A limiting device for a die-cutting apparatus and a die-cutting apparatus

Abstract

The utility model relates to a limiting device and die cutting equipment for die cutting equipment, including fastener and limit block, fastener extends fixed mounting in the side frame of die cutting equipment along the horizontal direction, and relative to spring device of die cutting equipment setting, fastener outer surface is provided with outer thread, limit block is set in fastener outside, and limit block is connected with fastener thread, wherein, rotate fastener, drive limit block at least partial extension die cutting equipment's upper die roller device and the slide between die cutting equipment's lower die roller device, to limit die cutting equipment's upper die roller device and the activity between die cutting equipment's lower die roller device. The above technical scheme limit effectively blocked because of external vibration or impact and led to the upper die roller device excessive downward movement or the lower die roller device excessive upward movement, prevented the rigid collision, avoided the precise roller surface scratch, indentation and the damage caused by accidental impact to bearing.

Description

Technical Field

[0001] This utility model relates to the field of flexible material cutting technology, and in particular to a limiting device for die-cutting equipment and a die-cutting equipment. Background Technology

[0002] In die-cutting of flexible materials such as non-woven fabrics, a die frame structure with buffer springs is often used. The upper and lower die roller assemblies are connected by a spring device to accommodate materials of different thicknesses and protect the equipment. However, during transportation, handling, or storage, when subjected to external vibration or impact, the spring device may be over-compressed or over-stretched, causing the upper and lower die roller assemblies to collide with each other, resulting in damage to the precision roller surfaces or bearings. Utility Model Content

[0003] Therefore, there is a need to provide a limiting device and a die-cutting device for die-cutting equipment, in order to solve the technical problem that when a die frame with a spring device is subjected to external vibration or impact during transportation, handling or storage, the upper and lower die roller devices are prone to collide with each other, causing damage to the precision roller surface or bearing.

[0004] To achieve the above objectives, in a first aspect, this utility model provides a limiting device for a die-cutting equipment, comprising:

[0005] Fasteners are horizontally extended and fixedly installed inside the side frame of the die-cutting equipment and are positioned relative to the spring device of the die-cutting equipment. The outer surface of the fasteners is provided with external threads.

[0006] The limiting block is located inside the side frame of the die-cutting equipment and is sleeved on the outside of the fastener. The limiting block has an internal thread, which is threadedly connected to the external thread.

[0007] The rotating fastener drives the limiting block to extend at least partially into the slide between the upper die roller assembly and the lower die roller assembly of the die-cutting equipment, thereby restricting the movement between the upper die roller assembly and the lower die roller assembly of the die-cutting equipment.

[0008] Unlike existing technologies, the above-mentioned technical solution uses a rotating fastener to drive a limiting block that at least partially extends into the slide between the upper and lower die roller assemblies, forming a rigid physical limit when the equipment is not in operation. This limit effectively prevents excessive downward movement of the upper die roller assembly or excessive upward movement of the lower die roller assembly due to external vibration or impact, fundamentally preventing rigid collisions between the two. This avoids scratches and dents on the precision roller surfaces and damage to bearings caused by accidental impacts, significantly improving the safety and reliability of the die-cutting equipment during circulation and storage. Furthermore, when the die-cutting equipment needs to be used normally, the rotating fastener can drive the limiting block out of the slide, ensuring the normal operation of the die-cutting equipment.

[0009] As one embodiment of this utility model, the limiting device for the die-cutting equipment also includes an elastic element. The elastic element is located inside the side frame of the die-cutting equipment and is sleeved outside the fastener. One side of the elastic element is connected to the side frame of the die-cutting equipment, and the other side of the elastic element is connected to the limiting block.

[0010] Thus, the elastic element provides a reset tendency or preload to the limit block. When the fastener is rotated forward to disengage the limit block from its locked position, the elastic element assists the limit block in retracting smoothly and quickly, preventing jamming. Simultaneously, this preload ensures that the threaded pair remains in good contact, helping to eliminate gaps and improve the overall responsiveness and operational stability of the device.

