CN117734237A - Folding paperboard system - Google Patents

Abstract

The invention discloses a folding paperboard system, which comprises a line-collision unit, a forming unit and a conveying unit; the line-striking unit comprises a cutter shaft assembly, wherein the cutter shaft assembly is used for forming a line-striking on the paperboard; the forming units are arranged at intervals along the conveying direction of the paper board, the forming units comprise forming driving parts and bearing parts, the bearing parts are connected with the forming driving parts, and the bearing parts are used for supporting the collision line of the paper board; the forming driving part drives the bearing part to reciprocate and circularly move along the paperboard conveying direction; the conveying unit is used for conveying the paper boards from the line collision unit to the forming unit. The invention provides a folding paperboard system, which has relatively small overall installation space, so as to solve the problem of insufficient installation space, improve the applicability of equipment and ensure higher quality of folding paperboard at high speed.

Description

Folding paperboard system

Technical Field

The invention belongs to the technical field of paperboard production lines, and particularly relates to a folding paperboard system.

Background

The folding paperboard solves the problem that a flat continuous paperboard is folded into a vertical and tidy paper stack, so that the paperboard which is not easy to transport and store originally can be transported and stored conveniently, and a customer can use the paperboard as required. The folding paperboard is widely applied in the packaging industry, mainly meets the customization demands of furniture, integral kitchens and the like, and along with the continuous increase of the customization and individuation demands, the equipment for producing continuous paperboard is correspondingly improved.

The folding cardboard apparatus comprises a transport unit, a rocking unit and a stacking unit. The conveying unit is obliquely arranged, the swinging unit realizes folding of the paperboards in a mode of simulating manual folding, and the paper stacking unit is used for stacking the folded paperboards. The transport, folding and stacking of the cardboard are arranged vertically, thus creating the problem of a high overall height of the apparatus. Such equipment is bulky, requires a high building height, and is not applicable to buildings with limited installation height. Meanwhile, the equipment is dangerous to maintain due to the higher installation space. Meanwhile, in order to improve the working efficiency of the folding paperboard equipment, a mode of improving the swinging speed is often adopted. However, due to the limited toughness of the paperboard material, redundant folds can occur in the high-speed swinging process, so that the folding quality of the paperboard is reduced.

In the prior art, folding cardboard systems comprise a line-of-sight device and a forming device. At present, continuous corrugated boards mainly comprise two types of flute profiles: single corrugated three-layer board and double corrugated five-layer board. When the carton is subjected to line-striking, two types of edge types are required to be switched, each time the edge type is changed, the line-striking cutter is required to be changed once, each time the cutter is changed, a professional maintenance person is required to carefully adjust and test for 2-4 hours, and the ideal line-striking effect can be achieved. When the types and the quantity of the orders are not large, the adjustment mode can meet the production requirement, but with the increase of the types and the quantity of the orders and the shortening of the supply time, the mode can not meet the production requirement.

Therefore, the folding paperboard device is developed, the whole installation space is relatively small, so that the problem of insufficient installation space is solved, the applicability of equipment is improved, the higher quality of the folding paperboard can be ensured at high speed, and the folding paperboard device is a technical problem to be solved.

Disclosure of Invention

In view of the problems identified in the background art, the present invention provides a folding cardboard system, the overall installation space of which is relatively small, to solve the problem of insufficient installation space, to improve the applicability of the apparatus, and to ensure a higher quality of the folding cardboard at a high speed.

In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme:

a folding carton system comprising a striker line unit, a forming unit, and a conveying unit; the line-striking unit comprises a cutter shaft assembly, wherein the cutter shaft assembly is used for forming a line-striking on the paperboard; the forming units are arranged at intervals along the conveying direction of the paper board, the forming units comprise forming driving parts and bearing parts, the bearing parts are connected with the forming driving parts, and the bearing parts are used for supporting the collision line of the paper board; the forming driving part drives the bearing part to reciprocate and circularly move along the paperboard conveying direction; the conveying unit is used for conveying the paper boards from the line collision unit to the forming unit.

In some embodiments of the present application, the transport unit includes a fourth timing belt assembly disposed along a transport direction of the cardboard.

In some embodiments of the present application, the striker line unit further comprises a gap adjustment assembly; the cutter shaft assembly comprises a first cutter shaft assembly and a second cutter shaft assembly; the first cutter shaft assembly comprises a first cutter shaft, and a first latch blade and a second latch blade which are arranged at intervals in the radial direction of the first cutter shaft; the second cutter shaft assembly comprises a second cutter shaft, and a first latch blade and a second latch blade which are arranged at intervals in the radial direction of the second cutter shaft; the first cutter shaft and the second cutter shaft are arranged in parallel, and the relative positions of the first and second latch blades on the first cutter shaft are different from the relative positions of the first and second latch blades on the second cutter shaft; the gap adjusting assembly is used for adjusting the gap between the first cutter shaft assembly and the second cutter shaft assembly.

In some embodiments of the present application, the gap adjustment assembly includes a drive shaft and two second drive members connected at both ends thereof; the first cutter shaft assembly further comprises two first transmission parts and two first cutter shaft adjusting seat assemblies, the first cutter shaft adjusting seat assemblies are of eccentric structures, the first transmission parts are connected to the first cutter shaft adjusting seat assemblies, and two ends of the first cutter shaft are respectively connected with the two first cutter shaft adjusting seat assemblies in a rotating mode; wherein the second transmission part drives the first transmission part to rotate.

In some embodiments of the present application, the feeding device further comprises a feeding unit, wherein the feeding unit comprises a sucker assembly, a feeding driving assembly and two feeding guiding units, and the two feeding guiding units are oppositely arranged on two sides of the paperboard in the width direction.

In some embodiments of the present application, the support member comprises a support member, a plurality of support members, and a plurality of guide members.

In some embodiments of the present application, the forming driving part comprises two linear motors, the supporting part comprises a supporting rod, the two linear motors are respectively connected to two ends of the supporting rod, the forming guiding unit further comprises a forming sliding block, the linear motors and the supporting rod are arranged on the forming sliding block, and the forming sliding block can move along the annular guide rail.

