A floating leak-proof device

Abstract

The utility model relates to a floating leakage-proof device, comprising a first conveying roller group, which is arranged outside a soaking tank and located at the inlet and outlet of the soaking tank, and comprises an upper conveying roller and a lower conveying roller which are arranged up and down and abut against the soaking tank and can move away from or approach and abut against each other to form a conveying gap or close the inlet and outlet respectively, and a tray passes through the inlet into the soaking tank through the conveying gap, wherein the lower conveying roller abuts against the edges of the inlet and outlet; a floating leakage-proof component, which is arranged in the soaking tank and located at the inlet and outlet, and comprises a floating body made of flexible material, the floating body floats in the soaking liquid of the soaking tank and is located below the conveying direction of the tray, and the floating body simultaneously presses against the lower conveying roller and the bottom of the tray through buoyancy; the utility model arranges a floating body in the soaking tank, and the floating body blocks the gap between the hollow or concave part of the lower roller and the tray through buoyancy, thereby effectively reducing the leakage of the soaking liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of wet process of circuit boards, in particular to a floating leakage blocking device. Background Art

[0002] During the manufacturing process of printed circuit boards (PCBs), trays for storing circuit boards often need to be cleaned with chemical liquids. Normally, the trays are horizontally transported through a tank containing chemical liquids for cleaning. The transport device includes a plurality of transport rollers arranged vertically. The tray moves through the gap between the upper and lower transport rollers. An inlet and an outlet are provided at each end of the tank. The tray enters the tank through the inlet of the tank and leaves the tank through the outlet. The inlet and the outlet are sealed with transport rollers arranged vertically. When the tray reaches the inlet, the upper transport roller is lifted and enters the tank. The existing problem is that for trays with a hollow or concave bottom, when the tray reaches the inlet or outlet, there is a gap between the lower roller and the hollow or concave part of the tray, and the liquid in the immersion tank will leak a large amount from the gap, resulting in insufficient liquid level in the immersion tank and insufficient cleaning of the tray. Utility Model Content

[0003] To this end, the technical problem to be solved by the utility model is to overcome the problem in the prior art that the soaking liquid in the soaking tank leaks from the gap between the hollow or recessed part of the lower roller and the tray, resulting in insufficient liquid level in the soaking tank and insufficient cleaning of the tray, and further provide a floating leakage-proof device that can seal the gap between the hollow or recessed part of the lower roller and the tray and reduce the leakage of the soaking liquid.

[0004] In order to solve the above technical problems, the utility model provides a floating leakage-proof device, comprising:

[0005] A first conveying roller group is arranged outside the soaking tank and located at the inlet and outlet of the soaking tank, the first conveying roller group includes an upper conveying roller and a lower conveying roller arranged up and down and abutting against the soaking tank, the upper conveying roller and the lower conveying roller can move away from or approach each other and abut against each other to form a conveying gap or close the inlet and the outlet respectively, and the tray passes through the conveying gap through the inlet and enters the soaking tank, wherein the lower conveying roller abuts against the edges of the inlet and the outlet;

[0006] A floating leak-proof component is arranged in the soaking tank and is located at the inlet and the outlet. The floating leak-proof component includes a floating body made of a flexible material. The floating body floats in the soaking liquid in the soaking tank and is located below the conveying direction of the tray. The floating body extends along the length direction of the lower conveying roller. The floating body presses against the lower conveying roller and the bottom of the tray at the same time through buoyancy.

[0007] In one embodiment of the utility model, the floating leakage-proof assembly further comprises a connecting shaft disposed in the soaking tank, the connecting shaft extends along the axial direction of the lower conveying roller, and the floating body is movably connected to the connecting shaft.

[0008] In one embodiment of the present utility model, the floating body is provided with a through hole, the through hole comprises a circular hole or a bar-shaped hole, and the connecting shaft passes through the circular hole and the bar-shaped hole.

[0009] In one embodiment of the present utility model, the floating body is provided with a plurality of weight-reducing holes, and the weight-reducing holes, the circular holes and the strip holes are coaxial.

[0010] In one embodiment of the present invention, a plurality of the floating bodies are arranged on the connecting shaft, the plurality of the floating bodies are distributed along the length direction of the connecting shaft, and adjacent floating bodies abut against each other.

[0011] In one embodiment of the utility model, the floating body is provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion extend along the length direction of the connecting shaft, and the first protrusion and the second protrusion respectively contact the bottom of the tray and the lower conveying roller of the first conveying roller group.

