Automatic envelope supply table sorting machine

Abstract

The utility model relates to the technical field of package sorting, in particular to an envelope piece automatic package supply table sorting machine, which comprises an outer contour measuring assembly, an outer contour measuring assembly, an outer contour measuring assembly, an outer contour measuring assembly and an inner contour measuring assembly, wherein the outer contour measuring assembly is used for acquiring outer contour size values and position information of envelope pieces; the input end of the controller is connected with the outer contour measuring assembly, and the controller is used for receiving the outer contour size numerical value and the position information and outputting a number starting instruction and a position instruction; the part grabbing mechanism comprises a plurality of suction cup assemblies and a plurality of suction cup driving assemblies, and the suction cup assemblies correspond to the suction cup driving assemblies one to one; the multiple suction cup driving assemblies are connected with the output end of the controller and receive the number starting instruction and the position instruction, and the suction cup driving assemblies at the corresponding positions and the corresponding number drive the suction cup assemblies to suck the envelope pieces in a negative pressure mode. According to the utility model, the sucking discs for sucking and grabbing envelope pieces with different specifications can be adjusted in a self-adaptive manner, and the technical effect that the envelope pieces with various specifications can be accurately and stably sucked and grabbed one by one and conveyed to the next working procedure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of parcel sorting, in particular to an automatic envelope supply and sorting machine. Background Art

[0002] In modern express logistics, there are a large number of envelopes, which mainly carry important items such as contracts, invoices, certificates, bank cards, and statements. If they are lost or damaged, it may cause significant losses to customers. Since such letters are light in weight, thin in appearance, and of different shapes and sizes, it is difficult for existing express delivery companies' large-scale sorting equipment to sort them normally, and there are problems such as missing or dropping envelopes or multiple envelopes being picked up at the same time. If they are sorted manually, there will be problems of low efficiency and poor economy. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model provides an automatic envelope supply and sorting machine.

[0004] The utility model provides an automatic envelope supply and sorting machine, comprising:

[0005] An outer contour measuring component, the outer contour measuring component is used to obtain the outer contour dimension value of the envelope piece and the position information of the envelope piece;

[0006] A controller, wherein an input end of the controller is connected to the outer contour measurement component, for receiving the outer contour dimension value and the position information, and outputting a number start instruction and a position instruction;

[0007] The grabbing mechanism includes a plurality of suction cup assemblies and a plurality of suction cup drive assemblies, and the suction cup assemblies correspond to the suction cup drive assemblies one by one; the plurality of suction cup drive assemblies are respectively connected to the output end of the controller to receive the number start instructions and the position instructions, and the suction cup drive assemblies of corresponding positions and corresponding numbers drive the suction cup assemblies to negatively pressure the envelope.

[0008] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, the suction cup drive assembly includes a negative pressure generator, the suction cup assembly includes a suction cup, the negative pressure generator is connected to the suction cup, and the suction cup is made of silicone.

[0009] Furthermore, according to an automatic envelope feeding and sorting machine provided by the utility model, it also includes a first workstation and a second workstation, the grabbing mechanism includes a first suction cup group, a fixed suction cup frame and a linear slide mechanism, the first suction cup group is connected to the fixed suction cup frame, the fixed suction cup frame is connected to the linear slide mechanism, the linear slide mechanism drives the first suction cup group to reciprocate horizontally, the first suction cup group translates the envelope at the first workstation to the second workstation, and the outer contour measurement component is fixedly set at the first workstation.

[0010] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, it also includes an envelope code reading system, the envelope code reading system includes a first code reading mechanism and a second code reading mechanism, the first code reading mechanism and the second code reading mechanism respectively scan the two outer side surfaces of the same envelope, the first code reading mechanism scans the express delivery number on one outer side surface of the envelope on the first station, the second station is a perspective window, the second code reading mechanism scans the express delivery number on the other outer side surface of the envelope on the second station through the perspective window, and the first code reading mechanism and the second code reading mechanism are connected to the controller.

[0011] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, it also includes a third workstation, which is close to the second workstation; the grabbing mechanism also includes a second suction cup group, and the second suction cup group and the first suction cup group are respectively located at both ends of the fixed suction cup frame along the length direction of the fixed suction cup frame; the second suction cup group is used to place the envelope of the second workstation on the third workstation.

[0012] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, it also includes a guide rail and a servo lifting mechanism, the first station is arranged on the guide rail, the guide rail is provided with a gap, the servo lifting mechanism passes through the gap to drive the first station to move back and forth, so as to push the envelope to the grabbing mechanism, and the servo lifting mechanism is connected to the controller.

