A paper pressing wheel for a die cutting machine

Abstract

The utility model relates to a kind of paper pressing wheel for die-cutting machine, including mounting seat, fixed hole is opened in mounting seat, the side of fixed hole is equipped with opening slot, locking bolt is threadedly connected with the opening slot in mounting seat, the side of mounting seat is equipped with support, one end of support is equipped with swing arm, swing arm middle part is rotatably connected with support, one end of swing arm is rotatably equipped with pressure roller, other end is hingedly equipped with screw rod, one end of screw rod passes through support and is equipped with spring, it is formed lever structure by swing arm middle part and support hinged, one end pressure roller contacts paper, other end hinged screw rod and spring, utilize the lever action of swing arm to convert the elastic force of spring into the contact pressure of pressure roller stable, avoid the damage of material belt caused by rigid extrusion, ensure that pressure roller is with constant pressure to adhere material belt surface, guarantee the stability and positioning accuracy of material conveying in die-cutting process.

Description

Technical Field

[0001] This utility model relates to the field of die-cutting machine technology, and specifically to a pressure roller for a die-cutting machine. Background Technology

[0002] The pressure rollers on the die-cutting machine work in conjunction with the feeding rollers to form a clamping force, stably conveying the material and ensuring a uniform feed speed. They also assist in the precise positioning and alignment of the material, correcting any deviations. At the same time, they eliminate wrinkles and stabilize tension through uniform pressure, and use elastic materials to protect the material surface from damage. They can also assist in removing waste materials. They are key components that ensure die-cutting accuracy, production efficiency, and finished product quality.

[0003] Traditional die-cutting machines mostly use rigid paper pressing devices during the material conveying process. Although these devices can ensure the conveying of the material to a certain extent, when the thickness of the material fluctuates, the rigid paper pressing device cannot automatically adjust the pressure, which can easily lead to excessive compression of the material during the conveying process, resulting in problems such as material breakage and wrinkling, which seriously affect the quality of products and the stability of production. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a paper pressing roller for a die-cutting machine.

[0005] The purpose of this utility model can be achieved through the following technical solution: A paper pressing wheel for a die-cutting machine includes a mounting base, a fixing hole on the mounting base, an opening groove on one side of the fixing hole, a locking bolt threaded onto the mounting base and passing through the opening groove, a bracket on one side of the mounting base, a swing arm at one end of the bracket, the middle part of the swing arm being rotatably connected to the bracket, a pressure wheel rotatably mounted at one end of the swing arm, and a screw hinged to the other end, with one end of the screw passing through the bracket and fitted with a spring.

[0006] Preferably, the screw is threaded with an adjusting nut that abuts against the spring.

[0007] Preferably, a groove is vertically provided on one side of the mounting base, a slide rail that mates with the groove is provided on the bracket, a lead screw and nut are provided on the bracket, a lead screw that is threadedly connected to the lead screw and nut is rotatably provided on the mounting base, and a knob is provided at one end of the lead screw.

[0008] Preferably, the side of the mounting base is provided with scale markings, and the bracket is provided with indicator arrows corresponding to the scale markings.

[0009] Preferably, the surface of the pressure roller is covered with a rubber layer.

[0010] Preferably, the lead screw is a trapezoidal threaded lead screw.

[0011] Preferably, the swing arm includes a first arm segment and a second arm segment. The first arm segment has a first rotating shaft in the middle. The bracket has a shaft hole corresponding to the first rotating shaft. One end of the first arm segment has a first pin that is rotatably connected to the screw. The other end is hinged to the second arm segment through a second pin. One end of the second pin is threaded with a lock nut. The second arm segment has a second rotating shaft for installing the pressure roller.

