A zigzag return board machine

Abstract

The utility model discloses a zigzag return plate machine, including base, swing arm, balance arm and loading support, and base, swing arm, balance arm and loading support enclose parallelogram's deformation cavity together. Compared with the return plate machine structure in prior art, this scheme cancels the tank chain translation machine of very high failure rate, only relies on the conveying capacity of original conveying line to realize the in and out of tooling plate in return plate machine, makes the transfer process of tooling plate reduce the time of tooling plate in and out tank chain bearing area, improves the overall efficiency, can also save maintenance time and cost. In addition, the return plate machine encloses parallelogram's deformation cavity in the main view direction, can flexibly change the height position of loading support on the mechanical structure, and the movement process is smooth, does not have the generation of horizontal, transverse hunting, is favorable for promoting the work stability of return plate machine, reduces the damage risk of equipment structure.

Description

Technical Field

[0001] This utility model relates to the technical field of building ceramics production equipment, and in particular to a zigzag-shaped return plate machine. Background Technology

[0002] In the large-scale production system of architectural ceramics, the tooling plate, as the core carrier for the ceramic blank to complete multiple processes such as forming, drying, and sintering, directly determines the production cycle of the entire line through its circulation and conveying efficiency. The return plate machine, as a key piece of equipment in the tooling plate circulation system, mainly undertakes the function of "reversely conveying the unloaded empty tooling plate from the downstream process to the upstream loading station." It is the core hub for realizing the closed-loop circulation of tooling plates and ensuring production continuity, and is widely used in automated production lines for architectural ceramics such as ceramic tiles and terracotta panels.

[0003] The existing return plate machine generally includes a lifting platform, a tank chain translation machine, a lifting cylinder, and a vertical guide column. The lifting cylinder and lifting platform enable the installation and vertical lifting of the tank chain translation machine at the ends of the upper and lower conveyor lines in the assembly line operation. At the same time, the forward and reverse rotation of the tank chain driven by the motor enables the tooling plate to enter and exit at the end of the conveyor line.

[0004] Because the translation machine needs to move the tooling plate in and out, the entry and exit areas cannot be obstructed by other structural components. This necessitates that the linear bearings and guide shafts be positioned on the unobstructed side of the equipment. This creates a lever mechanism at the furthest point between the loading surface of the translation machine and the vertical guide column (including the linear bearing). The greater the weight of the load, the greater the force on the vertical guide column and linear bearing—actually several times the weight of the load. Since the linear bearings and vertical guide columns are precision-fitted, with point contact between the bearing rollers and the vertical guide column surfaces, severe surface wear occurs when the external force exceeds the allowable force of the rollers or vertical guide column material. This can even cause scraping of the vertical guide column surface, damaging the surface of the guide column or rollers, thus restricting or directly blocking the entire translation machine's lifting and lowering process. Each maintenance requires replacing the linear bearings and guide shafts, which is expensive and time-consuming and labor-intensive to disassemble and assemble.

[0005] Furthermore, when the forward edge of the tooling plate contacts the rotating arc surface of the tank chain, the tooling plate will be subjected to a vertical jumping force. The torque generated by this jumping increases the leverage force mentioned above, further increasing the probability of damage to the linear bearings and vertical guide posts. Moreover, the tank chain requires a motor to drive it in both forward and reverse directions. If the chain tension is insufficient, the chain on the upper layer of the drive pulley may stack or become stuck between the teeth, causing the chain to jam, the motor reducer to be overloaded and damaged, etc., requiring repairs and increasing costs.

[0006] In summary, existing reflow machines for architectural ceramics production suffer from structural defects such as "easily damaged components, frequent repairs, and high maintenance costs," making them unsuitable for the large-scale production needs of architectural ceramics and a key bottleneck restricting production line efficiency improvement and cost control. Currently, although the industry has attempted improvements through simple methods such as "increasing motor power and replacing chains with thicker ones," these have not fundamentally solved the core problem. Therefore, developing a highly reliable, low-maintenance-cost reflow machine structure has become a pressing technical challenge in the field of architectural ceramics equipment. Utility Model Content

[0007] The purpose of this invention is to propose a zigzag reflow machine, which has a simple structure and reliable performance, and helps to reduce the number of repairs and maintenance costs of the reflow machine, thereby overcoming the shortcomings of the prior art.

