A pre-printed carton post-trace forming alignment device with double reference positioning pins

Abstract

The utility model discloses a kind of color box preprinting post-process forming alignment device of double datum positioning pin, including workbench and the positioning platform for supporting color box die-cutting plate being set on workbench, main positioning datum system and vice positioning datum system are provided on the positioning platform.The main positioning datum system includes at least two first datum pins fixedly installed in the positioning platform one end close to feeding side, and the top of first datum pin is equipped with first positioning locking nut.The vice positioning datum system includes at least one second datum pin and fine adjustment mechanism adjustably installed in the positioning platform one end away from feeding side, and the top of second datum pin is equipped with second positioning locking nut.Main datum pin diameter is big, and it is strong to realize fast initial positioning, and vice datum pin cooperation X / Y direction fine adjustment mechanism can complete millimeter level correction, combined with the close fit design of smaller taper nut of vice datum pin, satisfy high-precision register requirement.

Description

Technical Field

[0001] This utility model relates to the field of alignment device technology, specifically a color box pre-printing post-forming alignment device with dual reference positioning pins. Background Technology

[0002] In the post-printing molding process of color boxes, the alignment accuracy between the die-cutting plate and the pre-printed pattern directly determines the quality of the finished color box, which is a core technical pain point in the industry. Existing alignment devices mostly adopt a single-reference positioning pin structure, constraining the die-cutting plate position only by fixing the reference pin on the feeding side. Because the reference pin lacks fine-tuning function, significant alignment deviations easily occur when the color box die-cutting plate has processing deformation or positioning hole errors, resulting in insufficient alignment accuracy between the pre-printed pattern and the die-cut edge. At the same time, traditional devices lack effective anti-deflection mechanisms, allowing the die-cutting plate to easily rotate around the reference pin; adjustment requires disassembling the plate and repeatedly debugging, which is cumbersome and inefficient. Furthermore, the plate is prone to movement due to vibration during processing, and the existing fixing structure cannot guarantee stability, resulting in a high scrap rate; accuracy verification relies on manual comparison of the pattern and the die-cut edge, which is highly subjective and prone to large errors. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a color box pre-printing post-forming alignment device with double reference positioning pins, which can effectively solve the problems mentioned in the background technology.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A color box pre-printing post-forming alignment device with dual reference positioning pins includes a worktable and a positioning platform set on the worktable for supporting the color box die-cutting plate. The positioning platform is provided with a main positioning reference system and a secondary positioning reference system.

[0006] The main positioning reference system includes at least two first reference pins fixedly installed on the positioning platform near the feeding side, and the top of the first reference pin is provided with a first positioning locking nut.

[0007] The secondary positioning reference system includes at least one second reference pin and a fine-tuning mechanism that are adjustablely mounted on the positioning platform at the end away from the feed side. The top of the second reference pin is provided with a second positioning locking nut.

[0008] The diameter of the first reference pin is larger than that of the second reference pin. The second reference pin is mounted on the positioning platform through a fine-tuning mechanism. The fine-tuning mechanism is used to fine-tune the position of the second reference pin in the X or Y direction parallel to the plane of the positioning platform and lock it. The first reference pin and the second reference pin together constitute a dual reference positioning system for accurately constraining the position of the color box die-cutting plate on the positioning platform.

[0009] As a further description of the above technical solution, the fine-tuning mechanism includes:

[0010] A base fixed to the positioning platform;

[0011] An X-axis slider is slidably mounted on the base, and the X-axis slider is driven to move in the X direction by a first adjusting bolt;

[0012] A Y-axis slider is slidably mounted on an X-axis slider, and the Y-axis slider is driven to move in the Y-axis by a second adjusting bolt;

[0013] The first adjusting bolt and the second adjusting bolt are respectively provided with locking nuts, and the second reference pin is fixedly installed on the Y-axis slider.

[0014] As a further description of the above technical solution, the cone angle of the second positioning locking nut of the second reference pin is smaller than the cone angle of the first positioning locking nut of the first reference pin.

[0015] As a further description of the above technical solution, the worktable is also provided with at least one anti-deflection auxiliary pin, which is located in the area between the main positioning reference system and the secondary positioning reference system. The top of the anti-deflection auxiliary pin has a cylindrical part that is clearance-fitted with the auxiliary hole on the color box die-cutting plate.

