Double layer conveyor line

Abstract

The utility model provides a double-layer conveyor line, which relates to the technical field of product conveying, to solve the problem of large deformation of the conveyed parts when they are lifted up. The double-layer conveyor line includes an upper conveyor line and a lifting mechanism, the upper conveyor line includes a first conveying mechanism and a second conveying mechanism arranged relatively, the lifting mechanism includes a supporting component and two lifting transmission components-a first lifting transmission component and a second lifting transmission component, the supporting component is fixedly connected to the lifting transmission component and is used to support the conveyed parts, the first lifting transmission component is arranged around the first conveying mechanism, and the second lifting transmission component is arranged around the second conveying mechanism. It can reduce the deformation of the conveyed parts when they are lifted up.

Description

Technical Field

[0001] The utility model relates to the technical field of product conveying, in particular to a double-layer conveying line. Background Art

[0002] In an assembly line such as a double-layer belt line, the belt line can save labor and improve work efficiency, and is especially suitable for production lines that require reflow, further improving production efficiency. However, in the prior art, when the product pallet is used, it is usually necessary to manually place it on the bottom belt line and transport it back, which leads to low work efficiency and high labor costs.

[0003] In order to solve these problems, the lifting and positioning technology was introduced into the double-layer production line. This technology allows the material trays or other conveyed parts on the production line to be temporarily stored by lifting or lowering the lifting structure, avoiding the situation where the conveyed parts are too concentrated during the production process. The introduction of the lifting and positioning structure also solves the problem of the material tray being easily offset when the lifting structure is working, ensuring the precise position of the conveyed parts on the production line.

[0004] Especially in industries such as mobile phone assembly, in order to achieve online production of multiple devices, the application of double-sided assembly lines is becoming more and more widespread. In these assembly lines, products need to be lifted and clamped before they can be assembled. However, since the lifting space in the middle of the flow line is usually smaller than the product, the general lifting and positioning mechanism cannot fully support the entire surface of the product, resulting in the two sides of the product hanging in the air after lifting, and the force during assembly may cause the product to deform. Therefore, the lifting and positioning technology also needs to solve the problem of product hanging and deformation after lifting. Utility Model Content

[0005] The first purpose of the utility model is to provide a double-layer conveyor line to solve the technical problem that the existing conveyed parts are greatly deformed when being lifted up.

[0006] The double-layer conveyor line provided by the utility model comprises an upper conveyor line and a lifting mechanism, wherein the upper conveyor line comprises a first conveying mechanism and a second conveying mechanism arranged opposite to each other, the lifting mechanism comprises a supporting assembly and two lifting transmission assemblies - a first lifting transmission assembly and a second lifting transmission assembly, the supporting assembly is fixedly connected to the lifting transmission assembly and is used for supporting the conveyed object, the first lifting transmission assembly is arranged around the first conveying mechanism, and the second lifting transmission assembly is arranged around the second conveying mechanism.

[0007] The beneficial effects of the double-layer conveyor line of the utility model are:

[0008] In an optional technical solution, the jacking mechanism also includes a first jacking drive assembly and a second jacking drive assembly; the first jacking transmission assembly includes a first transmission member, the first transmission member is longitudinally fixedly connected to the power output end of the first jacking drive assembly, and the first transmission member is also slidably arranged on the outer side surface of the first conveying mechanism; the second jacking transmission assembly includes a second transmission member, the second transmission member is longitudinally fixedly connected to the power output end of the second jacking drive assembly, and the second transmission member is also slidably arranged on the outer side surface of the second conveying mechanism.

[0009] In an optional technical solution, the first lifting transmission assembly also includes a third transmission member, which is fixedly connected to the supporting assembly and fixedly arranged relative to the first transmission member, and the third transmission member is located on the downstream and upstream sides of the first conveying mechanism along the conveying direction; the second lifting transmission assembly also includes a fourth transmission member, which is fixedly connected to the supporting assembly and fixedly arranged relative to the second transmission member, and the fourth transmission member is located on the downstream and upstream sides of the second conveying mechanism along the conveying direction.

[0010] In an optional technical solution, the first transmission member is fixedly provided with a first bump and a third bump, and the second transmission member is fixedly provided with a second bump and a fourth bump;

[0011] The lifting mechanism further includes an upper limit assembly, the upper limit assembly includes an upper limit piece, the upper limit piece and the first conveying mechanism and the second conveying mechanism are arranged in a manner adjustable in height direction; the first protrusion and the second protrusion are used to abut against the upper limit piece; and / or,

[0012] The lifting mechanism includes an upper buffer assembly, and the upper buffer assembly includes an upper buffer member. The upper buffer member and the first conveying mechanism and the second conveying mechanism are arranged in a manner that is adjustable in height direction; the third protrusion and the fourth protrusion are used to abut the upper buffer member.

[0013] In an optional technical solution, the lifting mechanism further includes a lower limit assembly, the lower limit assembly includes a lower limit piece, the lower limit piece and the first lifting drive assembly and the second lifting drive assembly are arranged in a manner adjustable in the height direction; the first transmission member and the second transmission member are used to abut the lower limit piece; and / or,

[0014] The lifting mechanism also includes a lower buffer assembly, which includes a lower buffer member. The lower buffer member and the first conveying mechanism and the second conveying mechanism are arranged in a manner that is adjustable in height direction; the first transmission member and the second transmission member are used to abut against the lower buffer member.

[0015] In an optional technical solution, the lifting mechanism also includes a first guide roller group and a second guide roller group, the first guide roller group is located above the second guide roller group, the first guide roller group includes two pairs of first guide rollers, one pair of the first guide rollers is distributed upstream and downstream of the conveying direction of the first conveying mechanism, and the other pair of the first guide rollers is distributed upstream and downstream of the conveying direction of the second conveying mechanism; the second guide roller group includes two second guide rollers, and the second guide rollers are respectively arranged directly below each of the first guide rollers.

[0016] In an optional technical solution, the double-layer conveyor line also includes a blocking mechanism, which includes a blocking base, a blocking drive and a blocking member. The blocking base is fixedly connected to the first conveying mechanism and the second conveying mechanism and is located downstream in the conveying direction of the upper conveyor line. The blocking drive is installed on the blocking base, and the power output end of the blocking drive is fixedly connected to the blocking member. The blocking drive is used to drive the blocking member to move between an upper surface above the upper conveyor line and an upper surface below the upper conveyor line.

[0017] In an optional technical solution, the double-layer conveyor line also includes a check mechanism, which includes a check base, a check support and a check piece. The check base is fixedly connected to the first conveying mechanism and the second conveying mechanism and is located upstream in the conveying direction of the upper conveyor line. The check support and the check base are relatively fixedly arranged. The check piece is movably connected to the check base. An elastic piece is provided between the check piece and the check base. An inclined portion is provided on the upper surface of the check piece. The inclined portion is configured to compress the inclined portion and cause the elastic piece to deform when the upper conveyor line conveys the conveyed object.

