Air pressure control mechanism for foil releasing pinch roller

Abstract

The utility model belongs to the field of die-cutting machines, and particularly relates to an air pressure control mechanism for a foil releasing pinch roller, which is used for driving the foil releasing pinch roller to open and close, the foil releasing pinch roller is mounted on a rotating beam, the rotating beam is rotatably mounted on a rack, the control mechanism comprises a swing arm and an air cylinder, one end of the swing arm is fixedly connected with the rotating beam, and the other end of the swing arm is fixedly connected with the air cylinder. The overhanging end of the swing arm is connected with the telescopic end of the air cylinder through a first hinge shaft, the installation end of the air cylinder is connected with the machine frame through a second hinge shaft, the first hinge shaft and the second hinge shaft are arranged in parallel with the roller shaft, the control mechanism achieves opening and closing of the foil releasing pressing wheel through stretching and retracting of the air cylinder, automatic control over the foil releasing pressing wheel is achieved, and therefore the foil releasing pressing wheel can be automatically controlled. Time and labor are saved, and the overall production efficiency of the die-cutting machine can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of die-cutting machines, and specifically relates to a foil feeding pressure roller air pressure control mechanism. Background Technology

[0002] As a key piece of equipment in the packaging and printing industry, the performance of the foil feeding rollers in die-cutting machines directly affects the precision and efficiency of processes such as hot stamping and embossing. The foil feeding rollers provide pressure to the foil on the roller shaft, ensuring its smooth transport. Traditionally, foil feeding rollers employ manual control mechanisms, such as gears or screws, located on the outside of the frame. These mechanisms allow for manual adjustment of the rotating beam, thus controlling the opening and closing of the foil feeding rollers relative to the roller shaft. However, manual adjustment is slow, inaccurate in positioning, time-consuming, and labor-intensive, often resulting in prolonged downtime or production interruptions. Furthermore, manual adjustment is difficult to integrate with other automated equipment within the die-cutting machine, hindering its integration into the automated process and limiting overall production efficiency. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a foil-feeding pressure roller pneumatic control mechanism. By using the extension and retraction of a cylinder to drive the foil-feeding pressure roller to open and close, the mechanism achieves automated control of the foil-feeding pressure roller, saving time and effort and helping to improve the overall production efficiency of the die-cutting machine.

[0004] The specific technical solution adopted in this utility model is as follows:

[0005] A pneumatic control mechanism for a foil-feeding roller is disclosed, used to drive the opening and closing of the foil-feeding roller. The foil-feeding roller is mounted on a rotating beam, which is rotatably mounted on a frame. The control mechanism includes a swing arm and a cylinder. One end of the swing arm is fixedly connected to the rotating beam. The cantilever end of the swing arm is connected to the telescopic end of the cylinder via a first hinge shaft. The mounting end of the cylinder is connected to the frame via a second hinge shaft. The first and second hinge shafts are arranged parallel to the roller shaft.

[0006] The cylinder is positioned between two adjacent rollers and installed below the rotating beam.

[0007] The swing arm includes a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​part and the second snap-fit ​​part are matched to form a snap ring that clamps the end of the rotating beam. The end of the first snap-fit ​​part is provided with a first connecting plate, and the end of the second snap-fit ​​part is provided with a second connecting plate. The first connecting plate and the second connecting plate are coaxially provided with a set of connecting holes. The first connecting plate and the second connecting plate are fixedly connected by fasteners passing through the connecting holes.

[0008] The end of the rotating beam is a round shaft, and the round shaft is provided with a slot. The first or second locking part is provided with a pin that matches the slot.

[0009] The left side of the first snap-fit ​​portion is flush with the left side of the first connecting plate, the right side of the first connecting plate is recessed inward from the right side of the first snap-fit ​​portion, the right side of the second snap-fit ​​portion is flush with the right side of the second connecting plate, the left side of the second connecting plate is recessed inward from the left side of the second snap-fit ​​portion, the left and right sides of the first snap-fit ​​portion are flush with the left and right sides of the second snap-fit ​​portion, and the right side of the first connecting plate is fitted against the left side of the second connecting plate.

