Hot galvanizing device

Abstract

The utility model provides a hot galvanizing device which comprises a bottom plate, a clamping assembly and a molten zinc pool, a plurality of telescopic mechanisms are fixedly arranged at the top of the bottom plate, guide blocks are vertically and upwards erected at the output ends of the telescopic mechanisms, a moving plate is arranged on the guide blocks in a sliding mode, and a moving assembly for driving the moving plate to move is arranged on the guide blocks. A first motor is fixedly arranged at the top of the moving plate, the output end of the first motor vertically and downwards penetrates through the moving plate and then is fixedly provided with a concave frame, a rotating shaft is rotatably arranged in a groove of the concave frame, a second motor for driving the rotating shaft to rotate is arranged on the side wall of the concave frame, the clamping assembly is fixedly connected with the rotating shaft, and the molten zinc pool is fixedly arranged at the top of the bottom plate. The problem that in the prior art, when a workpiece with a corner is subjected to hot dipping, due to the fact that liquidity is lacked between zinc liquid and the workpiece, part of dead corners of the workpiece cannot be plated with zinc is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-dip galvanizing, in particular to a hot-dip galvanizing device. Background Art

[0002] Hot-dip galvanizing is a surface treatment process. By immersing steel products in molten zinc liquid, a zinc layer is covered on their surfaces to achieve the purpose of anti-corrosion. The steel products after hot-dip galvanizing have the advantages of strong anti-corrosion, good durability and low maintenance cost. It is commonly used in fields such as power equipment (such as transmission towers and utility poles), transportation facilities (such as guardrails and lamp posts), building structures and agricultural equipment.

[0003] Chinese patent with the publication number CN215668164U discloses a rectangular tube hot-dip galvanizing device. By equidistantly arranging multiple groups of clamping components inside the mounting plate, the rectangular tube is fixed on the connecting plate through the clamping components. Then, the electric push rod drives the suction cup to move downwards to adsorb the connecting plate, and drives the connecting plate to move into the hot-dip tank for hot-dip operation. After hot-dip galvanizing, the rectangular tube is removed from the hot-dip tank and left to stand. Through this device, the rectangular tubes do not contact each other, improving the hot-dip performance and also avoiding scratching between them when standing the rectangular tubes. The inventor found that although the device makes the rectangular tubes not contact each other through the spaced clamping components, when hot-dip galvanizing some workpieces with corners, due to the presence of multiple workpieces between the mounting plates, the fluidity of the zinc liquid is affected, resulting in the inability to coat zinc on some corner positions of the workpieces. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a hot-dip galvanizing device, which solves the problem in the prior art that when hot-dip galvanizing workpieces with corners, due to the lack of fluidity between the zinc liquid and the workpieces, zinc cannot be coated on some dead corner positions of the workpieces.

[0005] According to an embodiment of the utility model, a hot-dip galvanizing device includes a bottom plate, a clamping component and a zinc liquid tank. A plurality of telescopic mechanisms are fixedly arranged on the top of the bottom plate. The output ends of the telescopic mechanisms are vertically upward provided with guide blocks. A moving plate is slidably arranged on the guide blocks. A moving component for driving the moving plate to move along its length direction is arranged on the guide blocks. A first motor is fixedly arranged on the top of the moving plate. The output end of the first motor vertically penetrates through the moving plate and is fixedly provided with a concave frame. A rotating shaft is rotatably arranged in the groove of the concave frame. A second motor for driving the rotating shaft to rotate is arranged on the side wall of the concave frame. The clamping component is fixedly connected with the rotating shaft through a connecting plate. The clamping component is used for clamping the workpiece to be galvanized. The zinc liquid tank is fixedly arranged on the top of the bottom plate.

[0006] Compared with the prior art, the utility model has the following beneficial effects: By adopting the cooperation of the telescopic mechanism and the moving mechanism, the moving plate moves horizontally and vertically, so that the clamping component connected to the moving plate can clamp the workpiece and immerse the workpiece into the zinc bath to hot-dip the workpiece with the zinc liquid in the zinc bath. After the workpiece is immersed in the zinc bath, the first motor is started to control the rotation of the concave frame to rotate the workpiece in the zinc bath, and the second motor is started to control the rotation of the rotating shaft to tilt the whole workpiece, thereby changing the relative flow state between the workpiece and the zinc liquid, making it easier for the zinc liquid to enter the complex areas and corners of the workpiece, realizing the continuity and integrity of the overall galvanizing of the workpiece, avoiding the situation that the dead corners of the workpiece cannot be galvanized, and also helping to discharge the bubbles attached to the surface of the workpiece, preventing the formation of holes and defects in the coating, and significantly improving the quality of hot-dip plating of the workpiece.

