A mobile paperboard feeding and pressing mechanism and carton machine

Abstract

The application discloses a mobile paperboard feeding and pressing mechanism and a carton machine, which comprises a transverse sliding rail and a plurality of paperboard feeding and pressing units. Each paperboard feeding and pressing unit comprises a support, a paper feeding sun gear and a front pressing wheel. The support is in sliding cooperation with the transverse sliding rail. The paper feeding sun gear is installed on the support through a first driving component. The first driving component is used for driving the paper feeding sun gear to move up and down. The front pressing wheel is installed on the support through a second driving component. The second driving component is used for driving the front pressing wheel to move up and down. The front pressing wheel comprises a pre-pressing wheel used for pre-pressing a paperboard along a longitudinal indentation line. Alternatively, the front pressing wheel comprises a line pressing wheel used for pressing a longitudinal indentation line on the paperboard. The mechanism can significantly improve the forming quality of the longitudinal indentation line and solve the problem that the transverse notch and the longitudinal indentation line are prone to cracking at the intersection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carton machines, in particular to a mobile paperboard feeding and pressing mechanism of a carton machine. BACKGROUND

[0002] The carton machine is used for processing paperboard into semi-finished cartons, and has a paperboard inlet at the front end and a paperboard outlet at the rear end. After the paperboard passes through the carton machine, it becomes a planar semi-finished carton which can be folded and pasted to become a three-dimensional carton.

[0003] As a typical carton machine, it usually has a paper feeding unit, a slotting unit, a line hitting unit, a longitudinal pressing line unit, a longitudinal cutting unit, a transverse cutting unit and a punching unit. Taking a common cuboid carton as an example, after a single paperboard passes through the carton machine, it can process a transverse slot, a transverse pressing line, a longitudinal pressing line and a handle hole on the paperboard, cut a tongue for bonding, and apply adhesive on the tongue.

[0004] From the direction of paperboard conveying, the paper feeding unit is at the most front end, and the slotting unit is next, that is, if sorted from front to back, the paper feeding unit and the slotting unit are arranged in front. In order to keep the paperboard stable during inputting and slotting, the paper feeding unit is provided with a whole row of fixed paper feeding sun gears to convey and press the paperboard through the sun gears.

[0005] In actual use, due to different thicknesses of paperboards of different specifications and certain fluctuations in paperboard quality, it is difficult to keep the quality of the longitudinal pressing line stable during longitudinal pressing, and there is a different degree of cracking phenomenon at the intersection of the transverse slot and the longitudinal pressing line, which has been difficult to solve for a long time. SUMMARY

[0006] The present application aims to provide a mobile paperboard feeding and pressing mechanism. The mechanism can significantly improve the forming quality of the longitudinal pressing line and solve the problem of easy cracking at the intersection of the transverse slot and the longitudinal pressing line.

[0007] Another object of the present application is to provide a carton machine provided with the mobile paperboard feeding and pressing mechanism.

[0008] In order to achieve the above object, the present application provides a mobile paperboard feeding and pressing mechanism, which comprises a transverse sliding rail and a plurality of paperboard feeding and pressing units; each of the paperboard feeding and pressing units comprises a support, a paper feeding sun gear and a front pressing wheel, the support is in sliding cooperation with the transverse sliding rail, the paper feeding sun gear is installed on the support through a first driving component, the first driving component is used for driving the paper feeding sun gear to move up and down, the front pressing wheel is installed on the support through a second driving component, the second driving component is used for driving the front pressing wheel to move up and down; the front pressing wheel comprises a pre-pressing wheel used for pre-pressing a paperboard along a longitudinal indentation line, or the front pressing wheel comprises a line pressing wheel used for pressing a longitudinal indentation line on the paperboard.

[0009] Optionally, the line pressing wheel is a high-position line pressing wheel or a low-position line pressing wheel in high-low line pressing wheels.

[0010] Optionally, each of the paperboard feeding and pressing units is driven to move transversely by a corresponding slotting unit, the paperboard feeding and pressing unit and the slotting unit are provided with connecting and separating docking components, when transversely moving, the paperboard feeding and pressing unit and the slotting unit are docked through the docking components, so that the paperboard feeding and pressing unit follows the slotting unit.

