A high-speed automatic adjustable die-cutting device

Abstract

This utility model relates to the field of die-cutting machine technology, and in particular to a high-speed automatic adjustable die-cutting device, including a worktable with a lower die on the top and two pairs of guide columns fixed on the worktable. A pressure plate with a die-cutting cutter at the bottom is sleeved on the guide columns. By setting a counteracting component, as the speed at which the die-cutting cutter contacts the label and the backing paper increases, the pressure required to press the oil into the valve and into the oil cylinder increases, thereby counteracting more of the pressure component's pressure on the pressure plate. The pressure of the die-cutting cutter on the label and the backing paper decreases synchronously, achieving the effect of automatically reducing the die-cutting pressure as the speed increases. This avoids the die-cutting cutting through or damaging the soft backing paper that has not undergone excessive pressure, which could cause the standard automatic labeling to easily break paper and stop the machine.

Description

Technical Field

[0001] This utility model relates to the field of die-cutting machine technology, and in particular to a high-speed automatic adjustment die-cutting device. Background Technology

[0002] As the carrier of the label face material, the backing paper becomes waste paper after printing and labeling. The existing new backing paper, without excessive pressure, has reduced the basis weight from the current market 40±2 g / m² to 28±2 g / m², reducing pulp waste, saving resources and reducing costs. However, the 28±2 g / m² backing paper has the same thickness as 40 g / m² glassine, which is inevitably soft. At low die-cutting speeds, higher pressure is required for the die-cutting blade to cut through the face material and glue. However, as the speed increases, the backing paper will be cut through (conventional glassine that has undergone excessive pressure does not need to reduce pressure at higher speeds because the glassine has a high density after excessive pressure, and the range of backing paper changes between low and high speeds during die-cutting is very narrow, far lower than that of existing low basis weight backing papers).

[0003] Therefore, a high-speed die-cutting device is needed, in which the die-cutting pressure is related to the speed. As the speed increases, the die pressure automatically decreases, thereby avoiding cutting through or damaging the backing paper, which would cause the standard automatic labeling machine to easily break paper and stop. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as cutting through or damaging the backing paper, by proposing a high-speed automatic adjusting die-cutting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a high-speed automatic adjustable die-cutting device, including a worktable with a lower die on the top and two pairs of guide columns fixed on the worktable. A pressure plate with a die-cutting cutter at the bottom is sleeved on the guide columns. The top of the pressure plate is connected to a lifting plate through a pressure assembly, and the pressure assembly is used to apply downward pressure to the pressure plate.

[0007] The upper end of the lifting plate is connected to a drive assembly for driving the pressure plate to rise and fall.

[0008] The top of the workbench is provided with a counteracting component to counteract the pressure applied to the pressure plate.

[0009] Furthermore, the offsetting assembly includes a hydraulic cylinder fixed to the bottom of the workbench and an oil cylinder with an exhaust port. A piston is slidably installed inside the hydraulic cylinder. A piston rod is fixed to the top of the piston, and the upper end of the piston rod passes through and slidably connects the hydraulic cylinder and the workbench. A valve is installed at the bottom outlet of the hydraulic cylinder, and the valve is connected to the oil cylinder through a pipe.

[0010] Furthermore, an adjusting tube is threadedly connected to the upper end of the piston rod.

[0011] Furthermore, a one-way valve is installed at the bottom outlet of the hydraulic cylinder to introduce oil from the cylinder into the hydraulic cylinder, and the inlet of the one-way valve is connected to the cylinder through a pipe. A piston plate located at the top of the oil is slidably installed inside the cylinder.

[0012] Furthermore, the drive assembly includes a housing fixed to the top of two pairs of guide columns and a guide hole opened at the bottom of the housing. A lifting plate is inserted into the guide hole. A motor is fixedly installed inside the housing, and a cam is fixedly connected to the output shaft of the motor. A cylinder is eccentrically fixed on the right end face of the cam. A horizontally arranged sliding groove with a width equal to that of the cam is opened through the upper side of the lifting plate, and a horizontally sliding cylinder is slidably installed in the sliding groove.

