CCGA tin column cutting equipment and method

Abstract

The invention belongs to the technical field of integrated circuits, and discloses a CCGA tin column cutting device and method.The CCGA tin column cutting device integrates an automatic pay-off device, a wire guiding mechanism, a cutting mechanism and a control console and is controlled by the control console and a control case in a unified and coordinated mode, and continuous automatic precision machining of a CCGA tin column is achieved. The grating assembly monitors and feeds back the state of the solder wire in real time, so that the pay-off assembly can dynamically adjust the tension and the direction, and scraping caused by traditional manual transfer is avoided; the two-way cutter mechanism simultaneously applies force to the two sides of the tin wire for cutting, the defect that the soft tin wire is prone to deformation due to one-way pressing is overcome, and the tin column accurate in size is directly generated without follow-up grinding. By adopting the equipment, the whole process can be automatically operated in a closed-loop manner, friction and manual intervention among working procedures are eliminated, three technical bottlenecks of appearance damage, size out-of-tolerance and complicated working procedures are fundamentally solved, and the product yield and the production efficiency are remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated circuits, specifically to the field of ceramic column grid arrays, and in particular to a CCGA tin column cutting device and method. Background Art

[0002] Currently, integrated circuit packaging technology is rapidly evolving toward high density and high reliability to meet the stringent demands of high-performance computing, 5G communications, autonomous driving, and aerospace and military applications. CCGA (ceramic column grid array), a key high-density packaging technology, leverages the closely matched coefficient of thermal expansion (CTE) between the ceramic substrate and silicon chip, and the flexible stress absorption capabilities of the solder pillars (typically 0.5-2mm in height). CCGA exhibits exceptional thermomechanical stress tolerance, vibration and shock resistance, and high-temperature corrosion resistance in extreme environments (such as space and military applications), making it a core solution for high-end electronic system packaging. Its application has expanded from traditional military applications to civilian markets such as smartphones and automotive electronics. Furthermore, the advancement of three-dimensional packaging and heterogeneous integration technologies has placed even higher demands on the dimensional accuracy (strict requirements in the longitudinal direction) and appearance quality of CCGA solder pillars.

[0003] However, the existing CCGA tin pillar production process faces significant technical bottlenecks. The 90:10 lead-tin alloy used in production is softer than tin wire and far less stable than the conventional 63:37 lead-tin alloy, making it susceptible to surface scratches during cutting and transport. Existing cutting mechanisms require multiple post-cutting and grinding steps, primarily performed manually. This not only results in low production efficiency but also makes it difficult to ensure accurate tin pillar length dimensions. Furthermore, friction between tin pillars in the receiving hopper exacerbates damage, ultimately resulting in low product yield. Furthermore, traditional processes are not well-suited to the characteristics of the 90:10 low-melting-point tin pillars, further amplifying the risk of cosmetic defects and dimensional deviations.

[0004] It can be seen that the products produced by the existing CCGA tin pillar cutting method have problems such as poor appearance quality, insufficient dimensional accuracy and complicated production process. Summary of the Invention

[0005] The present invention provides a CCGA tin column cutting device and method. The use of the cutting device effectively ensures the size and appearance of the tin column, and improves the quality and efficiency of the product.

[0006] In order to achieve the above object, the present invention adopts the following technical contents: A CCGA tin column cutting device comprises: a control chassis; The control box is provided with an automatic wire-releasing device, a wire-guiding mechanism, a cutting mechanism and a control console; The console is connected to the control chassis, and the console is used to send control instructions to the control chassis; The automatic wire-releasing device, the wire-guiding mechanism and the cutting mechanism are respectively connected to the control box; The control box can control the automatic wire-releasing device, the wire-guiding mechanism and the cutting mechanism respectively according to the control instructions received; The automatic wire-paying device includes a grating component and a wire-paying component. The grating component is used to send a grating signal. The wire-paying component is used to adjust the tension and wire-paying direction of the tin wire to be cut according to the grating signal and automatically release the tin wire. The guide wire mechanism is used to guide the tin wire so as to be transported to the cutting mechanism; The cutting mechanism includes a bidirectional cutting mechanism, which can cut the tin wire synchronously in opposite directions of the tin wire to obtain CCGA tin columns.

