Fixing and clamping device for cutting EMC (Electro Magnetic Compatibility) sample

Abstract

The utility model relates to a fixing and clamping device for cutting an EMC (Electro Magnetic Compatibility) sample, belongs to the technical field of sample cutting and fixing, and solves the problem of low test accuracy of a performance test caused by inconsistent cutting sizes of the EMC sample. The fixing and clamping device comprises a fixing frame, a sample clamping piece, a cutting guide piece and a driving screw rod, l-shaped sections are arranged on the fixing frame and the sample clamping piece, and the L-shaped sections face to each other; the sample clamping piece is slidably mounted on the fixing frame, the driving screw rod is rotatably mounted on the fixing frame, and the driving screw rod can drive the sample clamping piece to slide relative to the fixing frame when rotating; when the sample clamping piece slides, the sample to be cut can be clamped or loosened; the cutting guide piece is arranged between the two L-shaped sections and used for positioning the cutting position. Scale marks are arranged on the cutting guide piece and used for marking the cutting size. According to the utility model, the positioning and size control of the EMC sample cutting are realized, and the consistency of the cut sample is ensured.

Description

Technical Field

[0001] This utility model relates to the field of sample cutting and fixing technology, and in particular to a fixing and clamping device for EMC sample cutting. Background Technology

[0002] EMC (Epoxy Molding Compound), a core material in electronic packaging, is a thermosetting composite material with epoxy resin as the matrix and a blend of various functional fillers. Epoxy resin plays an irreplaceable role in protecting electronic components from factors such as moisture, chemical corrosion, and mechanical stress, thus decisively influencing the long-term reliability and stability of electronic devices. Mechanical testing is an indispensable and crucial method for comprehensively and accurately evaluating the material properties of EMC. Through various mechanical tests, such as tensile and bending tests, we can gain a deeper understanding of the performance of EMC under different stress conditions.

[0003] Preparing samples that strictly conform to the dimensional requirements for mechanical testing is the primary prerequisite for ensuring the high accuracy and reliability of these test results. Only with precise sample dimensions can the test data truly reflect the inherent properties of EMC materials, providing a reliable basis for subsequent material research and development, process optimization, and product quality improvement. However, currently, the common method in EMC sample cutting is to manually separate the EMC structure, which is encapsulated in a block shape. While this traditional cutting method achieves the separation of the EMC block structure from an operational perspective, the cutting process relies entirely on manual operation. Significant differences exist in the techniques, force, and cutting speed among different operators. Even when the same operator performs the operation at different times, it is difficult to guarantee consistency in each cut. This uncontrollability of human operation easily leads to uneven dimensions in the cut EMC block structure.

[0004] Uneven cutting dimensions, like introducing an error source into a precision instrument, will be amplified in subsequent testing and analysis. For example, during tensile testing, unevenly sized samples may experience uneven stress, leading to significant deviations in the test data and failing to accurately reflect the true tensile properties of EMC materials. This deviation can not only mislead material research and development but may also cause product quality issues during electronic device manufacturing due to misjudgments of EMC performance. Therefore, a fixing and clamping device for EMC sample cutting is needed to maintain the consistency of EMC sample cutting. Utility Model Content

[0005] Based on the above analysis, the present invention aims to provide a fixing and clamping device for EMC sample cutting, so as to solve the problem of low accuracy of performance testing caused by inconsistent EMC sample cutting dimensions.

[0006] The objective of this utility model is mainly achieved through the following technical solutions:

[0007] A fixing and clamping device for EMC sample cutting includes: a fixing frame, a sample clamping component, a cutting guide component, and a drive screw;

[0008] The upper surface of the fixing frame is provided with a first L-shaped cross section, and the upper part of the sample clamp is provided with a second L-shaped cross section, the second L-shaped cross section being arranged opposite to the first L-shaped cross section;

[0009] The sample clamp is slidably mounted on the fixed frame, and the drive screw is rotatably mounted on the fixed frame. The sample clamp and the drive screw are screwed together. When the drive screw rotates, it can drive the sample clamp to slide relative to the fixed frame. When the sample clamp slides relative to the fixed frame, the second L-shaped cross section and the first L-shaped cross section move closer or further apart, thereby clamping or releasing the sample to be cut. The cutting guide is used to position the cutting position.

[0010] Furthermore, a through rectangular hole is provided at the bottom of the fixture to allow the sample to be cut to pass through.

