Spiral conveying method and system

Abstract

The invention relates to the technical field of automation equipment, in particular to a spiral conveying method and system. A transferring structure used for bearing materials is arranged on a spiral track in a sliding mode; a central rotating shaft is arranged at a central shaft of the spiral track, the central shaft is in driving connection with a rotating driving mechanism, and the central rotating shaft is in driving connection with a rotating frame; a lifting mechanism is arranged on the rotating frame, and a shifting arm is mounted on the lifting mechanism; the rotary driving mechanism drives the lifting mechanism and the material shifting arm to rotate when driving the central rotating shaft to rotate, and the lifting mechanism drives the material shifting arm to do lifting motion in the rotating process, so that the material shifting arm pushes or pulls the transferring structure to spirally move along the spiral track, and the transferring structure carries materials and spirally conveys the materials along the spiral track; according to the invention, the structure is relatively simple and compact, the occupied space is small, the cross-floor automatic transportation can be realized, the control is easier, the manufacturing, use and maintenance costs can be reduced, and the realization of automatic and assembly line batch processing is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of automation equipment, and particularly to a screw conveying method and system. Background Art

[0002] Chinese Utility Model Patent Publication No. CN216135106U discloses an automatic pig carcass pushing device for slaughtering equipment; it includes a hook track and a hook assembly. An connecting rod is arranged above the hook track, a pushing head assembly is arranged at the lower end of the connecting rod, the lower end of the pushing head assembly abuts against the hook assembly located on the hook track, a driving assembly for driving the pushing head assembly to slide left and right is arranged on the connecting rod, and a limiting assembly for restricting the pushing head assembly from sliding right is arranged at the side end of the hook track. The limiting assembly corresponds to the cutting station of the splitting machine.

[0003] This slaughtering equipment uses an automatic pushing device to realize the movement and switching operation of the pig carcass along the hook track between horizontal workstations, which improves the production efficiency to a certain extent. However, in actual application, due to the many processes in the decomposition process of the pig carcass, a very long hook track needs to be arranged to form a pipeline automated operation. Using the above automatic pushing device to form a horizontal transportation line will occupy a very large site space, and it cannot perform cross-floor vertical transportation in a small space, and cannot meet the layout requirements of most factory buildings, with poor adaptability.

[0004] Chinese Utility Model Patent Publication No. CN212952671U discloses a driving device applied to a screw conveyor, including a driving mechanism and a chain conveying mechanism arranged on the screw machine; the driving mechanism includes a driving source and a driving disk driven to rotate by the driving source. The driving disk is provided with not less than 1 universal coupling for adjusting the torque of the screw machine, a toothed groove is arranged around the driving disk, and the driving disk drives the chain conveying mechanism to transmit along the spiral track on the screw machine.

[0005] The driving device of this screw conveyor uses a chain conveying mechanism arranged along the track in the spiral track, and the material is conveyed through the load-carrying part of the chain conveying mechanism to realize screw conveying, so as to reduce the occupation of factory building space. However, the driving device of the above screw conveyor relies on the chain to be arranged along the spiral track. In actual application, the spiral bent track is very likely to cause chain jamming. When the number of track layers is large, using a spliced chain conveying mechanism results in a complex structure, and the manufacturing, use and maintenance costs are all very high. In addition, other existing screw conveyors also use a segmented synchronous belt mechanism, a blade type transmission mechanism, etc. arranged spirally along the track, and there are also problems of complex structure, high manufacturing, use and maintenance costs. At the same time, the structure of this type of machine is generally suitable for placing materials on the transfer table for contact conveying, and cannot meet the usage requirements.

