Die cavity for tinning copper wire

Abstract

The utility model discloses a die cavity for copper wire tinning, which relates to the technical field of copper wire tinning devices and comprises a groove body, a liquid adding box is arranged on one side of the groove body, and tin liquid in the liquid adding box is injected into the groove body through an automatic liquid adding mechanism. A cover plate is arranged above the groove body, a connecting column is arranged on one side of the cover plate, a connecting hole is formed in the top of the groove body, and the connecting column is matched with the connecting hole in an inserted mode. The liquid level sensor is used for sensing the liquid level of the tin liquid in the tank body, when the liquid level is sensed to be lower than the liquid level required by tin plating, the external PLC is used for controlling the liquid adding pump to start, the liquid adding pump pumps the tin liquid in the liquid adding box into the tank body, the liquid level of the tin liquid in the tank body reaches the required position, and automatic liquid adding into the tank body is achieved. Meanwhile, the cover plate is additionally arranged at the top of the tank body, and the opening in the top of the tank body is covered by the cover plate, so that the tank body is sealed, the loss of heat in the tank body is reduced, and the heat preservation effect of the tank body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of copper wire tinning devices, in particular to a die groove for copper wire tinning. Background Art

[0002] Tin is a non-toxic, silvery white metal with good welding, ductility and corrosion resistance. The tinning process is widely used in the automotive, electronic components, printed circuit boards and other industries. Generally, the workpiece to be plated is immersed in a tinning bath containing tin salt for tinning.

[0003] Tinned copper wire refers to copper wire with a thin layer of metal tin on the surface. Tinned copper wire is relatively soft and has good conductivity. Compared with bare copper wire, it has stronger corrosion resistance and oxidation resistance, which can greatly extend the service life of weak current cables.

[0004] Tinning copper wire requires a tinning bath, and the existing tinning bath is generally open, so that the heat inside the tinning bath is easily lost, which leads to poor insulation effect of the tinning bath, and heating the tinning bath consumes a lot of electricity. In addition, after the tinning bath has been used for a period of time, the tin liquid inside the tinning bath will be reduced by evaporation or consumption, and the reduction of tin liquid will also make the copper wire unable to be fully and evenly electroplated, resulting in incomplete surface electroplating, which reduces the quality of tinning of the copper wire. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a mold tank for tinning copper wire, comprising a tank body, a liquid refilling tank is arranged on one side of the tank body, and tin liquid is injected into the tank body and the liquid refilling tank;

[0006] The tin liquid in the liquid refilling tank is injected into the tank body through an automatic liquid adding mechanism;

[0007] A tin plating inlet is provided on one side of the length direction of the trough body, and a tin plating outlet is provided on the other side of the length direction of the trough body, and both the tin plating inlet and the tin plating outlet are higher than the liquid level of the tin liquid in the trough body; a pressure roller is provided inside the trough body along the length direction of the trough body, and the lowest point of the pressure roller is lower than the liquid level of the tin liquid in the trough body, a cover plate is provided above the trough body, a connecting column is provided on the side of the cover plate close to the trough body, a connecting hole is provided on the top of the trough body, the connecting column is plugged into the connecting hole, and a magnet is provided on the end of the connecting column away from the cover plate, and the magnet is adsorbed to the bottom of the connecting hole.

[0008] A further solution is that the automatic liquid adding mechanism includes a liquid level sensor and a liquid adding pump, the liquid level sensor is fixedly arranged on an inner wall of the tank body, and the liquid level sensor is used to detect the height of the tin liquid level in the tank body; the liquid outlet of the liquid replenishing tank is connected with the liquid inlet of the liquid adding pump through a pipeline, and the liquid outlet of the liquid adding pump is connected with the liquid inlet of the tank body through a pipeline; the signal output end of the liquid level sensor is electrically connected to the first signal input end of the external PLC controller, and the first signal output end of the PLC controller is electrically connected to the liquid adding pump.

[0009] A further solution is that a plug-in block is provided on one side of the cover plate close to the slot body, the plug-in block is plugged into and matched with the slot body, and the side wall of the plug-in block abuts against the inner side wall of the slot body.

[0010] A further solution is that a heat preservation pad is provided on one side of the cover plate close to the tank body, a boss which fits with the plug-in block is provided on the heat preservation pad, and the heat preservation pad contacts with the inner wall of the tank body.