[0013] Furthermore, the pressure assembly includes a pair of guide posts two fixed to the bottom of the lifting plate, and the lower end of the guide post two passes through the pressure plate and is threadedly connected to a nut located below the pressure plate. The outer wall of the guide post two is fitted with a pressure adjusting spring, and the upper and lower ends of the pressure adjusting spring abut against the lifting plate and the pressure plate respectively.

[0014] The high-speed automatic adjustment die-cutting device proposed in this utility model has the following advantages: by setting up a counteracting component, as the speed at which the die-cutting cutter contacts the label and the backing paper increases, the pressure required to press the oil into the valve and into the cylinder increases, thereby counteracting more of the pressure component's pressure on the pressure plate. The pressure of the die-cutting cutter on the label and the backing paper decreases synchronously, achieving the effect that the die-cutting pressure can automatically decrease as the speed increases. This avoids the die-cutting cutting through or damaging the soft backing paper that has not undergone excessive pressure, which would easily cause paper breakage and machine shutdown in standard automatic labeling. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is an enlarged view of area A of this utility model.

[0019] In the diagram: 1. Lower mold; 2. Worktable; 3. Guide column; 4. Die-cutting tool; 5. Pressure plate; 6. Pressure assembly; 61. Guide column II; 62. Nut; 63. Pressure adjusting spring; 7. Lifting plate; 8. Drive assembly; 81. Housing; 82. Guide hole; 83. Motor; 84. Cam; 85. Cylinder; 9. Counteracting assembly; 91. Hydraulic cylinder; 92. Oil cylinder; 93. Piston; 94. Piston rod; 95. Valve; 96. Adjusting pipe; 97. Check valve; 98. Piston plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 As an embodiment of this utility model, a high-speed automatic adjusting die-cutting device is disclosed, including a worktable 2 with a lower die 1 on the top and two pairs of guide columns 3 fixed on the worktable 2. A pressure plate 5 with a die-cutting cutter 4 on the bottom is sleeved on the guide column 3. The top of the pressure plate 5 is connected to a lifting plate 7 through a pressure component 6, and the pressure component 6 is used to apply downward pressure to the pressure plate 5.

[0022] The upper end of the lifting plate 7 is connected to a drive assembly 8 for driving the pressure plate 5 to rise and fall;

[0023] The top of the workbench 2 is provided with a counteracting component 9 to counteract the pressure applied to the pressure plate 5;

[0024] Guide column 3 ensures that pressure plate 5 can only move vertically up and down. Drive component 8 drives lifting plate 7 to move up and down. Lifting plate 7 moves up and down, and pressure component 6 drives pressure plate 5 to descend and separate and cut the label on the bottom paper of lower die 1. At the same time, the pressure of lower die 1 on bottom paper and label is equal to the pushing force of pressure component 6 on pressure plate 5. When the bottom of die-cutting cutter 4 contacts label, the bottom of die-cutting cutter 4 is hindered by the upward pushing force of counteracting component 9. At the same time, the greater the downward speed of die-cutting cutter 4, the greater the upward pushing force of counteracting component 9, thus further counteracting the pushing force of pressure component 6 on pressure plate 5. Ultimately, the pressure of die-cutting cutter 4 on label and bottom paper is reduced, achieving the effect of automatic reduction of die-cutting pressure as speed increases. This avoids die-cutting through or damaging the new soft bottom paper that has not undergone overpressure, which would easily cause paper breakage and machine stoppage in standard automatic labeling.

[0025] Furthermore, the offsetting component 9 includes a hydraulic cylinder 91 fixed to the bottom of the workbench 2 and an oil cylinder 92 with an exhaust port. A piston 93 is slidably installed inside the hydraulic cylinder 91. A piston rod 94 is fixedly installed on the top of the piston 93. The upper end of the piston rod 94 passes through and slidably connects the hydraulic cylinder 91 and the workbench 2. A valve 95 is installed at the bottom outlet of the hydraulic cylinder 91. The valve 95 is connected to the oil cylinder 92 through a pipe.