[0018] In an optional technical solution, the first conveying mechanism includes a first front pulley, a first rear pulley, a first transmission pulley, a first tensioning pulley and a first transmission belt, the first transmission belt passes around the first front pulley, the first rear pulley, the first tensioning pulley and the first transmission pulley in sequence, the first tensioning pulley is rotatably arranged on the first tensioning assembly, the first tensioning assembly is used to drive the first tensioning pulley in a direction that is acute or right angles to the first direction, the first direction is the direction of the line connecting the first transmission pulley and the first rear pulley; the second conveying mechanism includes a second front pulley, a second rear pulley, a second transmission pulley, a second tensioning pulley and a second conveying belt, the second transmission belt passes around the second front pulley, the second rear pulley, the second tensioning pulley and the second transmission pulley in sequence, the second tensioning pulley is rotatably arranged on the second tensioning assembly, the second tensioning assembly is used to drive the second tensioning pulley in a direction that is acute or right angles to the second direction, the second direction is the direction of the line connecting the second transmission pulley and the second rear pulley; the first transmission pulley and the second transmission pulley are both connected to the first transmission shaft and are both connected to the first drive motor.

[0019] In an optional technical solution, the double-layer conveyor line also includes a lower conveyor line, and the lower conveyor line includes a third conveying mechanism and a fourth conveying mechanism; the third conveying mechanism includes a third front belt pulley, a third rear belt pulley, a third transmission belt pulley, a third tensioning belt pulley and a third transmission belt, and the third transmission belt passes around the third front belt pulley, the third rear belt pulley, the third tensioning belt pulley and the third transmission belt pulley in sequence, and the third tensioning belt pulley is rotatably arranged on a third tensioning assembly, and the third tensioning assembly is used to drive the third tensioning belt pulley in a direction that is an acute angle or a right angle to a third direction, and the third direction is the direction between the third transmission belt pulley and the third rear belt pulley Connection direction; the fourth conveying mechanism includes a fourth front pulley, a fourth rear pulley, a fourth transmission pulley, a fourth tensioning pulley and a fourth transmission belt, the fourth transmission belt passes around the fourth front pulley, the fourth rear pulley, the fourth tensioning pulley and the fourth transmission pulley in sequence, the fourth tensioning pulley is rotatably arranged on the fourth tensioning assembly, the fourth tensioning assembly is used to drive the fourth tensioning pulley along a direction that is an acute angle or a right angle to the fourth direction, the fourth direction is the connection direction of the fourth transmission pulley and the fourth rear pulley; the third transmission pulley and the fourth transmission pulley are both connected to the second transmission shaft, and are both connected to the second drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments or background technologies of the present invention, the drawings required for use in the embodiments or background technology descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the present invention, and ordinary technicians in this field can obtain other drawings based on the provided drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a double-layer conveyor line provided in Embodiment 1 of the present utility model;

[0022] Figure 2 A schematic diagram of the structure of a lifting mechanism in a double-layer conveyor line provided in Embodiment 1 of the utility model;

[0023] Figure 3 A schematic structural diagram of the lifting mechanism in the double-layer conveyor line provided in the first embodiment of the utility model viewed from another direction;

[0024] Figure 4 A schematic structural diagram of the lifting mechanism in the double-layer conveyor line provided in the first embodiment of the utility model viewed from another direction;

[0025] Figure 5 A schematic structural diagram of the lifting mechanism in the double-layer conveyor line provided in the first embodiment of the utility model viewed from another direction;

[0026] Figure 6 A schematic diagram of the structure of a lifting mechanism supporting a carrier in a double-layer conveyor line provided in Embodiment 1 of the utility model;

[0027] Figure 7 A schematic diagram of the structure of a blocking mechanism in a double-layer conveyor line provided in Embodiment 1 of the utility model;

[0028] Figure 8 A schematic diagram of the structure of a non-return mechanism in a double-layer conveyor line provided in Embodiment 1 of the utility model;

[0029] Fig. 9 A cross-sectional view of a non-return mechanism in a double-layer conveyor line provided in Embodiment 1 of the utility model;

[0030] Fig.10 A schematic diagram of the structure of an upper conveying line and a lower conveying line in a double-layer conveying line provided in Embodiment 1 of the utility model;

[0031] Fig.11 A structural diagram of the upper conveying line and the lower conveying line in the double-layer conveying line provided in the first embodiment of the utility model omitting a tensioning sliding cover;

[0032] Fig.12This is a schematic structural diagram of the upper conveyor line and the lower conveyor line in the double-layer conveyor line provided in the first embodiment of the utility model, viewed from another direction.

[0033] Description of reference numerals:

[0034] 100-upper conveyor line; 110-first conveying mechanism; 111-first front pulley; 112-first rear pulley; 113-first transmission pulley; 114-first tensioning pulley; 115-first transmission belt; 116-first tensioning assembly; 1161-tensioning slide; 1162-tensioning cover; 1163-tensioning slide; 1164-first tensioning slider; 1165-tensioning end cover; 1166-first tensioning threaded member; 120-second conveying mechanism; 121-second front pulley; 122-second rear pulley; 123-second transmission pulley; 124-second tensioning pulley; 125-second transmission belt; 126-second tensioning assembly; 131-first transmission shaft; 132-first drive motor;

[0035] 200-lifting mechanism; 210-supporting assembly; 211-supporting plate; 212-positioning pin; 220-first lifting transmission assembly; 221-first transmission member; 222-transmission transition member; 223-third transmission member; 225-sliding seat; 226-slide rail; 227-transmission beam; 228-first protrusion; 229-third protrusion; 230-second lifting transmission assembly; 231-second transmission member; 232-fourth transmission member; 233-second protrusion Block; 234-fourth protrusion; 240-first lifting drive assembly; 250-second lifting drive assembly; 260-upper limit assembly; 261-upper mounting piece; 262-upper limit piece; 270-upper buffer assembly; 280-lower limit assembly; 281-lower mounting piece; 282-lower limit piece; 290-lower buffer assembly; 310-first guide roller group; 311-first guide roller; 320-second guide roller group; 321-second guide roller; 322-connecting seat;

[0036] 400-blocking mechanism; 410-blocking base; 420-blocking driving member; 430-blocking member; 440-mounting seat;

[0037] 500- non-return mechanism; 510- non-return base; 520- non-return support; 530- non-return member; 531- inclined portion; 540- elastic member;

[0038] 600-lower conveyor line; 610-third conveying mechanism; 611-third front pulley; 612-third rear pulley; 613-third transmission pulley; 614-third tensioning pulley; 615-third transmission belt; 616-third tensioning assembly; 6161-second tensioning slider; 6162-second tensioning threaded member; 620-fourth conveying mechanism; 621-fourth front pulley; 622-fourth rear pulley; 623-fourth transmission pulley; 624-fourth tensioning pulley; 625-fourth transmission belt; 626-fourth tensioning assembly; 631-second transmission shaft; 632-second drive motor; 910-first mounting plate; 920-second mounting plate; 999-carrier. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0040] Embodiment 1:

[0041] Figure 1 A schematic diagram of the structure of a double-layer conveyor line provided in Embodiment 1 of the present utility model; Figure 6 This is a schematic diagram of the structure of the lifting mechanism supporting the carrier in the double-layer conveyor line provided in the first embodiment of the utility model; Figure 1 and Figure 6 As shown, the double-layer conveyor line provided by the first embodiment of the utility model includes an upper conveyor line 100 and a lifting mechanism 200. The upper conveyor line 100 includes a first conveying mechanism 110 and a second conveying mechanism 120 that are relatively arranged. The lifting mechanism 200 includes a supporting component 210 and two lifting transmission components, namely a first lifting transmission component 220 and a second lifting transmission component 230. The supporting component 210 is fixedly connected to the lifting transmission component and is used to support the conveyed parts. The first lifting transmission component 220 is arranged around the first conveying mechanism 110, and the second lifting transmission component 230 is arranged around the second conveying mechanism 120.

