A packaging box stacking device

Abstract

This invention relates to the field of packaging equipment, and more particularly to a packaging box stacking device, comprising fixed plates symmetrically arranged on both sides of a frame. A positioning cylinder is fixed to one of the fixed plates, and a positioning plate is fixed to the output end of the positioning cylinder. A limit cylinder is also fixed to the fixed plate, and a limit plate is fixed to the end of the piston rod of the limit cylinder. A slider slidably connected to the frame is also provided on the frame between the two fixed plates. A lifting plate is fixed above the slider. A lifting motor is also fixed to the frame, and a connecting plate is fixed to the output end of the lifting motor. A push rod is fixed to the bottom of the slider, and the connecting plate connects to the push rod via a push plate. Support plates are symmetrically arranged on both sides above the lifting plate, and multiple support rods are fixed to the support plates. This device can automatically stack multiple packaging boxes into multiple layers, greatly improving the stacking efficiency of packaging boxes.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment, and more particularly to a packaging box stacking device. Background Technology

[0002] Nowadays, after production is completed, various products often need to be protected by packaging structures (such as cardboard boxes) to avoid damage during transportation. On various cardboard box packaging production lines, the cardboard boxes packaged by the packaging machine need to be transported to the carton sealing process in an arranged manner so that the cardboard boxes can be put into outer cartons and sealed before leaving the factory.

[0003] Patent application number CN201710519102.8 discloses a fully automatic packaging box stacking device, including a controller, a robotic arm, a vacuum suction cup, and a pressure sensor for detecting the vacuum degree of the vacuum suction cup. The vacuum suction cup is mounted on the robotic arm, and the pressure sensor is mounted inside the vacuum suction cup. The controller is connected to the robotic arm, the vacuum suction cup, and the pressure sensor respectively. The fully automatic packaging box stacking device is characterized by further including a limiting device, which includes a base plate and n limiting blocks, where n is an integer greater than or equal to 3. The base plate is provided with through holes, and the n limiting blocks are distributed around the through holes. The front end face of the limiting blocks is an arc-shaped surface, and the distance between the arc-shaped surface and the center of the through hole gradually decreases from top to bottom. During operation, the vacuum suction cup controlled by the controller adheres to the bottom of the packaging box. The robotic arm moves the packaging box to the top of the stacking area, with the opening of the packaging box facing down. The vacuum suction cup controlled by the controller releases its grip on the packaging box, and the packaging box falls between n limit blocks, realizing the stacking of the packaging boxes. However, this method of picking up packaging boxes by the vacuum suction cup of the robotic arm can only grab one layer of packaging boxes at a time for stacking. When multiple layers of packaging boxes need to be stacked, the robotic arm needs to grab, transfer, and place multiple layers of packaging boxes to achieve the stacking of multiple layers of packaging boxes, which is inefficient.

[0004] This invention was developed to address the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a packaging box stacking device.

[0006] This invention can be achieved through the following technical solutions:

[0007] This invention discloses a packaging box stacking device, comprising fixed plates symmetrically arranged on both sides of a frame. A positioning cylinder is fixed on one of the fixed plates, and a positioning plate is fixed to the output end of the positioning cylinder. A limit cylinder is also fixed on the fixed plate, and a limit plate is fixed to the end of the piston rod of the limit cylinder. A slider is also provided on the frame between the two fixed plates and is slidably connected to the frame. A lifting plate is fixed above the slider. A lifting motor is also fixed on the frame, and a connecting plate is fixed to the output end of the lifting motor. A push rod is fixed to the bottom of the slider, and the connecting plate is connected to the push rod through a push plate. Support plates are symmetrically arranged on both sides above the lifting plate, and multiple support rods are fixed on the support plates. The support rods pass through the fixed plates at corresponding positions and are slidably connected to the fixed plates. A limit block is fixed to the end of each support rod, and a limit spring is fixed between each limit block and the fixed plate.

[0008] Preferably, each of the fixed plates has multiple sliding rods fixed to it, and each fixed plate has a sliding plate on one side. The sliding rods pass through the corresponding sliding plates and are slidably connected to them. Each sliding plate has a pressure plate fixed to it, and each sliding rod on the upper and lower sides of the sliding plate has a positioning spring. When the packaging box rises, the pressure plates press down on the top two sides of the packaging box to prevent the upper packaging box from vibrating and shifting due to the lower packaging box rising, thus ensuring that the packaging boxes are stacked neatly.

[0009] Preferably, one of the fixing plates is slidably connected to the frame, a threaded tube is fixed on the fixing plate, and a screw that is rotatably connected to the frame is also provided on the frame, the screw passing through the threaded tube and threadedly connected to the threaded tube.

[0010] Preferably, a conveyor belt is also installed on the frame.

