An adaptive adjustment roller for embossing machine

Abstract

The present invention discloses an adaptively adjustable pressing roller for an embossing machine, belonging to the technical field of embossing equipment. It comprises a roller frame, a lifting assembly is mounted on the roller frame, two sets of rotating assemblies are mounted on the output end of the lifting assembly, and both ends of the main roller are plugged into the corresponding rotating assemblies; the rotating assembly comprises a support shaft rotatably connected to the output end of the lifting assembly, the roller is connected to the support shaft through a transmission assembly, a limit tube is slidably connected to the support shaft, a support tube is rotatably connected to the limit tube, the support tube is slidably connected to the output end of the lifting assembly, the support shaft is driven by connecting to the output end of the first motor, and a shifting rod fixedly mounted on the support tube is plugged into a track groove of a fixed plate for movement. The present invention realizes dual adaptive adjustment of roller spacing and embossing force through the coordinated feedback of the lifting assembly driven by a hydraulic cylinder and a sensor, and can dynamically adjust the lifting amount of the main roller according to the thickness of the product to avoid the problem of excessively deep or shallow indentations caused by uneven materials.

Description

Technical Field

[0001] The present invention relates to the technical field of embossing equipment, and more particularly to a self-adapting adjusting pressing roller for an embossing machine. Background Art

[0002] As core equipment for surface treatment of packaging products, embossing machines' processing quality directly impacts the commercial value of high-end products such as cosmetics boxes, gift boxes, and pharmaceutical packaging. The modern packaging industry is experiencing two major development trends: First, consumption upgrades are driving personalized and refined packaging, such as micro-relief effects on cosmetic boxes and deep, three-dimensional embossing on gift packaging. Second, the demand for flexible production is forcing equipment to adapt to a wide range of material thicknesses, posing a significant challenge to traditional embossing machines.

[0003] The roller flexibility of existing embossing machines is not ideal. When processing materials of varying thicknesses, changing materials, or adjusting the embossing gap, the mechanical pressure adjustment system cannot autonomously adjust the gap or respond in real time to material thickness fluctuations. Manual adjustment of the roller gap is required, making roller adjustment more difficult and prone to indentation depth deviations and misalignment. To address this issue, we propose an adaptively adjustable roller for embossing machines. Summary of the Invention

[0004] The object of the present invention is to provide a self-adapting pressure roller for an embossing machine, so as to solve the technical problem of poor adjustability of the pressure roller in the prior art.

[0005] An embodiment of the present invention provides an adaptively adjustable pressing roller for an embossing machine, comprising a roller frame, a lifting assembly mounted on the roller frame, two sets of rotating assemblies mounted on the output end of the lifting assembly, and two ends of a main roller plugged into corresponding rotating assemblies;

[0006] The rotating assembly includes a support shaft rotatably connected to the output end of the lifting assembly, a roller rotatably mounted on the roller frame is connected to the support shaft through a transmission assembly, a limit tube is slidably connected to the support shaft, a support tube is rotatably connected to the limit tube, the support tube is slidably connected to the output end of the lifting assembly, and the support shaft is driven by connecting to the output end of the first motor;

[0007] A fixed plate is fixedly mounted on the roller frame, and a shifting rod fixedly mounted on the support tube is inserted into a track groove of the fixed plate and moves;

[0008] The output end of the lifting component drives the rotating component to rise and fall, which can adjust the working distance between the main roller and the grinding roller. The transmission component is driven by the telescopic shaft, so that the main roller and the grinding roller can maintain synchronous transmission when the distance between them changes.

[0009] As a further description of the above technical solution, the lifting assembly includes a hydraulic cylinder mounted on a roller frame, the output end of the hydraulic cylinder is fixedly mounted on the lifting frame, the bottom of the lifting frame is mounted with a slider slidably connected to the roller frame, and a plurality of support rods are fixedly mounted on the slider;

[0010] The support tube is slidably connected to the corresponding support rod, and the support shaft is rotatably connected to the slider.

