Tension testing machine

Abstract

The utility model discloses a tension testing machine, which belongs to the field of testing equipment and comprises a testing machine body and a microscope connected onto the testing machine body. The tensile testing machine comprises the microscope, and can be operated under the microscope during testing, and accurate needle threading can be realized, so that the phenomena that the needle cannot be threaded, a gold thread is broken during needle threading, or a welding spot is ejected to fall off are reduced. Therefore, the utility model can solve the problem that the needle is threaded by naked eyes in the existing tension testing machine.

Description

Technical Field

[0001] The utility model relates to the field of testing equipment, in particular to a tensile testing machine. Background Art

[0002] Gold wire bonding is a common connection technology in microelectronics manufacturing. It uses tiny gold wires to connect the leads on a semiconductor chip to an external lead frame or circuit board. Adhesion testing is generally required after gold wire bonding. This involves assessing the strength of the connection between the bonded gold wire and the chip lead or lead frame to ensure reliability and stability.

[0003] Gold wire bonding adhesion testing is generally performed using a tensile testing machine. Specifically, a gradually increasing force is applied to the gold wire using the tensile testing machine until the gold wire falls off. The force value at the time of fall-off is recorded as the adhesion of the gold wire bond.

[0004] Since the height of the gold wire after gold wire bonding is only about 0.1-0.2mm, it is difficult to thread the needle with the naked eye when using a conventional tensile testing machine, resulting in problems such as the needle not being able to be threaded, the gold wire being broken during threading, or the solder joint being pushed off. Utility Model Content

[0005] The main purpose of the utility model is to provide a tensile testing machine, aiming to solve the problem caused by the difficulty of threading a needle with the naked eye.

[0006] To achieve the above-mentioned purpose, the tensile testing machine proposed in the present invention comprises:

[0007] Testing machine body;

[0008] The microscope is connected to the testing machine body.

[0009] In one embodiment, the microscope is connected to the testing machine body via a bracket, and the microscope and the bracket are rotatably connected.

[0010] In one embodiment, the bracket is movably connected to the testing machine body.

[0011] In one embodiment, the testing machine body is provided with a first sliding fitting member, the bracket is provided with a second sliding fitting member, and the first sliding fitting member is slidably connected to the second sliding fitting member;

[0012] The first sliding fitting part is a sliding rail or a sliding groove, and the second sliding fitting part is a sliding block or a ball.

[0013] In one embodiment, the microscope is an optical microscope or a digital microscope.

[0014] In one embodiment, the testing machine body includes:

[0015] a base, wherein a sample stage is provided on the base;

[0016] The test frame is arranged on the base and has a lifting structure;

[0017] The dynamometer is connected to the test frame and is provided with a test needle.

[0018] In one embodiment, the test stand comprises:

[0019] A column, fixed to the base;

[0020] A lifting block is movably connected to the column and can move along a first direction;

[0021] The mounting plate is fixed on the lifting block and is used to fix the dynamometer.

[0022] In one embodiment, the test stand further includes an electric drive structure, which includes:

[0023] A motor is arranged in the column;

[0024] A lead screw is arranged in the column along a first direction, is connected to the motor, and is connected to a lifting block.

[0025] In one embodiment, an adapter is provided at the end of the dynamometer, the adapter including a first adapter portion and a second adapter portion, the first adapter portion is arranged along a first direction, and the second adapter portion is arranged along a second direction;

[0026] A test needle is provided on the second adapter portion.

[0027] In one embodiment, the second direction is perpendicular to the first direction.

[0028] The tensile testing machine of this utility model includes a microscope. During testing, the test can be performed under the microscope, enabling precise needle threading, thereby reducing the occurrence of problems such as failure to thread the needle, wire breakage during threading, or solder joints being pushed off. Therefore, the utility model can solve the problems existing in tensile testing machines that rely on naked-eye needle threading. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 This is a front view of a tensile testing machine in one embodiment of the present invention;

[0031] Figure 2A top view of a tensile testing machine in one embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of a test needle and an adapter in one embodiment of the present invention;

[0033] Figure 4 This is a front sectional view of a column in one embodiment of the present invention.

[0034] Explanation of Figure Numbers

[0035] 100, test machine body; 11, base; 111, sample table; 12, test frame; 121, column; 1211, slot; 122, lifting block; 1221, connecting rod; 123, mounting plate; 124, motor; 125, lead screw; 13, dynamometer; 131, test needle; 132, adapter;

[0036] 200, microscope;

[0037] 300. Bracket; 31. First sliding fitting. DETAILED DESCRIPTION

[0038] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. "At least one" appearing in the embodiments of the present invention refers to one or more, and "more" refers to two or more.