[0011] A further solution is that a locking screw is provided on the cover plate, and the locking screw passes through the cover plate and is threadedly connected to the trough body.

[0012] A further solution is that an electric heating tube is provided inside the tank body, and the electric heating tube is arranged along the length direction of the tank body; a temperature sensor is provided inside the tank body, and the signal output end of the temperature sensor is electrically connected to the second signal input end of the PLC controller, and the second signal output end of the PLC controller is electrically connected to the electric heating tube.

[0013] Beneficial effects of the utility model:

[0014] The utility model arranges a liquid refilling tank and a liquid adding pump on one side of a tank body and arranges a liquid level sensor in the tank body, and senses the liquid level of tin liquid in the tank body through the liquid level sensor. When it is sensed that the liquid level is lower than the liquid level required for tin plating, the liquid adding pump is started by controlling an external PLC controller, and the liquid adding pump draws the tin liquid in the liquid refilling tank into the tank body, so that the liquid level of the tin liquid in the tank body reaches the required position, thereby realizing automatic liquid addition into the tank body.

[0015] The utility model adds a cover plate on the top of the trough body, covers the opening on the top of the trough body through the cover plate, thereby sealing the trough body, thereby reducing the loss of heat in the trough body and improving the thermal insulation effect of the trough body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a mold groove for tinning copper wire provided in an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the structure of the tank provided in the embodiment of the utility model;

[0018] Figure 3 An exploded view of a tank body provided in an embodiment of the utility model;

[0019] Figure 4 for Figure 3 The schematic diagram of the structure after the enlargement of A in the middle;

[0020] The attached drawings are marked as follows: 1-tank body; 2-liquid refilling tank; 10-tinning inlet; 11-tinning outlet; 12-pressure roller; 13-copper wire; 2-liquid refilling tank; 3-cover plate; 30-connecting column; 300-magnet; 31-connecting hole; 32-plug block; 33-insulation pad; 330-boss; 34-locking screw; 40-liquid filling pump; 5-electric heating tube. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] like Figure 1-4 As shown, an embodiment of the utility model discloses a mold slot for tinning copper wire, comprising a slot body 1, a liquid refilling tank 2 is arranged on one side of the slot body 1, and tin liquid is injected into the slot body 1 and the liquid refilling tank 2; the tin liquid in the liquid refilling tank 2 is injected into the interior of the slot body 1 through an automatic liquid adding mechanism; the automatic liquid adding mechanism comprises a liquid level sensor and a liquid adding pump 40, the liquid level sensor is fixedly arranged on an inner side wall of the slot body 1, and the liquid level sensor is used to detect the height of the liquid level of the tin liquid in the slot body 1; the liquid outlet of the liquid refilling tank 2 is connected with the liquid inlet of the liquid adding pump 40 through a pipeline, and the liquid outlet of the liquid adding pump 40 is connected with the liquid inlet of the slot body 1 through a pipeline; the signal output end of the liquid level sensor is electrically connected to the first signal input end of the external PLC controller, and the first signal output end of the PLC controller is electrically connected to the liquid adding pump 40.

[0023] The present embodiment can realize that when the liquid level sensor senses that the liquid level of the tin liquid in the tank is lower than the liquid level required for tin plating, the liquid level sensor sends a signal and transmits it to the PLC controller. After the PLC controller receives the signal, the PLC controller sends a signal to the liquid adding pump to start the liquid adding pump and put it in working mode. After the liquid adding pump is started, the tin liquid in the refilling tank can be pumped into the tank until the liquid level of the tin liquid in the tank rises to the required liquid level. After the liquid level sensor senses it, it sends a signal and transmits it to the PLC controller. After the PLC controller receives the signal, the PLC controller sends a signal to the liquid adding pump to stop the liquid adding pump and then stop pumping the tin liquid into the refilling tank. After the tank has been used for a period of time, when the liquid level sensor senses that the liquid level of the tin liquid in the tank is lower than the liquid level required for tin plating again, the above operation can be repeated to realize automatic filling of the tin liquid into the tank, thereby ensuring that the liquid level of the tin liquid in the tank is always maintained within the required range for tin plating of the copper wire. There is no need to manually add tin liquid, which reduces the workload of manual operation and ensures the effect of tinning the copper wire.