[0011] Optionally, the docking components comprise a fork and a pin shaft, the pin shaft is installed vertically at a transverse moving position of the slotting unit, the fork is installed on the paperboard feeding and pressing unit through a third driving component, the third driving component is used for driving the fork to move forward and backward, so that the fork is connected or separated with the pin shaft.

[0012] Optionally, a position detection unit is further included, the position detection unit is installed on the paperboard feeding and pressing unit, so as to control the slotting unit to move to a position where the fork is aligned with the pin shaft through detection of the transverse moving position.

[0013] Optionally, the front pressing wheel is located at a side of the paper feeding sun gear in an axial direction.

[0014] Optionally, the transverse sliding rail is installed on a back surface of a paper feeding beam, and the supports of the paperboard feeding and pressing units are respectively connected with the transverse sliding rail through sliding blocks.

[0015] Optionally, four groups of the paperboard feeding and pressing units are provided, and one group of the slotting units corresponds to two groups of the paperboard feeding and pressing units.

[0016] Optionally, the first driving component is a first air cylinder, the second driving component is a second air cylinder, and the third driving component is a third air cylinder.

[0017] To achieve the above-mentioned another object, the application provides a carton machine, comprising a paper feeding unit, a slotting unit, a line bumping unit and a cross cutting unit, the paper feeding unit is provided with the mobile paperboard feeding and pressing mechanism in any of the above technical solutions.

[0018] The application designs the traditional fixed sun gear into multiple groups of sun gears capable of moving horizontally, and adds a front pressing wheel to each group of sun gears to form a mobile paperboard feeding and pressing mechanism with the functions of feeding paperboard and pressing paperboard. If the front pressing wheel is a pre-pressing wheel, compared with the single pressing mode, the pre-pressing wheel can pre-press the paperboard along the longitudinal score line, and then the paperboard is pressed again in the subsequent station, so that the longitudinal score line part of the paperboard with large thickness or poor texture can reach a relatively ideal thickness, thereby significantly improving the forming quality of the longitudinal score line and solving the problem that the transverse notch and the longitudinal score line are prone to crack at the intersection.

[0019] In a preferred scheme, the paperboard feeding and pressing unit can follow the slotting unit through the abutting components. In this way, the transverse driving mechanism for the paperboard feeding and pressing unit is not needed, and the paperboard feeding and pressing units can be adjusted to the required positions by reusing the transverse movement function of the slotting unit, thereby reducing the number of components, saving the internal space and further simplifying the structure of the carton machine.

[0020] The carton machine provided by the application is provided with the mobile paperboard feeding and pressing mechanism, and has the corresponding technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structure schematic view of the mobile paperboard feeding and pressing mechanism provided by the embodiment of the application;

[0022] Figure 2 A front view of the mobile paperboard feeding and pressing mechanism shown in Figure 1

[0023] Figure 3 A left view of the mobile paperboard feeding and pressing mechanism shown in Figure 1

[0024] Figure 4 A front view of the paperboard feeding and pressing unit shown in Figure 1

[0025] Figure 5 A front view of the paperboard feeding and pressing unit shown in​​​Figure 4 side view of the paperboard feeding and pressing unit shown in FIG. 1;

[0026] Figure 6 for Figure 4 axial side view of the paperboard feeding and pressing unit shown in FIG. 1;

[0027] Figure 7 for Figure 4 axial side view of the paperboard feeding and pressing unit shown in FIG. 1 from another perspective;

[0028] Figure 8 for

[0029] in the figure:

[0030] 10. paperboard stop; 20. paperboard feeding beam; 30. mobile paperboard feeding and pressing mechanism; 31. transverse slide rail; 32. paperboard feeding and pressing unit; 40. slotting unit; 41. screw rod; 42. slotting knife; 43. motor; 44. nut; 45. pin shaft; 321. bracket; 322. paperboard feeding sun gear; 323. pre-pressing wheel; 324. slide block; 325. first air cylinder; 326. paperboard; 327. second air cylinder; 328. third air cylinder; 329. sensor; 51. high-position line pressing wheel; 52. low-position line pressing wheel; 60. shift fork. DETAILED DESCRIPTION

[0031] In order to make the person skilled in the art better understand the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0032] In this document, the terms "upper", "lower", "inner", "outer" and the like are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may also change accordingly according to the different drawings, therefore, it cannot be understood as an absolute limitation on the scope of protection; moreover, the relationship terms such as "first" and "second" are only used to distinguish one part from another part with the same name, and do not necessarily require or imply any such actual relationship or order between the parts.

