Detachable air inflation support shaft for PCB cleaning

Abstract

The utility model relates to the technical field of gas expansion axle, disclose a kind of detachable gas expansion support axle for PCB cleaning, including mounting plate, the inner wall of mounting plate is equipped with support end, the rear end of support end is fixedly connected with external end, the rear side of external end is fixedly connected with mounting end, the outer wall of mounting end is fixedly connected with conical plug-in axle, the outer wall of conical plug-in axle is connected with fixed connecting sleeve by sliding component, the side of conical plug-in axle is connected with gas expansion axle by limiting component, the front end of mounting end is provided with gas hole. In the utility model, by the sliding cooperation of sliding block and sliding slot, the clamping of arc-shaped connecting plate and arc-shaped clamping groove and other structures, damaged components of gas expansion axle can be quickly detached and replaced without heat treatment, reducing maintenance cost. At the same time, multiple limiting structures ensure firm connection, and remain stable even under high-speed rotation, repeated expansion and contraction conditions, ensuring the efficiency and precision of PCB cleaning operation.

Description

Technical Field

[0001] This utility model relates to the field of air expansion shaft technology, and in particular to a replaceable air expansion support shaft for cleaning PCB boards. Background Technology

[0002] In PCB manufacturing, cleaning is a key step in ensuring product quality. As a core support component, the air expansion support shaft needs to be adapted to high-speed rotation and repeated expansion and contraction conditions to meet the requirements of efficient operation and precision control.

[0003] Existing air-expansion support shafts for PCB board cleaning mostly adopt integrated or fixed connection structures. Replacing damaged parts requires heat treatment, which is a complex process that relies on specialized tools and results in high maintenance costs. Furthermore, their limiting structure design is insufficient, making them prone to loosening and rotational misalignment under high-speed rotation and repeated expansion and contraction conditions. This leads to uneven stress on the PCB board, affecting the accuracy and consistency of cleaning operations and making it difficult to meet the demands of efficient and stable production. To address this technical problem, this application proposes a replaceable air-expansion support shaft for PCB board cleaning. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a replaceable air-expansion support shaft for PCB board cleaning. Through the sliding engagement of a slider and a groove, and the snap-fit ​​connection of an arc-shaped connecting plate and an arc-shaped slot, damaged components of the air-expansion shaft can be quickly replaced without heat treatment, reducing maintenance costs. Simultaneously, multiple limiting structures ensure a secure connection, maintaining stability even under high-speed rotation and repeated expansion and contraction conditions, guaranteeing the efficiency and precision of PCB board cleaning operations.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A replaceable air-expansion support shaft for cleaning PCB boards includes a mounting plate. A support end is mounted on the inner wall of the mounting plate. An external end is fixedly connected to the rear end of the support end. An mounting end is fixedly connected to the rear side of the external end. A tapered insertion shaft is fixedly connected to the outer wall of the mounting end. A fixed connecting sleeve is connected to the outer wall of the tapered insertion shaft through a sliding component. An air-expansion shaft is connected to the side of the tapered insertion shaft through a limiting component. An air outlet is provided at the front end of the mounting end.

[0007] Furthermore, the sliding assembly includes a groove formed on the outer wall of the tapered insertion shaft, and a slider is fixedly connected to the inner wall of the fixed connecting sleeve, the slider being slidably connected inside the groove.

[0008] Furthermore, the limiting component includes an arc-shaped connecting plate fixedly connected to the side of the slide groove, the front end of the air shaft is provided with a connecting groove, the side of the connecting groove is provided with an arc-shaped slot, and the arc-shaped connecting plate is disposed inside the arc-shaped slot.

[0009] Furthermore, the tapered insertion shaft is disposed on the inner wall of the connecting groove, and the inner wall of the front end of the air expansion shaft is disposed on the outer wall of the mounting end.

[0010] Furthermore, the rear end of the tapered plug shaft is fixedly connected to the front side of the external end, and the front end of the air expansion shaft abuts against the front side of the external end.

[0011] Furthermore, threaded holes are provided on the outer wall of the external end and the middle end of the mounting end, a connecting hole is provided at the rear end of the air expansion shaft, and fixing holes are provided at both the front and rear ends of the fixed connecting sleeve.

[0012] Furthermore, the rear fixing hole is connected to the rear connecting screw hole by a bolt, and the front fixing hole is connected to the front connecting screw hole by a bolt, with the front bolt penetrating the interior of the connecting hole.

[0013] Furthermore, the inner wall of the fixed connecting sleeve is located at the connection between the air shaft and the external end, for connecting the external end and the air shaft.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model eliminates the complex process of traditional replacement requiring prior heat treatment through the sliding fit between the slider and the groove, and the snap-fit ​​structure between the arc-shaped connecting plate and the arc-shaped slot. Only the bolts of the fixing connecting sleeve need to be removed to quickly separate the air shaft from the mounting end and external end, allowing direct replacement of damaged components. This reduces reliance on specialized tools and maintenance labor costs, meeting the efficient operation and maintenance needs of PCB board cleaning operations.