[0006] Therefore, there is an urgent need to develop a technical solution to solve the above technical problems. Summary of the Invention

[0007] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a screw conveying method and system, which are relatively simple and compact in structure, occupy a small site space, can realize cross-floor automatic transportation, are easier to control, are beneficial to reducing the costs of manufacturing, use and maintenance, and are beneficial to realizing automatic and pipeline batch processing.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The present invention provides a screw conveying method, in which a transfer structure for carrying materials is slidably arranged on a screw track;

[0010] A central rotating shaft is arranged at the central axis of the screw track, the central shaft is drivingly connected with a rotation driving mechanism, and the central rotating shaft is drivingly connected with a rotating frame;

[0011] A lifting mechanism is arranged on the rotating frame, and a material pushing arm is installed on the lifting mechanism;

[0012] When the rotation driving mechanism drives the central rotating shaft to rotate, it drives the lifting mechanism and the material pushing arm to rotate. During the rotation of the lifting mechanism, it drives the material pushing arm to move up and down, so that the material pushing arm pushes or pulls the transfer structure to move spirally along the screw track, realizing the spiral conveying of the transfer structure carrying materials along the screw track.

[0013] Wherein, the material pushing arm rotates along the reference circle of the screw track. When the material pushing arm runs uniformly along the reference circle for one cycle, the material pushing arm moves up or down uniformly by one pitch.

[0014] Wherein, when the material pushing arm pushes or pulls the transfer structure to move spirally along the screw track, it satisfies:

[0015]

[0016] Wherein:

[0017] v 旋转 is the linear velocity of the material pushing arm rotating along the reference circle of the screw track;

[0018] v 上升 is the vertical rising or falling speed of the material pushing arm;

[0019] R is the radius of the screw track;

[0020] P is the pitch of the screw track.

[0021] Preferably, a plurality of material pushing arms are arranged at intervals along the axial direction of the central rotating shaft of the lifting mechanism; the distance between two material pushing arms located on adjacent layers of the spiral track is equal to the pitch of the spiral track.

[0022] Preferably, a plurality of lifting mechanisms are arranged in the circumferential direction of the reference circle of the spiral track around the rotating frame.

[0023] Preferably, the lifting mechanism includes a transmission belt or a transmission chain installed on the rotating frame and a lifting drive mechanism for driving the movement of the transmission belt or the transmission chain, and the material pushing arm is drivingly connected to the transmission belt or the transmission chain.

[0024] Preferably, the spiral track includes a track connecting frame and a track body; the track body is connected to the machine frame by the track connecting frame, the track body is provided with a chute, and the transfer structure is slidably assembled in the chute.

[0025] Preferably, the track body includes a first track body and a second track body, and the first track body and the second track body enclose the chute.

[0026] Preferably, the transfer structure includes a transfer frame, both sides of the upper end of the transfer frame are provided with rolling wheels, guide rollers are arranged on the front and back sides of the transfer frame, and a transfer position is arranged at the lower end of the transfer frame;

[0027] When the transfer structure is assembled with the track body, the rolling wheels on both sides of the transfer frame are respectively slidably mounted on the first track body and the second track body; the transfer frame passes through the chute, the guide rollers on both sides of the transfer frame are located in the chute, and the transfer position is located below the track body.

[0028] Preferably, a discharging station is arranged at any required position of the spiral track; the spiral track further includes a discharging section arranged at the discharging station, a discharging track and a discharging device are arranged at the discharging station;

[0029] During discharging, the transfer structure carries the material and moves into the discharging section. The discharging device drives the discharging section to separate from the spiral track and then docks with the discharging track, and the discharging device conveys the transfer structure and the material to the discharging track for discharging;

[0030] After discharging, the discharging device drives the discharging section to reset so that the discharging section is docked with the spiral track.

[0031] Wherein, the discharging device includes a material blocking mechanism for blocking the sliding of the transfer structure, a discharging drive mechanism for driving the movement of the discharging section, and a material pushing drive mechanism for pushing the transfer structure into the discharging track;

[0032] When the transfer structure moves the material into the discharging section, the material blocking mechanism blocks the transfer structure to prevent the transfer structure from sliding out of the discharging section; the discharging driving mechanism drives the discharging section equipped with the transfer structure to move, so that the discharging section is docked with the discharging track, and the pusher driving mechanism pushes the transfer structure in the discharging section into the discharging track to complete discharging.

