A fully automatic aluminum bar two-end tinning production line

Abstract

The present invention discloses a full-automatic aluminum bar two-end tinning production line, comprising a conveyor chain, a plurality of cantilevers are connected to the conveyor chain, and a special rotating hanger for tinning the two ends of the aluminum bar is connected to the cantilever; a loading section, a first cleaning section, a pre-treatment section, a tinning section, a second cleaning section and a unloading section are sequentially arranged along the conveyor chain; the present invention improves the tinning process, and improves the coating bonding ability through the zinc dipping process; improves the stability of current parameters during electrotinning through the copper plating (copper plating) process, avoids leaking plating, and improves the uniformity of the tinned products; and realizes efficient control of the lifting, rotation and positioning of the aluminum bar through the special rotating hanger, thereby improving the production efficiency of the entire production line.

Description

Technical Field

[0001] The invention specifically relates to a full-automatic aluminum bar two-end tinning production line. Background Art

[0002] Aluminum is a very active amphoteric metal with strong self-passivation ability. Without proper activation, the coating will have poor bonding strength after electroplating and peeling will occur. Therefore, the tinning of aluminum bars needs to be completed through the process of zinc immersion, zinc stripping, zinc deposition, and electroplating. In the existing production, the process of zinc immersion, zinc stripping, zinc deposition, and electroplating also has defects. If pre-copper plating is not performed, the local current of the hanger will be too high during the electroplating of tin, causing the hanger head to break through the coating of the product, resulting in the problem of leakage plating.

[0003] In addition to the above problems, in the production of partial tinning of aluminum bars, tooling fixtures are also needed to assist in the implementation. The design of the aluminum bar tinning fixture is directly related to each process flow and ultimately affects the quality of tinning. In the prior art, the parts that do not need to be plated are blocked, and then the entire workpiece is placed in the plating solution. This process produces a huge waste of the plating solution, and the cleaning process is complicated and polluting, which increases energy consumption and wastewater treatment costs. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of the above prior art and propose a fully automatic aluminum bar two-end tinning production line, comprising a conveyor chain, a plurality of cantilevers are connected to the conveyor chain, and a special rotating hanger for tinning the two ends of the aluminum bar is connected to the cantilever; a loading section, a first cleaning section, a pre-treatment section, a tinning section, a second cleaning section and a unloading section are arranged in sequence along the conveyor chain;

[0005] The first cleaning section includes a chemical degreasing tank, a first spray water washing tank, an alkaline etching tank, a second spray water washing tank, a pickling tank, a first water washing tank, a third spray water washing tank,

[0006] The pre-treatment section includes a primary zinc immersion tank, a fourth spray water washing tank, a zinc stripping tank, a second water washing tank, a fifth spray water washing tank, a secondary zinc immersion tank, a sixth spray water washing tank, a pre-copper plating tank, a seventh spray water washing tank, a copper plating tank, an eighth spray water washing tank, an activation tank, a third water washing tank, and a ninth spray water washing tank, which are arranged in sequence;

[0007] The second cleaning section includes a fourth water washing tank, a tenth spray water washing tank, a neutralization tank, an eleventh spray water washing tank, a fifth water washing tank, and a hot water washing tank.

[0008] In order to better realize the automated production of tinning at both ends of aluminum bars, preferably, the special rotating hanger for tinning at both ends of aluminum bars comprises a frame, a lifting module, a rotating module and a positioning module, the frame is composed of two vertical columns and a plurality of horizontal connecting plates, and the columns are provided with vertical slide grooves;

[0009] The lifting module is arranged in front of the frame, and includes a lifting frame and four limit sliders connected to the two sides of the lifting frame. The rear end of the limit slider is provided with a sliding buckle matched with the slide slot, and the limit slider moves vertically relative to the column; a rotating motor is provided at the center of the lifting frame; the upper and lower sections of the lifting frame are provided with two symmetrical locking pin holes;

[0010] The rotating module is arranged in front of the lifting frame, including a rotating frame and two clamping units arranged at the upper and lower ends of the rotating frame, and the clamping unit includes a horizontally placed pressing plate and two quick clamps arranged at the diagonal positions of the pressing plate; a rotating shaft hole is arranged in the middle of the rotating frame, and the rotating shaft of the rotating motor is clamped in the rotating shaft hole;

[0011] The positioning modules are respectively arranged in the middle of two horizontal pressure plates, including a cross slot, a locking pin and a reset spring. The cross slot includes a through hole and a first groove and a second groove that are cross-shaped. The position of the through hole is opposite to the position of the locking pin hole on the lifting frame; the groove depth of the first groove is greater than that of the second groove; the locking pin includes a pin handle arranged at the tail end of the locking pin, a groove buckle arranged in the middle section of the locking pin and a reset baffle arranged at the front section of the locking pin; the locking pin is inserted into the through hole, and a reset spring is sleeved on the locking pin, one end of the reset spring abuts against the rear wall of the pressure plate, and the other end abuts against the front wall of the reset baffle.

