A feeding and discharging conveying table

Abstract

The utility model relates to numerical control machine tool equipment technical field especially, it is a kind of feeding and discharging conveying platform, its technical scheme main point includes: rack;Power mechanism, is located in the rack;First conveying chain group, is set up in the rack;Second conveying chain group, is set up in the rack, the first conveying chain group and the second conveying chain group are used to carry material, the power mechanism is connected with the first conveying chain group and the second conveying chain group respectively, and is used to drive the first conveying chain group and second conveying chain group synchronous movement;And adjusting mechanism is connected with the first conveying chain group and the second conveying chain group respectively, is used to drive the first conveying chain group and the second conveying chain group mutually close or away, to change the interval size of both, the application has solved the problem that material feeding and discharging efficiency is low and equipment general-purpose is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool equipment technology, and in particular to a loading and unloading conveyor table. Background Technology

[0002] In furniture manufacturing, CNC machine tools are typically used to cut, mill, or engrave bar stock, discs, or shafts. With technological advancements, the requirements for overall automation in production lines are increasing, and there is still considerable room for improvement and optimization in the future.

[0003] Currently, most small and medium-sized CNC lathes still rely on manual loading and unloading. This method is labor-intensive, inefficient, and poses safety hazards. It is also difficult to ensure consistent cycle time. Most of them can only perform "one-to-one" loading and unloading, and cannot continuously supply multiple blanks or receive multiple finished products. Production needs to be frequently interrupted to replenish blanks or clear finished products.

[0004] In addition, some CNC machine tools also use rotating devices for specific workpieces to achieve material loading and unloading. Although this method solves the efficiency problem of manual loading and unloading, it has the problem of insufficient versatility. For example, if the product is changed, the entire mechanism may not be applicable and cannot adapt to the modern trend of flexible manufacturing with multiple varieties and small batches. Therefore, it is necessary to improve the existing technology.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This utility model provides a material loading and unloading conveyor to solve the problems of low material loading and unloading efficiency and insufficient equipment versatility in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A loading and unloading conveyor, comprising:

[0009] frame;

[0010] The power mechanism is located on the frame;

[0011] The first conveyor chain assembly is disposed on the frame;

[0012] The second conveyor chain group is disposed on the frame. The first conveyor chain group and the second conveyor chain group are used to carry materials. The power mechanism is connected to the first conveyor chain group and the second conveyor chain group respectively, and is used to drive the first conveyor chain group and the second conveyor chain group to move synchronously.

[0013] And an adjustment mechanism, which is connected to the first conveyor chain group and the second conveyor chain group respectively, for driving the first conveyor chain group and the second conveyor chain group to move closer or further apart to change the spacing between them.

[0014] Preferably, the adjustment mechanism includes:

[0015] The lead screw is rotatably connected at both ends to the frame and the second conveyor chain assembly, respectively.

[0016] A threaded connecting sleeve is provided on the first conveyor chain group, and the threaded connecting sleeve is threadedly connected to the lead screw.

[0017] Preferably, it further includes a guiding mechanism, the guiding mechanism comprising:

[0018] The guide rod is fixedly connected at both ends to the frame and the second conveyor chain assembly, respectively;

[0019] A guide sleeve is provided on the first conveyor chain group, and the guide sleeve is slidably engaged with the guide rod.

[0020] Preferably, the adjustment mechanism further includes a handwheel, which is fixedly mounted on the lead screw.

[0021] Preferably, the power mechanism includes:

[0022] The drive shaft is connected to the first conveyor chain group and the second conveyor chain group respectively.

[0023] A power motor is mounted on the frame;

[0024] The first sprocket is located on the output shaft of the power motor;

[0025] A second sprocket is disposed on the drive shaft;

[0026] And a transmission chain, which are respectively wrapped around the first sprocket and the second sprocket.

[0027] Preferably, the first conveyor chain group and the second conveyor chain group are respectively provided with positioning plates, and the positioning plates are provided with positioning recesses for positioning and placing materials.

[0028] Preferably, the positioning notch is a V-shaped positioning notch.

[0029] Preferably, it also includes an oil receiving tray, which is disposed on the frame and located below the first conveyor chain group and the second conveyor chain group.

[0030] Preferred options also include:

[0031] Material handling robot;

[0032] A control system is connected to the material handling robot;

[0033] And photoelectric sensors, used to detect whether there is material at the loading and unloading positions;

[0034] When the material condition meets the requirements, the photoelectric sensor generates a first sensing signal and sends it to the control system. The control system controls the material handling robot to pick up and place materials based on the first sensing signal.

