Full-automatic plate-free die cutting machine

Abstract

The invention relates to the technical field of paperboard processing equipment, and particularly discloses a full-automatic board-free die-cutting machine which can be used for producing and processing paperboards, and scratches or notches in specific shapes are pressed on the paperboards by using the full-automatic board-free die-cutting machine, so that the separation of finished products and waste materials is realized, the processing procedures of die cutting, indentation and the like are completed, and the production efficiency is improved. Comprising a support, a die cutting roller rotationally arranged on the support, a plurality of grooving mechanisms arranged in the axial direction of the die cutting roller, a grooving distance adjusting mechanism and a grooving distance control mechanism. When a paperboard passes through the die cutting roller, the rotating die cutting roller drives the slotting mechanism to cut and slot the paperboard. The board height of the formed paperboard is determined by the distance between a first grooving cutter and a second grooving cutter in the grooving mechanism, and corresponding adjustment can be conducted according to the board heights of paperboards of different models. The grooving spacing adjusting mechanism is automatically controlled through the grooving spacing control mechanism, automatic adjustment of the grooving spacing is achieved, manual operation is not needed, and the control precision is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paperboard processing equipment, and particularly relates to a full-automatic plate-free die-cutting machine. BACKGROUND

[0002] The die-cutting machine, also known as a cutting machine, is a key post-processing equipment in the paperboard packaging and printing industry. Its core function is to apply pressure to the printed matter through the pressure plate, and to press a specific shape of a scratch or a cut on the paperboard by using a preset die, so as to separate the finished product from the waste and complete the die-cutting and indentation processing procedures.

[0003] In the prior art, in order to meet the processing needs of paperboards of different sizes, the cutting assembly on the die-cutting roller needs to be able to adjust the axial position. For example, a paperboard cutting mechanism disclosed in Chinese Patent No. CN208914207U shows a complex transmission system composed of a transverse helical rack, a spline shaft, a motor and other components to realize the transverse movement and positioning of the cutting knife. Although this kind of mechanism can realize the adjustment of the position, its structure is usually relatively complicated.

[0004] However, for the slotting operation, the width of the slotting is usually determined by the distance between the two cutting knives on the same knife seat. At present, the adjustment of this distance is mostly completed manually by artificial. This way not only can not guarantee the adjustment accuracy and is prone to errors, but also is low in efficiency and cannot meet the modern high-speed and automated production needs.

[0005] Therefore, the above problems need to be solved. SUMMARY

[0006] In view of the above shortcomings of the prior art, the purpose of the present application is to provide a full-automatic plate-free die-cutting machine to solve the above problems.

[0007] A full-automatic plate-free die-cutting machine, comprising: a support; a die-cutting roller rotatably arranged on the support; a plurality of slotting mechanisms arranged along the axial direction of the die-cutting roller, each of the slotting mechanisms comprising a slotting knife seat sleeved on the die-cutting roller, and a first slotting knife and a second slotting knife arranged on the slotting knife seat, the first slotting knife and the second slotting knife being in an arc structure, the first slotting knife being fixed to the slotting knife seat, and the second slotting knife being slidably arranged on the slotting knife seat, so that the distance between the first slotting knife and the second slotting knife is adjustable; The slotting distance adjusting mechanism comprises a first arc-shaped internal gear rack arranged to slide around the center shaft of the slotting cutter holder, a first adjusting gear wheel engaged with the arc-shaped internal gear rack, and a spline shaft connected with all the first adjusting gear wheels in series, and the first arc-shaped internal gear rack is fixedly connected with the second slotting cutter; The slotting distance control mechanism comprises a first motor fixed to the support, a belt transmission assembly drivingly connected with the driving shaft of the first motor, and a planetary gear set drivingly connected with the belt transmission assembly, and the planetary gear set is drivingly connected with the spline shaft.

[0008] Specifically, the first motor is a speed-reducing motor; The belt transmission assembly comprises a driving pulley arranged on the output shaft of the first motor, a driven pulley connected with the driving pulley through a belt, a first transmission shaft coaxially connected with the driven pulley, and a first adjusting gear wheel arranged at one end of the first transmission shaft; The other end of the first transmission shaft is provided with an encoder for detecting the rotation angle thereof; The planetary gear set comprises: A second adjusting gear wheel is arranged at one end of the die cutting roller through a first bearing, the second adjusting gear wheel is engaged with the transmission gear wheel at the end of the spline shaft, and the second adjusting gear wheel is provided with an extension extending in the axial direction; A third adjusting gear wheel is arranged at one end of the die cutting roller, and the third adjusting gear wheel is fixedly connected with the second adjusting gear wheel in the axial direction; A first bearing seat is fixed to the support, and a second bearing is arranged in the first bearing seat, and the inner ring of the second bearing is sleeved on the extension; A first sun gear is arranged at one end of the die cutting roller through a third bearing; A first overbridge gear wheel is arranged on the support through a first overbridge shaft, and the first overbridge gear wheel is engaged with the third adjusting gear wheel and the first sun gear on the two sides in the axial direction, respectively; A first gear disc gear wheel is arranged at one end of the die cutting roller through a fourth bearing, and the first gear disc gear wheel is engaged with the first adjusting gear wheel; A plurality of first planetary gear wheels are arranged on the first gear disc gear wheel through a fifth bearing, the first planetary gear wheels are engaged with the first sun gear and are distributed in the circumferential direction around the center shaft of the first sun gear; A second sun gear is arranged at one end of the die cutting roller; A plurality of second planetary gear wheels are arranged on the first gear disc gear wheel through a sixth bearing, the second planetary gear wheels are engaged with the second sun gear and are distributed in the circumferential direction around the center shaft of the second sun gear.

