Multi-station unpowered automatic distance weighing and conveying device

Abstract

The multi-station non-powered automatic distance weighing and conveying device described in the present invention proposes a weighing and conveying line specifically for rollable columnar carriers, so that distance and weighing can be sequentially performed at multiple stations by using a forklift to insert and remove the discs, thereby achieving both non-powered automatic conveying and weighing data tracking and uploading, thereby achieving the design goals of precise distance, energy-saving conveying, and fully automated data management and control. At least two weighing stations, an information binding station, and at least two insertion stations are sequentially connected along the conveying direction. Two parallel rolling rails are respectively provided on the top of the frames of the weighing station, the information binding station, and the insertion station. The rolling rails between the several stations are sequentially connected to form a continuous conveying roller that carries the discs. A set of blocking and release mechanisms with the same structural characteristics are respectively provided at the weighing station and the information binding station.

Description

Technical Field

[0001] The present invention relates to a multi-station unpowered automatic distance weighing device used in the transportation process of a rollable columnar carrier, and belongs to the field of intelligent manufacturing and logistics transportation. Background Art

[0002] As automation and intelligent manufacturing technologies become increasingly mature, industrial production processes rely more and more on automated control technologies. Automated equipment has become the inevitable choice to replace traditional manual labor. More and more intelligent factories have quietly emerged, and lean production has become the goal pursued by enterprises.

[0003] Rollable cylindrical carriers are mainly used for the transportation and storage of slender, wrappable and bound materials, such as those widely used in the manufacturing and transportation of cables, ropes and other industries. At present, domestic and foreign cable manufacturers have put forward the demand for intelligent transformation in the context of applying information automation management systems. During the production and transportation process in the workshop, cables are no longer carried by traditional manual labor or manual forklifts. Instead, intelligent unmanned AGVs are used to transport I-shaped disc carriers (referred to as discs) wrapped with cables. In this process, in order to know the weight of each product and the material loss in the entire manufacturing process from raw materials to finished products, each disc with wrapped materials needs to be weighed, and the data information needs to be uploaded to the management system immediately after weighing. After weighing, the disc continues to be used as a carrier for material transportation.

[0004] The existing conveying and weighing devices mainly rely on manual forklifts to place the trays individually on the weighing device. After weighing, the manual forklift will then remove the trays and transport them away or transfer them to the power transmission line for subsequent production processes. The current equipment and processes have the following main shortcomings: First, the use of forklifts to insert trays lacks dedicated spacing and weighing devices. There is a large deviation in the spacing between the trays before and after insertion, and it relies solely on the operator's operating skills and proficiency, resulting in poor controllability. When the forklift's parking position deviates significantly, direct insertion will cause significant impact and damage to the trays, and it is more likely to accelerate abnormal wear of the trays, reducing the service life of the trays. Second, the production efficiency of inserting a single tray is low. When inserting two or more trays, there is currently a lack of dedicated spacing, weighing, and conveying lines. Not only can the weighing information not be automatically identified and uploaded, but the traceability is also poor and the error rate is high. Third, the existing disc conveying line still uses a motor-driven line to realize the disc transportation. While consuming a lot of energy, it is necessary to install a limit positioning tool specifically for rolling cylindrical carriers (such as I-spool discs). This is not only costly and noisy during operation, but also causes great damage to the raceway friction and is prone to mechanical failure.

[0005] In view of this, this patent application is filed. Summary of the Invention

[0006] The multi-station unpowered automatic distance weighing and conveying device described in the present invention aims to solve the problems existing in the above-mentioned prior art and proposes a weighing and conveying line specifically for rollable cylindrical carriers, so as to cooperate with the use of a forklift to insert the plate to implement distance and weighing in sequence at multiple stations, and realize both unpowered automatic conveying and weighing data tracking and uploading, thereby achieving the design goals of precise distance, energy-saving conveying and fully automated data management and control.

