Anvil Lifting Structure for a Slitting Machine

Abstract

This utility model discloses a knife-anvil lifting structure for a slitting machine, relating to the field of cardboard processing equipment. It includes a frame with a knife-anvil and a knife beam horizontally positioned in the middle. Guide rails are provided on both sides of the frame. Knife-anvil supports are mounted at both ends of the knife-anvil, slidably connected to the guide rails via sliding blocks. Supports are provided on the sides of the knife-anvil supports, with slotted holes on their surfaces. A column is provided on the lower surface of the knife-anvil supports. Knife beam supports are mounted at both ends of the knife beam, rotatably connected to the frame via a rotating shaft. A support plate is mounted on the upper surface of the knife beam supports, with rollers rotatably connected to the sides of the support plate, the rollers contacting the column. A cylinder is fixedly connected to the bottom of the frame, with a hinge seat mounted on the piston rod end of the cylinder. The hinge seat is connected to the slotted holes via a pin. This utility model overcomes the shortcomings of existing technologies, effectively achieving convenient height adjustment and maintenance, and significantly improving equipment operating efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to cardboard processing equipment, especially a knife and anvil lifting structure for a slitting machine. Background Technology

[0002] The slitting machine has two types of cutter positions: one below the cardboard and the other above it. When the cutter is below the cardboard, the corresponding anvil is above it. During production, when the thickness of the cardboard changes, the anvil needs to be adjusted accordingly to prevent paper blockage. During maintenance, the anvil needs to be raised to a certain height to ensure sufficient maintenance space.

[0003] In existing technologies, anvil lifting structures are mainly divided into two categories: one type utilizes an eccentric design of the rotating shaft, where the anvil rotates around the shaft at different angles by changing the rotation angle of the blade beam to adjust the anvil's height. However, this structure requires the operator to use a pry bar to flip the anvil during maintenance, which is time-consuming, labor-intensive, and inefficient. The other type uses a combination of cylinders, chains, and guide rails. Although this can achieve automated height adjustment, the structure is complex, costly, and difficult to maintain. Furthermore, the large cylinder diameter occupies a significant amount of space. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a knife and anvil lifting structure for a slitting machine, which overcomes the shortcomings of the prior art, is reasonably designed, effectively realizes the convenience of height adjustment and maintenance, and significantly improves the operating efficiency and stability of the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A knife-anvil lifting structure for a slitting machine includes a frame, wherein a knife-anvil and a knife beam are horizontally arranged in the middle of the frame, and the knife beam is located below the knife-anvil.

[0007] The features are as follows: guide rails are vertically arranged on both the left and right inner sides of the frame; knife anvil supports are fixedly installed on both the left and right ends of the knife anvil; the knife anvil supports are slidably connected to the guide rails via sliding blocks; a support is fixedly connected to the side of the knife anvil support; a strip-shaped hole is vertically opened on the surface of the support; and a column is fixedly connected to the lower surface of the knife anvil support.

[0008] The frame has pivot seats on its left and right inner sides, and blade supports are fixedly installed at both ends of the blade beam. The blade supports are rotatably connected to the pivot seats via pivots. A support plate is fixedly installed on the upper surface of the blade supports, and rollers are rotatably connected to the side of the support plate. The circumferential surface of the rollers contacts the column. Cylinders are fixedly connected to the left and right sides of the bottom of the frame. A hinge seat is installed at the end of the piston rod of the cylinder, and the hinge seat is connected to the slotted hole via a pin.

[0009] Preferably, a limiting through hole is formed on the surface of the knife anvil support, and a nut sleeve is coaxially provided on the outside of the limiting through hole. The nut sleeve is fixedly installed on the outer surface of the knife anvil support, and a limiting bolt is connected to the nut sleeve by a thread. The end of the limiting bolt is in movable contact with the side of the frame.

[0010] Preferably, the side of the support plate is fixedly connected with a fixing bolt, and the roller is movably sleeved on the outer surface of the fixing bolt.

[0011] Preferably, the knife and anvil support, the support, and the column are designed as an integrated structure.