[0010] The foil-feeding pressure roller includes a fixed base, a mounting plate, and a wheel body. The fixed base is fixedly connected to a rotating beam. The wheel body is rotatably mounted on the front side of the mounting plate. The rear side of the mounting plate is hinged to the fixed base. A fine-tuning component for the wheel body pressure is also provided between the fixed base and the mounting plate.

[0011] The fine-tuning component includes an adjusting bolt and a spring. A push block is provided on the mounting plate. The screw of the adjusting bolt is threadedly connected to the fixed seat and has the freedom to move back and forth on the fixed seat. The head of the adjusting bolt and the push block are respectively provided with protrusions. The two ends of the spring are respectively fitted with the protrusions and are attached to the push block and the adjusting bolt. The mounting plate swings along the fixed seat by means of the pushing force of the adjusting bolt on the spring.

[0012] The head of the adjusting bolt is provided with a plug hole, which is perpendicular to the axis of the adjusting bolt. The plug hole is inserted into the drive rod, and the drive rod is turned to drive the adjusting bolt to rotate and extend on the fixed seat.

[0013] The beneficial effects of this utility model are:

[0014] This utility model adds a control mechanism to the frame. By extending and retracting the cylinder in the control mechanism, the swing arm carrying the rotating beam can rotate forward or backward on the frame, thereby realizing the automatic control of the opening and closing of the foil pressing roller. The cylinder has a fast response speed and precise position, saving time and effort and improving the overall production efficiency of the die-cutting machine.

[0015] The swing arm has a split structure, including a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​part and the second snap-fit ​​part are matched to form a snap ring at the end of the rotating beam, and are fixed together by means of a first connecting plate and a second connecting plate. The swing arm has a simple structure and is easy to install.

[0016] When the first and second locking parts form a retaining ring, there are no gaps between the first and second connecting plates, the first and second locking parts, and the second locking parts, which improves the overall strength of the swing arm. On the other hand, the first locking part and the second connecting plate, and the second locking part and the first connecting plate respectively form mutual limiting, preventing relative rotation between the first and second locking parts. This helps to reduce the number of connecting holes. Only one connecting hole is set coaxially on the first and second connecting plates. By inserting a pin into the connecting hole, the first and second locking parts can be fixed, further simplifying the installation steps of the swing arm. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0019] Figure 3 This is a schematic diagram of the assembly of the rocker arm and the cylinder;

[0020] Figure 4 This is a schematic diagram of the structure of the first snap-fit ​​part;

[0021] Figure 5 This is a schematic diagram of the structure of the second snap-fit ​​part;

[0022] In the attached diagram, 1 is the roller, 2 is the rotating beam, 3 is the frame, 4 is the swing arm, 5 is the cylinder, 6 is the first hinge shaft, 7 is the second hinge shaft, 8 is the first snap-fit ​​part, 801 is the first end face, 9 is the second snap-fit ​​part, 901 is the second end face, 10 is the first connecting plate, 11 is the second connecting plate, 12 is the pin, 13 is the fixed seat, 14 is the mounting plate, 15 is the wheel body, 16 is the adjusting bolt, 17 is the spring, 18 is the push block, 19 is the protrusion, and 20 is the insertion hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] Specific implementation examples Figure 1As shown, this utility model relates to a pneumatic control mechanism for a foil-feeding roller, used to drive the opening and closing of the foil-feeding roller and roller shaft 1. The foil-feeding roller is mounted on a rotating beam 2, which is rotatably mounted on a frame 3. The control mechanism includes a swing arm 4 and a cylinder 5. One end of the swing arm 4 is fixedly connected to the rotating beam 2. The cantilever end of the swing arm 4 is connected to the telescopic end of the cylinder 5 via a first hinge shaft 6. The mounting end of the cylinder 5 is connected to the frame 3 via a second hinge shaft 7. The first hinge shaft 6 and the second hinge shaft 7 are arranged parallel to the roller shaft. The extension and retraction of the cylinder 5, through the push and pull of the swing arm 4 by the telescopic end of the cylinder 5, realizes the forward or reverse rotation of the rotating beam 2. When the rotating beam 2 rotates forward, the foil-feeding roller swings towards the roller shaft 1, forming a closed loop between the foil-feeding roller and roller shaft 1. When the rotating beam 2 rotates in reverse, the foil-feeding roller swings upward from the roller shaft 1, thus moving away from the roller shaft 1.

