A side-insert positioning type online turnover device

CN224492694UActive Publication Date: 2026-07-14GKG PRECISION MACHINE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GKG PRECISION MACHINE
Filing Date
2025-08-13
Publication Date
2026-07-14

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Abstract

The utility model relates to the technical field of transportation operation, specifically disclose a side insertion positioning formula online turnover device, include: turnover frame, conveying device, install in the lower part of turnover frame, including conveyer belt and the support boss under conveyer belt, pressing device, install in the upper part of turnover frame, be used for downward cooperation support boss and press tightly the workpiece on conveyer belt, turnover drive assembly, drive end is connected with turnover frame, is used for through turnover frame drive conveying device and pressing device upside down, side insertion positioning assembly has the locking state that extends to insert turnover frame to limit the up-and-down rotation of turnover frame, and has the unlocking state that has retraction to separate from the turnover frame. The side insertion positioning formula online turnover device provided by the utility model can complete the online turnover operation of the workpiece, and further shorten the material circulation path when operating at the bottom of the workpiece.
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Description

Technical Field

[0001] This utility model relates to the field of transportation operation technology, and in particular to a side-insertion positioning online flipping device. Background Technology

[0002] In existing bolt-locking assembly processes for small and large workpieces, the following steps are commonly used:

[0003] The conveyor belt transports large workpieces to designated workstations;

[0004] The robotic arm picks it up and flips it 180°, then places it on a separate assembly platform;

[0005] Subsequently, the robotic arm picks up the small workpiece and places it on the inverted large workpiece, and then tightens the bolts.

[0006] Finally, the robotic arm needs to grab the assembled component again and perform a second 180° flip to restore the large workpiece to its original posture before it can be placed back on the conveyor belt and transported downstream.

[0007] This process has significant drawbacks:

[0008] First, the material flow path is significantly lengthened and the process is complicated: large workpieces are repeatedly turned over - they need to be transferred from the conveyor belt to the flipping station, then to the assembly station, and finally flipped over and put back on the conveyor belt.

[0009] Secondly, critical assembly operations (placing small workpieces and tightening bolts) must be performed on separate platforms, forcing large workpieces to detach from the continuously running conveyor belt system, causing a forced stop in the entire line's cycle time.

[0010] Therefore, this utility model is dedicated to developing an online flipping device for completing the online flipping operation of workpieces, thereby shortening the material flow path when operating at the bottom of the workpiece.

[0011] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0012] One objective of this invention is to provide a side-insertion positioning online flipping device that can complete the online flipping operation of the workpiece, thereby shortening the material flow path when operating at the bottom of the workpiece.

[0013] To achieve the above objectives, this utility model provides a side-insertion positioning online flipping device, comprising:

[0014] Flip rack;

[0015] A conveying device, which is installed at the lower part of the tilting frame, includes a conveyor belt and a support boss located below the conveyor belt;

[0016] A pressing device is installed on the upper part of the tilting frame and is used to press the workpiece located on the conveyor belt downward in conjunction with the support boss;

[0017] A flipping drive assembly, wherein the drive end of the flipping drive assembly is connected to the flipping frame, and is used to drive the conveying device and the pressing device to flip up and down through the flipping frame;

[0018] A side-insertion positioning component is located on the side of the flipping frame, having a locking state in which it extends to insert into the flipping frame to restrict the up-and-down rotation of the flipping frame; and an unlocking state in which it retracts to disengage from the flipping frame.

[0019] Optionally, the conveyor belt includes an upper belt segment and a lower belt segment located below the upper belt segment and moving in the opposite direction to the upper belt segment;

[0020] The supporting boss is located below the upper belt segment and above the lower belt segment.

[0021] Optionally, the clamping device includes:

[0022] A lifting pressure plate is located above the upper belt section and is slidably mounted vertically with the tilting frame.

[0023] A pressure plate direct drive mechanism is installed on the tilting frame, and the drive end of the pressure plate direct drive mechanism is connected to the lifting pressure plate to drive the lifting pressure plate to move up and down.

[0024] Optionally, the flipping frame includes:

[0025] The upper horizontal plate, wherein the lifting pressure plate is located below the middle position of the upper horizontal plate and is slidably connected to the upper horizontal plate;

[0026] The lower side plate is located below the edge of the upper horizontal plate, and the conveyor belt and the support boss are both installed on the inner side of the lower side plate.

