3D embossing device for paper diaper production

Abstract

The invention relates to the technical field of embossing equipment, in particular to a 3D embossing device for paper diaper production. A lifting groove is formed in the top of the mounting base, heating channel equipment is arranged at the top of the mounting base and arranged on one side of the lifting groove, a replacement assembly is movably arranged in the lifting groove, a plurality of sets of different embossing assemblies are arranged in the replacement assembly, and supporting foot plates are symmetrically arranged at the bottoms of the two sides of the mounting base. U-shaped frames are arranged on the two foot supporting plates, an efficient winding and unwinding assembly is arranged in each U-shaped frame, and an auxiliary fixing assembly is arranged on one side of each U-shaped frame. The multiple sets of embossing assemblies of different specifications are carried through the replacement assembly, embossing die rollers can be rapidly switched according to the pattern requirements of paper diaper products, shutdown disassembly and reassembly are not needed, the replacement assembly drives double lead screws to synchronously run through a third motor, a fixing frame is driven to ascend and descend, and the target embossing assembly can be rapidly adjusted to the operation position; and the problem of time consumption of remodeling of a traditional single-roller device is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of embossing equipment technology, specifically a 3D embossing device for diaper production. Background Technology

[0002] In the production and processing of diapers, the 3D embossing process is a key step in improving the comfort and aesthetics of the product. The performance of the embossing device directly determines the forming quality and production efficiency of the diaper surface pattern.

[0003] Currently, most conventional 3D embossing devices for diapers on the market use a single-specification embossing roller structure. When it is necessary to replace the embossing roller with a different pattern to meet the diverse product production needs, it is often necessary to stop the machine, disassemble the original embossing roller, and reinstall it. This not only involves a complicated operation process but also consumes a lot of time, seriously affecting the continuous operation efficiency of the entire production line.

[0004] Meanwhile, the winding and unwinding mechanisms of existing embossing devices are usually single-roller designs. After completing the embossing operation of a roll of substrate, the machine needs to be stopped to unload and reload, resulting in a long operation interval. Furthermore, the installation and fixing methods of the material rollers in some winding and unwinding mechanisms are complicated, and special tools are required during disassembly and assembly, which further reduces the convenience of production.

[0005] Therefore, developing a 3D embossing device for diaper production that can quickly change embossing components and achieve continuous unwinding and winding operations has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to address the deficiencies and shortcomings of the prior art by providing a reasonably designed 3D embossing device for diaper production, which can solve the aforementioned deficiencies.

[0007] To achieve the above objectives, the invention provides the following technical solution: it includes a mounting base, the top of which has a lifting groove, a heating channel device on the top of which is located, the heating channel device being located on one side of the lifting groove, a replacement component being movably arranged within the lifting groove, the replacement component containing an array of different embossing components, support plates symmetrically arranged on both sides of the bottom of the mounting base, each support plate having a U-shaped frame, each U-shaped frame containing a high-efficiency winding and unwinding component, and each U-shaped frame having an auxiliary fixing component on one side.

[0008] Preferably, a mounting bracket one is provided on one outer wall of the U-shaped frame, a mounting bracket two is provided on the other outer wall of the U-shaped frame, a pair of fixed protective shells are symmetrically provided on the top of the mounting base, the two fixed protective shells are symmetrically arranged on the front and rear sides of the lifting groove, and a mounting bracket three is provided on the top of each fixed protective shell.

[0009] Preferably, the high-efficiency winding and unwinding assembly includes a rotating shaft, which is movably mounted in a U-shaped frame via a pair of bearing seats. Fixed plates are symmetrically arranged on both sides of the U-shaped frame. Each fixed plate has mounting slots on both sides, with the two mounting slots located above one side and below the other side of the fixed plate, respectively. A semi-circular shell is provided on the inner bottom surface of each mounting slot, and several rollers are movably mounted inside each semi-circular shell. Positioning plates are symmetrically arranged on both sides of the opening of each mounting slot. A detachable pressure block is provided inside the mounting slot, and several rollers are movably mounted at the bottom of the pressure block. An anti-detachment plate is provided on the top of the pressure block. The two positioning plates and the anti-detachment plate are fixed together by bolts. A winding and unwinding roller is arranged between two corresponding mounting slots on the two fixed plates, and the shaft ends of the winding and unwinding roller are simultaneously located between the semi-circular shell and the pressure block.