[0009] Specifically, the fully automatic plateless die-cutting machine also includes: The corner cutting mechanism includes a corner cutting blade holder sleeved on the die-cutting roller, and a first corner cutting blade, a second corner cutting blade, a third corner cutting blade bent and connected to one end of the first corner cutting blade, and a fourth corner cutting blade bent and connected to one end of the second corner cutting blade, all disposed on the corner cutting blade holder. The first corner cutting blade and the second corner cutting blade have an arc-shaped structure, while the third corner cutting blade and the fourth corner cutting blade have a rectangular structure. The first corner cutting blade is fixed to the corner cutting blade holder, and the second corner cutting blade is slidably disposed on the corner cutting blade holder so that the distance between the third corner cutting blade and the fourth corner cutting blade is adjustable. The chamfering distance adjustment mechanism includes a second arc-shaped internal rack that is slidably arranged around the central axis of the chamfering tool holder, a second adjusting gear that meshes with the second arc-shaped internal rack, and the spline shaft that also engages with the keyway of the second adjusting gear.

[0010] Specifically, the fully automatic plateless die-cutting machine also includes: The trimming mechanism includes a trimming knife holder sleeved on the die-cutting roller and an annular trimming blade fixed on the trimming knife holder.

[0011] Specifically, the fully automatic plateless die-cutting machine also includes: A rubber pad roller is mounted on the bracket, and the distance between it and the die-cutting roller is adjustable; Multiple creasing mechanisms are arranged sequentially along the paper feeding direction of the die-cutting roller, and each creasing mechanism includes an upper creasing shaft and a lower creasing shaft with adjustable spacing. A waste paper cutting mechanism is disposed on at least one of the lower indentation shafts and located in front of the trimming mechanism. The waste paper cutting mechanism includes a paper guide ring sleeved and fixed to the lower indentation shaft, and paper cutting blades distributed circumferentially on the outside of the paper guide ring.

[0012] Specifically, it also includes an axial spacing adjustment mechanism, which comprises: A first and a second helical toothed rack fixed to the bracket and extending along the axial direction of the die-cutting roller; The spacing adjustment drive assembly is provided on the grooving cutter holder, the corner cutting cutter holder, and the trimming cutter holder. The spacing adjustment drive assembly includes a lower push plate, two levers fixed to the upper sides of the lower push plate, two bearing seats fixed to the lower sides of the lower push plate, a seventh bearing on the bearing seats, a helical gear shaft passing through the two seventh bearings, a first helical tooth and a second helical tooth fixed to both ends of the helical gear shaft, a motor seat fixed to one of the bearing seats, a second motor fixed to the motor seat, and a third helical tooth connected to the output shaft of the second motor and meshing with the first helical tooth. The first helical tooth meshes with the first helical gear rack, and the second helical tooth meshes with the second helical gear rack. The grooving cutter holder, the corner cutting cutter holder, and the trimming cutter holder are all provided with annular limiting grooves for engaging the levers.

[0013] Specifically, the spacing adjustment drive assembly further includes a slide rail fixed to the bracket and a slider fixed to the push plate and slidingly engaged with the slide rail.

[0014] Specifically, the fully automatic plateless die-cutting machine also includes an initial phase adjustment mechanism, which includes: A third motor fixed to the bracket; The first motor gear is mounted on the output shaft of the third motor; A planetary gear disk is located at the other end of the die-cutting roller, and the planetary gear disk meshes with the first motor gear.

[0015] Specifically, the fully automatic plateless die-cutting machine also includes an initial phase adjustment mechanism, which includes: The large gear located at the end of the die-cutting roller is rotated via the eighth bearing; A third sun gear, sleeved on the end of the die-cutting roller and fixedly connected to the large gear; The third planetary gear, which is mounted on the planetary gear disk, rotates via a gear shaft. The third planetary gear meshes with the third sun gear and is circumferentially distributed around the central axis of the third sun gear. The fourth sun gear is fixed to the end of the die-cutting roller; A fourth planetary gear is fixed to one end of the gear shaft. The fourth planetary gear meshes with the fourth sun gear and is circumferentially distributed around the central axis of the fourth sun gear. A lower shaft gear is disposed at one end of the lower shaft of the indentation; A second bridge gear, rotatably mounted on the bracket via a second bridge shaft, is connected to the large gear and meshes with the lower shaft gear. An upper shaft gear is disposed at one end of the upper shaft of the indentation and meshes with the lower shaft gear.

[0016] Specifically, the fully automatic plateless die-cutting machine also includes an eccentric transmission mechanism, which includes: A fourth motor fixed to the bracket; The second motor gear is mounted on the output shaft of the fourth motor; A gear seat fitted onto one end of the rubber pad roller; An eccentric gear is mounted on the gear seat; The third bridge gear, which is rotatably mounted on the bracket via the third bridge shaft, meshes with both the second motor gear and the eccentric gear. A fifth motor is fixed to the gear seat, and the fifth motor is connected to the rubber pad roller via a transmission.

[0017] Specifically, the fully automatic plateless die-cutting machine also includes a paper shredder conveying mechanism, which includes: A belt conveyor device located below the die-cutting roller; A left and right protective cover are respectively provided on both sides of the conveying direction of the belt conveyor. Both the left and right protective covers are provided with guide structures that are inclined towards the upper end face of the belt conveyor.