[0008] To achieve this objective, the present invention adopts the following technical solution: A zigzag return plate machine includes a base, a swing arm, a counterweight arm, and a loading bracket. The ends of the swing arm and the counterweight arm are oscillatingly mounted on the base via bearing seats, and the swing axes of the swing arm and the counterweight arm are parallel to each other. The end of the loading bracket away from the tooling plate is hinged to the top of the counterweight arm, and the end of the loading bracket near the tooling plate is used to support the tooling plate. A connecting end is provided in the middle of the loading bracket, and the connecting end is hinged to the top of the swing arm. The loading bracket is used to extend below the conveying surface of the tooling plate conveyor line. In the horizontal projection direction of the main view, the base, the swing arm, the balance arm, and the loading bracket together form a parallelogram-shaped deformation cavity.

[0009] Preferably, the two ends of the swing arm are oscillatingly mounted on the base via bearing seats, and in the vertical projection direction, the line connecting the two ends of the swing arm is perpendicular to the axis of the balance arm itself. The top two sides of the swing arm are respectively hinged to two opposite connecting ends in the loading bracket via connecting bearings.

[0010] Preferably, the loading bracket includes a connecting rod, a main shaft, and a loading fork that are connected in sequence and relatively stationary; The extension direction of the main shaft is parallel to the swing axis of the swing arm, and the two ends of the main shaft are the connecting ends. The top two sides of the swing arm are respectively hinged to the two ends of the main shaft through connecting bearings. The extension direction of the connecting rod is perpendicular to the extension direction of the main shaft, and one end of the connecting rod is hinged to the top of the balance arm, while the other end of the connecting rod is connected to the middle of the main shaft. The extension direction of the loading fork is parallel to the extension direction of the connecting rod. The loading fork is installed at both ends of the main shaft and is used to load tooling plates.

[0011] Preferably, the loading bracket further includes a positioning detector, which is mounted on the loading fork and is used to detect the positioning of the tooling plate on the loading fork.

[0012] Preferably, the return plate machine further includes a drive cylinder, the drive cylinder including a cylinder body and a piston rod, the piston rod being telescopically mounted on the cylinder body; The end of the cylinder body away from the piston rod is oscillatingly mounted on the base via a bearing seat, and the end of the piston rod is connected to the swing arm; The drive cylinder is used to drive the swing arm to swing.

[0013] Preferably, the return plate machine further includes a transmission rod, which is installed on the side wall of the swing arm. The end of the piston rod is rotatably fitted onto the end of the transmission rod, and the drive cylinder drives the swing arm to swing through the transmission rod.

[0014] Preferably, the return plate machine further includes a limiting plate, which is disposed between the swing arm and the drive cylinder; the limiting plate has a limiting groove on its surface, and the end of the transmission rod passes through the limiting groove and is movably connected to the end of the piston rod; The limiting groove is in the shape of an arc, and the center of the arc coincides with the axis of the swing arm's swing shaft. The transmission rod slides along the limiting groove.

[0015] Preferably, one of the driving cylinders and one of the limiting plates constitute a set of driving limiting components, and two sets of driving limiting components are provided, with the two sets of driving limiting components located on both sides of the end of the swing arm respectively. A set of the drive limiting components is installed correspondingly to one end of the transmission rod; Another set of the drive limiting components is installed correspondingly to the other end of the transmission rod.

[0016] Preferably, two positioning detectors are provided, and the two positioning detectors are installed at intervals on the outer edge of the loading fork along the conveying direction of the tooling plate; The drive cylinder is electrically connected to the positioning detector.

[0017] The technical solution provided by this utility model can include the following beneficial effects: 1. Compared to the existing return plate machine structure, this solution eliminates the highly faulty tank chain translation machine. It utilizes the existing conveyor line's capacity to move the tooling plates in and out of the return plate machine, reducing the time spent on the tooling plates moving in and out of the tank chain's carrying area, thus improving overall efficiency. Furthermore, by reducing the number of motors driving the tank chain, energy consumption is also reduced. Additionally, eliminating the original translation machine and the high-failure-rate tank chain reduces maintenance requirements, saving maintenance time and costs.

