Reflux conveying module and reflux conveying method

Abstract

The invention belongs to the technical field of automation equipment, and discloses a backflow conveying module and a backflow conveying method.The backflow conveying module comprises double-layer conveying equipment, backflow material taking equipment and two jacking transferring devices, and the double-layer conveying equipment is provided with an upper-layer conveying line and a lower-layer conveying line; the backflow material taking equipment comprises a backflow line body and a material taking platform used for material taking operation, the backflow line body is provided with a feeding end and a backflow end, and the backflow line body is used for guiding a material box to the material taking platform from the feeding end and guiding the material box to the backflow end from the material taking platform; one jacking and transferring device is arranged on the upper-layer conveying line and used for transferring the material boxes on the upper-layer conveying line to the feeding end, and the other jacking and transferring device is arranged on the lower-layer conveying line and used for transferring the material boxes sent out from the backflow end to the lower-layer conveying line. The backflow conveying module provided by the invention can solve the feeding and recycling problems of the material box, the automation degree is improved, the working hours are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automation equipment, and in particular to a reflux conveying module and a reflux conveying method. Background Art

[0002] On some automated production lines, material boxes can be recycled. After the materials in the boxes are unloaded, the production operators need to move the empty boxes a second time to prepare for loading the next material, which wastes a lot of work time and affects production efficiency.

[0003] Therefore, a reflux conveying module and a reflux conveying method are urgently needed to solve the above technical problems. Summary of the invention

[0004] The object of the present invention is to provide a reflux conveying module and a reflux conveying method, which can solve the problems of loading and recycling of material boxes, improve the degree of automation, reduce working hours and improve production efficiency.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, a reflux conveying module is provided, comprising a double-layer conveying device, a reflux material taking device and two lifting and moving devices, wherein the double-layer conveying device has an upper conveying line and a lower conveying line, and the reflux material taking device comprises a reflux line body and a material taking platform for material taking operation, wherein the reflux line body is provided with a feeding end and a reflux end, and the reflux line body is used to guide a material box from the feeding end to the material taking platform, and from the material taking platform to the reflux end;

[0007] One of the lifting and transferring devices is arranged on the upper conveying line, and is used to transfer the material box on the upper conveying line to the feeding end, and the other lifting and transferring device is arranged on the lower conveying line, and is used to transfer the material box sent out from the return end to the lower conveying line.

[0008] Preferably, the conveying direction of the upper conveying line is opposite to the conveying direction of the lower conveying line; and / or

[0009] The horizontal conveying direction of the lifting and transferring device is perpendicular to the conveying direction of the upper conveying line and / or the lower conveying line.

[0010] Preferably, the return line body comprises:

[0011] A frame, wherein the material taking platform is arranged on one side of the frame;

[0012] And provided on the frame:

[0013] The feeding conveyor line is arranged obliquely relative to the horizontal plane, with its upper end being the feeding end and its lower end facing the material taking platform;

[0014] The reflux conveyor line is arranged obliquely relative to the horizontal plane, with its lower end being the reflux end and its upper end facing the material taking platform;

[0015] A reversing device is provided with a box-bearing surface, and the reversing device can swing around a horizontal axis so that the inclination angle of the box-bearing surface can be selected to adapt to the inclination direction of the loading conveyor line and the return conveyor line, so as to receive the material box of the loading conveyor line or guide the material box to the return conveyor line.

[0016] Preferably, the reversing device comprises a reversing transmission line, the box-bearing surface is arranged on the reversing transmission line, and the reversing transmission line can rotate around a horizontal axis to adjust the inclination angle of the box-bearing surface; the reversing device also comprises:

[0017] A lifting platform assembly is used to drive the reversing transmission line to rise and fall, and the reversing transmission line is rotatably connected to the lifting platform assembly.

[0018] Preferably, a push rod is also installed at the bottom of the frame; the rotation axis of the reversing conveyor line is eccentrically arranged relative to its center of gravity, and when the reversing conveyor line is located at the lower port of the loading conveyor line, under the action of gravity, the side of the reversing conveyor line close to the loading conveyor line is tilted; when the reversing conveyor line is located at the upper port of the reflux conveyor line, the reversing conveyor line changes its deflection direction under the action of the push rod, and its side away from the reflux conveyor line is tilted.

[0019] Preferably, the reversing device comprises a reversing transmission line, the box-bearing surface is arranged on the reversing transmission line, and the reversing transmission line can rotate around a horizontal axis to adjust the inclination angle of the box-bearing surface; the reversing device also comprises:

[0020] A reversing drive component, wherein the reversing conveyor line is connected to the frame by rotating around a horizontal axis on one side close to the material picking platform, the body of the reversing drive component is connected to the frame, and the movable end of the reversing drive component is connected to the reversing conveyor line. The reversing drive component can drive the reversing conveyor line to swing up and down around the horizontal axis so that the reversing conveyor line can dock with the loading conveyor line or the reflux conveyor line.

[0021] Preferably, a push rod is also installed at the bottom of the frame; when the reversing device is docked with the feeding conveyor line, the push rod supports the bottom of the reversing conveyor line.

[0022] Preferably, the double-layer conveying equipment further comprises a conveying frame;

[0023] The upper conveyor line is arranged on the upper mounting portion of the conveyor frame, and the upper conveyor line includes a first conveyor electric roller and a plurality of first conveyor rollers arranged side by side, and the first conveyor electric roller is drivingly connected with the plurality of the first conveyor rollers to drive the plurality of the first conveyor rollers to rotate in the same direction therewith; and / or

[0024] The lower conveyor line is arranged at the lower mounting portion of the conveyor frame, and the lower conveyor line includes a second conveying electric roller and a plurality of second conveying rollers arranged side by side, and the second conveying electric roller is transmission-connected to the plurality of second conveying rollers to drive the plurality of second conveying rollers to rotate in the same direction therewith.

[0025] Preferably, both sides of the upper conveyor line and / or the lower conveyor line are provided with conveying guide plates extending in the same direction therewith, and the conveying guide plates are mounted on the conveying frame through a width adjustment component;

[0026] The width adjustment assembly includes a fastening pin seat and an adjusting rod. The fastening pin seat is arranged on the conveying frame. One end of the adjusting rod is connected to the conveying guide plate. The adjusting rod is passed through the fastening pin seat along the width direction of the double-layer conveying equipment. The fastening pin seat can selectively lock the adjusting rod.

[0027] Preferably, the lifting and transferring device comprises:

[0028] A bottom box, fixed to the double-layer conveying equipment;

[0029] The first electric roller is rotatably mounted on the bottom box, and the end of the first electric roller is provided with a coaxially rotatable first cam;

[0030] A driven roller is rotatably mounted on the bottom box, and a second cam which can rotate coaxially is provided at the end thereof;

[0031] A synchronous connecting rod, one end of which is connected to the first cam, and the other end of which is connected to the second cam, and the first electric roller can drive the driven roller to rotate synchronously with the driven roller through the synchronous connecting rod;

[0032] The transfer platform is used for horizontally transferring material boxes. The transfer platform is slidably arranged on the bottom box along the vertical direction. The first cam and the second cam both push against the bottom of the transfer platform.

[0033] Preferably, the transfer platform comprises:

[0034] A transfer rack, slidably connected to the bottom box in a vertical direction;

[0035] A second electric roller is rotatably mounted on the transfer rack;

[0036] The transfer assembly comprises a transfer belt and a plurality of transfer wheels. The transfer belt is sleeved on the outer wall of the plurality of transfer wheels and the second electric roller. The second electric roller can drive the transfer belt to rotate to horizontally transfer the material box.

[0037] In a second aspect, a reflux transport method is provided, which is implemented by the reflux transport module as described above, and the reflux transport method comprises the following steps:

[0038] Putting the material box into the upper conveyor line so that the material box is conveyed along the upper conveyor line to the outside of the feed end of the return line body;

[0039] The lifting and transferring device provided on the upper conveying line lifts the material box and drives the material box to move toward the feeding end;

[0040] The material box moves along the return line to the material taking platform so as to take the material in the material box;

[0041] The material box moves along the return line to the return end and slides out from the return end;

[0042] The lifting and transferring device provided on the lower conveying line receives the material box sliding out from the return end and transfers the material box to the lower conveying line;

[0043] The lower conveying line drives the material box to flow back to recycle the material box.

