CN112192894B - Paperboard line pressing device - Google Patents
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- CN112192894B CN112192894B CN202011091126.6A CN202011091126A CN112192894B CN 112192894 B CN112192894 B CN 112192894B CN 202011091126 A CN202011091126 A CN 202011091126A CN 112192894 B CN112192894 B CN 112192894B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
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Abstract
The invention discloses a paperboard line pressing device which comprises at least one group of initial pressing mechanisms for outer trace pressing and trace inner pre-pressing, and a shaping mechanism which is positioned behind the last group of initial pressing mechanisms and is used for outer trace and trace inner forming, wherein the initial pressing mechanisms are sequentially arranged along the moving direction of a paperboard. The invention solves the problems that the paperboard is broken when being folded due to too narrow pressing lines, or the paperboard is poor in appearance and small in volume after being formed due to too wide pressing lines, and the existing paperboard can be folded in one direction only after being pressed. The invention is suitable for the technical field of paperboard line pressing.
Description
Technical Field
The invention belongs to the technical field of paperboard line pressing, and particularly relates to a paperboard line pressing device.
Background
In the process of producing the carton, the most important step is to press the line on the paperboard so that the paperboard can be folded along the pressed folding line. In order to avoid the fracture of the paperboard in the folding process, the conventional paperboard line pressing machine needs to roll the paperboard in multiple processes, namely, multiple different pairs of rollers are used for rolling the same indentation, so that the phenomenon of wider indentation is difficult to avoid, and the production cost of different pairs of rollers is high; when a single pair of rollers or two same rollers or different rollers are used for rolling, on one hand, the indentation forming rate is low, and on the other hand, in order to pursue that the indentation has a narrow width, the bending resistance of the paperboard is weak. Moreover, after the existing paperboard line pressing machine presses the paperboard, the paperboard can only be turned over in one direction, and the phenomenon of fracture is very easy to occur when the paperboard is turned over in the reverse direction.
Disclosure of Invention
The invention provides a paperboard line pressing device, which aims to solve the problems that the paperboard line pressing device is too narrow to break when being turned over, or the line pressing device is too wide to cause poor appearance and small volume after a carton is formed, and overcomes the defect that the existing paperboard can only be turned over in one direction after being pressed.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a cardboard cord grip, includes that the direction of motion that sets gradually along the cardboard is a set of at least and is used for the first pressure mechanism of outer trace die mould and the interior pre-compaction of trace, and is located the last set of first pressure mechanism rear be used for outer trace and the interior fashioned forming mechanism of trace, cardboard cord grip still includes prevents the perk mechanism, prevent that the perk mechanism constructs in the outside position department of cardboard indentation, and the cardboard is at the in-process through first pressure mechanism and forming mechanism, and the cardboard passes gradually and prevents the perk mechanism.
Further, the preliminary pressing mechanism comprises a plurality of preliminary pressing units arranged at intervals along the movement direction of the paperboard, each preliminary pressing unit comprises a preliminary pressing roller with the same number of folding lines required to be formed by rolling, each preliminary pressing roller comprises a lower preliminary pressing roller and an upper preliminary pressing roller which are arranged oppositely, two first annular protrusions coinciding with the axes of the lower preliminary pressing rollers are constructed on the circumferential surface of the lower preliminary pressing roller, the two first annular protrusions are arranged at intervals along the axes of the lower preliminary pressing rollers, two first annular grooves are formed in the positions, corresponding to the two first annular protrusions, on the circumferential surface of the upper preliminary pressing roller, and the corresponding first annular protrusions are matched with the first annular grooves.
Furthermore, the axial section of the circumferential surface of the first annular protrusion is a semicircle, the axial section of the circumferential surface of the first annular groove is a semicircle, and when the first annular protrusion is matched with the corresponding first annular groove and rolls the paper board, the circle center of the first annular protrusion coincides with that of the first annular groove.
Further, the number of the initial pressing mechanisms is two.
Further, the shaping mechanism comprises an outer trace shaping unit and a secondary outer trace shaping unit which are sequentially arranged along the moving direction of the paperboard, the outer trace shaping unit is used for shaping the outer trace of the paperboard folding line and primarily rolling the inner part of the outer trace, and the secondary outer trace shaping unit is used for shaping the secondary outer trace of the paperboard folding line and rolling and shaping the inner part of the secondary outer trace; the molded fold line comprises two outer marks, two secondary outer marks positioned between the two outer marks, and a shaping line positioned between the two secondary outer marks.