[0018] 2. The rewinding machine of this solution has a deformation cavity that forms a parallelogram in the main view direction. In terms of mechanical structure, it can flexibly change the height position of the loading bracket. The movement process is smooth and there is no horizontal or lateral movement, which helps to improve the working stability of the rewinding machine and reduce the risk of damage to the equipment structure. Attached Figure Description

[0019] Figure 1 This is a front view of a zigzag return plate machine according to this utility model.

[0020] Figure 2 This is a top view of a zigzag return plate machine according to this utility model.

[0021] Figure 3 This is a side view of a zigzag return plate machine according to this utility model.

[0022] Figure 4 This is a schematic diagram illustrating the application of a zigzag return plate machine according to this utility model.

[0023] Figure 5 This is a schematic diagram of the working process of a zigzag return plate machine according to this utility model.

[0024] Among them: upper conveyor line 1, lower conveyor line 2; Return plate machine 3, deformation cavity 301, base 31, swing arm 32, balance arm 33, loading bracket 34, connecting rod 341, main shaft 342, loading fork 343, position detector 344, drive cylinder 35, cylinder body 351, piston rod 352, transmission rod 36, limit plate 37, limit groove 371; Tooling plate 4. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] This technical solution provides a zigzag return plate machine, including a base 31, a swing arm 32, a balance arm 33, and a loading bracket 34; the ends of the swing arm 32 and the balance arm 33 are respectively oscillatingly mounted on the base 31 via bearing seats, and the swing axes of the swing arm 32 and the balance arm 33 are parallel to each other; the end of the loading bracket 34 away from the tooling plate 4 is hinged to the top of the balance arm 33, the end of the loading bracket 34 near the tooling plate 4 is used to support the tooling plate 4, a connecting end is provided in the middle of the loading bracket 34, and the connecting end is hinged to the top of the swing arm 32; the loading bracket 34 is used to extend below the conveying surface of the tooling plate conveyor line. In the horizontal projection direction of the main view, the base 31, the swing arm 32, the balance arm 33 and the loading bracket 34 together form a parallelogram-shaped deformation cavity 301.

[0027] To reduce the number of repairs and maintenance costs of the rework machine, this technical solution proposes a zigzag-shaped rework machine, such as... Figure 1-3 As shown.

[0028] Compared to the existing return plate machine structure, this solution eliminates the tank chain translation machine, which has a very high failure rate. The loading bracket 34 extends below the conveyor surface of the tooling plate conveyor line, relying on the existing conveyor line's capacity to move the tooling plate 4 in and out of the return plate machine 3. This reduces the time it takes for the tooling plate 4 to enter and exit the tank chain carrying area, improving overall efficiency. Furthermore, by reducing the number of motors driving the tank chain, energy consumption is also reduced. Moreover, eliminating the original translation machine removes the high-failure-rate tank chain (including the aluminum alloy groove of the sheathed chain, wear-resistant strips supporting the chain, and other small accessories) and its associated parts, reducing a maintenance target and saving maintenance time and costs.

[0029] Furthermore, the return plate machine 3 of this solution has a deformation cavity 301 that forms a parallelogram in the main view direction. In terms of mechanical structure, it can flexibly change the height position of the loading bracket 34. The movement process is smooth and there is no horizontal or lateral movement, which helps to improve the working stability of the return plate machine 3 and reduce the risk of damage to the equipment structure.

[0030] In a preferred embodiment, since the rewinding machine 3 of this solution has a simple structure, the extra space can be used to make the main load-bearing structural components use steel structural materials of larger specifications and sizes, thereby increasing the overall load and deformation resistance of the rewinding machine. Each movable joint can also use conventional bearings with high load capacity, which not only increases the overall load resistance of the rewinding machine, but also increases the life of the load-bearing components, further reducing the number of repairs and maintenance costs.

