Automatic stacking mechanism for multiple layers of paper stacks

Abstract

The utility model discloses an automatic stacking mechanism for multiple layers of paper stacks, which relates to the field of corrugated board production equipment and comprises a paper stack conveying device at the front section and a stacking device at the rear section, and the stacking device is positioned behind the paper stack conveying device and is used for receiving and stacking the paper stacks conveyed by the paper stack conveying device; an upper crenel and a crenel outlet are formed in the front end and the rear end of the paper stack conveying device respectively, and the conveying device conveys the paper stack from the upper crenel to the crenel outlet; the stacking device comprises a stack placing mechanism and a stack receiving platform, and the stack placing mechanism comprises a first conveying mechanism which is used for receiving paper stacks output by the paper stack conveying device and conveying the paper stacks to the position above the stack receiving platform; the stack receiving platform comprises a liftable frame and a second conveying mechanism, and the second conveying mechanism is fixed to the liftable frame and used for receiving the paper stacks released by the stack placing mechanism and outputting the stacked paper stacks; according to the utility model, through the cooperation of the paper stack conveying device and the stacking device, the conveying and stacking of multiple layers of paper stacks can be automatically realized, and the efficiency of stacking small stacks into large stacks is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of corrugated board production equipment, and particularly relates to a multi-layer paper stack automatic stacking mechanism. Background Art

[0002] In the production process of corrugated board, it is necessary to stack corrugated board or cartons into small stacks according to a set quantity or height, and then stack the small stacks into large stacks. Most of the current palletizing devices on the market can only stack one layer when stacking small stacks. For example, 20 sheets of cardboard are packed into one layer. When subsequent small stacks of cardboard are stacked onto a pallet to form a large stack, the efficiency is not high and needs to be optimized. Content of the Utility Model

[0003] Aiming at the deficiencies of the above-mentioned existing technologies, the utility model provides a multi-layer paper stack automatic stacking mechanism, which can automatically realize the stacking and conveying of multi-layer small stacks, and greatly improve the efficiency of stacking small stacks into large stacks.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A multi-layer paper stack automatic stacking mechanism includes a paper stack conveying device and a stacking device arranged in sequence. The stacking device is used to receive the paper stack conveyed by the paper stack conveying device and stack it.

[0006] The stacking device includes a stack placing mechanism and a stack receiving platform. The stack placing mechanism includes a first conveying mechanism arranged above the stack receiving platform. One end of the first conveying mechanism is close to the paper stack conveying device, and is used to receive the paper stack output by the paper stack conveying device and convey it above the stack receiving platform. Two parallel groups of the first conveying structures are provided, and the two groups of first conveying mechanisms can linearly move perpendicular to the conveying direction. When the two groups of first conveying mechanisms move relatively away from each other, the received paper stack is released.

[0007] The stack receiving platform includes a liftable frame and a second conveying mechanism. The second conveying mechanism is fixed on the liftable frame and is used to receive the paper stack released by the stack placing mechanism and output the stacked paper stack.

[0008] Further, an upper stack opening and a stack output opening are respectively arranged at the front end and the rear end of the paper stack conveying device. The conveying device conveys the paper stack from the upper stack opening to the stack output opening. A photoelectric sensor is arranged on the paper stack conveying device to detect the quantity of the paper stack on the paper stack conveying device.

[0009] Further, the paper stack conveying device includes a plurality of power rollers arranged side by side. The plurality of power rollers are driven by a motor and a double-row sprocket to rotate in the same direction to realize the front and rear conveying of the paper stack.

[0010] Furthermore, two left and right push plates are installed side by side above the power roller, and the two left and right push plates can move linearly perpendicular to the transmission direction of the power roller; the left and right push plates are driven by a second motor through a synchronous toothed belt to move left and right.

[0011] Furthermore, the paper stack conveying device also includes a positioning baffle, which is arranged at the stack outlet of the paper stack conveying device; the positioning baffle is lifted and lowered by a cylinder telescopic drive to facilitate aligning the paper stacks and ensure the stability of multiple paper stacks when they stay on the conveying device.

[0012] Furthermore, the stacking mechanism includes a stacking frame, and stacking slide rails are arranged in parallel on the front and rear sides of the stacking frame. Two movable brackets are installed side by side between the front and rear sides of the stacking frame, and the two ends of the two movable brackets are respectively slidably connected to the stacking slide rails, and the spacing between the two movable brackets can be adjusted by sliding.

[0013] Furthermore, the first transmission mechanism adopts a conveyor belt, and the conveyor belt is fixedly arranged on the movable bracket.

