Impeller washing machine balance ring vacuum leak detection equipment

Abstract

The utility model discloses a kind of impeller washing machine balance ring vacuumizing leak detection equipment, including rack, table panel, vacuum pump, compacting assembly and plugging assembly. Compacting assembly includes compacting cylinder, cylinder mounting plate, push plate, first guide rod and first linear bearing;First guide rod is vertically arranged and is connected table panel and cylinder mounting plate, push plate is slidably matched with first guide rod by first linear bearing, compacting cylinder drives push plate to lift. Plugging assembly includes plug mounting plate, vacuumizing plug, plug bottom plate, second guide rod and second linear bearing;Second linear bearing is fixed on table panel by plug bottom plate, second guide rod is fixed on plug mounting plate and downwardly penetrates second linear bearing, vacuumizing plug is located on plug mounting plate and is communicated vacuum pump. Push plate is located above plug mounting plate and both are independent components, and push plate is pressed against plug mounting plate when descending. The structure is automatically compensated by separate design alignment error, to ensure sealing reliability and leak detection accuracy.

Description

Technical Field

[0001] This utility model relates to testing equipment in the field of washing machine manufacturing, and more particularly to a vacuum leak detection device for the balance ring of a pulsator washing machine. Background Technology

[0002] The balance ring of a pulsator washing machine needs to be kept sealed and maintain a certain degree of vacuum to ensure its balancing efficiency. During the manufacturing process, minute leaks may occur in the balance ring. Therefore, high-precision vacuum leak testing is essential before it leaves the factory. Currently, most leak detection equipment on the market uses a simple structure: the cylinder push rod that drives the compression and the vacuum plug that performs the sealing are usually rigidly connected as a single unit. While this "one-piece" design is simple, it has a fundamental flaw: it cannot compensate for the minute positional errors in the balance ring's injection port caused by manufacturing tolerances and positioning deviations. When the equipment is working, the rigid plug forces pressure against the injection port; any slight misalignment will translate into lateral stress, causing uneven wear and stress on the sealing ring, leading to micro-leakage and misjudgment of the leak detection results. Simultaneously, this "stressing" phenomenon can also damage the cylinder seals and guide mechanism, affecting the equipment's lifespan. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned problems and provide an automatic adaptation device for alignment error and vacuum leak detection of the balance ring of a pulsator washing machine, so as to ensure sealing reliability and leak detection accuracy.

[0004] The technical solution of this utility model is: The vacuum leak detection device for the balance ring of a pulsator washing machine according to this utility model includes a frame, a table panel, and a vacuum pump. The table panel is provided with a pressing component and a sealing component. Its characteristic is that: The clamping assembly includes a clamping cylinder, a cylinder mounting plate, a push plate, a first guide rod, and a first linear bearing; the first guide rod is vertically arranged with its lower end fixed to the platform and its upper end fixed to the cylinder mounting plate; the first linear bearing is fixed to the push plate and slides with the first guide rod; the cylinder body of the clamping cylinder is fixed to the cylinder mounting plate, and its piston rod is connected to the push plate to drive the push plate to move up and down along the first guide rod; The sealing assembly includes a plug mounting plate, a vacuum plug, a plug base plate, a second guide rod, and a second linear bearing; the plug base plate is fixed to the platform panel; the second linear bearing is fixed to the plug base plate; the second guide rod is vertically arranged, with its upper end fixed to the plug mounting plate and its lower end passing through the second linear bearing and slidingly engaging with it; the vacuum plug is fixed to the plug mounting plate and connected to the vacuum pump; the push plate is located above the plug mounting plate, and the two are independently arranged components; when the pressing cylinder drives the push plate to descend, the push plate presses against the plug mounting plate.

[0005] Furthermore, in the vacuum leak detection device for the balance ring of the pulsator washing machine described in this utility model, the piston rod of the clamping cylinder is connected to the push plate via a floating joint. The introduction of the floating joint further enhances the system's error compensation capability. It can effectively absorb and compensate for any minor coaxiality errors that may exist between the piston rod of the clamping cylinder and the push plate, eliminate additional lateral stress, protect the cylinder seals, make the clamping action smoother and more reliable, and extend the service life of the cylinder.

[0006] Furthermore, in the vacuum leak detection device for the balance ring of the pulsator washing machine described in this utility model, the table panel and the bottom plate of the plug are respectively provided with through holes for the vacuum plug to pass through downwards. This through-hole design can be used to sink and hide the vacuum plug, avoiding exposure and damage when not in operation.

