A visual field extension device and method for blind area of wire bonding equipment observation

Abstract

The present application relates to the technical field of gold wire bonding of microwave / millimeter wave products, and particularly discloses a visual field extension device and method for a blind area of a gold wire bonding device, which comprises a sliding seat, a sliding block installed on the sliding seat and moving along the X-axis and / or Y-axis direction, a main bearing cross bar installed on the sliding block and rotatingly matched with the sliding block along the Z-axis direction, and a locking member for locking the main bearing cross bar and the sliding seat; the sliding seat is installed on the gold wire bonding device, and the main bearing cross bar is connected with a microscope base. The present application can effectively realize 360° full-angle flexible adjustment of the microscope, and can also realize two-way accurate positioning along the X-axis and Y-axis. The effective and rapid locking and fixing through the locking member greatly reduces the device adjustment problem and the adjustment time problem, and improves the pressure welding precision and welding efficiency of the gold wire bonding.

Description

Technical Field

[0001] This invention relates to the field of gold wire bonding technology for microwave / millimeter-wave products, and more specifically, to a field of view expansion device and method for observing blind spots in gold wire bonding equipment. Background Technology

[0002] As the operating frequency of millimeter-wave circuits gradually increases, circuit integration density is also constantly rising, leading to high-density, narrow-pitch circuit layouts in product designs. During the gold wire bonding assembly process, gold wire bonding equipment is required. High-powered microscopes within this equipment are used to observe the chip surface pads and product transmission lines to ensure that the bonding tool accurately and precisely welds the gold wires to the corresponding solder joints, thus achieving electrical connection. Currently, mainstream gold wire bonding equipment used in production assembly is limited by product design and the operating range of the bonding tool, resulting in "assembly blind spots" where some bonding joints are either unobservable or observable but cannot be operated on.

[0003] To solve this problem, two assembly methods are typically used: 1. Repeatedly adjusting the microscope stand and adjacent components to find the observation angle is required. The existing equipment uses multiple hexagonal screws for fixing, which is time-consuming to adjust, inconvenient, and has a limited field of view adjustment range, seriously affecting the production cycle.

[0004] 2. For the increasingly common complex structural designs of deep cavities, near-wall cavities, and irregularly shaped cavities in microwave and millimeter-wave components, the limitation of the field of view can no longer be adjusted by existing devices. Blind spots still exist after joint debugging, and operators can only perform "blind operation," which relies heavily on personal skills, resulting in poor assembly consistency and probabilistic damage to precision components.

[0005] These problems not only affect production efficiency but also hinder further breakthroughs and development in micro-assembly wire bonding technology. Therefore, there is an urgent need for a device and method that can solve the aforementioned assembly blind spot problem. Summary of the Invention

[0006] The technical problem to be solved by this invention is to provide a field of view expansion device and method for the blind zone of gold wire bonding equipment, which can effectively achieve 360° full-angle flexible adjustment of the microscope, and at the same time achieve precise bidirectional adjustment in the X and Y axes. The locking component effectively and quickly locks and fixes the device, greatly reducing the difficulty and time consumption of equipment adjustment, and improving the pressure bonding accuracy and welding efficiency of gold wire bonding. The solution adopted by this invention to solve the technical problem is: on the one hand: The present invention provides a field of view expansion device for the blind spot of gold wire bonding equipment, comprising a sliding seat, a slider mounted on the sliding seat and moving along the X-axis and / or Y-axis, a main bearing crossbar mounted on the slider and rotating around the Z-axis and engaging with the slider, and a locking member for locking the main bearing crossbar and the sliding seat. The sliding seat is installed on the gold wire bonding equipment, and the main support crossbar is connected to the microscope base.

[0007] In some possible implementations, a cross guide groove is provided on the sliding seat; one end of the slider is located in the cross guide groove and the other end passes through the cross guide groove; the main bearing crossbar is provided on the sliding seat and rotates with the slider.

[0008] In some possible implementations, the cross-shaped guide groove has a T-shaped cross section with an opening at its small end. The slider includes a disk located at the large end of the cross-shaped guide groove and slidingly fitted therewith, and a cylindrical rod coaxially mounted on the disk with one end passing through the cross-shaped guide groove. The main bearing crossbar is fitted onto the outside of the cylindrical rod.

[0009] In some possible implementations, the locking element includes a screw rod that is screwed into the cylindrical rod, a limiting ring disposed on the screw rod, the limiting ring being located above the main bearing crossbar; and an internal threaded hole for screwing the screw rod is provided in the cylindrical rod, the length of the internal threaded hole being greater than the length of the screw rod.