[0012] Preferably, the number of slots in the loading section and the unloading section is 8 in total.

[0013] Preferably, the number of the chemical degreasing tank, the alkaline etching tank, the pickling tank, the primary zinc immersion tank, and the pre-copper plating tank are 2 each; and the number of the primary zinc immersion tank is 1.

[0014] Preferably, the first spray water washing tank, the second spray water washing tank, the third spray water washing tank, the fourth spray water washing tank, the fifth spray water washing tank, the sixth spray water washing tank, the seventh spray water washing tank, the ninth spray water washing tank, the tenth spray water washing tank, the eleventh spray water washing tank, the first water washing tank, the second water washing tank, the third water washing tank, the fourth water washing tank, and the fifth water washing tank are all one; the eighth spray water washing tank is two.

[0015] Preferably, the number of the copper plating tanks is 45; the number of the tin plating tanks is 10.

[0016] Preferably, there are two neutralization tanks and two hot water washing tanks.

[0017] Preferably, the conveyor chain and the loading section, the first cleaning section, the pre-treatment section, the tinning section, the second cleaning section, and the unloading section are all connected to a PLC controller and an exhaust gas treatment system.

[0018] Beneficial effects: The present invention improves the tin plating process. The zinc dipping process improves the bonding ability of the coating. The copper plating (copper plating) process improves the stability of the current parameters during electroplating, avoids leaking plating, and improves the uniformity of the tin-plated products. The special rotating hanger realizes efficient control of the lifting, rotation and positioning of the aluminum bar, thereby improving the production efficiency of the entire production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the internal structure of a fully automatic aluminum bar tinning production line;

[0020] Figure 2 It is a three-dimensional structural diagram of a special rotating hanger for tinning both ends of an aluminum bar;

[0021] Figure 3 yes Figure 2 Schematic diagram of the explosion structure;

[0022] Figure 4 yes Figure 3 A partial enlarged view of part B;

[0023] Figure 5 yes Figure 4 Schematic diagram of the structure after the locking pin is hidden;

[0024] Figure 6 is a three-dimensional schematic diagram of a locking pin;

[0025] Figure 7 yes Figure 2 A front view of

[0026] Figure 8 yes Figure 7 AA section view;

[0027] In the figure: 101, conveyor chain, 102, special rotating hanger for tinning both ends of aluminum bar, 201, loading section, 202, tinning section, 203, unloading section, 301, chemical degreasing tank, 302, first spray water washing tank, 303, alkaline etching tank, 304, second spray water washing tank, 305, pickling tank, 306, first washing tank, 307, third spray water washing tank, 401, primary zinc immersion tank, 402, fourth spray water washing tank, 403, zinc stripping tank, 404, second washing tank, 405, fifth spray water washing tank, 406, secondary zinc immersion tank, 407, sixth spray water washing tank, 408, pre-copper plating tank, 409, seventh spray water washing tank, 410, copper plating tank, 411, eighth spray water washing tank, 4 12. activation tank, 413. third water washing tank, 414. ninth spray water washing tank, 501. second washing section includes fourth water washing tank, 502. tenth spray water washing tank, 503. neutralization tank, 504. eleventh spray water washing tank, 505. fifth water washing tank, 506. hot water washing tank; 1. frame, 2. column, 3. horizontal connecting plate, 4. slide, 5. lifting frame, 6. limit slider, 7. rotating motor, 8. locking pin hole, 9. rotating frame, 10. pressing plate, 11. quick pressing pliers, 12. shaft hole, 13. shaft, 14. cross slot, 15. locking pin, 16. reset spring, 17. first groove, 18. second groove, 19. pin handle, 20. groove buckle, 21. reset baffle. DETAILED DESCRIPTION