[0031] Furthermore, the return plate machine of this solution can be applied to a tooling plate circulation system, which includes a conventional upper conveyor line 1, a lower conveyor line 2, and the return plate machine 3 of this solution. The upper conveyor line 1 is erected above the lower conveyor line 2, and the conveying direction of the upper conveyor line 1 is opposite to that of the lower conveyor line 2. There are two return plate machines 3, which are located at opposite ends of the lower conveyor line 2. One return plate machine 3 is used to convey the tooling plate 4 located at the unloading end of the upper conveyor line 1 to the loading end of the lower conveyor line 2, and the other return plate machine 3 is used to convey the tooling plate 4 located at the unloading end of the lower conveyor line 2 to the loading end of the upper conveyor line 1. The return board machine 3 includes at least a first state and a second state: When the return plate machine 3 is in the first state, the loading surface of the loading bracket 34 is located below the conveying surface of the upper conveyor line 1; When the return plate machine 3 is in the second state, the loading surface of the loading bracket 34 is located below the conveying surface of the lower conveyor line 2.

[0032] Taking the example of the return plate machine 3 conveying the tooling plate 4 located at the unloading end of the upper conveyor line 1 to the loading end of the lower conveyor line 2, the explanation will proceed accordingly. Other actions are similar. Figure 4-5 As shown, the workflow of this solution is as follows: The return plate machine 3 swings to the first state to wait for the tooling plate 4 to be fed. The tooling plate 4 to be unloaded is transported to the loading surface of the loading bracket 34 of the return plate machine 3 through the upper conveyor line 1. After the tooling plate 4 is in position by the return plate machine 3, the swing arm 32 and the balance arm 33 of the return plate machine 3 swing away from the upper conveyor line 1, and the tooling plate 4 is removed from the conveying surface of the upper conveyor line 1. When the swing arm 32 and the balance arm 33 swing to the point where the loading surface of the loading bracket 34 is below the conveying surface of the lower conveyor line 2, the tooling plate 4 is disengaged from the loading surface of the loading bracket 34 and is supported by the conveying surface of the lower conveyor line 2, so that the tooling plate 4 can be conveyed to the feeding end of the upper conveyor line 1 under the drive of the lower conveyor line 2. Finally, another return plate machine 3 transports the tooling plate 4 located at the unloading end of the lower conveyor line 2 to the loading end of the upper conveyor line 1, and so on in a repeated cycle.

[0033] During the process of tooling plate 4 entering / exiting the loading surface of return plate machine 3, the two do not come into contact. The tooling plate 4 is driven in / out entirely by the conveying capacity of the conveyor line itself, without external force influence, and there is no displacement of the tooling plate 4 position. Moreover, the loading surface of return plate machine 3 is below the conveying surface of the conveyor line, and no other auxiliary facilities are needed for transition, which can also achieve accurate original positioning of tooling plate 4. This greatly improves the accuracy of tooling plate 4 transfer to the correct position, and reduces the probability of tooling plate 4 getting stuck at the connection point of the conveyor line entrance to near zero. This avoids the positional displacement of tooling plate caused by uneven friction between the tank chain and the tooling plate during the entry and exit process of traditional return plate machines. In addition, if the circulation system is blocked due to frequent jamming at the transition point between the entry and exit transfer machine and the transfer machine and the conveyor line, manual intervention is required to restore normal operation. Therefore, the smooth transfer also saves maintenance time.

[0034] To further explain, the two ends of the swing arm 32 are oscillatingly mounted on the base 31 via bearing seats, and in the vertical projection direction, the line connecting the two ends of the swing arm 32 is perpendicular to the axis of the balance arm 33 itself. The top two sides of the swing arm 32 are respectively hinged to two opposite connecting ends in the loading bracket 34 via connecting bearings.

[0035] like Figure 2 As shown, this helps the loading bracket 34, the swing arm 32, and the balance arm 33 to form a stable triangular structure in the vertical projection direction, which is more conducive to ensuring the stability of the return plate machine during the transfer process and improving the overall load capacity and resistance to variable loads of the equipment.