[0010] In some possible implementations, an opening is provided at one end of the cross guide groove and on the bottom surface of the slide seat, and a plug is provided on the slide seat to close the opening.

[0011] In some possible implementations, the main support crossbar includes a support rod fitted on the outside of the slider and mounted on the sliding seat, a connecting rod coaxially connected to the support rod, and a locking block screwed to the connecting rod and provided with an internal threaded hole.

[0012] In some possible implementations, the connecting rod includes a smooth rod coaxially connected to the support rod, and a threaded section coaxially connected to the smooth rod and connected to the locking block.

[0013] In some possible implementations, the support rod has a square cross-section.

[0014] on the other hand: This invention also provides a method for expanding the field of view in the blind zone of a gold wire bonding device, based on the above-described device for expanding the field of view in the blind zone of a gold wire bonding device; specifically including the following steps: Step S1: Fix the sliding seat on the gold wire bonding equipment and connect and fix the main support crossbar to the microscope base; Step S2: Microscope adjustment; control the slider to move along the X-axis and / or Y-axis on the sliding seat, and control the main bearing crossbar to rotate around the Z-axis; Step S3: After the microscope position is adjusted, the main bearing crossbar, slider and sliding seat are locked by the locking assembly, and the gold wire bonding equipment can be operated to perform bonding.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, by setting a cross guide groove and an internal slider structure on the sliding seat, achieves the linkage adjustment of the microscope's field of view along the X and Y axes through the cooperation of the main bearing crossbar and the slider. At the same time, the cooperation of the main bearing crossbar and the slider allows the microscope to rotate 360° around the Z axis, thereby effectively achieving precise alignment of the microscope with the cleaving trajectory in the gold wire bonding equipment; greatly improving the adjustment accuracy of the lifting position and meeting the needs of refined operation.

[0016] This invention expands the microscopic field of view of the gold wire bonding equipment, enabling the field of view to be expanded to the entire stage plane after the microscope is quickly adjusted. For deep cavity structures, it can be bonded quickly by adjustment, and it is also compatible with large-scale components. It can be used to bond components with large dimensions and compact layout. This invention utilizes a locking component to achieve rapid locking and positioning after adjustment, overcoming the drawbacks of traditional single-point adjustment. This allows for easy tightening and loosening of screws when adjusting equipment in blind-spot conditions, eliminating the need for wrenches and screwdrivers. This significantly improves the visibility of blind-spot adjustments, reduces the difficulty of position calibration, and enhances the efficiency of adjusting the field of view of gold wire bonding equipment.

[0017] The invention has a simple overall structure and can directly replace the original microscope adjustment support structure without modifying other parts of the equipment. It is easy to assemble, greatly improves the failure rate of on-site operation, effectively increases the design layout density of microwave and millimeter-wave deep cavity near-wall components, expands the design space, and greatly improves the gold wire bonding quality of microwave and millimeter-wave components. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the sliding seat, slider, and locking component in this invention; Figure 3 This is a schematic diagram showing the connection relationship between the slider and the locking component in this invention; Figure 4 This is a schematic diagram of the main bearing crossbar, sliding seat, and locking component of the present invention; in: 1. Sliding seat; 11. Cross-shaped guide groove; 12. Block; 2. Slider; 21. Disk; 22. Cylindrical rod; 221. Internally threaded hole; 3. Main crossbar; 31. Support rod; 32. Polished rod; 33. Threaded section; 34. Locking block; 4. Locking components; 10. Microscope base. Detailed Implementation

[0019] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] The present invention will now be described in detail.

[0021] on the one hand: like Figures 1-4 As shown: The present invention provides a field of view expansion device for the blind spot of gold wire bonding equipment, comprising a sliding seat 1, a slider 2 mounted on the sliding seat 1 and moving along the X-axis and / or Y-axis, a main bearing crossbar 3 mounted on the slider 2 and rotating around the Z-axis and cooperating with the slider 2, and a locking member 4 for locking the main bearing crossbar 3 and the sliding seat 1. The sliding seat 1 is installed on the gold wire bonding equipment, and the main support crossbar 3 is connected to the microscope base 10; Specifically, in use, the position of the microscope is adjusted in the horizontal plane by moving the slider 2 along the X-axis and / or Y-axis, and the position of the microscope is adjusted by controlling the adjustment of the main support crossbar 3 around the Z-axis. After adjustment, the main support crossbar 3, slider 2, and sliding seat 1 are fixed by locking component 4, which greatly simplifies the adjustment. At the same time, the microscope field of view is wider by moving along the X-axis and / or Y-axis and rotating 360° around the Z-axis, which greatly reduces the blind zone problem of gold wire bonding, increases the component layout density of microwave and millimeter wave components, significantly reduces the difficulty of operation, and solves the dependence of blind zone bonding on highly skilled personnel.