[0035] When the material condition does not meet the requirements, the photoelectric sensor is triggered to generate a second sensing signal and send it to the control system. The control system controls the material handling robot to stop picking up and placing materials based on the second sensing signal.

[0036] Preferably, the power mechanism, the first conveyor chain group, the second conveyor chain group, and the adjustment mechanism are arranged in multiple groups side by side.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The loading and unloading conveyor provided by this utility model can drive the first conveyor chain group and the second conveyor chain group to rotate synchronously under the drive of the power mechanism. By placing materials on the first conveyor chain group and the second conveyor chain group, the automatic loading and unloading of materials can be realized. Furthermore, by operating the adjustment mechanism, the distance between the first conveyor chain group and the second conveyor chain group can be adjusted to meet the material transfer requirements of various lengths and sizes. The versatility of the equipment is optimized and improved. Therefore, the problems of low loading and unloading efficiency and insufficient equipment versatility are solved.

[0039] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of the loading and unloading conveyor provided in this embodiment of the utility model;

[0042] Figure 2 This is a schematic diagram of the frame and power mechanism provided in this embodiment of the utility model;

[0043] Figure 3 This is a schematic diagram of the structure of the first conveyor chain group, the second conveyor chain group, the power mechanism, the adjustment mechanism, and the guide mechanism provided in this embodiment of the utility model;

[0044] Figure 4 yes Figure 3 Enlarged view of section A;

[0045] Figure 5 This is a schematic diagram of the oil receiving tray provided in an embodiment of the present invention.

[0046] Figure label:

[0047] 1. Rack;

[0048] 2. Power mechanism; 21. Drive shaft; 22. Power motor; 23. First sprocket; 24. Second sprocket; 25. Drive chain;

[0049] 3. First conveyor chain group; 4. Second conveyor chain group;

[0050] 5. Adjusting mechanism; 51. Lead screw; 52. Threaded connecting sleeve; 53. Handwheel;

[0051] 6. Guiding mechanism; 61. Guide rod; 62. Guide sleeve;

[0052] 7. Positioning plate; 71. Positioning notch;

[0053] 8. Oil receiving tray. Detailed Implementation

[0054] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0055] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0056] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0057] The following is in conjunction with the appendix Figure 1-5 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0058] Please refer to Figure 1 This utility model provides a loading and unloading conveyor platform, including a frame 1, a power mechanism 2, a first conveyor chain group 3, a second conveyor chain group 4, and an adjusting mechanism 5. The power mechanism 2, the first conveyor chain group 3, and the second conveyor chain group 4 are respectively mounted on the frame 1. The first conveyor chain group 3 and the second conveyor chain group 4 are used to carry materials. The power mechanism 2 is connected to both the first conveyor chain group 3 and the second conveyor chain group 4 and is used to drive them to move synchronously. The adjusting mechanism 5 is connected to both the first conveyor chain group 3 and the second conveyor chain group 4 and is used to drive them to move closer or further apart to change their spacing.

[0059] Specifically, in some embodiments, the frame 1 can be formed by welding steel frames and sheet metal components. The frame 1 is used to provide support for various mechanisms, and its specific structure can be adjusted according to actual needs, without specific limitations.

[0060] In addition, the first conveyor chain group 3 and the second conveyor chain group 4 have similar structures and are arranged in parallel to each other. Taking the first conveyor chain group 3 as an example, the first conveyor chain group 3 mainly includes a mounting base, a first conveyor sprocket, a second conveyor sprocket, and a conveyor chain.

[0061] The first and second conveyor sprockets are rotatably mounted on the mounting base and located at both ends of the mounting base. Meanwhile, the conveyor chain is respectively wrapped around the first and second conveyor sprockets. At this time, the first conveyor sprocket is connected to the power mechanism 2 for transmission. The power mechanism 2 inputs torque to the first conveyor sprocket so that the first and second conveyor sprockets can guide the conveyor chain to rotate.

[0062] Based on the above setup, if the material is placed on the conveyor chain, the movement of the conveyor chain can drive the material from one end of the first conveyor chain group 3 to the other end, so that the material can be further fed into the CNC equipment, thereby realizing the loading action; or it can drive the processed material from the other end to one end, thereby realizing the unloading action. Here, for ease of understanding, the direction of material movement is defined as the transfer direction, and the other end of the first conveyor chain group 3 and the second conveyor chain group 4 is defined as the material loading and unloading position.

