CN212727584U

CN212727584U - A washing device for after PCB brown ization

Info

Publication number: CN212727584U
Application number: CN202020847744.8U
Authority: CN
Inventors: 王侃; 周建林; 许峰; 王铁池
Original assignee: Unimicron Electronics Kunshan Co ltd
Current assignee: Unimicron Electronics Kunshan Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-03-16
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a washing device used after PCB browning, which is used for washing the PCB after browning and comprises a water pump, a washing tank, a first pipeline, a second pipeline, a first filtering piece and a second filtering piece; the washing tank is used for placing the PCB, and gaps are formed between the front surface and the back surface of the PCB and the inner wall of the washing tank; the two ends of the first pipeline are respectively communicated with a water outlet of the water pump and the rinsing bath so as to convey water in the water pump into the rinsing bath, one end of the first pipeline, which is communicated with the rinsing bath, is provided with a first branched pipe and a second branched pipe, the first branched pipe is communicated with the rinsing bath so as to clean the front side of the PCB, and the second branched pipe is communicated with the rinsing bath so as to clean the back side of the PCB; two ends of the second pipeline are respectively communicated with a water inlet of the water pump and the rinsing bath so as to recycle water in the rinsing bath into the water pump; the first filter is arranged in the first pipeline, and the second filter is arranged in the second pipeline. This scheme can ensure PCB's cleanliness, can the water economy resource again.

Description

A washing device for after PCB brown ization

Technical Field

The utility model relates to a PCB makes technical field, and specific is a washing unit that is used for after PCB palm ization.

Background

The PCB (Printed Circuit Board) substrate needs to be subjected to browning pretreatment before being laminated with PP (pre Prepreg), wherein browning is to remove foreign matters such as oxides, grease, residual dry films and fingerprints on the surface of the PCB substrate through acid-base washing, and the roughness of the copper surface is increased through chemical reaction between liquid medicine and the copper surface of the PCB substrate, so that the effects of activating the copper surface and roughening the surface of the copper surface are achieved, and the bonding force between the PP and the PCB substrate is increased, and the PCB (Printed Circuit Board) is suitable for manufacturing a multilayer Circuit Board.

The procedure of the browning process is that the PCB is usually subjected to acid washing, water washing, alkali washing, water washing, presoaking, browning, water washing and drying. Meaning that the browned PCB needs to be washed by water to remove the liquid medicine on the surface and then dried. In the washing process after the browning of the PCB, the PCB is usually cleaned in a running water overflow mode so as to improve the cleaning degree of the cleaning, but if the PCB is cleaned by adopting continuous new running water, the water resource consumption is overlarge, and the saving of energy and cost is not facilitated. Therefore, how to ensure the cleanliness of the PCB and save water resources is a technical problem that is continuously solved by the technicians in the field.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides a washing device for after PCB palm ization, it is used for solving above-mentioned problem.

The embodiment of the application discloses: a water washing device used for PCB browning is used for washing the PCB after browning and comprises a water pump, a water washing tank, a first pipeline, a second pipeline, a first filtering piece and a second filtering piece; the washing tank is used for placing the PCB, and gaps are formed between the front surface and the back surface of the PCB and the inner wall of the washing tank; two ends of the first pipeline are respectively communicated with a water outlet of the water pump and the rinsing bath so as to convey water in the water pump into the rinsing bath, one end of the first pipeline communicated with the rinsing bath is provided with a first branched pipe and a second branched pipe, the first branched pipe is communicated with the rinsing bath so as to clean the front side of the PCB, and the second branched pipe is communicated with the rinsing bath so as to clean the back side of the PCB; two ends of the second pipeline are respectively communicated with a water inlet of the water pump and the rinsing bath so as to recycle water in the rinsing bath into the water pump; the first filter element is disposed within the first conduit and the second filter element is disposed within the second conduit.

Specifically, the first filtering piece is a PP cotton filter element, and the filtering precision of the PP cotton filter element is 1-1.2 mu m.

Specifically, the first pipeline is provided with a first accommodating part which is communicated with the first pipeline and is used for accommodating the PP cotton filter element, and the axis of the PP cotton filter element is perpendicular to the axis of the first pipeline.