[0007] Furthermore, the automatic wire-releasing device includes a bracket plate; the bracket plate is fixed on the control chassis; The wire-paying assembly includes a wire-spinning motor and a lifting motor fixed on the support plate; The rotating motor is used to adjust the tension of the tin wire to be cut into CCGA tin pillars; the lifting motor is used to adjust the pay-off direction of the tin wire; The grating assembly includes a grating fixed on the support plate, a middle grating and a lower limit area grating; The upper limit zone grating, middle limit zone grating and lower limit zone grating are used to send tin wire position signals to the control chassis, so that the control chassis controls the wire rotation motor and lifting motor according to the tin wire position signals to achieve tin wire tension adjustment and wire pay-off direction adjustment.

[0008] Furthermore, the wire mechanism includes a support frame fixed to the control chassis; The support frame is provided with a lifting cylinder and a V-shaped wheel; The lifting cylinder is connected to the V-shaped wheel, and the control chassis can adjust the position of the V-shaped wheel through the lifting cylinder. The tin wire passes through the middle of the V-shaped wheel and enters the cutting mechanism to achieve damage-free guidance of the tin wire.

[0009] Furthermore, the cutting mechanism includes a fixed bracket; The fixing bracket is fixed on the control chassis; The bidirectional cutter mechanism includes a bidirectional screw rod group, which is fixed on a fixed bracket; the bidirectional screw rod group includes a cutting servo motor and a bidirectional screw rod; the output end of the cutting servo motor is connected to the bidirectional screw rod; The bidirectional screw rod is provided with two symmetrically arranged sliders; one slider is provided with a lower cutter, and the other slider is provided with an upper cutter, and the cutting directions of the lower cutter and the upper cutter are arranged oppositely; The cutting servo motor can drive the lower cutter and the upper cutter to move synchronously relative to each other through a bidirectional lead screw, so as to cut the tin wire.

[0010] Furthermore, the bidirectional screw rod assembly is further provided with a wire clamping cylinder and a pre-compression cylinder; The wire clamping cylinder can clamp the tin wire to be cut; The pre-pressing cylinder is fixed on the same side of the upper cutter, and the end thereof is connected to a pre-pressing block; After the wire clamping cylinder clamps the tin wire to be cut, the pre-pressing cylinder drives the pre-pressing block to press the tin wire tightly; A wire pulling servo motor is also fixed on the bracket, and the output end of the wire pulling servo motor is connected to a wire pulling clamp cylinder; The wire pulling clamp cylinder cooperates with the wire clamping cylinder to clamp and release the tin wire. The wire pulling and clamping cylinder can pull out tin wire of a preset size and transport it to the wire clamping cylinder to be cut by the bidirectional cutting mechanism.

[0011] Furthermore, a guide sleeve is provided on the same side of the lower cutter, and a guide post is provided on the same side of the upper cutter. The guide sleeve and the guide post are both connected to the corresponding slider, and the guide sleeve and the guide post cooperate with each other.

[0012] Furthermore, the slide block is provided with a connected guide telescopic cylinder and a guide block; the guide block is provided around the lower cutter and can position the tin wire in an extended state.

[0013] Furthermore, the cutting mechanism further includes a material receiving mechanism; The material receiving mechanism includes a vacuum generator, a material receiving pipe, a material receiving cylinder and a filter container; The output end of the receiving cylinder is connected to the receiving pipe, and can drive the receiving pipe to move so that the feeding port of the receiving pipe is aligned with the cutting output end of the bidirectional cutting mechanism; the receiving pipe is connected to the filtering container; The outlet direction of the vacuum generator is set toward the cutting output end of the bidirectional cutter mechanism, and the tin wire at the cutting output end of the bidirectional cutter mechanism is adsorbed into the receiving tube through the generated suction force and collected through the filter container.

[0014] Furthermore, the console includes a human-machine interface, a start button, a stop button and an emergency stop button; The human-machine interface, the start button, the stop button and the emergency stop button are respectively connected to the control box.