[0012] In one embodiment of the present invention, the floating body is made of polypropylene material.

[0013] In one embodiment of the utility model, it also includes a plurality of second conveying roller groups arranged inside the immersion tank, the plurality of second conveying roller groups are arranged parallel to the first conveying roller group, the second conveying roller group includes an upper conveying roller and a lower conveying roller arranged parallel to each other, and a gap is provided between the upper conveying roller and the lower conveying roller of the second conveying roller group for conveying the tray.

[0014] In one embodiment of the present invention, the floating body is located between the lower conveying roller of the second conveying roller group and the lower conveying roller of the first conveying roller group.

[0015] In one embodiment of the present invention, the floating leakage-blocking assembly and the first conveying roller group are provided at both ends of the soaking tank.

[0016] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0017] The floating leakage-proof device described in the utility model can press the top and bottom of the pallet when the pallet enters or goes out of the soaking tank, thereby reducing the leakage of soaking liquid from the conveying gap, by arranging an upper conveying roller and a lower conveying roller at the inlet and outlet of the soaking tank; and can reduce the leakage of soaking liquid from the conveying gap by arranging a floating body below the moving direction of the pallet. When the pallet moves above the floating body, under the action of buoyancy, the top of the floating body abuts against the bottom of the pallet, and the side of the floating body abuts against the surface of the lower conveying roller of the first conveying roller group, thereby blocking the hollow at the bottom of the pallet and the gap between the lower conveying roller of the first conveying roller group, thereby further reducing the leakage of the soaking tank, thereby ensuring the liquid level of the soaking tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0019] Figure 1 It is a structural schematic diagram of the floating leakage-proof device in the preferred embodiment of the utility model.

[0020] Figure 2 for Figure 1 A structural schematic diagram of a side view of a tray, a floating body and a lower conveying roller of a floating leakage-proof device is shown.

[0021] Figure 3 for Figure 1 A schematic structural diagram of a top view of a floating leakage-proofing assembly and a lower conveying roller of a floating leakage-proofing device is shown.

[0022] Figure 4 for Figure 1 A schematic structural diagram of the floating body of the floating leakage-proof device shown.

[0023] Explanation of the reference numerals in the drawings in the specification: 1. first conveying roller group; 11. lower conveying roller; 12. upper conveying roller; 2. floating body; 21. second protrusion; 22. first protrusion; 23. first weight-reducing hole; 24. through hole; 25. second weight-reducing hole; 3. connecting shaft; 4. soaking tank; 41. soaking liquid; 42. outlet; 43. soaking tank body; 5. tray; 6. fixing seat; 7. second conveying roller group; 71. gap; 8. board inlet end; 9. board outlet end; 10. conveying gap. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0025] Example

[0026] Reference Figure 1 As shown, in one embodiment of the utility model, a floating leakage-proof device is used in conjunction with a soaking tank 4 to prevent leakage at the outlet 42 of the outlet plate end 9 and the inlet plate end 8 of the soaking tank 4. A plurality of parallel conveying roller groups are arranged inside and outside the soaking tank 4. The plurality of conveying roller groups are used to convey the tray 5 into and out of the soaking tank 4. Any conveying roller group includes an upper conveying roller and a lower conveying roller arranged up and down. A gap is provided between the surfaces of the upper conveying roller and the lower conveying roller. The tray 5 is driven to move in the gap by the upper conveying roller and the lower conveying roller. In the plurality of conveying roller groups, the following are included:

[0027] The first conveying roller group 1 is arranged outside the soaking tank 4 and is respectively located at the outlet 42 of the plate outlet end 9 and the inlet of the plate inlet end 8 of the soaking tank 4. The upper conveying roller 12 and the lower conveying roller 11 of the first conveying roller group 1 are arranged up and down and respectively abut against the groove walls on the upper and lower sides of the outlet 42 and the inlet of the soaking tank 4. The two ends of the upper conveying roller 12 and the lower conveying roller 11 are slidably connected to the soaking tank 4 up and down. In other embodiments, the upper conveying roller 12 and the lower conveying roller 11 are also connected to the soaking tank body 43 by a spring. When no tray 5 passes through, the upper conveying roller 12 and the lower conveying roller 11 of the first conveying roller group 1 are in a tight state to seal the outlet 42 and the inlet to prevent the soaking liquid 41 from leaking. When the tray 5 moves to the upper of the first conveying roller group 1 at the plate inlet end 8 When the tray 5 is between the conveying roller 12 and the lower conveying roller 11, the tray 5 pushes the upper conveying roller 12 and the lower conveying roller 11 apart, so that the upper conveying roller 12 and the lower conveying roller 11 can move away from each other in the vertical direction to form a conveying gap 10, and the tray 5 passes through the conveying gap 10 and passes through the entrance to enter the soaking tank 4. When the tail of the tray 5 leaves the conveying gap 10, under the action of elastic force or gravity, the upper conveying roller 12 approaches and finally presses against the lower conveying roller 11 to close the entrance, wherein the lower conveying roller 11 at the inlet end 8 and the outlet end 9 presses against the edges of the outlet 42 and the entrance respectively. Since the surfaces of the upper conveying roller 12 and the lower conveying roller 11 are provided with flexible materials, the surface of the lower conveying roller 11 matches the edges of the outlet 42 and the entrance and partially extends into the outlet 42 and the entrance.

