Automatic feeding and discharging device

Abstract

The utility model belongs to the technical field of pickling equipment, and discloses an automatic feeding and discharging device. The automatic feeding and discharging device comprises a lifting plate, a bearing frame, a paw, a transmission assembly and a connecting mechanism. The bearing frame and the lifting plate are arranged in the vertical direction, and the bearing frame is used for being erected on a pickling frame below in the vertical direction; the paws are used for stretching out to support the pickling frame; one end of the transmission assembly is arranged on the lifting plate, and the other end of the transmission assembly is connected with the paw. The connecting mechanism comprises an abutting head arranged on the lifting plate, and the lifting plate can drive the abutting head to move between the separation position and the connection position. At the separation position, the abutting head is separated from the bearing frame, and the lifting plate can be away from the bearing frame in the vertical direction, so that the transmission assembly drives the gripper to extend out of the bearing frame; the lifting plate can further approach the bearing frame in the vertical direction so that the transmission assembly can drive the paw to retract and drive the abutting head to move to the joint position. The automatic feeding and discharging device can achieve automatic picking and placing of the pickling frame, operation is convenient, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of pickling equipment, in particular to an automatic loading and unloading device. Background Art

[0002] Pickling is a process of using an acid solution to remove the oxide scale and rust on the metal surface or using an acid solution to test the surface tempering after steel grinding. It is a method for cleaning the surface of metal parts or inspecting surface defects. In traditional pickling lines, manual loading and unloading is adopted. For loading, workers manually hang the lifting tool for the workpiece on the hook of the overhead crane, and then hook the claw of the lifting tool on the pickling frame loaded with the workpiece to be pickled; for unloading, workers take the lifting tool for the workpiece off the hook of the hoist, and then remove the claw of the lifting tool from the pickling frame and take out the pickled workpiece from the pickling frame. At least one or two workers are required to cooperate for the loading and unloading of the pickling line, resulting in high labor intensity, low production efficiency, and certain danger during the loading and unloading of large workpieces to be pickled. Content of the Utility Model

[0003] The purpose of the utility model is to provide an automatic loading and unloading device, which can realize the automatic picking and placing of the pickling frame, and is convenient to operate, time-saving and labor-saving.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] The utility model provides an automatic loading and unloading device, including:

[0006] A lifting plate for connecting with the hook of the overhead crane;

[0007] A bearing frame, which is arranged at a vertical interval with the lifting plate, and is used for being vertically placed on the pickling frame below;

[0008] A hand claw, which is telescopically arranged on the bearing frame and is used for extending out to support the pickling frame;

[0009] A transmission component, one end of which is arranged on the lifting plate, and the other end of which is connected with the hand claw;

[0010] A connecting mechanism, which includes an abutting head arranged on the lifting plate, and the lifting plate can drive the abutting head to move between a separation position and an engagement position;

[0011] At the joint position, the abutting head is connected to the carrier, and the lifting plate can drive the carrier to move vertically; at the separation position, the abutting head disengages from the carrier, and the lifting plate can move vertically away from the carrier so that the transmission component drives the gripper to extend from the carrier; the lifting plate can also move vertically closer to the carrier so that the transmission component drives the gripper to retract and drives the abutting head to move to the joint position.

[0012] Preferably, the connecting mechanism further includes a clamping groove box provided on the carrier. A slot extending in a first direction is formed on an end surface of the clamping groove box close to the lifting plate, and the shape of the slot matches that of the abutting head;

[0013] The abutting head can extend into the clamping groove box through the slot, and the abutting head can also rotate to abut against the inner wall of the clamping groove box vertically.

[0014] Preferably, the connecting mechanism further includes a clutch assembly. The clutch assembly is provided on the lifting plate, and the abutting head is connected to the clutch assembly. The lifting plate driving the clutch assembly to move vertically closer to or away from the carrier can drive the abutting head to rotate so that the abutting head abuts against or disengages from the clamping groove box.