[0007] Furthermore, in the vacuum leak detection device for the balance ring of the pulsator washing machine described in this utility model, the second guide rod is provided with a limiting structure to restrict the upward stroke of the plug mounting plate, which can effectively prevent the plug mounting plate from rising excessively due to improper operation or accidental circumstances, causing the second guide rod to completely disengage from the linear bearing.

[0008] Furthermore, in the vacuum leak detection device for the balance ring of the pulsator washing machine described in this utility model, the limiting structure is a baffle fixed to the lower end of the second guide rod.

[0009] Furthermore, in the vacuum leak detection device for the balance ring of the pulsator washing machine described in this utility model, a safety light curtain is provided on the frame. When the equipment is running, if a person or foreign object enters the countertop area, the light curtain will immediately send a signal to stop the equipment urgently, thereby effectively preventing safety accidents such as crush injuries and providing proactive personal safety protection for operators.

[0010] Furthermore, in the vacuum leak detection device for the balance ring of the pulsator washing machine described in this utility model, an inspection door is hinged to the side of the frame.

[0011] Furthermore, in the vacuum leak detection device for the balance ring of the pulsator washing machine described in this utility model, the number of the first guide rods is at least two, symmetrically arranged on both sides of the clamping cylinder. The use of at least two guide rods in a symmetrical arrangement constitutes a stable guiding system, ensuring that the push plate maintains smooth and precise linear movement even when subjected to asymmetrical loads.

[0012] The beneficial effects of this utility model are: 1. This utility model designs the push plate of the pressing component and the plug mounting plate of the sealing component as two independent components without rigid connection. When the push plate is pressed down, it presses against the plug mounting plate and transmits the pressing force to the vacuum plug. This automatically compensates for the alignment error between the liquid injection port of the balance ring and the plug, avoids rigid impact, ensures the reliability and consistency of the seal, and solves the problem of inaccurate leak detection caused by poor sealing.

[0013] 2. This utility model has through holes on the tabletop and the bottom plate of the plug, so that the vacuum plug can be completely lowered and hidden under the tabletop when not in operation, thereby achieving equipment compactness, actively protecting core components, and improving equipment life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model after the inspection door has been removed.

[0016] Figure 3 This is a schematic diagram of the sealing component described in this utility model. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings: Reference Figure 1 , Figure 2 As shown, the vacuum leak detection device for the balance ring of a pulsator washing machine described in this embodiment includes a frame 1, a platform 2 mounted on the frame 1, and a vacuum pump 7 disposed inside the frame 1. A pressing assembly 3 and a sealing assembly 4 are mounted on the platform 2.

[0018] Specifically, the clamping assembly 3 includes a clamping cylinder 31, a cylinder mounting plate 36, a push plate 32, two first guide rods 33, and two first linear bearings 34. The first guide rods 33 are vertically arranged, with their lower ends fixed to the platform 2 via flanges and their upper ends fixed to the cylinder mounting plate 36. The first linear bearings 34 are fixed to the push plate 32 and slide in cooperation with the first guide rods 33. The cylinder body of the clamping cylinder 31 is fixed to the cylinder mounting plate 36, and its piston rod is connected to the push plate 32 via a floating joint 35, used to drive the push plate 32 to smoothly rise and fall along the first guide rods 33.

[0019] Reference Figure 2 and Figure 3 The sealing assembly 4 includes a plug mounting plate 41, a vacuum plug 42, a plug base plate 43, two second guide rods 44, and two second linear bearings 45. The plug base plate 43 is fixed below the platform 2. The second linear bearings 45 are fixed to the plug base plate 43. The second guide rods 44 are vertically arranged, with their upper ends fixed to the plug mounting plate 41 and their lower ends passing through and slidingly engaging with the second linear bearings 45. The vacuum plug 42 is fixed to the plug mounting plate 41 and is connected to the vacuum pump 7 (the connecting pipeline is not shown in the figure). The push plate 32 is located above the plug mounting plate 41, and the two are independent components. When the pressing cylinder 31 drives the push plate 32 to descend, the push plate 32 presses against the plug mounting plate 41, tightly pressing the vacuum plug 42 into the liquid injection port of the balance ring. The symmetrical layout of the double guide rods ensures smooth and precise movement, providing a basic guarantee for reliable sealing.

