A device for cleaning copper slag in the tin bath of a tin spraying line

Abstract

The present invention discloses a device for cleaning copper slag in a solder pot of a solder spraying line, comprising: a solder pot with solder inside; a stirring device for stirring the solder in the solder pot; a copper discharging trough disposed outside the solder pot, the copper discharging trough being slidably connected to the solder pot, and a filter screen being provided on one side of the copper discharging trough facing the solder pot. Compared with the prior art, the present invention solves the problems of low efficiency and safety risks in removing sundries by the existing manual fishing method in the solder pot.

Description

Technical Field

[0001] The present invention relates to the technical field of impurity separation, and particularly to a device for cleaning copper slag in a tin bath of a solder spraying line. Background Art

[0002] In the solder spraying process of PCB surface treatment, copper slag foreign matters from the outside and on the PCB itself are easily carried into the tin bath during the solder spraying production process, resulting in a large amount of tin impurities in the tin bath. When spraying solder, the impurities will be sprayed on the PCB surface together, causing PCB pollution and even scrapping.

[0003] Therefore, in order to effectively ensure the solder spraying quality, it is necessary to effectively remove impurities such as tin slag and copper slag in the tin bath. Currently, the impurities are mainly removed by manual fishing. However, when manually fishing, the air knife of the solder spraying machine needs to be opened, making the tin in the tin bath exposed to the air. On the one hand, the temperature of the tin in the tin bath is high, reaching above 250°C, and manual fishing is prone to personal safety accidents and scalding the human body; on the other hand, the efficiency of removing impurities is low, affecting the production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for cleaning copper slag in a tin bath of a solder spraying line to solve the problems of low efficiency and safety risks in the existing manual fishing method for removing impurities in the tin bath.

[0005] To achieve the above purpose, the present invention adopts the following technical scheme: A device for cleaning copper slag in a tin bath of a solder spraying line, comprising:

[0006] A tin bath with tin material arranged inside;

[0007] A stirring device for stirring the tin material inside the tin bath;

[0008] A copper discharging trough arranged outside the tin bath, the copper discharging trough is slidably connected to the tin bath, a filter screen is arranged on the side of the copper discharging trough facing the tin bath, and a number of filter holes are arranged on the filter screen;

[0009] A filter hole adjusting member is further arranged on the inner wall of the copper discharging trough. The filter hole adjusting member is provided with a waist-shaped hole, and the filter hole adjusting member is fixedly installed on the inner wall of the copper discharging trough through a locking member. The locking member passes through the waist-shaped hole and is fixedly installed on the inner wall of the copper discharging trough. The filter hole adjusting member includes a number of parallel arranged shielding plates, one shielding plate corresponding to one filter hole. The shielding plate includes a number of parallel arranged shielding teeth, the shielding teeth are in a trapezoidal structure, and the width of the shielding teeth gradually decreases from the root to the end.

[0010] As a further description of the above technical scheme:

[0011] A driving device is arranged below the copper discharging trough, and the driving device is used to drive the copper discharging trough to move along the height direction of the tin bath.

[0012] As a further description of the above technical solution:

[0013] Driving devices are symmetrically arranged on one relative side of the tin bath.

[0014] As a further description of the above technical solution:

[0015] The stirring device includes a stirring shaft and a driving motor. The stirring shaft extends into the tin bath. Stirring blades are circumferentially arranged on the stirring shaft. The stirring shaft is fixedly installed at the output end of the driving motor.

[0016] As a further description of the above technical solution:

[0017] The bottom plate of the copper discharging tank is inclined.

[0018] As a further description of the above technical solution:

[0019] A guiding plate is arranged below the copper discharging tank. Guiding chutes are arranged on the guiding plate. Connecting blocks corresponding to the guiding chutes in position are arranged on the surface of the tin bath. The connecting blocks are slidably connected in the guiding chutes.