[0027] A vertical connecting plate, the middle of which is connected to the driving end of the flipping drive assembly, one end of which is connected to the upper horizontal plate and the other end of which is connected to the lower side plate.

[0028] Optionally, the flipping frame further includes:

[0029] A positioning lock block is installed on the outside of the lower side plate and has a positioning slot for the side-insertion positioning component to be inserted.

[0030] Optionally, the cross-sectional shape of the positioning slot is an open trapezoidal slot structure that gradually increases in size towards the side-insertion positioning component.

[0031] Optionally, the side-insertion positioning component includes a trapezoidal insert block that matches the positioning slot, and an insert block direct drive mechanism that drives the trapezoidal insert block closer to or further away from the positioning lock block.

[0032] Optionally, each end of the lower side plate is provided with a positioning lock block, and the positioning slots of the two positioning lock blocks are centrally symmetrical about the rotation axis of the flipping frame.

[0033] Optionally, the bottom of the lifting pressure plate is provided with a positioning pin for inserting into the positioning hole of the workpiece.

[0034] Optionally, the flip drive component includes:

[0035] A fixed upright plate is provided, located on the outside of the tilting frame.

[0036] A rotating disk is rotatably mounted on the inner side of the fixed upright plate and is synchronously connected to the tilting frame.

[0037] A turntable drive mechanism is mounted on the fixed upright plate, and the drive end of the turntable drive mechanism is connected to the rotating disk for transmission. The rotating disk drives the tilting frame to tilt up and down relative to the fixed upright plate.

[0038] The beneficial effects of this utility model are as follows: It provides a side-insertion positioning online flipping device, in which the entire flipping action is performed directly on the conveyor line, avoiding the steps required in traditional methods to move the workpiece off the conveyor line to an independent platform for flipping and assembly. This eliminates two workpiece handling operations and the assembly pause on the independent platform, greatly shortening the material flow path, minimizing line interruptions, and improving production efficiency. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0040] Figure 1 A schematic diagram of the side-insertion positioning online flipping device provided in the embodiment;

[0041] Figure 2 This is a schematic diagram of the conveying device provided in the embodiment.

[0042] In the picture:

[0043] 100, workpiece; 100a, positioning hole;

[0044] 1. Tilting frame; 101. Upper horizontal plate; 102. Lower side plate; 103. Vertical connecting plate; 104. Positioning lock block; 1041. Positioning slot;

[0045] 2. Conveying device; 201. Conveyor belt; 2011. Upper belt section; 2012. Lower belt section; 202. Support boss;

[0046] 3. Clamping device; 301. Lifting pressure plate; 3011. Positioning pin; 302. Pressure plate direct drive mechanism;

[0047] 4. Tilting drive assembly; 401. Fixed upright plate; 402. Rotary disk; 403. Rotary disk drive mechanism;

[0048] 5. Side-insertion positioning assembly; 501. Trapezoidal insert block; 502. Insert block direct drive mechanism. Detailed Implementation

[0049] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0050] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0051] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0052] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0053] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0054] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0055] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0056] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0057] The direct drive mechanism in this invention can be a linear motor, a cylinder, a hydraulic cylinder, or a motor lead screw and slider assembly, etc.; the rotary drive mechanism can be a servo motor, a stepper motor, or a rotary cylinder, etc.

[0058] See Figure 1 and Figure 2 This embodiment provides a side-insertion positioning online flipping device, including:

[0059] Flipping rack 1;

[0060] Conveying device 2, which is installed at the lower part of the tilting frame 1, includes a conveyor belt 201 and a support boss 202 located below the conveyor belt 201;

[0061] A pressing device 3 is installed on the upper part of the flipping frame 1 and is used to press the workpiece 100 located on the conveyor belt 201 downward in conjunction with the support boss 202.

[0062] The flipping drive assembly 4 is connected to the flipping frame 1 and is used to drive the conveying device 2 and the pressing device 3 to flip up and down through the flipping frame 1.

[0063] The side-insertion positioning component 5 is located on the side of the flipping frame 1, and has a locking state in which it extends to insert into the flipping frame 1 to restrict the up and down rotation of the flipping frame 1; and an unlocking state in which it retracts to disengage from the flipping frame 1.

