A platform for manufacturing of cigarette packets

Abstract

The present application relates to the technical field of bag printing machinery, and in particular to a bag printing machinery manufacturing platform. The present application provides a bag printing machinery manufacturing platform, comprising: a paper cup manufacturing platform, the paper cup manufacturing platform rotates step by step; a paper blank vacuum adsorption table, the paper blank vacuum adsorption table has multiple and annular array distribution on the paper cup manufacturing platform, and the paper blank vacuum adsorption table can rotate along its own axis and lift. Through the cooperation of the paper cup manufacturing platform, the paper blank vacuum adsorption table, the paper blank curved edge cutting assembly and the paper blank straight edge cutting assembly, the present application can quickly replace the paper blank to cut different length fan-shaped curved surfaces, adjust the width of the paper blank fan-shaped straight edge, and replace the different width of the two fan-shaped straight edges of the paper blank to cut. Compared with the prior art, it is more convenient to change the size of the paper blank production.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing and packaging machinery, specifically to a printing and packaging machinery manufacturing platform. BACKGROUND

[0002] The application of digital twin technology on printing and packaging machinery equipment and its combination with a networked collaborative manufacturing platform means creating a virtual model to simulate the operation of printing and packaging machinery and integrating it with a networked platform to achieve real-time monitoring, remote operation, data analysis and collaborative production. This integrated approach can improve production efficiency, reduce costs and improve product quality. It also allows manufacturers to adapt more quickly to changes in market demand to meet customer requirements.

[0003] Paper cups play an important role in fast-paced modern life, providing a convenient and environmentally friendly solution to meet people's needs for containers. When producing high-quality paper cups, paper blanks are produced, printed and packaged. When producing paper blanks, the paper is usually cut into a fan shape, and then the fan-shaped paper is bonded using a mold to form the main body of the paper cup. The existing technology uses a knife die to cut the paper when cutting the paper. When producing paper cups of various sizes, the knife die needs to be frequently replaced, which is a cumbersome process and cannot be quickly replaced. SUMMARY

[0004] To overcome the above-mentioned shortcomings of the prior art, the present application provides a printing and packaging machinery manufacturing platform, which can effectively solve the problem that the prior art cannot quickly replace the knife die according to needs when cutting with a knife die.

[0005] To achieve the above-mentioned purposes, the present application is implemented by the following technical solutions:

[0006] The present application provides a printing and packaging machinery manufacturing platform, comprising:

[0007] A paper cup manufacturing platform, which rotates step by step;

[0008] A paper blank vacuum suction table, which has a plurality of ring-shaped array distributions on the paper cup manufacturing platform, and can rotate and lift along its own axis;

[0009] A paper blank curved edge cutting assembly for cutting the curved edges of the fan-shaped paper blank, and can set the curved edge cutting length and the width of the two fan-shaped curved edges according to needs;

[0010] A paper blank straight edge cutting assembly for cutting the straight edges of the fan-shaped paper blank, and can set the width of the two fan-shaped straight edges according to needs;

[0011] The rotation direction of the paper cup manufacturing platform and the direction of the paper blank from the paper blank curved edge cutting assembly to the paper blank straight edge cutting assembly are consistent.

[0012] Further, the paper blank curved edge cutting assembly comprises a rotating shaft rotating passively, a plurality of cylindrical cams with different diameters are fixed on the rotating shaft, and the outer circumferential surface of the cylindrical cam is provided with a groove, and each groove is connected with a driven cutting knife through a driven structure and a connecting structure.