[0013] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, the guide rail is provided with a cache station, the cache station is connected to a driving slide rail mechanism, the driving slide rail mechanism is connected to the controller, and drives the cache station to move back and forth along the length direction of the guide rail, and the cache station transfers the envelope to the first station.

[0014] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, a movable blocking plate is provided between the buffer station and the first station, and the blocking plate is connected to a linear cylinder.

[0015] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, the third workstation is provided with a servo conveyor belt mechanism and an envelope piece contour scanning component, the servo conveyor belt mechanism and the envelope piece contour scanning component are connected to the controller, the envelope piece contour scanning component scans the envelope piece contour and transmits the contour scanning result to the controller, the controller issues an envelope piece sorting instruction, the servo conveyor belt mechanism receives the envelope piece sorting instruction, and transmits the envelope piece to the corresponding process.

[0016] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0017] The utility model provides an automatic envelope feeding and sorting machine. The suction cup driving component can activate the suction cup quantity and position of the first suction cup group and the second suction cup group suitable for sucking the envelope according to the driving suction cup instruction issued by the controller, which solves the technical problem that the envelope is missed or multiple pieces are picked up at the same time when the express delivery number information of the envelope is entered, so that each envelope is picked up individually, accurately and firmly; the first station and the first code reading mechanism and the second station and the second code reading mechanism provided by the utility model can read the express delivery number of the envelope at the location of the envelope. The express number can be identified and read on the front or back side, avoiding manual intervention, saving time in entering the express number and improving work efficiency. At the same time, the envelope contour scanning component can also scan and measure the size, thickness and shape of the envelope. The controller receives the measurement data of the envelope contour scanning component to determine whether there are abnormal conditions such as curling, wrinkles, or even the express number cannot be read, and then controls the third workstation to transport normal or abnormal envelopes to the corresponding processes, thereby realizing the automation of sorting envelopes and improving work efficiency.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of an automatic envelope supply and sorting machine.

[0021] Figure 2The utility model is a schematic diagram of the structure of the automatic envelope supply and sorting machine provided by the utility model when viewed from above.

[0022] Reference numerals:

[0023] 1. First station; 2. Second station; 3. Third station; 4. First contour measuring instrument; 5. Second code reader; 6. First servo motor; 7. Linear cylinder; 8. Blocking plate; 9. Second contour measuring instrument; 10. Linear guide rail; 11. Cache station; 12. Servo lifting mechanism; 13. Guide rail; 14. Linear slide group; 15. Second servo motor; 16. Suction cup; 17. Push stop claw. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The following embodiments are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0025] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0027] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or 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.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0029] Combine the following Figure 1-Figure 2 The utility model describes an automatic envelope supply and sorting machine:

[0030] The utility model provides an automatic envelope supply and sorting machine, comprising:

[0031] An outer contour measuring component, the outer contour measuring component is used to obtain the outer contour dimension value of the envelope piece and the position information of the envelope piece;

[0032] A controller, wherein an input end of the controller is connected to the outer contour measurement component, for receiving the outer contour dimension value and the position information, and outputting a number start instruction and a position instruction;

[0033] The grabbing mechanism includes a plurality of suction cup assemblies and a plurality of suction cup drive assemblies, and the suction cup assemblies correspond to the suction cup drive assemblies one by one; the plurality of suction cup drive assemblies are respectively connected to the output end of the controller to receive the number start instructions and the position instructions, and the suction cup drive assemblies of corresponding positions and corresponding numbers drive the suction cup assemblies to negatively pressure the envelope.

[0034] In an embodiment, the controller may be a PLC; the suction cup group includes a plurality of suction cups 16, the number and size of the suction cups 16 may be adaptively adjusted according to the size and quality of the envelope in actual application, so that the suction cups 16 can absorb and grab envelopes of various specifications; the process of the suction cup drive assembly activating the suction cups 16 is as follows: the outer contour measuring assembly includes a first outer contour measuring instrument 4, the first outer contour measuring instrument 4 may be set as a 3D camera, the 3D camera may be set above the envelope to be entered into the express number with the aid of a bracket, so that the outer contour measuring assembly clearly and comprehensively collects the outer contour dimensions and positions of the envelope on the first station 1, the 3D camera transmits the outer contour dimension data to the PLC via an optical fiber, the PLC control system is provided with a corresponding data analysis module, calculates the envelope corresponding to the outer contour dimension and position, the position and number of the suction cups 16 corresponding to the activation, and outputs a drive instruction to activate the suction cup drive assembly, the suction cup drive assembly activates the position and number of the corresponding suction cups 16 for adsorbing the envelope. For example, a paper hard envelope has a length of about 324 mm and a width of about 229 mm. The PLC data analysis module is provided with a threshold corresponding to the size of the envelope. When the length is between 300 and 350 mm and the width is between 200 and 250 mm, the PLC controller outputs a start instruction for activating the number of four suction cups 16. The PLC controller activates the suction cup 16 located in the middle of the envelope according to the envelope position information collected by the 3D camera. In the embodiment, the envelope to be sucked is placed horizontally and stacked up and down.

