Automatic tray changing equipment and roll welding system

Abstract

The present application relates to an automatic tray replacement device and a roll welding system. The roll welding system comprises a roll welding machine and an automatic tray replacement device arranged at a tray replacement station. The automatic tray replacement device comprises a tray storage device and a conveying device arranged at the tray storage station. The tray storage device is used to store empty trays and full trays. The conveying device comprises a clamping mechanism. The clamping mechanism has a clamping gap with variable size. The conveying device can clamp an empty tray or a full tray in the clamping gap and can travel back and forth between the tray replacement station and the tray storage station so as to automatically supply full trays to the roll welding machine and recover empty trays from the roll welding machine. Compared with the existing tray replacement method, by using the automatic tray replacement device provided by the present application to replace the tray, no manual intervention is required during the entire tray replacement process, thereby improving the tray replacement efficiency, reducing the labor intensity of workers, and avoiding the occurrence of safety hazards.

Description

Technical Field

[0001] The present application relates to the technical field of roll welding, and in particular to an automatic tray replacement device and a roll welding system. Background Art

[0002] The roll welding machine is an important machine used to form the steel skeleton of cement products (such as drainage pipes, pipe piles for high-rise buildings and some chemical products). Its working principle is to spirally wind the steel bars wound on the material tray onto multiple main bars (also called main bars or steel bars) arranged along the axis, and then move the roll welding electrode to weld the steel bars to the main bars to complete the roll welding operation.

[0003] In the process of replacing the material tray of a conventional roll welding machine, the empty material tray needs to be unloaded and then replaced with a full material tray with steel bars; however, due to the heavy weight of the full material tray, the existing material tray replacement method requires the use of a crane in the factory to lift the material tray, and then manually align the material tray installation holes, and finally the workers use screws to lock the material tray. In this process, manual intervention is required many times, the degree of automation is low, resulting in low replacement efficiency, high labor intensity for workers, and safety hazards during the material tray replacement process. Utility Model Content

[0004] Based on this, it is necessary to provide an automatic tray changing device and a rolling welding system including the automatic tray changing device that can solve the above problems, in order to address the low degree of automation in the existing tray changing method, which leads to low tray changing efficiency, high labor intensity for workers and safety hazards when changing trays.

[0005] According to one aspect of the present application, there is provided an automatic tray replacement device for supplying full trays to a seam welding machine and recovering empty trays from the seam welding machine, the automatic tray replacement device comprising:

[0006] A tray storage device is disposed on a tray storage station, and the tray storage device is used to store the empty trays and the full trays;

[0007] A handling device, comprising a clamping mechanism, wherein the clamping mechanism has a clamping gap of variable size, and the handling device can move back and forth between a tray changing station and the tray storage station;

[0008] The clamping mechanism is capable of clamping the empty tray in the clamping gap from the seam welder when the transport device is located at the tray replacement station, and unloading the empty tray from the clamping gap to the tray storage device when the transport device moves to the tray storage station;

[0009] The clamping mechanism can also clamp the full tray from the tray storage device in the clamping gap when the transport device is located at the tray storage station, and unload the full tray from the clamping gap to the rolling welder when the transport device returns to the tray changing station.

[0010] In one of the embodiments, the automatic tray changing equipment also includes a conveying track, which passes through the tray changing station and the tray storage station in sequence along a conveying direction, and the handling device can be movably arranged on the conveying track and can move along the conveying track.

[0011] In one embodiment, the handling device further comprises a bearing seat, the bearing seat is slidably disposed on the conveying track, and the clamping mechanism is slidably connected to the bearing seat so as to be able to move relative to the bearing seat along a transfer direction perpendicular to the conveying direction;

[0012] When the transport device is located at the tray changing station, the clamping mechanism can approach or move away from the seam welder along the transfer direction, or when the transport device is located at the tray storage station, the clamping mechanism can approach or move away from the tray storage device along the transfer direction.

[0013] In one of the embodiments, the clamping mechanism includes a support assembly and a clamping jaw, a support block is provided at the bottom of the support assembly, and the clamping jaw is liftably arranged at the top of the support assembly to form the clamping gap with variable size together with the support block.

[0014] In one embodiment, there are at least two support blocks, and all the support blocks and the clamping jaws are spaced apart along a circumferential direction.