[0042] By setting the first lifting transmission assembly 220 to surround the first conveying mechanism 110 and the second lifting transmission assembly 230 to surround the second conveying mechanism 120, it is achieved that after the first lifting transmission assembly 220 and the second lifting transmission assembly 230 drive the supporting assembly 210 to lift, when the conveyed parts supported by the supporting assembly 210 are operated or processed, the first lifting transmission assembly 220 and the second lifting transmission assembly 230 will not interfere with the upper conveying line 100 to continue to convey other conveyed parts. Moreover, more importantly, since the first lifting transmission assembly 220 is arranged around the first conveying mechanism 110 and the second lifting transmission assembly 230 is arranged around the second conveying mechanism 120, the supporting assembly 210 can be supported at one side close to the first conveying mechanism 110 and one side close to the second conveying mechanism 120, thereby reducing the longitudinal deformation of the supporting assembly 210 and the conveyed parts supported by it in the width direction, so as to improve the assembly accuracy of the supported conveyed parts.

[0043] It should be noted that the width direction of the supporting assembly 210 refers to the horizontal direction perpendicular to the conveying direction. The double-layer conveyor line includes the upper conveyor line 100 mentioned above and the lower conveyor line 600 described later. The upper conveyor line 100 and the lower conveyor line 600 both convey the conveyed objects in the horizontal direction, and the conveying directions may be opposite or the same.

[0044] Specifically, in this embodiment, the first conveying mechanism 110 of the upper conveying line 100 is installed on the first mounting plate 910, and the second conveying mechanism 120 is installed on the second mounting plate 920. The first mounting plate 910 and the second mounting plate 920 are arranged in parallel and the bottoms of the first mounting plate 910 and the second mounting plate 920 are fixedly connected to the base. That is, the first mounting plate 910 and the second mounting plate 920 are distributed along the above-mentioned width direction.

[0045] In this embodiment, the support assembly 210 includes a support plate 211, which is fixedly connected to the power output end of the lifting transmission assembly, and the transported object can be placed on the support plate 211. Specifically, the transported object in this embodiment is the carrier 999, and the carrier 999 can accommodate corresponding products, such as mobile phones. In addition, a positioning pin 212 is also provided on the support plate 211, which can match the positioning hole (not shown in the figure) on the carrier 999 to position the carrier 999.

[0046] Figure 2 A schematic diagram of the structure of a lifting mechanism in a double-layer conveyor line provided in Embodiment 1 of the utility model; Figure 3 This is a schematic diagram of the structure of the lifting mechanism supporting the carrier in the double-layer conveyor line provided in the first embodiment of the utility model; Figure 2-Figure 3As shown, optionally, the jacking mechanism 200 also includes a first jacking drive assembly 240 and a second jacking drive assembly 250; the first jacking transmission assembly 220 includes a first transmission member 221, which is longitudinally fixedly connected to the power output end of the first jacking drive assembly 240, and the first transmission member 221 is also slidably arranged on the outer side surface of the first conveying mechanism 110; the second jacking transmission assembly 230 includes a second transmission member 231, which is longitudinally fixedly connected to the power output end of the second jacking drive assembly 250, and the second transmission member 231 is also slidably arranged on the outer side surface of the second conveying mechanism 120.

[0047] By arranging the first transmission member 221 on the outer side surface of the first conveying mechanism 110 and the second transmission member 231 on the outer side surface of the second conveying mechanism 120, the transmission process of the first lifting drive assembly 240 and the second lifting drive assembly 250 to the supporting assembly 210 can be realized without passing through the space directly below the first conveying mechanism 110 and the second conveying mechanism 120, thereby not hindering the upper conveying line 100 from conveying the conveyed objects.

[0048] Specifically, in this embodiment, the first lifting drive assembly 240 and the second lifting drive assembly 250 both include a first cylinder, which is respectively disposed on the outer side of the first mounting plate 910 and the second mounting plate 920, that is, the side facing away from each other. The first cylinder is disposed in a manner of extending vertically upward.

[0049] Specifically, the first transmission member 221 and the second transmission member 231 are both plate-like parts, and the thickness of the plate-like parts is in the horizontal direction. The first transmission member 221 and the second transmission member 231 are both roughly rectangular with a rectangular opening at the bottom. Among them, the top of the first cylinder is connected to a transmission transition member 222, and the bottom of the transmission transition member 222 is provided with a vertical threaded hole, which is connected to the external thread of the end of the piston rod. The transmission transition member 222 is a structure with flange parts at both ends, and correspondingly, the area between the two flange parts is an annular groove. An inverted convex notch is provided in the middle of the top of the rectangular opening of the first transmission member 221 and the second transmission member 231, and the convex notch matches the flange part located at the top, and the opening of the inverted convex notch matches the groove between the two flange parts. As for the plate thickness direction on the first transmission member 221 and the second transmission member 231, the first transmission member 221 can move relative to or even separate from the power output end of the first jacking drive assembly 240, and the second transmission member 231 can move relative to or even separate from the power output end of the second jacking drive assembly 250. By adopting the above structure, the first transmission member 221 can be longitudinally fixedly connected to the power output end of the first jacking assembly, and the second transmission member 231 can be longitudinally fixedly connected to the power output end of the second jacking drive assembly 250.

[0050] In addition, the first transmission member 221 is provided with a slide seat 225 on a side thereof facing the first mounting plate 910, and correspondingly, a slide rail 226 is provided on the outer side of the first mounting plate 910. Thus, the relative sliding setting of the first transmission member 221 and the first transmission mechanism is realized. More specifically, the relative sliding direction of the first transmission member 221 and the first mounting plate 910 is a vertical direction, that is, the length direction of the slide rail 226 is a vertical direction. Similarly, the second transmission member 231 is provided with a slide seat 225 on a side thereof facing the second mounting plate 920, and correspondingly, a slide rail 226 is provided on the outer side of the second mounting plate 920. Thus, the relative sliding setting of the second transmission member 231 and the second transmission mechanism is realized. More specifically, the relative sliding direction of the second transmission member 231 and the second mounting plate 920 is a vertical direction, that is, the length direction of the slide rail 226 is a vertical direction.

[0051] like Figure 2-Figure 3 As shown, optionally, the first lifting transmission assembly 220 also includes a third transmission member 223, which is fixedly connected to the supporting assembly 210 and fixedly arranged relative to the first transmission member 221, and the third transmission member 223 is located on the downstream and upstream sides of the first conveying mechanism 110 along the conveying direction; the second lifting transmission assembly 230 also includes a fourth transmission member 232, which is fixedly connected to the supporting assembly 210 and fixedly arranged relative to the second transmission member 231, and the fourth transmission member 232 is located on the downstream and upstream sides of the second conveying mechanism 120 along the conveying direction.

[0052] By arranging the third transmission member 223 at the downstream side and the upstream side of the first conveying mechanism 110 along the conveying direction, and arranging the fourth transmission member 232 at the downstream side and the upstream side of the second conveying mechanism 120 along the conveying direction, the force driving the first transmission member 221 and the second transmission member 231 to rise and fall can be transmitted to the supporting assembly 210, and the force transmission process is located at the upstream side and the downstream side of the first conveying mechanism 110 and the second conveying mechanism 120 along the conveying direction. When the lifting mechanism 200 lifts the conveyed parts, the third transmission member 223 and the fourth transmission member 232 can be located above the running space of the conveyed parts conveyed by the first conveying mechanism 110 and the second conveying mechanism 120, and will not interfere with the first conveying mechanism 110 and the second conveying mechanism 120 continuing to convey the conveyed parts at this time.