[0016] As a further description of the above technical solution, the workbench is also equipped with a manual pressure plate mechanism for pressing and fixing the color box die-cutting plate.

[0017] As a further description of the above technical solution, a laser alignment indicator is provided on the positioning platform. The laser beam emitted by the laser alignment indicator is projected onto the registration marks pre-printed on the color box die-cutting plate, which is used to visually display and assist in verifying the registration accuracy after fine-tuning.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The color box pre-printing post-forming alignment device with double reference positioning pins of this utility model has at least one of the following beneficial effects during use:

[0020] Firstly, positioning accuracy is significantly improved. Through a dual system of "coarse setting with a primary datum and fine adjustment with a secondary datum," the large diameter and high rigidity of the primary datum pin enable rapid initial positioning, while the secondary datum pin, in conjunction with the X / Y fine-tuning mechanism, allows for millimeter-level correction. Combined with the tight fit design of the secondary datum pin's smaller tapered nut, it meets high-precision alignment requirements. Secondly, adjustment is convenient and highly versatile. The fine-tuning mechanism, driven by bolts, eliminates the need to disassemble the sheet metal, adapting to die-cutting plates of different sizes and hole precisions, avoiding the limitations of traditional fixed datum pins. Thirdly, stability is outstanding. The upper and lower fixing of the first and second positioning locking nuts, the planar anti-rotation of the anti-deflection auxiliary pin, and the overall clamping of the manual pressure plate form triple protection, completely eliminating movement and rotation problems during processing. Fourthly, inspection efficiency is high. The laser alignment indicator converts accuracy into intuitive laser-mark overlap, reducing human judgment errors and operational barriers. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall installation structure of a color box pre-printing post-forming alignment device with double reference positioning pins according to this utility model.

[0022] Figure 2 This is a schematic diagram of the first side structure of a color box pre-printing post-forming alignment device with double reference positioning pins according to the present invention.

[0023] Figure 3 This is a schematic diagram of the second side structure of a color box pre-printing and post-forming alignment device with double reference positioning pins according to the present invention.

[0024] Figure 4 This is a perspective structural diagram of a color box pre-printing post-forming alignment device with double reference positioning pins according to the present invention.

[0025] Numbering on the map:

[0026] 1. Worktable; 101. Manual pressure plate mechanism; 102. Laser alignment indicator; 2. Positioning platform; 201. Anti-deflection auxiliary pin; 3. Main positioning reference system; 301. First reference pin; 302. First positioning locking nut; 303. Locking nut; 304. First adjusting bolt; 305. X-axis slider; 306. Y-axis slider; 307. Second adjusting bolt; 4. Secondary positioning reference system; 401. Second reference pin; 402. Second positioning locking nut. Detailed Implementation

[0027] 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.

[0028] like Figure 1-4 As shown, this utility model provides a color box pre-printing post-forming alignment device with dual reference positioning pins, including a worktable 1 and a positioning platform 2 set on the worktable 1 for supporting the color box die-cutting plate. The positioning platform 2 is provided with a main positioning reference system 3 and a secondary positioning reference system 4.

[0029] The main positioning reference system 3 includes at least two first reference pins 301 fixedly installed on the positioning platform 2 near the feeding side, and the top of the first reference pin 301 is provided with a first positioning locking nut 302.

[0030] During feeding, the color box die-cutting plate is first inserted into the corresponding positioning hole of the plate through the first reference pin 301 (larger diameter, stronger rigidity) on the feeding side of the positioning platform 2. Its function is to quickly constrain the main position of the die-cutting plate and avoid large positional displacement during feeding. At the same time, it is initially fixed by the first positioning locking nut 302 at the top to prevent the plate from moving up and down.

[0031] The secondary positioning reference system 4 includes at least one second reference pin 401 adjustablely mounted on the positioning platform 2 at one end away from the feed side and a fine-tuning mechanism. The top of the second reference pin 401 is provided with a second positioning locking nut 402.

[0032] The positioning hole at the other end of the die-cutting plate engages with the second reference pin 401 (smaller in diameter, suitable for fine-tuning). Since the second reference pin 401 is installed through a fine-tuning mechanism, its position can be precisely adjusted in subsequent steps. Together with the first reference pin 301, it forms a dual reference constraint of "one main and one auxiliary, one coarse and one fine," locking the planar position of the die-cutting plate from both ends.

