A monitoring system for preventing knife breakage in flatbed die-cutting machines

Abstract

The present invention discloses a monitoring system for preventing die chipping of a flatbed die-cutting machine, comprising an upper die assembly and a lower die assembly, wherein the lower die assembly comprises a base plate, and a cantilever arm is provided in the middle of the base plate. The system further comprises a detection unit, which is capable of detecting the deformation of the cantilever arm. If the upper die assembly and the lower die assembly are subjected to abnormal stress conditions such as stacking and waste clamping during die-cutting operations, the cantilever arm will undergo significant deformation. The detection unit is capable of detecting the deformation of the cantilever arm, and the die-cutting machine will issue a warning or suspend operation, thereby reducing or preventing die chipping, saving die maintenance costs, and improving product yield.

Description

Technical Field

[0001] The present invention relates to the field of die-cutting technology, in particular to a monitoring system for preventing knife chipping of a flat-bed die-cutting machine. Background Art

[0002] A flatbed die-cutting machine is a device used for die-cutting thin films or small hardware products. A flatbed die-cutting machine is usually equipped with a flat vertical blade cutter. In multi-step continuous die-cutting production, after the first die-cutting mechanism cuts a positioning hole, the subsequent die-cutting mechanism uses the positioning hole to perform a trepanning operation, thereby completing the die-cutting process of the subsequent process. During the trepanning process, the die-cutting mechanism is often prone to cracking the mold edge and causing damage due to waste material, overlapping materials, or hole blockage in the mold assembly. Summary of the Invention

[0003] The purpose of the present invention is to provide a monitoring system for preventing die chipping of a flatbed die-cutting machine. The bottom plate of the lower die assembly is provided with a cantilever arm. The detection part can judge the situation of waste material clamping, material stacking or hole blockage according to the deformation of the cantilever arm, thereby reducing die chipping, extending the service life of the die assembly, and saving the maintenance cost of the die assembly.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A monitoring system for preventing chipping of a flatbed die-cutting machine comprises an upper die assembly and a lower die assembly, wherein the lower die assembly comprises a bottom plate, and a cantilever arm is provided in the middle of the bottom plate;

[0006] The system further includes a detection unit capable of detecting an amount of deformation of the cantilever arm.

[0007] Therefore, if the upper and lower mold assemblies are subjected to abnormal stress conditions such as stacking and pinching during the die-cutting operation, the cantilever arm will undergo significant deformation. The detection unit can detect the deformation of the cantilever arm, and the die-cutting machine will issue a warning or suspend operation, reducing or preventing mold chipping, saving mold maintenance costs, and improving product yield.

[0008] In some embodiments, the lower mold assembly further includes a touch plate, which is capable of amplifying the deformation of the cantilever arm.

[0009] In some embodiments, the touch plate is connected to the suspended end of the cantilever arm, and the touch plate extends out of the bottom plate along the length direction of the cantilever arm.

[0010] Therefore, the touch plate is equivalent to extending the length of the cantilever arm, thereby achieving the effect of amplifying the deformation amount of the cantilever arm, making it easier for the detection part to detect the deformation amount.

[0011] In some embodiments, the detection portion includes a height measuring pen, which is disposed below an end of the touch plate away from the cantilever arm.

[0012] Therefore, the deformation can be designed to be between 10-20um, and the detection accuracy of the height measuring pen can reach about 2um, with high detection accuracy.

[0013] In some embodiments, the height measuring pen is fixed to the frame via a bracket.

[0014] In some embodiments, the touch plate is connected to the cantilever arm via fasteners.

[0015] Therefore, the touch plate is provided with a stepped hole, and the cantilever arm is provided with a screw hole, and is connected by fasteners such as screws.

[0016] In some embodiments, a recessed portion is provided below the middle portion of the bottom plate, and a cantilever arm is formed by cutting a groove in the middle portion of the bottom plate.

[0017] Thus, the recessed portion and the cutout groove form a plurality of cantilever arms in the middle portion of the bottom plate.

[0018] In some embodiments, an opening is provided on a side of the bottom plate opposite to the free end of the cantilever arm.

