Automatic locking device for die cutting machine and its working method

Abstract

The present application discloses an automatic cutting die locking device and a working method thereof, the automatic cutting die locking device includes a cutting die loading and unloading assembly, wherein the cutting die loading and unloading assembly includes: a cutting die mounting plate and a clamping member, which is used to be driven by a die-cutting drive assembly to be installed on the die-cutting machine so as to be moved up and down, wherein at least one first clamping block is provided on the side of the bottom surface of the cutting die mounting plate, and the clamping member includes a second clamping block and a driving unit, wherein the second clamping block is provided on the side of the bottom surface of the cutting die mounting plate opposite to the first clamping block, and the second clamping block is drivably connected to the driving unit so as to be able to move toward or away from the first clamping block, so as to form a clamping space with adjustable width between the second clamping block and the first clamping block, so as to clamp and lock the plate frame with the cutting die located in the clamping space.

Description

Technical Field

[0001] The invention relates to the technical field of die-cutting machines, and in particular to an automatic cutting die locking device with automatic installation and locking functions and a working method thereof. Background Art

[0002] Many packaging boxes are made by folding thin sheets of paper or film into a pre-defined pattern. However, before folding the thin sheets into a box, a predetermined cut line must be formed on the sheet so that the sheet can be folded into the box. At this point, a die-cutting machine is required to die-cut the thin sheets into the pre-defined pattern.

[0003] The working principle of a die-cutting machine is to use a die-cutting knife, a steel knife, a metal mold, or a template carved from a steel plate. The die-cutting knife in the die-cutting machine applies a certain pressure to the die, which presses the sheet below the die to form a certain shape of cut line on the sheet. There are two main types of die-cutting machines: manual die-cutting machine and high-speed die-cutting machine.

[0004] When operating a manual die-cutter, the die is usually secured by a pre-set clamping mechanism. A sheet, marked and loaded onto a mounting plate, is then manually pushed toward the die to be cut. The die is then rolled and cut using the die. The die-cutter assembly and disassembly process for this type of manual die-cutter is complex, requiring the clamping mechanism and mounting plate to be separated.

[0005] In addition, the packaging box formed by the thin slices to be cut is fixed on the thin slices to be cut after die-cutting, so the thin slices to be cut need to be positioned during die-cutting. When positioning the thin slices to be cut, the existing manual die-cutting machine usually uses two equal stops set on both sides of the front end of the thin slice to be cut. The two balance stops are located on two mutually perpendicular straight lines and are fixed to the mounting plate. Since this manual die-cutting machine needs to push the thin slices to be cut during die-cutting, when the thin slices to be cut are pushed, if they are too thick or too thin, they will deviate from the corresponding position due to the weight or elasticity of the product, thereby reducing the yield of die-cutting.

[0006] For high-speed die-cutting machines, the sheet to be cut is moved under the die cutter and then pressed down onto the sheet to be cut. Furthermore, to facilitate assembly and disassembly of the die cutter, the die cutter is manually fixed to a plate frame, which can be manually removed and fixed to switch between a working position where it is attached to the die cutter and a replacement position where it is pulled out from the side of the die cutter.

[0007] While this high-speed die-cutting machine can replace the die, the die cuts the sheet from top to bottom during operation. Therefore, the die is mounted on the bottom surface of the plate frame. Therefore, when the plate frame with the die cutter is pulled from the working position to the replacement position, the plate frame must be flipped 180 degrees so that the die cutter faces upward, making it easier for the operator to load and unload the die. However, the entire loading and unloading process can take up to 30 minutes, even for a skilled operator. Furthermore, loading and unloading the plate frame is very complicated.

[0008] Furthermore, in any die-cutting machine, after the die is stably installed, it is necessary to debug the die to check whether the processing pressure applied to the product at each location is sufficient to cut through the sheet to be cut, ensuring that the die can cut through the product in one go. If the pressure at a certain location on the die is too low, the die must be removed from the die-cutting machine and a thin, lightweight steel plate must be added between the die and the machine to compensate for the local pressure and ensure consistent pressure at each location. However, during this pressure compensation process, the lightweight steel plate may need to be added multiple times, requiring repeated installation and removal of the die, increasing the operator's workload and extending the die installation time. Summary of the Invention

[0009] An advantage of the present invention is that it provides an automatic knife die locking device and a working method thereof, wherein the automatic knife die locking device can automatically load and unload a plate frame with a knife die, thereby effectively improving the loading and unloading efficiency of the knife die.

