Wave-soldering discharging mechanism capable of cleaning tin slag on jig

Abstract

The utility model relates to a wave soldering discharge mechanism capable of cleaning jig tin slag, which comprises a cleaning assembly and a connection conveying table, the cleaning assembly is arranged at a discharge port of a wave soldering machine, the connection conveying table is obliquely arranged between the discharge port of the wave soldering machine and an assembly table, a material blocking transfer table is arranged between the assembly table and the connection conveying table, and the material blocking transfer table is connected with the connection conveying table. A tin slag collecting disc is arranged below the connection conveying table, a steel brush of the sweeping assembly conducts sweeping operation on the surfaces of the jigs conveyed to the discharging port through the chain claw track, and tin slag generated through sweeping falls into the tin slag collecting disc. Sweeping operation is carried out at the discharging port of the crest welder through the sweeping assembly, the sweeping assembly makes contact with the step faces on the two sides of the jig, tin slag remaining on the surface of the jig is scraped off through the steel brush in a scraping and wiping mode, the tin slag is collected in the area of the connection conveying table, the tin slag is prevented from entering the area of the assembling table, and the assembling efficiency is improved. And good cleanliness of the assembly table and the circuit board product is ensured, and the yield of the circuit board product is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board assembly production technical field, especially relates to a wave soldering ejection mechanism capable of cleaning jig tin dregs. BACKGROUND

[0002] In the production process of PCBA circuit board, electronic components are inserted and assembled on the circuit board first, then soldering is carried out through the wave soldering machine, and after soldering is completed, the circuit board is transferred on the assembly table through the conveying belt to complete the assembly of the remaining electronic components. Among them, the circuit board completed by the wave soldering machine is directly conveyed to the assembly table, which can reduce the area occupied by the circuit board production line and improve the production efficiency.

[0003] In the soldering operation process, the circuit board needs to be placed in the special jig of the wave soldering machine, and the chain claw track of the wave soldering machine drives the jig and the circuit board to pass through the tin furnace. In order to fill the tin liquid between the pins of the electronic components and the pads of the circuit board, at least 1 / 2 or 2 / 3 of the thickness of the jig will sink into the tin liquid during the travel of the jig in the tin furnace, so that the tin liquid is easy to stay on the step surface of the edge of the jig and become tin dregs after cooling. These tin dregs will be conveyed to the assembly table together with the jig, causing a lot of tin dregs to stick to the assembly table, and the circuit board running on the assembly table will stick to the tin dregs, resulting in poor cleanliness of the circuit board and affecting the quality of the circuit board. SUMMARY

[0004] In order to solve the problems of the prior art, the utility model provides a wave soldering ejection mechanism capable of cleaning jig tin dregs.

[0005] The utility model provides a wave soldering ejection mechanism capable of cleaning jig tin dregs, which comprises a cleaning assembly and a connection conveying table, the cleaning assembly is arranged at the ejection opening of the wave soldering machine, the connection conveying table is arranged between the ejection opening of the wave soldering machine and the assembly table, a material blocking transfer table is arranged between the assembly table and the connection conveying table, a tin dreg collecting disc is arranged below the connection conveying table, the steel brush of the cleaning assembly performs cleaning operation on the surface of the jig conveyed to the ejection opening through the chain claw track, and the tin dregs generated by cleaning fall into the tin dreg collecting disc.

[0006] In some embodiments, the cleaning assembly comprises a mounting plate, a swing plate, a movable plate and a steel brush, the mounting plate is fixed to the inner side of the chain claw track of the wave soldering machine, the mounting plate, the swing plate and the movable plate are connected in sequence, the steel brush is installed on the movable plate, the steel brush is arranged towards the chain claw direction, a first spring is arranged between the movable plate and the swing plate, and the first spring acts on the movable plate to push the steel brush into contact with the surface of the jig conveyed through the chain claw track.

[0007] In some embodiments, the steel brush comprises a brush head, a fixed rod, the brush head is fixed at one end of the fixed rod through a fixed sleeve, and the movable plate is provided with a fixed hole, and the fixed rod is fixed in the fixed hole.

