CN219244183U

CN219244183U - PCB anti-scratch drying mechanism

Info

Publication number: CN219244183U
Application number: CN202320731827.4U
Authority: CN
Inventors: 钟根带; 万小亮; 黎钦源
Original assignee: Guangzhou Guanghe Technology Co Ltd
Current assignee: Guangzhou Guanghe Technology Co Ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-06-23
Anticipated expiration: 2033-04-06

Abstract

The utility model relates to the technical field of PCB processing, and particularly discloses a PCB anti-scratch drying mechanism, which comprises a bracket, a water-absorbing roller assembly, a drying assembly and a wetting assembly, wherein the water-absorbing roller assembly is arranged on the bracket and is used for extruding water of a workpiece passing through the water-absorbing roller assembly; the drying component is arranged on the bracket and is positioned at the downstream of the water-absorbing roller component and used for drying the workpiece; the wetting assembly is arranged on the bracket, and is configured to supply water to the water-absorbing roller assembly when the interval time of the supply of two adjacent workpieces exceeds a preset value, and keep the sponge roller of the water-absorbing roller assembly moist. This PCB anti-scratch stoving mechanism has avoided the work piece to be by the condition of the irregular cylinder stick body scratch of beating from top to bottom when absorbing water roller assembly through above-mentioned setting.

Description

PCB anti-scratch drying mechanism

Technical Field

The utility model relates to the technical field of PCB processing, in particular to a PCB anti-scratch drying mechanism.

Background

The horizontal lines encountered in the PCB production process mainly comprise copper reduction lines, washing lines, deburring lines, grinding lines and the like. The horizontal line has a characteristic that a water-absorbing sponge roller is arranged in front of the drying section and is used for extruding the PCB with water, so that a large amount of water on the PCB is extruded out to prepare for drying of the lower section.

When the PCB with water continuously passes through the water-absorbing sponge roller, the water-absorbing sponge roller can keep a wet state. However, when the discharging of the horizontal line is interrupted due to other operations, no PCB passes through, the horizontal line is driven as is, the water-absorbing sponge roller is not newly added with water at the moment, and the hot air supply of the rear drying section is continuously blown to dry the water vapor of the water-absorbing sponge roller, so that the water-absorbing sponge roller becomes dry and hard. Because of the non-uniformity of hot air and the non-uniformity of the material of the water absorbing sponge roller, the water absorbing sponge roller is easy to deform into an irregular round bar body, and the jumping is generated under the effect of conveying. When the PCB is put again, the water-absorbing sponge roller is hard, and the PCB jumps up and down due to the irregular round bar body, and when the PCB passes through the water-absorbing sponge roller, the copper sheet is scratched by the hard water-absorbing sponge roller, so that the PCB is scraped to be scrapped.

Therefore, research on a PCB anti-scratch drying mechanism is needed to solve the problem that the water-absorbing sponge roller is hard, so that the PCB is scratched.

Disclosure of Invention

The utility model aims to provide a PCB anti-scratch drying mechanism, which aims to solve the problem that a water-absorbing sponge roller is hard so as to scratch a PCB.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a PCB anti-scratch drying mechanism, which comprises:

a bracket;

the water-absorbing roller assembly is arranged on the bracket and used for extruding water passing through a workpiece of the water-absorbing roller assembly;

the drying component is arranged on the bracket and positioned at the downstream of the water-absorbing roller component and is used for drying the workpiece;

and the wetting assembly is arranged on the bracket, and is configured to supply water to the water-absorbing roller assembly when the interval time between the supply of two adjacent workpieces exceeds a preset value, and keep the sponge roller of the water-absorbing roller assembly moist.

As an alternative technical scheme of PCB anti-scratch stoving mechanism, moist subassembly includes water spray assembly, water spray assembly includes spray pipe and solenoid valve, the one end and the water source intercommunication of spray pipe, the other end of spray pipe is located the top of sponge gyro wheel, the solenoid valve is regularly opened, and makes water spray to the sponge gyro wheel.

As an alternative technical scheme of PCB anti-scratch stoving mechanism, the water spray subassembly includes the detection spare, the detection spare is located the support is used for detecting the work piece, can't detect in the preset time the work piece then sends early warning signal, the controller is according to early warning signal control the solenoid valve is opened.

As an alternative technical scheme of PCB anti-scratch drying mechanism, the water spray assembly comprises a spray header, and the spray header is arranged at the other end of the water spray pipe.

