Conveying and circulating mechanism for small packet flow intelligent production line

Abstract

The utility model discloses a conveying and circulating mechanism for a small packet flow intelligent production line, which comprises a track, and a conveying trolley used for moving among working units is arranged on the track; the conveying trolley comprises a trolley body base used for bearing the material box, a trolley head, a telescopic feeding mechanism used for conveying the material box to the working units on the two sides, and a walking driving mechanism installed in the trolley head and used for driving the conveying trolley to move to the designated position. The conveying and circulating mechanism can move among the working units along the track and can convey material boxes to the working units on the two sides of the track at the same time, and the material circulating efficiency and stability are improved.

Description

Technical Field

[0001] The utility model relates to the field of rhythm production assembly lines in industries such as clothing, luggage, and shoemaking, and specifically to a small-batch flow intelligent production line for industries such as clothing, luggage, and shoemaking. Background Art

[0002] The invention with the patent number 201210581544.2 discloses a rhythm assembly line capable of achieving the best knitting efficiency and its control method. In the production of the clothing industry, the "bundling" operation is commonly used. The existing equipment has low working efficiency. There are many in-process products in the workshop, the finished products are produced slowly, and it is not easy to detect quality problems in a timely manner. The technical solution disclosed in this patent includes a head cabinet assembly, an intermediate transmission cabinet, a conveyor belt, and a tail cabinet assembly. An intermediate transmission device is arranged between the head cabinet assembly and the tail cabinet assembly, and the conveyor belt is arranged in the intermediate transmission cabinet. This technical solution determines the workload and work quality of individuals, as well as the workload data and work quality data of the production group according to the personal information module of the assembly line and the counting module at the end of the assembly line, effectively improving the knitting efficiency of single-piece flow production and fundamentally solving the problem of difficult quality control in previous single-piece flow production. However, this rhythm assembly line still has technical problems such as difficult construction, inability to flexibly adjust the assembly line workstations and scale, low material conveying and turnover efficiency, and instability. Summary of the Invention

[0003] In view of the above technical problems, the utility model provides a conveying and turnover mechanism for a small-batch flow intelligent production line, which can move between various work units along a track and can transport material boxes to the work units on both sides of the track, improving the material turnover efficiency and stability.

[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows: A conveying and turnover mechanism for a small-batch flow intelligent production line includes a track, and a conveying trolley for moving between various work units is arranged on the track; the conveying trolley includes a vehicle body base for supporting a material box, a vehicle head, a telescopic feeding mechanism for transporting the material box to the work units on both sides, and a traveling driving mechanism installed in the vehicle head for driving the conveying trolley to move to a specified position.

[0005] To optimize the above technical solution, the utility model also includes the following improved technical solutions.

[0006] The above vehicle body base includes an inner long plate of the vehicle frame, an outer long plate of the vehicle frame, a wide plate of the vehicle frame, and a support plate; the vehicle head includes a front plate of the vehicle frame, a rear plate of the vehicle frame, a left plate of the vehicle frame, and a right plate of the vehicle frame.

[0007] The above-mentioned telescopic feeding mechanism includes two groups of drive plates slidably mounted on the vehicle body base, a fork plate slidably mounted on the drive plates, and a transfer motor for driving the two groups of drive plates to slide synchronously; finger-pushing devices are provided on both sides of the fork plate, and a finger-pushing motor for driving the finger-pushing devices to move is provided inside the fork plate.

[0008] The above-mentioned drive plates are slidably mounted on the front plate of the vehicle frame through the first slide rails, and the drive plates are slidably connected to the fork plate through the second slide rails; an upper belt is wound around the drive plates through upper belt pulleys, and a lower belt is wound around the drive plates through lower belt pulleys; the upper belt and the lower belt are arranged symmetrically left and right, one end of the upper belt is fixedly connected to the front plate of the vehicle frame, one end is fixedly connected to the rear side of the fork plate, one end of the lower belt is fixedly connected to the front plate of the vehicle frame, and one end is fixedly connected to the rear side of the fork plate.

