Automatic opening and closing device for shelf crossbar

Abstract

The application provides a kind of automatic opening and closing device of shelf cross bar, which can drive the shelf cross bar to realize automatic opening and closing for the shelf placed in a set position, and solve the problem of large safety hazard existing in manual and mechanical cross space operation.The automatic opening and closing unit includes a mounting frame and an opening and closing mechanism corresponding to the shelf cross bar one by one arranged on the mounting frame;the support frame body is fixed on the ground;the mounting frame is supported on the support frame body and is in sliding cooperation with the support frame body, which can move along the transverse direction of the shelf on the support frame body;when the automatic opening and closing unit moves to the position along the direction towards the shelf on the moving slide rail, the opening and closing mechanism is connected with the end of the corresponding shelf cross bar through the detachable interface, and drives the corresponding cross bar to automatically open or close;after the shelf is taken out, the automatic opening and closing unit moves away from the shelf on the moving slide rail, so that the detachable interface is disconnected with the shelf cross bar.

Description

Technical Field

[0001] This invention relates to a shelf crossbar opening and closing device, specifically an automatic shelf crossbar opening and closing device, belonging to the field of material transfer technology for automatic curtain wall processing lines. Background Technology

[0002] The current shelving system used in the processing line does not require opening devices and relies entirely on manual handling. While simple and reliable, it requires a large workforce and has limited operating time, making long-term continuous production impossible. Adopting automated processing equipment will render the existing manual material handling method incompatible. Firstly, mechanical material handling cannot, like manual handling, quickly assess the material's stacking status, cross-sectional shape, spatial position, and retrieval method during the picking process. Furthermore, the cost of making such rapid assessments is high, making it inefficient. Secondly, mechanical material handling cannot, like manual handling, adapt to various complex material stacking conditions and fine-tune material positions to obtain retrieval space without damaging the material surface.

[0003] Therefore, to achieve cost-effective automated material handling, a material handling environment with relatively fixed material locations and appropriate material spacing is needed to meet the mechanical retrieval space requirements. Using a dedicated storage rack can meet these requirements. However, the material handling process of this rack requires the opening and closing of its short side crossbars to a fixed angle. This operation must be synchronized with the material handling and storage operations and must be continuously and stably performed during processing. Manual operation cannot meet these requirements, and the overlapping work space between manual and mechanical operations poses significant safety hazards. Therefore, it is necessary to develop an automatic opening device for the short side crossbars of the rack. Summary of the Invention

[0004] In view of this, the present invention provides an automatic opening and closing device for shelf crossbars, which can drive the shelf crossbars to automatically open and close for shelves placed in a set position, thus solving the problem of significant safety hazards in the cross-space operation of manual and mechanical personnel.

[0005] The technical solution of the present invention is: an automatic opening and closing device for shelf crossbars, comprising: a support frame and an automatic opening and closing unit; the automatic opening and closing unit includes a mounting frame and an opening and closing mechanism disposed on the mounting frame corresponding one-to-one with the crossbars on the shelf; The support frame is fixed to the ground; The mounting bracket is supported on the support frame and slides with the support frame, and can move laterally along the shelf on the support frame; When the automatic opening and closing unit moves into position on the support frame in the direction toward the shelf, the opening and closing mechanism connects to the end of the corresponding shelf crossbar through the separable interface, causing the corresponding crossbar to open or close automatically; when the shelf finishes picking up materials, the automatic opening and closing unit moves on the support frame in the direction away from the shelf, so that the separable interface is disconnected from the shelf crossbar.

[0006] Based on the above solution, the opening and closing mechanism can further communicate with the MES system or processing robot system of the automated processing line, and automatically open or close the corresponding shelf crossbar by receiving signals transmitted by the MES system or processing robot system in the processing area.

[0007] Based on the above scheme, the shelf further has multiple layers along the height direction, with two crossbars on each layer, and the two crossbars are located at both ends of the shelf in the longitudinal direction; The number of opening and closing mechanisms in the automatic opening and closing unit corresponds one-to-one with the number of shelves. Each layer has two opening and closing mechanisms that correspond one-to-one with the two crossbars at both ends of the shelf's longitudinal direction. The two opening and closing mechanisms located on the same layer operate synchronously to open or close the two shelf crossbars on the same layer.