[0015] A working method of a CCGA tin pillar cutting device, based on the above CCGA tin pillar cutting device, comprises: Send control instructions to the control chassis through the console; The control box starts or stops the automatic pay-off device, wire guide mechanism, cutting mechanism and control console according to the control instructions; The pay-off component in the automatic pay-off device adjusts the tension and pay-off direction of the tin wire to be cut according to the grating signal and automatically releases the tin wire; The tin wire transmitted by the automatic pay-off device is guided by the guide mechanism to be transported to the cutting mechanism; The bidirectional cutter mechanism of the cutting mechanism is used to synchronously cut the tin wire in the opposite directions of the tin wire to obtain CCGA tin columns.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a CCGA tin column cutting device. This device realizes continuous automated precision processing of CCGA tin columns by integrating an automatic pay-off device, a wire mechanism, a cutting mechanism and a control console, and is uniformly coordinated and controlled by the control console and the control chassis. The grating component monitors and feedbacks the status of the tin wire in real time, so that the pay-off component can dynamically adjust the tension and direction, avoiding the scratches caused by traditional manual transfer; the bidirectional cutter mechanism applies force to both sides of the tin wire at the same time to cut, overcoming the defect that the soft tin wire is easily deformed under unidirectional pressure, and directly generates tin columns with precise dimensions without the need for subsequent grinding. The use of this equipment can make the entire process run in an automated closed loop, eliminating friction and manual intervention between processes, and fundamentally solving the three major technical bottlenecks of appearance damage, dimensional deviation and complicated processes, significantly improving product yield and production efficiency.

[0017] Preferably, the automatic pay-off mechanism in this invention utilizes a rotating motor, a lifting motor, and a multi-grating zone assembly to achieve precise tension and direction control. The grating signal monitors the position of the solder wire in real time, controlling the chassis-linked motor to adjust the pay-off process, ensuring constant tension and stable direction. This prevents damage to the solder wire caused by tension fluctuations, such as loosening or over-tightening. This fundamentally reduces the risk of deformation and scratching of soft materials during transport, thereby improving the stability of solder wire processing and overall quality consistency.

[0018] Preferably, the guide mechanism in this invention utilizes V-shaped wheels and a lifting cylinder to achieve damage-free guided conveyance of the solder wire. The V-shaped wheel design reduces contact area, while the lifting cylinder flexibly adjusts its position to accommodate varying wire diameters, eliminating the friction and extrusion damage associated with traditional guides. This ensures smooth transition of the soft solder wire during conveyance, adapting to the characteristics of low-melting-point materials, significantly reducing the likelihood of surface scratches, and enhancing positioning accuracy prior to cutting.

[0019] Preferably, in the present invention, a bidirectional screw assembly in the cutting mechanism drives the upper and lower cutters for synchronous cutting. The bidirectional screws, driven by a servo motor, drive the slides symmetrically, allowing the cutters to apply force simultaneously in opposite directions, evenly distributing cutting stress and avoiding tin wire distortion or burrs caused by unidirectional cutting. This design directly produces precisely dimensioned tin pillars without the need for post-process grinding, thereby eliminating dimensional deviations and complex processes, and improving cutting efficiency and quality consistency.

[0020] The present invention preferably incorporates a wire clamping cylinder, a preload cylinder, and a wire pulling servo motor for wire clamping, compression, and length control. The clamping cylinder secures the wire, the preload cylinder eliminates vibration, and the wire pulling mechanism precisely pulls the wire to the preset length, ensuring the exact cutting point. This automated closed-loop control eliminates the accumulated errors associated with manual operation, significantly improving dimensional accuracy and reducing the risk of cosmetic damage caused by unstable positioning.

[0021] Preferably, in the present invention, the cutter's motion stability is enhanced by the cooperation of a guide sleeve and a guide pin. The guiding mechanism of the guide pin and sleeve constrains the cutter's trajectory, reducing wobbling or deviation during the cutting process, thereby maintaining a balanced distribution of cutting force. This effectively prevents deformation or tearing of the soft solder wire during cutting, improving product appearance quality and dimensional consistency.

[0022] Preferably, in the present invention, a guide telescopic cylinder and guide block are installed on the slider to precisely position the solder wire. When the guide block extends, it physically limits the solder wire, ensuring it remains in place before cutting, thus preventing cutting deviations caused by wire movement. This optimizes cutting accuracy, reduces dimensional deviations and cosmetic defects, and simplifies the process.

[0023] Preferably, the material collection mechanism in the present invention includes a vacuum generator, a collection tube, and a filter container. Vacuum suction gently captures the cut tin pillars and directly transports them to a collection point, avoiding collisions and friction in the hopper. This adapts to the fragile nature of soft tin pillars, eliminates secondary damage associated with traditional collection methods, and significantly improves product yield and appearance integrity.