[0024] A tin plating inlet 10 is provided on one side of the trough body 1 in the length direction, and a tin plating outlet 11 is provided on the other side of the trough body 1 in the length direction. Both the tin plating inlet 10 and the tin plating outlet 11 are higher than the liquid level of the tin liquid in the trough body 1; a pressing roller 12 is provided inside the trough body 1 along the length direction of the trough body 1, and the lowest point of the pressing roller 12 is lower than the liquid level of the tin liquid in the trough body 1.

[0025] Through the above arrangement, the copper wire 13 of the present embodiment can be tinned by first entering the tank body from the tinning inlet, and the pressing roller squeezes the copper wire 13 to immerse the copper wire 13 in the tin liquid, so that the tin liquid adheres to the surface of the copper wire 13, and the copper wire 13 adhered to the tin liquid passes through the tinning outlet and leaves the tank body 1, thereby completing the tinning of the copper wire.

[0026] A cover plate 3 is provided above the trough body 1, and a connecting column 30 is provided on one side of the cover plate 3 close to the trough body 1, and the axial direction of the connecting column 30 is perpendicular to the surface of the cover plate 3; the number of the connecting columns 30 is set to four, and the four connecting columns 30 are respectively located at the four top corners of the cover plate 3, and four connecting holes 31 are provided on the top of the trough body 1, and each connecting column 30 corresponds to the position of each connecting hole 31 one by one, and the connecting column 30 and the connecting hole 31 are plugged into each other.

[0027] It should be noted that the diameter of the connecting column 30 in the present embodiment gradually decreases from top to bottom, so as to facilitate the guidance and positioning of the cover plate when installing the cover plate, thereby improving the position accuracy of the cover plate installation.

[0028] Through the above arrangement, this embodiment can place the cover plate on the top of the trough body, and the cover plate covers the opening on the top of the trough body, thereby sealing the trough body, thereby reducing the loss of heat in the trough body and improving the thermal insulation effect of the trough body.

[0029] In this embodiment, a magnet 300 is provided at one end of the connecting column 30 away from the cover plate 3, and the magnet 300 is magnetically adsorbed to the bottom of the connecting hole 31. After the cover plate 3 is installed on the slot body 1, the slot body 1 is made of a material that can be adsorbed by the magnet. The slot body in this embodiment is made of iron material, so the cover plate and the slot body can be tightly fitted under the action of the magnet.

[0030] In this embodiment, a plug-in block 32 is provided on one side of the cover plate 3 close to the tank body 1 . The plug-in block 32 is plugged into and matched with the tank body 1 , and the side wall of the plug-in block 32 abuts against the inner side wall of the tank body 1 .

[0031] In this embodiment, a heat preservation pad 33 is provided on one side of the cover plate 3 close to the tank body 1 , a boss 330 is provided on the heat preservation pad 33 to fit with the plug-in block 32 , and the heat preservation pad 33 abuts against the inner wall of the tank body 1 .

[0032] It should be noted that the thermal insulation pad in this embodiment is made of high-temperature resistant PI material, and the above-mentioned setting can achieve the thermal insulation pad and the plug-in block to fit together.

[0033] The above arrangement of this embodiment can achieve that the heat preservation pad is pressed against the inner wall of the tank body, so that the sealing effect between the tank body and the cover plate is better, and the heat preservation effect of the tank body is improved. At the same time, the heat preservation pad is in direct contact with the inside of the tank body, which reduces the possibility of heat transfer to the cover plate.

[0034] In this embodiment, the cover plate 3 is provided with a locking screw 34 , and the number of the locking screw 34 may be more than one, which may be determined according to actual needs. The locking screw 34 passes through the cover plate 3 and is threadedly connected to the tank body 1 .

[0035] Through the above arrangement, this embodiment can achieve that by tightening the locking screw, the locking screw squeezes the cover plate and the insulation pad so that the cover plate, the insulation pad and the trough body are tightly fitted together, thereby reducing the possibility of heat loss from the gap between the trough body, the insulation pad and the cover plate.

[0036] In this embodiment, an electric heating tube 5 is provided inside the tank body 1, and the electric heating tube 5 is arranged along the length direction of the tank body 1; a temperature sensor is provided inside the tank body 1, and the signal output end of the temperature sensor is electrically connected to the second signal input end of the PLC controller, and the second signal output end of the PLC controller is electrically connected to the electric heating tube 5.