[0026] When the die-cutting cutter 4 contacts the label, the pressure plate 5 begins to press down the piston rod 94. The piston rod 94 drives the piston 93 to apply pressure to the oil and force the oil into the cylinder 92 through the valve 95. At the same time, the piston 93 is subjected to the counter-force of the oil pressure and transmits the upward counter-force through the piston rod 94 to the pressure plate 5, thus counteracting the downward thrust of the pressure component 6 on the pressure plate 5. When the downward speed of the piston 93 driven by the pressure plate 5 increases, the flow rate of oil being forced into the valve 95 and into the cylinder 92 increases. The pressure required to force more oil into the valve 95 is greater. The piston 93 is subjected to the counter-force of the oil pressure and the upward counter-force increases simultaneously, thereby counteracting more of the downward thrust of the pressure component 6 on the pressure plate 5. With the downward thrust of the pressure component 6 on the pressure plate 5 unchanged, the pressure of the die-cutting cutter 4 on the label and the backing paper decreases simultaneously.

[0027] Furthermore, the upper end of the piston rod 94 is threadedly connected to an adjusting tube 96. By rotating the adjusting tube 96, the overall height of the piston rod 94 and the adjusting tube 96 can be adjusted so that the upper end of the adjusting tube 96 is flush with the top of the label, in order to accommodate labels and backing paper of different thicknesses.

[0028] In some embodiments, a check valve 97 is installed at the bottom outlet of the hydraulic cylinder 91 to introduce oil from the cylinder 92 into the hydraulic cylinder 91, and the inlet of the check valve 97 is connected to the cylinder 92 through a pipe. A piston plate 98 located at the top of the oil is slidably installed inside the cylinder 92.

[0029] When the pressure plate 5 rises and resets after one die-cutting cycle, the piston plate 98, which weighs N times more than the piston 93, presses down the oil under the action of gravity and quickly returns the oil to the hydraulic cylinder 91 through the one-way valve 97, which has an open diameter N times that of the valve 95, and pushes the piston 93 up so that the piston rod 94 resets.

[0030] It should be noted that the drive assembly 8 includes a housing 81 fixed to the top of two pairs of guide columns 3 and a guide hole 82 opened at the bottom of the housing 81. A lifting plate 7 is inserted into the guide hole 82. A motor 83 is fixedly installed inside the housing 81. A cam 84 is fixedly connected to the output shaft of the motor 83. A cylinder 85 is eccentrically fixed on the right end face of the cam 84. A horizontally arranged sliding groove with a width equal to that of the cam 84 is opened through the upper side of the lifting plate 7. The horizontally sliding cylinder 85 is slidably installed in the sliding groove.

[0031] Motor 83 drives cam 84 to rotate, which causes cylinder 85 to slide laterally in the groove, while driving lifting plate 7 to slide up and down repeatedly, thereby driving lifting plate 7 to rise and fall.

[0032] Specifically, the pressure assembly 6 includes a pair of guide posts 61 fixed to the bottom of the lifting plate 7, and the lower end of the guide post 61 passes through the pressure plate 5 and is threadedly connected to a nut 62 located below the pressure plate 5. The outer wall of the guide post 61 is fitted with a pressure adjusting spring 63, and the upper and lower ends of the pressure adjusting spring 63 abut against the lifting plate 7 and the pressure plate 5 respectively.

[0033] The pressure plate 5 is raised or lowered relative to the lifting plate 7 by the nut 62, thereby increasing the distance between the pressure plate 5 and the lifting plate 7 and achieving the effect of adjusting the pressure of the pressure adjusting spring 63 on the pressure plate 5 by changing the compression length of the pressure adjusting spring 63. When the lifting plate 7 descends, pressure is applied to the pressure plate 5 by the compressed pressure adjusting spring 63.