[0028] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0029] like Figure 1-8 As shown, the purpose of the present invention is to solve the deficiencies of the above prior art, and proposes a fully automatic aluminum bar two-end tinning production line, including a conveyor chain 101, the conveyor chain 101 is connected to a plurality of cantilevers, and the cantilevers are connected to a special rotating hanger 102 for tinning the two ends of the aluminum bar; along the conveyor chain 101, there are sequentially arranged a loading section 201, a first cleaning section, a pre-treatment section, a tinning section 202, a second cleaning section and a unloading section 203;

[0030] The first cleaning section includes a chemical degreasing tank 301, a first spray water washing tank 302, an alkaline etching tank 303, a second spray water washing tank 304, a pickling tank 305, a first water washing tank 306, a third spray water washing tank 307,

[0031] The pre-treatment section includes a primary zinc immersion tank 401, a fourth spray water washing tank 402, a zinc stripping tank 403, a second water washing tank 404, a fifth spray water washing tank 405, a secondary zinc immersion tank 406, a sixth spray water washing tank 407, a pre-copper plating tank 408, a seventh spray water washing tank 409, a copper plating tank 410, an eighth spray water washing tank 411, an activation tank 412, a third water washing tank 413, and a ninth spray water washing tank 414.

[0032] The second cleaning section includes a fourth water washing tank 501 , a tenth spray water washing tank 502 , a neutralization tank 503 , an eleventh spray water washing tank 504 , a fifth water washing tank 505 , and a hot water washing tank 506 .

[0033] The number of slots in the feeding section and the unloading section is 8 in total.

[0034] The chemical degreasing tank, alkaline etching tank, pickling tank, primary zinc immersion tank and pre-copper plating tank are all 2; the primary zinc immersion tank is 1.

[0035] The first spray water washing trough, the second spray water washing trough, the third spray water washing trough, the fourth spray water washing trough, the fifth spray water washing trough, the sixth spray water washing trough, the seventh spray water washing trough, the ninth spray water washing trough, the tenth spray water washing trough, the eleventh spray water washing trough, the first water washing trough, the second water washing trough, the third water washing trough, the fourth water washing trough, and the fifth water washing trough are all one; the eighth spray water washing trough is two.

[0036] The number of the copper plating tanks is 45; the number of the tin plating tanks is 10.

[0037] There are two neutralization tanks and two hot water washing tanks.

[0038] The conveyor chain and the loading section, the first cleaning section, the pre-treatment section, the tinning section, the second cleaning section, and the unloading section are all connected to a PLC controller and an exhaust gas treatment system.

[0039] The special rotating hanger for tinning at both ends of the row includes a frame 1, a lifting module, a rotating module and a positioning module. The frame 1 is composed of two vertical columns 2 and a plurality of horizontal connecting plates 3. The columns 2 are each provided with a vertical slide 4.

[0040] The lifting module is arranged in front of the frame 1, and includes a lifting frame 5 and four limit sliders 6 connected to both sides of the lifting frame 5; a sliding buckle cooperating with the slide groove 4 is arranged at the rear end of the limit slider, and the limit slider 6 moves vertically relative to the column 2; a rotating motor 7 is arranged at the center of the lifting frame 5; two symmetrical locking pin holes 8 are arranged at the upper and lower sections of the lifting frame 5;

[0041] The rotating module is arranged in front of the lifting frame 5, including a rotating frame 9 and two clamping units arranged at the upper and lower ends of the rotating frame 9, and the clamping unit includes a horizontally placed pressing plate 10 and two quick clamps 11 arranged at the diagonal positions of the pressing plate; a rotating shaft hole 12 is arranged in the middle of the rotating frame, and a rotating shaft 13 of the rotating motor is clamped in the rotating shaft hole 12;