[0013] Further, the driven structure comprises a limiting column in sliding connection with the groove, one end of the limiting column is fixedly connected with a horizontal rod, and the other end of the horizontal rod is provided with an insertion slot penetrating up and down;

[0014] Both sides of the plurality of horizontal rods are provided with clamping plates which are fixedly arranged and in sliding connection with the horizontal rods;

[0015] The connecting structure comprises an insertion rod which can be inserted into the insertion slot, the upper end of the insertion rod is fixedly connected with a horizontal plate, the lower end of the horizontal plate is rotationally connected with a multi-stage electric telescopic rod, the lower end of the multi-stage electric telescopic rod is fixedly connected with a connecting plate, the lower end of the connecting plate is fixedly connected with a threaded rod, the threaded rod is in threaded connection with a threaded cylinder in transmission, the lower end of the threaded cylinder is fixedly connected with a driving cutting knife, and the driving cutting knife is in transmission connection with a driven cutting knife;

[0016] The paper blank curved edge cutting assembly further comprises a radially fixed plate which is fixedly arranged, and the threaded cylinder is in rotational connection with the radially fixed plate, and the radially fixed plate is in the radial direction of the paper blank vacuum adsorption table.

[0017] Further, a limiting groove is formed in the radially fixed plate, a limiting plate is in sliding connection in the limiting groove, a spring one is fixedly connected with the limiting plate and the inner wall of the limiting groove, and the limiting plate is rotationally connected with a driven cutting knife;

[0018] A telescopic cylinder one is fixedly installed on the side surface of the radially fixed plate, the telescopic end of the telescopic cylinder one is fixedly connected with a mounting plate, the upper end of the mounting plate is rotationally connected with a short shaft, the threaded cylinder, the driven cutting knife and the short shaft are respectively fixedly connected with a belt pulley one, a belt pulley two and a belt pulley three in the same horizontal plane, and the belt pulley one, the belt pulley two and the belt pulley three are collectively sleeved with a transmission belt.

[0019] Further, the paper blank straight edge cutting assembly comprises an upper fixed column and a lower fixed column which are fixedly arranged and distributed in an upper and lower manner, there is a gap between the upper fixed column and the upper surface of the paper blank vacuum adsorption table, a rotating structure is rotationally arranged in an upper and lower manner between the upper fixed column and the lower fixed column, the rotating structure comprises a rotating ring which is rotationally arranged through a rotating piece, the rotating ring is integrally formed with an outer connecting plate, the outer connecting plate is in sliding arrangement in the outer connecting plate, the upper fixed column is provided with a positioning structure for fixing the rotating structure, and the paper blank straight edge cutting assembly further comprises a cutting power structure for pressing the side edge cutting knife downward to cut the fan-shaped side edge of the paper blank.

[0020] Further, the inner side of the rotating ring is polygonal, and the outer side is circular.

[0021] The positioning structure comprises a polygonal slot with the same cross-sectional shape as the rotating ring, which is arranged on the upper end of the upper fixed column, and a polygonal column which is slidably connected in the polygonal slot, and the upper end of the polygonal column is fixedly connected with an operating rod, the upper end of the operating rod is fixedly connected with a pull rod, the operating rod is sleeved with spring two, and the two ends of the spring two are fixedly connected with the upper fixed column and the pull rod.

[0022] Further, the cutting power structure comprises a fixedly arranged telescopic cylinder two, the telescopic end of the telescopic cylinder two is fixedly connected with a linkage plate, the lower end of the linkage plate is arranged with an arc-shaped slot, and the arc-shaped slot is concentrically arranged with the paper blank vacuum adsorption table, and the upper end of the side cutting knife is fixedly connected with an arc-shaped block which is limitedly slid in the arc-shaped slot.

[0023] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects:

[0024] The paper cup manufacturing platform, the paper blank vacuum adsorption table, the paper blank curved edge cutting assembly and the paper blank straight edge cutting assembly are cooperated with each other, so that the paper blank with different length fan-shaped curved surfaces can be quickly replaced, the width of the paper blank fan-shaped straight edge can be adjusted, and the paper blank with different width of two fan-shaped straight edges can be replaced, which is more convenient than the prior art in changing the production size of the paper blank. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0026] Figure 1 It is a structural schematic view of the first perspective of the present application;

[0027] Figure 2 It is a structural schematic view of the second perspective of the paper blank curved edge cutting assembly of the present application; Figure 1 It is an enlarged structural schematic view of the paper blank curved edge cutting assembly;

[0028] Figure 3 It is a structural schematic view of the second perspective of the paper blank curved edge cutting assembly of the present application;

[0029] Figure 4 It is a structural schematic view of the second perspective of the paper blank curved edge cutting assembly of the present application; Figure 1 It is an enlarged structural schematic view of the paper blank straight edge cutting assembly;

[0030] Figure 5 It is a structural schematic view of the cross section of the paper blank straight edge cutting assembly of the present application;

[0031] Figure 6 Figure for paper blank cutting change of the present application.