Further, outer trace shaping unit includes the outer trace design pair roller the same with required roll forming's broken line quantity, outer trace design pair roller is including the lower outer trace design roller and the last outer trace design roller of relative setting, be formed with the second annular groove rather than the axis coincidence on outer trace design roller global down, the axle cross-section that the second annular groove is global is convex, it constructs rather than the axis coincidence and protruding with the corresponding second annular groove second annular of second annular groove on outer trace design roller global, the axle cross-section of the protruding face of second annular is convex.
Further, the time outer mark shaping unit includes the number of the same time outer mark design pair roller with required roll forming's the fold line, time outer mark design pair roller is including the relative next outer mark design roller that sets up and last outer mark design roller, be formed with the third annular groove rather than the axis coincidence on the global of next outer mark design roller, the global axle cross-section of third annular groove is arc, last time outer mark design roller be constructed on global rather than the axis coincidence and with the corresponding third annular bulge of third annular groove, the axle cross-section of the protruding face of third annular bulge is arc, just the bellied width of second annular is greater than the bellied width of third annular, the width of second annular groove is greater than the width of third annular groove.
Further, the proof warp rises mechanism includes upper support pole and the lower support pole of misplacing about and parallel arrangement, and the two all is located the outside of broken line, the lower support pole is located between support pole and the corresponding broken line, the upper and lower terminal surface of cardboard respectively with upper support pole and the contact of lower support pole.
Furthermore, an upper bent part and a lower bent part are respectively formed at the inlet ends of the paperboards of the upper pressing rod and the lower supporting rod, the lower supporting rod is connected with a first fixing plate through a vertically arranged first adjusting rod, the upper pressing rod is connected with a second fixing plate through a vertically arranged second adjusting rod, and the first fixing plate and the second fixing plate are both fixed on the rack.
Due to the adoption of the structure, compared with the prior art, the invention has the technical progress that: in the process of pressing the line on the paperboard, the paperboard is firstly rolled by the primary pressing mechanism, so that the paperboard forms two soft forming outer marks with higher toughness, and the area between the two outer marks is rolled, so that the paperboard part in the area is pressed and deformed towards a preset single direction, and further the toughness of the paperboard in the area is improved; the selection of a plurality of groups of initial pressing mechanisms ensures that the forming rate of the rolled outer marks of the paperboard reaches up to 99.52 percent; when the initial pressing mechanism adopts 1 group, the forming rate of the outer marks is low, the forming rate is about 81.29%, the phenomenon of breakage is easy to occur in the process that the paperboard is turned inwards or outwards, and when the initial pressing mechanism adopts 2 groups or more, the forming rate of the outer marks is over 99%; the paper board pressing device adopts two different rolling mechanisms to press the paper board, and has the characteristics of narrow pressing line, straight folding line and difficult breakage of bending, so that the appearance of the formed paper box is exquisite and the volume of the formed paper box is kept to the maximum; meanwhile, the anti-tilting mechanism is adopted, so that the paperboard is kept in a horizontal state in the process of line pressing and forming, and the phenomenon that the paperboard deviates to cause line pressing at a preset position cannot be avoided; in conclusion, the invention solves the problems that the paperboard is broken when being folded due to too narrow pressing lines, or the carton is poor in appearance and small in volume after being formed due to too wide pressing lines, and the existing paperboard can be folded in one direction only after being pressed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embossing pair roller according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a secondary outer trace shaping roller according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a primary nip roll rolled paperboard in accordance with an embodiment of the present invention;
FIG. 5 is a schematic structural view of a sizing roll-rolled paperboard of an embodiment of the present invention;
FIG. 6 is a schematic structural view of a lower primary roll according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an upper primary roll according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a lower sizing roller according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of an upper sizing roller according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a lift prevention mechanism according to an embodiment of the present invention;
FIG. 11 is a schematic structural view of a paperboard after being rolled by a primary pressing roll according to an embodiment of the invention;
FIG. 12 is a schematic structural view of a paperboard after being rolled by a sizing roller according to an embodiment of the invention;
fig. 13 is a schematic structural diagram of a gap adjustment mechanism according to an embodiment of the present invention.