[0011] As a further description of the above technical solution, the track groove includes a first guide groove, a reversing groove and a second guide groove connected in sequence, the first guide groove and the second guide groove are not collinear, and the shift rod is inserted into the first guide groove, the reversing groove or the second guide groove for movement.

[0012] As a further description of the above technical solution, support blocks are fixedly installed at both ends of the main roller, and the support blocks are plugged into and matched with the end plug-in grooves opened on the support shaft, so that the two ends of the main roller are plug-in limited on the support shaft.

[0013] As a further description of the above technical solution, the transmission assembly includes two sets of first bevel gears, which are respectively mounted on the ends of the support shaft and the roller;

[0014] The telescopic shaft includes a shaft sleeve and a shaft rod that are slidably connected to each other, the shaft sleeve is rotatably connected to the roller frame, and the shaft rod is rotatably connected to the slider. Second bevel gears are fixedly installed on the shaft sleeve and the shaft rod, and the second bevel gears are meshed with the first bevel gears for transmission.

[0015] As a further description of the above technical solution, it also includes a roller changing assembly, which includes two sets of sleeves sleeved on the rollers and two sets of rotating frames fixedly mounted on the sleeves, the sleeves are rotatably connected to the roller frames, and the sleeves are driven by connecting to the output end of the drive assembly;

[0016] The support block is plugged into two groups of fourth limiting grooves provided on the rotating frame, and the stop block fixedly installed in the fourth limiting groove is plugged into the support block for axially limiting the support block.

[0017] As a further description of the above technical solution, a limiting rod is slidably connected to the sleeve, which is used to be inserted into the support block to fix the main roller. A first electromagnet is fixedly installed on one end of the limiting rod, a second electromagnet is fixedly installed on the rotating frame, and a first elastic member for pushing the first electromagnet is installed on the limiting rod.

[0018] As a further description of the above technical solution, a displacement sensor for distance measurement is fixedly mounted on the slider, and the slider is connected to the lifting rod via a pressure sensor.

[0019] As a further description of the above technical solution, a fixed disk is fixedly mounted on the support shaft, a detection hole is opened on the fixed disk, and a grating sensor is fixedly mounted on the slider.

[0020] As a further description of the above technical solution, a stop hole is provided on the rolling roller, a positioning rod is slidably connected to the roller frame, a third electromagnet is fixedly installed on the positioning rod, a fourth electromagnet is fixedly installed on the roller frame, and a second elastic part for pushing the third electromagnet is installed on the positioning rod.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] 1. The present invention realizes dual adaptive adjustment of roller spacing and embossing force through the coordinated feedback of hydraulic cylinder-driven lifting components, displacement sensors, and pressure sensors. It can dynamically adjust the lifting amount of the main roller according to the thickness of the product, and automatically compensate when the pressure exceeds the limit, avoiding the problem of excessively deep or shallow indentations caused by uneven materials.

[0023] 2. The present invention adopts a transmission assembly that links a bevel gear set with a telescopic shaft, which can adjust the roller spacing while maintaining the speed synchronization of the main roller and the grinding roller, reducing the risk of embossing misalignment and improving the embossing quality.

[0024] 3. The present invention realizes the online rapid replacement of the main roller through the cooperation of the 180° symmetrical rotating frame and the electromagnetic locking mechanism, greatly improving the efficiency of roller replacement. The main roller is inserted into the support shaft and the main roller is fixed by automatically controlling the limit tube during the lifting and lowering process of the support shaft, effectively reducing the difficulty of roller replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of an adaptively adjustable pressing roller for an embossing machine disclosed in a preferred embodiment of the present invention;

[0026] Figure 2 A cross-sectional view of a self-adapting pressure roller for an embossing machine disclosed in a preferred embodiment of the present invention;

[0027] Figure 3 A schematic diagram of a main roller connection structure of an adaptively adjustable pressing roller for an embossing machine disclosed in a preferred embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of a rotating assembly of a self-adaptive pressure roller for an embossing machine disclosed in a preferred embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the position of a plug-in slot for an adaptively adjustable pressing roller for an embossing machine disclosed in a preferred embodiment of the present invention;