[0015] Preferably, the clutch assembly includes a claw sleeve and a rotating shaft inserted through the claw sleeve. The claw sleeve has an upper joint end and a lower joint end arranged at intervals along the axial direction. A limiting post is arranged on the rotating shaft, and the limiting post extends radially. The abutting head is connected to the rotating shaft;

[0016] A plurality of first claws protruding axially are arranged on the upper joint end in the circumferential direction. The first claws have a first guiding arc surface and a first abutting surface. A first clamping groove for clamping the limiting post is formed between the first guiding arc surfaces and the first abutting surfaces of two adjacent first claws in the circumferential direction; a plurality of second claws protruding axially are arranged on the lower joint end in the circumferential direction. The second claws have a second guiding arc surface and a second abutting surface. A second clamping groove for clamping the limiting post is formed between the second guiding arc surfaces and the second abutting surfaces of two adjacent second claws in the circumferential direction;

[0017] The claw sleeve moving vertically downward can drive the limiting post to move along the first guiding arc surface into the first clamping groove so that the rotating shaft rotates clockwise; the claw sleeve moving vertically upward can drive the limiting post to move along the second guiding arc surface into the second clamping groove so that the rotating shaft rotates clockwise.

[0018] Preferably, a plurality of the grippers are provided, and the plurality of the grippers are uniformly arranged at intervals around the vertical center line of the pickling frame.

[0019] Preferably, the gripper has a receiving groove for clamping the pickling frame.

[0020] Preferably, the transmission assembly includes a rotating member and a connecting rod. The rotating member is rotatably arranged on the bearing frame. One end of the rotating member is rotatably matched with the lifting plate through the connecting rod, and the other end of the rotating member is rotatably connected with the gripper.

[0021] When the lifting plate moves away from the bearing frame, the rotating member can be driven to rotate forward through the connecting rod to drive the gripper to extend. When the lifting plate moves close to the bearing frame, the rotating member can be driven to rotate backward through the connecting rod to drive the gripper to retract.

[0022] Preferably, a guiding groove is formed on the bearing frame along the telescopic direction of the gripper, and a convex portion matched with the guiding groove is arranged on the gripper. The convex portion is in sliding fit with the guiding groove.

[0023] Preferably, an ear plate for connecting with the overhead crane hook is arranged on the lifting plate.

[0024] Preferably, at the joint position, the bearing frame protrudes radially from the gripper.

[0025] The beneficial effects of the utility model are as follows:

[0026] The automatic loading and unloading device provided by the present utility model has a lifting plate connected to the overhead crane hook. Since the abutting head and the bearing frame are connected at the joint position, the overhead crane can drive the bearing frame to move to the pickling frame loaded with the workpieces to be pickled through the lifting plate, and control the bearing frame to be erected vertically on the pickling frame. A transmission assembly is arranged between the lifting plate and the bearing frame. Since one end of the transmission assembly is connected to the gripper and the gripper is telescopically arranged on the bearing frame, the transmission assembly can drive the gripper to extend on the bearing frame to support the pickling frame. Since the lifting plate can drive the abutting head to move from the joint position to the separation position, and at the separation position, the lifting plate can move vertically away from the bearing frame, the gripper can be driven to extend through the transmission assembly to support the pickling frame. Thus, the overhead crane can lift and move the pickling frame through this automatic loading and unloading device for pickling and place it at the designated position. Since the lifting plate can also move vertically closer to the bearing frame at the separation position to retract the gripper driven by the transmission assembly, the overhead crane hook can separate the gripper from the pickling frame by vertically moving the lifting plate, thereby automatically detaching the pickled pickling frame from the overhead crane, with simple, convenient and fast operation. At the same time, since the lifting plate moving vertically closer to the bearing frame at the separation position can also drive the abutting head to move to the joint position to realize the connection between the abutting head and the bearing frame, after completing the pickling process of the previous pickling frame, the overhead crane can drive the bearing frame to move to the next pickling frame to be pickled through the lifting plate. This automatic loading and unloading device realizes the movement of the abutting head between the separation position and the joint position by the overhead crane lifting and lowering the lifting plate, thereby realizing the automatic picking and placing of the pickling frame, without manually and laboriously hooking the hook of the overhead crane or manual lifting tool on the pickling frame, saving time and effort and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. 6 is a schematic structural diagram of the automatic loading and unloading device when the abutting head is in the joint position provided by the specific embodiment of the present utility model;

[0028] Figure 2 FIG. 10 is a schematic structural diagram of the automatic loading and unloading device when the abutting head is in the separation position provided by the specific embodiment of the present utility model;

[0029] Figure 3 FIG. 14 is a schematic structural diagram of the connecting mechanism provided by the specific embodiment of the present utility model;

[0030] Figure 4 FIG. 18 is a schematic structural diagram of the clutch assembly provided by the specific embodiment of the present utility model;

[0031] Figure 5 FIG. 22 is a top view of the automatic loading and unloading device provided by the specific embodiment of the present utility model.

