Tobacco leaf weighing and pre-pressing device
By designing a tobacco leaf weighing pre-compression device, the pressure on the weighing sensor is shared by the rail system and the weighing lifting system, which solves the problems of easy sensor damage and low accuracy, and achieves high-precision and long-life weighing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-10
AI Technical Summary
The existing weighing equipment for leafy plants has easily damaged weighing sensors and low weighing accuracy, making it difficult to withstand both the weight of the equipment and the pressure of packaging.
Design a tobacco leaf weighing and pre-compression device, which adopts a rail system, a weighing system and a weighing lifting system. The weighing system is clamped between the rail system and the weighing lifting system. The weighing system lifts the rail system to perform weighing, thus avoiding the weighing sensor directly bearing the pressure of the equipment and packaging.
It improves the sensitivity and lifespan of the weighing sensor, maintains weighing accuracy, reduces the sensor failure rate, and improves equipment utilization efficiency.
Smart Images
Figure CN223985770U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metering and packaging technology for leafy plants, and in particular to a tobacco leaf weighing and pre-compression device. Background Technology
[0002] Leafy agricultural products, such as tobacco, are bulky and loose, so after being purchased from the production base, they usually need to be weighed, packaged, and then transported to the processing plant for storage.
[0003] In existing technologies, the weighing sensors used in equipment for weighing and packaging leafy plants are mostly installed at the bottom of the weighing container. The weight of the entire equipment is borne by the weighing sensors, causing them to be subjected to heavy pressure for a long time. At the same time, after the weighing is completed, the plant is directly compressed and packaged. Since the weighing sensor is a highly sensitive electronic component, it is difficult for it to withstand the pressure during the compression process. Therefore, the weighing sensor is easily damaged, resulting in low weighing accuracy.
[0004] The Chinese patent application (application number 201410376818.3) discloses a "weighing and baling machine", which consists of a frame, baling components, weighing barrel, weighing components, operating components, and a weighing lifting device. The weighing lifting device consists of a weighing lifting base frame 2, a weighing lifting push frame, a weighing lifting power source, and a weighing lifting frame 7. It features high weighing accuracy, long service life, and suitability for weighing and baling plant leaves. It can be used for weighing and baling plant leaves such as kelp and tobacco leaves, and plant stems such as rice straw and wheat straw.
[0005] Another Chinese patent application (application number 2015100809222) discloses an "Intelligent Tobacco Leaf Packing Equipment and Method." This equipment includes multiple conveyors connected sequentially in a closed frame shape via a lifting mechanism, wherein one of the conveyors passes through the loading area of a mobile tobacco cart; multiple mobile tobacco carts; a packing machine that spans over another of the conveyors, allowing the other conveyor to pass through its interior; a rotating packing mechanism connected to the packing machine; a power source mechanism connected to the multiple conveyors to provide driving force; and a control system connected to the multiple conveyors, the packing machine, the rotating packing mechanism, and the power source mechanism. By automating the loading, pressing, packing, and sewing processes of tobacco leaves, labor intensity is significantly reduced and labor efficiency is improved.
[0006] Another Chinese patent application (application number 202211100751.1) discloses an "automatic packaging device and method," which includes: a control device and, respectively connected to the control device, an inbound conveying mechanism, an inbound lifting mechanism, a storage silo, an outbound lifting mechanism, a first feeding conveying mechanism, a dropping mechanism, a second feeding conveying mechanism, a packaging mechanism, and a finished product conveying mechanism; the inbound lifting mechanism is located between the inbound conveying mechanism and the storage silo; the outbound lifting mechanism is located between the storage silo and the first feeding conveying mechanism; a section of the first feeding conveying mechanism and the second feeding conveying mechanism are stacked; the dropping mechanism is located on a section of the first feeding conveying mechanism and the second feeding conveying mechanism, and the first feeding conveying mechanism has a dropping port corresponding to the position of the dropping mechanism; the packaging mechanism is located on the second feeding conveying mechanism and is situated to one side of the dropping mechanism. The entire packaging process of the aforementioned automatic packaging device and method is automated, resulting in high packaging efficiency. Summary of the Invention
[0007] The technical problem to be solved by this utility model is to provide a weighing equipment with high accuracy, long service life and suitable for weighing and pre-compressing leafy plants.
[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is to design a tobacco leaf weighing and pre-compression device, which includes a frame, a hydraulic system, a hydraulic actuation system, and an electrical control system. The frame includes a top seat assembly 15, left front and rear columns 6, right front and rear columns 7, and a base assembly 1. The left front and rear columns 6 and the right front and rear columns 7 are arranged between the top seat assembly 15 and the base assembly 1. The hydraulic system is located on the upper part of the top seat assembly 15, and the hydraulic actuation system and the electrical control system are located on the upper and lower parts of the top seat assembly 15. It also includes a rail system, a weighing system, and a weighing lifting system.
[0009] The rail support system is placed on the upper part of the base assembly 1 in a left-right direction, and includes a rail support beam frame 2 and two or more support rollers 5. The rail support beam frame 2 includes a front rail support beam 63, a rear rail support beam 58, a left connecting beam 62, a right connecting beam 59, a middle front connecting beam 61, and a middle rear connecting beam 60. The front rail support beam 63 and the rear rail support beam 58 are arranged in a left-right direction, and the left connecting beam 62 and the right connecting beam 59 are respectively located in the middle left and middle right positions between the front rail support beam 63 and the rear rail support beam 58. The middle front connecting beam 61 and the middle rear connecting beam 60 are respectively located in the middle front and middle rear positions between the left connecting beam 62 and the right connecting beam 59. Slots for accommodating the support rollers 5 are symmetrically opened on the upper part of the front rail support beam 63 and the rear rail support beam 58.
