Up-down adjustable knife roll structure

Abstract

The utility model discloses an up-down adjustable knife roll structure which comprises a support, the support is provided with a knife roll and a transmission roll which are parallel to each other, the knife roll is located above or below the transmission roll, a paperboard is conveyed between the knife roll and the transmission roll, and the knife roll moves horizontally close to or away from the transmission roll through a transmission mechanism. And the knife roll is provided with a creasing knife for creasing the paperboard. The height position of the knife roll or the transmission roll can be automatically adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of carton machines, in particular to a knife roller structure with upper and lower adjustable capabilities. Background Art

[0002] Cartons are the most widely used packaging products, usually used as wrapping for goods or as outer protective layers for items. Cartons are formed by bending cardboard during production, and in order to make the carton completely closed, the cardboard needs to be grooved and indented.

[0003] The cardboard is conveyed by transmission rollers. During the conveying process, the cardboard is grooved or indented by a knife roller. In order to adjust the indentation or groove depth, it is usually necessary to adjust the height position of the knife roller. The conventional operation is to remove the knife roller, adjust the height and then fix it. This method is not only inefficient, but also has inaccurate adjustment accuracy. Utility Model Content

[0004] The utility model aims to solve the deficiencies of the above-mentioned technology and is designed to provide a knife roller structure with upper and lower adjustable capabilities.

[0005] The utility model designs a knife roller structure with upper and lower adjustable capabilities, comprising a bracket, wherein the bracket is provided with a knife roller and a transmission roller parallel to each other, the knife roller is located above or below the transmission roller, cardboard is transmitted between the knife roller and the transmission roller, the knife roller performs a translational motion relative to the transmission roller to move closer to or away from the transmission roller through a transmission mechanism, and the knife roller is provided with an indentation knife for indenting the cardboard.

[0006] Preferably, a transmission mechanism is provided between the knife roller and the bracket, and the transmission mechanism includes a screw pair, a slider, a guide rail, a first driving source and a synchronization rod. The guide rail is vertically arranged on the bracket, the slider is slidably fitted on the guide rail, the slider is connected to the end of the knife roller, the screw in the screw pair is vertically arranged on the bracket, the nut in the screw pair is connected to the slider, the first driving source is connected to the screw to drive the screw to rotate forward and reverse, and the synchronization rod is connected between the screw pairs at both ends of the knife roller to achieve synchronization.

[0007] For further optimization, transmission mechanisms are also provided at both ends of the transmission roller, so that the transmission roller can move closer to or away from the knife roller.

[0008] Further optimization is carried out, wherein a first driven gear is respectively provided at both ends of the knife roller, a first driving gear is provided on the bracket, and a first driving member for driving the first driving gear to rotate is also provided on the bracket, and the first driving gear and the first driven gear are engaged with each other to realize the rotation of the knife roller.

[0009] Preferably, a second driven gear is provided at each end of the transmission roller, a second driving gear is provided on the bracket, and a second driving member for driving the second driving gear to rotate is also provided on the bracket. The second driving gear and the second driven gear are engaged with each other to realize the rotation of the transmission roller.

[0010] For further optimization, the transmission roller and the corresponding driving member can also be connected by a chain or a synchronous belt to realize the rotation of the transmission roller.

[0011] For further optimization, the knife roller and the corresponding driving member can also be rotated by a chain or a synchronous belt.

[0012] Further optimization is that the knife roller is provided with an indentation knife, and a plurality of indentation knives are evenly distributed on the surface of the knife roller.

[0013] Further optimization, the creasing knife includes a second knife seat and a creasing blade, the second knife seat is extended along the axial direction of the knife roller, the creasing blade is located on the second knife seat, the bottom surface of the second knife seat and the surface of the knife roller are tightly attached to and adapted to each other, the second knife seat is provided with a second fixing hole on the front and rear sides of the creasing blade, and a fastener is installed in the second fixing hole to connect the second knife seat to the surface of the knife roller.

[0014] Preferably, each knife roller and transmission roller is rotated by a separate driving member, thereby independently controlling its own rotation speed to achieve free switching between uniform speed, acceleration and deceleration states.