As an alternative technical scheme of PCB anti-scratch stoving mechanism, the shower head is semi-cylindrical structure, the diameter of shower head is greater than the diameter of sponge gyro wheel, the shower head cover is located the upside of sponge gyro wheel, the shower head orientation one side of sponge gyro wheel is equipped with a plurality of matrix arrangement's orifice.

As an alternative technical scheme of PCB anti-scratch drying mechanism, at least the rear side of the sponge roller is provided with the spray header, and the spray header at the rear side of the sponge roller is positioned at the upstream of the drying component.

As an alternative technical scheme of the PCB anti-scratch drying mechanism, the spray header is of a strip-shaped structure; and the extending direction is parallel to the axis of the sponge roller, and the spray header is provided with a plurality of spray holes which are arranged in a matrix shape.

As an optional technical scheme of PCB anti-scratch stoving mechanism, absorb water the gyro wheel subassembly, including at least one go up sponge gyro wheel and at least one sponge gyro wheel down, go up the sponge gyro wheel with sponge gyro wheel down all rotates and locates the support, just go up the sponge gyro wheel is located sponge gyro wheel top down, moist subassembly provides water through go up the sponge gyro wheel and flow direction sponge gyro wheel down.

As an alternative technical scheme of PCB anti-scratch stoving mechanism, stoving subassembly includes two air knives, two the air knives is all located the support, and two the air outlet of air knives sets up relatively.

As an optional technical scheme of PCB anti-scratch stoving mechanism, PCB anti-scratch stoving mechanism includes first drive assembly, first drive assembly is located the support, and is located the gyro wheel subassembly that absorbs water is upstream, is used for with the work piece transfer extremely the gyro wheel subassembly that absorbs water.

The beneficial effects of the utility model are as follows:

the utility model provides a PCB anti-scratch drying mechanism, which is characterized in that a wetting assembly is arranged on a bracket, water is provided for a water absorbing roller assembly according to the supply interval time of two adjacent workpieces, so that the water absorbing roller assembly is kept in a wet state, the problem that a sponge roller forms an irregular round bar body due to the fact that the water absorbing roller assembly is dried and hardened under the action of the drying assembly is avoided, the situation that a follow-up PCB is scratched by an irregular cylindrical bar body jumping up and down when passing through the water absorbing roller assembly is avoided, and the problem of PCB scratch is solved.

Drawings

Fig. 1 is a schematic structural view of a PCB anti-scratch drying mechanism according to an embodiment of the present utility model, including a drip assembly;

fig. 2 is a schematic structural diagram of a PCB anti-scratch drying mechanism according to an embodiment of the present utility model, including a water spray assembly.

In the figure:

1、PCB；

100. a water-absorbing roller assembly; 110. a sponge roller is arranged; 120. a lower sponge roller;

200. a drying assembly; 210. an air knife;

310. a drip assembly; 320. a water spray assembly; 321. a water spray pipe; 322. an electromagnetic valve; 323. a detecting member; 324. a controller; 325. a spray header;

400. a first transmission assembly;

500. a second transmission assembly;

600. and a third transmission assembly.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1-2, the present embodiment provides a PCB scratch prevention drying mechanism, which includes a bracket (not shown), a water absorbing roller assembly 100, a drying assembly 200 and a wetting assembly, wherein the water absorbing roller assembly 100 is disposed on the bracket for extruding water passing through a workpiece of the water absorbing roller assembly 100; the drying component 200 is arranged on the bracket and is positioned at the downstream of the water absorbing roller component 100 and is used for drying the workpiece; the wetting assembly is provided to the bracket, and is used to supply water to the suction roller assembly 100 and keep the sponge roller of the suction roller assembly 100 wet.

In this embodiment, the workpiece may be the PCB1, and in other embodiments, the workpiece may be a component of other plate structures. For convenience of description and understanding, the PCB1 is described as a work piece in this embodiment.

This PCB anti-scratch stoving mechanism is through setting up moist subassembly on the support for to the gyro wheel subassembly 100 that absorbs water provides water, so that the gyro wheel subassembly 100 that absorbs water keeps moist state, avoided under the effect of stoving subassembly 200, the gyro wheel subassembly 100 that absorbs water becomes dry hard, thereby lead to the sponge gyro wheel to form the irregular round bar body, and then avoided follow-up PCB1 to be beaten by the condition of the irregular cylinder bar body scratch of beating from top to bottom when absorbing water gyro wheel subassembly 100, solved the problem of PCB1 scratch.

