Longitudinal cutter structure and carton longitudinal cutter assembly

Abstract

The longitudinal cutter structure comprises a horizontal base and a vertical base, the vertical base is connected to the upper portion of the horizontal base, the horizontal base comprises a fixing base, the fixing base is rotationally connected with a cutter frame, a driven wheel and a driving wheel are arranged on the front portion and the rear portion of one side of the cutter frame, the driving wheel is connected to the cutter frame, and the driven wheel is connected to the cutter frame. The driven wheel is connected with a longitudinal cutter, and the driving wheel drives the driven wheel to rotate so as to drive the longitudinal cutter to conduct cutting. The utility model further provides a carton longitudinal cutter assembly. The multiple longitudinal cutter structures can work synchronously, and the adjacent position relation of the longitudinal cutter structures can be adjusted along the cross beam so as to adapt to paperboards of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of carton machines, in particular to a longitudinal cutting knife structure and a carton longitudinal cutting knife assembly. Background Art

[0002] The longitudinal cutter in the carton machine cuts the corrugated cardboard longitudinally. In order to improve efficiency and reduce order change time and waste of corrugated cardboard during order change, a double-station longitudinal cutter or a multi-station longitudinal cutter is generally used. Each station has a longitudinal cutter structure. The main structure of the longitudinal cutter structure is a rotatable tool holder, on which a longitudinal cutter is arranged. In order to control the operation of the longitudinal cutter, that is, to control the up and down swing of the longitudinal cutter, a telescopic cylinder is usually arranged between the tool holder and the base to drive the tool holder to swing, thereby driving the longitudinal cutter to swing. Although the swing of the longitudinal cutter is realized, the swing of the longitudinal cutter cannot be accurately controlled, and the telescopic cylinder will have a certain impact inertia, which has an adverse effect on the longitudinal cutting accuracy. Utility Model Content

[0003] The utility model aims to provide a longitudinal cutting knife structure and a carton longitudinal cutting knife assembly designed to solve the deficiencies of the above-mentioned technology.

[0004] The utility model provides a longitudinal cutting knife structure, including a horizontal base and a vertical base, the vertical base is connected to the top of the horizontal base, the horizontal base includes a fixed seat, the fixed seat is connected to a knife holder, one side of the knife holder is provided with a driven wheel and a driving wheel at the front and back, the driving wheel is connected to the knife holder, the driven wheel is connected to the longitudinal cutting knife, the driving wheel drives the driven wheel to rotate, thereby driving the longitudinal cutting knife to cut; the horizontal base is also provided with a lead screw along the front and back directions of the knife holder, the lead screw is transmission connected to a first slider, the first slider is connected to a pull rod, the other end of the pull rod is connected to the front end of the knife holder; the lead screw rotates to drive the first slider to move along the axial direction of the lead screw, and the knife holder is driven to rotate through the pull rod.

[0005] Preferably, the horizontal base is also provided with a first linear guide rail in the same direction as the lead screw, the first linear guide rail is arranged above the driving wheel and the driven wheel, and the first linear guide rail slides with the first slider; the lead screw is connected to the servo motor, and the lead screw is driven to rotate by the servo motor.

[0006] Preferably, a pressing plate is provided at the bottom of the tool holder along the front-to-back direction, and the front end of the pressing plate is bent upward. When in working state, the bottom surface of the pressing plate moves with the tool holder to a position where it can press the upper surface of the object to be cut; or the pressing plate is arranged on a fixed seat, the pressing plate is located below the tool holder, and the front end of the pressing plate is bent upward; when in working state, the bottom surface of the pressing plate can press the upper surface of the object to be cut.

[0007] Further optimized, the screw transmission is equipped with a fixed nut, the screw rotates to drive the fixed nut to translate along the axial direction of the screw, and the screw drives the first slider to move through the fixed nut, and the first slider is hinged to one end of the pull rod.

[0008] Preferably, the tool holder is provided with a tensioning wheel between the driving wheel and the driven wheel.

