Sample positioning mechanism for film scratching instrument

Abstract

The utility model provides a sample positioning mechanism for a film scratching instrument. The sample positioning mechanism comprises two sample positioning devices, the two sample positioning devices are symmetrically arranged on the left and right sides of the material carrying table, a mounting seat is arranged on the lower end surface of the material carrying table, and the bottoms of the sample positioning devices are detachably connected with the mounting seat; the sample positioning device comprises a mounting structure, a supporting frame, a guide seat, a sliding adjusting structure, a sample pressing plate, two pressing plate fixing structures and a plurality of elastic pre-tightening mechanisms. According to the sample positioning mechanism for the film scratching instrument, the problem that the scratch depth or the coating thickness is inconsistent due to the fact that the stability of a positioning mechanism for fixing a sample is poor and the contact pressure between a probe or a spray head of a film scratching tool and the sample fluctuates in the prior art is solved.

Description

Technical Field

[0001] This utility model belongs to the field of film-drawing instrument technology, and in particular relates to a sample positioning mechanism for a film-drawing instrument. Background Technology

[0002] A scribing apparatus is an experimental device used for precise scratching, coating, or patterning of material surfaces, widely applied in materials science, biomedicine (such as biochip fabrication), and microelectronics. Its core function is to form thin films or microchannels with specific structures on substrate materials (such as glass, silicon wafers, and polymer films) using mechanical, laser, or fluid methods. Low-end or basic scribing apparatuses typically rely on manual adjustment or simple mechanical clamps for sample fixation. Due to the poor stability of the positioning mechanism in these technologies, fluctuations in the contact pressure between the scribing tool's probe or nozzle and the sample lead to inconsistent scratch depths or coating thicknesses. Summary of the Invention

[0003] In view of this, the present invention aims to at least partially solve one of the related technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A sample positioning mechanism for a film-cutting apparatus includes two sample positioning devices.

[0006] Two sample positioning devices are symmetrically arranged on the left and right sides of the material platform. The lower end face of the material platform is provided with a mounting base, and the bottom of the sample positioning device is detachably connected to the mounting base.

[0007] The sample positioning device includes an installation structure, a support frame, a guide seat, a sliding adjustment structure, a sample pressure plate, two pressure plate fixing structures, and multiple elastic pre-tightening mechanisms. The bottom of the support frame is detachably connected to the installation seat through the installation structure. The guide seat is provided on the top of the support frame. The sliding adjustment structure is provided on the guide seat. Multiple elastic pre-tightening mechanisms are arranged on the sliding adjustment structure. The top of each elastic pre-tightening mechanism is connected to the sliding adjustment structure, and the bottom of each elastic pre-tightening mechanism is connected to the sample pressure plate. The elastic pre-tightening mechanism is located inside the support frame.

[0008] Two pressure plate fixing structures are symmetrically arranged at the front and rear ends of the sample pressure plate, and the pressure plate fixing structures are used to press the sample pressure plate.

[0009] Furthermore, the sliding adjustment structure includes a fixed plate, multiple slide rods, and multiple locking devices. The multiple slide rods are arranged on the guide seat, and the slide rods slide in cooperation with the guide seat. The inner end of the slide rod is fixed to the fixed plate, the fixed plate is connected to the top of the elastic pre-tightening mechanism, and the slide rod is connected and fixed to the guide seat through a locking device.

[0010] Furthermore, the locking device is a tightening screw, which is threaded into the guide seat, and the end of the tightening screw is used to tighten the slide rod.

[0011] Furthermore, the elastic pre-tightening mechanism includes a fixed frame, a slide, a guide rod, a pre-tightening spring, a top plate, and a limiting block. The fixed frame is fixedly connected to the fixed plate. A groove is provided in the middle of the fixed frame. One end of the guide rod is located at the top of the groove, and the other end of the guide rod passes through the groove. The top plate is slidably engaged with the guide rod. The pre-tightening spring is located on the guide rod and is used to press the top plate. The top plate is located at the top of the slide. The bottom of the slide is fixedly connected to the sample pressure plate. The limiting block is located at the bottom of the guide rod.