[0009] The above-mentioned front plate of the vehicle frame is provided with a first synchronous belt, a driving wheel, and a driven wheel. The first synchronous belt is sleeved on the driving wheel and the driven wheel, and a fork rack is provided on the first synchronous belt; an upper rack meshing with the fork rack is provided on the drive plate; a rotating shaft is provided on the wide plate of the vehicle frame, and the rotating shaft is connected to the driving wheels on the front plates on both sides.

[0010] A first sprocket, a second sprocket, and a chain are provided at the rear side of the above-mentioned wide plate of the vehicle frame; the drive shaft of the transfer motor is connected to the first sprocket; the rotating shaft is connected to the second sprocket.

[0011] Upper slide grooves and lower slide grooves for installing pulley seats are provided on the left and right sides of the above-mentioned drive plates, and the upper belt pulleys and the lower belt pulleys are installed in the corresponding pulley seats.

[0012] The above-mentioned fork plate includes a fork front plate, a fork rear plate, and a fork top plate. A finger-pushing device mounting seat is provided inside the fork plate, and the finger-pushing device mounting seat is mounted on the fork rear plate; the drive shaft of the finger-pushing motor passes through the finger-pushing device mounting seat and is connected to the finger-pushing device.

[0013] Compared with the prior art, the conveying and transferring mechanism for the small-packet flow intelligent production line of the present utility model can move between various working units along the track, and at the same time can convey material boxes to the working units on both sides of the track, improving the material turnover efficiency and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of this embodiment.

[0015] Figure 2 is the three-dimensional structural schematic diagram of a single working unit.

[0016] Figure 3 is Figure 2 the enlarged view of part A in

[0017] Figure 4 is the three-dimensional structural schematic diagram of the conveying trolley.

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the conveying trolley after removing the installation shell.

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the conveying trolley when transferring the material box.

[0020] Figure 7 It is an exploded three-dimensional structural schematic diagram of the conveying and rotating mechanism.

[0021] Figure 8 It is an exploded three-dimensional structural schematic diagram of the conveying switch mechanism.

[0022] Figure 9 It is an exploded three-dimensional structural schematic diagram of the traveling drive mechanism. Specific implementation mode

[0023] The embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Figures 1 to 9 The structural schematic diagram of the present utility model is shown as follows.

[0025] The reference numerals therein are: mounting bracket 1, mounting vertical plate 2, workbench 3, material box 4, material placement position 5, left baffle 6, right baffle 7, rear baffle 8, front baffle 9, support frame 10, barcode scanner 11, barcode scanner 11 mounting bracket 12, baffle limit plate 13, groove 14, pull rod mounting bracket 15, pull rod 16, tension spring 17, bushing 18, pressing plate 19, loading and unloading table 20, track connecting frame 21, track 22, conveying trolley 23, inner long plate 24 of the vehicle frame, outer long plate 25 of the vehicle frame, wide plate 26 of the vehicle frame, first connecting portion 26a, second connecting portion 26b, support plate 27, connecting plate 28, limit guide wheel 29, mirror reflection optoelectronics 30, front plate 31 of the vehicle frame, rear plate 32 of the vehicle frame, left plate 33 of the vehicle frame, right plate 34 of the vehicle frame, laser induction 35, fork holding plate 36, front fork holding plate 36a, rear fork holding plate 36b, top fork holding plate 36c, finger 37, boss 37a, finger mounting seat 38, sensor mounting groove 38a, finger motor 39, first slide rail 40, first telescopic seat 41, second slide rail 42, second telescopic seat 43, transmission plate 44, upper chute 44a, lower chute 44b, pulley seat 45, upper belt pulley 46, upper belt 47, lower belt 48, screw 49, upper rack 50, fork holding rack 51, first synchronous belt 52, driving wheel 53, driven wheel 54, transfer motor 55, first sprocket 56, second sprocket 57, chain 58, rotating shaft 59, downward probing motor 60, downward probing motor mounting seat 61, lead screw mounting bracket 62, lead screw 63, fixing member 64, moving block 65, downward probing plate 66, traveling motor 67, reducer 68, traveling motor fixing seat 69, first synchronous wheel 70, second synchronous wheel 71, second synchronous belt 72, connecting shaft 73, traveling wheel 74, wheel axle 75, wheel axle sleeve 76, coupling 77.

