Transfer device for workpiece pickling

Abstract

The utility model provides a transfer device for workpiece pickling, which belongs to the technical field of workpiece pickling, and comprises two parallel guide rail parts, the guide rail parts are mounted on a frame cross beam above a pickling seal box, moving mechanisms are respectively arranged on the two guide rail parts, the moving mechanisms can move along the tracks of the guide rail parts, and the moving mechanisms can move along the tracks of the pickling seal box. The two moving mechanisms are connected into a whole through a fixed beam; the two ends of the fixed beam are connected with the moving mechanisms respectively, a lifting mechanism is arranged in the middle of the fixed beam, and the lifting mechanism is connected with a fixed shaft; the top end of the fixing shaft is connected with the lifting mechanism, the bottom end of the fixing shaft is connected with a fixing frame, and the fixing frame is connected with a pickling basket. By means of the double-servo independently-driven moving mechanism, the lifting mechanism of the ball screw pair and the quick-release connecting structure, high-precision synchronous transfer, corrosion prevention and universal adaptation of workpieces are achieved, efficiency and stability are improved, and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of workpiece pickling technology, and in particular to a transfer device for workpiece pickling. Background Technology

[0002] In the field of metal surface treatment, pickling is a key process for removing oxide scale, rust, and impurities from workpiece surfaces, and it is widely used in the processing of steel pipes, mechanical parts, and other industries. With the increasing level of industrial automation, the efficient transfer of workpieces between pickling tanks, cleaning tanks, neutralization tanks, and other processes has become an important link in ensuring the continuous operation of the production line.

[0003] In the prior art, Chinese Patent No. CN119352042A discloses an automatic pickling line lifting rack for pickled steel pipes, including a moving mechanism, a lifting mechanism, and a cleaning mechanism, both of which are mounted on the moving mechanism. The moving mechanism adjusts the positions of the lifting and cleaning mechanisms, the lifting mechanism raises the pipe to a higher position, and the cleaning mechanism cleans the pickling solution from the steel pipe. The moving mechanism adjusts the position of the lifting mechanism, which then extends into the pickling tank to retrieve the steel pipe. The cleaning mechanism, in conjunction with the lifting mechanism, then drains the pickling solution from the steel pipe. The moving mechanism then adjusts the position of the lifting mechanism again, and the lifting mechanism lowers and resets, placing the steel pipe in the designated position.

[0004] While existing technologies have improved transfer efficiency to some extent, the following shortcomings still exist in practical use: First, the horizontal moving mechanism (X-axis) uses a single-motor driven dual-screw synchronous scheme, transmitting power through a gear and rack or screw-nut pair. This single-power-source structure is prone to accumulating synchronization errors due to uneven loads and mechanical wear differences on both sides during long-distance operation or heavy-load conditions, leading to decreased positioning accuracy and even safety issues such as workpiece collisions and falls. Especially in large-scale pickling production lines, where the distance between pickling tanks is typically several meters, the response speed and torque output capacity of a single-motor drive are limited, making it difficult to meet the demands of high-speed, high-frequency transfer. Second, the vertical lifting mechanism (Z-axis) uses a gear and rack meshing transmission. This structure results in a relatively large distance between the vertical lifting mechanism and the pickling tank. Although some components are rubber-coated or have surface anti-corrosion treatment, the vertical lifting mechanism is still susceptible to the effects of the pickling tank, significantly shortening its service life, leading to high equipment maintenance frequency, and increasing production costs. Third, the end effector (such as the gripping rod) adopts a mechanical rotating structure, which mainly adjusts the gripping angle through bevel gear transmission and manually fixes the height of the guide column through limit bolts. Not only is the structure complex, but it is also only suitable for gripping cylindrical steel pipes and is difficult to apply to the transfer of irregularly shaped workpieces or tool baskets, thus limiting its applicability. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies, such as uneven load on both sides, high equipment maintenance frequency, and limited applicability, and to provide a transfer device for pickling workpieces.