[0007] Further, the clamping component includes: a mounting plate, one side of the mounting plate is fixedly connected to the connecting plate, two clamping plates are slidably arranged on the side of the mounting plate away from the connecting plate, and a driving component for driving the two clamping plates to move towards or away from each other is further arranged on the mounting plate.

[0008] Further, the driving component includes: two vertical plates and a third motor. The two vertical plates are symmetrically arranged on one side of the clamping plate on the mounting plate. A bidirectional lead screw is rotatably arranged between the two vertical plates. The two ends of the bidirectional lead screw are respectively threadedly connected to the two clamping plates. The third motor is fixedly arranged on one of the vertical plates, and the output end of the third motor is fixedly connected to one end of the bidirectional lead screw.

[0009] Further, a limiting block is further included. Limiting blocks are arranged on the opposite sides of the two clamping plates. An inclined surface is arranged at one end of each limiting block away from the clamping plate.

[0010] Further, a floating block is further included. The floating block is floatingly arranged in the zinc bath. Pulling ropes are connected to both ends of the floating block, and a pulling component for driving the pulling ropes to pull the floating block is arranged on the zinc bath.

[0011] Further, the pulling component includes: a winding shaft. Mounting grooves are respectively opened on the opposite sides of the inner wall of the zinc bath. The winding shaft is rotatably arranged in each mounting groove. The two ends of the pulling rope are respectively wound on the two winding shafts. A winding component for driving the two winding shafts to rotate simultaneously is further arranged on the zinc bath.

[0012] Further, the winding component includes: a fourth motor. The fourth motor is fixedly arranged on the outer wall of the zinc bath. The output end of the fourth motor is fixedly connected to one of the winding shafts. Tooth discs are fixedly arranged at the ends of the two winding shafts away from the fourth motor after passing through the mounting grooves. A tooth chain is sleeved on the two tooth discs.

[0013] Further, the cross section of the floating block is an inverted T shape.

[0014] Further, the moving component includes: a ball screw. A chute is formed on the side wall of the guiding block. One end of the moving plate is slidably arranged in the chute. The ball screw is horizontally and rotatably arranged in the chute. The ball screw is threadedly connected to the moving plate. A fifth motor is fixedly arranged on the guiding block, and the output end of the fifth motor is fixedly connected to one end of the ball screw. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 It is a schematic installation diagram of the clamping component of an embodiment of the present utility model.

[0017] Figure 3 It is a side view of an embodiment of the present utility model.

[0018] Figure 4 It is a whole cross-sectional view of an embodiment of the present utility model.

[0019] In the above-mentioned drawings: 1, base plate; 2, telescopic mechanism; 3, guiding block; 4, moving plate; 5, first motor; 6, concave frame; 7, rotating shaft; 8, second motor; 9, connecting plate; 10, zinc liquid pool; 11, mounting plate; 12, clamping plate; 13, vertical plate; 14, third motor; 15, bidirectional lead screw; 16, limiting block; 17, floating block; 18, traction rope; 19, winding shaft; 20, fourth motor; 21, gear disc; 22, gear chain; 23, ball screw; 24, fifth motor. Detailed Embodiment

[0020] The technical solutions in the present utility model will be further described below with reference to the drawings and embodiments.