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 1 for Figure 2 for Figure 1 top view of the mobile paperboard feeding and pressing mechanism shown in FIG. 2; Figure 3 for Figure 1 left view of the mobile paperboard feeding and pressing mechanism shown in FIG. 2.

[0034] As shown in the figure, in one embodiment, the mobile paperboard feeding and pressing mechanism 30 is located at the back of the paper feeding beam 20, and the front of the paper feeding beam 20 is symmetrically installed with the paperboard blocking plates 10 through the slide rails. By adjusting the distance between the paperboard blocking plates 10 in the transverse direction, the paperboard blocking plates 10 can adapt to different widths of the paperboard size.

[0035] The rear side of the mobile paperboard feeding and pressing mechanism 30 is a slotting unit 40, which is provided with a lead screw 41, two groups of slotting knives 42 and a motor 43. The lead screw 41 is a pair of symmetrical reverse lead screws, which are connected through a coupling in the middle. The two groups of slotting knives 42 are symmetrically installed on the lead screw 41 through nuts 44.

[0036] When the motor 43 drives the lead screw 41 to rotate, the two groups of slotting knives 42 can be driven to move towards the middle or move to both sides at the same time through the nuts 44, so as to process different depths of transverse slots on the paperboard.

[0037] Please refer to Figures 4 to 7 , Figure 4 for Figure 1 the front view of the paperboard feeding and pressing unit shown in the figure; Figure 5 for Figure 4 the side view of the paperboard feeding and pressing unit shown in the figure; Figure 6 for Figure 4 the axial side view of the paperboard feeding and pressing unit shown in the figure; Figure 7 for Figure 4 the axial side view of the paperboard feeding and pressing unit shown in the figure.

[0038] As shown in the figure, the mobile paperboard feeding and pressing mechanism 30 mainly consists of a transverse slide rail 31 located at the back of the paper feeding beam 20 and four groups of paperboard feeding and pressing units 32.

[0039] Each group of paperboard feeding and pressing units 32 is respectively provided with a bracket 321, a paper feeding sun gear 322 and a pre-pressing wheel 323. The back of the bracket 321 is provided with a sliding block 324 and is connected with the transverse slide rail 31 through the sliding block 324. Each group of paperboard feeding and pressing units 32 can move along the transverse slide rail 31.

[0040] The paper feeding sun gear 322 is installed on the bracket 321 through a first air cylinder 325. The first air cylinder 325 is vertically arranged, and its piston rod extends downward and is connected with the wheel frame of the paper feeding sun gear 322. When the first air cylinder 325 performs the extension and retraction action, it can drive the paper feeding sun gear 322 to move up and down, so as to adapt to different thicknesses of the paperboard.

[0041] The bracket 321 is provided with a paper pressing plate 326 located at the rear side of the paper feeding sun gear 322, the paper pressing plate 326 has two opposite bent angles, the width of the paper pressing plate 326 is substantially equal to the axial length of the paper feeding sun gear 322, and the paper pressing plate 326 can press the paperboard through the bent lower edge, so as to prevent the paperboard from being lifted upward in the subsequent processing process.

[0042] The pre-pressing wheel 323 is installed on the bracket 321 through the second cylinder 327, the pre-pressing wheel 323 is located at the side of the paper feeding sun gear 322 in the axial direction, the second cylinder 327 is also vertically arranged, and is arranged side by side and spaced apart from the first cylinder 325, and the piston rod of the second cylinder 327 extends downward and is connected with the wheel frame of the pre-pressing wheel 323. When the second cylinder 327 performs the extension and retraction action, the pre-pressing wheel 323 can be driven to move up and down, so that the pre-pressing wheel 323 is in the pre-pressing or non-pre-pressing state, and the pre-pressing force can be adjusted.