[0007] In order to achieve the above-mentioned design purpose, the multi-station non-powered automatic distance weighing and conveying device described in the present application is sequentially connected with at least two weighing stations, an information binding station, and at least two insertion stations along the conveying direction, and two sections of parallel rolling rails are respectively provided on the top of the frames of the weighing station, the information binding station and the insertion station, and the rolling rails between several stations are sequentially connected to form a continuous conveying roller for carrying discs; a group of blocking and releasing mechanisms with the same structural characteristics are respectively provided on the weighing station and the information binding station; the weighing station includes a weighing platform frame with four bases each fixedly connected to a weighing module, and two sections of longitudinally extending parallel rolling rails are provided on the top of the weighing platform frame. A rolling rail is provided with a blocking and releasing mechanism on the weighing platform frame; the blocking and releasing mechanism includes a group of rolling baffles driven by a blocking and releasing cylinder to flip back and forth vertically, and a blocking shaft is respectively provided on at least two branch ends of the rolling baffle, the axial center of the rolling baffle is sleeved on the rotating shaft, and the two ends of the rotating shaft are respectively installed on the weighing platform frame; one branch end of the rolling baffle is connected to the driving rod of the blocking and releasing cylinder, and under the drive of the blocking and releasing cylinder, the rolling baffle as a whole realizes clockwise or counterclockwise swing around the axial center of the rotating shaft, thereby changing the vertical position and height of the blocking shaft arranged on the other two branch ends of the rolling baffle, and the blocking shaft implements the blocking limit and release pushing force for the disk.

[0008] Furthermore, the weighing station is provided with a limit block for axial limitation at the through-hole where the baffle shaft passes through the rolling baffle. The axial center of the rolling baffle is sleeved on the rotating shaft through a flat key, and the two ends of the rotating shaft are respectively installed on the weighing platform frame through diamond-shaped seat bearings.

[0009] Furthermore, a spacing of 3 to 8 mm is maintained between the weighing platform frames of two adjacent weighing stations.

[0010] Furthermore, each weighing module is fixedly connected to the weighing module top plate transition plate at its bottom, and several weighing module top plate transition plates are fixedly connected to the same adjustment pad, which is fixedly connected to the ground via chemical bolts.

[0011] Furthermore, a group of rubber buffer pads, two groups of parallel linear guide bars and guide blocks are provided on the top side of the weighing platform frame, and the guide blocks have an inclined surface inclined toward the inner center.

[0012] Furthermore, a photoelectric sensor for detecting and sensing the plate is provided on the top of the weighing platform frame.

[0013] Furthermore, the information binding station has an information binding frame, and a reading and writing device for reading the RFID chip information on the disk and two parallel rolling rails extending longitudinally are arranged on the top of the information binding frame, and a blocking and releasing mechanism is arranged at the information binding frame.

[0014] Furthermore, the insertion and removal station has an insertion and removal station frame, and a connecting rod lifting mechanism is arranged in the insertion and removal station frame; the connecting rod lifting mechanism includes a horizontally arranged lifting plate, the bottom of the lifting plate is connected to one end of the first connecting rod, and the two sides of the lifting plate are symmetrically movably nested in two sets of linear guide rails through two sets of sliders, and the linear guide rails are fixedly connected to the inner side of the insertion and removal station frame; the first connecting rod, the second connecting rod, and the third connecting rod are movably connected end to end in sequence through a pin shaft, the bottom end of the third connecting rod is connected to the insertion and removal station frame, and the end of the driving rod of the cylinder is connected to the third connecting rod through a bearing.

[0015] Furthermore, when the tray rolls to the insertion and removal station, the driving rod of the cylinder extends and pushes the connecting rod assembly composed of the first connecting rod, the second connecting rod, and the third connecting rod, and the lifting plate rises vertically to a height flush with the rolling rail. At this time, the pins connecting the first connecting rod, the second connecting rod and the third connecting rod are on the same vertical straight line, and the connecting rod assembly forms a support dead point connection line.

[0016] Furthermore, two groups of disk positioning support shafts are fixedly connected in parallel along the insertion and removal station frame.

[0017] In summary, the multi-station unpowered automatic distance weighing and conveying device described in this application has the following advantages:

[0018] 1. This application is a weighing and conveying line specifically for rollable cylindrical carriers (such as I-shaped wheel discs). It can cooperate with various forklifts to insert and remove discs for accurate weighing on the equipment. The weighing data of each disc is uploaded in real time, thereby achieving the automated management requirements of information binding and tracking upload, with high traceability and low error rate.

[0019] 2. Spacing, weighing and conveying can be implemented sequentially at multiple workstations of this application. The level of automation management and conveying efficiency are both high, which is conducive to improving the quality of material insertion and handling and other subsequent manufacturing processes.

[0020] 3. This application has an automatic spacing and plate guidance design, which reduces the spacing and positioning requirements in the process of transporting several plates by forklifts (whether manual forklifts or unmanned AGV forklifts), which is conducive to improving the level of automated control. At the same time, it also effectively avoids damage to the plates due to collisions, improves the service life of the plates and on-site production safety.