[0018] The beneficial effects of this invention are: This application discloses a fully automatic plateless die-cutting machine, which can be used for paperboard production and processing. The machine presses specific shapes of scratches or cuts onto the paperboard, thereby separating finished products from waste materials and completing die-cutting, creasing, and other processing steps. It includes a support frame, a die-cutting roller rotatably mounted on the support frame, multiple grooving mechanisms arranged along the axial direction of the die-cutting roller, a grooving spacing adjustment mechanism, and a grooving spacing control mechanism. When the paperboard passes through the die-cutting roller, the rotating roller drives the grooving mechanisms to cut and groove the paperboard. The distance between the first and second grooving blades in the grooving mechanism determines the height of the formed paperboard, which can be adjusted according to the height of different paperboard models. The grooving spacing control mechanism automatically controls the grooving spacing adjustment mechanism, achieving automatic adjustment of the grooving spacing without manual operation and with high control precision. Attached Figure Description

[0019] Figure 1 This is a plan view of the fully automatic plateless die-cutting machine of this application; Figure 2 For the three-dimensional fully automatic plateless die-cutting machine of this application Figure 1 ; Figure 3 for Figure 2 Enlarged view of section A; Figure 4 For the three-dimensional fully automatic plateless die-cutting machine of this application Figure 2 ; Figure 5 for Figure 4 Enlarged view of section B; Figure 6 This is a front view of the fully automatic plateless die-cutting machine of this application; Figure 7 This is a rear view of the fully automatic plateless die-cutting machine of this application; Figure 8 This is a right view of the fully automatic plateless die-cutting machine of this application; Figure 9 This is a perspective view of the grooving mechanism, the corner cutting mechanism, and the trimming mechanism of this application; Figure 10 for Figure 9 Enlarged view of section C; Figure 11 This is a perspective view of the grooving mechanism and the corner-cutting mechanism of this application; Figure 12 A perspective view of the trimming mechanism of this application; Figure 13 This is a perspective view of the trimming mechanism and the waste paper cutting mechanism of this application; Figure 14 This is a perspective view of the spacing adjustment drive assembly and the die-cutting roller of this application; Figure 15 This is a perspective view of the initial phase adjustment mechanism of this application; Figure 16 This is a schematic diagram of the initial phase adjustment mechanism of this application; Figure 17 This is a perspective view of the eccentric transmission mechanism of this application; Figure 18 This is a schematic diagram of the cardboard structure. The dotted lines in the diagram refer to the die-cutting lines.

[0020] The attached figures are labeled as follows: bracket 10, die-cutting roller 20, grooving mechanism 30, grooving cutter holder 31, first grooving cutter 32, second grooving cutter 33, grooving spacing adjustment mechanism 40, first arc-shaped internal rack 41, first adjusting gear 42, spline shaft 43, transmission gear 431, grooving spacing control mechanism 50, first motor 51, belt drive assembly 52, planetary gear set 53, driving pulley 521, belt 522, driven pulley 523, first transmission shaft 524, first adjustment gear 525, encoder 526, second adjustment gear 531, third adjustment gear 532, First bearing housing; 533, First sun gear; 534, First bridge gear; 535, First gear disc gear; 536, First planetary gear; 537, Second sun gear; 538, Second planetary gear; 539, Cornering mechanism; 60, Cornering cutter holder; 61, First cornering blade; 62, Second cornering blade; 63, Third cornering blade; 64, Fourth cornering blade; 65, Cornering distance adjustment mechanism; 70, Second arc-shaped internal rack; 71, Second adjusting gear; 72, Trimming mechanism; 80, Trimming cutter holder; 81, Annular trimming blade; 82, Rubber pad roller; 90, Indentation mechanism; 100, Pressing... Upper indentation shaft 101, lower indentation shaft 102, waste paper cutting mechanism 110, paper guide ring 111, paper cutter 112, axial spacing adjustment mechanism 120, first helical rack 121, second helical rack 122, spacing adjustment drive assembly 130, lower push plate 131, lever 132, bearing seat 133, seventh bearing 134, helical gear shaft 135, first helical gear 136, second helical gear 137, motor seat 138, second motor 139, third helical gear 1310, initial phase adjustment mechanism 140, third motor 141, first motor gear 142, planetary gear Wheel gear 143, initial phase adjustment mechanism 180, large gear 181, third sun gear 182, third planetary gear 183, fourth sun gear 184, fourth planetary gear 185, lower shaft gear 186, second bridge gear 187, upper shaft gear 188, eccentric transmission mechanism 150, fourth motor 151, second motor gear 152, gear seat 153, eccentric gear 154, third bridge gear 155, fifth motor 156, shredded paper conveying mechanism 160, belt conveyor device 161, left guard 162, right guard 163, cardboard 170. Detailed Implementation

[0021] This invention provides a fully automatic plateless die-cutting machine. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0023] Please refer to Figures 1 to 18 This embodiment of a fully automatic boardless die-cutting machine can be used for the production and processing of cardboard 170. The fully automatic boardless die-cutting machine presses out scratches or cuts of specific shapes on the cardboard 170, thereby realizing the separation of finished products and waste materials, and completing processing steps such as die-cutting and creasing. The fully automatic boardless die-cutting machine includes a support 10, a die-cutting roller 20 rotatably arranged on the support 10, a plurality of grooving mechanisms 30 arranged along the axial direction of the die-cutting roller 20, a grooving spacing adjustment mechanism 40, and a grooving spacing control mechanism 50.

[0024] like Figure 1 , Figure 10 and Figure 11 As shown, when the cardboard 170 passes through the die-cutting roller 20, the rotating die-cutting roller 20 drives the grooving mechanism 30 to cut and groove the cardboard 170. The distance between the first grooving blade 32 and the second grooving blade 33 in the grooving mechanism 30 determines the height of the cardboard 170 after forming, and can be adjusted accordingly based on the height of different models of cardboard 170. This application automatically controls the grooving spacing adjustment mechanism 40 through the grooving spacing control mechanism 50, realizing automatic adjustment of the grooving spacing without manual operation and with high control precision.

[0025] like Figure 10 and Figure 11 As shown, each grooving mechanism 30 includes a grooving blade holder 31 sleeved on the die-cutting roller 20, and a first grooving blade 32 and a second grooving blade 33 disposed on the grooving blade holder 31. The first grooving blade 32 and the second grooving blade 33 have an arc-shaped structure. The first grooving blade 32 is fixed to the grooving blade holder 31, and the second grooving blade 33 is slidably disposed on the grooving blade holder 31 so that the distance between the first grooving blade 32 and the second grooving blade 33 is adjustable. Through this structural design, the position of the second grooving blade 33 can be adjusted, thereby changing the distance between the first grooving blade 32 and the second grooving blade 33 to adapt to the board height requirements of different cardboard 170.

