Material smoothing device and stacking system

Abstract

The invention discloses a material smoothing device and a stacking system. The material smoothing device comprises a rack, a conveying assembly and a smoothing assembly, and the conveying assembly is provided with a conveying structure for outputting materials; the smoothing assembly comprises a rotating support, a smoothing piece and an elastic piece, the rotating support is rotatably connected to the rack, the smoothing piece is connected with the rotating support and arranged above the conveying structure, and the elastic piece is connected with the rotating support and the rack. The smoothing piece is pressed on the bagged materials through the weight of the smoothing piece and downward pressure provided by the elastic piece, the materials in the bagged materials tend to be flat through pressing of the smoothing piece, and due to the fact that the rotating support can rotate around the hinge point of the rotating support and the machine frame, the smoothing piece floats upwards when encountering material thickness changes or large protrusions, and the materials in the bagged materials tend to be flat. And the elastic force of the elastic piece continuously presses the smoothing piece back downwards, and it is ensured that the smoothing piece exerts stable flattening acting force on the surface of the material.

Description

Technical Field

[0001] The present invention relates to the technical field of material leveling, and in particular to a material leveling device and a palletizing system. Background Art

[0002] In the automated production process of products, powdered or granular materials are usually packaged and transported in bags, and the materials are stacked and packaged after being bagged.

[0003] The powdered material is filled by the packaging machine. During the filling process, the opening of the packaging bag faces upward. After the filling is completed, the opening of the packaging bag is sewn. After the sewing is completed, the vertically set packaging bag is pushed down to be flat, and then stacked and packaged.

[0004] After filling, there is more powdery material at the bottom of the packaging bag and the top is relatively empty. After the packaging bag is pushed down and laid flat, the powdery material is concentrated on one side of the packaging bag, resulting in an uneven shape of the packaging bag, which is not convenient for subsequent stacking. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a material smoothing device and a stacking system to solve the technical problem in the prior art that powdered materials are concentrated on one side of the packaging bag, resulting in an uneven shape of the packaging bag and inconvenience in subsequent stacking.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a material smoothing device, comprising: frame; A conveying component having a conveying structure for outputting materials; and The smoothing component includes a rotating bracket, a smoothing member and an elastic member. The rotating bracket can be rotatably connected to the frame. The smoothing member is connected to the rotating bracket and is arranged above the conveying structure. The elastic member connects the rotating bracket and the frame.

[0007] In one embodiment, the elastic member includes a rod body, a first limiting portion and a first elastic portion, one end of the rod body is hinged to the frame, and the other end can slide through the rotating bracket, the first limiting portion is connected to the rod body and passes through one end of the rotating bracket, one end of the first elastic portion is connected to the rod body, and the other end abuts the rotating bracket, and pushes the rotating bracket to abut the first limiting portion.

[0008] In one embodiment, the elastic member further includes a second limiting portion, which is connected to the rod body and is arranged on a side of the rotating bracket away from the first limiting portion. The second limiting portion is adjustable in the axial fixed position of the rod body, and one end of the first elastic portion abuts against the second limiting portion and abuts against the rod body through the second limiting portion.

[0009] In one embodiment, the smoothing member is rotatably connected to the rotating bracket.

[0010] In one embodiment, the smoothing member is a roller rotatably connected to the rotating bracket.

[0011] In one embodiment, the smoothing member includes a rotating shaft, two fixed disks and a plurality of smoothing rollers. The rotating shaft is rotatably connected to the rotating bracket. The two fixed disks are connected to the rotating shaft and are arranged at intervals. The plurality of smoothing rollers are arranged between the two fixed disks. The two ends of the smoothing rollers are respectively connected to the two fixed disks. The plurality of smoothing rollers are distributed at intervals along the circumference of the rotating shaft.

[0012] In one embodiment, both ends of the smoothing roller are rotatably connected to the two fixed disks respectively.

[0013] In one embodiment, the conveying assembly is a square roller conveyor, and the conveying structure is a square roller.

[0014] In one embodiment, the plurality of smoothing rollers are slidably connected to the fixed disk along the radial direction of the fixed disk; The smoothing member also includes a second elastic portion, which connects the smoothing roller and the fixed disk and is used to provide elastic force for the smoothing roller to reset after sliding radially along the fixed disk. The stiffness of the second elastic portion is less than that of the elastic member.