[0010] A rail system cover plate 3 is also provided on the upper part between the front rail beam 63 and the rear rail beam 58, and rail system cover plate lugs 44 are respectively provided on the left and right rear sides of the front rail beam 63 and the left and right front sides of the rear rail beam 58.
[0011] On the base assembly 1 with recesses at both ends between the front support beam 63 and the rear support beam 58, recessed guard plates 45 are respectively provided.
[0012] The weighing system includes a weighing sensor 33, a weighing sensor mounting block 34, a weighing sensor lower top block 32, and a weighing display screen 8. The weighing sensor mounting block 34 is located at the lower part between the middle front connecting beam 61 and the middle rear connecting beam 60. The upper right end of the weighing sensor 33 is located below the weighing sensor mounting block 34. The weighing sensor lower top block 32 is located at the upper middle part of the weighing lifting system. The weighing display screen 8 is located on the inner side of the upper right front corner of the frame.
[0013] The weighing lifting system includes a weighing lifting frame assembly, a weighing lifting push mechanism, and a weighing lifting base assembly; the weighing lifting base assembly is located at the inner bottom of the base assembly, and the weighing lifting push mechanism and the weighing lifting frame assembly are arranged sequentially on it.
[0014] The weighing lifting frame assembly includes a weighing lifting frame body 40, a left guide cylinder 25, and a right guide cylinder 37. The weighing lifting frame body 40 includes a left vertical beam 64, a middle vertical beam 66, a right vertical beam 49, a front crossbeam 65, a middle front crossbeam 67, a middle rear crossbeam 68, a rear crossbeam 69, and a reinforcing beam 57. The left vertical beam 64, the middle vertical beam 66, and the right vertical beam 49 are arranged in a front-to-back direction, left-center-right. The crossbeam 65, the front crossbeam 67, the rear crossbeam 68, and the rear crossbeam 69 of the weighing lifting frame body are arranged in a left-right direction, front and back. The front and rear ends of the reinforcing beam 57 are respectively connected to the middle left parts of the front crossbeam 67 and the rear crossbeam 68 of the weighing lifting frame body. The left guide cylinder 25 of the weighing lifting frame body is respectively located at the front and rear ends of the left side of the left vertical beam 64 of the weighing lifting frame body, and the right guide cylinder 37 of the weighing lifting frame body is respectively located at the front and rear ends of the right side of the right vertical beam 49 of the weighing lifting frame body. The lower top block 32 of the weighing sensor is located on the top of the middle part of the reinforcing beam 57 and the middle vertical beam 66 of the weighing lifting frame body.
[0015] The weighing and lifting base assembly includes a weighing and lifting base plate 24, a left guiding column 26 of the weighing and lifting frame body, a bottom plate 27 of the left guiding column of the weighing and lifting frame body, a right guiding column 36 of the weighing and lifting frame body, and a bottom plate 35 of the right guiding column of the weighing and lifting frame body; the weighing and lifting base plate 24 is arranged at the inner bottom edge of the base assembly 1, and the bottom plate 27 of the left guiding column of the weighing and lifting frame body and the bottom plate 35 of the right guiding column of the weighing and lifting frame body are respectively arranged on the upper surfaces of the middle left and middle right positions on the front and rear sides of the weighing and lifting base plate 24; the left guiding column 26 of the weighing and lifting frame body and the right guiding column 36 of the weighing and lifting frame body are respectively arranged on the bottom plates 27 of the left guiding column of the weighing and lifting frame body and the bottom plate 35 of the right guiding column of the weighing and lifting frame body at the middle left and middle right positions on the front and rear sides of the weighing and lifting base plate 24, and they are respectively matched with the left guiding cylinder 25 of the weighing and lifting frame body and the right guiding cylinder 37 of the weighing and lifting frame body.
[0016] The weighing and lifting pushing mechanism includes a weighing and lifting pushing frame 31, front and rear left weighing and lifting pushing wheels 29, front and rear right weighing and lifting pushing wheels 39, front and rear left weighing and lifting pushing slope platforms 30, front and rear right weighing and lifting pushing slope platforms 38, a weighing and lifting pushing oil cylinder 23, a rear side return pulling spring 43 of the weighing and lifting pushing frame, and a front side return pulling spring 46 of the weighing and lifting pushing frame. The front and rear left weighing and lifting pushing slope platforms 30 and the front and rear right weighing and lifting pushing slope platforms 38 are respectively arranged on the upper surfaces of the middle left and right positions on the front and rear sides of the weighing and lifting base plate 24; the weighing and lifting pushing frame 31 is in the shape of a "day" character, and the front and rear ends of its left and right sides respectively extend and are respectively installed with the front and rear left weighing and lifting pushing wheels 29 and the front and rear right weighing and lifting pushing wheels 39; the left ends of the rear side return pulling spring 43 of the weighing and lifting pushing frame and the front side return pulling spring 46 of the weighing and lifting pushing frame are respectively arranged at the front middle and rear middle positions on the left inner side surface of the base assembly 1, and their right ends are respectively arranged at the front middle and rear middle positions on the left side of the weighing and lifting pushing frame 31; the left end of the weighing and lifting pushing oil cylinder 23 is hinged at the middle of the left inner side surface of the base assembly 1, and the right end of its extended weighing and lifting pushing oil cylinder shaft 28 is hinged at the middle of the left side of the weighing and lifting pushing frame 31; the front and rear left weighing and lifting pushing wheels 29 and the front and rear right weighing and lifting pushing wheels 39 are respectively placed at the left side parts of the front and rear left weighing and lifting pushing slope platforms 30 and the front and rear right weighing and lifting pushing slope platforms 38.