[0011] Furthermore, L-shaped first sample protection strips and second sample protection strips are respectively installed on the first L-shaped cross-section and the second L-shaped cross-section.

[0012] Furthermore, a T-shaped groove is provided above the fixing frame; a second T-shaped protrusion is provided below the sample holder, and the sample holder is slidably installed in the T-shaped groove through the second T-shaped protrusion.

[0013] Furthermore, a rectangular groove is provided above the fixing frame; a positioning protrusion is provided below the sample holder, and a threaded positioning hole is provided on the positioning protrusion; both the positioning protrusion and the driving screw are located inside the rectangular groove, and the driving screw is threaded into the threaded positioning hole.

[0014] Furthermore, two rectangular slots are arranged side by side on the fixing frame; two drive screws are provided, namely a first drive screw and a second drive screw, and correspondingly, two threaded positioning holes are provided on the sample clamping component.

[0015] Furthermore, the side of the fixing frame is provided with a positioning hole, which communicates with the rectangular groove; the drive screw is rotatably mounted in the positioning hole via a bearing.

[0016] Furthermore, the cutting guide is slidably mounted on the fixed frame, and the cutting guide is disposed between the first L-shaped section and the second L-shaped section; the cutting guide is provided with scale lines for marking the cutting dimensions.

[0017] Furthermore, a third T-shaped protrusion is provided below the cutting guide, and the third T-shaped protrusion is slidably installed in the T-shaped groove.

[0018] Furthermore, a positioning sleeve is provided on one side of the longitudinal end face of the cutting guide facing the first L-shaped section, and an adjusting screw is threadedly connected to the side of the fixing frame. The end of the adjusting screw is rotatably connected to the positioning sleeve through a bearing. Rotating the adjusting screw can adjust the relative position of the cutting guide on the fixing frame.

[0019] Furthermore, it also includes: a base; a first T-shaped protrusion is fixedly disposed below the fixing frame; the first T-shaped protrusion is disposed perpendicular to the T-shaped sliding groove; the fixing frame is slidably mounted on the base through the first T-shaped protrusion.

[0020] The technical solution of this utility model can achieve at least one of the following effects:

[0021] 1. The present invention provides a fixing and clamping device for EMC sample cutting. To address the problem of uneven EMC sample cutting dimensions, a sample clamping component that is slidably installed with a fixing frame is set up to clamp and fix the sample to be cut. At the same time, a cutting guide component that is slidably installed above the sample is used to accurately position the cutting position. Furthermore, the scale lines on the cutting guide component are used to monitor the cutting dimensions, maintain the consistency of the cutting position and cutting dimensions, and thus obtain an EMC test sample with structural dimensions that meet the requirements.

[0022] 2. The fixing and clamping device for EMC sample cutting of this utility model adopts two sets of drive screws that are threadedly engaged with the sample clamping parts to form a screw-nut pair between the sample clamping parts, drive screws and fixing frame, thereby enabling the sliding displacement of the sample clamping parts to clamp and fix the sample.

[0023] 3. The fixing and clamping device for EMC sample cutting of this utility model adopts a set of adjusting screws installed between the fixing frame and the cutting guide. By rotating the adjusting screws, the installation position of the cutting guide on the fixing frame can be adjusted. Then, by adjusting the screws, the cutting guide can be moved to slide displacement, so as to realize flexible adjustment of the cutting position and ensure that the cutting guide remains unchanged after being adjusted. This ensures the cutting consistency when cutting multiple samples.

[0024] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0025] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0026] Figure 1 This is a schematic diagram of the structure of the fixing and clamping device for EMC sample cutting according to the present invention;

[0027] Figure 2 This is an exploded view of the fixing and clamping device for EMC sample cutting according to Embodiment 1 of this utility model;

[0028] Figure 3 This is a schematic diagram of the fixing frame of the fixing and clamping device for EMC sample cutting according to Embodiment 1 of this utility model;

[0029] Figure 4 This is a schematic diagram of the sample clamping component of the fixing clamping device for EMC sample cutting according to Embodiment 1 of this utility model;

[0030] Figure 5 This is a schematic diagram of the cutting guide of the fixing and clamping device for EMC sample cutting according to Embodiment 1 of this utility model;

[0031] Figure 6 This is a schematic diagram of the adjusting screw of the fixing and clamping device for EMC sample cutting in Embodiment 1 of this utility model;

[0032] Figure 7 This is a schematic diagram of the sample protection strip of the fixing and clamping device for EMC sample cutting in Embodiment 1 of this utility model;

[0033] Figure 8 This is a schematic diagram showing the installation method of the adjusting screw of the fixing and clamping device for EMC sample cutting according to this utility model.