[0026] The small package flow intelligent production line of the present utility model includes a mounting bracket 1, a workbench 3, a track 22, and a conveying trolley 23. The conveying trolley 23 moves back and forth on the track 22 of the small package flow intelligent production line, and transfers the material box 4 to the corresponding workbench 3 according to the set route map for the operator to operate.

[0027] As Figure 1 and Figure 2 shown, the mounting brackets 1 are arranged in a double row, adopting a modular structure, which is convenient for disassembly, assembly and line installation. An installation vertical plate 2 is provided on the outside of the mounting bracket 1, a workbench 3 is provided on the outside of the installation vertical plate 2, and one end of the workbench 3 is fixedly connected to the mounting bracket 1.

[0028] A material placement position 5 is provided on the mounting bracket 1. The material placement position 5 includes a left baffle 6, a right baffle 7, a rear baffle 8, a front baffle 9, a barcode scanner 11, and a pressing plate 19. The installation positions among the left baffle 6, the right baffle 7, the front baffle 9, and the rear baffle 8 are just enough to place a material box 4.

[0029] The workbench 3 is located above the material placement position 5, and the workbench 3 can match multiple material placement positions 5. When the material box 4 is full, the conveying trolley 23 moves the material box 4 to the next process, and the sewn materials can be stored in other material boxes 4 corresponding to the same workbench 3. The sewing work on the workbench 3 and the transportation work of the conveying trolley 23 do not affect each other, and the work efficiency is high.

[0030] In this embodiment, the number of workbenches 3 is fifty, and the number of material placement positions 5 matched with a single workbench 3 is three. According to needs, the position and number of workbenches 3 can be adjusted, and the number of workbenches 3 can be twenty to fifty, and the number of material placement positions 5 matched with a single workbench 3 can be one to three.

[0031] A support frame 10 is provided in the middle of the material placement position 5, and a scanner 11 mounting frame 12 is provided at the lower end of the support frame 10, and the scanner 11 is installed on the scanner 11 mounting frame 12. Since an RFID chip is provided in the material box 4, when the material box 4 enters or leaves the transfer seat, the scanner 11 identifies the information on the chip, feeds back information to the terminal in real time, and dynamically tracks and monitors its position.

[0032] like Figure 3 As shown, the mounting bracket 1 is provided with a baffle stopper plate 13, and the baffle stopper plate 13 is provided with a groove 14 for the front baffle 9 to move up and down. The lower surface of the mounting bracket 1 is provided with a pull rod mounting frame 15, and the lower end of the front baffle 9 is provided with a pull rod 16, and the pull rod 16 is sleeved with a tension spring 17. The bottom of the pull rod mounting frame 15 is provided with a shaft sleeve 18, and the lower end of the tension spring 17 is provided with a pressure plate 19, and the tension spring 17 passes through the shaft sleeve 18 and is connected to the pressure plate 19.

[0033] The pressure plate 19 of the material placement position 5 moves downward, the pressure plate 19 pulls the tension spring 17 downward, the pull rod 16 moves downward, and the pull rod 16 drives the front baffle 9 to move downward along the groove 14. At this time, the conveying trolley 23 can put the material box 4 into the material placement position 5. The pressure plate 19 moves upward, the pull rod 16 moves upward, the front baffle 9 moves upward, and the material box 4 is fixed in the material placement position 5.

[0034] The loading and unloading platform 20 is arranged at one end of the mounting bracket 1, and the height of the loading and unloading platform 20 is consistent with the height of the mounting bracket 1. A track connecting frame 21 is arranged inside the mounting bracket 1 and the loading and unloading platform 20, and the track connecting frame 21 connects the mounting bracket 1 and the loading and unloading platform 20. The track 22 is installed on the track connecting frame 21, and the conveying trolley 23 can pass through the loading and unloading platform 20 and the material placement position 5 on the mounting bracket 1 along the track 22.