[0030] Figure 6 A schematic diagram of the position of a lever for adaptively adjusting a pressing roller for an embossing machine disclosed in a preferred embodiment of the present invention;

[0031] Figure 7 A schematic diagram of the connection of a support block for an adaptively adjustable pressing roller for an embossing machine disclosed in a preferred embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of a main roller of an embossing machine that is self-adaptively adjustable;

[0033] Figure 9 A schematic diagram of the position of an overall transmission assembly of an adaptively adjustable pressure roller for an embossing machine disclosed in a preferred embodiment of the present invention;

[0034] Figure 10 A self-adaptive pressure roller for an embossing machine disclosed in a preferred embodiment of the present invention Figure 9 Enlarged view of point A in the middle;

[0035] Figure 11 This is a schematic diagram of the connection structure of a roller changing assembly for an embossing machine with an adaptively adjustable pressing roller disclosed in a preferred embodiment of the present invention;

[0036] Figure 12 A self-adaptive pressure roller for an embossing machine disclosed in a preferred embodiment of the present invention Figure 11 Enlarged view of point B in the middle.

[0037] Explanation of the numbers in the figure: 1. Roller frame; 2. Lifting assembly; 21. Hydraulic cylinder; 22. Lifting plate; 23. Lifting rod; 24. Pressure sensor; 25. Slider; 26. Support rod; 3. Rotating assembly; 31. Support shaft; 32. Limiting tube; 33. First limiting groove; 34. Limiting block; 35. Inserting groove; 36. Support tube; 37. Push rod; 5. First motor; 11. Fixed plate; 12. First guide groove; 13. Reversing groove; 14. Second guide groove; 4. Main roller; 41. Support block; 42. Second limiting groove; 43. Third limiting groove; 44. Positioning hole; 6. Grinding roller; 7 , transmission assembly; 71, first bevel gear; 72, bushing; 73, shaft; 74, second bevel gear; 8, roller changing assembly; 81, sleeve; 82, rotating frame; 83, fourth limiting groove; 84, stop block; 85, limiting rod; 86, first elastic member; 87, first electromagnet; 88, second electromagnet; 9, driving assembly; 91, second motor; 92, first gear; 93, second gear; 10, displacement sensor; 15, fixed disk; 16, grating sensor; 61, anti-rotation hole; 17, positioning rod; 18, second elastic member; 19, third electromagnet; 110, fourth electromagnet. DETAILED DESCRIPTION

[0038] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] Reference Figures 1 to 12 The present embodiment discloses an adaptively adjustable pressing roller for an embossing machine, comprising a roller frame 1, a lifting assembly 2 mounted on the roller frame 1, the lifting assembly 2 comprising a hydraulic cylinder 21 fixedly mounted on the roller frame 1, a lifting plate 22 fixedly mounted on the output end of the hydraulic cylinder 21, lifting rods 23 slidably connected to the roller frame 1 fixedly mounted at both ends of the lifting plate 22, a pressure sensor 24 fixedly mounted on the bottom of the lifting rod 23, a slider 25 fixedly mounted on the pressure end of the pressure sensor 24, the slider 25 being slidably connected to the roller frame 1, and a plurality of support rods 26 fixedly mounted on the slider 25.

[0040] Reference Figures 2 to 7 The cam 36 is fixedly mounted on the support shaft 31 to prevent the cam 36 from rotating and sliding against the support shaft 31. The cam 36 is fixedly mounted on the support shaft 31 to prevent the cam 36 from rotating and sliding against the support shaft 31.