[0015] In one embodiment, the support assembly includes a support base slidably disposed on the bearing base and a lifting base plate liftably connected to the support base, the support block is disposed at the bottom of the lifting base plate, and the clamp is liftably disposed at the top of the lifting base plate.

[0016] In one of the embodiments, the tray storage device includes a first storage mechanism and a second storage mechanism adjacent to each other along the conveying direction, one of the first storage mechanism and the second storage mechanism is used to store the empty trays, and the other is used to store the full trays.

[0017] In one embodiment, the first storage mechanism and the second storage mechanism respectively include a base and a hopper disposed on the base, and the hopper has a fence, and the fence encloses a receiving space for receiving a tray.

[0018] In one embodiment, the hopper is slidably arranged on the base so as to be able to move relative to the base along a transfer direction perpendicular to the conveying direction; when the transport device moves to the tray storage station, the hopper of the first storage mechanism or the hopper of the second storage mechanism can be close to or away from the transport device.

[0019] According to another aspect of the present application, a roll welding system is provided, comprising a roll welding machine and the automatic tray changing device as described in any of the above schemes, wherein the roll welding machine is arranged at the tray changing station.

[0020] The above-mentioned automatic tray replacement equipment and roll welding system are configured to provide a conveying device capable of moving back and forth between the tray replacement station and the tray storage station in the automatic tray replacement equipment, and to provide a clamping mechanism in the conveying device, wherein the clamping mechanism has a clamping gap with a variable size, so that when the conveying device is located at the tray replacement station, the clamping mechanism can clamp an empty tray from the roll welding machine in the clamping gap, and unload the empty tray from the clamping gap to the tray storage device when the conveying device moves to the tray storage station; and when the conveying device is located at the tray storage station, the clamping mechanism can clamp a full tray from the tray storage device in the clamping gap, and unload the full tray from the clamping gap to the roll welding machine when the conveying device returns to the tray replacement station, thereby realizing automatic tray replacement. Compared with the existing tray replacement method, no manual intervention is required in the entire tray replacement process, and the degree of automation is higher, thereby improving the tray replacement efficiency, reducing the labor intensity of workers, and avoiding the occurrence of safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Axis side view of a seam welding system provided in one embodiment of the present application Figure 1 .

[0022] Figure 2 Axis side view of a seam welding system provided in one embodiment of the present application Figure 2 .

[0023] Figure 3 An axial view of a first storage mechanism or a second storage mechanism in an automatic tray changing device provided in one embodiment of the present application.

[0024] Figure 4 Axial side view of a handling device in an automatic tray replacement device provided in an embodiment of the present application Figure 1 (without clamping the tray).

[0025] Figure 5 Axial side view of a handling device in an automatic tray replacement device provided in an embodiment of the present application Figure 2 (Clamp holding tray).

[0026] Figure 6 Axial side view of a handling device in an automatic tray replacement device provided in an embodiment of the present application Figure 3 .

[0027] Description of reference numerals:

[0028] 10. Roll welding system; 101. Tray changing station; 102. Tray storage station; 100. Roll welding machine; 200. Automatic tray changing equipment; 210. Tray storage device; 211. First storage mechanism; 2111. Base; 2112. Hopper; 2113. Fence; 2113a. Accommodating space; 212. Second storage mechanism; 220. Transport device; 221. Bearing seat; 222. Clamping mechanism; 222a. Clamping gap; 2221. Support assembly; 2221a. Support seat; 2221b. Lifting base plate; 2222. Clamp; 2223. Support block; 230. Conveying track; 30. Tray. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or part referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two parts or the interaction relationship between two parts, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another piece, it may be directly on the other piece or there may be a central piece. If an element is considered to be "connected to" another element, it may be directly connected to the other piece or there may be a central piece at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0035] See also Figure 1 and Figure 2 , Figure 1 and Figure 2 The structural schematic diagram of the roll welding system 10 in one embodiment of the present application is shown. The roll welding system 10 provided in one embodiment of the present application includes a roll welding machine 100 and a tray automatic replacement device 200, wherein the roll welding machine 100 is arranged on a tray replacement station 101, and is used to spirally wind and weld the steel bars wound on the tray 30 on a steel cage composed of a plurality of main bars to produce cage bars for preparing concrete pipe piles, and the tray automatic replacement device 200 is used to supply a full tray 30 wound with steel bars to the roll welding machine 100, and to recover an empty tray 30 from the roll welding machine 100.