[0008] Based on the above solution, further, the upper surface of the support frame is provided with two movable slide rails spaced longitudinally, and the sliding direction of the movable slide rails is along the transverse direction of the shelf; the bottom surface of the mounting frame is provided with two sliders that respectively slide and cooperate with the two movable slide rails.

[0009] Based on the above solution, the opening and closing mechanism further includes: a power unit, a limiting slide plate, a separable interface, and a connecting shaft; The limiting slide plate is machined with an arc-shaped limiting slide groove; one end of the connecting shaft is located inside the arc-shaped limiting slide groove; The power unit is used to drive the connecting shaft to move along the trajectory of the arc-shaped limiting slide groove within the arc-shaped limiting slide groove; The connecting shaft connects to the shelf crossbar via the detachable interface. When the connecting shaft moves within the arc-shaped limiting groove, it drives the shelf crossbar to rotate at a set angle in the horizontal plane, thus opening or closing the shelf.

[0010] Based on the above scheme, the power unit is further defined as a cylinder, and the cylinder push rod is connected to the connecting shaft.

[0011] Based on the above solution, the detachable interface is further described as a C-type bayonet with an open end and a slanted long handle end; The opening end has a rectangular opening that matches the shelf crossbar, and the shelf crossbar is clamped by the two sides of the opening end, with the two sides located in the rotation direction of the shelf crossbar; The open end is connected to the connecting shaft via an obliquely long handle end.

[0012] Based on the above scheme, further, the axial direction of the cylinder is parallel to the upper surface of the limiting slide plate; the cylinder body end of the cylinder is pinned to the support base through a vertically set pin, and the support base is fixed on the limiting slide plate; The cylinder push rod is connected to the connecting shaft via a connecting hinge. One end of the connecting hinge is fixed to the cylinder push rod, and the other end is coaxially fitted onto the connecting shaft via a ring, allowing it to swing in the horizontal plane around the axis of the connecting shaft.

[0013] Based on the above solution, the opening and closing mechanism further includes a signal receiver, which includes a signal receiving end and an electric switch; The signal receiving end is used to receive signals transmitted by the MES system or processing robot system of the automated processing line, and to control the electric switch according to the received signals. The electric switch controls the air supply to the extension or retraction orifice of the cylinder to complete the extension or retraction of the cylinder push rod.

[0014] Beneficial effects: (1) The automatic opening device of the present invention can automatically open or close the crossbar of the shelf placed in the set position, solving the problem that manual operation cannot meet the requirements of the processing logistics link of the fully automatic machining production line, and that there are significant safety hazards in the cross-space operation of manual and mechanical operations; in addition, the opening and closing mechanism of the device and the crossbar of the shelf are connected by a separable connection interface, which can better match the required usage scenarios; after the shelf is transported to the designated position, the opening and closing mechanism is in place and directly connects with the crossbar of the shelf, and the mechanism's movement drives the operation of the crossbar of the shelf; after the shelf is finished picking up the material, the mechanism is disconnected from the crossbar of the shelf, and the shelf can be moved to the next area, so that the device can perform the same crossbar opening and closing action on another shelf, thereby reducing the number of devices required and reducing the cost of use.

[0015] (2) In the opening and closing mechanism of the automatic opening and closing device of the shelf crossbar of the present invention, the linear motion of the power unit is converted into rotational motion through the arc-shaped limiting slide groove, and the action of opening and closing the shelf crossbar to the set angle is stable. The arc-shaped limiting slide groove is used to limit the opening and closing position, and the position control is precise. Moreover, the automatic opening and closing device and the shelf are two independent objects. The opening and closing device is connected to the shelf crossbar through the connection interface, thereby driving the shelf crossbar to perform the opening and closing action.

[0016] (3) In the opening and closing mechanism of the automatic opening and closing device of the shelf crossbar of the present invention, the rotation limit is achieved by using an arc-shaped limiting slide, and the connecting shaft is connected, which has a stronger load-bearing capacity; and by using a cylinder that can swing in the horizontal plane to provide thrust, the force and movement direction of the connecting shaft are more matched when it rotates (that is, the thrust of the cylinder on the connecting shaft is close to the direction of movement of the connecting shaft), which reduces the force on the limiting slide and the connecting shaft, can operate stably for a long time, and will not cause deformation or affect the movement effect.

