A frame stacking device and a stacking method

Abstract

This invention discloses a frame palletizing device and method, comprising: a buffer conveyor line for buffering a predetermined number of frames, a palletizing station at the end of the buffer conveyor line, and a roller conveyor line at the palletizing station; a palletizing and handling mechanism for transporting a row of frames to the palletizing station, and including a drive module, a mounting bracket at the movable end of the drive module, and at least two flipping modules arranged side by side on the mounting bracket; each of the two flipping modules has a pair of flipping clamps and a first motor for driving the flipping clamps to rotate, the two pairs of flipping clamps clamping two sets of materials and simultaneously flipping them around the flipping axis of their respective flipping clamps; and a strip placement unit, located at the palletizing station, which places a separating strip at a predetermined position on the frame layer after the predetermined frame layer is palletized. This invention improves the efficiency of frame palletizing.

Description

Technical Field

[0001] This invention belongs to the field of edge palletizing technology, and in particular relates to an edge palletizing device and a palletizing method. Background Technology

[0002] Most photovoltaic modules on the market are equipped with aluminum frames around their perimeter. The frames are delivered in a stacked state. When stacking and packaging the frames, the frames need to be stacked together with their front and back sides facing each other. Therefore, the frames need to be flipped 180 degrees during stacking, which requires the use of frame stacking equipment.

[0003] Existing patent CN221758893U discloses a strip-shaped frame fastening and palletizing device, which includes a frame conveyor line, frame fastening mechanisms disposed on both sides of the frame conveyor line, a palletizing station disposed at the end of the frame conveyor line, and a palletizing and transporting mechanism for transporting a group of frames from the frame conveyor line to the palletizing station for palletizing. The device conveys frames with their openings facing upwards through the frame conveyor line, and then uses the frame fastening mechanism to lift one of two adjacent frames, flip it 180 degrees, and fasten it onto the other frame to form a frame group with the frames fastened together. Then, the frame conveyor line buffers multiple frame groups into a row, and the palletizing and transporting mechanism transports the entire row of frame groups to the palletizing station for palletizing. In this process, the flipping and transporting of the frames are completed by two mechanisms, and the frames need to be flipped and fastened one by one. The feeding speed of the frame group is slow, which seriously affects the palletizing cycle.

[0004] Therefore, it is necessary to provide a new edge palletizing device and palletizing method to solve the above-mentioned technical problems. Summary of the Invention

[0005] One of the main objectives of this invention is to provide a frame palletizing device that offers a novel structure to address the aforementioned technical problems.

[0006] The present invention achieves the above objective through the following technical solution: a frame palletizing device, comprising:

[0007] A buffer conveyor line buffers a set number of rows of frames. A palletizing station is set at the end of the buffer conveyor line. A roller conveyor line is set at the palletizing station. The roller conveyor line inputs a pallet and outputs palletized frames.

[0008] The palletizing and handling mechanism transports the row of frames to the palletizing station and includes a drive module, a mounting bracket disposed at the movable end of the drive module, and at least two flipping modules arranged side by side on the mounting bracket; each of the two flipping modules has a pair of flipping clamps and a first motor that drives the flipping clamps to rotate, and the two pairs of flipping clamps clamp two sets of materials and flip them around the flipping axis of their respective flipping clamps simultaneously.

[0009] A strip placement unit is set at the palletizing station, and after the set border layer is palletized, an isolation strip is placed at a set position on the border layer.

[0010] Furthermore, a blocking block is provided at the end of the buffer conveyor line.

[0011] Furthermore, the drive module is an XZ axis drive module; the flipping module includes a second motor fixed on the mounting bracket and a movable bracket that moves horizontally driven by the second motor; the movable brackets in the two flipping modules move closer together to clamp materials or separate to release materials under the drive of the second motor; the first motor is fixedly mounted on the movable bracket; the flipping clamp is rotatably mounted on the movable bracket and connected to the rotating end of the first motor.

