Substrate clamping device for observing warping of substrate under mirror

Abstract

The substrate clamping device is characterized in that the substrate clamping device comprises a supporting assembly, a rotating shaft installed on the supporting assembly and a clamp fixed to the front end of the rotating shaft, the clamp is provided with a front clamping block and a rear clamping block which are arranged in a front-back mode and can be clamped and separated, and a clamping block is arranged between the left side and the right side between the front clamping block and the rear clamping block. During observation, the front clamping block and the rear clamping block clamp the front side and the rear side of the base plate, the rotating shaft is rotated, and the two faces of the base plate can be observed from any angle. The device has the advantages that the observation angle of the clamped substrate can be accurately adjusted under a microscope; the structure is simple and operation is convenient.

Description

Technical Field

[0001] The invention relates to a substrate clamping device for observing substrate warping under a microscope, belonging to the technical field of chip detection. Background Art

[0002] One type of substrate production requires high-temperature reflow soldering after the chip is flipped on the substrate. The substrate that has undergone high-temperature reflow soldering will bend and deform due to the difference in internal material stress expansion and contraction during the soldering and cooling process. In order to take targeted preventive measures in the subsequent high-temperature reflow soldering process, the substrate that has completed high-temperature reflow soldering needs to be observed and inspected under a microscope to obtain relevant warping data.

[0003] Observation under the microscope requires that the substrate be constantly changed in angle, and requires that the clamping member holding the substrate cannot block the line of sight at a specific angle.

[0004] The traditional method is to place paper, cloth, etc. as a pad under a microscope, place the substrate to be tested on the pad, and observe the substrate by manually changing the direction or angle of the pad. However, this manual operation of changing the pad is extremely irregular, and it is often difficult to obtain the ideal angle after repeated adjustments. Summary of the invention

[0005] The technical problem to be solved by the present invention is: how to conveniently and accurately change the observation angle of the substrate under the microscope.

[0006] In view of the above problems, the technical solution proposed by the present invention is: A substrate clamping device for observing substrate warpage under a microscope, characterized in that it includes a support component, a rotating shaft installed on the support component, and a clamp fixed to the front end of the rotating shaft, wherein the clamp has a front clamping block and a rear clamping block arranged front and back and capable of clamping and separating, and at least one of the left and right sides between the front clamping block and the rear clamping block is open. During observation, the front and rear sides of the substrate are clamped by the front clamping block and the rear clamping block, and the rotating shaft is rotated to observe the two surfaces of the substrate from any angle.

[0007] The clamp also has a left guide rod and a right guide rod, the rear ends of which are fixed at a distance on the left side of the rear clamping block, the left guide rod and the right guide rod are parallel and are located in the same plane as the front clamping block and the rear clamping block, the left end of the front clamping block has two guide rod holes, and the left guide rod and the right guide rod are respectively penetrated with two guide rod holes, so that the front clamping block can slide forward and backward.

[0008] The substrate clamping device also includes a spring for applying a rearward force to the front clamping block.

[0009] A sleeve rod is provided between the left guide rod and the right guide rod, and a sleeve rod hole is provided on the front clamping block located between the left guide rod and the right guide rod. The rear end of the sleeve rod is fixed on the rear clamping block between the left guide rod and the right guide rod, and the front end passes through the sleeve rod hole. The front end of the sleeve rod is provided with an external thread, which has a distance adjusting nut that is sleeved on the front end of the sleeve rod and cooperates with the external thread. The spring is a compression spring sleeved on the front section of the sleeve rod between the front clamping block and the distance adjusting nut.

[0010] The spring is a tension spring which is arranged between the left guide rod and the right guide rod and has one end pulling the front clamping block and the other end pulling the rear clamping block.

[0011] The rear side of the front clamping block and the front side of the rear clamping block are symmetrically provided with clamping grooves.

[0012] The clamping groove is a V-shaped groove having only two groove walls, and a flexible cushion layer is arranged on the groove walls.