[0019] The opening thus enables the trigger plate to be connected to the cantilever arm.

[0020] In some embodiments, the lower mold assembly further includes a fixing seat, the fixing seat is provided with a positioning flange, and the bottom plate is provided with a positioning groove.

[0021] Therefore, the bottom plate is assembled on the fixing seat through the cooperation of the positioning groove and the positioning flange, and the fixing seat is assembled on the frame.

[0022] The beneficial effects of the present invention are as follows: the bottom plate of the lower die assembly is provided with a cantilever arm, and the detection unit can judge whether there is waste material trapped, material overlap or hole blockage according to the deformation of the cantilever arm, and prompt the die-cutting machine to issue a warning or suspend operation, thereby reducing die chipping, extending the service life of the die assembly, and saving the maintenance cost of the die assembly;

[0023] In addition, the detection unit can also detect the deformation of the cantilever arm to know whether the die-cutting force is within a reasonable preset range. When the die-cutting force is too large or too small, it can prompt the die-cutting machine to issue a warning or suspend work, thereby improving the die-cutting quality and yield of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A structural diagram of a die-cutting machine for preventing blade breakage in a flatbed die-cutting machine according to the present invention;

[0025] Figure 2 This is a structural diagram of a lower die assembly of a monitoring system for preventing chipping of a flatbed die-cutting machine according to the present invention;

[0026] Figure 3 A cross-sectional view of a lower die assembly of a monitoring system for preventing chipping of a flatbed die-cutting machine according to the present invention;

[0027] Among them: 1 - die-cutting machine; 2 - upper die assembly; 3 - lower die assembly; 31 - fixing seat; 311 - positioning flange; 32 - bottom plate; 321 - cantilever arm; 322 - cutting groove; 323 - recessed part; 324 - opening; 325 - positioning groove; 33 - touch plate; 4 - detection part; 41 - height measuring pen; 42 - bracket; 5 - material pulling mechanism; 6 - frame. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] refer to Figures 1 to 3 A monitoring system for preventing chipping of a flatbed die-cutting machine 1 includes an upper die assembly 2 and a lower die assembly 3. The lower die assembly 3 includes a bottom plate 32. A cantilever arm 321 is provided in the middle of the bottom plate 32.

[0030] The system further includes a detection unit 4 capable of detecting the deformation amount of the cantilever arm 321 .

[0031] Driven by a drive mechanism, the upper die assembly 2 moves toward the lower die assembly 3 and performs die-cutting operations on the material strip. The upper die assembly 2 is equipped with a die cutter, and the lower die assembly 3 is equipped with a template that cooperates with the die cutter. The template is located above the area of the cantilever arm 321 of the base plate 32. When the upper die assembly 2 or the lower die assembly 3 clamps waste material, overlaps materials, or blocks holes, the die-cutting force increases. Due to the increased force on the base plate 32, the cantilever arm 321 will undergo significant abnormal deformation. The detection unit 4 detects the deformation of the cantilever arm 321. When the deformation exceeds a preset range, the die-cutting machine 1 issues a warning or suspends operation, thereby reducing die chipping, extending the service life of the die assembly, and saving die assembly maintenance costs. This solves the problem of die chipping caused by clamping waste material, overlapping materials, or blocking holes.

[0032] The detection unit 4 can also detect the deformation of the cantilever arm 321 to know whether the die-cutting force is within a reasonable preset range. When the die-cutting force is too large or too small, it can prompt the die-cutting machine 1 to issue a warning or suspend work, thereby improving the die-cutting quality and yield of the product.

[0033] The detection unit 4 can convert the detected deformation into an electrical signal, and then the processor analyzes and processes the electrical signal. If the electrical signal exceeds a preset range, a warning is issued or the operation is suspended. The processor is an existing technology and is only applied here.

[0034] To further illustrate, the lower mold assembly 3 further includes a touch plate 33 , which can amplify the deformation of the cantilever arm 321 .