[0015] The technical effect of the present invention is that the knife roller equipped with the indentation knife can be adjusted in height relative to the transmission roller, and the transmission roller can also be selectively adjusted in height. The knife roller or the transmission roller can both automatically adjust the height through the transmission mechanism, and there is no need to install or uninstall the knife roller or the transmission roller to achieve height adjustment, which is very convenient. It not only improves the adjustment accuracy, but also greatly improves the indentation efficiency and can control the depth of the indentation. The knife roller can be located above the transmission roller or below the transmission roller, so as to realize indentation on the upper and lower sides of the cardboard, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the utility model in which the knife roller is located above the transmission roller;

[0017] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a structural diagram of the utility model in which the knife roller is located below the transmission roller.

[0019] In the figure: 1. bracket; 2. knife roller; 4. creasing knife; 41. second knife holder; 42. creasing blade; 43. second fixing hole; 5. transmission roller; 6. lead screw pair; 7. slider; 8. mounting block; 9. guide rail; 10. first driving source; 11. synchronization rod; 12. first driven gear; 13. first driving gear; 14. first driving member; 15. second driven gear; 16. second driving gear; 17. second driving member. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0021] The utility model provides a structure of a knife roller 2 that can be adjusted up and down, including a bracket 1, the bracket 1 is provided with a knife roller 2 and a transmission roller 5 that are parallel to each other, the knife roller 2 and the transmission roller 5 are rotatably connected to the bracket 1, in this embodiment, the bracket 1 is a plate structure located at both ends of the knife roller 2 and the transmission roller 5, and can also be the main body of a carton forming machine, and the knife roller 2 and the transmission roller 5 are both horizontally rotatably connected to the bracket 1.

[0022] A creasing knife 4 is provided on the knife roller 2 to indent the cardboard. The knife roller 2 is located above or below the transmission roller 5, that is, the knife roller 2 can be above the transmission roller 5 or below the transmission roller 5. When the knife roller 2 is above the transmission roller 5, the cardboard is transmitted between the knife roller 2 and the transmission roller 5, and the knife roller 2 indents the surface of the cardboard from top to bottom, that is, an indentation is formed on the upper surface of the cardboard; when the knife roller 2 is below the transmission roller 5, the cardboard is transmitted between the knife roller 2 and the transmission roller 5, and the knife roller 2 indents the cardboard from bottom to top, that is, an indentation is formed on the lower surface of the cardboard, so as to meet different production needs.

[0023] A transmission mechanism is provided between the knife roller 2 and the bracket 1. The knife roller 2 makes a translational motion toward or away from the transmission roller 5 through the transmission mechanism. That is, the height of the knife roller 2 is adjusted relative to the transmission roller 5 to adapt to cardboards of different thicknesses and to adjust the depth of the indentation.

[0024] Both ends of the knife roller 2 are provided with a transmission mechanism, which includes a screw pair 6, a slider 7, a guide rail 9, a first driving source 10 and a synchronization rod 11. The guide rail 9 is vertically arranged on the bracket 1. Two symmetrically distributed guide rails 9 are provided on the bracket 1 at each end of the knife roller 2, and the corresponding two sliders 7 slide in the guide rails 9. A mounting block 8 is provided at the end of the knife roller 2. The sliders 7 are connected on both sides of the mounting block 8 to ensure the stability of the mounting block 8 when sliding up and down. The screw in the screw pair 6 is vertically arranged on the bracket 1, the nut in the screw pair 6 is connected to the mounting block 8, and the first driving source 10 is connected to the screw. The first driving source 10 usually adopts a motor and an auxiliary deceleration structure. The first driving source 10 drives the screw to rotate forward and backward, and the nut moves up and down along the screw, driving the mounting block 8 to move up and down. The first driving sources 10 at both ends of the knife roller 2 are connected by a synchronization rod 11 to achieve synchronization, and finally the knife roller 2 can be horizontally translated up and down. During the movement, the knife roller 2 and the transmission roller 5 always remain parallel.