[0011] As one embodiment of this utility model, the side frame of the die-cutting equipment is provided with a first hole, a second hole and a third hole that are connected to each other. The first hole is located away from the spring device of the die-cutting equipment. The diameter of the second hole is larger than the diameter of the first hole. The diameter of the third hole is larger than the diameter of the second hole. The third hole is connected to the slide rail.

[0012] The fastener includes a threaded rod that passes horizontally through a first hole and a second hole and then extends into a third hole. An elastic element is fitted over the threaded rod, with one side of the elastic element connected to the stepped surface of the second hole. A limiting block moves horizontally within the third hole.

[0013] Thus, the pre-fabricated system of holes of specific shapes and sizes on the side frame provides precise installation positioning and guiding space for each component. The first hole mainly guides the threaded rod; the second hole provides a receiving space and a reliable support step for the elastic element; and the third hole provides a precise guide slide for the linear movement of the limit block, ensuring that it can accurately align and enter the slide between the mold rollers. This integrated design makes the device compact, with good overall rigidity and easy assembly.

[0014] In one embodiment of this utility model, the bottom of the limiting block near the spring device of the die-cutting equipment is a first L-shaped portion. When the limiting block extends at least partially into the slide, the first L-shaped portion is used to cooperate with the lower die roller device of the die-cutting equipment.

[0015] Thus, the first L-shaped portion at the bottom of the limiting block forms a convex structure. When the limiting block extends into the slide, the first L-shaped portion can abut against the outer contour of the lower die roller device, avoiding the lower die roller device while effectively restricting the upward movement of the lower die roller device.

[0016] In one embodiment of this utility model, the top of the limiting block near the spring device of the die-cutting equipment is a second L-shaped portion. When the limiting block extends at least partially into the slide, the second L-shaped portion is used to cooperate with the upper die roller device of the die-cutting equipment.

[0017] Thus, by adding a second L-shaped portion to the top of the first L-shaped portion, the limiting block forms a convex structure, with the protrusion extending into the slide rail. When the limiting block extends into the slide rail, the second L-shaped portion abuts against the outer contour of the upper mold roller device, avoiding the upper mold roller device while cooperating with the upper and lower mold roller devices from both above and below. This achieves bidirectional restriction on the downward movement of the upper mold roller device and the upward movement of the lower mold roller device, resulting in a more comprehensive and reliable locking effect.

[0018] As one embodiment of this utility model, the fastener also includes a head, which is located on the outside of the side frame of the die-cutting equipment and connected to the threaded rod. A rotating hole is provided inside the head.

[0019] Thus, the head located on the outside of the side frame provides the operator with a convenient point of force application. The operator can operate by inserting a standard tool (such as a hex wrench) into the rotating hole, which is labor-saving and efficient.

[0020] In one embodiment of this utility model, the first hole is a smooth hole, and the threaded rod is clearance-fitted with the first hole;

[0021] The inner side of the head abuts against the outer wall of the side frame of the die-cutting equipment to restrict the axial movement of the threaded rod.

[0022] Thus, the first hole, acting as a clear hole, fits with the threaded rod with a clearance, serving only as radial support and guide, without restricting its rotation. The inner side of the head abuts against the outer wall of the side frame of the die-cutting equipment, forming an axial hard limit on the threaded rod. This structure ensures that the threaded rod itself does not experience axial movement when the fastener is rotated; its rotational motion is completely converted into the linear motion of the limiting block through the threaded pair. At the same time, the friction generated by the head pressing against the fastener also assists in preventing loosening.

[0023] In one embodiment of this utility model, the third hole is a square hole or a keyway hole, and the outer contour of the limiting block is adapted to the inner wall shape of the third hole.

[0024] Thus, by setting the third hole to a non-circular cross-section (such as square or keyway) and matching the shape of the limiting block to it, the possibility of the limiting block rotating with the fastener within the third hole is effectively limited. This ensures that the limiting block can only translate along a preset straight path, making the conversion from rotary motion to linear motion more reliable and avoiding thread jamming or malfunction caused by the rotation of the limiting block.