[0026] like Figure 10As shown, the grooving spacing adjustment mechanism 40 includes a first arc-shaped internal rack 41 slidably arranged around the central axis of the grooving cutter holder 31, a first adjusting gear 42 meshing with the first arc-shaped internal rack 41, and a splined shaft 43 connecting all the first adjusting gears 42 in series. The first arc-shaped internal rack 41 is fixedly connected to the second grooving cutter 33. All the first adjusting gears 42 are linked by the splined shaft 43. When the splined shaft 43 rotates, all the first adjusting gears 42 rotate synchronously, causing the first arc-shaped internal rack 41 to slide and adjust its position, thereby pushing the second grooving cutter 33 to move, thus adjusting the spacing between the first grooving cutter 32 and the second grooving cutter 33. The structure is ingeniously designed.

[0027] like Figure 2 and Figure 3 As shown, the slotting spacing control mechanism 50 includes a first motor 51 fixed to the bracket 10, a belt drive assembly 52 driven by the drive shaft of the first motor 51, and a planetary gear set 53 driven by the belt drive assembly 52. ​​The planetary gear set 53 is driven by the spline shaft 43. Its working process is as follows: the first motor 51 drives the belt drive assembly 52 to operate, the belt drive assembly 52 transmits power to the planetary gear set 53, and the planetary gear set 53 ultimately drives the spline shaft 43 to rotate, thereby achieving automatic control of the slotting spacing.

[0028] Furthermore, the first motor 51 in this embodiment is a geared motor; the geared motor can provide stable and adjustable speed and torque output, ensuring that the slot spacing adjustment process is smooth and accurate. Please refer to Figure 3 The belt drive assembly 52 includes a drive pulley 521 mounted on the output shaft of the first motor 51, a driven pulley 523 connected to the drive pulley 521 via a belt 522, a first drive shaft 524 coaxially connected to the driven pulley 523, and a first adjusting gear 525 mounted on one end of the first drive shaft 524. The belt drive assembly 52 operates as follows: the first motor 51 drives the drive pulley 521 to rotate, and the power is transmitted to the driven pulley 523 via the belt 522, which drives the first drive shaft 524 and the first adjusting gear 525 fixed thereon to rotate synchronously, thus realizing the efficient and smooth transmission of power from the motor to the gear. Furthermore, the other end of the first drive shaft 524 is provided with an encoder 526 for detecting its rotation angle; the encoder 526 can monitor the rotation angle of the first drive shaft 524 in real time and feed the signal back to the control system, thereby realizing precise control of the rotation position of the spline shaft 43 and ensuring high precision of the slot spacing adjustment. Please refer to Figure 3The planetary gear set 53 includes a second adjusting gear 531, a third adjusting gear 532, a first bearing housing 533, a first sun gear 534, a first bridge gear 535, a first gear disc gear 536, multiple first planetary gears 537, a second sun gear 538, and multiple second planetary gears 539. The second adjusting gear 531 is rotatably mounted on one end of the die-cutting roller 20 via a first bearing, and meshes with a transmission gear 431 at the end of the splined shaft 43. The second adjusting gear 531 has an axially extending extension. The third adjusting gear 532 is rotatably mounted on one end of the die-cutting roller 20, and is axially fixedly connected to the second adjusting gear 531. The first bearing housing 533 is fixed on the bracket 10, and a second bearing is provided inside the first bearing housing 533. The inner ring of the second bearing is fitted into the extension. The first sun gear 534 is rotatably mounted on the die-cutting roller 20 via a third bearing. At one end of the cutting roller 20, a first bridge gear 535 is rotatably mounted on the support 10 via a first bridge shaft. The first bridge gear 535 meshes with the third adjusting gear 532 and the first sun gear 534 on both sides along the axial direction, respectively. A first gear disk gear 536 is rotatably mounted on one end of the die-cutting roller 20 via a fourth bearing. The first gear disk gear 536 meshes with the first adjusting gear 525. Multiple first planetary gears 537 are rotatably mounted on the first gear disk gear 536 via a fifth bearing. The first planetary gears 537 mesh with the first sun gear 534 and are circumferentially distributed around the central axis of the first sun gear 534. A second sun gear 538 is rotatably mounted on the die-cutting roller 20. Multiple second planetary gears 539 are rotatably mounted on the first gear disk gear 536 via a sixth bearing. The second planetary gears 539 mesh with the second sun gear 538 and are circumferentially distributed around the central axis of the second sun gear 538.

[0029] The operation of the planetary gear set 53 is as follows: The first adjusting gear 525 drives the first gear disk gear 536 to rotate. The first planetary gear 537, fixed on the first gear disk gear 536, both revolves with the first gear disk gear 536 and meshes with the rotating first sun gear 534 to generate its own rotation. Under the meshing action of the first bridge gear 535, the third adjusting gear 532 is driven to rotate. The third adjusting gear 532 is axially fixedly connected to the second adjusting gear 531, thereby driving the second adjusting gear 531 to rotate. The second adjusting gear 531 meshes with the transmission gear 431 at the end of the spline shaft 43, driving the spline shaft 43 to rotate. The planetary gear set 53 converts the input of the first motor 51 into precise drive of the spline shaft 43, thereby controlling the slot spacing.

