Indentation tool for paperboard bending
By introducing a wetting component and a limiting mechanism into the cardboard creasing machine, the problems of cracking and warping caused by the high brittleness of corrugated cardboard during the creasing process are solved, thereby improving the stability and precision of creasing and ensuring high-quality bending of the cardboard.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-10
AI Technical Summary
Existing cardboard creasing machines are prone to cracking and warping when processing brittle corrugated cardboard, affecting processing quality and failing to effectively fix and limit the shape, resulting in poor creasing accuracy.
The wetting component pre-sprays wetting liquid to reduce the brittleness of the cardboard, and the limiting mechanism prevents warping and displacement. Combined with the adjustable creasing component and auxiliary support structure, the stability and accuracy of the cardboard during the creasing process are ensured.
It improves the quality and precision of cardboard creasing, avoids cracks and warping, and ensures the accuracy and integrity of subsequent bending.
Smart Images
Figure CN224103619U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to paperboard indentation equipment technical field especially relates to a paperboard indentation frock for paperboard bending. BACKGROUND
[0002] Paper product packaging is the largest kind of packaging industrial products, and carton is the most important transportation packaging form, while paper box is widely used as the sales packaging of various products such as food, medicine and electronics, with the change of transportation mode and the reform of sales mode, the style of carton and paper box is increasingly diversified, among them, corrugated board is one of the materials commonly used to make paper box board. Corrugated board is made of corrugated board, and is the most widely used paper container packaging, and is widely used for transportation packaging. Corrugated board is widely used because it has many unique advantages: good buffering performance; light, firm; small size; abundant raw materials, low cost; easy to automate production; low packaging operation cost; can package various articles; less metal consumption; good printing performance; recyclable. In the process of making corrugated board into a packaging box, corrugated board needs to be bent, partially cut and cut off, etc. Therefore, paperboard indentation machine becomes one of the indispensable equipment in paperboard processing and production process. With the continuous development of paperboard indentation machine, paperboard indentation machine is widely used for its unique advantages
[0003] Before bending the corrugated board, the indentation machine is usually used to process the corresponding indentation at the bending position to facilitate accurate and high-quality bending of the paperboard. However, the corrugated board is brittle, and the existing processing equipment cannot wet the paperboard deformation area before operation, so the bending operation and indentation processing directly on the paperboard are prone to cracks on the surface of the paperboard, and the subsequent bending process is prone to crack expansion and rupture, which seriously affects the quality of the bent paperboard. In addition, when the existing indentation machine performs indentation operation, the paperboard on both sides of the indentation line is prone to warping or displacement, which causes the paperboard surface near the indentation line to be easily deformed and creased, reducing the processing quality of the paperboard. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a paperboard indentation frock for paperboard bending, which can reduce the brittleness of paperboard and the risk of crack during paperboard indentation by pre-wetting the indentation area, and prevent the paperboard from warping or displacement during indentation processing by setting a limiting structure, so as to improve the flatness and processing stability of the paperboard, solve the problem that the existing indentation machine directly processes the indentation of the paperboard with high brittleness, which is prone to cause cracks in the paperboard and affect the quality of subsequent paperboard processing, and the problem that the existing indentation machine cannot limit the shape of the paperboard, which is prone to cause warping and displacement of the paperboard during indentation, resulting in poor indentation precision and additional deformation creases on both sides of the indentation.
[0005] The utility model discloses a technical scheme is adopted: a kind of paperboard bending indentation tool, including mounting plate, transmission assembly and support frame are supported on the mounting plate, and indentation assembly and wetting assembly are suspendedly installed on the support frame above the transmission plane defined by the transmission assembly, auxiliary support mechanism that indentation assembly is assisted to carry out indentation processing below the transmission plane defined by the transmission assembly is also connected on the support frame, the pressing limit mechanism that the indentation wheel of the indentation assembly is also arranged with the limit of paperboard on both sides is positioned, wherein the pressing limit mechanism and the wetting assembly are arranged in the upstream of the indentation assembly.