[0017] (4) In the opening and closing mechanism of the present invention, the separable connection interface adopts a C-type bayonet, and the shelf crossbar interface is a corresponding docking block. By moving the bayonet position to match the docking block, the C-type bayonet is fixed when it contacts the docking block, which can drive the docking block to rotate. Similarly, by moving the C-type bayonet, it is separated from the docking block. The operation process is simple.

[0018] (5) The automatic opening and closing device of the shelf crossbar of the present invention can receive signals transmitted by the MES system or processing robot system of the automatic processing line, determine the timing of the opening and closing mechanism action, realize the control of matching with the automatic processing line action and linking with the factory MES system, and meet the needs of automatic processing production.

[0019] (6) The automatic opening and closing device for the crossbar of the shelf of the present invention is easy to maintain. The connection interface, connecting shaft and connecting hinge of the main stress-bearing parts can be maintained and replaced independently. Moreover, the installation position of the opening and closing device is fixed and does not move with the shelf. The working position is fixed, and the number and frequency of equipment requiring maintenance are small. In addition, the connecting shaft and push rod are made of metal with high precision, which has high strength and less wear. It can ensure long-term stable operation while only requiring simple maintenance and does not need to frequently replace moving parts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the automatic shelf opening device of the present invention (without connecting shelf crossbars). Figure 2 This is a schematic diagram of the opening and closing mechanism; Figure 3 This is a schematic diagram of the C-type bayonet.

[0021] Wherein: 1-support frame; 2-moving slide rail; 3-opening and closing mechanism; 4-mounting bracket; 31-cylinder; 32-support base; 33-connecting hinge; 34-limiting slide plate; 35-connecting shaft; 36-C-shaped bayonet. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] Example 1: This embodiment provides an automatic opening and closing device for shelf crossbars, which can solve the problem that manual operation cannot meet the requirements of the processing and logistics links of fully automated machining production lines, and that there are significant safety hazards in the cross-space operation of manual and mechanical personnel.

[0024] like Figure 1 As shown, the automatic opening and closing device for the crossbars of the shelf includes: a support frame 1, a sliding rail 2, and an automatic opening and closing unit; the automatic opening and closing unit includes a mounting frame 4 and opening and closing mechanisms 3, which are set on the mounting frame 4 and correspond one-to-one with the crossbars on the shelf; in this example, the shelf has three layers along the height direction, with two crossbars in each layer, and the two crossbars are located at both ends of the shelf in the longitudinal direction; based on this, the automatic opening and closing unit includes six opening and closing mechanisms 3, which are divided into three layers, with two mechanisms in each layer.

[0025] The support frame 1 is a welded frame used to support the automatic opening and closing unit. The support frame 1 is firmly connected to the ground and cannot be moved. Two sliding rails 2 are arranged longitudinally on the upper surface of the support frame 1, and the sliding direction of the sliding rails 2 is along the transverse direction of the shelf. The bottom surface of the mounting frame 4 is provided with two sliders that slide in cooperation with the two sliding rails 2 respectively, so that the automatic opening and closing unit can slide in a directional manner on the sliding rails 2. The power source for this sliding is provided by a cylinder fixed at the same horizontal plane as the slider, that is, the cylinder pushes the automatic opening and closing unit to slide on the sliding rails 2.

[0026] In this example, the six opening and closing mechanisms 3 in the automatic opening and closing unit are arranged in three layers along the height direction. The height of the first layer of opening and closing mechanism from bottom to top is the same as the height of the first layer of crossbar of the shelf, and the interval between adjacent layers is the same as the height interval of the crossbar of the shelf. Thus, the two opening and closing mechanisms 3 of each layer correspond one-to-one with the two crossbars at both ends of the longitudinal direction of the shelf, and are used to drive the corresponding crossbars to open or close automatically. In this example, the two opening and closing mechanisms 3 of each layer are symmetrically arranged on the mounting frame 4.

[0027] The opening and closing mechanism 3 connects to the end of the shelf crossbar via a detachable interface. In this example, only the detachable interface of the opening and closing mechanism 3 extends out of the mounting frame 4, while the rest is embedded inside the mounting frame 4. When the automatic opening and closing unit moves into position on the sliding rail 2 towards the shelf, the opening and closing mechanism 3 connects to the shelf crossbar via the detachable interface. At this time, the opening and closing mechanism 3 can drive the shelf crossbar to rotate at a certain angle (90° in this example) to open or close the shelf crossbar. After the shelf finishes picking up materials, the automatic opening and closing unit moves away from the shelf on the sliding rail, disconnecting the detachable interface from the shelf crossbar. Thus, this automatic shelf crossbar opening and closing device can be matched with multiple shelves, thereby enabling continuous and stable opening and closing operations of the shelf crossbars on shelves in set positions.