[0014] Furthermore, a lifting roller is provided on the side of the first conveying mechanism, and the axis of the lifting roller is parallel to the conveying direction of the first conveying mechanism. The lifting roller rises when the two first conveying mechanisms move away from each other to support the paper stack and separate the small paper stack from the surface of the conveying mechanism.

[0015] Furthermore, the second conveying mechanism is a stacking belt, and the stacking belt is fixedly arranged on the liftable frame.

[0016] Furthermore, a second photoelectric sensor is provided on the stacking platform for detecting the paper stack falling onto the second conveying mechanism.

[0017] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0018] 1. The utility model can automatically realize the stacking and conveying of multi-layer small stacks through the cooperation of the paper stack conveying device and the stacking device, thereby greatly improving the efficiency of stacking small stacks into large stacks.

[0019] 2. A liftable positioning baffle is provided at the outlet end of the paper stack conveying device of the utility model, which can assist in aligning the small paper stacks conveyed on the power roller, improve the neatness of the paper stacks during transportation, thereby ensuring the stacking efficiency of multi-layer paper stacks and improving the stacking effect.

[0020] 3. The utility model is provided with lifting rollers that cooperate with the first conveying mechanism, and can effectively reduce the relative sliding of the paper stack through the rotation and movement of the lifting rollers, ensuring that the paper stack can fall and be stacked to the set position, thereby improving the stacking quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings of the specification, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0022] Figure 1 It is the front view of the embodiment of the present utility model;

[0023] Figure 2 It is the top view of the embodiment of the present utility model;

[0024] Figure 3 It is the left view of the embodiment of the present utility model;

[0025] Figure 4 It is the right view of the embodiment of the present utility model.

[0026] In the figure: 1, paper stack conveying device; 2, stacking device; 3, control panel;

[0027] 101, conveying frame; 102, power roller; 103, left and right push plates; 104, first photoelectric sensor; 105, first motor; 106, double-row sprocket; 107, cross beam; 108, transverse slide rail; 109, positioning baffle; 110, upper stacking opening; 111, discharging opening; 112, second motor; 113, lifting cylinder;

[0028] 21, stack placing mechanism; 2101, stack placing frame; 2102, stack placing slide rail; 2103, left moving bracket; 2104, right moving bracket; 2105, first conveying mechanism; 2106, lifting roller;

[0029] 22, stack receiving platform; 2201, liftable frame; 2202, second conveying mechanism. Detailed implementation manners

[0030] It should be noted that the following detailed descriptions are all illustrative and are intended to provide a further description of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0032] Embodiment 1

[0033] In a typical embodiment of the present application, a multi-layer paper stack automatic stacking device is provided. As Figures 1-4 shown, it includes a paper stack conveying device 1 and a stacking device 2 arranged in sequence. Among them, the front end and the rear end of the paper stack conveying device 1 are respectively provided with a loading port 110 and an unloading port 111. The paper stack conveying device is used to convey small paper stacks from the loading port to the unloading port. The front end of the stacking device 2 is located behind the paper stack conveying device 1 and is used to receive the small paper stacks conveyed by the paper stack conveying device and complete the stacking process, that is, stack multiple small paper stacks into a large paper stack.

[0034] Among them, a first photoelectric sensor 104 is arranged on the paper stack conveying device 1 to detect the number of paper stacks entering the paper stack conveying device. Specifically, in this embodiment, the first photoelectric sensor 104 is arranged at the loading port 110. The first-entering paper stack is conveyed by the paper stack conveying device to the rear end of the paper stack conveying device and stays. When the first photoelectric sensor detects that the number of paper stacks entering the paper stack conveying device reaches the set number for stacking, and the left and right push plates push the paper stack to the set position, the paper stack conveying device drives the paper stack to output backward from the unloading port 111 to the stacking device.

[0035] Among them, the paper stack conveying device adopts power rollers and is driven by a first motor. The paper stack is conveyed back and forth by driving the rollers through double-row sprockets. Specifically, as Figure 1 、 3 shown, the paper stack conveying device includes a plurality of continuously arranged power rollers 102. The plurality of power rollers 102 are arranged in parallel in the front-back direction. The power rollers are driven by a first motor 105 and are provided with double-row sprockets 106 for transmission. The first motor 105 and the double-row sprockets 106 are arranged on the side of the axial direction of the power rollers to drive the plurality of power rollers 102 to roll forward and backward in the same direction, realizing the back-and-forth conveying of the paper stack.