[0021] As Figure 1As shown in FIG. 4 , an embodiment of the utility model proposes a hot-dip galvanizing device, comprising a base plate 1, a clamping assembly and a zinc liquid pool 10. A plurality of telescopic mechanisms 2 are fixedly arranged on the top of the base plate 1. A guide block 3 is vertically mounted upward on the output end of the telescopic mechanism 2. A movable plate 4 is slidably arranged on the guide block 3. A movable assembly for driving the movable plate 4 to move along its length direction is arranged on the guide block 3. A first motor 5 is fixedly arranged on the top of the movable plate 4. A concave frame 6 is fixedly arranged after the output end of the first motor 5 passes vertically downward through the movable plate 4. A rotating shaft 7 is rotatably arranged in the groove of the concave frame 6. A second motor 8 for driving the rotating shaft 7 to rotate is arranged on the side wall of the concave frame 6. The clamping assembly is fixedly connected to the rotating shaft 7 through a connecting plate 9. The clamping assembly is used to clamp the workpiece to be galvanized. The zinc liquid pool 10 is fixedly arranged on the top of the base plate 1. The zinc liquid pool 10 is filled with molten zinc liquid. When the workpiece is galvanized, the moving component moves the moving plate 4 to one side, and then the workpiece to be galvanized is clamped by the clamping component, and the moving plate 4 is started again to move the moving plate 4 to the top of the zinc liquid pool 10. At this time, the telescopic mechanism 2 is started, and the telescopic mechanism 2 drives the guide block 3 and the moving plate 4 to move downward as a whole. In this embodiment, the telescopic mechanism 2 can be selected from the prior art, such as a cylinder or an electric push rod, and the moving plate 4 moves downward to drive the workpiece on the clamping component to immerse the workpiece on the clamping component into the zinc liquid pool 10, so that the workpiece on the clamping component reacts with the zinc liquid to achieve the galvanizing operation. After the galvanizing is completed, the telescopic mechanism 2 lifts the guide block 3 and the moving plate 4 to separate the workpiece from the zinc liquid pool 10, and the moving component drives the moving plate 4 to move to one side of the device again, so as to facilitate the removal of the galvanized workpiece. Due to the influence of various factors such as insufficient fluidity of the zinc liquid, uneven temperature, and excessive zinc slag, it is difficult to remove the workpiece with a complex shape or with bends. When galvanizing a workpiece with a corner, the zinc liquid may not be able to fully cover these areas, resulting in discontinuous coating or no zinc coating. Therefore, in the process of the clamping assembly clamping the workpiece for galvanizing in the zinc liquid pool 10, the first motor 5 is started, and the first motor 5 drives the concave frame 6 to rotate, and the concave frame 6 drives the clamping assembly connected thereto to rotate, so that the workpiece to be galvanized rotates, which is beneficial to the zinc liquid covering various positions of the workpiece. When galvanizing a workpiece with a complex shape or corner on the top of the workpiece, the second motor 8 is started, and the second motor 8 drives the rotating shaft 7 to rotate, so that the connecting plate 9 drives the clamping assembly to tilt, that is, the workpiece is tilted, and the movement of the moving plate 4 driven by the moving assembly and the rotation of the first motor 5 drive the rotation of the clamping assembly, so that the zinc liquid can flow better and cover various parts of the complex structure of the workpiece, thereby ensuring the uniformity and integrity of the coating on the workpiece during galvanizing, avoiding the occurrence of missed plating, and improving the galvanizing quality of the workpiece.

[0022] like Figure 1As shown in Fig. -4, further, the clamping assembly includes: a mounting plate 11, one side of the mounting plate 11 is fixedly connected to the connecting plate 9, two clamping plates 12 are slidably arranged on the side of the mounting plate 11 away from the connecting plate 9, and a driving assembly for driving the two clamping plates 12 to move towards or away from each other is further arranged on the mounting plate 11. When clamping a workpiece, place the workpiece between the two clamping plates 12, and then start the driving assembly. The driving assembly drives the two clamping plates 12 to approach each other, and finally the two clamping plates 12 clamp the workpiece, enabling the workpiece to follow the clamping assembly for various displacements and rotations.

[0023] As Figure 3 As shown in Fig. -4, further, the driving assembly includes: two vertical plates 13 and a third motor 14. The two vertical plates 13 are symmetrically arranged on one side of the clamping plate 12 on the mounting plate 11. A bidirectional lead screw 15 is rotatably arranged between the two vertical plates 13. The two ends of the bidirectional lead screw 15 are respectively threadedly connected to the two clamping plates 12. The third motor 14 is fixedly arranged on one of the vertical plates 13, and the output end of the third motor 14 is fixedly connected to one end of the bidirectional lead screw 15. When driving the two clamping plates 12 to approach or move away from each other to clamp or release the workpiece, start the third motor 14. The third motor 14 drives the bidirectional lead screw 15 to rotate. The rotation of the bidirectional lead screw 15 causes the two clamping plates 12 threadedly connected to its two ends to move towards or away from each other, thereby realizing the clamping and release of the workpiece.

[0024] As Figure 1 As shown in Fig. -4, further, a limiting block 16 is further included. Limiting blocks 16 are arranged on the opposite sides of the two clamping plates 12, and each limiting block 16 has an inclined surface at one end away from the clamping plate 12. Specifically, the cross-section of each limiting block 16 is a right trapezoid. When clamping the workpiece, the bidirectional lead screw 15 drives the two clamping plates 12 to approach each other, so that the inclined surface of the limiting block 16 first contacts the bottom of the workpiece, thereby lifting the workpiece. Finally, the two ends of the workpiece are placed on the two limiting blocks 16, which facilitates the clamping of the workpiece by the clamping plates 12 and makes the clamping of the workpiece by the clamping plates 12 more stable.