[0035] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, the suction cup drive assembly includes a negative pressure generator, the suction cup assembly includes a suction cup 16, the negative pressure generator is connected to the suction cup 16, and the material of the suction cup 16 is silicone.

[0036] In an embodiment, the controller calculates and analyzes the suction cup 16 that needs to be activated based on the size and position of the envelope, and the suction cup drive component starts the negative pressure generator to absorb the air between the activated suction cup 16 and the surface of the envelope, so that the suction cup 16 adsorbs and grabs the envelope; preferably, the material of the suction cup 16 is set to silicone, and the material of the suction cup 16 and the number and size of the suction cup 16 can be set according to actual working conditions.

[0037] Furthermore, according to an automatic envelope feeding and sorting machine provided by the utility model, it also includes a first workstation 1 and a second workstation 2, the grabbing mechanism includes a first suction cup group, a fixed suction cup frame and a linear slide mechanism, the first suction cup group is connected to the fixed suction cup frame, the fixed suction cup frame is connected to the linear slide mechanism, the linear slide mechanism drives the first suction cup group to reciprocate horizontally, the first suction cup group translates the envelope at the first workstation 1 to the second workstation 2, and the outer contour measurement component is fixedly set at the first workstation 1.

[0038] In an embodiment, the linear slide mechanism includes a linear slide 14 and a first servo motor 6. The linear slide 14 is installed on a support frame. The first servo motor 6 can be installed on the support frame, close to one end of the linear slide 14. The first servo motor 6 is connected to and drives the fixed suction cup frame to move back and forth along the linear slide 14; the linear slide mechanism is connected to the controller.

[0039] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, it also includes an envelope code reading system, the envelope code reading system includes a first code reading mechanism and a second code reading mechanism, the first code reading mechanism and the second code reading mechanism respectively scan the two outer sides of the same envelope, the first code reading mechanism scans the express delivery number on one outer side of the envelope on the first station, the second station 2 is a perspective window, the second code reading mechanism scans the express delivery number on the other outer side of the envelope on the second station 2 through the perspective window, and the first code reading mechanism and the second code reading mechanism are connected to the controller.

[0040] In the embodiment, the first code reading mechanism includes a first code reader, and the second code reading mechanism includes a second code reader 5. Both the first code reader and the second code reader 5 can adopt 3D cameras, preferably, with pixels of more than 5 million Px; the first code reader can be arranged above the first suction cup group. Preferably, since the first contour measuring instrument 4 can be set as a 3D camera, the express number reading function can be realized. In this embodiment, the first contour measuring instrument 4 can be used to realize the function of the first code reader; the perspective window can adopt tempered glass; the second code reader is arranged below the perspective window. The setting positions of the first code reader and the second code reader 5 enable the envelope code reading system to obtain the express number information when the express number is on the front or / back of the envelope and transmit the express number information to the controller.

[0041] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, it also includes a third workstation 3, which is close to the second workstation 2; the grabbing mechanism also includes a second suction cup group, and the second suction cup group and the first suction cup group are respectively located at both ends of the fixed suction cup frame along the length direction of the fixed suction cup frame; the second suction cup group is used to place the envelope of the second workstation 2 on the third workstation 3.

[0042] In an embodiment, the third workstation 3 may be configured as a conveyor belt, and the conveyor belt is used to convey envelopes.

[0043] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, it also includes a guide rail 13 and a servo lifting mechanism 12, the first station 1 is arranged on the guide rail 13, the guide rail 13 is provided with a gap, the servo lifting mechanism 12 passes through the gap to drive the first station 1 to move back and forth, so as to push the envelope to the grabbing mechanism, and the servo lifting mechanism 12 is connected to the controller.

