Unpowered roller conveying line

Abstract

The utility model discloses an unpowered roller conveying line which comprises a rack, the height of the rack is gradually reduced from a feeding end to a discharging end, conveying rollers are installed on the rack in the conveying direction from feeding to discharging of the rack at intervals, and a supporting plate downward-sliding slope for containing a material supporting plate and allowing the material supporting plate to slide downwards is formed on the upper end face of each conveying roller. A supporting plate blocking frame is installed below the conveying rollers and at the discharging end of the machine frame, the middle of the supporting plate blocking frame is rotatably installed on the machine frame through a rotating shaft, a push rod perpendicular to the conveying rollers is arranged below the supporting plate blocking frame, one end of the push rod extends out of the machine frame, and the other end of the push rod extends out of the machine frame. The tail end of the connecting rod is fixedly connected with the middle part of the supporting plate blocking frame; at least one middle-position baffle and at least one discharging baffle are arranged at the positions, close to the feeding end and the discharging end of the rack, of the supporting plate blocking frame respectively, and when the push rod moves towards the feeding end under the action of external force, the push rod can drive the connecting rod to pull the supporting plate blocking frame to rotate, so that the middle-position baffle or the discharging baffle extends out of the upper end face of the conveying roller.

Description

Technical Field

[0001] The utility model relates to the field of material conveying equipment, in particular to a non-powered roller conveyor line. Background Art

[0002] In the manufacturing industry, in order to transport products in a centralized manner, automatic conveyor lines are usually set up to transport products or materials. Among them, roller conveyor lines are the more common conveying devices in conveyor lines. At present, roller conveyor lines mainly include a frame and a plurality of rollers arranged at intervals along the length direction of the frame. The rollers rotate after transmitting power through a belt or gear mechanism, and the materials on the rollers are transported to the next workstation along the conveying direction by continuous rotation. That is, when existing rollers convey materials, a transmission mechanism is required to transmit power, and the transmission mechanism is connected to a drive mechanism, and power is provided by the drive mechanism.