[0025] As Figure 1 、 2 、4, further, a floating block 17 is further included. The floating block 17 is floatingly arranged in the zinc liquid pool 10. Both ends of the floating block 17 are connected with a traction rope 18, and a pulling assembly for driving the traction rope 18 to pull the floating block 17 is arranged on the zinc liquid pool 10. In this embodiment, the floating block 17 is in a long strip shape. Before galvanizing the workpiece, first start the pulling assembly, so that the pulling assembly drives the traction rope 18 to pull the floating block 17 to move on the surface of the zinc liquid, thereby pushing the zinc slag or floating slag on the top surface of the zinc liquid pool 10 to one side of the zinc liquid pool 10, avoiding this part of the zinc slag or floating slag from covering the surface of the workpiece, and thus improving the hot-dip plating quality of the workpiece. Specifically, the density of the floating block 17 is lower than the density of zinc, and it can be made of materials such as graphite and ceramic materials.

[0026] As shown Figure 1 , 2 , as shown in FIG. 4, further, the pulling assembly includes: a winding shaft 19. Installation grooves are formed on opposite sides of the inner wall of the zinc bath 10, and the winding shaft 19 is rotatably arranged in each installation groove. Both ends of the towing rope 18 are wound around the two winding shafts 19 respectively. The zinc bath 10 is further provided with a convolution assembly for driving the two winding shafts 19 to rotate simultaneously. In this embodiment, both ends of the floating block 17 are fixedly connected with a towing rope 18. Both ends of each towing rope 18 are wound around the two winding shafts 19 respectively. By convolving and releasing the towing rope 18 through the convolution assembly, the towing rope 18 can pull the floating block 17 to move horizontally on the surface of the zinc liquid, so as to push the zinc dross or floating slag to one side of the zinc bath 10, so that when the workpiece is immersed in the zinc liquid, it will not contact the floating slag, ensuring the quality of the coating formed after hot-dip galvanizing the zinc liquid on the workpiece.

[0027] As shown Figure 1 -3, further, the convolution assembly includes: a fourth motor 20. The fourth motor 20 is fixedly arranged on the outer wall of the zinc bath 10. The output end of the fourth motor 20 is fixedly connected with one of the winding shafts 19. Both ends of the two winding shafts 19 far away from the fourth motor 20 pass through the installation groove and are fixedly provided with a toothed disc 21. A toothed chain 22 is sleeved on the two toothed discs 21. During use, the fourth motor 20 is started, and the fourth motor 20 drives one of the winding shafts 19 to rotate. This winding shaft 19 drives the other winding shaft 19 to rotate through the toothed disc 21 and the toothed chain 22. Thus, when one of the two winding shafts 19 convolves the towing rope 18, the other winding shaft 19 releases the towing rope 18, thereby realizing the horizontal movement of the floating block 17 on the surface of the zinc liquid, pushing the floating slag on the surface of the zinc liquid to one side of the zinc bath 10, making the surface of the zinc liquid keep pure and clean, which is beneficial to improving the hot-dip quality of the workpiece.

[0028] As shown Figure 4 , further, the cross-section of the floating block 17 is an inverted T shape. The floating block 17 adopts an inverted T-shaped structure, so that when the floating slag on the surface of the zinc liquid is pushed to one side of the zinc bath 10, part of the floating slag will not escape from the bottom of the floating block 17, making the floating block 17 cleaner for complex cleaning.