[0015] In a second aspect, the present invention further provides a palletizing system comprising the above-mentioned material flattening device.

[0016] Compared with the prior art, the material flattening device and stacking system provided by the present invention transport bagged materials through the conveying structure of the conveying assembly, and the flattening piece is suspended above the conveying structure through a rotating bracket. When the bagged material passes under the flattening piece, the flattening piece relies on its own weight and the downward pressure provided by the elastic piece to press on the bagged material, and the pressure of the flattening piece pushes the material in the bagged material to be flat. Since the rotating bracket can rotate around the hinge point between it and the frame, when the flattening piece encounters changes in material thickness or large protrusions, it floats upward to avoid jamming or damage to the material. The elastic force of the elastic piece continues to press the flattening piece back downward to ensure that it exerts a stable flattening force on the surface of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic structural diagram of a material smoothing device provided in one embodiment of the present invention; Figure 2 yes Figure 1 A partial enlarged schematic diagram of point A in the middle; Figure 3 1 is a schematic structural diagram of a material smoothing device provided in one embodiment of the present invention; Figure 4 1 is a schematic structural diagram of a material smoothing device provided in one embodiment of the present invention; Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B in the middle; Figure 6 It is a cross-sectional view of a smoothing member in a material smoothing device provided in one embodiment of the present invention.

[0018] Description of reference numerals: Rack 1; Conveying component 2; Smoothing assembly 3; rotating bracket 31; smoothing member 32; rotating shaft 321; fixing plate 322; smoothing roller 323; second elastic portion 324; slider 325; damping layer 326; elastic member 33; rod body 331; first limiting portion 332; first elastic portion 333; second limiting portion 334. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In order to solve the technical problem that powdery materials are concentrated on one side of the packaging bag, resulting in an uneven shape of the packaging bag and inconvenience in subsequent stacking, the present invention provides a material smoothing device and a stacking system, which can solve the technical problem of uneven powdery materials in the packaging bag.

[0021] It should be noted that the material smoothing device described in the present invention is used for but not limited to palletizing systems, etc. For the convenience of explanation, in the present invention, only the application of the material smoothing device to the palletizing system is used as an example for explanation. The principle of applying the material smoothing device to other types of equipment is essentially the same as the principle of applying it to the palletizing system, and will not be described one by one here.

[0022] See also Figure 1 and Figure 2 , Figure 1 Schematic diagram of the structure of a material flattening device in one embodiment of the present invention. Figure 2 yes Figure 1The partially enlarged schematic diagram at point A in the middle shows that the material smoothing device includes a frame 1, a conveying component 2 and a smoothing component 3. The conveying component 2 has a conveying structure for outputting materials; the smoothing component 3 includes a rotating bracket 31, a smoothing member 32 and an elastic member 33. The rotating bracket 31 can be rotatably connected to the frame 1. The smoothing member 32 is connected to the rotating bracket 31 and is arranged above the conveying structure. The elastic member 33 connects the rotating bracket 31 and the frame 1.

[0023] Specifically, the bagged material is conveyed through the conveying structure of the conveying assembly 2, and the smoothing member 32 is suspended above the conveying structure by the rotating bracket 31. When the bagged material passes under the smoothing member 32, the smoothing member 32 relies on its own weight and the downward pressure provided by the elastic member 33 to press on the bagged material. The pressure of the smoothing member 32 pushes the material in the bagged material to be flat. Since the rotating bracket 31 can rotate around the hinge point between it and the frame 1, when the smoothing member 32 encounters changes in material thickness or large protrusions, it floats upward to avoid getting stuck or damaging the material. The elastic force of the elastic member 33 continues to press the smoothing member 32 back downward to ensure that it exerts a stable flattening force on the surface of the material.

[0024] It should be understood that the elastic member 33 may be a spring, an elastic rod, an elastic strip, etc. Specifically, Figure 2 As shown, in one embodiment, the elastic member 33 includes a rod body 331, a first limiting portion 332 and a first elastic portion 333. One end of the rod body 331 is hinged to the frame 1, and the other end can slide through the rotating bracket 31. The first limiting portion 332 is connected to the rod body 331 and passes through one end of the rotating bracket 31. One end of the first elastic portion 333 is connected to the rod body 331, and the other end abuts the rotating bracket 31, and pushes the rotating bracket 31 to abut the first limiting portion 332.