[0012] This invention provides a knife-anvil lifting structure for a slitting machine, offering the following advantages: The rollers at the upper end of the knife beam support apply an upward thrust to the column, driving the entire knife-anvil support and the knife-anvil to slide upwards along the guide rail, thus adjusting the height of the knife-anvil. Furthermore, the sliding connection between the pin and the slotted hole on the support surface ensures that the movement of the knife-anvil is unaffected by the cylinder. Therefore, when adjusting the height of the knife-anvil to meet the cutting requirements of different cardboard thicknesses, the interference of cylinder resistance on the adjustment accuracy can be effectively isolated. When maintenance is required, the piston rod of the cylinder can be extended upwards, pushing the support to lift the entire knife-anvil support and the knife-anvil to a preset height, providing sufficient maintenance space for maintenance personnel to inspect and replace the knife-anvil and related components. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of this utility model or the prior art will be briefly introduced below.

[0014] Figure 1 A schematic diagram of the structure of this utility model;

[0015] Figure 2 A partial structural schematic diagram of this utility model;

[0016] Figure 3 A partial structural diagram of this utility model;

[0017] Explanation of the labels in the diagram:

[0018] 1. Frame; 2. Anvil; 3. Blade beam; 4. Guide rail; 5. Anvil support; 6. Sliding block; 7. Bracket; 8. Strip hole; 9. Column; 10. Shaft seat; 11. Blade beam support; 12. Support plate; 13. Roller; 14. Cylinder; 15. Hinge seat; 16. Pin; 17. Nut sleeve; 18. Limit bolt; 19. Fixing bolt. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] Example 1, as Figure 1-3 As shown, a knife anvil lifting structure for a slitting machine includes a frame 1, with a knife anvil 2 and a knife beam 3 horizontally arranged in the middle of the frame 1, and the knife beam 3 located below the knife anvil 2.

[0021] The features are as follows: guide rails 4 are vertically arranged on both the left and right inner sides of the frame 1, and knife anvil supports 5 are fixedly installed on both the left and right ends of the knife anvil 2. The knife anvil supports 5 are slidably connected to the guide rails 4 through sliding blocks 6. A support 7 is fixedly connected to the side of the knife anvil supports 5. A strip hole 8 is vertically opened on the surface of the support 7. A column 9 is fixedly connected to the lower surface of the knife anvil supports 5.

[0022] The left and right inner sides of the frame 1 are provided with pivot seats 10. The left and right ends of the blade beam 3 are fixedly installed with blade beam brackets 11. The blade beam brackets 11 are rotatably connected to the pivot seats 10 through pivots. The upper surface of the blade beam brackets 11 is fixedly installed with a support plate 12. The side of the support plate 12 is rotatably connected with rollers 13. The circumferential surface of the rollers 13 is in contact with the column 9. The left and right sides of the bottom of the frame 1 are fixedly connected with cylinders 14. The piston rod end of the cylinder 14 is installed with a hinge seat 15. The hinge seat 15 is connected to the slot 8 through a pin 16.

[0023] Working principle:

[0024] During production, when the thickness of the cardboard changes, an external servo motor can drive the blade beam 3 to rotate around the pivot seat 10. This rotation of the blade beam 3 drives the blade beam support 11 to rotate. Since the roller 13 at the upper end of the blade beam support 11 is in rolling contact with the lower surface of the column 9, the rotation of the blade beam 3 causes the roller 13 to roll along the lower surface of the column 9. The supporting force of the roller 13 on the column 9 allows the anvil 2 to move up and down along the guide rail 4 as the blade beam 3 rotates, thus raising or lowering the anvil 2 and adjusting its height. This allows cardboard of different thicknesses to pass smoothly between the anvil 2 and the blade beam 3.

[0025] In this embodiment, the sliding effect formed by the cooperation of the guide rail 4 and the sliding block 6 between the anvil support 5 and the frame 1 can effectively reduce frictional resistance, reducing resistance by 90% compared to the traditional chain / hinged structure, thereby effectively eliminating the risk of jamming during production adjustments. Furthermore, during this process, the sliding connection between the pin 16 and the slotted hole 8 on the surface of the support 7 allows the pin 16 to slide up and down within the slotted hole 8 when the anvil support 5 and the anvil 2 move upwards, ensuring that the movement of the anvil 2 is not affected by the cylinder 14. Therefore, when adjusting the height of the anvil 2 to meet the cutting requirements of different cardboard thicknesses, the interference of the cylinder 14's resistance on the adjustment accuracy can be effectively isolated.

