A multi-mode optical module welding fixture

Abstract

The utility model discloses a kind of multi-mode optical module welding jigs, including base;Circuit board positioning block, the circuit board positioning hole is fixedly installed on base, circuit board positioning slot matched with circuit board is opened on the upper surface of the circuit board positioning block;Lower pressing mechanism, the lower pressing mechanism includes power device, slide and pressing plate, the pressing plate is arranged on circuit board positioning block above parallel to circuit board positioning block, the pressing plate is installed on slide, linear motion is driven by power device slide horizontally, when pressing plate moves to the upper side of circuit board positioning block along the direction of approaching circuit board positioning block with slide, pressing plate vertically moves downward.The utility model realizes the prepositioning of circuit board in horizontal direction, can limit the displacement of circuit board along horizontal direction, reduce the risk of circuit board sliding in welding process;Power device drives slide and pressing plate to automatically complete horizontal motion and pressing action, without manual intervention fixation process, reduce the labor intensity of operator.

Description

Technical Field

[0001] This utility model relates to the field of optical module manufacturing technology, and in particular to a multimode optical module welding fixture. Background Technology

[0002] In the soldering production of multimode optical module circuit boards, proper board fixation is a crucial prerequisite for ensuring soldering quality. If the circuit board shifts, warps, or experiences uneven stress during fixation, it can easily lead to poor soldering, incorrect soldering, or even damage to the circuit board substrate, directly affecting the communication performance and lifespan of the optical module. The traditional method for fixing circuit boards in the industry is primarily manual clamping. This method relies on operators manually placing the circuit board on the workbench and securing it using bolts, clips, or elastic pressure plates. This method has low positioning accuracy, high labor intensity, and low efficiency. To improve automation, some companies use pneumatic clamps, which use cylinders to directly drive pressure blocks to vertically press the circuit board. However, this technology still has drawbacks: the clamp can only output pressure vertically and cannot pre-position or limit the circuit board horizontally; during pressing or soldering, the circuit board may slide horizontally, affecting the soldering accuracy of components. Utility Model Content

[0003] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a multimode optical module welding fixture, comprising: Base; A circuit board positioning block, wherein the circuit board positioning hole is fixedly installed on the base, and a circuit board positioning groove matching the circuit board is formed on the upper surface of the circuit board positioning block; The pressing mechanism includes a power unit, a slide, and a pressure plate. The pressure plate is positioned above the circuit board positioning block, parallel to the circuit board positioning block. The pressure plate is mounted on the slide and the power unit drives the slide to move horizontally linearly. When the pressure plate moves with the slide along the direction close to the circuit board positioning block to the side above the circuit board positioning block, the pressure plate moves vertically downward.

[0004] This invention achieves pre-positioning of the circuit board in the horizontal direction by opening a circuit board positioning groove on the circuit board positioning block that matches the circuit board. This restricts the horizontal displacement of the circuit board and reduces the risk of the circuit board sliding during the welding process. The slide and pressure plate are automatically driven by a power device to complete the horizontal movement and pressing action without the need for manual intervention in the fixing process, thus reducing the labor intensity of the operators.

[0005] Furthermore, arc-shaped guide grooves are provided on both sides of the pressure plate, and guide wheel assemblies that cooperate with the guide grooves are installed on both sides of the slide corresponding to the guide grooves. The guide wheel assemblies can move along the guide grooves. The pressing mechanism also includes a slider that is slidably fitted on the slide. The slider can move linearly relative to the slide along a direction of movement parallel to the slide. The pressure plate is vertically slidably fitted with the slider. A first elastic element is provided between the pressure plate and the slider, and a second elastic element is provided between the slider and the slide. A first stop block is provided on the upper surface of the base near the circuit board positioning block, and the first stop block corresponds to the slider.

