Protective device

Abstract

The utility model relates to the technical field of chip packaging, in particular to a protection device used for preventing solder paste on a scraper from falling to the surface of a product. The protection device comprises a support; the isolation plate is movably arranged on the bracket and is positioned below the scraper; the driving mechanism is arranged on the support and connected to the isolation plate, and the driving mechanism is used for driving the isolation plate to move relative to the support when the scraper moves so that the isolation plate can follow the scraper. According to the protection device, solder paste on the scraper can be prevented from falling onto the surface of a product, so that the product can be prevented from being scrapped due to pollution of the solder paste, the production cost is reduced, and the satisfaction degree of customers is guaranteed.

Description

Technical Field

[0001] This application relates to the field of chip packaging technology, and more specifically, to a protective device for preventing solder paste on a scraper from falling onto the surface of a product. Background Technology

[0002] In semiconductor packaging, printing equipment (such as solder paste printers) is typically used for the solder paste printing process. A solder paste printer generally consists of mechanisms for mounting the stencil, applying solder paste, imprinting, and conveying the circuit board. Its working principle is as follows: the circuit board to be printed is first fixed on the printing positioning table, and then the left and right squeegees of the printer move up, down, forward, and backward, applying the solder paste through the stencil onto the corresponding pads.

[0003] However, during the printing process, solder paste adhering to the squeegee may fall onto the product and tooling surfaces, causing contamination that is difficult to detect and ultimately leading to product scrap. This not only increases production costs but also reduces customer satisfaction. Utility Model Content

[0004] This application provides at least one protective device that can prevent solder paste on the scraper from falling onto the product surface, thereby avoiding product scrapping due to solder paste contamination, reducing production costs, and ensuring customer satisfaction.

[0005] This application provides a protective device, the protective device comprising:

[0006] support;

[0007] A partition plate, which is movably disposed on the bracket and located below the scraper;

[0008] A drive mechanism is disposed on the bracket and connected to the isolation plate. The drive mechanism is used to drive the isolation plate to move relative to the bracket when the scraper moves, so that the isolation plate follows the scraper.

[0009] In one alternative embodiment, the partition plate is movable relative to the support in both the horizontal and vertical directions.

[0010] In one optional embodiment, the isolation plate is provided with a connecting assembly, the connecting assembly including a first mounting block and a second mounting block, the first mounting block being disposed on the bracket and movable relative to the bracket in the horizontal direction, the second mounting block being fixedly connected to the isolation plate, and the second mounting block being disposed on the first mounting block and movable relative to the first mounting block in the height direction.

[0011] In one alternative embodiment, the connecting components are respectively provided at both lateral ends of the isolation plate.

[0012] In one optional embodiment, a first mounting portion and a second mounting portion are respectively provided at the two lateral ends of the isolation plate. The first mounting portion and the second mounting portion have different heights, and the connecting component is provided at the top of the first mounting portion and the second mounting portion respectively.

[0013] In one optional embodiment, the first mounting block moves horizontally relative to the bracket under the action of the driving mechanism, and the second mounting block slides in conjunction with the guide hole provided in the bracket;

[0014] The guide hole can guide the second mounting block to move relative to the first mounting block in the height direction when the first mounting block moves relative to the bracket in the horizontal direction.

[0015] In one optional embodiment, the guide hole includes a first inclined section, a horizontal section, and a second inclined section connected in sequence. When the second mounting block is slidably engaged with the horizontal section, the second mounting block is fixed relative to the first mounting block. When the second mounting block is slidably engaged with the first inclined section / second inclined section, the second mounting block moves relative to the first mounting block in the height direction.

[0016] In one alternative implementation, the drive mechanism is one of a pneumatic actuator, an electric actuator, and a hydraulic actuator.

[0017] In one optional embodiment, the protective device further includes:

[0018] A controller is electrically connected to the drive mechanism and is used to control the drive mechanism to drive the isolation plate so that the isolation plate follows the scraper.

[0019] In one optional embodiment, the protective device further includes:

[0020] A positioner is disposed on the bracket and electrically connected to the controller. The positioner is used to locate the position of the isolation plate so that the controller controls the drive mechanism to drive or stop driving the isolation plate according to the position.

