An internal adjustment knife slider and a round die cutting machine

Abstract

The present invention relates to the technical field of die-cutting machines, and specifically discloses an internal tool-adjusting slider and a rotary die-cutting machine. The internal tool-adjusting slider includes a slider body, a sensing member, and a probe. The shaft end of the rotary die can be rotatably arranged in the slider body. The sensing member is arranged on the slider body and is configured to control the rotary die to stop rotating when triggered. The probe is arranged on the rotary die and is aligned with the initial position in the circumferential direction of the rotary die. When the probe rotates to a preset distance from the sensing member, the sensing member can be triggered. The rotary die-cutting machine includes the above-mentioned internal tool-adjusting slider. When the probe rotates to a preset distance from the sensing member and triggers the sensing member, the sensing member controls the rotary die to stop rotating. Since the probe is aligned with the initial position in the circumferential direction of the rotary die, the rotary die can automatically stop at the initial position in the circumferential direction, automatically realizing the circumferential reset of the die-cutting tool and improving the adjustment efficiency of the circumferential reset.

Description

Technical Field

[0001] The present invention belongs to the technical field of die-cutting machines, and particularly relates to an internal tool-adjusting slider and a rotary die-cutting machine. Background Art

[0002] A rotary die-cutting machine belongs to a type of die-cutting machine, also known as a rotary cutter machine, a hob machine or a web press. The rotary die-cutting machine performs die-cutting processing by continuously rotating in the form of a hob, and has a high production efficiency.

[0003] The outer circumferential surface of the circular die of the die-cutting tool has a pattern according to the product design requirements to form a die-cutting plate. Under the action of pressure, the die-cutting machine rolls and cuts the printed matter or the blank into a predetermined shape and separates it from the base material. During the production process of the rotary die-cutting machine, when replacing the blank or restarting production after stopping, it is necessary to perform circumferential alignment on the die-cutting tool so that the circumferential initial position of the die-cutting tool remains the same each time die-cutting starts, and the circumferential reset of the die-cutting tool is realized.

[0004] The circumferential reset of the existing die-cutting tool is generally manually adjusted by workers. The adjustment time is long, and it is time-consuming and laborious. Moreover, each time production is resumed or the blank is replaced, the operator needs to perform manual adjustment, which restricts the further improvement of the die-cutting efficiency of the rotary die-cutting machine. Summary of the Invention

[0005] An object of the present invention is to provide an internal tool-adjusting slider to automatically realize the circumferential reset of the die-cutting tool, thereby improving the adjustment efficiency of the circumferential reset.

[0006] Another object of the present invention is to provide a rotary die-cutting machine to automatically realize the circumferential reset of the die-cutting tool, thereby improving the adjustment efficiency of the circumferential reset and the die-cutting efficiency of the rotary die-cutting machine.

[0007] To achieve this purpose, the technical solution adopted by the present invention is as follows:

[0008] An internal tool-adjusting slider includes:

[0009] A slider main body, and the shaft end of the circular die can be rotatably arranged in the slider main body;

[0010] An induction member, arranged on the slider main body, and configured to control the circular die to stop rotating when triggered; and

[0011] A probe, arranged on the circular die and facing the initial position in the circumferential direction of the circular die, and the probe is configured to trigger the induction member when it rotates to a preset distance from the induction member along with the circular die.

[0012] Further, the slider body includes a slide table, and a sleeve structure is provided inside the slide table. The shaft end of the circular knife is rotatably arranged inside the sleeve structure. An annular groove is formed between the outer wall of the sleeve structure and the inner wall of the slide table. The probe extends into and is slidably arranged in the annular groove.

[0013] Further, an avoidance groove communicating with the annular groove is formed on the outer wall of the slide table. The avoidance groove is used to accommodate at least part of the sensing member.

[0014] Further, an avoidance plane is formed on the outer peripheral surface of the sleeve structure, and the avoidance plane is disposed opposite to the avoidance groove.

[0015] Further, the slider body further includes:

[0016] A mounting plate is arranged on the end face of the slide table. The sensing member is arranged on the mounting plate and is located between the slide table and the mounting plate.

[0017] Further, a limiting groove is formed on the end face of the mounting plate facing the slide table. At least part of the sensing member is located in the limiting groove.

[0018] Further, the internal tool-adjusting slider further includes a sensing disc, and the sensing disc includes:

[0019] A disc body is arranged on the end face of the circular knife;

[0020] The probe is arranged on the disc body and extends towards the slider body.