[0020] As a further description of the above technical solution:

[0021] The cross-section of the connecting block is in a "T" shape. The connecting block includes a connecting rod and an upper cover plate. The upper cover plate is arranged at the top of the connecting rod. The diameter of the upper cover plate is larger than the width of the guiding chute.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0023] 1. In the present invention, when the stirring device stirs the tin material stored in the tin bath, taking advantage of the characteristic that the specific gravity of the tin material is greater than that of sundries such as tin dross and copper dross, the lighter sundries such as tin dross and copper dross float up during the stirring process. And as the liquid level of the tin material rises under the stirring of the stirring device, the sundries floating on the tin material overflow together with the tin material and enter the copper discharging tank. After the copper discharging tank is full, the stirring device stops stirring, causing the copper discharging tank to rise. The filter screen on the side wall of the copper discharging tank exposes above the top plane of the tin bath. The tin material in the copper discharging tank flows back into the tin bath. The filter screen separates the sundries from the tin material, and the sundries remain in the copper discharging tank. With the stirring of the stirring device, the tin material is repeatedly filtered, effectively realizing the removal of sundries in the tin material.

[0024] 2. In the present invention, the bottom plate of the copper discharging tank is inclined, which is convenient for the tin material to flow towards the filter screen, improving the separation effect of the tin material from sundries such as tin dross and copper dross.

[0025] 3. In the present invention, due to the provision of the filter hole adjusting member, when the filter hole adjusting member horizontally adjusts its installation position through the waist-shaped hole, the shielding teeth have different shielding effects on the filter holes due to their different widths, resulting in different sizes of debris filtered by the filter holes. As a result, the filter net can flexibly adjust the filtering ability of the filter holes according to the number of filtering times, effectively improving the filtering effect of debris in the solder paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a three-dimensional view of a copper slag cleaning device for a solder spraying line Figure 1 .

[0028] Figure 2 is a three-dimensional view of a copper slag cleaning device for a solder spraying line Figure 2 .

[0029] Figure 3 is a three-dimensional view of a copper slag cleaning device for a solder spraying line Figure 3 .

[0030] Figure 4 is Figure 3 the partial enlarged view at A in

[0031] Figure 5 is a schematic structural view of a filter hole adjusting member in a copper slag cleaning device for a solder spraying line.

[0032] Figure 6 is Figure 5 the partial enlarged view at B in

[0033] Figure 7 is a schematic structural view of a flow guiding member in a copper slag cleaning device for a solder spraying line.

[0034] Figure 8 is Figure 7 the partial enlarged view at C in

[0035] Legend:

[0036] 1. Tin bath; 11. Connecting block; 111. Upper cover plate; 2. Stirring device; 21. Stirring shaft; 211. Stirring blades; 22. Driving motor; 3. Copper discharging tank; 31. Filter screen; 311. Filter holes; 32. Bottom plate; 33. Guide plate; 331. Guide chute; 4. Driving device; 5. Filter hole adjusting part; 51. Kidney-shaped hole; 52. Baffle plate; 521. Blocking teeth; 9. Flow guiding part. Detailed implementation mode

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] Embodiment 1

[0043] Please refer to Figures 1-6, the present invention provides a technical solution: a device for cleaning copper slag in a tin bath of a tin spraying line, comprising:

[0044] A tin bath 1, inside which there is tin material;

[0045] A stirring device 2, which is used to stir the tin material inside the tin bath 1;

[0046] A copper discharging trough 3, which is arranged outside the tin bath 1. The copper discharging trough 3 is slidably connected to the tin bath 1. On one side of the copper discharging trough 3 facing the tin bath 1, there is a filter screen 31, and a number of filter holes 311 are arranged on the filter screen 31;

[0047] On the inner wall of the copper discharging trough 3, there is also a filter hole adjusting member 5. On the filter hole adjusting member 5, there is a waist-shaped hole 51. The filter hole adjusting member 5 is fixedly installed on the inner wall of the copper discharging trough 3 through a locking member. The locking member passes through the waist-shaped hole 51 and is then fixedly installed on the inner wall of the copper discharging trough 3. The filter hole adjusting member 5 includes a number of parallelly arranged shielding plates 52. One shielding plate 52 corresponds to one filter hole 311. The shielding plate 52 includes a number of parallelly arranged shielding teeth 521. The shielding teeth 521 are in a trapezoidal structure, and the width of the shielding teeth 521 gradually decreases from the root to the end.