[0021] The above-mentioned technical solution of this application has the following beneficial technical effects:

[0022] The protective device of this application embodiment has a partition plate that moves below the squeegee. This partition plate prevents solder paste on the squeegee from falling onto the product surface, thereby avoiding product scrap due to solder paste contamination, reducing production costs, and ensuring customer satisfaction. Furthermore, compared to using a fixed partition plate, this partition plate moves with the squeegee, which helps reduce the size of the partition plate and prevents interference between the partition plate and the squeegee or other equipment, thus avoiding affecting the operation of the squeegee.

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This illustration shows a structural schematic diagram of a protective device provided in an embodiment of this application;

[0026] Figure 2 It shows Figure 1 The front view;

[0027] Figure 3 It shows Figure 1 Side view;

[0028] Figure 4 It shows Figure 1 A schematic diagram showing the interaction between the protective device and the scraper;

[0029] Figure label:

[0030] 100, bracket; 110, mounting hole; 120, horizontal slide rail; 130, guide hole; 131, first inclined section; 132, horizontal section; 133, second inclined section;

[0031] 200, Isolation plate; 210, First mounting part; 220, Second mounting part; 230, Connecting assembly; 231, First mounting block; 232, Second mounting block; 232a, Connecting shaft;

[0032] 300. Drive mechanism;

[0033] 400. Scraper. Detailed Implementation

[0034] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0035] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In semiconductor packaging, printing equipment (such as solder paste printers) is typically used for the solder paste printing process. A solder paste printer generally consists of mechanisms for mounting the stencil, applying solder paste, imprinting, and conveying the circuit board. Its working principle is as follows: the circuit board to be printed is first fixed on the printing positioning table, and then the left and right squeegees of the printer move up, down, forward, and backward, applying the solder paste through the stencil onto the corresponding pads.

[0040] However, during the printing process, solder paste adhering to the squeegee may fall onto the product and tooling surfaces, causing contamination that is difficult to detect and ultimately leading to product scrap. This not only increases production costs but also reduces customer satisfaction.

[0041] Therefore, this application provides a protective device to prevent solder paste on a scraper from falling onto the product surface.

[0042] refer to Figures 1 to 4 The image shows a protective device comprising: a bracket 100, an isolation plate 200, and a drive mechanism 300.

[0043] The bracket 100 is fixedly disposed relative to the printing apparatus. For example, the bracket 100 may be mounted on the printing apparatus.

[0044] The isolation plate 200 is movably disposed on the bracket 100 and located below the squeegee 400. The isolation plate 200 is used to isolate the squeegee 400 and the product to prevent solder paste on the squeegee 400 from falling onto the product surface.

[0045] The drive mechanism 300 is disposed on the bracket 100 and connected to the isolation plate 200. The drive mechanism 300 is used to drive the isolation plate 200 to move relative to the bracket 100 when the scraper 400 moves, so that the isolation plate 200 can follow the scraper 400 and achieve isolation of the scraper 400 at different positions.

[0046] Specifically, the protective device includes a partition plate 200 that moves below the squeegee 400. This partition plate 200 prevents solder paste from falling onto the product surface, thus avoiding product scrap due to solder paste contamination, reducing production costs, and ensuring customer satisfaction. Furthermore, compared to using a fixed partition, the partition plate 200 moves with the squeegee 400, reducing its size and preventing interference between the partition plate 200 and the squeegee 400 or other equipment, which could affect the operation of the squeegee 400.

[0047] refer to Figure 2In some embodiments, the bracket 100 is provided with mounting holes 110 for fixing the bracket 100. For example, the bracket 100 is provided with mounting holes 110 that penetrate its thickness. There are two mounting holes 110, which are symmetrically distributed along the width direction of the bracket 100 and can be fixed to the printing equipment by bolts.

[0048] In some embodiments, the partition plate 200 is movable relative to the support 100 in both horizontal and vertical directions. This configuration allows the partition plate 200 to synchronize with the rising, falling, forward, and backward movements of the squeegee 400, ensuring that the partition plate 200 follows the squeegee 400. Furthermore, in situations where the operating space is narrow or restricted, the horizontal and vertical movement of the partition plate 200 relative to the support 100 can prevent interference between the partition plate 200 and other components of the product or printing apparatus.

