pressing roller 3002 extending along the Y-axis direction is provided on the rear side of the front pressing roller 3001. The paper material passes around the front pressing roller 3001 and the rear pressing roller 3002 in an S shape to press the folded paper material along the crease.

[0092] In this embodiment, the front pressing roller 3001 and the rear pressing roller 3002 are both rotatably mounted on the first frame 2 .

[0093] In the present invention, the specific structures and transmission principles of each belt transmission assembly and gear transmission assembly belong to the prior art and are well known to those skilled in the art, and will not be described in detail here.

[0094] The fully automated post-processing process of napkin paper using the present invention is as follows: S1. Control the piston rod of the loading cylinder 1703 to extend outward, pushing the loading arm 1701 to rotate forward and finally rotate to the unloading position. The staff can then place the round paper roll 101 placed on the transfer vehicle (not shown) between the two loading arms 1701, so that the two ends of the support shaft 102 are placed in the corresponding shaft grooves 1704; S2. Control the piston rod of the loading cylinder 1703 to retract inward, driving the loading arm 1701 to rotate and stand upright, and finally make the shaft groove 1704 connect with the opening of the limit block 103, so that the round paper roll 101 can be pushed onto the loading rack 1, and the two ends of the support shaft 102 are respectively pressed against the peripheral wall of the corresponding support roller 104, thus realizing the loading of the round paper roll 101; S3, the free end of the paper material first extends forward, first bypasses the driven roller 1803 to turn, so that the paper material extends backward and bypasses the active roller 1802 to turn, so that the paper material extends upward and enters the printing gap between the printing upper roller 20 and the printing lower roller 21 in the appropriate direction, completing the automated printing work on the paper material; S4: The printed paper passes through the gap between the slitting blade 26 and the slitting roller 2502 and is wound around the slitting roller 2502. The slitting blade 26 is used to cut the paper into two strips along the X-axis. S5. The two paper sheets pass through the two paper feeding gaps and enter under the paper stacking bottom plate 2903. They are attached to the bottom surface of the paper stacking bottom plate 2903 and then pass through the corresponding folding gaps according to the predetermined shape. The paper sheets are folded using the side edges of the paper stacking bottom plate 2903 and the paper stacking upper plate 2904. S6: The folded paper passes through the front pressing roller 3001 and the rear pressing roller 3002, where the paper is pressed along the fold. The paper then passes through the paper feed suction roller 4, the lower cutting roller 5, and the paper discharge suction roller 6 in an S-shaped manner, and passes through the cutting gap between the upper cutting roller 7 and the lower cutting roller 5. S7, during the telescopic movement of the piston rod of the knife-lifting cylinder 801, the upper cutting roller 7 continuously rotates back and forth under the power transmission of the knife-lifting arm 802, so that the upper cutter 701 repeatedly raises and lowers the knife at intervals. When the lower cutter 501 of the lower cutting roller 5 leaves the cutting position, the upper cutter 701 is raised. When the lower cutter 501 of the lower cutting roller 5 rotates to the cutting position, the upper cutter 701 is lowered. The lower cutting roller 5 continues to rotate to ensure that the lower cutter 501 and the upper cutter 701 perform point-to-point cutting, and the paper material passing through the cutting gap is cut at equal intervals, and the paper material is cut into square napkins; S8. The cut napkin falls onto the folding roller 901 below and is sucked by the discharge suction roller 6, so that the napkin is folded in half while passing through the folding gap 902. The folded napkin is adsorbed on the discharge suction roller 6 and rotates with it to the peeling position below. At the same time, the discharge suction roller 6 drives the shift fork 903 to swing up and down with its rotation through power transmission. During the upward swing, the shift fork 903 peels the folded napkin from the discharge suction roller 6 and drops it onto the receiving claw 1202 below. S9. The counter 1106 counts the number of napkins dropped by the number of rotations of the paper discharge suction roller 6. When the count of the counter 1106 reaches a preset value, the second drive motor 1203 drives the receiving claw 1202 to drop by power transmission. At the same time, the fourth drive motor 1306 drives the receiving claw 1303 to move rearward along the X-axis direction to the receiving position by power transmission to temporarily receive the dropped napkins. S10, the receiving claw 1202 finally falls to the discharge height and is inserted between the conveyor belts 1402, and the conveyor belts 1402 are used to convey the two stacks of napkins on the receiving claw 1202 backward. The receiving claw 1202, which has completed the discharge action, is driven by the second drive motor 1203 to rise again, and at the same time, the third drive motor 1304 drives the receiving claw 1303 to fall through power transmission; S11. After the receiving claw 1303 crosses the material receiving claw 1202, the napkin on the receiving claw 1303 is transferred to the material receiving claw 1202. Then, the material receiving claw 1202 continues to rise until it reaches the material receiving height. Driven by the third drive motor 1304 and the fourth drive motor 1306, the receiving claw 1303 returns to the waiting position and waits for the next action. S12, the conveyor belt 1402 conveys the napkin backward to the pushing position, and the pushing plate 1604 is driven by the Z-direction oil cylinder 1602 and the X-direction oil cylinder 1603 to drop to the pushing height and push the napkin from the conveyor belt 1402 to the bidirectional discharge conveyor 15, and then the pushing plate 1604 returns to the initial position to wait for the next action; S13, the bidirectional discharging conveyor 15 conveys the two stacks of napkins in opposite directions to corresponding packaging equipment for automatic packaging.