[0025] To achieve the above objectives, in a second aspect, the present invention also provides a frame, which includes two side frames and a bottom plate and a top plate connecting the two side frames;

[0026] The upper mold roller device is installed inside the frame;

[0027] The lower die roller assembly is installed inside the frame and located below the upper die roller assembly, with a slide rail formed between the lower die roller assembly and the upper die roller assembly;

[0028] A spring device is installed between the lower die roller device and the upper die roller device;

[0029] As provided by the inventor above, each limiting device for a die-cutting equipment is installed on a side frame.

[0030] Unlike existing technologies, the above-mentioned technical solution integrates the limiting device into the die-cutting equipment, forming a complete die-cutting device with transport locking function. By symmetrically installing the limiting device on the two side frames, the die roller device can be locked evenly and stably from both sides of the equipment simultaneously, preventing uneven loading or jamming caused by unilateral force. This die-cutting equipment combines flexibility in working condition with safety in non-working condition, greatly improving the overall reliability and service life of the equipment.

[0031] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0032] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0033] In the accompanying drawings of the instruction manual:

[0034] Figure 1 This is a schematic diagram of the structure of a die-cutting device when the limiting device is used for limiting according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the die-cutting equipment from another perspective when the limiting device of one embodiment of this application is used for limiting;

[0036] Figure 3 for Figure 1 Enlarged view of A in the middle;

[0037] Figure 4 for Figure 1 An enlarged view of another embodiment of A;

[0038] Figure 5 This is a schematic diagram of the structure of a die-cutting device in normal use according to an embodiment of this application;

[0039] Figure 6 for Figure 5 Enlarged view of B in the middle;

[0040] Figure 7 This is a schematic diagram of the framework of one embodiment of this application;

[0041] Figure 8 This is a schematic diagram of the side frame structure according to an embodiment of this application.

[0042] The reference numerals used in the above figures are explained as follows:

[0043] 100-Die-cutting equipment; 1-Frame; 11-Side frame; 111-First hole; 112-Second hole; 1121-Step surface; 113-Third hole; 12-Base plate; 13-Top plate; 2-Upper die roller device; 21-Upper bearing seat assembly; 22-Upper die roller; 3-Lower die roller device; 31-Lower bearing seat assembly; 32-Lower die roller; 4-Spring device; 5-Limiting device; 51-Fastener; 511-Threaded rod; 512-Head; 5121-Rotating hole; 52-Limiting block; 521-First L-shaped part; 522-Second L-shaped part; 53-Elastic element; 6-Slide rail; X-Horizontal direction. Detailed Implementation

[0044] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0045] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0046] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0047] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0048] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0049] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0050] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0051] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0052] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0053] In die-cutting of flexible materials such as non-woven fabrics, a die frame structure with buffer springs is often used. The upper and lower die roller assemblies are connected by a spring device to accommodate materials of different thicknesses and protect the equipment. However, during transportation, handling, or storage, when subjected to external vibration or impact, the spring device may be over-compressed or over-stretched, causing the upper and lower die roller assemblies to collide with each other, resulting in damage to the precision roller surfaces or bearings.

[0054] In view of this, this application provides a limiting device 5 for a die-cutting equipment 100, including a fastener 51 and a limiting block 52. The fastener 51 extends horizontally X and is fixedly installed in the side frame 11 of the die-cutting equipment 100, and is disposed relative to the spring device 4 of the die-cutting equipment 100. The outer surface of the fastener 51 is provided with an external thread. The limiting block 52 is located in the side frame 11 of the die-cutting equipment 100 and is sleeved on the outside of the fastener 51. The limiting block 52 has an internal thread, and the internal thread is threadedly connected to the external thread. Rotating the fastener 51 drives the limiting block 52 to extend at least partially into the slide 6 between the upper die roller device 2 and the lower die roller device 3 of the die-cutting equipment 100, so as to restrict the movement between the upper die roller device 2 and the lower die roller device 3 of the die-cutting equipment 100.

[0055] According to some embodiments of this application, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 7 This embodiment relates to a die-cutting equipment 100, including a frame 1, an upper die roller device 2, a lower die roller device 3, a spring device 4, and a limiting device 5 for the die-cutting equipment 100. The frame 1 includes two side frames 11 and a bottom plate 12 and a top plate 13 connecting the two side frames 11. The upper die roller device 2 is installed inside the frame 1. The lower die roller device 3 is installed inside the frame 1 and located below the upper die roller device 2. A slide 6 is formed between the lower die roller device 3 and the upper die roller device 2. The spring device 4 is installed between the lower die roller device 3 and the upper die roller device 2. Each limiting device 5 for the die-cutting equipment 100 is installed on one side frame 11.