[0017] A left front and rear weighing and lifting pushing wheel bearing 47 is further arranged in the middle of the front and rear left weighing and lifting pushing wheels 29, and a right front and rear weighing and lifting pushing wheel bearing 48 is further arranged in the middle of the front and rear right weighing and lifting pushing wheels 39.
[0018] On the weighing and lifting frame body 40 on the front and rear sides of the track supporting beam frame 2, a front guard plate 42 of the weighing and lifting frame body and a rear guard plate 41 of the weighing and lifting frame body are respectively arranged.
[0019] On the left side of the front and rear sides of the base assembly 1, elastic positioning components 4 are symmetrically arranged. Each elastic positioning component 4 includes a bracket 50, an elastic telescopic tube 54, a telescopic spring 53, a telescopic positioning rod 52, and a sliding positioning rod 56. The bracket 50 is inverted "V" shape, and the elastic telescopic tube 54 is arranged in the front-rear direction at its upper end. The outer end of the elastic telescopic tube 54 has a bottom, and a sliding positioning groove 55 is opened on its right cylindrical surface. The inner end face 51 of the telescopic positioning rod 52 is inclined, and it is installed inside the elastic telescopic tube 54. The telescopic spring 53 is installed between the outer end of the telescopic positioning rod 52 and the bottom surface of the elastic telescopic tube 54. The left end of the sliding positioning rod 56, which is installed in the sliding positioning groove 55, is connected to the right cylindrical surface of the telescopic positioning rod 52.
[0020] This utility model discloses a tobacco leaf weighing and pre-compression device, which combines a rail system, a weighing system, and a weighing lifting system. The weighing system is sandwiched between the rail system and the weighing lifting system. When weighing is required, the weighing lifting system lifts the rail system through the weighing system, thereby lifting the tobacco cart supported on the rail system, which facilitates the weighing of the tobacco leaves in the cart. When pre-compression and packaging are required, the weighing lifting system lowers and returns to its original position. At this time, the rail system rests on the base assembly, and no pressure is generated on the weighing sensors in the weighing system. Therefore, during the pre-compression process, the pressure on the tobacco cart supported on the rail system is directly transmitted to the base assembly, thus preventing damage to the weighing sensors in the weighing system. Therefore, it avoids the weighing sensor from bearing the weight pressure of the equipment for a long time, and also avoids the weighing sensor from being repeatedly subjected to the pressure of packaging and compression. Thus, it can maintain high sensitivity for a long time, and also greatly reduce the damage rate of the weighing sensor. More importantly, it can maintain a relatively stable state during weighing. Therefore, it has high weighing accuracy, long service life, and greatly improves the efficiency of equipment use. Attached Figure Description
[0021] Figure 1 This is a front view schematic diagram of the present invention;
[0022] Figure 2 This is a schematic diagram of the main sectional view of this utility model;
[0023] Figure 3 This is a top sectional view of the present invention along the AA axis;
[0024] Figure 4 This is a top sectional view of the present invention along the AA axis, after the cover plate has been removed;
[0025] Figure 5 This is a top sectional view of the present invention along the BB axis;
[0026] Figure 6 This is a top sectional view of the present invention along the CC axis;
[0027] Figure 7 This is a partially enlarged schematic diagram of K in this utility model;
[0028] Figure 8 This is a top-view enlarged schematic diagram of the rail support beam frame of this utility model;
[0029] Figure 9 This is a top-view enlarged schematic diagram of the weighing lifting frame body of this utility model.