[0063] Additionally, it should be explained that during transportation, the two ends of the material are placed on the first conveyor chain group 3 and the second conveyor chain group 4 respectively. At this time, the power mechanism 2 is used to transmit power to the first conveyor chain group 3 and the second conveyor chain group 4 simultaneously, so that the two start synchronously. This allows the material to be transferred smoothly and is not easily deviated.

[0064] Based on this, the adjustment mechanism 5 can drive the first conveyor chain group 3 and the second conveyor chain group 4 to move closer or further away along the direction perpendicular to the material transfer direction. At this time, the distance range between the first conveyor chain group 3 and the second conveyor chain group 4 can be changed to meet the transfer requirements of materials with different lengths.

[0065] The loading and unloading conveyor provided in this application embodiment, through the coordinated action of various mechanisms, enables the conveyor to have the ability to supply or receive materials, and allows it to seamlessly cooperate with CNC equipment to achieve automated loading and unloading functions. Furthermore, it effectively reduces labor intensity, improves transfer efficiency, and can adapt to transfer requirements with different material sizes, thus solving the problems of insufficient material transfer efficiency and insufficient equipment versatility.

[0066] In some embodiments, refer to Figure 2 and Figure 3 The power mechanism 2 includes a drive shaft 21, a power motor 22, a first sprocket 23, a second sprocket 24, and a drive chain 25. The drive shaft 21 is connected to both the first conveyor chain group 3 and the second conveyor chain group 4. The power motor 22 is mounted on the frame 1, and the first sprocket 23 is mounted on the output shaft of the power motor 22. The second sprocket 24 is mounted on the drive shaft 21, and the drive chain 25 covers both the first sprocket 23 and the second sprocket 24.

[0067] To meet transmission requirements, the cross-section of the transmission shaft 21 is polygonal, and the transmission shaft 21 is simultaneously connected to the first conveyor sprocket in the first conveyor chain group 3 and the first conveyor sprocket in the second conveyor chain group 4. Specifically, a transmission kit is provided on the first conveyor sprocket, and the transmission kit and the first conveyor sprocket are respectively provided with inner holes.

[0068] The outer edge of the transmission assembly is press-fitted into the inner hole of the first conveyor sprocket using an interference fit or transition fit. In addition, the inner hole of the transmission assembly has a polygonal opening profile that matches the outer edge profile of the transmission shaft 21. At this time, the transmission shaft 21 slides through the inner hole of the transmission assembly, and the transmission shaft 21 meshes with the transmission assembly through the polygonal profile.

[0069] Based on the above configuration, there are two ways for the drive shaft 21 to interact with the first conveyor sprocket. In one way, when the drive shaft 21 rotates, it drives the first conveyor sprocket to rotate synchronously under the action of the polygonal profile, thus transmitting power to the first conveyor chain group 3 and the second conveyor chain group 4 respectively. In the other way, since the drive shaft 21 slides through the inner hole of the transmission assembly, the drive shaft 21 can also extend and retract along its own length direction to the first conveyor sprocket. This can accommodate the adjustment actions of the first conveyor chain group 3 and the second conveyor chain group 4 moving closer or further apart, which means that while achieving stable torque output, it can also meet the spacing adjustment requirements of the first conveyor chain group 3 and the second conveyor chain group 4. The structural design is ingenious.

[0070] Based on this, the power motor 22 is fixedly mounted on the frame 1. The power motor 22 can be a servo motor, a three-phase asynchronous motor, or other motor components with forward and reverse torque output. In some other embodiments, a hydraulic motor can also be used. Regardless of the specific motor structure adopted, it should be included in the scope of this solution and no specific restrictions are imposed here.

[0071] In addition, the first sprocket 23 is fixedly installed on the output shaft of the power motor 22, which can drive the first sprocket 23 to rotate. At the same time, the second sprocket 24 is fixedly installed on the transmission shaft 21. By wrapping the transmission chain 25 around the first sprocket 23 and the second sprocket 24 respectively, the torque can pass through the first sprocket 23, the second sprocket 24 and the transmission chain 25 in sequence, and finally reach the first conveyor chain group 3 and the second conveyor chain group 4, so as to achieve stable power input.