[0025] By adding a control mechanism, the extension and retraction of the cylinder 5 in the control mechanism can make the swing arm 4 carry the rotating beam 2 to rotate on the frame 3, thereby realizing the automated control of the opening and closing of the foil pressing roller. The cylinder 5 has a fast response speed and precise position, saving time and effort and improving the overall production efficiency of the die-cutting machine.

[0026] Preferably, the cylinder 5 is located between two adjacent rollers 1 and installed below the rotating beam 2. The cylinder 5 is installed using the space between the rollers 1, making full use of the space inside the frame 3. This eliminates the need to increase the internal space of the frame 3 and does not occupy the external space of the frame 3. The layout is reasonable and the structure is compact.

[0027] Preferably, the swing arm 4 includes a first locking part 8 and a second locking part 9. The first locking part 8 and the second locking part 9 are matched to form a retaining ring that clamps the end of the rotating beam 2. A first connecting plate 10 is provided at the end of the first locking part 8, and a second connecting plate 11 is provided at the end of the second locking part 9. A set of connecting holes are coaxially provided on the first connecting plate 10 and the second connecting plate 11. The first connecting plate 10 and the second connecting plate 11 are fixed together by fasteners passing through the connecting holes. The fasteners are pins or nuts and screws. In this embodiment, the fasteners are preferably pins. The pins pass through the connecting holes to fix the first connecting plate 10 and the second connecting plate 11. The pins and the connecting holes are interference fits, so that the first locking part 8 and the second locking part 9 clamp the end of the rotating beam 2 and form a fixed connection with the rotating beam 2.

[0028] The end of the rotating beam 2 is a round shaft with a slot. The round shaft and the frame 3 are rotatably fitted. The swing arm 4 is mounted on the round shaft and positioned close to the frame 3, which reduces the overhang length of the cylinder 5 mounting structure and makes the installation of the cylinder 5 and swing arm 4 inside the frame 3 more compact, reducing interference with the internal space of the frame 3. The first snap-fit ​​part 8 or the second snap-fit ​​part 9 is provided with a pin 12 that matches the slot. In this embodiment, the first snap-fit ​​part 8 is preferably provided with a pin 12 that matches the slot. When installing the swing arm 4, the first snap-fit ​​part 8 and the second snap-fit ​​part 9 are respectively fitted onto the end of the rotating beam 2. The pin 12 on the first snap-fit ​​part 8 is inserted into the slot on the rotating beam 2. The diameter of the pin 12 and the slot are the same. The second snap-fit ​​part 9 is translated to align with the first snap-fit ​​part 8 to form a circular retaining ring. The fasteners are then installed on the first connecting plate 10 and the second connecting plate 11 to complete the installation of the swing arm 4.

[0029] The cross-section of the shaft is circular, and the inner walls of the first snap-fit ​​part 8 and the second snap-fit ​​part 9 are arc-shaped, which facilitates manufacturing and processing, and allows them to fit tightly with the shaft, increasing friction. The swing arm 4 has a simple structure and is easy and quick to install. When the swing arm 4 swings, it can drive the rotating beam 2 to rotate on the frame 3 by means of the cooperation between the pin 12 and the slot.

[0030] If the swing arm 4 is installed on a non-circular rotating beam 2 with a rectangular or oblong cross-section, there is no need to set the pin 12 and the slot. However, the inner wall structure of the first locking part 8 and the second locking part 9 is complex, which is not conducive to processing and production.