[0016] 2. In this utility model, the tapered insertion shaft and the connecting groove are precisely positioned, and the arc-shaped connecting plate and the arc-shaped slot form a circumferential limit to prevent the air shaft from rotating and shifting. The fixed connecting sleeve is fastened to the external end and the air shaft with bolts to form an axial lock. The multiple limiting structure ensures a reliable connection between the shaft head and the air shaft, maintaining stability even under high-speed rotation and repeated expansion and contraction. The air shaft bears uniform force when supporting the PCB board, ensuring the accuracy and consistency of the cleaning operation. Attached Figure Description

[0017] Figure 1 This is a perspective view of a detachable air-expansion support shaft for cleaning PCB boards proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the mounting end structure of a detachable air expansion support shaft for cleaning PCB boards proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the external end structure of a detachable air expansion support shaft for cleaning PCB boards proposed in this utility model.

[0020] Figure 4 This utility model provides a schematic diagram of a tapered plug-in shaft structure for a detachable air expansion support shaft for cleaning PCB boards.

[0021] Figure 5 This invention presents a schematic diagram of an arc-shaped slot structure for a detachable air expansion support shaft for cleaning PCB boards.

[0022] Legend:

[0023] 1. Mounting plate; 2. Support end; 3. Air shaft; 4. Fixed connecting sleeve; 5. Connecting screw hole; 6. Slide groove; 7. Slider; 8. Tapered plug shaft; 9. Mounting end; 10. Arc-shaped connecting plate; 11. External end; 12. Connecting groove; 13. Arc-shaped slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1-3 An embodiment of this utility model provides: a replaceable air expansion support shaft for cleaning PCB boards, including a mounting plate 1, a support end 2 installed on the inner wall of the mounting plate 1, an external end 11 fixedly connected to the rear end of the support end 2, a mounting end 9 fixedly connected to the rear side of the external end 11, a tapered insertion shaft 8 fixedly connected to the outer wall of the mounting end 9, a sliding groove 6 opened on the outer wall of the tapered insertion shaft 8, a slider 7 fixedly connected to the inner wall of the fixed connecting sleeve 4, the slider 7 slidably connected inside the sliding groove 6, an arc-shaped connecting plate 10 fixedly connected to the side of the sliding groove 6, a connecting groove 12 opened at the front end of the air expansion shaft 3, an arc-shaped slot 13 opened on the side of the connecting groove 12, the arc-shaped connecting plate 10 is disposed inside the arc-shaped slot 13, and an air outlet is provided at the front end of the mounting end 9;

[0026] Specifically, the mounting plate 1, serving as the overall support base, is the inner wall mounting plate 1 of the PCB board cleaning equipment. Its inner wall fixed support end 2 provides stable support for the shaft head assembly. The outer end 11 at the rear of the support end 2 connects and transitions with the mounting end 9. The tapered insertion shaft 8 on the outer wall of the mounting end 9 slides with the slider 7 on the inner wall of the fixed connecting sleeve 4 via a sliding groove 6, providing guidance for the axial movement of the fixed connecting sleeve 4. The connecting groove 12 at the front end of the air shaft 3 matches the tapered insertion shaft 8, and the arc-shaped slot 13 on the side forms a circumferential limiting structure with the arc-shaped connecting plate 10. The air outlet at the front end of the mounting end 9 ensures normal airflow delivery. The connecting screw hole 5 of the outer end 11, the connecting hole of the air shaft 3, and the fixing hole of the fixed connecting sleeve 4 cooperate with each other, achieving detachable fixing of the three via bolts. The overall structure ensures the connection strength of the air shaft during PCB board cleaning and provides a structural basis for subsequent replacement.

[0027] Reference Figures 3-5 The tapered plug shaft 8 is set on the inner wall of the connecting groove 12, the inner wall of the front end of the air expansion shaft 3 is set on the outer wall of the mounting end 9, the rear end of the tapered plug shaft 8 is fixedly connected to the front side of the external end 11, the front end of the air expansion shaft 3 abuts against the front side of the external end 11, the outer wall of the external end 11 and the middle end of the mounting end 9 are both provided with threaded holes, the rear end of the air expansion shaft 3 is provided with a connecting hole, the front and rear ends of the fixed connecting sleeve 4 are both provided with fixed holes, the rear fixed hole is connected to the rear connecting screw hole 5 by bolts, the front fixed hole is connected to the front connecting screw hole 5 by bolts, the front bolt passes through the interior of the connecting hole, the middle inner wall of the fixed connecting sleeve 4 is set at the connection between the air expansion shaft 3 and the external end 11, so as to connect the external end 11 and the air expansion shaft 3;