Labeling components: 1-a frame, 2-a lower primary press roll, 201-a first annular bulge, 202-an annular concave area, 3-an upper primary press roll, 301-a first annular groove, 302-an inner trace pressing area, 4-a lower shaping roll, 401-a fourth annular groove, 5-an upper shaping roll, 501-a fourth annular bulge, 502-a fifth annular bulge, 6-a lower support rod, 601-a lower bent part, 7-a first fixing plate, 8-a first adjusting rod, 9-an upper pressing rod, 901-an upper bent part, 10-a second fixing plate, 11-a second adjusting rod, 12-a paperboard, 1201-an outer trace, 1202-an inner extrusion area, 1203-an inner bent area, 13-a sliding block, 14-an adjusting screw rod, 15-a lower outer trace shaping roll, 1501-a second annular groove, 16-upper outer mark shaping roller, 1601-second annular bulge, 17-next outer mark shaping roller, 1701-third annular groove, 18-last outer mark shaping roller and 1801-third annular bulge.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
Example 1
The invention discloses a paperboard line pressing device, which comprises a primary pressing mechanism and a shaping mechanism, wherein the primary pressing mechanism comprises at least 1 group, 2 groups are preferably adopted in the embodiment, the two groups of primary pressing mechanisms are sequentially arranged along the movement direction of a paperboard, the shaping mechanism is positioned behind the last group of primary pressing mechanism, the primary pressing mechanism is used for paperboard external trace pressing and trace internal prepressing, and the shaping mechanism is used for external trace and trace internal shaping. The paperboard line pressing device also comprises an anti-tilting mechanism, wherein the anti-tilting mechanism is constructed at the outer side position of the paperboard indentation, and the paperboard gradually passes through the anti-tilting mechanism in the process of passing through the primary pressing mechanism and the shaping mechanism. The working principle and the advantages of the invention are as follows: in the process of pressing the line on the paperboard, the paperboard is firstly rolled by the primary pressing mechanism, so that the paperboard forms two soft forming outer marks with higher toughness, and the area between the two outer marks is rolled, so that the paperboard part in the area is pressed and deformed towards a preset single direction, and further the toughness of the paperboard in the area is improved; the selection of a plurality of groups of initial pressing mechanisms ensures that the forming rate of the rolled outer marks of the paperboard reaches up to 99.52 percent; when the initial pressing mechanism adopts 1 group, the forming rate of the outer marks is low, the forming rate is about 81.29%, the paperboard is easy to break in the process of being turned inwards or outwards, when the initial pressing mechanism adopts 2 groups or more, the forming rate of the outer marks is over 99%, so that in order to save cost and facilitate later maintenance, the initial pressing mechanism adopts 2 groups, and the forming rate of the outer marks after the 2 groups of initial pressing mechanisms roll the paperboard is 99.45%; the paper board pressing device adopts two different rolling mechanisms to press the paper board, and has the characteristics of narrow pressing line, straight folding line and difficult breakage of bending, so that the appearance of the formed paper box is exquisite and the volume of the formed paper box is kept to the maximum; meanwhile, the anti-tilting mechanism is adopted, so that the paperboard is kept in a horizontal state in the process of line pressing and forming, and the phenomenon that the paperboard deviates to cause line pressing at a preset position cannot be avoided; in conclusion, the invention solves the problems that the paperboard is broken when being folded due to too narrow pressing lines, or the carton is poor in appearance and small in volume after being formed due to too wide pressing lines, and the existing paperboard can be folded in one direction only after being pressed.