[0032] The labels in the figure respectively represent: 1, paper cup manufacturing platform; 2, paper blank vacuum adsorption table; 3, paper blank curved edge cutting assembly; 31, rotating shaft; 32, cylindrical cam; 321, groove; 33, driven structure; 331, limiting column; 332, horizontal rod; 333, insertion slot; 34, clamping plate; 35, connecting structure; 351, horizontal plate; 352, multi-stage electric telescopic rod; 353, connecting plate; 354, threaded rod; 355, threaded cylinder; 36, active cutting knife; 37, paper blank height adjusting structure; 371, pulley one; 372, limiting groove; 373, limiting plate; 374, spring one; 375, driven shaft; 376, pulley two; 377, pulley three; 378, mounting plate; 379, telescopic cylinder one; 3710, driven cutting knife; 3711, transmission belt; 38, radial plate; 4, paper blank straight edge cutting assembly; 41, upper fixed column; 42, lower fixed column; 43, rotating structure; 431, rotating ring; 432, rotating piece; 433, external connecting plate; 434, side edge cutting knife; 44, positioning structure; 441, multi-ribbed slot; 442, multi-ribbed column; 443, operating rod; 444, spring two; 45, cutting power structure; 451, linkage plate; 452, telescopic cylinder two. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] The present application will be further described below in connection with the embodiments.

[0035] It should be noted that the "fixedly arranged" in the text is fixed by using a bracket structure. In order to make the design of the present application more clearly presented, the structure of the bracket is not drawn.

[0036] Embodiment: refer to Figures 1 to 6, the printing and packaging machinery manufacturing platform includes a step-by-step rotating paper cup manufacturing platform 1, a plurality of vacuum adsorption platforms 2 for paper blanks that are distributed in a circular array on the paper cup manufacturing platform 1 and rotate and lift along their own axes, a paper blank curved edge cutting component 3 for cutting the paper blanks, and the curved edge cutting length and the width of the two fan-shaped curved edges can be set as needed, and a paper blank straight edge cutting component 4 for cutting the paper blanks, and the width of the two fan-shaped straight edges can be set as needed. It should be noted that: 1. The step-by-step rotating paper cup manufacturing platform 1 and the vacuum adsorption platform 2 for paper blanks that can rotate and lift along their own axes adopt common technical solutions in the prior art, wherein the paper cup manufacturing platform 1 can be driven by a stepper motor, and the vacuum adsorption platform 2 for paper blanks adopts The rotation is achieved by a transmission method in which two gears mesh with each other, and the lifting and lowering of the paper blank vacuum adsorption platform 2 is achieved by lifting one of the gears. In addition, the paper blank vacuum adsorption platform 2 is an existing product; 2. The rotation direction of the paper cup manufacturing platform 1 is consistent with the direction in which the paper blank passes from the paper blank curved edge cutting component 3 to the paper blank straight edge cutting component 4, thereby achieving an overall cutting sequence of first cutting the fan-shaped curved edge of the paper blank and then cutting the fan-shaped straight edge of the paper blank; 3. The present invention realizes the quick replacement of paper blanks for cutting fan-shaped curved surfaces of different lengths, adjusting the width of the paper blank fan-shaped straight edge, and replacing the paper blanks for cutting different widths of the two fan-shaped straight edges through the mutual cooperation of the paper cup manufacturing platform 1, the paper blank vacuum adsorption platform 2, the paper blank curved edge cutting component 3, and the paper blank straight edge cutting component 4.