[0021] Further, the internal tool-adjusting slider further includes a thimble assembly, and the thimble assembly includes:

[0022] A bearing sleeve is rotatably arranged inside the slider body;

[0023] A first bearing is arranged inside the bearing sleeve;

[0024] A thimble is arranged on the first bearing and is rotatably arranged inside the bearing sleeve through the first bearing; the tip of the thimble is matched with the shaft end circular hole of the circular knife; and

[0025] A snap ring is clamped inside the bearing sleeve and abuts against the axial end face of the thimble.

[0026] Further, the slider body further includes:

[0027] An end plate is arranged at one end of the slider body away from the circular knife;

[0028] A spring is clamped between the bearing sleeve and the end plate so that the thimble always presses against the shaft end circular hole of the circular knife.

[0029] A round knife die-cutting machine includes the above-mentioned die-cutting knife.

[0030] The beneficial effects of the present invention are as follows:

[0031] The internally adjustable knife slider proposed by the present invention includes a slider main body, a sensing member, and a probe. The sensing member is installed on the slider main body, and the probe is installed on the round knife and rotates with the round knife. When the probe rotates to a preset distance from the sensing member, the sensing member is triggered to control the round knife to stop rotating. Since the initial positions of the probe and the round knife in the circumferential direction are directly opposite, the round knife can automatically stop at the initial position in the circumferential direction, realizing the circumferential reset of the die-cutting knife and improving the adjustment efficiency of the circumferential reset.

[0032] The round knife die-cutting machine proposed by the present invention includes the above-mentioned internally adjustable knife slider, which can realize the circumferential reset of the die-cutting knife, improve the adjustment efficiency of the circumferential reset and the die-cutting efficiency of the round knife die-cutting machine. Description of the Drawings

[0033] Figure 1 is a schematic structural diagram of the die-cutting knife provided by an embodiment of the present invention;

[0034] Figure 2 is an exploded schematic structural diagram of the internally adjustable knife slider provided by an embodiment of the present invention;

[0035] Figure 3 is a schematic structural diagram of the internally adjustable knife slider provided by an embodiment of the present invention;

[0036] Figure 4 is a cross-sectional view of the internally adjustable knife slider provided by an embodiment of the present invention.

[0037] The names and reference numerals of the components in the figure are as follows:

[0038] 10, round knife; 101, gear; 20, internally adjustable knife slider; 30, externally adjustable knife slider;

[0039] 1, slider main body; 11, slide table; 111, sleeve structure; 1111, avoidance plane; 112, annular groove; 113, avoidance groove; 12, mounting plate; 121, limiting groove; 13, end plate; 131, wire passing hole; 2, sensing member; 3, sensing disc; 31, disc body; 32, probe; 4, thimble assembly; 41, bearing sleeve; 42, first bearing; 43, thimble; 44, snap ring; 5, second bearing; 6, spring;

[0040] 7, adjusting screw; 8, locking nut. Detailed Embodiments

[0041] To make the technical problems solved by the present invention, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings rather than all of them.

[0042] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the top of", and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the bottom of", and "under the bottom of" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0044] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0045] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments.

[0046] The existing round die-cutting machine includes a base, a working station frame, and a die-cutting knife. Among them, the working station frame is installed on the base, and the die-cutting knife is installed on the working station frame.

[0047] Such as Figure 1As shown, the die-cutting knife includes a circular knife 10, an inner knife-adjusting slider 20, and an outer knife-adjusting slider 30. The inner knife-adjusting slider 20 and the outer knife-adjusting slider 30 are both installed on the working station frame, and the two shaft ends of the circular knife 10 are respectively rotatably arranged on the inner knife-adjusting slider 20 and the outer knife-adjusting slider 30.

[0048] In addition, the circular knife 10 includes a knife body. The knife body is a cylinder, and a circular hole is provided at the shaft end extending along its axial direction. The axial end of the knife body has a gear 101. The driving unit of the circular knife die-cutting machine (such as the power transmission shaft of the circular knife die-cutting machine) is in transmission connection with the circular knife 10 through the gear 101 to drive the circular knife 10 to rotate.

[0049] As Figure 2 shown, the inner knife-adjusting slider 20 of this embodiment includes a slide table 11, a second bearing 5, an end plate 13, and a thimble assembly 4. The outer knife-adjusting slider 30 and the inner knife-adjusting slider 20 have substantially the same structure, and also include a slide table, a second bearing, an end plate, and a thimble assembly. The slide table 11 is a rectangular block, and the end plate 13 is installed on the side of the slide table 11 away from the circular knife 10 through bolts. A through hole penetrating along its length direction is provided in the slide table 11. The second bearing 5 and the thimble assembly 4 are both installed in the through hole, and the second bearing 5 is installed on the side of the through hole close to the circular knife 10. The end plate 13 is arranged on the side of the slide table 11 away from the circular knife 10 and is fixedly installed through bolts to block the through hole of the slide table 11.