[0006] This utility model is achieved through the following technical solution: a transfer device for pickling workpieces includes two parallel guide rails mounted on a frame beam above the pickling sealing box. Each of the two guide rails is equipped with a moving mechanism, which can move along the trajectory of the guide rails. The two moving mechanisms are connected as one unit by a fixed beam. Both ends of the fixed beam are connected to the moving mechanisms, and a lifting mechanism is provided in the middle of the fixed beam. The lifting mechanism is connected to a fixed shaft. The top end of the fixed shaft is connected to the lifting mechanism, and the bottom end of the fixed shaft is connected to a fixed frame. The fixed frame is connected to a pickling basket. The lifting mechanism, through the fixed shaft, can lift the fixed frame and the pickling basket out of or lower them into the pickling sealing box.

[0007] This transfer device features a dual-guide rail and dual-moving mechanism design, which better maintains synchronization under long-distance operation and heavy-load conditions. This reduces synchronization errors caused by uneven load and differences in mechanical wear, thereby improving positioning accuracy and preventing safety issues such as workpiece collisions and drops, thus enhancing the stability and safety of the transfer process. Simultaneously, the connection between the lifting mechanism 5 and the pickling basket 12 makes the lifting operation of the workpiece more stable and reliable, ensuring the smooth progress of the pickling process.

[0008] A further improvement of this utility model is that the moving mechanism includes a moving plate and a servo motor. The moving plate is mounted on the guide rail and is connected to the end of the fixed beam. The servo motor is mounted on the moving plate, and the output shaft of the servo motor rotates through the moving plate and is connected to a gear located on one side of the guide rail. The gear meshes with a rack parallel to the guide rail, and the rack is mounted on the frame crossbeam, with the length of the rack corresponding to the guide rail.

[0009] A further improvement of this utility model is that the guide rail section includes two parallel linear guide rails, a slider A is slidably disposed on the linear guide rails, a movable plate is connected to the slider A, and a gear and a rack are located between the two linear guide rails; the rack is close to one of the linear guide rails, and the space between the rack and the other linear guide rail forms the arrangement space for the gear.

[0010] A further improvement of this utility model is that limit sensors that cooperate with the moving mechanism are respectively provided at both ends of the guide rail. The limit sensors are installed on the frame beam between the two linear guide rails, and the limit sensors are electrically connected to the servo motor of the moving mechanism.

[0011] A further improvement of this utility model is that the lifting mechanism includes a support plate and a ball screw pair. The top end of the support plate is connected to a fixed beam, and the ball screw pair is installed on one side of the support plate. A drive motor for driving the ball screw pair is provided on the support plate, and the output shaft of the drive motor is connected to the lead screw of the ball screw pair through a coupling. A lifting plate is connected to the nut of the ball screw pair. The side of the lifting plate close to the ball screw pair is connected to the nut, and a support frame is provided on the side of the lifting plate away from the ball screw pair. The bottom end of the support frame is connected to the top end of the fixed shaft.

[0012] A further improvement of this utility model is that the ball screw pair is provided with limiting linear guides mounted on the support plate on both sides, and a slider B is slidably arranged on the limiting linear guides, and the slider B is connected to the corresponding side of the lifting plate.

[0013] A further improvement of this utility model is that the fixed frame is provided with hanging shafts at both ends, and the pickling basket is provided with hooks at both ends that cooperate with the hanging shafts. The fixed frame and the pickling basket are detachably connected by the hanging shafts and hooks.

[0014] A further improvement of this utility model is that a wire groove parallel to the guide rail is provided on one side of the guide rail, the wire groove is used to arrange the wiring, and the wire groove is installed on the frame beam.

[0015] As can be seen from the above technical solutions, the beneficial effects of this utility model are:

[0016] 1. This transfer device adopts a dual-guide rail and dual-moving mechanism design, with each moving mechanism equipped with an independent servo motor-driven rack and pinion transmission. This design enables better synchronization under long-distance operation and heavy-load conditions, reducing synchronization errors caused by uneven load and mechanical wear differences, and improving positioning accuracy. Simultaneously, the servo motors have fast response speed and strong torque output capability, adapting to high-speed, high-frequency transfer requirements, significantly improving transfer efficiency and ensuring continuous and stable operation of the production line.