[0025] In addition, a first driven gear 12 is provided at each end of the knife roller 2, a first driving gear 13 is provided on the bracket 1, and a first driving member 14 is also provided on the bracket 1 to drive the first driving gear 13 to rotate. The first driving member 14 is usually a motor to drive the first driving gear 13 to rotate. The first driving gear 13 and the first driven gear 12 are engaged with each other, and finally the knife roller 2 is rotated.

[0026] Transmission mechanisms can also be set at both ends of the transmission roller 5. The transmission mechanism structure is the same as the transmission mechanism on the knife roller 2, so that the transmission roller 5 can move closer to or away from the knife roller 2, that is, the transmission roller 5 can achieve height position adjustment.

[0027] A second driven gear 15 is provided at each end of the transmission roller 5, and a second driving gear 16 is provided on the bracket 1. The bracket 1 is also provided with a second driving member 17 for driving the second driving gear 16 to rotate. The second driving member 17 is usually a motor to drive the second driving gear 16 to rotate. The second driving gear 16 and the second driven gear 15 are engaged with each other, and finally the transmission roller 5 is rotated to realize the cardboard transmission.

[0028] A scoring knife 4 is provided on the surface of the knife roller 2, and the scoring knife 4 includes a second knife seat 41 and a scoring blade 42. The second knife seat 41 is extended axially along the knife roller 2, and the scoring blade 42 is located in the center of the second knife seat 41. The bottom surface of the second knife seat 41 is tightly attached to and adapted to the surface of the knife roller 2, that is, the bottom surface of the second knife seat 41 is a circular arc surface, which fits tightly with the circular arc surface of the knife roller 2. The second knife seat 41 is provided with a second fixing hole 43 on the front and rear sides of the scoring blade 42. A fastener is installed in the second fixing hole 43 to connect the second knife seat 41 to the surface of the knife roller 2, so that the second knife seat 41 can adjust the installation position along the surface of the knife roller 2, thereby realizing that the position of the scoring knife 4 is adjustable, which not only ensures that the scoring knife 4 is detachable, but also realizes that the spacing between adjacent scoring knives 4 on the same knife roller 2 is adjustable.

[0029] In addition to the above-mentioned gear transmission, the rotation of the knife roller 2 or the transmission roller 5 can also be driven by a chain drive or a synchronous belt drive. Specifically, the ends of the knife roller 2 are respectively provided with a driven sprocket, and the output end of the first transmission member 14 on the bracket 1 is provided with a driving sprocket. The driving sprocket and the driven sprocket are connected by a chain or a chain belt to realize chain transmission; the ends of the transmission roller 5 are respectively provided with a driven sprocket, and the output end of the second transmission member 17 on the bracket 1 is provided with a driving sprocket. The driving sprocket and the driven sprocket are connected by a chain or a chain belt to realize chain transmission. Similarly, in addition to the above-mentioned transmission methods, other transmission connection methods can also be used, which will not be repeated here.

[0030] Each knife roller 2 and transmission roller 5 are connected to a separate driving member, so that each knife roller 2 and transmission roller 5 can rotate independently, thereby independently controlling its own rotation speed, so that the knife roller 2 and transmission roller 5 can realize the three states of uniform speed, acceleration and deceleration and switch arbitrarily. For example, when two adjacent knife rollers 2 are at different rotation speeds, the distance between the indentations formed on the cardboard front and back is also different, that is, the knife roller 2 adopts different rotation speeds, and the distance between the indentations formed on the cardboard can be changed front and back, which is very flexible, and ultimately the distance between the indentations on the cardboard can be flexibly adjusted. Of course, the change in the rotation speed of the transmission roller 5 causes the change in the cardboard conveying speed, which will also cause the distance between adjacent indentations on the cardboard to change. That is, only the knife roller 2 or the transmission roller 5 needs to be adjusted to achieve the purpose of adjusting the distance between the corresponding indentations on the cardboard, without having to adjust the position of the knife roller 2. It is very convenient and greatly improves work efficiency.