In some embodiments of the present application, the forming drive member comprises two chain assemblies or first timing belt assemblies disposed opposite each other on both sides of the board in the width direction; the chain assembly comprises a plurality of chains, and the chains are arranged at intervals along the width direction of the paperboard; the first synchronous belt assembly comprises a plurality of first synchronous belts which are arranged at intervals along the width direction of the paperboard; the supporting component is a supporting rod, and two ends of the supporting rod are respectively connected with the chains or the first synchronous belts positioned on two sides of the width direction of the paperboard.

In some embodiments of the present application, the device further comprises a lifting platform unit disposed at a rear end of the forming unit in the cardboard conveying direction; the lifting platform unit comprises a lifting assembly, a rotating assembly and a cutting assembly, wherein the lifting assembly can reciprocate along the height direction and is used for supporting the folded paper boards conveyed from the forming unit and lifting according to the stacking amount of the folded paper boards; the rotating component can drive the lifting component to reciprocally rotate in a range from being close to the forming unit to being far away from the forming unit; the cutting assembly is used for cutting the paperboard.

In some embodiments of the present application, the lift assembly includes a main lift module and an auxiliary lift module; the main lifting module comprises a main driving part and a main supporting plate, wherein the main driving part can drive the main supporting plate to reciprocate along the height direction; the auxiliary lifting module comprises an auxiliary driving part and an auxiliary supporting plate, wherein the auxiliary driving part can drive the auxiliary supporting plate to reciprocate along the height direction; the auxiliary supporting plate can stretch from a conveying direction close to the paperboard to a conveying direction far away from the paperboard; wherein the lowest position of the main support plate moving range is lower than the highest position of the auxiliary support plate moving range.

Compared with the prior art, the invention has the advantages and positive effects that:

carrying out line-striking on the paperboard by arranging a line-striking unit; the paperboard after the line collision is conveyed from the line collision unit to the forming unit by arranging the conveying unit; through setting up the shaping unit of a plurality of independent removal, the below at folding cardboard's meeting line department of bearing respectively, shaping unit includes shaping drive part and bearing part, and shaping drive part drive bearing part is along the reciprocal cyclic motion of cardboard direction of delivery, and adjacent bearing part's travel speed is different, and the travel speed of folding cardboard meeting line department by bearing part bearing is then different to utilize the gravity of folding cardboard and the travel speed difference of folding cardboard meeting line department, realize the folding of cardboard. According to the structural characteristics of the device, the device can be obtained, the occupied space is relatively small, the height is low, the operation risks of installation and maintenance personnel are reduced, and the applicability of the arrangement is improved; and can realize higher folding speed, guarantee the folding quality of cardboard equally.

Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a front view of a striker line unit of an embodiment of the present invention;

FIG. 2 is a side view of a striker wire unit of an embodiment of the present invention;

FIG. 3 is a front view of a frame assembly of a striker wire unit in accordance with one embodiment of the present invention;

fig. 4 is a front view of a first arbor assembly of a striker wire unit of an embodiment of the present invention;

fig. 5 is a side view of a first arbor assembly of a striker wire unit of an embodiment of the present invention;

FIG. 6 is a front view of a second transmission assembly of a striker wire unit in accordance with an embodiment of the present invention;

fig. 7 is a front view of a gap adjustment assembly and a first arbor assembly of a striker wire unit of an embodiment of the present invention;

FIG. 8 is a front view of a detection assembly of a striker line unit in accordance with an embodiment of the present invention;

FIG. 9 is a front view of a controller of a striker unit of an embodiment of the present invention;

FIG. 10 is a top view of a first embodiment of a molding unit of the present invention;

FIG. 11 is a partial enlarged view of D in FIG. 10;

FIG. 12 is a cross-sectional view taken at A-A of FIG. 10;

FIG. 13 is an enlarged view of a portion of FIG. 12 at E;

FIG. 14 is a side view of a first embodiment of the present invention;

fig. 15 is a partial enlarged view of F in fig. 14;

FIG. 16 is a cross-sectional view taken at C-C of FIG. 14;

FIG. 17 is a side view of a second embodiment of a molding unit of the present invention;

FIG. 18 is a schematic overall structure of a first embodiment of the present invention;

FIG. 19 is a side view of the lift assembly of the present invention;

FIG. 20 is a schematic view of the structure of the accessory support plate of the lift assembly of the present invention ready to receive a formed paperboard;

FIG. 21 is a schematic view of the structure of the accessory support plate of the lift assembly of the present invention in an operative condition;

FIG. 22 is a schematic view of the structure of the lift assembly of the present invention with the accessory support plate retracted and the main support plate ready to receive a formed paperboard;

FIG. 23 is a schematic view of the operation of the main support plate of the lift assembly of the present invention;

FIG. 24 is a schematic view of the severing assembly of the present invention severing a sheet of paper;

FIG. 25 is a schematic view of a rotating assembly of the present invention for rotating a lifting assembly to a vertical position;

Reference numerals:

1000, a line-collision unit;

1100, a first arbor assembly;

1110, a first arbor;

1120, a first arbor adjustment seat assembly;

1121, a first arbor bearing;

1122, a first arbor adjusting bearing seat;

1130, a first motor;

1131, a fuel tank;

1141, a first arbor gear;

1200, a second arbor assembly;

1220, a second motor;

1221, a second motor mount;

1230, a second transmission assembly;

1231, a second elastic coupling;

1232, a second arbor gear;

1233, second gear shaft bearings;

1234, a second gear shaft;

1310, a first striker blade;

1320, a second striker blade;

1400, a frame assembly;

1410, powered side wall panels;

1411, power side wall panel locating holes;

1420, passive side wall panel;

1421, passive sidewall panel positioning holes;

1430, upper cross member;

1440, lower beam;

1450, a base plate;

1500, a gap adjustment assembly;

1510, a drive shaft;

1520, a second transmission member;

1530, gap adjusting speed reducer;

