Fastener pickling device

Abstract

The utility model discloses a fastener pickling device which comprises a machine frame, a negative pressure box and a pickling box are installed on the machine frame, the negative pressure box and the pickling box are communicated through a communicating pipe, and pickling solutions are arranged in the negative pressure box and the pickling box. Through cooperative arrangement of the pressure plate and the communicating pipe, after a large amount of waste gas and acid gas volatilized by the pressure plate are generated in the pickling box, the pressure plate moves upwards to generate negative pressure, so that the gas can be discharged from the communicating pipe, and after pickling is completed every time, the pressure plate moves downwards to press the pickling liquid into the pickling box for material supplementing; therefore, the practicability of the device is improved; through cooperative arrangement of a rotating shaft and a driving gear, the driving gear on the bearing frame can drive the driving shaft to drive a fastener in the bearing frame to rotate under meshing driving of a small gear on the rotating shaft, so that the pickling effects of different positions of the surface of the fastener are the same, the pickling solution is stirred through a stirring rod, and the pickling effect is improved. And the surface pickling effect of the fastener is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fastener pickling, in particular to a fastener pickling device. Background Art

[0002] Metal products such as fasteners will have black or yellow oxide scale during processing. In order to improve the appearance and corrosion resistance of metal products, the processed metal products must be pickled and passivated to remove the oxide scale produced by welding and high-temperature processing, making it silvery and shiny, and forming an oxide film with chromium as the main substance on the surface after treatment, which will no longer produce secondary oxygen corrosion.

[0003] During pickling, the temperature of the pickling solution will rise sharply, causing an increase in the amount of acidic gas volatilized from the pickling solution itself, thereby increasing the consumption of the pickling solution.

[0004] The pickling device in the prior art often discharges and treats the waste gas generated during pickling together with the acidic gas volatilized by the pickling liquid after heating, thereby causing a large amount of pickling liquid to be wasted; and the existing pickling device often places the workpiece in a receiving frame for pickling, and the pickling effect is poor where the workpiece contacts the receiving frame. Utility Model Content

[0005] Based on this, it is necessary to provide a fastener pickling device to address the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a fastener pickling device, including a frame, a negative pressure box and a pickling box are installed on the frame, the negative pressure box and the pickling box are connected by a connecting pipe, the negative pressure box and the pickling box both contain pickling liquid, the negative pressure box is provided with a liquid inlet pipe and an exhaust pipe, a pressure plate is connected with a sliding seal in the negative pressure box, a linear actuator is installed on the negative pressure box, and the output end of the linear actuator is connected to the pressure plate; a rotating shaft is rotatably connected to the pickling box, a plurality of stirring rods are installed on the rotating shaft, a small gear is installed on the rotating shaft, a large gear is rotatably connected in the pickling box, and the small gear is meshed with the large gear, and also includes a box cover, a receiving frame is provided at the bottom of the box cover, a plurality of driving shafts and fixed shafts are rotatably connected at the bottom of the receiving frame, the driving shaft and the fixed shaft are arranged at intervals, a driving gear is installed on the driving shaft, the driving gears are meshed in pairs, the driving gears are matched with the large gear, a rotating drive device is installed on the frame, and the output end of the rotating drive device is drivingly connected with the rotating shaft.

[0007] Preferably, a second linear actuator is mounted on the frame, and an output end of the second linear actuator is connected to the box cover.

[0008] Preferably, a plurality of telescopic support rods are installed on the frame, and the plurality of telescopic support rods are evenly distributed around the second linear actuator.

[0009] Preferably, the pickling box is provided with an annular groove, which is matched with the bottom edge of the box cover.

[0010] Preferably, a plurality of J-shaped blocks are installed at the bottom of the box cover, and a plurality of U-shaped blocks are installed at the receiving frame, and the J-shaped blocks correspond to the U-shaped blocks one by one.

[0011] Preferably, a constant pressure port is provided at the top of the negative pressure box.

[0012] Compared with the prior art, this technical solution has at least one of the following beneficial effects:

[0013] Through the coordinated arrangement of the pressure plate and the connecting pipe, after a large amount of waste gas and self-volatile acidic gas are generated in the pickling box, the pressure plate moves upward to generate negative pressure, so that the gas can be discharged from the connecting pipe, and after each pickling is completed, the pressure plate moves downward to press the pickling fluid into the pickling box for feeding, thereby improving the practicality of the device;

[0014] By cooperating with the rotating shaft and the driving gear, the driving gear on the receiving frame can be driven by the meshing of the small gear on the rotating shaft, so that the driving shaft drives the fastener in the receiving frame to rotate, thereby making the pickling effect of different places on the surface of the fastener the same, and the pickling liquid is stirred by the stirring rod to further improve the pickling effect of the fastener surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front cross-sectional view of an embodiment of the utility model;