[0095] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic production device for inner-folding napkin paper, comprising a loading rack (1), a first rack (2) and a second rack (3) arranged in sequence along the X-axis direction, wherein paper material passes through the loading rack (1), the first rack (2) and the second rack (3) in sequence along the X-axis direction, characterized in that: The loading rack (1) is equipped with a loading device, the first rack (2) is equipped with a printing device, a slitting device and a folding device arranged in sequence along the X-axis direction, and the second rack (3) is equipped with a cutting device, a stacking device and a discharging device; The cutting device comprises a paper feed suction roller (4), a lower cutting roller (5) and a paper discharge suction roller (6) which are sequentially arranged along the paper material conveying direction. The paper feed suction roller (4), the lower cutting roller (5) and the paper discharge suction roller (6) are all rotatably mounted on the second frame (3). The paper material passes through the paper feed suction roller (4), the lower cutting roller (5) and the paper discharge suction roller (6) in sequence along an S-shaped route. An upper cutting roller (7) which is obliquely arranged is arranged above the lower cutting roller (5). The upper cutting roller (7) cooperates with the lower cutting roller (5) to perform knife-aligned cutting on the paper material. One end of the upper cutting roller (7) is rotatably mounted on the second frame (3) and is connected to a knife-lifting assembly (8). The folding device comprises a folding assembly (9) and a paper stop assembly (10) arranged below the paper discharge suction roller (6); the paper stop assembly (10) is arranged on the discharge side of the paper discharge suction roller (6); The discharging device comprises a receiving assembly (12) and a middle supporting assembly (13) arranged below the folding assembly (9); a feeding assembly (14) is connected to the discharging position of the receiving assembly (12); and a bidirectional discharging conveyor (15) is connected to the conveying end of the feeding assembly (14).

2. The fully automatic production equipment for inner-folding napkins according to claim 1, characterized in that: The lower cutting roller (5) is arranged to extend in the Y-axis direction, and a plurality of lower cutting knives (501) are fixed on the peripheral wall of the lower cutting roller (5) at equal intervals along the axial direction. An upper cutting knife (701) is fixed at a lower position on the peripheral wall of the upper cutting roller (7), and the upper cutting knife (701) is arranged to extend in the axial direction of the upper cutting roller (7). The blade of the upper cutting knife (701) is a spirally twisted plate-shaped blade, and the shape of the blade of the upper cutting knife (701) is adapted to the cutting path of the lower cutting knife (501).

3. The fully automatic production equipment for inner-folding napkins according to claim 1, characterized in that: The folding assembly (9) comprises a folding roller (901) rotatably mounted on the second frame (3). The folding roller (901) is arranged below the contact position between the lower cutting roller (5) and the paper discharge suction roller (6). A folding gap (902) for folding the napkin in half and allowing the napkin to pass through is formed between the folding roller (901) and the paper discharge suction roller (6).