[0031] Furthermore, one end of the first hinge shaft 6 is fixedly connected to the end of the pin shaft, and the other end of the first hinge shaft 6 is rotatably connected to the telescopic end of the cylinder 5, thereby realizing the hinge connection between the swing arm 4 and the cylinder 5.

[0032] Preferably, the left side of the first latching portion 8 is flush with the left side of the first connecting plate 10, and the right side of the first connecting plate 10 is recessed inward from the right side of the first latching portion 8. The right side of the second latching portion 9 is flush with the right side of the second connecting plate 11, and the left side of the second connecting plate 11 is recessed inward from the left side of the second latching portion 9. The left and right sides of the first latching portion 8 are flush with the left and right sides of the second latching portion 9, and the right side of the first connecting plate 10 is fitted against the left side of the second connecting plate 11. When the first latching portion 8 and the second latching portion 9 form a retaining ring, the first connecting plate 10 and the second connecting plate 11 form a connecting plate that is flush with the left and right sides of the retaining ring, making the appearance of the swing arm 4 neat.

[0033] Furthermore, such as Figures 3-5The first snap-fit ​​part 8 has a first end face 801 at its end, and the front side of the second connecting plate 11 is fitted with the first end face 801. The second snap-fit ​​part 9 has a second end face 901 at its end, and the front side of the first connecting plate 10 is fitted with the second end face 901. When the first snap-fit ​​part 8 and the second snap-fit ​​part 9 form a snap ring, there are no gaps between the first connecting plate 10, the second connecting plate 11, the first snap-fit ​​part 8, and the second snap-fit ​​part 9, which improves the overall strength of the swing arm 4. On the other hand, the first end face 801 and the second connecting plate 11, and the second end face 901 and the first connecting plate 10 respectively form mutual limiting, preventing the first snap-fit ​​part 8 and the second snap-fit ​​part 9 from rotating relative to each other. This helps to reduce the number of connecting holes. Only one connecting hole is provided coaxially on the first connecting plate 10 and the second connecting plate 11. By inserting a pin into the connecting hole, the first snap-fit ​​part 8 and the second snap-fit ​​part 9 can be fixed.

[0034] like Figure 1 , Figure 2 As shown, the foil-feeding pressure roller includes a fixed base 13, a mounting plate 14, and a wheel body 15. The fixed base 13 is fixedly connected to the rotating beam 2. The wheel body 15 is rotatably mounted on the front side of the mounting plate 14. The rear side of the mounting plate 14 is hinged to the fixed base 13. A fine-tuning component for the pressure of the wheel body 15 is also provided between the fixed base 13 and the mounting plate 14. The pressure of the foil-feeding pressure roller is finely adjusted by the fine-tuning component.

[0035] The fine-tuning assembly includes an adjusting bolt 16 and a spring 17. A push block 18 is provided on the mounting plate 14. The screw of the adjusting bolt 16 is threadedly connected to the fixed seat 13 and has the freedom to move back and forth on the fixed seat 13. The head of the adjusting bolt 16 and the push block 18 are respectively provided with protrusions 19. The two ends of the spring 17 are respectively fitted with the protrusions 19 and are attached to the push block 18 and the adjusting bolt 16. The mounting plate 14 swings along the fixed seat 13 by means of the pushing force of the adjusting bolt 16 on the spring 17. When conveying different types of foil and it is necessary to adjust the pressure of the foil feeding roller, the adjusting bolt 16 is rotated to move the head of the adjusting bolt 16 back and forth on the fixed seat 13. The head of the adjusting bolt 16 provides a force to the spring 17, and the spring 17 transmits the force to the push block 18, causing the push block 18 to drive the mounting plate 14 and the wheel body 15 to press down or move up, thereby realizing the fine adjustment of the pressure of the foil feeding roller to meet the conveying of different foil materials. Spring 17 can also absorb the vibration during the operation of the die-cutting machine, preventing the foil-feeding roller from making indentations on the foil when vibration occurs, which helps to improve the processing quality of the foil.