[0020] To optimize the structure and protect the vacuum plug 42, through holes are correspondingly provided on the platform 2 and the plug base plate 43. This structure allows the vacuum plug 42 to be completely lowered and hidden under the platform 2 when not in operation. This design not only makes the equipment more compact and neat, but more importantly, it effectively prevents damage to the vacuum plug 42 caused by accidental collisions, scratches, or dust accumulation during non-operational periods, thereby protecting its delicate sealing structure and extending its service life. To prevent the plug mounting plate 41 from rising excessively and causing the second guide rod 44 to dislodge, a baffle as a limiting structure is fixed at the lower end of the second guide rod 44.

[0021] In terms of safety protection, the front side of the frame 1 serves as an operating port and is equipped with a pair of safety light curtains 5 for real-time monitoring of hazardous areas. Warning lights are installed on the top of the frame 1 to display the equipment's operating status (e.g., running, stopped, faulty). Furthermore, maintenance doors 6 are hinged to the left, right, and rear sides of the frame 1 for easy access to the internal equipment.

[0022] During operation, the operator places the balance ring on the platform 2. The plug mounting plate 41 is lifted upwards, aligning the liquid injection port of the balance ring with the lower part of the vacuum plug 42, and then released. The plug mounting plate 41 falls under its own weight, initially positioning the vacuum plug 42 on the liquid injection port. Subsequently, the equipment is started, and the clamping cylinder 31 drives the push plate 32 to descend, pressing against the plug mounting plate 41 to provide final clamping and sealing force. Next, the vacuum pump 7 is started to evacuate the inside of the balance ring and perform pressure testing for leaks. After leak testing is completed, all components are reset, completing one work cycle.

[0023] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model are still covered by the claims of this utility model.

Claims

1. A vacuum leak detection device for the balance ring of a pulsator washing machine, comprising a frame, a tabletop, and a vacuum pump, wherein the tabletop is equipped with a pressing component and a sealing component, characterized in that: The clamping assembly includes a clamping cylinder, a cylinder mounting plate, a push plate, a first guide rod, and a first linear bearing; the first guide rod is vertically arranged with its lower end fixed to the platform and its upper end fixed to the cylinder mounting plate; the first linear bearing is fixed to the push plate and slides with the first guide rod; the cylinder body of the clamping cylinder is fixed to the cylinder mounting plate, and its piston rod is connected to the push plate to drive the push plate to move up and down along the first guide rod; The sealing assembly includes a plug mounting plate, a vacuum plug, a plug base plate, a second guide rod, and a second linear bearing; the plug base plate is fixed to the platform panel; the second linear bearing is fixed to the plug base plate; the second guide rod is vertically arranged, with its upper end fixed to the plug mounting plate and its lower end passing through the second linear bearing and slidingly engaging with it; the vacuum plug is fixed to the plug mounting plate and connected to the vacuum pump; the push plate is located above the plug mounting plate, and the two are independently arranged components; when the pressing cylinder drives the push plate to descend, the push plate presses against the plug mounting plate.

2. The vacuum leak detection device for the balance ring of a pulsator washing machine according to claim 1, characterized in that: The piston rod of the clamping cylinder is connected to the push plate via a floating joint.

3. The vacuum leak detection device for the balance ring of a pulsator washing machine according to claim 1, characterized in that: The tabletop and the bottom plate of the plug are respectively provided with through holes for the vacuum plug to pass through downwards.

4. The vacuum leak detection device for the balance ring of a pulsator washing machine according to claim 1, characterized in that: The second guide rod is provided with a limiting structure to restrict the upward stroke of the plug mounting plate.

5. The vacuum leak detection device for the balance ring of a pulsator washing machine according to claim 4, characterized in that: The limiting structure is a baffle fixed to the lower end of the second guide rod.

6. The vacuum leak detection device for the balance ring of a pulsator washing machine according to claim 1, characterized in that: The frame is equipped with a safety light curtain.

7. The vacuum leak detection device for the balance ring of a pulsator washing machine according to claim 1, characterized in that: The frame has a hinged access door on its side.

8. The vacuum leak detection device for the balance ring of a pulsator washing machine according to claim 1, characterized in that: The number of the first guide rods is at least two, symmetrically arranged on both sides of the clamping cylinder.

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