Shaft sleeve device for circular knife mold
By designing a special bushing device to adjust the Y-axis horizontal line of the circular die, the problem of product defects caused by machine misalignment was solved, the cost of re-opening the die was reduced, and economic efficiency was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-03-17
AI Technical Summary
The existing circular die is misaligned in the Y-axis direction during installation, resulting in substandard product dimensions. This necessitates the creation of a new die, increasing costs.
A special bushing device is designed to adjust the Y-axis horizontal line of the circular die by adjusting the left and right long rod studs and the knob, so as to restore it to a vertical state and avoid the need to reopen the die.
This eliminates the need for remaking molds, reducing production costs and improving economic efficiency.
Smart Images
Figure CN223998620U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of circular knife mold accessories, and more specifically, it relates to a special bushing device for circular knife molds. Background Technology
[0002] A circular die is a cutting tool commonly used for materials such as paper, plastic, and film. It is a core component of a die-cutting machine, and its precision and cutting efficiency have a significant impact on production efficiency and product quality. When installing a circular die, a bushing is used to mount the die onto the machine base. The bushing is fitted onto the outer end of the circular die. If there is a circular die that is offset horizontally in the Y direction in a set of installed circular dies, the resulting product size will be NG (not acceptable).
[0003] In existing technology, because the width of the bushing used in normal operation is just enough to fit into the gap of the machine base, the circular die cannot be allowed to swing left and right during production. The circular dies provided by die suppliers typically have about 95% of their Y-axis horizontal lines perpendicular (e.g., ...). Figure 5 As shown), about 5% of the horizontal lines in the Y direction are offset (e.g. Figure 4 As shown in the figure, when encountering a circular die with a Y-axis horizontal line that is not perpendicular, the circular die must be remade, which will bring additional expenses and increase costs, thus affecting the economic benefits. Based on this, this utility model designs a special bushing device for circular dies to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a special bushing device for a circular knife mold to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A special bushing device for a circular die includes a base, a special bushing, and two fixing blocks. The special bushing is placed on the base, and an adjustment gap is reserved between the base and the special bushing. The two fixing blocks are respectively fixedly installed on the left and right sides of the base by fastening bolts. One fixing block is threadedly connected to a left long rod stud, and the other fixing block is threadedly connected to a right long rod stud. The special bushing is located between the left and right long rod studs. A knob is fixedly provided at one end of each of the left and right long rod studs.
[0007] As a preferred embodiment of this utility model, the left long rod stud is threaded with limit nuts I on both sides of the fixing block, and the right long rod stud is threaded with limit nuts II on both sides of the fixing block.
[0008] As a preferred embodiment of this utility model, there are two left long rod studs and two right long rod studs, and the left long rod studs and the right long rod studs are symmetrically distributed vertically.
[0009] As a preferred embodiment of this utility model, the surface of the fixing block is provided with a side groove, and the end cap of the fastening bolt is located in the side groove.
[0010] As a preferred technical solution of this utility model, a plurality of anti-slip protrusions are fixedly provided on the periphery of the knob part, and the anti-slip protrusions are distributed in a ring at equal intervals.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] In use, if a circular die has a Y-axis horizontal line that is offset to the left, the right long rod stud can be rotated to the left using the knob, leaving a gap between the right long rod stud and the special bushing. The left long rod stud can then be rotated to the right, creating an adjustment gap between the machine base and the special bushing. The end of the left long rod stud can push the special bushing to the right along the adjustment gap, thus adjusting the Y-axis horizontal line of the circular die back to vertical. Conversely, if a circular die has a Y-axis horizontal line that is offset to the right, the left long rod stud can be rotated to the right using the knob, leaving a gap between the left long rod stud and the special bushing. The right long rod stud can then be rotated to the left, allowing the end of the right long rod stud to push the special bushing to the left along the adjustment gap, thus adjusting the Y-axis horizontal line of the circular die back to vertical. This eliminates the need to reopen the circular die, preventing additional expenses and reducing costs, resulting in good economic benefits. Attached Figure Description
[0013] Figure 1 This is a front view schematic diagram of a special bushing device for a circular knife mold according to the present invention;
[0014] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;
[0015] Figure 3 This is a cross-sectional view of a special bushing device for a circular knife mold according to the present invention;
[0016] Figure 4 A schematic diagram of a product matched with a set of circular die-cutting molds offset to the horizontal line in the Y direction;
[0017] Figure 5 A schematic diagram of a product matched with a set of circular die-cutting molds perpendicular to the Y-axis horizontal line.