[0053] A transmission crossbeam 227 is fixedly connected to the top of the first transmission member 221 and the top of the second transmission member 231, respectively, and the transmission crossbeam 227 is in a gate shape on the horizontal plane. The gate-shaped crossbeam is fixedly connected to the top of the first transmission member 221 or the top of the second transmission member 231; the free ends of the two arms of the gate shape are connected to the third transmission member 223 and the fourth transmission member 232, respectively. The third transmission member 223 and the fourth transmission member 232 are both in an L shape on the horizontal plane, one arm of the L shape is adjustably fixedly connected to the gate-shaped arm of the transmission crossbeam 227, and one arm of the L shape is fixedly connected to the supporting plate 211. Among them, waist-shaped holes extending along the width direction of the supporting assembly 210 are set on the third transmission member 223 and the fourth transmission member 232 as adjustment holes to adjust the relative positions of the third transmission member 223 and the fourth transmission member 232 and the transmission beam 227, so as to match the width of the supporting plate 211 when the width of the conveyed member is different and the width of the supporting plate 211 is different.

[0054] Figure 4 A schematic structural diagram of the lifting mechanism in the double-layer conveyor line provided in the first embodiment of the utility model viewed from another direction; Figure 5 This is a schematic structural diagram of the lifting mechanism in the double-layer conveyor line provided in the first embodiment of the utility model, viewed from another direction; Figure 4 and Figure 5 As shown, optionally, a first protrusion 228 and a third protrusion 229 are fixedly provided on the first transmission member 221, and a second protrusion 233 and a fourth protrusion 234 are fixedly provided on the second transmission member 231;

[0055] The lifting mechanism 200 further includes an upper limit assembly 260, which includes an upper limit member 262, and the upper limit member 262 and the first conveying mechanism 110 and the second conveying mechanism 120 are arranged in a manner that is adjustable in height direction; the first protrusion 228 and the second protrusion 233 are used to abut against the upper limit member 262; and / or,

[0056] The lifting mechanism 200 includes an upper buffer assembly 270, which includes an upper buffer member. The upper buffer member and the first conveying mechanism 110 and the second conveying mechanism 120 are arranged in a manner that is adjustable in height direction; the third protrusion 229 and the fourth protrusion 234 are used to abut the upper buffer member.

[0057] By fixing the first protrusion 228 on the first transmission member 221 and the second protrusion 233 on the second transmission member 231, the first protrusion 228 and the second protrusion 233 can be used to abut against the upper limit member 262 respectively, so as to achieve rigid limit of the highest rising position of the lifting mechanism 200, so as to ensure the rising position of the conveyed object. Moreover, the upper limit member 262 and the first conveying mechanism 110 and the second conveying mechanism 120 are arranged in a height-adjustable manner, so that when the position of the conveyed object to be processed changes, it can be matched with the processing position of the conveyed object in time.

[0058] By fixing the third protrusion 229 on the first transmission member 221 and the fourth protrusion 234 on the second transmission member 231, the third protrusion 229 and the fourth protrusion 234 can be used to abut against the upper buffer respectively, so as to buffer the speed of the first lifting transmission assembly 220 and the second lifting transmission assembly 230 before the first protrusion 228 and the second protrusion 233 contact the upper limit member 262, so as to reduce the impact on the upper limit member 262 and extend the service life of the upper limit member 262. The upper buffer is arranged in a height-adjustable manner with the first conveying mechanism 110 and the second conveying mechanism 120, so as to match the processing position of the conveyed member in time when the position of the conveyed member to be processed changes.

[0059] Specifically, the upper limit member 262 and the upper buffer member are both mounted on the upper mounting member 261, and the upper mounting member 261 can be an L-shaped bent plate. Further, a threaded hole is provided at the top of the upper mounting member 261, and the upper limit member 262 and the upper buffer member both have external threaded portions, which are threadedly connected to the threaded hole. Further, nuts can be provided on the external threaded portions of the two to lock the two with the upper mounting member 261 after the two are adjusted. The upper limit member 262 can be a male threaded connector such as a screw or a bolt, more specifically a screw. The upper buffer member can be a hydraulic buffer.

[0060] like Figure 2 and Figure 3 As shown, optionally, the lifting mechanism 200 further includes a lower limit assembly 280, the lower limit assembly 280 includes a lower limit member 282, and the lower limit member 282 and the first lifting drive assembly 240 and the second lifting drive assembly 250 are arranged in a manner adjustable in the height direction; the first transmission member 221 and the second transmission member 231 are used to abut the lower limit member 282; and / or,

[0061] The lifting mechanism 200 further includes a lower buffer assembly 290, which includes a lower buffer member, which is arranged with the first conveying mechanism 110 and the second conveying mechanism 120 in a manner adjustable in height direction; the first transmission member 221 and the second transmission member 231 are used to abut the lower buffer member.

[0062] The first transmission member 221 and the second transmission member 231 are respectively in contact with the lower limit member 282 to achieve rigid limit of the lowest descending position of the lifting mechanism 200, so as to ensure the lowest position of the supporting assembly 210. Moreover, the lower limit member 282 and the first conveying mechanism 110 and the second conveying mechanism 120 are arranged in a height-adjustable manner, so that when the first lifting transmission assembly 220 and the second lifting transmission assembly 230 are changed, they can be matched with the lifting position of the conveyed object in time.

[0063] By providing the lower buffer assembly 290, the speed of the first transmission member 221 and the second transmission member 231 can be buffered before the first transmission member 221 and the second transmission member 231 contact the lower stop member 282, so as to reduce the impact on the lower stop member 282 and extend the service life of the lower stop member 282. By providing the lower buffer member and the first conveying mechanism 110 and the second conveying mechanism 120 in a height-adjustable manner, the kinetic energy of the movement of the first transmission member 221 and the second transmission member 231 can be effectively buffered when the running speeds of the first transmission member 221 and the second transmission member 231 change.

[0064] Specifically, the lower limit member 282 and the lower buffer member are both mounted on the lower mounting member 281. The lower mounting member 281 can be a plate-like part with a hole in the middle. The middle hole of the plate-like part can accommodate the piston rod of the first cylinder to pass through. The lower mounting member 281 is fixedly connected to the first cylinder. Further, a threaded hole is provided on the top of the lower mounting member 281, and the two threaded holes are respectively located on both sides of the piston rod of the first cylinder. The lower limit member 282 and the lower buffer member both have external threaded parts, which are threadedly connected to the threaded holes. Further, nuts can be provided under the external threaded parts of the two to lock the two with the lower mounting member 281 after the two are adjusted. The lower limit member 282 can be a male threaded connector such as a screw or a bolt, and more specifically a screw. The lower buffer member can be a hydraulic buffer.

[0065] like Figure 2-Figure 5 As shown, optionally, the lifting mechanism 200 also includes a first guide roller group 310 and a second guide roller group 320, the first guide roller group 310 is located above the second guide roller group 320, the first guide roller group 310 includes two pairs of first guide rollers 311, one pair of first guide rollers 311 are distributed upstream and downstream of the conveying direction of the first conveying mechanism 110, and the other pair of first guide rollers 311 are distributed upstream and downstream of the conveying direction of the second conveying mechanism 120; the second guide roller group 320 includes two second guide rollers 321, and the second guide rollers 321 are respectively arranged directly below each first guide roller 311.