[0013] The support assembly includes a support seat and a rectangular frame of the mounting fixture, the support seat is composed of a seat plate and a column, there are corresponding bolt holes on the column and the left frame edge of the rectangular frame, the rectangular frame is fixed to the column by bolts, and a resistance pad is provided on the column between the rectangular frame and the column, the rectangular frame is pressed against the resistance pad and can rotate around the bolt subject to the friction resistance of the resistance pad.

[0014] On the rear frame side of the rectangular frame, there is an axial hole communicating front and back. The clamp is arranged in the rectangular frame. The front end of the rotating shaft is fixedly connected to the clamp, and its rear section extends backward from the axial hole on the rear frame side of the rectangular frame. The rotating shaft can rotate in the axial hole.

[0015] A bubble level 1 and a bubble level 2 are respectively arranged on the left frame edge of the rectangular frame and on the rotating shaft, and the deflection surfaces where the bubble level 1 and the bubble level 2 are located are perpendicular to each other. Beneficial Effects

[0016] 1. Able to accurately adjust the observation angle of the clamped substrate under the microscope; 2. Simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the substrate clamping device described in Example 1; Figure 2 This is a schematic diagram of the disassembly of the support assembly described in Example 1; Figure 3 It is a three-dimensional schematic diagram of embodiment 1; Figure 4 for Figure 3 A partial schematic diagram of the invention mainly showing a compression spring; Figure 5 for Figure 3 A partial schematic diagram of the invention, mainly showing the clamping groove; Figure 6 It is a three-dimensional schematic diagram of the substrate clamping device of the first embodiment clamping a substrate; Figure 7 This is a three-dimensional schematic diagram of the clamp using a tension spring in the second embodiment.

[0018] In the figure: 1. support seat; 11. seat plate; 12. column; 121. resistance pad; 2. rectangular frame; 21. bubble level 1; 22. bolt hole; 23. shaft hole; 24. bolt; 3. clamp; 31. front clamp block; 32. rear clamp block; 33. left guide rod; 34. right guide rod; 35. sleeve rod; 351. nut; 36. compression spring; 37. tension spring; 38. clamping groove; 381. flexible cushion layer; 4. rotating shaft; 41. rotating handle; 42. bubble level 2; 5. base plate. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1

[0020] like Figure 1 , 6 As shown, a substrate clamping device for observing substrate warpage under a microscope comprises a support assembly, a rotating shaft 4 mounted on the support assembly, and a clamp 3 fixed at the front end of the rotating shaft 4. The clamp 3 has a front clamping block 31 and a rear clamping block 32 that can be clamped and separated, and at least one of the left and right sides between the front clamping block 31 and the rear clamping block 32 is an opening, and no components that block the line of sight are set in the opening. When observing, the front and rear sides of the substrate 5 are clamped by the front clamping block 31 and the rear clamping block 32. Only by rotating the rotating shaft 4, the two surfaces of the substrate 5 can be observed from any angle. Since the clamp 3 is set on a stable support, the rotation operation can be conveniently and accurately implemented.

[0021] like Figure 1 , 3 As shown, the clamp 3 also has a left guide rod 33 and a right guide rod 34, the rear ends of the left guide rod 33 and the right guide rod 34 are fixed at a distance on the left side of the rear clamp block 32, the left guide rod 33 and the right guide rod 34 are parallel and are located in the same plane as the front clamp block 31 and the rear clamp block 32, the left end of the front clamp block 31 has two guide rod holes, the left guide rod 33 and the right guide rod 34 are respectively penetrated with two guide rod holes, so that the front clamp block 31 can slide back and forth, so that substrates 5 of different specifications can be clamped.

[0022] like Figure 3 , 4As shown, the substrate clamping device also includes a spring that applies a backward force to the front clamping block 31, so that the substrate 5 can be clamped, which is conducive to improving the stability of the clamped substrate 5. In addition, when it is necessary to observe the edge of the substrate, the clamped substrate 5 can be removed, and the force of the spring can make the front clamping block 31 moderately close to the rear clamping block 32, so that the distance between the front clamping block 31 and the rear clamping block 32 is smaller than the width of the substrate 5, and then the substrate 5 can be placed horizontally on the front clamping block 31 and the rear clamping block 32, so that the four edges of the substrate 5 can be seen clearly without obstruction.