[0048] The setting of the filter hole adjusting member 5 enables the filter hole adjusting member 5 to horizontally adjust the installation position through the waist-shaped hole 51. Due to the different widths of the shielding teeth 521 themselves, the shielding effects on the filter holes 311 are different, so that the sizes of the sundries filtered by the filter holes 311 are different. Furthermore, the filter screen 31 can flexibly adjust the filtering capacity of the filter holes 311 according to different filtering times, effectively improving the filtering effect of sundries in the tin material.

[0049] For example, during the first filtration, the area of the filter hole 311 blocked by the filter hole adjusting member 5 is small or not blocked. As the number of filtrations increases, by adjusting the horizontal position of the filter hole adjusting member 5, the blocking area of the filter hole 311 by the shielding teeth 521 is increased, improving the filtering accuracy.

[0050] Below the copper discharging trough 3, there is a driving device 4, which is used to drive the copper discharging trough 3 to move along the height direction of the tin bath 1. The driving device 4 is used to drive the copper discharging trough 3 to move up and down, so as to facilitate the tin material in the copper discharging trough 3 to flow back into the tin bath. The driving device 4 can specifically use devices such as electric push rods or cylinders.

[0051] On one opposite side of the tin bath 1, there are symmetrically arranged driving devices 4, effectively ensuring the stable up and down movement of the copper discharging trough 3.

[0052] The stirring device 2 includes a stirring shaft 21 and a driving motor 22. The stirring shaft 21 extends into the tin bath 1. The stirring shaft 21 is provided with circumferentially arranged stirring blades 211. The stirring shaft 21 is fixedly installed at the output end of the driving motor 22. The driving motor 22 drives the stirring shaft 21 to rotate. The stirring shaft 21 stirs the tin material through the stirring blades 211, and the tin material in the tin bath 1 is thus stirred and the liquid level rises.

[0053] The bottom plate 32 of the copper discharging tank 3 is inclined, which is convenient for the tin material to flow towards the filter screen 31, improving the separation effect of the tin material from sundries such as tin dross and copper dross.

[0054] A guide plate 33 is arranged below the copper discharging tank 3. The guide plate 33 is provided with a guide chute 331. A connecting block 11 corresponding to the guide chute 331 in position is arranged on the surface of the tin bath 1. The connecting block 11 is slidably connected in the guide chute 331, making the up-and-down movement of the copper discharging tank 3 smooth. At the same time, the connecting block 11 forms a support for the copper discharging tank 3, restricting the position of the copper discharging tank 3 in the height direction.

[0055] The cross-section of the connecting block 11 is in a "T" shape. The connecting block 11 includes a connecting rod and an upper cover plate 111. The upper cover plate 111 is arranged at the top of the connecting rod, and the diameter of the upper cover plate 111 is greater than the width of the guide chute 331. The connecting block 11 can effectively lock the copper discharging tank 3 through the upper cover plate 111, preventing the horizontal position deviation of the copper discharging tank 3 after it is lifted upward and preventing the deformation of the copper discharging tank 3.

[0056] The top surface of the filter hole adjusting part 5 is an inclined diversion slope 53. The setting of the diversion slope 53 enables the tin material overflowing into the copper discharging tank 3 to flow down along the diversion slope 53, avoiding the impurities in the tin material being intercepted by the top surface of the filter hole adjusting part 5, resulting in the easy reflux of the impurities into the tin bath 1, and effectively ensuring the filtering effect of the impurities.

[0057] Working principle: When the stirring device 2 stirs the tin material stored in the tin bath 1, taking advantage of the characteristic that the specific gravity of the tin material is greater than that of sundries such as tin dross and copper dross, the lighter sundries such as tin dross and copper dross float up during the stirring process. And as the liquid level of the tin material rises under the stirring of the stirring device 2, the sundries floating on the tin material overflow and enter the copper discharging tank 3 together with the tin material. After the copper discharging tank 3 is full, the stirring device 2 stops stirring, causing the copper discharging tank 3 to rise. The filter screen 31 on the side wall of the copper discharging tank 3 exposes above the top plane of the tin bath 1. The tin material in the copper discharging tank 3 flows back to the tin bath, and the filter screen 31 separates the sundries from the tin material, and the sundries remain in the copper discharging tank 3. With the stirring of the stirring device, the tin material is repeatedly filtered, effectively realizing the removal of sundries in the tin material.