[0041] Reference Figure 1 、 Figure 2 and Figure 6 The roller frame 1 is fixedly mounted with a fixed plate 11. The fixed plate 11 defines a first guide groove 12, a reversing groove 13, and a second guide groove 14, which are sequentially connected. The first guide groove 12 and the second guide groove 14 are spaced a certain distance apart in the axial direction of the support shaft 31. The opening direction of the first guide groove 12 and the second guide groove 14 is parallel to the axis of the lifting rod 23. The reversing groove 13 and the first guide groove 12 and the second guide groove 14 form a smooth transition. The shifting rod 37 is inserted into and moves within the first guide groove 12, the reversing groove 13, or the second guide groove 14. When the shifting rod 37 moves within the reversing groove 13, it drives the support tube 36 and the limiting tube 32 to move along the axial direction of the support shaft 31, thereby controlling the opening or closing of the upper and lower ends of the insertion slot 35.

[0042] Reference Figure 1 、 Figure 3 、 Figure 7 and Figure 8 The adaptive adjustment pressure roller also includes a main roller 4, and support blocks 41 are fixedly installed at both ends of the main roller 4. The support blocks 41 and the plug-in slots 35 are plugged into each other, so that the two ends of the main roller 4 are plugged and limited on the support shaft 31. A second limiting slot 42 is provided on the support block 41. After the support block 41 is plugged into the plug-in slot 35 of the support shaft 31, the first limiting slot 33 and the second limiting slot 42 are connected. A third limiting slot 43 and a positioning hole 44 are provided on the support block 41. When the lever 37 moves into the second guide groove 14, the upper and lower ports of the plug-in groove 35 are opened. At this time, the support block 41 can be inserted into the plug-in groove 35, thereby realizing the plug-in connection between the main roller 4 and the support shaft 31. When the lever 37 moves from the second guide groove 14 through the reversing groove 13 to the first guide groove 12, it will drive the support tube 36 and the limiting tube 32 to move toward the side of the main roller 4. The inner wall of the limiting tube 32 fits with the upper and lower ends of the support block 41 after insertion, thereby limiting the main roller 4 and ensuring the stability of the connection between the main roller 4 and the support shaft 31.

[0043] Reference Figure 1 、 Figure 9 and Figure 10 The roller frame 1 is rotatably connected to a grinding roller 6, which is located directly below the main roller 4. Cardboard and other products pass through the roller gap between the main roller 4 and the grinding roller 6. Under the pressure of the main roller 4, the pattern on the main roller 4 is imprinted on the surface of the conveyed product. The main roller 4 and the grinding roller 6 are powered by a transmission assembly 7.

[0044] The transmission assembly 7 includes two groups of first bevel teeth 71 and a telescopic shaft. The two groups of first bevel teeth 71 are respectively installed on the end of the support shaft 31 and the grinding roller 6. The telescopic shaft includes a slidingly connected sleeve 72 and a shaft rod 73. The sleeve 72 is rotatably connected to the roller frame 1, and the shaft rod 73 is rotatably connected to the slider 25. Second bevel teeth 74 are fixedly installed on the sleeve 72 and the shaft rod 73. The second bevel teeth 74 are engaged with the corresponding first bevel teeth 71 for transmission. When the support shaft 31 drives the first bevel gear 71 at its end to rotate, the meshing transmission of the first bevel gear 71 and the second bevel gear 74 drives the telescopic shaft to rotate, and again drives the grinding roller 6 to rotate through the meshing transmission of the bevel gear, thereby realizing the synchronous rotation of the main roller 4 and the grinding roller 6, ensuring that the conveying step distance of the main roller 4 and the grinding roller 6 is consistent when the product is embossed and conveyed, reducing the risk of embossing dislocation due to asynchronous product transmission, and improving the embossing quality. The telescopic shaft can be telescopically adjusted. When transmission is required, it can effectively ensure the stability of the transmission, and effectively solve the problem of difficulty in synchronous transmission after the main roller 4 and the grinding roller 6 adjust the roller spacing.