[0012] The beneficial effects of this utility model are as follows: by hinged to the bracket in the middle of the swing arm to form a lever structure, one end of the pressure roller contacts the paper and the other end is hinged to the screw and spring. The lever effect of the swing arm is used to convert the elastic force of the spring into a stable contact pressure of the pressure roller, avoiding the material strip damage caused by rigid extrusion, ensuring that the pressure roller adheres to the surface of the material strip with constant pressure, and ensuring the stability and positioning accuracy of material conveying during the die-cutting process. Attached Figure Description

[0013] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a paper pressing roller for a die-cutting machine according to the present invention.

[0015] Figure 2 This is a cross-sectional view of a pressure roller for a die-cutting machine according to the present invention.

[0016] Figure 3 This is a cross-sectional view of a paper pressure roller bracket for a die-cutting machine according to the present invention.

[0017] Figure 4 for Figure 1 A partial schematic diagram of point A in the middle.

[0018] The labels in the diagram represent: 1. Mounting base; 2. Fixing hole; 3. Opening slot; 4. Locking bolt; 5. Bracket; 6. Swing arm; 601. First arm section; 602. Second arm section; 7. Pressure roller; 8. Screw; 9. Spring; 10. Adjusting nut; 11. Slide groove; 12. Slide rail; 13. Lead screw nut; 14. Lead screw; 15. Knob; 16. Scale mark; 17. Indicating arrow; 18. Rubber layer; 19. First rotating shaft; 20. Shaft hole; 21. First pin; 22. Second pin; 23. Locking nut; 24. Second rotating shaft. Detailed Implementation

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] See Figures 1 to 4 As shown, the structure of this utility model is as follows: a pressure roller for a die-cutting machine, including a mounting base 1, a fixing hole 2 on the mounting base 1, an opening groove 3 on one side of the fixing hole 2, a locking bolt 4 threaded onto the mounting base 1 passing through the opening groove 3, a bracket 5 on one side of the mounting base 1, a swing arm 6 at one end of the bracket 5, the middle part of the swing arm 6 being rotatably connected to the bracket 5, a pressure roller 7 rotatably mounted at one end of the swing arm 6, and a screw 8 hinged to the other end, one end of the screw 8 passing through the bracket 5 and fitted with a spring 9. Specifically, the mounting base 1 is fixed to the frame of the die-cutting machine through the fixing hole 2. The opening groove 3 on one side of the fixing hole 2 cooperates with the locking bolt 4. The compression deformation of the opening groove 3 when the bolt is tightened achieves the rapid positioning and clamping of the pressure roller on the frame. The bracket 5 is installed on one side of the mounting base 1, providing a rotation fulcrum for the swing arm 6. The middle part of the swing arm 6 is hinged to the bracket 5 to form a lever structure. One end of the pressure roller 7 contacts the material strip, and the other end is hinged to the screw 8. The screw 8 passes through the bracket 5 and is fitted with a spring 9. When the material strip is conveyed, the elastic force of the spring 9 is transmitted to the swing arm 6 through the screw 8, driving the swing arm 6 to swing around the connection point with the bracket 5, so that the pressure roller 7 is in contact with the surface of the material strip with constant pressure. The buffering characteristics of the spring 9 can automatically adapt to the fluctuation of the material strip thickness or the vibration of the equipment, avoiding rigid compression that could cause the material strip to break. At the same time, the lever action of the swing arm 6 achieves flexible pressure transmission, ensuring stable conveying of the material strip during the die-cutting process.

[0023] like Figure 1 , Figure 2As shown, an adjusting nut 10 is threaded onto the screw 8 and abuts against the spring 9. Specifically, the adjusting nut 10 on the screw 8 abuts against the spring 9. By rotating the adjusting nut 10, the compression of the spring 9 can be changed. The greater the compression, the greater the elastic force of the spring 9, which pushes the rocker arm 6 through the screw 8 to increase the pressure of the pressure roller 7 on the material belt. The smaller the compression, the less the elastic force of the spring 9, and the pressure of the pressure roller 7 decreases accordingly, thus avoiding damage to the material belt due to excessive pressure or slippage due to insufficient pressure.