[0006] According to a preferred embodiment, the indentation assembly comprises an indentation wheel, a polygonal crossbar, an alignment connecting rod, a suspended base plate and a first lifting rod, wherein the indentation wheel is adjustably sleeved on the polygonal crossbar, and the two ends of the polygonal crossbar are connected with the alignment connecting rods, the two alignment connecting rods are connected with the bottom surface of the suspended base plate away from the axial upper end of the polygonal crossbar, and the suspended base plate is connected with the top mounting plate of the support frame through the first lifting rod.
[0007] According to a preferred embodiment, the indentation wheel comprises a roller body with an indentation ring edge connected to the outer ring wall, a bushing bearing body coaxially inserted into the roller body, and a locking sleeve inserted into the inner ring of the bushing bearing body, wherein the sleeve is adjustably sleeved on the polygonal crossbar.
[0008] According to a preferred embodiment, the fourth lifting rod array of the pressing limit mechanism is connected with the bottom surface of the top mounting plate of the support frame, and the axial lower end of the two fourth lifting rods is connected with the two ends of the guide slide rod; an open sleeve is slidably sleeved on the guide slide rod, and the open sleeve is connected with a transverse mounting strip away from the bottom of the guide slide rod; the transverse mounting strip is connected with the warping pressure limiting plate through a support connecting strip.
[0009] According to a preferred embodiment, a plurality of pressing rollers are spacedly embedded on the bottom surface of the plate body of the warping pressure limiting plate.
[0010] According to a preferred embodiment, the second lifting rod of the wetting assembly is installed on the top mounting plate, a liquid storage tank is connected with the axial lower end of the second lifting rod, and the bottom of the liquid storage tank is connected with the liquid guide cavity plate through the arrayed positioning connecting rods, the liquid guide cavity plate is communicated with the liquid storage tank through a liquid discharge pipe, a plurality of nozzles are spacedly inserted into the lower surface of the liquid guide cavity plate, and a driving pump for driving the pressurized discharge of wetting liquid is arranged at the output port of the liquid storage tank.
[0011] According to a preferred embodiment, the top mounting plate of the support frame is suspended on the mounting plate through support columns connected with the corners thereof.
[0012] According to a preferred embodiment, the conveying assembly comprises a support frame, transmission rollers, parallel conveying belts and a conveying drive motor, wherein the support frame is supported on the mounting plate, and the support frame rotatably supports two transmission rollers above the mounting plate; two parallel conveying belts are sleeved on the two transmission rollers and are arranged in parallel and spaced apart; and the transmission rollers are further in transmission connection with the conveying drive motor arranged on the support frame.
[0013] According to a preferred embodiment, the auxiliary support mechanism comprises a middle support plate below the conveying plane defined by the parallel conveying belts and connected with the support columns, a third lifting adjusting rod supported on the middle support plate, and an auxiliary support plate arranged on the third lifting adjusting rod and between the two parallel conveying belts.
[0014] According to a preferred embodiment, a chamfered batten is arranged at the side edge of the auxiliary support plate.
[0015] The paperboard bending indentation tooling device has the advantages that:
[0016] The indentation assembly can adjustably process indentations with different depths on the paperboard in a rolling manner to meet the bending requirements of different paperboards and ensure the accuracy and integrity of the bending. The wetting assembly is arranged upstream of the working position of the indentation assembly, so that it can preliminarily spray and wet the paperboard to be indented, so that the output atomized wetting liquid can infiltrate the paperboard indentation area, thereby reducing the brittleness of the paperboard, and the softened paperboard can have better toughness to facilitate indentation deformation without damage and cracks, thereby improving the quality and effect of indentation processing to facilitate subsequent high-quality bending of the paperboard. The two crimping limiting mechanisms are arranged on both sides of the indentation wheel in a position-adjusted manner, so that the crimping limiting mechanism 7 can effectively suppress the folding and lifting of both sides caused by the middle part of the paperboard during the indentation wheel pressing process, so that the paperboard as a whole still maintains a flat state, thereby effectively avoiding the lifting and displacement of the paperboard during the indentation processing process, thereby ensuring the precision and quality of the indentation. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a preferred structure schematic view of the paperboard bending indentation tooling device provided by the utility model;
[0018] Figure 2 is a preferred side plan structure schematic view of the paperboard bending indentation tooling device provided by the utility model;
[0019] Figure 3 is a preferred indentation assembly structure diagram of the indentation tool for paperboard bending provided by the present application;
[0020] Figure 4 is a preferred indentation assembly structure diagram of the indentation tool for paperboard bending provided by the present application. DETAILED DESCRIPTION
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the present application will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.