1540, gap-adjusting motor;

1550, a first transmission member;

1600, a detection component;

1610, measuring wheel;

1611, a paperboard;

1620, an encoder;

1630, rocker arm plate;

1640, lifting and releasing the cylinder;

1650, a spindle;

1660, a support frame;

1670, encoder seat;

1680, counterweights;

1690, fish eye joint;

1700, a controller;

2000, a conveying unit;

2100, a fourth timing belt drive;

2200, a fourth synchronous belt driven wheel;

2300, fourth timing belt;

3100, a shaping unit;

3110, linear motor;

3120, levers;

3130, a chain;

3200, forming a guide unit;

3210, an annular guide rail;

3220, shaping the slider;

3300, feeding units;

3311, suction cup;

3312, a cross beam;

3321, feeding slide block;

3322, a feed rail;

3331, a second timing belt drive;

3332, a second timing belt driven pulley;

3333, second timing belt;

3341, third timing belt drive pulley;

3342, third timing belt driven pulley;

3343, third timing belt;

3351, feeding motor;

3352, feeding speed reducer;

3360, feeding shaft;

3400, a frame;

3410, a carrier plate;

3420, a frame body;

4000, lifting the platform unit;

4100, lifting assembly;

4110, a main lift module;

4111, main support plate;

4112, primary rack;

4113, main gear;

4120, an auxiliary lifting module;

4121 an accessory support plate;

4122 an auxiliary rack;

4123 an auxiliary gear;

4200, rotating assembly;

4210, a first conveying unit;

4300, cutting off the assembly;

5000, a second conveying unit.

Description of the embodiments

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

In order to achieve folding of the continuous board, the folding board system in this embodiment includes a line-striking unit and a forming unit, and in order to achieve conveyance of the board from the line-striking unit to the forming unit, a conveying unit is further provided. In order to facilitate the collection and transportation of the folded paperboard, a conveying unit is also arranged.

In this embodiment, as shown in fig. 18, a line-striking unit, a conveying unit, a forming unit, and a lifting platform unit are sequentially provided along the conveying direction of the cardboard.

At present, the personalized demand of the carton packaging market is continuously increased, and the demand for continuous corrugated boards is also increased, wherein the continuous corrugated boards mainly comprise two types of flute shapes: the corrugated three-layer board and the corrugated five-layer board respectively correspond to one type of the line-striking cutter, and the corresponding line-striking cutters have different gaps. If the machine is stopped for tool changing, gap adjustment and testing, the machine is stopped for a plurality of hours. With the increase of order types and quantity and the shortening of the supply time, the shutdown tool changing form is difficult to meet the demands of users.

In this embodiment, as shown in fig. 1 and 2, the line-of-sight unit includes a cutter shaft assembly including a first cutter shaft assembly 1100 and a second cutter shaft assembly 1200.

Wherein, as shown in fig. 1, the first arbor assembly 1100 is disposed parallel to the second arbor assembly 1200.

In this embodiment, the first arbor shaft assembly 1100 includes a first arbor shaft 1100, a first striker blade 1310, and a second striker blade 1320.

The first striker wire blade 1310 extends along the length of the first arbor 1100.

The second striker wire blade 1320 extends along the length of the first arbor 1100.

The first and second striker blades 1310 and 1320 provided on the first cutter shaft 1100 are spaced apart.

In this embodiment, the second arbor assembly 1200 includes a second arbor shaft, a first striker blade 1310, and a second striker blade 1320.

The first striker wire blade 1310 extends along the length of the second arbor.

The second striker wire blade 1320 extends along the length of the second arbor.

The first and second striker blades 1310 and 1320 provided on the second cutter shaft are spaced apart.

To ensure that only two first and second striker blades 1310, 1320 are in contact during production, no additional crease is made to the cardboard, the angle between the first and second striker blades 1310, 1320 on the first arbor 1100 is different from the angle between the first and second striker blades 1310, 1320 on the second arbor.

Specifically, as shown in fig. 5, the number of first striker blades 1310 on the first arbor 1100 is one, the number of second striker blades 1320 on the first arbor 1100 is one, the number of first striker blades 1310 on the second arbor is one, and the number of second striker blades 1320 on the second arbor 110 is one.

In this embodiment, as shown in fig. 1, in order to support the first arbor shaft assembly 1100 and the second arbor shaft assembly 1200, a frame assembly 1400 is further provided.

As shown in fig. 1 and 3, the frame assembly 1400 includes a powered side wall panel 1410, a passive side wall panel 1420, an upper cross member 1430, a lower cross member 1440, and two spaced apart base plates 1450.

Specifically, the power side wall plate 1410 and the passive side wall plate 1420 are respectively disposed on two bottom plates 1450 disposed at intervals.

Both ends of the upper beam 1430 are respectively connected with the dynamic side wall plate 1410 and the passive side wall plate 1420.

The two ends of the lower beam 1440 are respectively connected with the power side wall plate 1410 and the passive side wall plate 1420.

The first cutter shaft assembly 1100 and the second cutter shaft assembly 1200 are rotatably connected relative to the power side wall plate 1410 and the passive side wall plate 1420.

The first line-striking blade 1310 on the first arbor 1100 and the line-striking blade 1310 on the second arbor are realized by the rotation of the first arbor 1100 relative to the power side wall plate 1410 and the passive side wall plate 1420, and the rotation of the second arbor relative to the power side wall plate 1410 and the passive side wall plate 1420. Or to implement the line of the second line of sight blade 1320 on the first arbor 1100 with the second line of sight blade 1320 on the second arbor.

In this embodiment, in order to achieve the gap between the first arbor assembly 1100 and the second arbor assembly 1200, a gap adjustment assembly 1500 is further provided.

The gap adjustment assembly 1500 is attached to the passive sidewall plate 1420.

The gap adjusting assembly 1500 is mainly used for adjusting the gap between the first arbor 1100 and the second arbor, so as to ensure that the required gap can be automatically adjusted when different ribs are produced.