[0024] like Figure 1 , Figure 2 As shown, a vertical groove 11 is provided on one side of the mounting base 1, and a slide rail 12 that mates with the groove 11 is provided on the bracket 5. A screw nut 13 is provided on the bracket 5, and a screw 14 that is threadedly connected to the screw nut 13 is provided on the mounting base 1. A knob 15 is provided at one end of the screw 14. Specifically, the groove 11 on the side of the mounting base 1 and the slide rail 12 on the bracket 5 form a vertical sliding pair. The bracket 5 is connected to the screw 14 through the screw nut 13. When the knob 15 at one end of the screw 14 is rotated, the rotational motion of the screw 14 is converted into the linear lifting motion of the bracket 5, thereby adjusting the vertical height of the pressure roller 7 and achieving precise control of the height of the pressure roller 7 to adapt to the thickness changes of different material strips.

[0025] like Figure 4 As shown, the side of the mounting base 1 is provided with scale markings 16, and the bracket 5 is provided with indicator arrows 17 corresponding to the scales. Specifically, the scale markings 16 on the side of the mounting base 1 are fixed, while the indicator arrows 17 move synchronously with the lifting and lowering of the bracket 5. The two work together to form a visual scale. By observing the scale markings 16 pointed to by the arrows, the current height of the pressure roller 7 can be accurately obtained, which facilitates the calibration of the height consistency of each pressure roller in the multi-station die-cutting machine, or allows for quick reset based on historical scales when changing materials, reducing manual adjustment errors.

[0026] like Figure 1 As shown, the surface of the pressure roller 7 is covered with a rubber layer 18. Specifically, the rubber layer 18 on the surface of the pressure roller 7 increases the contact friction with the material belt by utilizing the high coefficient of friction, preventing the die-cutting position from shifting due to slippage during the conveying process. At the same time, the elastic deformation capability of the rubber can disperse the local pressure of the pressure roller 7 on the material belt, avoiding hard contact that could cause damage to the thin paper or scratches on the surface.

[0027] Furthermore, the lead screw 14 is a trapezoidal threaded lead screw 14. Specifically, the trapezoidal threaded lead screw 14 has a self-locking characteristic, which can prevent the support 5 from shifting due to equipment vibration or changes in the tension of the material strip during the die-cutting process, and ensure that the height of the pressure roller 7 remains stable during long-term operation.

[0028] like Figure 1 , Figure 2As shown, the swing arm 6 includes a first arm segment 601 and a second arm segment 602. A first rotating shaft 19 is located in the middle of the first arm segment 601. A shaft hole 20 corresponding to the first rotating shaft 19 is provided on the bracket 5. One end of the first arm segment 601 is provided with a first pin 21 rotatably connected to the screw 8, and the other end is hinged to the second arm segment 602 via a second pin 22. A locking nut 23 is threaded onto one end of the second pin 22. A second rotating shaft 24 for mounting the pressure roller 7 is provided on the second arm segment 602. Specifically, the first rotating shaft 19 on the first arm segment 601 cooperates with the shaft hole 20 on the bracket 5 to form the fulcrum for the rotation of the swing arm 6. The screw 8 is driven by the thrust of the spring 9 through the first pin 21. The first arm segment 601 swings around the shaft hole 20. The first arm segment 601 then drives the second arm segment 602 to swing synchronously through the second pin 22, ultimately transmitting force to the pressure roller 7 to press the material strip. After loosening the locking nut 23 on the second pin 22, the second arm segment 602 can rotate around the second pin 22 relative to the first arm segment 601, changing the included angle between the two swing arms 6. After adjusting to the target angle, the locking nut 23 is tightened to fix the relative position of the two swing arms 6, ensuring the stability of the second arm segment 602 during the die-cutting process and avoiding angle deviation due to vibration. The lever arm ratio is adjusted by the included angle between the first arm segment 601 and the second arm segment 602, amplifying or reducing the actual effect of the spring force of the spring 9 on the pressure roller 7.