[0033] After discharging, the discharging driving mechanism drives the discharging section to move back to its original position, so that the discharging section is docked with the spiral track.

[0034] Preferably, a material blocking cover for covering the discharging section is provided at the discharging section; the material blocking mechanism includes a material blocking driving mechanism and a material blocking rack drivingly connected to the material blocking driving mechanism, and the material blocking rack is provided with a first material blocking portion and a second material blocking portion.

[0035] During discharging, the transfer structure moves the material into the material blocking cover of the discharging section, and the material blocking driving mechanism drives the material blocking rack to move, so that the first material blocking portion and the second material blocking portion respectively block both ends of the material blocking cover.

[0036] Preferably, a sliding table is provided on the discharging device, the discharging section is slidably arranged on the sliding table, and the discharging track is located on one side of the sliding table.

[0037] During discharging, the discharging driving mechanism drives the discharging section equipped with the transfer structure to move on the sliding table, so that the discharging section is docked with the discharging track on one side.

[0038] The present invention also provides a spiral conveying system, including the above-mentioned spiral conveying method.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] This spiral conveying method decomposes the spiral motion into independent drives of rotation and lifting. By coupling the independently driven horizontal rotation motion with the lifting motion of the independently driven lifting mechanism through electromechanical coupling, it replaces the complex mechanical linkage conveyors and mechanical structures such as chain conveying mechanisms, synchronous belt mechanisms, and vane-type transmission mechanisms arranged in sections along the spiral track in the existing spiral conveyors. As a result, the structure of the present invention is relatively simple, the control is easier, and the spatial phase of the material pushing arm and the spiral track is precisely matched, with a low failure rate during use, which is beneficial to reducing the manufacturing, use, and maintenance costs.

[0041] The present invention can be used for spiral conveying of various materials, and can realize classification and sorting of materials to accurately sort and convey products to different floors, achieving cross-floor automated transportation.

[0042] When the present invention is applied to the operation and transportation of meat products such as pig carcasses, etc., the meat products can be hung by using a transfer structure and then transported along a spiral track. Compared with the existing slaughtering equipment that adopts a horizontal transportation line method, it not only has a compact structure and occupies a small site space, but also is conducive to setting up several required working stations for sub-slaughtering, classification, sorting, etc. at different height positions of the spiral track, thereby facilitating the realization of automated and assembly-line batch processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0044] Figure 2 is a three-dimensional structure schematic diagram of the present invention after hiding the frame;

[0045] Figure 3 is a three-dimensional structure schematic diagram of another perspective of the present invention after hiding the frame;

[0046] Figure 4 is a three-dimensional structure schematic diagram of the spiral track in the embodiment of the present invention;

[0047] Figure 5 is Figure 4 the enlarged schematic diagram at B in

[0048] Figure 6 is a three-dimensional schematic diagram of the transfer structure in the present invention;

[0049] Figure 7 is Figure 2 the enlarged schematic diagram at A in

[0050] Figure 8 is a three-dimensional structure schematic diagram of the spiral track and the discharging device described in the present invention;

[0051] Figure 9 is Figure 8 the structural schematic diagram at C in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The content mentioned in the embodiments does not limit the present invention.

[0053] Refer to Figures 1 to 9, A screw conveyor method, in which a transfer structure 3 for carrying materials is slidably arranged on a screw track 2; a central rotating shaft 412 is arranged at the central axis of the screw track 2, the central shaft 412 is drivingly connected with a rotation driving mechanism 411, and the central rotating shaft 412 is drivingly connected with a rotating frame 413; a lifting mechanism 42 is arranged on the rotating frame 413, and a material pushing arm 43 is installed on the lifting mechanism 42; when the rotation driving mechanism 411 drives the central rotating shaft 412 to rotate, it drives the lifting mechanism 42 and the material pushing arm 43 to rotate, and during the rotation of the lifting mechanism 42, it drives the material pushing arm 43 to move up and down, so that the material pushing arm 43 pushes or pulls the transfer structure 3 to move spirally along the screw track 2, realizing the spiral conveying of the transfer structure 3 carrying materials along the screw track 2.