[0012] Furthermore, the sample pressure plate has a C-shaped cross-section, the upper end face of the sample pressure plate is fixedly connected to the bottom of the slide, and the lower end face of the sample pressure plate is provided with an anti-slip pad.

[0013] Furthermore, the pressure plate fixing structure includes a fixing clamp and a first handwheel screw. The fixing clamp has a C-shaped structure. The inner side of the fixing clamp is used to clamp the end of the material platform. The top of the fixing clamp is tightened against the sample pressure plate by the first handwheel screw.

[0014] Furthermore, the lower part of the support frame is provided with a stepped surface that can cooperate with the side edge of the material carrier.

[0015] Furthermore, the mounting structure includes a plurality of second handwheel screws, which are arranged at the bottom of the support frame. The second handwheel screws are used to connect and fix the support frame to the mounting base.

[0016] Compared with the prior art, the sample positioning mechanism for a film-drawing apparatus described in this utility model has the following advantages:

[0017] 1. Multiple sliding rods are arranged in parallel on the guide seat, allowing independent lateral adjustment of the position of each elastic pre-tightening mechanism. By loosening the tightening screws, the sliding rods can be pushed to move the fixing plate and sample pressure plate laterally, meeting the clamping requirements of samples of different widths. The guide rods and pre-tightening springs in the elastic pre-tightening mechanism allow for fine-tuning of the sample pressure plate's height in the longitudinal direction, automatically compensating for sample thickness deviations. This avoids excessive local clamping force or loosening due to uneven sample thickness.

[0018] 2. The elastic pre-tightening mechanism, through the combination of spring mechanics and a guiding structure, achieves adaptive adjustment and uniform pressure distribution in sample clamping. The pre-tightening spring automatically adjusts its compression according to the sample thickness, ensuring that the sample clamping plate always maintains a constant pressure against the sample surface, eliminating the need for manual adjustment of the pre-tightening force. It is compatible with samples of varying thicknesses, avoiding repeated clamp adjustments. The guide rod and slide groove work together to ensure that the clamping plate moves only in the vertical direction, preventing localized stress concentration caused by lateral offset.

[0019] 3. The pressure plate fixing structure ensures stable fixation of the sample pressure plate to the material through quick locking, while also taking into account ease of operation. The first handwheel screw directly tightens the sample pressure plate, and the pressure plate can be fixed or loosened with a single hand rotation, resulting in a short operation time. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of a sample positioning mechanism for a film-drawing instrument according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the combined structure of the support frame and mounting base described in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the sliding adjustment structure described in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the elastic pre-tightening mechanism structure described in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the pressure plate fixing structure according to an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Material carrier; 110. Mounting base; 200. Support frame; 210. Guide seat; 220. Second handwheel screw; 300. Slide rod; 310. Locking device; 400. Fixing plate; 500. Elastic pre-tightening mechanism; 510. Fixing frame; 520. Slide; 521. Top plate; 530. Pre-tightening spring; 540. Limiting block; 610. Sample pressure plate; 620. Pressure plate fixing structure. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] A sample positioning mechanism for a film scribing apparatus, such as Figure 1 As shown, it includes two sample positioning devices; the two sample positioning devices are symmetrically arranged on the left and right sides of the material platform 100, and the lower end face of the material platform 100 is provided with a mounting base 110, and the bottom of the sample positioning device is detachably connected to the mounting base 110.

[0033] The sample positioning device includes an installation structure, a support frame 200, a guide seat 210, a sliding adjustment structure, a sample pressure plate 610, two pressure plate fixing structures 620, and multiple elastic pre-tightening mechanisms 500. The bottom of the support frame 200 is detachably connected to the installation seat 110 through the installation structure. The guide seat 210 is provided on the top of the support frame 200. The sliding adjustment structure is provided on the guide seat 210. Multiple elastic pre-tightening mechanisms 500 are arranged in the sliding adjustment structure. The top of the elastic pre-tightening mechanism 500 is connected to the sliding adjustment structure, and the bottom of the elastic pre-tightening mechanism 500 is connected to the sample pressure plate 610. The elastic pre-tightening mechanism 500 is located inside the support frame 200. The two pressure plate fixing structures 620 are symmetrically arranged at the front and rear ends of the sample pressure plate 610. The pressure plate fixing structures 620 are used to press the sample pressure plate 610.

