A laser engraving clamp with self-adaptive positioning structure

Abstract

The utility model discloses a laser carving clamp with self -adaptation positioning structure relates to mechanical processing technical field. It includes bottom plate, positioning base. Positioning base is fixed in bottom plate, the light observation window is embedded in the upper portion of positioning base, the flexible ejection unit includes the shell of positioning base connection, the push rod of shell front end and provides the spring of ejection force, and the adjusting screw is connected with the rear end of shell to adjust spring compression amount. The utility model discloses through spring provides adjustable flexible thrust, and push rod adapts to the product pressure, and effective compensation product size tolerance, realizes reliable and lossless positioning, and transparent observation window is convenient for visual alignment, improves the clamping efficiency, compatibility and reliability of laser carving processing.

Description

Technical Field

[0001] This utility model relates to a laser engraving fixture with an adaptive positioning structure, belonging to the field of machining and laser processing technology. Background Technology

[0002] In laser marking (laser engraving) of products, it is usually necessary to precisely fix the product in a specific position to ensure the positional accuracy of the laser marking. Traditional positioning fixtures are mostly rigid contour-following structures, that is, fixed slots or positioning blocks that are made to perfectly match the shape of the product. Although this structure has high positioning accuracy, it has obvious drawbacks: Poor compatibility: It is only applicable to a single model or products with very small dimensional tolerances. When there are dimensional deviations between product batches, it may cause clamping difficulties or inaccurate positioning.

[0003] Products that are easily damaged: For plastic, ceramic or surface-treated precision parts, rigid interference fit clamping methods can easily cause scratches or extrusion deformation on the product surface.

[0004] Lack of cushioning: Rigid contact can cause products to collide with fixtures during automated loading and unloading or rapid manual operation.

[0005] Therefore, there is an urgent need for a laser engraving positioning fixture that can adapt to certain dimensional tolerances of products, has flexible clamping force, and is easy to observe and adjust. Utility Model Content

[0006] The purpose of this utility model is to solve the following technical problems existing in the present invention: poor compatibility.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A laser engraving fixture with an adaptive positioning structure includes: a base unit for mounting and fixing; and further includes: A clamping unit, mounted on the base unit, is used to provide a continuous, flexible clamping force to the workpiece from the side; and: The observation unit is fixedly mounted on the base unit and located on one side of the clamping direction of the clamping unit. It is made of transparent material and is used to observe the clamping status of the workpiece. The clamping unit includes a force adjustment mechanism for adjusting the magnitude of the flexible clamping force.

[0008] Furthermore, the clamping unit includes a housing, a push rod, and an elastic element; the housing is mounted on the base unit; the push rod is movably disposed within the housing, with its front end used to contact the workpiece; the elastic element is disposed within the housing to provide a forward flexible clamping force to the push rod.

[0009] Furthermore, the force adjustment mechanism is an adjusting screw, which is threaded to the rear end of the housing. The screwing depth is used to change the compression of the elastic element and to adjust the flexible clamping force.

[0010] Furthermore, the front end of the push rod is provided with a guide ramp.

[0011] Furthermore, the base unit includes a base plate and a positioning base; the positioning base is fixed to the base plate, and the clamping unit and the observation unit are installed on the positioning base.

[0012] Furthermore, the observation unit is a light-transmitting observation window, which is interference-fitted into the mounting hole on the upper part of the positioning base.

[0013] Furthermore, the observation unit is made of acrylic or high-transmittance engineering plastic.

[0014] Furthermore, the elastic element is a spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Adaptive flexible positioning: The spring-driven push rod provides continuous flexible clamping force, which can automatically compensate for the product's dimensional deviations within the permissible range, achieving reliable positioning and avoiding clamping defects caused by tolerances in rigid positioning.

[0016] Adjustable clamping force: The spring preload can be easily and precisely adjusted by rotating the adjusting screw, thereby changing the clamping force of the push rod on the product. This ensures stable positioning and prevents damage to precision or fragile products.

[0017] Visual operation: The transparent, light-transmitting observation window allows the operator to see directly whether the product is installed in place and whether the push rod is effectively tightened, greatly improving the accuracy of clamping and the convenience of operation.

[0018] Compact structure and high versatility: The modular design allows for the arrangement of multiple positioning points on the base plate according to the product outline, making it suitable for products of different shapes. The guide ramp design makes product loading and unloading smoother, improving production efficiency.