[0056] The frame 1 includes two opposing side frames 11 and a base plate 12 and a top plate 13 connecting the two side frames 11. A lower die roller assembly 3 and an upper die roller assembly 2 are installed within the frame 1. The lower die roller assembly 3 includes a lower bearing seat assembly 31 mounted on the base plate 12 and a lower die roller 32 mounted on the lower bearing seat assembly 31. The upper die roller assembly 2 includes an upper bearing seat assembly 21 and an upper die roller 22 mounted on the upper bearing seat assembly 21. A spring assembly 4 is installed between the upper bearing seat assembly 21 and the lower bearing seat assembly 31, allowing the upper die roller assembly 2 to elastically float relative to the lower die roller assembly 3 within a certain range. A gap is formed between the upper die roller assembly 2 and the lower die roller assembly 3 for flexible material to pass through; this gap is also referred to as the slide 6 mentioned later.

[0057] The above technical solution integrates the limiting device 5 into the die-cutting equipment 100, forming a complete die-cutting equipment 100 with transport locking function. By symmetrically installing the limiting device 5 on the two side frames 11, the die roller device can be locked evenly and stably from both sides of the equipment simultaneously, preventing uneven loading or jamming caused by unilateral force. This die-cutting equipment 100 combines flexibility in working condition with safety in non-working condition, greatly improving the overall reliability and service life of the equipment.

[0058] According to some embodiments of this application, please refer to Figures 1 to 8 This embodiment also relates to a limiting device 5 for a die-cutting equipment 100, including a fastener 51 and a limiting block 52. The fastener 51 extends horizontally X and is fixedly installed inside the side frame 11 of the die-cutting equipment 100, and is disposed relative to the spring device 4 of the die-cutting equipment 100. The outer surface of the fastener 51 is provided with an external thread. The limiting block 52 is sleeved on the fastener 51 and has an internal thread, which is threadedly connected to the external thread. Rotating the fastener 51 drives the limiting block 52 to extend at least partially into the slide 6 between the upper die roller device 2 and the lower die roller device 3 of the die-cutting equipment 100, thereby restricting the movement between the upper die roller device 2 and the lower die roller device 3 of the die-cutting equipment 100.

[0059] Fasteners 51 can be bolts, screws, studs, etc., and each fastener 51 needs to correspond to a limiting block 52. The limiting device 5 can be installed in one of the side frames 11 to play a unilateral limiting role. Alternatively, a limiting device 5 can be set in both side frames 11 to lock the mold roller device evenly and stably from both sides of the equipment at the same time, preventing unbalanced load or jamming caused by unilateral force.

[0060] When the die-cutting equipment 100 needs to be transported or stored, the fastener 51 is rotated counterclockwise, and the limiting block 52 converts the rotational motion into horizontal linear motion and moves towards the slide rail 6 until it is at least partially inserted into the slide rail 6. When the die-cutting equipment 100 is ready to be put into operation, the fastener 51 is rotated clockwise, and the limiting block 52 converts the rotational motion into horizontal linear motion and moves away from the slide rail 6 until it is completely within the side frame 11. At this time, the slide rail 6 is fully opened, the spring device 4 can function normally, and the die-cutting equipment 100 enters the working state.

[0061] The above technical solution, by rotating the fastener 51 to drive the limiting block 52 to at least partially extend into the slide rail 6 between the upper and lower die roller devices 3, can form a rigid physical limit when the equipment is not in operation. This limit effectively prevents the upper die roller device 2 from moving excessively downward or the lower die roller device 3 from moving excessively upward due to external vibration or impact, fundamentally preventing rigid collisions between the two, avoiding scratches and dents on the precision roller surface, and damage to the bearings caused by accidental impacts, significantly improving the safety and reliability of the die-cutting equipment 100 during circulation and storage. In addition, when the die-cutting equipment 100 needs to be used normally, the fastener 51 can be rotated to drive the limiting block 52 out of the slide rail 6, ensuring the normal operation of the die-cutting equipment 100.