[0022] The technical solutions provided by the present application will be described in detail below with reference to the drawings by way of embodiments. It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application. In some examples, since some embodiments belong to prior art or conventional technology, they are not described or not described in detail. In this paper, the serial number of the components itself, such as "first", "second", etc., is only used to distinguish the described objects, and does not have any order or technical meaning.
[0023] The following will be described in detail in combination with the drawings.
[0024] Embodiment 1
[0025] The present application provides a paperboard bending indentation tool, which comprises a mounting plate 1, a conveying assembly 2, a support frame 3, an indentation assembly 4, a wetting assembly 5, an auxiliary support mechanism 6 and a pressure limiting mechanism 7.
[0026] According to Figures 1-4In the shown specific embodiment, the mounting plate 1 is adjustably arranged in the workshop to provide a mounting plane. The conveying assembly 2 and the support frame 3 are supported on the mounting plate 1. The creasing assembly 4 and the wetting assembly 5 are suspended on the support frame 3 above the conveying plane defined by the conveying assembly 2. The auxiliary support mechanism 6 is also connected on the support frame 3 below the conveying plane defined by the conveying assembly 2 to assist the creasing assembly 4 in the creasing process. The pressing limiting mechanisms 7 are also arranged on both sides of the creasing wheel 41 of the creasing assembly 4 to limit the paperboard to prevent the paperboard from being warped and / or deviated during the creasing process. The pressing limiting mechanisms 7 and the wetting assembly 5 are arranged upstream of the creasing assembly 4 to complete the paperboard limiting and wetting in advance. The creasing assembly 4 provided in the application can adjustably process different depths of creases on the paperboard by rolling to meet the bending needs of different paperboards and ensure the accuracy and integrity of the bending. The wetting assembly 5 of the application is arranged upstream of the working position of the creasing assembly 4, so that it can pre-spray the paperboard to be creased in advance, so that the output atomized wetting liquid can infiltrate the paperboard to be creased area, thereby reducing the brittleness of the paperboard, and the softened paperboard can have better toughness to facilitate creasing deformation without damage and crack, thereby improving the quality and effect of the creasing process to facilitate subsequent high-quality bending of the paperboard. The two pressing limiting mechanisms 7 provided in the application are arranged in a manner of being arranged in position and being liftable and translatable on both sides of the creasing wheel 41, so that during the pressing of the paperboard by the creasing wheel 41, the pressing limiting mechanisms 7 can effectively suppress the folding and warping of the two sides caused by the middle part of the paperboard, so that the paperboard as a whole still maintains a flat state, thereby effectively avoiding the occurrence of adverse phenomena such as warping and displacement of the paperboard during the creasing process, thereby ensuring the precision and quality of the creasing.
[0027] Preferably, the conveying assembly 2 comprises a support frame 21, a transmission roller 22, parallel conveying belts 23 and a conveying drive motor 24. Preferably, the support frame 21 is supported on the mounting plate 1. Further preferably, the support frame 21 rotatably supports the two transmission rollers 22 above the mounting plate 1. Preferably, the two transmission rollers 22 are sleeved with two parallel conveying belts 23 arranged in parallel and spaced apart. Preferably, the transmission roller 22 is further in transmission connection with the conveying drive motor 24 arranged on the support frame 21. Preferably, the conveying drive motor 24 can be selected as a SHT-26-KT type servo motor. Preferably, a plurality of anti-skid protrusions made of rubber are arranged on the surface of the parallel conveying belts 23, and a plurality of blocking strips capable of intercepting and pushing the paperboard to prevent relative slipping between the paperboard and the belt body are also arranged on the belt body in the moving direction. The parallel conveying belts 23 provided in the application can drive the paperboard to move synchronously in a double-zone positioning manner to ensure the stability and continuity of the movement.
