Trademark printing position mistake proofing device
By designing a trademark printing position error-proof device, using the pressure plate and PLC control combined with proximity switch and return spring, the precise positioning of corner window glass is achieved, solving the problem of positioning inaccurate caused by human error in the prior art, and improving the printing quality and the service life of the equipment.
Patent Information
- Application Number
- CN202422133492.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-02
AI Technical Summary
In the prior art, the positioning of the trademark printing position depends on the operator's hand feeling, and there are artificial errors, which leads to errors easily during mass production and wear of the nylon positioning block, which cannot guarantee the consistency and accuracy of the trademark's position on the glass.
A trademark printing position anti-error device is designed, and the pressure plate is fitted with the proximity switch and return spring. The three anti-error devices are used to cooperate with the edge position of the corner window glass respectively to ensure accurate positioning, and the automatic printing process is realized through PLC control solenoid valves.
It improves the controllability and consistency of the trademark in the glass position, reduces batches of waste, extends the service life of nylon positioning blocks, and improves printing yield and product quality.
Smart Images
Figure CN223045363U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of printing positioning, in particular to an anti-error device for the printing position of trademarks. Background Art
[0002] The glass positioning of a semi-automatic trademark printing machine relies on 3 nylon positioning blocks on the workbench for positioning. In this process, the operator needs to closely lean the glass against the 3 nylon positioning blocks (3 points form a plane) every time. After ensuring good contact between the glass and the positioning blocks, step on the foot switch, and the commercial printing machine completes the printing process. Only then can it be ensured that the printing position of the trademark on the glass is correct. Disadvantages: 1. The operator completely relies on the feeling in the hand to determine whether the glass positioning is in place. 2. There are differences in the operation methods and the feeling of each person's hand. 3. The rhythm of the toughened production line is fast, and the operator cannot check the trademark position of each piece of glass for verification. Once an error occurs, it will result in a batch of defective products. 4. The nylon positioning blocks will quickly wear out when rubbing against the glass. If not discovered in time, it will also result in a batch of defective products.
[0003] Therefore, it is necessary to provide an anti-error device for the printing position of trademarks to solve the above technical problems. Summary of the Utility Model
[0004] To solve the above technical problems, the utility model provides an anti-error device for the printing position of trademarks.
[0005] An anti-error device for the printing position of trademarks provided by the utility model includes a workbench surface and three anti-error devices installed on the top of the workbench surface for detecting the edge positions of corner window glass. The anti-error device includes a base, a pressing plate is hinged to the base through a rotating shaft, a proximity switch and a return spring are installed on the base, a contact part is provided on the pressing plate, and the contact part cooperates with the proximity switch and the return spring. When the pressing plate rotates along the rotating shaft towards the proximity switch, the contact part first contacts the return spring and then contacts the proximity switch.
[0006] Preferably, a threaded hole is provided in the base, an adjusting screw is connected in the threaded hole through a thread, and the adjusting screw cooperates with one end of the pressing plate close to the rotating shaft.
[0007] Preferably, the pressing plate is an arc-shaped pressing plate.
[0008] Preferably, the three anti-error devices respectively cooperate with the three sides of the corner window glass.
[0009] Preferably, the pressing plate is a component made of conductive metal.
[0010] Compared with the related art, the utility model provided has the following beneficial effects:
[0011] The diagonal window glass is positioned through three error-proof devices, which improves the yield rate, enhances the product quality at the same time, makes the position of the trademark on the glass controllable, and improves the consistency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0013] Figure 2 is a schematic diagram of the structure of the error-proof device of the present utility model.
[0014] Reference numerals in the figure: 1, workbench surface; 2, error-proof device; 3, base; 4, rotating shaft; 5, pressing plate; 6, proximity switch; 7, contact part; 8, return spring; 9, adjusting screw. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0016] Please refer to Figures 1 to 2 , an error-proof device for the printing position of a trademark, including a workbench surface 1, on which three error-proof devices 2 are carefully arranged. These error-proof devices are specifically used to accurately detect the edge position of the diagonal window glass. Each error-proof device 2 is equipped with a stable base 3, which is hinged with a flexible pressing plate 5 by a rotating shaft 4 through a precise design. On the base 3, a proximity switch 6 and a return spring 8 are also skillfully installed, and a contact part 7 is provided on the pressing plate 5. This contact part 7 closely cooperates with the proximity switch 6 and the return spring 8 to play a role together. When the pressing plate 5 rotates along the rotating shaft 4 towards the proximity switch 6, the contact part 7 will first contact the return spring 8 and then contact the proximity switch 6. This ingenious design ensures the sensitivity and accuracy of the error-proof device 2.