[0012] Furthermore, it also includes a material distribution conveyor line that is continuously connected to the input side of the buffer conveyor line; the material distribution conveyor line and the buffer conveyor line convey the frame along the X direction; the input side of the material distribution conveyor line is provided with a material distribution module and a correction module.

[0013] Furthermore, the material distribution module includes a front stop assembly and a rear stop assembly located upstream of the front stop assembly and spaced at a predetermined distance; several front stop assemblies and several rear stop assemblies are provided and spaced apart along the Y direction; the front stop assemblies and the rear stop assemblies are spaced apart along the conveying direction of the material distribution conveyor line, and a correction area is formed between them; the correction module is provided on both sides of the correction area in the Y direction to correct the position of the two ends of the frame within the correction area.

[0014] Furthermore, the strip placement unit includes a strip feeding mechanism and a strip clamping and pulling mechanism; the strip feeding mechanism includes a third motor, a first crossbeam that is driven by the third motor to move up and down and extends along the Y direction, and a plurality of strip feeding modules disposed on the first crossbeam; the strip clamping and pulling mechanism includes a fourth motor, a support column that is driven by the fourth motor to move along the X direction, a fifth motor fixed on the support column, a second crossbeam that is driven by the fifth motor to move up and down and extends along the Y direction, and a plurality of strip clamping modules disposed on the second crossbeam.

[0015] Furthermore, one side of the roller conveyor is the buffer conveyor, and the other opposite side is the input / output position; the strip feeding mechanism is located on the input / output side of the roller conveyor.

[0016] Another object of the present invention is to provide a border palletizing method, implemented based on the border palletizing equipment described above, and comprising the following steps:

[0017] S1. A set number of frame edges are buffered on the buffer conveyor line; the pallet is input into place via the roller conveyor line.

[0018] S2. The palletizing and handling mechanism moves above the buffer conveyor line, and the two flipping modules respectively clamp a set of frames and then move them to the palletizing station and place them on the pallet. If multiple handling is required, repeat this step until the palletizing of the front frame layer is completed.

[0019] S3. The palletizing and transporting mechanism returns to the top of the buffer conveyor line. The two flipping modules each clamp a set of frames and then drive each set of frames to flip 180 degrees around the flipping axis of their respective flipping clamps to form inverted frames. Then, they move to the palletizing station and are stacked on the front frame layer, where they are snapped together with the front frame. If multiple transports are required, this step is repeated until the inverted frame layer is stacked.

[0020] S4. Repeat steps S2 to S3 until the stacking border reaches the set height to complete the border stacking.

[0021] S5. The pallet stacking edge is output through the roller conveyor line.

[0022] Furthermore, before the inverted border layer is stacked, the strip placement unit lays a release paper strip on the front border layer; or before the front border layer of the set layer is stacked, the strip placement unit lays a plastic steel strip on the inverted border layer.

[0023] Furthermore, the method for laying the isolation paper strip or plastic steel strip in the strip placement unit is as follows: In the initial state, the first crossbeam and the second crossbeam are located on the input and output sides of the roller conveyor line, and at a height position that avoids the pallet input; during operation, the height of the first crossbeam rises and moves accordingly with the stacking height, the strip feeding module supplies the strip, the strip clamping module clamps the strip head on the strip feeding module and pulls it out by a set length, and the first crossbeam and the second crossbeam descend by a set distance, so that the strip sits on the current stacking edge, and the palletizing and handling machine... The next set of frame pieces is clamped and moved across the second crossbeam to the stacking station for stacking the next layer of frame pieces. After the next layer of frame pieces is stacked, the strip feeding module cuts the strip, and the strip clamping module releases the strip head to complete the strip placement. After the strip is placed, the strip clamping module returns from above the stacked frame pieces to the side of the first crossbeam along with the second crossbeam to perform the next cycle of strip clamping, pulling, and placement. After the overall stacking is completed, the first crossbeam and the second crossbeam rise to a height position that avoids the output of the stacking frame pieces.