[0003] The feed end and the discharge end of the above-mentioned roller conveyor line frame are at the same height. The roller needs to be powered by a driving mechanism, and the transmission mechanism needs to provide power to realize the transmission of materials. The maintenance and production costs are relatively high. In order to realize unpowered transportation, the Chinese patent with application number 201921932321.X discloses a downhill damping roller conveyor, including a conveyor frame, and a conveying section, a centering section and a docking section are arranged from the upstream to the downstream of the conveyor frame. The conveying section includes a number of first conveying rollers, and the first conveying roller is provided with a driving mechanism to drive its rotation. The centering section includes two rows of second conveying rollers arranged in a "human" shape, and the docking section includes a number of third conveying rollers. The above-mentioned conveyor line can realize unpowered material transportation by tilting the frame and installing conveying rollers on the frame. However, its inclination angle is large, the material slides down too fast, there is no buffer, and it is easy to slide out of the conveyor line under the action of inertia. At the same time, after the materials are continuously transported to the discharge end, collisions are likely to occur between the material pallet at the end and the adjacent material pallet, which will cause the materials and the material pallet to be knocked out of the conveyor line, which is not conducive to forklift unloading. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a non-powered roller conveyor line to solve the problems that the existing weightless material picking mechanism has a large inclination angle, the end material pallet is unobstructed after the material pallet slides down, and the material pallet adjacent to the end material pallet cannot be positioned, the material pallet is easily bumped out of the conveyor line, and it is inconvenient for forklifts to unload materials.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A non-powered roller conveyor line comprises a frame whose height gradually decreases from a feeding end to a discharging end, at least one row of conveying rollers is installed on the frame at intervals along the conveying direction from the feeding end to the discharging end of the frame, the upper end surface of the conveying roller forms a pallet sliding slope for placing a material pallet and for the material pallet to slide down, and each conveying roller can rotate under the action of friction; a pallet stopper is installed under the conveying roller and at the discharging end of the frame, the middle part of the pallet stopper is rotatably installed on the frame through a rotating shaft, and a push rod arranged perpendicular to the direction of the conveying roller is provided under the pallet stopper, one end of the push rod extends out of the frame, and the other end is hinged to a connecting rod whose end is fixedly connected to the middle part of the pallet stopper; At least one middle baffle and a discharge baffle are respectively provided on the pallet baffle near the feed end and the discharge end of the frame, and the pallet baffle is arranged at an angle, and the height of the end near the discharge end of the frame is higher than that of the other end, and the discharge baffle of the pallet baffle is placed between two adjacent conveying rollers at the discharge end of the frame and extends out of the upper end of the conveying roller, and the middle baffle is placed under the conveying roller; when the push rod moves toward the feed end under the action of external force, the push rod can drive the connecting rod to pull the pallet baffle to rotate, so that the height of the pallet baffle near the feed end of the frame is higher than that of the other end, and the middle baffle extends out of the conveying roller and is placed between two adjacent conveying rollers, which can block and position the penultimate material pallet at the discharge end. In this way, after the material is put into the material pallet and placed on the sliding slope of the pallet, since the feed end is at the high point of the slope, after being put in, under the action of gravity, the material pallet will slide to the discharge end on the sliding slope of the pallet. During the sliding, the conveying roller will rotate after rubbing against the lower part of the sliding material pallet, thereby ensuring that the material pallet continues to slide down under the dual action of gravity and rotational force. When the material pallet slides down to the discharge end of the sliding slope of the pallet, the discharge baffle of the pallet baffle frame at the discharge end will block the material pallet to prevent the material pallet from sliding out. At this time, the material picking cart collides with the push rod, and the pallet baffle will rotate, the middle baffle on the side close to the feeding end will extend, and the discharging baffle will move down to the sliding slope under the pallet, and the material pallet will slide down to the material picking cart; during the material picking period, the second material pallet will slide down to the discharging end successively. At this time, the extended middle baffle will block the material pallet to prevent the material pallet from colliding with the material picking pallet at the end, and so on. The additional pallet baffle adopts the seesaw principle. After being controlled to tilt in different directions, the corresponding baffles on different sides are extended to realize material picking and prevent collisions between material pallets. The first material pallet at the discharging end and the subsequent material pallets can block and position the material pallet before and after picking. The material pallet used has a simple structure, is easy to install, and has a low cost.

[0007] Furthermore, an inverted U-shaped lever is provided on the frame beside the material discharging end of the frame, and the left and right ends of the inverted U-shaped lever are tightly matched with the corresponding sides of the frame, and can be removed by pulling under the action of external force. In this way, the U-shaped lever can increase the blocking strength of the material discharging end, and can be directly removed by pulling when it is necessary to take the material. The installation and disassembly are relatively convenient, and the installation structure is also relatively simple.

[0008] Furthermore, the frame includes a left profile seat and a right profile seat with multiple legs at the lower end, and a connecting rod connected between the left and right profile seats. The height of the legs of the left profile seat and the right profile seat gradually decreases from the feed end to the discharge end, and the upper end surfaces of the left profile seat and the right profile seat are higher than the upper end surface of the conveyor roller to form a side block. In this way, the overall structure of the frame is relatively stable, and the conveyor roller is installed through the left and right profile seats, and the legs are connected through the connecting rod, so as to form a stable bracket. The left and right profile seats are higher than the conveyor roller, and can form a preliminary enclosure.

[0009] Furthermore, at least one middle profile parallel to the left profile seat and the right profile seat is provided, and the two ends of the middle profile are respectively fixed on the connecting rods of the feed end and the discharge end, and the upper end surface is in the same plane as the left profile seat; and a roller installation space is formed between the middle profile and the left profile seat, between the middle profile and the right profile seat, and between two adjacent middle profiles, and the left and right ends of the conveying roller are installed on both sides of the corresponding roller installation space through the rotation of the roller shaft. In this way, after the middle profile is set, multiple rows of conveying rollers can be installed, each row of conveying rollers corresponds to a material pallet, or three rows of conveying rollers correspond to a larger material pallet for conveying, and the installation can be adaptively adjusted according to the specific conveying pallet and the volume of the conveyed material.