[0025] When the material thickness is normal or there is a slight bulge that needs to float, the rotating bracket 31 can overcome the elastic force of the first elastic part 333 and rotate in the direction away from the first limit part 332. After the material passes through, the first elastic part 333 resets the rotating bracket 31, and the rotating bracket 31 again presses against the first limit part 332, so that the smoothing member 32 returns to the preset reference height; the sliding connection between the rod body 331 and the rotating bracket 31 ensures that the bracket can float up and down smoothly, and can play a connecting and guiding role.

[0026] It should be understood that one end of the rod body 331 can be hinged to the frame 1 through the rotating shaft 321, the rotating pin and the rotating rod.

[0027] It should be understood that the first elastic portion 333 can be directly connected to the rod body 331, or can be indirectly connected to the rod body 331 via other components. Specifically, Figure 2As shown, in one embodiment, the elastic member 33 further includes a second limiting portion 334, which is connected to the rod body 331 and is arranged on the side of the rotating bracket 31 away from the first limiting portion 332. The second limiting portion 334 is adjustable in the axial fixed position along the rod body 331, and one end of the first elastic portion 333 abuts the second limiting portion 334, and abuts the rod body 331 through the second limiting portion 334.

[0028] Controlling the second limit part 334 to move toward the direction closer to the rotating bracket 31 changes the pre-compression amount of the first elastic part 333. When the pre-compression amount of the elastic part increases, the initial downward thrust of the elastic part on the rotating bracket 31 also increases, which means that the smoothing pressure applied to the material increases. Conversely, adjusting the second limit part 334 to move toward the direction away from the rotating bracket 31 and reducing the pre-compression amount, the initial downward thrust is reduced, and the smoothing pressure applied to the material is also reduced.

[0029] It should be understood that the second limiting portion 334 can be a sleeve slidably mounted on the rod body 331, and the second limiting portion 334 and the rod body 331 are connected by a set screw. The second limiting portion 334 can also be a nut threadedly connected to the rod body 331.

[0030] It should be understood that the smoothing member 32 and the rotating bracket 31 can be connected in a sliding manner, fixedly, or rotatably. Specifically, Figure 3 、 4 As shown in Figures 5 and 5 , in one embodiment, the smoothing member 32 is rotatably connected to the rotating bracket 31.

[0031] When material moves across the conveyor structure and contacts the smoothing element 32, the friction generated between the material and the smoothing element 32 drives the smoothing element 32 to rotate about its own axis. The smoothing element 32 rolls instead of slides, significantly reducing the frictional resistance between the material and the smoothing element 32. This prevents excessive friction from causing damage or deformation to the bagged material. By reducing the friction applied by the smoothing element 32 to the bagged material, the conveyor structure does not need to overcome additional sliding friction, resulting in smoother operation. The rolling contact smoothes out wrinkles and reduces the risk of secondary creases or uneven stretching during the smoothing process.

[0032] like Figure 3 、 4 As shown in Figures 5 and 5 , in one embodiment, the smoothing member 32 is a roller rotatably connected to the rotating bracket 31.

[0033] Specifically, both ends of the roller are rotatably mounted on the rotating bracket 31 through bearings and other mechanisms. When the material moves, friction drives the roller to rotate, thereby achieving smoothing.

[0034] like Figure 4As shown, in another embodiment, the smoothing member 32 includes a rotating shaft 321, two fixed disks 322 and a plurality of smoothing rollers 323. The rotating shaft 321 is rotatably connected to the rotating bracket 31. The two fixed disks 322 are connected to the rotating shaft 321 and are arranged at intervals. The plurality of smoothing rollers 323 are arranged between the two fixed disks 322. The two ends of the smoothing roller 323 are respectively connected to the two fixed disks 322. The plurality of smoothing rollers 323 are distributed at intervals along the circumference of the rotating shaft 321.

[0035] Multiple smoothing rollers 323 are evenly spaced around the circumference of the rotating shaft 321. The entire assembly resembles a spherical cage structure. When the material passes through the smoothing rollers 323, driving the rotating shaft 321 to rotate, all smoothing rollers 323 revolve around the rotating shaft 321 as a whole, with their outer endpoints forming a circle. The material comes into contact with the rotating smoothing rollers 323, being rolled and smoothed. The circumferential distribution of multiple smoothing rollers 323 increases the area and probability of simultaneous contact with the material. This provides more opportunities for contact and pressure to be applied to stubborn wrinkles, resulting in a more pronounced smoothing effect. The rotating, spaced smoothing rollers 323 act like multiple fingers pressing and unfolding wrinkles in turn, and are more effective for certain types of wrinkles than a single smoothing roller 323.