[0034] Figure label:

[0035] 1-Fixed clamping device; 2-Sample to be cut;

[0036] 101-Fixing frame; 102-Sample clamp; 103-Cutting guide; 104-First drive screw; 105-Second drive screw; 106-First sample protection strip; 107-Second sample protection strip; 108-Positioning sleeve; 109-Adjusting screw;

[0037] 101a-T-shaped groove; 101b-rectangular groove; 101c-positioning hole; 101d-first T-shaped protrusion; 101e-first L-shaped section; 101f-rectangular hole;

[0038] 102a - Second T-shaped protrusion; 102b - Threaded locating hole; 102c - Second L-shaped section;

[0039] 103a - Third T-shaped bump; 103b - Scale line. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0041] Example 1

[0042] A specific embodiment of this utility model discloses a fixing and clamping device for EMC sample cutting, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the device includes: a fixing frame 101, a sample holder 102, a cutting guide 103, and a driving screw. The upper surface of the fixing frame 101 is provided with a first L-shaped cross section 101e, and the upper part of the sample holder 102 is provided with a second L-shaped cross section 102c, with the second L-shaped cross section 102c facing opposite directions to the first L-shaped cross section 101e. The sample holder 102 is slidably mounted on the fixing frame 101, and the driving screw is rotatably mounted on the fixing frame 101. The sample holder 102 and the driving screw are connected by a thread. When the driving screw rotates, it can drive the sample holder 102 to slide relative to the fixing frame 101. When the sample holder 102 slides relative to the fixing frame 101, the second L-shaped cross section 102c and the first L-shaped cross section 101e move closer to or further away from each other, thereby clamping or releasing the sample 2 to be cut.

[0043] Furthermore, the cutting guide 103 is slidably mounted on the fixing frame 101, and the cutting guide 103 is disposed between the first L-shaped section 101e and the second L-shaped section 102c; the cutting guide 103 is used to position the cutting position; the cutting guide 103 is provided with scale lines 103b for marking the cutting size.

[0044] The bottom of the fixing frame 101 has a through rectangular hole 101f, which allows the sample 2 to be cut to pass through.

[0045] Furthermore, an L-shaped first sample protection strip 106 and a second sample protection strip 107 are respectively installed on the first L-shaped section 101e and the second L-shaped section 102c.

[0046] In this embodiment, as Figure 3 , Figure 4 As shown, a T-shaped groove 101a is provided above the fixing frame 101; a second T-shaped protrusion 102a is provided below the sample holder 102, and the sample holder 102 is slidably installed in the T-shaped groove 101a through the second T-shaped protrusion 102a.

[0047] In this embodiment, as Figure 3 As shown, a rectangular groove 101b is provided above the fixing frame 101; a positioning protrusion is provided below the sample holder 102, and a threaded positioning hole 102b is provided on the positioning protrusion; the positioning protrusion and the driving screw are both located inside the rectangular groove 101b, and the driving screw is threaded into the threaded positioning hole 102b.

[0048] In this embodiment, as Figure 1 , Figure 2 , Figure 8 As shown, two rectangular slots 101b are arranged side by side on the fixing frame 101; two drive screws are provided, namely the first drive screw 104 and the second drive screw 105, and correspondingly, two threaded positioning holes 102b are provided on the sample clamping member 102.

[0049] In this embodiment, as Figure 3 As shown, the side of the fixing frame 101 is provided with a positioning hole 101c, which is connected to the rectangular groove 101b; the driving screw is rotatably installed in the positioning hole 101c through a bearing.

[0050] In this embodiment, as Figure 5 As shown, a third T-shaped protrusion 103a is provided below the cutting guide 103, and the third T-shaped protrusion 103a is slidably installed in the T-shaped groove 101a.

[0051] Furthermore, in order to achieve position adjustment and fixation of the cutting guide 103; such as Figure 8 As shown, a positioning sleeve 108 is provided on one side of the cutting guide 103 facing the longitudinal end face of the first L-shaped section 101e. The side of the fixing frame 101 is connected to the adjusting screw 109 by a thread, and the end of the adjusting screw 109 is rotatably connected to the positioning sleeve 108 by a bearing. Rotating the adjusting screw 109 can adjust the relative position of the cutting guide 103 on the fixing frame 101.