[0036] Preferably, the head of the adjusting bolt 16 is provided with a insertion hole 20, which is perpendicular to the axis of the adjusting bolt 16. When adjusting the pressure of the foil-feeding roller, the drive rod is inserted into the insertion hole 20, and the adjusting bolt 16 can be rotated by turning the drive rod, thereby realizing the extension and retraction of the head of the adjusting bolt 16 on the fixed seat 13.

Claims

1. A mechanism for controlling the air pressure of a foil dispenser roller, for driving the opening and closing of the foil dispenser roller, said foil dispenser roller being mounted on a rotating beam (2), said rotating beam (2) being rotatably mounted on a frame (3), characterized in that: The control mechanism comprises a swing arm (4) and a cylinder (5), one end of the swing arm (4) is fixedly connected with the rotating beam (2), the overhanging end of the swing arm (4) is connected with the telescopic end of the cylinder (5) through a first hinge shaft (6), the mounting end of the cylinder (5) is connected with the rack (3) through a second hinge shaft (7), and the first hinge shaft (6) and the second hinge shaft (7) are arranged in parallel with the roller shaft.

2. A foil dispensing pressure wheel control mechanism according to claim 1, wherein: The cylinder (5) is arranged between the adjacent two roller shafts (1) and is mounted below the rotating beam (2).

3. The foil dispensing pressure wheel control mechanism of claim 1, wherein: The swing arm (4) comprises a first clamping part (8) and a second clamping part (9), the first clamping part (8) and the second clamping part (9) are matched to form a clamping ring on the end of the rotating beam (2), the end of the first clamping part (8) is provided with a first connecting plate (10), the end of the second clamping part (9) is provided with a second connecting plate (11), a group of connecting holes are coaxially arranged on the first connecting plate (10) and the second connecting plate (11), and the first connecting plate (10) and the second connecting plate (11) are fixedly connected through fasteners penetrating the connecting holes.

4. A foil dispensing pressure wheel control mechanism according to claim 3, wherein: The left side of the first clamping part (8) is flush with the left side of the first connecting plate (10), the right side of the first connecting plate (10) is recessed inward from the right side of the first clamping part (8), the right side of the second clamping part (9) is flush with the right side of the second connecting plate (11), the left side of the second connecting plate (11) is recessed inward from the left side of the second clamping part (9), the left and right sides of the first clamping part (8) are flush with the left and right sides of the second clamping part (9), and the right side of the first connecting plate (10) is flush with the left side of the second connecting plate (11).

5. The foil dispensing pressure wheel control mechanism of claim 3, wherein: The end of the rotating beam (2) is a circular shaft, the circular shaft is provided with a clamping groove, and the first clamping part (8) or the second clamping part (9) is provided with a bolt (12) matched with the clamping groove.

6. The foil dispensing pressure wheel control mechanism of claim 1, wherein: The foil pressing wheel comprises a fixed seat (13), a mounting plate (14) and a wheel body (15), the fixed seat (13) is fixedly connected with the rotating beam (2), the wheel body (15) is rotatably mounted on the front side of the mounting plate (14), the rear side of the mounting plate (14) is hinged with the fixed seat (13), and a fine adjustment assembly of the wheel body (15) pressure is further arranged between the fixed seat (13) and the mounting plate (14).

7. A foil dispensing pressure wheel control mechanism according to claim 6, wherein: The fine adjustment assembly comprises an adjusting bolt (16) and a spring (17), the mounting plate (14) is provided with a push block (18), the screw rod of the adjusting bolt (16) is threadedly connected with the fixed seat (13) and has the freedom of moving forward and backward on the fixed seat (13), the head of the adjusting bolt (16) and the push block (18) are respectively provided with protrusions (19), the two ends of the spring (17) are respectively sleeved with the protrusions (19) and are flush with the push block (18) and the adjusting bolt (16), and the mounting plate (14) swings along the fixed seat (13) by the pushing force of the spring (17) through the adjusting bolt (16).

8. A foil dispensing pressure wheel control mechanism according to claim 7, wherein: The head of the adjusting bolt (16) is provided with a plug hole (20) which is perpendicular to the axis of the adjusting bolt (16) and is plugged with the driving rod.

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