[0010] Furthermore, the left profile seat and the right profile seat are both U-shaped, and the opening side is set toward the lower sliding slope of the pallet. A plurality of rubber rollers are installed on the inner side of the left profile seat and the right profile seat and along the length direction of the left profile seat and the right profile seat. The installation height of the rubber rollers on both sides is higher than the lower sliding slope of the pallet, and can rotate under the action of friction. In this way, after the rubber rollers are set, the side end of the material pallet will not directly generate friction with the inner side of the profile seat adjacent to it. At the same time, after the rubber rollers are in contact with the sliding material pallet, they can also rotate, reducing the lateral friction of the material pallet and accelerating the sliding of the material pallet, thereby setting the slope of the lower sliding slope of the pallet to be smaller, preventing the material pallet from sliding too fast and causing excessive collision force with the baffle.

[0011] Furthermore, a guide plate is fixedly installed on the outer side of the discharge end of the left profile seat and the right profile seat, and both guide plates extend out of the discharge end of the left profile seat and the right profile seat, and the outer side of the extended end is tilted outward to form an eight-shaped shape. In this way, when retrieving materials, the guide plate can clamp the retrieving trolley in the guide plate, guide and clamp the material trolley so that it can correspond neatly with the retrieving end, and the material support plate at the retrieving end can easily enter the retrieving trolley.

[0012] Furthermore, the pallet baffle is a rectangular frame with a reinforcing rod in the middle, and the median baffle and the discharge baffle are fixed on the rectangular frame, two of each are provided, and are distributed in a rectangular shape; a bearing seat is provided on the left and right sides of the middle of the frame and below the conveying roller, and the rotating shaft sleeve is provided in the middle of the rectangular frame, and the left and right ends are respectively matched with the bearing seats on the corresponding sides; the connecting rod is fixedly connected to the middle of the reinforcing rod. In this way, the pallet baffle is rectangular, and the median baffle and the discharge baffle are provided with two each, and are distributed in a rectangular shape. Each blocking position is provided with two baffles, and the blocking is more stable. The bearing seat provided can facilitate the installation of the pallet baffle, and the connecting rod is fixedly connected to the reinforcing rod in the middle of the pallet baffle, which can ensure that when the connecting rod changes position, it will pull the pallet baffle to move accordingly.

[0013] Furthermore, a positioning cylinder is provided at the discharging end of the frame and below the conveying roller, and the push rod is sleeved on the positioning cylinder and can move along the axial direction of the positioning cylinder. A vertical plate is provided at the end of the push rod extending out of the frame, and a foot pedal connected to the push rod is provided on one side of the push rod. When the foot pedal is subjected to external force and moves downward, the push rod is pulled, and the end of the push rod connected to the connecting rod is tilted upward, driving the end of the support plate retaining frame close to the feeding end to tilt upward and position. In this way, when the material support plate at the end is removed and the second material support plate needs to be taken, if the weight of the material on the material support plate is large, it is difficult for the push rod to push the support plate retaining frame to rotate after being subjected to force. To avoid this situation, after adding a foot pedal, the push rod can be subjected to the downward pressure of the foot pedal, and the force is greater, thereby pulling the support plate retaining frame, so that the middle baffle is downward, and the material support plate can slide to the end of the material taking end.