[0050] Specifically, the shaft ends at both ends of the circular knife 10 are respectively sleeved in the second bearing of the outer knife-adjusting slider 30 and the second bearing 5 on the inner knife-adjusting slider 20, realizing the stable installation of the circular knife 10. At the same time, the friction between the circular knife 10 and the outer knife-adjusting slider 30 and the inner knife-adjusting slider 20 can be reduced, making the rotation of the circular knife 10 smoother, which is beneficial to improving the die-cutting efficiency of the circular knife 10. The thimble assemblies of the outer knife-adjusting slider 30 and the thimble assembly 4 on the inner knife-adjusting slider 20 are respectively matched with the circular holes at the shaft ends of the circular knife 10, so that the circular knife 10 is rotatably clamped between the inner knife-adjusting slider 20 and the outer knife-adjusting slider 30.

[0051] The second bearing 5 of this embodiment is a self-lubricating bearing, which can maintain good lubrication between the second bearing 5 and the shaft end of the circular knife 10, reduce the wear amount of the second bearing 5 and the circular knife 10, and is beneficial to extending the service life of the circular knife 10.

[0052] As Figure 2 and Figure 4As shown, the thimble assembly 4 includes a bearing sleeve 41, a first bearing 42, a thimble 43, and a snap ring 44. The bearing sleeve 41 is rotatably arranged in the slide 11. The first bearing 42 is arranged in the bearing sleeve 41. The thimble 43 is arranged on the first bearing 42 and is rotatably arranged in the bearing sleeve 41 through the first bearing 42. The tip of the thimble 43 is engaged with the axial end circular hole of the circular knife 10. The snap ring 44 is clamped in the bearing sleeve 41 and abuts against the axial end face of the thimble 43 to prevent the thimble 43 from slipping out of the bearing sleeve 41.

[0053] It should be noted that, as Figure 1 shown, the external tool-adjusting slider 30 further includes an adjusting screw 7 and a locking nut 8. One end of the adjusting screw 7 extends into the slide of the external tool-adjusting slider 30 and abuts against the thimble assembly in the slide. The adjusting screw 7 is threadedly connected to the slide of the external tool-adjusting slider 30. By rotating the adjusting screw 7, the distance between the circular knife 10 and the internal tool-adjusting slider 20 can be adjusted, thereby adjusting the die-cutting station of the circular knife 10. After the adjusting screw 7 is adjusted in place, the locking nut 8 is tightened to lock the axial displacement of the circular knife 10, thereby realizing the quick adjustment of the circular knife 10.

[0054] As Figure 2 and Figure 4 shown, the internal tool-adjusting slider 20 of this embodiment further includes a spring 6. The spring 6 is clamped between the bearing sleeve 41 and the end plate 13 so that the thimble 43 always abuts against the circular hole corresponding to the axial end of the circular knife 10. It should be noted that the spring 6 of this embodiment is always in a compressed state. When the adjusting screw 7 adjusts the die-cutting station of the circular knife 10, the spring 6 can adjust the axial position of the thimble 43 in the internal tool-adjusting slider 20 by stretching or further compressing, so as to ensure that the thimble 43 in the internal tool-adjusting slider 20 always clamps the circular knife 10, improving the stability of the installation structure of the circular knife 10.

[0055] When the circular knife die-cutting machine replaces the blank or resumes production after stopping, generally, the circumferential alignment of the die-cutting knife is manually adjusted to realize the circumferential reset of the die-cutting knife, so that the initial circumferential position of the die-cutting knife at the start of each die-cutting remains consistent. At present, the manual adjustment method takes a long time, is laborious to adjust, and frequent manual adjustment affects the improvement of the die-cutting efficiency of the circular knife die-cutting machine.

[0056] To solve the above problems, as Figure 2 and Figure 3 shown, this embodiment discloses an internal tool-adjusting slider 20. The internal tool-adjusting slider 20 includes a slider main body 1, a sensing member 2, and a probe 32. The sensing member 2 is arranged on the slider main body 1. When the sensing member 2 is triggered, it can control the circular knife 10 to stop rotating. The probe 32 is arranged on the circular knife 10 and is directly opposite to the initial circumferential position of the circular knife 10. When the probe 32 rotates with the circular knife 10 to a preset distance from the sensing member 2, it can trigger the sensing member 2.