[0018] In the diagram: 1. Base; 2. Special bushing; 3. Adjustment clearance; 4. Fastening bolt; 5. Fixing block; 501. Side groove; 6. Left long rod stud; 601. Limit nut I; 7. Right long rod stud; 701. Limit nut II; 8. Knob. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] like Figures 1 to 3 As shown, this utility model provides a special bushing device for a circular knife mold, including a base 1, a special bushing 2, and two fixing blocks 5. The special bushing 2 is placed on the base 1, and an adjustment gap 3 is reserved between the base 1 and the special bushing 2. The two fixing blocks 5 are respectively fixedly installed on the left and right sides of the base 1 by fastening bolts 4. One fixing block 5 is threadedly connected to a left long rod stud 6, and the other fixing block 5 is threadedly connected to a right long rod stud 7. The special bushing 2 is located between the left long rod stud 6 and the right long rod stud 7. A knob part 8 is fixedly provided at one end of both the left long rod stud 6 and the right long rod stud 7.
[0021] Among them, such as Figure 1 As shown, the left long rod stud 6 is threaded with limit nuts I601 on both sides of the fixing block 5. By clamping the limit nuts I601 on both sides of the corresponding fixing block 5, the left long rod stud 6 can be further positioned and reinforced. The right long rod stud 7 is threaded with limit nuts II701 on both sides of the fixing block 5. By clamping the limit nuts II701 on both sides of the corresponding fixing block 5, the right long rod stud 7 can be further positioned and reinforced.
[0022] Among them, such as Figure 3 As shown, there are two left long rod studs 6 and two right long rod studs 7, and the left long rod studs 6 and the right long rod studs 7 are symmetrically distributed vertically.
[0023] Among them, such as Figure 2 As shown, the surface of the fixing block 5 is provided with a side groove 501, and the end cap of the fastening bolt 4 is located in the side groove 501, which achieves the purpose of hiding the fastening bolt 4.
[0024] Among them, such as Figure 1 As shown, a number of anti-slip protrusions are fixedly provided on the periphery of the knob part 8. The anti-slip protrusions are distributed in a ring at equal intervals, which achieves the purpose of improving the anti-slip effect of the periphery of the knob part 8.
[0025] The working principle of this utility model:
[0026] If the production of the circular knife machine encounters such Figure 4 In the situation shown, there is a circular die with the Y-axis horizontal line shifted to the left. Using the knob 8, the right long rod stud 7 is rotated to the left, leaving a gap between the right long rod stud 7 and the special bushing 2. The left long rod stud 6 is rotated to the right, and an adjustment gap 3 is provided between the machine base 1 and the special bushing 2. The end of the left long rod stud 6 can push the special bushing 2 to the right along the adjustment gap 3. Figure 5 As shown, the circular die is adjusted to the right along the Y-axis horizontal line to restore it to vertical, so that the left long rod stud 6 and the right long rod stud 7 can clamp and position the special bushing 2. Conversely, if there is a circular die with the Y-axis horizontal line offset to the right, the knob 8 is used to rotate the left long rod stud 6 to the right, leaving a gap between the left long rod stud 6 and the special bushing 2. The right long rod stud 7 is rotated to the left, and the end of the right long rod stud 7 can push the special bushing 2 to the left along the adjustment gap 3. Figure 5 As shown, the circular cutter mold is adjusted to the left along the Y-axis horizontal line to return to vertical, so that the left long rod stud 6 and the right long rod stud 7 can clamp and position the special bushing 2, thus eliminating the need to reopen the circular cutter mold.
[0027] It should be noted that, in this document, relational 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 such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bushing device for a circular knife die, characterized by: Including base (1), axle sleeve (2) and two fixed blocks (5); The axle sleeve (2) is placed on the base (1), and an adjustment gap (3) is reserved between the base (1) and the axle sleeve (2); the two fixed blocks (5) are fixedly installed on the left and right sides of the base (1) by fastening bolts (4) respectively; One of the fixed blocks (5) is through threaded connected with a left long rod stud (6), and the other fixed block (5) is through threaded connected with a right long rod stud (7), the axle sleeve (2) is located between the left long rod stud (6) and the right long rod stud (7), one end of the left long rod stud (6) and the right long rod stud (7) is fixedly provided with a knob part (8).
2. A bushing apparatus for a circular knife die as defined in claim 1, wherein: The outer part of the left long rod stud (6) is threaded connected with a limiting nut I (601) on both sides of the fixed block (5), and the outer part of the right long rod stud (7) is threaded connected with a limiting nut II (701) on both sides of the fixed block (5).
3. A bushing apparatus for a circular knife die as defined in claim 1, wherein: The number of the left long rod stud (6) and the right long rod stud (7) is two, and the left long rod stud (6) and the right long rod stud (7) are symmetrically distributed.
4. A bushing apparatus for a circular knife die as defined in claim 1, wherein: The surface of the fixed block (5) is provided with a side groove (501), and the end cap part of the fastening bolt (4) is located in the side groove (501).
5. A bushing apparatus for a circular knife die as defined in claim 1, wherein: The circumferential part of the knob part (8) is fixedly provided with a plurality of anti-skid convex parts, and the anti-skid convex parts are annularly and equidistantly distributed.