[0010] Another advantage of the present invention is that it provides an automatic die-cutting locking device and a working method thereof, wherein the automatic die-cutting locking device can position the loaded die-cutting die at a preset position, thereby ensuring that a tangent line is accurately formed on the sheet to be cut when die-cutting the sheet to be cut.

[0011] Another advantage of the present invention is that it provides an automatic cutting die locking device and a working method thereof, wherein the two clamping assemblies clamp the cutting die from both sides of the cutting die, and can clamp the cutting die stably.

[0012] Another advantage of the present invention is that it provides an automatic cutting die locking device and a working method thereof, wherein the positioning assembly can position the cutting die to the predetermined position, so that the cutting die can be quickly placed on the processing table.

[0013] Another advantage of the present invention is that it provides an automatic knife die locking device and a working method thereof, wherein the working method of the automatic knife die device can accurately mark the position where the pressure is insufficient to cut through the thin slice to be cut when the knife die cannot cut through the thin slice to be cut, and the operation is simple.

[0014] To achieve at least one of the above advantages of the present invention, the present invention provides an automatic die-cutting locking device for installation in a die-cutting machine, characterized in that the automatic die-cutting locking device includes a die-cutting assembly, wherein the die-cutting assembly includes:

[0015] A die-cutting mounting plate, which is adapted to be mounted on the die-cutting machine so as to be driven by a die-cutting drive assembly and to be moved up and down, wherein at least one first clamping block is provided on a side portion of a bottom surface of the die-cutting mounting plate;

[0016] A clamping member, comprising a second clamping block and a driving unit, wherein the second clamping block is arranged on the side of the bottom surface of the cutting die mounting plate opposite to the first clamping block, and the second clamping block is drivably connected to the driving unit so as to be able to move toward or away from the first clamping block to form a clamping space with adjustable width between the second clamping block and the first clamping block, for clamping and locking the plate frame with the cutting die located in the clamping space.

[0017] According to an embodiment of the present invention, the die cutting assembly includes a positioning structure, wherein the plate frame can be placed in the clamping space at a preset posture through the positioning structure.

[0018] According to an embodiment of the present invention, the positioning structure is implemented as a positioning groove or a positioning pin.

[0019] According to one embodiment of the present invention, the driving unit includes at least two screw rods and at least one driving member, wherein the two screw rods are arranged in parallel and at intervals on the side of the bottom surface of the die mounting plate, and two threaded holes for threaded connection with the screw rods are formed on the second clamping block respectively, and the two screw rods are synchronously rotatably connected to the driving member so that the screw rods can be driven by the driving member to drive the second clamping block to move toward or away from the first clamping block.

[0020] According to one embodiment of the present invention, the knife die mounting plate defines a first lateral end and a second lateral end on both sides of the extension direction of the first clamping block, and the knife die automatic locking device also includes a transfer assembly and a lifting member, wherein the lifting member is liftably connected to the lifting end of the lifting member, and the transfer assembly includes at least one pair of lifting members, each of the lifting members includes at least one lifting arm, the lifting arm of one of the lifting members is respectively arranged on the side of the first lateral end, and the lifting arm of the other lifting member is arranged on the side of the second lateral end, wherein each of the lifting members includes a clamping drive unit, wherein the lifting arms of each pair of the lifting members form a pair of clamping openings for clamping the plate frame with the knife die, and the lifting arms of each pair of the lifting members are connected to the clamping drive unit in a manner that the size of the clamping openings can be adjusted.

[0021] According to one embodiment of the present invention, the lifting arm of each lifting member is implemented in an L shape, and each clamping drive unit includes a mounting frame, a driving shaft, a swing arm and a driving member. The upper part of the lifting arm of each lifting member is fixedly mounted on the driving shaft, wherein each driving shaft is fixedly mounted on one end of the swing arm, wherein the other end of the swing arm is hinged to the moving end of the driving member, the driving member is fixed to the mounting frame, and the mounting frame is fixed to the lifting end of the lifting member.

[0022] According to an embodiment of the present invention, the axial direction of the driving shaft is parallel to the moving direction of the second clamping block.

[0023] According to another aspect of the present invention, a working method of an automatic die-cutting locking device comprises:

[0024] A clamping space with adjustable width is formed between at least one first clamping block and a second clamping block on a side of the bottom surface of the die cutting mounting plate, wherein the second clamping block is provided on a side of the bottom surface of the die cutting mounting plate opposite to the first clamping block, and the second clamping block is drivably connected to the driving unit;

[0025] The second clamping block is driven by the driving unit to move toward or away from the first clamping block, so as to clamp or release the plate frame with the cutting die in the clamping space.