[0032] In the figure:

[0033] 100 - pickling frame;

[0034] 1 - lifting plate; 11 - ear plate;

[0035] 2 - bearing frame; 21 - guiding groove;

[0036] 3 - gripper; 31 - accommodating groove;

[0037] 4 - transmission assembly; 41 - rotating member; 42 - connecting rod;

[0038] 5 - connecting mechanism; 51 - abutting head; 52 - clamping groove box; 53 - clutch assembly; 531 - claw sleeve; 5311 - first claw; 5312 - first guiding arc surface; 5313 - first abutting surface; 5315 - second claw; 5316 - second guiding arc surface; 5317 - second abutting surface; 532 - rotating shaft; 533 - limiting post. Detailed implementation manners

[0039] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0040] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the", and "on the" second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below the", and "under the" second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0042] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", "left", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0043] As Figure 1 and Figure 2As shown in the figure, the utility model provides an automatic loading and unloading device, which includes a lifting plate 1, a bearing frame 2, a gripper 3, a transmission component 4 and a connecting mechanism 5. The lifting plate 1 is used for connecting with the crane hook; the bearing frame 2 and the lifting plate 1 are arranged at intervals in the vertical direction, and the bearing frame 2 is used for being erected vertically on the pickling frame 100 below; the gripper 3 is telescopically arranged on the bearing frame 2, and the gripper 3 is used for extending out to support the pickling frame 100; one end of the transmission component 4 is arranged on the lifting plate 1, and the other end of the transmission component 4 is connected with the gripper 3; the connecting mechanism 5 includes an abutting head 51 arranged on the lifting plate 1, and the lifting plate 1 can drive the abutting head 51 to move between a separation position and an engagement position; at the engagement position, the abutting head 51 is connected with the bearing frame 2, and the lifting plate 1 can drive the bearing frame 2 to move vertically; at the separation position, the abutting head 51 is disengaged from the bearing frame 2, and the lifting plate 1 can move vertically away from the bearing frame 2, so that the transmission component 4 drives the gripper 3 to extend out from the bearing frame 2; the lifting plate 1 can also move vertically close to the bearing frame 2, so that the transmission component 4 drives the gripper 3 to retract and drives the abutting head 51 to move to the engagement position. In this embodiment, the lifting plate 1 is connected with the crane hook. Since the abutting head 51 and the bearing frame 2 are connected at the engagement position, the crane can drive the bearing frame 2 to move to the pickling frame 100 loaded with the workpiece to be pickled through the lifting plate 1 and control the bearing frame 2 to be erected vertically on the pickling frame 100; a transmission component 4 is arranged between the lifting plate 1 and the bearing frame 2. Since one end of the transmission component 4 is connected with the gripper 3 and the gripper 3 is telescopically arranged on the bearing frame 2, the transmission component 4 can drive the gripper 3 to extend out on the bearing frame 2 to support the pickling frame 100; since the lifting plate 1 can drive the abutting head 51 to move from the engagement position to the separation position, and at the separation position, the lifting plate 1 can move vertically away from the bearing frame 2, the gripper 3 can be driven to extend out through the transmission component 4 to support the pickling frame 100, so that the crane can lift and move the pickling frame 100 through the automatic loading and unloading device for pickling and place it at the designated position; since the lifting plate 1 can also move vertically close to the bearing frame 2 at the separation position to make the transmission component 4 drive the gripper 3 to retract, the crane hook can disengage the gripper 3 from the pickling frame 100 by vertically moving the lifting plate 1, so that the pickling frame 100 after pickling is automatically disengaged from the crane, and the operation is simple, convenient and fast; at the same time, since the lifting plate 1 moving vertically close to the bearing frame 2 at the separation position can also drive the abutting head 51 to move to the engagement position to realize the connection between the abutting head 51 and the bearing frame 2, after the pickling process of the previous pickling frame 100 is completed, the crane can drive the bearing frame 2 to move to the next pickling frame 100 to be pickled through the lifting plate 1. The automatic loading and unloading device realizes the movement of the abutting head 51 between the separation position and the engagement position by the vertical movement of the lifting plate 1 lifted by the crane, so as to realize the automatic picking and placing of the pickling frame 100, without manually and laboriously hooking the hook claw of the crane or the manual lifting tool on the pickling frame 100, saving time and labor and improving the production efficiency.