[0036] In some embodiments, the automatic tray replacement device 200 includes a tray storage device 210 and a handling device 220. The tray storage device 210 is arranged on a tray storage station 102, and is used to store empty trays and full trays; the handling device 220 can travel back and forth between the tray replacement station 101 and the tray storage station 102. On the one hand, the handling device 220 can unload the empty tray from the roll welding machine 100 at the tray replacement station 101 and transport it to the tray storage station 102, and then place the empty tray in the tray storage device 210 at the tray storage station 102; on the other hand, the handling device 220 can transport the full tray from the tray storage station 102 to the tray replacement station 101, and unload the full tray to the roll welding machine 100, thereby completing the automatic replacement of the tray 30.

[0037] Optionally, see Figure 1 and Figure 2 The tray changing station 101 and the tray storage station 102 are arranged at intervals along a conveying direction (the X direction shown in the figure), and the handling device 220 can be movably installed on a conveying track 230. The conveying track 230 passes through the tray changing station 101 and the tray storage station 102 in sequence along the conveying direction, so that the handling device 220 can be controlled to move along the conveying track 230 under the drive of a driving source such as a motor, so as to be able to travel back and forth between the tray changing station 101 and the tray storage station 102, thereby ensuring that the handling device 220 moves along a predetermined path, and then can transport the full tray to a preset position (i.e., the tray changing station 101), and can recover the empty tray to a preset position (i.e., the tray storage station 102).

[0038] It is understandable that in other embodiments, the handling device 220 may be equipped with rollers and can move back and forth between the tray storage station 102 and the tray replacement station 101, and there is no need to set up the conveying track 230, which is not limited here.

[0039] In one embodiment, the tray storage device 210 includes a first storage mechanism 211 and a second storage mechanism 212 arranged adjacent to each other in the conveying direction, one of the first storage mechanism 211 and the second storage mechanism 212 is used to store empty trays, and the other is used to store full trays. Figure 3 In terms of the specific structures of the first storage mechanism 211 and the second storage mechanism 212, the structures of the two are exactly the same, respectively including a base 2111 and a hopper 2112 arranged on the base 2111, the hopper 2112 has a fence 2113, and the fence 2113 encloses a receiving space 2113a for receiving the tray 30. When the tray 30 is placed in the receiving space 2113a, the fence 2113 can prevent the tray 30 from sliding from the hopper 2112 to the outside of the hopper 2112.

[0040] In terms of the positional relationship between the first storage mechanism 211 and the second storage mechanism 212, the first storage mechanism 211 may be located upstream of the second storage mechanism 212 in the conveying direction, or the first storage mechanism 211 may be located downstream of the second storage mechanism 212 in the conveying direction, which is not particularly limited. In addition, the first storage mechanism 211 may store empty trays and the second storage mechanism 212 may store full trays, or the first storage mechanism 211 may store full trays and the second storage mechanism 212 may store empty trays, which is not particularly limited.

[0041] It is understandable that the tray storage device 210 is not limited to the above structure, and only one storage mechanism may be provided, and the empty trays and full trays are alternately stored by the storage mechanism, that is, after the handling device 220 unloads the empty trays into the storage space 2113a of the hopper 2112, the empty trays are immediately lifted away by the crane in the workshop, and then the full trays are placed in the storage space 2113a by the crane for handling by the handling device 220. However, it is obvious that the simultaneous provision of the first storage mechanism 211 and the second storage mechanism 212 in the tray storage device 210 enables the empty trays or full trays to be placed in the first storage mechanism 211 or the second storage mechanism 212 in advance while the crane handling device 220 moves along the conveying track 230, thereby reducing the waiting time and facilitating the improvement of the replacement efficiency of the trays 30.

[0042] Furthermore, when the handling device 220 moves to the tray storage station 102, the handling device 220 can move along the conveying track 230 and adjust its position so as to be located in sequence with the first storage mechanism 211 and the second storage mechanism 212 to complete the unloading of empty trays or the removal of full trays. Alternatively, the handling device 220 can stop at a fixed position after moving to the tray storage station 102, and the tray storage device 210 can move relative to the handling device 220 along the conveying direction so that the first storage mechanism 211 and the second storage mechanism 212 are located in sequence with the handling device 220 to complete the unloading of empty trays or the removal of full trays. This is not limited here.