[0026] According to one embodiment of the present invention, the working method of the automatic die-cutting locking device includes:

[0027] The plate frame with the cutting die is lifted to the clamping space by the transfer assembly.

[0028] According to one embodiment of the present invention, the working method of the automatic die-cutting locking device includes:

[0029] When an uncut line appears on the sheet to be cut after die-cutting, a carrier plate is lifted and placed by the automatic locking device for the die cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective view showing an example of a die-cutting machine according to the present invention is shown.

[0031] Figure 2 A three-dimensional view at one angle of the automatic locking device for cutting die of the present invention installed on the die-cutting machine is shown.

[0032] Figure 3 A three-dimensional diagram from another perspective of the automatic locking device for cutting dies of the present invention installed on a die-cutting machine is shown.

[0033] Figure 4 A three-dimensional diagram showing a partial structure of the automatic die-cutting locking device of the present invention is shown.

[0034] Figure 5 A three-dimensional diagram showing another partial structure of the automatic die-cutting locking device of the present invention is shown.

[0035] Figure 6 A three-dimensional diagram of the knife die and the carrier assembly of the present invention is shown.

[0036] Figure 7 The present invention shows a sectional view of a sheet to be cut and a partial structure of the die-cutting machine installed on the die-cutting machine.

[0037] Figure 8 A flow chart of the method for automatically marking pressure replenishment positions according to the present invention is shown. DETAILED DESCRIPTION

[0038] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0039] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0040] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0041] refer to Figures 1 to 7 The automatic die-cutting locking device according to a preferred embodiment of the present invention will be described in detail below. The automatic die-cutting locking device can be installed in a die-cutting machine and can automatically lock a plate frame 300 with a die-cutting die 200 placed in a predetermined position.

[0042] The die-cutting machine includes a die-cutting machine body 10, a die-cutting drive assembly 20, a carrier assembly 30, and a die-cutting assembly 40. The die-cutting assembly 40 is used to automatically load the die 200, while the carrier assembly 30 is used to carry at least one sheet 400 to be die-cut.

[0043] The die-cutting drive assembly 20 is installed on the die-cutting machine body 10 in a manner that can relatively press and relatively separate the carrier assembly 30 and the knife die assembly and disassembly assembly 40, so that when the die-cutting drive assembly 20 relatively presses the carrier assembly 30 and the knife die assembly and disassembly assembly 40, the thin sheet 400 to be cut installed on the carrier assembly 30 can be die-cut by the knife die 200 on the knife die assembly and disassembly assembly 40, thereby forming a corresponding cutting line on the thin sheet 400 to be cut, and after the die-cutting drive assembly 20 relatively separates the carrier assembly 30 and the knife die assembly and disassembly assembly 40, the carrier assembly 30 and the knife die assembly and disassembly assembly 40 are separated to provide space for a user or a robotic arm to place the thin sheet 400 to be die-cut later on the carrier assembly 30.

[0044] It is worth mentioning that the die-cutting assembly 40 and the carrier assembly 30 are disposed vertically opposite each other. Preferably, the die-cutting assembly 40 is drivably connected to the die-cutting drive assembly 20, so that the die-cutting assembly 40 can be driven by the die-cutting drive assembly 20 to press the sheet 400 to be cut fixed to the carrier assembly 30 from top to bottom.

[0045] Specifically, the die-cutting assembly 40 includes a die-cutting mounting plate 41 and a clamping member 42. At least one first clamping block 411 is disposed on the bottom side of the die-cutting mounting plate 41. The die-cutting mounting plate 41 is mounted on the die-cutting machine body 10. In particular, when the die-cutting assembly 40 is drivably connected to the die-cutting drive assembly 20, the die-cutting mounting plate 41 is connected to the die-cutting drive assembly 20 so as to be movable up and down.

[0046] Those skilled in the art will appreciate that the die-cutting drive assembly 20 is configured as a hydraulic cylinder, an air cylinder, a screw moving structure, etc. Preferably, the die-cutting drive assembly 20 is configured as a hydraulic cylinder.

[0047] The clamping member 42 includes a second clamping block 421 and a driving unit 422, wherein the second clamping block 421 is arranged on the side of the bottom surface of the die mounting plate 41 opposite to the first clamping block 411, and the second clamping block 421 is drivably connected to the driving unit 422 so as to be able to move toward or away from the first clamping block 411 to form a clamping space with adjustable width between the second clamping block 421 and the first clamping block 411.