[0062] like Figure 3 , Figure 4 and Figure 6 As shown, the limiting device 5 for the die-cutting equipment 100 also includes an elastic element 53. The elastic element 53 is located inside the side frame 11 of the die-cutting equipment 100. The elastic element 53 is sleeved outside the fastener 51. One side of the elastic element 53 is connected to the side frame 11 of the die-cutting equipment 100, and the other side of the elastic element 53 is connected to the limiting block 52.

[0063] The elastic element 53 is elastic, and can elastically contract when subjected to pressure, and can return to its initial shape when the pressure is removed. The elastic element 53 can be made of metallic elastic materials such as metal springs, or it can be made of non-metallic elastic materials such as rubber and silicone.

[0064] Thus, the elastic element 53 provides a reset tendency or preload for the limiting block 52. When the fastener 51 is rotated forward to disengage the limiting block 52 from the locked position, the elastic element 53 assists the limiting block 52 to retract smoothly and quickly, preventing jamming. At the same time, this preload ensures that the threaded pair always maintains a good contact state, which helps to eliminate gaps and improve the responsiveness and smoothness of the entire device.

[0065] like Figure 3 and Figure 8As shown, the side frame 11 of the die-cutting equipment 100 has a first hole 111, a second hole 112, and a third hole 113 that are connected to each other. The first hole 111 is located away from the spring device 4 of the die-cutting equipment 100. The diameter of the second hole 112 is larger than the diameter of the first hole 111, and the diameter of the third hole 113 is larger than the diameter of the second hole 112. The third hole 113 is connected to the slide rail 6. The fastener 51 includes a threaded rod 511. The threaded rod 511 passes through the first hole 111 and the second hole 112 in the horizontal direction X and then extends into the third hole 113. The elastic member 53 is sleeved on the threaded rod 511. One side of the elastic member 53 is connected to the stepped surface 1121 of the second hole 112. The limiting block 52 moves in the third hole 113 in the horizontal direction X.

[0066] The first hole 111, the second hole 112, and the third hole 113 are three interconnected holes with a difference in diameter between adjacent holes, thus forming a three-tiered step. The first hole 111 and the second hole 112 can both be circular holes, but the diameter of the second hole 112 is larger than the diameter of the first hole 111, forming a stepped surface 1121.

[0067] The threaded rod 511 has external threads. The threaded rod 511 is inserted horizontally from the outside, passing through the first hole 111 and the second hole 112 in sequence, and then extending into the third hole 113. The length of the threaded rod 511 in the horizontal direction X does not exceed the length of the side frame 11. Preferably, the length of the threaded rod 511 in the horizontal direction X is set to be consistent with the internal length of the side frame 11, that is, the threaded rod 511 is fully inserted into the third hole 113, but does not exceed the third hole 113 to enter the slide rail 6.

[0068] The elastic element 53 is preferably a helical spring, which is sleeved on the threaded rod 511 and located inside the second hole 112. One side of the elastic element 53 abuts against the stepped surface 1121 of the second hole 112, and the other side abuts against the limiting block 52, so that it is always subjected to a preload force in the direction of the slide 6.

[0069] Thus, the pre-fabricated holes of specific shapes and sizes on the side frame 11 provide precise installation positioning and guiding space for each component. The first hole 111 mainly guides the threaded rod 511; the second hole 112 provides a receiving space and a reliable support step for the elastic element 53; the third hole 113 provides a precise guide slide 6 for the linear movement of the limiting block 52, ensuring that it can accurately align and enter the slide 6 between the mold rollers. This integrated design makes the device compact, with good overall rigidity, and easy to assemble.

[0070] like Figure 3 , Figure 4 and Figure 6As shown, the bottom of the limiting block 52 near the spring device 4 of the die-cutting equipment 100 is a first L-shaped portion 521. When the limiting block 52 extends at least partially into the slide rail 6, the first L-shaped portion 521 is used to cooperate with the lower die roller device 3 of the die-cutting equipment 100.