[0010] Preferably, the mounting bracket 2 is provided with a first reducer, the first reducer is provided with a first motor, the transmission end of the first motor is connected to the input end of the first reducer, and the transmission end of the first reducer is connected to one end of the rotating shaft through a coupling.

[0011] Preferably, on one side of the high-efficiency winding and unwinding assembly, both winding and unwinding rollers are provided with a first transmission gear on the same side, and a pair of second reducers are provided on the fixed plate near the first transmission gear. Each of the two second reducers is provided with a second motor. The transmission end of the second motor is connected to the input end of the second reducer. The transmission end of the second reducer is provided with a second transmission gear, which meshes with the first transmission gear.

[0012] Preferably, the auxiliary fixing component includes a telescopic cylinder mounted on the mounting frame. The top of the telescopic rod of the telescopic cylinder is provided with a push-pull plate, and the top of the push-pull plate is provided with a pair of positioning rods. A pair of positioning holes corresponding to the positioning rods are opened on the fixing plate near the auxiliary fixing component, and the two positioning rods are respectively inserted into the two positioning holes.

[0013] Preferably, the replacement component includes a pair of lead screws, which are movably mounted in two fixed protective shells via a pair of bearing seats. A third reducer is mounted on the top of the mounting frame three. The transmission end of the third reducer is connected to the top of the lead screw via a coupling. A transmission link is provided between the two third reducers. The output ends of both third reducers are connected to one end of the transmission link via a coupling. A third motor is mounted on one of the third reducers. The transmission end of the third motor is connected to the input end of the third reducer. A fixed frame is movably mounted in the lifting groove. A drive plate is mounted on the top of both sides of the fixed frame. The two drive plates are respectively mounted in the two fixed protective shells, and each drive plate is equipped with a nut. The nut is threaded onto the lead screw. Several mold roller frames are mounted in the fixed frame, and several different embossing components are respectively mounted in the several mold roller frames.

[0014] Preferably, the embossing assembly includes an upper embossing roller and a lower embossing roller. Both the upper and lower embossing rollers are movably mounted in the roller frame via a pair of bearing seats. A transmission gear three is provided at the same end of both the upper and lower embossing rollers, and the two transmission gear threes are meshed together. A fourth motor is provided on one side of the roller frame, and a fourth reducer is provided on the fourth motor. The transmission end of the fourth motor is connected to the input end of the fourth reducer, and the transmission end of the fourth reducer is connected to one end of the upper embossing roller via a coupling.

[0015] The beneficial effects of the invention after adopting the above structure are: 1. This invention allows for the rapid switching of embossing rollers according to the pattern requirements of diaper products by replacing components with arrays of embossing components of different specifications. This eliminates the need for machine downtime for disassembly and reassembly. The replacement of components is driven by a third motor that operates the dual lead screws synchronously, which in turn raises and lowers the fixed frame. This allows for the rapid adjustment of the target embossing component to the working position, effectively avoiding the time-consuming changeover problem of traditional single-roller devices. This significantly shortens the interval between production line changes, improves the flexible production adaptability of multi-specification products, and ensures the continuous and efficient operation of the production line.