[0014] Furthermore, the slope of the sliding slope of the pallet is 1.5-5°. This setting can ensure that the slope of the sliding slope is small, thereby ensuring that the speed of the material pallet sliding down is not too fast, resulting in a large impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A top view of the unpowered roller conveyor line in the embodiment;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the discharge end of the unpowered roller conveyor line in the embodiment;

[0017] Figure 3This is a schematic diagram of the structure after an inverted U-shaped stop bar is installed at the discharge end of the embodiment;

[0018] Figure 4 It is a schematic diagram of the side structure of the discharge end portion of the unpowered roller conveyor line in the embodiment;

[0019] Figure 5 A top view of the support plate retaining frame in the embodiment;

[0020] Figure 6 It is a side enlarged structural schematic diagram of the support plate retaining frame in the embodiment. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0022] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1-Figure 6As shown, the unpowered roller conveyor line provided in this embodiment includes a frame 1 whose height gradually decreases from the feed end to the discharge end, and at least one row of conveying rollers 2 are installed at intervals on the frame 1 along the conveying direction from the feed end to the discharge end of the frame 1, and the upper end surface of the conveying roller 2 forms a pallet sliding slope for placing a material pallet 5 and for the material pallet 5 to slide down (the slope of the pallet sliding slope is 3.5°), and each conveying roller 2 can rotate under the action of friction; a pallet retaining frame 3 is installed under the conveying roller 2 and at the discharge end of the frame 1, and the middle part of the pallet retaining frame 3 is rotatably mounted on the frame 1 through a rotating shaft 35 (specifically, a bearing seat is respectively provided on the left and right sides of the frame, and a shaft sleeved in the bearing seat is provided on the outer ends of the left and right sides of the pallet retaining frame), and a push rod 37 arranged perpendicular to the direction of the conveying roller 2 is provided below the pallet retaining frame 3 (the push rod 37 is suspended under the pallet retaining frame without restriction). One end of the push rod 37 extends out of the frame 1, and the other end is hinged with a connecting rod 36 whose end is fixedly connected to the middle part of the pallet baffle frame 3; at least one middle baffle plate 33 and a discharge baffle plate 34 are respectively provided at the pallet baffle frame 3 near the feeding end of the frame 1 and the discharging end of the frame 1, and the pallet baffle frame 3 is inclinedly arranged, and the height of the end near the discharging end of the frame 1 is higher than the height of the other end, and the discharge baffle plate 34 of the pallet baffle frame 3 is placed between two adjacent conveying rollers 2 at the discharging end of the frame 1 and extends out of the upper end of the conveying roller 2, and the middle baffle plate 33 is placed under the conveying roller 2; when the push rod 37 moves toward the feeding end under the action of external force, the push rod 37 can drive the connecting rod 36 to pull the pallet baffle frame 3 to rotate, so that the height of the pallet baffle frame 3 near the feeding end of the frame 1 is higher than the other end, and the middle baffle plate 33 extends out of the conveying roller 2 and is placed between the two adjacent conveying rollers 2, which can block and position the second to last material pallet 5 at the discharging end. In this way, after the material is put into the material pallet 5 and placed on the lower slope of the pallet, since the feed end is at the high point of the slope, after being put in and gently pushed, under the action of gravity, the material pallet 5 will slide on the lower slope of the pallet to the discharge end. During the sliding, the conveying roller 2 will rotate after rubbing against the lower part of the material pallet 5 sliding down, thereby ensuring that the material pallet 5 continues to slide down under the dual action of gravity and rotational force. When the material pallet 5 slides down to the discharge end of the lower slope of the pallet, the discharge baffle 34 of the pallet baffle frame 3 at the discharge end will block the material pallet 5 to prevent the material pallet 5 from sliding out. At this time, the material picking trolley collides with the push rod 37, the pallet baffle 3 will rotate, the middle baffle 33 close to the feeding end side will extend, the discharge baffle 34 will move down to the lower sliding slope of the pallet, and the material pallet 5 will slide down onto the material picking trolley; during the material picking period, the second material pallet 5 will slide down to the discharge end, at this time, the extended middle baffle 33 will block the material pallet 5 to prevent the material pallet 5 from colliding with the material picking pallet at the end, and so on.The additional support plate baffle 3 adopts the seesaw principle, and after being tilted in different directions, the baffles corresponding to different sides are extended to realize material taking and prevent collision between material support plates 5. The first material support plate 5 at the discharging end and the subsequent material support plates 5 can block and position the material support plates 5 before and after taking the materials. The adopted material support plates 5 have a simple structure, are easy to install, and have a low cost.