[0006] As the slider moves towards the circuit board positioning block along the carriage, it stops moving horizontally after reaching the first stop. At this point, the pressure plate is positioned directly above the circuit board positioning groove. Because the pressure plate and slider are vertically connected, the continued movement of the carriage causes the guide wheel assembly to move along the guide groove, which in turn drives the pressure plate downward. As the guide wheel moves along the arc section of the guide groove, the downward speed of the pressure plate gradually decreases, reducing the impact force when the pressure plate contacts the circuit board. After the carriage pushes the slider to the first stop, the carriage continues to move and compresses the second elastic element. As the pressure plate presses down, it compresses the first elastic element. After welding is completed, when the power unit drives the carriage to retract, the pressure plate automatically resets upward under the elastic force of the first elastic element, and the slider resets synchronously with the carriage under the elastic force of the second elastic element. No manual adjustment of the pressure plate and slider positions is required.

[0007] Furthermore, a second stop block is provided at the position of the positioning hole of the circuit board on the upper surface of the base, and the second stop block is set corresponding to the slide.

[0008] After welding is completed, when the power unit drives the slide to retract, the second stop block can prevent the slide from exceeding the preset initial position, thus improving the problem of the slide continuously retracting due to the inertia of the power unit or the deviation of the control system and colliding with the power unit mounting seat, cable connector and other components on the base.

[0009] Furthermore, the carriage slides in a sliding engagement with the base via a guide structure.

[0010] The guide structure enables the carriage to move along a preset horizontal direction parallel to the positioning groove of the circuit board, reducing the movement deviation of the carriage and improving the movement accuracy of the carriage.

[0011] Furthermore, the lower surface of the pressure plate is also provided with a flexible elastic part.

[0012] The flexible elastic part can absorb the downward pressure impact through its own deformation, reduce the instantaneous impact on the circuit board, and reduce the damage to components caused by rigid pressure plates.

[0013] Furthermore, probes are provided in the positioning groove of the circuit board corresponding to the contacts of the circuit board.

[0014] The probe can contact the contacts after the circuit board is placed in the positioning slot, and verify the contact continuity status through external testing equipment, thus screening out circuit boards with poor contacts in advance and reducing invalid soldering.

[0015] This utility model has the following advantages: This invention achieves pre-positioning of the circuit board in the horizontal direction by opening a circuit board positioning groove on the circuit board positioning block that matches the circuit board. This restricts the horizontal displacement of the circuit board and reduces the risk of the circuit board sliding during the welding process. The slide and pressure plate are automatically driven by a power device to complete the horizontal movement and pressing action without the need for manual intervention in the fixing process, thus reducing the labor intensity of the operators. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the fixture's structure; Figure 2 yes Figure 1 A schematic diagram of the circuit board positioning block in the fixture shown; Figure 3 yes Figure 1 A schematic diagram of the base structure in the fixture shown; Figure 4 yes Figure 1 A schematic diagram of the pressing mechanism in the fixture shown; Figure 5 yes Figure 4 A side view of the pressing mechanism shown; Figure 6 yes Figure 4 A cross-sectional schematic diagram of the pressing mechanism shown; Figure 7 This is a schematic diagram of the first structure of the circuit board; Figure 8 yes Figure 7 The diagram shows the second structure of the circuit board. In the picture: 100. Base; 110. First stop block; 120. Second stop block; 130. Guide structure; 200. Circuit board positioning block; 210. Circuit board positioning slot; 220. Probe; 300, pressing mechanism; 310, power unit; 320, carriage; 321, guide wheel assembly; 330, pressure plate; 331, guide groove; 332, flexible elastic part; 340, first elastic element; 350, second elastic element; 400, Circuit board; 410, Contact; 420, Area to be soldered; 430, Pressing area. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown 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 intended to explain this application, and should not be construed as limiting this application.

[0018] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0019] As described in the background section, this fixture can only output pressure in the vertical direction and cannot pre-position or limit the circuit board in the horizontal direction; during the clamping or welding process, the circuit board may slide in the horizontal direction, affecting the welding accuracy of the components.

