Pad printing jig

Abstract

The utility model relates to a pad printing technical field provides a kind of pad printing fixture, including shell support block, limit fixed block and limit moving block, shell support block is equipped with the profiled curved surface matched with the curved surface of the shell to be pad printed, and the shell to be pad printed is placed on shell support block and is attached with profiled curved surface;Limit fixed block and limit moving block are respectively set in the opposite ends of shell support block, for clamping the shell to be pad printed in the width direction of shell support block, limit fixed block is fixedly connected with shell support block, limit moving block is slidably connected with shell support block along the width direction of shell support block.The pad printing fixture of the utility model can reduce the appearance surface scratch risk of the shell to be pad printed, and has higher stability and adaptability.

Description

Technical Field

[0001] This utility model relates to the field of pad printing technology, and in particular to a pad printing fixture. Background Technology

[0002] In the pad printing process for pulse oximeter housings, operators face a series of challenges. First, due to the irregular shape of the housing, traditional fixing methods often fail to ensure its stability during the pad printing process, causing the housing to wobble. This not only affects printing accuracy but also increases operational difficulty. Second, during handling and pad printing, the housing is easily subjected to friction and pressure from external forces, resulting in scratches on the surface. These scratches not only affect the product's aesthetics but may also reduce its market value. Furthermore, due to the shrinkage rate of injection molding, the dimensions of pulse oximeter housings often have a certain degree of error. This leads to inconsistent tightness when using the same fixture for pad printing on housings of different sizes. Overly tight fixing may cause housing deformation or damage, while overly loose fixing cannot guarantee printing accuracy and stability.

[0003] To address the aforementioned issues, existing technologies typically employ a method of limiting the outer contour of the pulse oximeter's housing. However, this approach has revealed several shortcomings in practical applications, such as a high risk of scratches on the exterior surface and wobbling due to the lack of support on the bottom.

[0004] Therefore, it is necessary to develop a new type of pad printing fixture to solve the problems existing in the prior art. Utility Model Content

[0005] This utility model provides a pad printing fixture to solve at least one of the above-mentioned technical problems.

[0006] This utility model provides a pad printing fixture, including a housing support block, a limiting and fixing block and a limiting and moving block. The housing support block is provided with a contoured curved surface that matches the curved surface of the housing to be pad printed. The housing to be pad printed is placed on the housing support block and fits against the contoured curved surface.

[0007] The limiting fixing block and the limiting moving block are respectively disposed at opposite ends of the housing support block, and are used to clamp the housing to be transferred in the width direction of the housing support block. The limiting fixing block is fixedly connected to the housing support block, and the limiting moving block is slidably connected to the housing support block along the width direction of the housing support block.

[0008] Optionally, the contact surfaces of the housing support block, the limiting fixing block, and the limiting moving block with the housing to be printed are all elastic support surfaces made of acrylonitrile-butadiene-styrene copolymer board.

[0009] Optionally, the housing support block is provided with a first fixing groove and a second fixing groove on both sides of the contoured curved surface, and the limiting fixing block and the limiting moving block are detachably installed on the first fixing groove and the second fixing groove respectively by fasteners.

[0010] Optionally, the limiting moving block is provided with an elongated hole that extends along the width direction of the housing support block. The fastener passes through the elongated hole, and the relative distance between the limiting fixing block and the limiting moving block is adjusted by adjusting the position of the fastener in the elongated hole.

[0011] Optionally, a clearance groove is provided between the second fixing groove and the contoured surface, and the limiting moving block adjusts the relative distance between the limiting fixing block and the limiting moving block by moving between the second fixing groove and the clearance groove.

[0012] Optionally, the first fixing groove and the second fixing groove are respectively provided with a first threaded hole and a second threaded hole, the limiting fixing block is installed in the first threaded hole by a first screw, and the limiting moving block is installed in the second threaded hole by a second screw.

[0013] Optionally, the diameter of the oblong hole is larger than the diameter of the second threaded hole.

[0014] Optionally, the limiting and fixing block has an L-shaped structure, and the side of the limiting and fixing block facing the limiting and moving block is provided with a first concave surface for limiting the first mounting surface of the shell to be transferred.

[0015] Optionally, the limiting moving block has a second concave surface on the side facing the limiting fixing block, which is used to limit the second mounting surface of the shell to be transferred.