4. The fully automatic production equipment for inner-folding napkins according to claim 3, characterized in that: A plurality of shift forks (903) are provided below the paper discharge suction roller (6), and all the shift forks (903) are arranged at intervals in sequence along the Y-axis direction. A folding shaft (904) is fixed to one end of the shift forks (903) away from the paper discharge suction roller (6), and the folding shaft (904) is driven to rotate by the reciprocating drive assembly (11). The folding shaft (904) extends along the Y-axis direction and is rotatably mounted on the second frame (3). A plurality of slots (601) arranged on the side wall of the paper discharge suction roller (6) are provided at intervals in sequence along the axial direction on the paper discharge suction roller (6), and the slots (601) and the shift forks (903) are arranged in a one-to-one correspondence, and the other ends of the shift forks (903) are inserted into the corresponding slots (601).

5. The fully automatic production equipment for inner-folding napkins according to claim 4, characterized in that: The paper stop assembly (10) comprises a plurality of paper stop rods (1001) arranged in sequence at intervals along the Y-axis direction. The paper stop rods (1001) and the shift forks (903) are arranged one by one in an alternating manner. Each paper stop rod (1001) is arranged between two adjacent slots (601). One end of the paper stop rod (1001) away from the paper discharge suction roller (6) is fixed with a paper stop beam (1002). The paper stop beam (1002) extends along the Y-axis direction and has both ends fixed to the second frame (3).

6. The fully automatic production equipment for inner-folding napkins according to claim 1, characterized in that: The material receiving assembly (12) comprises a material receiving beam (1201) slidably mounted on the inner side of the second frame (3) along the Z-axis direction, the material receiving beam (1201) being driven by a first lifting drive mechanism to move in the Z-axis direction, and a plurality of material receiving claws (1202) arranged in sequence and spaced apart along the Y-axis direction are fixed to the rear side wall of the material receiving beam (1201), and the material receiving claws (1202) are arranged directly below the folding assembly (9).

7. The fully automatic production equipment for inner-folding napkins according to claim 6, characterized in that: The center support assembly (13) comprises a lifting frame (1301) slidably mounted in the second frame (3) along the Z-axis direction. The lifting frame (1301) is driven by a second lifting drive mechanism to move in the Z-axis direction. A translation beam (1302) is slidably mounted on the lifting frame (1301) along the X-axis direction. A plurality of receiving claws (1303) arranged at intervals in the Y-axis direction are fixed to the rear side wall of the translation beam (1302). The receiving claws (1303) are arranged in front of the material receiving claws (1202). All the receiving claws (1303) and the material receiving claws (1202) are staggered.

8. The fully automatic production equipment for inner-folding napkins according to claim 7, characterized in that: A fourth drive motor (1306) is fixedly mounted on the front end of the lifting frame (1301); a second crank arm (1307) and a second rocker arm (1308) are provided between the fourth drive motor (1306) and the translation beam (1302); one end of the second crank arm (1307) is fixedly connected to the motor shaft of the fourth drive motor (1306); the other end of the second crank arm (1307) is hingedly mounted to one end of the second rocker arm (1308); and the other end of the second rocker arm (1308) is hingedly mounted on the translation beam (1302).

9. The fully automatic production equipment for inner-folding napkins according to claim 2, characterized in that: The knife lifting assembly (8) includes a knife lifting cylinder (801) arranged on the outside of the second frame (3), the cylinder body of the knife lifting cylinder (801) is hingedly mounted on the outer wall of the second frame (3), and a knife lifting arm (802) is arranged between the piston rod of the knife lifting cylinder (801) and the shaft rod of the upper cutting roller (7), one end of the knife lifting arm (802) is fixedly mounted on the shaft rod of the upper cutting roller (7), and the other end of the knife lifting arm (802) is hingedly connected to the piston rod of the knife lifting cylinder (801).

10. The fully automatic production equipment for inner-folding napkins according to claim 4, characterized in that: The reciprocating drive assembly (11) comprises a driving gear (1101) and a driven gear (1102) meshing with each other, wherein the driving gear (1101) is fixedly mounted on the shaft of the paper discharge suction roller (6), and the driven gear (1102) is rotatably mounted on the outer wall of the second frame (3). An eccentric wheel (1103) is fixedly mounted on the mounting shaft of the driven gear (1102), and a first crank arm (1104) and a first rocker arm (1105) are provided between the folding shaft (904) and the eccentric wheel (1103). One end of the first crank arm (1104) is rotatably connected to the eccentric wheel (1103), and the other end of the first crank arm (1104) is hingedly connected to the first rocker arm (1105), and the other end of the first rocker arm (1105) is fixedly connected to the folding shaft (904).

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