[0057] In this embodiment, the sensing member 2 is installed on the slider body 1, and the probe 32 is installed on the circular knife 10 and rotates with the circular knife 10. When the probe 32 rotates to a preset distance from the sensing member 2, the sensing member 2 is triggered, and the sensing member 2 controls the circular knife 10 to stop rotating. Since the initial positions of the probe 32 and the circular knife 10 in the circumferential direction are aligned, the circular knife 10 can automatically stop at the initial position in the circumferential direction, realizing the automatic circumferential reset of the die-cutting knife.

[0058] It should be noted that the initial position of the circular knife 10 in the circumferential direction is the starting position of the die-cutting plate on the outer circumferential surface of the circular knife 10, that is, the position where the die-cutting knife starts die-cutting.

[0059] The sensing member 2 in this embodiment is a proximity sensor. When the probe 32 rotates to a preset position, a preset distance is reached between the probe 32 and the proximity sensor, and the proximity sensor is triggered. The proximity sensor generates an electrical signal and transmits it to the control unit of the circular knife die-cutting machine, so that the control unit controls the circular knife 10 to stop rotating immediately, fixing the probe 32 at the preset position. At this time, the circular knife 10 realizes circumferential reset.

[0060] As Figure 1 shown, the inner adjusting knife slider 20 further includes a sensing disk 3. The sensing disk 3 includes a disk body 31 and a probe 32. The disk body 31 is arranged on the axial end face of the circular knife 10 with a gear 101. The probe 32 is arranged on the disk body 31 and extends towards the slider body 1. The disk body 31 is installed on the circular knife 10 by bolts, so that the sensing disk 3 can rotate synchronously with the circular knife 10.

[0061] The probe 32 in this embodiment is detachably inserted into the disk body 31 along the circumferential direction of the disk body 31, so that the sensing disk 3 can adjust the installation position of the probe 32 on the disk body 31 according to the starting position of the die-cutting plate on the circular knife 10, realizing the flexible installation of the probe 32.

[0062] As Figures 2 - 4 shown, the slider body 1 of the inner adjusting knife slider 20 includes the above-mentioned slide table 11 and end plate 13. Specifically, one end of the slide table 11 facing the circular knife 10 has a sleeve structure 111, and the inner hole of the sleeve structure 111 is a through hole of the slide table 11. The corresponding shaft end on the circular knife 10 is rotatably arranged on a second bearing 5 in the sleeve structure 111. It should be noted that the axial length of the sleeve structure 111 is less than the length of the slide table 11, and an annular groove 112 is formed between the outer wall of the sleeve structure 111 and the inner wall of the slide table 11.

[0063] The probe 32 of this embodiment can extend into and slide within the annular groove 112, shortening the distance between the probe 32 and the inner adjusting knife slider 20, which is beneficial to reducing the length of the die-cutting knife, thereby making the structure of the rotary die-cutting machine more compact and reducing the floor area and volume. In addition, the annular groove 112 can play a role in limiting and protecting the probe 32, preventing the probe 32 from being interfered by the external environment or objects during rotation.

[0064] As Figures 2 - 4 shown, the slider body 1 of this embodiment further includes a mounting plate 12, and the mounting plate 12 is arranged on the end face of the slide 11. Specifically, the mounting plate 12 is mounted on the upper end face of the slide 11 by bolts. The sensing member 2 is arranged on the mounting plate 12 and is located between the slide 11 and the mounting plate 12. The mounting plate 12 can provide a mounting platform for the sensing member 2 and can play a protective role for the sensing member 2. In addition, the slide 11 and the mounting plate 12 can wrap the sensing member 2, preventing the sensing member 2 from being accidentally triggered by the interference of surrounding objects, and improving the reliability and stability of the sensing member 2.

[0065] Specifically, a limiting groove 121 is opened on the end face of the mounting plate 12 facing the slide 11, and at least part of the sensing member 2 is located in the limiting groove 121. The limiting groove 121 can play a role in limiting and fixing the sensing member 2, realizing the stable installation of the sensing member 2 on the mounting plate 12. At the same time, mounting the sensing member 2 in the limiting groove 121 is beneficial to reducing the distance between the mounting plate 12 and the slide 11, thereby reducing the height and volume of the slider body 1.

[0066] Preferably, an avoidance groove 113 communicating with the annular groove 112 is opened on the outer wall of the slide 11, and the avoidance groove 113 is used to accommodate at least part of the sensing member 2. The avoidance groove 113 is arranged opposite to the limiting groove 121 of the mounting plate 12 to avoid interference with the slide 11 when installing the sensing member 2.