[0020] Example 1: Therefore, in order to solve the above-mentioned technical problems existing in the prior art, this embodiment provides a multimode optical module welding fixture, such as... Figure 1 As shown, the fixture includes: Base 100; Circuit board positioning block 200, the circuit board positioning hole is fixedly installed on the base, such as Figure 2 As shown, a circuit board positioning groove 210 matching the circuit board 400 is provided on the upper surface of the circuit board positioning block; Downward pressing mechanism 300, such as Figure 4 As shown, the pressing mechanism includes a power unit 320, a slide 320, and a pressure plate 330. The pressure plate is arranged parallel to the circuit board positioning block and above the circuit board positioning block. The pressure plate is mounted on the slide and the power unit drives the slide to move horizontally linearly. When the pressure plate moves with the slide along the direction close to the circuit board positioning block to the side above the circuit board positioning block, the pressure plate moves vertically downward.

[0021] This embodiment achieves pre-positioning of the circuit board in the horizontal direction by opening a circuit board positioning groove on the circuit board positioning block that matches the circuit board. This restricts the horizontal displacement of the circuit board and reduces the risk of the circuit board sliding during the soldering process. The slide and pressure plate are automatically driven by a power device to complete the horizontal movement and clamping action without the need for manual intervention in the fixing process, thus reducing the labor intensity of the operators.

[0022] For example, such as Figure 5 , 6 As shown, arc-shaped guide grooves 331 are provided on both sides of the pressure plate, and guide wheel assemblies 321 that cooperate with the guide grooves are installed on both sides of the slide corresponding to the guide grooves. The guide wheel assemblies can move along the guide grooves. The pressing mechanism also includes a slider 360, which is slidably fitted on the slide. The slider can move linearly relative to the slide along a direction of movement parallel to the slide. The pressure plate is vertically slidably fitted with the slider. A first elastic element 340 is provided between the pressure plate and the slider, and a second elastic element 350 is provided between the slider and the slide. A first stop block 110 is provided on the upper surface of the base near the circuit board positioning block, and the first stop block is provided corresponding to the slider.

[0023] Specifically, in use, this embodiment requires the operator or automated feeding equipment to perform the following actions: Figure 7 , 8The multimode optical module circuit board to be soldered is placed in the circuit board positioning slot (210) of the circuit board positioning block; the power device (such as the cylinder is vented) is started, and the power device outputs horizontal driving force to drive the slide to make horizontal linear movement; the slide moves the slider and pressure plate on it together towards the circuit board positioning block at the same time: at this time, the slider and the slide have no relative sliding, and the pressure plate moves smoothly towards the circuit board positioning slot with the slide until the slider moves to the position of the first stop block. When the slider moves to the first stop block with the slide, the first stop block forms a mechanical block on the slider, and the slider stops moving horizontally; the power device continues to drive the slide towards the circuit board positioning block. Since the slider is limited, the slide begins to slide horizontally relative to the slider, while compressing the second elastic element between the slider and the slide; when the slide slides relative to the slider, the guide wheel assembly on both sides of the slide moves along the arc-shaped guide groove of the pressure plate. The arc-shaped structure of the guide groove converts the horizontal movement of the slide into the vertical downward movement of the pressure plate, compressing the first elastic element until it contacts the circuit board pressing area 430, and presses and fixes the circuit board. Welding equipment (such as welding torches or automated welding robots) performs welding operations on components (such as optical chips or connector pins) in the welding area 420 on the circuit board. After the welding operation is completed, the power unit reverses its action (such as the cylinder exhausting and retracting), driving the slide to retract horizontally towards its initial position. During the slide's retraction, the compressed second elastic element releases its elastic force, pushing the slider to retract synchronously with the slide, restoring the slider and slide to their initial relative positions. During the slide's retraction, the guide wheel assembly moves in the opposite direction along the arc section of the guide groove, and the pressure plate is vertically lifted under the elastic force of the first elastic element, gradually detaching from the upper surface of the circuit board and returning to its initial lifted state. The slide continues to retract to its initial standby position, and the entire pressing mechanism completes its reset, awaiting the next welding cycle. After the pressure plate is fully lifted, the operator or automated material handling equipment removes the welded circuit board from the circuit board positioning slot, and the fixture officially completes the entire process of a single welding operation, entering the next work cycle.