In particular, the second filter element is a filter bag.

Specifically, the second pipeline is provided with a second accommodating part which is communicated with the second pipeline and is used for accommodating the filter bag, and the diameter of the second accommodating part is larger than that of the second pipeline.

Specifically, the first branch pipe and the second branch pipe are respectively provided with a flow meter.

Specifically, the filter pore size of the first filter member is smaller than the filter pore size of the second filter member.

The utility model discloses following beneficial effect has at least: in the washing device for browned PCB in the embodiment, the second pipeline is arranged for recovering water for washing PCB in the washing tank to the water pump, so that the washing water can be recycled within a certain time range, and water resources are saved; the first filtering piece and the second filtering piece are respectively arranged in the first pipeline and the second pipeline, so that the cleanliness of circulating water can be improved, the cleanliness of the PCB after cleaning can be improved, and meanwhile, the PCB can be prevented from being polluted by impurities in the circulating water; in addition, the device also adopts a mode of simultaneously cleaning the front side and the back side of the PCB, so that the cleaning efficiency of the PCB can be improved, and the cleaning cleanliness of the PCB can be further improved.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a washing device used after browning of a PCB in the embodiment of the present invention.

Reference numerals of the above figures: 1. a PCB; 2. a water pump; 3. a rinsing bath; 4. a first conduit; 41. a first branch pipe; 42. a first receptacle portion; 5. a second conduit; 51. a second receptacle portion; 6. a flow meter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the water washing device for browned PCB in this embodiment may be used to wash the surface of browned PCB 1. Which may include a water pump 2, a rinsing bath 3, a first conduit 4, a second conduit 5, a first filter (not shown) and a second filter (not shown).

Here, the rinsing bath 3 may be used to place the PCB1, in other words, the PCB1 is put into the rinsing bath 3 when rinsing is required. The PCB1 has a front side and a back side, both of which have a gap with the inner wall of the rinsing bath 3, or alternatively, neither of the front side and the back side of the PCB1 is against the inner wall of the rinsing bath 3. When the PCB1 is placed in the rinsing bath 3, the four sides of the PCB1 may be clamped by clips, so that the PCB1 enters the rinsing bath 3 with its front and back sides parallel to the side walls of the rinsing bath 3, or the PCB1 enters the rinsing bath 3 with its front and back sides parallel to the bottom surface of the rinsing bath 3.

The first pipeline 4 is used for conveying water in the water pump 2 into the rinsing bath 3 to clean the PCB1, and one end of the first pipeline is communicated with the water pump 2 while the other end of the first pipeline is communicated with the rinsing bath 3. One end of the first pipeline 4 communicated with the rinsing bath 3 can be further provided with a first branch pipe 41 and a second branch pipe respectively, one end of the first branch pipe 41 is communicated with the main pipeline of the first pipeline 4, and the other end of the first branch pipe is communicated with the rinsing bath 3 so as to clean the front surface of the PCB 1; one end of the second branch pipe is communicated with the main pipe of the first pipeline 4, and the other end of the second branch pipe is communicated with the rinsing bath 3 so as to clean the reverse side of the PCB 1. That is, the water washing device in this embodiment can wash the PCB1 from both sides of the PCB to improve the washing efficiency and cleanliness. The second pipeline 5 is used for recovering water in the rinsing bath 3 after the PCB1 is rinsed to the water pump 2, and one end of the second pipeline is communicated with the rinsing bath 3 while the other end is communicated with the water pump 2. Therefore, the water for cleaning the PCB1 can be recycled within a certain use range, and water resources can be saved. The first filter is arranged in the first conduit 4 to filter the water entering the rinsing bath 3 and the second filter is arranged in the second conduit 5 to filter the water entering the water pump 2. First filter can prevent to flow into the impurity pollution PCB1 of the aquatic of washtrough 3, and the second filters the impurity prefilter that can be with the aquatic outside the washtrough 3 that flows out, and first filter and second filter the collocation use, can avoid the impurity circulation flow of aquatic to go into in the washtrough 3 that waters, improves the cleanliness of circulating water, is favorable to improving PCB 1's washing cleanliness factor.