[0044] Preferably, the return line body includes a reversing device and a loading conveyor line and a return conveyor line respectively arranged obliquely relative to a horizontal plane, the upper end of the loading conveyor line is the feeding end, and the lower end faces the material taking platform, the lower end of the return conveyor line is the return end, and the upper end faces the material taking platform; the reversing device is provided with a box-bearing surface, and the reversing device can swing around a horizontal axis so that the inclination angle of the box-bearing surface can be selected to adapt to the inclination direction of the loading conveyor line and the return conveyor line, so as to receive the material box of the loading conveyor line or guide the material box to the return conveyor line;

[0045] The material box moves along the return line to the material taking platform, including:

[0046] After the material box enters from the upper port of the loading conveyor line, it slides downward along the loading conveyor line and slides out from the lower port of the loading conveyor line;

[0047] The reversing device is docked with the lower port of the feeding conveyor line, so as to receive the material box that slides out from the feeding conveyor line for taking the material in the material box; and / or

[0048] The material box moves along the return line to the return end and slides out from the return end, comprising:

[0049] The reversing device moves toward the direction close to the return conveying line and adapts to the inclined direction of the return conveying line, and adjusts the inclined angle of the receiving box surface to dock with the upper port of the return conveying line;

[0050] The material box slides downward along the return conveying line and slides out from the lower port of the return conveying line.

[0051] Beneficial effects of the present invention:

[0052] The reflux conveying module provided by the present invention is a double-layer conveying equipment with an upper conveying line and a lower conveying line, which are respectively used for feeding and conveying of material boxes. During operation, the operator places the material box carrying materials on the upper conveying line, and the material box is conveyed along the upper conveying line to the feeding end of the reflux line body. After it is in place, the jacking and moving device arranged on the upper conveying line lifts the material box and drives the material box to move from the feeding end into the reflux line body. The material box first moves along the reflux line body to the material taking platform. After the operator takes the material in the material box from the material taking platform, the material box moves along the reflux line body and slides out from the reflux end. After the jacking and moving device arranged on the lower conveying line receives the slid-out material box, it moves the material box to the lower conveying line, and the lower conveying line conveys the material box to complete the recovery. By setting up double-layer conveying equipment that can simultaneously load and recycle material boxes and reflux material-collecting equipment with a reflux function, the material boxes are transferred between the two through a jacking and transferring device, which solves the problem of loading and recycling material boxes, improves the degree of automation, reduces working hours, and improves production efficiency.

[0053] The reflux conveying method provided by the present invention simultaneously loads the material box and recovers the material box through a double-layer conveying device, and also drives the material box to move in sequence along the feeding end, the material taking platform and the reflux end through the reflux line body, and relies on two jacking and transferring devices to transfer the material box between the upper conveying line and the feeding end of the reflux line body, and between the reflux end of the reflux line body and the lower conveying line, so as to solve the problems of loading and recovering the material box, improve the degree of automation, reduce working hours, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a structural schematic diagram of the reflux conveying module provided by the present invention;

[0055] Figure 2 It is a structural schematic diagram of the double-layer conveying equipment provided by the present invention;

[0056] Figure 3 It is a schematic diagram of the installation structure of the conveying guide plate provided by the present invention;

[0057] Figure 4 It is a structural schematic diagram of the reflux material taking equipment provided by the present invention;

[0058] Figure 5It is a partial structural schematic diagram of the reflux material taking equipment provided by the present invention;

[0059] Figure 6 It is a structural schematic diagram of the rack provided by the present invention;

[0060] Figure 7 It is a partial structural schematic diagram of the reversing device provided by the present invention;

[0061] Figure 8 is a schematic structural diagram of a reflux material taking device provided by another embodiment of the present invention;

[0062] Fig. 9 is a partial structural schematic diagram of a reversing device provided by another embodiment of the present invention;

[0063] Fig.10 It is a structural schematic diagram of the lifting and transferring device provided by the present invention;

[0064] Fig.11 It is a partial structural schematic diagram of the lifting and transferring device provided by the present invention;

[0065] Fig.12 It is a partial structural front view of the lifting and transferring device provided by the present invention;

[0066] Fig.13 It is a structural schematic diagram of the synchronous connecting rod provided by the present invention;

[0067] Fig.14 It is a schematic diagram of the connection between the second electric roller and the transfer assembly provided by the present invention.

[0068] Fig.15 It is a flow chart of the steps of the reflux conveying method provided by the present invention.

[0069] In the figure:

[0070] 100, double-layer conveying equipment; 110, upper conveying line; 111, first conveying electric roller; 112, first conveying roller; 120, lower conveying line; 121, second conveying electric roller; 122, second conveying roller; 130, conveying frame; 140, conveying guide plate; 141, mounting groove; 150, width adjustment component; 151, fastening pin seat; 152, adjusting rod; 153, connecting bolt; 154, fastening pin; 155, locking nut;

[0071] 200, reflux reclaiming equipment; 210, reclaiming rack; 211, reclaiming platform; 212, avoidance gap; 213, lighting component; 220, frame; 221, first crossbar; 222, second crossbar; 2221, avoidance groove; 223, third crossbar; 224, fourth crossbar; 225, first hinge seat; 226, second hinge seat; 227, push rod; 2271, connecting part; 2272, push part; 228, third hinge seat; 230, feeding conveyor line; 231, feeding roller; 232, feeding guide plate; 233, feeding guide block; 240, reflux conveyor line; 241, reflux roller; 242, reflux guide plate; 243, reflux guide block; 250, reversing device; 2501, bearing box surface; 251, lifting platform assembly; 2511, lifting drive; 2512, lifting seat; 2513, lifting guide rod; 2514, lifting guide sleeve; 252, reversing transmission line; 2521, swing seat; 2522, reversing raceway; 2523, reversing guide plate; 25231, guide part; 253, inclination adjustment assembly; 2531, adjustment drive; 2532, adjustment support block; 254, reversing drive; 255, material stop block; 256, supporting seat; 257, swing shaft; 260, material stop assembly; 261, material stop drive; 262, movable stop rod; 263, material stop hook plate;

[0072] 300, lifting and transferring device; 310, bottom box; 311, position sensor; 312, lifting mounting plate; 313, height limiting flange; 314, guide shaft; 320, transfer platform; 321, transfer frame; 322, lifting roller; 323, linear bearing; 330, first electric roller; 331, first cam; 340, driven roller; 341, second cam; 350, synchronous connecting rod; 351, main body; 352, curved rod; 353, pin column; 354, induction part; 355, limit part; 356, reinforcing rib; 360, second electric roller; 370, transfer assembly; 371, transfer belt; 372, transfer pulley;

[0073] 400. Material box. DETAILED DESCRIPTION

[0074] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0075] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature.

[0077] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0078] Embodiment 1:

[0079] Please refer to Figure 1 The present embodiment provides a reflux conveying module for conveying material carriers on an automated production line, such as a material box 400. The present embodiment takes the material box 400 as the conveying object, first conveys the material box 400 containing the material to the material taking station, and then recycles the material box 400 after the operator takes out the material from the material box 400, so as to solve the material loading and recycling problems of the material box 400.

[0080] Please refer to Figure 1-Figure 7The reflux conveying module includes a double-layer conveying device 100, a reflux material-collecting device 200 and two lifting and moving devices 300. The double-layer conveying device 100 has an upper conveying line 110 and a lower conveying line 120. The reflux material-collecting device 200 includes a reflux line body and a material-collecting rack 210. The material-collecting rack 210 is provided with a material-collecting platform 211. The operator can take the material in the material box 400 out to the material-collecting platform 211. The reflux line body is provided with a feeding end and a reflux end. The reflux line body is used to guide the material box 400 from the feeding end to the material-collecting platform 211, and from the material-collecting platform 211 to the reflux end. Among them, the upper conveyor line 110 is used to transport the material box 400, and one of the lifting and moving devices 300 is arranged on the upper conveyor line 110, which is used to move the material box 400 on the upper conveyor line 110 to the feeding end; the lower conveyor line 120 is used to transport the material box 400 backflow, and another lifting and moving device 300 is arranged on the lower conveyor line 120, which is used to move the material box 400 sent out from the reflux end to the lower conveyor line 120.