[0016] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] This utility model's pad printing fixture, by setting a housing support block at the bottom of the fixture and setting a contoured curved surface on the housing support block that matches the curved surface of the housing to be printed, can stably place the bottom of the housing to be printed on the contoured curved surface of the housing support block, making it less prone to shaking and reducing the risk of scratches on the appearance surface of the housing to be printed. Furthermore, by sliding the limiting moving block, the distance between the limiting fixing block and the limiting moving block can be adaptively adjusted according to the size of the fixture, avoiding the fixture clamping the housing to be printed too tightly or too loosely, which can further reduce the risk of scratches on the appearance surface of the housing to be printed and improve the stability of the fixture. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the pad printing fixture provided by this utility model.

[0020] Figure 2 A schematic diagram of the structure of the housing support block of the pad printing fixture provided by this utility model.

[0021] Figure 3 This is a schematic diagram of the limiting moving block of the pad printing fixture provided by this utility model.

[0022] Figure 4 This is a schematic diagram of the limiting and fixing block of the pad printing fixture provided by this utility model.

[0023] Figure label:

[0024] 1. Housing support block; 2. Limiting and fixing block; 3. Limiting and moving block; 4. Housing to be transferred; 101. Contoured curved surface; 102. First fixing groove; 103. Second fixing groove; 104. Clearance groove; 1021. First threaded hole; 1031. Second threaded hole; 201. First concave surface; 301. Oblong hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Please see Figure 1 and Figure 2This utility model provides a pad printing fixture that can be applied to the pad printing process of a pulse oximeter housing. The pad printing fixture includes a housing support block 1, a limiting and fixing block 2, and a limiting and moving block 3. The housing support block 1 has a contoured curved surface 101 that matches the curved surface of the housing 4 to be pad printed (such as a pulse oximeter housing). The housing 4 to be pad printed is placed on the housing support block 1 and fits against the contoured curved surface 101. The limiting and fixing block 2 and the limiting and moving block 3 are respectively disposed at opposite ends of the housing support block 1 and are used to clamp the housing 4 to be pad printed in the width direction of the housing support block 1. The limiting and fixing block 2 is fixedly connected to the housing support block 1, and the limiting and moving block 3 is slidably connected to the housing support block 1 in the width direction of the housing support block 1.

[0027] This invention provides a housing support block 1 at the bottom of the pad printing fixture to support the bottom of the housing 4 to be printed, preventing the housing 4 from shaking and avoiding scratches on its surface. In particular, the contoured curved surface 101 design of the housing support block 1 allows the curved surface of the housing 4 to fit tightly against the housing support block 1, improving the support stability of the housing support block 1 and further preventing shaking. Furthermore, by sliding the limiting moving block 3 onto the housing support block 1, the distance between the limiting fixing block 2 and the limiting moving block 3 can be adjusted adaptively according to the size of the fixture, preventing the fixture from clamping the housing 4 too tightly or too loosely, further reducing the risk of scratches on the surface of the housing 4, improving the stability of the fixture, and thus ensuring the accuracy and stability of the pad printing.

[0028] Furthermore, in this embodiment, the contact surfaces of the housing support block 1, the limiting fixing block 2, and the limiting moving block 3 with the housing 4 to be printed are all elastic support surfaces made of acrylonitrile-butadiene-styrene copolymer (ABS) board. The elastic support surface can better buffer the contact stress between the printing jig and the housing 4 to be printed, and can avoid scratching the appearance surface of the housing 4 to be printed.

[0029] In one embodiment, the housing support block 1, the limiting and fixing block 2, and the limiting and moving block 3 are all made of ABS board, and the all-round protection can greatly reduce the risk of scratches on the appearance surface of the housing 4 to be printed.

[0030] like Figure 2 As shown, the housing support block 1 has a first fixing groove 102 and a second fixing groove 103 on both sides of the contoured curved surface 101. The limiting fixing block 2 and the limiting moving block 3 are detachably installed on the first fixing groove 102 and the second fixing groove 103 respectively by fasteners.

[0031] Furthermore, the first fixing groove 102 and the second fixing groove 103 are respectively provided with a first threaded hole 1021 and a second threaded hole 1031. The limiting fixing block 2 is installed in the first threaded hole 1021 by a first screw, and the limiting moving block 3 is installed in the second threaded hole 1031 by a second screw.

[0032] like Figure 3 As shown, the limiting moving block 3 has an elongated hole 301 that extends along the width direction of the housing support block 1. A fastener (second screw) passes through the elongated hole 301. The relative distance between the limiting fixing block 2 and the limiting moving block 3 is adjusted by adjusting the position of the second screw in the elongated hole 301. Specifically, the installation position of the second screw on the housing support block 1 remains unchanged. When moving the limiting moving block 3, the second screw is first loosened. The position of the limiting moving block 3 is changed by sliding it along the width direction of the housing support block 1. After adjusting the position, the second screw is tightened.