[0028] Preferably, the top mounting plate 32 of the support frame 3 is suspended on the mounting plate 1 through the support columns 31 connected with the corners thereof.
[0029] Preferably, the indentation assembly 4 comprises an indentation wheel 41, a polygonal crossbar 42, alignment connecting rods 43, a suspended base plate 44 and a first lifting rod 45. Preferably, the indentation wheel 41 is adjustably sleeved on the polygonal crossbar 42. Preferably, both ends of the polygonal crossbar 42 are connected with the alignment connecting rods 43. Preferably, the two alignment connecting rods 43 are connected on the bottom surface of the suspended base plate 44 away from the axial upper end of the polygonal crossbar 42. Further preferably, the suspended base plate 44 is connected with the top mounting plate 32 of the support frame 3 through the first lifting rod 45. Preferably, the polygonal crossbar 42 can be hexagonal, pentagonal, rectangular, etc. in cross section, so that it can have non-rotating guiding ability. Preferably, the first lifting rod 45 can be selected as a type SHT-ptr-300A electric drive hydraulic lifting rod. The indentation wheel 41 provided in the application rolls against the surface of the paperboard, so as to synchronously roll with the translation of the paperboard to continuously press out bending indentation on the paperboard. Since the paperboard is in rolling contact with the indentation wheel 41, the paperboard is effectively followed and conveyed in parallel with the conveying belt 23 without relative displacement, so as to generate strip indentation on the surface of the paperboard relative to the rolling indentation wheel 41. The first lifting rod 45 provided in the application can pre-adjust the working height of the indentation wheel 41 with high precision according to requirements, so that the indentation wheel 41 can press out indentation with different depths on paperboard with different thicknesses, improving the processing range. The polygonal crossbar 42 provided in the application can change the position of the indentation wheel 41 in the direction perpendicular to the motion direction of the paperboard in cooperation with the indentation wheel 41, so that the indentation wheel 41 can process indentation on different areas of the paperboard.
[0030] Preferably, the indentation wheel 41 comprises a roller body 411 with an indentation ring edge 412 connected on the outer ring wall, an insert sleeve bearing body 413 coaxially inserted in the roller body 411, and a locking sleeve 414 inserted in the inner ring of the insert sleeve bearing body 413. Preferably, the sleeve 414 is adjustably sleeved on the polygonal crossbar 42, so that the roller body 411 can be axially rotated relative to the polygonal crossbar 42. Preferably, the locking sleeve 414 has a through hole that matches the cross-sectional profile of the polygonal crossbar 42, and a locking screw is inserted on the side wall of the sleeve body, which can limit the position of the locking sleeve 414 on the polygonal crossbar 42, so that by adjusting the state of the locking screw, the indentation wheel 41 can be translated along the axis of the polygonal crossbar 42. After the indentation wheel 41 moves to the working position, the locking screw is screwed so that the locking screw inserted into the front end of the locking sleeve 414 abuts against the surface of the polygonal crossbar 42 to ensure the stability of the locking sleeve 414 on the polygonal crossbar 42. The inner and outer rings of the insert sleeve bearing body 413 provided in the present application are connected with the locking sleeve 414 and the roller body 411 respectively by welding or bolt positioning connection, so that the roller body 411 can be axially rotated relative to the locking sleeve 414.