[0045] Reference Figure 1 、 Figure 11 and Figure 12The adaptive adjustment pressure roller also includes a roller changing assembly 8, which includes two groups of sleeves 81 sleeved on the grinding roller 6 and two groups of rotating frames 82 fixedly mounted on the sleeves 81. The sleeves 81 are rotatably connected to the roller frame 1, and the grinding roller 6 passes through the sleeves 81 and does not contact the sleeves 81. The two groups of rotating frames 82 are symmetrical about the axis of the sleeves 81, that is, one group of rotating frames 82 can be rotated 180 degrees around the axis of the sleeves 81 to coincide with the other group of rotating frames 82. Two groups of fourth limiting grooves 83 are opened on the rotating frame 82. The width of the fourth limiting groove 83 is equal to the width of the support block 41, so that the support block 41 can be stably inserted and limited in the fourth limiting groove 83 to prevent the main roller 4 from rotating on the rotating frame 82. A stop block 84 is fixedly installed in the fourth limiting groove 83. The stop block 84 is plugged into and matched with the third limit groove 43, thereby limiting the axial position of the main roller 4. The limit rod 85 is slidably connected to the sleeve 81. After the support block 41 is plugged into and limited by the fourth limit groove 83, the positioning hole 44 and the limit rod 85 are coaxial, and the limit rod 85 is inserted into the positioning hole 44, thereby fixing the support block 41 on the rotating frame 82; a first elastic member 86 is mounted on the limit rod 85, one end of the first elastic member 86 is fixedly connected to the rotating frame 82, and the other end is fixedly connected to the limit rod 85, and a first electromagnet 87 is fixedly installed on one end of the limit rod 85, and a second electromagnet 88 is fixedly installed on the rotating frame 82. The first elastic member 86 is used to push the first electromagnet 87 to move away from the rotating frame 82 until the maximum limit position. When the first electromagnet 87 and the second electromagnet 88 are supplied with current in the same direction, they attract each other, thereby compressing the first elastic member 86. At this time, the limit rod 85 is inserted into the fourth limit groove 83. When the first electromagnet 87 and the second electromagnet 88 are supplied with current in the opposite direction, they repel each other. At this time, the first elastic member 86 rebounds, and the end of the limit rod 85 moves from the fourth limit groove 83 to the rotating frame 82.

[0046] Reference Figure 1 and Figure 11 A sleeve 81 is connected to the output end of a drive assembly 9. The drive assembly 9 includes a second motor 91 fixedly mounted on the roller frame 1 and a first gear 92 fixedly mounted on the sleeve 81. A second gear 93 is fixedly mounted on the output end of the second motor 91, and the second gear 93 meshes with the first gear 92 for transmission. The drive assembly 9 controls the rotation of the sleeve 81, thereby switching the positions of the two sets of rotating frames 82, thereby exchanging the positions of the main rollers 4 on the two sleeves 81.

[0047] Reference Figure 10A displacement sensor 10 is fixedly mounted on the slider 25 on which the transmission assembly 7 is installed. The displacement sensor 10 is used to measure the distance between the main roller 4 and the grinding roller 6. Measuring the roller spacing by using a sensor is an existing technology and will not be described here. The roller spacing is measured by the displacement sensor 10. After the product thickness and pre-pressing thickness are input on the operating table, the lifting assembly 2 can control the main roller 4 to rise and fall autonomously, thereby adaptively adjusting the working distance between the main roller 4 and the grinding roller 6.

[0048] A fixed disk 15 is fixedly mounted on the support shaft 31, and a detection hole is opened on the fixed disk 15. A grating sensor 16 is fixedly mounted on the slider 25, and the transmitter and receiver of the grating sensor 16 are distributed on both sides of the detection hole. When the fixed disk 15 rotates and the grating sensor 16 detects the detection hole of the fixed disk 15, the output end of the first motor 5 stops driving the support shaft 31 to rotate. At this time, the plug-in slot 35 on the support shaft 31 is in a vertical state, which is convenient for the subsequent insertion of the support block 41 of the main roller 4 to be installed and the plug-in slot 35.

[0049] Reference Figure 10 As shown, a stop hole 61 is provided on the rolling roller 6, a positioning rod 17 is slidably connected to the roller frame 1, a second elastic member 18 is mounted on the positioning rod 17, one end of the second elastic member 18 is fixedly connected to the roller frame 1, and the other end is fixedly connected to the positioning rod 17, a third electromagnet 19 is fixedly installed on the positioning rod 17, and a fourth electromagnet 110 is fixedly installed on the roller frame 1.