[0024] Preferably, in the present invention, the control console is equipped with a human-machine interface and operating buttons for convenient control. The human-machine interface intuitively displays parameters, and the buttons quickly start, stop, or emergency stop the equipment. Centralized management reduces operational complexity and response delays. This improves production safety and process efficiency while reducing yield fluctuations caused by human error.

[0025] The present invention also provides a cutting method for CCGA tin column cutting equipment. Based on the above-mentioned CCGA tin column cutting equipment, this method sends instructions through the control console, and the control chassis coordinates to start the automatic wire-paying device, the wire mechanism and the cutting mechanism, so as to realize the continuous closed-loop production of automatic adjustment of tin wire tension, guided transportation and two-way synchronous cutting. The grating monitoring dynamically adjusts the tension and wire-paying direction to avoid external force scratching of the soft tin wire during manual transportation; the synchronous force application of the bidirectional cutter offsets the risk of material deformation caused by unidirectional cutting, and directly generates dimensionally stable tin columns without the need for post-grinding; the automated process integration reduces process connection and manual intervention, and fundamentally eliminates the friction of material connection and the accumulation of dimensional deviations. The use of this method solves the problems of appearance damage, dimensional deviation and inefficiency of multiple processes, and significantly improves product yield, appearance quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the overall structure of a CCGA tin column cutting device provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of an automatic pay-off device provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a wire guide mechanism provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of the main cutting blade portion in the cutting mechanism provided in an embodiment of the present invention; Figure 5 A schematic structural diagram of a lower cutter in a cutting mechanism provided in an embodiment of the present invention; Figure 6 A schematic structural diagram of an upper cutter in a cutting mechanism provided in an embodiment of the present invention; Figure 7 A schematic structural diagram of a tin wire drawing assembly in a cutting mechanism provided in an embodiment of the present invention; Figure 8 A schematic structural diagram of a material receiving mechanism provided in an embodiment of the present invention.

[0027] Reference numerals: 1. Automatic pay-off device; 2. Conductor mechanism; 3. Cutting mechanism; 4. Control console; 5. Control cabinet; 100, rotary motor; 101, lifting motor; 102, upper limit zone grating; 103, middle position grating; 104, lower limit zone grating; 105, bracket plate; 200, support frame; 201, lifting cylinder; 202, V-shaped wheel; 300, two-way screw group; 301, wire clamping cylinder; 302, pre-pressing cylinder; 303, material receiving cylinder; 304, vacuum generator; 305, wire clamping cylinder; 306, wire pulling telescopic cylinder; 307, guide telescopic cylinder; 3 08. Wire pulling servo motor; 309. Fixed bracket; 310. Guide sleeve; 311. Filter container; 312. Material receiving tube; 313. Pre-pressing block; 315. Guide column; 316. Guide block; 317. Lower cutter; 318. Upper cutter; 320. Guide sleeve; 321. Guide telescopic cylinder; 322. Slider; 401. Human-machine interface; 402. Alarm; 403. Start button; 404. Stop button; 405. Emergency stop button; 500. Control chassis body. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use. These terms are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In order to further understand the technical solution of the present invention, the following terms are explained: CCGA (Chip-on-Ceramic Grid Array) is an abbreviation for ceramic column grid array packaging, a type of surface mount technology. It achieves high-density electrical connections between chips and circuit boards by arranging metal pillars (rather than traditional solder balls) as pins on a ceramic substrate.

[0036] This embodiment provides a CCGA tin column cutting device and method, wherein the device body is a control chassis 5, on the surface of which are integratedly mounted an automatic wire-paying device 1, a wire guide mechanism 2, a cutting mechanism 3, and a control console 4. The control console 4 is connected to the control chassis 5 via a cable. The operator can send instructions via the start button 403, stop button 404, or emergency stop button 405 on the control chassis, and monitor the status through the human-machine interface 401. The automatic wire-paying device 1, the wire guide mechanism 2, and the cutting mechanism 3 are all connected to the control chassis 5 via a line, which coordinates their actions. The control console 4 also includes an alarm 402 for sounding an alarm in an emergency to remind the operator to take emergency measures.

[0037] For example, the automatic pay-off device 1 has a support plate 105 mounted on the control chassis 5. The support plate 105 is equipped with a rotating motor 100 and a lifting motor 101. The support plate 105 also holds vertically distributed upper limit gratings 102, middle limit gratings 103, and lower limit gratings 104. These gratings monitor the position of the solder wire in real time. The control chassis 5 uses this information to drive the rotating motor 100 to precisely control the solder wire tension and simultaneously controls the lifting motor 101 to adjust the pay-off angle, ensuring a constant and stable solder wire tension output.