[0054] In actual application, while the material pushing arm 43 horizontally rotates to push or pull the transfer structure 3 to unfold horizontally along the screw track 2, the material pushing arm 43 itself continuously moves up or down through the lifting mechanism 42, continuously pushing or pulling the transfer structure 3 to move forward along the screw track 2. This screw conveyor method decomposes the spiral motion into independent driving of rotation and lifting. By coupling the independently driven horizontal rotation motion with the lifting motion of the independently driven lifting mechanism 42 through electromechanical cooperation, it replaces the complex mechanical linkage conveyors and mechanical structures such as chain conveyor mechanisms, synchronous belt mechanisms, and vane-type transmission mechanisms arranged in sections along the screw track in the existing screw conveyors. Thus, the structure of the present invention is relatively simple, the control is easier, and the spatial phase of the material pushing arm 43 and the screw track 2 is accurately matched, with a low failure rate during use, which is beneficial to reducing the manufacturing, use, and maintenance costs.

[0055] The present invention can be used for the spiral conveying of various materials, and can realize the classification and sorting of materials to accurately sort and convey products to different floors, achieving cross-floor automated transportation.

[0056] When the present invention is applied to the operation and conveying of meat products such as pig carcasses, the meat products can be hung by the transfer structure 3 and conveyed along the screw track 2. Compared with the existing slaughter equipment using a horizontal transportation line method, it is not only compact in structure and occupies less site space, but also conducive to setting several required working stations for sub-slaughtering, classification, sorting, etc. at different height positions of the screw track 2, thus facilitating automated and assembly-line batch processing.

[0057] In this embodiment, the material pushing arm 43 rotates along the reference circle of the screw track 2. When the material pushing arm 43 runs uniformly along the reference circle for one cycle, the material pushing arm 43 moves up or down uniformly by one pitch to further ensure the accurate matching of the moving stroke of each material pushing arm 43 with the spatial phase of the screw track 2.

[0058] In this embodiment, when the material pushing arm 43 pushes or pulls the transfer structure 3 to move spirally along the screw track 2, it satisfies:

[0059]

[0060] Wherein:

[0061] v 旋转 is the linear velocity of the material feeding arm 43 rotating along the reference circle of the spiral track 2;

[0062] v 上升 is the vertical rising or falling movement speed of the material feeding arm 43;

[0063] R is the radius of the spiral track 2;

[0064] P is the pitch of the spiral track 2.

[0065] This spiral conveying method realizes speed coupling by controlling the algorithmic relationship between the above-mentioned v 上升 and v 旋转 , ensures the spatio-temporal consistency of power transmission, and thus realizes the precise matching of the moving stroke of each material feeding arm 43 with the spatial phase of the spiral track 2; the speed coupling relationship algorithm of the v 上升 and v 旋转 is simple, it is easy to realize speed coupling, and has high control precision, small error and few faults. It can be realized by controlling the speeds of the rotation and lifting double drives, so as to realize precise conveying.

[0066] In this embodiment, a plurality of material feeding arms 43 are axially spaced along the central rotating shaft 412 of the lifting mechanism 42; the distance between two material feeding arms 43 located in adjacent layers of the spiral track 2 is equal to the pitch of the spiral track 2, ensuring the precise matching of the displacement stroke of each material feeding arm 43 with the spatial phase of the spiral track 2;

[0067] By arranging a plurality of material feeding arms 43 on the same lifting mechanism 42, a material feeding arm 43 can be arranged on different spiral layers of the spiral track 2, so as to realize synchronous batch material conveying in each spiral layer of the spiral track 2.