As a preferred embodiment of the invention, each set of primary pressing mechanism comprises the same number of primary pressing rollers as the number of the folding lines required to be roll-formed, as shown in fig. 4, 6-7, the primary pressing pair roller comprises a lower primary pressing roller 2 and an upper primary pressing roller 3 which are oppositely arranged, two first annular protrusions 201 are configured on the circumferential surface of the lower primary pressing roller 2, the two first annular bulges 201 are overlapped with the axial line of the lower primary pressing roll 2, the two first annular bulges 201 are arranged at intervals along the axial line of the lower primary pressing roll 2, an annular depressed area 202 is formed on the circumferential surface of the lower preliminary roller 2 and between the two first annular projections 201, two first annular grooves 301 are formed on the circumferential surface of the upper primary pressure roller 3 at positions corresponding to the two first annular protrusions 201, and the corresponding first annular protrusions 201 are fitted with the first annular grooves 301, an in-mark pressing zone 302 is formed on the circumferential surface of the upper preliminary roll 3 between the two first annular grooves 301. When the initial pressing mechanism of this embodiment rolls the paper board 12, the two first annular protrusions 201 are engaged with the two first annular grooves 301, and roll and advance the paper board 12 passing through the gap between the first annular protrusions 201 and the first annular grooves 301, so that two outer marks 1201 are formed when the paper board 12 passes through the lower initial pressing roller 2 and the upper initial pressing roller 3, the portion of the paper board 12 located between the two outer marks 1201 is rolled by the indentation pressing area 302, and the first annular protrusions 201 and the first annular grooves 301 are engaged with each other to press the extended portion of the paper board 12 rolled by the first annular protrusions 201 and the first annular grooves 301 into the annular depression area 202 by the indentation pressing area 302, so that the portion of the paper board 12 located between the two outer marks 1201 is subjected to an external force in the same or same direction, so that the paper board 12 forms the inner pressing area 1202, and thus the area of the paper board 12 is kept as a whole, therefore, higher toughness is obtained, and further, the phenomenon that when the existing rolling roller rolls is avoided, the middle of the area, located between the two outer marks 1201, of the paperboard 12 is torn, the upper layer and the lower layer protrude towards two opposite directions, namely the two layers are the upper surface and the lower surface of the paperboard 12 respectively, so that the area is divided into two parts and is irreversible, when the subsequent pressing line is formed or bent, due to the fact that the two layers bear bending external force, the paperboard is of a separated single layer and is of a non-integral structure, the toughness is lower, at least one of the upper layer and the lower layer is easy to break, and the pressing line forming rate of the paperboard 12 is greatly reduced.
As a preferred embodiment of the present invention, the circumferential surface of the first annular protrusion 201 has a semicircular axial cross-section and a radius r5，r51.4-2.6mm, the axial cross-section of the circumferential surface of the first annular groove 301 is a semicircle having a radius r6，r62.4-3.8mm, and when the first annular protrusion 201 is matched with the corresponding first annular groove 301 and the paperboard is rolled, the circle centers of the first annular protrusion 201 and the first annular groove 301 coincide. The advantages of this embodiment are: the paper box folding device is convenient to produce and process, and meets the fixed and standardized batch production of the paper box, and the paper box folding device is straight and convenient to bend under the width of a folding line without damage, and the damage rate is nearly zero.
As a preferred embodiment of the present invention, the shaping mechanism comprises an outer trace shaping unit and a secondary outer trace shaping unit which are sequentially arranged along the moving direction of the paperboard, wherein the outer trace shaping unit is used for shaping the outer trace of the paperboard folding line and primarily rolling the inner part of the outer trace, and the secondary outer trace shaping unit is used for shaping the secondary outer trace of the paperboard folding line and rolling and shaping the inner part of the secondary outer trace; the formed fold line comprises two outer marks, two secondary outer marks positioned between the two outer marks and a shaping line positioned between the two secondary outer marks. Specifically, as shown in fig. 2, the outer mark forming unit includes outer mark shaping rollers having the same number of fold lines to be roll-formed, and the outer mark shaping rollers include a lower outer mark shaping roller 15 and an upper outer mark shaping roller 16, which are disposed opposite to each other, and a lower outer mark shaping rollerA second annular groove 1501 coinciding with the axis of the mark shaping roller 15 is formed on the circumferential surface of the mark shaping roller 15, the axial section of the circumferential surface of the second annular groove 1501 is in a circular arc shape, a second annular bulge 1601 coinciding with the axis of the mark shaping roller 16 and corresponding to the second annular groove 1501 is constructed on the circumferential surface of the upper outer mark shaping roller, and the axial section of the bulge surface of the second annular bulge 1601 is in a circular arc shape; the outer mark forming unit rolls the paperboard (shown in fig. 11) rolled by the initial pressing mechanism, rolls the outer edge, a part of the outer mark area and the inner extrusion area 1202 of the paperboard outer mark to shape the outer edge of the outer mark, and pre-presses the inner edge and the inner extrusion area 1202 of the outer mark to roll the outer edge and the inner extrusion area to thin the outer mark, so that the toughness is improved, and the rolled part of the outer mark is changed into a circular arc-shaped recess from a protrusion, so that the strength and the flexibility of the paperboard at the part are greatly increased. As shown in fig. 3, the secondary