[0044] Specifically, the pickling frame 100 is a cylindrical frame structure. The overhead crane hook is connected to the circular frame at the upper end of the pickling frame 100 through this automatic loading and unloading device to automatically lift and transport the pickling frame 100 for pickling, then place it at a designated position and release it. Before using this automatic loading and unloading device to connect with the pickling frame 100, first, the overhead crane drives this automatic loading and unloading device to move above the pickling frame 100, and then the overhead crane drives this automatic loading and unloading device to vertically descend until the bearing frame 2 is placed on the circular frame at the upper end of the pickling frame 100. During this process, the abutting heads 51 are all in the engaged position, so the lifting plate 1 can drive the bearing frame 2 to move synchronously; then the lifting plate 1 continues to approach the bearing frame 2 to drive the abutting heads 51 to move to the separated position, and then the lifting plate 1 moves away from the bearing frame 2, so that the hand claws 3 are driven by the transmission assembly 4 to extend to the lower part of the circular frame at the upper end of the pickling frame 100. Continuing to lift the lifting plate 1, the pickling frame 100 can be driven to move by the transmission assembly 4, the bearing frame 2 and the hand claws 3 for pickling; after pickling is completed, the overhead crane places the pickling frame 100 at a designated position through this automatic loading and unloading device, and then the overhead crane drives this automatic loading and unloading device to descend until the bearing frame 2 is placed on the circular frame at the upper end of the pickling frame 100. Subsequently, the overhead crane drives the lifting plate 1 to continue to descend, so that the lifting plate 1 approaches the bearing frame 2. During this process, the abutting heads 51 move from the separated position to the engaged position, and at the same time the transmission assembly 4 drives the hand claws 3 to retract, then this automatic loading and unloading device is disengaged from the pickling frame 100.

[0045] Further, as Figure 2 and Figure 3 shown, the connecting mechanism 5 further includes a clamping groove box 52 provided on the bearing frame 2. A slot extending in the first direction is opened on the end face of the clamping groove box 52 close to the lifting plate 1, and the shape of the slot matches that of the abutting head 51; the abutting head 51 can extend into the clamping groove box 52 through the slot, and the abutting head 51 can also rotate to vertically abut against the inner wall of the clamping groove box 52. In this embodiment, the clamping groove box 52 is a hollow cuboid structure, a rectangular slot is opened on its upper end face, the cross section of the abutting head 51 is a rectangle matching the slot, and the abutting head 51 can vertically extend into the clamping groove box 52 through the slot under the drive of the lifting plate 1; the abutting head 51 can also rotate to vertically abut against the top wall of the clamping groove box 52, and at this time the abutting head 51 is clamped with the clamping groove box 52. By rotating the abutting head 51, the connection and disconnection between the abutting head 51 and the bearing frame 2 are realized, with a simple structure and convenient operation.

[0046] Specifically, as Figures 1 to 3As shown, the connecting mechanism 5 further includes a clutch assembly 53. The clutch assembly 53 is disposed on the lifting plate 1. The abutting head 51 is connected to the clutch assembly 53. The lifting plate 1 drives the clutch assembly 53 to move vertically closer to or away from the carrier 2, which can drive the abutting head 51 to rotate, so that the abutting head 51 abuts against or separates from the clamping groove box 52. In this embodiment, when the lifting plate 1 moves upward away from the carrier 2 or moves downward closer to the carrier 2, the clutch assembly 53 can drive the abutting head 51 to rotate, so that the abutting head 51 is connected to or separated from the clamping groove box 52.