[0081] Specifically, the double-layer conveying device 100 is provided with an upper conveying line 110 and a lower conveying line 120, which are respectively used for feeding and recycling of the material box 400. During operation, the operator places the material box 400 loaded with materials on the upper conveying line 110, and the material box 400 is transported along the upper conveying line 110 to the feeding end of the return line body. After the material box 400 is in place, the lifting and moving device 300 provided on the upper conveying line 110 lifts the material box 400 and drives the material box 400. The material box 400 is first moved along the return line body from the feeding end to the material taking platform 211. After the operator takes the material in the material box 400 from the material taking platform 211, the material box 400 moves along the return line body and slides out from the return end. The lifting and moving device 300 provided on the lower conveying line 120 receives the sliding material box 400 and moves the material box 400 to the lower conveying line 120. The lower conveying line 120 transfers the material box 400 to complete the recycling. By providing a double-layer conveying device 100 that can simultaneously load the material box 400 and recycle the material box 400 and a reflow material taking device 200 with a reflow function, the material box 400 is transferred and delivered between the two through the lifting and moving device 300, which solves the problems of loading and recycling the material box 400, improves the degree of automation, reduces working hours, and improves production efficiency.

[0082] For example, please refer to Figure 2 The double-layer conveying equipment 100 also includes a conveying frame 130. The upper conveying line 110 is arranged on the upper mounting portion of the conveying frame 130, and the lower conveying line 120 is arranged on the lower mounting portion of the conveying frame 130. The conveying direction of the upper conveying line 110 is opposite to the conveying direction of the lower conveying line 120. The operator can place the material box 400 and the recovery material box 400 at the same end of the double-layer conveying equipment 100 to facilitate the recycling of the material box 400.

[0083] For example, in order to reduce equipment costs, especially the equipment costs of power structures, please continue to refer to Figure 2 The upper conveyor line 110 includes a first conveying electric roller 111 and a plurality of first conveying rollers 112 arranged side by side along its conveying direction. The first conveying electric roller 111 is connected to the plurality of first conveying rollers 112 by transmission to drive the plurality of first conveying rollers 112 to rotate in the same direction therewith. During transmission, the first conveying electric roller 111 and the plurality of first conveying rollers 112 jointly carry and drive the material box 400 to move horizontally. Since the first conveying electric roller 111 has its own motor and is a standard component, its purchase cost and installation and commissioning cost are relatively low. In this embodiment, the first conveying electric roller 111 is arranged in the middle position of the plurality of first conveying rollers 112, and the adjacent first conveying electric rollers 111 and the first conveying rollers 112, and the adjacent two and the first conveying rollers 112 are all driven by belts respectively wound around their two ends to improve stability and synchronization.

[0084] For example, in order to reduce equipment costs, especially the equipment costs of power structures, please continue to refer to Figure 2 Similar to the upper conveyor line 110, the lower conveyor line 120 includes a second conveyor electric roller 121 and a plurality of second conveyor rollers 122 arranged side by side. The second conveyor electric roller 121 is connected to the plurality of second conveyor rollers 122 by transmission to drive the plurality of second conveyor rollers 122 to rotate in the same direction therewith. During transmission, the second conveyor electric roller 121 and the plurality of second conveyor rollers 122 jointly carry and drive the material box 400 to move horizontally. Since the second conveyor electric roller 121 has its own motor and is a standard component, its purchase cost and installation and commissioning cost are relatively low. In this embodiment, the second conveyor electric roller 121 is arranged in the middle position of the plurality of second conveyor rollers 122, and the adjacent second conveyor electric rollers 121 and the second conveyor rollers 122 are connected by belts respectively wound around their two ends to improve stability and synchronization.

[0085] For example, in order to prevent the material box 400 from deviating from the moving line during the horizontal transmission process, please continue to refer to Figure 2 Both sides of the upper conveying line 110 and / or the lower conveying line 120 are provided with conveying guide plates 140 extending in the same direction therewith, and the conveying guide plates 140 can limit the position of the material box 400 perpendicular to the conveying direction.

[0086] Further, in order to improve adaptability and flexibility to accommodate bins 400 of different widths, please refer to Figure 2 and Figure 3The conveying guide plate 140 is installed on the conveying frame 130 through the width adjustment component 150, so that the distance between the two conveying guide plates 140 arranged side by side can be adjusted. Specifically, the width adjustment component 150 includes a fastening pin seat 151 and an adjusting rod 152. The conveying frame 130 is provided with a plurality of mounting holes in the conveying direction. The fastening pin seat 151 can be fixed to any mounting hole on the conveying frame 130 by a fastening bolt. The outer side of the conveying guide plate 140 is provided with an embedding groove 141 extending in the same direction therewith. One end of the adjusting rod 152 is provided with a connecting bolt 153. The nut of the connecting bolt 153 is slidably arranged in the embedding groove 141, thereby realizing the connection between the adjusting rod 152 and the conveying guide plate 140; the adjusting rod 152 is penetrated by the fastening pin seat 151 along the width direction of the double-layer conveying equipment 100, and the fastening pin seat 151 is threadedly connected with a fastening pin 154, which can be selectively pressed against the peripheral wall of the adjusting rod 152, thereby selectively locking the adjusting rod 152, and the locking state can be maintained by a locking nut 155 threadedly connected to the fastening pin 154. When it is necessary to adjust the distance between the two conveying guide plates 140, loosen the locking nut 155 of the corresponding fastening pin 154, pull the adjusting rod 152 to adjust its relative position with the fastening pin seat 151, and after adjusting to the preset distance, re-lock the locking nut 155 of the fastening pin 154.

[0087] For example, please refer to Figure 2 Each conveying guide plate 140 is installed on the conveying frame 130 through at least two width adjustment components 150, which can not only adjust the distance between the two conveying guide plates 140, but also adjust the deflection angle of the conveying guide plate 140 in the horizontal plane.

[0088] For example, please refer to Figure 2 At least two conveying guide plates 140 with different height positions may be provided corresponding to a certain side of the upper conveying line 110 or the lower conveying line 120 to further improve the guiding reliability.

[0089] For example, please refer to Figure 4-Figure 7 The return line body includes a frame 220 and a loading conveyor line 230, a return conveyor line 240 and a reversing device 250 arranged on the frame 220, wherein the loading conveyor line 230 is arranged tilted relative to the horizontal plane, its upper end is the feeding end, and its lower end faces the material taking platform 211, and the return conveyor line 240 is also arranged tilted relative to the horizontal plane, its lower end is the return end, and its upper end faces the material taking platform 211, the loading conveyor line 230 and the return conveyor line 240 are inclined in opposite directions, and the return conveyor line 240 is arranged below the loading conveyor line 230. The reversing device 250 can swing around the horizontal axis so that the inclination angle of the receiving box surface 2501 can select one of the inclination directions of the loading conveyor line 230 and the return conveyor line 240 to receive the material box 400 of the loading conveyor line 230 or guide the material box 400 to the return conveyor line 240.

[0090] For example, please refer to Figure 4-Figure 7 The material retrieving rack 210 is installed on one side of the rack 220, and the feeding conveyor line 230, the return conveyor line 240 and the reversing device 250 are installed in the frame body of the rack 220. The feeding end and the return end are both located on the side of the rack 220 away from the material retrieving rack 210, so as to transfer the material box 400 between the double-layer conveying equipment 100. The reversing device 250 can selectively dock with the feeding conveyor line 230 or the return conveyor line 240. When the reversing device 250 docks with the feeding conveyor line 230, the height of the bearing surface of the reversing device 250 for receiving the material box 400 is lower than the retrieving platform 211, so that the height of the retrieving port (located at the upper end) of the material box 400 on it is close to the height of the retrieving platform 211, which is convenient for the operator to retrieve the material. During operation, a lifting and transferring device 300 moves the material box 400 from the upper conveyor line 110 into the upper end of the loading conveyor line 230, and the material box 400 slides along the loading conveyor line 230 toward the material picking platform 211. When the material box 400 slides out from the lower end of the loading conveyor line 230, the reversing device 250 has been docked with the loading conveyor line 230. The reversing device 250 receives the material box 400, and the material box 400 is located next to the material picking platform 211. The operator can take out materials from the material box 400 to the material picking platform 211. After the material is picked up, the reversing device 250 moves to the position and posture docking with the return conveyor line 240, and the material box 400 thereon slides to the return conveyor line 240, and the material box 400 slides out along the return conveyor line 240, and is then received by another lifting and transferring device 300, and finally the return of the material box 400 is realized through the lower conveyor line 120.

[0091] For example, please refer to Figure 4 The material taking platform 211 is provided with an avoidance gap 212, which is used to avoid the material box 400 received by the reversing device 250 when it is in the first posture. When the reversing device 250 is docked with the feeding conveyor line 230, the material box 400 protrudes from the avoidance gap 212 to the top of the material taking platform 211, which is convenient for operators to take materials.