[0026] When maintenance is required, a certain pressure of air can be introduced into the rodless chamber of cylinder 14 so that the piston rod of cylinder 14 extends upward, thereby pushing the bracket 7 upward through the hinge seat 15 and the pin 16, and then driving the entire anvil bracket 5 and anvil 2 upward to a preset height, so as to leave enough maintenance space for maintenance personnel to inspect and replace the anvil and its related components.

[0027] In Example 3, as a further preferred embodiment of Example 1, a limiting through hole is formed on the surface of the anvil support 5. A nut sleeve 17 is coaxially disposed on the outer side of the limiting through hole. The nut sleeve 17 is fixedly installed on the outer surface of the anvil support 5. A limiting bolt 18 is threadedly connected inside the nut sleeve 17, and the end of the limiting bolt 18 is in movable contact with the side of the frame 1. Therefore, after the height of the anvil 2 is adjusted to a suitable position, the limiting bolt 18 can be screwed into the nut sleeve 17, so that the end of the limiting bolt 18 passes through the limiting through hole and abuts against the frame 1, thereby achieving a stable positioning of the anvil 2, preventing displacement during production, and ensuring adjustment accuracy and operational safety.

[0028] In Embodiment Four, as a further preferred embodiment of Embodiment One, a fixing bolt 19 is fixedly connected to the side of the support plate 12, and a roller 13 is movably sleeved on the outer surface of the fixing bolt 19. The fixing bolt 19 provides axial positioning of the roller 13, preventing it from shifting due to vibration or external force during production. Through the rolling contact between the roller 13 and the column 9, when an upward thrust is applied to the column 9 via the roller 13, uneven wear caused by lateral torque can be effectively eliminated.

[0029] In Example 5, as a further preferred embodiment of Example 1, the knife and anvil support 5, the support 7, and the column 9 are designed as a single integrated structure. This integrated design effectively enhances the stability of the overall structure and avoids the loosening problems that may occur when multiple components are joined together.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A knife-anvil lifting structure for a slitting machine, comprising a frame (1), wherein a knife-anvil (2) and a knife beam (3) are horizontally arranged in the middle of the frame (1), and the knife beam (3) is located below the knife-anvil (2); characterized in that The frame (1) has guide rails (4) vertically installed on both the left and right inner sides. The anvil (2) has anvil brackets (5) fixedly installed on both the left and right ends. The anvil brackets (5) are slidably connected to the guide rails (4) via sliding blocks (6). The anvil brackets (5) have brackets (7) fixedly connected to the side of the anvil brackets (5). The brackets (7) have vertical slots (8) on their surface. The anvil brackets (5) have columns (9) fixedly connected to their lower surface. The frame (1) has a rotating shaft seat (10) on its left and right inner sides. The blade beam (3) has a blade beam bracket (11) fixedly installed at both ends. The blade beam bracket (11) is rotatably connected to the rotating shaft seat (10) through a rotating shaft. A support plate (12) is fixedly installed on the upper surface of the blade beam bracket (11). A roller (13) is rotatably connected to the side of the support plate (12). The circumferential surface of the roller (13) is in contact with the column (9). A cylinder (14) is fixedly connected to both the left and right sides of the bottom of the frame (1). A hinge seat (15) is installed at the end of the piston rod of the cylinder (14). The hinge seat (15) is connected to the strip hole (8) through a pin (16).

2. An anvil lifting structure for a slitting machine according to claim 1, characterized in that: The surface of the knife anvil support (5) has a limiting through hole, and a nut sleeve (17) is coaxially provided on the outside of the limiting through hole. The nut sleeve (17) is fixedly installed on the outer surface of the knife anvil support (5). A limiting bolt (18) is connected inside the nut sleeve (17) by a thread. The end of the limiting bolt (18) is in movable contact with the side of the frame (1).

3. An anvil lifting structure for a slitting machine as defined in claim 1, characterized in that: The side of the support plate (12) is fixedly connected with a fixing bolt (19), and the roller (13) is movably sleeved on the outer surface of the fixing bolt (19).

4. An anvil lifting structure for a slitting machine according to claim 1, characterized in that: The knife and anvil support (5), support (7) and column (9) are designed as an integrated structure.

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