[0047] Specifically, as Figure 3 and Figure 4 shown, the clutch assembly 53 includes a claw sleeve 531 and a rotating shaft 532 disposed through the claw sleeve 531. The claw sleeve 531 has an upper engaging end and a lower engaging end axially spaced apart. A limiting post 533 is disposed on the rotating shaft 532. The limiting post 533 extends radially. The abutting head 51 is connected to the rotating shaft 532. A plurality of first claws 5311 protruding axially are circumferentially disposed on the upper engaging end. The first claws 5311 have a first guiding arc surface 5312 and a first abutting surface 5313. A first clamping groove for clamping the limiting post 533 is formed between the first guiding arc surface 5312 and the first abutting surface 5313 of two adjacent first claws 5311 in the circumferential direction. A plurality of second claws 5315 protruding axially are circumferentially disposed on the lower engaging end. The second claws 5315 have a second guiding arc surface 5316 and a second abutting surface 5317. A second clamping groove for clamping the limiting post 533 is formed between the second guiding arc surface 5316 and the second abutting surface 5317 of two adjacent second claws 5315 in the circumferential direction. The downward vertical movement of the claw sleeve 531 can drive the limiting post 533 to move along the first guiding arc surface 5312 into the first clamping groove, so that the rotating shaft 532 rotates clockwise. The upward vertical movement of the claw sleeve 531 can drive the limiting post 533 to move along the second guiding arc surface 5316 into the second clamping groove, so that the rotating shaft 532 rotates clockwise. In this embodiment, for the convenience of viewing the specific structure of the claw sleeve 531, Figure 4In this case, the limit post 533 is hidden. The jaw sleeve 531 is sleeved on the rotating shaft 532, and the rotating shaft 532 can rotate relative to the jaw sleeve 531; on the inner wall of the jaw sleeve 531, there are separated and corresponding upper joint ends and lower joint ends. Along the circumferential direction of the upper joint end, continuous first jaws 5311 are arranged, and along the circumferential direction of the lower joint end, continuous second jaws 5315 are arranged. The first jaws 5311 and the second jaws 5315 have the same structure; when the jaw sleeve 531 moves up and down relative to the rotating shaft 532, the rotating shaft 532 can be rotated by the abutment of the first jaws 5311 and the second jaws 5315 against the limit post 533. Specifically, the first jaws 5311 and the second jaws 5315 are arranged in an axial offset manner, that is, the first jaws 5311 are axially aligned with the second guiding arc surface 5316, and the second jaws 5315 are axially aligned with the first guiding arc surface 5312, so as to ensure that when the jaw sleeve 531 moves up and down relative to the rotating shaft 532, the first guiding arc surface 5312 and the second guiding arc surface 5316 can smoothly abut against the limit post 533 and guide its movement.

[0048] In this embodiment, the specific working process of the clutch assembly 53 is roughly divided into the following three main processes:

[0049] Engaging position: When the abutting head 51 is in the engaging position, the abutting head 51 extends into the clamping groove box 52 and is in abutting connection with the clamping groove box 52, and the limit post 533 on the rotating shaft 532 is clamped in the second clamping groove between the second guiding arc surface 5316 and the second abutting surface 5317. At this time, the lifting plate 1 and the carrier 2 are directly connected through the connecting mechanism 5. Therefore, the overhead crane can drive the carrier 2 to move synchronously through the lifting plate 1, and at this time, the gripper 3 retracts;

[0050] The joining position moves to the separation position: After the carrier 2 descends and is placed on the circular frame at the upper end of the pickling frame 100, the carrier 2 cannot continue to descend, while the lifting plate 1 can continue to descend relative to the carrier 2 under the drive of the overhead crane. During the process of the claw sleeve 531 following the lifting plate 1 to descend, the first guiding arc surface 5312 will abut downward against the limiting post 533 of the rotating shaft 532 and continuously press downward on the limiting post 533. Therefore, the limiting post 533 can move along the first guiding arc surface 5312 to the first card slot under the guidance of the first guiding arc surface 5312. During this process, the movement of the limiting post 533 drives the rotating shaft 532 to rotate clockwise, and at this time, the abutting head 51 also rotates clockwise following the rotating shaft 532; when the limiting post 533 is clamped in the first card slot, the overhead crane drives the lifting plate 1 to lift, then the second guiding arc surface 5316 will abut upward against the limiting post 533 and continuously press upward on the limiting post 533. Therefore, the limiting post 533 can move along the second guiding arc surface 5316 to the second card slot under the guidance of the second guiding arc surface 5316. During this process, the movement of the limiting post 533 drives the rotating shaft 532 to continue rotating clockwise, and the abutting head 51 also further rotates clockwise following the rotating shaft 532; when the limiting post 533 is clamped in the second card slot, the abutting head 51 rotates clockwise to match the slot of the clamping groove box 52. Subsequently, the overhead crane continues to lift the lifting plate 1, then the clutch assembly 53 and the abutting head 51 both disengage from the carrier 2. At this time, the abutting head 51 is located at the separation position; the lifting plate 1 moves away from the carrier 2 in the vertical direction. The lifting plate 1 is connected to the carrier 2 through the transmission assembly 4. Therefore, when the lifting plate 1 moves away from the carrier 2, it can drive the gripper 3 to extend from the carrier 2 to the bottom of the circular frame at the upper end of the pickling frame 100 through the transmission assembly 4. The overhead crane continues to lift the lifting plate 1 upward to realize the support of the pickling frame 100 by the gripper 3, so as to realize the lifting of the pickling frame 100 by the overhead crane.