[0068] In this embodiment, a plurality of lifting mechanisms 42 are arranged in the circumferential direction of the rotating frame 413 around the reference circle of the spiral track 2. The number of the lifting mechanisms 42 can be set as required. Arranging a plurality of lifting mechanisms 42 realizes batch material conveying at multiple positions in each spiral layer of the spiral track 2.

[0069] In this embodiment, preferably, the lifting mechanism 42 includes a transmission belt or chain 422 mounted on the rotating frame 413 and a lifting drive mechanism 421 for driving the movement of the transmission belt or chain 422, and the material pushing arm 43 is drivingly connected to the transmission belt or chain 422. Connecting the material pushing arm 43 to one side of the transmission belt or chain 422, the transmission belt or chain 422 can achieve closed-loop vertical long-distance driving of the material pushing arm 43 for lifting and lowering.

[0070] In this embodiment, preferably, the rotation drive mechanism 411 and the lifting drive mechanism 421 include, but are not limited to, frequency conversion motors, servo motors, hydraulic motors, stepping motors, etc. The speed can be controlled by giving frequency, pulses or hydraulic flow through a frequency converter. At the same time, negative feedback is introduced through an encoder to perform PID speed regulation on the dual-drive speeds of the rotation drive mechanism 411 and the lifting drive mechanism 421, ensuring the spatio-temporal consistency of power transmission again; the torque of the drive motor can also be used to monitor jamming abnormalities during operation, and the electromechanical coupling of the rotation drive mechanism 411 and the lifting drive mechanism 421 replaces the complex machinery of the existing screw conveyor.

[0071] In this embodiment, the spiral track 2 includes a track connection frame 21 and a track body 22; the track body 22 is connected to the frame 1 by the track connection frame 21, and the track body 22 is provided with a chute 223, and the transfer structure 3 is slidably assembled in the chute 223. Specifically, the track body 22 is installed in a spiral ascending manner by a plurality of track connection frames 21, which can reduce the installation difficulty of the track body 22 and improve the stability of the track body 22; sliding the transfer structure 3 in the chute 223 enables the transfer structure 3 to slide smoothly and stably along the chute 223.

[0072] In this embodiment, the track body 22 includes a first track body 221 and a second track body 222, and the first track body 221 and the second track body 222 enclose the chute 223. The track body 22 adopts a split combination design of the first track body 221 and the second track body 222, which is convenient for installation and maintenance; during installation, the width of the chute 223 can be adjusted as needed to increase the adaptation range between the track body 22 and the transfer structure 3.

[0073] In this embodiment, the transfer structure 3 includes a transfer frame 31. Both sides of the upper end of the transfer frame 31 are provided with rolling wheels 32, both the front and rear sides of the transfer frame 31 are provided with guide rollers 33, and a transfer position 34 is provided at the lower end of the transfer frame 31; when the transfer structure 3 is assembled with the track body 22, the rolling wheels 32 on both sides of the transfer frame 31 are respectively slidably mounted on the first track body 221 and the second track body 222; the transfer frame 31 passes through the chute 223, the guide rollers 33 on both sides of the transfer frame 31 are located in the chute 223, and the transfer position 34 is located below the track body 22.

[0074] Specifically, the transfer position 34 can be set into a hook structure, a hanging hole structure or other transfer structures as required. When the rolling wheel 32 slides on the rail body 22, the front and rear guide rollers 33 in the chute 223 conduct guiding and positioning, so that the transfer structure 3 slides smoothly on the rail body 22, and the shaking of the transfer structure 3 can be avoided at the same time.