[0092] For further information, please refer to Figure 4 The material retrieving platform 211 further includes a lighting element 213, which is installed above the material retrieving platform 211 and is arranged toward the material retrieving platform 211 to provide lighting for the operator of the material retrieving operation. Preferably, the lighting element 213 can be selected from LED lamp beads, lamp tubes, etc.

[0093] For example, please refer to Figure 4 and Figure 5The feeding conveyor line 230 includes a feeding roller 231 and a feeding guide plate 232 arranged in parallel. Both the feeding roller 231 and the feeding guide plate 232 are arranged obliquely relative to the horizontal plane, wherein at least two feeding rollers 231 are arranged side by side, and the feeding roller 231 includes a plurality of rollers distributed along its extension direction. Both sides of the feeding conveyor line 230 are provided with feeding guide plates 232, and one end of the feeding guide plate 232 close to the upper port of the feeding conveyor line 230 is provided with a feeding guide block 233, and the feeding guide block 233 is provided with a guiding arc surface extending outward gradually. Specifically, after the material box 400 is put in from the upper port of the feeding conveyor line 230, it slides downward along the feeding roller 231, during which the feeding guide plates 232 arranged on both sides define the sliding track of the material box 400, and the setting of the feeding guide block 233 facilitates the introduction of the material box 400 to avoid the situation of the box being stuck.

[0094] For example, please refer to Figure 4-Figure 6 A first cross bar 221 and a second cross bar 222 are provided on the frame 220. The first cross bar 221 and the second cross bar 222 are both arranged in the horizontal direction. The height of the first cross bar 221 is higher than the height of the second cross bar 222. The first cross bar 221 fixes and supports a part of the loading roller 231 close to the upper port of the loading conveyor line 230, and the second cross bar 222 fixes and supports a part of the loading roller 231 close to the lower port of the loading conveyor line 230. The horizontal inclination angle of the loading conveyor line 230 is determined by the support height difference of the first cross bar 221 and the second cross bar 222.

[0095] For example, please refer to Figure 4-Figure 6The reflux material taking device 200 also includes a material blocking assembly 260, which includes a material blocking driving member 261 and a movable blocking rod 262, wherein the body of the material blocking driving member 261 is installed on the frame 220, and the movable blocking rod 262 is installed on the output end of the material blocking driving member 261. Under the drive of the material blocking driving member 261, the movable blocking rod 262 can selectively extend from the lower port of the loading conveyor line 230 to block or release the material box 400 on the loading conveyor line 230. Specifically, the material blocking driving member 261 adopts a telescopic driving member such as a linear cylinder and an electric push rod, and its main body is rotatably connected to the first cross bar 221 through a first hinge seat 225, and the middle part of the movable blocking rod 262 is rotatably arranged on the second cross bar 222 through a second hinge seat 226. The second cross bar 222 is provided with an avoidance groove 2221 for avoiding the movable blocking rod 262. One end of the movable blocking rod 262 is hinged to the output end of the material blocking driving member 261, and the other end is provided with a material blocking hook plate 263. The material blocking hook plate 263 is set as an L-shaped plate structure. When the material blocking driving member 261 telescopes, it drives the movable blocking rod 262 to rotate around the horizontal axis so that the material blocking hook plate 263 selectively extends from the lower port of the loading conveyor line 230. In this embodiment, when the material blocking drive 261 retracts, the movable blocking rod 262 is provided with one end of a material blocking hook plate 263 which rotates upward, and the material blocking hook plate 263 rises from the bottom of the lower port of the loading conveyor line 230, which can limit the material box 400 from sliding out from the lower port of the loading conveyor line 230. After the reversing device 250 moves to the lower port of the loading conveyor line 230, the material blocking drive 261 extends out, and the material blocking hook plate 263 retracts from the lower port of the loading conveyor line 230 to allow the material box 400 to slide onto the reversing device 250.

[0096] For example, please refer to Figure 4 and Figure 5 The return conveying line 240 includes a return roller 241 and a return guide plate 242 which are arranged in parallel with each other. The return roller 241 and the return guide plate 242 are arranged obliquely relative to the horizontal plane. At least two return rollers 241 are arranged side by side. The return roller 241 includes a plurality of rollers distributed along its extension direction. Return guide plates 242 are arranged on both sides of the return conveying line 240. A return guide block 243 is arranged at one end of the return guide plate 242 close to the upper port of the return conveying line 240. The return guide block 243 is provided with a guide arc surface which gradually expands outward. Specifically, after the material box 400 enters the upper port of the return conveying line 240 from the reversing device 250, it slides downward along the return roller 241. During this period, the return guide plates 242 arranged on both sides define the sliding track of the material box 400. The arrangement of the return guide block 243 facilitates the introduction of the material box 400 to avoid the situation of the box being stuck.

[0097] For example, please refer to Figure 4-Figure 6The frame 220 is provided with a third crossbar 223 and a fourth crossbar 224, both of which are arranged in the horizontal direction, and the height of the third crossbar 223 is higher than that of the fourth crossbar 224. The third crossbar 223 fixes and supports a part of the return roller 241 close to the upper end of the return conveying line 240, and the fourth crossbar 224 fixes and supports a part of the return roller 241 close to the lower end of the return conveying line 240. The horizontal inclination angle of the return conveying line 240 is determined by the support height difference between the third crossbar 223 and the fourth crossbar 224. Specifically, the third crossbar 223 is arranged directly below the second crossbar 222 and directly below the first crossbar 221.

[0098] Exemplarily, when the reversing device 250 is docked with the lower end of the loading conveyor line 230, the height of the highest point of the box surface 2501 is not higher than the height of the lowest point of the loading roller 231, ensuring that the material box 400 on the loading conveyor line 230 can slide onto the reversing device 250. Further, the height difference between the highest point of the box surface 2501 and the lowest point of the loading roller 231 does not exceed one-fifth of the height of the material box 400, and the horizontal spacing between the box surface 2501 and the loading roller 231 is less than half of the width of the material box 400 in the conveying direction, ensuring that the material box 400 can slide smoothly onto the reversing device 250. Similarly, when the reversing device 250 is docked with the upper end of the return conveyor line 240, the height of the lowest point of the box surface 2501 is not lower than the height of the highest point of the return roller 241, ensuring that the material box 400 on the reversing device 250 can slide onto the return conveyor line 240. Furthermore, the height difference between the lowest point of the box surface 2501 and the highest point of the return flow raceway 241 does not exceed one-fifth of the height of the material box 400, and the horizontal spacing between the box surface 2501 and the return flow raceway 241 is less than half of the width of the material box 400 in the conveying direction, ensuring that the material box 400 can slide smoothly onto the return flow conveyor line 240.

[0099] As for the inclination angle of the reversing device 250, it can be set to be the same as the inclination angle of the loading conveyor line 230 or the return conveyor line 240 based on the requirement of smoothness, or it can be set to be slightly larger or slightly smaller than the inclination angle of the loading conveyor line 230 or the return conveyor line 240 based on the requirement of adjusting the conveying speed. The angle difference is preferably within 10°.

[0100] In this embodiment, when the reversing device 250 is docked with the lower port of the loading conveyor line 230, the box surface 2501 is coplanar with the conveying plane of the loading conveyor line 230, and the material box 400 can slide smoothly from the loading conveyor line 230 to the reversing device 250, reducing the shaking of the material box 400 during the transfer process and improving reliability. Figure 4 and Figure 5When the reversing device 250 is docked with the upper port of the return conveyor line 240, the box surface 2501 is coplanar with the conveying plane of the return conveyor line 240, and the material box 400 can slide from the reversing device 250 to the return conveyor line 240 smoothly, reducing the jitter of the material box 400 during the transfer process and improving reliability.