[0023] A sleeve rod 35 is provided between the left guide rod 33 and the right guide rod 34, and a sleeve rod hole is provided on the front clamping block 31 located between the left guide rod 33 and the right guide rod 34. The rear end of the sleeve rod 35 is fixed on the rear clamping block 32 between the left guide rod 33 and the right guide rod 34, and the front end passes through the sleeve rod hole. The front end of the sleeve rod 35 is provided with an external thread, which has a distance adjusting nut 351 that is matched with the external thread and sleeved on the front end of the sleeve rod 35. The spring is a compression spring 36 on the front section of the sleeve rod 35 between the front clamping block 31 and the distance adjusting nut 351, and the compression spring 36 applies a clamping force to the substrate 5.

[0024] like Figure 3 , 5 As shown, the rear side of the front clamping block 31 and the front side of the rear clamping block 32 are symmetrically provided with clamping grooves 38 , and both sides of the clamped substrate 5 are located in the clamping grooves 38 .

[0025] Furthermore, the clamping groove 38 is a V-shaped groove with only two groove walls, and a flexible cushion layer 381 is provided on the groove wall, so that it can adapt to the clamping of substrates 5 with different thicknesses and the clamping is stable.

[0026] like Figure 1 , 2 As shown, the support assembly includes a support seat 1 and a rectangular frame 2 for mounting a fixture 3. The support seat 1 is composed of a seat plate 11 and a column 12. There are corresponding bolt holes 22 on the column 12 and the left frame edge of the rectangular frame 2. The rectangular frame 2 is fixed to the column 12 by bolts 24. A resistance pad 121 is provided on the column 12 between the rectangular frame 2 and the column 12. The rectangular frame 2 is pressed against the resistance pad 121 and can rotate around the bolt 24 under the friction resistance of the resistance pad 121. In this way, the angle of the clamped substrate 5 along the front-back direction can be adjusted as needed.

[0027] On the rear frame side of the rectangular frame 2, there is an axial hole 23 that is connected front to back. The clamp 3 is arranged in the rectangular frame 2. The front end of the rotating shaft 4 is fixedly connected to the clamp 3, and its rear section extends backward from the axial hole 23 on the rear frame side of the rectangular frame. The rotating shaft 4 can rotate in the axial hole 23, so that the angle of the substrate 5 along the left and right directions can be adjusted as needed.

[0028] In order to facilitate the rotation of the rotating shaft 4, a rotating handle 41 is provided at the rear end of the rotating shaft.

[0029] like Figure 1 , 6 As shown, a bubble level 1 21 and a bubble level 2 42 are respectively provided on the left frame edge of the rectangular frame 2 and on the rotating shaft 4, and the deflection surfaces where the bubble level 1 21 and the bubble level 2 are located are perpendicular to each other. When the bubble level 1 21 shows a horizontal state, the rotating shaft 4 works in a horizontal posture. When both the bubble level 1 21 and the bubble level 2 42 show a horizontal state, the substrate 5 is on a horizontal plane. Embodiment 2

[0030] like Figure 7 As shown, the difference from the first embodiment is that a spring is provided between the left guide rod 33 and the right guide rod 34, one end of which pulls the front clamping block 31, and the other end of which pulls the tension spring 37 of the rear clamping block 32, and the tension spring 37 applies a clamping force to the substrate 5.

[0031] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the protection scope of the present invention. Any modifications in equivalent forms should be regarded as falling within the protection scope of the present invention.