To achieve gap adjustment between the first arbor 1100 and the second arbor to accommodate different striker plates and different paperboard thicknesses, the first arbor assembly 1100 further includes two first arbor adjustment mount assemblies 1120 and two first transmission members 1550.

As shown in fig. 4, the first arbor adjustment mount assembly 1120 includes a first arbor bearing 1121 and a first arbor adjustment mount 1122.

The two ends of the first cutter shaft 1100 are rotatably connected with the two first cutter shaft adjusting seats 122 through the first cutter shaft bearings 1121.

The two first arbor adjusting holders 122 are respectively disposed on the power sidewall 1410 and the passive sidewall 1420.

The first transmission member 1550 is connected to the first arbor adjustment seat 122.

The gap adjusting assembly 1500 includes a driving shaft 1510 and two second driving parts 1520 connected to both ends of the driving shaft 1510, respectively.

The second transmission member 1520 drives the first transmission member 1550 to rotate, thereby sequentially driving the first arbor adjusting holder 122 and the first arbor 1100 to rotate.

In this embodiment, the first arbor adjusting seat 122 adopts an eccentric structure.

The first cutter shaft 1100 rotates relative to the first cutter shaft adjusting seat assembly 1120, so that the first cutter shaft 1100 moves along the horizontal direction and the vertical direction.

In the present embodiment, the purpose of the gap adjustment is mainly to adapt to different cardboard thicknesses, so the displacement of the first arbor adjusting seat 122 along the vertical direction is greater than the displacement along the horizontal direction.

In this embodiment, the second cutter shaft is rotatably connected to the power sidewall plate 1410 and the passive sidewall plate 1420.

The first transmission member 1550 may be a lash-adjusting ring gear.

The gap-adjusting large gear ring is made of 45 steel through quenching and tempering and precision machining.

Specifically, as shown in fig. 7, the first transmission member 1550 is a segment of a gap-adjusting ring gear, and is fixed to the first arbor adjusting seat 122 by a fastener.

The second transmission member 1520 employs a lash adjustment pinion.

The gap adjusting pinions on both sides of the first cutter shaft 1100 are respectively installed on a power side wall plate positioning hole 1411 and a passive side wall plate positioning hole 1421 which are formed in the power side wall plate 1410 and the passive side wall plate 1420, and can rotate at will.

The gap adjusting small gear is meshed with the gap adjusting large gear ring.

In this embodiment, in order to realize driving of the backlash pinion, a backlash driving part is further provided, and the backlash driving part includes a backlash reducer 1530 and a backlash motor 1540. The gap adjusting motor 1540 drives the gap adjusting speed reducer 1530 to rotate through the transmission shaft 1510, and the transmission shaft 1510 drives the gap adjusting pinion gears at two ends of the gap adjusting speed reducer to rotate, so that the gap adjusting large gear rings at two ends of the first cutter shaft 1100 are driven to rotate, and the first cutter shaft adjusting seat 122 rotates relative to the first cutter shaft 1100. Thereby achieving adjustment of the gap of the first arbor 1100 relative to the second arbor.

The transmission shaft 1510 is made of 45 steel, and is subjected to thermal refining and precision machining.

The gap adjusting speed reducer 1530 is a hole type worm gear speed reducer sleeved with one end of the transmission shaft 1510, and transmits torque through key connection.

The gap reducer 1530 secures the passive sidewall plate 1420 by bolts.

The gap adjusting motor 1540 is mounted on the input end of the gap adjusting speed reducer 1530, and is fixed to the gap adjusting speed reducer 1530 by bolts.

In this embodiment, as shown in fig. 6, in order to drive the first arbor 1100 to rotate relative to the first arbor adjusting seat 122, the first arbor assembly 1100 further includes a first motor 1130 and a first transmission assembly, and the first motor 1130 drives the first arbor 1100 to rotate through the first transmission assembly.

The first motor 1130 adopts a permanent magnet synchronous servo motor, and the line collision precision is high and the efficiency is high.

The first motor 1130 is mounted to the oil tank 1131 through a first motor mount, and the oil tank 1131 is fixed to the power side wall plate 1410 through bolts.

The oil tank 1131 is formed by welding high-quality steel, aging and precisely machining a machining center.

Specifically, the first drive assembly includes a first resilient coupling, a first gear shaft bearing, a first gear shaft, and a first arbor gear 1141.

The first gear and the first gear shaft are made of 20CrMnTi materials through precise gear grinding, and the first gear can achieve five-level precision.

The first gear is mounted on the first motor mount through a first gear shaft bearing.

The motor shaft of the first motor 1130 is coaxial with the first gear shaft.

The first elastic coupling is used for connecting the motor shaft of the first motor 1130 with the first gear shaft, so that the shaft and the bearing thereof can be effectively protected, and the operation is more stable.

The first gear meshes with the first arbor gear 1141, transferring power to the first arbor gear 1141.

The first arbor gear 1141 is coupled to the first arbor 1100 at an end of the power sidewall plate 1410.

The first cutter shaft 1100 and the second cutter shaft move relatively to make a line according to the requirement of a specific order for the line. When the continuous paper board is input from one side of the line-striking unit, a detecting assembly 1600 is required to detect the length of the input continuous paper board, so as to control the relative movement time of the first cutter shaft 1100 and the second cutter shaft, and thus determine the line-striking position on the continuous paper board.

In this embodiment, since the first cutter shaft 1100 has a certain adjustment amount in the vertical direction, so as to adjust the gap between the first cutter shaft 1100 and the second cutter shaft, in order to ensure the transmission precision between the first cutter shaft gear 1141 and the first gear, the first cutter shaft gear 1141 and the first gear are disposed along the horizontal direction.

In this embodiment, to drive the second cutter shaft to rotate, the second cutter shaft assembly 1200 further includes a second motor 1220 and a second transmission assembly 1230, and the second motor 1220 drives the second cutter shaft to rotate through the second transmission assembly 1230.

The second motor 1220 adopts a permanent magnet synchronous servo motor, and the line collision precision is high and the efficiency is high.