[0028] The opening / closing mechanism 3 can communicate with the MES system or processing robot system of the automated processing line. By receiving signals from the MES system or processing robot system in the processing area, it automatically opens or closes the shelf crossbars placed in a set position to a set angle, thereby achieving linkage and realizing fully automatic operation of the system without manual intervention, enabling the entire production line to achieve a fully automatic processing closed loop. Two opening / closing mechanisms 3 located on the same layer operate synchronously, opening the two shelf crossbars on the same layer to facilitate material retrieval from the shelves.

[0029] Example 2: Based on the above embodiment 1, this embodiment provides a specific structural form of the opening and closing mechanism.

[0030] like Figure 2 As shown, the opening and closing mechanism 3 includes: a power unit, a limiting slide plate 34, a connecting interface, a connecting shaft 35, and a signal receiver; wherein the limiting slide plate 34 is fixed on the mounting bracket 4.

[0031] The power output end of the power unit is connected to the connecting shaft 35 via a connecting hinge 33, and is used to drive the connecting shaft 35. The power unit can be a linear motor, a hydraulic cylinder, or a pneumatic cylinder. In this example, the power unit uses a large-diameter (diameter greater than 32mm), long-stroke (stroke greater than 175mm), and high-thrust pneumatic cylinder. Specifically, in this example, a 50mm diameter and 300mm stroke pneumatic cylinder 31 is used. The initial length of the pneumatic cylinder 31 is 450mm, of which the cylinder body length is 393mm and the initial extension length of the push rod beyond the cylinder body is 57mm. The theoretical thrust at a pressure below 0.6Mpa is 80KG. In this example, the pneumatic cylinder 31 is used as the power source, and the extension and retraction of the cylinder push rod are achieved by pushing the push rod with high-pressure gas.

[0032] The support base 32 is an L-shaped support, with its horizontal portion bolted or directly welded to the limiting slide plate 34. The axis of the cylinder 31 is parallel to the upper surface of the limiting slide plate 34. The end of the cylinder body of the cylinder 31 is pinned to the lug on the vertical portion of the support base 32 via a vertically arranged pin. Thus, the cylinder 31 can swing horizontally around the pin between itself and the support base 32 on the surface of the limiting slide plate 34, with a swing angle of not less than 90°. The support base 32 provides a reaction force to the cylinder 31, ensuring that the cylinder 31 does not shift along the direction of the force during the extension and retraction of the cylinder push rod, but can swing freely in the horizontal direction, so that the force direction of the cylinder 31 and the push rod are always aligned. The position of the support base 32 on the limiting slide plate 34 is determined according to the cylinder stroke.

[0033] The connecting hinge 33 is used to connect the cylinder push rod and the connecting shaft 35. One end of the connecting hinge 33 is threadedly connected to the push rod of the cylinder 31. This end is fixed and cannot move. The other end is coaxially fitted onto the connecting shaft 35 through a ring. This end is movable and can swing horizontally around the axis of the connecting shaft 35. This, in conjunction with the support base 32 of the cylinder 31, drives the cylinder 31 to swing horizontally as a whole, so that the force on the push rod is always kept in a straight line with the direction of the push rod's movement.

[0034] The limiting slide plate 34 is a rectangular steel plate. In this example, the dimensions of the limiting slide plate 34 are 120 (length) * 800 (width) * 12mm (thickness). An arc-shaped limiting slide groove is machined on the limiting slide plate 34, and one end of the connecting shaft 35 is inserted into this arc-shaped limiting slide groove. When the cylinder 31 pushes the connecting shaft 35 through the connecting hinge 33, the connecting shaft 35 moves along the trajectory of the arc-shaped limiting slide groove within it. In this example, the outer arc radius used to form the arc-shaped limiting slide groove is 155mm, the inner arc radius is 125mm, and the central angles corresponding to the inner and outer arcs are both 90°. The fillet radius at both ends of the arc-shaped limiting slide groove is 15mm, and the angle is 180°.