[0016] 2. The high-efficiency winding and unwinding assembly of the present invention adopts an alternating operation design of dual winding and unwinding rollers. Operators can complete the pre-loading of the next roll of material during the current roll embossing process. After the current roll operation is completed, the first motor drives the rotating shaft to rotate 180 degrees and quickly locks it with the positioning bracket of the auxiliary fixing assembly, so as to switch to the operation of the new roll. At the same time, the winding and unwinding rollers are clamped and fixed by the rollers of the semi-circular shell and the pressure block. No special tools are required for disassembly and assembly, further simplifying the operation process, realizing uninterrupted continuous winding and unwinding operations, and significantly improving the overall production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mounting base structure of the present invention; Figure 3 This is a schematic diagram of the structure of the high-efficiency winding and unwinding assembly and the auxiliary fixing assembly of the present invention during assembly; Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a schematic diagram of the structure of the high-efficiency take-up and unwind assembly of the present invention when the one-side pressure block is unfolded after the take-up and unwind rollers are removed. Figure 6 for Figure 5 Enlarged view of point A in the image; Figure 7 This is a schematic diagram of the high-efficiency take-up and unwinding assembly equipped with a transmission gear according to the present invention. Figure 8 for Figure 7 Enlarged view of point A in the middle; Figure 9 This is a schematic diagram of the replacement component and embossing component structure of the present invention; Figure 10 This is a schematic diagram of the embossing component structure of the present invention.

[0018] Explanation of reference numerals in the attached figures: Mounting base 1, support plate 10, U-shaped frame 11, lifting groove 12, fixed protective shell 13, mounting frame one 14, mounting frame two 15, mounting frame three 16, high-efficiency winding and unwinding assembly 2, rotating shaft 20, fixed plate 21, mounting groove 22, semi-circular shell 23, roller 24, positioning plate 25, pressure block 26, anti-detachment plate 27, bolt group 28, positioning hole 29, first reducer 210, first motor 211, winding and unwinding roller 212, heating channel equipment 3, bearing seat 4, coupling 5. Auxiliary fixing component 6. Telescopic cylinder 60. Push-pull plate 61. Positioning support rod 62. Transmission gear one 7. Second reducer 70. Second motor 71. Transmission gear two 72. Replacement component 8. Lead screw 80. Third reducer 81. Transmission connecting rod 82. Third motor 83. Fixing frame 84. Drive plate 85. Lead screw nut 86. Mold roller frame 87. Embossing component 9. Upper embossing mold roller 90. Lower embossing mold roller 91. Transmission gear three 92. Fourth motor 93. Fourth reducer 94. Detailed Implementation