[0029] As shown Figure 1As shown in Fig. 2, further, the moving component includes: a ball screw 23. A chute is formed on the side wall of the guide block 3. One end of the moving plate 4 is slidably disposed in the chute. The ball screw 23 is horizontally and rotatably disposed in the chute. The ball screw 23 is threadedly connected to the moving plate 4. A fifth motor 24 is fixedly provided on the guide block 3. The output end of the fifth motor 24 is fixedly connected to one end of the ball screw 23. In this embodiment, four telescopic mechanisms 2 are provided at the four corners of the top of the bottom plate 1. The four telescopic mechanisms 2 are symmetrically arranged in pairs. One guide block 3 is provided on two telescopic mechanisms 2 on the same side. The moving plate 4 is slidably mounted on the two guide blocks 3. When driving the moving plate 4 to move, start the fifth motor 24. The fifth motor 24 drives the ball screw 23 to rotate, so that the ball screw 23 drives the moving plate 4 threadedly connected thereto to move along the length direction of the chute, thereby realizing the horizontal movement action of the moving plate 4. Similarly, the moving component can also be a combination of a motor, a gear and a rack. For example, the motor is fixed on the moving plate 4, a gear is provided at the output end of the motor, and a rack meshing with the gear is provided on the guide block 3, which can also realize the horizontal movement of the moving plate 4.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A hot dip galvanizing device, characterized in that: include: A bottom plate (1), a plurality of telescopic mechanisms (2) are fixedly arranged on the top of the bottom plate (1), a guide block (3) is vertically mounted upward on the output end of the telescopic mechanism (2), a moving plate (4) is slidably mounted on the guide block (3), a moving assembly for driving the moving plate (4) to move along its length direction is mounted on the guide block (3), a first motor (5) is fixedly arranged on the top of the moving plate (4), an output end of the first motor (5) vertically passes through the moving plate (4) downward and is fixedly provided with a concave frame (6), a rotating shaft (7) is rotatably arranged in a groove of the concave frame (6), and a second motor (8) for driving the rotating shaft (7) to rotate is mounted on the side wall of the concave frame (6); A clamping assembly, the clamping assembly is fixedly connected to the rotating shaft (7) via a connecting plate (9), and the clamping assembly is used to clamp a workpiece to be galvanized; The zinc liquid pool (10) is fixedly arranged on the top of the bottom plate (1).

2. A hot dip galvanizing device as claimed in claim 1, characterized in that: The clamping assembly comprises: a mounting plate (11), one side of the mounting plate (11) is fixedly connected to the connecting plate (9), two clamping plates (12) are slidably provided on the side of the mounting plate (11) away from the connecting plate (9), and a driving assembly is also provided on the mounting plate (11) for driving the two clamping plates (12) to move in a direction toward or away from each other.

3. A hot dip galvanizing device as claimed in claim 2, characterized in that: The driving assembly comprises: two vertical plates (13) and a third motor (14); the two vertical plates (13) are symmetrically arranged on one side of a clamping plate (12) on a mounting plate (11); a bidirectional screw rod (15) is rotatably arranged between the two vertical plates (13); two ends of the bidirectional screw rod (15) are respectively threadedly connected to the two clamping plates (12); the third motor (14) is fixedly arranged on one of the vertical plates (13); and the output end of the third motor (14) is fixedly connected to one end of the bidirectional screw rod (15).

4. A hot dip galvanizing device as claimed in claim 3, characterized in that: It also comprises a limiting block (16), and the limiting blocks (16) are arranged on opposite sides of the two clamping plates (12), and an end of each limiting block (16) away from the clamping plate (12) is provided with an inclined surface.

5. A hot dip galvanizing device as claimed in claim 1, characterized in that: It also includes a floating block (17) which is arranged to float in the zinc liquid pool (10), both ends of the floating block (17) are connected to a traction rope (18), and the zinc liquid pool (10) is provided with a driving traction rope (18) to pull a traction assembly of the floating block (17).

6. A hot dip galvanizing device as claimed in claim 5, characterized in that: The pulling assembly comprises: a reel (19), mounting grooves are provided on opposite sides of the inner wall of the zinc liquid pool (10), the reel (19) is rotatably provided in each mounting groove, the two ends of the traction rope (18) are respectively wound on the two reel shafts (19), and the zinc liquid pool (10) is also provided with a winding assembly for driving the two reel shafts (19) to rotate simultaneously.

7. A hot dip galvanizing device as claimed in claim 6, characterized in that The convolution assembly comprises: a fourth motor (20), the fourth motor (20) is fixedly arranged on the outer wall of the zinc liquid pool (10), the output end of the fourth motor (20) is fixedly connected to one of the winding shafts (19), and the ends of the two winding shafts (19) away from the fourth motor (20) are both passed through the installation groove and fixedly provided with a toothed disc (21), and the two toothed discs (21) are sleeved with a toothed chain (22).

8. A hot dip galvanizing device as claimed in claim 5, characterized in that: The cross section of the floating block (17) is an inverted T-shape.

9. A hot dip galvanizing device as claimed in claim 1, characterized in that The moving assembly comprises: a ball screw (23), a slide groove is provided on the side wall of the guide block (3), one end of the moving plate (4) is slidably arranged in the slide groove, the ball screw (23) is horizontally and rotatably arranged in the slide groove, the ball screw (23) is threadedly connected to the moving plate (4), a fifth motor (24) is fixedly provided on the guide block (3), and the output end of the fifth motor (24) is fixedly connected to one end of the ball screw (23).

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