[0009] Preferably, the vertical base is an inverted L-shaped plate structure, the bottom end of the vertical part of the vertical base is connected to the horizontal base, the horizontal part of the vertical base is parallel to the horizontal base, the horizontal part is provided with gears and a driving device for driving the gears to rotate, the vertical part is provided with a second slider, and the top surface of the horizontal base is provided with a third slider.

[0010] The utility model also provides a longitudinal cutting knife assembly, including the above-mentioned longitudinal cutting knife structure, which also includes a crossbeam, the crossbeam is provided with a second linear guide rail along the length direction, the second linear guide rail is slidably matched with the second slider, the crossbeam is provided with a rack in the same direction as the second linear guide rail, and the rack is meshed with the gear; the driving device drives the gear to rotate so that the gear drives the longitudinal cutting knife structure to move along the second linear guide rail.

[0011] For further optimization, the crossbeam is also provided with a third linear guide rail in the same direction as the second linear guide rail, and the third linear guide rail is slidably matched with the third sliding block.

[0012] Further optimization also includes a connecting shaft arranged in the same direction as the crossbeam, the connecting shaft passes through the axial center position of the driving wheel and is fixedly connected to the driving wheel, multiple longitudinal cutting knife structures are arranged in series on the connecting shaft, and a driving transmission structure is provided at the end of the connecting shaft. The connecting shaft is driven to rotate by the driving transmission structure, and the connecting shaft drives the driving wheels in all the longitudinal cutting knife structures to rotate synchronously.

[0013] The technical effect of the utility model is that the key shaft drives the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate, so that the longitudinal cutting knife on the driven wheel rotates to cut, and the base and the tool holder are rotatably connected, one end of the pull rod is hinged on the slider, and the other end is hinged on the front end of the tool holder. As the first slider translates, the pull rod is pulled, and the pull rod then pulls the tool holder to swing, thereby realizing the swing of the longitudinal cutting knife and controlling the cutting and cutting depth of the longitudinal cutting knife. The combined design of the pull rod and the slider ensures that no inertial impact occurs when the pull rod pulls the tool holder, making the swing of the tool holder more precise and smooth.

[0014] The utility model also designs a carton longitudinal cutter assembly, which includes the above-mentioned longitudinal cutter structure and also includes a connecting shaft arranged in the same direction as the crossbeam, the connecting shaft is inserted into the key hole, and multiple longitudinal cutter structures can be inserted into the connecting shaft in parallel, and the end of the connecting shaft is provided with a driving transmission structure, and the connecting shaft is driven to rotate by the driving transmission structure. The connecting shaft drives the driving wheels in all the longitudinal cutter structures to rotate synchronously, thereby realizing that multiple longitudinal cutter structures work synchronously. At the same time, the longitudinal cutter structures can adjust the adjacent position relationship along the crossbeam to adapt to cardboards of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structure diagram of the carton slitting knife assembly;

[0016] Figure 2 This is another structural diagram of the carton slitting knife assembly from another perspective;

[0017] Figure 3 This is another structural diagram of the carton slitting knife assembly from another perspective;

[0018] Figure 4 It is the overall structural diagram of the longitudinal cutting knife structure;

[0019] Figure 5 This is another perspective structural diagram of the longitudinal cutting knife structure;

[0020] Figure 6 This is another perspective diagram of the longitudinal cutting knife structure.