[0024] Compared with the prior art, the beneficial effects of the edge palletizing device and palletizing method of the present invention are as follows:

[0025] (1) The original edge fastening mechanism in the palletizing equipment was eliminated, and the edge flipping function was integrated into the palletizing and handling mechanism to form an edge palletizing and handling mechanism with flipping function, which provides the conditions for realizing the palletizing method of "one layer of positive edge layer and one layer of inverted edge layer".

[0026] (2) In the frame palletizing and handling mechanism, at least two flipping modules are arranged side by side. The two flipping modules are used to clamp a row of frames together. When flipping, a row of frames is divided into two and flipped around the rotation axis of each flipping module. This reduces the flipping radius of the entire row of frames, thereby reducing the upward stroke of the palletizing and handling mechanism to lift the entire row of frames to the flipping height. It also reduces the downward stroke during palletizing. This increases the number of frames that can be palletized at one time while reducing the time spent on intermediate transfer actions, thus improving palletizing efficiency in both directions.

[0027] (3) This solution proposes a new method for stacking borders. The original method is to first fasten the front and back borders together to form a border group, and then transport and stack multiple border groups. However, the method adopted in this solution is to stack one layer of front borders, then stack one layer of inverted borders, and so on. During the transport of the stacked inverted borders, the entire row of borders can be rotated 180 degrees synchronously. There is no need to invert each border to form a border group, which eliminates the forming process of the inverted border group in the middle and the setting of the inverted device. The entire row of borders is stacked together inverted, which greatly improves the stacking efficiency. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0029] Figure 2 This is a top view of the structure according to an embodiment of the present invention;

[0030] Figure 3 This is a partial structural diagram of an embodiment of the present invention;

[0031] Figure 4 For this Figure 3 Enlarged structural diagram at point B;

[0032] Figure 5 This is a schematic diagram of the palletizing and handling mechanism in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the movable end of the palletizing and handling mechanism in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the unflipped border on the palletizing and handling mechanism in an embodiment of the present invention;

[0035] Figure 8This is a schematic diagram of the state structure of the flipped frame on the palletizing and handling mechanism in an embodiment of the present invention; Figure 9 This is a schematic diagram of the strip feeding mechanism in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of the strip clamping and pulling mechanism in an embodiment of the present invention;

[0037] The numbers in the image represent:

[0038] 100-Edge palletizing equipment;

[0039] 1-Material distribution conveyor line, 11-Front stop assembly, 111-First cylinder, 112-First baffle, 12-Rear stop assembly, 121-Second cylinder, 122-Second baffle, 13-Correcting module, 131-Third cylinder, 132-Correcting plate, 14-Slide rail;

[0040] 2-Buffer conveyor line;

[0041] 3-Platform palletizing and handling mechanism, 31-XZ axis drive module, 32-Mounting bracket, 33-Tilting module, 331-Modible bracket, 332-Second motor, 333-First motor, 334-Tilting clamp;

[0042] 4-Strip placement unit, 41-Strip feeding mechanism, 411-Third motor, 412-First crossbeam, 413-Strip feeding module, 42-Strip clamping and pulling mechanism, 421-Fourth motor, 422-Support column, 423-Fifth motor, 424-Second crossbeam, 425-Strip clamping module. Detailed Implementation

[0043] Example 1:

[0044] Please refer to Figures 1-10 This embodiment is a frame palletizing device 100, which includes a continuously connected material distribution conveyor line 1 and a buffer conveyor line 2, a palletizing station located at the end of the buffer conveyor line 2, a palletizing and transporting mechanism 3 for transporting the frames on the buffer conveyor line 2 to the palletizing station for palletizing, and a strip placement unit 4 located at the palletizing station. The material distribution conveyor line 1 and the buffer conveyor line 2 transport the frames along the X direction.