With respect to the specific structure of the wetting assembly, in this embodiment, the wetting assembly includes a drip assembly 310, and the drip assembly 310 can drip water, and the dripped water is absorbed by the sponge roller. In one implementation of this embodiment, the drip assembly 310 includes a conduit having one end in communication with a water source and the other end positioned on the upper side of the sponge roller. In another implementation of this embodiment, the drip assembly 310 includes a pipeline, one end of the pipeline is communicated with a water source, the other end of the pipeline is plugged, the pipeline is provided with a plurality of water outlets, the water outlets are arranged at intervals and are located above the sponge roller, the axis of the pipeline is parallel to the axis of the sponge roller, and the pipeline is located on the upper side of the sponge roller. The water dripping is uniform. In yet another implementation of this embodiment, the drip assembly 310 includes a drip chamber for holding water and a conduit having one end in communication with the drip chamber and the other end on an upper side of the sponge roller. The mechanism is simple and low in cost, so that intermittent water supply to the sponge roller is realized, and the situation that the sponge roller is dried and hardened in a time period without passing through the PCB1 is avoided. Further, the drip box body is provided with a water outlet, and one end of the pipeline is communicated with the water outlet. The water outlet is a tiny hole structure. In this embodiment, the diameter of the water outlet may be 1mm. In other embodiments, the diameter of the water outlet may be 0.5mm. In other embodiments, the diameter of the water outlet may be 1.5mm. In other embodiments, the diameter of the water outlet may be 3mm. In other embodiments, the diameter of the water outlet may be 5mm. In other embodiments, the diameter of the water outlet may be 10mm, and the pipeline is provided with a valve for adjusting the water outlet of the pipeline, so that the water outlet end of the pipeline maintains a suitable water outlet. The water outlet speed can be determined according to the size of the sponge roller and the time of the transmission interval of the PCB 1. The method for determining the water outlet speed according to the characteristics of the sponge roller is well known to those skilled in the art, and will not be described in detail herein.

In another embodiment, the wetting assembly may supply water to the water sucking roller assembly 100 according to the interval time of supply of the adjacent two PCBs 1. Specifically, the wetting assembly includes a water spray assembly 320, and the water spray assembly 320 can intermittently spray water to the sponge roller of the water suction roller assembly 100. The mode of timing water spraying is favorable for saving water sources to a certain extent and reducing cost.

Specifically, the water spraying assembly 320 includes a water spraying pipe 321 and an electromagnetic valve 322, wherein one end of the water spraying pipe 321 is communicated with a water source, the other end of the water spraying pipe 321 is positioned above the sponge roller, and the electromagnetic valve 322 is opened at regular time to spray water to the sponge roller. The controller 324 controls the opening and closing of the electromagnetic valve 322, when the electromagnetic valve 322 is opened, water can be sprayed to the sponge roller, and when the electromagnetic valve 322 is closed, water flow of the water spraying pipe 321 is cut off. By means of the control mode of the controller 324, intermittent water spraying of the water spraying pipe 321 is convenient to achieve, and the device is simple in structure and accurate in control. The principle of the controller 324 controlling the opening and closing of the solenoid valve 322 is well known to those skilled in the art, and thus will not be described herein.

When the PCB1 passes through, water on the PCB1 can be continuously absorbed by the sponge roller, so that the sponge roller is kept in a wet state, at the moment, the water spraying pipe 321 is not required to spray water, so that unnecessary waste is avoided, in the embodiment, the water spraying component 320 comprises a detection piece 323, the detection piece 323 is arranged on a support and used for detecting the PCB1, when the detection piece 323 cannot detect the PCB1 in preset time, an early warning signal is sent, and the controller 324 controls the electromagnetic valve 322 to be opened according to the early warning signal. Specifically, the controller 324 may control the solenoid valve 322 to be opened once every 30 minutes in a state where the PCB1 does not pass. The solenoid valve 322 may be opened for a time of 1s-30s each time. In other words, after the last PCB1 passes the detecting member 323 for 30min, no new PCB1 passes the detecting member 323 yet, the controller 324 controls the solenoid valve 322 to be opened for 10s; if there is a PCB1 passing the sensing piece 323 within 30 minutes thereafter, the time elapsed from the PCB1 is restarted. In other words, as long as the time interval between the front and rear PCBs 1 passing the detecting member 323 exceeds 30min, water is sprayed at least once, and the sponge roller can be kept wet for at least 30 min. In other embodiments, the solenoid valve 322 is open for 5 seconds each time. In other embodiments, the number of seconds that the solenoid valve 322 is opened can be reasonably controlled according to the flow rate of the water spraying pipe 321, when the flow rate of the water spraying pipe 321 is large, the number of seconds that the solenoid valve 322 is opened each time can be controlled to be smaller, and when the flow rate of the water spraying pipe 321 is small, the number of seconds that the solenoid valve 322 is opened each time can be controlled to be larger, so long as the sponge roller can be ensured to be wet, and the method is not particularly limited. The control logic of the controller 324 may be implemented by a PCB programming method or a PLC programming method, and specific control methods are well known to those skilled in the art, and thus are not described herein.