[0021] In the figure: 1. horizontal base; 2. vertical base; 3. fixed base; 4. tool holder; 5. driven wheel; 6. driving wheel; 7. key shaft; 8. longitudinal cutting knife; 9. first linear guide; 10. first slider; 11. lead screw; 12. pull rod; 13. pressure plate; 14. fixing nut; 16. tensioning wheel; 17. key hole; 18. crossbeam; 19. second linear guide; 20. second slider; 21. rack; 22. gear; 23. third linear guide; 24. third slider; 25. connecting shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0023] The utility model provides a longitudinal cutting knife structure, which includes a horizontal base 1 and a vertical base 2. The vertical base 2 is connected to the top of the horizontal base 1. In this embodiment, the horizontal base 1 and the vertical base 2 are both plate-like structures. The horizontal base 1 is a horizontal plate-like structure. A fixed base 3 extends downward from one side of the bottom of the horizontal base 1. The vertical base 2 is an inverted L-shaped plate-like structure. The top of the vertical part of the vertical base 2 is connected to the horizontal base 1, and the horizontal part of the vertical base 2 is parallel to the horizontal base 1.

[0024] A tool holder 4 is provided on the fixed seat 3, and the tool holder 4 is rotatably connected to the fixed seat 3. The tool holder 4 is a plate-like structure fixed vertically to the bottom of the horizontal base 1. A driven wheel 5 and a driving wheel 6 are provided on one side of the tool holder 4, that is, the driven wheel 5 and the driving wheel 6 are distributed front and back along the horizontal direction of the horizontal base 1, and the central axes of the driven wheel 5 and the driving wheel 6 are staggered in height. In this embodiment, the driving wheel 6 is fixed at a higher position than the driven wheel 5. The driving wheel 6 is connected to the driven wheel 5 through a belt and drives the driven wheel 5 to rotate. The belt is located on one side of the driving wheel 6 and the driven wheel 5. The driving wheel 6 is rotatably connected to the tool holder 4 through a key shaft 7, and a longitudinal cutting knife 8 is provided on the periphery of the driven wheel 5.

[0025] A first linear guide rail 9 is provided at the bottom of the horizontal base 1 along the front-rear direction of the tool holder 4. The first linear guide rail 9 is slidably matched with a first slider 10. A lead screw 11 in the same direction as the first linear guide rail 9 is also provided on the horizontal base 1. The first slider 10 is transmission-connected with the lead screw 11. A servo motor is provided at one end of the lead screw 11 to drive the lead screw 11 to rotate. The rotation of the lead screw 11 drives the first slider 10 to reciprocate along the first linear guide rail 9. The advantage of the servo motor is that the first slider 10 slides along the lead screw 11 and can stay at any position of the lead screw. The position accuracy is very accurate. A pull rod 12 is hinged, and the other end of the pull rod 12 is connected to the front end of the tool holder 4, that is, one end of the pull rod 12 is hinged to the first slider 10, and the other end is hinged to the front end of the tool holder 4. The first slider 10 moves horizontally to drive the pull rod 12 to move. Since the two ends of the pull rod 12 are respectively hinged to the first slider 10 and the tool holder 4, the tool holder 4 rotates around the fixed seat 3 under the pulling of the pull rod 12, that is, the front end of the tool holder 4 moves up and down, and then drives the driven wheel 5 to move up and down, thereby realizing the up and down movement of the longitudinal cutting knife 8 to control the operation of the longitudinal cutting knife 8, and the cutting depth of the longitudinal cutting knife 8 can be adjusted at the same time.

[0026] A horizontal pressing sheet 13 is provided at the bottom of the tool holder 4 along the front-to-back direction. The pressing sheet 13 is fixed to the bottom of the tool holder 4 by fasteners. The pressing sheet 13 is provided with an avoidance groove at the longitudinal cutting knife 8 to avoid interfering with the rotation of the longitudinal cutting knife 8. A waist-shaped hole is provided at the bottom of the tool holder 4. The pressing sheet 13 is fixed in the waist-shaped hole by fasteners, so that the height of the pressing sheet 13 relative to the tool holder 4 can be adjusted. The pressing sheet 13 is horizontally arranged to press the cardboard at the same time during longitudinal cutting. The front end of the pressing sheet 13 is bent upward to guide the cardboard feeding.

[0027] Of course, the pressing piece 13 can also be fixed to the bottom of the fixing seat 3 and can be fixedly installed according to actual needs.