[0038] For example, the support frame 200 of the wire guide mechanism 2 is fixed to the control chassis 5, and a lifting cylinder 201 and a V-shaped wheel 202 are mounted on the support frame 200. The lifting cylinder 201 is controlled to adjust the height of the V-shaped wheel 202, and the tin wire passes through the groove of the V-shaped wheel 202 without friction, achieving smooth guidance and precise delivery to the cutting mechanism 3.

[0039] Exemplarily, the cutting mechanism 3 is fixed to the control chassis 5 via a fixed bracket 309, and the core component is a bidirectional screw assembly 300. The bidirectional screw assembly 300 includes a cutting servo motor and a bidirectional screw driven by it, and sliders 322 are symmetrically assembled on both sides of the screw. One slider 322 fixes the lower cutter 317, and the other slider 322 fixes the upper cutter 318, with the cutting edges of the two blades facing each other. When the cutting servo motor is started, it drives the bidirectional screw to rotate, so that the two sliders 322 drive the lower cutter 317 and the upper cutter 318 to move synchronously in opposite directions to complete the cutting. The lower cutter 317 is equipped with a guide sleeve 320 on the side, and the upper cutter 318 is equipped with a guide column 315 on the side. The two are inserted together to ensure the accuracy of the cutter movement trajectory. The slider 322 is also equipped with a guide telescopic cylinder 321 and a guide block 316. When the guide block 316 is extended, it can enclose the positioning tin wire.

[0040] For example, a wire clamping cylinder 301 and a preload cylinder 302 are located adjacent to the bidirectional screw assembly 300. After the wire clamping cylinder 301 grips the wire to be cut, the preload cylinder 302 drives the preload block 313 at its end to compress the wire, eliminating vibration. A wire pulling servo motor 308 is mounted on the fixed bracket 309, its output connected to the wire clamping cylinder 305. The wire clamping cylinder 305 and the wire clamping cylinder 301 work together to perform the "clamping and releasing" action, with the wire pulling servo motor 308 accurately pulling the preset length of wire to the cutting line.

[0041] For example, the cut tin columns are processed by a vacuum collecting mechanism: the collecting cylinder 303 drives the collecting tube 312 to move to the cutting outlet, and the vacuum generator 304 is started to generate negative pressure airflow, which gently sucks the tin columns into the collecting tube 312 and transports them to the filter container 311 through the pipeline for centralized collection to avoid collision damage.

[0042] In this example, the equipment workflow is as follows: the operator starts the system through the console 4, and the control chassis 5 activates the automatic wire-releasing device 1. The grating component monitors the position of the tin wire and feeds back a signal, regulating the wire-rotating motor 100 and the lifting motor 101 to achieve constant tension wire-releasing. The tin wire is guided by the V-wheel 202 of the wire guide mechanism 2 and enters the cutting mechanism 3. The wire-pulling servo motor 308 cooperates with the wire-pulling clamp cylinder 305 and the wire-clamping cylinder 301 to pull out the fixed-length tin wire. After the wire-clamping cylinder 301 locks the wire, the pre-pressing block 313 presses it into position. The cutting servo motor drives the bidirectional screw assembly 300, driving the lower cutter 317 and the upper cutter 318 to cut synchronously in opposite directions. The cut tin column is adsorbed by the vacuum generator 304 and falls into the filter container 311 through the receiving pipe 312 for collection.

[0043] The technical solution provided in this embodiment will be specifically implemented and applied in conjunction with the accompanying drawings, as follows: like Figure 1 As shown, this embodiment provides a CCGA solder column cutting device, including an automatic wire-paying device 1 , a wire mechanism 2 , a cutting mechanism 3 and a control console 4 provided on a control chassis 5 .

[0044] like Figure 2 As shown, in this embodiment, the entire automatic wire-releasing device 1 is fixed on a bracket plate 105, and the torque-carrying wire-rotating motor 100 automatically adjusts the speed and the positive and negative directions according to the tension of the tin wire; at the same time, the lifting motor 101 automatically adjusts the upper and lower positions of the tin wire according to the signals of three gratings, namely the upper limit area grating 102, the middle grating 103, and the lower limit area grating 104, thereby realizing the function of automatic wire-releasing.