[0066] By arranging the first guide roller group 310 and the second guide roller group 320 in an upper and lower arrangement, and making the first guide roller group 310 and the second guide roller group 320 respectively located downstream and upstream of the conveying direction of the first conveying mechanism 110 and the second conveying mechanism 120, when the jacking mechanism 200 lifts the conveyed object, the second guide roller group 320 below can be used to be flush with the first conveying mechanism 110 and the second conveying mechanism 120 to make up the gap between the double-layer conveying line and the upstream and downstream belt lines; and when the jacking mechanism 200 descends to the lowest point, the first guide roller group 310 above can be used to be flush with the first conveying mechanism 110 and the second conveying mechanism 120 to make up the gap between the double-layer conveying line and the upstream and downstream belt lines.

[0067] Among them, in this embodiment, the first guide roller 311 can be rotatably installed on an L-shaped bent rod, the upper part of the L-shaped bent rod is horizontally arranged, and the lower part of the L-shaped bent rod is connected to the end of the upper surface of the transmission beam 227; and each second guide roller 321 is rotatably installed on a connecting seat 322, and the connecting seat 322 is fixedly installed on another L-shaped bent rod, and the upper part of the L-shaped bent rod is also horizontally arranged and fixedly connected to the end of the lower surface of the transmission beam 227.

[0068] Figure 7 The schematic diagram of the structure of the blocking mechanism in the double-layer conveyor line provided in the first embodiment of the utility model; Figure 1 and Figure 7 As shown, optionally, the double-layer conveyor line also includes a blocking mechanism 400, which includes a blocking base 410, a blocking drive 420 and a blocking member 430. The blocking base 410 is fixedly connected to the first conveying mechanism 110 and the second conveying mechanism 120 and is located downstream in the conveying direction of the upper conveyor line 100. The blocking drive 420 is installed on the blocking base 410, and the power output end of the blocking drive 420 is fixedly connected to the blocking member 430. The blocking drive 420 is used to drive the blocking member 430 to move between an upper surface higher than the upper conveyor line 100 and an upper surface lower than the upper conveyor line 100.

[0069] By setting the blocking mechanism 400, the blocking member 430 can be driven by the blocking driving member 420 to move to a position higher than the upper surface of the upper conveyor line 100 to prevent the conveyed object from being further conveyed by the upper conveyor line 100, or the blocking driving member 420 can be used to drive the blocking member 430 to move to a position lower than the upper surface of the upper conveyor line 100 to allow the conveyed object to be conveyed by the upper conveyor line 100. This makes it easier to determine the stop position of the conveyed object, so that the lifting mechanism 200 can lift the conveyed object to perform corresponding operations.

[0070] The blocking base 410 may be a rectangular plate, and the two ends of the rectangular plate are respectively fixedly connected to the sides of the first mounting plate 910 and the second mounting plate 920. The blocking driving member 420 may be a second cylinder extending vertically upward, and the second cylinder is connected to the blocking base 410 through a mounting seat 440, and the mounting seat 440 may be an L-shaped bent plate, and one of the vertical plates of the L-shaped bent plate is fixedly mounted with the second cylinder, and the other vertical plate of the L-shaped bent plate is provided with a waist-shaped hole with a length direction in the vertical direction, and a male threaded connector such as a screw or a bolt passes through the waist-shaped hole, and the male threaded connector can be connected with the threaded hole on the blocking base 410. If the position of the blocking driving member 420 needs to be adjusted, the male threaded connector can be loosened to facilitate the relative movement of the male threaded connector in the waist-shaped hole, and after being adjusted in place, the male threaded connector is fastened to the blocking base 410.

[0071] Figure 8 A schematic diagram of the structure of a non-return mechanism in a double-layer conveyor line provided in Embodiment 1 of the utility model; Fig. 9 A cross-sectional view of a non-return mechanism in a double-layer conveyor line provided in Embodiment 1 of the utility model; Figure 1 and Figure 8 , Fig. 9 As shown, optionally, the double-layer conveyor line also includes a check mechanism 500, the check mechanism 500 includes a check base 510, a check support 520 and a check piece 530, the check base 510 is fixedly connected to the first conveying mechanism 110 and the second conveying mechanism 120 and is located upstream in the conveying direction of the upper conveyor line 100, the check support 520 and the check base 510 are relatively fixedly arranged, the check piece 530 is movably connected to the check base 510, an elastic member 540 is provided between the check piece 530 and the check base 510, and an inclined portion 531 is provided on the upper surface of the check piece 530, and the inclined portion 531 is configured to compress the inclined portion 531 and deform the elastic member 540 when the upper conveyor line 100 conveys the conveyed object.

[0072] By fixing a check support 520 on the check base 510 to install the check piece 530, and setting an elastic member 540 between the check piece 530 and the check support 520, when the elastic member 540 releases the elastic potential energy, the check piece 530 can be partially higher than the upper surface of the upper conveyor line 100, so that the conveyed parts on the upper conveyor line 100 can move in the opposite direction of the conveying direction.

[0073] The non-return base 510 may be a rectangular plate, and the two ends of the rectangular plate are respectively fixedly connected to the sides of the first mounting upright plate 910 and the second mounting upright plate 920. The non-return support 520 may include an L-shaped bent plate and a support body with a mounting flange at the bottom. The upright plate portion of the L-shaped bent plate is connected to the non-return base 510 in an adjustable manner. Specifically, the upright plate portion of the L-shaped bent plate is provided with a waist-shaped hole with a length direction in the vertical direction. A male threaded connector such as a screw or a bolt passes through the waist-shaped hole. The male threaded connector can be connected to the threaded hole on the non-return base 510. If the height of the non-return base 510 and the non-return member 530 needs to be adjusted, the male threaded connector can be loosened to facilitate the relative movement of the male threaded connector in the waist-shaped hole. After being adjusted in place, the male threaded connector is fastened to the non-return base 510.

[0074] In this embodiment, the stopper 530 can be rotatably connected to the top of the support body, and an elastic member 540 is provided below the stopper 530 at a position deviating from the rotation axis of the stopper 530. In this embodiment, the elastic member 540 can be a cylindrical helical compression spring, and a downwardly recessed countersunk hole is provided at the top of the support body to accommodate a part of the elastic member 540. When the conveyed object is conveyed by the upper conveying line 100, the conveyed object can press the inclined portion 531 of the stopper 530, and the elastic member 540 is compressed by the stopper 530, so that the height of the upper surface of the stopper 530 is reduced to allow the conveyed object to pass. When the rear end of the conveyed object, that is, the end of the conveyed object located on the upstream side of the conveying direction, passes through, the elastic potential energy of the elastic member 540 is released to lift the stopper 530, thereby preventing the conveyed object from returning.

[0075] In another implementation, if the stopper 530 is still rotatably connected to the support body, a torsion spring can be selected as the elastic member 540, which can also play a similar role as the above structure. Alternatively, the stopper 530 can be slidably arranged on the top of the support body, and similarly, a cylindrical helical compression spring can be used as the elastic member 540.