[0051] Separation position moves to the engagement position: After pickling is completed, the overhead crane places the pickling frame 100 at the designated position through this automatic loading and unloading device. Then, the overhead crane drives the lifting plate 1 to descend, and the bearing frame 2 also descends and is placed on the circular frame at the upper end of the pickling frame 100. At this time, the gripper 3 also disengages from the connection with the pickling frame 100 vertically; then, the lifting plate 1 continues to descend under the drive of the overhead crane and approaches the bearing frame 2, and the transmission assembly 4 drives the gripper 3 to retract; during this process, the clutch assembly 53 will follow the lifting plate 1 to descend until the rotating shaft 532 abuts against the bottom surface of the clamping groove box 52 through the abutting head 51. Subsequently, the rotating shaft 532 stops moving vertically, while the claw sleeve 531 will continue to move downward relative to the rotating shaft 532 and approach the bearing frame 2. Among them, the first guiding arc surface 5312 will abut downward against the limiting column 533 of the rotating shaft 532 and continuously press downward on the limiting column 533. Therefore, the limiting column 533 can move along the first guiding arc surface 5312 to the first card slot under the guidance of the first guiding arc surface 5312. During this process, the movement of the limiting column 533 drives the rotating shaft 532 to rotate clockwise. At this time, the abutting head 51 also follows the rotating shaft 532 to rotate clockwise; when the limiting column 533 is clamped in the first card slot, the overhead crane drives the lifting plate 1 to lift, then the second guiding arc surface 5316 will abut upward against the limiting column 533 and continuously press upward on the limiting column 533. Therefore, the limiting column 533 can move along the second guiding arc surface 5316 to the second card slot under the guidance of the second guiding arc surface 5316. During this process, the movement of the limiting column 533 drives the rotating shaft 532 to continue rotating clockwise, and the abutting head 51 also follows the rotating shaft 532 to further rotate clockwise. When the limiting column 533 is clamped in the second card slot, the abutting head 51 rotates to a position where its length direction is perpendicular to the first direction. Therefore, the abutting head 51 can abut against the clamping groove box 52, and at this time, the abutting head 51 is located at the engagement position; the lifting plate 1 and the bearing frame 2 are directly connected through the connecting mechanism 5, and the overhead crane drives the bearing frame 2 to move above the next pickling frame 100 to be pickled through the lifting plate 1, so as to prepare for the pickling operation of the next workpiece.

[0052] In this embodiment, as Figure 1 , Figure 2 and Figure 5 shown, a plurality of grippers 3 are provided, and the plurality of grippers 3 are arranged at equal intervals around the vertical center line of the pickling frame 100. In this embodiment, the bearing frame 2 is a cross beam structure, and four grippers 3 are also provided corresponding to the cross beam structure. The four grippers 3 can stably and evenly support the pickling frame 100, thereby ensuring the stability of lifting the pickling frame 100.

[0053] Specifically, as Figure 1 and Figure 2As shown in the figure, the transmission assembly 4 includes a rotating member 41 and a connecting rod 42. The rotating member 41 is rotatably arranged on the bearing frame 2. One end of the rotating member 41 is rotatably engaged with the lifting plate 1 through the connecting rod 42, and the other end of the rotating member 41 is rotatably connected to the claw 3. When the lifting plate 1 moves away from the bearing frame 2, it can drive the rotating member 41 to rotate forward through the connecting rod 42 to drive the claw 3 to extend. When the lifting plate 1 approaches the bearing frame 2, it can drive the rotating member 41 to rotate reversely through the connecting rod 42 to drive the claw 3 to retract. In this embodiment, the rotating member 41 has an L-shaped structure. The middle position of the rotating member 41 is rotatably arranged on the bearing frame 2, and the two ends of the rotating member 41 are respectively rotatably connected to the connecting rod 42 and the claw 3. When the lifting plate 1 moves vertically away from the bearing frame 2, the connecting rod 42 drives the rotating member 41 to rotate forward, and the rotating member 41 will form a lever structure, and the other end of the rotating member 41 will push the claw 3 to extend from the bearing frame 2. On the contrary, when the lifting plate 1 moves vertically close to the bearing frame 2, the connecting rod 42 drives the rotating member 41 to rotate reversely, and the other end of the rotating member 41 will pull the claw 3 to retract the claw 3.

[0054] Specifically, as Figure 1 shown, a guiding groove 21 is formed on the bearing frame 2 along the telescopic direction of the claw 3. A convex portion matching the guiding groove 21 is arranged on the claw 3, and the convex portion is slidably engaged with the guiding groove 21. In this embodiment, a sliding groove for the claw 3 to slide is formed on the bearing frame 2, and the claw 3 telescopically moves on the bearing frame 2 along the sliding groove. A guiding groove 21 is also formed on the side surface of the bearing frame 2. A convex portion is arranged on the claw 3, and the convex portion is embedded in the guiding groove 21 and can slide in the guiding groove 21, so as to guide and limit the telescopic movement of the claw 3 and ensure that the claw 3 smoothly telescopically moves on the bearing frame 2.