[0039] In the description of the embodiments of the present invention, if the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0040] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the technical terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, it can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0042] After gold wire bonding, its ends are fixed. To ensure the reliability and stability of the connection, it is generally necessary to test the bonding strength between the gold wire and the underlying metal, known as a wire bond adhesion test. This test is typically performed using a tensile testing machine, which applies gradually increasing force to the gold wire until it breaks off. The force at the point of breakage is recorded as the wire bond adhesion.

[0043] After bonding, the gold wire has an arc with a height of about 0.1-0.2mm. During testing, the test needle needs to be inserted under the arc and then force is applied by raising the test needle. When using a conventional tensile testing machine for testing, it is difficult to thread the needle with the naked eye, resulting in problems such as the needle not being able to be threaded, the gold wire being broken during threading, or the solder joint being pushed off.

[0044] To this end, the utility model provides a tensile testing machine, referring to Figure 1 As shown, the tester includes a tester body 100 and a microscope 200 , and the microscope 200 is connected to the tester body 100 .

[0045] The tensile testing machine of this utility model can be operated under a microscope during testing, enabling precise needle threading, thereby reducing the occurrence of problems such as failure to thread the needle, wire breakage, or solder joints being pushed off during threading. Therefore, the utility model can solve the problems existing in existing tensile testing machines that use the naked eye to thread the needle.

[0046] In the embodiment of the present invention, the microscope 200 is connected to the testing machine body 100 via the bracket 300 , and the microscope 200 is rotatably connected to the bracket 300 .

[0047] The bracket 300 is used to support the microscope 200. The microscope 200 is rotatably connected to the bracket 300, and the angle of the microscope 200 can be adjusted as needed. In this case, the bracket 300 can be set as an ear seat structure to ensure the stability of the rotation connection. The rotation connection can be achieved by a rotating shaft or a hinge.

[0048] In an embodiment of the present invention, the bracket 300 is movably connected to the testing machine body 100. In this embodiment, the bracket 300 is movable, and the position of the microscope 200 can be adjusted as needed to meet the needs of different occasions.

[0049] In the embodiment of the present utility model, reference Figure 2 As shown, the testing machine body 100 is provided with a first sliding fitting part 31, and the bracket 300 is provided with a second sliding fitting part. The first sliding fitting part 31 is slidably connected with the second sliding fitting part; the first sliding fitting part 31 is a slide rail or a slide groove, and the second sliding fitting part is a slider or a ball.

[0050] by Figure 2 For example, in this embodiment, the first sliding member 31 is a linear groove, which is provided on the base 21 described later. The second sliding member is a slider, which is provided at the bottom end of the bracket 300 and can be inserted into the groove. Of course, the second sliding member can also be a ball bearing, that is, the ball bearing can be engaged through the groove; the first sliding member 31 can also be a slide rail, and the second sliding member can be a slider, that is, the slider can be engaged through the slide rail.

[0051] In other embodiments, the slide groove may also be configured to be arc-shaped, and the arc-shaped slide groove is disposed on the periphery of the sample stage 111 described later, so that the microscope 200 can move around the sample stage 111 .

[0052] In an embodiment of the present invention, the microscope is an optical microscope or a digital microscope. An optical microscope allows a user to observe through an eyepiece, while a digital microscope has a display, which is more convenient for observation.

[0053] In the embodiment of the present utility model, reference Figure 1 and 2 As shown, the testing machine body 100 includes a base 11, a test frame 12 and a tensile gauge 13; a sample table 111 is provided on the base 11; the test frame 12 is set on the base 11, and the test frame 12 is a lifting structure; the tensile gauge 13 is connected to the test frame 12, and a test needle 131 is provided on the tensile gauge 13.

[0054] Test pin 131 specific reference Figure 3 As shown, the test needle 131 is used to pass through the gold wire to apply an upward pulling force to the gold wire. The test needle 131 is configured to be needle-shaped in order to facilitate passing through the gold wire.

[0055] In the embodiment of the present utility model, reference Figure 1 As shown, the test stand 12 includes a column 121, a lifting block 122 and a mounting plate 123; the column 121 is fixed on the base 11, the lifting block 122 is movably connected to the column 121 and can move along the first direction; the mounting plate 123 is fixed on the lifting block 122 and is used to fix the dynamometer 13.

[0056] refer to Figure 1 As shown, the first direction is the vertical direction, that is, the lifting block 122 can move vertically along the column 121, thereby driving the dynamometer 23 to move and measure.

[0057] In the embodiment of the present utility model, reference Figure 4 As shown, the test frame 12 also includes an electric drive structure, which includes a motor 124 and a screw 125. The motor 124 is arranged in the column 121, and the screw 125 is arranged in the column 121 along the first direction. The screw 125 is connected to the motor 124, and a lifting block 122 is connected to the screw 125.