[0017] 2. The lifting mechanism of this transfer device uses a ball screw pair for transmission, which has higher transmission accuracy and stability, as well as high transmission efficiency and low energy loss. Furthermore, by rationally designing the fixed shaft length, the drive motor and other power components are kept away from the pickling tank, reducing the impact of corrosion. Simultaneously, the double linear guide rail design of the guide rail section and the limiting linear guide rail setting of the lifting mechanism provide stable support and guidance for movement and lifting, further enhancing the stability of the equipment, extending its service life, and reducing maintenance frequency and costs.

[0018] 3. The fixed frame and pickling basket of this transfer device are detachably connected by a hanging shaft and hooks, which facilitates the replacement and maintenance of the pickling basket. This design improves the versatility of the transfer device, enabling it to adapt to the transfer needs of different types of workpieces or tool baskets, making the production process more flexible and adaptable. The type of workpiece to be transferred can be quickly adjusted according to actual production needs, thereby improving the overall adaptability and production efficiency of the production line. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of the moving mechanism and the fixed beam in a specific embodiment of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the moving mechanism in a specific embodiment of this utility model.

[0023] Figure 4 This is a schematic diagram of the guide rail, limit sensor, and frame beam of a specific embodiment of this utility model.

[0024] Figure 5 This is a structural schematic diagram of the lifting mechanism according to a specific embodiment of the present utility model.

[0025] Figure 6 This is a structural schematic diagram of the support plate, ball screw pair, and limiting linear guide rail in a specific embodiment of this utility model.

[0026] Figure 7 This is a structural schematic diagram of the fixed shaft in a specific embodiment of this utility model.

[0027] Figure 8 This is a structural schematic diagram of the fixed frame and pickling basket in a specific embodiment of this utility model.

[0028] Figure 9 This is a schematic diagram of the fixed frame structure of a specific embodiment of this utility model.

[0029] Figure 10 This is a schematic diagram of the structure of the pickling basket according to a specific embodiment of the present invention.

[0030] In the diagram: 1. Guide rail section; 101. Linear guide rail; 102. Slider A; 2. Frame beam; 3. Moving mechanism; 301. Moving plate; 302. Servo motor; 303. Gear; 304. Rack; 4. Fixed beam; 5. Lifting mechanism; 501. Support plate; 502. Ball screw pair; 503. Drive motor; 6. Lifting plate; 7. Support frame; 8. Limit sensor; 9. Cable groove; 10. Fixed shaft; 11. Fixed frame; 1101. Hanging shaft; 12. Pickling basket; 1201. Hook; 13. Limiting linear guide rail; 1301. Slider B. Detailed Implementation

[0031] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0032] Please refer to the attached document. Figure 1 , 2 5, 7, and 8, in conjunction with specific embodiments, are described as follows: The workpiece pickling transfer device of this utility model includes two parallel guide rail sections 1, which are mounted on a frame beam 2 above the pickling sealing box. Each of the two guide rail sections 1 is provided with a moving mechanism 3, which can move along the trajectory of the guide rail section 1. The two moving mechanisms 3 are connected as one unit by a fixed beam 4. Both ends of the fixed beam 4 are connected to the moving mechanisms 3, and a lifting mechanism 5 is provided in the middle of the fixed beam 4. The lifting mechanism 5 is connected to a fixed shaft 10. The top end of the fixed shaft 10 is connected to the lifting mechanism 5, and the bottom end of the fixed shaft 10 is connected to a fixed frame 11. The fixed frame 11 is connected to a pickling basket 12. The lifting mechanism 5, through the fixed shaft 10, can lift the fixed frame 11 and the pickling basket 12 out of or lower them into the pickling sealing box.

[0033] When it is necessary to transfer the workpiece, the moving mechanism 3 moves along the guide rail 1 to the designated position, and then the lifting mechanism 5 lowers the fixed frame 11 and the pickling basket 12 into the pickling sealed box through the fixed shaft 10 for pickling operation. After completion, it is lifted out of the pickling sealed box.