[0008] In some embodiments, two steel brushes are arranged side by side below the movable plate.

[0009] In some embodiments, a first bolt is arranged between the swing plate and the movable plate, and the first spring is sleeved on the first bolt.

[0010] In some embodiments, the mounting plate protrudes towards the swing plate and is provided with a pad, a connecting shaft is arranged between the swing plate and the pad, the swing plate and the movable plate swing up and down around the connecting shaft, the mounting plate is provided with a connecting block, the connecting block is located in the swing direction of the swing plate, a second bolt is arranged between the connecting block and the swing plate, a second spring is sleeved on the second bolt, and the second spring acts between the connecting block and the swing plate.

[0011] In some embodiments, a fixing frame is arranged below the docking conveying table, a supporting screw is arranged between the fixing frame and the docking conveying table, and the height of the docking conveying table is adjusted through the supporting screw.

[0012] In some embodiments, the docking conveying table is provided with a first heat dissipation fan, a second heat dissipation fan and a third heat dissipation fan, the first heat dissipation fan, the second heat dissipation fan and the third heat dissipation fan blow air flow towards the docking conveying table, the first heat dissipation fan is installed on one side of the docking conveying table close to the wave soldering machine through a first support, the second heat dissipation fan is installed on the inclined section of the docking conveying table through a second support, and the third heat dissipation fan is installed on one side of the docking conveying table close to the assembling table through a third support.

[0013] In some embodiments, the tin slag collecting disc is divided into a first tin slag collecting disc and a second tin slag collecting disc, the first tin slag collecting disc is hung at the discharge port of the wave soldering machine and located directly below the cleaning assembly, and the second tin slag collecting disc is fixed on one side of the fixing frame and located directly below the connection between the docking conveying table and the assembling table.

[0014] In some embodiments, the material blocking transfer table comprises a material receiving plate and a blocking strip, the material receiving plate is fixed with the electronic assembling table, the blocking strip is arranged along the edge of the material receiving plate, and is not arranged on the edge of the material receiving plate close to the docking conveying table.

[0015] Compared with the prior art, the wave-soldering discharge mechanism has the beneficial effects that: the cleaning assembly is used for cleaning operation at the discharge port of the wave-soldering machine, the cleaning assembly is in contact with the stepped surface on the two sides of the jig, the tin residue remaining on the surface of the jig is scraped off in the form of scraping and wiping by using the steel brush, and the tin residue is collected in the area of the connecting conveying table, so that the tin residue is prevented from entering the area of the assembly table, the assembly table and the circuit board product have good cleanliness, and the yield of the circuit board product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective structural schematic view of the wave-soldering discharge mechanism capable of cleaning tin residue of a jig according to an embodiment of the present application.

[0017] Figure 2 is a partial perspective structural schematic view of the wave-soldering discharge mechanism capable of cleaning tin residue of a jig according to an embodiment of the present application.

[0018] Figure 3 is a perspective structural schematic view of the cleaning assembly according to an embodiment of the present application.

[0019] Figure 4 is an exploded structural schematic view of the cleaning assembly according to an embodiment of the present application.

[0020] Reference signs: 101, wave-soldering machine; 102, chain claw track; 103, discharge port; 104, assembly table;

[0021] 1, cleaning assembly;

[0022] 2, mounting plate; 21, cushion block; 22, connecting block; 23, second bolt; 24, second spring;

[0023] 3, swing plate; 31, connecting shaft;

[0024] 4, movable plate; 41, fixing hole; 42, first spring; 43, first bolt;

[0025] 5, steel brush; 51, brush head; 52, fixing rod; 53, fixing sleeve;

[0026] 6, connecting conveying table; 61, fixing frame; 62, supporting screw rod; 63, first heat dissipation fan; 64, second heat dissipation fan; 65, third heat dissipation fan; 66, first support; 67, second support; 68, third support;

[0027] 7, material blocking transfer table; 71, material receiving plate; 72, blocking strip;

[0028] 81, first tin residue collecting disc; 82, second tin residue collecting disc;

[0029] 9, jig; 91, stepped surface. DETAILED DESCRIPTION

[0030] The specific implementation of the present application is described with reference to the drawings.