[0050] When the grating sensor 16 detects the detection hole of the fixed disk 15, the positioning rod 17 is coaxial with the anti-rotation hole 61. After the third electromagnet 19 and the fourth electromagnet 110 are energized with current in the same direction, the third electromagnet 19 moves toward the fourth electromagnet 110, the second elastic member 18 is compressed, and the positioning rod 17 is inserted into the anti-rotation hole 61 to limit the position, thereby fixing the roller 6 and preventing the transmission assembly 7 and the roller 6 from rotating during roller replacement. After the third electromagnet 19 and the fourth electromagnet 110 are energized with current in the opposite direction, the second elastic member 18 gradually expands, and the positioning rod 17 disengages from the anti-rotation hole 61, thereby releasing the limit on the roller 6. It should be noted that when the third electromagnet 19 and the fourth electromagnet 110 are not in operation, the positioning rod 17 is pushed up by the elastic force of the second elastic member 18 and does not contact the roller 6, thus preventing interference when the roller 6 rotates.

[0051] Working Principle: Product thickness and pre-press thickness are input via the console. The output end of the hydraulic cylinder 21 drives the lifting plate 22, lifting rod 23, slider 25, rotating assembly 3, main roller 4, and first motor 5 up and down. The working distance between the main roller 4 and the grinding roller 6 is adjusted based on the measured value feedback obtained by the displacement sensor 10. The telescopic shaft is extended and retracted by the slider 25. It should be noted that the adjustable working range of the main roller 4 and the grinding roller 6 does not exceed the height of the first guide groove 12, ensuring the stable positioning of the support block 41 by the limit tube 32.

[0052] The output end of the first motor 5 drives the support shaft 31 to rotate, and then drives the main roller 4 inserted and limited on the support shaft 31 and the support shaft 31 on the other side to rotate. Through the meshing transmission of the first bevel gear 71 and the second bevel gear 74 and the transmission of the shaft 73 and the sleeve 72, the grinding roller 6 is driven to rotate synchronously with the main roller 4, and the product is sent between the grinding roller 6 and the main roller 4, and the product is embossed under the action of roller pressure.

[0053] For composite paper products of varying thicknesses, the set pressure range of the pressure sensor 24 is input on the operating console. When the pressure sensor 24 detects that the pressure of the main roller 4 and the support shaft 31 exceeds the set pressure range, the output end of the hydraulic cylinder 21 is further raised and lowered to control the main roller 4 to rise or fall. By changing the spacing between the main roller 4 and the grinding roller 6, adaptive adjustment of the embossing pressure is achieved.

[0054] When the pattern needs to be changed and the main roller 4 needs to be replaced, the new main roller 4 is inserted into the fourth limiting groove 83 of the rotating frame 82 on the lower side through the support block 41, and the stop block 84 is inserted into the third limiting groove 43 for limiting. The first electromagnet 87 and the second electromagnet 88 on the lower side are connected to the same direction of current to attract each other, the first elastic member 86 is compressed, and the limiting rod 85 is inserted into the positioning hole 44 of the support block 41 to fix the main roller 4.

[0055] The output end of the first motor 5 drives the rotating assembly 3 and the main roller 4 to be replaced to rotate until the receiver of the grating sensor 16 receives the signal of the transmitter, and the output end of the first motor 5 stops rotating. At this time, the plug-in slot 35 is in a vertical state; the output end of the hydraulic cylinder 21 drives the lifting plate 22, the lifting rod 23, the slider 25, the rotating assembly 3, the main roller 4 and the first motor 5 to rise, and the shift rod 37 moves from the first guide groove 12 into the reversing groove 13. When the shift rod 37 moves in the reversing groove 13, it drives the support tube 36 and the limiting tube 32 to move away from one side of the main roller 4. When the shift rod 37 moves to the connecting point of the reversing groove 13 and the second guide groove 14, the limiting tube 32 disengages from the limit of the support block 41, and the support block 41 is still inserted in the plug-in slot 35 and is carried by the support shaft 31, so that the main roller 4 remains stable and does not fall. The support method refers to Figure 7 The support block 41 is located below the fourth limiting groove 83 of the upper rotating frame 82 .