outer mark forming unit includes secondary outer mark shaping rollers having the same number as the number of fold lines to be roll-formed, the secondary outer mark shaping rollers include a next outer mark shaping roller 17 and a last outer mark shaping roller 18 which are oppositely arranged, a third annular groove 1701 coinciding with the axis of the next outer mark shaping roller 17 is formed on the circumferential surface of the next outer mark shaping roller 17, the axial cross section of the circumferential surface of the third annular groove 1701 is arc-shaped, a third annular protrusion 1801 coinciding with the axis of the last outer mark shaping roller 18 and corresponding to the third annular groove 1701 is configured on the circumferential surface of the last outer mark shaping roller 18, the axial cross section of the protrusion surface of the third annular protrusion 1801 is arc-shaped, the width of the second annular protrusion 1601 is greater than that of the third annular protrusion 1801, and the width of the second annular groove 1501 is greater than that of the third annular groove 1701; the paperboard enters a secondary outer mark forming unit for rolling after being rolled by an outer mark forming unit, the edge of the secondary outer mark forming unit rolls the inner edge of the outer mark and forms a secondary outer mark, a third annular bulge 1801 and a third annular groove 1701 of the secondary outer mark forming unit are matched to roll an inner extrusion area 1202 for a second time, a folding line after forming is formed, shaping is mainly the outer mark and the secondary outer mark, the part which is turned to play a main role is the inner extrusion area 1202, the inner extrusion area 1202 is deformed and bent to a required angle in the bending process, the outer mark and the secondary outer mark are straight to form a line, deformation is generated on one hand, the bending is assisted, on the other hand, after the bending forming, the folding line is integrally straight, the appearance is attractive, and the line is bentMoreover, the breakage of the folding line in the folding process is almost zero, and the folding line is very easy to fold. Preferably, the radii of the axial cross-sections of the peripheral surfaces of the second annular groove 1501 and the third annular groove 1701 are r7And r8，r7＝r8The radius of the axial cross section of the peripheral surfaces of the second annular protrusion 1601 and the third annular protrusion 1801 is r, 14.3-15.8mm9And r10，r9＝r10＝9.3-10.7mm。
Example 2
The invention discloses a paperboard line pressing device which comprises 3-5 groups of initial pressing mechanisms, a shaping mechanism and an anti-tilting mechanism, wherein the groups of initial pressing mechanisms are sequentially arranged along the movement direction of a paperboard 12 and are used for performing profiling and in-line prepressing on outer marks 1201 on the paperboard 12, and the shaping mechanism is positioned behind the last group of initial pressing mechanisms and is used for rolling the prepressed inner marks between the two outer marks 1201 to form the inner marks; the anti-tilting mechanism is configured at the outer side position of the indentation of the paper board 12, and the paper board 12 gradually passes through the anti-tilting mechanism in the process that the paper board 12 passes through the primary pressing mechanism and the shaping mechanism. The working principle and the advantages of the invention are as follows: in the process of pressing the paperboard 12, the paperboard 12 is firstly rolled by 3-5 groups of initial pressing mechanisms, so that the paperboard 12 forms two molding outer marks 1201 which are relatively soft and have relatively high toughness, and the area between the two outer marks 1201 is rolled so that the paperboard 12 part in the area is pressed and deformed towards a preset single direction, and further the toughness of the paperboard 12 in the area is improved, then the shaping mechanism carries out rolling shaping on the paperboard 12 part in the area between the two outer marks 1201 to form a folding line, when the paperboard 12 is inwards or outwards folded along the folding line, the folding line part of the paperboard 12 is bent by external force to distribute part of the received force to the adjacent outer mark 1201 area, the rest part of the external force is born by the paperboard, and the folding line area has high toughness and cannot be broken due to multiple rolling; 3-5 groups of initial pressing mechanisms are selected, so that the forming rate of the rolling outer mark 1201 of the paperboard 12 is up to 99.26%; when the initial pressing mechanism adopts 2 groups or less than 2 groups, the forming rate of the outer mark 1201 is lower, when 1 group is adopted, the forming rate is about 76.83%, when 2 groups are adopted, the forming rate is about 84.06%, the phenomenon of breakage is easy to occur in the process that the paperboard 12 is turned inwards or outwards, when the initial pressing mechanism adopts more than 5 groups, the forming rate of the outer mark 1201 is the same or basically the same as that when 4 groups or 5 groups are adopted, and no obvious change exists; the invention adopts two different rolling mechanisms to press the paper board 12, and has the characteristics of narrow pressing line, straight folding line and difficult rupture of bending, so that the appearance of the formed paper box is exquisite and the volume of the formed paper box is kept to the maximum; meanwhile, the anti-tilting mechanism is adopted, so that the paperboard 12 is kept in a horizontal state in the process of line pressing and forming, and the phenomenon that line pressing or paper jamming cannot be performed at a preset position due to deviation or tilting of the paperboard 12 is avoided; in conclusion, the invention solves the problems that the paperboard 12 is broken when being folded due to too narrow pressing lines or the carton is poor in appearance and small in volume after being formed due to too wide pressing lines, and the existing paperboard 12 can be folded in one direction only after being pressed. Preferably, the preliminary press mechanism is 4 sets, and the forming ratio of the outer mark 1201 is 99.71% in 4 sets, because the forming ratios of the outer mark 1201 are 93.92% and 99.74% in 3 sets and 5 sets, respectively, and the use of the preliminary press mechanism is 4 sets is the best choice when considering both the input cost and the forming ratio.