[0036] Preferably, in this embodiment, left and right push plates that can move linearly left and right are arranged above the power rollers. There are two left and right push plates, which are used to push the paper stack entering the power rollers to the set position. Specifically, as Figure 1 、3 As shown in the figure, a cross beam 107 is arranged above the power roller 102. The cross beam is arranged perpendicular to the conveying direction of the paper stack on the power roller and is parallel to the axis of the power roller. Both ends of the cross beam 107 are fixedly connected to the conveying frame 101. A transverse slide rail 108 is arranged on the cross beam 107. The transverse slide rail 108 is slidably connected to the left and right push plates 103. In this embodiment, the transverse slide rail 108 is opened at the bottom of the cross beam 107. The tops of the left and right push plates 103 are slidably connected to the left and right push plates through sliders and can move linearly along the cross beam under the driving action of the second motor. The left and right push plates have a certain height and can push multiple paper stacks conveyed on the power roller left and right, adjust them to the set position, and then output them to the stacking device. Among them, the left and right push plates are driven by the second motor 112. The second motor 112 is installed on the cross beam. There are two second motors 112, which respectively drive the movement of the two left and right push plates. The second motor 112 drives the left and right push plates to move linearly left and right through a synchronous toothed belt. The transmission here can be realized by existing technical means.

[0037] In this embodiment, the paper stack conveying device further includes a positioning baffle 109. The positioning baffle 109 is arranged at the outlet end of the paper stack conveying device 1. The positioning baffle is a liftable structure and is arranged on a vertical guide rail. When the positioning baffle lifts and lowers, it slides up and down along the vertical guide rail, which is convenient for aligning the paper stacks and ensuring the stability of multiple paper stacks when staying on the conveying device. Among them, in this embodiment, the positioning baffle is realized by a lifting cylinder 113 and a slider drive. Of course, it can also be realized by other existing technologies, such as a motor and a slider guide rail mechanism, a gear rack mechanism, etc. When the paper stack enters the power roller, the positioning baffle is in the lowered state, blocking the outlet of the paper stack conveying device, so that the paper stack that enters first can stay at the positioning baffle. When the number of paper stacks entering the power roller reaches the set number, the left and right push plates push the paper stack to the set position, and at the same time align the paper stacks. Then the positioning baffle lifts, the left and right push plates move outwards, and the power roller drives the paper stack to be output to the outlet end.

[0038] In this embodiment, the stacking device 2 at the rear stage is composed of a stack placing mechanism 21 and a stack receiving platform 22. Among them, the stack placing mechanism 21 includes a first conveying mechanism 2105. The first conveying mechanism 2105 is arranged above the stack receiving platform 22. One end of the first conveying mechanism is close to the stack outlet, and is used to receive the paper stack output by the paper stack conveying device and convey it above the stack placing platform. Two groups of the first conveying structures 2105 are arranged side by side. The conveying directions of the two groups of first conveying mechanisms are the same, and they can move linearly perpendicular to the conveying direction. When the two groups of first conveying mechanisms move relatively away from each other, the paper stacks carried are released.

[0039] Specifically, as Figures 1-3 shown, the stack placing mechanism 21 includes a stack placing frame 2101. The stack placing frame 2101 is fixed above the liftable frame 2201. The front end of the stack placing frame is located behind the outlet end of the power roller.

[0040] On the front and rear sides of the stacking frame, there are stacking slide rails 2102 extending left and right in parallel. Between the front and rear sides of the stacking frame, two moving brackets arranged side by side are installed. As Figure 2 , 4 shown, they are the left moving bracket 2103 and the right moving bracket 2104 respectively. The structures of the two moving brackets are exactly the same. The two ends of the moving bracket are respectively slidably connected to the stacking slide rails 2102. The moving bracket is driven by a motor and a synchronous belt and can slide towards or away from each other along the stacking slide rails. The distance between the two moving brackets can be adjusted by sliding. Among them, the cooperation of the motor and the synchronous belt to drive the linear movement of the moving bracket is realized by existing technical means.

[0041] In this embodiment, the first conveying mechanism adopts a conveyor belt. There is a conveyor belt for front-back transmission on the stacking frame. The conveyor belt is driven by a first reduction motor and a first belt follower roller and can transmit the received paper stack backward to the required position.