[0055] Furthermore, as Figure 1 and Figure 2 shown, the claw 3 has a receiving groove 31 for clamping the pickling frame 100. In this embodiment, the end of the claw 3 is hook-shaped and has a receiving groove 31 for fixing the upper circular frame of the pickling frame 100. When the lifting plate 1 rises and moves away from the bearing frame 2, the claw 3 horizontally extends to the lower part of the upper circular frame of the pickling frame 100. The overhead crane pulls the lifting plate 1 upward. The lifting plate 1 drives the bearing frame 2 to move upward through the transmission assembly 4, then the claw 3 also moves upward and abuts against the circular frame of the pickling frame 100, and the circular frame is clamped into the receiving groove 31 of the claw 3, thereby improving the fixing effect of the claw 3 on the pickling frame 100 and preventing the pickling frame 100 from falling off the claw 3 due to unstable movement during the process of the overhead crane lifting the pickling frame 100.

[0056] Furthermore, as Figure 1 and Figure 2 shown, an ear plate 11 for connecting with the overhead crane hook is arranged on the lifting plate 1. In this embodiment, the overhead crane hook is connected to the automatic loading and unloading device through the ear plate 11.

[0057] Further, as Figure 1 shown, at the joint position, the carrier 2 protrudes radially from the gripper 3. In this embodiment, at the joint position, the gripper 3 is in a retracted state and does not extend horizontally beyond the carrier 2. The lifting plate 1 and the carrier 2 are directly connected by a connecting mechanism 5. The overhead crane drives the carrier 2 to be lowered onto the circular frame at the upper end of the pickling frame 100 through the lifting plate 1. The length of the carrier 2 is greater than the diameter of the circular frame. Therefore, the carrier 2 is vertically placed on the circular frame, and the retracted gripper 3 falls below the circular frame through the circular frame; then, the contact head 51 is disengaged from the carrier 2 through the clutch assembly 53, and the lifting plate 1 is lifted, so that the gripper 3 extends below the circular frame. Continuing to lift the lifting plate 1 can make the receiving groove 31 of the gripper 3 engage with the circular frame, thereby realizing the lifting and transportation of the pickling frame 100.

[0058] Further, proximity switches are provided at the four ends of the cross-shaped carrier 2 for detecting the gripper 3. The specific detection process is as follows: When the transmission assembly 4 drives the gripper 3 to extend to support and lift the pickling frame 100, the proximity switch will detect the position where the gripper 3 extends. If the gripper 3 extends to the specified position, the proximity switch will detect the gripper 3. At this time, the external control unit connected to the proximity switch will receive a signal, indicating that the gripper 3 extends in place and the receiving groove 31 is directly below the circular frame at the upper end of the pickling frame 100, then the pickling frame 100 can be continuously lifted and transported; if the gripper 3 fails to extend to the specified position due to an accident, the proximity switch cannot detect the gripper 3. At this time, the external control unit connected to the proximity switch cannot receive the signal output by the proximity switch, proving that the gripper 3 does not extend in place. At this time, the receiving groove 31 of the gripper 3 is not directly below the circular frame at the upper end of the pickling frame 100, and the staff will perform on-site maintenance and troubleshooting; it can be understood that the external control unit needs to receive the signals transmitted by the four proximity switches before proceeding with the next lifting operation.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. Automatic loading and unloading device, characterized in that: include: A lifting plate (1) is used to be connected to a crane hook; A carrier frame (2), the carrier frame (2) and the lifting plate (1) are arranged vertically spaced apart, and the carrier frame (2) is used to be vertically erected on a pickling frame (100) below; A hand claw (3), the hand claw (3) being telescopically arranged on the supporting frame (2), the hand claw (3) being used to be extended to support the pickling frame (100); A transmission assembly (4), one end of the transmission assembly (4) being arranged on the lifting plate (1), and the other end of the transmission assembly (4) being connected to the gripper (3); A connecting mechanism (5), the connecting mechanism (5) comprising an abutment head (51) arranged on the lifting plate (1), the lifting plate (1) being capable of driving the abutment head (51) to move between a separation position and an engagement position; In the engaged position, the abutment head (51) is connected to the support frame (2), and the lifting plate (1) can drive the support frame (2) to move vertically; in the separated position, the abutment head (51) is detached from the support frame (2), and the lifting plate (1) can move vertically away from the support frame (2), so that the transmission component (4) drives the hand claw (3) to extend from the support frame (2); the lifting plate (1) can also move vertically close to the support frame (2), so that the transmission component (4) drives the hand claw (3) to retract and drive the abutment head (51) to move to the engaged position.