[0035] The connecting shaft 35 includes a main shaft and a sleeve; the main shaft is a stepped shaft, and in this example, the main shaft has a four-segment cylindrical structure, from top to bottom: cylindrical segment A with a diameter of 10mm and a height of 10mm, cylindrical segment B with a diameter of 20mm and a height of 42mm, cylindrical segment C with a diameter of 25mm and a height of 24mm, and cylindrical segment D with a diameter of 20mm and a height of 10mm. The connecting hinge 33 is fitted outside the cylindrical segment A of the main shaft and is limited by the stepped surface between cylindrical segments A and B.

[0036] The cap is an inverted convex ring structure, consisting of two ring segments. From bottom to top, there is ring segment A with an outer diameter of φ30mm, an inner diameter of φ20mm, and a height of 10mm, and ring segment B with an outer diameter of φ40mm, an inner diameter of φ20mm, and a height of 5mm; that is, the outer circumference of the top of the cap has a shoulder.

[0037] The cap is coaxially fitted outside the cylindrical section D of the main shaft, and is limited above by the stepped surface between the cylindrical section C and the cylindrical section D. After the main shaft and the cap are nested together, the cap is nested into the arc-shaped limiting groove of the limiting groove plate 34. The annular section A of the cap is in the arc-shaped limiting groove, and the shoulders of the two annular sections abut against the upper surface of the limiting groove plate 34. That is, the annular section B slides on the surface of the limiting groove plate 34 and bears the force of the main shaft.

[0038] The connecting interface is used for connection between the shelf crossbar and the connecting shaft 35, as well as for connection between the connecting shaft 35 and the shelf crossbar itself; thereby transmitting the movement of the connecting shaft 35 to the shelf crossbar; when the connecting shaft 35 moves along the limiting slide groove, it drives the shelf crossbar to rotate a set angle in the horizontal plane. The connecting interface is an automatically detachable interface; when the interface is moved to the position corresponding to the shelf crossbar, the two connect, and the opening and closing mechanism drives the shelf crossbar to move; after the movement is completed, the shelf crossbar can be separated from the connecting interface. In this example, the connecting interface adopts the following... Figure 3 The C-type bayonet 36 shown is cut from steel and has an open end and a slanted long handle end. The open end is a rectangular frame with one side open (i.e., formed by cutting a rectangular plate along one side of a rectangular steel plate). The two sides of the open end clamp the shelf crossbar. The two sides of the open end of the C-type bayonet 36 are located in the rotation direction of the shelf crossbar. In this example, the inner square dimension of the open end of the C-type bayonet 36 is 65 mm * 65 mm, and the outer square dimension is 80 mm * 80 mm. The open end is connected to the connecting shaft through the slanted long handle end. In this example, the angle between the slanted long handle end and the horizontal side of the open end is 25°. The end of the slanted long handle end has a φ10 mm round hole for nesting connection with the cylindrical section A of the main shaft (coaxially fitted on the cylindrical section A of the main shaft above the connecting hinge 3). An M6 threaded hole is opened on the side of the slanted long handle. After nesting with the main shaft, an M6 flat-head screw is tightened in to lock the C-shaped bayonet 36 and the shaft 61. This causes the cylinder 31 to push the connecting shaft 35 to move, which in turn rotates the C-shaped bayonet 36 and drives the shelf crossbar. The cylinder push rod pushes the connecting shaft 35 to move along the track of the limit slide. When the connecting shaft 35 moves from one end of the limit slide to the other end, it drives the shelf crossbar to rotate 90° through the C-shaped bayonet, realizing the opening and closing operation of the shelf crossbar.

[0039] The signal receiver consists of a signal receiving end and an electric switch device. The signal receiving end can receive signals transmitted by the MES system or processing robot system of the automated processing line. The signal can be in the form of wireless remote control radio waves with a carrier frequency of 315MHz or 433MHz and an encoding method of rolling encoding or fixed encoding. After receiving the system signal, the signal receiving end controls the electric switch to perform corresponding operations.

[0040] The electric switch receives the operation signal from the signal receiving end and completes the corresponding operation action to control the air pump to supply air through the extension or contraction orifice, thereby realizing the extension or contraction of the cylinder push rod.