[0043] In the embodiment, two groups of slotting units 40 and four groups of paperboard feeding and pressing units 32 are provided, and each group of slotting unit 40 can correspond to two groups of paperboard feeding and pressing units 32. The slotting unit 40 located on the left side is used to drive the two groups of paperboard feeding and pressing units 32 on the left side to move transversely, and the slotting unit 40 located on the right side is used to drive the two groups of paperboard feeding and pressing units 32 on the right side to move transversely.

[0044] The paperboard feeding and pressing unit 32 and the corresponding slotting unit 40 are provided with connecting and separating docking components, when moving transversely, the paperboard feeding and pressing unit 32 is connected to the slotting unit 40 through the docking components, so that the paperboard feeding and pressing unit 32 follows the slotting unit 40.

[0045] Specifically, the docking components mainly consist of a yoke 60 and a pin shaft 45, the pin shaft 45 is vertically installed on the nut 44 of the slotting unit 40, and the yoke 60 is installed on the side of the second cylinder 327 through a third cylinder 328, the third cylinder 328 is smaller than the first cylinder 325 and the second cylinder 327, the piston rod of the third cylinder 328 extends backward, and the yoke 60 is connected with the piston rod of the third cylinder 328 through a connecting plate.

[0046] The yoke 60 is provided with a U-shaped opening, when the third cylinder 328 performs the extension and retraction action, the yoke 60 can be driven to move forward and backward, so that the yoke 60 is connected or separated with the pin shaft 45 on the slotting unit 40 through the U-shaped opening.

[0047] In order to ensure the accurate alignment of the fork 60 and the pin shaft 45, a sensor 329 is arranged on the paper board feeding and pressing unit 32, which is installed on the side of the first cylinder 325 and between the first cylinder 325 and the second cylinder 327. The sensor 329 can detect the position of the nut 44 by detecting the surface or edge of the front side of the nut 44, and then control the movement of the slotting cutter 42 to align the pin shaft 45 on the nut 44 with the fork 60.

[0048] Since the paper board can be pre-pressed along the longitudinal creasing line by the pre-pressing wheel 323, the longitudinal creasing line part of the paper board with large thickness or poor quality can reach a relatively ideal thickness, thereby significantly improving the forming quality of the longitudinal creasing line and solving the problem of easy cracking at the intersection of the transverse slot and the longitudinal creasing line.

[0049] Moreover, the paper board feeding and pressing unit 32 can follow the slotting unit 40 through the fork 60 and the pin shaft 45, without the need to separately arrange a transverse driving mechanism. By reusing the transverse movement function of the slotting unit 40, each paper board feeding and pressing unit 32 can be adjusted to the required position, thereby reducing the number of parts, saving internal space, and further simplifying the structure of the carton machine.

[0050] Please continue to refer to Figure 8 , Figure 8 Another structure schematic view of a movable paper board feeding and pressing mechanism provided by the embodiment of the present application.

[0051] As shown in the figure, the second embodiment is mainly different from the first embodiment in that the pre-pressing wheel 323 is replaced by a line pressing wheel, and the line pressing wheel is a high-position line pressing wheel 51. The use of the high-position line pressing wheel 51 and a low-position line pressing wheel 52 can process longitudinal creasing lines not located on the same straight line on different sections of the paper board, that is, the longitudinal creasing lines on different sections of the paper board are staggered by a certain distance.

[0052] The high-position line pressing wheel 51 and the low-position line pressing wheel 52 are arranged in front and back, the high-position line pressing wheel 51 is used to press the creasing line with a high position, and the low-position line pressing wheel 52 is used to press the creasing line with a low position, thereby forming high-low creasing lines.

[0053] This line pressing method fully considers the influence of the thickness of the paper board on folding. After improvement, since the longitudinal creasing lines on different sections are staggered by a certain distance, when the four flaps of the top and bottom of the carton are folded inward, the two flaps located below are folded along the longitudinal creasing line with a low position, and the two flaps located above are folded along the longitudinal creasing line with a high position, without being affected by the thickness of the flaps below. In this way, the flaps located above will not be deformed at the root, which is beneficial to folding operation and can ensure the tightness and appearance of the carton.