[0071] Thus, the first L-shaped portion 521 at the bottom of the limiting block 52 forms a convex structure. When the limiting block 52 extends into the slide rail 6, the first L-shaped portion 521 can abut against the outer contour of the lower die roller device 3, avoiding the lower die roller device 3 while effectively restricting the upward movement of the lower die roller device 3.

[0072] like Figure 4 As shown, the limiting block 52 is located near the top of the spring device 4 of the die-cutting equipment 100 and has a second L-shaped portion 522. When the limiting block 52 extends at least partially into the slide rail 6, the second L-shaped portion 522 is used to cooperate with the upper die roller device 2 of the die-cutting equipment 100.

[0073] Thus, based on the first L-shaped portion 521, a second L-shaped portion 522 is added to the top, making the limiting block 52 form a convex structure, with the protrusion of the convex structure extending into the slide rail 6. When the limiting block 52 extends into the slide rail 6, the second L-shaped portion 522 can abut against the outer contour of the upper mold roller device 2, avoiding the upper mold roller device 2 while cooperating with the upper mold roller device 2 and the lower mold roller device 3 from both the top and bottom directions, respectively, realizing bidirectional restriction on the downward movement of the upper mold roller device 2 and the upward movement of the lower mold roller device 3, making the locking effect more comprehensive and reliable.

[0074] like Figure 3 and Figure 6 As shown, the fastener 51 also includes a head 512, which is located outside the side frame 11 of the die-cutting equipment 100 and connected to the threaded rod 511. A rotating hole 5121 is provided inside the head 512.

[0075] In this embodiment, the fastener 51 is preferably a screw. The rotating hole 5121 can be a circular hole, an internal hexagonal hole, a screw hole, etc.

[0076] Thus, the head 512 located on the outside of the side frame 11 provides the operator with a convenient point of force application. The operator can operate by inserting a standard tool (such as a hex wrench) into the rotating hole 5121, which is labor-saving and efficient.

[0077] like Figure 3 As shown, the first hole 111 is a smooth hole, and the threaded rod 511 is clearance-fitted with the first hole 111; the inner side of the head 512 abuts against the outer side wall of the side frame 11 of the die-cutting equipment 100 to restrict the axial movement of the threaded rod 511.

[0078] Thus, the first hole 111, acting as a clear hole, fits with the threaded rod 511 with a clearance, serving only as radial support and guide, without restricting its rotation. The inner side of the head 512 abuts against the outer wall of the side frame 11 of the die-cutting equipment 100, thus forming an axial hard limit on the threaded rod 511. This structure ensures that when the fastener 51 is rotated, the threaded rod 511 itself does not experience axial movement, and its rotational motion is completely converted into the linear motion of the limiting block 52 through the threaded pair. At the same time, the friction generated by the head 512 pressing against also assists in preventing loosening.

[0079] like Figure 3 As shown, the third hole 113 is a square hole or a keyway hole, and the outer contour of the limiting block 52 is adapted to the inner wall shape of the third hole 113.

[0080] Thus, by setting the third hole 113 to a non-circular cross-section (such as square or keyway shape) and matching the shape of the limiting block 52, the possibility of the limiting block 52 rotating with the fastener 51 within the third hole 113 is effectively limited. This ensures that the limiting block 52 can only translate along a preset straight path, making the conversion from rotational motion to linear motion more reliable and avoiding jamming or failure of the threaded pair (i.e., external and internal threads) due to the rotation of the limiting block 52.

[0081] The working principle of the limit device 5 is as follows:

[0082] like Figures 1 to 4 As shown, when the die-cutting equipment 100 needs to be transported or stored, the rotating hole 5121 of the head 512 is rotated counterclockwise using a tool. Since the head 512 side abuts against the outer side of the side frame 11, the fastener 51 itself does not move axially but only rotates. Through threaded transmission, the limiting block 52 overcomes part of the pressure of the elastic element 53 and moves towards the slide 6 ( Figure 3 and Figure 4 Move in a straight line from center to left. Until its first L-shaped portion 521 abuts against the outer contour of the lower bearing seat assembly 31 and the second L-shaped portion 522 abuts against the outer contour of the upper bearing seat assembly 21, thereby locking the relative movement space between the upper mold roller device 2 and the lower mold roller device 3, achieving reliable locking.