[0041] The opening and closing mechanism 3 uses a mechanical structure to convert the linear motion of the cylinder push rod into the rotational motion of the shelf crossbar through the arc-shaped limiting slide groove on the limiting slide plate 34 and the C-shaped bayonet 36, thereby realizing the opening and closing operation of the shelf crossbar driven by the cylinder.

[0042] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An automatic opening and closing device for shelf crossbars, characterized in that, include: Support frame and automatic opening and closing unit; the automatic opening and closing unit includes a mounting frame and opening and closing mechanisms that are set on the mounting frame and correspond one-to-one with the crossbars on the shelf; The support frame is fixed to the ground; The mounting bracket is supported on the support frame and slides with the support frame, and can move laterally along the shelf on the support frame; When the automatic opening and closing unit moves into position on the support frame in the direction toward the shelf, the opening and closing mechanism connects to the end of the corresponding shelf crossbar through the separable interface, driving the corresponding crossbar to open or close automatically; when the shelf finishes picking up materials, the automatic opening and closing unit moves on the support frame in the direction away from the shelf, so that the separable interface is disconnected from the shelf crossbar. The opening and closing mechanism includes: a power unit, a limiting slide plate, a separable interface, and a connecting shaft; The limiting slide plate is machined with an arc-shaped limiting slide groove; one end of the connecting shaft is located inside the arc-shaped limiting slide groove; The power unit is used to drive the connecting shaft to move along the trajectory of the arc-shaped limiting slide groove within the arc-shaped limiting slide groove; The connecting shaft is connected to the shelf crossbar through the detachable interface. When the connecting shaft moves within the arc-shaped limiting slide groove, it drives the shelf crossbar to rotate at a set angle in the horizontal plane to perform opening or closing actions. The detachable interface is a C-type bayonet with an open end and a slanted long handle end; The opening end has a rectangular opening that matches the shelf crossbar, and the shelf crossbar is clamped by the two sides of the opening end, with the two sides located in the rotation direction of the shelf crossbar; The open end is connected to the connecting shaft via an obliquely long handle end.

2. The automatic opening and closing device for the shelf crossbar as described in claim 1, characterized in that, The opening and closing mechanism can communicate with the MES system or processing robot system of the automated processing line. By receiving signals transmitted by the MES system or processing robot system in the processing area, it can automatically open or close the corresponding shelf crossbar.

3. The automatic opening and closing device for the shelf crossbar as described in claim 1, characterized in that, The shelving has multiple layers along its height, with two horizontal bars on each layer, and the two horizontal bars are located at both ends of the shelving in the longitudinal direction. The number of opening and closing mechanisms in the automatic opening and closing unit corresponds one-to-one with the number of shelves. Each layer has two opening and closing mechanisms that correspond one-to-one with the two crossbars at both ends of the shelf's longitudinal direction. The two opening and closing mechanisms located on the same layer operate synchronously to open or close the two shelf crossbars on the same layer.

4. The automatic opening and closing device for the shelf crossbar as described in claim 1, characterized in that, The upper surface of the support frame is provided with two longitudinally spaced sliding rails, and the sliding direction of the sliding rails is along the transverse direction of the shelf; the bottom surface of the mounting frame is provided with two sliders that respectively slide in cooperation with the two sliding rails.

5. The automatic opening and closing device for the shelf crossbar as described in claim 1, characterized in that, The power unit is a cylinder, and the cylinder's push rod is connected to the connecting shaft.

6. The automatic opening and closing device for the shelf crossbar as described in claim 5, characterized in that, The cylinder's axial direction is parallel to the upper surface of the limiting slide plate; the cylinder body end of the cylinder is pinned to the support base via a vertically set pin, and the support base is fixed to the limiting slide plate. The cylinder push rod is connected to the connecting shaft via a connecting hinge. One end of the connecting hinge is fixed to the cylinder push rod, and the other end is coaxially fitted onto the connecting shaft via a ring, allowing it to swing in the horizontal plane around the axis of the connecting shaft.

7. The automatic opening and closing device for the shelf crossbar as described in claim 5, characterized in that, The opening and closing mechanism also includes a signal receiver, which includes a signal receiving end and an electric switch; The signal receiving end is used to receive signals transmitted by the MES system or processing robot system of the automated processing line, and to control the electric switch according to the received signals. The electric switch controls the air supply to the extension or retraction orifice of the cylinder to complete the extension or retraction of the cylinder push rod.

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