[0056] As the output end of the hydraulic cylinder 21 continues its return stroke, the lever 37 moves into the second guide groove 14. At this point, the support block 41 is inserted into the fourth limiting groove 83 of the upper rotating frame 82, and the stop block 84 is inserted into the third limiting groove 43. A positive current is applied to the first and second electromagnets 87 and 88 corresponding to the upper rotating frame 82, causing them to attract each other, causing the limiting rod 85 to be inserted into the positioning hole 44 of the main roller 4 to be replaced, thereby securing the main roller 4 to be replaced on the upper rotating frame 82. The output end of the hydraulic cylinder 21 extends until the lever 37 moves to the connection point between the reversing groove 13 and the second guide groove 14, ensuring that the two sets of rotating frames 82 do not interfere with or collide with the support shaft 31 when changing positions. It should be noted that the lifting height and displacement of the rotating assembly 3 can be detected by a displacement sensor 10 or other positioning sensor. This is a prior art and will not be described in detail here.

[0057] The output end of the second motor 91 drives the second gear 93 to rotate, and through the meshing transmission of the first gear 92 and the second gear 93, the sleeve 81 and the rotating frame 82 are driven to rotate 180 degrees, so that the positions of the new and old main rollers 4 on the two sets of rotating frames 82 are interchanged; the output end of the hydraulic cylinder 21 drives the lifting plate 22, the lifting rod 23, the slider 25 and the rotating assembly 3 to rise, so that the support shaft 31 is plugged into the support block 41 of the new main roller 4. After the support block 41 is fully engaged with the plug-in slot 35, the first electromagnet 87 and the second electromagnet 88 are repelled by the reverse current, and the limit rod 85 disengages from the positioning hole 44 of the support block 41. At this time, the support block 41 of the main roller 4 is supported by the support shaft 31.

[0058] The output end of the hydraulic cylinder 21 drives the lifting plate 22, lifting rod 23, slider 25, rotating assembly 3, new main roller 4 and first motor 5 to descend, and the shifting rod 37 enters the first guide groove 12 from the second guide groove 14 through the reversing groove 13. During this process, the shifting rod 37 drives the support tube 36 and the limit tube 32 to move toward the side of the main roller 4. The limit tube 32 is inserted into the support block 41 for upper positioning, and the limit block 34 is inserted into the second limit groove 42 for position limiting, keeping the main roller 4 stably limited on the support shaft 31. After the main roller 4 is replaced, the third electromagnet 19 and the fourth electromagnet 110 are energized with reverse current to repel each other, causing the positioning rod 17 to disengage from the roller 6 and release the limit on the roller 6.