[0019] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0020] like Figures 1-10 As shown, the present invention proposes a 3D embossing device for diaper production, which includes a mounting base 1. The top of the mounting base 1 is provided with a lifting groove 12 in the vertical direction. A heating channel device 3 is fixedly installed on the top of the mounting base 1. The heating channel device 3 is located on one side of the lifting groove 12 and is used to preheat the diaper substrate to improve the embossing effect. A replacement component 8 is movably installed in the lifting groove 12. An array of embossing components 9 with different pattern specifications can be detachably installed in the replacement component 8 to meet the diverse needs of 3D embossing production. Support plates 10 are symmetrically welded to the bottom of both sides of the mounting base 1. A U-shaped frame 11 is fixedly installed on the top of each support plate 10. Each U-shaped frame 11 is equipped with a high-efficiency winding and unwinding component 2. An auxiliary fixing component 6 is provided on one side of the outer wall of each U-shaped frame 11 to ensure the stability of the high-efficiency winding and unwinding component 2 during operation. Mounting bracket 14 is bolted to one side of the outer wall of the U-shaped frame 11, and mounting bracket 2 15 is correspondingly fixed to the other side of the outer wall. A pair of fixed protective shells 13 are symmetrically arranged on the top of the mounting base 1. The two fixed protective shells 13 are respectively covered on the front and rear sides of the lifting groove 12. Mounting bracket 3 16 is welded to the top of each fixed protective shell 13 to support the drive component of the replacement component 8. The high-efficiency winding and unwinding assembly 2 includes a rotating shaft 20, which is rotatably mounted inside a U-shaped frame 11 via a pair of bearing seats 4. Fixed plates 21 are symmetrically welded to both sides of the U-shaped frame 11. Each fixed plate 21 has mounting slots 22 on both sides, located above one side and below the other side of the fixed plate 21, respectively, in a symmetrical arrangement. A semi-circular shell 23 is fixedly installed on the inner bottom surface of each mounting slot 22, and several rollers 24 are movably embedded within each semi-circular shell 23. Positioning elements are symmetrically welded to both sides of the slot opening of the mounting slot 22. Plate 25, mounting groove 22 is detachably provided with pressure block 26, the bottom of pressure block 26 is correspondingly and movably embedded with several rollers 24, the top of pressure block 26 is integrally formed with anti-detachment plate 27, the two positioning plates 25 and anti-detachment plate 27 are locked and fixed by bolt group 28, the two fixed plates 21 are supported between the two corresponding mounting grooves 22, the shaft ends of the winding and unwinding roller 212 are simultaneously clamped between the semi-circular shell 23 and the rollers 24 of pressure block 26, the rolling friction of the rollers 24 reduces the resistance when the winding and unwinding roller 212 rotates; The mounting bracket 215 is bolted with a first reducer 210. The input end of the first reducer 210 is connected to a first motor 211. The transmission end of the first motor 211 is connected to the input end of the first reducer 210. The transmission end of the first reducer 210 is coaxially connected to one end of the rotating shaft 20 through a coupling 5, which is used to drive the rotating shaft 20 to rotate the fixed plate 21 180 degrees. On one side of the high-efficiency take-up and unwind assembly 2, both take-up and unwind rollers 212 are connected to the same end of a transmission gear 7. A pair of second reducers 70 are bolted to the fixed plate 21 near the transmission gear 7. The input ends of the two second reducers 70 are connected to second motors 71. The transmission end of the second motors 71 is connected to the input end of the second reducers 70. The transmission end of the second reducers 70 is connected to a transmission gear 72. The transmission gear 72 meshes with the transmission gear 7. The take-up and unwind rollers 212 are driven to rotate through gear transmission to realize the take-up and unwinding operation of the substrate. The auxiliary fixing component 6 includes a telescopic cylinder 60 fixed on the mounting bracket 14. A push-pull plate 61 is welded to the top of the telescopic rod of the telescopic cylinder 60. A pair of positioning rods 62 are vertically welded to the top of the push-pull plate 61. A pair of positioning holes 29 adapted to the positioning rods 62 are opened on the fixing plate 21 on the side close to the auxiliary fixing component 6. The two positioning rods 62 are respectively inserted into the two positioning holes 29 to provide positioning support for the fixed plate 21 after it is flipped, so as to avoid shaking during operation. The replacement component 8 includes a pair of lead screws 80, which are rotatably mounted in two fixed protective housings 13 via a pair of bearing seats 4. A third reducer 81 is bolted to the top of the mounting bracket 16. The transmission end of the third reducer 81 is coaxially connected to the top end of the lead screws 80 via a coupling 5. A transmission link 82 is provided between the two third reducers 81. The output ends of both third reducers 81 are connected to both ends of the transmission link 82 via the coupling 5. A third motor 83 is connected to the input end of one of the third reducers 81. The transmission end is connected to the input end of the third reducer 81. The synchronous rotation of the two lead screws 80 is achieved through the transmission connecting rod 82. A fixed frame 84 is movably installed in the lifting groove 12. A drive plate 85 is welded to the top of both sides of the fixed frame 84. The two drive plates 85 extend into the two fixed protective shells 13 respectively, and a nut 86 is embedded in each drive plate 85. The nut 86 is threaded onto the lead screw 80. Several mold roller frames 87 are arranged horizontally in the fixed frame 84. Several embossing components 9 with different pattern specifications are installed in the mold roller frames 87 respectively. The embossing assembly 9 includes an upper embossing roller 90 and a lower embossing roller 91. Both the upper embossing roller 90 and the lower embossing roller 91 are rotatably mounted in the roller frame 87 via a pair of bearing seats 4. Both the upper embossing roller 90 and the lower embossing roller 91 are keyed to the same end with a transmission gear 92. The two transmission gears 92 are meshed together. A fourth motor 93 is bolted to one side of the roller frame 87. The output end of the fourth motor 93 is connected to a fourth reducer 94. The transmission end of the fourth motor 93 is connected to the input end of the fourth reducer 94. The transmission end of the fourth reducer 94 is coaxially connected to one end of the upper embossing roller 90 via a coupling 5. The synchronous reverse rotation of the upper embossing roller 90 and the lower embossing roller 91 is achieved through gear meshing transmission.