[0035] According to the characteristics of the small package flow intelligent production line, a conveying trolley 23 for the small package flow intelligent production line is proposed. The conveying trolley 23 includes a vehicle body bracket, a conveying rotation mechanism, a forklift transfer driving mechanism, a conveying switch mechanism, and a traveling driving mechanism. The conveying trolley 23 moves back and forth on the track 22 through the traveling driving mechanism. The conveying trolley 23 pushes the material box 4 to the material placement position 5 or into the conveying trolley 23 through the conveying rotation mechanism. The conveying trolley 23 drives the pressing plate 19 of the material placement position 5 to move through the conveying switch mechanism, opening or closing the front baffle 9 of the material placement position 5.

[0036] As Figure 5 shown, the vehicle body bracket includes an inner long plate 24 of the vehicle frame, an outer long plate 25 of the vehicle frame, and a wide plate 26 of the vehicle frame. The wide plate 26 of the vehicle frame is in a "T" shape. Both sides of the wide plate 26 of the vehicle frame have a first connecting portion 26a and a second connecting portion 26b. The first connecting portions 26a on both sides of the two wide plates 26 of the vehicle frame connect the two outer long plates 25 of the vehicle frame, forming the vehicle body base of the conveying trolley 23. The pallet 27 is installed on the vehicle body base. The inner long plate 24 of the vehicle frame is installed inside the outer long plate 25 of the vehicle frame. The second connecting portions 26b on both sides of the two wide plates 26 of the vehicle frame connect the two inner long plates 24 of the vehicle frame.

[0037] A barcode scanner 11 is provided inside the vehicle body bracket. The barcode scanner 11 is installed at the upper end of the barcode scanner mounting bracket 12. Both ends of the barcode scanner mounting bracket 12 are fixed to the upper ends of the two connecting plates 28. The lower ends of the two connecting plates 28 are fixed to the two inner long plates 24 of the vehicle frame. The barcode scanner 11 on the conveying trolley 23 identifies the information of each material box 4 and feeds back the information to the terminal in real time to dynamically track and monitor its position.

[0038] Eight limit guide wheels 29 are provided on both sides of the bottom of the vehicle body bracket to limit the conveying trolley 23 from traveling along the track 22, so that no deviation or derailment accident will occur during its traveling motion. Four mirror reflection photoelectric sensors 30 are provided on the vehicle body bracket. Through the mirror reflection photoelectric sensors 30, it is detected whether the material box 4 is placed upright; whether there will be an obstacle when the conveying rotation mechanism picks up and places the material box 4 left and right, to avoid collision accidents.

[0039] The vehicle body bracket further includes a front plate 31 of the vehicle frame, a rear plate 32 of the vehicle frame, a left plate 33 of the vehicle frame, and a right plate 34 of the vehicle frame. The front plate 31 of the vehicle frame, the rear plate 32 of the vehicle frame, the left plate 33 of the vehicle frame, and the right plate 34 of the vehicle frame form the front of the conveying trolley 23. There is a front at both the front and rear of the conveying trolley 23. Four laser sensors 35 are provided on both sides of the two fronts. When the trolley moves on the track 22, through the laser sensors 35, it is detected whether there is an obstacle on the track 22 to avoid collision accidents.

[0040] As Figure 6 and Figure 7As shown in the figure, since there are two sets of conveyor transfer mechanisms with symmetrically distributed structures installed on the vehicle body bracket, the installation instructions for one conveyor transfer mechanism will be described, and the other will be installed symmetrically. The conveyor transfer mechanism includes a finger 37, a fork plate 36, a finger motor 39, a fork rack 51, and a first synchronous belt 52. A fork plate 36 is provided on the front side of the front frame plate 31. The fork plate 36 is composed of a front fork plate 36a, a rear fork plate 36b, and a top fork plate 36c.