[0030] In the diagram: 1 is the base assembly, 2 is the rail support beam, 3 is the rail support system cover plate, 4 is the elastic positioning assembly, 5 is the support roller, 6 is the left front and rear columns, 7 is the right front and rear columns, 8 is the weighing display screen, 9 is the push-button switch, 10 is the smoke suppressor plate, 11 is the top plate of the compression cylinder, 12 is the right guide rod, 13 is the left guide rod, 14 is the compression cylinder mounting base, 15 is the top seat assembly, 16 is the oil tank, 17 is the left guide rod seat, 18 is the branch valve, 19 is the oil pump, 20 is the compression cylinder, 21 is the right guide rod seat, 22 is the electrical control box, and 23 is the weighing lifting push cylinder. 24 is the weighing lifting base plate; 25 is the left guide cylinder of the weighing lifting frame body; 26 is the left guide column of the weighing lifting frame body; 27 is the bottom of the left guide column of the weighing lifting frame body; 28 is the weighing lifting push cylinder shaft; 29 is the left front and rear weighing lifting push wheel; 30 is the left front and rear weighing lifting push ramp; 31 is the weighing lifting push frame; 32 is the lower top block of the weighing sensor; 33 is the weighing sensor; 34 is the upper mounting block of the weighing sensor; 35 is the bottom plate of the right guide column of the weighing lifting frame body; 36 is the right guide column of the weighing lifting frame body; 37 is the weighing lifting... The following are the structural components of the weighing frame: right-side guide cylinder, right-side front and rear weighing lifting push ramp, right-side front and rear weighing lifting push wheel, weighing lifting frame body, weighing lifting frame body rear guard plate, weighing lifting frame body front guard plate, weighing lifting push frame body rear tension spring, weighing lifting push frame return rear side tension spring, weighing rail system cover plate lug, notched guard plate, weighing lifting push frame return front side tension spring, left-side front and rear weighing lifting push wheel bearing, right-side front and rear weighing lifting push wheel bearing, right-side vertical beam of weighing lifting frame body, support bracket, and weighing lifting frame body right vertical beam. On the inner end face, 52 is the telescopic positioning rod, 53 is the telescopic spring, 54 is the elastic telescopic tube, 55 is the sliding positioning groove, 56 is the sliding positioning rod, 57 is the reinforcing beam, 58 is the rear support rail beam, 59 is the right connecting beam, 60 is the middle rear connecting beam, 61 is the middle front connecting beam, 62 is the left connecting beam, 63 is the front support rail beam, 64 is the left vertical beam of the weighing lifting frame body, 65 is the front crossbeam of the weighing lifting frame body, 66 is the middle vertical beam of the weighing lifting frame body, 67 is the middle front crossbeam of the weighing lifting frame body, 68 is the middle rear crossbeam of the weighing lifting frame body, and 69 is the rear crossbeam of the weighing lifting frame body. Detailed Implementation
[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. The following description is by way of example, but the scope of protection of the present invention should not be limited thereto.
[0032] The directions in this instruction manual and its accompanying drawings are explained as follows:
[0033] Figure 1-2 The front is the actual front, the inside is the actual back; the top is the actual top, the bottom is the actual bottom; the left and right are the actual left and right respectively.
[0034] Figure 3-9 The front is the actual top, the inside is the actual bottom; the right is the actual right side, the left is the actual left side; the top and bottom are the actual back and front, respectively.
[0035] Example:
[0036] The tobacco weighing and pre-compression device in this embodiment consists of a frame, a hydraulic system, a hydraulic actuation system, an electrical control system, a rail system, a weighing system, a weighing lifting system, and an elastic positioning component 4.
[0037] The frame consists of a top support assembly 15, two left front and rear uprights 6 (round or rectangular tubes), two right front and rear uprights 7 (round or rectangular tubes), and a base assembly 1. The left and right front and rear uprights 6 and 7 are vertically positioned at the four corners between the top support assembly 15 and the base assembly 1. The top support assembly 15 is a rectangular frame formed by four channel steels or angle steels, connected by several channel steels, angle steels, or rectangular tubes in the middle to form a frame. The base assembly 1 is a rectangular frame formed by four channel steels, with weighing and lifting base plates 24 extending from the front and rear sides of the bottom of the frame to support the weighing and lifting system.
[0038] The hydraulic system consists of an oil tank 16, an oil pump 19, and a branch valve 18. The oil tank 16 is located on the left side of the upper part of the top seat assembly 15. The oil pump 19 is located at the rear of the oil tank 16, with its pump body submerged in the oil inside the oil tank 16. The branch valve 18 is located at the front of the oil tank 16. The pressurized oil pumped out by the oil pump 19 is divided into two branches after passing through the branch valve 18: one branch goes to the hydraulic actuator system, and the other branch goes to the heavy lifting system.
[0039] The hydraulic actuation system consists of a compression cylinder 20, a smoke-pressing plate 10, a compression cylinder top plate 11, a left guide rod 13, and a right guide rod 12. The lower part of the compression cylinder 20 is fixed to the top of the top seat assembly 15 via a compression cylinder mounting base 14 installed in the middle of the bottom of the top seat assembly 15. The left guide rod 13 and the right guide rod 12 are respectively installed on the middle left and middle right parts (i.e., symmetrical) or the middle left front and middle right rear parts (i.e., obliquely symmetrical) of the top seat assembly 15 via left guide rod seat 17 and right guide rod seat 21. The downward-extending shaft end of the compression cylinder 20 is connected to the smoke-pressing plate 10 via the compression cylinder top plate 11, and the lower ends of the left guide rod 13 and the right guide rod 12 are also connected to the smoke-pressing plate 10.
[0040] The electrical control system consists of an electrical control box 22 and a push-button switch 9. The electrical control box 22 is located on the right rear part of the top mount assembly 15, and the push-button switch 9 is located on the upper middle part of the left front and rear columns 6 on the front side. After the mains power is introduced into the electrical control box 22, it is connected to the oil pump 19 and the weighing display screen 8 of the weighing system via the push-button switch 9.
[0041] The rail system is placed on the upper part of the base assembly 1 in a left-right direction. It consists of a rail beam frame 2, two or more rollers 5, and a rail system cover plate 3.
[0042] The rail support beam 2 is composed of a front rail support beam 63, a rear rail support beam 58, a left connecting beam 62, a right connecting beam 59, a middle front connecting beam 61, and a middle rear connecting beam 60 (all made of channel steel or rectangular tube). The front rail support beam 63 and the rear rail support beam 58 are arranged in a left-right direction, while the left connecting beam 62 and the right connecting beam 59 are respectively located in the middle left and middle right positions between the front rail support beam 63 and the rear rail support beam 58. The middle front connecting beam 61 and the middle rear connecting beam 60 are respectively located in the middle front and middle rear positions between the left connecting beam 62 and the right connecting beam 59, forming a whole. The front rail support beam 63 and the rear rail support beam 58 are symmetrically provided with slots for accommodating the rollers 5 (in this example, each beam accommodates 6 rollers 5).