[0031] Reference Figure 1 , the right upper side of the figure is a wave soldering machine 101, the middle part is a connection conveying table 6, and the left lower side is an assembly table 104. After the circuit board is placed in the plug-in electronic component, it is placed in the wave soldering jig 9, and the wave soldering operation is performed in the wave soldering machine 101. After the soldering operation is completed, it is sent to the connection conveying table 6 from the discharge port 103, and then conveyed to the electronic assembly table 104 for assembly of wires and other devices.

[0032] Reference Figures 1 to 4 A wave soldering discharge mechanism capable of cleaning the tin slag of a jig, comprising a cleaning assembly 1 and a connection conveying table 6, the cleaning assembly 1 is arranged at the discharge port 103 of the wave soldering machine 101, the connection conveying table 6 is arranged between the discharge port 103 of the wave soldering machine 101 and the assembly table 104, and the assembly table 104 and the connection conveying table 6 are provided with a material blocking transfer table 7. A tin slag collection tray is arranged below the connection conveying table 6. The steel brush 5 of the cleaning assembly 1 performs cleaning operation on the surface of the jig 9 conveyed to the discharge port 103 through the chain claw track 102. The tin slag generated by cleaning falls into the tin slag collection tray.

[0033] The wave soldering discharge mechanism capable of cleaning the tin slag of the jig 9 of the present application performs cleaning operation at the discharge port 103 of the wave soldering machine 101 through the cleaning assembly 1. The cleaning assembly 1 is in contact with the stepped surface 91 on both sides of the jig 9. The tin slag remaining on the surface of the jig 9 is scraped off by the steel brush 5 in a scraping and wiping manner, and the tin slag is collected in the area of the connection conveying table 6, so that the tin slag does not enter the area of the assembly table 104, ensuring good cleanliness of the assembly table 104 and the circuit board product, and improving the yield of the circuit board product.

[0034] In order to clean the jig 9, in the present embodiment, with reference to Figure 3 and Figure 4 The cleaning assembly 1 comprises a mounting plate 2, a swing plate 3, a movable plate 4 and a steel brush 5. The mounting plate 2 is fixed to the inner side of the chain claw track 102 of the wave soldering machine 101. The mounting plate 2, the swing plate 3 and the movable plate 4 are connected in sequence. The steel brush 5 is installed on the movable plate 4, and the steel brush 5 is arranged towards the chain claw direction. A first spring 42 is arranged between the movable plate 4 and the swing plate 3, and the first spring 42 acts on the movable plate 4 to push the steel brush 5 into contact with the surface of the jig 9 conveyed through the chain claw track 102.

[0035] It can be understood that, thus arranged, the mounting plate 2 is arranged close to the chain claw track 102, the steel brush 5 is located inside the chain claw track 102, the movable plate 4 and the steel brush 5 are pressed downward by the first spring 42, and it is ensured that the steel brush 5 can have sufficient pressure to contact the surface of the jig 9, so that the steel brush 5 can well scrape off the tin dregs.

[0036] In order to install the steel brush 5, in the embodiment, referring to Figure 4 , the steel brush 5 comprises a brush head 51 and a fixed rod 52, the brush head 51 is fixed at one end of the fixed rod 52 through a fixed sleeve 53, and the movable plate 4 is provided with a fixed hole 41 in penetration.

[0037] It can be understood that, thus arranged, the brush head 51 of the steel brush 5 is a metal wire, which ensures that the brush head 51 has sufficient hardness to scrape off the tin dregs, the brush head 51 is fixed on the fixed rod 52 through the fixed sleeve 53, and the fixed rod 52 is in interference fit with the fixed hole 41, so that the steel brush 5 is fixed below the movable plate 4.