[0045] This embodiment designs a new frame stacking method, the general process of which is as follows: the material distribution conveyor line 1 corrects the position of the incoming frame ends and sends them to the buffer conveyor line 2. After the number of frames buffered on the buffer conveyor line 2 reaches the set number, the material distribution conveyor line 1 stops feeding; the stacking and handling mechanism 3 clamps the entire row of frames on the buffer conveyor line 2, and then, depending on whether it needs to be flipped, if it does not need to be flipped, it is directly transported to the stacking station for stacking. If it needs to be flipped, the entire row of frames is flipped and then transported to the stacking station for stacking, forming a stacking method of "one layer of forward-facing frames and one layer of inverted frames"; for each stack of frames or a set number of stacked frames, the strip placement unit 4 places one or more release paper or plastic steel strips at the set position, and repeats the above actions until the stacking reaches the set height.

[0046] Both the material distribution conveyor line 1 and the buffer conveyor line 2 are equipped with servo motors that independently control the operation of their conveyor belts. The input side of the material distribution conveyor line 1 is equipped with a material distribution module and a straightening module 13. The material distribution module is used to divide the incoming material frames into a group according to a set number (e.g., 1 to 5 pieces) and stop them in the working area of ​​the straightening module 13. The straightening module 13 straightens the positions of the two ends of the group of frames and then conveys them to the buffer conveyor line 2 through the material distribution conveyor line 1.

[0047] The material distribution module includes a front stop assembly 11 and a rear stop assembly 12 located upstream of the front stop assembly 11 at a predetermined distance. Several front stop assemblies 11 and 12 are provided, spaced apart along the Y-direction, achieving distributed stopping along the length of the frame. The front stop assembly 11 includes a first cylinder 111 and a first baffle 112 driven by the first cylinder 111 to move up and down. The rear stop assembly 12 includes a second cylinder 121 and a second baffle 122 driven by the second cylinder 121 to move up and down. The front stop assemblies 11 and 12 are spaced apart along the conveying direction of the material distribution conveyor line 1, forming a correction zone between them. The correction module 13 is located on both sides of this correction zone in the Y-direction, correcting the position of the two ends of the frame within the correction zone. The alignment module 13 is adjustablely mounted on a slide rail 14, which extends along the Y direction. By adjusting the position of the alignment module 13 in the Y direction, it can be adapted to the end alignment of various frame lengths, improving the equipment's versatility. The alignment module 13 includes a third cylinder 131 and an alignment plate 132 that is driven by the third cylinder 131 to move in the Y direction.

[0048] The front stop component 11 can release a frame into the material distribution conveyor line 1 at set intervals according to the set rules, so that the frames sent out on the material distribution conveyor line 1 are spaced at a set interval (e.g., 10~40mm).

[0049] A blocking block (not shown in the figure) is provided at the end of the buffer conveyor line 2 to prevent the border from moving further.

[0050] To further improve the palletizing cycle time, the number of frames that the palletizing and handling mechanism 3 can handle at one time can be increased. For example, if it takes three handlings to complete the palletizing of one layer of frames, the number of frames that the palletizing and handling mechanism can handle at one time can be increased to two handlings per layer, or even one handling. However, as the number of frames that the palletizing and handling mechanism 3 can handle at one time increases, the turning radius when the entire row of frames is flipped will increase. The height that the palletizing and handling mechanism 3 needs to rise after gripping the entire row of frames will also increase, resulting in a larger lifting and transfer stroke for flipping. The increased time due to the larger transfer stroke will conversely weaken the efficiency improvement effect brought about by increasing the number of frames handled at one time. Therefore, overall, the improvement in palletizing efficiency is limited. To solve the above technical problems, this embodiment optimizes the design of the palletizing and handling mechanism 3. Instead of flipping the entire row together around a single turning axis, it is optimized to split into two parts and flip around two separate turning axes, thereby reducing the turning radius and also reducing the lifting and transfer stroke for flipping, thus improving palletizing efficiency. Specifically:

[0051] The palletizing and handling mechanism 3 includes an XZ-axis drive module 31, a mounting bracket 32 ​​located at the movable end of the XZ-axis drive module 31, and at least two flipping modules 33 arranged side-by-side on the mounting bracket 32. The two flipping modules 33 can clamp two sets of frame edges and flip them around their respective flipping axes. Compared to a single flipping module clamping the same number of frame edges for overall flipping, this reduces the flipping radius by nearly half, thereby lowering the working height of the frame edges during flipping. This reduces the height travel of the XZ-axis drive module 31 driving the flipping modules 33 to lift the frame edges and the height travel of the palletizing module to lower the palletizing axis, thus increasing the palletizing cycle time and meeting the requirements for higher production efficiency.

[0052] In this embodiment, two flip modules 33 are provided on the mounting bracket 32. In other embodiments, three, four or more flip modules 33 may also be provided.

[0053] The flipping module 33 includes a pair of movable brackets 331 arranged opposite each other on the mounting bracket 32 ​​along the Y direction, and a second motor 332 fixed on the mounting bracket 32 ​​and driving the movable brackets 331 to move horizontally. Each movable bracket 331 is provided with a first motor 333 and a flipping clamping plate 334 driven by the first motor 333 to rotate. The flipping clamping plates 334 on the two movable brackets 331 form a pair of clamping components that clamp the two ends of the frame and flip around the flipping axis O' of the flipping clamping plate 334. The second motor 332 drives the movable brackets 331 to move horizontally, causing the two movable brackets 331 to move closer to each other, thereby driving the flipping clamping plate 334 to clamp the two ends of the frame. The first motor 333 drives the flipping clamping plate 334 to clamp the frame and realize the flipping action.

[0054] In this embodiment, two second motors 332 are provided, each driving one of the two movable supports 331 to move horizontally independently. In other embodiments, only one second motor 332 may be provided, which, together with the transmission assembly, enables the two movable supports 331 to move horizontally synchronously, completing the action of moving closer or apart from each other.

[0055] In this embodiment, the flipping clamp 334 has a set length in the X direction to clamp multiple frames at once, and to clamp multiple frames arranged consecutively. In the two flipping modules 33, the clamping heights of the two pairs of flipping clamps 334 are consistent, so that multiple frames located at the same horizontal height can be clamped. For example, if several frames are cached on the buffer conveyor line 2, the system will divide them into two groups, use the two flipping modules 33 to clamp the two groups of frames, and flip the two groups of frames according to process requirements.

[0056] In this embodiment, the frame is the short frame of the photovoltaic module, and corner brackets are installed at both ends of the short frame. When the flip clamp 334 clamps the two ends of the short frame, it simultaneously holds the right-angled edges of the corner brackets at both ends of the short frame, thereby improving the clamping reliability.

[0057] The strip placement unit 4 can adopt an existing structure, such as the "strip placement unit" in patent CN221758893U. In this embodiment, the strip placement unit 4 includes a strip feeding mechanism 41 and a strip clamping and pulling mechanism 42. The strip feeding mechanism 41 includes a third motor 411, a first crossbeam 412 driven by the third motor 411 to move up and down and extending along the Y direction, and a plurality of strip feeding modules 413 disposed on the first crossbeam 412. The strip clamping and pulling mechanism 42 includes a fourth motor 421, a support column 422 driven by the fourth motor 421 to move along the X direction, a fifth motor 423 fixed on the support column 422, a second crossbeam 424 driven by the fifth motor 423 to move up and down and extending along the Y direction, and a plurality of strip clamping modules 425 disposed on the second crossbeam 424.