As a preferred embodiment of the present invention, the initial pressing mechanism in this embodiment has the same structure as the initial pressing mechanism in embodiment 1, and the outer trace 1201 is an arc shape with smooth transition, so as to avoid the external force applied to the part by roll forming or subsequent bending, and the sudden change of the force applied to the part to damage the paperboard 12. The difference from the embodiment 1 is that: the axial section of the circumferential surface of the first annular projection 201 is a semicircle having a radius r1，r1The first annular groove 301 has a circular arc-shaped axial cross section having a radius r of 3.5 to 4.5mm2，r2＝r1The distance between the two first annular protrusions 201 is d1，d13.3-6.8mm, the width of the first annular groove 301 is d2, d2 is 3.2-6.9mm, preferably, d24mm or 6 mm. In this embodiment, r is preferably r to ensure a narrow indentation while maintaining the yield1＝4.0mm，d1＝6.0mm，d26.0mm, these values are integers, are convenient in production and processing, and meet the requirements of production and processingThe combined paper box is fixed and standardized for batch production, when the combined paper box is located at the optimal value, the breakage rate of the paper board 12 is zero, and the formed indentation of the paper board 12 is not damaged by matching with subsequent rolling, and the breakage rate is 0.007% in the bending process.
As a preferred embodiment of the present invention, the shaping mechanism comprises a shaping pair roller with the same number of fold lines required to be roll-formed, as shown in fig. 5 and 8-9, the shaping pair roller comprises a lower shaping roller 4 and an upper shaping roller 5 which are oppositely arranged, a fourth annular groove 401 is formed on the circumferential surface of the lower shaping roller 4, the fourth annular groove 401 is overlapped with the axis of the lower shaping roller 4, a fourth annular protrusion 501 which is overlapped with the axis of the upper shaping roller 5 is formed on the circumferential surface of the upper shaping roller 5, the fourth annular protrusion 501 is arranged corresponding to the fourth annular groove 401, a fifth annular protrusion 502 is formed on the top of the fourth annular protrusion 501, and the axes of the fourth annular protrusion 501 and the fifth annular protrusion 502 are overlapped. The fourth annular protrusion 501 and the fourth annular groove 401 are matched, so that the raised parts of the two outer traces 1201 of the paperboard 12 are rolled on one side close to the inner pressing area 1202 and the inner pressing area 1202 at the same time, meanwhile, the fifth annular protrusion 502 is rolled and formed on the position close to the middle of the inner pressing area 1202, and as shown in fig. 12, the rolled part of the fifth annular protrusion 502 forms an inner bending area 1203. The principle of the embodiment is as follows: when the fourth annular protrusion 501 and the fourth annular groove 401 are rolled, as shown in fig. 11, the portion of the outer trace 1201 of the paper board 12 near the top of the bump is thinned, and at the same time, the portion of the outer trace 1201 is thinned and extends toward the top of the bump, and the portion of the outer trace 1201 near the inner extrusion area 1202 is thinned and extends toward the inner extrusion area 1202, and at the same time, the fifth annular protrusion 502 presses the middle position of the inner extrusion area 1202 with higher toughness, so that the area corresponding to the inner extrusion area 1202 continues to be extended and thinned downward, and a forming folding line with high toughness is formed, and the area between the two outer traces 1201 has high toughness, and the phenomenon of breakage is not easy to occur during the forward and reverse folding, and the most important factor of high toughness is that the area between the two outer traces 1201 of the paper board 12 is always an integral body, and the tearing resistance thereof is greatly improved.