[0033] The diameter of the first reference pin 301 is larger than the diameter of the second reference pin 401. The second reference pin 401 is mounted on the positioning platform 2 by a fine-tuning mechanism. The fine-tuning mechanism is used to fine-tune the position of the second reference pin 401 in the X or Y direction parallel to the plane of the positioning platform 2 and lock it. The first reference pin 301 and the second reference pin 401 together constitute a dual reference positioning system for accurately constraining the position of the color box die-cutting plate on the positioning platform 2.

[0034] Furthermore, the fine-tuning mechanism includes:

[0035] The base is fixed to the positioning platform 2;

[0036] An X-axis slider 305 is slidably mounted on the base, and the X-axis slider 305 is driven to move in the X direction by a first adjusting bolt 304;

[0037] A Y-axis slider 306 is slidably disposed on an X-axis slider 305, and the Y-axis slider 306 is driven to move in the Y direction by a second adjusting bolt 307;

[0038] The first adjusting bolt 304 and the second adjusting bolt 307 are respectively provided with locking nuts 303, and the second reference pin 401 is fixedly installed on the Y-axis slider 306.

[0039] After the two references are initially aligned, any slight alignment deviations can be corrected at the millimeter level using a fine-tuning mechanism. Adjusting the X-axis (parallel to the feed direction): Rotating the first adjusting bolt 304 drives the X-axis slider 305 on the base to move, causing the second reference pin 401 to fine-tune along the X-axis. Adjusting the Y-axis (perpendicular to the feed direction): Rotating the second adjusting bolt 307 drives the Y-axis slider 306 on the X-axis slider 305 to move, causing the second reference pin 401 to fine-tune along the Y-axis. Locking after adjustment: After fine-tuning, the slider position is fixed by the locking nuts 303 of the first and second adjusting bolts 307, ensuring that the second reference pin 401 no longer shifts, thus completing the precision positioning.

[0040] Traditional single-datum positioning is prone to alignment deviations due to board deformation and hole position errors. However, the dual system of "coarse setting of the main datum + fine adjustment of the secondary datum" constrains the position of the board from both ends. With independent fine adjustment in the X / Y directions, the alignment error can be controlled within a very small range, meeting the high-precision registration requirements (such as ±0.1mm level) of the "pattern-die-cut edge" of pre-printed color boxes.

[0041] Furthermore, the cone angle of the second positioning locking nut 402 of the second reference pin 401 is smaller than the cone angle of the first positioning locking nut 302 of the first reference pin 301.

[0042] The second reference pin 401 has a smaller diameter and a smaller nut cone angle, allowing for a tighter fit with the positioning holes on the die-cutting plate. This reduces errors caused by clearances and further improves positioning accuracy. The fine-tuning mechanism uses a "bolt + slider" mechanical structure, eliminating the need to disassemble the plate during adjustment. It allows for real-time, independent adjustment of the X / Y positions, making operation convenient. The adjustable design of the second reference pin 401 can adapt to die-cutting plates of different sizes and hole precisions, avoiding the limitations of traditional fixed reference pins that require a specific pin size, thus improving the device's versatility.

[0043] Furthermore, the worktable 1 is also provided with at least one anti-deflection auxiliary pin 201, which is located in the area between the main positioning reference system 3 and the secondary positioning reference system 4. The top of the anti-deflection auxiliary pin 201 has a cylindrical part that is clearance-fitted with the auxiliary hole on the color box die-cutting plate.

[0044] The anti-deflection auxiliary pin 201 is located between the main and secondary reference systems. Its cylindrical part is inserted into the auxiliary hole of the die-cutting plate (clearance fit) to prevent the die-cutting plate from rotating around the reference pin during fine adjustment or subsequent processing, thus avoiding angular deflection.

[0045] From "top and bottom fixing" (first and second positioning locking nuts 402) to "planar anti-rotation" (anti-deflection auxiliary pin 201), and then to "overall clamping" (manual pressure plate mechanism 101), a triple fixing protection is formed. This completely eliminates problems such as "plate movement, rotation, vibration and offset" during processing, ensuring that the alignment accuracy remains stable throughout the forming process and reducing the scrap rate.