The second motor 1220 is mounted to the oil tank 1131 through a second motor mount 1221.

Specifically, second transmission assembly 1230 includes a second resilient coupling 1231, a second gear shaft 1234, a second gear shaft bearing 1233, a second gear shaft 1234, and a second arbor gear 1232.

The second gear shaft 1234 and the second gear shaft 1234 are made of 20CrMnTi materials, and the second gear shaft 1234 can achieve five-level precision.

Second gear shaft 1234 is mounted to second motor mount 1221 by a second gear shaft bearing 1233.

The motor shaft of the second motor 1220 is coaxial with the second gear shaft 1234.

The second elastic coupling 1231 is used to connect the motor shaft of the second motor 1220 and the second gear shaft 1234, so as to effectively protect the shaft and its bearings, and make the operation more stable.

The second gear shaft 1234 meshes with the second cutter shaft gear 1232, transmitting power to the second cutter shaft gear 1232.

A second arbor gear 1232 is coupled to an end of the second arbor at the power sidewall plate 1410.

In this embodiment, as shown in FIG. 8, the detection assembly 1600 includes a gauge wheel 1610, an encoder 1620, a rocker arm plate 1630, a lift cylinder 1640, and a carrier plate 1611.

The measuring wheel 1610 is in rolling contact with the continuous web and the encoder 1620 is coaxially connected to the measuring wheel 1610.

To ensure that there is no slip between the gauge wheel 1610 and the continuous sheet of paper, the surface of the gauge wheel 1610 is knurled to increase the coefficient of friction.

The paper supporting plate 1611 is used for supporting the measuring wheel 1610, so as to ensure the stability during detection.

To effect the mounting of the encoder 1620, an encoder seat 1670 is also provided, the encoder serving to support the rotation of the measuring wheel 1610 by means of bearings.

An encoder 1620 is coaxially connected to the measuring wheel 1610 at one end of the rocker arm plate 1630.

The output of lift cylinder 1640 is connected to the other end of rocker arm plate 1630 and there is provided a counterweight 1680.

In order to avoid the influence of installation errors and other factors on the motion of the lift and release cylinder driving rocker arm plate 1630 and thus the measuring wheel 1610, a fisheye fitting 1690 is provided at the output end of the lift and release cylinder 1640. The output end of the lift cylinder 1640 is connected to the weight 1680 and the rocker arm plate 1630 via a fisheye fitting 1690.

To achieve the rotatable connection of the rocker arm plate 1630 to the upper cross beam 1430, a pivot shaft 1650 and a support bracket 1660 are also provided.

The pivot 1650 is attached to the upper cross member 1430 via a support bracket 1660.

The middle portion of the rocker arm plate 1630 is rotatably coupled to a pivot 1650.

The fixed end of the lift cylinder 1640 is connected to the support 1660.

With the expansion and contraction of the lift cylinder 1640, the up-and-down movement of the measuring wheel 1610 is realized, thereby realizing random floating according to the thickness of the cardboard.

In this embodiment, as shown in fig. 9, in order to realize control of the first motor 1130, the second motor 1220, the gap adjusting motor 1540, and collection of signals of the encoder 1620, a controller 1700 is further provided, the controller 1700 adopts a servo controller, and the controller 1700 is electrically connected to the first motor 1130, the second motor 1220, the gap adjusting motor 1540, and the encoder 1620.

The encoder 1620 detects the board speed or board length signal and transmits it to the controller 1700, which controls the first motor 1130 and the second motor 1220 to perform a line-up action based on the length of the current order.

Meanwhile, according to the prismatic shape of the current order, the line-striking knife type is automatically switched, the gap adjusting motor 1540 is controlled to adjust the gap, the shutdown waiting time is not needed, and the efficiency is improved.

In this embodiment, the continuous paper board is transported to the forming unit through the transporting unit after passing through the line-striking unit through the above steps.

In the present embodiment, as shown in fig. 18, the conveying unit conveys in the form of synchronous belt conveyance. Specifically, the conveying unit includes a fourth timing belt assembly including a fourth timing belt driving wheel 2100, a fourth timing belt driven wheel 2200, and a fourth timing belt 2300, the fourth timing belt 2300 being disposed along a conveying direction of the cardboard.

In this embodiment, the continuous cardboard is transported from the transport unit to the forming unit, and as shown in fig. 10, 12 and 14, the folding cardboard is changed from horizontal to folding by the folding cardboard device, and the structure playing a key role includes the forming unit 3100.

The number of the molding units 3100 is plural, and the plural molding units 3100 are arranged at intervals and reciprocate along a certain trajectory.

The plurality of forming units 3100 are in turn used to support adjacent paperboard lines of impact.

By setting the speeds of the plurality of forming units 3100 to be different from each other. The speed of the plurality of forming units 3100 gradually decreases along the conveying direction of the folded paperboard. The plurality of forming units 3100 form a speed differential to effect folding of the paperboard at the line of impact.

In this embodiment, the molding unit 3100 includes a molding driving part and a supporting part.

The forming driving part drives the bearing part to reciprocate and circulate, and the moving speed of the bearing part is controlled by the forming driving part in the process that the forming driving part drives the bearing part to move along the paperboard conveying direction, so that the folding of the paperboard is realized.

In this embodiment, in order to define a moving track of the forming driving part, the cyclic reciprocation of the forming unit 3100 is implemented, and the folding cardboard apparatus further includes a forming guide unit 3200.

As shown in fig. 12, 14, and 15, the mold guide unit 3200 includes a circular guide 3210.

The number of the molding guide units 3200 is two, and the two molding guide elements 200 are oppositely disposed at both sides of the width direction of the folding paperboard.

The annular guide 3210 is provided in the vertical direction.

Both ends of the molding unit 3100 are moved along two ring rails 3210, respectively.

When the forming unit 3100 moves along the annular guide rail 3210 in the same direction as the moving direction of the paper board, the supporting member contacts with the line where the paper board is folded, and the paper board is folded during the moving process.