[0064] The side-insertion positioning online flipping device provided by this utility model works as follows, aiming to enable the workpiece 100 to complete a 180° flip without leaving the conveyor belt 201:

[0065] S10: Workpiece 100 is transferred to the flipping station:

[0066] The conveyor belt 201 runs continuously, transporting the large workpiece 100 that needs to be bottomed (such as assembling small workpiece 100) to the designated position inside the flipping device (above the support boss 202).

[0067] S20: Workpiece 100 positioning and clamping:

[0068] When the workpiece 100 reaches the predetermined position, the clamping device 3 is activated (e.g., the cylinder drives the pressure plate to move down).

[0069] The clamping device 3 moves downward and engages with the support boss 202 of the lower conveying device 2 to firmly clamp and fix the workpiece 100 onto the conveyor belt 201. At this time, the conveyor belt 201 is in a locked state, ensuring that the workpiece 100 will not move during the flipping process.

[0070] S30: Side-mounted positioning unlock (key step):

[0071] The side-insertion positioning component 5 retracts and exits from the locked position (such as the insertion hole or stop) of the flip frame 1, entering the unlocked state. This allows the flip frame 1 to rotate freely.

[0072] S40: Perform a 180° flip:

[0073] The flip drive assembly 4 (such as a rotary cylinder, motor drive reducer, etc.) is started.

[0074] The drive assembly causes the tilting frame 1 (as the main structure) to begin rotating around its axis of rotation.

[0075] Since the conveying device 2 (including the conveyor belt 201 and the support boss 202) and the clamping device 3 are both fixedly installed on the flipping frame 1, the entire "working unit" (clamping device 3, workpiece 100, and conveying device 2) that clamps the workpiece 100 rotates 180° together with the flipping frame 1.

[0076] In this way, the workpiece 100, which was originally in the "upright" position, becomes the "inverted" position (bottom side up) after being flipped. During the flipping process, the conveyor belt 201 is locked and does not rotate, and the clamping device 3 remains in the clamping state.

[0077] S50: Side insertion positioning lock:

[0078] When the flipping frame 1 is precisely rotated to the 180° position (i.e., the inverted state is in place), the side insertion positioning component 5 extends and precisely inserts into the corresponding positioning structure (such as a hole or slot) of the flipping frame 1, entering the locking state.

[0079] This locking state rigidly restricts the vertical rotational freedom of the tilting frame 1, firmly positioning it in the inverted position and preventing vibration or force during subsequent assembly operations from causing the tilting frame 1 to shift position.

[0080] S60: Bottom operation of workpiece 100:

[0081] With the flipping frame 1 rigidly locked in an inverted state, the workpiece 100 is firmly clamped with its bottom surface facing upwards.

[0082] At this point, an online robotic arm or other manipulator can easily perform the required tasks (e.g., placing small workpiece 100, tightening bolts for assembly, etc.) on the bottom (now facing upwards) of workpiece 100. All these operations are performed directly on the continuously running conveyor system without removing workpiece 100 and placing it on a separate assembly platform.

[0083] S70: Workpiece 100 reset

[0084] After the bottom work is completed, the side-insertion positioning component 5 retracts and unlocks again.

[0085] The flip drive assembly 4 reverses, driving the flip frame 1 (together with the clamping device 3 and the conveying device 2) to flip back from the inverted 180° position to the initial 0° position.

[0086] After flipping into place, the side-insertion positioning component 5 is activated, extending and locking the flipping frame 1 in the initial position.

[0087] S80: Clenching / Releasing and Transmission Recovery:

[0088] The clamping device 3 is lifted, releasing the clamp on the workpiece 100.

[0089] Conveyor belt 201 is unlocked and restarted, smoothly conveying the workpiece 100 with the bottom assembly completed out of the flipping device and continuing to flow along the production line to the next process.

[0090] In the above process, the entire flipping action is performed directly on the conveyor line, avoiding the steps required in traditional methods where workpiece 100 needs to be moved off the conveyor line to an independent platform for flipping and assembly. This eliminates two workpiece 100 handling stops and assembly pauses on the independent platform, significantly shortening the material flow path, minimizing line downtime, and improving production efficiency.

[0091] In this embodiment, the conveyor belt 201 includes an upper belt segment 2011 and a lower belt segment 2012 located below the upper belt segment 2011 and moving in the opposite direction to the upper belt segment 2011; wherein, the support boss 202 is located below the upper belt segment 2011 and above the lower belt segment 2012.