[0024] In order to avoid the blocking force of the discharging baffle being insufficient, an inverted U-shaped lever 4 is also provided on the frame 1 beside the discharging end of the frame 1. The left and right ends of the inverted U-shaped lever 4 are tightly fitted with the corresponding sides of the frame 1, and can be removed after being pulled up under the action of external force. In this way, the U-shaped lever provided can increase the blocking strength of the discharging end. When it is necessary to take the material, it can also be directly removed by pulling up. The installation and disassembly are relatively convenient, and the installation structure is also relatively simple. In the specific implementation, in order to facilitate the lifting and pulling of the inverted U-shaped lever 4, a handle is also provided on the inverted U-shaped lever 4. Blocks for clamping the side ends of the inverted U-shaped lever 4 are provided on the left and right sides of the frame 1. The block is U-shaped and is welded and fixed to the frame.

[0025] Furthermore, the frame 1 includes a left profile seat 11 and a right profile seat 12 with multiple legs 15 at the lower end, and a connecting rod 14 connected between the left and right profile seats. The height of the legs 15 of the left profile seat 11 and the right profile seat 12 gradually decreases from the feed end to the discharge end, and the upper end surfaces of the left profile seat 11 and the right profile seat 12 are higher than the upper end surface of the conveyor roller 2 to form a side block. In this way, the overall structure of the frame 1 is relatively stable, and the conveyor roller 2 is installed through the left and right profile seats, and the legs 15 are connected through the connecting rod 14, so as to form a stable bracket. The left and right profile seats are higher than the conveyor roller 2, and can form a preliminary enclosure.

[0026] The lower end of the material support plate 5 used in this embodiment is provided with three rows of legs to facilitate the forklift to extend therein. In order to adapt to the structure of the legs of the material support plate 5, four parallel middle profiles 13 are also arranged between the left profile seat 11 and the right profile seat 12. The two ends of the middle profile 13 are respectively fixed on the connecting rods 14 at the feeding end and the discharging end, and the upper end surface is in the same plane as the left profile seat 11; and a roller installation space (such as 1 / 4" is formed between the middle profile 13 and the left profile seat 11, between the middle profile 13 and the right profile seat 12, and between two adjacent middle profiles 13. Figure 1As shown, after the middle profile 13 is installed, a three-row conveyor roller installation space is formed, corresponding to the leg sliding of the material support plate), and the left and right ends of the conveyor roller 2 are installed on both sides of the corresponding roller installation space through the roller shaft rotation. In this way, after the middle profile 13 is set, multiple rows of conveyor rollers 2 can be installed, each row of conveyor rollers 2 corresponds to a material support plate 5, or three rows of conveyor rollers 2 correspond to a material support plate 5 with legs at the bottom for conveying, and the installation can be adaptively adjusted according to the specific conveyor support plate and the volume of the conveyed material.

[0027] Furthermore, the left profile seat 11 and the right profile seat 12 are both U-shaped, and the opening side is set toward the lower sliding slope of the pallet. A plurality of rubber rollers 16 are installed on the inner side of the left profile seat 11 and the right profile seat 12 and along the length direction of the left profile seat 11 and the right profile seat 12. The installation height of the rubber rollers 16 on both sides is higher than the lower sliding slope of the pallet, and can rotate under the action of friction. In this way, after the rubber rollers 16 are set, the side ends of the material pallet 5 will not directly generate friction with the inner side of the profile seat adjacent thereto. At the same time, after the rubber rollers 16 are in contact with the sliding material pallet 5, they can also rotate, reducing the lateral friction of the material pallet 5 and accelerating the sliding of the material pallet 5, thereby setting the slope of the lower sliding slope of the pallet to be smaller, and preventing the material pallet 5 from sliding too fast and causing excessive collision force with the baffle.