[0075] In this embodiment, a discharging station is arranged at any required position of the spiral track 2; the spiral track 2 further includes a discharging section 24 arranged at the discharging station, and a discharging track 54 and a discharging device 5 are arranged at the discharging station; during discharging, the transfer structure 3 carries the material and moves into the discharging section 24, and the discharging device 5 drives the discharging section 24 to separate from the spiral track 2 and then dock with the discharging track 54, and the discharging device 5 conveys the transfer structure 3 and the material to the discharging track 54 for discharging; after discharging, the discharging device 5 drives the discharging section 24 to reset, so that the discharging section 24 docks with the spiral track 2.

[0076] Arranging a discharging station at any required position of the spiral track 2 is convenient for classifying and sorting the materials for conveying operations; when discharging is not required, the transfer structure 3 can normally pass through the discharging section 24; during discharging, the discharging device 5 is used to separate and dock the discharging section 24 between the spiral track 2 and the discharging track 54, so as to realize the rapid discharging of the materials. The discharging device 5 can cooperate with the spiral track 2 to arrange the discharging section 24 and the discharging device 5 in any direction within the range of 360 degrees in the circumferential direction, so as to realize flexible and rapid discharging, and enable it to be arranged according to the site and requirements, with a wide application range and strong adaptability.

[0077] In this embodiment, the discharging device 5 includes a material blocking mechanism 51 for blocking the sliding of the transfer structure 3, a discharging driving mechanism 52 for driving the movement of the discharging section 24, and a pushing driving mechanism 53 for pushing the transfer structure 3 into the discharging track 54; when the transfer structure 3 carries the material and moves into the discharging section 24, the material blocking mechanism 51 blocks the transfer structure 3 to prevent the transfer structure 3 from sliding out of the discharging section 24; the discharging driving mechanism 52 drives the discharging section 24 equipped with the transfer structure 3 to move, so that the discharging section 24 docks with the discharging track 54, and the pushing driving mechanism 53 pushes the transfer structure 3 in the discharging section 24 into the discharging track 54 to realize discharging; after discharging, the discharging driving mechanism 52 drives the discharging section 24 to move and reset, so that the discharging section 24 docks with the spiral track 2.

[0078] The discharging device 5 adopts an organic linkage operation of a material blocking mechanism 51, a discharging driving mechanism 52 and a material pushing driving mechanism 53, so that the transfer structure 3 carries the material and quickly slides from the discharging section 24 to the discharging track 54. During the discharging process, the sliding of the transfer structure 3 and the material is avoided; at the same time, the risks of large operation space, damage or soiling of meat and meat products caused by directly transporting the transfer structure 3 and / or the material for discharging by a manipulator are avoided. It has a simple structure, small occupied space and fast and reliable discharging, which is beneficial to multi-point arrangement on the spiral track 2 and is beneficial to realizing automated operation.

[0079] In this embodiment, a material blocking cover 25 for covering the discharging section 24 is arranged at the discharging section 24; the material blocking mechanism 51 includes a material blocking driving mechanism 511 and a material blocking frame 512 drivingly connected to the material blocking driving mechanism 511. The material blocking frame 512 is provided with a first material blocking part 513 and a second material blocking part 514; during discharging, the transfer structure 3 carries the material and moves into the material blocking cover 25 of the discharging section 24, and the material blocking driving mechanism 511 drives the material blocking frame 512 to move, so that the first material blocking part 513 and the second material blocking part 514 respectively block at both ends of the material blocking cover 25.

[0080] Specifically, the material blocking cover 25 has an open structure at the front and back, which is convenient for the transfer structure 3 to pass when discharging is not required. During discharging, the material blocking cover 25, the first material blocking part 513 and the second material blocking part 514 block the transfer structure 3 on the discharging section 24 from four directions, further effectively avoiding the sliding and large-amplitude shaking of the transfer structure 3 and facilitating fast and stable discharging operation.

[0081] In this embodiment, the discharging device 5 is provided with a sliding table 55, the discharging section 24 is slidably arranged on the sliding table 55, and the discharging track 54 is located on one side of the sliding table 55; during discharging, the discharging driving mechanism 52 drives the discharging section 24 equipped with the transfer structure 3 to move on the sliding table 55, so that the discharging section 24 is butted with the discharging track 54 on one side, realizing fast and stable discharging operation.