[0037] It should be noted that: before the paper blank is cut in the present invention, the wound paper blank is first cut into the following Figure 6 The first state shown ( Figure 6 3710 ). Figure 6The second state shown; then the paper cup manufacturing platform 1 rotates again by one step angle, so that the cut fan-shaped curved edge of the paper blank is rotated to the corresponding position of the paper blank straight edge cutting assembly 4, the opening angle of the two side edge cutting knives 434 is adjusted as needed, in addition, the paper blank fan-shaped curved edge is concentrically arranged with the rotation points of the two side edge cutting knives 434, so as to ensure that the paper blank fan-shaped straight edge is perpendicular to the center of the fan-shaped curved edge, which helps to build a stable cylindrical shape, and the cut paper blank is as shown in Figure 6 The third state shown. In addition, the image can be printed before or after cutting according to actual conditions.

[0038] Specifically, referring to Figures 1 to 3 , the paper blank curved edge cutting assembly 3 includes a driven rotating shaft 31 driven to rotate by a rotating motor (not shown in the figure), a plurality of cylindrical cams 32 with different diameters are fixedly connected to the rotating shaft 31, and the outer circumferential surface of the cylindrical cam 32 is provided with a groove 321. It should be noted that the height of the groove 321 in the vertical direction changes to convert the change of the cutting angle of the active cutting knife 36 relative to the paper blank, and different diameters of the cylindrical cam 32 are set to make the time when the groove 321 affects the active cutting knife 36 different. The grooves 321 on each cylindrical cam 32 have the same lifting amplitude in each radial direction, and different numbers and diameters of cylindrical cams 32 can be installed on the rotating shaft 31 according to actual needs.

[0039] The driven structure 33 includes a limiting column 331 in limiting sliding connection with the groove 321, that is, the limiting column 331 is always located in the groove 321, one end of the limiting column 331 is fixedly connected with a horizontal rod 332, and the other end of the horizontal rod 332 is provided with a slot 333 penetrating upward and downward; a plurality of horizontal rods 332 are provided with clamping plates 34 on both sides, the clamping plates 34 are fixedly arranged and in sliding connection with the horizontal rod 332, and the horizontal rod 332 can only move along its own axis direction under the limitation of a pair of clamping plates 34 on the horizontal rod 332; the connecting structure 35 includes a plug rod which can be plugged into the slot 333, the upper end of the plug rod is fixedly connected with a horizontal plate 351, the lower end of the horizontal plate 351 is rotatably connected with a multi-stage electric telescopic rod 352, the horizontal plate 351 can rotate relative to the multi-stage electric telescopic rod 352 to avoid being hindered by the horizontal rod 332 during the extension and retraction of the multi-stage electric telescopic rod 352, the lower end of the multi-stage electric telescopic rod 352 is fixedly connected with a connecting plate 353, the lower end of the connecting plate 353 is fixedly connected with a threaded rod 354, the threaded rod 354 is in threaded connection (non-self-locking thread) with a threaded cylinder 355, the lower end of the threaded cylinder 355 is fixedly connected with the active cutting knife 36, the threaded cylinder 355 is rotatably connected with the radial plate 38, and the radial plate 38 is fixedly arranged, that is, the bracket is omitted.

[0040] By the above setting, the angle of the active cutting knife 36 facing the paper blank is changed in real time to cut the paper blank fan-shaped curved edge and the paper blank curved edge cutting assembly 3 cuts the paper blank fan-shaped curved edge of different lengths: the horizontal plate 351 is lifted by the multi-stage electric telescopic rod 352, the rotation of the horizontal plate 351 relative to the multi-stage electric telescopic rod 352 makes the plug rod plug into the corresponding plug slot 333, the rotation speed of the set rotating shaft 31 and the cylindrical cam 32 matched with the rotation speed of the paper blank vacuum adsorption table 2 makes the paper blank vacuum adsorption table 2, the rotating shaft 31 and the cylindrical cam 32 rotate synchronously, the position of the active cutting knife 36 relative to the paper blank is changed during the rotation of the paper blank vacuum adsorption table 2, and the groove 321 is lifted in the vertical direction through the limiting column 331, the horizontal rod 332, the plug slot 333 and the plug rod, the horizontal plate 351, the multi-stage electric telescopic rod 352, the connecting plate 353 and the threaded rod 354 during the rotation of the rotating shaft 31 and the cylindrical cam 32, and the threaded cylinder 355 and the active cutting knife 36 are further rotated under the driving of the thread to change the cutting angle of the active cutting knife 36 in real time.