[0058] The palletizing station is equipped with a roller conveyor line (not shown in the figure) that transports materials along the X direction. One side of the roller conveyor line is a buffer conveyor line 2, and the opposite side is an input / output position. The pallet enters from the input / output position and is transported to its position via the roller conveyor line. The roller conveyor line is equipped with a positioning module (not shown in the figure) for positioning the pallet. After the edges of the pallet are stacked, it is output via the roller conveyor line.

[0059] In this embodiment, the strip feeding mechanism 41 is located on the input / output side of the roller conveyor. The length of the first crossbeam 412 is greater than the length of the frame, so that after the frame is stacked, the first crossbeam 412 can rise to a high position to avoid the output of the stacked frame. The length of the second crossbeam 424 is greater than the length of the frame, so that when clamping the strip for pulling, it can move from above the stacked frame from the input / output side of the roller conveyor along the X direction to the other opposite side to complete the strip pulling and placement.

[0060] This embodiment implements a border palletizing method based on the above-mentioned border palletizing equipment, which includes the following steps:

[0061] S1. The material distribution conveyor 1 conveys the frame to the buffer conveyor 2. After the number of frames buffered on the buffer conveyor 2 reaches the set quantity, the feeding is paused. After the frames on the buffer conveyor 2 are removed, the material distribution conveyor 1 continues to feed. The system divides the row of frames into two groups of frames. Before the frames are conveyed to the buffer conveyor 2, the end positions of the frames are corrected by the straightening module 13, and the spacing between two adjacent frames is adjusted by the material distribution module.

[0062] S2. During the execution of step S1, the pallet is input into place and positioned by the roller conveyor line;

[0063] S3. The palletizing and handling mechanism 3 moves above the buffer conveyor line 2, and the two flipping modules 33 respectively clamp a set of frames and then move them to the palletizing station and place them on the pallet.

[0064] S4. Repeat step S3 until the stacking of the positive border layer is completed; for example, repeat step S2 once, that is, each border layer needs to be handled twice by the stacking and handling mechanism 3; in this step, "positive border layer" means that all border openings of the layer are facing upwards; if the stacking and handling mechanism 3 can complete the stacking of a single border layer in one handling, then there is no need to repeat step S3.

[0065] S5. The palletizing and handling mechanism 3 returns to the top of the buffer conveyor line 2. The two flipping modules 33 respectively clamp a set of frames and then drive a set of frames to flip 180 degrees around the flipping axis O' of their respective flipping clamps 334 to form an inverted frame. Then, it moves to the palletizing station and is palletized onto the forward frame layer.

[0066] S6. Repeat step S5 until the stacking of the inverted frame layer is completed; for example, repeat step S4 once, that is, each frame layer only needs to be handled twice by the stacking and handling mechanism 3; in this step, "inverted frame layer" means that all the frame openings of the layer are facing down; if the stacking and handling mechanism 3 can complete the stacking of a single frame layer in one handling, then there is no need to repeat step S5.

[0067] S7. Repeat steps S3 to S6 until the stacking border reaches the set height to complete the border stacking.

[0068] S8. The pallet stacking edge is output through the roller conveyor line.

[0069] Before stacking the inverted edge layer, release paper strips are laid on the forward edge layer using strip placement unit 4; or before stacking the forward edge layer of the designated layer, plastic steel tape is laid on the inverted edge layer using strip placement unit 4. The steps for laying the release paper and plastic steel tape in this process include:

[0070] During pallet input, the first crossbeam 412 and the second crossbeam 424 are located on the input / output side of the roller conveyor line and at a height that avoids pallet input. During operation, the first crossbeam 412 and the second crossbeam 424 move to a height position corresponding to the current palletizing height. The strip feeding module 413 supplies strips, and the strip clamping module 425 clamps the strip head on the strip feeding module 413 and pulls it out to a set length (e.g., a whole strip or half a strip). Then, the first crossbeam 412 and the second crossbeam 424 descend together by a set distance, so that the strip sits on the current palletizing edge. The palletizing is then moved. The conveying mechanism 3 clamps the next set of frame pieces and moves them across the second crossbeam 424 to the stacking station to stack the next layer of frame pieces. After the next layer of frame pieces is stacked, the strip feeding module 413 cuts the strip, and the strip clamping module 425 releases the strip head to complete the strip placement. After the strip is placed, the strip clamping module 425 returns from above the stacked frame pieces to the side of the first crossbeam 412 along with the second crossbeam 424 to perform the next cycle of strip clamping, pulling, and placement. After the overall stacking is completed, the first crossbeam 412 and the second crossbeam 424 rise to the height position to avoid the output of the stacked frame pieces.

[0071] In this embodiment, during the strip placement process, the strip feeding module 413 and the strip clamping module 425 first hold both ends of the strip in place on the stacking frame and keep it in place. After the next layer of frames is stacked, the two ends of the strip are cut off and released. Through this set of actions, the strip can be placed accurately and reliably in the designated position, and the strip can be effectively prevented from falling due to airflow generated during the movement of the next layer of frames, thus improving the reliability and safety of strip placement. In addition, during the strip placement process, the first crossbeam 412 rises and falls accordingly with the change of stacking height, so that the strip clamping module 425 does not need to descend a large height each time it clamps the strip head, saving the lifting stroke, improving the strip placement efficiency, and ensuring that the strip length meets the requirements.

[0072] In other embodiments, the strip placement unit 4 may adopt other existing structures, such as the paper strip laying mechanism disclosed in patent CN218859799U and the paper laying mechanism disclosed in patent CN113548484B.

[0073] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this invention, and these all fall within the protection scope of this invention.

Claims

1. A frame palletizing device, characterized in that: It includes: A buffer conveyor line buffers a set number of rows of frames. A palletizing station is set at the end of the buffer conveyor line. A roller conveyor line is set at the palletizing station. The roller conveyor line inputs a pallet and outputs palletized frames. The palletizing and handling mechanism transports the row of frames to the palletizing station and includes a drive module, a mounting bracket disposed at the movable end of the drive module, and at least two flipping modules disposed side by side on the mounting bracket. Each of the two flipping modules has a pair of flipping clamps and a first motor that drives the flipping clamps to rotate. The two pairs of flipping clamps hold two sets of materials and flip them around the flipping axis of their respective flipping clamps. The flipping module includes a second motor fixed on the mounting bracket and a movable bracket that is driven to move horizontally by the second motor. The movable supports in the two flipping modules move closer together to clamp the material or separate to release the material under the drive of the second motor; the first motor is fixedly mounted on the movable support; the flipping clamp is rotatably mounted on the movable support and connected to the rotating end of the first motor; A strip placement unit is set at the palletizing station, and after the set border layer is palletized, an isolation strip is placed at a set position on the border layer; The palletizing method of the edge palletizing equipment includes the following steps: S1. A set number of frame edges are buffered on the buffer conveyor line; the pallet is input into place via the roller conveyor line. S2. The palletizing and handling mechanism moves above the buffer conveyor line, and the two flipping modules respectively clamp a set of frames and then move them to the palletizing station and place them on the pallet. If multiple handling is required, repeat this step until the palletizing of the front frame layer is completed. S3. The palletizing and transporting mechanism returns to the top of the buffer conveyor line. The two flipping modules each clamp a set of frames and then drive each set of frames to flip 180 degrees around the flipping axis of their respective flipping clamps to form inverted frames. Then, they move to the palletizing station and are stacked on the front frame layer, where they are snapped together with the front frame. If multiple transports are required, this step is repeated until the inverted frame layer is stacked. S4. Repeat steps S2 to S3 until the stacking border reaches the set height to complete the border stacking. S5. The pallet stacking edge is output through the roller conveyor line.