[0044] In an embodiment, the servo lifting mechanism 12 includes a third servo motor and a pushing device, the third servo motor is connected to the pushing device, the pushing device is located below the first station 1, when the first station 1 places the envelope, the pushing device passes through the gap of the guide rail 13 and contacts the envelope, each envelope is placed horizontally, that is, the largest surface of the envelope, the surface with the express number or the opposite side with the express number contacts the suction cup 16; multiple envelopes are arranged in a stack in the vertical direction and placed in the first station 1. Preferably, a regular baffle is provided around the first station 1, the regular baffle restricts multiple envelopes to the first station 1, and prepares for the suction cup 16 to absorb and grasp the envelope, the regular baffle is connected to a fourth servo motor, the fourth servo motor is connected to the controller, and drives the regular baffle to apply external force to the envelope at the first station 1 to make it regular and neat, after the envelope is regularized, the fourth servo motor drives the regular baffle to return to the set position of the regular baffle. The third servo motor drives the pushing device to move upward in the gap, and lifts the multiple envelopes one by one to the working height of the suction cup 16 to complete the grabbing action in cooperation with the suction cup 16; the third servo motor is connected to the controller, and the controller calculates the distance that the third servo motor drives the pushing device to move toward the suction cup 16 according to the distance gap between the envelope on the first station 1 and the suction cup 16 measured and collected by the first contour measuring instrument 4, and issues a driving instruction to drive the third servo motor. After all the envelopes at the first station 1 are sucked and grabbed by the suction cup 16, the servo lifting mechanism 12 returns to the bottom end of the guide rail 13, waiting for the envelopes to be entered into the express number to be delivered to the first station 1.

[0045] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, the guide rail 13 is provided with a cache station 11, the cache station 11 is connected to a driving slide rail mechanism, the driving slide rail mechanism is connected to the controller, and drives the cache station to move back and forth along the length direction of the guide rail 13, and the cache station 11 transfers the envelope to the first station 1.

[0046] In the embodiment, the buffer station 11 is used to place envelopes to be sorted and entered into express numbers. A plurality of envelopes are placed horizontally and arranged in a stack in the vertical direction. Preferably, the buffer station is provided with a baffle along the length direction of the guide rail 13. The length direction of the guide rail 13 is the direction in which the envelopes are conveyed, and the baffle limits the position of the envelopes. Pushing claws 17 are provided on both sides of the movement direction of the buffer station 11. The pushing claws 17 are connected to the driving slide rail mechanism and can move back and forth in the gap of the guide rail 13 along the length direction of the guide rail 13. The driving slide rail mechanism is provided with a second A servo motor 15 and a linear slide 10, wherein the second servo motor 15 is connected to a push catch 17, wherein the push catch 17 is connected to the linear slide 10, wherein the guide rail 13 is provided with a gap along the length direction of the guide rail 13, wherein the push catch 17 passes through the gap of the guide rail 13, and wherein the second servo motor 15 drives the push catch 17 on the linear slide 10 along the length direction of the guide rail 13 to push the envelope toward the first station 1; wherein the second servo motor 15 is connected to the controller, wherein the controller controls the moving direction of the push catch 17 driven by the second servo motor 15. In an embodiment, according to actual needs, the guide rail 13 can be provided with multiple cache stations 11. The end of the guide rail 13 away from the first station 1 is provided with a return plate, and the return plate is connected to the fifth servo motor. Before the envelope pieces on the cache station 11 are transmitted, the fifth servo motor drives the return plate to squeeze the envelope pieces on the cache station 11 to improve the neatness of the arrangement and stacking of the envelope pieces; the end of the guide rail 13 away from the first station 1 is provided with an early warning device, and when the push-stop claw 17 returns to the end of the guide rail 13 and no envelope pieces are placed at the cache station, the early warning device alarms.

[0047] Furthermore, according to the automatic envelope supply and sorting machine provided by the utility model, a movable blocking plate 8 is provided between the buffer station 11 and the first station 1 , and the blocking plate 8 is connected to the linear cylinder 7 .

[0048] In an embodiment, a blocking plate 8 is provided between the cache station 11 and the first station 1, and the blocking plate is connected to the linear cylinder 7. When there is no envelope at the first station 1, the linear cylinder 7 drives the blocking plate 8 to disengage from the guide rail 13, so that the envelope at the cache station 11 is transferred to the first station 1; when the envelope is placed at the first station 1, the blocking plate 8 prevents the envelope from staying at the cache station 11; the linear cylinder 7 is connected to the controller, and the controller controls the action of the linear cylinder driving the blocking plate 8.

[0049] Furthermore, according to an automatic envelope supply and sorting machine provided by the utility model, the third workstation 3 is provided with a servo conveyor belt mechanism and an envelope piece contour scanning component, the servo conveyor belt mechanism and the envelope piece contour scanning component are connected to the controller, the envelope piece contour scanning component scans the envelope piece contour and transmits the contour scanning result to the controller, the controller issues an envelope piece sorting instruction, the servo conveyor belt mechanism receives the envelope piece sorting instruction, and transmits the envelope piece to the corresponding process.