[0101] For example, the reversing device 250 can swing relative to the frame 220, so as to adjust the tilt direction of the box surface 2501. Figure 5 and Figure 7 The reversing device 250 includes a lifting platform assembly 251 and a reversing transmission line 252. The box surface 2501 is arranged on the reversing transmission line 252. The reversing transmission line 252 can rotate around a horizontal axis to adjust the inclination angle of the box surface 2501. The lifting platform assembly 251 is used to drive the reversing transmission line 252 to rise and fall. The box surface 2501 is arranged on the reversing transmission line 252. The reversing transmission line 252 is rotatably connected to the lifting platform assembly 251. The reversing transmission line 252 can rotate around a horizontal axis to adjust the inclination angle of the box surface 2501. Specifically, the lifting platform assembly 251 includes a lifting seat 2512, two lifting drive parts 2511, a plurality of lifting guide rods 2513 and a plurality of lifting guide sleeves 2514, wherein the reversing transmission line 252 is rotatably installed on the lifting seat 2512 through a swing shaft 257, a plurality of lifting guide sleeves 2514 are installed on both sides of the lifting seat 2512, and a plurality of lifting guide rods 2513 arranged along the vertical direction are distributed on both sides of the frame 220. The lifting seat 2512 can be lifted and lowered in the vertical direction relative to the frame 220 through the one-to-one sliding cooperation between the lifting guide sleeves 2514 and the lifting guide rods 2513. The lifting drive member 2511 adopts telescopic drive members such as linear cylinders and electric push rods. The lifting drive members 2511 are installed on both sides of the lifting seat 2512. The movable ends of the two lifting drive members 2511 are respectively connected to the two sides of the lifting seat 2512. The two lifting drive members 2511 drive the lifting seat 2512 and the reversing conveyor line 252 to rise and fall together through synchronous telescopic actions, so that the reversing device 250 can be connected to the loading conveyor line 230 and the reflux conveyor line 240 respectively.

[0102] For example, please refer to Figure 5 and Figure 7, the rotation axis of the reversing conveying line 252 is eccentrically arranged relative to its center of gravity. The side of the reversing conveying line 252 that is away from the loading conveying line 230 and the return conveying line 240 has a greater weight relative to the rotation axis of the reversing conveying line 252. Therefore, in a natural state, the side of the reversing conveying line 252 that is close to the loading conveying line 230 and the return conveying line 240 is always tilted upward. Specifically, when the reversing conveying line 252 is located at the lower end of the loading conveying line 230, under the action of gravity, the reversing conveying line 252 is in a first state, which is: the side of the reversing conveying line 252 that is close to the loading conveying line 230 is tilted, and in this state, the box surface 2501 is coplanar with the conveying plane of the loading conveying line 230.

[0103] For example, please refer to Figure 5 and Figure 6 A push rod 227 is also installed at the bottom of the frame 220. The push rod 227 includes a connecting portion 2271 and a pushing portion 2272. The connecting portion 2271 is arranged along the height direction, and its lower end is connected to the frame 220, and the upper end is connected to the pushing portion 2272. The pushing portion 2272 is extended along the horizontal direction and is arranged below the side of the reversing conveyor line 252 away from the feeding conveyor line 230 and the reflux conveyor line 240. When the reversing conveyor line 252 approaches the upper port of the reflow conveyor line 240, the reversing conveyor line 252 can swing under the action of the pushing portion 2272 of the pushing rod 227 until the reversing conveyor line 252 is in the lowest point position where it is completely docked with the upper port of the reflow conveyor line 240. The reversing conveyor line 252 then swings to a second state, wherein the reversing conveyor line 252 is tilted away from one side of the reflow conveyor line 240, and in this state the box surface 2501 is coplanar with the conveying plane of the reflow conveyor line 240.

[0104] Exemplarily, the height of the pushing portion 2272 of the pushing rod 227 is higher than the highest point of the reflux conveyor line 240, and the pushing portion 2272 is fixed. During the descent of the reversing conveyor line 252, such as when the reversing conveyor line 252 descends to the first preset position, the pushing portion 2272 of the pushing rod 227 can resist one end of the reversing conveyor line 252. At this time, the reversing conveyor line 252 continues to descend. Since one end of the reversing conveyor line 252 is resisted by the pushing portion 2272 of the pushing rod 227 at this time, the reversing conveyor line 252 can continuously change the inclination angle under the action of the pushing portion 2272 during the continued descent of the reversing conveyor line 252. Until the reversing conveyor line 252 descends to the second preset position, the reversing conveyor line 252 swings to the second state: the side away from the reflow conveyor line 240 is tilted, and in this state, the box surface 2501 is coplanar with the conveying plane of the reflow conveyor line 240.

[0105] It can be seen that the reversing conveyor line 252 always maintains an inclination in the same direction as the loading conveyor line 230 in the absence of external force. When it descends to the upper port of the reflux conveyor line 240, under the action of the pushing portion 2272 of the pushing rod 227, the reversing conveyor line 252 deflects to the other side and remains in a state of being inclined in the same direction as the reflux conveyor line 240, thereby realizing adaptive adjustment of the inclination angle of the supporting box surface 2501. The design is ingenious and does not require additional power to drive the deflection, thereby reducing equipment cost and control cost.

[0106] In some other embodiments, the push rod 227 can also be set as an actively retractable push structure. For example, the push rod 227 can be composed of a linear drive member such as a linear cylinder or an electric push rod and a push rod structure. The driving end of the linear drive member is vertically arranged upward and connected to the push rod structure. Initially, the linear drive member is in a retracted state. When the reversing transmission line 252 drops to the second preset position, the linear drive member drives the push rod structure to rise upward to push the reversing transmission line 252 away from the side of the return transmission line 240, so that the reversing transmission line 252 swings to the second state: the side away from the return transmission line 240 is tilted, and in this state, the box surface 2501 is coplanar with the transmission plane of the return transmission line 240.

[0107] For example, please refer to Figure 7 The reversing conveying line 252 includes a swing seat 2521, which is rotatably mounted on the lifting seat 2512 through a swing shaft 257. The swing seat 2521 is provided with two reversing rollers 2522 arranged side by side and two reversing guide plates 2523 arranged at intervals. The reversing rollers 2522 and the reversing guide plates 2523 are arranged parallel to each other. The reversing rollers 2522 are provided with a plurality of rollers distributed along the extension direction thereof, which are used to support and convey the material box 400. The reversing guide plates 2523 are used to limit the sliding track of the material box 400 on the reversing rollers 2522. Furthermore, both ends of the reversing guide plates 2523 are provided with guide parts 25231 extending outward gradually. The guide parts 25231 at both ends are arranged to facilitate the material box 400 to slide from the feeding conveying line 230 to the reversing conveying line 252, and to slide from the reversing conveying line 252 to the return conveying line 240, so as to avoid the occurrence of the box jam and improve the reliability.

[0108] For example, please refer to Figure 7 Two stopper blocks 255 are provided at the end of the reversing conveyor line 252 away from the loading conveyor line 230. The two stopper blocks 255 are arranged side by side and spaced apart. The stopper blocks 255 protrude upward from the supporting box surface 2501 to prevent the material box 400 from sliding downward.

[0109] For example, the inclination angle of the reversing transmission line 252 in the first state can be adjusted to improve versatility. Figure 7The reversing device 250 also includes an inclination adjustment component 253, which includes an adjusting drive 2531 and an adjusting support block 2532. The adjusting drive 2531 is installed at the movable end of the lifting platform component 251, specifically fixedly installed on the lifting seat 2512, and the adjusting support block 2532 is installed at the output end of the adjusting drive 2531. When the reversing transmission line 252 is in the first state, the adjusting support block 2532 supports the swing seat 2521 away from the side of the feeding transmission line 230. The adjusting drive 2531 can change the position of the adjusting support block 2532 to adjust the height or horizontal position of the swing seat 2521 supported by the adjusting support block 2532, thereby limiting the inclination angle of the reversing transmission line 252 in the first state. In this embodiment, the adjusting driving member 2531 adopts a telescopic driving member such as a linear cylinder or an electric push rod, and the movable end of the adjusting driving member 2531 is arranged vertically upward. The adjusting driving member 2531 adjusts the height of the support block 2532 through a telescopic action, thereby changing the height of the swing seat 2521 supported by the adjusting support block 2532. In other embodiments of the present invention, the adjusting driving member 2531 can also be arranged horizontally, and the deflection angle can be adjusted by changing the horizontal distance between the adjusting support block 2532 and the swing shaft 257. In some embodiments, the inclination adjustment component 253 can also adopt a power structure composed of a rotating driving member and a cam, and the height of the cam supporting the swing seat 2521 can be adjusted by changing the angle of the cam.

[0110] Exemplarily, the inclination angle of the reversing transmission line 252 in the second state is adjustable to improve versatility. Specifically, in some embodiments, the connecting portion 2271 of the push rod 227 can be set as a retractable sleeve rod structure, and the inclination angle of the reversing transmission line 252 in the second state can be adjusted by changing the height of the push portion 2272.