[0072] Furthermore, continue to refer to Figure 3 In order to realize the adjustment function of the first conveyor chain group 3 and the conveyor chain group, in some embodiments, the adjustment mechanism 5 includes a lead screw 51 and a threaded connecting sleeve 52. The two ends of the lead screw 51 are rotatably connected to the frame 1 and the second conveyor chain group 4, respectively. The threaded connecting sleeve 52 is disposed on the first conveyor chain group 3 and is threadedly connected to the lead screw 51.

[0073] Specifically, the threaded connecting sleeve 52 is fixedly installed at the mounting base of the first conveyor chain group 3, and the threaded connecting sleeve 52 is provided with a threaded hole. At this time, the two ends of the lead screw 51 can be rotatably installed on the frame 1 and the second conveyor chain group 4 respectively through the bearing seat. The lead screw 51 passes through the threaded fastening sleeve and is threadedly connected to the threaded hole.

[0074] Based on the above settings, by rotating the lead screw 51 in the forward or reverse direction, the first conveyor chain group 3 and the second conveyor chain group 4 can be controlled to move closer or further apart, thereby realizing the spacing adjustment function and meeting the transfer space requirements of materials of different lengths.

[0075] Furthermore, in some embodiments, the adjustment mechanism 5 further includes a handwheel 53, which is fixedly mounted on the lead screw 51.

[0076] Based on the above configuration, the handwheel 53 makes it easier for the operator to drive the lead screw 51 to rotate, making it more convenient to use. In addition, in some other embodiments, the handwheel 53 can also be replaced by a motor component. By controlling the start and stop of the motor component, the automatic control of the spacing adjustment process can be achieved, which can be more efficient.

[0077] In some embodiments, the system further includes a guide mechanism 6, which includes a guide rod 61 and a guide sleeve 62. The two ends of the guide rod 61 are fixedly connected to the frame 1 and the second conveyor chain group 4, respectively. The guide sleeve 62 is disposed on the first conveyor chain group 3, and the guide sleeve 62 is slidably engaged with the guide rod 61.

[0078] Specifically, the guide rod 61 is a round rod structure, the guide sleeve 62 is a circular sleeve outline, the guide sleeve 62 is provided with guide holes that pass through both ends, the guide sleeve 62 is fixedly installed on the mounting base of the first conveyor chain group 3, the guide rod 61 passes through the guide hole of the guide sleeve 62 and slides against the hole wall of the guide hole.

[0079] Based on the above configuration, the sliding cooperation between the guide sleeve 62 and the guide rod 61 can further improve the motion stability of the first conveyor chain group 3 and the second conveyor chain group 4 as they approach or move away from each other, and also help improve the adjustment accuracy of the structure.

[0080] Optionally, multiple sets of guide mechanisms 6 can be set. Multiple sets of guide mechanisms 6 are arranged sequentially along the length direction of the first conveyor chain group 3 and the second conveyor chain group 4, so as to provide multi-point guiding effect for the first conveyor chain group 3 and the second conveyor chain group 4. It is understood that the specific number of guide mechanisms 6 can be adjusted according to actual needs, and no specific restrictions are made here.

[0081] In some embodiments, refer to Figure 3 and Figure 4Positioning plates 7 are respectively provided on the first conveyor chain group 3 and the second conveyor chain group 4. Positioning plates 7 are provided with positioning recesses 71, which are used for positioning and placing materials.

[0082] Specifically, the positioning plate 7 is provided with mounting holes. The positioning plate 7 can be fixedly assembled to the node position of the conveyor chain by pins. The positioning plate 7 is set vertically, and one side of the positioning plate 7 extends out relative to the conveyor chain. The positioning notch 71 is recessed on the side of the positioning plate 7 away from the conveyor chain.

[0083] Based on the above settings, the material is usually rod-shaped. When the material is placed in the first conveyor chain group 3 and the second conveyor chain group 4, the material can be embedded in the positioning notch 71 so that the material is positioned and is not easily shifted during transportation. The transmission accuracy and transmission stability of the material are optimized and improved.

[0084] In some specific embodiments, the positioning notch 71 is a V-shaped positioning notch 71.

[0085] Among them, the V-shaped positioning notch 71 has two intersecting edges, which can support the material well on the one hand, and when the bar has an angular outer peripheral structure, the V-shaped positioning notch 71 can better apply the snap-fit ​​positioning effect to the material, and the stability of the material when placed is further optimized and improved.