[0048] It is understandable that when the plate frame 300 with the cutting die 200 needs to be installed in the die-cutting machine, it is only necessary to first drive the second clamping block 421 via the driving unit 422 to move away from the first clamping block 411 so that the width of the clamping space can accommodate the plate frame 300. Then, the plate frame 300 with the cutting die 200 is placed in the clamping space, and then the second clamping block 421 is driven by the driving unit 422 to move toward the first clamping block 411 until the plate frame 300 is clamped. In this way, the plate frame 300 with the cutting die 200 will be fixed to the cutting die installation and removal assembly 40.

[0049] It is understood that when the cutting die 200 needs to be replaced, the plate frame 300 with the required cutting die 200 can be directly placed in the clamping space and then clamped and locked by the cutting die assembly 40. Since the plate frame 300 is very convenient to remove from the die-cutting machine, it can save time and improve the efficiency of replacing the cutting die 200.

[0050] Preferably, the knife die assembly and disassembly assembly 40 includes a positioning structure 43, wherein the plate frame 300 can be placed in the clamping space in a preset posture through the positioning structure 43 to ensure that the plate frame 300 placed in the clamping space can be relatively fixed in a predetermined position on the knife die mounting plate 41.

[0051] In one embodiment, the positioning structure 43 is implemented as a positioning groove or a positioning pin and is provided on the side of the first clamping block 411 facing the clamping space. The plate frame 300 is provided with a corresponding matching structure, such as a positioning pin or a positioning groove, which can cooperate with the positioning structure 43 to enable the plate frame 300 initially placed in the clamping space to be positioned in the predetermined position in a direction perpendicular to the moving direction of the second clamping block 421 before being clamped and locked by the second clamping block 421. In this way, the plate frame 300 with the cutting die 200 clamped and locked to the cutting die mounting plate 41 can always remain in the predetermined position after being locked, thereby enabling the tangent line formed on the thin slice 400 to be cut to be relatively fixed, thereby facilitating the calibration of the tangent line on the thin slice 400 to be cut.

[0052] More specifically, the cutting die mounting plate 41 defines a first lateral end 4101 and a second lateral end 4102 on either side of the extending direction of the first clamping block 411. Both the first clamping block 411 and the second clamping block 421 extend between the first lateral end 4101 and the second lateral end 4102, enabling the first clamping block 411 and the second clamping block 421 to position and adjust the plate frame 300 relative to the inner sidewalls of the clamping space. In other words, because both the first clamping block 411 and the second clamping block 421 extend between the first lateral end 4101 and the second lateral end 4102, the plate frame 300 with the cutting die 200, after being clamped, can be positioned at the predetermined position in the moving direction of the second clamping block 421.

[0053] Because the plate frame 300 with the cutting die 200 is positioned at the predetermined position in a direction perpendicular to the direction of movement of the second clamping block 421 and can also be positioned at the predetermined position in the direction of movement of the second clamping block 421, the position of the cutting die 200, which is ultimately clamped and locked on the cutting die mounting plate 41, can be relatively fixed. Therefore, when subsequently determining the tangent line on the slice 400 to be cut, only the position of the slice 400 to be cut, which is carried on the carrier assembly 30, needs to be considered.

[0054] More specifically, the drive unit 422 includes at least two screw rods 4221 and at least one driving member 4222. The two screw rods 4221 are arranged parallel and spaced apart on the bottom side of the die-cutting mounting plate 41, and the second clamping block 421 is formed with two threaded holes for threaded connection with the screw rods 4221. The two screw rods 4221 are synchronously rotatably connected to the driving member 4222, so that the screw rods 4221 can be driven by the driving member 4222 to move the second clamping block 421 toward or away from the first clamping block 411, thereby clamping the plate frame 300 with the die-cutting die 200 in the clamping space.

[0055] Those skilled in the art will appreciate that, if only one screw rod 4221 is provided, the heavy cutting die 200 may not be clamped, which could result in a safety accident due to the falling of the cutting die 200. Furthermore, if two screw rods 4221 are not provided on the bottom side of the cutting die mounting plate 41, the screw rods 4221 may interfere with the clamping space formed by the first clamping block 421 and the second clamping block 422, thereby failing to clamp and lock the plate frame 300 with the cutting die 200.