[0041] There are two fingers 37 provided on both sides of the fork plate 36. A finger mounting seat 38 is provided inside the fork plate 36. The finger mounting seat 38 is installed on the front side of the rear fork plate 36b. The head of the finger 37 is rotatably installed on one side of the finger mounting seat 38. A boss 37a is provided at the tail of the finger 37, which cooperates with the sensor mounting groove 38a at the upper end of the finger mounting seat 38 to prevent the finger 37 from rotating and damaging the sensor, and improve the induction sensitivity. A finger motor 39 is provided on the other side of the finger mounting seat 38. The drive shaft of the finger motor 39 is connected to the finger 37. Therefore, the finger 37 on the other side of the fork plate 36 is installed and connected with the same structure as above.

[0042] A drive plate 44 is provided at the upper part of the front side of the front frame plate 31. A first slide rail 40 is provided between the upper part of the front side of the front frame plate 31 and the rear side of the drive plate 44. A slidable first telescopic seat 41 is provided on the first slide rail 40. The first slide rail 40 is installed on the rear side of the drive plate 44, and the first telescopic seat 41 is installed at the upper part of the front side of the front frame plate 31. The drive plate 44 expands and contracts along the first slide rail 40.

[0043] The rear fork plate 36b is provided on the front side of the drive plate 44. A second slide rail 42 is provided between the front side of the drive plate 44 and the rear side of the rear fork plate 36b. A slidable second telescopic seat 43 is provided on the second slide rail 42. The second slide rail 42 is installed on the rear side of the rear fork plate 36b, and the second telescopic seat 43 is installed on the front side of the drive plate 44. The rear fork plate 36b expands and contracts along the second slide rail 42.

[0044] Upper slide grooves 44a and lower slide grooves 44b are provided on the left and right sides of the drive plate 44. Pulley seats 45 are respectively provided in the upper slide grooves 44a and the lower slide grooves 44b. A rotatable upper pulley 46 or a lower pulley is provided inside the pulley seat 45. The upper pulley 46 in the upper slide groove 44a is sleeved with an upper belt 47, and the lower pulley in the lower slide groove 44b is sleeved with a lower belt 48. A screw 49 is provided on the side of the pulley seat 45, and the screw 49 can tighten the upper belt 47 and the lower belt 48.

[0045] The upper belt 47 and the lower belt 48 are symmetrically arranged left and right. To avoid interference, the upper belt 47 and the lower belt 48 are staggered in the up and down directions. One end of the upper belt 47 is fixedly connected to the front frame plate 31, and one end is fixedly connected to the rear side of the rear fork plate 36b. One end of the lower belt 48 is fixedly connected to the front frame plate 31, and one end is fixedly connected to the rear side of the rear fork plate 36b.

[0046] The lower end of the transmission plate 44 is provided with an upper rack 50. The lower end of the upper rack 50 is provided with a fork rack 51 engaged therewith. The fork rack 51 is installed on the first synchronous belt 52. The first synchronous belt 52 is sleeved on the driving wheel 53 and the driven wheel 54. The driving wheel 53 and the driven wheel 54 are rotatably installed on the lower part of the front side of the vehicle frame front plate 31.

[0047] The transfer motor 55 is installed on the front side of the vehicle frame wide plate 26. The first sprocket 56 and the second sprocket 57 are provided on the rear side of the vehicle frame wide plate 26. The chain 58 is sleeved on the first sprocket 56 and the second sprocket 57. The drive shaft of the transfer motor 55 is connected to the first sprocket 56. A rotating shaft 59 is provided on the front side of the vehicle frame wide plate 26. The two ends of the rotating shaft 59 are connected to the driving wheels 53 in two groups of symmetrically arranged conveying and rotating mechanisms.

[0048] The transfer motor 55 drives the first synchronous belt 52 to rotate. The fork rack 51 on the first synchronous belt 52 rotates accordingly. The fork rack 51 meshes with the upper rack 50 installed on the transmission plate 44, driving the transmission plate 44 to move along the telescopic slide rail. The flat belt drives the fork rear plate 36b to expand and contract. The finger 37 is driven to rotate by the finger motor 39. When the conveying trolley 23 picks up the goods, the finger 37 rotates downward, pushing the material box 4 to the material placement position 5 or the pallet 27 of the conveying trolley 23.

[0049] The moving direction of the conveying and rotating mechanism is bidirectional. The direction of transferring the material box 4 is not limited to a single direction. The conveying trolley 23 can transfer the material box 4 from two directions, left or right, with a wider application range.