When the forming unit 3100 moves in a direction opposite to the moving direction of the board along the circular guide 3210, the forming unit 3100 is unloaded and rapidly moves.

Specifically, the molding drive component includes two linear motors 3110. The support member includes a support bar 3120.

Both ends of the supporting rod 3120 are respectively connected with a linear motor 3110, and the supporting rod 3120 is driven by the linear motor 3110 to move along the annular guide rail 3210.

As shown in fig. 15, the mold guide unit 3200 further includes a mold slider 3220. The linear motor 3110 and the support rod 3120 are both disposed on the molding slider 3220. The linear motor 3110 and the support rod 3120 are connected to the molding slider 3220. The linear motor 3110 drives the molding slider 3220 along the circular guide 3210, thereby driving the support rod 3120 to move along the circular guide 3210.

In this embodiment, a control box is further included, and the control box is electrically connected to the linear motor 3110. The control box is used for controlling the moving speed of the linear motor 3110 along the annular guide 3210 and starting and stopping of the linear motor 3110.

The number of the forming units 3100 is multiple, the control box can control the linear motors 3110 to move along the annular guide rail 3210 at different speeds, and folding of the paperboards is achieved through speed matching of adjacent support rods 3120.

In actual production, when the striker position of the cardboard is transferred to the support member of the forming unit 3100, the support bar 3120 supports it under the striker position. When the front end of the support pole 3120 reaches the setting position G, the support pole 3120 at the rear end still operates at the normal speed V2, and the cardboard is gradually changed from the original horizontal to the folded shape by the gravity matching speed difference.

In this embodiment, a feeding unit 3300 is further provided to enable the folded cardboard to be conveyed to the lifting platform unit in the subsequent process.

In this embodiment, the G position is the end position of the ring rail 3210 in the board conveying direction. After the sheet is folded at G, the levers 3120 are moved in the return direction of the circular guide 3210 so that the levers 3120 are withdrawn from under the sheet. When the feeding unit 3300 can move the folded paper board from the position G to the position H, the folded paper board can naturally fall on the lifting platform unit of the subsequent process. After moving to the position H, the feeding unit 3300 moves from the position H to the position G, and the movement of the subsequent folding paper board is continuously driven.

In this embodiment, as shown in fig. 11 and 13, the feeding unit 3300 includes a suction cup assembly and a feeding driving assembly. The feeding driving assembly drives the sucker assembly to reciprocate along the conveying direction of the paper board.

In order to realize the guiding of the moving direction of the feeding driving assembly, a feeding guiding unit is also arranged.

The number of the feeding guide units is two. The two feeding guide units are respectively located at both sides of the width direction of the folded cardboard and at one side of the conveying direction of the folded cardboard, so that the folded cardboard conveyed along the forming unit 3100 is conveyed to the lifting platform unit of the subsequent process.

The feed guide unit includes a feed slide 321 and a feed rail 3322.

In particular, the chuck assembly includes a plurality of chucks 3311 and a beam 3312. A plurality of suction cups 3311 are spaced apart on the cross beam 3312.

The two feeding sliders 321 are respectively connected to two ends of the beam 3312, so that the beam 3312 moves along the feeding guide rail 3322.

The feed drive assembly includes two second timing belt assemblies, two third timing belt assemblies, a feed motor assembly, and a feed shaft 3360.

The feed motor assembly includes a feed motor 3351 and a feed speed reducer 3352.

The second timing belt assembly includes a second timing belt drive pulley 3331, a second timing belt driven pulley 3332, and a second timing belt 3333.

The second timing belt 3333 is sleeved outside the second timing belt driving wheel 3331 and the second timing belt driven wheel 3332.

The third timing belt assembly includes a third timing belt drive pulley 3341, a third timing belt driven pulley 3342, and a third timing belt 3343.

The third timing belt 3343 is sleeved outside the third timing belt driving wheel 3341 and the third timing belt driven wheel 3342.

The feeding motor 3351 drives the third synchronous belt driving wheel 3341 to rotate through the feeding speed reducer 3352, and drives the third synchronous belt driven wheel 3342 to rotate through the third synchronous belt 3343.

Two ends of the feeding shaft 3360 are respectively connected with third synchronous belt driven wheels 3342 on two sides, and the third synchronous belt driven wheels 3342 drive the feeding shaft 3360 to rotate.

Two ends of the feeding shaft 3360 are respectively connected with a second synchronous belt driving wheel 3331, and the second synchronous belt driving wheel 3331 drives the second synchronous belt 3333 to rotate.

The feeding slider 321 is connected to the second timing belt 3333. The second synchronous belt 3333 drives the beam 3312 to move along the feeding guide rail 3322 through the feeding slide 321.

The plurality of suction cups 3311 are arranged at intervals along the width direction of the folding position of the folding paperboard, and the plurality of suction cups 3311 suck the folding position of the folding paperboard and drive the folding paperboard to move from the position G along the feeding guide rail 3322, so that the folding paperboard is moved to the position above the lifting platform unit of the subsequent process and naturally falls down.

In the present embodiment, as shown in fig. 14 and 16, a frame 3400 is further provided to support the molding unit 3100, the feeding unit 3300, and the molding guide unit 3200.

The frame 3400 includes a frame body 3420 and a support plate 3410.

Two annular guide rails 3210 are provided at intervals on both sides of the frame body 3420.

Two feed rails 3322 are spaced apart on either side of the frame body 3420 and are located on one side of the annular rail 3210.

The feed motor assembly is disposed on the frame body 3420.

In this embodiment, since the feeding unit 3300 can only suck the folded portion of the folded cardboard, the lower side of the folded cardboard sags due to gravity, and in order to realize the support of the lower end of the folded cardboard, a support plate 3410 is provided.

The support plate 3410 is positioned below the plurality of support rods 3120, and both sides of the support plate 3410 are connected to both ends of the frame body 3420.

As the sheet moves from the first end of the endless track 3210 away from G to the second end closer to G, the speed of the plurality of levers 3120 gradually decreases. Accordingly, the height of the carrier plate 3410 gradually decreases from the first end of the circular rail 3210 to the second end of the circular rail. Thereby realizing the support of the folding paperboard.