Claims

1. A substrate clamping device for observing substrate warpage under a microscope, characterized in that: The invention comprises a support assembly, a rotating shaft (4) mounted on the support assembly, and a clamp (3) fixed at the front end of the rotating shaft (4); the clamp (3) comprises a front clamp block (31) and a rear clamp block (32) arranged front and rear and capable of clamping and separating; at least one of the left and right sides between the front clamp block (31) and the rear clamp block (32) is open; when observing, the front and rear sides of the substrate (5) are clamped by the front clamp block (31) and the rear clamp block (32); and the rotating shaft (4) is rotated, so that the two surfaces of the substrate (5) can be observed from any angle.

2. The substrate clamping device for observing substrate warpage under a microscope according to claim 1, characterized in that: The clamp (3) further comprises a left guide rod (33) and a right guide rod (34), the rear ends of which are fixed to the left side of the rear clamp block (32) at a distance, the left guide rod (33) and the right guide rod (34) are parallel to each other and are located in the same plane as the front clamp block (31) and the rear clamp block (32), the left end of the front clamp block (31) comprises two guide rod holes, the left guide rod (33) and the right guide rod (34) respectively penetrate the two guide rod holes, so that the front clamp block (31) can slide forward and backward.

3. The substrate clamping device for observing substrate warpage under a microscope according to claim 2, characterized in that: Also included is a spring for applying a rearward force to the front clamping block (31).

4. The substrate clamping device for observing substrate warpage under a microscope according to claim 3, characterized in that: A sleeve rod (35) is provided between the left guide rod (33) and the right guide rod (34); a sleeve rod hole is provided on a front clamping block (31) between the left guide rod (33) and the right guide rod (34); a rear end of the sleeve rod (35) is fixed to a rear clamping block (32) between the left guide rod (33) and the right guide rod (34); a front end passes through the sleeve rod hole; an external thread is provided at the front end of the sleeve rod (35); and a distance adjusting nut (351) is provided which is matched with the external thread and sleeved on the front end of the sleeve rod (35); and the spring is a compression spring (36) sleeved on the front section of the sleeve rod (35) between the front clamping block (31) and the distance adjusting nut (351).

5. The substrate clamping device for observing substrate warpage under a microscope according to claim 3, characterized in that: The spring is a tension spring (37) disposed between the left guide rod (33) and the right guide rod (34), one end of which pulls the front clamping block (31) and the other end of which pulls the rear clamping block (32).

6. The substrate clamping device for observing substrate warpage under a microscope according to claim 2, characterized in that: The rear side of the front clamping block (31) and the front side of the rear clamping block (32) are symmetrically provided with clamping grooves (38).

7. The substrate clamping device for observing substrate warpage under a microscope according to claim 6, characterized in that: The clamping groove (38) is a V-shaped groove having only two groove walls, and a flexible cushion layer (381) is provided on the groove walls.

8. The substrate clamping device for observing substrate warpage under a microscope according to claim 1, characterized in that: The support assembly comprises a support seat (1) and a rectangular frame (2) for mounting a fixture (3); the support seat (1) is composed of a seat plate (11) and a column (12); corresponding bolt holes (22) are arranged on the column (12) and the left frame edge of the rectangular frame (2); the rectangular frame (2) is fixed to the column (12) by bolts (24); a resistance pad (121) is arranged on the column (12) between the rectangular frame (2) and the column (12); the rectangular frame (2) is pressed against the resistance pad (121) and can rotate around the bolt (24) subject to the friction resistance of the resistance pad (121).

9. The substrate clamping device for observing substrate warpage under a microscope according to claim 8, characterized in that: An axial hole (23) communicating front and rear is provided on the rear frame side of the rectangular frame (2). The clamp (3) is arranged in the rectangular frame (2). A rotating shaft (4) whose front end is fixedly connected to the clamp (3) extends rearward from the axial hole (23) on the rear frame side of the rectangular frame. The rotating shaft (4) can rotate in the axial hole (23).

10. The substrate clamping device for observing substrate warpage under a microscope according to claim 9, characterized in that: A bubble level 1 (21) and a bubble level 2 (42) are respectively provided on the left frame edge of the rectangular frame (2) and the rotating shaft (4), and the deflection surfaces of the bubble level 1 (21) and the bubble level 2 are perpendicular to each other.

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