[0043] The left and right rear sides of the front rail beam 63 and the left and right front sides of the rear rail beam 58 are respectively provided with rail system cover plate lugs 44 with screw holes. Screw holes are provided at the front and rear ends of the left connecting beam 62 and the right connecting beam 59, as well as at the middle part of the middle front connecting beam 61 and the middle rear connecting beam 60. The rail system cover plate 3 is set on the top between the front rail beam 63 and the rear rail beam 58 and is fixed with screws.
[0044] The base assembly 1 with recesses at both ends between the front support beam 63 and the rear support beam 58 is also provided with recessed protective plates 45 to prevent dust from entering the inner cavity of the base assembly 1.
[0045] The weighing system consists of a load cell 33, a load cell mounting block 34, a load cell lower top block 32, and a weighing display screen 8. The load cell mounting block 34 is located in the lower part between the middle front connecting beam 61 and the middle rear connecting beam 60. The upper right end of the load cell 33 is located below the load cell mounting block 34. The load cell lower top block 32 is located in the middle of the weighing lifting system, so that the lower right to left part of the load cell 33 is in a state of just contact or infinitely close to the upper part of the load cell lower top block 32. The weighing display screen 8 is located in the upper right corner of the upper right corner formed by the top seat assembly 15 and the front right front and rear columns 7. It is connected to the load cell 33 through a signal line.
[0046] The weighing lifting system consists of a weighing lifting frame assembly, a weighing lifting push mechanism, and a weighing lifting base assembly.
[0047] The weighing lifting frame assembly consists of the weighing lifting frame body 40, the left guide cylinder 25 of the weighing lifting frame body, and the right guide cylinder 37 of the weighing lifting frame body.
[0048] The weighing lifting frame body 40 is composed of a left vertical beam 64, a middle vertical beam 66, a right vertical beam 49, a front crossbeam 65, a middle front crossbeam 67, a middle rear crossbeam 68, a rear crossbeam 69, and reinforcing beams 57 (all made of channel steel). The left vertical beam 64, the middle vertical beam 66, and the right vertical beam 49 are arranged in a front-to-back direction, left-middle-right. The front crossbeam 65, the middle front crossbeam 67, and the reinforcing beam 57 are also constructed of channel steel. The rear crossbeam 68 and the rear crossbeam 69 of the weighing lifting frame body are arranged in a left-right direction and form a whole. The front and rear ends of the reinforcing beam 57 are respectively connected to the middle left part of the opposite side of the front crossbeam 67 and the rear crossbeam 68 of the weighing lifting frame body. The left guide cylinder 25 of the weighing lifting frame body is respectively set at the front and rear ends of the left side of the left vertical beam 64 of the weighing lifting frame body, and the right guide cylinder 37 of the weighing lifting frame body is respectively set at the front and rear ends of the right side of the right vertical beam 49 of the weighing lifting frame body. The lower top block 32 of the weighing sensor is set on the top of the middle part of the reinforcing beam 57 and the middle vertical beam 66 of the weighing lifting frame body.
[0049] The weighing and lifting base assembly consists of a weighing and lifting base plate 24, a left guiding column 26 of the weighing and lifting frame body, a left guiding column bottom plate 27 of the weighing and lifting frame body, a right guiding column 36 of the weighing and lifting frame body, and a right guiding column bottom plate 35 of the weighing and lifting frame body. The weighing and lifting base plate 24 is arranged at the inner bottom edge of the base assembly 1 (i.e., extending from the inner bottom edge towards the center). The left guiding column bottom plate 27 of the weighing and lifting frame body and the right guiding column bottom plate 35 of the weighing and lifting frame body are respectively arranged on the upper parts of the middle left and middle right of the front and back sides of the weighing and lifting base plate 24. The left guiding column 26 of the weighing and lifting frame body and the right guiding column 36 of the weighing and lifting frame body are respectively arranged on the left guiding column bottom plate 27 of the weighing and lifting frame body and the right guiding column bottom plate 35 of the weighing and lifting frame body at the middle left and middle right of the front and back sides of the weighing and lifting base plate 24, and they are respectively matched with the left guiding cylinder 25 of the weighing and lifting frame body and the right guiding cylinder 37 of the weighing and lifting frame body.