[0036] To further explain, the loading bracket 34 includes a connecting rod 341, a main shaft 342, and a loading fork 343 that are connected in sequence and relatively stationary; The extension direction of the main shaft 342 is parallel to the swing axis of the swing arm 32, and the two ends of the main shaft 342 are the connecting ends. The top two sides of the swing arm 32 are respectively hinged to the two ends of the main shaft 342 through connecting bearings. The extension direction of the connecting rod 341 is perpendicular to the extension direction of the main shaft 342, and one end of the connecting rod 341 is hinged to the top end of the balance arm 33, while the other end of the connecting rod 341 is connected to the middle part of the main shaft 342. The extension direction of the loading fork 343 is parallel to the extension direction of the connecting rod 341. The loading fork 343 is installed at both ends of the main shaft 342 and is used to load the tooling plate 4.

[0037] Furthermore, the loading bracket 34 of this solution includes a connecting rod 341, a main shaft 342, and a loading fork 343 that are connected in sequence and relatively stationary. By optimizing the structure of the loading bracket 34, it is beneficial to further improve the load capacity of the loading bracket 34 and meet the transfer requirements of the circulation system for various types of tooling plates.

[0038] Furthermore, the loading bracket 34 also includes a positioning detector 344, which is mounted on the loading fork 343 and is used to detect the positioning of the tooling plate 4 on the loading fork 343.

[0039] Furthermore, the loading bracket 34 of this solution is equipped with a positioning detector 344, so that technicians can promptly detect any emergencies during the circulation process and improve the controllability of the circulation system.

[0040] Furthermore, the return plate machine 3 also includes a drive cylinder 35, which includes a cylinder body 351 and a piston rod 352, and the piston rod 352 is telescopically mounted on the cylinder body 351. The end of the cylinder body 351 away from the piston rod 352 is oscillatingly mounted on the base 31 via a bearing seat, and the end of the piston rod 352 is connected to the swing arm 32. The drive cylinder 35 is used to drive the swing arm 32 to swing.

[0041] In a preferred embodiment of this technical solution, the swing arm 32 is driven by a drive cylinder 35 instead of the roller guide column that requires careful handling in the existing return plate machine. The moving parts of the equipment are only the cylinder, the swing arm 32, and the four joints of the balance arm 33. Therefore, there is a lot of room for the installation of connecting parts (such as bearing seats, connecting bearings, etc.) in the equipment, which helps to save the space occupied by the equipment.

[0042] In one specific embodiment, larger-sized connecting components can be used to increase load-bearing capacity and reduce the probability of stress-induced wear, thereby increasing the lifespan of the connecting components.

[0043] Furthermore, the return plate machine 3 also includes a transmission rod 36, which is installed on the side wall of the swing arm 32. The end of the piston rod 352 is rotatably fitted onto the end of the transmission rod 36, and the drive cylinder 35 drives the swing arm 32 to swing through the transmission rod 36.

[0044] Furthermore, the return plate machine 3 also includes a limiting plate 37, which is disposed between the swing arm 32 and the drive cylinder 35; the limiting plate 37 has a limiting groove 371 on its surface, and the end of the transmission rod 36 passes through the limiting groove 371 and is movably connected to the end of the piston rod 352. The limiting groove 371 is in the shape of an arc, and the center of the arc coincides with the axis of the swing shaft of the swing arm 32. The transmission rod 36 slides along the limiting groove 371.

[0045] As a preferred embodiment, the drive cylinder 35 drives the swing arm 32 to swing via the transmission rod 36. At the same time, a limiting plate 37 is added to limit the swing stroke of the swing arm 32 by limiting the swing stroke of the transmission rod 36, thereby improving the reliability and accuracy of the transfer process of the return plate machine 3.

[0046] To further explain, the driving cylinder 35 and the limiting plate 37 are a set of driving limiting components. There are two sets of driving limiting components, and the two sets of driving limiting components are respectively located on both sides of the end of the swing arm 32. One set of the drive limiting components is installed correspondingly to one end of the transmission rod 36; Another set of the drive limiting components is installed correspondingly to the other end of the transmission rod 36.

[0047] This can further enhance the load capacity of the return board machine 3.

[0048] To further explain, two positioning detectors 344 are provided, and the two positioning detectors 344 are installed at intervals on the outer edge of the loading fork 343 along the conveying direction of the tooling plate 4; The drive cylinder 35 is electrically connected to the position detector 344.