[0111] In another embodiment, the reversing device 250 may not be provided with a lifting structure, and the switching of the docking state is achieved by directly driving the reversing transmission line 252 to swing. Figure 8 and Fig. 9 The reversing device 250 includes a reversing drive 254 and a reversing conveying line 252. The reversing conveying line 252 is connected to the frame 220 by rotating around a horizontal axis at one side close to the material-collecting frame 210. The body of the reversing drive 254 is connected to the frame 220. The movable end of the reversing drive 254 is connected to the reversing conveying line 252. The reversing drive 254 can drive the reversing conveying line 252 to swing up and down around the horizontal axis, so that the reversing conveying line 252 can dock with the feeding conveying line 230 or the return conveying line 240. Specifically, when the reversing drive 254 drives the reversing conveying line 252 to swing upward to a first posture, the reversing conveying line 252 docks with the lower port of the feeding conveying line 230; when the reversing drive 254 drives the reversing conveying line 252 to swing downward to a second posture, the reversing conveying line 252 docks with the upper port of the return conveying line 240.

[0112] For details, please continue to refer to Figure 8 and Fig. 9 The reversing drive member 254 is a linear telescopic member such as a linear cylinder and an electric push rod. The end of the body is hinged to the frame 220 through the third hinge seat 228, and the telescopic drive end is hinged to the swing seat 2521 of the reversing transmission line 252. The reversing transmission line 252 can be driven to pitch and swing through the telescopic action of the reversing drive member 254, so that the reversing transmission line 252 can switch between the first posture and the second posture. Preferably, the telescopic stroke of the reversing drive member 254 is adjustable, so that the elevation angle of the reversing transmission line 252 in the first posture is adjustable, thereby improving versatility.

[0113] In some embodiments, the reversing drive member 254 may also adopt a power structure composed of a rotating drive member and a cam, and the height of the cam supporting the reversing transmission line 252 is adjusted by changing the angle of the cam, thereby driving the reversing transmission line 252 to pitch and swing.

[0114] In this embodiment, please refer to Fig. 9 The reversing device 250 further includes a supporting seat 256 , which is fixed to the frame 220 , and the swing seat 2521 is rotatably connected to the supporting seat 256 via a swing shaft 257 .

[0115] In this embodiment, please refer to Figure 8 and Fig. 9 When the reversing device 250 is in the first posture, the push rod 227 supports the bottom of the swing seat 2521 to improve stability.

[0116] For example, please refer to Figure 1 The horizontal conveying direction of the lifting and transferring device 300 is perpendicular to the conveying direction of the upper conveying line 110 and / or the lower conveying line 120. By changing the conveying direction of the material box 400 through the lifting and transferring device 300, the conveying line of the double-layer conveying equipment 100 and the conveying line of the reflux material taking equipment 200 can be arranged at 90°, making the layout of the reflux conveying module more compact and improving space utilization.

[0117] For example, please refer to Figure 10-Figure 14The lifting and transferring device 300 includes a bottom box 310, a first electric roller 330, a driven roller 340 and a transfer platform 320, wherein the bottom box 310 is installed on the conveying frame 130, the first electric roller 330 and the driven roller 340 are both rotatably installed on the bottom box 310, the first electric roller 330 and the driven roller 340 are arranged side by side at intervals, the end of the first electric roller 330 is provided with a first cam 331 which can rotate coaxially with its main body, the end of the driven roller 340 is provided with a second cam 341 which can rotate coaxially with its main body, the first electric roller 330 and the driven roller 340 are transmission-connected, the two can rotate synchronously at the same angular velocity, and then the first cam 331 and the second cam 341 can also rotate synchronously at the same angular velocity, the transfer platform 320 is used for horizontally transporting materials, the transfer platform 320 is slidably arranged on the bottom box 310 along the vertical direction, and the first cam 331 and the second cam 341 both push against the bottom of the transfer platform 320. The first cam 331 and the second cam 341 have the same shape and size, and their initial angles are also the same. When the first electric roller 330 starts to rotate, it drives the first cam 331 and the second cam 341 to rotate synchronously, driving the transfer platform 320 to rise or fall.

[0118] For further information, please refer to Fig.11 and Fig.13 The lifting and transferring device 300 further includes a synchronous connecting rod 350 , one end of which is connected to the first cam 331 , and the other end of which is connected to the second cam 341 . The first electric roller 330 can drive the driven roller 340 to rotate synchronously with the first electric roller 330 through the synchronous connecting rod 350 .

[0119] Specifically, the first electric roller 330 drives the driven roller 340 to rotate synchronously through the synchronous connecting rod 350, and the first cam 331 and the second cam 341 jointly lift the transfer platform 320, and the transfer platform 320 itself can transport materials horizontally. Since the main body structure of the first electric roller 330 is simple and belongs to a standard component, compared with the solution of using multiple hydraulic / pneumatic lifting units, the procurement and maintenance costs are lower, and the first cam 331 and the second cam 341 realize rigid mechanical linkage through the synchronous connecting rod 350, and there is no need to set up multiple sensors and controllers to coordinate the actions of different components. The rotation of the first electric roller 330 can naturally drive the transfer platform 320 to rise and fall smoothly, without the need for a complex closed-loop control system, which not only reduces the complexity of circuit design, but also reduces the failure rate, and is more convenient for maintenance.

[0120] For example, please refer to Fig.10The lifting and transferring device 300 also includes two lifting mounting plates 312, both of which are installed on the bottom box 310, and the two lifting mounting plates 312 are respectively arranged at the two ends of the first electric roller 330 and the driven roller 340, and the two ends of the first electric roller 330 and the driven roller 340 are respectively rotatably arranged on the lifting mounting plates 312 through radial bearings such as deep groove ball bearings.

[0121] For example, in order to ensure the reliability of the transmission connection between the first electric roller 330 and the driven roller 340, the synchronous connecting rod 350 is set to a rigid structure, please refer to Figure 11-13 The synchronous connecting rod 350 includes an integrated main body 351 and two curved rods 352, wherein the main body 351 is extended along the spacing direction of the first electric roller 330 and the driven roller 340, and the two curved rods 352 are respectively arranged at the two ends of the main body 351, one end of the curved rod 352 is connected to the main body 351, and the other end is rotatably connected to the first cam 331 or the second cam 341. When the first electric roller 330 drives the first cam 331 to rotate, the synchronous connecting rod 350 rotates around the axis of the first electric roller 330, and its posture remains unchanged during the rotation, and the second cam 341 and the driven roller 340 rotate synchronously with the first electric roller 330 at the same angular velocity, and the synchronization of the movement is guaranteed. In addition, the setting of the curved rod 352 can avoid the structure of the first electric roller 330 and the driven roller 340 extending along the axis, which is used to connect the jacking mounting plate 312.

[0122] For example, in order to realize the rotation connection between the synchronization link 350 and the first cam 331 and the second cam 341, please refer to Figure 11-13 A connecting hole (not shown in the figure) is provided on the first cam 331 and the second cam 341, and a pin portion 353 is provided on the curved rod portion 352. The pin portion 353 is inserted into the connecting hole, and the pin portion 353 can rotate relative to the connecting hole. This connecting structure can realize the functions of rotational connection and power transmission, and is simple and reliable.

[0123] In some embodiments, a pin portion 353 may be provided on the first cam 331 and the second cam 341 , and a connecting hole may be provided on the curved rod portion 352 , which can also realize the functions of rotational connection and power transmission.

[0124] For example, in order to detect the lifting state of the transfer platform 320 in real time, please refer to Figure 11-13The synchronous connecting rod 350 also includes a sensing part 354, which is protruding from the side of the main body 351 along the height direction. The lifting and transferring device 300 also includes a position sensor 311, which is installed on the bottom box 310. The position sensor 311 is used to detect the position of the sensing part 354. Specifically, two position sensors 311 are provided, and the two position sensors 311 are spaced along the length direction of the synchronous connecting rod 350. The first electric roller 330 rotates at different angles, and the horizontal positions of the sensing part 354 are also different. The two position sensors 311 can detect the sensing part 354 at the two end limit positions of the reciprocating motion of the sensing part 354, which correspond to the limit angles of the first electric roller 330 rotating in the clockwise and counterclockwise direction, and also the fully lifted and fully lowered states of the transfer platform 320. This setting can cleverly indirectly detect the lifting state of the transfer platform 320, and the detection principle is simple and easy to install.