[0028] The lead screw 11 is slidably matched with the first slider 10, that is, the first slider 10 can reciprocate along the length direction of the lead screw 11. The first slider 10 is fixed with a fixing nut 14, and the fixing nut 14 slides along the lead screw 11 together with the first slider 10. The first slider 10 is hinged to one end of the pull rod 12, so that the nut, the first slider 10 and the fixed shaft are designed as an integrated whole, so that the first slider 10 drives the pull rod 12 to move more stably and with lighter weight.

[0029] The tool holder 4 is provided with a tensioning wheel 16 between the driving wheel 6 and the driven wheel 5. The tensioning wheel 16 is used to adjust the tightness of the belt. A shaft body is provided on the tool holder 4, and the tensioning wheel 16 is sleeved on the shaft body. A waist-shaped hole is opened on the tool holder 4. The shaft body is movably connected in the waist-shaped hole and can adjust its position along the length direction of the waist-shaped hole, so that the position of the tensioning wheel 16 is adjustable.

[0030] A key hole 17 is provided at the center of the key shaft 7. In this embodiment, the key hole 17 is a hexagonal hole.

[0031] It also includes a cross beam 18, which is provided with a second linear guide 19 along its length, a second slider 20 slidably matched with the second linear guide 19 is provided on the vertical base 2, and the second slider 20 is located in front of the vertical part of the vertical base 2, a rack 21 in the same direction as the second linear guide 19 is provided on the cross beam 18, a gear 22 matched with the rack 21 is provided on the vertical base 2, and a driving device for driving the gear 22 to rotate is provided on the vertical base 2, so as to realize the reciprocating movement of the entire longitudinal cutting knife 8 structure along the cross beam 18.

[0032] It should be noted that the gear 22 and the driving device are installed on the horizontal part, the gear 22 is installed on the bottom of the horizontal part, and the second slider 20 is installed on the vertical part, so that the longitudinal cutting knife 8 structure can stably translate along the second linear guide rail 19.

[0033] A third linear guide rail 23 in the same direction as the second linear guide rail 19 is also provided on the crossbeam 18, and a third slider 24 slidingly matched with the third linear guide rail 23 is provided on the top surface of the horizontal base 1, so that the second slider 20, the third slider 24 and the gear 22 form a three-sided surrounding design, so that the longitudinal cutting knife 8 structure can reciprocate more smoothly along the crossbeam 18.

[0034] The utility model also provides a carton longitudinal cutting knife assembly, which includes the above-mentioned longitudinal cutting knife structure, and also includes a key shaft 7 arranged in the same direction as the cross beam 18, the key shaft 7 is arranged horizontally, the key shaft 7 is inserted into the key hole 17, and multiple longitudinal cutting knife structures can be inserted into the same key shaft 7 in parallel. The end of the key shaft 7 is provided with a driving transmission structure, and the key shaft 7 is driven to rotate by the driving transmission structure. The key shaft 7 drives the driving wheels 6 in all the longitudinal cutting knife structures to rotate synchronously, thereby realizing the synchronous rotation of all the longitudinal cutting knives 8.

[0035] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A longitudinal cutting knife structure, characterized in that: The utility model comprises a horizontal base (1) and a vertical base (2), wherein the vertical base (2) is connected to the upper part of the horizontal base (1), and the horizontal base (1) comprises a fixed base (3), wherein the fixed base (3) is connected to a knife holder (4), and a driven wheel (5) and a driving wheel (6) are arranged at the front and rear of one side of the knife holder (4), wherein the driving wheel (6) is connected to the knife holder (4), and the driven wheel (5) is connected to a longitudinal cutting knife (8), and the driving wheel (6) drives the driven wheel (5) to rotate. The horizontal base (1) is also provided with a lead screw (11) along the front-rear direction of the tool holder (4), the lead screw (11) is connected to a first slider (10), the first slider (10) is connected to a pull rod (12), the other end of the pull rod (12) is connected to one end of the tool holder (4); the lead screw (11) rotates to drive the first slider (10) to move along the axial direction of the lead screw, and drives the tool holder to rotate through the pull rod (12).