[0042] In this embodiment, lifting rollers 2106 are arranged on the side of the conveyor belt. The axis of the lifting rollers 2106 is parallel to the conveying direction of the conveyor belt. The lifting rollers 2106 rise when the two sets of first conveying mechanisms move away from each other to support the paper stack and separate the small paper stack from the surface of the conveying mechanism. When the stacking mechanism stacks a paper stack, the lifting rollers are in the lowered state, and the roller surface is lower than the belt. After all the small paper stacks enter the stacking mechanism, the rollers lift, and the roller surface is higher than the belt to support the small paper stack. The left and right moving brackets move quickly in the opposite direction. When the distance between the left and right moving brackets is greater than the width of the paper stack, the paper stack falls onto the receiving stack platform, and then the left and right moving brackets return to the set position to continue stacking paper stacks.

[0043] At the same time, considering that during the horizontal movement, there may be sliding friction between the bottom surface of the paper stack and the supporting lifting rollers, resulting in the situation that the small paper stack moves towards one side with the moving bracket and the rollers, thus unable to ensure that the small paper stack accurately falls on the lower paper stack to complete stacking. Therefore, the lifting rollers are arranged such that when the two moving brackets and the first conveying mechanism move away from each other, the lifting rollers rotate along their own axes, and the linear velocity of any point on the outer circumferential side of the lifting rollers during rotation is equal to the horizontal translation speed of the conveying mechanism and the rollers. The specific driving method can refer to the public patent CN212221715, or be realized by other existing feasible technical means.

[0044] In this embodiment, the receiving stack platform 22 is arranged below the stacking mechanism 21 and is a liftable structure, including a liftable frame 2201 and a second conveying mechanism 2202. The second conveying mechanism 2202 is fixed on the liftable frame 2201 and is used to receive the paper stack released from the stacking mechanism and output the stacked paper stack.

[0045] Specifically, the second conveying mechanism adopts a stacking belt, which is fixedly arranged on a liftable frame; when the left and right moving brackets move relatively away from each other, the paper stack can fall from the conveying belt onto the stacking belt, and the liftable frame drives the stacking belt to descend a certain height, so that the next paper stack conveyed by the conveying belt can fall and be stacked on top of the original paper stack. Repeating this process, the automatic stacking of a set number of small paper stacks into a multi-layer paper stack can be completed, and the stacked multi-layer paper stack is output through the stacking belt, improving the efficiency for subsequent stacking into a large paper stack on the pallet.

[0046] Specifically, as shown in the figure, the stacking belt is driven by a second reduction motor and a second belt follower roller to realize the conveyance of the paper stack after stacking.

[0047] Meanwhile, in this embodiment, a third reduction motor is provided. The third reduction motor drives the liftable frame to lift and lower through a chain structure. The third reduction motor and the chain are installed on the side of the stacking platform, and the cooperation between the motor and the chain structure drives the liftable frame to be realized by existing technical means.

[0048] Preferably, in this embodiment, a second photoelectric sensor is arranged on the stacking platform 22 to detect whether a paper stack has fallen onto the stacking platform. Specifically, when the paper stack falls from the first conveying mechanism, after the second photoelectric sensor detects the paper stack, the stacking platform descends a set height to leave a top space for subsequent stacking; when the number of layers or height of the paper stack on the stacking platform reaches the set value, the stacking belt rotates to output the stacked multi-layer paper stack backward, and then returns to the set position to continue stacking.

[0049] It should be noted that in other embodiments, the conveying belt or the stacking belt can also be replaced by continuously arranged synchronously rotating conveying rollers, which can also achieve the purpose of conveying small paper stacks or large paper stacks. Similarly, the front-end paper stack conveying device that uses power rollers to convey the paper stack from the entrance to the rear-end exit can also be replaced by belt conveyance. The combination of specific implementation means can be selected according to actual needs.

[0050] In addition, as Figure 1 shown, a control panel is fixed on one side of the paper stack conveying device. The control panel is connected to the controller, and the controller is connected to each detection element and execution structure to realize the automatic stacking of multi-layer paper stacks. The control panel is used for parameter setting and inputting control instructions.

[0051] The working principle of this embodiment is as follows:

[0052] The automatic stacking equipment of this embodiment sorts and conveys a set number of small paper stacks to be stacked by the front-end paper stack conveying device, and the multi-layer stacking is completed by the rear-end stacking device.

[0053] The small paper stack enters the power rollers from the inlet end of the paper stack conveying device. Multiple power rollers rotate in the same direction to convey the paper stack backward. The first-entered paper stack stops at the positioning baffle at the rear end of the power rollers. When the photoelectric sensor detects that the number of paper stacks entering the paper stack conveying device reaches the set quantity, the power rollers stop rotating. The left and right push plates slide along the transverse slide rails to push the paper stack to the set position and align the paper stack at the same time. Then the positioning baffle rises, the left and right push plates move outward, and the power rollers drive the paper stack to output to the outlet end.