[0050] As Figure 8 shown, the conveying switch mechanism includes a down - probing motor 60, a lead screw 63, a moving block 65, and a down - probing plate 66. The down - probing motor 60 is installed on the outer side of the inner long plate 24 of the vehicle frame. The lower end of the down - probing motor 60 is provided with a down - probing motor mounting seat 61. The lower end of the down - probing motor mounting seat 61 is provided with a lead screw mounting frame 62. The lead screw mounting frame 62 is internally provided with a rotatable lead screw 63. The drive shaft of the down - probing motor 60 is connected to the lead screw 63. The lead screw mounting frame 62 is installed on the outer side of the inner long plate 24 of the vehicle frame through a fixing member 64. A moving block 65 is sleeved on the lead screw 63. The moving block 65 is fixedly connected to the down - probing plate 66.

[0051] The drive shaft of the down - probing motor 60 drives the lead screw 63 to rotate. The thread in the moving block 65 meshes with the lead screw. The lead screw 63 drives the moving block 65 to move up and down. The moving block 65 drives the down - probing plate 66 to move up and down. The down - probing plate 66 presses down on the pressing plate 19 at the material placement position 5, pulling the front baffle 9 downward. At this time, the material box 4 is sent into the material placement position 5 by the conveying and rotating mechanism of the conveying trolley 23. When the down - probing plate 66 moves upward, the pressing plate 19 at the material placement position 5 moves upward, and the front baffle 9 moves upward, fixing the material box 4 in the material placement position 5.

[0052] As shown Figure 9 in the figure, the traveling drive mechanism includes a traveling motor 67, a reducer 68, a first synchronous pulley 70, a second synchronous pulley 71, a second synchronous belt 72, a connecting shaft 73, and traveling wheels 74. A traveling motor fixing seat 69 is provided at the rear side of the front frame plate 31. A traveling motor 67, a reducer 68, and a connecting shaft 73 are provided on one side of the traveling motor fixing seat 69. A first synchronous pulley 70, a second synchronous pulley 71, and a second synchronous belt 72 are provided on the other side of the traveling motor fixing seat 69. The second synchronous belt 72 is sleeved on the first synchronous pulley 70 and the second synchronous pulley 71.

[0053] The drive shaft of the traveling motor 67 is connected to the output shaft of the reducer 68, and the reducer 68 functions to reduce speed and increase torque. The reducer 68 is installed on one side of the traveling motor fixing seat 69, and the output shaft of the reducer 68 passes through the traveling motor fixing seat 69 to connect to the first synchronous pulley 70.

[0054] Traveling wheels 74 and axle shafts 75 are provided on the outer sides of the left frame plate 33 and the right frame plate 34 of the vehicle frame. Axle sleeves 76 are provided on the inner sides of the left frame plate 33 and the right frame plate 34 of the vehicle frame. The traveling wheels 74 are installed on the axle shafts 75. The traveling wheels 74 are respectively installed on the outer sides of the left frame plate 33 and the right frame plate 34 of the vehicle frame, and the axle shafts 75 are inserted into the axle sleeves 76. Couplings 77 are provided at both ends of the connecting shaft 73. The coupling 77 at one end of the connecting shaft 73 passes through the traveling motor fixing seat 69 to connect to the second synchronous pulley 71, and the coupling 77 at the other end of the connecting shaft 73 connects to the axle shaft 75 on the inner side of the left frame plate 33 of the vehicle frame.

[0055] Traveling wheels 74 are respectively provided on the outer sides of the left frame plate 33 and the right frame plate 34 at the other front end of the conveying trolley 23. The traveling wheels 74 are installed on the outer sides of the left frame plate 33 and the right frame plate 34 through the axle shafts 75 and move along with the conveying trolley 23.

[0056] The traveling motor 67 and the reducer 68 cooperate to drive the first synchronous pulley 70 to rotate. The first synchronous pulley 70 drives the second synchronous belt 72 and the second synchronous pulley 71 to rotate. The rotating shaft 59 rotates along with the synchronous pulley, and the traveling wheels 74 on both sides rotate synchronously, and finally the whole vehicle moves forward and backward.