[0021] When using this 3D embossing device for diaper production, firstly, the diaper substrate roll to be embossed is mounted onto a roll-up roller 212 without a transmission gear 7. Then, the two ends of the roll-up roller 212 are placed in the corresponding mounting slots 22 of the two fixed plates 21, ensuring that the ends of the roll-up roller 212 are stably mounted on several rollers 24 inside the semi-circular shell 23. Then, two pressing blocks 26 are pressed into the mounting slots 22 respectively, so that several rollers 24 at the bottom of the pressing blocks 26 are pressed together synchronously on the top of the rollers. Then, the bolt group 28 is used to pass through the positioning plate 25 and the anti-detachment plate 27 to lock and fix the pressing blocks 26 in the mounting slots 22, thus completing the installation and fixing of the material roll. After the material roll is fixed, the controller controls the telescopic cylinder 60 of the corresponding auxiliary fixing component 6 to retract the telescopic rod, so that the two positioning support rods 62 move out of the positioning hole 29 of the fixing plate 21, releasing the positioning restriction on the fixing plate 21; then the controller controls the first motor 211 of the high-efficiency winding and unwinding component 2 containing the material roll to start, the first motor 211 drives the first reducer 210 to run, which in turn drives the rotating shaft 20 to rotate 180 degrees, so that the material roll flips to the inside, and then the telescopic cylinder 60 resets, pushes the telescopic rod to drive the positioning support rods 62 to re-insert into the positioning hole 29, and provides auxiliary support for the fixing plate 21 to prevent it from shifting during operation; Subsequently, according to the 3D embossing pattern requirements of the diaper product, the controller controls the third motor 83 to rotate forward or reverse. The third motor 83 drives the third reducer 81 connected to it to operate. The third reducer 81 drives the third reducer 81 on the other side to operate synchronously through the transmission link 82. The two third reducers 81 drive the two lead screws 80 to rotate synchronously. By using the threaded transmission cooperation between the nut 86 and the lead screw 80, the fixed frame 84 is driven to move up or down along the lifting groove 12 until the corresponding upper embossing mold roller 90 and lower embossing mold roller 91 in the fixed frame 84 move to the embossing operation position that matches the material roll, and the third motor 83 stops operating. Then, the beginning of the material roll is pulled out and preheated by passing it through the heating channel equipment 3 to make the substrate more plastic. Then, the preheated substrate is pulled through the gap between the upper embossing roller 90 and the lower embossing roller 91. Finally, the end of the substrate is fixed and wound onto the unwinding roller 212 of the high-efficiency take-up and unwinding assembly 2 on the other side to complete the substrate threading operation. Next, the controller controls the fourth motor 93 and the second motor 71 to start synchronously. The second motor 71 drives the second reducer 70 to run, and the second reducer 70 drives the transmission gear 2 72 to rotate. By using the meshing transmission gear 2 72 and the transmission gear 1 7, the unwinding roller 212 is driven to rotate, thereby realizing the continuous unwinding operation of the substrate. At the same time, the fourth motor 93 drives the fourth reducer 94 to run, and the fourth reducer 94 drives the upper embossing roller 90 to rotate. With the meshing transmission of the two transmission gears 3 92, the upper embossing roller 90 drives the lower embossing roller 91 to rotate synchronously in opposite directions, extruding the substrate that has been preheated between the two rollers to complete the 3D embossing process. During the embossing operation, the operator can preload the next roll of material to be embossed onto another roll 212 of the high-efficiency take-up and unwinding assembly 2 at the unwinding point. After the first roll of material is embossed, the telescopic cylinders 60 of the auxiliary fixing assemblies 6 on both sides are controlled by the controller to retract the telescopic rods synchronously, releasing the positioning of the fixing plates 21 on both sides. Then, the first motors 211 of the two high-efficiency take-up and unwinding assemblies 2 are controlled to run synchronously, driving the two rotating shafts 20 to rotate 180 degrees at the same time, so that the preloaded roll of material and the empty roll unwinding roller 212 on the take-up side are flipped to the working position. Then, the telescopic cylinders 60 are reset, and the positioning rods 62 are re-inserted into the positioning holes 29 to complete the fixing. The operator only needs to follow the above threading steps to pass the beginning of the new roll through the heating channel equipment 3 and the embossing component 9 in sequence and fix it on the take-up roller. Then the equipment can be started to perform the embossing operation of the second roll. While the second roll is being embossed, the operator can unload the first roll that has been embossed and preload the third roll on the empty roll unloading roller 212. This cycle can be repeated to greatly improve the continuous production efficiency of 3D embossing for diapers.

