Quick-change structure for pad printing press head

Abstract

The utility model provides a kind of for pad printing pressure head's quick-change structure, including mounting seat and pressure head;Mounting seat contains cover plate, base and two locking assemblies, cover plate is fixedly connected base upper end, base is equipped with the mounting hole of penetration, two locking assemblies are about the symmetry of mounting hole 180 °, slider is slidably installed in installation groove and one end extends base, slider is abutted with base by compression spring, slider is equipped with lock block;Pressure head upper end is fixedly connected mounting column, mounting column is inserted in mounting hole and is locked by lock block and lock groove, lock block and lock groove are equipped with adaptive slope face;Base is equipped with limit pin, and pressure head is equipped with limit hole.The structure can realize the quick disassembly of pressure head, ensure connection stability and installation uniformity, improve operating efficiency and printing precision, and is suitable for the pressure head replacement scene of various pad printing equipment.

Description

Technical Field

[0001] This utility model relates to the field of product processing technology, specifically a quick-change structure for pad printing heads. Background Technology

[0002] Pad printing, as a flexible and efficient surface printing technology, is widely used in the printing of patterns, logos, and parameters on various products such as electronic components, toys, daily-use plastic products, and hardware. The pad printing head is the core component of the pad printing equipment that directly contacts the product to be printed and completes the transfer of the printed pattern. In long-term continuous production, the pad printing head needs to repeatedly contact the product surface and the printing pad, which is prone to wear due to friction and compression, or surface contamination due to printing medium residue. If it is not replaced or cleaned in time, it will cause quality problems such as decreased clarity of the printed pattern, blurred edges, and positional misalignment, directly affecting the appearance and function of the product, and even leading to the production of batches of defective products.

[0003] Currently, most pad printing equipment on the market still uses relatively traditional methods to connect the pad printing head to the machine body, mainly divided into two types: bolt-fastened and simple snap-fit. When using a bolt-fastened structure, replacing the pad printing head requires the use of special tools such as wrenches and screwdrivers to disassemble the fixing bolts one by one. The operation process is cumbersome, not only consuming a lot of manual time and reducing the efficiency of parts changeover on the production line, but also potentially causing thread stripping and damage to the base screw holes due to repeated bolt disassembly, affecting the stability of subsequent connections. When using a simple snap-fit ​​structure, although no tools are needed, the locking force of the snap depends on manual operation, making it difficult to ensure consistency. In high-frequency pressing work, the snap is easily loosened by vibration and external forces, causing the pad printing head to shift or shake during printing, thereby reducing printing accuracy and increasing the product rework rate. In addition, traditional connection structures generally lack precise positioning and guidance designs. After each replacement of the pad printing head, operators need to use measuring tools to repeatedly adjust the height and horizontal position of the head to ensure accurate alignment with the printing pad and the product. This not only further prolongs the replacement time but also makes it difficult to guarantee the uniformity of the head position after each installation. This cannot meet the needs of modern production lines for efficient and precise replacement, thus restricting the improvement of overall production efficiency. Utility Model Content

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a quick-change structure for pad printing heads, enabling rapid assembly and disassembly of the heads while ensuring stable connections and uniform installation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick-change structure for pad printing pressure heads includes:

[0007] The mounting base includes a cover plate, a base, and two locking components. The cover plate is fixed to the upper end of the base. The base has mounting holes that extend from top to bottom through the base. The two locking components are symmetrically distributed at 180° about the axis of the mounting holes. The upper part of the base has mounting grooves that are adapted to the locking components. There are two mounting grooves corresponding to the two locking components, and the two mounting grooves are located on both sides of the mounting holes and communicate with the mounting holes. One side of the base has an opening that communicates with the mounting grooves. The locking components are slidably mounted in the mounting grooves, and one end of the locking components passes through the opening and extends to the outside of the base.

[0008] The pressure head is located below the base; a mounting post is fixedly installed at the upper end of the pressure head; the mounting post is inserted into the mounting hole and locked in the mounting hole by two locking components.

[0009] Preferably, the locking assembly includes a slider and a compression spring; the slider is slidably mounted in the mounting groove, and one end of the slider passes through the opening and extends to the outside of the base; the spring is placed in the mounting groove, with one end abutting against the base and the other end abutting against the slider; a locking block is fixedly provided on the side of the slider near the mounting hole, and the locking block is located in the mounting groove; the mounting post is provided with a locking groove adapted to the locking block; the compression spring pushes the slider to slide outward from the opening of the base, so that the locking block is engaged in the locking groove, and the mounting post is fixed in the mounting hole.