In this embodiment, because the forming unit 3100 and the feeding unit 3300 are all horizontally arranged, the height of the folded paperboard device in this embodiment is lower, and therefore, the requirement of more clients on factory building height can be met, the applicability is higher, and because the forming unit 3100 is adopted to realize folding of the paperboard, the original swinging unit is replaced, the problem that redundant folds occur at high speed is solved, and the folding quality of the paperboard is ensured.

The lifting platform unit mainly stacks, cuts off, longitudinally and transversely conveys the paper board folded by the forming unit 3100. As shown in fig. 19, 20, 21, 22, 23, 24, and 25, the lift platform unit includes a lift assembly 4100, a rotation assembly 4200, a cutting assembly 4300, and a lift platform unit frame.

The feeding unit 3300 sucks up the folded sheet, which falls freely onto the lifting assembly 4100. Along with the stacking of the folded paper boards, the lifting assembly 4100 descends along the height, so that the falling height of the folded paper boards is unchanged, and further, the folded paper boards are guaranteed to have enough stacking space, and the stacking quality of the folded paper boards is guaranteed.

To facilitate transport of the folded sheets stacked on the lifting assembly 4100, a rotation assembly 4200 is also provided. The rotation assembly 4200 may reciprocate the lift assembly through a range of angles from proximate the forming unit 3100 to distal the forming unit 3100.

The lift assembly 4100 includes a main lift module 4110 and an auxiliary lift module 4120. The auxiliary lifting module 4120 is disposed above the main lifting module 4110.

When the lifting platform unit is in an empty state, the lifting platform unit is in an inclined state, and the lifting platform unit is located above the feeding unit 3300.

The main lift module 4110 includes a main drive, a main support plate 4111, and a main guide assembly.

The auxiliary elevating module 4120 includes an auxiliary driving part, an auxiliary supporting plate 4121, and an auxiliary guide assembly.

The lifting platform unit frame body comprises a vertical supporting upright post. The vertical support column may rotate with the rotating assembly 4200.

The primary guide assembly includes a primary guide rail and a primary slider.

The main driving part includes a main driving motor, a main rack 4112, and a main gear 4113.

The main slider is connected with the main rack 4112.

The main driving motor drives the main gear 4113 to rotate through the timing belt, and the main rack 4113 moves relative to the main gear 4113.

The main support plate 4111 moves along the main guide rail with the main rack 4112, enabling the main support plate 4111 to move in the height direction.

The auxiliary guide assembly comprises an auxiliary guide rail and an auxiliary sliding block.

The auxiliary driving part includes an auxiliary motor, an auxiliary rack 4122 and an auxiliary gear 4123.

The auxiliary slide block is connected with an auxiliary rack 4122.

The assist motor drives the assist gear 4123 to rotate through the timing belt, and the assist rack 4122 moves relative to the assist gear 4123.

The auxiliary supporting plate 4121 moves along the auxiliary guide rail with the auxiliary slider connected to the auxiliary rack 4122, effecting the auxiliary supporting plate 4121 to move in the height direction.

In this embodiment, an auxiliary telescopic driving portion is connected to the auxiliary supporting plate 4121, and the auxiliary telescopic driving portion can drive the auxiliary supporting plate 4121 to stretch and retract relative to the vertical supporting column.

Specifically, the auxiliary telescopic driving part comprises a telescopic conveying belt and a belt wheel. The auxiliary support plate 4121 is connected with a telescopic conveyor belt, and the pulley rotates to drive the telescopic conveyor belt to move, and the telescopic conveyor belt drives the auxiliary support plate 4121 to move.

When the folding of the sheet is completed in the forming unit 3100, the folded sheet falls on the auxiliary supporting plate 4121 by the feeding unit 3300.

The accessory support plate 4121 is in an extended state at this time, and is able to receive the free-falling folded sheet.

As the thickness of the stack of cardboard increases, the auxiliary support plate 4121 descends along the auxiliary rack 4122, and the main support plate 4111 moves to the highest position along the main rack 4112, which is the highest waiting position of the main lift module 4110.

The auxiliary supporting plate 4121 moves to the lowest position along the auxiliary rack 4122, that is, the lowest position of the auxiliary supporting plate 4121.

At this time, the auxiliary supporting plate 4121 is contracted, and the falling of the folded cardboard on the auxiliary supporting plate 4121 is transferred to the main supporting plate 4111.

As the sheet is stacked on the main support plate 4111, the main support plate 4111 descends along the main rack 4112, and the auxiliary support plate 4121 remains contracted and ascends along the auxiliary rack 4122.

Waiting for the number of folded sheets on the main support plate 4111 to reach a set number, the auxiliary support plate 4121 is protruded and inserted between the continuous sheets, and when the auxiliary support plate 4121 is protruded to the end, the cutting assembly 4300 cuts the sheets according to the width direction so that the auxiliary support plate 4121 is completely disconnected from the sheets of the main support plate 4111.

At this time, the rotation assembly 4200 drives the lifting assembly 4100 to rotate from a side close to the forming unit 3100 to a side far from the forming unit 3100, and finally to a vertical state of the lifting platform unit.

Specifically, the bottom of the rotary assembly 4200 is provided with a hinge member on a side thereof adjacent to the molding unit 3100. A support is arranged on the ground, and the hinge component can rotate relative to the support.

In this embodiment, a hydraulic cylinder is also included, which drives the rotation assembly 4200 to rotate relative to the bracket.

The bottom of the rotation assembly 4200 is provided with a first transport unit 4210. A second conveying unit 5000 is provided on a side of the rotating assembly 4200 remote from the forming unit 3100.

When the rotary assembly 4200 is rotated to the vertical direction, the first conveying unit 4210 is started, the second conveying unit 5000 is started, and the folded cardboard is conveyed from the first conveying unit 4210 to the second conveying unit 5000, so that transportation of the folded cardboard is realized.