The water spray assembly 320 includes a spray header 325, and the spray header 325 is disposed at the other end of the spray pipe 321. The shower head 325 can uniformly spray water.

The spray header 325 is of a semi-cylindrical structure, the diameter of the spray header 325 is larger than that of the sponge roller, the spray header 325 is covered on the upper side of the sponge roller, and a plurality of spray holes which are arranged in a matrix shape are arranged on one side of the spray header 325, which faces the sponge roller. This arrangement allows water to be sprayed more evenly onto the sponge roller.

Regarding the position of the spray header 325, in this embodiment, at least the rear side of the sponge roller is provided with the spray header 325, and the spray header 325 at the rear side of the sponge roller is located upstream of the drying assembly 200. Specifically, the spray orifices of the spray header 325 are angled downward. The spray header 325 sprays water that is inclined from top to bottom toward the sponge roller.

In this embodiment, the water absorbing roller assembly 100 includes at least one upper sponge roller 110 and at least one lower sponge roller 120, the upper sponge roller 110 and the lower sponge roller 120 are both rotatably disposed on the support, and the upper sponge roller 110 is disposed above the lower sponge roller 120, and water provided by the wetting assembly flows through the upper sponge roller 110 and flows down to the sponge roller 120. This arrangement allows water on both the upper and lower faces of the PCB1 to be squeezed out. Specifically, two upper sponge rollers 110 and two lower sponge rollers 120 are provided, two upper sponge rollers 110 are arranged in parallel, and two lower sponge rollers 120 are arranged in parallel. The water sprayed from the spray header 325 can cover the two upper sponge rollers 110.

The water sprayed from the spray header 325 is directed toward the upper sponge roller 110. Because the upper sponge roller 110 turns counterclockwise, the water can be carried over and the whole upper sponge roller 110 is wetted, and when the upper sponge roller 110 is wetted, the excessive water drops down onto the lower sponge roller 120. In other embodiments, the water sprayed from the spray header 325 can be sprayed onto both the upper sponge roller 110 and the lower sponge roller 120.

In this embodiment, further, the shower head 325 has a long strip structure; and the extending direction is parallel to the axis of the upper sponge roller 110, and the spray header 325 is provided with a plurality of spray holes arranged in a matrix shape. In this embodiment, the drying assembly 200 includes two air knives 210, the two air knives 210 are all disposed on the support, and the air outlets of the two air knives 210 are disposed opposite to each other. The PCB1 passes through a gap between two air knives 210, and the two air knives 210 are used for drying an upper plate surface and a lower plate surface of the PCB 1.

To facilitate the transmission of the PCB1, in this embodiment, the PCB anti-scratch drying mechanism includes a first transmission assembly 400, where the first transmission assembly 400 is disposed on a bracket and is located upstream of the water absorbing roller assembly 100, so as to transfer the PCB1 to the water absorbing roller assembly 100. The first transmission assembly 400 comprises a first upper transmission wheel, a first lower transmission wheel and a first power piece, wherein the first upper transmission wheel and the first lower transmission wheel are both rotatably arranged on the bracket, and the first power piece is arranged on the bracket and is in transmission connection with the first lower transmission wheel. The first power parts can be two, and the first upper driving wheel and the first lower driving wheel are respectively driven.