As a preferred embodiment of the present invention, in order to ensure the rolling and bending process to prevent the paper sheet 12 from being rolled or bentThe fourth annular groove 401 has a circular arc-shaped axial cross section with a radius r3，r319.6-20.3mm, the axial cross-section of the peripheral surface of the fourth annular projection 501 is a semicircle with a radius r4，r417.7-18.2 mm. The width of the folding line depends on the width of the fifth annular projection 502, the width of the fifth annular projection 502 is d3，d33.8-4.3 mm. In order to ensure that the indentation is narrow and the yield is maintained, r is adopted in the embodiment3＝20.0mm，r4＝18.0mm，d34.0mm, these values are the integer, and it is comparatively convenient in the production and processing, and accord with the fixed standardized batch production of carton. In this embodiment, the axial cross section of the circumferential surface of the fifth annular protrusion 502 is rectangular, and the joint of the fifth annular protrusion 502 and the fourth annular protrusion 501 and the outer edge of the fifth annular protrusion 502 are processed by rounding, because the axial cross section of the circumferential surface of the fifth annular protrusion 502 is rectangular, the folding line is a straight line, and the process of rounding is to avoid the upper and lower surfaces of the paperboard 12 being cut during the rolling process of the folding line.
Example 3
The specific structure of the tilting prevention mechanism mentioned in embodiment 1 and embodiment 2 is, as shown in fig. 1 and 10, that the tilting prevention mechanism includes an upper pressing rod 9 and a lower supporting rod 6 which are staggered up and down and arranged in parallel, and both of them are located outside the folding line, the lower supporting rod 6 is located between the upper pressing rod 9 and the corresponding folding line, and the upper end surface and the lower end surface of the cardboard 12 are respectively in contact with the upper pressing rod 9 and the lower supporting rod 6. The working principle of the embodiment is as follows: cardboard 12 is being pressed the in-process of line, and is located the part in the outside, and the part that is close to line ball department can take place to sink, and the perk can take place for the part of keeping away from line ball department, and lower support bar 6 or last support pressure bar 9 like this take place the incline or block with sinking or the perk restriction of these two parts respectively, and then avoid rolling press in-process cardboard 12 to take place the skew, and cause the qualification rate to reduce and influence the problem appearance of efficiency. In order to facilitate the cardboard 12 to smoothly enter the anti-tilting mechanism, the upper pressing rod 9 and the lower supporting rod 6 are respectively formed with an upward bent portion 901 and a downward bent portion 601 at the inlet ends of the cardboard 12. And this embodiment is in order to realize the regulation of the upper and lower surface top pressure degree of upper support pressure bar 9 and lower support pressure bar 6 to cardboard 12, so that cardboard 12 is in the smooth in-process of preventing the perk mechanism, cardboard 12 can not take place the skew, lower support pressure bar 6 is connected with first fixed plate 7 through vertical setting's first regulation pole 8, upper support pressure bar 9 is connected with second fixed plate 10 through vertical setting's second regulation pole 11, and first fixed plate 7 and second fixed plate 10 are all fixed in on frame 1, first regulation pole 8 and second regulation pole 11 are the threaded rod, the two respectively with corresponding first fixed plate 7 and second fixed plate 10 threaded connection, and adjust the height through adjusting nut respectively.