[0058] Embodiment 2

[0059] Please refer to Figures 1-8, others are the same as those in Embodiment 1, the difference lies in that: a flow guiding member 9 is arranged on the copper discharging groove 3. The flow guiding member 9 is of a tubular structure, and the cross section of the flow guiding member 9 is of an arc-shaped plate structure. The top end of the flow guiding member 9 extends towards the direction of the tin bath 1. The design of the flow guiding member 9 can prevent the tin material overflowing into the copper discharging groove 3 from overflowing out of the copper discharging groove 3 again, so that the tin material flows back into the copper discharging groove 3 along the inner arc surface of the flow guiding member 9.

[0060] The flow guiding member 9 is sleeved on the copper discharging groove 3, and a step surface matching the shape of the copper discharging groove 3 is arranged on the bottom surface of the flow guiding member 9, which is convenient for disassembling and installing the flow guiding member 9.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes an equivalent replacement or change, and should be covered by the protection scope of the present invention.

Claims

1. A cleaning device for copper slag in the tin bath of a tin spraying line, characterized in that, Comprising: A tin bath, inside which there is tin material; A stirring device for stirring the tin material inside the tin bath; A copper discharging trough, which is arranged outside the tin bath, the copper discharging trough is slidably connected to the tin bath, a filter screen is arranged on one side of the copper discharging trough facing the tin bath, and a number of filter holes are arranged on the filter screen; A filter hole adjusting member is further arranged on the inner wall of the copper discharging trough, a waist-shaped hole is arranged on the filter hole adjusting member, the filter hole adjusting member is fixedly installed on the inner wall of the copper discharging trough through a locking member, the locking member passes through the waist-shaped hole and is fixedly installed on the inner wall of the copper discharging trough, the filter hole adjusting member comprises a number of parallel arranged shielding plates, one shielding plate corresponds to one filter hole, the shielding plate comprises a number of parallel arranged shielding teeth, the shielding teeth are in a trapezoidal structure, and the width of the shielding teeth gradually decreases from the root to the end; A driving device is arranged below the copper discharging trough, and the driving device is used for driving the copper discharging trough to move along the height direction of the tin bath; The top surface of the filter hole adjusting member is an inclined diversion slope; When the filter hole adjusting member horizontally adjusts its installation position through the waist-shaped hole, due to the different widths of the shielding teeth themselves, the shielding effects on the filter holes are different, so that the sizes of the sundries filtered by the filter holes are different, and further the filter screen can adjust the filtering capacity of the filter holes according to the different filtering times.

2. The copper slag cleaning device for the tin bath of the hot air tin spraying line according to claim 1, wherein, Symmetrically arranged driving devices are arranged on one opposite side of the tin bath.

3. The copper slag cleaning device for the tin bath of the solder spraying line according to claim 1, wherein, The stirring device comprises a stirring shaft and a driving motor, the stirring shaft extends into the tin bath, circumferentially arranged stirring blades are arranged on the stirring shaft, and the stirring shaft is fixedly installed at the output end of the driving motor.

4. A copper slag cleaning device for a spray tin line tin bath according to claim 1, characterized in that, The bottom plate of the copper discharging trough is inclined.

5. A copper slag cleaning device for a hot air leveling line tin bath according to claim 1, characterized in that, A guide plate is arranged below the copper discharging trough, a guide chute is arranged on the guide plate, a connecting block corresponding to the guide chute in position is arranged on the surface of the tin bath, and the connecting block is slidably connected in the guide chute.

6. The copper slag cleaning device for the tin bath of the solder spraying line according to claim 5, characterized in that, The cross section of the connecting block is in a "T" shape, the connecting block comprises a connecting rod and an upper cover plate, the upper cover plate is arranged on the top of the connecting rod, and the diameter of the upper cover plate is larger than the width of the guide chute.

7. A copper slag cleaning device for a tin spraying line tin bath according to claim 1, characterized in that, A diversion member is arranged on the copper discharging trough, the diversion member is in a tubular structure, the cross section of the diversion member is in an arc-shaped plate structure, and the top end of the diversion member extends towards the tin bath direction.

8. A copper slag cleaning device for a tin spraying line tin bath according to claim 7, characterized in that, The diversion member is sleeved on the copper discharging trough, and a step surface matching the copper discharging trough in shape is arranged on the bottom surface of the diversion member.

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