[0056] Preferably, the driving member 4222 is configured to include at least one motor 42221 and a gear set 42222. More preferably, the axial direction of the screw rod 4221 is perpendicular to the direction of movement of the second clamping block 421, so that the axial direction of the screw rod 4221 can be parallel to the axial direction of the motor 42221. In addition, the motor 42221 can drive a transmission gear of the gear set 42222 mounted on the output shaft of the motor 42221 and other gears of the gear set 42222 meshing with the transmission gear to rotate, thereby driving the two screw rods 4221 to rotate, so that the second clamping block 421 can move in a direction away from or closer to the first clamping block 411.

[0057] More preferably, the driving unit 422 includes two driving members 4222, wherein each of the lead screws 4221 is drivably connected to the driving member 4222. In one embodiment, the driving member 4222 is configured as a motor.

[0058] Furthermore, the automatic die-cutting locking device further includes a transfer assembly 50. The transfer assembly 50 includes at least a pair of lifting members 51. Each lifting member 51 includes at least one lifting arm 511, wherein the lifting arm 511 of one lifting member 51 is disposed on a side of the first lateral end 4101, and the lifting arm 511 of the other lifting member 51 is disposed on a side of the second lateral end 4102.

[0059] In other words, each pair of the lifting and placing members 51 is disposed on both ends of the die-cutting plate 41 in a direction perpendicular to the moving direction of the second clamping block 421 .

[0060] It is worth mentioning that when the die-cutting assembly 40 is driven by the die-cutting drive assembly 20 to move up and down, the lifting arm 511 does not interfere with the up and down movement of the die-cutting assembly 40 .

[0061] The transfer assembly 50 also includes a lifting member 52, wherein the lifting member 51 is escalably connected to the lifting end of the lifting member 52. Each lifting member 51 includes a clamping drive unit 512, wherein the lifting arms 511 of each pair of lifting members 51 form a pair of clamping openings for clamping the plate frame 300 with the cutting die 200. The lifting arms 511 of each pair of lifting members 51 are connected to the clamping drive unit 512 in a manner such that the size of the clamping openings can be adjusted.

[0062] Therefore, when it is necessary to clamp the plate frame 300 with the cutting die 200, it is only necessary to place the plate frame 300 with the cutting die 200 on the carrier assembly 30, with the cutting die facing the carrier assembly 30, and then drive the lifting member 51 toward the plate frame 300 placed on the carrier assembly 30 through the lifting member 52, and then drive the lifting arms 511 of each pair of the lifting members 51 through the clamping drive unit 512 to reduce the clamping opening, so that the plate frame 300 can be clamped.

[0063] Then, the lifting member 52 is driven to drive the lifting member 51 upward, so that the plate frame 300 with the cutting die 200 is accommodated in the clamping space on the cutting die mounting plate 41. Then, the clamping member 42 is used to clamp and lock the cutting die mounting plate 41 in the clamping space. In this way, the plate frame 300 with the cutting die 200 can be automatically moved from the carrier assembly 30 to the clamping space by the transfer assembly 50, and the plate frame 300 with the cutting die 200 moved into the clamping space is automatically clamped and locked by the cutting die mounting and disassembly assembly 40.

[0064] Furthermore, after the plate frame 300 with the cutting die 200 is clamped and locked, the clamping drive unit 512 can be activated to drive the lifting arms 511 of each pair of the lifting members 51 to enlarge the clamping opening, thereby allowing the plate frame 300 with the cutting die 200 to be released by the lifting arms 511. In this way, when the cutting die mounting assembly 40 is subsequently driven by the die-cutting drive assembly 20 to move up and down, the lifting arms 511 of the lifting members 51 of the transfer assembly 50 will not interfere with the movement of the cutting die mounting plate 41 of the cutting die mounting assembly 40.

[0065] Specifically, in one embodiment, the lifting arm 511 of each lifting member 51 is implemented in an L-shape. Each clamping drive unit 512 includes a mounting frame 5121 , a driving shaft 5122 , a swing arm 5123 and a driving member 5124 .

[0066] The upper portion of the lifting arm 511 of each lifting member 51 is fixedly mounted on the driving shaft 5122, wherein each driving shaft 5122 is fixedly mounted on one end of the swing arm 5123, wherein the other end of the swing arm 5123 is hinged to the movable end of the driving member 5124. The driving member 5124 is fixed to the mounting frame 5121, and the mounting frame 5121 is fixed to the lifting end of the lifting member 52.