[0036] It should be understood that the smoothing roller 323 and the fixed disk 322 can be fixedly connected or rotatably connected. Figure 4 As shown, in one embodiment, both ends of the smoothing roller 323 are rotatably connected to the two fixed disks 322 respectively.

[0037] As the entire smoothing element 32 orbits around the rotating shaft 321 due to friction from the bagged material, each smoothing roller 323, at the moment of contact with the bagged material, is also driven by friction to rotate about its own axis. This combined motion of revolution and rotation results in a nearly pure rolling state at the point of contact between each smoothing roller 323 and the bagged material. This results in less frictional resistance than simply rotating the rotating shaft 321. This extremely low friction virtually eliminates surface damage, scratches, or stretching deformation caused by the smoothing action.

[0038] It should be understood that the output assembly can be a roller conveyor, a belt conveyor, etc. Specifically, Figure 1 As shown, in one embodiment, the conveying component 2 is a square roller conveyor, and the conveying structure is a square roller.

[0039] When the conveying component 2 conveys bagged materials, it conveys the materials through the rotating multiple square rollers. When the square rollers rotate to convey the bagged materials, they will drive the bagged materials up and down. When multiple square rollers act together on a bagged material, while pushing the bagged materials for conveying, they can also vibrate the materials, so that the bagged materials vibrate while being conveyed.

[0040] When the bagged material is flattened, the material is mainly concentrated at one end of the bagged material entering the flattening member 32. If all the material is directly pushed toward the other side of the bagged material through the flattening member 32, it will cause excessive pressure to be applied to the bagged material. Figure 4 、 5 As shown in Figure 6, in one embodiment, a plurality of smoothing rollers 323 are connected to the fixed disk 322 along the radial sliding direction of the fixed disk 322; the smoothing member 32 also includes a second elastic portion 324, which connects the smoothing rollers 323 and the fixed disk 322 and is used to provide an elastic force for the smoothing rollers 323 to return to their original position after sliding radially along the fixed disk 322. The stiffness of the second elastic portion 324 is less than that of the first elastic portion 333.

[0041] When the smoothing member 32 is pressed toward the material, before contacting the bagged material, the first smoothing roller 323 contacts the bagged material. When the smoothing roller 323 pushes the material in the packaging bag to move, when the push reaches a certain amount, it retracts toward the center of the fixed disk 322 under the pressure of the material. The subsequent smoothing roller 323 rotates to contact the packaging bag, and then pushes a certain amount to move the material. Through multiple smoothing rollers 323, the materials at different heights can be pushed separately and in batches to disperse, so that the material in the packaging bag is gradually smoothed, avoiding a single direct smoothing of the material and applying Excessive pressure is applied to the packaging bag of the bagged material; moreover, by setting the stiffness of the second elastic part 324 to be smaller than the stiffness of the first elastic part 333, when the smoothing roller 323 contacts the packaging bag of the bagged material, it first pushes and smoothes the material, thereby preventing the smoothing roller 323 from pushing the smoothing member 32 and the rotating bracket 31 to rotate relative to the frame 1; at the same time, when the smoothing roller 323 passes through the deep concave wrinkle area of ​​the packaging bag, it maintains or quickly returns to its initial state under the push of the second elastic part 324, and can press the material at a high place into the relatively low and deep concave wrinkle area.