[0125] For example, in order to structurally limit the rotation limit angle of the first cam 331, please refer to Figure 11-13 The synchronous link 350 further includes a limiting portion 355, which is convexly arranged on the side of the main body 351 along the height direction. The lifting mounting plate 312 is provided with a height limiting flange 313, which is located above or below the limiting portion 355 and is used to limit the height position of the synchronous link 350. In this embodiment, the limiting portion 355 is convexly arranged on the upper side of the main body 351 along the height direction, and the height limiting flange 313 is located above the limiting portion 355. When the first cam 331 rotates counterclockwise to the limit position, the upper edge of the limiting portion 355 abuts against the bottom of the height limiting flange 313; when the first cam 331 rotates clockwise to the limit position, the curved rod portion 352 approaches or abuts against the inner bottom of the bottom box 310. The arrangement of the limiting portion 355 and the height limiting flange 313 can indirectly limit the rotation limit angle of the first cam 331 in terms of structure, which not only improves the reliability but also simplifies the limiting structure, thereby helping to reduce the equipment cost.

[0126] For example, please refer to Fig.13 The synchronous link 350 is also provided with a reinforcing rib 356, which is arranged on the outer side of the main body 351 and extends in the same direction as the main body 351, which can significantly improve the structural strength of the synchronous link 350, further improve reliability and extend service life.

[0127] For example, please refer to Figure 10-Figure 14The transfer platform 320 includes a transfer frame 321, a second electric roller 360 and a transfer assembly 370, wherein the transfer frame 321 is slidably connected to the bottom box 310 in the vertical direction, the second electric roller 360 is rotatably installed on the transfer frame 321, and the second electric roller 360 is arranged in parallel between the first electric roller 330 and the driven roller 340, so as to effectively utilize the space in the equipment. The transfer assembly 370 includes a transfer belt 371 and a plurality of transfer pulleys 372, the transfer belt 371 is sleeved on the plurality of transfer pulleys 372 and the outer wall of the second electric roller 360, the outer wall of the second electric roller 360 drives the transfer belt 371 to rotate through the friction between the transfer belt 371 and the outer wall of the second electric roller 360, and the second electric roller 360 can drive the transfer belt 371 to rotate to horizontally transfer materials. When the first electric roller 330 drives the transfer platform 320 to rise, the transfer assembly 370 rises from between two adjacent first conveying rollers 112 or second conveying rollers 122 of the double-layer conveying equipment 100, or it can also rise from between the first conveying electric roller 111 and the first conveying roller 112, or between the second conveying electric roller 121 and the second conveying roller 122.

[0128] Exemplarily, one of the bottom box 310 and the transfer rack 321 is provided with a plurality of guide shafts 314 extending in the vertical direction, and the other is provided with a plurality of linear bearings 323, and the plurality of guide shafts 314 are correspondingly passed through the plurality of linear bearings 323. Figure 10-12 Linear bearings 323 are provided at the four corners of the transfer frame 321, and guide shafts 314 are correspondingly provided at the four corners of the bottom box 310. Through the linear sliding cooperation between multiple guide shafts 314 and the linear bearings 323, a stable guiding effect is provided for the lifting and lowering of the transfer platform 320.

[0129] For details, please refer to Figure 11-Figure 12 The transfer platform 320 further includes at least two lifting rollers 322, which are rotatably mounted on the transfer frame 321 around a horizontal axis and are located above the transfer frame 321. The lower end surface of the lifting roller 322 abuts against the upper end surface of the first cam 331 or the second cam 341. When the first electric roller 330 is working, the first cam 331 and the second cam 341 push the transfer platform 320 through their corresponding lifting rollers 322, converting sliding friction into rolling friction, thereby greatly reducing friction loss, making the lifting action smoother and extending the service life.

[0130] For example, to further improve the stability of the lifting action, please refer to Figure 10-11 A first cam 331 is disposed at both ends of the first electric roller 330. The two first cams 331 respectively correspond to the two lifting rollers 322 to increase the lifting action points and improve stability.

[0131] For example, to further improve the stability of the lifting action, please refer to Figure 10-11 A second cam 341 is provided at both ends of the driven roller 340, and the two second cams 341 respectively correspond to the two lifting rollers 322 to increase the lifting action points and improve the stability.

[0132] For example, in order to improve the stability of horizontal material transfer and control equipment costs, please refer to Figure 10-Figure 14 At least two transfer assemblies 370 are arranged side by side, and at least two transfer belts 371 are both connected to the second electric roller 360 by transmission. That is to say, one second electric roller 360 drives at least two transfer belts 371 to rotate at the same time. By having multiple transfer assemblies 370 arranged at intervals to carry materials together, the area for carrying materials is increased, which can significantly improve the stability of horizontal material transfer. In addition, multiple transfer assemblies 370 share one second electric roller 360, and there is no need to add a power structure, which can effectively control the equipment cost. In this embodiment, three transfer assemblies 370 are arranged side by side.

[0133] Embodiment 2:

[0134] like Fig.15 As shown, this embodiment provides a reflux transport method, which is implemented by the reflux transport module provided in the first embodiment, and specifically includes the following steps:

[0135] Put the material box 400 into the upper conveyor line 110, so that the material box 400 is conveyed along the upper conveyor line 110 to the outside of the feeding end of the return line body;

[0136] The lifting and moving device 300 provided on the upper conveying line 110 lifts the material box 400 and drives the material box 400 to move toward the feeding end;

[0137] The material box 400 moves along the return line to the material taking platform 211 so as to take the material in the material box 400;

[0138] The material box 400 moves along the return line to the return end and slides out from the return end;

[0139] The lifting and transferring device 300 provided on the lower conveying line 120 receives the material box 400 sliding out from the return end, and transfers the material box 400 to the lower conveying line 120;

[0140] The lower conveying line 120 drives the material box 400 to flow back to recycle the material box 400 .

[0141] Exemplarily, the specific steps for the material box 400 to move along the return line to the material taking platform 211 are:

[0142] After the material box 400 enters from the upper port of the loading conveyor line 230, it slides downward along the loading conveyor line 230 and slides out from the lower port of the loading conveyor line 230;

[0143] The reversing device 250 is docked with the lower end of the loading conveyor line 230 , so as to receive the material box 400 that slides out from the loading conveyor line 230 , so as to take out the materials in the material box 400 .

[0144] Exemplarily, the specific steps of the material box 400 moving along the return line to the return end and sliding out from the return end are:

[0145] The reversing device 250 moves toward the direction close to the return conveying line 240 and adapts to the inclined direction of the return conveying line 240, and adjusts the inclined angle of the receiving box surface 2501 to dock with the upper end of the return conveying line 240;

[0146] The material box 400 slides downward along the return conveying line 240 and slides out from the lower end of the return conveying line 240 .

[0147] The reflux conveying method provided in this embodiment simultaneously loads the material box 400 and the recovery material box 400 through the double-layer conveying equipment 100, and also drives the material box 400 to move in sequence along the feeding end, the material picking platform 211 and the reflux end through the reflux line body, and relies on two jacking and moving devices 300 to transfer the material box 400 between the upper conveying line 110 and the feeding end of the reflux line body, and between the reflux end of the reflux line body and the lower conveying line 120, so as to solve the loading and recovery problems of the material box 400, improve the degree of automation, reduce working hours, and improve production efficiency.

[0148] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A reflux transport module, characterized in that: The invention comprises a double-layer conveying device (100), a reflux material taking device (200) and two lifting and moving devices (300), wherein the double-layer conveying device (100) has an upper conveying line (110) and a lower conveying line (120), and the reflux material taking device (200) comprises a reflux line body and a material taking platform (211) for material taking operation, wherein the reflux line body is provided with a feeding end and a reflux end, and the reflux line body is used to guide a material box (400) from the feeding end to the material taking platform (211), and from the material taking platform (211) to the reflux end; One of the lifting and transferring devices (300) is arranged on the upper conveying line (110) and is used to transfer the material box (400) on the upper conveying line (110) to the feeding end, and the other of the lifting and transferring devices (300) is arranged on the lower conveying line (120) and is used to transfer the material box (400) sent out from the return end to the lower conveying line (120).

2. The reflux transport module according to claim 1, characterized in that: The conveying direction of the upper conveying line (110) is opposite to the conveying direction of the lower conveying line (120); and / or The horizontal conveying direction of the lifting and transferring device (300) is perpendicular to the conveying direction of the upper conveying line (110) and / or the lower conveying line (120).