[0038] In order to improve the cleaning effect, in the embodiment, referring to Figure 3 and Figure 4 , two steel brushes 5 are arranged side by side below the movable plate 4.

[0039] It can be understood that, thus arranged, in order to avoid the steel brush 5 interfering with the operation of the chain claw track 102, the size of the brush head 51 of the steel brush 5 cannot be too large, so that the area of the single steel brush 5 contacting the surface of the jig 9 is limited, and the two steel brushes 5 can ensure sufficient contact area, thereby ensuring the cleaning effect.

[0040] In order to adjust the pressure between the steel brush 5 and the surface of the jig 9, in the embodiment, referring to Figure 3 and Figure 4 , the first spring 42 is sleeved on the first bolt 43 arranged between the swing plate 3 and the movable plate 4.

[0041] It can be understood that, thus arranged, the first spring 42 is sleeved on the first bolt 43, the distance between the movable plate 4 and the swing plate 3 can be adjusted by screwing the first bolt 43, so as to adjust the compression amount of the first spring 42, the elastic force of the first spring 42 acts on the movable plate 4, thereby adjusting the pressure between the steel brush 5 and the surface of the jig 9.

[0042] In order to avoid the steel brush 5 being stuck to the jig 9, in the embodiment, referring to Figure 4The mounting plate 2 is provided with a pad 21 protruding towards the swing plate 3, a connecting shaft 31 is arranged between the swing plate 3 and the pad 21, the swing plate 3 and the movable plate 4 swing up and down around the connecting shaft 31 as the center, the mounting plate 2 is provided with a connecting block 22, the connecting block 22 is located in the swing direction of the swing plate 3, a second bolt 23 is arranged between the connecting block 22 and the swing plate 3, the second bolt 23 is sleeved with a second spring 24, and the second spring 24 acts between the connecting block and the swing plate 3.

[0043] It can be understood that, in this way, the connecting shaft 31 is a screw that connects the swing plate 3 and the movable plate 4 together, the screw is not tightened to ensure that the movable plate 4 can rotate relative to the swing plate 3, the brush head 51 of the steel brush 5 is made of metal wire, when the jig 9 travels on the steel brush 5, the hardness of the metal wire can ensure that the tin slag is scraped off, the jig 9 will press the brush head 51, so that the steel brush 5 is pushed upwards to the movable plate 4, the movable plate 4 pushes the swing plate 3 to swing upwards around the connecting shaft 31 as the center, and the second spring 24 and the first spring 42 make the steel brush 5 follow the surface of the jig 9 to scrape off the tin slag, and the jig 9 will not be stuck.

[0044] In order to adapt to the height difference between the wave soldering machine 101 and the assembly table 104, in the embodiment, the connecting conveyor table 6 is inclined and arranged between the wave soldering outlet 103 and the assembly table 104. Figure 2 The connecting conveyor table 6 is provided below the fixed frame 61, a supporting screw 62 is arranged between the fixed frame 61 and the connecting conveyor table 6, and the height of the connecting conveyor table 6 is adjusted through the supporting screw 62.

[0045] It can be understood that, in this way, the chain claw track 102 of the wave soldering is inclined, so that the wave soldering outlet 103 is higher than the assembly table 104, so that the connecting conveyor table 6 needs to be inclined between the wave soldering outlet 103 and the assembly table 104, and the height of the two sides of the connecting conveyor table 6 is adjusted through the supporting screw 62, so that the connecting conveyor table 6 can be adaptively adjusted according to the respective heights of the wave soldering machine 101 and the assembly table 104.

[0046] In order to cool the jig 9 and the circuit board on the connecting conveyor table 6, in the embodiment, the first heat dissipation fan 63, the second heat dissipation fan 64 and the third heat dissipation fan 65 are arranged above the connecting conveyor table 6. Figure 2 The first heat dissipation fan 63, the second heat dissipation fan 64 and the third heat dissipation fan 65 blow air flow towards the connecting conveyor table 6, the first heat dissipation fan 63 is installed on one side of the connecting conveyor table 6 close to the wave soldering machine 101 through the first support 66, the second heat dissipation fan 64 is installed on the inclined section of the connecting conveyor table 6 through the second support 67, and the third heat dissipation fan 65 is installed on one side of the connecting conveyor table 6 close to the assembly table 104 through the third support 68.