[0041] The active cutting knife 36 is drivingly connected with the driven cutting knife 3710. The driving connection here can adopt common belt transmission, chain transmission or gear transmission, but the driving mode is not limited, which can only maintain the positional relationship between the active cutting knife 36 and the driven cutting knife 3710, can only cut the paper blank with fixed fan-shaped straight edge, and has certain limitations.

[0042] Further, in order to remove the above-mentioned restrictions, the following design is additionally carried out: 1. The distance relationship is changed, a limiting groove 372 is opened in the radial plate 38, a limiting plate 373 is slidably connected in the limiting groove 372, the limiting plate 373 and the inner wall of the limiting groove 372 are fixedly connected with a spring 374, a driven cutting knife 3710 is rotatably connected in the limiting plate 373, and the driven cutting knife 3710 is set to change the position on the radial plate 38 to increase or decrease the distance between the driven cutting knife 3710 and the driven cutting knife 3710. It should be noted that the radial plate 38 is in the radial direction of the paper blank vacuum adsorption table 2; the spring 374 has a certain strength so that the driven cutting knife 3710 will not change position during cutting due to paper blank obstruction. 2. In order to fix the side of the radial plate 38, a telescopic cylinder 379 is fixedly installed, the telescopic end of the telescopic cylinder 379 is fixedly connected with a mounting plate 378, the upper end of the mounting plate 378 is rotatably connected with a short shaft, the threaded cylinder 355, the driven cutting knife 3710 and the short shaft are respectively fixedly connected with a belt pulley 371, a belt pulley 376 and a belt pulley 377 on the same horizontal plane, and the belt pulley 371, the belt pulley 376 and the belt pulley 377 are collectively sleeved with a transmission belt 3711. By driving the mounting plate 378 away from or close to the radial plate 38 through the telescopic cylinder 379, the distance between the mounting plate 378 and the radial plate 38 is changed, thereby driving the limiting plate 373 to slide in the limiting groove 372, maintaining the transmission relationship between the belt pulley 371, the belt pulley 376 and the belt pulley 377 and the transmission belt 3711, and synchronously driving the driven cutting knife 3710 and the driven cutting knife 36 to change the cutting angle synchronously through this transmission relationship.

[0043] Specifically, referring to Figures 4 to 5 , the paper blank straight edge cutting assembly 4 includes fixedly arranged upper fixed columns 41 and lower fixed columns 42, and the upper fixed columns 41 and the lower fixed columns 42 are distributed vertically. The upper fixed columns 41 have a gap with the upper surface of the paper blank vacuum adsorption table 2, which will not affect the position change of the paper blank vacuum adsorption table 2, and also omits the bracket structure. The upper fixed columns 41 and the lower fixed columns 42 are rotatably arranged with a rotating structure 43 vertically between them. The rotating structure 43 includes a rotating ring 431 rotatably arranged through a rotating piece 432, and the rotating ring 431 is integrally formed with an external connecting plate 433. The external connecting plate 433 is slidably arranged with a side cutting knife 434 inside. The upper fixed column 41 is provided with a positioning structure 44 for fixing the rotating structure 43. The paper blank straight edge cutting assembly 4 further includes a cutting power structure 45 for pressing the side cutting knife 434 to cut the fan-shaped side of the paper blank. By adjusting the included angle between the two external connecting plates 433 to adjust the angle relationship of the side cutting knife 434 relative to the paper blank, the rotating structure 43 is fixed by the cutting power structure 45, and the radial cutting is realized by applying pressure to the side cutting knife 434 through the cutting power structure 45.

[0044] One of the implementations for fixing is that the inner side of the rotating ring 431 is polygonal and the outer side is circular.