2. The longitudinal cutting blade structure according to claim 1, characterized in that: The horizontal base (1) is also provided with a first linear guide rail (9) in the same direction as the lead screw (11); the first linear guide rail (9) is provided above the driving wheel (6) and the driven wheel (5); the first linear guide rail (9) is slidably matched with the first slider (10); the lead screw (11) is connected to a servo motor, and the lead screw (11) is driven to rotate by the servo motor.

3. The longitudinal cutting blade structure according to claim 1, characterized in that: A pressing sheet (13) is provided at the bottom of the knife holder (4) along the front-to-back direction, and the front end of the pressing sheet (13) is bent upwards. When in working state, the bottom surface of the pressing sheet (13) moves with the knife holder to a position where it can press the upper surface of the object to be cut; or the pressing sheet (13) is arranged on the fixed seat (3), the pressing sheet (13) is located below the knife holder (4), and the front end of the pressing sheet (13) is bent upwards; when in working state, the bottom surface of the pressing sheet (13) can press the upper surface of the object to be cut.

4. The longitudinal cutting blade structure according to claim 2, characterized in that: The lead screw (11) is coupled with a fixing nut (14) for transmission. The lead screw (11) rotates to drive the fixing nut (14) to translate axially along the lead screw (11). The lead screw (11) drives the first slider (10) to move via the fixing nut (14). The first slider (10) is hinged to one end of the pull rod (12).

5. The longitudinal cutting blade structure according to claim 3, characterized in that: The tool holder (4) is provided with a tensioning wheel (16) between the driving wheel (6) and the driven wheel (5).

6. The longitudinal cutting blade structure according to claim 5, characterized in that: The tool holder (4) is provided with an axle body, the tension wheel (16) is sleeved on the axle body, the tool holder (4) is provided with a waist-shaped hole, the axle body is movably connected in the waist-shaped hole and can adjust its position along the length direction of the waist-shaped hole.

7. The longitudinal cutting blade structure according to claim 1, characterized in that: The vertical base (2) is an inverted L-shaped plate structure. The bottom end of the vertical part of the vertical base (2) is connected to the horizontal base (1). The horizontal part of the vertical base (2) is parallel to the horizontal base (1). The horizontal part is provided with a gear (22) and a driving device for driving the gear (22) to rotate. The vertical part is provided with a second slider (20). The top surface of the horizontal base (1) is provided with a third slider (24).

8. A carton slitting knife assembly, characterized in that: The longitudinal cutting knife structure comprises the longitudinal cutting knife structure as claimed in any one of claims 1 to 7, and further comprises a cross beam (18), wherein the cross beam (18) is provided with a second linear guide rail (19) along the length direction, the second linear guide rail (19) is slidably matched with a second slider (20), and the cross beam (18) is provided with a rack (21) in the same direction as the second linear guide rail (19), and the rack (21) is meshed with a gear (22); the driving device drives the gear (22) to rotate so that the gear (22) drives the longitudinal cutting knife structure to move along the second linear guide rail (19).

9. The carton slitting knife assembly according to claim 8, characterized in that: The crossbeam (18) is also provided with a third linear guide rail (23) in the same direction as the second linear guide rail (19), and the third linear guide rail (23) is slidably matched with the third sliding block (24).

10. The carton slitting knife assembly according to claim 9, characterized in that: It also includes a connecting shaft (25) arranged in the same direction as the crossbeam (18), the connecting shaft (25) passing through the axis center position of the driving wheel and fixedly connected to the driving wheel, a plurality of longitudinal cutting knife structures are arranged in series on the connecting shaft (25), and a driving transmission structure is provided at the end of the connecting shaft (25). The connecting shaft (25) is driven to rotate by the driving transmission structure, and the connecting shaft (25) drives the driving wheels (6) in all longitudinal cutting knife structures to rotate synchronously.

Images