[0010] Preferably, a first slope is provided on the upper end surface of the locking block; a second slope adapted to the first slope is provided in the locking groove of the mounting post; the first slope and the second slope are slidably engaged.

[0011] Preferably, the locking assembly has two compression springs; the two compression springs are arranged parallel and spaced apart in the mounting groove.

[0012] Preferably, a limiting block is fixedly provided on the lower end face of the portion of the slider that extends out to the outside of the opening.

[0013] Preferably, the slider is provided with a guide hole; a guide rod is provided in the mounting groove, the guide rod is fixed on the base and slidably disposed in the guide hole.

[0014] Preferably, a limiting pin is fixedly provided on the lower end surface of the base; a limiting hole adapted to the limiting pin is provided on the upper part of the pressure head, and the limiting pin is inserted into the limiting hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This structure, through the cooperation of slider, compression spring, locking block and locking groove, allows the mounting post to be inserted into the mounting hole and automatically locked by the locking block during installation with the guidance of the first and second slopes, without the need for any tools. During disassembly, simply pressing the slider inward is enough to unlock it. Compared with the traditional bolt fastening which requires disassembling bolts one by one and the ordinary buckle which is prone to jamming, this structure greatly simplifies the operation steps, shortens the pressure head replacement time, and effectively improves the part changeover efficiency and overall production rhythm of the production line.

[0017] Two locking components are symmetrically distributed about the mounting hole at 180°, which can apply locking force evenly from both sides of the mounting post. The compression spring continuously provides outward elastic force to the slider, so that the locking block and the locking groove always remain tightly engaged. At the same time, the guide hole on the slider slides in conjunction with the guide rod in the mounting groove, which limits the lateral sway of the slider during the sliding process, and prevents the pressure head from shifting or loosening during high-frequency pressing, ensuring stable pressing action, thereby improving the clarity and positional accuracy of the printed pattern.

[0018] The limiting pin on the lower end face of the base is precisely matched with the limiting hole on the upper part of the press head. When installing the press head, the limiting pin can be directly inserted into the limiting hole, providing a clear positioning reference for the press head. This avoids the problem of repeatedly adjusting the position of the press head with measuring tools after each press head replacement, ensuring the uniformity of the height and horizontal position of the press head after each installation, reducing the operational complexity of the operator, and further reducing the debugging time after part replacement.

[0019] The limiting block on the outside of the slider can effectively limit the sliding stroke of the slider, prevent the slider from being pressed too much and getting stuck in the mounting groove and unable to reset, thus avoiding damage to the component; the cooperation between the guide rod and the guide hole reduces the direct friction between the slider and the inner wall of the mounting groove, reducing component wear; the two compression springs are set in parallel and spaced apart, which can evenly distribute the elastic force and avoid fatigue damage caused by excessive force on a single spring. The coordinated design of each component effectively extends the service life of the overall structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a structural breakdown diagram of the present invention.

[0022] in:

[0023] 1. Cover plate; 2. Locking assembly; 21. Locking block; 22. First slope; 23. Guide hole; 24. Slider; 25. Limiting block; 26. Guide rod; 27. Compression spring; 3. Base; 31. Limiting pin; 32. Mounting groove; 33. Mounting hole; 34. Opening; 4. Press head; 41. Limiting hole; 42. Locking groove; 43. Mounting post. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 , Figure 2 As shown, a quick-change structure for a pad printing head includes:

[0026] The mounting base includes a cover plate 1, a base 3, and two locking components 2. The cover plate 1 is fixed to the upper end of the base 3. The base 3 is provided with mounting holes 33, which penetrate the base 3 from top to bottom. The two locking components 2 are symmetrically distributed about the axis of the mounting holes 33 at 180°. The upper part of the base 3 is provided with mounting grooves 32 that are adapted to the locking components 2. There are two mounting grooves 32 corresponding to the two locking components 2. The two mounting grooves 32 are located on both sides of the mounting holes 33 and communicate with the mounting holes 33. One side of the base 3 is provided with an opening 34 that communicates with the mounting grooves 32. The locking components 2 are slidably disposed in the mounting grooves 32, and one end of the locking components 2 passes through the opening 34 and extends to the outside of the base 3.

[0027] The cover plate 1 is provided with screw holes for fixing the cover plate 1 and the base 3 together; and it is connected to the pad printing equipment through the cover plate 1.

[0028] The pressure head 4 is located below the base 3; a mounting post 43 is fixedly mounted on the upper end of the pressure head 4; the mounting post 43 is inserted into the mounting hole 33 and locked in the mounting hole 33 by two locking components 2. The pressure head 4 serves as a pad printing component for pressing products.