[0034] like Figure 3 As shown, the sliding adjustment structure includes a fixed plate 400, multiple slide rods 300, and multiple locking devices 310. The slide rods 300 are arranged on the guide seat 210, slidingly engaging with the guide seat 210. The inner ends of the slide rods 300 are welded to the fixed plate 400. The fixed plate 400 is connected to the top of the elastic pre-tightening mechanism 500. The slide rods 300 are connected and fixed to the guide seat 210 via a locking device 310. The locking device 310 is a tightening screw, threaded into the guide seat 210, with its end used to tighten the slide rod 300. The multiple slide rods 300 are arranged parallel to each other on the guide seat 210, allowing independent lateral adjustment of the position of each elastic pre-tightening mechanism 500. By loosening the tightening screw, the slide rods 300 can be pushed to move the fixed plate 400 and the sample pressure plate 610 laterally, meeting the clamping requirements of samples of different widths. The guide rod and preload spring 530 in the elastic preload mechanism 500 allow the sample pressure plate 610 to be finely adjusted in the longitudinal direction, automatically compensating for sample thickness deviations. This avoids excessive local clamping force or loosening due to uneven sample thickness.

[0035] like Figure 4As shown, the elastic pre-tensioning mechanism 500 includes a fixed frame 510, a slide 520, a guide rod, a pre-tensioning spring 530, a top plate 521, and a limiting block 540. The fixed frame 510 is welded to the fixed plate 400. A groove is provided in the middle of the fixed frame 510. One end of the guide rod is set at the top of the groove, and the other end of the guide rod passes through the groove. The top plate 521 is slidably engaged with the guide rod. The pre-tensioning spring 530 is set on the guide rod and is used to press the top plate 521. The top plate 521 is set on the top of the slide 520. The bottom of the slide 520 is welded to the sample pressure plate 610. The limiting block 540 is set at the bottom of the guide rod. The sample pressure plate 610 has a C-shaped cross-section. The upper end face of the sample pressure plate 610 is welded to the bottom of the slide 520, and the lower end face of the sample pressure plate 610 is provided with an anti-slip pad. The elastic pre-tightening mechanism 500, through the combination of spring mechanics and a guiding structure, achieves adaptive adjustment and uniform pressure distribution in sample clamping. The pre-tightening spring 530 automatically adjusts its compression according to the sample thickness, ensuring that the sample pressure plate 610 always maintains a constant pressure against the sample surface, eliminating the need for manual adjustment of the pre-tightening force. It is compatible with samples of varying thicknesses, avoiding repeated clamp adjustments. The guide rod and slide groove work together to ensure that the pressure plate moves only in the vertical direction, preventing localized stress concentration caused by lateral offset.

[0036] The pressure plate fixing structure 620 includes a fixing clamp and a first handwheel screw. The fixing clamp has a C-shaped structure, and its inner side is used to lock onto the end of the material platform 100. The top of the fixing clamp is tightened to the sample pressure plate 610 by the first handwheel screw. The pressure plate fixing structure 620 ensures the stable fixation of the sample pressure plate 610 to the material through quick locking, while also taking into account ease of operation. The sample pressure plate 610 is directly tightened by the first handwheel screw, and the pressure plate can be fixed or released with a single hand rotation, resulting in a short operation time.