[0059] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An adaptively adjustable pressure roller for an embossing machine, characterized in that: It comprises a roller frame (1), a lifting assembly (2) is mounted on the roller frame (1), two sets of rotating assemblies (3) are mounted on the output end of the lifting assembly (2), and both ends of the main roller (4) are plugged into the corresponding rotating assemblies (3); The rotating assembly (3) includes a support shaft (31) rotatably connected to the output end of the lifting assembly (2); a roller (6) rotatably mounted on the roller frame (1) is transmission-connected to the support shaft (31) via a transmission assembly (7); a limiting tube (32) is slidably connected to the support shaft (31); a support tube (36) is rotatably connected to the limiting tube (32); the support tube (36) is slidably connected to the output end of the lifting assembly (2); and the support shaft (31) is driven by being connected to the output end of the first motor (5); The transmission assembly (7) comprises two sets of first bevel teeth (71), and the two sets of first bevel teeth (71) are respectively mounted on the end portions of the support shaft (31) and the roller (6); The telescopic shaft comprises a shaft sleeve (72) and a shaft rod (73) which are slidably connected to each other, the shaft sleeve (72) is rotatably connected to the roller frame (1), and the shaft rod (73) is rotatably connected to the slider (25). The shaft sleeve (72) and the shaft rod (73) are both fixedly mounted with a second bevel gear (74), and the second bevel gear (74) is meshed with the first bevel gear (71) for transmission. A fixed plate (11) is fixedly mounted on the roller frame (1), and a shifting rod (37) fixedly mounted on the support tube (36) is inserted into a track groove of the fixed plate (11) for movement; the track groove comprises a first guide groove (12), a reversing groove (13), and a second guide groove (14) which are connected in sequence; A roller changing assembly (8) includes two sets of sleeves (81) sleeved on the roller (6) and two sets of rotating frames (82) fixedly mounted on the sleeves (81), wherein the sleeves (81) are rotatably connected to the roller frames (1), and the sleeves (81) are driven by being connected to the output end of the driving assembly (9); Support blocks (41) are fixedly installed at both ends of the main roller (4), and the support blocks (41) are plugged into two groups of fourth limiting grooves (83) provided on the rotating frame (82). Stop blocks (84) fixedly installed in the fourth limiting grooves (83) are plugged into the support blocks (41) for limiting the axial position of the support blocks (41). A limiting rod (85) is slidably connected to the sleeve (81) for inserting into the support block (41) to fix the main roller (4). The output end of the lifting assembly (2) drives the rotating assembly (3) to move up and down, and can adjust the working distance between the main roller (4) and the grinding roller (6). The transmission assembly (7) is driven by the telescopic shaft, so that the main roller (4) and the grinding roller (6) can maintain synchronous transmission when the distance between them changes.

2. The self-adaptive pressure roller for an embossing machine according to claim 1, characterized in that: The lifting assembly (2) includes a hydraulic cylinder (21) mounted on a roller frame (1), the lifting frame is fixedly mounted on the output end of the hydraulic cylinder (21), a slider (25) slidably connected to the roller frame (1) is mounted on the bottom of the lifting frame, and a plurality of support rods (26) are fixedly mounted on the slider (25); The support tube (36) is slidably connected to the corresponding support rod (26), and the support shaft (31) is rotationally connected to the slider (25).

3. The self-adaptive pressure roller for an embossing machine according to claim 1, characterized in that: The first guide groove (12) and the second guide groove (14) are not collinear, and the shifting rod (37) is inserted into the first guide groove (12), the reversing groove (13) or the second guide groove (14) and moves.

4. The self-adaptive pressure roller for an embossing machine according to claim 1, characterized in that: The support block (41) is plugged into and matched with the end plug-in groove (35) provided on the support shaft (31), so that the two ends of the main roller (4) are plugged and limited on the support shaft (31).

5. The self-adaptive pressure roller for an embossing machine according to claim 1, characterized in that: A first electromagnet (87) is fixedly mounted on one end of the limiting rod (85), a second electromagnet (88) is fixedly mounted on the rotating frame (82), and a first elastic member (86) for pushing up the first electromagnet (87) is mounted on the limiting rod (85).

6. The self-adaptive pressure roller for an embossing machine according to claim 2, characterized in that: A displacement sensor (10) for distance measurement is fixedly mounted on the slider (25), and the slider (25) is connected to the lifting frame via a pressure sensor (24).

7. The self-adaptive pressure roller for an embossing machine according to claim 2, characterized in that: A fixed disk (15) is fixedly mounted on the support shaft (31), a detection hole is opened on the fixed disk (15), and a grating sensor (16) is fixedly mounted on the slider (25).

8. The self-adapting pressure roller for an embossing machine according to any one of claims 1 to 7, characterized in that: The roller (6) is provided with a rotation-stopping hole (61), the roller frame (1) is slidably connected with a positioning rod (17), a third electromagnet (19) is fixedly mounted on the positioning rod (17), a fourth electromagnet (110) is fixedly mounted on the roller frame (1), and a second elastic member (18) for pushing the third electromagnet (19) is mounted on the positioning rod (17).

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