The PCB anti-scratch drying mechanism comprises a second transmission assembly 500, wherein the second transmission assembly 500 is arranged on a bracket and is positioned between the water absorbing roller assembly 100 and the drying assembly 200 for transmitting the PCB1 to the drying assembly 200. The second transmission assembly 500 comprises a second upper transmission wheel, a second lower transmission wheel and a second power piece, wherein the second upper transmission wheel and the second lower transmission wheel are both rotatably arranged on the bracket, and the second power piece is arranged on the bracket and is in transmission connection with the second lower transmission wheel. The second power parts can be two, and the second upper driving wheel and the second lower driving wheel are respectively driven.

The PCB anti-scratch drying mechanism comprises a third transmission assembly 600, wherein the third transmission assembly 600 is arranged on a bracket and positioned at the downstream of the drying assembly 200, and is used for transmitting the PCB1 out of the PCB anti-scratch drying mechanism. The third transmission assembly 600 includes a third upper transmission wheel, a third lower transmission wheel and a third power element, wherein the third upper transmission wheel and the third lower transmission wheel are both rotatably arranged on the bracket, and the third power element is arranged on the bracket and is in transmission connection with the third lower transmission wheel. The third driving part can be two, and the third upper driving wheel and the third lower driving wheel are respectively driven.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The utility model provides a PCB anti-scratch stoving mechanism which characterized in that includes:

a bracket;

the water-absorbing roller assembly (100) is arranged on the bracket and is used for extruding water passing through a workpiece of the water-absorbing roller assembly (100);

the drying assembly (200) is arranged on the bracket and positioned at the downstream of the water absorbing roller assembly (100) and is used for drying the workpiece;

and the wetting assembly is arranged on the bracket, and is configured to supply water to the water absorbing roller assembly (100) when the interval time between the supply of two adjacent workpieces exceeds a preset value, and keep the sponge roller of the water absorbing roller assembly (100) moist.

2. The PCB anti-scratch drying mechanism of claim 1, wherein the wetting assembly comprises a water spray assembly (320), the water spray assembly (320) comprises a water spray pipe (321) and a solenoid valve (322), one end of the water spray pipe (321) is communicated with a water source, the other end of the water spray pipe (321) is located above the sponge roller, and the solenoid valve (322) is opened at regular time and sprays water to the sponge roller.

3. The PCB anti-scratch drying mechanism of claim 2, wherein the water spray assembly (320) comprises a detecting member (323), the detecting member (323) is disposed on the bracket and is configured to detect the workpiece, and send an early warning signal when the workpiece is not detected within a preset time, and the controller (324) controls the electromagnetic valve (322) to be opened according to the early warning signal.

4. The PCB anti-scratch drying mechanism of claim 3, wherein the water spray assembly (320) comprises a spray header (325), the spray header (325) being provided at the other end of the water spray pipe (321).

5. The PCB anti-scratch drying mechanism according to claim 4, wherein the spray header (325) has a semi-cylindrical structure, the diameter of the spray header (325) is larger than that of the sponge roller, the spray header (325) is covered on the upper side of the sponge roller, and a plurality of spray holes arranged in a matrix form are provided on the side of the spray header (325) facing the sponge roller.

6. The PCB anti-scratch drying mechanism of claim 4, wherein at least a rear side of said sponge roller is provided with said spray header (325), said spray header (325) of said sponge roller rear side being located upstream of said drying assembly (200).

7. The PCB anti-scratch drying mechanism of claim 6, wherein said showerhead (325) is a strip-like structure; and the extending direction is parallel to the axis of the sponge roller, and the spray header (325) is provided with a plurality of spray holes which are arranged in a matrix shape.

8. The PCB scratch pad drying mechanism of any of claims 1-7, wherein said water absorbing roller assembly (100) comprises at least one upper sponge roller (110) and at least one lower sponge roller (120), said upper sponge roller (110) and said lower sponge roller (120) are both rotatably mounted to said frame, and said upper sponge roller (110) is positioned above said lower sponge roller (120), and water provided by said wetting assembly passes through said upper sponge roller (110) and flows to said lower sponge roller (120).

9. The PCB scratch resistant flower drying mechanism of any one of claims 1-7, wherein said drying assembly (200) comprises two air knives (210), both of said air knives (210) are disposed on said support, and the air outlets of both of said air knives (210) are disposed opposite to each other.

10. The PCB scratch pad drying mechanism of any one of claims 1-7, comprising a first drive assembly (400), said first drive assembly (400) being disposed on said bracket and upstream of said suction roller assembly (100) for transferring said workpiece to said suction roller assembly (100).