A pad printing clamp to prevent deformation of the pad printing head

Abstract

This utility model discloses a pad printing fixture for preventing deformation of the pad printing head. The fixture body includes a fixture body with mounting holes for fixing it to a worktable. The fixture body also includes a limiting protrusion adapted to a switch housing, a filling protrusion, and several clearance holes. This utility model features a simple structure, low cost, high ease of use, and good flexibility. The limiting protrusion and clearance holes on the fixture body enable quick assembly and disassembly of parts with high precision. The added filling protrusion fills the gaps in the switch housing, reducing the deformation of the pad printing head during pad printing and preventing high-frequency deformation and compression that could lead to cracks and reduced lifespan.

Description

Technical Field

[0001] This utility model relates to a pad printing fixture for preventing deformation of the pad printing pad, and belongs to the field of fixture technology. Background Technology

[0002] Pad printing technology uses a silicone pad to transfer patterns from a steel plate to the surface of an irregular workpiece, and is widely used in precision industries such as electronics, medical devices, switches, and toys. Its core component, the pad printing head (silicone head), is prone to elastic deformation under pressure, directly affecting printing accuracy.

[0003] One of the main reasons for silicone rubber tip deformation is that traditional clamps do not provide sufficient support for the tip, leading to plastic deformation (such as collapse or eccentricity) under high-frequency pressure. Ordinary silicone rubber tips have poor fatigue resistance (e.g., the Shore A 20° tip has a permanent deformation rate ≥8% after 5000 printing cycles). In existing switch housings, due to a notch in the center, the tip is suspended relative to the notch during pattern printing at the edge, making it highly susceptible to deformation. Deformation exceeding 0.1mm results in blurred edges and a 15%-20% decrease in yield. Furthermore, frequent tip replacements increase labor and material costs. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a pad printing fixture that prevents deformation of the pad printing head, so as to at least solve the problems mentioned in the background art.

[0005] The objective of this utility model is achieved through the following technical solution: A pad printing fixture for preventing deformation of the pad printing pad includes a fixture body, which has mounting holes for fixing the fixture body to a worktable. The fixture body also has a limiting protrusion, a filling protrusion, and several clearance holes that are adapted to the switch housing.

[0006] Furthermore, the limiting protrusion is a first arc-shaped structure adapted to the inner wall of the switch housing.

[0007] Furthermore, the filling protrusion is a second arc-shaped structure adapted to the notch on the switch housing, and the top surface of the second arc-shaped structure is flush with the upper surface of the switch housing.

[0008] Furthermore, the fixture body, the limiting protrusion, and the filling protrusion are integrally formed.

[0009] Furthermore, the integrally molded structure is made of plastic.

[0010] Furthermore, the limiting protrusion and the filling protrusion are detachably connected to the fixture body, and several strip-shaped clearance grooves are provided on the fixture body.

[0011] Furthermore, the limiting protrusion and the filling protrusion are provided in various specifications according to different switch housings.

[0012] Furthermore, the limiting protrusion and the filling protrusion are detachably connected to the fixture body via a magnetic structure, connecting screws, or a snap-fit ​​structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model features a simple structure, low cost, high ease of use, and good flexibility. The limiting protrusions and clearance holes on the fixture body enable quick assembly and disassembly of parts with high precision. Simultaneously, the added filling protrusion fills the gap in the switch housing, reducing the deformation of the pad printing head during pad printing and preventing high-frequency deformation and compression that could lead to cracks and reduced lifespan. Furthermore, the limiting protrusions and filling protrusions are available in various specifications, making them suitable for clamping parts of various sizes and demonstrating good adaptability.

[0014] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of the pad printing fixture for preventing deformation of the pad printing head provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the structure of the pad printing fixture for preventing deformation of the pad printing head provided in Embodiment 2 of this utility model; Figure 3 This is a schematic diagram of the structure of the pad printing fixture for preventing deformation of the pad printing head provided in Embodiment 4 of this utility model.

[0016] In the diagram: 1. Fixture body; 2. Mounting hole; 3. Limiting protrusion; 4. Filling protrusion; 5. Clearance hole; 6. Strip clearance groove; 7. Magnetic suction structure; 8. Locking block. Detailed Implementation

[0017] 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 scope of protection of the present utility model.