[0054] The paper stack output from the paper stack conveying device directly enters the conveying belt of the stacking mechanism. The stacking mechanism is in the stacking state. At this time, the lifting rollers on both sides of the conveying belt are in the lowered state, and the roller surfaces are lower than the belt. For small paper stacks of different specifications, stable support can be achieved by adjusting the distance between the two conveying belts. When the paper stack enters the conveying belt, the lifting rollers on both sides rise, and the roller surfaces are higher than the belt. The left moving bracket and the right moving bracket move quickly to both sides respectively. When the distance between the left and right moving brackets is greater than the width of the paper stack, the paper stack falls onto the receiving belt, and the left and right moving brackets return to the set position to continue stacking.

[0055] When the second photoelectric sensor detects that the paper stack has fallen onto the receiving belt, the liftable frame drives the receiving belt to descend, and the entire receiving platform descends by a set height to continue receiving the next paper stack that falls from the stacking mechanism. When the number of layers or the height of the paper stack on the receiving belt reaches the set value, the receiving belt rotates to output the paper stack backward, completing one palletizing, and then returns to the set position to continue receiving.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those of ordinary skill in the art should understand that the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic stacking mechanism for multi-layer paper stacks, characterized in that, It includes a paper stack conveying device and a stacking device which are arranged in sequence, and the stacking device is used to receive and stack the paper stacks conveyed by the paper stack conveying device; The stacking device comprises a stacking mechanism and a stacking platform, wherein the stacking mechanism comprises a first conveying mechanism arranged above the stacking platform, one end of the first conveying mechanism is close to the paper stack conveying device, and is used to receive the paper stack output by the paper stack conveying device and convey it to the top of the stacking platform; the first conveying structure is provided with two parallel groups, the two groups of first conveying mechanisms can move linearly perpendicular to the conveying direction, and the received paper stack is released when the two groups of first conveying mechanisms are relatively far away from each other; The stacking platform comprises a liftable frame and a second conveying mechanism, wherein the second conveying mechanism is fixed on the liftable frame and is used for receiving the paper stack released from the stacking mechanism and outputting the stacked paper stack.

2. The automatic multi-layer paper stack stacking mechanism according to claim 1, characterized in that, The paper stack conveying device comprises a plurality of power rollers arranged side by side, and the plurality of power rollers are driven by a motor and a double-row sprocket to rotate in the same direction.

3. The automatic multi-layer paper stack stacking mechanism according to claim 2, characterized in that, Two left and right push plates are installed side by side above the power roller, and the two left and right push plates can move linearly perpendicular to the transmission direction of the power roller.

4. A multi-layer paper stack automatic stacking mechanism according to claim 1, characterized in that, The front and rear ends of the paper stack conveying device are respectively provided with an upper stack opening and an outlet stack opening, and the conveying device conveys the paper stack from the upper stack opening to the outlet stack opening; a photoelectric sensor is arranged on the paper stack conveying device for detecting the number of paper stacks on the paper stack conveying device.

5. The automatic multi-layer paper stack stacking mechanism according to claim 4, characterized in that, The paper stack conveying device further comprises a positioning baffle, which is arranged at the stack outlet of the paper stack conveying device.

6. The automatic multi-layer paper stack stacking mechanism according to claim 1, characterized in that, The stacking mechanism comprises a stacking frame, the front and rear sides of the stacking frame are parallelly provided with stacking slide rails, two movable brackets arranged side by side are installed between the front and rear sides of the stacking frame, and the two ends of the two movable brackets are respectively slidably connected with the stacking slide rails.

7. The automatic multi-layer paper stack stacking mechanism according to claim 6, characterized in that, The first transmission mechanism adopts a conveying belt, and the conveying belt is fixedly arranged on the movable bracket.

8. The automatic multi-layer paper stack stacking mechanism according to claim 1, characterized in that, A lifting roller is arranged on the side of the first conveying mechanism, and the axis of the lifting roller is parallel to the conveying direction of the first conveying mechanism.

9. The automatic multi-layer paper stack stacking mechanism according to claim 1, characterized in that, The second conveying mechanism is a stacking belt, and the stacking belt is fixedly arranged on the liftable frame.

10. A multi-layer paper stack automatic stacking mechanism as described in claim 1, characterized in that, A second photoelectric sensor is disposed on the stacking platform.

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