[0067] It should be noted that in this embodiment, when the probe 32 rotates to directly below the proximity sensor and the distance between the two is the smallest, the sensor can be triggered. By opening the avoidance groove 113, the physical isolation of the side wall of the slide 11 from the probe 32 and the sensing member 2 can be eliminated, which is beneficial to improving the sensitivity of the sensing member 2, thereby improving the circumferential reset accuracy of the die-cutting knife.

[0068] Furthermore, in order to ensure the smooth installation of the sensing member 2 and reduce the possibility of interference between the sensing member 2 and the slide 11, as Figure 2 and Figure 3 shown, an avoidance plane 1111 is opened on the outer peripheral surface of the sleeve structure 111, and the avoidance plane 1111 is arranged opposite to the avoidance groove 113.

[0069] Since the sensing member 2 is a proximity sensor, the sensing member 2 has wires for transmitting electrical signals and providing electrical energy. AsFigures 2 - 4 As shown, a wire routing hole 131 is provided at a position on the end plate 13 opposite to the limit groove 121. The wire of the sensing member 2 is connected to the control unit of the round knife die cutting machine through the wire routing hole 131 to achieve the transmission of electrical signals and the supply of electrical energy.

[0070] This embodiment also discloses a round knife die cutting machine, which includes the above-mentioned inner tool adjustment slider 20 and can automatically achieve the circumferential reset of the die cutting knife, improving the die cutting efficiency of the round knife die cutting machine.

[0071] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An internal adjustment tool slider, characterized in that, it includes: a slider main body (1), the shaft end of a circular tool (10) is rotatably arranged inside the slider main body (1); a sensing member (2), arranged on the slider main body (1), and configured to control the circular tool (10) to stop rotating when triggered; and a probe (32), arranged on the circular tool (10) and facing the initial position in the circumferential direction of the circular tool (10), the probe (32) is configured to trigger the sensing member (2) when it rotates with the circular tool (10) to a preset distance from the sensing member (2); the slider main body (1) includes a slide table (11), the slide table (11) has a sleeve structure (111) inside, the shaft end of the circular tool (10) is rotatably arranged inside the sleeve structure (111), an annular groove (112) is formed between the outer wall of the sleeve structure (111) and the inner wall of the slide table (11), and the probe (32) extends into and is slidably arranged in the annular groove (112); the internal adjustment tool slider further includes a sensing disc (3), and the sensing disc (3) includes: a disc body (31), arranged on the end face of the circular tool (10); the probe (32), arranged on the disc body (31) and extending towards the slider main body (1).

2. The internal adjustment tool slider according to claim 1, characterized in that, an avoidance groove (113) communicating with the annular groove (112) is formed on the outer wall of the slide table (11), and the avoidance groove (113) is used to accommodate at least part of the sensing member (2).

3. The internal adjustment tool slider according to claim 2, characterized in that, an avoidance plane (1111) is formed on the outer peripheral surface of the sleeve structure (111), and the avoidance plane (1111) is arranged opposite to the avoidance groove (113).

4. The internal adjustment tool slider according to claim 1, characterized in that, the slider main body (1) further includes: a mounting plate (12), arranged on the end face of the slide table (11), the sensing member (2) is arranged on the mounting plate (12) and is located between the slide table (11) and the mounting plate (12).

5. The internal adjustment tool slider according to claim 4, characterized in that, a limiting groove (121) is formed on the end face of the mounting plate (12) facing the slide table (11), and at least part of the sensing member (2) is located in the limiting groove (121).

6. The internal adjustment tool slider according to claim 1, characterized in that, the internal adjustment tool slider further includes a thimble assembly (4), and the thimble assembly (4) includes: a bearing sleeve (41), rotatably arranged inside the slider main body (1); a first bearing (42), arranged inside the bearing sleeve (41); a thimble (43), arranged on the first bearing (42) and rotatably arranged inside the bearing sleeve (41) through the first bearing (42); the tip of the thimble (43) is matched with the shaft end round hole of the circular tool (10); and a snap ring (44), clamped inside the bearing sleeve (41) and abutted against the axial end face of the thimble (43).

7. The internal-adjustable knife slider according to claim 6, wherein, the slider body (1) further comprises: an end plate (13) disposed at one end of the slider body (1) away from the circular knife (10); a spring (6) clamped between the bearing sleeve (41) and the end plate (13) to keep the ejector pin (43) always pressing against the axial end circular hole of the circular knife (10).

8. A circular knife die-cutting machine, wherein, it includes the internal-adjustable knife slider according to any one of claims 1-7.

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