[0092] There is a certain gap between the support boss 202 and the upper belt section 2011. When the clamping device 3 is not pressing the workpiece 100 downwards, the bottom surface of the conveyor belt 201 is separated from the top surface of the support boss 202 to avoid affecting the conveyor belt 201's transport of the workpiece 100. When the clamping device 3 presses the workpiece 100 downwards, the conveyor belt 201 is squeezed downwards and deformed, and then pressed together with the workpiece 100 by the support boss 202 and the clamping device 3.

[0093] Optionally, the clamping device 3 includes:

[0094] The lifting pressure plate 301 is located above the upper belt section 2011 and is slidably arranged with the tilting frame 1.

[0095] The pressure plate direct drive mechanism 302 is mounted on the flipping frame 1, and the drive end of the pressure plate direct drive mechanism 302 is connected to the lifting pressure plate 301 to drive the lifting pressure plate 301 to move up and down.

[0096] Accordingly, the flipping frame 1 includes:

[0097] The upper horizontal plate 101, the lifting pressure plate 301 is located below the middle position of the upper horizontal plate 101 and is slidably connected to the upper horizontal plate 101 in the upper and lower directions;

[0098] The lower side plate 102 is located below the edge of the upper horizontal plate 101, and the conveyor belt 201 and the support boss 202 are both installed on the inner side of the lower side plate 102.

[0099] A vertical connecting plate 103 is provided, the middle part of which is connected to the driving end of the flipping drive assembly 4. One end of the vertical connecting plate 103 is connected to the upper horizontal plate 101, and the other end is connected to the lower side plate 102.

[0100] The pressure plate direct drive mechanism 302 drives the lifting pressure plate 301 to slide downward, which can cooperate with the support boss 202 to clamp the workpiece 100 and the conveyor belt 201, thereby ensuring that the workpiece 100 will not shift when it is flipped; conversely, the pressure plate direct drive mechanism 302 drives the lifting pressure plate 301 to slide upward, which can release the workpiece 100 and the conveyor belt 201 so that the conveyor belt 201 can transport the workpiece 100.

[0101] Optionally, the bottom of the lifting pressure plate 301 is provided with a positioning pin 3011 for inserting into the positioning hole 100a of the workpiece 100. When the pressure plate direct drive mechanism 302 drives the lifting pressure plate 301 to move downward, the positioning pin 3011 is inserted into the positioning hole 100a of the workpiece 100, thereby achieving precise horizontal positioning of the workpiece 100.

[0102] In this embodiment, the flipping frame 1 further includes a positioning lock block 104, which is installed on the outside of the lower side plate 102 and has a positioning slot 1041 for the side insertion positioning component 5 to be inserted.

[0103] Optionally, the cross-sectional shape of the positioning slot 1041 is an open trapezoidal slot structure that gradually increases towards the side-insertion positioning component 5. Correspondingly, the side-insertion positioning component 5 includes a trapezoidal insertion block 501 that matches the positioning slot 1041, and an insertion block direct drive mechanism 502 that drives the trapezoidal insertion block 501 to approach or move away from the positioning lock block 104.

[0104] The trapezoidal structure design helps reduce the difficulty of alignment between the trapezoidal insert 501 and the positioning slot 1041. Even if there is a slight misalignment, the position can be automatically corrected by the guiding effect of the inclined side of the trapezoidal mechanism.

[0105] Furthermore, each end of the lower side plate 102 is provided with a positioning locking block 104, and the positioning slots 1041 of the two positioning locking blocks 104 are centrally symmetrical about the rotation axis of the flipping frame 1. Therefore, regardless of whether the workpiece 100 is facing up or down, it can be ensured that one positioning locking block 104 is directly opposite the side-insertion positioning component 5, so that the side-insertion positioning component 5 can be laterally inserted into the positioning locking block 104 to lock the flipping frame 1.

[0106] Optionally, the flip drive component 4 includes:

[0107] A fixed upright plate 401 is located on the outside of the flipping frame 1;

[0108] A rotating disk 402 is rotatably mounted on the inner side of the fixed upright plate 401 and is synchronously connected to the tilting frame 1.

[0109] A turntable drive mechanism 403 is installed on the fixed upright plate 401, and the drive end of the turntable drive mechanism 403 is connected to the rotating disk 402 for transmission. The rotating disk 402 drives the tilting frame 1 to tilt up and down relative to the fixed upright plate 401.