[0029] Furthermore, the locking assembly 2 includes a slider 24 and a compression spring 27. The slider 24 is slidably mounted in the mounting groove 32, with one end of the slider 24 passing through the opening 34 and extending to the outside of the base 3. The spring is placed in the mounting groove 32, with one end abutting against the base 3 and the other end abutting against the slider 24. A locking block 21 is fixedly provided on the side of the slider 24 near the mounting hole 33, and the locking block 21 is located in the mounting groove 32. The mounting post 43 is provided with a locking groove 42 that matches the locking block 21. The compression spring 27 pushes the slider 24 to slide outward from the opening 34 of the base 3, so that the locking block 21 is engaged in the locking groove 42, fixing the mounting post 43 in the mounting hole 33. Pressing the slider 24, which extends outward from the base 3, towards the inside of the mounting groove 32 compresses the compression spring 27, removes the locking block 21 from the locking groove 42, and allows the mounting post 43 to be pulled out of the mounting hole 33, allowing the pressure head 4 to be removed.

[0030] Furthermore, a first slope 22 is provided on the upper surface of the locking block 21; a second slope that matches the first slope 22 is provided in the locking groove 42 of the mounting post 43; the first slope 22 and the second slope slide against each other. The provision of the first slope 22 and the second slope allows the locking block 21 to be more easily inserted into the locking groove 42, thereby locking and fixing the mounting post 43 to the base 3.

[0031] Furthermore, the locking assembly 2 has two compression springs 27; the two compression springs 27 are arranged parallel and spaced apart in the mounting groove 32 to provide sufficient elastic force support for the sliding rebound of the slider 24.

[0032] Furthermore, a limit block 25 is fixedly provided on the lower end face of the portion of the slider 24 extending out of the opening 34 to prevent the slider 24 from being completely pressed into the mounting groove 32 and getting stuck.

[0033] Furthermore, the slider 24 is provided with a guide hole 23; a guide rod 26 is provided in the mounting groove 32, and the guide rod 26 is fixed to the base 3 and slidably disposed in the guide hole 23. This allows the slider 24 to slide in a predetermined direction, reducing the wobbling of the slider 24 and making the clamping state more stable.

[0034] Furthermore, a limit pin 31 is fixedly provided on the lower end surface of the base 3; a limit hole 41 adapted to the limit pin 31 is provided on the upper part of the pressure head 4, and the limit pin 31 is inserted into the limit hole 41. When installing the pressure head 4, the mounting post 43 is inserted into the mounting hole 33, so that the limit pin 31 is aligned and inserted into the limit hole 41, and then the mounting post 43 is clamped and fixed by the locking assembly 2.

[0035] Example

[0036] The quick-change structure for pad printing pressure head 4 provided by this utility model includes two parts: a mounting base and a pressure head 4. The mounting base consists of a cover plate 1, a base 3, and two locking components 2. The cover plate 1 is fixedly connected to the upper surface of the base 3 through pre-set screw holes, which also facilitate connection and fixation with the pad printing equipment. The base 3 has mounting holes 33 extending from top to bottom through the base 3 for the mounting posts 43 of the pressure head 4 to be inserted. The upper part of the base 3 has two mounting grooves 32 corresponding to the two locking components 2, located on both sides of the mounting holes 33 and communicating with them. One side of the base 3 also has an opening 34 communicating with the mounting grooves 32, providing space for the sliding of the locking components 2.

[0037] The two locking components 2 are centrally symmetrically distributed about the axis of the mounting hole 33 at 180°. Each locking component 2 includes a slider 24 and two compression springs 27. The compression springs 27 are model UH3-15 and are arranged parallel to each other at intervals within the mounting groove 32. The slider 24 is slidably mounted in the mounting groove 32. One end of the slider 24 extends through the opening 34 of the base 3 to the outside of the base 3, and the other end abuts against the base 3 via the compression springs 27. One end of the compression springs 27 abuts against the base 3, and the other end abuts against the slider 24. The upper part provides continuous elastic force to the slider 24; a locking block 21 is fixed on the side of the slider 24 near the mounting hole 33. The locking block 21 is located in the mounting groove 32. Correspondingly, the mounting post 43 fixed at the upper end of the pressure head 4 is provided with a locking groove 42 that matches the locking block 21. The upper end surface of the locking block 21 is provided with a first slope 22. The locking groove 42 is provided with a second slope that matches the first slope 22. When the mounting post 43 is inserted into the mounting hole 33, the first slope 22 and the second slope slide and fit together, guiding the locking block 21 to accurately engage in the locking groove 42.