[0024] like Figure 3 As shown, a second stop block 120 is provided at the position of the positioning hole of the principle circuit board on the upper surface of the base, and the second stop block is set corresponding to the slide.

[0025] After welding is completed, when the power unit drives the slide to retract, the second stop block can prevent the slide from exceeding the preset initial position, thus improving the problem of the slide colliding with the power unit mounting seat, cable connector and other components on the base due to the inertia of the power unit or the deviation of the control system.

[0026] like Figure 3 As shown, the carriage slides with the base via a guide structure 130.

[0027] The guiding structure (such as guide rail-slider pair, guide post-guide hole, etc.) enables the carriage to move in a preset horizontal direction parallel to the positioning groove of the circuit board, reducing the movement deviation of the carriage and improving the movement accuracy of the carriage.

[0028] like Figure 6 As shown, the lower surface of the pressure plate is also provided with a flexible elastic part 332.

[0029] The flexible elastic part can absorb the downward pressure impact through its own deformation, reduce the instantaneous impact on the circuit board, and reduce the damage to components caused by rigid pressure plates.

[0030] like Figure 2 As shown, a probe is provided in the positioning groove of the circuit board corresponding to the contact 410 of the circuit board.

[0031] The probe can contact the contacts after the circuit board is placed in the positioning slot, and verify the continuity of the contacts with external testing equipment (such as a multimeter or continuity tester), thus screening out circuit boards with poor contacts in advance and reducing invalid soldering.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multimode optical module welding fixture, characterized in that, include: Base; A circuit board positioning block is fixedly mounted on a base, and a circuit board positioning groove matching the circuit board is formed on the upper surface of the circuit board positioning block. The pressing mechanism includes a power unit, a slide, and a pressure plate. The pressure plate is positioned above the circuit board positioning block, parallel to the circuit board positioning block. The pressure plate is mounted on the slide and the power unit drives the slide to move horizontally linearly. When the pressure plate moves with the slide along the direction close to the circuit board positioning block to the side above the circuit board positioning block, the pressure plate moves vertically downward.

2. The multimode optical module welding fixture according to claim 1, characterized in that, Arc-shaped guide grooves are provided on both sides of the pressure plate, and guide wheel assemblies that cooperate with the guide grooves are installed on both sides of the slide corresponding to the guide grooves. The guide wheel assemblies can move along the guide grooves. The pressing mechanism also includes a slider that is slidably fitted on the slide. The slider can move linearly relative to the slide along a direction of movement parallel to the slide. The pressure plate is vertically slidably fitted with the slider. A first elastic element is provided between the pressure plate and the slider, and a second elastic element is provided between the slider and the slide. A first stop block is provided on the upper surface of the base near the circuit board positioning block, and the first stop block corresponds to the slider.

3. The multimode optical module welding fixture according to claim 1, characterized in that, A second stop block is provided at the position of the positioning hole of the circuit board on the upper surface of the base, and the second stop block is set corresponding to the slide.

4. A multimode optical module welding fixture according to claim 1, characterized in that, The carriage slides in conjunction with the base via a guide structure.

5. A multimode optical module welding fixture according to claim 1, characterized in that, The lower surface of the pressure plate is also provided with a flexible elastic part.

6. A multimode optical module welding fixture according to claim 1, characterized in that, A probe is provided in the positioning groove of the circuit board corresponding to the contact of the circuit board.

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