[0021] 4. This application adopts non-powered transportation between multiple stations, and uses the disc itself to implement rolling transmission along the sloped roller track. It is not only beneficial to reduce the transmission wear of the disc, but also speeds up the transportation rhythm based on the integration of intelligent information management technology, which is beneficial to improve production efficiency, optimize the on-site equipment layout, and save floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the multi-station unpowered automatic distance weighing and conveying device described in this application;

[0023] Figure 2 and Figure 3 They are structural schematic diagrams of different sides of the weighing station;

[0024] Figure 4 and Figure 5 They are structural schematic diagrams of different sides of the blocking and releasing mechanism;

[0025] Figure 6 This is a schematic diagram of the guide when the tray is placed;

[0026] Figure 7 It is a schematic diagram of the distance between adjacent weighing stations;

[0027] Figures 8 to 10 The diagrams are respectively of the transport of the tray between the stabilizing station, the information binding station and the insertion and removal station;

[0028] Figure 11 and Figure 12 They are structural schematic diagrams of different sides of the connecting rod lifting mechanism of the insertion and removal station;

[0029] Figure 13 It is a structural diagram of the insertion and extraction station;

[0030] Figure 14 and Figure 15 They are schematic diagrams of the process of positioning the tray at the insertion and removal stations. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and examples.

[0032] Example 1, as Figure 1As shown, the multi-station non-powered automatic distance weighing and conveying device described in the present application is connected in sequence along the conveying direction with a first weighing station 100, a second weighing station 200, an information binding station 300, a first insertion station 400 and a second insertion station 500, and two sections of parallel rolling rails 600 are respectively provided on the top of the frame of the first weighing station 100, the second weighing station 200, the information binding station 300, the first insertion station 400 and the second insertion station 500. The rolling rails 600 between the above-mentioned several stations are connected in sequence to form a continuous conveying roller for carrying the plate, and the conveying roller extends obliquely from the first weighing station 100 toward the second insertion station 500.

[0033] A set of blocking and releasing mechanisms with the same structural features are respectively provided on the first weighing station 100, the second weighing station 200 and the information binding station 300;

[0034] The first weighing station 100 and the second weighing station 200 , the first inserting and removing station 400 and the second inserting and removing station 500 respectively have the same structural features.

[0035] Using a dual-link AGV700, two spool discs 800 wrapped with cables are simultaneously placed at the first weighing station 100 and the second weighing station 200. After being weighed and recorded, the spool discs 800 are rolled along the conveyor track under their own weight to the information binding station 300, where the information is read, identified, and bound. Subsequently, the spool discs 800 are rolled along the conveyor track under their own weight to the first insertion and removal station 400 and the second insertion and removal station 500. After being accurately positioned at the specified distance, the dual-link AGV700 simultaneously removes and transfers the two spool discs 800.

[0036] like Figures 2 to 7 As shown, the first weighing station 100 and the second weighing station 200 have the same structure. Taking the first weighing station 100 as an example, it includes a weighing platform frame 1 with four bases each fixedly connected to a weighing module 10. Two rolling rails 600 extending longitudinally are arranged in parallel on the top of the weighing platform frame 1. A blocking and releasing mechanism is provided on the weighing platform frame 1.

[0037] The blocking and releasing mechanism comprises a set of rolling baffles 3 that are driven by a blocking and releasing cylinder 15 to reciprocate in the vertical direction. A blocking shaft 4 is axially mounted on at least two branch ends of the rolling baffle 3. A limit block 12 for axial limiting is disposed at the through hole where the blocking shaft 4 passes through the rolling baffle 3.

[0038] The axial center of the rolling baffle 3 is sleeved on the rotating shaft 2 through a flat key 16, and both ends of the rotating shaft 2 are respectively installed on the weighing platform frame 1 through diamond seat bearings 14;

[0039] One branch end of the rolling baffle 3 is connected to the drive rod of the blocking and releasing cylinder 15, which is fixedly connected to the weighing platform frame 1 via the cylinder mounting base 5. Driven by the blocking and releasing cylinder 15, the drive rod of the blocking and releasing cylinder 15 extends or retracts, pulling the rolling baffle 3 as a whole to swing clockwise or counterclockwise around the axial center of the rotating shaft 2. This in turn changes the vertical position and height of the blocking shaft 4 provided at the other two branch ends of the rolling baffle 3. Ultimately, the blocking shaft 4 applies the blocking, limiting, and releasing force to the I-shaped wheel disc 800.