[0029] In practical use, the mounting base 1 serves as the basic carrier, and the fixing holes 2 on it are used to fix it to the frame of the die-cutting machine by bolts or pins, ensuring that the paper pressure roller is rigidly connected to the equipment. An opening groove 3 extends from one side of the fixing hole 2 to form an "elastic gripper". The structure allows the material on both sides of the groove to contract or expand inward under the action of the locking bolts 4. When it is necessary to adjust the lateral position of the pressure roller, the locking bolts 4 are loosened, and the opening groove 3 releases the clamping force due to elastic deformation, allowing the mounting seat 1 to slide along the frame. After adjustment, the bolts are tightened to shrink the opening groove 3, and the mounting seat 1 is firmly locked onto the frame by friction. The bracket 5 provides a pivot point for the swing arm 6. The middle part of the swing arm 6 is hinged to the bracket 5 to form a lever structure. The pressure roller 7 at one end contacts the material strip, and the other end is hinged to the screw 8. When the material strip is conveyed, the elastic force of the spring 9 is transmitted to the swing arm 6 through the screw 8, driving the swing arm 6 to swing around the connection point with the bracket 5, so that the pressure roller 7 is in contact with the surface of the material strip with constant pressure. The buffering characteristics of the spring 9 can automatically adapt to the fluctuation of the material strip thickness or equipment vibration, avoiding rigid extrusion that could cause the material strip to break. At the same time, the lever action of the swing arm 6 achieves flexible pressure transmission, ensuring stable conveying of the material strip during the die-cutting process.

[0030] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A kiss cut wheel for a die cutting machine, characterized by: Includes a mounting base (1), on which a fixing hole (2) is provided, and an opening groove (3) is provided on one side of the fixing hole (2). A locking bolt (4) passing through the opening groove (3) is threaded onto the mounting base (1). A bracket (5) is provided on one side of the mounting base (1). A swing arm (6) is provided at one end of the bracket (5). The middle part of the swing arm (6) is rotatably connected to the bracket (5). A pressure wheel (7) is rotatably provided at one end of the swing arm (6), and a screw (8) is hinged at the other end. One end of the screw (8) passes through the bracket (5) and is fitted with a spring (9).

2. A kiss cut wheel for a die cutting machine as defined in claim 1, wherein: The screw (8) is threaded with an adjusting nut (10) that abuts against the spring (9).

3. A platen wheel for a die cutting machine as defined in claim 1, wherein: The mounting base (1) has a vertical groove (11) on one side, the bracket (5) has a slide rail (12) that cooperates with the groove (11), the bracket (5) has a screw nut (13), the mounting base (1) has a screw (14) that is threadedly connected to the screw nut (13), and one end of the screw (14) has a knob (15).

4. A kiss cut wheel for a die cutting machine according to claim 3, wherein: The mounting base (1) has a scale mark (16) on its side, and the bracket (5) has an indicator arrow (17) corresponding to the scale.

5. A platen wheel for a die cutting machine as defined in claim 1, wherein: The surface of the pressure roller (7) is covered with a rubber layer (18).

6. A platen wheel for a die cutting machine as defined in claim 1, wherein: The lead screw (14) is a trapezoidal threaded lead screw (14).

7. A kiss cut wheel for a die cutting machine as defined in claim 1, wherein: The swing arm (6) includes a first arm section (601) and a second arm section (602). The first arm section (601) has a first rotating shaft (19) in the middle. The bracket (5) has a shaft hole (20) corresponding to the first rotating shaft (19). One end of the first arm section (601) is provided with a first pin (21) that is rotatably connected to the screw (8). The other end is hinged to the second arm section (602) through a second pin (22). One end of the second pin (22) is threaded with a locking nut (23). The second arm section (602) has a second rotating shaft (24) for installing the pressure roller (7).

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