[0022] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the scope of protection of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A 3D embossing device for diaper production, comprising a mounting base (1), wherein a lifting groove (12) is provided on the top of the mounting base (1), and a heating channel device (3) is provided on the top of the mounting base (1), wherein the heating channel device (3) is disposed on one side of the lifting groove (12), characterized in that: The replacement assembly (8) is movably arranged in the lifting groove (12), a plurality of different embossing assemblies (9) are arranged in the replacement assembly (8), the bottom of the two sides of the mounting base (1) is symmetrically provided with a supporting plate (10), the U-shaped frame (11) is arranged on the two supporting plates (10), the high-efficiency winding and unwinding assembly (2) is arranged in each U-shaped frame (11), and the auxiliary fixing assembly (6) is arranged on one side of each U-shaped frame (11).

2. The 3D embossing device for paper diaper production according to claim 1, characterized in that: The mounting rack one (14) is arranged on the outer wall of one side of the U-shaped frame (11), the mounting rack two (15) is arranged on the outer wall of the other side of the U-shaped frame (11), and the mounting base (1) is symmetrically provided with a pair of fixed protective shells (13) on the top, the two fixed protective shells (13) are symmetrically arranged on the front and rear sides of the lifting groove (12), and the mounting rack three (16) is arranged on the top of each fixed protective shell (13).

3. The 3D embossing device for paper diaper production according to claim 2, characterized in that: The high-efficiency winding and unwinding assembly (2) comprises a rotating shaft rod (20), the rotating shaft rod (20) is movably arranged in the U-shaped frame (11) through a pair of bearing seats (4), the U-shaped frame (11) is symmetrically provided with a fixed plate body (21) on the two sides, the two sides of each fixed plate body (21) are provided with a mounting groove (22), and the two mounting grooves (22) are located above one side and below the other side of the fixed plate body (21), respectively, a semicircular shell (23) is arranged on the inner bottom surface of each mounting groove (22), a plurality of rolling columns (24) are movably arranged in each semicircular shell (23), a positioning plate (25) is symmetrically arranged on the two sides of the groove opening of each mounting groove (22), a detachable pressing block (26) is arranged in the mounting groove (22), a plurality of rolling columns (24) are movably arranged on the bottom of the pressing block (26), a anti-falling plate (27) is arranged on the top of the pressing block (26), the two positioning plates (25) and the anti-falling plate (27) are fixed through a bolt group (28), and the two mounting grooves (22) corresponding to the two fixed plate bodies (21) are provided with a winding and unwinding roller (212), and the shaft heads at the two ends of the winding and unwinding roller (212) are arranged between the semicircular shell (23) and the pressing block (26).