[0031] Preferably, the wetting assembly 5 comprises a second lifting rod 51, a liquid storage tank 52, a liquid discharge pipe 53, a positioning connecting rod 54, a liquid guide cavity plate 55, a nozzle 56 and a driving pump 57. Preferably, the second lifting rod 51 of the wetting assembly 5 is installed on the top mounting plate 32 in a manner that it is on the same straight line with the first lifting rod 45 in the direction of the paperboard movement, that is, the axis of the second lifting rod 51 and the axis of the second lifting rod 45 together define a plane that coincides with the direction of the movement of the paperboard. Preferably, the second lifting rod 51 can be an electrically driven hydraulic lifting rod of model SHT-ptr-500B. Preferably, the liquid storage tank 52 is connected to the axial lower end of the second lifting rod 51. Further preferably, the bottom of the liquid storage tank 52 is connected to the liquid guide cavity plate 55 through an array of positioning connecting rods 54. Preferably, the liquid guide cavity plate 55 is in communication with the liquid storage tank 52 through the liquid discharge pipe 53. Preferably, a plurality of nozzles 56 are inserted at intervals on the lower surface of the liquid guide cavity plate 55. Preferably, the nozzle 56 can be a humidifying nozzle of model SHT-TXZ05, which forms fine atomized water vapor to prevent the corrugated paper from breaking, with a spraying distance of 0.5-1.5 meters. Preferably, the upper end of the nozzle 56 is provided with external threads to facilitate its threaded insertion into the liquid guide cavity plate 55. Preferably, a driving pump 57 for driving the pressurized discharge of the wetting liquid is also provided at the output port of the liquid storage tank 52. Preferably, the driving pump 57 can be a miniature pressurized liquid pump of model KYR-350. The output end of the driving pump 57 is connected to the input end of the liquid discharge pipe 53, and the connection is made through a pipe joint formed by a switch valve, and a clamp or other structure is externally provided to ensure the stability of the connection. The liquid storage tank 53 provided in the present application can store a sufficient amount of wetting liquid in advance, which is sprayed out of the nozzle 56 under the driving of the driving pump 57, so that the atomized wetting liquid output by the nozzle 56 can infiltrate the area of the paperboard to be scored, thereby reducing the brittleness of the paperboard, and the softened paperboard can have better toughness to facilitate the formation of score deformation without damage and without cracks, thereby improving the quality and effect of the scoring process to facilitate subsequent high-quality bending of the paperboard.
[0032] Preferably, the auxiliary support mechanism 6 comprises a middle support plate 61 connected with the support column 31 below the transmission plane defined by the parallel conveying belts 23, a third lifting adjusting rod 62 supported on the middle support plate 61, and an auxiliary support plate 63 arranged on the third lifting adjusting rod 62 and between the two parallel conveying belts 23. Preferably, the third lifting adjusting rod 62 can be an electrically driven hydraulic lifting column of model SHT-ptr-200a. Further preferably, the auxiliary support plate 63 is arranged in a flush manner with the parallel conveying belts 23 to provide stable support for the paperboard moving to the indentation station. Preferably, chamfered strips 631 are arranged on the sides of the auxiliary support plate 63 to prevent the plate body from scratching the paperboard during flat translation. The auxiliary support plate 63 provided in the application can provide a stable support surface, so that the indentation wheel 41 can stably and uniformly process the indentation on the surface of the paperboard, avoiding the problem that the single conveying belt cannot guarantee the indentation quality due to stretching and up-and-down fluctuation.
[0033] Preferably, the fourth lifting rods 71 of the pressing limiting mechanism 7 are arranged on the bottom surface of the top mounting plate 32 of the support frame 3. Further preferably, the axial lower ends of the two fourth lifting rods 71 on the same longitudinal line are connected with the two ends of the guide slide rod 72 to define the working height of the guide slide rod 72. Preferably, the fourth lifting rod 71 can be an electrically driven hydraulic lifting rod of model SHT-ptr-400C. Preferably, an open sleeve 73 is slidably sleeved on the guide slide rod 72. Preferably, the bottom of the open sleeve 73 away from the guide slide rod 72 is connected with a transverse mounting strip 74. Preferably, the transverse mounting strip 74 is connected with the warping pressing limiting plate 76 through a support connecting strip 75, so that the warping pressing limiting plate 76 can be lowered to press against the surface of the paperboard. Preferably, the open sleeve 73 has a rectangular cavity matching the plug-in sleeve sliding rod body of the guide slide rod 72, thereby defining the stability of the directional sliding of the open sleeve 73 on the guide slide rod 72. Preferably, a locking screw is inserted on the side surface of the open sleeve 73, so that after the open sleeve 73 slides along the guide slide rod 72 and moves to the specified position, the locking screw is screwed through the open sleeve 73 and abuts against the surface of the guide slide rod 72, thereby adjustably fixing the working position of the open sleeve 73 on the guide slide rod 72. The two warping limiting plates 76 provided in the application can be lifted and translated in a positional arrangement manner on both sides of the indentation wheel 41, so that during the pressing of the paperboard by the indentation wheel 41, the warping limiting plate 76 can effectively suppress the folding and lifting of the two sides caused by the middle part of the paperboard, so that the paperboard as a whole still maintains a flat state, effectively avoiding the adverse phenomena such as lifting and displacement of the paperboard during the indentation processing of the paperboard, thereby ensuring the precision and quality of the indentation.