[0028] Furthermore, a guide plate 17 is fixedly installed on the outer side of the discharge end of the left profile seat 11 and the right profile seat 12. Both guide plates 17 extend out of the discharge end of the left profile seat 11 and the right profile seat 12, and the outer side of the extended end is tilted outward to form an eight-shaped shape. In this way, when taking materials, the guide plate 17 can clamp the material trolley in the guide plate 17, guide and clamp the material trolley so that it can correspond neatly with the material end, and the material support plate 5 at the material end can easily enter the material trolley.

[0029] Furthermore, the pallet baffle 3 is a rectangular frame 31 with a reinforcing rod 32 in the middle. The middle baffle 33 and the discharge baffle 34 are fixed on the rectangular frame 31, two of them are respectively provided and distributed in a rectangular shape. A bearing seat is provided on the left and right sides of the middle of the frame 1 and below the conveying roller 2. The rotating shaft 35 is sleeved in the middle of the rectangular frame 31, and the left and right ends are respectively matched with the bearing seats on the corresponding sides. The pull rod is fixedly connected to the middle of the reinforcing rod 32. In this way, the pallet baffle 3 is rectangular, and the middle baffle 33 and the discharge baffle 34 are respectively provided with two and distributed in a rectangular shape. Each blocking position is provided with two baffles, and the blocking is more stable. The bearing seat provided can facilitate the installation of the pallet baffle 3, and the pull rod is fixedly connected to the reinforcing rod 32 in the middle of the pallet baffle 3, which can ensure that when the pull rod changes position, it will pull the pallet baffle 3 to move accordingly.

[0030] In order to facilitate the middle part of the material-taking trolley to correspond to the push rod 37 and to apply force to the push rod 37, a positioning cylinder is provided at the discharging end of the frame 1 and below the conveying roller 2. The push rod 37 is sleeved on the positioning cylinder and can move along the axial direction of the positioning cylinder. A vertical plate is provided at the end of the push rod 37 extending outside the frame 1. When the material pallet 5 at the end is taken off and the second material pallet 5 needs to be taken, if the weight of the material on the material pallet 5 is large, it is difficult for the push rod 37 to push the pallet stop frame 3 to rotate after being subjected to force. To avoid this situation, a pedal 39 connected to the push rod 37 is provided on one side of the push rod 37. When the pedal 39 is subjected to external force and moves downward, the push rod 37 is pulled, and the end of the push rod 37 connected to the connecting rod 36 is tilted upward, driving the end of the pallet stop frame 3 close to the feeding end to tilt upward and position. After adding a foot pedal 39, the push rod 37 can be subjected to the downward pressure of the foot, and the force is greater, thereby pulling the support plate baffle 3, so that the middle baffle 33 is downward, and the material support plate 5 can slide to the end of the material taking end.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A non-powered roller conveyor line, comprising a frame whose height gradually decreases from the feed end to the discharge end, and at least one row of conveying rollers are installed on the frame at intervals along the conveying direction from the feed end to the discharge end of the frame, and the upper end surface of the conveying roller forms a pallet sliding slope for placing a material pallet and for the material pallet to slide down, and each conveying roller can rotate under the action of friction; characterized in that: A pallet baffle is installed under the conveying roller and at the discharging end of the frame, and the middle part of the pallet baffle is rotatably installed on the frame through a rotating shaft. A push rod arranged perpendicular to the direction of the conveying roller is provided under the pallet baffle, one end of the push rod extends out of the frame, and the other end is hinged with a connecting rod whose end is fixedly connected to the middle part of the pallet baffle; at least one middle baffle and a discharging baffle are respectively provided at the pallet baffle near the feeding end of the frame and the discharging end of the frame, and the pallet baffle is arranged in an inclined manner, near the end of the discharging end of the frame The height of one end is higher than that of the other end, and the discharge baffle of the pallet baffle is placed between two adjacent conveying rollers at the discharge end of the frame and extends out of the upper end of the conveying roller, and the middle baffle is placed under the conveying roller; when the push rod moves toward the feed end under the action of external force, the push rod can drive the connecting rod to pull the pallet baffle to rotate, so that the height of the pallet baffle near the feed end of the frame is higher than that of the other end, and the middle baffle extends out of the conveying roller and is placed between two adjacent conveying rollers, which can block and position the penultimate material pallet at the discharge end.