[0082] In this embodiment, the material blocking driving mechanism 511, the discharging driving mechanism 52 and the material pushing driving mechanism 53 can all be realized by using existing linear driving modules such as cylinders, oil cylinders and electric cylinders, so details are not described herein.

[0083] The present invention also provides a screw conveyor system, including the above-mentioned screw conveying method, which decomposes the screw motion into independent drives of rotation and lifting. By means of the electromechanical coupling and coordinated action of the independently driven horizontal rotational motion and the lifting motion of the independently driven lifting mechanism 42, it replaces the complex mechanical linkage conveyors and mechanical structures such as chain conveyor mechanisms, synchronous belt mechanisms, and vane-type transmission mechanisms arranged in sections along the screw track in the existing screw conveyors. As a result, the structure of this screw conveyor system is relatively simple, the control is easier, and the space phase of the material pushing arm 43 and the screw track 2 is accurately matched, with a low failure rate during use, which is beneficial to reducing the manufacturing, use, and maintenance costs.

[0084] This screw conveyor system can be used for the screw conveyance of various materials, and can realize the classification and sorting conveyance of materials to accurately sort and convey products to different floors.

[0085] When this screw conveyor system is applied to the operation conveyance of meat products such as pig carcasses, the meat products can be hung by using the transfer structure 3 and conveyed along the screw track 2. Compared with the existing slaughter equipment using a horizontal transportation line method, it is not only compact in structure and small in occupied site space, but also conducive to setting several required workstations for sub-slaughtering, classification, sorting, etc. at different height positions of the screw track 2, thus facilitating the realization of automated and mass production on an assembly line.

[0086] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A screw conveying method, characterized in that, A transfer structure (3) for carrying materials is slidably arranged on a spiral track (2); A central rotating shaft (412) is arranged at the central axis of the spiral track (2), the central shaft (412) is drivingly connected with a rotation driving mechanism (411), and the central rotating shaft (412) is drivingly connected with a rotating frame (413); A lifting mechanism (42) is arranged on the rotating frame (413), and a material pushing arm (43) is installed on the lifting mechanism (42); When the rotation driving mechanism (411) drives the central rotating shaft (412) to rotate, it drives the lifting mechanism (42) and the material pushing arm (43) to rotate. During the rotation of the lifting mechanism (42), it drives the material pushing arm (43) to move up and down, so that the material pushing arm (43) pushes or pulls the transfer structure (3) to move spirally along the spiral track (2), realizing the spiral conveying of the transfer structure (3) carrying materials along the spiral track (2).

2. The spiral conveying method according to claim 1, wherein, The material pushing arm (43) rotates along the reference circle of the spiral track (2). When the material pushing arm (43) runs uniformly along the reference circle for one cycle, the material pushing arm (43) moves up or down uniformly by one pitch.

3. The screw conveying method according to claim 2, wherein When the material pushing arm (43) pushes or pulls the transfer structure (3) to move spirally along the spiral track (2), it satisfies: Wherein: v 旋转 is the linear velocity of the stock pushing arm (43) rotating along the reference circle of the spiral track (2); v 上升 is the vertical rising or falling movement speed of the stock pushing arm (43); R is the radius of the spiral track (2); P is the pitch of the spiral track (2).

4. A screw conveying method according to claim 1, characterized in that A plurality of material pushing arms (43) are arranged at intervals along the axial direction of the central rotating shaft (412) on the lifting mechanism (42); the distance between two adjacent material pushing arms (43) on the adjacent layers of the spiral track (2) is equal to the pitch of the spiral track (2).

5. A screw conveying method according to claim 1, characterized in that, A plurality of lifting mechanisms (42) are arranged in the circumferential direction of the rotating frame (413) around the reference circle of the spiral track (2).