[0067] Preferably, the axial direction of the driving shaft 5122 is parallel to the moving direction of the second clamping block 421. Similarly, the driving shaft 5122 is rotatably mounted on the mounting frame 5121, so that the lifting arm 511 fixed to the driving shaft 5122 can more stably lift the plate frame 300 with the cutting die 200.

[0068] Those skilled in the art will appreciate that when the moving end of the driving member 5124 moves in one direction, the swing arm 5123 can be driven to swing, thereby driving the driving shaft 5122 to rotate, thereby enabling the L-shaped lifting arm 511 to rotate to the lower portion of the plate frame 300 with the cutting die 200 on the carrier assembly 30, thereby reducing the clamping opening and allowing the plate frame 300 with the cutting die 200 to be clamped. Subsequently, as the lifting member 52 rises, the lifting arm 511 can lift the plate frame 300 with the cutting die 200 into the clamping space.

[0069] When the moving end of the driving member 5124 moves in another direction, the swing arm 5123 can be driven to swing in the opposite direction, thereby driving the driving shaft 5122 to rotate, so that the L-shaped lifting arm 511 can be rotated away, thereby making room for the lifting and lowering of the die cutting assembly 40.

[0070] Preferably, each of the lifting members 51 includes at least two lifting arms 511, wherein the lifting arms 511 are arranged along the axial direction of the driving shaft 5122. In this way, the plurality of lifting arms 511 can be synchronously driven by the driving shaft 5122 to move, thereby stably lifting the plate frame 300 with the cutting mold 200.

[0071] Those skilled in the art will appreciate that the driving member 5124 may be configured as a moving structure such as a cylinder or a hydraulic cylinder.

[0072] The lifting member 52 can be configured as a telescopic cylinder, such as a pneumatic cylinder, a hydraulic cylinder, etc.

[0073] Those skilled in the art will appreciate that, preferably, the die-cutting assembly and disassembly component 40 can be used to quickly disassemble and assemble the plate frame 300 with the die-cutting die 200. In other words, the die-cutting assembly and disassembly component 40 forms an automatic die-cutting die-locking device. Preferably, the automatic die-cutting die-locking device also includes the transfer member 52 described in any of the above embodiments. In this way, the automatic die-cutting die-locking device can not only automatically lock or release the plate frame 300 with the die-cutting die 200 to achieve rapid disassembly and assembly, but also automatically raise and lower the plate frame 300 with the die-cutting die 200. In this way, the die-cutting die-locking device, which originally took at least 30 minutes to complete, can now be shortened to a few minutes, greatly improving efficiency.

[0074] Preferably, the die-cutting drive assembly 20 includes a drive mechanism 21 , wherein the die-cutting assembly 40 is mounted on the die-cutting machine body 10 so as to be movable up and down via the drive mechanism 21 .

[0075] Preferably, the die-cutting drive assembly 20 further includes a limiting guide mechanism 22, wherein the limiting guide mechanism 22 includes a plurality of limiting posts 221 and at least one limiting plate 222. The axial direction of each limiting post 221 extends in the vertical direction, and the top is connectable to the drive mechanism 21. Preferably, the top of each limiting post 221 is connected to the drive mechanism 21 via a mounting plate 23. The limiting plate 222 is relatively fixed to the die-cutting machine body 10. After each limiting post 221 passes through the limiting plate 222, the bottom is connected to the die-cutting machine body 10, so that when the die-cutting machine body 41 is driven by the drive mechanism 21 to move up and down, the limiting guide mechanism 22 can prevent the die-cutting machine body 10 from shaking relative to the die-cutting machine body 10 during the die-cutting process, thereby ensuring the accuracy of the position of the tangent line formed on the sheet 400 to be cut by the die-cutting.

[0076] Furthermore, the loading assembly 30 includes a loading platform 31, wherein a surface of the loading platform 31 corresponds to the knife die mounting plate 41 in the vertical direction, so that when the plate frame 300 with the knife die 200 is placed on the loading platform 31, the plate frame 300 with the knife die 200 located on the loading platform 31 can be transferred and locked in the clamping space of the knife die mounting plate 41 through the transfer assembly 50 and the knife die loading and unloading assembly 40.

[0077] Preferably, the loading assembly 30 also includes at least one initial positioning member 32, wherein the initial positioning member 32 is arranged on the loading platform 31 to adapt to the positioning mechanism provided on the plate frame 300 with the cutting die 200, thereby limiting the horizontal movement of the plate frame 300 with the cutting die 200 placed on the loading assembly 30, and further enabling the plate frame 300 with the cutting die 200 carried on the loading platform 31 to remain in the corresponding initial position after being placed on the loading platform 31.