[0037] The present embodiment can detect the temperature in the tank body through the above-mentioned setting through the temperature sensor. When the temperature in the tank body is lower than the normal working temperature of the tank body, the temperature sensor sends a signal to the PLC controller. After the PLC controller receives the signal, the PLC controller sends a signal to the electric heating tube to make the electric heating tube start working, and then the inside of the tank body is properly heated by the electric heating tube to compensate for the heat loss of the tank body. When the temperature sensor detects that the temperature in the tank body reaches the normal working temperature of the tank body, the temperature sensor sends a signal to the PLC controller again. After the PLC controller receives the signal, the PLC controller sends a signal to the electric heating tube to stop the electric heating tube, and then ensures that the temperature in the tank body is within the optimal working temperature range.

[0038] Finally, it should be noted that the above only describes in detail the specific embodiments of the utility model. However, the utility model is not limited to the specific embodiments described above. Equivalent modifications and substitutions made by technicians in this field to the utility model are also within the scope of the utility model. Therefore, equal changes and modifications made without departing from the spirit and scope of the utility model are all included in the scope of the utility model.

Claims

1. A mold trough for tinning copper wire, comprising a trough body (1), characterized in that: A liquid refilling tank (2) is provided on one side of the tank body (1), and tin liquid is injected into the tank body (1) and the liquid refilling tank (2); The tin liquid in the liquid replenishing tank (2) is injected into the interior of the tank body (1) through an automatic liquid adding mechanism; A tinning inlet (10) is provided on one side of the trough body (1) in the length direction, and a tinning outlet (11) is provided on the other side of the trough body (1) in the length direction, and both the tinning inlet (10) and the tinning outlet (11) are higher than the liquid level of tin liquid in the trough body (1); a pressing roller (12) is provided inside the trough body (1) along the length direction of the trough body (1), and the lowest point of the pressing roller (12) is lower than the liquid level of tin liquid in the trough body (1); a cover plate (3) is provided above the trough body (1), and a connecting column (30) is provided on a side of the cover plate (3) close to the trough body (1); a connecting hole (31) is provided on the top of the trough body (1), and the connecting column (30) is plugged into and matched with the connecting hole (31); a magnet (300) is provided on the end of the connecting column (30) away from the cover plate (3), and the magnet (300) is adsorbed on the bottom of the connecting hole (31).

2. The mold groove for tinning copper wire according to claim 1, characterized in that: The automatic liquid adding mechanism comprises a liquid level sensor and a liquid adding pump (40); the liquid level sensor is fixedly arranged on an inner side wall of the tank body (1); the liquid level sensor is used to detect the height of the tin liquid level in the tank body (1); the liquid outlet of the liquid replenishing tank (2) is connected to the liquid inlet of the liquid adding pump (40) through a pipeline, and the liquid outlet of the liquid adding pump (40) is connected to the liquid inlet of the tank body (1) through a pipeline; the signal output end of the liquid level sensor is electrically connected to the first signal input end of the external PLC controller, and the first signal output end of the PLC controller is electrically connected to the liquid adding pump (40).

3. The mold groove for tinning copper wire according to claim 1, characterized in that: A plug-in block (32) is provided on one side of the cover plate (3) close to the tank body (1); the plug-in block (32) is plugged into and matched with the tank body (1); and the side wall of the plug-in block (32) abuts against the inner side wall of the tank body (1).

4. The mold groove for tinning copper wire according to claim 3, characterized in that: A heat preservation pad (33) is provided on one side of the cover plate (3) close to the tank body (1), and a boss (330) is provided on the heat preservation pad (33) that fits the plug-in block (32), and the heat preservation pad (33) contacts the inner wall of the tank body (1).

5. The mold groove for tinning copper wire according to claim 1, characterized in that: The cover plate (3) is provided with a locking screw (34), and the locking screw (34) passes through the cover plate (3) and is threadedly connected to the tank body (1).

6. The mold groove for tinning copper wire according to claim 1, characterized in that: An electric heating tube (5) is provided inside the tank body (1), and the electric heating tube (5) is arranged along the length direction of the tank body (1); a temperature sensor is provided inside the tank body (1), and the signal output end of the temperature sensor is electrically connected to the second signal input end of the PLC controller, and the second signal output end of the PLC controller is electrically connected to the electric heating tube (5).

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