[0049] refer to Figures 1 to 2 In some embodiments, the isolation plate 200 is provided with a connecting assembly 230, which includes a first mounting block 231 and a second mounting block 232. The first mounting block 231 is disposed on the bracket 100 and is movable relative to the bracket 100 in the horizontal direction. For example, the first mounting block 231 is mounted on the horizontal slide rail 120 of the bracket 100 and is movable along the horizontal guide rail. The second mounting block 232 is fixedly connected to the isolation plate 200, disposed on the first mounting block 231, and is movable relative to the first mounting block 231 in the vertical direction. For example, the second mounting block 232 is mounted on the vertical slide rail of the first mounting block 231 and is movable along the vertical guide rail. During use, when the first mounting block 231 moves horizontally relative to the bracket 100, the isolation plate 200 can move horizontally to synchronize with the rising and falling motion of the scraper 400. When the second mounting block 232 moves vertically relative to the first mounting block 231, the isolation plate 200 can move vertically to synchronize with the forward and backward motion of the scraper 400.

[0050] refer to Figures 1 to 2 In some embodiments, connecting components 230 are respectively provided at both lateral ends of the isolation plate 200. That is, there can be two connecting components 230, which are respectively provided at both lateral ends of the isolation plate 200, so that both lateral ends of the isolation plate 200 are respectively connected to the two mounting plates of the bracket 100. This arrangement ensures that both lateral ends of the isolation plate 200 are connected and cooperate with the bracket 100, which not only ensures the reliability of the connection between the isolation plate 200 and the bracket 100, but also ensures the stability of the movement of the isolation plate 200.

[0051] refer to Figures 1 to 2In some embodiments, a first mounting portion 210 and a second mounting portion 220 are respectively provided at the two lateral ends of the isolation plate 200. The first mounting portion 210 and the second mounting portion 220 have different heights, and a connecting component 230 is provided at their respective top ends. For example, the first mounting portion 210 is a baffle formed by bending the isolation plate 200 upward, with the top end of the baffle slightly higher than the upper surface of the isolation plate 200. The second mounting portion 220 is a connecting rod formed by bending the isolation plate 200 upward, with the connecting rod bending once or multiple times, and the top end of the connecting rod being much higher than the top end of the baffle. Specifically, when the two lateral ends of the isolation plate 200 are respectively connected to the bracket 100, the heights of the two connection points between the isolation plate 200 and the bracket 100 can be different. This arrangement allows for a more flexible structural design of the bracket 100, especially in compact spaces, enabling a more rational arrangement of the various components of the bracket 100, avoiding interference and improving space utilization.

[0052] In some embodiments, the first mounting block 231 moves horizontally relative to the bracket 100 under the action of the drive mechanism 300. The second mounting block 232 slides in conjunction with a guide hole 130 provided in the bracket 100, the guide hole 130 being configured to guide the second mounting block 232 to move vertically relative to the first mounting block 231 when the first mounting block 231 moves horizontally relative to the bracket 100.

[0053] refer to Figure 1 and Figure 3 The drive mechanism 300 includes two power push rods, such as pneumatic push rods, electric push rods, or hydraulic push rods. The two power push rods are connected to the corresponding first mounting block 231 through their respective telescopic ends. When the telescopic ends of the power push rods extend or retract, they can drive the corresponding first mounting block 231 to move horizontally relative to the bracket 100, thereby driving the isolation plate 200 to move horizontally relative to the bracket 100.

[0054] refer to Figure 1 and Figure 3 The second mounting block 232 is provided with a connecting shaft 232a, which passes through the guide hole 130 and slides in engagement with it. The guide hole 130 includes a first inclined segment 131, a horizontal segment 132, and a second inclined segment 133 connected in sequence. Both the first inclined segment 131 and the second inclined segment 133 gradually incline upwards in a direction away from the horizontal segment 132. During the horizontal movement of the first mounting block 231 relative to the bracket 100, when the second mounting block 232 slides in engagement with the horizontal segment 132, the second mounting block 232 is fixed relative to the first mounting block 231. When the second mounting block 232 slides in engagement with the first inclined segment 131 / second inclined segment 133, the second mounting block 232 moves relative to the first mounting block 231 in the vertical direction.

[0055] Specifically, through the cooperation between the second mounting block 232 and the bracket 100, the drive mechanism 300 only drives the first mounting block 231 to move horizontally relative to the bracket 100, which can realize the movement of the isolation plate 200 relative to the bracket 100 in both the horizontal and vertical directions. This simplifies the drive mechanism 300, helps reduce the structural size of the protective device, and enables the protective device to meet the requirements of miniaturization.