[0030] refer to Figure 9 and Figure 10The fully automatic plateless die-cutting machine also includes a corner cutting mechanism 60 and a corner cutting distance adjustment mechanism 70; wherein: the corner cutting mechanism 60 includes a corner cutting knife holder 61 sleeved on the die-cutting roller 20, and a first corner cutting blade 62, a second corner cutting blade 63, a third corner cutting blade 64 bent and connected to one end of the first corner cutting blade 62, and a fourth corner cutting blade 65 bent and connected to one end of the second corner cutting blade 63, the first corner cutting blade 62 and the second corner cutting blade 63 have an arc-shaped structure, and the third corner cutting blade 64 and the fourth corner cutting blade 65 have a rectangular structure. The first corner cutting blade 62 is fixed to the corner cutting knife holder 61, and the second corner cutting blade 63 is slidably disposed on the corner cutting knife holder 61 so that the distance between the third corner cutting blade 64 and the fourth corner cutting blade 65 is adjustable. The corner-cutting spacing adjustment mechanism 70 includes a second arc-shaped internal rack 71 slidably disposed around the central axis of the corner-cutting blade holder 61, and a second adjusting gear 72 meshing with the second arc-shaped internal rack 71. The spline shaft 43 also engages with the second adjusting gear 72 via a keyway. Its operation is as follows: when the spline shaft 43 rotates, it drives the second adjusting gear 72 of the corner-cutting mechanism 60 to rotate synchronously via the keyway connection. The second adjusting gear 72 drives the second arc-shaped internal rack 71, which in turn slides around the central axis of the corner-cutting blade holder 61. The second arc-shaped internal rack 71 then pushes the second corner-cutting blade 63 to move, thereby changing the spacing between the third corner-cutting blade 64 and the fourth corner-cutting blade 65. This achieves automatic and synchronous adjustment of the corner-cutting spacing without manual intervention, ensuring the consistency of the corner cuts for different specifications of cardboard 170.

[0031] The fully automatic boardless die-cutting machine also includes a trimming mechanism 80, which includes a trimming knife holder 81 sleeved on the die-cutting roller 20 and an annular trimming blade 82 fixed on the trimming knife holder 81. The annular trimming blade 82 continuously cuts off the waste edge on one side of the cardboard 170 during the die-cutting process to ensure that the finished product edge is neat. Please refer to Figure 1 The fully automatic plateless die-cutting machine also includes a rubber pad roller 90 and multiple creasing mechanisms 100; the rubber pad roller 90 is set on the bracket 10 and the distance between it and the die-cutting roller 20 is adjustable, providing necessary support and cushioning for die-cutting and creasing, protecting the cutter and ensuring clear creasing.

[0032] Multiple creasing mechanisms 100 are arranged sequentially along the paper feeding direction of the die-cutting roller 20. Each creasing mechanism 100 includes an upper creasing shaft 101 and a lower creasing shaft 102 with adjustable spacing. The operation process is as follows: the cardboard 170 passes through the pressing area between the upper creasing shaft 101 and the lower creasing shaft 102, and the creasing process is completed under pressure. By using multiple creasing mechanisms, creasing at different positions and depths can be completed to meet the needs of complex carton forming. Please refer to Figure 13The fully automatic plateless die-cutting machine also includes a waste paper cutting mechanism 110. The waste paper cutting mechanism 110 is disposed on at least one creasing lower shaft 102 and located in front of the trimming mechanism 80. The waste paper cutting mechanism 110 includes a paper guide ring 111 sleeved and fixed to the creasing lower shaft 102, and paper cutting blades 112 distributed circumferentially on the outside of the paper guide ring 111. Its operation process is as follows: During the conveying process, the cardboard 170 first passes through the waste paper cutting mechanism 110. The rotating creasing lower shaft 102 drives the paper cutting blades 112 to move, pre-cutting intermittent grooves in the waste edge area of ​​the cardboard 170. Then the cardboard 170 moves to the trimming mechanism 80, and the annular trimming blade 82 separates the waste edges on both sides from the finished product. Since there are already grooves on the waste edges, they naturally break into small segments at the grooves under the action of conveying tension. The waste generated after trimming is automatically broken into regular short segments, which greatly facilitates subsequent centralized collection and automated processing. It effectively avoids problems such as entanglement and jamming that may be caused by continuous long strips of waste edges in equipment operation, ensuring the continuity and stability of production.

[0033] Please refer to Figure 1 The fully automatic plateless die-cutting machine also includes an axial spacing adjustment mechanism 120, which includes a first helical rack 121 and a second helical rack 122 fixed to the bracket 10 and extending along the axial direction of the die-cutting roller 20, and a spacing adjustment drive assembly 130.

[0034] Please refer to Figure 14 The grooving tool holder 31, the corner cutting tool holder 61, and the trimming tool holder 81 are all equipped with a spacing adjustment drive assembly 130. The spacing adjustment drive assembly 130 includes a lower push plate 131, two levers 132 fixed to both sides of the upper end of the lower push plate 131, two bearing seats 133 fixed to both sides of the lower end of the lower push plate 131, a seventh bearing 134 set on the bearing seat 133, a helical gear shaft 135 passing through the two seventh bearings 134, and a first helical gear 136 and a second helical gear fixed to both ends of the helical gear shaft 135. The device includes a tooth 137, a motor housing 138 fixed on one of the bearing housings 133, a second motor 139 fixed on the motor housing 138, and a third helical tooth 1310 connected to the output shaft of the second motor 139 and meshing with the first helical tooth 136. The first helical tooth 136 meshes with the first helical tooth rack 121, and the second helical tooth 137 meshes with the second helical tooth rack 122. The grooving cutter holder 31, the corner cutting cutter holder 61, and the trimming cutter holder 81 are all provided with annular limiting grooves for engaging the lever 132.