[0050] The weighing and lifting pushing mechanism consists of a weighing and lifting pushing frame 31, front and rear left weighing and lifting pushing wheels 29, front and rear right weighing and lifting pushing wheels 39, front and rear left weighing and lifting pushing slopes 30, front and rear right weighing and lifting pushing slopes 38, a weighing and lifting pushing oil cylinder 23, a rear side return tension spring 43 of the weighing and lifting pushing frame, and a front side return tension spring 46 of the weighing and lifting pushing frame. The front and rear left weighing and lifting pushing slopes 30 and the front and rear right weighing and lifting pushing slopes 38 (both are lower on the left and higher on the right) are respectively arranged on the upper parts of the middle left and right of the front and back sides of the weighing and lifting base plate 24. The weighing and lifting pushing frame 31 (made of round steel or round tube) is in the shape of a "day" character. The front and rear ends of its left and right sides respectively extend and are respectively installed with front and rear left weighing and lifting pushing wheels 29 (a front and rear left weighing and lifting pushing wheel bearing 47 is also arranged in the middle of the front and rear left weighing and lifting pushing wheels 29) and front and rear right weighing and lifting pushing wheels 39 (a front and rear right weighing and lifting pushing wheel bearing 48 is also arranged in the middle of the front and rear right weighing and lifting pushing wheels 39). The left ends of the rear side return tension spring 43 of the weighing and lifting pushing frame and the front side return tension spring 46 of the weighing and lifting pushing frame are respectively arranged at the front middle and rear middle positions of the left inner side surface of the base assembly 1, and their right ends are respectively arranged at the front middle and rear middle positions on the left side of the weighing and lifting pushing frame 31. The left end of the weighing and lifting pushing oil cylinder 23 is hinged at the middle of the left inner side surface of the base assembly 1, and the right end of its extended weighing and lifting pushing oil cylinder shaft 28 is hinged at the middle of the left side of the weighing and lifting pushing frame 31. The front and rear left weighing and lifting pushing wheels 29 and the front and rear right weighing and lifting pushing wheels 39 are respectively placed on the left side parts of the front and rear left weighing and lifting pushing slopes 30 and the front and rear right weighing and lifting pushing slopes 38.
[0051] The left front and rear weighing lifting push wheels 29 and the right front and rear weighing lifting push wheels 39 of the weighing lifting push mechanism are respectively set on the weighing lifting base plate 24. The left guide cylinder 25 and the right guide cylinder 37 of the weighing lifting frame body installed at the four corners are movably fitted onto the left guide column 26 and the right guide column 36 of the weighing lifting frame body. The lower part of the weighing lifting frame body 40 (i.e., the side with the slot faces down) is covered on the weighing lifting push frame 31 and supported by the upper part of the left front and rear weighing lifting push wheels 29 and the right front and rear weighing lifting push wheels 39.
[0052] On the weighing lifting frame body 40 on both the front and rear sides of the rail beam 2, a front guard plate 42 and a rear guard plate 41 of the weighing lifting frame body are respectively provided to prevent dust from entering the inner cavity of the base assembly 1.
[0053] Two sets of elastic positioning components 4 are symmetrically arranged on the left side of the front and rear sides of the base assembly 1. They are composed of a bracket 50, an elastic telescopic tube 54, a telescopic spring 53, a telescopic positioning rod 52, and a sliding positioning rod 56. The bracket 50 is inverted "V" shape (i.e., the tip is facing upwards), and an elastic telescopic tube 54 is arranged in the front-rear direction at its upper end. The outer side (i.e., the side facing outwards) of the elastic telescopic tube 54 has a bottom (i.e., forming an outer closed end), and a sliding positioning groove 55 is opened on its right cylindrical surface. The inner end face 51 of the telescopic positioning rod 52 is inclined, and it is installed in the elastic telescopic tube 54. A telescopic spring 53 is installed between the outer end of the telescopic positioning rod 52 and the bottom surface of the elastic telescopic tube 54. The left end of the sliding positioning rod 56, which is installed in the sliding positioning groove 55, is connected to the right cylindrical surface of the telescopic positioning rod 52.
[0054] The tobacco weighing and pre-compressing device in this embodiment is used in conjunction with a tobacco compression and transfer vehicle.
[0055] In use, first load the tobacco leaves to be weighed and packaged into the tobacco leaf compression and transfer cart. Then, push the tobacco leaf compression and transfer cart onto the top of the guide beam 2 via the left-hand inlet ramp, so that the guide strips on the bottom of the tobacco leaf compression and transfer cart are placed on the guide rollers 5 on the guide beam 2. Initially, the front and rear sides of the right side of the tobacco leaf compression and transfer cart push the inclined inner end face 51 of the telescopic positioning rod 52, causing the telescopic positioning rod 52 to compress the telescopic spring 53 and retract into the inner cavity of the elastic telescopic tube 54, thereby allowing the tobacco leaf compression and transfer cart to move to the right. After the left side of the tobacco leaf compression and transfer cart has passed, the telescopic positioning rod 52 pops out and returns to its original shape under the action of the telescopic spring 53, thus positioning the front and rear sides of the left side of the tobacco leaf compression and transfer cart (at this time, the tobacco leaf compression and transfer cart can be pulled back to the left slightly to achieve precise positioning).
[0056] Next, press button switch 9 to start oil pump 19, and the weighing display screen 8 lights up. Then, the pressurized oil output by oil pump 19 pushes the weighing lifting cylinder shaft 28 extending from weighing lifting cylinder 23, thereby pushing weighing lifting frame 31 to the right. During this process, the left front and rear weighing lifting wheels 29 and the right front and rear weighing lifting wheels 39 on the weighing lifting frame 31 climb along the left front and rear weighing lifting ramp 30 and the right front and rear weighing lifting ramp 38 respectively. When they reach the highest position, they temporarily stop. During the climbing process, the left front and rear weighing lifting wheel 39... The weighing lifting frame body 40 on the front and rear weighing lifting push wheels 29 and the right front and rear weighing lifting push wheels 39 is also lifted. During the lifting process, the weighing sensor under the weighing sensor 32 is also lifted. At the same time, the weighing sensor 33 and the weighing sensor mounting block 34 on the weighing sensor are lifted, and the rail beam 2 and the tobacco leaf compression and transfer car placed on it are lifted. At this time, the amount displayed on the weighing display screen 8 is the weight of the tobacco leaves in the tobacco leaf compression and transfer car (it can be zeroed out with an empty car first), and then the method of supplementing the less and refunding the more is adopted to ensure that there is enough weight of tobacco leaves in the car.