[0045] like Figure 3 As shown, in this embodiment, the wire mechanism 2 includes a non-metallic V-wheel 202 and a lifting cylinder 201; the V-wheel 202 and the lifting cylinder 201 are assembled on the wire support frame 200, so that the position of the solder wire is correct without damaging the surface of the wire body.

[0046] Combine Figure 4 、 Figure 5 and Figure 6 As shown, the cutting mechanism 3 includes a wire pulling servo motor 308, which drives a bidirectional screw assembly 300 to clamp the tin wire via a wire clamping cylinder 301. The pre-pressing cylinder 302 drives a pre-pressing block 313 to pre-compress the tin wire, thereby providing the necessary conditions for the subsequent lower and upper cutters 317 and 318 to squeeze and shear. This also requires the preliminary positioning of the guide post 315 and guide sleeve 320. The cutting process is accomplished by a bidirectional screw assembly driven by a motor, providing the power for cutting. Figure 5The central guide telescopic cylinder 321 drives the guide block 316, providing a guide post during feeding and subsequent material extraction, and allowing space for the material extraction tube 312. The cutting mechanism 3 features a bidirectional screw assembly 300, which enables the upper and lower cutters 318 and 317 to move toward the center simultaneously for cutting. Conventional cutting involves the upper cutter 318 moving downward, while the lower cutter 317 remains stationary.

[0047] like Figure 7 As shown, in this embodiment, the tin wire pulling structure includes a fixed bracket 309, which supports a wire pulling servo motor 308 responsible for pulling the wire. The wire pulling clamping cylinder 305 cooperates with the front wire clamping cylinder 301 to clamp and loosen the tin wire, and at the same time, the front and rear positions are exchanged and placed with the cooperation of the wire pulling telescopic cylinder 306.

[0048] like Figure 8 As shown, in this embodiment, the material collection mechanism includes a vacuum generator 304. The vacuum generator 304 generates active suction, which is driven by a material collection cylinder 303 to drive a material collection tube 312. This vacuum force is then transferred to the product, sucking it into a filter container 311. When the set quantity of product is reached, the filter container 311 is replaced to remove the product, resulting in a finished product.

[0049] For example, a CCGA solder pillar cutting device provided in this embodiment is specifically implemented to cut CCGA high-lead solder pillars of model 08, wherein the high-lead solder pillars have a diameter of 0.80+ / -0.02 and a length of 2.2+ / -0.03. The specific cutting process is as follows: After the tin wire reel is securely placed on the support disc of the rotary motor 100, the tin pillar is manually pulled through the upper limit grating 102, the middle grating 103, and the lower limit grating 104 signals. It then passes through the V-shaped wire pulley 202 and the guide sleeve 310. With the wire clamping cylinder 301 clamping the tin wire, the start button 403 is activated, and the cutting machine automatically enters the next process flow. The tin pillar is automatically pulled by the wire clamping cylinder 305 to the required precise size of 5.0 (including the end size). Next, the bidirectional lead screw assembly 300 performs a precise closing operation. The closing operation involves several precise steps. First, the preload cylinder 302 pushes the preload block 313 to precisely secure the high-lead tin pillar being cut, a step crucial for accurate cutting. Simultaneously, the guide pillar 315 and guide sleeve 320 undergo a second precise positioning during the closing operation. In the second step, the upper and lower cutters 318 and 317 move simultaneously toward the center to perform the cut. Together with the pre-pressing block 313, these two cutters form a fully enclosed extrusion cut. In the third step, after the cut is completed, the upper and lower cutters 318 and 317 are released, while the pre-pressing block 313 remains pressed together. Once the product is drawn into the receiving tube 312, the pre-pressing block 313 is released. After the above steps are completed, the guide telescopic cylinder 321 moves the guide block 316 downward to create space for the product to be removed. The receiving cylinder 303, in sync with the vacuum generator 304, pushes the filter container 311 and suction pipe 312 toward the CCGA high-lead tin column beneath the pre-pressing block 313 for collection. Simultaneously, the pre-pressing block 313 is released. Finally, the product enters the filter container 311. Product cutting and collection are now complete, and the other components return to their original positions for the next product cutting cycle.