[0035] The axial spacing adjustment mechanism 120 operates as follows: the second motor 139 starts, driving the third helical gear 1310 to rotate. The third helical gear 1310 drives the first helical gear 136, which meshes with it, to rotate, thereby driving the helical gear shaft 135 and the second helical gear 137 fixed at its other end to rotate synchronously. Since the first helical gear 136 meshes with the fixed first helical gear rack 121, and the second helical gear 137 meshes with the fixed second helical gear rack 122, the helical gear transmission has the advantages of large overlap, smooth transmission, and high load-bearing capacity, which can effectively reduce impact and vibration and ensure the smoothness and accuracy of the adjustment process. The rotation of the helical gear shaft 135 is converted into linear motion of the entire spacing adjustment drive assembly 130 along the direction of the helical gear rack. The paddle block 132 fixed on the lower push plate 131 moves accordingly, and drives the slotting cutter holder 31, the corner cutting cutter holder 61, or the trimming cutter holder 81 that it is engaged to move along the axial direction of the die-cutting roller 20.

[0036] In particular, the helical gear meshing method adopted by the first helical gear 136 and the first helical gear rack 121 has a self-locking characteristic, which can effectively prevent axial misalignment of the mechanism caused by vibration or external force in the non-drive state, ensuring the positioning stability of each functional mechanism during operation. This mechanism realizes independent or linked electric adjustment of the axial position of each functional mechanism, with high precision and efficiency far exceeding that of manual adjustment.

[0037] The spacing adjustment drive assembly 130 also includes a slide rail fixed to the bracket 10 and a slider fixed to the lower push plate 131 and slidingly engaged with the slide rail. Its function is to provide precise linear guidance and support, ensuring that the spacing adjustment drive assembly 130 moves smoothly along a preset trajectory, preventing jamming and deviation, and further improving the accuracy and reliability of axial adjustment.

[0038] Please refer to Figure 15 The fully automatic plateless die-cutting machine also includes an initial phase adjustment mechanism 140, which includes a third motor 141, a first motor gear 142, and a planetary gear disk gear 143. The third motor 141 is fixed to the bracket 10. The first motor gear 142 is set on the output shaft of the third motor 141. The planetary gear disk gear 143 is connected to the other end of the die-cutting roller 20. Before die-cutting, the initial position of the grooving mechanism 30, the corner cutting mechanism 60, and the trimming mechanism 80 on the die-cutting roller 20 needs to be adjusted using the initial phase adjustment mechanism 140 to align with the die-cutting position of the cardboard 170 and improve the die-cutting accuracy.

[0039] Please refer to Figure 16The fully automatic plateless die-cutting machine also includes an initial phase adjustment mechanism 180, which includes a large gear 181, a third sun gear 182, a third planetary gear 183, a fourth sun gear 184, a fourth planetary gear 185, a lower shaft gear 186, a second bridge gear 187, and an upper shaft gear 188. A large gear 181 is rotatably mounted on the end of the die-cutting roller 20 via an eighth bearing; a third sun gear 182 is sleeved on the end of the die-cutting roller 20 and fixedly connected to the large gear 181; a third planetary gear 183 is rotatably mounted on the planetary gear disk 143 via a gear shaft, the third planetary gear 183 meshes with the third sun gear 182, and is circumferentially distributed around the central axis of the third sun gear 182; a fourth sun gear 184 is fixed on the end of the die-cutting roller 20; a fourth planetary gear 185 is fixed on one end of the gear shaft, the fourth planetary gear 185 meshes with the fourth sun gear 184, and is circumferentially distributed around the central axis of the fourth sun gear 184; a lower shaft gear 186 is mounted on one end of the lower indentation shaft 102; a second bridge gear 187 is rotatably mounted on the bracket 10 via a second bridge shaft, the second bridge gear 145 is connected to the large gear 181 and meshes with the lower shaft gear 186; an upper shaft gear 188 is mounted on one end of the upper indentation shaft 101 and meshes with the lower shaft gear 186.

[0040] The operation of the initial phase adjustment mechanism 180 is as follows: The large gear 181 meshes with the drive gear of an external drive device (such as a motor gear set), driving the large gear 181 to rotate. The rotation of the large gear 181 drives the third sun gear 182, which is fixed to it, to rotate. The third planetary gear 183 rotates around the third sun gear 182. The third planetary gear 183 drives the fourth planetary gear 185 to rotate via a gear shaft. The fourth planetary gear 185 drives the fourth sun gear 184 to rotate. The fourth sun gear 184 then drives the die-cutting roller 20 to rotate. On the other hand, the large gear 181 meshes with the second intermediate gear 187, which then drives the lower shaft gear 186, which meshes with it, to rotate, thereby driving the lower indentation shaft 102 to rotate. The lower shaft gear 186 then drives the upper shaft gear 188, which meshes with it, thereby driving the upper indentation shaft 101 to rotate synchronously in the opposite direction. The initial phase adjustment mechanism 180 provides a stable and reliable power source for the indentation mechanism 100, ensuring that the upper indentation shaft 101 and the lower indentation shaft 102 can roll precisely and synchronously to complete the indentation operation. Please refer to Figure 17The fully automatic plateless die-cutting machine also includes an eccentric transmission mechanism 150, which includes a fourth motor 151, a second motor gear 152, a gear seat 153, an eccentric gear 154, a third bridge gear 155, and a fifth motor 156. The fourth motor 151 is fixed to the bracket 10. The second motor gear 152 is mounted on the output shaft of the fourth motor 151. The gear seat 153 is sleeved on one end of the rubber pad roller 90. The eccentric gear 154 is mounted on the gear seat 153. The third bridge gear 155 is rotatably mounted on the bracket 10 via a third bridge shaft, and the third bridge gear 155 meshes with both the second motor gear 152 and the eccentric gear 154. The fifth motor 156 is fixed to the gear seat 153 and is connected to the rubber pad roller 90 via a transmission.