[0052] In this embodiment, the fixing clamping device 1 further includes: a base; a first T-shaped protrusion 101d is fixedly disposed below the fixing frame 101; the first T-shaped protrusion 101d is disposed perpendicular to the T-shaped slide groove 101a; the fixing frame 101 is slidably mounted on the base via the first T-shaped protrusion 101d. Preferably, a limiting screw is provided on the side of the base, the limiting screw is threaded onto the base, and its end can abut against the side of the first T-shaped protrusion 101d below the fixing frame 101 for positioning the fixing frame 101.

[0053] The components of the fixing clamping device 1 are described in detail below:

[0054] Specifically, such as Figure 3 As shown, the fixing frame 101 has an overall rectangular structure, and its structural design provides a basic support and mounting frame for the entire fixing and clamping device. The fixing frame 101 is provided with: a T-shaped groove 101a, a rectangular groove 101b, a positioning hole 101c, a first T-shaped protrusion 101d, a first L-shaped section 101e, and a rectangular hole 101f. Specifically, the T-shaped groove 101a is used to realize the sliding installation of the sample clamp 102 on the fixing frame 101; the rectangular groove 101b is used to realize the installation of the drive screw and to provide space for the cooperation between the drive screw and the sample clamp 102; the positioning hole 101c is used to realize the rotational installation of the drive screw on the fixing frame 101; and the first T-shaped protrusion 101d is used to realize the sliding installation between the fixing frame 101 and the base. The vertical end face of the first L-shaped section 101e is used to cooperate with the sample clamp 102 to realize the clamping and fixing of the sample 2 to be cut. The rectangular hole 101f is used to facilitate the installation of the sample 2 to be cut from the bottom between the fixing frame 101 and the sample holder 102.

[0055] like Figure 4As shown, the sample holder 102 has a strip-shaped structure, with two second T-shaped protrusions 102a and two positioning protrusions at its lower end. The second T-shaped protrusions 102a are used for sliding installation on the fixing frame 101. Each positioning protrusion has a threaded positioning hole 102b for cooperating with the drive screw to achieve sliding drive. The upper end of the sample holder 102 has a second L-shaped section 102c for clamping and fixing the sample. The sample holder 102 cooperates with the grooved slide rail 101a of the fixing frame 101 through the second T-shaped protrusions 102a to achieve connection and relative movement between the two.

[0056] like Figure 5 As shown, the cutting guide 103 has a third T-shaped protrusion 103a at the bottom and a scale line 103b at the top; the cutting guide 103 is installed in the T-shaped groove 101a of the fixing frame 101 and is located between the first sample protection strip 106 and the second sample protection strip 107.

[0057] Furthermore, the lower surface of the cutting guide 103 is provided with a trapezoidal groove to avoid the sample to be cut, so that the cutting guide 103 is suspended above the upper surface of the sample 2 to be cut. Figure 1 , Figure 8 As shown. Furthermore, by moving the cutting guide 103 left and right, the required cutting position can be determined, and the cutting size can be accurately determined using the scale lines 103b on the cutting guide 103.

[0058] like Figure 6 As shown, the first drive screw 104 and the second drive screw 105 have the same structure, and their dimensions and materials are completely identical. The first drive screw 104 and the second drive screw 105 are respectively installed in two rectangular slots 101b, and achieve rotational movement through the positioning holes 101c, thereby realizing the movement and positioning operation of the sample holder 102 through the lead screw and nut pair. The first drive screw 104 and the second drive screw 105 are respectively threadedly screwed into the two threaded positioning holes 102b on the sample holder 102, thereby driving the sample holder 102 to move, position, and fix within the T-shaped groove 101a of the fixing frame 101.

[0059] like Figure 7 As shown, both the first sample protection strip 106 and the second sample protection strip 107 are made of untreated 45# steel. Due to its low hardness, it can effectively prevent EMC samples from deforming or being damaged due to direct contact with the device during clamping. Both the first sample protection strip 106 and the second sample protection strip 107 are L-shaped strip structures. The first sample protection strip 106 is pasted on the first L-shaped section 101e of the fixing frame 101, while the second sample protection strip 107 is connected to the second L-shaped section 102c on the sample holder 102.

[0060] During implementation:

[0061] First, the fixing clamping device 1 is placed on the base with two parallel through groove slide rails. The first T-shaped protrusion 101d of the fixing clamping device 1 can cooperate with the base through the slide rails to achieve a stable fixation of the entire device.