[0034] This transfer device features a dual-guide rail and dual-moving mechanism design, which better maintains synchronization under long-distance operation and heavy-load conditions. This reduces synchronization errors caused by uneven load and differences in mechanical wear, thereby improving positioning accuracy and preventing safety issues such as workpiece collisions and drops, thus enhancing the stability and safety of the transfer process. Simultaneously, the connection between the lifting mechanism 5 and the pickling basket 12 makes the lifting operation of the workpiece more stable and reliable, ensuring the smooth progress of the pickling process.

[0035] For details, please refer to the appendix. Figure 2 and 3 The moving mechanism 3 includes a moving plate 301 and a servo motor 302. The moving plate 301 is mounted on the guide rail 1 and is connected to the end of the fixed beam 4. The servo motor 302 is mounted on the moving plate 301. The output shaft of the servo motor 302 rotates through the moving plate 301 and is connected to a gear 303 located on one side of the guide rail 1. The gear 303 is meshed with a rack 304 parallel to the guide rail 1. The rack 304 is mounted on the frame crossbeam 2 and its length corresponds to that of the guide rail 1.

[0036] When the servo motor 302 starts, it drives the gear 303 to rotate. Due to the meshing of the gear 303 and the rack 304, the moving plate 301 moves along the guide rail 1, thereby driving the fixed beam 4 and the lifting mechanism 5 and pickling basket 12 connected to it to move as a whole.

[0037] This transfer device employs a servo motor-driven rack and pinion transmission, which offers faster response and stronger torque output, better adapting to high-speed, high-frequency transfer requirements. Furthermore, each moving mechanism 3 is equipped with an independent servo motor 302, enabling more precise control and further improving the synchronization accuracy and positioning precision of horizontal movement, thus enhancing the overall efficiency of the transfer device.

[0038] For details, please refer to the appendix. Figure 4 The guide rail section 1 includes two parallel linear guide rails 101. A slider A102 is slidably mounted on the linear guide rails 101. A moving plate 301 is connected to the slider A102. A gear 303 and a rack 304 are located between the two linear guide rails 101. The rack 304 is close to one of the linear guide rails 101, and the rack 304 and the other linear guide rail 101 form the space for arranging the gear 303.

[0039] The above structure makes the sliding of the moving plate 301 on the linear guide rail 101 more stable, and at the same time, the meshing transmission of the gear 303 and the rack 304 can also be carried out smoothly, thereby driving the moving mechanism 3 to move along the guide rail 1.

[0040] The design of the two parallel linear guide rails 101 provides more stable support and guidance for the moving mechanism 3, reducing swaying and deviation during movement. At the same time, the gear 303 and rack 304 are reasonably arranged between the two linear guide rails 101, making full use of space, making the whole structure more compact, and improving the space utilization and operational stability of the device.

[0041] For details, please refer to the appendix. Figure 5 and 6 The lifting mechanism 5 includes a support plate 501 and a ball screw pair 502. The top end of the support plate 501 is connected to the fixed beam 4, and the ball screw pair 502 is installed on one side of the support plate 501. A drive motor 503 for driving the ball screw pair 502 is provided on the support plate 501. The output shaft of the drive motor 503 is connected to the screw of the ball screw pair 502 through a coupling. A lifting plate 6 is connected to the nut of the ball screw pair 502. The side of the lifting plate 6 close to the ball screw pair 502 is connected to the nut. A support frame 7 is provided on the side of the lifting plate 6 away from the ball screw pair 502. The bottom end of the support frame 7 is connected to the top end of the fixed shaft 10.

[0042] When the drive motor 503 starts, it drives the lead screw to rotate, causing the nut that cooperates with the lead screw to move up and down along the lead screw. The nut is connected to the lifting plate 6, and the lifting plate 6 is connected to the fixed shaft 10 through the support frame 7, thereby realizing the lifting action of the fixed shaft 10 and the fixed frame 11 and pickling basket 12 connected to it.