[0028] Specifically, in actual disassembly and assembly operations, during disassembly, first loosen the bolts at both ends of the fixed connecting sleeve 4. After the bolts come out of the connecting screw hole 5 and the connecting hole of the air expansion shaft 3, use the sliding characteristics of the slider 7 in the sliding groove 6 to push the fixed connecting sleeve 4 axially, causing it to disengage from the connection between the air expansion shaft 3 and the external end 11. Then, apply axial tension, and the air expansion shaft 3 drives the connecting groove 12 to separate from the tapered plug shaft 8. Simultaneously, the arc-shaped connecting plate 10 disengages from the arc-shaped slot 13, thus completing the disassembly of the shaft head assembly composed of the air expansion shaft 3, the mounting end 9, and the external end 11. This facilitates the subsequent replacement of related internal components of the air expansion shaft 3, such as the airbag. During installation, first align the connecting groove 12 of the air expansion shaft 3 with the tapered plug shaft 8 and insert it, so that the arc-shaped connecting plate 10 is engaged in the arc-shaped slot 13 to achieve circumferential positioning, ensuring that the inner wall of the front end of the air expansion shaft 3 is tightly fitted with the outer wall of the mounting end 9, and that the air outlet is connected to the internal air passage of the air expansion shaft 3. Slide the fixed connecting sleeve 4 to the connection point between the air shaft 3 and the external end 11, so that the two fixing holes of the fixed connecting sleeve 4 are aligned with the connecting screw hole 5 of the external end 11 and the connecting hole of the air shaft 3, respectively. Tighten the bolts in sequence to complete the overall assembly and ensure the stable operation of the support shaft in the subsequent PCB board cleaning operation.

[0029] Working principle: After removing the bolts in the fixing hole, the fixing sleeve 4 is moved away from the connection between the air shaft 3 and the external end 11 by sliding between the slider 7 and the groove 6. Then, the air shaft 3 is detached from the outer wall of the mounting end 9, so that the internal components of the air shaft 3 can be replaced. When installing it, after the tapered plug shaft 8 is aligned with the connecting groove 12 and inserted, the arc-shaped connecting plate 10 on the side of the tapered plug shaft 8 will be inserted into the arc-shaped slot 13. At this time, the air shaft 3 and the mounting end 9 are connected. Then, the fixing sleeve 4 is moved and placed on the connection between the air shaft 3 and the external end 11. When the two fixing holes on the outer wall of the fixing sleeve 4 are aligned with the connecting screw hole 5 on the outer wall of the external end 11 and the connecting hole on the outer wall of the air shaft 3, respectively, they are connected by bolts to achieve the disassembly of the air shaft 3 and the shaft head.

[0030] It is worth noting that the circuitry, protection, and sealing of the air-supported shaft involved in the above embodiments are all based on the corresponding existing technologies according to the actual situation, and therefore will not be described in detail in the embodiments of this application.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A replaceable air-expansion support shaft for cleaning PCB boards, characterized in that, The device includes a mounting plate (1), a support end (2) is mounted on the inner wall of the mounting plate (1), an external end (11) is fixedly connected to the rear end of the support end (2), an installation end (9) is fixedly connected to the rear side of the external end (11), a tapered insertion shaft (8) is fixedly connected to the outer wall of the installation end (9), a fixed connecting sleeve (4) is connected to the outer wall of the tapered insertion shaft (8) through a sliding component, an air expansion shaft (3) is connected to the side of the tapered insertion shaft (8) through a limiting component, and an air outlet is provided at the front end of the installation end (9).

2. The replaceable air-support shaft for PCB board cleaning according to claim 1, characterized in that: The sliding assembly includes a groove (6) formed on the outer wall of the tapered plug shaft (8), and a slider (7) is fixedly connected to the inner wall of the fixed connecting sleeve (4), and the slider (7) is slidably connected inside the groove (6).

3. The replaceable air-support shaft for PCB board cleaning according to claim 1, characterized in that: The limiting component includes an arc-shaped connecting plate (10) fixedly connected to the side of the slide groove (6), a connecting groove (12) is provided at the front end of the air shaft (3), an arc-shaped slot (13) is provided on the side of the connecting groove (12), and the arc-shaped connecting plate (10) is disposed inside the arc-shaped slot (13).

4. The replaceable air-support shaft for PCB board cleaning according to claim 1, characterized in that: The tapered plug shaft (8) is disposed on the inner wall of the connecting groove (12), and the inner wall of the front end of the air expansion shaft (3) is disposed on the outer wall of the mounting end (9).

5. A replaceable air-support shaft for cleaning PCB boards according to claim 1, characterized in that: The rear end of the tapered plug shaft (8) is fixedly connected to the front side of the external end (11), and the front end of the air expansion shaft (3) abuts against the front side of the external end (11).

6. The replaceable air-support shaft for PCB board cleaning according to claim 1, characterized in that: The outer wall of the external end (11) and the middle end of the mounting end (9) are provided with threaded holes, the rear end of the air shaft (3) is provided with a connecting hole, and the front and rear ends of the fixed connecting sleeve (4) are provided with fixing holes.

7. A replaceable air-support shaft for cleaning PCB boards according to claim 6, characterized in that: The rear fixing hole is connected to the rear connecting screw hole (5) by a bolt, and the front fixing hole is connected to the front connecting screw hole (5) by a bolt, with the front bolt penetrating the interior of the connecting hole.

8. A replaceable air-support shaft for cleaning PCB boards according to claim 1, characterized in that: The inner wall of the fixed connecting sleeve (4) is located at the connection between the air shaft (3) and the external end (11) for connecting the external end (11) and the air shaft (3).

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