[0042] It should be understood that the second elastic portion 324 can be a spring, an elastic strip, an elastic rod, etc. Specifically, Figure 5 As shown, in one embodiment, the smoothing roller 323 is slidably connected to the fixed plate 322 through a slider 325, and the smoothing roller 323 and the slider 325 are rotatably connected. The second elastic portion 324 is an annular airbag fixedly mounted on the rotating shaft 321. The outer wall of the second elastic portion 324 is provided with a damping layer 326. The damping layer 326 fits the outer wall of the smoothing roller 323 and applies friction damping to hinder the rotation of the smoothing roller 323. By setting the second elastic part 324 as an annular airbag, when the amount of material pushed by the smoothing roller 323 increases, the smoothing roller 323 will squeeze the second elastic part 324, so that the pressure between the smoothing roller 323 and the second elastic part 324 increases. However, at this time, as the smoothing roller 323 shrinks toward the center of the fixed disk 322, the friction between the smoothing roller 323 and the packaging bag decreases. In order to still be able to drive the entire smoothing member 32 to rotate and push materials of different heights to move through different smoothing rollers 323, in this embodiment, a damping layer 326 is set between the second elastic part 324 and the smoothing roller 323. When the smoothing roller 323 shrinks toward the center of the fixed disk 322, the friction between the smoothing roller 323 and the damping layer 326 is reduced. As the pressure between the smoothing rollers 323 increases, the friction damping applied by the damping layer 326 to the smoothing roller 323 increases, so that the smoothing roller 323 can drive the entire smoothing member 32 to rotate relative to the packaging bag; at the same time, the smoothing roller 323 that can slide radially along the fixed disk 322 can cooperate with the rotating square roller. When the square roller rotates to drive the packaging bag close to the smoothing roller 323, the smoothing roller 323 can shrink toward the center of the fixed disk 322 to avoid pushing the entire smoothing member 32 and the rotating bracket 31 to rotate away from the square roller. When the square roller rotates to drive the packaging bag close to the smoothing roller 323, the smoothing roller 323 can move in the direction away from the center of the fixed disk 322, so that the smoothing roller 323 can adaptively push the material in the packaging bag to move.

[0043] In a second aspect, the present invention further provides a palletizing system comprising the above-mentioned material flattening device.

[0044] It should be understood that the palletizing system also includes a packaging machine, a conveyor belt, and a stacking robot, etc. This is an existing structure and will not be discussed in detail in this application.

[0045] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A material smoothing device, characterized in that: include: frame; A conveying component having a conveying structure for outputting materials; and The smoothing component includes a rotating bracket, a smoothing member and an elastic member. The rotating bracket can be rotatably connected to the frame. The smoothing member is connected to the rotating bracket and is arranged above the conveying structure. The elastic member connects the rotating bracket and the frame.

2. The material smoothing device according to claim 1, characterized in that: The elastic member includes a rod body, a first limiting portion and a first elastic portion. One end of the rod body is hinged to the frame, and the other end can slide through the rotating bracket. The first limiting portion is connected to the rod body and passes through one end of the rotating bracket. One end of the first elastic portion is connected to the rod body, and the other end abuts the rotating bracket, and pushes the rotating bracket to abut the first limiting portion.

3. The material smoothing device according to claim 2, characterized in that: The elastic member also includes a second limiting portion, which is connected to the rod body and is arranged on a side of the rotating bracket away from the first limiting portion. The second limiting portion is adjustable in the axial fixed position of the rod body. One end of the first elastic portion abuts the second limiting portion and abuts the rod body through the second limiting portion.

4. The material smoothing device according to claim 1, characterized in that: The smoothing member is rotatably connected to the rotating bracket.

5. The material smoothing device according to claim 4, characterized in that: The smoothing member is a roller rotatably connected to the rotating bracket.

6. The material smoothing device according to claim 4, characterized in that: The smoothing member includes a rotating shaft, two fixed disks and a plurality of smoothing rollers. The rotating shaft is rotatably connected to the rotating bracket. The two fixed disks are connected to the rotating shaft and are arranged at intervals. The plurality of smoothing rollers are arranged between the two fixed disks. The two ends of the smoothing rollers are respectively connected to the two fixed disks. The plurality of smoothing rollers are distributed at intervals along the circumference of the rotating shaft.

7. The material smoothing device according to claim 6, characterized in that: Both ends of the smoothing roller are rotatably connected to the two fixed disks respectively.

8. The material smoothing device according to claim 6, characterized in that: The conveying assembly is a square roller conveyor, and the conveying structure is a square roller.

9. The material smoothing device according to claim 8, characterized in that: The plurality of smoothing rollers are slidably connected to the fixed disk along the radial direction of the fixed disk; The smoothing member also includes a second elastic portion, which connects the smoothing roller and the fixed disk and is used to provide elastic force for the smoothing roller to reset after sliding radially along the fixed disk. The stiffness of the second elastic portion is less than that of the elastic member.

10. A palletizing system, characterized in that: The material flattening device comprises the material flattening device according to any one of claims 1 to 9.

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