[0078] Those skilled in the art will appreciate that, after the plate frame 300 with the cutting die 200 is placed on the loading platform 31, it is fixed in position by means of the initial positioning member 32. Therefore, after the lifting arm 511 of the transfer assembly 50 is moved downward by the clamping drive unit 512, the plate frame 300 with the cutting die 200 initially positioned on the loading platform 31 can be relatively moved into the clamping opening, and can then be clamped by the lifting arms 511 on both sides.

[0079] Preferably, the initial positioning member 32 is configured as a protrusion or a groove extending in the vertical direction, wherein the positioning mechanism on the plate frame 300 with the cutting die 200 is correspondingly configured as a groove or a protrusion.

[0080] More preferably, the initial positioning member 32 is arranged at the edge of the worktable 31, and particularly preferably is arranged at the edge of the worktable 31 in the moving direction of the second clamp 421 to prevent subsequent interference with the up and down movement of the knife die assembly and disassembly assembly 40.

[0081] Preferably, the loading platform 31 of the loading assembly 30 is further provided with a mark for marking the position of the slice 400 to be cut.

[0082] More preferably, the loading platform 31 can also be configured as a lifting platform to facilitate adjustment of the height of the top surface of the loading platform 31 .

[0083] Furthermore, the die-cutting machine also includes a compensating marking plate 60 and a carrier plate 70. The carrier plate 70 and the compensating marking plate 60 are removably fixed to the top of the carrier table 31 in a vertically relative manner. The carrier plate 70 is used to support the plate frame 300 with the cutting die 200 that needs to be replaced, as well as the plate frame 300 with the cutting die 200 that has been removed from the cutting die mounting plate 41. Furthermore, the carrier plate 70 can also be used to support the sheet 400 to be die-cut.

[0084] When the die-cutting drive assembly 20 drives the die-cutting die 200 mounted on the die-cutting die mounting plate 41 to die-cut the thin sheet 400 to be cut, and a cut line that is not cut through appears on the thin sheet 400 to be cut, a pressure supplement member, such as a sponge or a cardboard block, can be placed between the carrier plate 70 and the pressure supplement mark plate 60 to partially raise the top surface formed by the carrier plate 70 for supporting the thin sheet 400 to be cut, thereby correspondingly supplementing the pressure for die-cutting the thin sheet 400 to be cut.

[0085] It is worth mentioning that when the die-cutting drive assembly 20 drives the die-cutting die 200 installed on the die-cutting die mounting plate 41 to die-cut the thin sheet 400 to be cut, and an uncut line appears on the thin sheet 400 to be cut, the die-cutting machine of the present invention can also automatically mark the position where additional pressure is required.

[0086] like Figure 8 According to another aspect of the present invention, the present invention further provides a method for automatically marking a pressure replenishing position, wherein the method for automatically marking a pressure replenishing position comprises:

[0087] S110, driving the cutting die 200 mounted on the cutting die assembly 40 by the cutting drive assembly 20 to die-cut the sheet 400 fixed on the carrier plate 70;

[0088] S120, when an uncut line appears on the sheet to be cut 400 after die-cutting, the upper and lower positions of the carrier plate 70 and the compensating pressure marking plate 60;

[0089] S130, the die-cutting drive assembly 20 drives the die-cutting die 200 installed on the die-cutting die assembly 40 to die-cut the thin sheet 400 to be cut fixed on the compensating marking plate 60, and marks the position of the uncut line on the thin sheet 400 to be cut on the compensating marking plate 60 corresponding to the die-cutting.

[0090] Preferably, the width of the carrier plate 70 in a direction perpendicular to the direction of movement of the second clamping block 421 is consistent with the width of the plate frame 300 carrying the cutting die 200 in the direction perpendicular to the direction of movement of the second clamping block 421. In this way, the carrier plate 70 can be lifted and lowered in a manner similar to that of the plate frame 300 carrying the cutting die 200, thereby quickly marking the location of the uncut tangent line on the slice 400 to be cut.

[0091] Specifically, step S120 includes:

[0092] S121, lift the carrier plate 70 by the transfer assembly 50, take out the pressure compensation mark plate 60, and then place the carrier plate 70 on the top of the stage 31 by the transfer assembly 50;

[0093] S122 , placing the pressure-compensating mark plate 60 above the loading plate 70 , and fixing the loading plate 70 and the pressure-compensating mark plate 60 relatively on the top of the loading platform 31 .