The first filter piece can be an integrated PP cotton filter element with excellent filtering effect, and the filtering precision of the PP cotton filter element can be 1-1.2 mu m. The second filter member may be the same as or different from the first filter member. Because the water that flows out from wash bowl 3 in its impurity is more, and the particle size is also great, consequently, from the angle of practicing thrift the cost, the second is filtered the filter bag that its filtration aperture is greater than the filtration aperture of first filter.

Further, as shown in fig. 1, in order to ensure the filtering effect and the water flow rate, the PP cotton filter element may be disposed on the first pipe 4 in a manner that the axis of the PP cotton filter element is perpendicular to the axis of the first pipe 4, and the water from the water pump 2 flows in from the sidewall of the PP cotton filter element and flows out after being filtered. Correspondingly, the first pipeline 4 is provided with a first accommodating part 42 communicated with the first pipeline 4 and used for accommodating the PP cotton filter element. The second pipeline 5 may be provided with a second accommodating portion 51 communicated with the second pipeline 5 for accommodating the filter bag, and the diameter of the second accommodating portion 51 pair may be larger than that of the second pipeline 5, so that after certain impurities are accumulated in the filter bag, the water flow or water pressure in the second pipeline 5 will not drop suddenly.

As shown in fig. 1, the first branch pipe 41 and the second branch pipe are respectively provided with a flow meter 6 for monitoring the water flow in the corresponding branch pipe, so that a person can know the water flow in the branch pipe in time and replace the first filter in time, and the cleaning effect of the PCB1 is prevented from being influenced by insufficient water flow in the first branch pipe 41 and the second branch pipe.

In summary, in the water washing device for browned PCBs in this embodiment, the second pipeline 5 is provided to recover the water, which is used for washing the PCBs 1 in the water washing tank 3, to the water pump 2, so that the washing water can be recycled within a certain time range, and water resources are saved; the first filtering piece and the second filtering piece are respectively arranged in the first pipeline 4 and the second pipeline 5, so that the cleanliness of circulating water can be improved, the cleanliness of the cleaned PCB1 can be improved, and meanwhile, the pollution of impurities in the circulating water to the PCB1 can be avoided; in addition, the device also adopts a mode of simultaneously cleaning the front side and the back side of the PCB1, so that the cleaning efficiency of the PCB1 can be improved, and the cleaning cleanliness of the PCB1 can be further improved.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. A washing device used for PCB browned is used for washing the browned PCB and is characterized by comprising a water pump, a washing tank, a first pipeline, a second pipeline, a first filtering piece and a second filtering piece; the washing tank is used for placing the PCB, and gaps are formed between the front surface and the back surface of the PCB and the inner wall of the washing tank; two ends of the first pipeline are respectively communicated with a water outlet of the water pump and the rinsing bath so as to convey water in the water pump into the rinsing bath, one end of the first pipeline communicated with the rinsing bath is provided with a first branched pipe and a second branched pipe, the first branched pipe is communicated with the rinsing bath so as to clean the front side of the PCB, and the second branched pipe is communicated with the rinsing bath so as to clean the back side of the PCB; two ends of the second pipeline are respectively communicated with a water inlet of the water pump and the rinsing bath so as to recycle water in the rinsing bath into the water pump; the first filter element is disposed within the first conduit and the second filter element is disposed within the second conduit.

2. The water washing device as claimed in claim 1, wherein the first filter member is a PP cotton filter element having a filter fineness of 1-1.2 μm.

3. The washing device as claimed in claim 2, wherein the first pipe is provided with a first accommodating portion communicated with the first pipe for accommodating the PP cotton filter element, and an axis of the PP cotton filter element is perpendicular to an axis of the first pipe.

4. The water washing apparatus according to claim 1, wherein the second filter member is a filter bag.

5. The washing apparatus as claimed in claim 4, wherein the second pipe is provided with a second receiving portion communicating with the second pipe for receiving the filter bag, and the diameter of the second receiving portion is larger than that of the second pipe.

6. The water washing device as claimed in claim 1, wherein a flow meter is provided on each of the first branch pipe and the second branch pipe.

7. The water washing apparatus according to claim 1, wherein the filter pore size of the first filter member is smaller than the filter pore size of the second filter member.