[0042] The positioning modules are respectively arranged in the middle of two horizontal pressure plates, including a cross slot 14, a locking pin 15 and a reset spring 16. The cross slot includes a through hole and a first groove 17 and a second groove 18 that are cross-shaped. The position of the through hole is opposite to the position of the locking pin hole 8 on the lifting frame; the groove depth d of the first groove 17 is greater than the groove depth D of the second groove 18; the locking pin includes a pin handle 19 arranged at the tail end of the locking pin, a groove buckle 20 arranged in the middle section of the locking pin and a reset baffle 21 arranged at the front section of the locking pin; the locking pin 15 is inserted into the locking pin hole, and a reset spring 16 is sleeved on the locking pin, one end of the reset spring 16 abuts against the rear wall of the pressure plate 10, and the other end abuts against the front wall of the reset baffle 21.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic aluminum bar two-end tinning production line, characterized in that: It includes a conveyor chain, a plurality of cantilevers are connected to the conveyor chain, and a special rotating hanger for tinning the two ends of the aluminum bar is connected to the cantilever; a loading section, a first cleaning section, a pre-treatment section, a tinning section, a second cleaning section and a unloading section are arranged in sequence along the conveyor chain; The first cleaning section includes a chemical degreasing tank, a first spray water washing tank, an alkaline etching tank, a second spray water washing tank, a pickling tank, a first water washing tank, and a third spray water washing tank, and the pre-treatment section includes a primary zinc immersion tank, a fourth spray water washing tank, a zinc stripping tank, a second water washing tank, a fifth spray water washing tank, a secondary zinc immersion tank, a sixth spray water washing tank, a pre-copper plating tank, a seventh spray water washing tank, a copper plating tank, an eighth spray water washing tank, an activation tank, a third water washing tank, and a ninth spray water washing tank. The second washing section includes a fourth water washing tank, a tenth spray water washing tank, a neutralization tank, an eleventh spray water washing tank, a fifth water washing tank, and a hot water washing tank; The special rotating hanger for tinning both ends of the aluminum bar comprises a frame, a lifting module, a rotating module and a positioning module. The frame is composed of two vertical columns and a plurality of horizontal connecting plates. The columns are provided with vertical slide grooves. The lifting module is arranged in front of the frame, and includes a lifting frame and four limit sliders connected to the two sides of the lifting frame. The rear end of the limit slider is provided with a sliding buckle matched with the slide slot, and the limit slider moves vertically relative to the column; a rotating motor is provided at the center of the lifting frame; the upper and lower sections of the lifting frame are provided with two symmetrical locking pin holes; The rotating module is arranged in front of the lifting frame, including a rotating frame and two clamping units arranged at the upper and lower ends of the rotating frame, and the clamping unit includes a horizontally placed pressing plate and two quick clamps arranged at the diagonal positions of the pressing plate; a rotating shaft hole is arranged in the middle of the rotating frame, and the rotating shaft of the rotating motor is clamped in the rotating shaft hole; The positioning modules are respectively arranged in the middle of two horizontally placed pressure plates, and include a cross slot, a lock pin and a reset spring. The cross slot includes a through hole and a first groove and a second groove that cross each other. The position of the through hole is opposite to the position of the lock pin hole on the lifting frame; the groove depth of the first groove is greater than that of the second groove; the lock pin includes a pin handle arranged at the tail end of the lock pin, a groove buckle arranged in the middle section of the lock pin and a reset baffle arranged in the front section of the lock pin; the lock pin is inserted into the through hole, and a reset spring is sleeved on the lock pin, and one end of the reset spring abuts against the rear wall of the pressure plate, and the other end abuts against the front wall of the reset baffle; The conveyor chain and the loading section, the first cleaning section, the pre-treatment section, the tinning section, the second cleaning section, and the unloading section are all connected to a PLC controller and an exhaust gas treatment system.

2. The fully automatic aluminum bar double-end tinning production line according to claim 1 is characterized in that: The number of slots in the feeding section and the unloading section is 8 in total.

3. The fully automatic aluminum bar double-end tinning production line according to claim 1 is characterized in that: The chemical degreasing tank, alkaline etching tank, pickling tank, primary zinc immersion tank and pre-copper plating tank are all 2 in number.

4. The fully automatic aluminum bar double-end tinning production line according to claim 1 is characterized in that: The first spray water washing trough, the second spray water washing trough, the third spray water washing trough, the fourth spray water washing trough, the fifth spray water washing trough, the sixth spray water washing trough, the seventh spray water washing trough, the ninth spray water washing trough, the tenth spray water washing trough, the eleventh spray water washing trough, the first water washing trough, the second water washing trough, the third water washing trough, the fourth water washing trough, and the fifth water washing trough are all one; the eighth spray water washing trough is two.

5. The fully automatic aluminum bar double-end tinning production line according to claim 1 is characterized in that: There are 45 copper plating tanks.

6. The fully automatic aluminum bar double-end tinning production line according to claim 1 is characterized in that: There are two neutralization tanks and two hot water washing tanks.

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