[0076] Fig.10 A schematic diagram of the structure of an upper conveying line and a lower conveying line in a double-layer conveying line provided in Embodiment 1 of the utility model; Fig.11 A structural diagram of the upper conveying line and the lower conveying line in the double-layer conveying line provided in the first embodiment of the utility model omitting a tensioning sliding cover; Fig.12 This is a schematic diagram of the structure of the upper conveyor line and the lower conveyor line in the double-layer conveyor line provided in the first embodiment of the utility model as viewed from another direction; Figure 10-12As shown, optionally, the first conveying mechanism 110 includes a first front pulley 111, a first rear pulley 112, a first transmission pulley 113, a first tension pulley 114 and a first transmission belt 115, the first transmission belt 115 passes around the first front pulley 111, the first rear pulley 112, the first tension pulley 114 and the first transmission pulley 113 in sequence, the first tension pulley 114 is rotatably arranged on a first tensioning assembly 116, and the first tensioning assembly 116 is used to drive the first tensioning pulley 114 in a direction that is an acute angle or a right angle to the first direction, and the first direction is the connecting direction of the first transmission pulley 113 and the first rear pulley 112; the second conveying mechanism 120 includes a second front pulley 121, The second rear pulley 122, the second transmission pulley 123, the second tensioning pulley 124 and the second transmission belt 125, the second transmission belt 125 passes around the second front pulley 121, the second rear pulley 122, the second tensioning pulley 124 and the second transmission pulley 123 in sequence, the second tensioning pulley 124 is rotatably arranged on the second tensioning assembly 126, the second tensioning assembly 126 is used to drive the second tensioning pulley 124 in a direction that is acute or right angles to the second direction, the second direction is the direction of the line connecting the second transmission pulley 123 and the second rear pulley 122; the first transmission pulley 113 and the second transmission pulley 123 are both connected to the first transmission shaft 131, and are both connected to the first drive motor 132.

[0077] By arranging the first transmission pulley 113 and the second transmission pulley 123 to be connected to the first transmission shaft 131 and both connected to the first driving motor 132, the first conveying mechanism 110 and the second conveying mechanism 120 can be operated synchronously. The first tensioning assembly 116 is arranged to drive the first tensioning wheel in a direction that is an acute angle or a right angle to the first direction, so that the first transmission belt 115 between the first transmission pulley 113 and the first rear pulley 112 can be tensioned, thereby tensioning the first conveying belt of the first conveying mechanism 110, so as to ensure that there is enough tension on the first conveying belt between the first front pulley 111 and the first rear pulley 112 to support the weight of the conveyed object, thereby ensuring the accurate position of the conveyed object. The second tensioning assembly 126 is arranged to drive the second tensioning wheel in a direction which is an acute angle or a right angle to the second direction, so that the second transmission belt 125 between the second transmission pulley 123 and the second rear pulley 122 can be tensioned, thereby tensioning the second conveyor belt of the second conveying mechanism 120, so as to ensure that there is sufficient tension on the second conveyor belt between the second front pulley 121 and the second rear pulley 122 to support the weight of the conveyed object, thereby ensuring the accurate position of the conveyed object.

[0078] Specifically, in this embodiment, the first tensioning assembly 116 and the second tensioning assembly 126 have the same structure and are symmetrically arranged, so only the first tensioning assembly 116 is specifically described, and the second tensioning assembly 126 is not described in detail. The first tensioning assembly 116 includes a tensioning slide 1161 and a tensioning cover 1162. The tensioning slide 1161 is fixedly installed on the first mounting vertical plate 910, and the tensioning slide cover is fixedly installed on the tensioning slide 1161. A tensioning slide 1163 is provided on the tensioning slide 1161, and the extension direction of the tensioning slide 1163 is an acute angle or a right angle with the first direction. The first tensioning slider 1164 is slidably arranged between the tensioning slide 1161 and the tensioning slide cover. The first tensioning slider 1164 has a protruding portion protruding toward the bottom of the tensioning slide 1163. The protruding portion matches the tensioning slide 1163, and the first tensioning slider 1164 can be positioned in a direction perpendicular to the extension direction of the tensioning slide 1163. The first tensioning slider 1164 also has an extended arm, and the free end of the extended arm is rotatably mounted with a first tensioning wheel. The tensioning slider 1161 is also fixedly connected with a tensioning end cover 1165, and the tensioning end cover 1165 is provided with a through hole for passing the first tensioning screw 1166, and the first tensioning screw 1166 is also spirally connected with the first tensioning slider 1164. When the first tensioning screw 1166 is rotated, the first tensioning screw 1166 and the threaded hole of the first tensioning slider 1164 rotate relative to each other, and the rotation of the first tensioning screw 1166 is converted into the sliding of the first tensioning slider 1164.

[0079] like Figure 10-12As shown, optionally, the double-layer conveyor line also includes a lower conveyor line 600, and the lower conveyor line 600 includes a third conveying mechanism 610 and a fourth conveying mechanism 620; the third conveying mechanism 610 includes a third front pulley 611, a third rear pulley 612, a third transmission pulley 613, a third tensioning pulley 614 and a third transmission belt 615, and the third transmission belt 615 sequentially passes around the third front pulley 611, the third rear pulley 612, the third tensioning pulley 614 and the third transmission pulley 613, and the third tensioning pulley 614 is rotatably arranged on a third tensioning assembly 616, and the third tensioning assembly 616 is used to drive the third tensioning pulley 614 in a direction that is acute or right angles to the third direction, and the third direction is the connection between the third transmission pulley 613 and the third rear pulley 612. Line direction; the fourth conveying mechanism 620 includes a fourth front pulley 621, a fourth rear pulley 622, a fourth transmission pulley 623, a fourth tensioning pulley 624 and a fourth transmission belt 625, the fourth transmission belt 625 passes around the fourth front pulley 621, the fourth rear pulley 622, the fourth tensioning pulley 624 and the fourth transmission pulley 623 in sequence, the fourth tensioning pulley 624 is rotatably arranged on the fourth tensioning assembly 626, the fourth tensioning assembly 626 is used to drive the fourth tensioning pulley 624 in a direction that is an acute angle or a right angle to the fourth direction, the fourth direction is the direction of the line connecting the fourth transmission pulley 623 and the fourth rear pulley 622; the third transmission pulley 613 and the fourth transmission pulley 623 are both connected to the second transmission shaft 631, and are both connected to the second drive motor 632.

[0080] By arranging the third transmission pulley 613 and the fourth transmission pulley 623 to be connected to the third transmission shaft and both connected to the third driving motor, the synchronous operation of the third conveying mechanism 610 and the fourth conveying mechanism 620 can be realized. The third tensioning assembly 616 is arranged to drive the third tensioning wheel in a direction that is an acute angle or a right angle to the third direction, so that the third transmission belt 615 between the third transmission pulley 613 and the third rear pulley 612 can be tensioned, thereby tensioning the third conveying belt of the third conveying mechanism 610, so as to ensure that there is enough tension on the third conveying belt between the third front pulley 611 and the third rear pulley 612 to support the weight of the conveyed object, thereby ensuring the accurate position of the conveyed object. The fourth tensioning assembly 626 is arranged to drive the fourth tensioning wheel in a direction which is an acute angle or a right angle to the fourth direction, so that the fourth transmission belt 625 between the fourth transmission pulley 623 and the fourth rear pulley 622 can be tensioned, thereby tensioning the fourth conveyor belt of the fourth conveying mechanism 620, so as to ensure that there is sufficient tension on the fourth conveyor belt between the fourth front pulley 621 and the fourth rear pulley 622 to support the weight of the conveyed object, thereby ensuring the accurate position of the conveyed object.