[0086] Furthermore, referring to Figure 5 In some embodiments, an oil receiving tray 8 is also included, which is disposed on the frame 1 and located below the first conveyor chain group 3 and the second conveyor chain group 4.

[0087] Specifically, the oil receiving tray 8 has a storage cavity inside, and the top of the storage cavity is open and faces the first conveyor chain group 3 and the second conveyor chain group 4. After the product is produced, cutting oil stains and iron filings may remain on the surface. If these impurities fall into the conveyor table, they may affect the normal operation of the equipment. Based on this, by setting the oil receiving tray 8 below the first conveyor chain group 3 and the second conveyor chain group 4, the falling cutting oil and iron filings can be collected to prevent debris from accumulating on the frame 1.

[0088] Based on this, materials are usually taken out or put in at the loading and unloading positions. The state of the materials at the loading and unloading positions will affect whether the loading and unloading operations can be carried out smoothly. For example, if there is no material at the loading and unloading position, the material cannot be taken out from the loading and unloading position. If there is material at the loading and unloading position, the processed product cannot be put into the loading and unloading position. Therefore, the above situations will affect the smooth progress of the loading and unloading operations.

[0089] To avoid the above situation and to enable materials to be loaded and unloaded continuously and stably, some embodiments also include a material handling robot, a control system, and photoelectric sensors.

[0090] The control system is connected to the material handling robot, and photoelectric sensors are used to detect whether there is material at the loading and unloading positions.

[0091] When the material condition meets the requirements, the photoelectric sensor generates a first sensing signal and sends it to the control system. The control system then controls the material handling robot to pick up and place materials based on the first sensing signal.

[0092] When the material condition does not meet the requirements, the photoelectric sensor is triggered to generate a second sensing signal, which is then sent to the control system. The control system then controls the material handling robot to stop picking up and placing materials based on the second sensing signal.

[0093] Specifically, the material handling robot can be a five-axis robot or a six-axis robot. The material handling robot can pick up materials from the loading and unloading station and put them into the CNC equipment, or it can pick up processed products from the CNC equipment and put them into the loading and unloading station to complete the loading and unloading actions. No restrictions are placed on the specific structure of the material handling robot.

[0094] In addition, the control system mainly includes a main control chip, which has data processing capabilities. The specific principle and model of the main control chip are not limited here. The main control chip has a transmitting end and a receiving end. The transmitting end of the main control chip is connected to the material handling robot, while the photoelectric sensor is connected to the receiving end of the main control chip.

[0095] Based on this, the photoelectric sensor can emit detection light rays passing through the loading and unloading positions, and use the on / off status of the detection light rays to send different signals. Specifically, when the material is at the loading and unloading position, the material blocks the detection light rays, while when there is no material at the loading and unloading position, the detection light rays of the photoelectric sensor are turned on. The two situations cause the photoelectric sensor to generate different sensing signals.

[0096] It should be explained that the determination of whether the material status meets the requirements can be based on the current loading or unloading action of the conveyor as a prerequisite. For example, when the material needs to be loaded, it needs to be in a state of blocking the light so that the picking robot can grab the material at the loading or unloading position. In this case, the sensing signal generated by the photoelectric sensor when the detection light is blocked can be used as the first sensing signal, and the sensing signal generated when the detection light is turned on can be defined as the second sensing signal.

[0097] Conversely, when materials need to be unloaded, the detection light needs to be on so that the picking robot can place the materials into the unloading position. Therefore, the sensing signal generated by the photoelectric sensor when the detection light is on can be used as the first sensing signal, and the sensing signal generated when the detection light is blocked can be used as the second sensing signal.

[0098] Based on this, corresponding control logic can be preset in the main control chip to analyze and judge the current feeding or unloading actions of the conveyor to determine whether the material status meets the requirements.

[0099] Based on the above settings, the material transportation status can be determined to ensure that the loading and unloading operations of the equipment can proceed smoothly and that jamming or shutdown is less likely to occur.

[0100] In some embodiments, the power mechanism 2, the first conveyor chain group 3, the second conveyor chain group 4, and the adjustment mechanism 5 are configured as multiple groups arranged side by side.

[0101] Based on the above settings, multiple transport stations can be formed. In some specific configurations, multiple transport stations can simultaneously perform loading or unloading actions, or in other specific configurations, some transport stations can perform loading actions while others can simultaneously perform unloading actions. In this way, the transfer type of the transport stations can be configured according to the material transfer requirements, which can more flexibly meet the needs of flexible production and further optimize the overall material transfer efficiency.