[0037] The lower part of the support frame 200 is provided with a stepped surface that can mate with the side edge of the material carrier 100. The mounting structure is located below the stepped surface. The mounting structure includes a plurality of second handwheel screws 220, which are arranged at the bottom of the support frame 200. The second handwheel screws 220 are used to connect and fix the support frame 200 to the mounting base 110.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sample positioning mechanism for a scribe tester, characterized by: It includes two sample positioning devices; the two sample positioning devices are symmetrically arranged on the left and right sides of the material platform (100), and the lower end face of the material platform (100) is provided with a mounting base (110). The bottom of the sample positioning device is detachably connected to the mounting base (110). The sample positioning device includes an installation structure, a support frame (200), a guide seat (210), a sliding adjustment structure, a sample pressure plate (610), two pressure plate fixing structures (620), and multiple elastic pre-tightening mechanisms (500). The bottom of the support frame (200) is detachably connected to the installation seat (110) through the installation structure. The guide seat (210) is provided on the top of the support frame (200). The sliding adjustment structure is provided on the guide seat (210). Multiple elastic pre-tightening mechanisms (500) are arranged on the sliding adjustment structure. The top of the elastic pre-tightening mechanism (500) is connected to the sliding adjustment structure. The bottom of the elastic pre-tightening mechanism (500) is connected to the sample pressure plate (610). The elastic pre-tightening mechanism (500) is located inside the support frame (200). Two pressure plate fixing structures (620) are symmetrically arranged at the front and rear ends of the sample pressure plate (610), and the pressure plate fixing structures (620) are used to press the sample pressure plate (610).

2. A sample positioning mechanism for a scribe tester according to claim 1, wherein: The sliding adjustment structure includes a fixed plate (400), multiple slide rods (300) and multiple locking devices (310). The multiple slide rods (300) are arranged on the guide seat (210). The slide rods (300) are slidably engaged with the guide seat (210). The inner end of the slide rod (300) is fixedly connected to the fixed plate (400). The fixed plate (400) is connected to the top of the elastic pre-tightening mechanism (500). The slide rod (300) is connected and fixed to the guide seat (210) through a locking device (310).

3. A sample positioning mechanism for a scribe tester as defined in claim 2, wherein: The locking device (310) is a tightening screw, which is threadedly engaged with the guide seat (210), and the end of the tightening screw is used to tighten the slide rod (300).

4. A sample positioning mechanism for a scribe tester as defined in claim 2, wherein: The elastic pre-tightening mechanism (500) includes a fixed frame (510), a slide (520), a guide rod, a pre-tightening spring (530), a top plate (521), and a limiting block (540). The fixed frame (510) is fixedly connected to the fixed plate (400). The fixed frame (510) has a groove in the middle. One end of the guide rod is located at the top of the groove, and the other end of the guide rod passes through the groove. The top plate (521) is slidably engaged with the guide rod. The pre-tightening spring (530) is located on the guide rod and is used to press the top plate (521). The top plate (521) is located at the top of the slide (520). The bottom of the slide (520) is fixedly connected to the sample pressure plate (610). The limiting block (540) is located at the bottom of the guide rod.

5. A sample positioning mechanism for a film-drawing apparatus according to claim 4, characterized in that: The sample pressure plate (610) has a C-shaped cross section. The upper end face of the sample pressure plate (610) is fixed to the bottom of the slide (520). The lower end face of the sample pressure plate (610) is provided with an anti-slip pad.

6. A sample positioning mechanism for a scribe marker as defined in claim 5, wherein: The pressure plate fixing structure (620) includes a fixing clamp and a first handwheel screw. The fixing clamp is a C-shaped structure. The inner side of the fixing clamp is used to clamp the end of the material platform (100). The top of the fixing clamp is pressed against the sample pressure plate (610) by the first handwheel screw.

7. A sample positioning mechanism for a scribe marker according to any one of claims 1 to 6, wherein: The lower part of the support frame (200) is provided with a stepped surface that can cooperate with the side edge of the material carrier (100).

8. A sample positioning mechanism for a scribe marker as defined in claim 7, wherein: The mounting structure includes a plurality of second handwheel screws (220), which are arranged at the bottom of the support frame (200). The second handwheel screws (220) are used to connect and fix the support frame (200) and the mounting base (110).

Images