[0022] In some possible implementations, in order to effectively enable the slider 2 to move in the X and Y directions on the sliding seat 1, a cross guide groove 11 is provided on the sliding seat 1; one end of the slider 2 is located in the cross guide groove 11 and the other end passes through the cross guide groove 11; the main support crossbar 3 is provided on the sliding seat 1 and rotates with the slider 2. Specifically, the cross guide groove 11 includes an X-axis guide groove arranged along the X-axis direction and a Y-axis guide groove arranged along the Y-axis direction, wherein the X-axis guide grooves intersect to form a cross structure; One end of the slider 2 is located in the cross guide groove 11, and can move along the X-axis and Y-axis directions within the cross guide groove 11, thereby driving the main support crossbar 3 to move along the X-axis and Y-axis directions, and adjusting the position of the microscope in the X-axis and Y-axis directions.

[0023] In some possible implementations, the cross guide groove 11 has a T-shaped cross section with an opening at its small end. The slider 2 includes a disk 21 located at the large end of the cross guide groove 11 and slidingly fitted therewith, and a cylindrical rod 22 coaxially mounted on the disk 21 with one end passing through the cross guide groove 11. The main support crossbar 3 is fitted on the outside of the cylindrical rod 22.

[0024] In some possible implementations, the locking member 4 includes a screw that is screwed into the cylindrical rod 22, a limiting ring disposed on the screw, the limiting ring being located above the main bearing crossbar 3; and an internal threaded hole 221 for screwing the screw is provided in the cylindrical rod 22, the length of the internal threaded hole 221 being greater than the length of the screw. Preferably, a turning handle is provided at the end of the screw away from the slider 2; When locking and fixing with locking component 4, turning the screw causes the limiting ring to move closer to the sliding seat 1. When the limiting ring abuts against the top surface of the main bearing crossbar 3, continue turning the screw, and the limiting ring will no longer move closer to the sliding seat 1. At this time, the slider 2 moves closer to the screw under the action of the screw rotation until the top surface of the disc 21 contacts and abuts against the top surface of the large end. Finally, the slider 2, the main bearing crossbar 3, and the sliding seat 1 will form a whole under the action of locking component 4. This whole will not move or rotate, thus realizing the rapid locking and fixing between microscopes and greatly reducing the difficulty of operation. When adjusting for blind spot issues, the screw can be easily tightened and loosened by turning the handle without the need for a wrench or screwdriver. This quickly improves the blind spot adjustment field of view, reduces the difficulty of position calibration, and increases the efficiency of adjusting the field of view of the gold wire bonding equipment. In some possible implementations, in order to effectively install the slider 2 into the cross guide groove 11 and prevent the slider 2 from sliding out of the cross guide groove 11, an opening is provided at one end of the cross guide groove 11 and on the bottom surface of the sliding seat 1, and a block 12 is provided on the sliding seat 1 to close the opening. Furthermore, the block 12 is connected to the sliding seat 1 by bolts.

[0025] In some possible implementations, the main support crossbar 3 includes a support rod fitted on the outside of the slider 2 and mounted on the sliding seat 1, a connecting rod coaxially connected to the support rod, and a locking block 34 screwed to the connecting rod and provided with an internal threaded hole 221.

[0026] The support rod and the connecting rod are coaxially connected. The connecting rod is used to install the microscope base 10. The locking block 34 cooperates with the connecting rod screw and the support rod to lock and fix the microscope base 10.

[0027] In some possible implementations, the connecting rod includes a smooth rod 32 coaxially connected to the support rod, and a threaded section 33 coaxially connected to the smooth rod 32 and connected to the locking block 34.

[0028] Specifically, the optical rod 32 is used to mount the microscope base 10. After the microscope base 10 is mounted on the optical rod 32, the locking block 34 is screwed to the threaded section 33. The locking block 34 and the support rod work together to clamp and fix the microscope base 10 by being close to each other on one side.

[0029] In some possible implementations, the support rod has a square cross-section; With this configuration, the contact area between the support rod and the limiting boss and the sliding seat 1 will be greatly increased; this will enable the top surface of the limiting boss and the sliding seat 1 to effectively clamp and fix the main support crossbar 3 under the action of the screw, while restricting the sliding of the slider 2 in the cross guide groove 11, thereby realizing the locking and fixing of movement and rotation using a locking element 4, simplifying the adjustment process.