[0040] Specifically, when a dual-axle AGV 700 is used to place a spool disc 800 on the inclined rolling rails 600 at the first and second weighing stations 100 and 200, at least one blocking shaft 4, which is driven by the blocking release cylinder 15, stops and raises, preventing the spool disc 800 from rolling along the rolling rails 600, allowing the spool disc 800 to remain stationary on the rolling rails 600. After the dual-axle AGV 700 is withdrawn, the weighing module 10 can be used to weigh the spool disc 800, and the relevant weight data can be temporarily stored.

[0041] In order to ensure that the weighing data at the first weighing station 100 and the second weighing station 200 do not interfere with and affect each other, a distance of 5 mm is maintained between the weighing platform frames 1 of the first weighing station 100 and the second weighing station 200 .

[0042] After weighing is completed, the driving rod of the blocking and releasing cylinder 15 of the second weighing station 200 retracts, and the rolling baffle 3 rotates clockwise, lowering the baffle shaft 4 located in front of the spool disc 800 and raising the baffle shaft 4 located in the rear. Under the dual action of its own weight and the forward thrust of the rear baffle shaft 4, the spool disc 800 rolls along the inclined rolling track 600 to the information binding station 300. After the current spool disc 800 completes information identification and weight data binding and rolls from the information binding station 300 to the second insertion station 500, the above-described operation is performed on the spool disc 800 at the first weighing station 100, i.e., it rolls from the first weighing station 100 along the inclined rolling track 600 to the information binding station 300 for information identification and weight data binding, and then rolls to the first insertion station 400.

[0043] In order to improve the accuracy of data obtained under static weighing conditions, a design scheme that reflects the stability of solid-state connection is that each weighing module 10 is fixedly connected to the weighing module top plate transition plate 9 at its bottom, and the four weighing module top plate transition plates 9 are simultaneously fixedly connected to the same adjustment pad 6, and the adjustment pad 6 is fixedly connected to the ground through chemical bolts 17.

[0044] In order to improve the limiting stability of the I-shaped wheel disc 800, a set of rubber cushions 13, two sets of parallel linear guide strips 8 and guide blocks 7 are provided on the top side of the weighing platform frame 1. The guide blocks 7 have an inclined surface inclined toward the inner center.

[0045] When the double-string AGV700 places the I-wheel disc 800 wrapped with cables on the weighing platform frame 1 of the first weighing station 100 or the second weighing station 200, the rubber buffer pad 13 provides a buffer for the instantaneous force of placing the disc to prevent overturning; the linear guide bar 8 and the guide block 7 provide limitation and guidance. When the I-wheel disc 800 deviates from the vertical center of the weighing platform frame 1, the inclined surface on the guide block 7 provides horizontal guidance to align the I-wheel disc 800, which is conducive to accurate docking between the two.

[0046] Furthermore, a photoelectric sensor 11 for detecting and sensing the spool disc 800 is provided on the top of the weighing platform frame 1 .

[0047] like Figures 8 to 10 As shown, the information binding station 300 has an information binding frame 31, and a reading and writing device 32 for reading the information of the RFID chip 900 on the I-shaped wheel disc 800 is arranged on the top of the information binding frame 31, as well as two parallel sections of rolling rails 600 extending along the longitudinal direction. A blocking and releasing mechanism with the above structural features is arranged at the information binding frame 31, which will not be repeated here.

[0048] When the spool disc 800 rolls from the first or second weighing station 100 or 200 along the inclined rolling track 600 to the information binding station 300, the blocking and release cylinder 15 located there extends its drive rod, causing the rolling baffle 3 to rotate counterclockwise. The spool disc 800 is then stopped by the baffle shaft 4. The reader / writer device 32 then reads the information from the RFID chip 900 on the spool disc 800 and binds it to the previously weighed data. This bound data is then uploaded to the control unit's PLC (not shown).

[0049] After the information binding is completed, the blocking and releasing mechanism of the information binding station 300 is started again, the driving rod of the blocking and releasing cylinder 15 is retracted, the rolling baffle 3 rotates clockwise, the front baffle shaft 4 is lowered, and the rear baffle shaft 4 is raised. The I-shaped wheel disc 800 rolls along the inclined rolling rail 600 to the first insertion and removal station 400 or the second insertion and removal station 500 under the dual action of its own weight and the forward thrust of the rear baffle shaft 4.