[0050] In an embodiment, the envelope contour scanning component includes a second contour measuring instrument 9 and an optical fiber. The second contour measuring instrument 9 can be set as a 3D camera. The servo conveyor mechanism includes a conveyor belt and a motor. The second suction cup group places the envelope on the conveyor belt. The 3D camera is arranged above the conveyor belt, scans the envelope on the conveyor belt, and transmits the scanning result to the controller through the optical fiber. The controller identifies the envelope with abnormal conditions such as wrinkles, curling, unreadable express number or multiple envelopes stuck together according to the data information transmitted by the envelope contour scanning component, the contour measurement component, the first code reading mechanism and the second code reading mechanism. The controller controls the conveyor belt to transport the abnormal envelope to the abnormal part area, and transports the normal envelope that meets the setting value of the controller to the next process.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An automatic envelope supply and sorting machine, characterized in that: include: An outer contour measuring component, the outer contour measuring component is used to obtain the outer contour dimension value of the envelope piece and the position information of the envelope piece; A controller, wherein an input end of the controller is connected to the outer contour measurement component, for receiving the outer contour dimension value and the position information, and outputting a number start instruction and a position instruction; A gripping mechanism, the gripping mechanism comprising a plurality of suction cup assemblies and a plurality of suction cup drive assemblies, the suction cup assemblies corresponding to the suction cup drive assemblies one by one; The plurality of suction cup drive assemblies are respectively connected to the output end of the controller to receive the number start instruction and the position instruction, and the suction cup drive assemblies of corresponding positions and corresponding numbers drive the suction cup assemblies to absorb the envelope with negative pressure.

2. The automatic envelope supply and sorting machine according to claim 1, characterized in that: The suction cup drive assembly includes a negative pressure generator, the suction cup assembly includes a suction cup, the negative pressure generator is connected to the suction cup, and the suction cup is made of silicone.

3. The automatic envelope supply and sorting machine according to claim 2, characterized in that: It also includes a first workstation and a second workstation, the grabbing mechanism includes a first suction cup group, a fixed suction cup frame and a linear slide mechanism, the first suction cup group is connected to the fixed suction cup frame, the fixed suction cup frame is connected to the linear slide mechanism, the linear slide mechanism drives the first suction cup group to reciprocate horizontally, the first suction cup group translates the envelope piece of the first workstation to the second workstation, and the outer contour measurement component is fixedly set at the first workstation.

4. The automatic envelope supply and sorting machine according to claim 3, characterized in that: It also includes an envelope code reading system, which includes a first code reading mechanism and a second code reading mechanism. The first code reading mechanism and the second code reading mechanism respectively scan two outer sides of the same envelope. The first code reading mechanism scans the express number on one outer side of the envelope on the first station, and the second station is a perspective window. The second code reading mechanism scans the express number on the other outer side of the envelope on the second station through the perspective window. The first code reading mechanism and the second code reading mechanism are connected to the controller.

5. The automatic envelope supply and sorting machine according to claim 4, characterized in that: It also includes a third workstation, which is close to the second workstation; the grabbing mechanism also includes a second suction cup group, and the second suction cup group and the first suction cup group are respectively located at both ends of the fixed suction cup frame along the length direction of the fixed suction cup frame; the second suction cup group is used to place the envelope of the second workstation on the third workstation.

6. The automatic envelope feeding and sorting machine according to any one of claims 3 to 5, characterized in that: It also includes a guide rail and a servo lifting mechanism, the first station is arranged on the guide rail, the guide rail is provided with a gap, the servo lifting mechanism passes through the gap to drive the first station to move back and forth, so as to push the envelope to the grabbing mechanism, and the servo lifting mechanism is connected to the controller.

7. The automatic envelope supply and sorting machine according to claim 6, characterized in that: The guide rail is provided with a buffer station, which is connected to a driving slide rail mechanism. The driving slide rail mechanism is connected to the controller and drives the buffer station to move back and forth along the length direction of the guide rail. The buffer station transfers the envelope to the first station.

8. The automatic envelope supply and sorting machine according to claim 7, characterized in that: A movable blocking plate is provided between the buffer station and the first station, and the blocking plate is connected to the linear cylinder.

9. The automatic envelope supply and sorting machine according to claim 5, characterized in that: The third workstation is provided with a servo conveyor belt mechanism and an envelope piece contour scanning component, and the servo conveyor belt mechanism and the envelope piece contour scanning component are connected to the controller. The envelope piece contour scanning component scans the envelope piece contour and transmits the contour scanning result to the controller. The controller issues an envelope piece sorting instruction, and the servo conveyor belt mechanism receives the envelope piece sorting instruction and transmits the envelope piece to the corresponding process.

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