[0049] In another preferred embodiment of this technical solution, the electrical connection between the drive cylinder 35 and the position detector 344 helps to improve the smoothness of the return plate machine 3's operation, thereby improving the circulation efficiency of the circulation system.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0052] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0053] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0054] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0055] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0056] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A zigzag-shaped return plate machine, characterized in that: The system includes a base, a swing arm, a counterweight arm, and a loading bracket. The ends of the swing arm and the counterweight arm are oscillatingly mounted on the base via bearing seats, and the swing axes of the swing arm and the counterweight arm are parallel to each other. The end of the loading bracket away from the tooling plate is hinged to the top of the counterweight arm, and the end of the loading bracket near the tooling plate is used to support the tooling plate. A connecting end is provided in the middle of the loading bracket, and the connecting end is hinged to the top of the swing arm. The loading bracket is used to extend below the conveying surface of the tooling plate conveyor line. In the horizontal projection direction of the main view, the base, the swing arm, the balance arm, and the loading bracket together form a parallelogram-shaped deformation cavity.

2. The zigzag return plate machine according to claim 1, characterized in that: The two ends of the swing arm are oscillatingly mounted on the base via bearing seats, and in the vertical projection direction, the line connecting the two ends of the swing arm is perpendicular to the axis of the balance arm itself. The top two sides of the swing arm are respectively hinged to two opposite connecting ends in the loading bracket via connecting bearings.

3. The zigzag return plate machine according to claim 2, characterized in that: The loading support includes a connecting rod, a main shaft, and a loading fork that are connected in sequence and relatively stationary; The extension direction of the main shaft is parallel to the swing axis of the swing arm, and the two ends of the main shaft are the connecting ends. The top two sides of the swing arm are respectively hinged to the two ends of the main shaft through connecting bearings. The extension direction of the connecting rod is perpendicular to the extension direction of the main shaft, and one end of the connecting rod is hinged to the top of the balance arm, while the other end of the connecting rod is connected to the middle of the main shaft. The extension direction of the loading fork is parallel to the extension direction of the connecting rod. The loading fork is installed at both ends of the main shaft and is used to load tooling plates.

4. A zigzag return plate machine according to claim 3, characterized in that: The loading bracket also includes a positioning detector, which is mounted on the loading fork and is used to detect the positioning of the tooling plate on the loading fork.

5. A zigzag return plate machine according to claim 4, characterized in that: The return plate machine also includes a drive cylinder, which includes a cylinder body and a piston rod, and the piston rod is telescopically mounted on the cylinder body; The end of the cylinder body away from the piston rod is oscillatingly mounted on the base via a bearing seat, and the end of the piston rod is connected to the swing arm; The drive cylinder is used to drive the swing arm to swing.

6. A zigzag return plate machine according to claim 5, characterized in that: The return plate machine also includes a transmission rod, which is installed on the side wall of the swing arm. The end of the piston rod is rotatably fitted onto the end of the transmission rod, and the drive cylinder drives the swing arm to swing through the transmission rod.

7. A zigzag return plate machine according to claim 6, characterized in that: The return plate machine also includes a limiting plate, which is disposed between the swing arm and the drive cylinder; the limiting plate has a limiting groove on its surface, and the end of the transmission rod passes through the limiting groove and is movably connected to the end of the piston rod. The limiting groove is in the shape of an arc, and the center of the arc coincides with the axis of the swing arm's swing shaft. The transmission rod slides along the limiting groove.

8. A zigzag return plate machine according to claim 7, characterized in that: The driving cylinder and the limiting plate constitute a set of driving limiting components. Two sets of driving limiting components are provided, and the two sets of driving limiting components are respectively located on both sides of the end of the swing arm. A set of the drive limiting components is installed correspondingly to one end of the transmission rod; Another set of the drive limiting components is installed correspondingly to the other end of the transmission rod.

9. A zigzag return plate machine according to claim 5, characterized in that: Two positioning detectors are provided, and the two positioning detectors are installed at intervals on the outer edge of the loading fork along the conveying direction of the tooling plate; The drive cylinder is electrically connected to the positioning detector.

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