[0054] In actual use, if the paperboard is thin, and the high-low pressure mark lines are not considered, only a single pressure line wheel is generally provided. In this case, the pressure line wheel can be directly installed on the movable paperboard feeding and pressing mechanism.

[0055] Since the longitudinal pressure mark line is pressed in advance before the slotting, or part of the longitudinal pressure mark line is pressed in advance before the slotting, the paperboard is not easy to crack during the subsequent slotting process, and the forming quality of the longitudinal pressure mark line is improved.

[0056] In the present embodiment, the same parts as in the first embodiment are given the same reference numerals, and the same textual description is omitted.

[0057] The above embodiments are only preferred solutions of the present application, and are not limited thereto. Based thereon, targeted adjustments can be made according to actual needs to obtain different embodiments. For example, the sensor 329 is installed below the fork 60, or the paperboard feeding and pressing unit 32 and the slotting unit 40 are connected through other means, etc. Since there are many possible ways, they will not be illustrated one by one here.

[0058] In addition to the above movable paperboard feeding and pressing mechanism, the present application also provides a carton machine provided with a paper feeding unit, a slotting unit, a line hitting unit and a cross cutting unit. The paper feeding unit is provided with the movable paperboard feeding and pressing mechanism 30 described above. For the remaining structure of the carton machine, please refer to the prior art, which will not be described here.

[0059] The movable paperboard feeding and pressing mechanism and the carton machine provided by the present application are described in detail above. The principles and embodiments of the present application are described by applying specific examples in this paper. The above embodiment description is only used to help understand the core idea of the present application. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A movable cardboard feeding mechanism, characterized in that, Located upstream of the slotting unit, the station includes a transverse slide rail and multiple sets of paperboard feeding units. Each paperboard feeding unit includes a support, a feeding sun wheel, and a front pressure roller. The support slides along the transverse slide rail. The feeding sun wheel is mounted on the support via a first driving component, which drives the feeding sun wheel to move up and down. The front pressure roller is mounted on the support via a second driving component, which drives the front pressure roller to move up and down. The front pressure roller is located lateral to the feeding sun wheel in the axial direction. The front pressure roller includes a pre-pressure roller for pre-crushing the paperboard along the longitudinal crease line, or the front pressure roller includes a pre-pressure roller for pre-crushing the paperboard along the longitudinal crease line. A creasing roller presses out longitudinal creases to pre-press or crease the cardboard before slotting. Each cardboard feeding unit is driven laterally by a corresponding slotting unit. The cardboard feeding unit and the slotting unit are equipped with docking components that can be connected and separated. During lateral movement, the cardboard feeding unit and the slotting unit are connected through the docking components, so that the cardboard feeding unit follows the slotting unit. The docking components include a fork and a pin. The pin is vertically installed at the lateral movement part of the slotting unit. The fork is installed on the cardboard feeding unit through a third driving component. The third driving component is used to drive the fork to move back and forth, so that the fork engages or disengages from the pin.

2. The movable cardboard feeding mechanism according to claim 1, characterized in that, The pressure roller is either the high-position pressure roller or the low-position pressure roller among high and low pressure rollers.

3. The movable cardboard feeding mechanism according to claim 1, characterized in that, It also includes a position detection unit, which is installed on the cardboard feeding unit to control the slotting unit to move to the position where the fork and the pin are aligned by detecting the lateral movement part.

4. The movable cardboard feeding mechanism according to claim 1, characterized in that, The transverse slide rail is installed on the back of the paper feeding beam, and the brackets of each of the cardboard feeding units are slidably connected to the transverse slide rail via sliders.

5. The movable cardboard feeding mechanism according to claim 1, characterized in that, There are four sets of paperboard feeding units, and one slotting unit corresponds to two sets of paperboard feeding units.

6. The movable cardboard feeding mechanism according to claim 1, characterized in that, The first driving component is a first cylinder, the second driving component is a second cylinder, and the third driving component is a third cylinder.

7. A carton machine, comprising a paper feeding unit, a slotting unit, a crimping unit, and a cross-cutting unit, characterized in that, The paper feeding unit is equipped with a movable paperboard feeding mechanism as described in any one of claims 1 to 6.

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