[0043] Furthermore, in order to enable the transport device 220 and the tray storage device 210 to be close to each other, so that the empty tray can be smoothly placed in the storage space of the hopper 2112, or the full tray placed in the hopper 2112 can be smoothly transferred to the transport device 220, in one embodiment, the hopper 2112 is slidably set on the base 2111 by components such as slide rails and sliders. Driven by a driving source such as a motor, the hopper 2112 can move relative to the base 2111 along a transfer direction perpendicular to the conveying direction (the Y direction shown in the figure), and the accommodating space 2113a surrounded by the fence 2113 has openings on the top and the side. In this way, when the transport device 220 moves to the tray storage station 102, the hopper 2112 of the first storage mechanism 211 or the hopper 2112 of the second storage mechanism 212 can move closer to or farther away from the transport device 220, thereby enabling an empty tray to be transferred to the hopper 2112 through the side opening or top opening of the accommodating space 2113a, or enabling a full tray placed on the hopper 2112 to be transferred from the side opening or top opening of the accommodating space 2113a to the transport device 220.

[0044] See also Figure 4 , is a schematic diagram of the structure of a transport device 220 according to an embodiment. In this embodiment, the transport device 220 includes a bearing seat 221 and a clamping mechanism 222, combined with Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the bearing seat 221 is slidably arranged on the conveying track 230, and the clamping mechanism 222 is arranged on the bearing seat 221, which has a clamping gap 222a of variable size. When the handling device 220 is located at the tray changing station 101, the clamping mechanism 222 can clamp the empty tray from the seam welding machine 100 in the clamping gap 222a, and when the handling device 220 moves to the tray storage station 102, the clamping mechanism 222 can unload the empty tray into the tray storage device 210; at this time, the clamping mechanism 222 can clamp the full tray from the tray storage device 210 in the clamping gap 222a, and when the handling device 220 returns to the tray storage station 102, the empty tray is unloaded from the clamping gap 222a to the tray storage device 210.

[0045] Optionally, when the handling device 220 is located at the tray changing station 101, in order to enable the handling device 220 to smoothly unload empty trays from the seam welding machine 100 or transfer full trays to the seam welding machine 100; or when the handling device 220 is at the tray storage station 102, in order to prevent the hopper 2112 from having insufficient travel relative to the base 2111 in the transfer direction, and to ensure that the handling device 220 can approach the tray storage device 210 along the transfer direction, the clamping mechanism 222 is also slidably connected to the bearing seat 221, so that the clamping mechanism 222 can move relative to the bearing seat 221 along the transfer direction perpendicular to the conveying direction.

[0046] In this way, when the handling device 220 is located at the tray changing station 101, the clamping mechanism 222 can approach or move away from the seam welding machine 100 along the transfer direction, so that the empty tray can be unloaded from the seam welding machine 100, or the full tray can be placed on the seam welding machine 100; when the handling device 220 is located at the tray storage station 102, the clamping mechanism 222 can approach or move away from the tray storage device 210 along the transfer direction, and combined with the hopper 2112, it can also move relative to the base 2111 along the transfer direction, so that when the handling device 220 is located at the tray storage station 102, it can ensure that the handling device 220 can smoothly place the empty tray into the accommodating space 2113a of the tray storage device 210, or ensure that the handling device 220 can smoothly take away the full tray from the tray storage device 210, so as to avoid the situation where the clamping mechanism 222 or the hopper 2112 has insufficient travel in the transfer direction.

[0047] Please continue reading Figure 4 and Figure 5 In a specific embodiment, the clamping mechanism 222 includes a support assembly 2221 and a clamping jaw 2222 slidably arranged on a bearing seat 221. A support block 2223 is provided at the bottom of the support assembly 2221. The clamping jaw 2222 is movably arranged at the top of the support assembly 2221 so that the clamping jaw 2222 and the support block 2223 together form a clamping gap 222a of variable size. When the clamping jaw 2222 descends relative to the support block 2223, the material tray 30 can be clamped in the clamping gap 222a. When the clamping jaw 2222 rises relative to the support block 2223, the material tray 30 can be released and transferred.