[0035] To further illustrate, the touch plate 33 is connected to the free-standing end of the cantilever arm 321 and extends beyond the base plate 32 along the length of the cantilever arm 321. This extends the length of the cantilever arm 321, increasing the deformation of the touch plate 33 when the cantilever arm 321 deforms. This amplifies the deformation of the cantilever arm 321, facilitating detection of the deformation by the detection unit 4.

[0036] Further, the detection unit 4 includes a height measuring pen 41, which is located below the end of the touch plate 33 away from the cantilever arm 321. The deformation can be designed to be between 10-20 μm, and the detection accuracy of the height measuring pen 41 can reach approximately 2 μm, which is a high detection accuracy.

[0037] To further explain, the height measuring pen 41 is fixed to the frame 6 via a bracket 42 .

[0038] To further illustrate, the touch panel 33 is connected to the cantilever arm 321 via fasteners. The touch panel 33 is provided with a stepped hole, and the cantilever arm 321 is provided with a screw hole, and the connection is achieved via fasteners such as screws.

[0039] To further illustrate, a recessed portion 323 is provided below the middle portion of the bottom plate 32, and a cantilever arm 321 is formed in the middle portion of the bottom plate 32 through a groove 322. The recessed portion 323 and the groove 322 form a plurality of cantilever arms 321 in the middle portion of the bottom plate 32.

[0040] To further explain, an opening 324 is provided on one side of the bottom plate 32 relative to the suspended end of the suspension arm 321 . The opening 324 enables the touch panel 33 to be connected to the suspension arm 321 .

[0041] Further description, the lower mold assembly 3 also includes a fixing base 31, the fixing base 31 is provided with a positioning flange 311, and the bottom plate 32 is provided with a positioning groove 325. The bottom plate 32 is assembled to the fixing base 31 through the positioning groove 325 and the positioning flange 311, and the fixing base 31 is assembled on the frame 6.

[0042] To further explain, the die-cutting machine 1 includes an upper die assembly 2, a lower die assembly 3 and a pulling mechanism 5. The upper die assembly 2 can move relative to the lower die assembly 3, and the upper die assembly 2 and the lower die assembly 3 cooperate to punch and shape the material strip. The pulling mechanism 5 can convey the material strip. The pulling mechanism 5 is composed of an active shaft and a passive shaft, and the active shaft is driven by a motor.

[0043] The above disclosures are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the invention.

Claims

1. A monitoring system for preventing chipping of flatbed die-cutting machines, characterized in that: It comprises an upper mold assembly (2) and a lower mold assembly (3), wherein the lower mold assembly (3) comprises a bottom plate (32), and a cantilever arm (321) is provided in the middle of the bottom plate (32); The system further comprises a detection unit (4), wherein the detection unit (4) is capable of detecting the deformation amount of the cantilever arm (321); The lower mold assembly (3) further includes a touch plate (33), and the touch plate (33) is capable of amplifying the deformation of the cantilever arm (321); The touch plate (33) is connected to the suspended end of the cantilever arm (321), and the touch plate (33) extends out of the bottom plate (32) along the length direction of the cantilever arm (321); The detection part (4) includes a height measuring pen (41), and the height measuring pen (41) is arranged below the end of the touch plate (33) away from the cantilever arm (321); A recessed portion (323) is provided below the middle portion of the bottom plate (32), and the cantilever arm (321) is formed in the middle portion of the bottom plate (32) through a cutout (322).

2. A monitoring system for preventing chipping of a flatbed die-cutting machine according to claim 1, characterized in that: The height measuring pen (41) is fixed to the frame (6) via a bracket (42).

3. A monitoring system for preventing chipping of a flatbed die-cutting machine according to claim 2, characterized in that: The touch plate (33) is connected to the cantilever arm (321) via a fastener.

4. The monitoring system for preventing chipping of a flatbed die-cutting machine according to claim 1, characterized in that: An opening (324) is provided on one side of the bottom plate (32) relative to the suspended end of the cantilever arm (321).

5. The monitoring system for preventing chipping of a flatbed die-cutting machine according to claim 1, characterized in that: The lower mold assembly (3) further comprises a fixing seat (31), the fixing seat (31) is provided with a positioning flange (311), and the bottom plate (32) is provided with a positioning groove (325).

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