[0058] The column 121 of this embodiment is a hollow structure, the motor 124 is fixed at the bottom of the inner cavity of the column 121, and the output shaft of the motor 124 is connected to the screw 125, and the other end of the screw 125 is rotatably connected to the top of the inner cavity of the column 121 to drive the screw 125 to rotate through the motor 124.

[0059] The lifting block 122 is connected to the screw 125, which means that the lifting block 122 is connected to the nut on the screw 125, so that the lifting block 122 can be driven to move in the vertical direction during the rotation of the screw 125. Correspondingly, the surface of the column 121 is provided with a slot 1211 along the first direction, so that the connecting rod 1221 of the lifting block 122 can pass through the slot 1211 and be connected to the nut.

[0060] In the embodiment of the present utility model, reference Figure 3 As shown, an adapter 132 is provided at the end of the dynamometer 13. The adapter 132 includes a first adapter portion and a second adapter portion. The first adapter portion is arranged along the first direction, and the second adapter portion is arranged along the second direction. A test pin 131 is provided on the second adapter portion.

[0061] by Figure 3 For example, an adapter 132 is provided at the bottom end of the dynamometer 13 , and a test pin 131 is provided at the right end of the second adapter portion. That is, in this embodiment, the test pin 131 is connected to the dynamometer 13 via the adapter 132 .

[0062] In the embodiment of the present utility model, continue to refer to Figure 3 As shown, the second direction is perpendicular to the first direction. The first direction is a vertical direction, and the second direction is a horizontal direction, that is, the test needle 131 of this embodiment is horizontally arranged to facilitate needle insertion.

[0063] In an embodiment of the present invention, the tensile testing machine includes a testing machine body 100, a microscope 200 and a bracket 300. The testing machine body 100 includes a base 11, a test frame 12 and a tensile gauge 13. A sample table 111 is provided on the base 11. The test frame 12 includes a column 121, a lifting block 122, a mounting plate 123, a motor 124 and a lead screw 125. The column 121 is fixed on the base 11 and is arranged close to the edge of the base 11. The column 121 is a hollow structure, and a slot 1211 is provided on the surface of the column 121; the motor 124 is fixed to the bottom of the inner cavity of the column 121, the bottom end of the lead screw 125 is connected to the output shaft of the motor 124, and the top end is rotatably connected to the top of the inner cavity of the column 121; the lifting block 122 is connected to the nut on the lead screw 125 through a connecting rod provided on the back; the mounting plate 123 is fixed to the lifting block 122. The force gauge 13 is fixed to the lifting block 122. An adapter 132 is provided at its bottom end, with a test pin 131 connected to its end. The microscope 200 is connected to the base 11 via a bracket 300, which is rotatably connected to the bracket 300. The bracket 300 is an ear-shaped structure with a slider at its bottom end. A slot is provided on the base 11 to facilitate the sliding connection between the bracket 300 and the base 11.

[0064] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A tensile testing machine, characterized in that: include: Testing machine body; The microscope is connected to the testing machine body.

2. The tensile testing machine according to claim 1, wherein: The microscope is connected to the testing machine body through a bracket, and the microscope is rotatably connected to the bracket.

3. The tensile testing machine according to claim 2, wherein: The bracket is movably connected to the testing machine body.

4. The tensile testing machine according to claim 3, characterized in that The testing machine body is provided with a first sliding fitting member, the bracket is provided with a second sliding fitting member, and the first sliding fitting member is slidably connected to the second sliding fitting member; The first sliding fitting part is a sliding rail or a sliding groove, and the second sliding fitting part is a sliding block or a ball.

5. The tensile testing machine according to any one of claims 1 to 4, characterized in that: The microscope is an optical microscope or a digital microscope.

6. The tensile testing machine according to any one of claims 1 to 4, characterized in that: The testing machine body comprises: a base, wherein a sample stage is provided on the base; A test stand is provided on the base, and the test stand is a lifting structure; A dynamometer is connected to the test frame, and a test needle is provided on the dynamometer.

7. The tensile testing machine according to claim 6, wherein: The test stand comprises: A column fixed on the base; a lifting block, movably connected to the column and capable of moving along a first direction; A mounting plate is fixed on the lifting block and is used to fix the dynamometer.

8. The tensile testing machine according to claim 7, wherein: The test stand further includes an electric drive structure, which includes: a motor, disposed in the column; A lead screw is arranged in the column along a first direction, the lead screw is connected to the motor, and the lifting block is connected to the lead screw.

9. The tensile testing machine according to claim 6, wherein: An adapter is provided at the end of the dynamometer, and the adapter includes a first adapter portion and a second adapter portion, the first adapter portion is arranged along a first direction, and the second adapter portion is arranged along a second direction; The test needle is provided on the second adapter portion.

10. The tensile testing machine according to claim 9, wherein: The second direction is perpendicular to the first direction.

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