[0062] Next, place the EMC sample: insert the rectangular EMC sample through the rectangular hole 101f at the bottom of the fixing clamping device 1 between the first sample protection strip 106 and the second sample protection strip 107.

[0063] Next, the EMC sample is fixed: by manually adjusting the first drive screw 104 and the second drive screw 105, the sample holder 102 is moved left and right on the fixing frame 101, thereby fixing and positioning the EMC sample. At the same time, the position of the cutting guide 103 is adjusted by rotating the adjusting screw 109.

[0064] Finally, the EMC sample is cut: the cutting tool selects the position to cut the sample according to the scale line 103b of the cutting guide 103, and then performs the cutting operation on the EMC sample.

[0065] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixing and clamping device for EMC sample cutting, characterized in that, include: The fixture (101), sample holder (102), cutting guide (103), and drive screw; The upper surface of the fixing frame (101) is provided with a first L-shaped section (101e), and the upper part of the sample holder (102) is provided with a second L-shaped section (102c). The second L-shaped section (102c) is arranged opposite to the first L-shaped section (101e). The sample holder (102) is slidably mounted on the fixed frame (101), and the drive screw is rotatably mounted on the fixed frame (101). The sample holder (102) and the drive screw are screwed together. When the drive screw rotates, it can drive the sample holder (102) to slide relative to the fixed frame (101). When the sample holder (102) slides relative to the fixed frame (101), the second L-shaped section (102c) and the first L-shaped section (101e) move closer or further away from each other, thereby clamping or releasing the sample (2) to be cut.

2. The fixing and clamping device for EMC sample cutting according to claim 1, characterized in that, The bottom of the fixture (101) has a through rectangular hole (101f) for allowing the sample (2) to be cut to pass through.

3. The fixing and clamping device for EMC sample cutting according to claim 1 or 2, characterized in that, An L-shaped first sample protection strip (106) and a second sample protection strip (107) are respectively installed on the first L-shaped section (101e) and the second L-shaped section (102c).

4. The fixing and clamping device for EMC sample cutting according to claim 1, characterized in that, A T-shaped groove (101a) is provided above the fixing frame (101); a second T-shaped protrusion (102a) is provided below the sample holder (102), and the sample holder (102) is slidably installed in the T-shaped groove (101a) through the second T-shaped protrusion (102a).

5. The fixing and clamping device for EMC sample cutting according to claim 1, characterized in that, A rectangular groove (101b) is provided above the fixing frame (101); a positioning protrusion is provided below the sample holder (102), and a threaded positioning hole (102b) is provided on the positioning protrusion; the positioning protrusion and the driving screw are both provided in the rectangular groove (101b), and the driving screw is screwed into the threaded positioning hole (102b) by threads.

6. The fixing and clamping device for EMC sample cutting according to claim 5, characterized in that, Two rectangular slots (101b) are arranged side by side on the fixing frame (101); two drive screws are provided, namely a first drive screw (104) and a second drive screw (105), and correspondingly, two threaded positioning holes (102b) are provided on the sample holder (102).

7. The fixing and clamping device for EMC sample cutting according to claim 5 or 6, characterized in that, The side of the fixing frame (101) is provided with a positioning hole (101c), which is connected to the rectangular groove (101b); the driving screw is rotatably installed in the positioning hole (101c) through a bearing.

8. The fixing and clamping device for EMC sample cutting according to claim 1, characterized in that, The cutting guide (103) is slidably mounted on the fixing frame (101), and the cutting guide (103) is disposed between the first L-shaped section (101e) and the second L-shaped section (102c); the cutting guide (103) is provided with scale lines (103b) for marking the cutting size.

9. The fixing and clamping device for EMC sample cutting according to claim 1, characterized in that, The cutting guide (103) is provided with a positioning sleeve (108) on one side of the longitudinal end face of the first L-shaped section (101e). The side of the fixing frame (101) is connected to the adjusting screw (109) by a thread, and the end of the adjusting screw (109) is rotatably connected to the positioning sleeve (108) by a bearing. Rotating the adjusting screw (109) can adjust the relative position of the cutting guide (103) on the fixing frame (101).

10. The fixing and clamping device for EMC sample cutting according to claim 4, characterized in that, Also includes: The base; a first T-shaped protrusion (101d) is fixedly disposed below the fixing frame (101); the first T-shaped protrusion (101d) is disposed perpendicular to the T-shaped slide groove (101a); the fixing frame (101) is slidably mounted on the base through the first T-shaped protrusion (101d).

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