[0030] on the other hand: This invention also provides a method for expanding the field of view in the blind zone of a gold wire bonding device, based on the above-described device for expanding the field of view in the blind zone of a gold wire bonding device; specifically including the following steps: Step S1: Fix the sliding seat 1 on the gold wire bonding device, and connect and fix the main support crossbar 3 to the microscope base 10; Step S2: Microscope adjustment; control the slider 2 to move along the X-axis and / or Y-axis on the sliding seat 1, and control the main support crossbar 3 to rotate around the Z-axis; Step S3: After the microscope position is adjusted, the main bearing crossbar 3, slider 2 and sliding seat 1 are locked by the locking assembly, and the gold wire bonding equipment can be operated to perform bonding.

[0031] It should be noted that in the existing technology, the tilt angle and XY plane position of the microscope can only be finely adjusted by tightening the hexagonal nut of the bonding equipment bracket. The adjustment position is limited. When the component is more than a certain distance away from the side wall (when the distance between the component and the side wall is less than 0.9mm), a blind spot appears in the microscopic field of view.

[0032] When using this invention, when the chip circuit is installed with a deep gap, the slider 2 is slid to the edge of the cross guide groove 11 by loosening the locking member 4. The microscope base 10 is adjusted on the main support crossbar 3. At the same time, the clarity of the microscopic field of view is observed. The sliding seat 1 is rotated towards the object surface by a certain angle. When the near-wall bonding object appears in the center of the field of view, the microscope base 10 is locked on the main support crossbar 3 by the locking block 34. After the adjustment is completed, the chip circuit in the center of the microscopic field of view is bonded.

[0033] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A field-of-view expansion device for observing blind spots in gold wire bonding equipment, characterized in that, It includes a sliding seat, a slider mounted on the sliding seat and moving along the X-axis and / or Y-axis, a main bearing crossbar mounted on the slider and rotating around the Z-axis with the slider, and a locking member for locking the main bearing crossbar and the sliding seat; The sliding seat is installed on the gold wire bonding equipment, and the main support crossbar is connected to the microscope base.

2. The field-of-view expansion device for observing blind spots in gold wire bonding equipment according to claim 1, characterized in that, A cross guide groove is provided on the sliding seat; one end of the slider is located in the cross guide groove and the other end passes through the cross guide groove; the main bearing crossbar is provided on the sliding seat and rotates with the slider.

3. A field-of-view expansion device for observing blind spots in gold wire bonding equipment according to claim 2, characterized in that, The cross-section of the cross guide groove is T-shaped, with an opening at its small end. The slider includes a disc located at the large end of the cross guide groove and slidingly fitted therewith, and a cylindrical rod coaxially mounted on the disc with one end passing through the cross guide groove. The main bearing crossbar is fitted on the outside of the cylindrical rod.

4. A field-of-view expansion device for observing blind spots in gold wire bonding equipment according to claim 3, characterized in that, The locking component includes a screw rod that is screwed into the cylindrical rod, and a limiting ring disposed on the screw rod, the limiting ring being located above the main bearing crossbar; an internal threaded hole for screwing the screw rod is provided inside the cylindrical rod, the length of the internal threaded hole being greater than the length of the screw rod.

5. A field-of-view expansion device for observing blind spots in gold wire bonding equipment according to claim 2, characterized in that, An opening is provided at one end of the cross guide groove and on the bottom surface of the sliding seat, and a plug is provided on the sliding seat to close the opening.

6. A field-of-view expansion device for observing blind spots in gold wire bonding equipment according to claim 1, characterized in that, The main support crossbar includes a support rod fitted on the outside of the slider and mounted on the sliding seat, a connecting rod coaxially connected to the support rod, and a locking block screwed to the connecting rod and provided with an internal threaded hole.

7. A field-of-view expansion device for observing blind spots in gold wire bonding equipment according to claim 6, characterized in that, The connecting rod includes a smooth rod coaxially connected to the support rod, and a threaded section coaxially connected to the smooth rod and connected to the locking block.

8. A field-of-view expansion device for observing blind spots in gold wire bonding equipment according to claim 6, characterized in that, The support rod has a square cross-section.

9. A method for expanding the field of view in the blind zone of a gold wire bonding device, characterized in that, A field-of-view expansion device for observing blind spots in gold wire bonding equipment, based on any one of claims 1-8, specifically includes the following steps: Step S1: Fix the sliding seat on the gold wire bonding equipment and connect and fix the main support crossbar to the microscope base; Step S2: Microscope adjustment; control the slider to move along the X-axis and / or Y-axis on the sliding seat, and control the main bearing crossbar to rotate around the Z-axis; Step S3: After the microscope position is adjusted, the main bearing crossbar, slider and sliding seat are locked by the locking assembly, and the gold wire bonding equipment can be operated to perform bonding.

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