2. The edge palletizing equipment as described in claim 1, characterized in that: A blocking block is provided at the end of the buffer conveyor line.

3. The edge palletizing equipment as described in claim 1, characterized in that: The drive module is an XZ axis drive module.

4. The edge palletizing equipment as described in claim 1, characterized in that: It also includes a material distribution conveyor line that is continuously connected to the input side of the buffer conveyor line; the material distribution conveyor line and the buffer conveyor line convey the frame along the X direction; the input side of the material distribution conveyor line is provided with a material distribution module and a correction module.

5. The edge palletizing equipment as described in claim 4, characterized in that: The material distribution module includes a front stop assembly and a rear stop assembly located upstream of the front stop assembly and spaced at a predetermined distance. Several front and rear stop assemblies are provided, spaced apart along the Y-direction. The front and rear stop assemblies are spaced apart along the conveying direction of the material distribution conveyor line, forming a correction zone between them. The correction module is located on both sides of this correction zone in the Y-direction, correcting the position of the two ends of the border within the correction zone.

6. The edge palletizing equipment as described in claim 1, characterized in that: The strip placement unit includes a strip feeding mechanism and a strip clamping and pulling mechanism; the strip feeding mechanism includes a third motor, a first crossbeam that is driven by the third motor to move up and down and extends along the Y direction, and a plurality of strip feeding modules disposed on the first crossbeam; the strip clamping and pulling mechanism includes a fourth motor, a support column that is driven by the fourth motor to move along the X direction, a fifth motor fixed on the support column, a second crossbeam that is driven by the fifth motor to move up and down and extends along the Y direction, and a plurality of strip clamping modules disposed on the second crossbeam.

7. The edge palletizing equipment as described in claim 6, characterized in that: One side of the roller conveyor is the buffer conveyor, and the other opposite side is the input / output position; the strip feeding mechanism is located on the input / output side of the roller conveyor.

8. The edge palletizing equipment as described in claim 1, characterized in that: It also includes laying a release paper strip on the front edge layer by the strip placement unit before stacking the inverted edge layer; or laying a plastic steel strip on the inverted edge layer by the strip placement unit before stacking the front edge layer of the set layer.

9. The edge palletizing equipment as described in claim 8, characterized in that: The strip placement unit includes a strip feeding mechanism and a strip clamping and pulling mechanism; the strip feeding mechanism includes a third motor, a first crossbeam that is driven by the third motor to move up and down and extends along the Y direction, and a plurality of strip feeding modules disposed on the first crossbeam; the strip clamping and pulling mechanism includes a fourth motor, a support column that is driven by the fourth motor to move along the X direction, a fifth motor fixed on the support column, a second crossbeam that is driven by the fifth motor to move up and down and extends along the Y direction, and a plurality of strip clamping modules disposed on the second crossbeam; The method for laying the isolation paper strip or plastic steel strip in the strip placement unit is as follows: In the initial state, the first crossbeam and the second crossbeam are located on the input and output sides of the roller conveyor line, and are positioned at a height that avoids the pallet input; during operation, the height of the first crossbeam rises and moves accordingly with the stacking height, the strip feeding module supplies the strip, the strip clamping module clamps the strip head on the strip feeding module and pulls it out by a set length, and the first crossbeam and the second crossbeam descend by a set distance, so that the strip sits on the current stacking edge, and the stacking and handling mechanism clamps... The next set of frame pieces is moved across the second crossbeam to the stacking station for stacking the next layer of frame pieces. After the next layer of frame pieces is stacked, the strip feeding module cuts the strip, and the strip clamping module releases the strip head to complete the strip placement. After the strip is placed, the strip clamping module returns from above the stacking frame to the side of the first crossbeam along with the second crossbeam to perform the next cycle of strip clamping, pulling, and placement. After the overall stacking is completed, the first crossbeam and the second crossbeam rise to the height position to avoid the output of the stacking frame.

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