[0028] A floating leak-proof component is arranged in the soaking tank 4 and is respectively located at the outlet 42 and the inlet. The floating leak-proof component includes a floating body 2 made of a flexible material. The flexible material has buoyancy and is light in weight. The floating body 2 floats in the soaking liquid 41 of the soaking tank 4 and is located below the conveying direction of the tray 5. The floating body 2 extends along the length direction of the lower conveying roller 11. The floating body 2 is located between adjacent conveying roller groups. When the tray 5 passes over the floating body 2, the tray 5 slightly presses down the floating body 2. The floating body 2 maintains a floating state through buoyancy and presses against the bottom of the lower conveying roller 11 and the tray 5 at the same time, sealing the gap between the lower conveying roller 11 and the bottom hollow of the tray 5 to achieve leak-proofing.

[0029] In one embodiment of the present invention, referring to Figure 1 and 3 As shown, the floating leakage-proof component also includes a connecting shaft 3 arranged in the soaking tank 4, and both ends of the connecting shaft 3 are fixed to the soaking tank body 43 through a fixing seat 6. The connecting shaft 3 extends along the axial direction of the lower conveying roller 11, and the floating body 2 is movably connected to the connecting shaft 3. The floating body 2 can float in the up and down directions on the connecting shaft 3, so that the tray 5 can press the floating body 2 downward.

[0030] In one embodiment of the present invention, referring to Figure 4 As shown, the floating body 2 is provided with a through hole 24, and the through hole 24 is set as a bar hole. The connecting shaft 3 passes through and rotates to connect the bar hole. The function of the bar hole is to facilitate the floating body 2 to float up and down. In other embodiments, the through hole 24 can be set as a circular hole.

[0031] In one embodiment of the present invention, referring to Figure 4 As shown, the floating body 2 is provided with a first weight-reducing hole 23 and a second weight-reducing hole 25 , and the first weight-reducing hole 23 and the second weight-reducing hole 25 , the circular hole and the strip hole are coaxial.

[0032] In one embodiment of the present invention, referring to Figure 3 As shown, since the bottom of part of the tray 5 is a non-planar structure, a plurality of the floating bodies 2 are arranged on the connecting shaft 3, and the plurality of the floating bodies 2 are distributed along the length direction of the connecting shaft 3, and adjacent floating bodies 2 abut against each other. The split floating bodies 2 are used to match the bottom of the tray 5 to improve the sealing effect.

[0033] In one embodiment of the present invention, referring to Figure 4As shown, the floating body 2 is provided with a first protrusion 22 and a second protrusion 21, and the first protrusion 22 and the second protrusion 21 extend along the length direction of the connecting shaft 3, and the first protrusion 22 and the second protrusion 21 are used for the bottom of the tray 5 and the lower conveying roller 11 of the first conveying roller group 1 respectively, wherein the first protrusion 22 uses buoyancy to press against the bottom of the tray 5, and when the floating body 2 is in a balanced state, the second protrusion 21 abuts against the surface of the lower conveying roller 11, specifically, the second protrusion 21 abuts against the part of the lower conveying roller 11 extending into the outlet 42 and the inlet.

[0034] In one embodiment of the present invention, the floating body 2 is made of polypropylene material, which has a small mass and a large buoyancy.

[0035] In one embodiment of the present invention, referring to Figure 1 As shown, the conveying roller group also includes a second conveying roller group 7 arranged inside the immersion tank 4 and close to the outlet 42 and the inlet respectively. The second conveying roller group 7 is arranged in parallel with the first conveying roller group 1. The second conveying roller group 7 also includes an upper conveying roller and a lower conveying roller arranged in parallel up and down. A gap 71 for conveying the tray 5 is provided between the upper conveying roller and the lower conveying roller of the second conveying roller group 7. After the tray 5 enters the immersion tank 4, the head of the tray 5 passes through the gap 71 of the second conveying roller group 7.