[0016] Figure 2 A partial top sectional view of an embodiment of the utility model;

[0017] Figure 3 A top cross-sectional view of a receiving frame according to an embodiment of the utility model;

[0018] Figure 4 A three-dimensional diagram of a receiving frame and a J-shaped block according to an embodiment of the utility model;

[0019] In the figure, 1, frame; 2, negative pressure box; 3, pickling box; 4, connecting pipe; 5, pickling liquid; 6, liquid inlet pipe; 7, exhaust pipe; 8, pressure plate; 9, linear actuator; 10, rotating shaft; 11, stirring rod; 12, small gear; 13, large gear; 14, box cover; 15, receiving frame; 16, driving shaft; 17, fixed shaft; 18, driving gear; 19, rotating drive device; 20, linear actuator II; 21, telescopic support rod; 22, annular groove; 23, J-shaped block; 24, U-shaped block; 25, constant pressure port. DETAILED DESCRIPTION

[0020] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following will provide a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0021] Please refer to Figures 1 to 4 , the embodiment of the present application provides a pickling device for fasteners. This device is applicable to longer types of fasteners such as bolts, screws, and nuts, and includes a frame 1. A negative pressure box 2 and a pickling box 3 are installed on the frame 1. The negative pressure box 2 and the pickling box 3 are connected by a communication pipe 4. The communication pipe 4 should be in a "J" shape, and the highest point is higher than the liquid level of the pickling solution 5 in the negative pressure box 2. There is pickling solution 5 in both the negative pressure box 2 and the pickling box 3. An inlet pipe 6 and an exhaust pipe 7 are provided on the negative pressure box 2. Both the inlet pipe 6 and the exhaust pipe 7 are higher than the liquid level of the pickling solution 5, and the exhaust pipe 7 is closer to the liquid level of the pickling solution 5, so that when the pressure plate 8 moves downward again, the waste gas can be discharged more thoroughly from the exhaust pipe 7. The input end of the inlet pipe 6 should be connected to the pickling solution source, and the exhaust pipe 7 should be connected to the waste gas treatment box. Neither of them can freely allow gas and pickling solution 5 to enter and exit. A pressure plate 8 is slidably and sealingly connected in the negative pressure box 2. A linear actuator 9 is installed on the negative pressure box 2. The linear actuator 9 can be an electric cylinder, and the output end of the linear actuator 9 is connected to the pressure plate 8. A rotating shaft 10 is rotatably connected to the pickling box 3. A plurality of stirring rods 11 are installed on the rotating shaft 10. A small gear 12 is installed on the rotating shaft 10. A large gear 13 is rotatably connected in the pickling box 3. The small gear 12 is meshed with the large gear 13. It also includes a box cover 14. A receiving frame 15 is provided at the bottom of the box cover 14. A plurality of drive shafts 16 and fixed shafts 17 are rotatably connected to the bottom of the receiving frame 15. The drive shafts 16 and the fixed shafts 17 are arranged at intervals. A drive gear 18 is installed on the drive shaft 16. The drive gears 18 are all meshed with each other in pairs. The drive gear 18 is cooperatively arranged with the large gear 13. A rotation drive device 19 is installed on the frame 1. The rotation drive device 19 can be a motor, and the output end of the rotation drive device 19 is drivingly connected to the rotating shaft 10.

[0022] In this embodiment, after the receiving frame 15 with the fasteners is installed on the box cover 14, the box cover 14 is moved down so that the driving gear 18 on the receiving frame 15 can mesh with the large gear 13 in the pickling box 3. After the receiving frame 15 is placed, the box cover 14 and the top of the pickling box 3 should be sealed. Then, the rotating shaft 10 is driven by the rotating drive device 19 to rotate, so that the stirring rod 11 can stir the pickling liquid 5. When rotating, the small gear 12 on the rotating shaft 10 drives the large gear 13 to rotate, thereby driving a plurality of driving gears 18 meshing in pairs on the receiving frame 15 to rotate, so that the fixings carried by the driving shaft 16 and the fixing shaft 17 can rotate, and finally the pickling effect of the fasteners is improved; when a large amount of waste gas and acid gas are generated during pickling, The pressure plate 8 sliding in the negative pressure box 2 is driven upward by the linear drive 9. The pressure plate 8 generates negative pressure in the negative pressure box 2 during the upward movement, thereby extracting the gas in the pickling box 3. The acidic gas can be integrated back into the pickling liquid 5 again when entering the pickling liquid 5 with a lower temperature, and the waste gas is input into the waste gas treatment box through the exhaust pipe 7 for treatment; while the waste gas is discharged, the pickling liquid 5 is input through the liquid inlet pipe 6 to balance the pressure in the negative pressure box 2. Finally, when each pickling is completed, the box cover 14 is opened, and the pressure plate 8 moves down again, and the pickling liquid 5 in the negative pressure box 2 is pressed into the pickling box 3 by pressure, so as to supplement the pickling liquid 5; the drive shaft 16 and the fixed shaft 17 are arranged at intervals, so as to avoid the possible extrusion damage to the fasteners caused by the two drive shafts 16 when they are arranged continuously.