[0102] Optionally, the specific number of the power mechanism 2, the first conveyor chain group 3, the second conveyor chain group 4, and the adjustment mechanism 5 can be adjusted according to actual needs, such as two groups, four groups, or six groups. The specific number of the above mechanisms is not limited here. In this embodiment, the power mechanism 2, the first conveyor chain group 3, the second conveyor chain group 4, and the adjustment mechanism 5 are set to two groups as an example.

[0103] The loading and unloading conveyor provided in this application has the following beneficial effects: This solution ultimately provides an automated loading and unloading conveyor with high positioning accuracy, good flexibility, high integration, continuous feeding and receiving capabilities, and seamless collaboration with CNC lathes. It makes full use of the picking robot for loading and unloading operations, reducing the labor intensity of personnel and the downtime of equipment.

[0104] Therefore, the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A loading and unloading conveying table, characterized in that, include: Rack (1); The power mechanism (2) is located on the frame (1); The first conveyor chain group (3) is disposed on the frame (1); The second conveyor chain group (4) is disposed on the frame (1). The first conveyor chain group (3) and the second conveyor chain group (4) are used to carry materials. The power mechanism (2) is connected to the first conveyor chain group (3) and the second conveyor chain group (4) respectively, and is used to drive the first conveyor chain group (3) and the second conveyor chain group (4) to move synchronously. And an adjustment mechanism (5), which is connected to the first conveyor chain group (3) and the second conveyor chain group (4) respectively, for driving the first conveyor chain group (3) and the second conveyor chain group (4) to move closer or further apart to change the distance between them.

2. The feeding and discharging conveying table according to claim 1, characterized in that, The adjustment mechanism (5) includes: The lead screw (51) is rotatably connected at both ends to the frame (1) and the second conveyor chain group (4), respectively; And a threaded connecting sleeve (52) is provided on the first conveyor chain group (3), and the threaded connecting sleeve (52) is threadedly connected to the lead screw (51).

3. The loading and unloading conveyor table according to claim 2, characterized in that, It also includes a guiding mechanism (6), which comprises: The guide rod (61) is fixedly connected at both ends to the frame (1) and the second conveyor chain group (4); And a guide sleeve (62) is disposed on the first conveyor chain group (3), wherein the guide sleeve (62) is slidably engaged with the guide rod (61).

4. The loading and unloading conveyor table according to claim 2, characterized in that, The adjustment mechanism (5) also includes a handwheel (53), which is fixedly mounted on the lead screw (51).

5. The feeding and discharging conveying table according to claim 1, characterized in that, The power mechanism (2) includes: The drive shaft (21) is connected to the first conveyor chain group (3) and the second conveyor chain group (4) respectively. A power motor (22) is mounted on the frame (1); The first sprocket (23) is disposed on the output shaft of the power motor (22); The second sprocket (24) is disposed on the drive shaft (21); And a transmission chain (25) is respectively covered and disposed on the first sprocket (23) and the second sprocket (24).

6. The feeding and discharging conveying table according to claim 1, characterized in that, The first conveyor chain group (3) and the second conveyor chain group (4) are respectively provided with positioning plates (7), and the positioning plates (7) are provided with positioning recesses (71), which are used for positioning and placing materials.

7. The loading and unloading conveyor table according to claim 6, characterized in that, The positioning notch (71) is a V-shaped positioning notch (71).

8. The feeding and discharging conveying table according to claim 1, characterized in that, It also includes an oil receiving tray (8), which is disposed on the frame (1) and located below the first conveyor chain group (3) and the second conveyor chain group (4).

9. The feeding and discharging conveying table according to claim 1, characterized in that, Also includes: Material handling robot; A control system is connected to the material handling robot; And photoelectric sensors, used to detect whether there is material at the loading and unloading positions; When the material condition meets the requirements, the photoelectric sensor generates a first sensing signal and sends it to the control system. The control system controls the material handling robot to pick up and place materials based on the first sensing signal. When the material condition does not meet the requirements, the photoelectric sensor is triggered to generate a second sensing signal and send it to the control system. The control system controls the material handling robot to stop picking up and placing materials based on the second sensing signal.

10. The loading and unloading conveyor table according to claim 1, characterized in that, The power mechanism (2), the first conveyor chain group (3), the second conveyor chain group (4) and the adjustment mechanism (5) are arranged in multiple groups side by side.

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