[0083] like Figure 5 and Figure 6 As shown, when the die-cutting equipment 100 is ready to work, the rotating hole 5121 of the head 512 is rotated clockwise. Similarly, the fastener 51 only rotates. Under the combined action of the threaded drive and the restoring force of the elastic element 53, the limiting block 52 moves away from the slide rail 6. Figure 6 (From center to right) Move straight back until it completely exits the slide 6 area and retracts into the third hole 113. At this time, the slide 6 between the upper mold roller device 2 and the lower mold roller device 3 is fully opened, the spring device 4 can function normally, and the equipment enters the working state.

[0084] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection for this utility model.

Claims

1. A limiting device for a die-cutting machine, characterized in that, include: Fasteners are horizontally extended and fixedly installed inside the side frame of the die-cutting equipment and are positioned relative to the spring device of the die-cutting equipment. The outer surface of the fasteners is provided with external threads. A limiting block is sleeved on the fastener and has an internal thread that is threadedly connected to the external thread. Rotating the fastener drives the limiting block to extend at least partially into the slide between the upper die roller assembly and the lower die roller assembly of the die-cutting equipment, thereby restricting the movement between the upper die roller assembly and the lower die roller assembly of the die-cutting equipment.

2. The limiting device for die-cutting equipment according to claim 1, characterized in that, The limiting device for the die-cutting equipment also includes an elastic element, which is located inside the side frame of the die-cutting equipment. The elastic element is sleeved outside the fastener, with one side of the elastic element connected to the side frame of the die-cutting equipment and the other side of the elastic element connected to the limiting block.

3. The limiting device for die-cutting equipment according to claim 2, characterized in that, The side frame of the die-cutting equipment has a first hole, a second hole, and a third hole that are connected to each other. The first hole is located away from the spring device of the die-cutting equipment. The diameter of the second hole is larger than the diameter of the first hole. The diameter of the third hole is larger than the diameter of the second hole. The third hole is connected to the slide rail. The fastener includes a threaded rod that passes through the first hole and the second hole along the horizontal direction and then extends into the third hole. An elastic element is sleeved on the threaded rod, and one side of the elastic element is connected to the stepped surface of the second hole. The limiting block moves along the horizontal direction within the third hole.

4. The limiting device for die-cutting equipment according to claim 3, characterized in that, The limiting block has a first L-shaped portion near the bottom of the spring device of the die-cutting equipment. When the limiting block extends at least partially into the slide, the first L-shaped portion is used to cooperate with the lower die roller device of the die-cutting equipment.

5. The limiting device for die-cutting equipment according to claim 4, characterized in that, The limiting block has a second L-shaped portion near the top of the spring device of the die-cutting equipment. When the limiting block extends at least partially into the slide, the second L-shaped portion is used to cooperate with the upper die roller device of the die-cutting equipment.

6. The limiting device for die-cutting equipment according to claim 3, characterized in that, The fastener also includes a head located outside the side frame of the die-cutting equipment and connected to the threaded rod, and the head has a rotating hole inside.

7. The limiting device for die-cutting equipment according to claim 6, characterized in that, The first hole is a smooth hole, and the threaded rod is clearance-fitted with the first hole; The inner side of the head abuts against the outer side wall of the side frame of the die-cutting equipment to restrict the axial movement of the threaded rod.

8. The limiting device for die-cutting equipment according to claim 3, characterized in that, The third hole is a square hole or a keyway hole, and the outer contour of the limiting block is adapted to the inner wall shape of the third hole.

9. A die-cutting device, characterized in that, include: A frame, the frame including two side frames and a bottom plate and a top plate connecting the two side frames; The upper mold roller device is installed within the frame; A lower die roller assembly is installed within the frame and located below the upper die roller assembly, with the slide rail formed between the lower die roller assembly and the upper die roller assembly; A spring device is installed between the lower die roller device and the upper die roller device; The limiting device for a die-cutting equipment as described in any one of claims 1 to 8, wherein each of the limiting devices for the die-cutting equipment is correspondingly installed on one of the side frames.

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