[0031] Finally, a few points should be explained: First, in the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "install", "fix" and "connect" should be understood in a broad sense, which can be mechanical connection or electrical connection, or internal communication between two components, or direct connection. "Up", "down", "left" and "right" are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may change. The present invention is not limited to the above-mentioned optimal implementation method. Anyone can derive various other forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, all technical solutions that are the same or similar to those of the present application fall within the scope of protection of the present invention.

Claims

1. A knife roller structure with adjustable up and down motion, characterized in that: The invention comprises a support (1), wherein the support (1) is provided with a knife roller (2) and a transmission roller (5) which are parallel to each other, the knife roller (2) being located above or below the transmission roller (5), and cardboard being transmitted between the knife roller (2) and the transmission roller (5), and the knife roller (2) performing translational movement relative to the transmission roller (5) to move closer to or away from the transmission roller (5) through a transmission mechanism, and an indentation knife (4) for indenting the cardboard is provided on the knife roller (2).

2. The up and down adjustable knife roller structure according to claim 1, characterized in that: A transmission mechanism is provided between the knife roller (2) and the bracket (1), and the transmission mechanism comprises a screw pair (6), a slider (7), a guide rail (9), a first driving source (10) and a synchronization rod (11). The guide rail (9) is vertically arranged on the bracket (1), the slider (7) is slidably fitted on the guide rail (9), the slider (7) is connected to the end of the knife roller (2), the screw in the screw pair (6) is vertically arranged on the bracket (1), the nut in the screw pair (6) is connected to the slider (7), the first driving source (10) is connected to the screw to drive the screw to rotate forward and reverse, and the synchronization rod (11) is connected between the screw pairs (6) at both ends of the knife roller (2) to achieve synchronization.

3. The up and down adjustable knife roller structure according to claim 1, characterized in that: A transmission mechanism is also provided between the transmission roller (5) and the bracket (1), so that the transmission roller (5) can perform a translational movement relative to the knife roller (2) to move closer to or away from the knife roller (2).

4. The up and down adjustable knife roller structure according to claim 1, characterized in that: The two ends of the knife roller (2) are respectively provided with a first driven gear (12), the bracket (1) is provided with a first driving gear (13), and the bracket (1) is also provided with a first driving member (14) for driving the first driving gear (13) to rotate. The first driving gear (13) and the first driven gear (12) are meshed with each other to realize the rotation of the knife roller (2).

5. The up and down adjustable knife roller structure according to claim 1, characterized in that: The transmission roller (5) is provided with a second driven gear (15) at both ends, the bracket (1) is provided with a second driving gear (16), and the bracket (1) is also provided with a second driving member (17) for driving the second driving gear (16) to rotate. The second driving gear (16) and the second driven gear (15) are meshed with each other to realize the rotation of the transmission roller (5).

6. The up and down adjustable knife roller structure according to claim 1, characterized in that: The transmission roller (5) can also be rotated by a chain or a synchronous belt between the transmission roller (5) and the corresponding driving member.

7. The up and down adjustable knife roller structure according to claim 1, characterized in that: The knife roller (2) can also be rotated by a chain or a synchronous belt between the knife roller (2) and the corresponding driving member.

8. The up and down adjustable knife roller structure according to claim 1, characterized in that: The knife roller (2) is provided with an indentation knife (4), and a plurality of indentation knives (4) are evenly distributed on the surface of the knife roller (2).

9. The up and down adjustable knife roller structure according to claim 8, characterized in that: The indentation knife (4) comprises a second knife seat (41) and an indentation blade (42), wherein the second knife seat (41) is extended axially along the knife roller (2), and the indentation blade (42) is located on the second knife seat (41), and the bottom surface of the second knife seat (41) and the surface of the knife roller (2) are in close contact and matched with each other, and the second knife seat (41) is provided with a second fixing hole (43) at the front and rear sides of the indentation blade (42), and a fastener is installed in the second fixing hole (43) to connect the second knife seat (41) to the surface of the knife roller (2).

10. The up and down adjustable knife roller structure according to claim 1, characterized in that: Each knife roller (2) and transmission roller (5) is driven to rotate by a separate driving member, thereby independently controlling its own rotation speed and realizing free switching between uniform speed, acceleration and deceleration states.

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