[0048] Preferably, since the material tray 30 is substantially cylindrical, in order to more firmly clamp the material tray 30 in the clamping gap 222a, in the embodiment shown in the figure, there are two support blocks 2223, and the two support blocks 2223 and the clamping claws 2222 are arranged at intervals along a circumferential direction. In this way, the material tray 30 can be clamped more firmly using three points to avoid the phenomenon of loose clamping.

[0049] It should be noted that the number of support blocks 2223 and the number of clamping claws 2222 are not limited, as long as they can firmly clamp the material tray 30. The structure of the clamping mechanism 222 is not limited to the structure described in the above embodiment, as long as it can have a clamping gap 222a with a variable size and can clamp the material tray 30 in the clamping gap 222a, the above are not limited.

[0050] In addition, when the clamping mechanism 222 and the tray storage device 210 are close to each other, in order to avoid the clamping mechanism 222 and the fence 2113 of the tray storage device 210 from interfering with each other, more specifically, as Figures 4 to 6 As shown, the support assembly 2221 includes a support seat 2221a and a lifting base plate 2221b, wherein the support seat 2221a is slidably arranged on the bearing seat 221, and the lifting base plate 2221b is liftably connected to the support seat 2221a, so that the lifting base plate 2221b can be lifted and lowered relative to the support seat 2221a under the drive of a driving source such as a motor or a cylinder, and the support block 2223 is arranged at the bottom of the lifting base plate 2221b, which can be lifted and lowered from the support seat 2221a. Figure 6 It can be seen that the clamping jaw 2222 is set on the top of the lifting base plate 2221b by a cylinder or an electric cylinder. In this way, when the lifting base plate 2221b is lifted and lowered relative to the support seat 2221a, the support block 2223 and the clamping jaw 2222 can be lifted and lowered relative to the support seat 2221a together, so that the clamping jaw 2222 and the support block 2223 can clamp the material tray 30 together to avoid the fence 2113, so as to avoid the clamping mechanism 222 from touching the fence 2113, and ensure that the empty material tray is smoothly placed in the hopper 2112 or the full material tray is smoothly taken out of the hopper 2112. In addition, the clamping jaw 2222 can also move independently relative to the lifting base plate 2221b to complete the clamping action or the loosening action.

[0051] The following combined Figures 1 to 6 , introduces the whole process of replacing the material tray 30 using the automatic material tray replacement equipment 200 provided in this application.

[0052] When the empty tray needs to be recovered, first, the handling device 220 moves along the conveying direction to the tray replacement station 101, and the clamping mechanism 222 moves along the transfer direction to approach the seam welder 100, so that part of the empty tray is located in the clamping gap 222a, and the clamping claw 2222 descends relative to the support block 2223 to clamp the empty tray in the clamping gap 222a. At this time, the fixing bolts on the seam welder 100 are manually loosened to allow the empty tray to be detached from the seam welder 100.

[0053] Then, the clamping mechanism 222 clamps the empty tray and retreats along the transfer direction to move away from the rolling welder 100, and rises to a avoidance position in the vertical direction. Then the handling device 220 moves horizontally to the tray storage station 102 along the conveying direction. At this time, the clamping mechanism 222 clamps the empty tray and descends from the avoidance position and approaches the first storage mechanism 211 along the transfer direction (assuming that the first storage mechanism 211 is used to store empty trays). The clamping claw 2222 rises relative to the support block 2223 to release the empty tray. Finally, the clamping mechanism 222 retreats along the transfer direction and puts the empty tray into the hopper 2112, thereby completing the action of recycling the empty tray.

[0054] When it is necessary to load a full tray onto the rolling welding machine 100, first, the handling device 220 moves along the conveying direction to the second storage mechanism 212 (assuming that the second storage mechanism 212 is used to store the full tray), and the clamping mechanism 222 moves along the transfer direction to approach the second storage mechanism 212, so that part of the full tray is located in the clamping gap 222a, and the clamping claw 2222 descends relative to the support block 2223 to clamp the full tray in the clamping gap 222a.