[0057] The best embodiments of the present invention have been illustrated, and various changes or modifications made by those of ordinary skill in the art will not depart from the scope of the present invention.

Claims

1. A conveying and circulation mechanism for a small packet flow intelligent production line, comprising a track (22), characterized in that: The track (22) is provided with a transport trolley (23) for moving between the various working units; the transport trolley (23) comprises a body base for supporting the material box (4), a head, a telescopic feeding mechanism for transporting the material box (4) to the working units on both sides, and a travel drive mechanism installed in the head for driving the transport trolley (23) to move to a specified position.

2. According to claim 1, a conveying and circulation mechanism for a small packet flow intelligent production line is characterized by: The vehicle body base comprises a frame inner long plate (24), a frame outer long plate (25), a frame wide plate (26) and a supporting plate (27); the vehicle head comprises a frame front plate (31), a frame rear plate (32), a frame left plate (33) and a frame right plate (34).

3. According to claim 2, a conveying and circulation mechanism for a small packet flow intelligent production line is characterized by: The telescopic feeding mechanism comprises two groups of transmission plates (44) slidably mounted on a vehicle body base, a fork plate (36) slidably mounted on the transmission plates (44), and a transfer motor (55) for driving the two groups of transmission plates (44) to slide synchronously; fingers (37) are provided on both sides of the fork plate (36), and a finger motor (39) for driving the fingers (37) to move is provided inside the fork plate (36).

4. According to claim 3, a conveying and circulation mechanism for a small packet flow intelligent production line is characterized in that: The transmission plate (44) is slidably mounted on the front plate (31) of the frame through the first slide rail (40), and the transmission plate (44) is slidably connected to the fork plate (36) through the second slide rail (42); the transmission plate (44) is provided with an upper belt (47) wound around the upper pulley (46), and a lower belt (48) wound around the lower pulley; the upper belt (47) and the lower belt (48) are symmetrically arranged left and right, one end of the upper belt (47) is fixedly connected to the front plate (31) of the frame, and the other end is fixedly connected to the rear side of the fork plate (36); one end of the lower belt (48) is fixedly connected to the front plate (31) of the frame, and the other end is fixedly connected to the rear side of the fork plate (36).

5. According to claim 4, a conveying and circulation mechanism for a small packet flow intelligent production line is characterized in that: The frame front plate (31) is provided with a first synchronous belt (52), a driving wheel (53), and a driven wheel (54); the first synchronous belt (52) is sleeved on the driving wheel (53) and the driven wheel (54); the first synchronous belt (52) is provided with a fork rack (51); the transmission plate (44) is provided with an upper rack (50) meshing with the fork rack (51); the frame wide plate (26) is provided with a rotating shaft (59), and the rotating shaft (59) is connected to the driving wheels (53) on the frame front plates (31) on both sides.

6. The conveying and circulation mechanism for a small packet flow intelligent production line according to claim 5 is characterized by: A first sprocket (56), a second sprocket (57) and a chain (58) are provided on the rear side of the frame wide plate (26); the driving shaft of the transfer motor (55) is connected to the first sprocket (56); and the rotating shaft (59) is connected to the second sprocket (57).

7. The conveying and circulation mechanism for a small packet flow intelligent production line according to claim 6 is characterized by: An upper slide groove (44a) and a lower slide groove (44b) for mounting a pulley seat (45) are provided on the left and right sides of the transmission plate (44), and the upper belt pulley (46) and the lower belt pulley are mounted in the corresponding pulley seat (45).

8. The conveying and circulation mechanism for the intelligent production line of small packet flow according to claim 7 is characterized by: The fork holding plate (36) comprises a fork holding front plate (36a), a fork holding rear plate (36b) and a fork holding top plate (36c); a finger shifting mounting seat (38) is arranged inside the fork holding plate (36); the finger shifting mounting seat (38) is mounted on the fork holding rear plate (36b); and a driving shaft of a finger shifting motor (39) passes through the finger shifting mounting seat (38) and is connected to the finger shifting (37).

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