[0033] Furthermore, the diameter of the oblong hole 301 is larger than the diameter of the second threaded hole 1031.

[0034] In one embodiment, a clearance groove 104 is provided between the second fixing groove 103 and the contoured surface 101, and the limiting moving block 3 adjusts the relative distance between the limiting fixing block 2 and the limiting moving block 3 by moving between the second fixing groove 103 and the clearance groove 104.

[0035] like Figure 3 and Figure 4 As shown, the limiting and fixing block 2 has an L-shaped structure. The side of the limiting and fixing block 2 facing the limiting and moving block 3 has a first concave surface 201, used to limit the first mounting surface (non-appearance surface) of the housing 4 to be transferred. The side of the limiting and moving block 3 facing the limiting and fixing block 2 has a second concave surface, used to limit the second mounting surface (non-appearance surface) of the housing 4 to be transferred. By setting the limiting point on the non-appearance surface of the housing 4 to be transferred, the appearance surface of the housing 4 to be transferred can be further protected.

[0036] In the pad printing process for the pulse oximeter housing, the aforementioned pad printing fixture is placed on the pad printing base, the position of the pattern to be printed is adjusted, and then fixed with hot melt adhesive. The ink cup of the pad printing machine is filled with ink, and the doctor blade evenly spreads the ink onto the gravure printing plate, ensuring the gravure pattern area is fully filled with ink. The pad printing head descends to contact the printing plate, and through compression deformation, absorbs the ink from the printing plate's recesses onto the surface of the pad. Then, the pad printing head moves above the pulse oximeter housing to be printed, and descends to transfer the ink on the pad to the surface of the pulse oximeter housing, forming the desired pattern. After printing is complete, the pad returns to its initial position.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pad printing fixture, characterized in that, It includes a housing support block, a limiting and fixing block, and a limiting and moving block. The housing support block is provided with a contoured curved surface that matches the curved surface of the housing to be transferred. The housing to be transferred is placed on the housing support block and fits against the contoured curved surface. The limiting fixing block and the limiting moving block are respectively disposed at opposite ends of the housing support block, and are used to clamp the housing to be transferred in the width direction of the housing support block. The limiting fixing block is fixedly connected to the housing support block, and the limiting moving block is slidably connected to the housing support block along the width direction of the housing support block.

2. The pad printing fixture according to claim 1, characterized in that, The contact surfaces of the housing support block, the limiting fixing block, and the limiting moving block with the housing to be printed are all elastic support surfaces made of acrylonitrile-butadiene-styrene copolymer board.

3. The pad printing fixture according to claim 1, characterized in that, The housing support block is provided with a first fixing groove and a second fixing groove on both sides of the contoured curved surface, and the limiting fixing block and the limiting moving block are respectively detachably installed on the first fixing groove and the second fixing groove by fasteners.

4. The pad printing fixture according to claim 3, characterized in that, The limiting moving block is provided with an elongated hole that extends along the width direction of the housing support block. The fastener passes through the elongated hole, and the relative distance between the limiting fixing block and the limiting moving block is adjusted by adjusting the position of the fastener in the elongated hole.

5. The pad printing fixture according to claim 4, characterized in that, An avoidance groove is provided between the second fixing groove and the contoured surface. The limiting moving block adjusts the relative distance between the limiting fixing block and the limiting moving block by moving between the second fixing groove and the avoidance groove.

6. The pad printing fixture according to claim 4, characterized in that, The first fixing groove and the second fixing groove are respectively provided with a first threaded hole and a second threaded hole. The limiting fixing block is installed in the first threaded hole by a first screw, and the limiting moving block is installed in the second threaded hole by a second screw.

7. The pad printing fixture according to claim 6, characterized in that, The diameter of the oblong hole is larger than the diameter of the second threaded hole.

8. The pad printing fixture according to claim 1, characterized in that, The limiting and fixing block has an L-shaped structure, and a first concave surface is provided on the side of the limiting and fixing block facing the limiting and moving block, which is used to limit the first mounting surface of the shell to be transferred.

9. The pad printing fixture according to claim 8, characterized in that, The limiting moving block has a second concave surface on the side facing the limiting fixed block, which is used to limit the second mounting surface of the shell to be transferred.

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