4. The 3D embossing device for paper diaper production according to claim 3, characterized in that: The first speed reducer (210) is arranged on the mounting rack two (15), the first motor (211) is arranged on the first speed reducer (210), the transmission end of the first motor (211) is connected with the input end of the first speed reducer (210), and the transmission end of the first speed reducer (210) is connected with one end of the rotating shaft rod (20) through the shaft coupling (5).

5. The 3D embossing device for paper diaper production according to claim 3, characterized in that: Two winding and unwinding rollers (212) of the high-efficiency winding and unwinding assembly (2) on one side are provided with a transmission gear one (7), and a pair of second speed reducers (70) are arranged on the fixed plate body (21) close to the transmission gear one (7), second motors (71) are arranged on the two second speed reducers (70), the transmission end of the second motor (71) is connected with the input end of the second speed reducer (70), a transmission gear two (72) is arranged on the transmission end of the second speed reducer (70), and the transmission gear two (72) is in meshing connection with the transmission gear one (7).

6. The 3D embossing device for paper diaper production according to claim 3, characterized in that: The auxiliary fixing assembly (6) comprises a telescopic cylinder (60) arranged on the mounting frame one (14), a push-pull plate (61) is arranged at the top of the telescopic rod of the telescopic cylinder (60), a pair of positioning support rods (62) are arranged at the top of the push-pull plate (61), a pair of positioning holes (29) corresponding to the positioning support rods (62) are arranged on the fixed plate body (21) close to the side of the auxiliary fixing assembly (6), and the two positioning support rods (62) are respectively inserted into the two positioning holes (29).

7. The 3D embossing device for paper diaper production according to claim 2, characterized in that: The replacement assembly (8) comprises a pair of lead screws (80), the two lead screws (80) are movably arranged in the two fixed protective shells (13) through a pair of bearing seats (4), a third speed reducer (81) is arranged at the top of the mounting frame three (16), the transmission end of the third speed reducer (81) is connected with the top end of the lead screw (80) through a shaft coupling (5), a transmission connecting rod (82) is arranged between the two third speed reducers (81), one end of the transmission connecting rod (82) is connected with the output ends of the two third speed reducers (81) through shaft couplings (5), a third motor (83) is arranged on one of the third speed reducers (81), the transmission end of the third motor (83) is connected with the input end of the third speed reducer (81), a fixed frame (84) is movably arranged in the lifting groove (12), drive plates (85) are arranged at the top of the two sides of the fixed frame (84), the two drive plates (85) are arranged in the two fixed protective shells (13), a lead screw nut (86) is arranged in each drive plate (85), the lead screw nut (86) is threadedly arranged on the lead screw (80), a plurality of die roller frames (87) are arranged in the fixed frame (84), and a plurality of different embossing assemblies (9) are arranged in the plurality of die roller frames (87).

8. The 3D embossing device for paper diaper production according to claim 7, characterized in that: The embossing assembly (9) comprises an upper embossing roller (90) and a lower embossing roller (91), the upper embossing roller (90) and the lower embossing roller (91) are movably arranged in the roller frame (87) through a pair of bearing seats (4), and the same end of the upper embossing roller (90) and the lower embossing roller (91) is provided with a transmission gear three (92), the two transmission gear threes (92) are meshed and connected, one side of the roller frame (87) is provided with a fourth motor (93), the fourth motor (93) is provided with a fourth speed reducer (94), the transmission end of the fourth motor (93) is connected with the input end of the fourth speed reducer (94), and the transmission end of the fourth speed reducer (94) is connected with one end of the upper embossing roller (90) through the shaft coupling (5).

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