[0034] Preferably, the four fourth lifting rods 71 provided in this application are respectively arranged at the four corners of the rectangular surface in a manner that forms a rectangular frame, wherein, for example... Figure 1 As shown, two fourth lifting rods 71, positioned on the same longitudinal horizontal line, are connected to both ends of the same guide slide rod 72. Two open sleeves 73 are fitted onto the same guide slide rod 72, and these two open sleeves 73, fitted onto the two parallel guide slide rods 72 and positioned on the same transverse horizontal line, are connected to the same transverse mounting strip 74. Preferably, multiple supporting connecting strips 75 are provided on the lower surface of the transverse mounting strip 74 to ensure the stability of the warping pressure plate 76's positioning.
[0035] Preferably, multiple pressing rollers 761 are spaced and embedded on the bottom surface of the warp limiting plate 76, and the rolling ring surface of the pressing rollers 761 is covered with an anti-slip elastic rubber sleeve. This ensures that the pressing rollers 761 maintain effective contact with the cardboard while maintaining rolling contact with the oriented and translated cardboard. This effectively limits the shape and creasing posture of the cardboard while ensuring the stability of the cardboard's translation, thereby effectively preventing warping and displacement of the cardboard during the creasing process, and ensuring the accuracy and effect of the creasing. Preferably, the warp limiting plate 76 maintains rolling contact with the cardboard through the pressing rollers 761, so as to ensure effective translation of the cardboard while pressing down to limit its shape, avoiding the defect of conventional plate pressing and shaping that hinders the translation of the cardboard.
[0036] Preferably, the electrical components involved in this application, such as the transmission drive motor 24, the first lifting rod 45, the second lifting rod 51, the drive pump 57, the third lifting adjustment rod 62, and the fourth lifting rod 71, are all electrically connected to the controller and the power supply. The control method of this application is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is only used to protect the mechanical device and its mechanical structural features. Therefore, this utility model will not explain the control method and circuit connection in detail.
[0037] The surface connection method between components not explicitly specified in this application may be a conventional bolt connection, a snap-fit connection, or a fixed connection method such as welding. As a conventional connection method, this application will not elaborate further on this part.
[0038] The utility model is not limited to the above optional implementation, anyone can draw other various forms of product under the enlightenment of the utility model, but no matter make any change in its shape or structure, all the technical schemes falling into the scope defined by the utility model claims are within the protection scope of the utility model. The utility model specification and its drawings should be understood as illustrative rather than limiting the claims. The protection scope of the utility model is defined by the claims and its equivalents. In the full text, the features guided by "preferably" are only optional ways, and should not be understood as necessarily setting, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.