[0081] Among them, in this embodiment, the third tensioning assembly 616 and the fourth tensioning assembly 626 have the same structure, so only the third tensioning assembly 616 is introduced, and the technicians in the relevant technical field can obtain the relevant specific structure of the fourth tensioning assembly 626 according to the introduction of the third tensioning assembly 616. Specifically, the third tensioning assembly 616 includes a second tensioning slider 6161, and the second tensioning slider 6161 is rotatably connected to the third tensioning pulley 614 through a tensioning wheel shaft (not shown in the figure), and a waist-shaped through hole whose length direction is consistent with the tensioning direction of the third tensioning assembly 616 is provided on the first mounting vertical plate 910, and a male threaded connector such as a screw or a bolt is also provided on the second tensioning slider 6161, and a waist-shaped through hole consistent with the tensioning direction of the third tensioning assembly 616 is also provided on the second tensioning slider 6161, and the male threaded connector passes through the waist-shaped through hole on the second tensioning slider 6161 to be threadedly connected with the threaded hole on the first mounting vertical plate 910. If the position of the third tensioning assembly 616 needs to be adjusted, the male threaded connector is loosened so that the male threaded connector can move relative to the waist-shaped through hole of the second tensioning slider 6161, and the tensioning wheel shaft moves relative to the waist-shaped through hole on the first mounting vertical plate 910. In addition, the third tensioning assembly 616 also includes a second tensioning screw 6162, which is connected to the threaded hole of the first mounting vertical plate 910. The threaded hole is perpendicular to the plate thickness direction of the first mounting vertical plate 910 and is consistent with the tensioning direction of the third tensioning assembly 616. The end of the second tensioning screw 6162 can abut against the tensioning wheel shaft. If the thread on the second tensioning screw 6162 is a right-hand thread, when viewed from the thread head of the second tensioning screw 6162 to the tensioning wheel shaft, the second tensioning screw 6162 is rotated clockwise to push the tensioning wheel shaft and the second tensioning slider 6161 to move, so that the third tensioning pulley 614 tensions the third conveyor belt.

[0082] In addition, sensors for detecting the conveyed objects are provided on the upper surfaces of the upper conveyor line 100 and the lower conveyor line 600, respectively, at the upstream end and the downstream end of the conveyor line. For example, a through-beam photoelectric sensor can be selected. When the conveyed object is conveyed between the signal emitting part and the signal receiving part of the through-beam photoelectric sensor, the transmission of the signal is blocked, and the through-beam photoelectric sensor can sense that the conveyed object has moved to this position.

[0083] The operating principle of this embodiment is:

[0084] The operating principle of the upper conveyor line 100 is as follows:

[0085] Place the carrier 999, which is a transported part, into the production line;

[0086] For a conveyed part that needs to be operated on the double-layer conveyor line, when the conveyed part moves to the upstream of the entry position of the upper conveyor line 100, a pair of first guide rails located upstream in the conveying direction support the conveyed part, and then the front end of the conveyed part contacts the inclined portion 531 of the check member 530, compressing the elastic member 540 below the check member 530, and the check member 530 is pressed down. Therefore, the conveyed part passes over the check member 530 and contacts the first conveyor belt and the second conveyor belt of the upper conveyor line 100. Then, when the conveyed part continues to run and is detected by the sensor upstream of the upper conveyor line 100, the second cylinder can be controlled to extend, driving the blocking member 430 to be higher than the upper surface of the upper conveyor line 100. The front end of the conveyed part encounters the blocking member 430 and cannot continue to move downstream.

[0087] At the same time, the front end of the conveyed part is also detected by the sensor downstream of the conveying direction of the upper conveyor line 100, and the first cylinder can be controlled to extend, and the first cylinder extends to push the first transmission member 221 and the second transmission member 231 to move upward, and respectively drive the third transmission member 223 and the fourth transmission member 232 to move upward until the supporting assembly 210 contacts the conveyed part, and then drives the conveyed part to move upward. In the process of moving upward, the third protrusion 229 and the fourth protrusion 234 abut the upper buffer, so that the speed of the first lifting transmission assembly 220 and the second lifting transmission assembly 230, as well as the supporting assembly 210 and the conveyed part is reduced. When the first protrusion 228 and the second protrusion 233 abut the upper limit member 262, the rise of the conveyed part stops. Related equipment can operate the conveyed part. Specifically in this embodiment, the carrier 999 can be operated to load products.

[0088] After the operation is completed, the first cylinder and the second cylinder retract to drive the first transmission member 221 and the second transmission member 231 to move downward, and respectively drive the third transmission member 223 and the fourth transmission member 232 to move downward, until the supporting assembly 210 is separated from the conveyed member, and the conveyed member is placed on the first conveyor belt and the second conveyor belt of the first conveying mechanism 110 and the second conveying mechanism 120. In the process of moving downward, the first transmission member 221 and the second transmission member 231 abut the lower buffer member, so that the speed of the first lifting transmission assembly 220 and the second lifting transmission assembly 230, as well as the supporting assembly 210 and the conveyed member is reduced. When the first transmission member 221 and the second transmission member 231 abut the lower limit member 282, the descent of the conveyed member stops. The second cylinder can be retracted to remove the obstruction to the conveying of the conveyed member.

[0089] The conveyed parts are continuously conveyed to the equipment further downstream along with the operation of the upper conveying line 100 .

[0090] In addition, when the upper conveyor line 100 is running, the lower conveyor line 600 can also carry out conveying in the opposite direction to the upper conveyor line 100, which is beneficial to improve space utilization.

[0091] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

[0092] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0093] In the above embodiments, the descriptions of directions such as “upper” and “lower” are all based on the drawings.

[0094] The above description of the disclosed embodiments enables professionals in the field to implement or use the utility model. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model.

[0095] Therefore, the present invention will not be limited to the embodiments shown herein but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-layer conveyor line, characterized in that: The invention comprises an upper conveying line (100) and a lifting mechanism (200), wherein the upper conveying line (100) comprises a first conveying mechanism (110) and a second conveying mechanism (120) which are arranged opposite to each other, and the lifting mechanism (200) comprises a supporting component (210) and two lifting transmission components, namely a first lifting transmission component (220) and a second lifting transmission component (230), wherein the supporting component (210) is fixedly connected to the lifting transmission component and is used for supporting the conveyed object, and the first lifting transmission component (220) is arranged around the first conveying mechanism (110), and the second lifting transmission component (230) is arranged around the second conveying mechanism (120).

2. The double-layer conveyor line according to claim 1, characterized in that: The lifting mechanism (200) also includes a first lifting drive assembly (240) and a second lifting drive assembly (250); the first lifting transmission assembly (220) includes a first transmission member (221), the first transmission member (221) is longitudinally fixedly connected to the power output end of the first lifting drive assembly (240), and the first transmission member (221) is also slidably arranged on the outer side surface of the first conveying mechanism (110); the second lifting transmission assembly (230) includes a second transmission member (231), the second transmission member (231) is longitudinally fixedly connected to the power output end of the second lifting drive assembly (250), and the second transmission member (231) is also slidably arranged on the outer side surface of the second conveying mechanism (120).