[0050] Furthermore, in order to ensure the stability of the respective limit positions of the I-wheel disc 800 and the accuracy of the acquisition and binding of the operation data, a distance of 5 mm is maintained between the weighing platform frame 1 of the second weighing station 200 and the information binding frame 31 of the information binding station 300, as well as between the information binding frame 31 of the information binding station 300 and the insertion station frame 411 of the first insertion station 400.

[0051] like Figures 11 to 15 As shown, the first insertion station 400 and the second insertion station 500 have the same structure. Taking the first insertion station 400 as an example, it has an insertion station frame 411, and two sets of disk positioning support shafts 412 are fixedly connected horizontally and parallelly along the insertion station frame 411, and a connecting rod lifting mechanism is provided in the insertion station frame 411.

[0052] Specifically, the connecting rod lifting mechanism includes a horizontally arranged lifting plate 41, the bottom of which is connected to one end of a first connecting rod 43, and the two sides of the lifting plate 41 are symmetrically movable and nested in two sets of linear guide rails 42 through two sets of sliders, and the linear guide rails 42 are fixedly connected to the inner side of the insertion and removal station frame 411;

[0053] The first connecting rod 43, the second connecting rod 44, and the third connecting rod 45 are movably connected end to end via a pin 47. The bottom end of the third connecting rod 45 is connected to a support 46 fixed to the insertion and removal station frame 411.

[0054] The cylinder 48 is fixedly mounted on the insertion and removal station frame 411 through the cylinder seat 49, and the end of the driving rod of the cylinder 48 is connected to the third connecting rod 45 through a bearing; when the driving rod is extended or retracted, the third connecting rod 45 can drive the connecting rod assembly composed of the first connecting rod 43, the second connecting rod 44, and the third connecting rod 45 to swing and adjust the vertical height of the lifting plate 41.

[0055] When the spool disc 800 rolls to the first insertion and removal station 400, the drive rod of the cylinder 48 extends to push the connecting rod assembly consisting of the first connecting rod 43, the second connecting rod 44, and the third connecting rod 45, causing the lifting plate 41 to rise vertically to a height flush with the rolling rail 600. At this time, the pins 47 connecting the first connecting rod 43, the second connecting rod 44, and the third connecting rod 45 are aligned on the same vertical line, and the connecting rod assembly forms a support dead point connection line 1000. In other words, when the connecting rod assembly is in the dead point position, the pressure lines exerted on the first connecting rod 43, the second connecting rod 44, and the third connecting rod 45 by the spool disc 800 coincide with the lifting plate 41. Therefore, even if the weight of the spool disc 800 is large when rolling past, the lifting plate 41 can still maintain a high bearing force without sinking. The output power of the cylinder 48 is relatively low, which can meet the operating requirements. Therefore, the application of this application allows the selection of a cylinder with smaller size and operating parameters, making the entire conveying device more compact and occupying less space, thereby reducing the overall size of the equipment.

[0056] When the two spool discs 800 roll to the first insertion and removal station 400 and the second insertion and removal station 500 respectively, the two spool discs 800 are supported on the lifting plate 41 and are close to each other. Figure 14 shown.

[0057] The PLC of the control assembly sends a signal to the cylinders 48 of the two workstations, and the drive rods of the cylinders 48 retract, releasing the support dead point connection line 1000 of the connecting rod assembly formed by the first connecting rod 43, the second connecting rod 44, and the third connecting rod 45, so as to drive the lifting plate 41 to descend vertically. The spool disc 800 descends with the lifting plate 41 and falls on the disc positioning support shafts 412 on both sides. Figure 15 As shown, the center distance between the two spool discs 800 changes, that is, automatic spacing is achieved.

[0058] After the automatic spacing is completed, the double-string AGV700 simultaneously inserts and transfers the two I-shaped wheel discs 800 from the first insertion station 400 and the second insertion station 500.

[0059] As described above, similar technical solutions can be derived from the solutions presented in the drawings and description. Any modifications, equivalent variations, and modifications to the shapes, sizes, connection methods, and mounting structures of the components described above, as well as minor adjustments to the positions and structures of the components, made in accordance with the technical essence of the present invention, without departing from the structural content of the present invention, shall remain within the scope of the technical solution of the present invention.