[0110] Furthermore, the turntable drive mechanism 403 and the rotating disk 402 can be driven by gears, chains, or belts, etc., and this embodiment does not limit this.

[0111] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A side-insertion positioning online flipping device, characterized in that, include: Flipping rack (1); The conveying device (2) is installed on the lower part of the flipping frame (1) and includes a conveyor belt (201) and a support boss (202) located below the conveyor belt (201). A pressing device (3) is installed on the upper part of the flipping frame (1) and is used to press the workpiece (100) located on the conveyor belt (201) downward in conjunction with the support boss (202). A flip drive assembly (4) is connected to the flip frame (1) at its drive end, and is used to drive the conveying device (2) and the pressing device (3) to flip up and down through the flip frame (1). Side insertion positioning component (5), the side insertion positioning component (5) is located on the side of the flipping frame (1), and has a locking state that extends to insert into the flipping frame (1) to restrict the flipping frame (1) from rotating up and down; and an unlocking state that retracts to disengage from the flipping frame (1).

2. The side-insertion positioning online flipping device according to claim 1, characterized in that, The conveyor belt (201) includes an upper belt section (2011) and a lower belt section (2012) located below the upper belt section (2011) and moving in the opposite direction to the upper belt section (2011). The support boss (202) is located below the upper band segment (2011) and above the lower band segment (2012).

3. The side-insertion positioning online flipping device according to claim 2, characterized in that, The clamping device (3) includes: A lifting pressure plate (301) is located above the upper belt section (2011) and is slidably arranged with the tilting frame (1). The pressure plate direct drive mechanism (302) is installed on the flipping frame (1), and the drive end of the pressure plate direct drive mechanism (302) is connected to the lifting pressure plate (301) to drive the lifting pressure plate (301) to move up and down.

4. The side-insertion positioning online flipping device according to claim 3, characterized in that, The flipping frame (1) includes: The upper horizontal plate (101) has a lifting pressure plate (301) located below the middle position of the upper horizontal plate (101) and slidably connected to the upper horizontal plate (101) in the upper and lower directions. The lower side plate (102) is located below the edge of the upper horizontal plate (101), and the conveyor belt (201) and the support boss (202) are both installed on the inner side of the lower side plate (102). A vertical connecting plate (103) is connected to the driving end of the flipping drive assembly (4) at its middle part. One end of the vertical connecting plate (103) is connected to the upper horizontal plate (101), and the other end is connected to the lower side plate (102).

5. The side-insertion positioning online flipping device according to claim 4, characterized in that, The flipping frame (1) also includes: Positioning lock block (104), the positioning lock block (104) is installed on the outside of the lower side plate (102) and is provided with a positioning slot (1041) for the side insertion positioning component (5) to be inserted.

6. The side-insertion positioning online flipping device according to claim 5, characterized in that, The cross-sectional shape of the positioning slot (1041) is an open trapezoidal slot structure that gradually increases in size toward the side-insertion positioning component (5).

7. The side-insertion positioning online flipping device according to claim 6, characterized in that, The side-insertion positioning component (5) includes a trapezoidal insert (501) that matches the positioning slot (1041) and an insert direct drive mechanism (502) that drives the trapezoidal insert (501) to move closer to or away from the positioning lock block (104).

8. The side-insertion positioning online flipping device according to claim 5, characterized in that, Each end of the lower side plate (102) is provided with a positioning lock block (104), and the positioning slots (1041) of the two positioning lock blocks (104) are centrally symmetrical about the rotation axis of the flipping frame (1).

9. The side-insertion positioning online flipping device according to claim 3, characterized in that, The bottom of the lifting pressure plate (301) is provided with a positioning pin (3011) for inserting the workpiece (100) into the positioning hole (100a).

10. The side-insertion positioning online flipping device according to claim 1, characterized in that, The flip drive component (4) includes: A fixed upright plate (401) is located on the outside of the flipping frame (1); A rotating disk (402) is rotatably mounted on the inner side of the fixed upright plate (401) and is synchronously connected to the flipping frame (1); A turntable drive mechanism (403) is installed on the fixed plate (401), and the drive end of the turntable drive mechanism (403) is connected to the rotating disk (402) for transmission. The rotating disk (402) drives the tilting frame (1) to tilt up and down relative to the fixed plate (401).