[0057] Next, the weighing lifting push cylinder 23 begins to retract, the weighing lifting push frame 31 moves to the left, and the left front and rear weighing lifting push wheels 29 and the right front and rear weighing lifting push wheels 39 retract the left front and rear weighing lifting push ramp 30 and the right front and rear weighing lifting push ramp 38; then, the compression cylinder 20 begins to work, and its downward-extending shaft end pushes the pressing plate 10 downward into the upper part of the inner cavity of the tobacco leaf compression and transfer vehicle after passing through the compression cylinder top plate 11, and performs preliminary compression (i.e., pre-compression) on the tobacco leaves in the vehicle; when the predetermined pressure is reached, the compression cylinder 20 begins to return, pushing the pressing plate 10 out of the inner cavity of the tobacco leaf compression and transfer vehicle and returning to its original position. Thus, one tobacco leaf weighing pre-compression action is completed.
[0058] The tobacco leaf weighing and pre-compression device of this invention can be used for weighing and pre-compressing plant leaves such as kelp and tobacco leaves, and plant stems such as rice straw and wheat straw.
Claims
1. A tobacco leaf weighing and pre-pressing device, comprising a frame, a hydraulic system, a hydraulic execution system and an electric control system, the frame comprising a top base assembly (15), left front and rear vertical columns (6), right front and rear vertical columns (7) and a bottom base assembly (1), the left front and rear vertical columns (6) and the right front and rear vertical columns (7) being arranged between the top base assembly (15) and the bottom base assembly (1), the hydraulic system being arranged at the upper part of the top base assembly (15), and the hydraulic execution system and the electric control system being arranged at the upper and lower parts of the top base assembly (15); characterized in that: Also include the rail system, weighing system and weighing lifting system; The rail system is horizontally placed on the upper part of the base assembly (1), which includes a rail beam frame (2) and two or more supporting rollers (5); the rail beam frame (2) includes a front rail beam (63), a rear rail beam (58), a left connecting beam (62), a right connecting beam (59), a middle front connecting beam (61) and a middle rear connecting beam (60), the front rail beam (63) and the rear rail beam (58) are arranged in front and back, the left connecting beam (62) and the right connecting beam (59) are arranged in the middle left and middle right between the front rail beam (63) and the rear rail beam (58), the middle front connecting beam (61) and the middle rear connecting beam (60) are arranged in the middle front and middle rear between the left connecting beam (62) and the right connecting beam (59); symmetrically provided with a groove hole containing the supporting roller (5) on the upper surface of the front rail beam (63) and the rear rail beam (58).
2. The tobacco leaf weighing and pre-pressing device according to claim 1, characterized in that: The rail system cover plate (3) is further arranged on the upper surface between the front rail beam (63) and the rear rail beam (58), and the rail system cover plate lug (44) is arranged on the left and right sides of the rear side of the front rail beam (63) and the front side of the left and right sides of the rear rail beam (58).
3. The tobacco leaf weighing and pre-pressing device according to claim 1, characterized in that: The notch guard plate (45) is further arranged on the upper surface of the base assembly (1) at the left and right ends of the notch between the front rail beam (63) and the rear rail beam (58).
4. The tobacco leaf weighing and pre-pressing device according to claim 1, characterized in that: The weighing system includes a weighing sensor (33), a weighing sensor upper mounting block (34), a weighing sensor lower top block (32) and a weighing display screen (8); the weighing sensor upper mounting block (34) is arranged on the lower part between the middle front connecting beam (61) and the middle rear connecting beam (60), the right end of the weighing sensor (33) is arranged on the lower surface of the weighing sensor upper mounting block (34), and the weighing sensor lower top block (32) is arranged on the upper surface of the middle part of the weighing lifting system; the weighing display screen (8) is arranged on the inner side of the front upper corner of the rack.
5. The tobacco leaf weighing and pre-pressing device according to claim 4, characterized in that: The weighing lifting system includes a weighing lifting frame assembly, a weighing lifting pushing mechanism and a weighing lifting base assembly; the weighing lifting base assembly is arranged on the inner bottom of the base assembly, and the weighing lifting pushing mechanism and the weighing lifting frame assembly are sequentially arranged on the weighing lifting base assembly; The weighing lifting frame assembly comprises a weighing lifting frame body (40) and a weighing lifting frame body left side guide cylinder (25) and a weighing lifting frame body right side guide cylinder (37), the weighing lifting frame body (40) comprises a weighing lifting frame body left vertical beam (64), a weighing lifting frame body middle vertical beam (66), a weighing lifting frame body right vertical beam (49), a weighing lifting frame body front cross beam (65), a weighing lifting frame body middle front cross beam (67), a weighing lifting frame body middle back cross beam (68), a weighing lifting frame body back cross beam (69) and a reinforcing beam (57); the weighing lifting frame body left vertical beam (64) and the weighing lifting frame body middle vertical beam (66) and the weighing lifting frame body right vertical beam (49) are arranged in a front-to-back direction from left to right, the weighing lifting frame body front cross beam (65), the weighing lifting frame body middle front cross beam (67), the weighing lifting frame body middle back cross beam (68) and the weighing lifting frame body back cross beam (69) are arranged in a left-to-right direction from front to back, and the front and back ends of the reinforcing beam (57) are connected to the middle left parts of the weighing lifting frame body middle front cross beam (67) and the weighing lifting frame body middle back cross beam (68) respectively; the weighing lifting frame body left side guide cylinder (25) is arranged at the front and back ends of the left side of the weighing lifting frame body left vertical beam (64) respectively, and the weighing lifting frame body right side guide cylinder (37) is arranged at the front and back ends of the right side of the weighing lifting frame body right vertical beam (49) respectively; and the weighing sensor lower top block (32) is arranged on the upper surface of the middle part of the reinforcing beam (57) and the weighing lifting frame body middle vertical beam (66).