[0047] It can be understood that, in this way, the first, second and third heat dissipation fans 63, 64 and 65 segmentally abut the jigs 9 and circuit boards on the transfer table 6 to cool them, and at the same time, the airflow blown by the first, second and third heat dissipation fans 63, 64 and 65 to the jigs 9 can blow the small tin dross on the jigs 9 to the transfer table 6.

[0048] In order to collect the tin dross, in the embodiment, referring to Figure 1 and Figure 2 , the tin dross collecting disc is divided into a first tin dross collecting disc 81 and a second tin dross collecting disc 82, the first tin dross collecting disc 81 is hung at the discharge port 103 of the wave soldering machine 101 and located directly below the cleaning assembly 1, and the second tin dross collecting disc 82 is fixed on one side of the fixed frame 61 and located directly below the connection between the transfer table 6 and the assembly table 104.

[0049] It can be understood that, in this way, the discharge port 103 of the wave soldering machine 101 and the connection between the transfer table 6 and the assembly table 104 are both tin dross falling points, and the steel brush 5 can scrape most of the tin dross on the stepped surface 91 of the jig 9, and the brush head 51 of the steel brush 5 has a certain gap, so that part of the small tin dross remains on the stepped surface 91 of the jig 9, at the discharge port 103 of the wave soldering machine 101, the steel brush 5 scrapes most of the tin dross to the first tin dross collecting disc 81, and the small tin dross remaining on the stepped surface 91 of the jig 9 is blown by the first, second and third heat dissipation fans 63, 64 and 65 to the transfer table 6, and the transfer belt of the transfer table 6 carries the tin dross to the connection between the transfer table 6 and the assembly table 104 and drops it into the second tin dross collecting disc 82.

[0050] In order to avoid the tin dross on the transfer table 6 from falling onto the assembly table 104, in the embodiment, referring to Figure 2 , the material blocking transfer table 7 includes a material receiving plate 71 and a blocking strip 72, the material receiving plate 71 is fixed with the electronic assembly table 104, and the blocking strip 72 is arranged along the edge of the material receiving plate 71 and is not arranged on the side edge of the material receiving plate 71 close to the transfer table 6.

[0051] It can be understood that, in this way, the jig 9 of the transfer table 6 is transferred to the material receiving plate 71, and then enters the assembly table 104, the airflow of the third heat dissipation fan 65 is large enough to blow the tin dross on the transfer table 6 to the second tin dross collecting disc 82, and the small tin dross blown to the assembly table 104 falls onto the material receiving plate 71, and the blocking strip 72 blocks the tin dross to ensure that the tin dross does not fall onto the assembly table 104 and ensure the cleanliness of the assembly table 104; the blocking strip 72 is not arranged on the side edge of the material receiving plate 71 close to the transfer table 6, which can ensure that the jig 9 can smoothly fall onto the material receiving plate 71 and facilitate the cleaning of the tin dross on the material receiving plate 71 into the second tin dross collecting disc 82.

[0052] The cleaning assembly 1 of the application performs the cleaning operation on the stepped surface 91 of the jig 9 at the discharge port 103 of the wave soldering machine 101, and the brush head 51 of the steel brush 5 is ensured to be tightly attached to the stepped surface 91 of the jig 9 through the first spring 42 and the second spring 24, so as to scrape the tin dregs on the stepped surface 91 of the jig 9 in a scraping and wiping manner, meanwhile, the steel brush 5 is prevented from being stuck in the jig 9, the scraped tin dregs are collected through the first tin dreg collecting disc 81 and the second tin dreg collecting disc 82, the tin dregs are prevented from entering the area of the assembly table 104, the assembly table 104 and the circuit board product are ensured to have good cleanliness, and the yield of the circuit board product is improved.