[0018] Example 1 like Figure 1 As shown, the first embodiment of this utility model provides a pad printing fixture to prevent deformation of the pad printing head, including a fixture body 1. The fixture body 1 is provided with a mounting hole 2 for fixing the fixture body 1 on the worktable. The fixture body 1 is provided with a limiting protrusion 3, a filling protrusion 4 and several clearance holes 5 that are adapted to the switch housing.

[0019] The limiting protrusion 3 is a first arc-shaped structure adapted to the inner wall of the switch housing.

[0020] The filling protrusion 4 is a second arc-shaped structure adapted to the notch on the switch housing, and the top surface of the second arc-shaped structure is flush with the upper surface of the switch housing. When the second arc-shaped structure fills the notch in the switch housing, its top surface is flush with the upper surface of the switch housing. During pad printing, this reduces the deformation of the pad printing head and avoids high-frequency deformation and extrusion of the pad printing head, which can lead to cracks and reduced lifespan.

[0021] The clamp body 1, the limiting protrusion 3, and the filling protrusion 4 are integrally formed structures.

[0022] The one-piece molded structure is made of plastic.

[0023] Example 2 like Figure 2 As shown, based on Embodiment 1, the second embodiment of this utility model provides a pad printing fixture to prevent deformation of the pad printing head. In order to increase the adaptability of the fixture, the limiting protrusion 3 and the filling protrusion 4 are detachably connected to the fixture body 1, and several strip-shaped clearance grooves 6 are provided on the fixture body 1.

[0024] The limiting protrusion 3 and filling protrusion 4 are configured in various specifications according to different switch housings. When performing pad printing on different switch housings, the corresponding limiting protrusion 3 and filling protrusion 4 can be replaced. The strip-shaped clearance groove 6 can realize the clearance function of the fastening structure of different switch housing edges.

[0025] The limiting protrusion 3 and the filling protrusion 4 can be detachably connected to the fixture body 1 via the magnetic attraction structure 7.

[0026] Example 3 Based on embodiment 2, multiple sets of connecting holes can be provided on the fixture body 1 so that the limiting protrusion 3 and the filling protrusion 4 can be detachably connected to the fixture body 1 through connecting screws.

[0027] Example 4 like Figure 3As shown, based on Embodiment 2, the strip-shaped clearance groove 6 is a T-shaped groove. A locking block 8, adapted to the T-shaped groove, is provided at the bottom of the limiting protrusion 3 and the filling protrusion 4, allowing the limiting protrusion 3 and the filling protrusion 4 to be snapped together with the fixture body 1. Specifically, the locking block 8 can be made of rubber, plastic, or other materials, and it is interference-fitted with the T-shaped groove, or an anti-slip structure is provided on the contact surface of the locking block 8 and the T-shaped groove to ensure that the limiting protrusion 3 and the filling protrusion 4 will not move when installed in the T-shaped groove.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to restrict the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments without departing from the technical solution of the present utility model and based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A pad printing fixture for preventing deformation of the pad printing pad, characterized in that, The fixture includes a fixture body (1), which has mounting holes (2) for fixing the fixture body (1) on the worktable. The fixture body (1) also has a limiting protrusion (3), a filling protrusion (4), and several clearance holes (5) that are adapted to the switch housing.

2. The pad printing jig for preventing deformation of a pad according to claim 1, wherein The limiting protrusion (3) is a first arc-shaped structure adapted to the inner wall of the switch housing.

3. The pad printing jig for preventing deformation of a pad according to claim 1, wherein The filling protrusion (4) is a second arc-shaped structure adapted to the notch on the switch housing, and the top surface of the second arc-shaped structure is flush with the upper surface of the switch housing.

4. The pad printing jig for preventing deformation of a pad according to any one of claims 1 to 3, wherein The fixture body (1), the limiting protrusion (3), and the filling protrusion (4) are integrally formed structures.

5. The pad printing jig for preventing deformation of a pad according to claim 4, wherein The one-piece molded structure is made of plastic.

6. The pad printing jig for preventing deformation of a pad according to any one of claims 1 to 3, wherein The limiting protrusion (3) and filling protrusion (4) are detachably connected to the fixture body (1), and several strip-shaped clearance grooves (6) are provided on the fixture body (1).

7. The pad printing jig for preventing deformation of a pad according to claim 6, wherein The limiting protrusion (3) and filling protrusion (4) are configured in various specifications according to different switch housings.

8. The pad printing jig for preventing deformation of a pad according to claim 7, wherein The limiting protrusion (3) and filling protrusion (4) are detachably connected to the fixture body (1) via a magnetic structure (7) or a connecting screw or buckle structure.

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