6. The tobacco leaf weighing and pre-pressing device according to claim 5, characterized in that: The weighing lifting base assembly comprises a weighing lifting base plate (24), a weighing lifting frame body left side guide column (26), a weighing lifting frame body left side guide column bottom plate (27) and a weighing lifting frame body right side guide column (36) and a weighing lifting frame body right side guide column bottom plate (35); the weighing lifting base plate (24) is arranged on the inner bottom surface edge of the base assembly (1), the weighing lifting frame body left side guide column bottom plate (27) and the weighing lifting frame body right side guide column bottom plate (35) are arranged on the upper surfaces of the middle left and the middle right of the front and back sides of the weighing lifting base plate (24) respectively; the weighing lifting frame body left side guide column (26) and the weighing lifting frame body right side guide column (36) are arranged on the weighing lifting frame body left side guide column bottom plate (27) and the weighing lifting frame body right side guide column bottom plate (35) of the middle left and the middle right of the front and back sides of the weighing lifting base plate (24) respectively, and are matched with the weighing lifting frame body left side guide cylinder (25) and the weighing lifting frame body right side guide cylinder (37) respectively.
7. The tobacco leaf weighing and pre-pressing device according to claim 6, characterized in that: The weighing lifting pushing mechanism comprises a weighing lifting pushing frame (31), left front and back weighing lifting pushing wheels (29), right front and back weighing lifting pushing wheels (39), left front and back weighing lifting pushing slopes (30), right front and back weighing lifting pushing slopes (38), a weighing lifting pushing oil cylinder (23), a weighing lifting pushing frame recovery rear side tension spring (43) and a weighing lifting pushing frame recovery front side tension spring (46), the left front and back weighing lifting pushing slopes (30) and the right front and back weighing lifting pushing slopes (38) are arranged on the left and right sides of the front and back sides of the weighing lifting base plate (24), respectively, the weighing lifting pushing frame (31) is in the shape of "day", the front and back ends of the left and right sides of the weighing lifting pushing frame (31) are extended, respectively, and the left front and back weighing lifting pushing wheels (29) and the right front and back weighing lifting pushing wheels (39) are arranged on the left and right sides of the weighing lifting pushing frame (31), respectively, the left ends of the weighing lifting pushing frame recovery rear side tension spring (43) and the weighing lifting pushing frame recovery front side tension spring (46) are arranged on the front and back middle positions of the left side of the base assembly (1), respectively, the right ends of the weighing lifting pushing frame recovery rear side tension spring (43) and the weighing lifting pushing frame recovery front side tension spring (46) are arranged on the front and back middle positions of the left side of the weighing lifting pushing frame (31), respectively, the left end of the weighing lifting pushing oil cylinder (23) is hinged to the middle position of the left side of the base assembly (1), the right end of the weighing lifting pushing oil cylinder shaft (28) extending from the left end of the weighing lifting pushing oil cylinder (23) is hinged to the middle position of the left side of the weighing lifting pushing frame (31), the left front and back weighing lifting pushing wheels (29) and the right front and back weighing lifting pushing wheels (39) are arranged on the left positions of the left front and back weighing lifting pushing slopes (30) and the right front and back weighing lifting pushing slopes (38), respectively.
8. The tobacco leaf weighing and pre-pressing device according to claim 7, characterized in that: The left front and back weighing lifting pushing wheels (29) and the right front and back weighing lifting pushing wheels (39) are arranged on the left positions of the left front and back weighing lifting pushing slopes (30) and the right front and back weighing lifting pushing slopes (38), respectively.
9. The tobacco leaf weighing and pre-pressing device according to claim 8, characterized in that: The left front and back weighing lifting pushing wheels (29) and the right front and back weighing lifting pushing wheels (39) are arranged on the left positions of the left front and back weighing lifting pushing slopes (30) and the right front and back weighing lifting pushing slopes (38), respectively.
10. The tobacco leaf weighing and pre-pressing device according to claim 9, characterized in that: The left front and back weighing lifting pushing wheels (29) and the right front and back weighing lifting pushing wheels (39) are arranged on the left positions of the left front and back weighing lifting pushing slopes (30) and the right front and back weighing lifting pushing slopes (38), respectively. The left front and back weighing lifting pushing wheels (29) and the right front and back weighing lifting pushing wheels (39) are arranged on the left positions of the left front and back weighing lifting pushing slopes (30) and the right front and back weighing lifting pushing slopes (38), respectively.
Citation Information
Patent Citations
Weighing and packaging machine
CN104256879A
Automatic packaging device and method
CN116002163B