[0023] In some embodiments, in order to facilitate the automatic driving of the box cover 14 to move up and down, a linear actuator 20 is installed on the frame 1. The linear actuator 20 can be an electric cylinder, and the output end of the linear actuator 20 is connected to the box cover 14.

[0024] In some embodiments, in order to protect the linear actuator 20 , a plurality of telescopic support rods 21 are installed on the frame 1 , and the plurality of telescopic support rods 21 are evenly distributed around the linear actuator 20 .

[0025] In some embodiments, in order to prevent the waste gas in the pickling box 3 from overflowing, an annular groove 22 is provided on the pickling box 3, and the annular groove 22 is arranged in cooperation with the bottom edge of the box cover 14. When the fasteners in the receiving frame 15 are not contacted with the pickling liquid 5 for pickling, the bottom of the box cover 14 has been inserted into the annular groove 22, and then the bottom edge of the box cover 14 moves down in the annular groove 22, and the receiving frame 15 sinks into the pickling liquid 5. The bottom edge of the box cover 14 and the annular groove 22 are in a sealed sliding connection relationship.

[0026] In some embodiments, in order to facilitate the installation of the receiving frame 15 on the box cover 14 so that it can move downward with the box cover 14, a plurality of J-shaped blocks 23 are installed at the bottom of the box cover 14, and a plurality of U-shaped blocks 24 are installed at the receiving frame 15, and the J-shaped blocks 23 correspond to the U-shaped blocks 24 one by one. The U-shaped blocks 24 are in an inverted state, so that the J-shaped blocks 23 can be stuck to the inverted U-shaped blocks 24.

[0027] In some embodiments, in order to facilitate the discharge of the increased air pressure between the pressure plate 8 and the top of the negative pressure box 2 when the pressure plate 8 moves upward, a constant pressure port 25 is provided at the top of the negative pressure box 2.

[0028] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A fastener pickling device, comprising a frame (1), on which a negative pressure box (2) and a pickling box (3) are mounted, characterized in that: The negative pressure box (2) and the pickling box (3) are connected via a connecting pipe (4). Pickling liquid (5) is contained in both the negative pressure box (2) and the pickling box (3). The negative pressure box (2) is provided with a liquid inlet pipe (6) and an exhaust pipe (7). A pressure plate (8) is slidably sealed in the negative pressure box (2). A linear actuator (9) is installed on the negative pressure box (2). The output end of the linear actuator (9) is connected to the pressure plate (8). A rotating shaft (10) is rotatably connected to the pickling box (3). A plurality of stirring rods (11) are installed on the rotating shaft (10). A small gear (12) is installed on the rotating shaft (10). A large gear (12) is rotatably connected to the pickling box (3). (13), the small gear (12) is meshedly connected with the large gear (13), and also includes a box cover (14), a receiving frame (15) is provided at the bottom of the box cover (14), and a plurality of driving shafts (16) and fixed shafts (17) are rotatably connected at the bottom of the receiving frame (15), the driving shafts (16) and the fixed shafts (17) are arranged at intervals, and a driving gear (18) is installed on the driving shaft (16), and the driving gear (18) is arranged in coordination with the large gear (13), and the driving gears (18) are meshed with each other in pairs, and a rotating driving device (19) is installed on the frame (1), and the output end of the rotating driving device (19) is drivingly connected to the rotating shaft (10).

2. The fastener pickling device according to claim 1, characterized in that: A second linear actuator (20) is mounted on the frame (1), and an output end of the second linear actuator (20) is connected to the box cover (14).

3. The fastener pickling device according to claim 2, characterized in that: A plurality of telescopic support rods (21) are mounted on the frame (1), and the plurality of telescopic support rods (21) are evenly distributed around the second linear actuator (20).

4. The fastener pickling device according to claim 1, characterized in that: The pickling box (3) is provided with an annular groove (22), and the annular groove (22) is arranged in cooperation with the bottom edge of the box cover (14).

5. The fastener pickling device according to claim 1, characterized in that: A plurality of J-shaped blocks (23) are installed at the bottom of the box cover (14), and a plurality of U-shaped blocks (24) are installed on the receiving frame (15), wherein the J-shaped blocks (23) correspond to the U-shaped blocks (24) one by one.

6. The fastener pickling device according to claim 1, characterized in that: The top of the negative pressure box (2) is provided with a constant pressure port (25).

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