As a preferred embodiment of the present invention, as shown in fig. 13, both ends of the rotating shaft of the upper primary press roller 3 and the rotating shaft of the upper shaping roller 5 are respectively connected to the frame 1 through a gap adjusting mechanism for adjusting the gap of the rolled paper sheets 12 to adapt to the line pressing formation of the paper sheets 12 with different thicknesses. Wherein, clearance adjustment mechanism include with frame 1 along vertical sliding connection's slider 13, this slider 13 rotates with the one end of corresponding pivot to be connected, and slider 13 rotates with adjusting screw 14 to be connected, this adjusting screw 14 along vertical direction setting and with frame 1 threaded connection, through rotatory adjusting screw 14, realize down the clearance of primary compression roller 2 and last primary compression roller 3 and/or down the clearance adjustment of sizing roller 4 and last sizing roller 5.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a cardboard cord grip which characterized in that: the paperboard line pressing device comprises at least one group of initial pressing mechanisms for outer trace pressing and trace inner pre-pressing, and a shaping mechanism which is positioned behind the last group of initial pressing mechanisms and is used for outer trace and trace inner forming, wherein the initial pressing mechanisms are sequentially arranged along the moving direction of a paperboard; the primary pressing mechanism comprises a plurality of primary pressing units arranged at intervals along the moving direction of the paperboard, each primary pressing unit comprises a primary pressing roller with the same number of turning lines required to be formed by rolling, each primary pressing roller comprises a lower primary pressing roller and an upper primary pressing roller which are oppositely arranged, two first annular protrusions which are overlapped with the axis of the lower primary pressing roller are constructed on the circumferential surface of the lower primary pressing roller, the two first annular protrusions are arranged at intervals along the axis of the lower primary pressing roller, two first annular grooves are formed on the circumferential surface of the upper primary pressing roller at positions corresponding to the two first annular protrusions, and the corresponding first annular protrusions are matched with the first annular grooves; the axial section of the peripheral surface of the first annular protrusion is a semicircle, the axial section of the peripheral surface of the first annular groove is a semicircle, and when the first annular protrusion is matched with the corresponding first annular groove and rolls the paper board, the circle center of the first annular protrusion is superposed with that of the first annular groove; the anti-warping mechanism comprises an upper pressing rod and a lower supporting rod which are staggered up and down and arranged in parallel, the upper pressing rod and the lower supporting rod are both positioned on the outer sides of the folding lines, the lower supporting rod is positioned between the upper pressing rod and the corresponding folding line, and the upper end surface and the lower end surface of the paperboard are respectively contacted with the upper pressing rod and the lower supporting rod; the upper supporting rod is connected with the lower supporting rod through a first adjusting rod vertically arranged, the upper supporting rod is connected with the second fixing plate through a second adjusting rod vertically arranged, the first fixing plate and the second fixing plate are fixed on the rack, the lower supporting rod and the upper supporting rod are arranged on two sides of the paperboard, and the two lower supporting rods are located between the two upper supporting rods.
2. A paperboard line clip as recited in claim 1, wherein: the number of the initial pressing mechanisms is two.
3. A paperboard creasing device as set forth in claim 1, wherein: the shaping mechanism comprises an outer trace shaping unit and a secondary outer trace shaping unit which are sequentially arranged along the moving direction of the paperboard, the outer trace shaping unit is used for shaping outer traces of the paperboard folding line and primarily rolling the inner part of the outer traces, and the secondary outer trace shaping unit is used for shaping secondary outer traces of the paperboard folding line and rolling the inner part of the secondary outer traces; the molded fold line comprises two outer marks, two secondary outer marks positioned between the two outer marks, and a shaping line positioned between the two secondary outer marks.
4. A paperboard line clip as set forth in claim 3, wherein: outer trace shaping unit includes the outer trace design pair roller the same with required roll forming's broken line quantity, outer trace design pair roller is including the lower outer trace design roller that sets up relatively and last outer trace design roller, be formed with the second annular groove rather than the axis coincidence on the global of outer trace design roller down, the global axial section of second annular groove is arc, it constructs rather than the axis coincidence and protruding with the corresponding second annular groove of second annular groove on global to go up outer trace design roller, the axial section of the protruding face of second annular is arc.
5. A paperboard line clip as set forth in claim 4, wherein: inferior outer trace shaping unit includes the outer trace design pair roller of inferior the same with required roll forming's broken line quantity, the outer trace design pair roller of inferior is including the outer trace design roller of next time and the outer trace design roller of last time that set up relatively, be formed with the third annular groove rather than the axis coincidence on the global of outer trace design roller of next time, the global axial section of third annular groove is convex, outer trace design roller was constructed last time on global rather than the axis coincidence and with the corresponding third annular of third annular groove protruding, the axial section of the protruding face of third annular is convex, just the bellied width of second annular is greater than the bellied width of third annular, the width of second annular groove is greater than the width of third annular groove.
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| CN202011091126.6A CN112192894B (en) | 2020-10-13 | 2020-10-13 | Paperboard line pressing device |
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| CN202011091126.6A CN112192894B (en) | 2020-10-13 | 2020-10-13 | Paperboard line pressing device |
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| CN112192894B true CN112192894B (en) | 2022-06-07 |
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