2. The automatic loading and unloading device according to claim 1, characterized in that: The connecting mechanism (5) further comprises a card slot box (52) arranged on the carrier (2), wherein the card slot box (52) has a slot extending in a first direction on an end surface close to the lifting plate (1), and the slot matches the shape of the abutment head (51); The abutment head (51) can extend into the clamping slot box (52) through the slot, and the abutment head (51) can also rotate to abut against the inner wall of the clamping slot box (52) in a vertical direction.

3. The automatic loading and unloading device according to claim 2 is characterized in that: The connecting mechanism (5) further comprises a clutch assembly (53), wherein the clutch assembly (53) is arranged on the lifting plate (1), and the abutment head (51) is connected to the clutch assembly (53). The lifting plate (1) drives the clutch assembly (53) to move vertically toward or away from the supporting frame (2) to drive the abutment head (51) to rotate, so that the abutment head (51) abuts against or separates from the snap-in slot box (52).

4. The automatic loading and unloading device according to claim 3 is characterized in that: The clutch assembly (53) comprises a claw sleeve (531) and a rotating shaft (532) inserted into the claw sleeve (531); the claw sleeve (531) has an upper engaging end and a lower engaging end spaced apart in the axial direction; a limiting column (533) is arranged on the rotating shaft (532); the limiting column (533) extends in the radial direction; and the abutment head (51) is connected to the rotating shaft (532); The upper engaging end is provided with a plurality of first claws (5311) protruding in the axial direction along the circumferential direction, the first claws (5311) having a first guiding arc surface (5312) and a first abutting surface (5313), and a first clamping groove for clamping the limiting column (533) is formed between the first guiding arc surface (5312) and the first abutting surface (5313) of two circumferentially adjacent first claws (5311); the lower engaging end is provided with a plurality of second claws (5315) protruding in the axial direction along the circumferential direction, the second claws (5315) having a second guiding arc surface (5316) and a second abutting surface (5317), and a second clamping groove for clamping the limiting column (533) is formed between the second guiding arc surface (5316) and the second abutting surface (5317) of two circumferentially adjacent second claws (5315); The claw sleeve (531) moves vertically downward and can drive the limiting column (533) to move along the first guide arc surface (5312) to the first slot, so that the rotating shaft (532) rotates clockwise; the claw sleeve (531) moves vertically upward and can drive the limiting column (533) to move along the second guide arc surface (5316) to the second slot, so that the rotating shaft (532) rotates clockwise.

5. The automatic loading and unloading device according to claim 1, characterized in that: A plurality of the hand claws (3) are provided, and the plurality of the hand claws (3) are evenly spaced around the vertical center line of the pickling frame (100).

6. The automatic loading and unloading device according to claim 5, characterized in that: The hand claw (3) has a receiving groove (31) for blocking the pickling frame (100).

7. The automatic loading and unloading device according to claim 1, characterized in that: The transmission assembly (4) comprises a rotating member (41) and a connecting rod (42); the rotating member (41) is rotatably arranged on the carrier frame (2); one end of the rotating member (41) is rotatably matched with the lifting plate (1) through the connecting rod (42); and the other end of the rotating member (41) is rotatably connected to the hand claw (3); When the lifting plate (1) is away from the supporting frame (2), it can drive the rotating member (41) to rotate in the forward direction through the connecting rod (42) to drive the claw (3) to extend; when the lifting plate (1) is close to the supporting frame (2), it can drive the rotating member (41) to rotate in the reverse direction through the connecting rod (42) to drive the claw (3) to retract.

8. The automatic loading and unloading device according to claim 7, characterized in that: A guide groove (21) is provided on the carrier (2) along the extension and retraction direction of the hand claw (3), and a convex portion matching the guide groove (21) is provided on the hand claw (3), and the convex portion is slidably matched with the guide groove (21).

9. The automatic loading and unloading device according to claim 1, characterized in that: The lifting plate (1) is provided with an ear plate (11) for connecting with the overhead travelling crane hook.

10. The automatic loading and unloading device according to claim 1, characterized in that: In the engagement position, the carrier (2) protrudes radially from the claw (3).

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