[0056] In some embodiments, the protective device further includes a controller (not shown). The controller is electrically connected to the drive mechanism 300 and controls the drive mechanism 300 to drive the isolation plate 200 so that the isolation plate 200 follows the doctor blade 400. For example, the controller can be electrically connected to a doctor blade 400 position monitor of the printing apparatus. As the position of the doctor blade 400 changes, the controller can control the drive mechanism 300 according to the monitoring signal from the doctor blade 400 position monitor, so that the drive mechanism 300 drives the isolation plate 200 to follow the isolation plate 200. Specifically, the controller can control the drive mechanism 300 according to a preset tracking program to drive the isolation plate 200 to follow the isolation plate 200. This configuration enables intelligent control of the isolation plate 200's position, ensuring the reliability of the protective device.

[0057] In some embodiments, the protective device further includes a positioner (not shown in the figure). The positioner can be a visual camera, lidar, magnetic sensor, or acoustic sensor, etc. The positioner is mounted on the bracket 100 and electrically connected to the controller. The positioner is used to locate the position of the isolation plate 200, so that the controller controls the drive mechanism 300 to drive or stop the isolation plate 200 according to the position, thereby keeping the isolation plate 200 below the scraper 400. Specifically, the positioner can monitor the position of the isolation plate 200 in real time. When the positioner feeds back the position information of the isolation plate 200 to the controller, the controller can control the drive mechanism 300 according to the position of the isolation plate 200 and the position of the scraper 400. This configuration facilitates improved control accuracy of the isolation plate 200's position and ensures the isolation effect of the isolation plate 200.

[0058] The protective device of this application embodiment has a partition plate 200 that moves below the squeegee 400. This partition plate 200 prevents solder paste from falling onto the product surface, thus avoiding product scrap due to solder paste contamination, reducing production costs, and ensuring customer satisfaction. Furthermore, compared to using a fixed partition, the partition plate 200 moves with the squeegee 400, which helps reduce the size of the partition plate 200 and prevents interference between the partition plate 200 and the squeegee 400 or other equipment, thus avoiding affecting the operation of the squeegee 400.

[0059] One or more embodiments in this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this specification should be included within the protection scope of this application.

[0060] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A shield for preventing the dropping of solder paste on a squeegee to a product surface, characterized by, The protective device comprises: a support; a separation plate movably arranged on the support and below the scraper; a driving mechanism arranged on the support and connected to the separation plate, the driving mechanism being configured to drive the separation plate to move relative to the support when the scraper moves, so that the separation plate follows the scraper.

2. The guard of claim 1, wherein The separation plate is movable relative to the support in a horizontal direction and a height direction.

3. The guard of claim 2, wherein, The separation plate is provided with a connecting assembly, which comprises a first mounting block and a second mounting block, the first mounting block being arranged on the support and movable relative to the support in a horizontal direction, and the second mounting block being fixedly connected to the separation plate and arranged on the first mounting block and movable relative to the first mounting block in a height direction.

4. The guard of claim 3, wherein, The connecting assembly is arranged at each of the lateral ends of the separation plate.

5. The guard of claim 4, wherein, The separation plate is provided with a first mounting portion and a second mounting portion at each of the lateral ends, the first mounting portion and the second mounting portion being different in height, and the first mounting portion and the second mounting portion being respectively provided with the connecting assembly at the top end of each.

6. The guard of claim 3, wherein The first mounting block is movable relative to the support in a horizontal direction under the action of the driving mechanism. The second mounting block is in sliding fit with a guide hole arranged on the support, and the guide hole is configured to guide the second mounting block to move relative to the first mounting block in a height direction when the first mounting block moves relative to the support in a horizontal direction.

7. The guard of claim 6, wherein The guide hole comprises a first inclined section, a horizontal section and a second inclined section connected in sequence, and the second mounting block is fixed relative to the first mounting block when the second mounting block is in sliding fit with the horizontal section, and the second mounting block is movable relative to the first mounting block in a height direction when the second mounting block is in sliding fit with the first inclined section / the second inclined section.

8. The guard of claim 6, wherein, The driving mechanism is one of a pneumatic push rod, an electric push rod and a hydraulic push rod.

9. The guard of claim 1, wherein, The protective device further comprises: a controller in electrical signal connection with the driving mechanism, the controller being configured to control the driving mechanism to drive the separation plate to follow the scraper.

10. The guard of claim 9, wherein, The protective device further comprises: a positioner arranged on the support and in electrical signal connection with the controller, the positioner being configured to position the separation plate, so that the controller controls the driving mechanism to drive or stop driving the separation plate according to the position.

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