[0094] Those skilled in the art will appreciate that, after completing the position marking of the uncut tangent line on the slice 400 to be cut, the carrier plate 70 can be lifted and lowered by the transfer assembly 50 and the pressure-compensating marking plate 60 with added pressure can be placed under the carrier plate 70 again.

[0095] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. Automatic locking device for cutting die, used for installation on a die cutting machine, characterized in that: The automatic knife die locking device includes a knife die assembly and disassembly assembly, wherein the knife die assembly and disassembly assembly includes: A die-cutting mounting plate, which is adapted to be mounted on the die-cutting machine so as to be driven by a die-cutting drive assembly and to be moved up and down, wherein at least one first clamping block is provided on a side portion of a bottom surface of the die-cutting mounting plate; a clamping member comprising a second clamping block and a driving unit, wherein the second clamping block is disposed on a side of the bottom surface of the cutting die mounting plate opposite to the first clamping block, and the second clamping block is drivably connected to the driving unit so as to be movable toward or away from the first clamping block, thereby forming a clamping space with adjustable width between the second clamping block and the first clamping block, for clamping and locking the plate frame with the cutting die in the clamping space; The knife die mounting plate defines a first lateral end portion and a second lateral end portion on both sides of the first clamping block in the extension direction, the knife die automatic locking device further comprises a transfer assembly and a lifting member, the transfer assembly comprises at least a pair of lifting members, wherein the lifting members are liftably connected to the lifting ends of the lifting members, each of the lifting members comprises at least one lifting arm, the lifting arms of one of the lifting members are respectively arranged on the side of the first lateral end portion, wherein the lifting arm of the other lifting member is arranged on the side of the second lateral end portion, wherein each of the lifting members comprises a clamping drive unit, wherein the lifting arms of each pair of the lifting members form a pair of clamping openings for clamping the plate frame with the knife die, and the lifting arms of each pair of the lifting members are connected to the clamping drive unit in a manner in which the size of the clamping openings is adjustable; The lifting arm of each lifting member is implemented in an L shape, and each clamping drive unit includes a mounting frame, a driving shaft, a swing arm and a driving member. The upper part of the lifting arm of each lifting member is fixedly mounted on the driving shaft, wherein each driving shaft is fixedly mounted on one end of the swing arm, wherein the other end of the swing arm is hinged to the moving end of the driving member, the driving member is fixed to the mounting frame, and the mounting frame is fixed to the lifting end of the lifting member.

2. The automatic die-cutting locking device according to claim 1, characterized in that: The die cutting assembly includes a positioning structure, wherein the plate frame can be placed in the clamping space at a preset posture through the positioning structure.

3. The automatic die-cutting locking device according to claim 2, characterized in that: The positioning structure is implemented as a positioning groove or a positioning pin.

4. The automatic die-cutting locking device according to any one of claims 1 to 3, characterized in that: The driving unit includes at least two screw rods and at least one driving member, wherein the two screw rods are arranged in parallel and at intervals on the side of the bottom surface of the die mounting plate, and two threaded holes for threaded connection with the screw rods are formed on the second clamping block respectively, and the two screw rods are synchronously rotatably connected to the driving member so that the screw rods can be driven by the driving member to drive the second clamping block to move toward or away from the first clamping block.

5. The automatic die-cutting locking device according to claim 1, characterized in that: The axial direction of the driving shaft is parallel to the moving direction of the second clamping block.

6. A method for operating a die-cutting automatic locking device, using the die-cutting automatic locking device according to any one of claims 1 to 5, characterized in that: The working method of the automatic cutting die locking device includes: A clamping space with adjustable width is formed between at least one first clamping block and a second clamping block on a side of the bottom surface of the die cutting mounting plate, wherein the second clamping block is provided on a side of the bottom surface of the die cutting mounting plate opposite to the first clamping block, and the second clamping block is drivably connected to the driving unit; The second clamping block is driven by the driving unit to move toward or away from the first clamping block, so as to clamp or release the plate frame with the cutting die in the clamping space.

7. The working method of the automatic die-cutting locking device according to claim 6, characterized in that: The working method of the automatic cutting die locking device includes: The plate frame with the cutting die is lifted to the clamping space by the transfer assembly.

8. The working method of the automatic die-cutting locking device according to claim 6, characterized in that: The working method of the automatic cutting die locking device includes: When an uncut cutting line appears on the sheet to be cut after die-cutting, a carrier plate is lifted and placed by the automatic locking device for the knife die.

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