[0041] The operation of the eccentric transmission mechanism 150 is as follows: the fourth motor 151 drives the third intermediate bridge gear 155 to rotate via the second motor gear 152, and the third intermediate bridge gear 155 then drives the eccentric gear 154 to rotate. The rotational motion of the eccentric gear 154 is converted into an eccentric displacement of the pad roller 90 relative to the die-cutting roller 20 through the gear seat 153, thereby achieving fine adjustment of the pressure between the two rollers. The fifth motor 156 is used to drive the pad roller 90 to rotate itself after the spacing adjustment is completed, so as to cooperate with the die-cutting roller 20 to complete the die-cutting operation. This realizes the electric precision adjustment of the pressure between the pad roller 90 and the die-cutting roller 20, improves the die-cutting effect, and independently drives the pad roller to rotate. Please refer to Figure 2 The fully automatic plateless die-cutting machine also includes a paper shredding conveying mechanism 160. The paper shredding conveying mechanism 160 includes a belt conveyor 161 located below the die-cutting roller 20, a left guard 162 and a right guard 163 located on both sides of the conveying direction of the belt conveyor 161, and a guide structure inclined towards the upper surface of the belt conveyor 161 on both the left guard 162 and the right guard 163.

[0042] The operation of the shredded paper conveying mechanism 160 is as follows: the waste shredded paper generated from die-cutting and trimming falls onto the operating belt conveyor 161, which then conveys it outward to the collection area. The inclined guide structures on the left guard 162 and right guard 163 effectively prevent shredded paper from splashing or scattering during the conveying process, ensuring a clean production environment and efficient collection and treatment of waste.

[0043] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present invention.

Claims

1. A fully automatic plateless die-cutting machine, characterized in that, include: Support (10); The die-cutting roller (20) is rotatably mounted on the bracket (10); Multiple grooving mechanisms (30) are arranged along the axial direction of the die-cutting roller (20). Each grooving mechanism (30) includes a grooving knife holder (31) sleeved on the die-cutting roller (20), and a first grooving knife (32) and a second grooving knife (33) disposed on the grooving knife holder (31). The first grooving knife (32) and the second grooving knife (33) have an arc-shaped structure. The first grooving knife (32) is fixed to the grooving knife holder (31), and the second grooving knife (33) is slidably disposed on the grooving knife holder (31) so that the distance between the first grooving knife (32) and the second grooving knife (33) is adjustable. The grooving spacing adjustment mechanism (40) includes a first arc-shaped internal rack (41) slidably arranged around the central axis of the grooving cutter holder (31), a first adjusting gear (42) meshing with the first arc-shaped internal rack (41), and a splined shaft (43) that connects all the first adjusting gears (42) in series. The first arc-shaped internal rack (41) is fixedly connected to the second grooving cutter (33). The slot spacing control mechanism (50) includes a first motor (51) fixed to the bracket (10), a belt drive assembly (52) driven by the drive shaft of the first motor (51), and a planetary gear set (53) driven by the belt drive assembly (52). The planetary gear set (53) is driven by the spline shaft (43).

2. The fully automatic plateless die-cutting machine according to claim 1, characterized in that, The first motor (51) is a geared motor; The belt drive assembly (52) includes a drive pulley (521) disposed on the output shaft of the first motor (51), a driven pulley (523) connected to the drive pulley (521) via a belt (522), a first drive shaft (524) coaxially connected to the driven pulley (523), and a first adjustment gear (525) disposed at one end of the first drive shaft (524). The other end of the first drive shaft (524) is provided with an encoder (526) for detecting its rotation angle. The planetary gear set (53) includes: The second adjustment gear (531) is rotatably mounted on one end of the die-cutting roller (20) via the first bearing. The second adjustment gear (531) meshes with the transmission gear (431) at the end of the spline shaft (43). The second adjustment gear (531) is provided with an axially extending extension. The third adjusting gear (532) is rotatably disposed at one end of the die-cutting roller (20), and the third adjusting gear (532) is axially fixedly connected to the second adjusting gear (531); A first bearing seat (533) is fixed on the bracket (10), and a second bearing is provided inside the first bearing seat (533), with the inner ring of the second bearing sleeved on the extension. The first sun gear (534) located at one end of the die-cutting roller (20) is rotated by the third bearing. The first bridge gear (535) is rotatably mounted on the bracket (10) via the first bridge shaft. The first bridge gear (535) meshes with the third adjustment gear (532) and the first sun gear (534) on both sides along the axial direction. The first gear disk gear (536) located at one end of the die-cutting roller (20) is rotated by the fourth bearing, and the first gear disk gear (536) meshes with the first adjustment gear (525); Multiple first planetary gears (537) are rotatably mounted on the first gear disk gear (536) via a fifth bearing. The first planetary gears (537) mesh with the first sun gear (534) and are circumferentially distributed around the central axis of the first sun gear (534). Rotate the second sun gear (538) located at one end of the die-cutting roller (20); Multiple second planetary gears (539) are rotatably mounted on the first gear disk gear (536) via a sixth bearing. The second planetary gears (539) mesh with the second sun gear (538) and are circumferentially distributed around the central axis of the second sun gear (538).

3. The fully automatic plateless die-cutting machine according to claim 1, characterized in that, Also includes: The corner cutting mechanism (60) includes a corner cutting knife holder (61) sleeved on the die-cutting roller (20), and a first corner cutting blade (62), a second corner cutting blade (63), a third corner cutting blade (64) bent and connected to one end of the first corner cutting blade (62), and a fourth corner cutting blade (65) bent and connected to one end of the second corner cutting blade (63) on the corner cutting knife holder (61). The first corner cutting blade (62) and the second corner cutting blade (63) have an arc-shaped structure, and the third corner cutting blade (64) and the fourth corner cutting blade (65) have a rectangular structure. The first corner cutting blade (62) is fixed to the corner cutting knife holder (61), and the second corner cutting blade (63) is slidably disposed on the corner cutting knife holder (61) so that the distance between the third corner cutting blade (64) and the fourth corner cutting blade (65) is adjustable. The chamfering distance adjustment mechanism (70) includes a second arc-shaped internal rack (71) slidably arranged around the central axis of the chamfering cutter holder (61), and a second adjusting gear (72) meshing with the second arc-shaped internal rack (71). The spline shaft (43) also engages with the keyway of the second adjusting gear (72).