Claims

1. A multi-station unpowered automatic distance weighing and conveying device, characterized by: Connect in sequence along the conveying direction There are at least two weighing stations, an information binding station, and at least two insertion and extraction stations. Two parallel rolling rails are respectively provided on the top of the frames of the weighing station, the information binding station, and the insertion and extraction station. The rolling rails between the stations are sequentially connected to form a continuous conveying roller for carrying the tray. The conveying roller extends obliquely from the first weighing station toward the second insertion and extraction station. A set of blocking and releasing mechanisms with the same structural characteristics are respectively provided on the weighing station and the information binding station. The weighing station includes a weighing platform frame with four bases each fixedly connected to a weighing module, two rolling rails extending longitudinally are arranged in parallel on the top of the weighing platform frame, and a blocking and releasing mechanism is provided on the weighing platform frame; The blocking and releasing mechanism includes a set of rolling baffles driven by a blocking and releasing cylinder to reciprocate vertically. A baffle shaft is axially mounted on at least two branch ends of the rolling baffle. The axial center of the rolling baffle is sleeved on the rotating shaft, and the two ends of the rotating shaft are respectively mounted on the weighing platform frame. One branch end of the rolling baffle is connected to the driving rod of the blocking and releasing cylinder. Under the drive of the blocking and releasing cylinder, the rolling baffle as a whole swings clockwise or counterclockwise around the axial center of the rotation axis, thereby changing the vertical position and height of the blocking shafts arranged at the other two branch ends of the rolling baffle. The blocking shafts implement the blocking, limiting, and releasing pushing force on the disk. The information binding station has an information binding frame, a reading and writing device for reading the RFID chip information on the disk is provided on the top of the information binding frame, and two parallel rolling rails extending along the longitudinal direction are provided, and a blocking and releasing mechanism is provided at the information binding frame; The insertion and removal station has an insertion and removal station frame, and a connecting rod lifting mechanism is arranged in the insertion and removal station frame; the connecting rod lifting mechanism includes a horizontally arranged lifting plate, the bottom of the lifting plate is connected to one end of the first connecting rod, and the two sides of the lifting plate are symmetrically movably nested in two sets of linear guide rails through two groups of sliders, and the linear guide rails are fixedly connected to the inner side of the insertion and removal station frame; the first connecting rod, the second connecting rod, and the third connecting rod are movably connected end to end in sequence through a pin shaft, the bottom end of the third connecting rod is connected to the insertion and removal station frame, and the end of the driving rod of the cylinder is connected to the third connecting rod through a bearing.

2. The multi-station unpowered automatic distance weighing and conveying device according to claim 1 is characterized in that: The weighing station is provided with a limit block for axial limitation at the through-hole where the baffle shaft passes through the rolling baffle. The axial center of the rolling baffle is sleeved on the rotating shaft through a flat key, and the two ends of the rotating shaft are respectively installed on the weighing platform frame through diamond-shaped seat bearings.

3. The multi-station unpowered automatic distance weighing and conveying device according to claim 1 or 2, characterized in that: Maintain a distance of 3 to 8 mm between the weighing platform frames of two adjacent weighing stations.

4. The multi-station unpowered automatic distance weighing and conveying device according to claim 1 or 2, characterized in that: Each weighing module is fixedly connected to the weighing module top plate transition plate at its bottom, and several weighing module top plate transition plates are fixedly connected to the same adjustment pad, which is fixedly connected to the ground through chemical bolts.

5. The multi-station unpowered automatic distance weighing and conveying device according to claim 1 or 2, characterized in that: A plurality of rubber buffer pads, two sets of parallel linear guide strips and guide blocks are arranged on the top side of the weighing platform frame. The guide blocks have an inclined surface inclined toward the inner center.

6. The multi-station unpowered automatic distance weighing and conveying device according to claim 1 or 2, characterized in that: A photoelectric sensor for detecting and sensing the plate is arranged on the top of the weighing platform frame.

7. The multi-station unpowered automatic distance weighing and conveying device according to claim 1 is characterized in that: When the tray rolls to the insertion and removal station, the driving rod of the cylinder extends and pushes the connecting rod assembly composed of the first connecting rod, the second connecting rod and the third connecting rod, and the lifting plate rises vertically to a height flush with the rolling rail. At this time, the pins connecting the first connecting rod, the second connecting rod and the third connecting rod are on the same vertical straight line, and the connecting rod assembly forms a support dead point connection line.

8. The multi-station unpowered automatic distance weighing and conveying device according to claim 7 is characterized in that: Two groups of disk positioning support shafts are fixedly connected in parallel along the inserting and removing station frame.

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