Through the cooperation of foretell latch line unit, delivery unit, shaping unit and lift platform unit, realize folding cardboard's high-efficient, smooth and easy operation to, can not reduce folding cardboard's folding quality.

The line collision unit, the conveying unit, the forming unit and the lifting platform unit are horizontally arranged along the conveying direction of the continuous paper boards, so that the integral height of equipment of the folding paper board system is greatly reduced, the requirement of the equipment on the height of a factory building is reduced, and the applicability of the folding paper board system is improved.

In embodiment 2, in the present embodiment, as shown in fig. 17, the molded driving part adopts a different structural form from that in embodiment 1.

The forming driving part comprises two chain assemblies or first synchronous belt assemblies which are vertically arranged on two sides of the width direction of the paperboard.

In this embodiment, the chain assembly is used to move the support pole 3120.

The chain assembly includes a plurality of chains 3130, the number of chains 3130 being the same as the number of levers 3120, each lever 3120 being correspondingly coupled to one chain 3130.

Both ends of the support pole 3120 are connected to chains 3130 at both sides, respectively. Both ends of the supporting rod 3120 are respectively driven to move by the chain 3130.

The chain 3130 or first timing belt assembly is disposed annularly. Thus, the support bar 3120 follows the movement of the chain 3130, thereby enabling cyclic reciprocation of the support bar 3120.

The control box is electrically connected to chain 3130. The number of chains per set of chain assemblies is equal to the number of levers 3120. Each of the levers 3120 is independently driven by a chain 3130 to provide separate control of the speed of the different levers 3120. The gravity is matched with the speed difference so that the paperboard gradually changes into a folded shape from the original horizontal.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. A folding paperboard system, comprising:

a striker line unit comprising a cutter shaft assembly for forming a striker line on a cardboard;

the forming units are arranged at intervals along the conveying direction of the paperboards, each forming unit comprises a forming driving part and a bearing part, each bearing part is connected with each forming driving part, and each bearing part is used for supporting the corresponding collision line of the paperboards; the forming driving part drives the bearing part to reciprocate and circularly move along the paperboard conveying direction;

And a conveying unit for conveying the paper board from the line collision unit to the forming unit.

2. The folding carton system according to claim 1, wherein the conveying unit comprises a fourth timing belt assembly disposed along a conveying direction of the carton.

3. The folded paperboard system of claim 1, wherein the striker line unit further comprises a gap adjustment assembly;

the cutter shaft assembly comprises a first cutter shaft assembly and a second cutter shaft assembly; the first cutter shaft assembly comprises a first cutter shaft, and a first latch blade and a second latch blade which are arranged at intervals in the radial direction of the first cutter shaft; the second cutter shaft assembly comprises a second cutter shaft, and a first latch blade and a second latch blade which are arranged at intervals in the radial direction of the second cutter shaft; the first cutter shaft and the second cutter shaft are arranged in parallel, and the relative positions of the first and second latch blades on the first cutter shaft are different from the relative positions of the first and second latch blades on the second cutter shaft;

the gap adjusting assembly is used for adjusting the gap between the first cutter shaft assembly and the second cutter shaft assembly.

4. A folding cardboard system according to claim 3 wherein the gap adjustment assembly comprises a drive shaft and two second drive members connected at both ends thereof;

the first cutter shaft assembly further comprises two first transmission parts and two first cutter shaft adjusting seat assemblies, the first cutter shaft adjusting seat assemblies are of eccentric structures, the first transmission parts are connected to the first cutter shaft adjusting seat assemblies, and two ends of the first cutter shaft are respectively connected with the two first cutter shaft adjusting seat assemblies in a rotating mode;

wherein the second transmission part drives the first transmission part to rotate.

5. The folding paperboard system of claim 1, further comprising a feed unit comprising a suction cup assembly, a feed drive assembly, and two feed guide units disposed opposite each other on either side of the paperboard width.

6. The folding cardboard system of claim 1 further comprising two profiled guide units disposed opposite each other on either side of the cardboard width, the profiled guide units comprising an annular rail disposed in a vertical direction, the profiled drive member driving the support member along the annular rail.

7. The folding cardboard system according to claim 6, characterized in that the forming drive member comprises two linear motors, the support member comprises a support bar, the two linear motors are connected to two ends of the support bar, respectively, the forming guide unit further comprises a forming slide, the linear motors and the support bar are arranged on the forming slide, and the forming slide is movable along the annular guide rail.

8. The folding paperboard system of claim 6 wherein the forming drive component comprises two chain assemblies or first timing belt assemblies disposed opposite each other on either side of the paperboard width;

the chain assembly comprises a plurality of chains, and the chains are arranged at intervals along the width direction of the paperboard;

the first synchronous belt assembly comprises a plurality of first synchronous belts which are arranged at intervals along the width direction of the paperboard;

the supporting component is a supporting rod, and two ends of the supporting rod are respectively connected with the chains or the first synchronous belts positioned on two sides of the width direction of the paperboard.

9. The folding paperboard system of claim 1, further comprising a lifting platform unit disposed at a rear end of the forming unit in the paperboard conveying direction;

The elevating platform unit includes:

the lifting assembly can reciprocate along the height direction, is used for supporting the folded paper boards conveyed from the forming unit and lifts according to the stacking amount of the folded paper boards;

the rotating assembly can drive the lifting assembly to reciprocally rotate in a range from being close to the forming unit to being far away from the forming unit;

a severing assembly for severing the paperboard.

10. The folding paperboard system of claim 1, wherein the lifting assembly comprises:

the main lifting module comprises a main driving part and a main supporting plate, wherein the main driving part can drive the main supporting plate to reciprocate along the height direction;

the auxiliary lifting module comprises an auxiliary driving part and an auxiliary supporting plate, wherein the auxiliary driving part can drive the auxiliary supporting plate to reciprocate along the height direction; the auxiliary supporting plate can stretch from a conveying direction close to the paperboard to a conveying direction far away from the paperboard;

wherein the lowest position of the main support plate moving range is lower than the highest position of the auxiliary support plate moving range.