[0053] The above is not any limitation on the technical range of the utility model, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model still belong to the range of the technical scheme of the utility model.

Claims

1. A wave solder outfeed mechanism capable of cleaning the solder residue from the fixture, characterized by, The cleaning assembly is arranged at the discharge port of the wave soldering machine, and the connecting conveying table is arranged between the discharge port of the wave soldering machine and the assembling table.

2. The crest weld outfeed mechanism capable of cleaning the jig tin dross according to claim 1, wherein, The cleaning assembly comprises a mounting plate, a swing plate, a movable plate and a steel brush, the mounting plate is fixed to the inner side of the chain claw track of the wave soldering machine, the mounting plate, the swing plate and the movable plate are sequentially connected, the steel brush is arranged on the movable plate, the steel brush is arranged towards the chain claw, a first spring is arranged between the movable plate and the swing plate, and the first spring acts on the movable plate to push the steel brush to contact the jig surface conveyed through the chain claw track.

3. The crest weld outfeed mechanism capable of cleaning the jig tin dross according to claim 2, characterized in that, The steel brush comprises a brush head and a fixed rod, the brush head is fixed to one end of the fixed rod through a fixed sleeve, and the movable plate is provided with a fixed hole.

4. The crest weld outfeed mechanism capable of cleaning the jig tin dross according to claim 2, characterized in that, Two steel brushes are arranged side by side below the movable plate.

5. The peak soldering outfeed mechanism capable of cleaning the jig tin dross according to claim 2, characterized in that, A first spring sleeve is arranged on the first bolt.

6. The peak soldering outfeed mechanism capable of cleaning the jig tin dregs according to claim 2, characterized in that, The mounting plate is provided with a pad block protruding towards the swing plate, a connecting shaft is arranged between the swing plate and the pad block, the swing plate and the movable plate swing up and down around the connecting shaft, the mounting plate is provided with a connecting block, the connecting block is located in the swing direction of the swing plate, a second bolt is arranged between the connecting block and the swing plate, a second spring sleeve is arranged on the second bolt, and the second spring acts between the connecting block and the swing plate.

7. The peak soldering outfeed mechanism capable of cleaning the jig tin dregs according to claim 1, characterized in that, A fixed frame is arranged below the connecting conveying table, a supporting screw is arranged between the fixed frame and the connecting conveying table, and the height of the connecting conveying table is adjusted through the supporting screw.

8. The peak soldering outfeed mechanism capable of cleaning the jig tin dregs according to claim 7, characterized in that, A first heat dissipation fan, a second heat dissipation fan and a third heat dissipation fan are arranged above the connecting conveying table, the first heat dissipation fan, the second heat dissipation fan and the third heat dissipation fan blow airflows towards the connecting conveying table, the first heat dissipation fan is arranged on one side of the connecting conveying table close to the wave soldering machine through a first support, the second heat dissipation fan is arranged on the inclined section of the connecting conveying table through a second support, and the third heat dissipation fan is arranged on one side of the connecting conveying table close to the assembling table through a third support.

9. The peak soldering outfeed mechanism capable of cleaning the jig tin dregs according to claim 7, characterized in that, The tin slag collecting disc is divided into a first tin slag collecting disc and a second tin slag collecting disc, the first tin slag collecting disc is hung at the discharge port of the wave soldering machine and located directly below the cleaning assembly, and the second tin slag collecting disc is fixed to one side of the fixed frame and located directly below the connecting position of the connecting conveying table and the assembling table.

10. The peak soldering outfeed mechanism capable of cleaning the jig tin dross according to claim 1, characterized in that, The material blocking transfer table comprises a material receiving plate and a blocking strip, the material receiving plate is fixed to the electronic assembling table, the blocking strip is arranged along the edge of the material receiving plate, and is not arranged on the edge of the material receiving plate close to the connecting conveying table.

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