Claims
1. A creasing tool for paperboard bending, comprising a mounting plate (1), characterized in that a conveying assembly (2) and a support frame (3) are supported on the mounting plate (1), and a creasing assembly (4) and a wetting assembly (5) are suspended on the support frame (3) above the conveying plane defined by the conveying assembly (2), an auxiliary support mechanism (6) is further connected to the support frame (3) below the conveying plane defined by the conveying assembly (2) to assist the creasing assembly (4) in creasing processing, a pressing limiting mechanism (7) capable of limiting paperboard is further arranged on both sides of the creasing wheel (41) of the creasing assembly (4), wherein the pressing limiting mechanism (7) and the wetting assembly (5) are arranged upstream of the creasing assembly (4). The creasing assembly (4) comprises a creasing wheel (41), a polygonal crossbar (42), an alignment connecting rod (43), a suspended base plate (44), and a first lifting rod (45), wherein 2. The creasing tool for paperboard bending according to claim 1, characterized in that, the creasing wheel (41) is adjustably sleeved on the polygonal crossbar (42), and both ends of the polygonal crossbar (42) are connected with the alignment connecting rod (43), both ends of the two alignment connecting rods (43) are connected to the bottom surface of the suspended base plate (44) away from the axial end of the polygonal crossbar (42), and the suspended base plate (44) is connected with the top mounting plate (32) of the support frame (3) through the first lifting rod (45). The creasing wheel (41) comprises a roller body (411) with a creasing ring edge (412) connected to the outer ring wall, a sleeve bearing body (413) coaxially inserted into the roller body (411), and a locking sleeve (414) inserted into the inner ring of the sleeve bearing body (413), wherein 3. The creasing tool for paperboard bending according to claim 2, characterized in that, the sleeve (414) is adjustably sleeved on the polygonal crossbar (42). The fourth lifting rod (71) of the pressing limiting mechanism (7) is arrayed connected to the bottom surface of the top mounting plate (32) of the support frame (3), and the axial lower end of the two fourth lifting rods (71) is connected with both ends of the guide slide rod (72); 4. The creasing tool for paperboard bending according to claim 3, characterized in that, an open sleeve (73) is slidably sleeved on the guide slide rod (72), and the open sleeve (73) is connected with a transverse mounting strip (74) away from the bottom of the guide slide rod (72); the transverse mounting strip (74) is connected with a warping pressure limiting plate (76) through a support connecting strip (75). A plurality of pressing rollers (761) are embedded on the bottom surface of the plate body of the warping pressure limiting plate (76).
5. The creasing tool for paperboard bending according to claim 4, characterized in that, The second lifting rod (51) of the wetting assembly (5) is mounted on the top mounting plate (32), 6. The creasing tool for paperboard bending according to claim 5, characterized in that, a liquid storage tank (52) is connected to the axial lower end of the second lifting rod (51), and the bottom of the liquid storage tank (52) is connected with a liquid guide cavity plate (55) through arrayed positioning connecting rods (54), the liquid guide cavity plate (55) is communicated with the liquid storage tank (52) through a liquid discharge pipe (53), The lower surface of the liquid guiding cavity plate (55) is spacedly installed with a plurality of nozzles (56), A driving pump (57) for driving the wetting liquid to be pressurized and discharged is further arranged at the output port of the liquid storage tank (52).
7. The creasing tool for paperboard bending according to claim 6, characterized in that, The top mounting plate (32) of the support frame (3) is suspended on the mounting plate (1) through the support columns (31) connected with the corners thereof.
8. The creasing tool for paperboard bending according to claim 7, characterized in that, The conveying assembly (2) comprises a support frame (21), transmission rollers (22), parallel conveying belts (23) and a conveying drive motor (24), wherein, The support frame (21) is supported on the mounting plate (1), and the support frame (21) rotatably supports two transmission rollers (22) above the mounting plate (1); Two parallel conveying belts (23) are sleeved on the two transmission rollers (22) and are arranged in parallel and spaced apart, and the transmission rollers (22) are further in transmission connection with the conveying drive motor (24) arranged on the support frame (21).
9. The creasing tool for paperboard bending according to claim 8, characterized in that, The auxiliary support mechanism (6) comprises a middle support plate (61) below the transmission plane defined by the parallel conveying belts (23) and connected with the support columns (31), a third lifting adjusting rod (62) supported on the middle support plate (61), and an auxiliary support plate (63) arranged on the third lifting adjusting rod (62) and between the two parallel conveying belts (23).
10. The creasing tool for paperboard bending according to claim 9, characterized in that, A chamfered batten (631) is arranged at the side edge of the auxiliary support plate (63).