[0043] This transfer device uses a ball screw pair 502 for lifting transmission, which has higher transmission accuracy and stability. Furthermore, due to the high transmission efficiency of the ball screw pair 502, energy loss is reduced, lowering operating costs. Simultaneously, mounting the drive motor 503 and the ball screw pair 502 on the support plate 501 makes the lifting mechanism 5 more compact. Moreover, by rationally designing the length of the fixed shaft 10, the drive motor 503 and other power components are kept away from the pickling tank, reducing the corrosive effects of the pickling tank, extending the equipment's service life, and lowering maintenance frequency and costs.

[0044] For details, please refer to the appendix. Figure 8 , 9 The fixed frame 11 and the pickling basket 12 are respectively provided with hanging shafts 1101 at both ends, and the pickling basket 12 is respectively provided with hooks 1201 that cooperate with the hanging shafts 1101 at both ends. The fixed frame 11 and the pickling basket 12 are detachably connected through the hanging shafts 1101 and the hooks 1201.

[0045] When it is necessary to disassemble the pickling basket 12, simply remove the hook 1201 from the hanging shaft 1101. This detachable connection method makes the replacement and maintenance of the pickling basket 12 more convenient and quick. This design improves the versatility of the transfer device, enabling it to adapt to the transfer needs of different types of workpieces or tool baskets, expanding the application range of the device, and improving production flexibility and efficiency.

[0046] In one embodiment, reference is made to the appendix. Figure 4 The guide rail 1 is provided with limit sensors 8 at both ends, which cooperate with the moving mechanism 3. The limit sensors 8 are installed on the frame beam 2 between the two linear guide rails 101, and the limit sensors 8 are electrically connected to the servo motor 302 of the moving mechanism 3.

[0047] When the moving mechanism 3 moves along the guide rail 1 to both ends of the guide rail 1, the limit sensor 8 will detect the position of the moving mechanism 3 and transmit the signal to the servo motor 302. After receiving the signal, the servo motor 302 will stop running, thereby preventing the moving mechanism 3 from exceeding the range of the guide rail 1.

[0048] This transfer device uses limit sensor 8 to ensure the safety of the movement of the moving mechanism 3, preventing it from exceeding the guide rail range due to loss of control and reducing the probability of equipment damage and safety accidents. Simultaneously, through electrical connection with servo motor 302, automated limit control is achieved, improving the equipment's intelligence and operational reliability.

[0049] In one embodiment, reference is made to the appendix. Figure 6 The ball screw pair 502 is provided with limiting linear guide rails 13 mounted on the support plate 501 on both sides. A slider B1301 is slidably mounted on the limiting linear guide rail 13 and is connected to the corresponding side of the lifting plate 6.

[0050] When the drive motor 503 drives the ball screw pair 502 to raise and lower the lifting plate 6, the slider of the limit linear guide rail 13 will move together with the lifting plate 6, providing additional guidance and limiting function for the lifting plate 6, and ensuring that the lifting plate 6 remains stable during the lifting process.

[0051] This transfer device further improves the stability and accuracy of the lifting mechanism 5 by setting the limiting linear guide rail 13. It can limit the swaying and deviation of the lifting plate 6 during the lifting process, making the lifting of the fixed shaft 10 and pickling basket 12 more vertical and stable, reducing the damage to the workpiece caused by unstable lifting, and also improving the accuracy and consistency of the pickling operation.

[0052] In one embodiment, reference is made to the appendix. Figure 1A wire groove 9 parallel to the guide rail 1 is provided on one side. The wire groove 9 is used to arrange the wiring and is installed on the frame beam 2.