3. The double-layer conveyor line according to claim 2, characterized in that: The first lifting transmission assembly (220) also includes a third transmission member (223), which is fixedly connected to the supporting assembly (210) and fixedly arranged relative to the first transmission member (221), and the third transmission member (223) is located on the downstream side and the upstream side of the first conveying mechanism (110) along the conveying direction; the second lifting transmission assembly (230) also includes a fourth transmission member (232), which is fixedly connected to the supporting assembly (210) and fixedly arranged relative to the second transmission member (231), and the fourth transmission member (232) is located on the downstream side and the upstream side of the second conveying mechanism (120) along the conveying direction.

4. The double-layer conveyor line according to claim 2, characterized in that: The first transmission member (221) is fixedly provided with a first convex block (228) and a third convex block (229), and the second transmission member (231) is fixedly provided with a second convex block (233) and a fourth convex block (234); The lifting mechanism (200) further comprises an upper limit assembly (260), wherein the upper limit assembly (260) comprises an upper limit member (262), wherein the upper limit member (262) and the first conveying mechanism (110) and the second conveying mechanism (120) are arranged in a manner adjustable in height direction; the first protrusion (228) and the second protrusion (233) are used to abut against the upper limit member (262); and / or The lifting mechanism (200) includes an upper buffer assembly (270), and the upper buffer assembly (270) includes an upper buffer member, and the upper buffer member and the first conveying mechanism (110) and the second conveying mechanism (120) are arranged in a manner that can be adjusted in the height direction; the third protrusion (229) and the fourth protrusion (234) are used to abut the upper buffer member.

5. The double-layer conveyor line according to claim 2, characterized in that: The lifting mechanism (200) further comprises a lower limit assembly (280), wherein the lower limit assembly (280) comprises a lower limit member (282), wherein the lower limit member (282) and the first lifting drive assembly (240) and the second lifting drive assembly (250) are arranged in a manner adjustable in height direction; the first transmission member (221) and the second transmission member (231) are used to abut against the lower limit member (282); and / or, The lifting mechanism (200) further includes a lower buffer assembly (290), wherein the lower buffer assembly (290) includes a lower buffer member, and the lower buffer member and the first conveying mechanism (110) and the second conveying mechanism (120) are arranged in a manner adjustable in the height direction; the first transmission member (221) and the second transmission member (231) are used to abut the lower buffer member.

6. The double-layer conveyor line according to claim 2, characterized in that: The lifting mechanism (200) also includes a first guide roller group (310) and a second guide roller group (320), wherein the first guide roller group (310) is located above the second guide roller group (320), and the first guide roller group (310) includes two pairs of first guide rollers (311), one pair of the first guide rollers (311) is distributed upstream and downstream of the conveying direction of the first conveying mechanism (110), and the other pair of the first guide rollers (311) is distributed upstream and downstream of the conveying direction of the second conveying mechanism (120); the second guide roller group (320) includes two second guide rollers (321), and the second guide rollers (321) are respectively arranged directly below each of the first guide rollers (311).

7. The double-layer conveyor line according to any one of claims 1 to 6, characterized in that: The double-layer conveyor line further comprises a blocking mechanism (400), the blocking mechanism (400) comprising a blocking base (410), a blocking driving member (420) and a blocking member (430), the blocking base (410) being fixedly connected to the first conveying mechanism (110) and the second conveying mechanism (120) and being located downstream in the conveying direction of the upper conveyor line (100), the blocking driving member (420) being installed on the blocking base (410), the power output end of the blocking driving member (420) being fixedly connected to the blocking member (430), and the blocking driving member (420) being used to drive the blocking member (430) to move between an upper surface higher than the upper conveyor line (100) and an upper surface lower than the upper conveyor line (100).

8. The double-layer conveyor line according to any one of claims 1 to 6, characterized in that: The double-layer conveyor line also includes a non-return mechanism (500), the non-return mechanism (500) includes a non-return base (510), a non-return support (520) and a non-return member (530), the non-return base (510) is fixedly connected to the first conveyor mechanism (110) and the second conveyor mechanism (120) and is located upstream in the conveying direction of the upper conveyor line (100), the non-return support (520) is fixedly connected to the non-return base (510) and the non-return member (530) The non-return member (530) is movably connected to the non-return base (510), an elastic member (540) is provided between the non-return member (530) and the non-return base (510), and an inclined portion (531) is provided on the upper surface of the non-return member (530), and the inclined portion (531) is configured to compress the inclined portion (531) and deform the elastic member (540) when the upper conveyor line (100) conveys the conveyed object.

9. The double-layer conveyor line according to any one of claims 1 to 6, characterized in that: The first conveying mechanism (110) comprises a first front pulley (111), a first rear pulley (112), a first transmission pulley (113), a first tension pulley (114) and a first transmission belt (115); the first transmission belt (115) passes around the first front pulley (111), the first rear pulley (112), the first tension pulley (114) and the first transmission pulley (113) in sequence; the first tension pulley (114) is rotatably arranged on a first tensioning assembly (116); the first tensioning assembly (116) is used to drive the first tensioning pulley (114) in a direction that is an acute angle or a right angle to a first direction; the first direction is a connecting direction of the first transmission pulley (113) and the first rear pulley (112); the second conveying mechanism (120) comprises a second front pulley (121), a second rear pulley (112), a first transmission pulley (113), and a first transmission belt (115); A pulley (122), a second transmission pulley (123), a second tensioning pulley (124) and a second transmission belt (125); the second transmission belt (125) sequentially passes over the second front pulley (121), the second rear pulley (122), the second tensioning pulley (124) and the second transmission pulley (123); the second tensioning pulley (124) is rotatably arranged on a second tensioning assembly (126); the second tensioning assembly (126) is used to drive the second tensioning pulley (124) in a direction that is an acute angle or a right angle to a second direction; the second direction is a connecting direction of the second transmission pulley (123) and the second rear pulley (122); the first transmission pulley (113) and the second transmission pulley (123) are both connected to a first transmission shaft (131), and are both connected to a first drive motor (132).

10. The double-layer conveyor line according to any one of claims 1 to 6, characterized in that: The double-layer conveyor line also includes a lower conveyor line (600), and the lower conveyor line (600) includes a third conveying mechanism (610) and a fourth conveying mechanism (620); the third conveying mechanism (610) includes a third front pulley (611), a third rear pulley (612), a third transmission pulley (613), a third tension pulley (614) and a third transmission belt (615); the third transmission belt (615) passes around the third front pulley (611), the third rear pulley (612), the third tension pulley (614) and the third transmission pulley (613) in sequence; the third tension pulley (614) is rotatably arranged on a third tensioning assembly (616); the third tensioning assembly (616) is used to drive the third tensioning pulley (614) in a direction that is an acute angle or a right angle to a third direction, and the third direction is a connecting direction of the third transmission pulley (613) and the third rear pulley (612); The fourth conveying mechanism (620) comprises a fourth front pulley (621), a fourth rear pulley (622), a fourth transmission pulley (623), a fourth tension pulley (624) and a fourth transmission belt (625); the fourth transmission belt (625) passes around the fourth front pulley (621), the fourth rear pulley (622), the fourth tension pulley (624) and the fourth transmission pulley (623) in sequence; the fourth tension pulley (624) is rotatably arranged on a fourth tensioning assembly (626); the fourth tensioning assembly (626) is used to drive the fourth tensioning pulley (624) in a direction that is an acute angle or a right angle to a fourth direction; the fourth direction is a connecting direction of the fourth transmission pulley (623) and the fourth rear pulley (622); the third transmission pulley (613) and the fourth transmission pulley (623) are both connected to the second transmission shaft (631), and are both connected to the second drive motor (632).

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