6. A spiral conveying method according to claim 1, wherein the lifting mechanism (42) comprises a transmission belt or a transmission chain (422) installed on the rotating frame (413) and a lifting driving mechanism (421) for driving the transmission belt or the transmission chain (422) to move, and the material pushing arm (43) is drivingly connected with the transmission belt or the transmission chain (422).

7. A screw conveying method according to claim 1, characterized in that, The spiral track (2) comprises a track connecting frame (21) and a track body (22); the track body (22) is connected to the machine frame (1) by using the track connecting frame (21), the track body (22) is provided with a chute (223), and the transfer structure (3) is slidably assembled in the chute (223).

8. A screw conveying method according to claim 7, wherein The track body (22) comprises a first track body (221) and a second track body (222), and the first track body (221) and the second track body (222) enclose the chute (223).

9. A screw conveying method according to claim 7, wherein The transfer structure (3) comprises a transfer frame (31), both sides of the upper end of the transfer frame (31) are provided with rolling wheels (32), guide rollers (33) are arranged on both the front and rear sides of the transfer frame (31), and a transfer position (34) is arranged at the lower end of the transfer frame (31); When the transfer structure (3) is assembled with the rail body (22), the rolling wheels (32) on both sides of the transfer frame (31) are respectively slidably mounted on the first rail body (221) and the second rail body (222); the transfer frame (31) passes through the chute (223), the guide rollers (33) on both sides of the transfer frame (31) are located in the chute (223), and the transfer position (34) is located below the rail body (22).

10. A spiral conveying method according to claim 1, characterized in that, An unloading station is provided at any desired position of the spiral track (2); The spiral track (2) further includes a discharge section (24) provided at the unloading station, and a discharge track (54) and a discharge device (5) are provided at the unloading station; During discharging, the transfer structure (3) carries the material and moves into the discharge section (24). The discharge device (5) drives the discharge section (24) to separate from the spiral track (2) and then dock with the discharge track (54). The discharge device (5) conveys the transfer structure (3) and the material to the discharge track (54) for discharging; After discharging, the discharge device (5) drives the discharge section (24) to reset, so that the discharge section (24) docks with the spiral track (2).

11. A screw conveying method according to claim 10, characterized in that, The discharge device (5) includes a material blocking mechanism (51) for blocking the transfer structure (3) from slipping, a discharge driving mechanism (52) for driving the discharge section (24) to move, and a pusher driving mechanism (53) for pushing the transfer structure (3) into the discharge track (54); When the transfer structure (3) carries the material and moves into the discharge section (24), the material blocking mechanism (51) blocks the transfer structure (3) to prevent the transfer structure (3) from slipping out of the discharge section (24); the discharge driving mechanism (52) drives the discharge section (24) equipped with the transfer structure (3) to move, so that the discharge section (24) docks with the discharge track (54), and the pusher driving mechanism (53) pushes the transfer structure (3) in the discharge section (24) into the discharge track (54) to complete discharging; After discharging, the discharge driving mechanism (52) drives the discharge section (24) to move and reset, so that the discharge section (24) docks with the spiral track (2).

12. A screw conveying method according to claim 11, characterized in that, A material blocking cover (25) for covering the discharge section (24) is provided at the discharge section (24); The material blocking mechanism (51) includes a material blocking driving mechanism (511) and a material blocking frame (512) drivingly connected to the material blocking driving mechanism (511). The material blocking frame (512) is provided with a first material blocking portion (513) and a second material blocking portion (514); During discharging, the transfer structure (3) carries the material and moves into the material blocking cover (25) of the discharge section (24). The material blocking driving mechanism (511) drives the material blocking frame (512) to move, so that the first material blocking portion (513) and the second material blocking portion (514) respectively block at both ends of the material blocking cover (25).

13. A spiral conveying system, comprising a spiral conveying method according to any one of claims 1 to 12.

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