[0045] The second fixed setting is realized: the positioning structure 44 includes a multi-ribbed groove 441 which is opened on the upper end of the upper fixed column 41 and has the same cross-sectional shape as the rotating ring 431, a multi-ribbed column 442 is slidingly connected in the multi-ribbed groove 441, an operating rod 443 is fixed to the upper end of the multi-ribbed column 442, a pull rod is fixed to the upper end of the operating rod 443, a spring 444 is sleeved on the operating rod 443, and the two ends of the spring 444 are fixed to the upper fixed column 41 and the pull rod, respectively, and the spring 444 facilitates the reset of the operating rod 443 and the pull rod.

[0046] Through the above setting, when the position relationship of the two side cutting knives 434 needs to be changed, the multi-ribbed column 442 is lifted to separate from the rotating ring 431 by the pull rod and the upper fixed column 41, so that the rotating ring 431 and the rotating member 432 can rotate freely, a technician rotates the two rotating rings 431 in opposite directions by the same angle, which is a multiple of 360° / the number of ribs of the multi-ribbed column 442, so that the rotating ring 431 after rotation is in the same plane as each side surface of the multi-ribbed column 442, and then the pull rod is loosened, and the multi-ribbed column 442 is repositioned in the rotating ring 431 under the elastic force of the spring 444.

[0047] The power cutting setting is as follows: the cutting power structure 45 includes a fixedly arranged telescopic cylinder 452, the telescopic end of the telescopic cylinder 452 is fixedly connected with a linkage plate 451, an arc-shaped groove is opened on the lower end of the linkage plate 451, and the arc-shaped groove is concentrically arranged with the paper blank vacuum adsorption table 2, and the upper end of the side cutting knife 434 is fixedly connected with an arc-shaped block which is limitingly and slidingly arranged in the arc-shaped groove (the arc-shaped groove and the arc-shaped block are not shown). When the position of the rotating ring 431 is adjusted, the arc-shaped block will slide in the arc-shaped groove, but it will not affect the vertical direction, and after the position of the rotating ring 431 and the side cutting knife 434 is determined, the telescopic cylinder 452 presses down the linkage plate 451 and drives the side cutting knife 434 to cut the paper blank fan-shaped straight edge through the limitingly and slidingly matched arc-shaped block and the arc-shaped groove.