[0055] Then, the clamping mechanism 222 clamps the full tray and rises to the avoidance position in the vertical direction, and retreats in the transfer direction to move away from the second storage mechanism 212. Then the handling device 220 moves horizontally along the conveying direction and returns to the tray changing station 101. At this time, the clamping mechanism 222 clamps the full tray and descends from the avoidance position and approaches the seam welding machine 100 in the transfer direction. At this time, the fixing bolts on the seam welding machine 100 are manually tightened to fix the full tray on the seam welding machine 100. Finally, the clamping jaws 2222 rise relative to the support block 2223, and the clamping mechanism 222 retreats in the transfer direction to disengage the clamping mechanism 222 from the full tray, thereby completing the action of loading the full tray on the seam welding machine 100.

[0056] It can be seen that when the material tray is replaced using the automatic material tray changing equipment provided in the present application, no manual intervention is required during the entire material tray changing process. Compared with the existing material tray changing method, the degree of automation is higher, thereby improving the material tray changing efficiency, reducing the labor intensity of workers, and avoiding the occurrence of safety hazards.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An automatic tray replacement device for supplying full trays to a seam welding machine and recovering empty trays from the seam welding machine, characterized in that: The automatic tray changing device comprises: A tray storage device is disposed on a tray storage station, and the tray storage device is used to store the empty trays and the full trays; A handling device, comprising a clamping mechanism, wherein the clamping mechanism has a clamping gap of variable size, and the handling device can move back and forth between a tray changing station and the tray storage station; The clamping mechanism is capable of clamping the empty tray in the clamping gap from the seam welder when the transport device is located at the tray replacement station, and unloading the empty tray from the clamping gap to the tray storage device when the transport device moves to the tray storage station; The clamping mechanism can also clamp the full tray from the tray storage device in the clamping gap when the transport device is located at the tray storage station, and unload the full tray from the clamping gap to the rolling welder when the transport device returns to the tray changing station.

2. The automatic tray changing device according to claim 1, characterized in that: The automatic tray replacement equipment also includes a conveying track, which passes through the tray replacement station and the tray storage station in sequence along a conveying direction. The handling device can be movably arranged on the conveying track and can move along the conveying track.

3. The automatic tray changing device according to claim 2, characterized in that: The handling device further comprises a bearing seat, the bearing seat is slidably arranged on the conveying track, and the clamping mechanism is slidably connected to the bearing seat so as to be movable relative to the bearing seat along a transfer direction perpendicular to the conveying direction; When the transport device is located at the tray changing station, the clamping mechanism can approach or move away from the seam welder along the transfer direction, or when the transport device is located at the tray storage station, the clamping mechanism can approach or move away from the tray storage device along the transfer direction.

4. The automatic tray changing device according to claim 3 is characterized in that: The clamping mechanism comprises a support assembly and a clamping claw. A support block is provided at the bottom of the support assembly. The clamping claw is movably arranged at the top of the support assembly to form the clamping gap with a variable size together with the support block.

5. The automatic tray changing device according to claim 4 is characterized in that: There are at least two support blocks, and all the support blocks and the clamping jaws are spaced apart along a circumferential direction.

6. The automatic tray changing device according to claim 4, characterized in that: The support assembly includes a support seat slidably arranged on the bearing seat and a lifting base plate connected to the support seat in a liftable manner, the support block is arranged at the bottom of the lifting base plate, and the clamp is arranged at the top of the lifting base plate in a liftable manner.

7. The automatic tray changing device according to claim 2, characterized in that: The tray storage device includes a first storage mechanism and a second storage mechanism which are adjacently arranged along the conveying direction, one of the first storage mechanism and the second storage mechanism is used to store the empty trays, and the other is used to store the full trays.

8. The automatic tray changing device according to claim 7, characterized in that: The first storage mechanism and the second storage mechanism respectively include a base and a hopper arranged on the base, and the hopper has a fence, and the fence encloses a receiving space for receiving a material tray.

9. The automatic tray changing device according to claim 8, characterized in that: The hopper is slidably arranged on the base so as to be movable relative to the base along a transfer direction perpendicular to the conveying direction; when the transport device moves to the tray storage station, the hopper of the first storage mechanism or the hopper of the second storage mechanism can be close to or away from the transport device.

10. A seam welding system, characterized in that: It comprises a roll welding machine and the automatic tray changing device as described in any one of claims 1 to 9, wherein the roll welding machine is arranged on the tray changing station.

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