[0019] High durability: The main components are made of metal and standard parts, with a robust structure and long service life. Attached Figure Description

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 for Figure 2 Sectional view along line AA; In the picture: 1. Base plate; 2. Light-transmitting observation window; 3. Adjusting screw; 4. Push rod; 5. Outer shell; 6. Spring; 7. Positioning base; 8. Product to be laser-engraved. Detailed Implementation

[0021] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings: like Figure 1 As shown, a laser engraving fixture with an adaptive positioning structure in this embodiment mainly consists of a base plate 1, a light-transmitting observation window 2, an adjusting screw 3, a push rod 4, a housing 5, a spring 6, and a positioning base 7.

[0022] The positioning base 7 is vertically fixed to the base plate 1, which is used to install the entire fixture system, by bolts. A stepped hole is provided above the center of the positioning base 7, and a light-transmitting observation window 2 (acrylic in this embodiment) is pressed into the stepped hole by an interference fit to form a transparent window.

[0023] The positioning base 7 has an internal thread at its lower part. The outer casing 5 is cylindrical, and its outer wall has a matching external thread, allowing it to be screwed into the positioning base 7. The push rod 4 is a stepped shaft-shaped part, with its small-diameter end extending from the front end of the outer casing 5, and this front end is machined with a bevel. The spring 6 is fitted onto the rear large-diameter section of the push rod 4 and is placed inside the cavity of the outer casing 5. The adjusting screw 3 is screwed in from the rear end of the outer casing 5, and its front end abuts against the end of the spring 6.

[0024] After assembly, the spring 6 is compressed between the stepped surface of the push rod 4 and the adjusting screw 3, thereby applying a forward thrust to the push rod 4, causing the front bevel of the push rod 4 to protrude slightly from the center hole of the light-transmitting observation window 2.

[0025] Working principle: During use, the product to be laser-engraved is inserted through the center hole of the light-transmitting observation window 2. As the product is pushed downwards into the clamp, the side of the product first contacts the inclined surface at the front end of the push rod 4. Guided by the inclined surface, the product overcomes the pushing force of the spring 6, pressing the push rod 4 backwards. The spring 6 is further compressed, and the resulting reverse elastic force continuously presses the end of the push rod 4 against the side of the product, thereby achieving self-adaptive flexible positioning of the product. The operator can confirm whether the product has been properly positioned through the transparent light-transmitting observation window 2. After laser engraving is completed, the product is removed, and the push rod 4 automatically resets under the action of the spring 6, ready for the next clamping.

[0026] If the clamping force needs to be adjusted, simply use a tool to rotate the adjusting screw 3 to change its screwing depth, thereby adjusting the initial compression of the spring 6 and obtaining the required push rod 4 output force.

[0027] The above are merely specific embodiments of this utility model, but the scope of protection of this invention is not limited thereto. Any transformations or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in this invention should be included within the scope of this invention. Therefore, the scope of protection of this invention should be determined by the scope of the claims.

Claims

1. A laser engraving fixture with an adaptive positioning structure, comprising: The base unit is used for mounting and fixing; characterized in that it further includes: A clamping unit, disposed on the base unit, is used to provide a continuous, flexible clamping force to the workpiece from the side; and: An observation unit is fixedly mounted on the base unit and located on one side of the clamping direction of the clamping unit. It is made of transparent material and is used to observe the clamping status of the workpiece. The clamping unit includes a force adjustment mechanism for adjusting the magnitude of the flexible clamping force.

2. The laser engraving fixture according to claim 1, characterized in that, The clamping unit includes a housing (5), a push rod (4), and an elastic element; the housing (5) is mounted on the base unit; the push rod (4) is movably disposed within the housing (5), and its front end is used to contact the workpiece; the elastic element is disposed within the housing (5) to provide the push rod (4) with a forward flexible clamping force.

3. The laser engraving fixture according to claim 2, characterized in that, The force adjustment mechanism is an adjustment screw (3), which is threaded to the rear end of the outer shell (5). Its screw-in depth is used to change the compression of the elastic element and to adjust the flexible clamping force.

4. The laser engraving fixture according to claim 2 or 3, characterized in that, The front end of the push rod (4) is provided with a guide slope.

5. The laser engraving fixture according to claim 1, characterized in that, The base unit includes a base plate (1) and a positioning base (7); the positioning base (7) is fixed on the base plate (1), and the clamping unit and the observation unit are installed on the positioning base (7).

6. The laser engraving fixture according to claim 5, characterized in that, The observation unit is a light-transmitting observation window (2), which is interference-fitted into the mounting hole on the upper part of the positioning base (7).

7. The laser engraving fixture according to claim 1, characterized in that, The observation unit is made of acrylic or high-transmittance engineering plastic.

8. The laser engraving fixture according to claim 2, characterized in that, The elastic element is a spring (6).

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