[0017] To further optimize the performance of the device, a threaded hole is specifically provided in the base 3, and an adjusting screw 9 is connected by threading. This adjusting screw 9 closely cooperates with one end of the pressing plate 5 close to the rotating shaft 4, effectively restricting the rotation angle of the pressing plate 5, so that the device can more accurately adapt to diagonal window glasses of different sizes.
[0018] In actual application, the base 3 of the error-proof device 2 is firmly fixed on the workbench surface 1 of the semi-automatic commercial printer, and an advanced PLC is installed on the workbench surface 1. When the diagonal window glass is placed on the device, it will push the pressing plate 5, causing the pressing plate 5 to rotate around the rotating shaft 4. When the pressing plate 5 rotates to the position of the proximity switch 6, it will be blocked and stop rotating. At this time, the proximity switch 6 will sense the metal part of the pressing plate 5, conduct to form a circuit, and the electrical signal will be transmitted to the PLC immediately to confirm that this point has been accurately positioned. Similarly, the other two error-proof devices 2 will also conduct respectively, and the electrical signals will be transmitted to the PLC, so as to ensure that all three positions have been accurately in place.
[0019] It is worth mentioning that the pressing plate 5 is designed in an arc shape, which enables it to be in tangential contact with the edge of the corner window glass, further improving the accuracy and stability of positioning. At the same time, the three anti-misalignment devices 2 are respectively in close cooperation with the three sides of the corner window glass to jointly perform precise positioning on the corner window glass, ensuring the accurate position of the trademark printing.
[0020] After the conditions are met, the PLC will send a set of electrical signals to the relevant solenoid valves, and the solenoid valves will sequentially complete the following actions: (1. The screen printing stencil lifting cylinder descends and the stencil approaches the glass to be printed; 2. The squeegee pressing cylinder descends to press the screen tightly; 3. The squeegee cylinder pushes the squeegee to scrape the ink; 4. After the squeegee printing is completed, the cylinder rises; 5. The ink spreading cylinder spreads the ink and rises; 6. The screen printing stencil lifting cylinder rises).
[0021] In addition, the pressing plate 5 is made of a metal material component, which enables the proximity switch 6 to more easily detect its position change, further improving the sensitivity and reliability of the device.
[0022] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.
Claims
1. A trademark printing position error prevention device, characterized in that: The invention comprises a work surface (1) and three error-proofing devices (2) installed on the top of the work surface (1) for detecting the edge position of the corner window glass. The error-proofing device (2) comprises a base (3). A pressure plate (5) is hinged on the base (3) through a rotating shaft (4). A proximity switch (6) and a reset spring (8) are installed on the base (3). A contact portion (7) is provided on the pressure plate (5), and the contact portion (7) cooperates with the proximity switch (6) and the reset spring (8). When the pressure plate (5) rotates along the rotating shaft (4) toward the proximity switch (6), the contact portion (7) first contacts the reset spring (8) and then contacts the proximity switch (6).
2. A trademark printing position error prevention device according to claim 1, characterized in that: The base (3) is provided with a threaded hole, in which an adjusting screw (9) is connected via a thread, and the adjusting screw (9) cooperates with an end of the pressing plate (5) close to the rotating shaft (4).
3. A trademark printing position error prevention device according to claim 1, characterized in that: The pressing plate (5) is an arc-shaped pressing plate.
4. A trademark printing position error prevention device according to claim 1, characterized in that: The three anti-error devices (2) are respectively matched with the three edges of the corner window glass.
5. The trademark printing position error prevention device according to claim 1, characterized in that: The pressing plate (5) is a metal component.