[0038] A limiting block 25 is fixedly provided on the lower end face of the portion of the slider 24 extending outside the opening 34 to prevent the slider 24 from being completely pressed into the mounting groove 32 and becoming stuck. A guide hole 23 is also provided on the slider 24, and a guide rod 26 is fixed in the mounting groove 32. The guide rod 26 is slidably inserted into the guide hole 23 to ensure that the slider 24 slides in a predetermined direction and reduces shaking. In addition, a limiting pin 31 is fixedly provided on the lower end face of the base 3, and a limiting hole 41 adapted to the limiting pin 31 is provided on the upper part of the pressure head 4. When the pressure head 4 is installed, the mounting post 43 is inserted into the mounting hole 33, and the limiting pin 31 is inserted into the limiting hole 41 at the same time, so as to achieve precise positioning of the pressure head 4.

[0039] In actual operation, when installing the pressure head 4, simply align the mounting post 43 of the pressure head 4 with the mounting hole 33 of the base 3 and insert it. The mounting post 43 pushes the first slope 22 of the locking block 21, causing the slider 24 to compress the spring 27 and slide it into the mounting groove 32. When the locking groove 42 on the mounting post 43 is aligned with the locking block 21, the compression spring 27 returns to its original position and pushes the slider 24, causing the locking block 21 to be engaged in the locking groove 42. At the same time, the limiting pin 31 is inserted into the limiting hole 41, completing the quick installation of the pressure head 4. When disassembling the pressure head 4, press the end of the slider 24 extending to the outside of the base 3 into the mounting groove 32. The compression spring 27 is compressed, and the locking block 21 is moved out of the locking groove 42. The mounting post 43 can then be pulled out of the mounting hole 33, achieving quick disassembly of the pressure head 4.

Claims

1. A quick-change structure for pad printing heads, characterized in that, include: The mounting base includes a cover plate (1), a base (3), and two locking components (2); The cover plate (1) is fixed to the upper end of the base (3); the base (3) is provided with a mounting hole (33), which runs through the base (3) from top to bottom; the two locking components (2) are symmetrically distributed about the axis of the mounting hole (33) at 180°; the upper part of the base (3) is provided with a mounting groove (32) that is compatible with the locking component (2); there are two mounting grooves (32) corresponding to the two locking components (2), and the two mounting grooves (32) are located on both sides of the mounting hole (33) and communicate with the mounting hole (33); one side of the base (3) is provided with an opening (34) that communicates with the mounting groove (32); the locking component (2) is slidably disposed in the mounting groove (32), and one end of the locking component (2) passes through the opening (34) and extends to the outside of the base (3); The pressure head (4) is located below the base (3); the upper end of the pressure head (4) is fixedly provided with a mounting post (43); the mounting post (43) is inserted into the mounting hole (33) and locked in the mounting hole (33) by two locking components (2).

2. The quick-change structure for pad printing heads as described in claim 1, characterized in that, The locking assembly (2) includes a slider (24) and a compression spring (27); the slider (24) is slidably installed in the mounting groove (32), and one end of the slider (24) passes through the opening (34) and extends to the outside of the base (3); the spring is placed in the mounting groove (32), with one end abutting against the base (3) and the other end abutting against the slider (24); a locking block (21) is fixedly provided on the side of the slider (24) near the mounting hole (33), and the locking block (21) is located in the mounting groove (32); the mounting post (43) is provided with a locking groove (42) that matches the locking block (21); the compression spring (27) pushes the slider (24) to slide outward from the opening (34) of the base (3), so that the locking block (21) is engaged in the locking groove (42), and the mounting post (43) is fixed in the mounting hole (33).

3. The quick-change structure for pad printing pressure heads as described in claim 2, characterized in that, The upper surface of the locking block (21) is provided with a first slope (22); the locking groove (42) of the mounting column (43) is provided with a second slope that is adapted to the first slope (22); the first slope (22) and the second slope slide together.

4. The quick-change structure for pad printing heads as described in claim 2, characterized in that, The locking assembly (2) has two compression springs (27); the two compression springs (27) are arranged parallel to each other in the mounting groove (32).

5. The quick-change structure for pad printing heads as described in claim 2, characterized in that, A limit block (25) is fixedly installed on the lower end face of the portion of the slider (24) extending out to the outside of the opening (34).

6. The quick-change structure for pad printing heads as described in claim 2, characterized in that, The slider (24) is provided with a guide hole (23); the mounting groove (32) is provided with a guide rod (26), which is fixed on the base (3) and slidably disposed in the guide hole (23).

7. The quick-change structure for pad printing heads as described in claim 1, characterized in that, A limiting pin (31) is fixedly provided on the lower end surface of the base (3); a limiting hole (41) adapted to the limiting pin (31) is provided on the upper part of the pressure head (4), and the limiting pin (31) is inserted into the limiting hole (41).

Images