[0050] As can be seen, this cutting machine first loads CCGA-specific solder pillars onto a carrier tray, which is then fed to the cutting mechanism via a constant-tension automatic pay-off mechanism. The wire feed mechanism straightens the solder pillars without deformation, eliminating intermediate pressure rollers and the risk of crushing, resulting in a high-quality appearance. Within the cutting mechanism, the solder pillars are first positioned by high-precision dual guide pins before being simultaneously extruded and cut by dual cutters. This results in highly precise CCGA solder pillars. Furthermore, the upper cutter incorporates an anti-collision blade guide angle, ensuring precise blade clearance. This ensures safe and efficient operation, making it highly suitable for widespread adoption.

[0051] In summary, the CCGA tin pillar cutting device and method provided by the present invention has the following advantages over traditional cutting methods: The present invention centrally controls the coordinated operation of the automatic pay-off device, the guide wire mechanism and the cutting mechanism through a control chassis. The automatic pay-off device uses a grating component to monitor and feedback the position of the tin wire in real time, and realizes dynamic adjustment of the tension and pay-off direction through a wire rotating motor and a lifting motor. The guide wire mechanism uses a V-wheel and a lifting cylinder to ensure the damage-free guided transportation of the tin wire. The cutting mechanism adopts a synchronous cutter design driven by a bidirectional lead screw group, combined with a wire clamping cylinder, a pre-load cylinder and a wire pulling servo motor to achieve precise positioning and cutting, and cooperates with a vacuum material collecting mechanism to gently collect the finished products. The entire set of equipment forms a fully automated closed-loop process from pay-off, guiding, cutting to material collecting, effectively solving the technical problems of easy damage, dimensional deviation and complicated procedures in the processing of 90:10 soft tin wire, and significantly improving product yield, dimensional accuracy and production efficiency.

[0052] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention.

Claims

1. A CCGA tin column cutting device, characterized in that: include: Control chassis (5); The control box (5) is provided with an automatic wire-releasing device (1), a wire-guiding mechanism (2), a cutting mechanism (3) and a control console (4); The console (4) is connected to the control chassis (5), and the console (4) is used to send control instructions to the control chassis (5); The automatic wire-releasing device (1), the wire-guiding mechanism (2), and the cutting mechanism (3) are respectively connected to the control box (5); The control box (5) can control the automatic wire-releasing device (1), the wire-guiding mechanism (2) and the cutting mechanism (3) respectively according to the received control instructions; The automatic wire-releasing device (1) comprises a grating component and a wire-releasing component, wherein the grating component is used to send a grating signal; the wire-releasing component is used to adjust the tension and wire-releasing direction of the tin wire to be cut according to the grating signal and automatically release the tin wire; The guide wire mechanism (2) is used to guide the tin wire so as to be transported to the cutting mechanism (3); The cutting mechanism (3) comprises a bidirectional cutting mechanism, which can cut the tin wire synchronously in the opposite directions of the tin wire to obtain CCGA tin columns.

2. The CCGA tin pillar cutting device according to claim 1, wherein: The automatic wire-releasing device (1) comprises a bracket plate (105); the bracket plate (105) is fixed on the control chassis (5); The pay-off assembly comprises a line-rotating motor (100) and a lifting motor (101) fixed on a support plate (105); The rotating motor (100) is used to adjust the tension of the tin wire of the CCGA tin column to be cut; the lifting motor (101) is used to adjust the pay-off direction of the tin wire; The grating assembly comprises an upper limit area grating (102), a middle grating (103) and a lower limit area grating (104) fixed on a support plate (105); The upper limit area grating (102), the middle limit area grating (103) and the lower limit area grating (104) are used to send a tin wire position signal to the control chassis (5), so that the control chassis (5) controls the wire rotation motor (100) and the lifting motor (101) according to the tin wire position signal to achieve tension adjustment and wire release direction adjustment of the tin wire.

3. The CCGA tin pillar cutting device according to claim 1, characterized in that: The wire mechanism (2) comprises a support frame (200) fixed on the control box (5); The support frame (200) is provided with a lifting cylinder (201) and a V-shaped wheel (202); The lifting cylinder (201) is connected to the V-shaped wheel (202), and the control box (5) can adjust the position of the V-shaped wheel (202) through the lifting cylinder (201). The tin wire passes through the middle of the V-shaped wheel (202) and enters the cutting mechanism (3), so as to achieve damage-free guidance of the tin wire.