[0053] This transfer device uses cable trays 9 to arrange the wiring, including wires and signal lines connecting devices such as limit sensors 8, servo motors 302, and drive motors 503. The cable trays 9 make the wiring arrangement neater and more orderly, avoiding problems such as tangling and short circuits that could result from messy wiring, thus improving the safety and reliability of the equipment. At the same time, it also facilitates the maintenance and repair of the wiring, reducing maintenance difficulty and costs.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transfer device for pickling workpieces, comprising two parallel arranged rail sections (1) which are mounted on a machine frame crossbeam (2), characterized in that Two guide rail parts (1) are respectively provided with a moving mechanism (3), the moving mechanism (3) can move along the track of the guide rail part (1), and the two moving mechanisms (3) are connected into one by a fixed beam (4); the two ends of the fixed beam (4) are respectively connected with the moving mechanism (3), the middle part of the fixed beam (4) is provided with a lifting mechanism (5), the lifting mechanism (5) is connected with a fixed shaft (10); the top end of the fixed shaft (10) is connected with the lifting mechanism (5), the bottom end of the fixed shaft (10) is connected with a fixed frame (11), the fixed frame (11) is connected with a pickling basket (12), the lifting mechanism (5) can lift the fixed frame (11) and the pickling basket (12) out of the pickling sealed box or lower them into the pickling sealed box through the fixed shaft (10).

2. The workpiece pickling transfer apparatus according to claim 1, wherein The moving mechanism (3) comprises a moving plate (301) and a servo motor (302), the moving plate (301) is installed on the guide rail part (1), and the moving plate (301) is connected with the end of the fixed beam (4), the servo motor (302) is installed on the moving plate (301), and the output shaft of the servo motor (302) is connected with a gear (303) located on one side of the guide rail part (1) after rotating through the moving plate (301); the gear (303) is connected with a rack (304) parallel to the guide rail part (1) in a meshing mode, the rack (304) is installed on the rack cross beam (2), and the length of the rack (304) corresponds to the guide rail part (1).

3. The workpiece pickling transfer apparatus according to claim 2, wherein The guide rail part (1) comprises two parallel straight line guides (101), a sliding block A (102) is slidably arranged on the straight line guide (101), the moving plate (301) is connected with the sliding block A (102), and the gear (303) and the rack (304) are located between the two straight line guides (101); the rack (304) is close to one of the straight line guides (101), and the rack (304) and the other straight line guide (101) form an arrangement space of the gear (303).

4. The workpiece pickling transfer apparatus according to claim 3, wherein The two ends of the guide rail part (1) are respectively provided with a limit sensor (8) matched with the moving mechanism (3), the limit sensor (8) is installed on the rack cross beam (2) between the two straight line guides (101), and the limit sensor (8) is electrically connected with the servo motor (302) of the moving mechanism (3).

5. The workpiece pickling transfer apparatus according to claim 1 or 4, wherein The lifting mechanism (5) comprises a support plate (501) and a ball screw pair (502), the top end of the support plate (501) is connected with the fixed beam (4), and the ball screw pair (502) is installed on one side of the support plate (501); The support plate (501) is provided with a driving motor (503) for driving the ball screw pair (502), the output shaft of the driving motor (503) is connected with the screw rod of the ball screw pair (502) through a shaft coupling; the nut of the ball screw pair (502) is connected with a lifting plate (6), one side of the lifting plate (6) close to the ball screw pair (502) is connected with the nut, and the other side of the lifting plate (6) away from the ball screw pair (502) is provided with a support frame (7), and the bottom end of the support frame (7) is connected with the top end of the fixed shaft (10).

6. The workpiece pickling transfer apparatus according to claim 5, wherein The ball screw pair (502) is provided with a limiting linear guide rail (13) mounted on the support plate (501) on both sides, a sliding block B (1301) is slidably arranged on the limiting linear guide rail (13), and the sliding block B (1301) is connected with the corresponding side of the lifting plate (6).

7. The workpiece pickling transfer apparatus according to claim 6, wherein The two ends of the fixed frame (11) are respectively provided with a hanging shaft (1101), and the two ends of the pickling basket (12) are respectively provided with a hook (1201) matched with the hanging shaft (1101), and the fixed frame (11) and the pickling basket (12) are detachably connected through the hanging shaft (1101) and the hook (1201).

8. The workpiece pickling transfer apparatus according to claim 7, wherein One side of the guide rail part (1) is provided with a wire slot (9) parallel to the guide rail part (1), the wire slot (9) is used for arranging wires, and the wire slot (9) is mounted on the rack cross beam (2).

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