[0048] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. Printing and packaging machinery manufacturing platform, characterized by: include: A paper cup manufacturing platform (1), wherein the paper cup manufacturing platform (1) rotates in a stepwise manner; A paper blank vacuum adsorption platform (2), wherein the paper blank vacuum adsorption platform (2) has a plurality of vacuum adsorption platforms (2) distributed in a circular array on the paper cup manufacturing platform (1), and the paper blank vacuum adsorption platform (2) can rotate and rise and fall along its own axis; The paper blank curved edge cutting component (3) is used to cut the fan-shaped curved edge of the paper blank, and the curved edge cutting length and the width of the two fan-shaped curved edges can be set according to needs; A paper blank straight edge cutting component (4) is used to cut the fan-shaped straight edges of the paper blank, and the width of the two fan-shaped straight edges can be set according to needs; The rotation direction of the paper cup manufacturing platform (1) is consistent with the direction of the paper blank from the paper blank curved edge cutting component (3) to the paper blank straight edge cutting component (4); The paper blank curved edge cutting assembly (3) comprises: a passively rotating rotating shaft (31), a plurality of cylindrical cams (32) with different diameters fixedly connected to the rotating shaft (31), a groove (321) provided on the outer peripheral surface of the cylindrical cam (32), and each groove (321) being connected to an active cutting knife (36) via a driven structure (33) and a connecting structure (35); The driven structure (33) comprises a limiting column (331) that is slidably connected to the groove (321), one end of the limiting column (331) is fixedly connected to a horizontal rod (332), and the other end of the horizontal rod (332) is penetrated by a slot (333) at the top and bottom. Clamps (34) are provided on both sides of the plurality of horizontal rods (332), and the clamps (34) are fixedly arranged and slidably connected to the horizontal rods (332); The connecting structure (35) includes a plug rod that can be plugged into the slot (333), the upper end of the plug rod is fixedly connected to a horizontal plate (351), the lower end of the horizontal plate (351) is rotatably connected to a multi-stage electric telescopic rod (352), the lower end of the multi-stage electric telescopic rod (352) is fixedly connected to a connecting plate (353), the lower end of the connecting plate (353) is fixedly connected to a threaded rod (354), the threaded rod (354) is transmission-threadedly connected to a threaded barrel (355), the lower end of the threaded barrel (355) is fixedly connected to an active cutting knife (36), and the active cutting knife (36) is transmission-connected to a driven cutting knife (3710); The paper blank curved edge cutting assembly (3) further includes a fixed radial plate (38), and the threaded cylinder (355) is rotatably connected to the radial plate (38), and the radial plate (38) is located in the radial direction of the paper blank vacuum adsorption table (2); A limiting groove (372) is provided in the radial plate (38), a limiting plate (373) is slidably connected in the limiting groove (372), a spring (374) is fixedly connected to the limiting plate (373) and the inner wall of the limiting groove (372), and a driven cutting knife (3710) is rotatably connected in the limiting plate (373); A telescopic cylinder 1 (379) is fixedly mounted on the side of the radial plate (38), a mounting plate (378) is fixedly connected to the telescopic end of the telescopic cylinder 1 (379), a short shaft is rotatably connected to the upper end of the mounting plate (378), the threaded cylinder (355), the driven cutting knife (3710), and the short shaft are respectively fixedly connected to pulley 1 (371), pulley 2 (376), and pulley 3 (377) on the same horizontal plane, and a transmission belt (3711) is commonly sleeved on the outside of the pulley 1 (371), pulley 2 (376), and pulley 3 (377).

2. The printing and packaging machinery manufacturing platform according to claim 1, characterized in that: The paper blank straight edge cutting assembly (4) comprises an upper fixed column (41) and a lower fixed column (42) which are fixedly arranged, and the upper fixed column (41) and the lower fixed column (42) are distributed up and down, a gap exists between the upper fixed column (41) and the upper surface of the paper blank vacuum adsorption table (2), a rotating structure (43) is arranged between the upper fixed column (41) and the lower fixed column (42) for rotating up and down, the rotating structure (43) comprises a rotating ring (431) which is rotatably arranged through a rotating member (432), the rotating ring (431) is integrally formed with an external plate (433), a side cutting knife (434) is slidably arranged in the external plate (433), a positioning structure (44) for fixing the rotating structure (43) is arranged in the upper fixed column (41), and the paper blank straight edge cutting assembly (4) further comprises a cutting power structure (45) for pressing down the side cutting knife (434) to cut the fan-shaped side of the paper blank.

3. The printing and packaging machinery manufacturing platform according to claim 2, characterized in that: The inner side surface of the rotating ring (431) is polygonal, and the outer side surface is circular; The positioning structure (44) includes a polygonal groove (441) which is opened at the upper end of the upper fixed column (41) and has the same cross-sectional shape as the rotating ring (431), a polygonal column (442) is slidably connected in the polygonal groove (441), an operating rod (443) is fixed to the upper end of the polygonal column (442), a pull rod is fixed to the upper end of the operating rod (443), a spring 2 (444) is provided on the outer sleeve of the operating rod (443), and the two ends of the spring 2 (444) are respectively fixed to the upper fixed column (41) and the pull rod.

4. The printing and packaging machinery manufacturing platform according to claim 3, characterized in that: The cutting power structure (45) comprises a fixedly arranged telescopic cylinder 2 (452), the telescopic end of the telescopic cylinder 2 (452) being fixedly connected to a linkage plate (451), the lower end of the linkage plate (451) being provided with an arcuate groove, and the arcuate groove being arranged concentrically with the paper blank vacuum adsorption table (2), and the upper end of the side cutting knife (434) being fixedly connected to an arcuate block which is limitedly slidable with the arcuate groove.

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