2. The unpowered roller conveyor line according to claim 1, characterized in that: An inverted U-shaped lever is also arranged on the frame beside the discharging end of the frame. The left and right ends of the inverted U-shaped lever are tightly matched with the corresponding sides of the frame and can be removed after being pulled up under the action of external force.

3. The unpowered roller conveyor line according to claim 1 or 2, characterized in that: The frame includes a left profile seat and a right profile seat with multiple legs at the lower end, and a connecting rod connected between the left and right profile seats. The heights of the legs of the left profile seat and the right profile seat gradually decrease from the feed end to the discharge end, and the upper end surfaces of the left profile seat and the right profile seat are higher than the upper end surface of the conveying roller to form a side stop.

4. The unpowered roller conveyor line according to claim 3, characterized in that: At least one middle profile parallel to the left profile seat is provided between the left profile seat and the right profile seat, and the two ends of the middle profile are respectively fixed on the connecting rods at the feed end and the discharge end, and the upper end surface is in the same plane as the left profile seat; and a roller installation space is formed between the middle profile and the left profile seat, between the middle profile and the right profile seat, and between two adjacent middle profiles, and the left and right ends of the conveying roller are rotatably installed on both sides of the corresponding roller installation space through the roller shaft.

5. The unpowered roller conveyor line according to claim 4, characterized in that: The left profile seat and the right profile seat are both U-shaped, and the open side is arranged toward the sliding slope of the support plate. A plurality of rubber rollers are installed on the inner side of the left profile seat and the right profile seat and along the length direction of the left profile seat and the right profile seat. The installation height of the rubber rollers on both sides is higher than the sliding slope of the support plate and can rotate under the action of friction.

6. The unpowered roller conveyor line according to claim 5, characterized in that: A guide plate is fixedly installed on the outer side of the discharge end of the left profile seat and the right profile seat. Both guide plates extend out of the discharge end of the left profile seat and the right profile seat, and the outer side of the extended end is tilted outward to form an eight-shaped shape.

7. The unpowered roller conveyor line according to claim 1, 2, 4 or 6, characterized in that: The support plate baffle is a rectangular frame with a reinforcing rod in the middle. The middle baffle and the discharge baffle are fixed on the rectangular frame, and two are respectively provided and distributed in a rectangular shape. A bearing seat is provided on the left and right sides of the middle of the frame and below the conveying roller. The rotating shaft sleeve is arranged in the middle of the rectangular frame, and the left and right ends are respectively matched with the bearing seats on the corresponding sides; the connecting rod is fixedly connected to the middle of the reinforcing rod.

8. The unpowered roller conveyor line according to claim 7, characterized in that: A positioning cylinder is provided at the discharge end of the frame and below the conveying roller, the push rod is sleeved on the positioning cylinder and can move along the axial direction of the positioning cylinder, a vertical plate is provided at the end of the push rod extending out of the frame, and a pedal connected to the push rod is provided on one side of the push rod. When the pedal is subjected to external force and moves downward, the push rod is pulled, and the end of the push rod connected to the connecting rod is tilted upward, driving the end of the support plate baffle frame close to the feed end to tilt upward and position.

9. The unpowered roller conveyor line according to claim 1 or 2 or 4 or 6 or 8, characterized in that: The slope of the sliding down slope of the support plate is 1.5-5°.

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