[0036] In one embodiment of the present invention, referring to Figure 1 As shown, the floating body 2 and the connecting shaft 3 are both located between the lower conveying roller of the second conveying roller set 7 and the lower conveying roller 11 of the first conveying roller set 1 .

[0037] The working principle of the floating leakage-proof device of the utility model is:

[0038] When the conveying roller group conveys the tray 5 to the entrance of the board inlet end 8, the tray 5 pushes the upper conveying roller 12 of the first conveying roller group 1 upward to enter the immersion tank 4 from the entrance. At this time, the upper conveying roller 12 and the lower conveying roller 11 are respectively tightly abutted against the top and bottom of the tray 5 to prevent the immersion liquid 41 in the immersion tank 4 from leaking from the gap between the first conveying roller group and the tray 5. Then, when the head of the tray 5 moves above the floating body 2, it presses down the floating body 2. Under the action of buoyancy, the floating body 2 remains in a floating state, and the first protrusion 22 abuts against the bottom of the tray 5. After the floating body 2 is balanced, the second protrusion 21 abuts against the surface of the lower conveying roller 11, thereby tightly sealing the gap between the hollow part of the tray 5 and the lower conveying roller 11, until the tail of the tray 5 completely enters the immersion tank 4, the upper conveying roller 12 and the lower conveying roller 11 of the first conveying roller group 1 are re-fitted to block the outlet 42, and the tray 5 passes through the outlet 42 in the same way when it moves to the board outlet end 9.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A floating leak-proof device, characterized in that: include, A first conveying roller group is arranged outside the soaking tank and located at the inlet and outlet of the soaking tank, the first conveying roller group includes an upper conveying roller and a lower conveying roller arranged up and down and abutting against the soaking tank, the upper conveying roller and the lower conveying roller can move away from or approach each other and abut against each other to form a conveying gap or close the inlet and the outlet respectively, and the tray passes through the conveying gap through the inlet and enters the soaking tank, wherein the lower conveying roller abuts against the edges of the inlet and the outlet; A floating leak-proof component is arranged in the soaking tank and is located at the inlet and the outlet. The floating leak-proof component includes a floating body made of a flexible material. The floating body floats in the soaking liquid in the soaking tank and is located below the conveying direction of the tray. The floating body extends along the length direction of the lower conveying roller. The floating body presses against the lower conveying roller and the bottom of the tray at the same time through buoyancy.

2. A floating leakage-proof device according to claim 1, characterized in that: The floating leakage-proof component also includes a connecting shaft arranged in the soaking tank, the connecting shaft extends along the axial direction of the lower conveying roller, and the floating body is movably connected to the connecting shaft.

3. A floating leakage-proof device according to claim 2, characterized in that: The floating body is provided with a through hole, which includes a circular hole or a bar-shaped hole, and the connecting shaft passes through the circular hole and the bar-shaped hole.

4. A floating leakage-proof device according to claim 3, characterized in that: The floating body is provided with a plurality of weight-reducing holes, and the weight-reducing holes, the circular holes and the strip holes are coaxial.

5. A floating leakage-proof device according to claim 2, characterized in that: A plurality of the floating bodies are arranged on the connecting shaft, distributed along the length direction of the connecting shaft, and adjacent floating bodies abut against each other.

6. A floating leakage-proof device according to claim 2, characterized in that: The floating body is provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion extend along the length direction of the connecting shaft, and the first protrusion and the second protrusion respectively contact the bottom of the tray and the lower conveying roller of the first conveying roller group.

7. A floating leakage-proof device according to claim 1, characterized in that: The floating body is made of polypropylene material.

8. A floating leakage-proof device according to claim 1, characterized in that: It also includes a plurality of second conveying roller groups arranged inside the immersion tank, the plurality of second conveying roller groups are arranged parallel to the first conveying roller group, the second conveying roller group includes an upper conveying roller and a lower conveying roller arranged parallel to each other, and a gap is provided between the upper conveying roller and the lower conveying roller of the second conveying roller group for conveying the tray.

9. A floating leakage-proof device according to claim 8, characterized in that: The floating body is located between the lower conveying roller of the second conveying roller group and the lower conveying roller of the first conveying roller group.

10. A floating leakage-proof device according to claim 1, characterized in that: The floating leakage-blocking assembly and the first conveying roller group are disposed at both ends of the soaking tank.

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