[0034] Working method: During operation, the composite adhesive backing paper and label are first placed horizontally on the lower mold 1. The motor 83 drives the cam 84 to rotate, which in turn drives the lifting plate 7 to rise and fall through the cylinder 85. The lifting plate 7 drives the pressure adjusting spring 63, the pressure plate 5 and the die-cutting cutter 4 to fall. The pressure adjusting spring 63 applies pressure to the pressure plate 5 and the die-cutting cutter 4. The die-cutting cutter 4 under pressure breaks the label, thus completing the cutting and separation of the label. The label waste strip cut by the die-cutting cutter 4 and the backing paper with the die-cut label on the upper surface are separated and wound up by the winding device.

[0035] When the speed of motor 83 increases, the descent speed of pressure plate 5 and die-cutting cutter 4 increases, which in turn increases the flow rate of oil being pumped into valve 95 and into oil cylinder 92. The pressure required to pump the oil into valve 95 faster is greater, and piston 93 is subjected to the counter-push force of oil pressure, which increases the upward counter-push force in sync. This counteracts more of the downward thrust of pressure regulating spring 63 on die-cutting cutter 4, thus reducing the pressure of die-cutting cutter 4 on label and backing paper in sync.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-speed automatic adjustment die-cutting device, comprising a workbench (2) provided with a lower die (1) at the top and two pairs of guide columns (3) fixed on the workbench (2), a pressing plate (5) provided with a die-cutting tool (4) at the bottom is sleeved on the guide columns (3), characterized in that: The top of the pressure plate (5) is connected to a lifting plate (7) via a pressure assembly (6), and the pressure assembly (6) is used to apply downward pressure to the pressure plate (5); The upper end of the lifting plate (7) is connected to a drive assembly (8) for driving the pressure plate (5) to rise and fall. The top of the workbench (2) is provided with a counteracting component (9) for counteracting the pressure applied to the pressure plate (5).

2. The high speed automatic register die cutting apparatus as claimed in claim 1, wherein: The offset assembly (9) includes a hydraulic cylinder (91) fixed to the bottom of the workbench (2) and an oil cylinder (92) with an exhaust port. A piston (93) is slidably installed inside the hydraulic cylinder (91). A piston rod (94) is fixedly installed on the top of the piston (93). The upper end of the piston rod (94) passes through and slidably connects the hydraulic cylinder (91) and the workbench (2). A valve (95) is installed at the bottom outlet of the hydraulic cylinder (91). The valve (95) is connected to the oil cylinder (92) through a pipe.

3. The high speed automatic register die cutting apparatus as claimed in claim 2, wherein: The upper end of the piston rod (94) is threaded with an adjusting tube (96).

4. The high-speed automatic adjusting die-cutting device according to claim 2, characterized in that: The bottom outlet of the hydraulic cylinder (91) is equipped with a one-way valve (97) that introduces oil from the oil cylinder (92) into the hydraulic cylinder (91), and the inlet of the one-way valve (97) is connected to the oil cylinder (92) through a pipe. The piston plate (98) located at the top of the oil is slidably installed inside the oil cylinder (92).

5. The high speed automatic register die cutting apparatus of claim 1 wherein: The drive assembly (8) includes a housing (81) fixed to the top of two pairs of guide columns (3) and a guide hole (82) opened at the bottom of the housing (81). A lifting plate (7) is inserted into the guide hole (82). A motor (83) is fixedly installed inside the housing (81). A cam (84) is fixedly connected to the output shaft of the motor (83). A cylinder (85) is eccentrically fixed on the right end face of the cam (84). A horizontally arranged sliding groove with a width equal to that of the cam (84) is opened through the upper side of the lifting plate (7). A horizontally sliding cylinder (85) is slidably installed in the sliding groove.

6. The high speed automatic register die cutting apparatus of claim 1 wherein: The pressure assembly (6) includes a pair of guide posts (61) fixed to the bottom of the lifting plate (7), and the lower end of the guide post (61) passes through the pressure plate (5) and is threadedly connected to a nut (62) located below the pressure plate (5). The outer wall of the guide post (61) is fitted with a pressure adjusting spring (63), and the upper and lower ends of the pressure adjusting spring (63) abut against the lifting plate (7) and the pressure plate (5) respectively.

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