[0046] Furthermore, the workbench 1 is also equipped with a manual pressure plate mechanism 101 for pressing and fixing the color box die-cutting plate.

[0047] After alignment, the color box die-cutting plate is pressed firmly onto the positioning platform 2 by manually operating the pressure plate, completely eliminating the gap between the plate and the platform, and preventing positional displacement caused by vibration during processing.

[0048] Furthermore, the positioning platform 2 is equipped with a laser alignment indicator 102. The laser beam emitted by the laser alignment indicator 102 is projected onto the registration marks pre-printed on the color box die-cutting plate, which is used to visually display and assist in verifying the registration accuracy after fine-tuning.

[0049] The laser beam is projected onto the pre-printed registration marks (such as crosshairs or color marks) on the color box die-cutting plate. Operators can directly observe the overlap between the laser and the marks, quickly verify the alignment accuracy after fine-tuning, and ensure that the registration error is within the acceptable range without relying on the blurry judgment of the human eye.

[0050] Traditional alignment requires manual comparison of the printed pattern with the die-cut edge to determine accuracy, which is inefficient and prone to errors. The laser alignment indicator 102 transforms the abstract concept of "alignment accuracy" into an intuitive "laser-marker overlap," allowing operators to quickly determine whether the alignment is qualified, reducing reliance on skilled workers and improving inspection efficiency.

[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A color box pre-printing and post-forming alignment device with double reference positioning pins, comprising a worktable and a positioning platform disposed on the worktable for supporting the color box die-cutting plate, characterized in that: The positioning platform is equipped with a primary positioning reference system and a secondary positioning reference system; The main positioning reference system includes at least two first reference pins fixedly installed on the positioning platform near the feeding side, and the top of the first reference pin is provided with a first positioning locking nut. The secondary positioning reference system includes at least one second reference pin and a fine-tuning mechanism that are adjustablely mounted on the positioning platform at the end away from the feed side. The top of the second reference pin is provided with a second positioning locking nut. The diameter of the first reference pin is larger than that of the second reference pin. The second reference pin is mounted on the positioning platform through a fine-tuning mechanism. The fine-tuning mechanism is used to fine-tune the position of the second reference pin in the X or Y direction parallel to the plane of the positioning platform and lock it. The first reference pin and the second reference pin together constitute a dual reference positioning system for accurately constraining the position of the color box die-cutting plate on the positioning platform.

2. The color box pre-printing post-forming alignment device with double reference positioning pins according to claim 1, characterized in that: The fine-tuning mechanism includes: A base fixed to the positioning platform; An X-axis slider is slidably mounted on the base, and the X-axis slider is driven to move in the X direction by a first adjusting bolt; A Y-axis slider is slidably mounted on an X-axis slider, and the Y-axis slider is driven to move in the Y-axis by a second adjusting bolt; The first adjusting bolt and the second adjusting bolt are respectively provided with locking nuts, and the second reference pin is fixedly installed on the Y-axis slider.

3. The color box pre-printing post-forming alignment device with double reference positioning pins according to claim 1, characterized in that: The cone angle of the second positioning locking nut of the second reference pin is smaller than the cone angle of the first positioning locking nut of the first reference pin.

4. The color box pre-printing post-forming alignment device with double reference positioning pins according to claim 1, characterized in that: The worktable is also provided with at least one anti-deflection auxiliary pin, which is located in the area between the main positioning reference system and the secondary positioning reference system. The top of the anti-deflection auxiliary pin has a cylindrical part that is clearance-fitted with the auxiliary hole on the color box die-cutting plate.

5. The color box pre-printing post-forming alignment device with double reference positioning pins according to claim 1, characterized in that: The workbench is also equipped with a manual pressure plate mechanism for pressing and fixing the color box die-cutting plate.

6. The color box pre-printing post-forming alignment device with double reference positioning pins according to claim 1, characterized in that: The positioning platform is equipped with a laser alignment indicator. The laser beam emitted by the laser alignment indicator is projected onto the registration marks pre-printed on the color box die-cutting plate, which is used to visually display and assist in verifying the registration accuracy after fine-tuning.

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