4. The fully automatic plateless die-cutting machine according to claim 1 or 2, characterized in that, Also includes: The trimming mechanism (80) includes a trimming knife holder (81) sleeved on the die-cutting roller (20) and an annular trimming blade (82) fixed on the trimming knife holder (81).

5. The fully automatic plateless die-cutting machine according to claim 4, characterized in that, Also includes: A rubber pad roller (90) is disposed on the bracket (10) and the distance between it and the die-cutting roller (20) is adjustable; Multiple creasing mechanisms (100) are arranged sequentially along the paper feeding direction of the die-cutting roller (20). Each creasing mechanism (100) includes an upper creasing shaft (101) and a lower creasing shaft (102) with adjustable spacing. The waste paper cutting mechanism (110) is disposed on at least one of the indentation lower shafts (102) and located in front of the trimming mechanism (80). The waste paper cutting mechanism (110) includes a paper guide ring (111) sleeved and fixed to the indentation lower shaft (102) and paper cutters (112) distributed circumferentially on the outside of the paper guide ring (111).

6. The fully automatic plateless die-cutting machine according to claim 5, characterized in that, It also includes an axial spacing adjustment mechanism (120), which comprises: A first helical toothed rack (121) and a second helical toothed rack (122) are fixed to the bracket (10) and extend along the axial direction of the die-cutting roller (20). The spacing adjustment drive assembly (130) is provided on the grooving cutter holder (31), the corner cutting cutter holder (61), and the trimming cutter holder (81). The spacing adjustment drive assembly (130) includes a lower push plate (131), two levers (132) fixed on both sides of the upper end of the lower push plate (131), two bearing seats (133) fixed on both sides of the lower end of the lower push plate (131), a seventh bearing (134) provided on the bearing seat (133), a helical gear shaft (135) passing through the two seventh bearings (134), and a first helical tooth (136) fixed at both ends of the helical gear shaft (135). The first helical tooth (136) is fixed to the first helical tooth (137), the second helical tooth (138) is fixed to the first helical tooth (139), the second helical tooth (139) is fixed to the second helical tooth (139), and the third helical tooth (1310) is connected to the output shaft of the second helical tooth (139) and meshes with the first helical tooth (136). The first helical tooth (136) meshes with the first helical tooth rack (121), and the second helical tooth (137) meshes with the second helical tooth rack (122). The grooving cutter holder (31), the corner cutting cutter holder (61) and the trimming cutter holder (81) are all provided with annular limiting grooves for engaging the push block (132).

7. The fully automatic plateless die-cutting machine according to claim 6, characterized in that: The spacing adjustment drive assembly (130) further includes a slide rail fixed to the bracket (10) and a slider fixed to the push plate (131) and slidingly engaged with the slide rail.

8. The fully automatic plateless die-cutting machine according to claim 5, characterized in that, It also includes an initial phase adjustment mechanism (140), which includes: A third motor (141) is fixed to the bracket (10). The first motor gear (142) is disposed on the output shaft of the third motor (141). A planetary gear disk (143) is disposed at the other end of the die-cutting roller (20), and the planetary gear disk (143) meshes with the first motor gear (142).

9. The fully automatic plateless die-cutting machine according to claim 8, characterized in that, It also includes an initial phase adjustment mechanism (180), which includes: The large gear (181) located at the end of the die-cutting roller (20) is rotated by the eighth bearing. A third sun gear (182) is sleeved on the end of the die-cutting roller (20) and fixedly connected to the large gear (181). The third planetary gear (183) located on the planetary gear disk (143) rotates through the gear shaft. The third planetary gear (183) meshes with the third sun gear (182) and is circumferentially distributed around the central axis of the third sun gear (182). The fourth sun wheel (184) is fixed to the end of the die-cutting roller (20); A fourth planetary gear (185) is fixed to one end of the gear shaft. The fourth planetary gear (185) meshes with the fourth sun gear (184) and is circumferentially distributed around the central axis of the fourth sun gear (184). A lower shaft gear (186) is provided at one end of the lower shaft (102) of the indentation. The second bridge gear (187) is rotatably mounted on the bracket (10) via the second bridge shaft. The second bridge gear (145) is connected to the large gear (181) and meshes with the lower shaft gear (186). An upper shaft gear (188) is disposed at one end of the upper shaft (101) of the indentation and meshes with the lower shaft gear (186).

10. The fully automatic plateless die-cutting machine according to claim 5, characterized in that, It also includes an eccentric transmission mechanism (150), which comprises: A fourth motor (151) is fixed to the bracket (10). The second motor gear (152) is disposed on the output shaft of the fourth motor (151). Gear seat (153) sleeved on one end of the rubber pad roller (90); An eccentric gear (154) is disposed on the gear seat (153). The third bridge gear (155) is rotatably mounted on the bracket (10) via the third bridge shaft. The third bridge gear (155) meshes with the second motor gear (152) and the eccentric gear (154) simultaneously. A fifth motor (156) is fixed to the gear seat (153), and the fifth motor (156) is connected to the rubber pad roller (90) in a transmission connection.

11. The fully automatic plateless die-cutting machine according to claim 1, characterized in that, It also includes a shredder conveying mechanism (160), which includes: A belt conveyor (161) is disposed below the die-cutting roller (20). A left guard (162) and a right guard (163) are respectively provided on both sides of the conveying direction of the belt conveyor (161). The left guard (162) and the right guard (163) are provided with guide structures that are inclined toward the upper surface of the belt conveyor (161).

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