3. The reflux transport module according to claim 1, characterized in that: The return line body comprises: A frame (220), wherein the material taking platform (211) is arranged on one side of the frame (220); and provided on the frame (220): A loading conveyor line (230) is arranged to be inclined relative to a horizontal plane, with an upper end thereof being the feeding end and a lower end thereof facing the material taking platform (211); A reflux conveying line (240) is arranged to be inclined relative to a horizontal plane, with a lower end thereof being the reflux end and an upper end thereof facing the material taking platform (211); A reversing device (250), wherein a box-bearing surface (2501) is provided on the reversing device (250), and the reversing device (250) can swing around a horizontal axis so that the inclination angle of the box-bearing surface (2501) can be selected to adapt to the inclination direction of the loading conveyor line (230) and the return conveyor line (240), so as to receive the material box (400) of the loading conveyor line (230) or guide the material box (400) to the return conveyor line (240).

4. The reflux transport module according to claim 3, characterized in that: The reversing device (250) comprises a reversing transmission line (252), the box-bearing surface (2501) is arranged on the reversing transmission line (252), and the reversing transmission line (252) can rotate around a horizontal axis to adjust the inclination angle of the box-bearing surface (2501); The reversing device (250) further includes: A lifting platform assembly (251), wherein the lifting platform assembly (251) is used to drive the reversing transmission line (252) to rise and fall, and the reversing transmission line (252) is rotatably connected to the lifting platform assembly (251).

5. The reflux transport module according to claim 4, characterized in that: A push rod (227) is also installed at the bottom of the frame (220); The rotation axis of the reversing conveyor line (252) is eccentrically arranged relative to its center of gravity. When the reversing conveyor line (252) is located at the lower port of the loading conveyor line (230), under the action of gravity, the side of the reversing conveyor line (252) close to the loading conveyor line (230) is tilted; when the reversing conveyor line (252) is located at the upper port of the reflux conveyor line (240), the reversing conveyor line (252) changes its deflection direction under the action of the push rod (227), and the side away from the reflux conveyor line (240) is tilted.

6. The reflux transport module according to claim 3, characterized in that: The reversing device (250) comprises a reversing transmission line (252), the box-bearing surface (2501) is arranged on the reversing transmission line (252), and the reversing transmission line (252) can rotate around a horizontal axis to adjust the inclination angle of the box-bearing surface (2501); the reversing device (250) also comprises: A reversing drive (254), the reversing conveying line (252) is connected to the frame (220) by rotating around a horizontal axis on one side close to the material taking platform (211), the body of the reversing drive (254) is connected to the frame (220), the movable end of the reversing drive (254) is connected to the reversing conveying line (252), and the reversing drive (254) can drive the reversing conveying line (252) to swing up and down around the horizontal axis so that the reversing conveying line (252) can dock with the loading conveying line (230) or the reflux conveying line (240).

7. The reflux transport module according to claim 6, characterized in that: A push rod (227) is also installed at the bottom of the frame (220); When the reversing device (250) is docked with the loading conveyor line (230), the push rod (227) supports the bottom of the reversing conveyor line (252).

8. The reflux transport module according to any one of claims 1 to 7, characterized in that: The double-layer conveying device (100) further comprises a conveying frame (130); The upper conveyor line (110) is arranged on an upper mounting portion of the conveyor frame (130), and the upper conveyor line (110) comprises a first conveyor electric roller (111) and a plurality of first conveyor rollers (112) arranged side by side, and the first conveyor electric roller (111) is drivingly connected to the plurality of first conveyor rollers (112) to drive the plurality of first conveyor rollers (112) to rotate in the same direction as the first conveyor roller (111); and / or The lower conveyor line (120) is arranged at the lower mounting portion of the conveyor frame (130), and the lower conveyor line (120) comprises a second conveyor electric roller (121) and a plurality of second conveyor rollers (122) arranged side by side, wherein the second conveyor electric roller (121) is transmission-connected to the plurality of second conveyor rollers (122) so as to drive the plurality of second conveyor rollers (122) to rotate in the same direction as the second conveyor electric roller (121).

9. The reflux transport module according to claim 8, characterized in that: Both sides of the upper conveyor line (110) and / or the lower conveyor line (120) are provided with conveying guide plates (140) extending in the same direction therewith, and the conveying guide plates (140) are installed on the conveying frame (130) through a width adjustment component (150); The width adjustment component (150) comprises a fastening pin seat (151) and an adjusting rod (152); the fastening pin seat (151) is arranged on the conveying frame (130); one end of the adjusting rod (152) is connected to the conveying guide plate (140); the adjusting rod (152) is passed through the fastening pin seat (151) along the width direction of the double-layer conveying device (100); and the fastening pin seat (151) can selectively lock the adjusting rod (152).

10. The reflux transport module according to any one of claims 1 to 7, characterized in that: The lifting and transferring device (300) comprises: A bottom box (310) fixed to the double-layer conveying device (100); A first electric roller (330) is rotatably mounted on the bottom box (310), and a first cam (331) that can rotate coaxially is provided at the end thereof; A driven roller (340) is rotatably mounted on the bottom box (310), and a second cam (341) that can rotate coaxially is provided at the end thereof; A synchronous connecting rod (350), one end of which is connected to the first cam (331) and the other end of which is connected to the second cam (341); the first electric roller (330) can drive the driven roller (340) to rotate synchronously with the first electric roller (330) through the synchronous connecting rod (350); The transfer platform (320) is used for horizontally transferring the material box (400). The transfer platform (320) is slidably arranged on the bottom box (310) along the vertical direction. The first cam (331) and the second cam (341) both push against the bottom of the transfer platform (320).

11. The reflux transport module according to claim 10, characterized in that: The transfer platform (320) comprises: A transfer rack (321) is slidably connected to the bottom box (310) in a vertical direction; A second electric roller (360) is rotatably mounted on the transfer rack (321); The transfer assembly (370) comprises a transfer belt (371) and a plurality of transfer pulleys (372); the transfer belt (371) is sleeved on the plurality of transfer pulleys (372) and the outer wall of the second electric roller (360); the second electric roller (360) can drive the transfer belt (371) to rotate so as to horizontally transfer the material box (400).

12. A reflux transport method, implemented by the reflux transport module according to any one of claims 1 to 11, characterized in that: The reflux conveying method comprises the following steps: Putting a material box (400) into the upper conveying line (110) so that the material box (400) is conveyed along the upper conveying line (110) to the outside of the feeding end of the return line body; The lifting and transferring device (300) provided on the upper conveying line (110) lifts the material box (400) and drives the material box (400) to move toward the feeding end; The material box (400) moves along the return line to the material taking platform (211) so as to take the material in the material box (400); The material box (400) moves along the return line to the return end and slides out from the return end; The lifting and transferring device (300) provided on the lower conveying line (120) receives the material box (400) sliding out from the return end, and transfers the material box (400) to the lower conveying line (120); The lower conveying line (120) drives the material box (400) to flow back to recycle the material box (400).

13. The reflux transport method according to claim 12, characterized in that: The return line body comprises a reversing device (250) and a loading conveyor line (230) and a return conveyor line (240) which are respectively arranged to be inclined relative to a horizontal plane, wherein the upper end of the loading conveyor line (230) is the feeding end and the lower end faces the material taking platform (211), and the lower end of the return conveyor line (240) is the return end and the upper end faces the material taking platform (211); a box receiving surface (2501) is provided on the reversing device (250), and the reversing device (250) can swing around a horizontal axis so that the inclination angle of the box receiving surface (2501) can be selected to adapt to the inclination direction of the loading conveyor line (230) and the return conveyor line (240), so as to receive the material box (400) of the loading conveyor line (230) or guide the material box (400) to the return conveyor line (240); The material box (400) moves along the return line to the material taking platform (211) including: After the material box (400) enters from the upper port of the loading conveyor line (230), it slides downward along the loading conveyor line (230) and slides out from the lower port of the loading conveyor line (230); The reversing device (250) is docked with the lower port of the loading conveyor line (230), thereby receiving the material box (400) that slides out from the loading conveyor line (230) to provide access to the material in the material box (400); and / or The material box (400) moves along the return line to the return end and slides out from the return end, comprising: The reversing device (250) moves in a direction close to the return conveying line (240), and adapts to the inclined direction of the return conveying line (240), and adjusts the inclined angle of the receiving box surface (2501) to dock with the upper end of the return conveying line (240); The material box (400) slides downward along the return conveying line (240) and slides out from the lower end of the return conveying line (240).

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