4. The CCGA tin pillar cutting device according to claim 1, characterized in that: The cutting mechanism (3) comprises a fixed bracket (309); The fixing bracket (309) is fixed on the control chassis (5); The bidirectional cutter mechanism comprises a bidirectional screw rod group (300), the bidirectional screw rod group (300) being fixed on a fixed bracket (309); the bidirectional screw rod group (300) comprises a cutting servo motor and a bidirectional screw rod; the output end of the cutting servo motor is connected to the bidirectional screw rod; Two symmetrically arranged sliders (322) are provided on the bidirectional screw rod; a lower cutter (317) is provided on one slider (322), and an upper cutter (318) is provided on the other slider (322); the cutting directions of the lower cutter (317) and the upper cutter (318) are arranged opposite to each other; The cutting servo motor can drive the lower cutter (317) and the upper cutter (318) to move synchronously relative to each other through a bidirectional lead screw, so as to cut the tin wire.

5. The CCGA tin pillar cutting device according to claim 4, characterized in that: The bidirectional screw rod assembly (300) is further provided with a wire clamping cylinder (301) and a pre-compression cylinder (302); The wire clamping cylinder (301) is capable of clamping the tin wire to be cut; The pre-pressing cylinder (302) is fixed on the same side of the upper cutter (318), and the end thereof is connected to a pre-pressing block (313); After the wire clamping cylinder (301) clamps the tin wire to be cut, the pre-pressing cylinder (302) drives the pre-pressing block (313) to press the tin wire; A wire pulling servo motor (308) is also fixed on the bracket (309), and the output end of the wire pulling servo motor (308) is connected to a wire pulling clamp cylinder (305); The wire pulling clamp cylinder (305) cooperates with the wire clamping cylinder (301) to perform a clamping and loosening pulling operation on the tin wire; The wire-drawing clamp cylinder (305) can draw out tin wire of a preset size and transport it to the wire-clamping cylinder (301) to be cut by the bidirectional cutting mechanism.

6. The CCGA tin pillar cutting device according to claim 4, characterized in that: A guide sleeve (320) is provided on the same side of the lower cutter (317), and a guide post (315) is provided on the same side of the upper cutter (318). The guide sleeve (320) and the guide post (315) are both connected to corresponding sliders (322), and the guide sleeve (320) and the guide post (315) cooperate with each other.

7. The CCGA tin pillar cutting device according to claim 4, characterized in that: The slider (322) is also provided with a connected guide telescopic cylinder (321) and a guide block (316); the guide block (316) is provided around the lower cutter (317) and can position the tin wire in an extended state.

8. The CCGA tin pillar cutting device according to claim 4, characterized in that: The cutting mechanism (3) further includes a material receiving mechanism; The material receiving mechanism comprises a vacuum generator (304), a material receiving pipe (312), a material receiving cylinder (303) and a filtering container (311); The output end of the receiving cylinder (303) is connected to the receiving pipe (312), and can drive the receiving pipe (312) to move so that the inlet of the receiving pipe (312) is aligned with the cutting output end of the bidirectional cutting mechanism; the receiving pipe (312) is connected to the filtering container (311); The outlet direction of the vacuum generator (304) is arranged toward the cutting output end of the bidirectional cutter mechanism, and the generated suction force adsorbs the tin wire at the cutting output end of the bidirectional cutter mechanism into the receiving tube (312) and is collected through the filtering container (311).

9. The CCGA tin pillar cutting device according to claim 1, characterized in that: The console (4) includes a human-machine interface (401), a start button (403), a stop button (404) and an emergency stop button (405); The human-machine interface (401), the start button (403), the stop button (404) and the emergency stop button (405) are respectively connected to the control box (5).

10. A working method of a CCGA tin pillar cutting device, based on the CCGA tin pillar cutting device according to any one of claims 1 to 9, characterized in that: include: Sending control instructions to the control box (5) through the console (4); The control box (5) starts or stops the automatic wire-releasing device (1), the wire-guiding mechanism (2), the cutting mechanism (3) and the control console (4) according to the control instructions; The wire-releasing component in the automatic wire-releasing device (1) adjusts the tension and wire-releasing direction of the tin wire to be cut according to the grating signal and automatically releases the tin wire; The tin wire transmitted by the automatic wire-releasing device (1) is guided by the guide mechanism (2) so as to be transported to the cutting mechanism (3); The bidirectional cutting mechanism of the cutting mechanism (3) is used to cut the tin wire synchronously in the opposite directions of the tin wire to obtain the CCGA tin column.

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