[0011] Compared with existing technologies, the present invention has the following advantages:

[0012] This device can automatically stack multiple packaging boxes into multiple layers without the need for multiple gripping, transfer, and placement by a robotic arm, greatly improving the stacking efficiency of packaging boxes. Attached Figure Description

[0013] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure from another angle of the present invention;

[0016] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 4 This is a structural schematic diagram of the conveyor belt position according to the present invention;

[0018] In the diagram: 1. Frame; 2. Conveyor belt; 3. Packaging box stacking device; 301. Lower pressure plate; 302. Fixing plate; 303. Positioning cylinder; 304. Positioning plate; 305. Limiting cylinder; 306. Limiting plate; 307. Lifting motor; 308. Connecting plate; 309. Push plate; 310. Sliding block; 311. Push rod; 312. Lifting plate; 313. Support plate; 314. Support rod; 315. Limiting block; 316. Slide rod; 317. Slide plate; 318. Positioning spring; 319. Threaded pipe; 320. Screw. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

[0020] Example 1:

[0021] like Figures 1 to 4 As shown, this embodiment discloses a packaging box stacking device, including fixed plates 302 symmetrically arranged on both sides of a frame 1. A positioning cylinder 303 is fixed on one of the fixed plates 302, and a positioning plate 304 is fixed to the output end of the positioning cylinder 303. A limit cylinder 305 is also fixed on the fixed plate 302, and a limit plate 306 is fixed to the end of the piston rod of the limit cylinder 305. A slider 310 slidably connected to the frame 1 is also provided on the frame 1 between the two fixed plates 302. A lifting plate 312 is fixed above the slider 310. A lifting motor 307 is also fixed on the frame 1, and the lifting motor 307 outputs... A connecting plate 308 is fixed at one end, and a push rod 311 is fixed at the bottom of the slider 310. The connecting plate 308 is connected to the push rod 311 through a push plate 309. One end of the push plate 309 is rotatably connected to the connecting plate 308, and the other end of the push plate 309 is rotatably connected to the push rod 311. Support plates 313 are symmetrically arranged on both sides above the lifting plate 312. Multiple support rods 314 are fixed on the support plates 313. The support rods 314 pass through the corresponding fixed plates 302 and are slidably connected to the fixed plates 302. Limit blocks 315 are fixed at the ends of the support rods 314. Limit springs are fixed between the limit blocks 315 and the fixed plates 302.

[0022] The fixed plate 302 has multiple sliding rods 316 fixed on it, and a sliding plate 317 is provided on one side of the fixed plate 302. The sliding rods 316 pass through the corresponding sliding plates 317 and are slidably connected to the sliding plates 317. A pressure plate 301 is fixed on each sliding plate 317, and positioning springs 318 are provided on the sliding rods 316 on both the upper and lower sides of the sliding plate 317. When the packaging box rises, the pressure plate 301 presses down on both sides of the top of the packaging box to prevent the packaging box above from vibrating and misaligning when the packaging box below rises, thus ensuring that the packaging boxes are stacked neatly.

[0023] One of the fixing plates 302 is slidably connected to the frame 1. A threaded tube 319 is fixed on the fixing plate 302. The frame 1 is also provided with a screw 320 that is rotatably connected to the frame 1. The screw 320 passes through the threaded tube 319 and is threadedly connected to the threaded tube 319.

[0024] Example 2:

[0025] This embodiment discloses a packaging box stacking device. Based on the structure and principle of embodiment 1, the frame 1 of this embodiment is also equipped with a conveyor belt 2.

[0026] Working principle: After the product is placed into the packaging box, the packaging box is transported forward by the conveyor belt 2. The limit cylinder 305 is activated, and the piston rod of the limit cylinder 305 extends, moving the limit plate 306 between the two fixed plates 302. The packaging box moves onto the lifting plate 312, with the outermost packaging box blocked by the limit plate 306. When a specified number of packaging boxes reach the lifting plate 312, the positioning cylinder 303 is activated, and the piston rod of the positioning cylinder 303 extends, moving the positioning plate 304 between the two fixed plates 302. Between positions 2 and 3, the positioning plate 304 prevents the packaging boxes from reaching the lifting plate 312. After a specified number of packaging boxes reach the lifting plate 312, the lifting motor 307 starts, driving the connecting plate 308 to rotate. The connecting plate 308 pushes the slider 310 upward through the push plate 309, causing the lifting plate 312 to move upward. The packaging boxes on the lifting plate 312 move upward with the lifting plate 312. Because the lower end of the support plate 313 has a sloping structure, the packaging boxes move upward and interact with the support plates 312 on both sides. After contact, the support plate 313 is pushed to move closer to the corresponding fixed plate 302. When the packaging box reaches above the support plate 313, the limit spring pulls the limit block 315 to move, and the support plate 313 returns to the initial position. The lifting motor 307 drives the connecting plate 308 to continue rotating, and the lifting plate 312 descends. The packaging box descends with the lifting plate 312. Due to the obstruction of the support plate 313, the packaging box stays on the support plate 313. The positioning cylinder 303 is activated, and the piston rod on the positioning cylinder 303 is shortened. The positioning plate 304 returns to the initial position, and the conveyor belt 2 continues to run. The packaging box continues to reach above the lifting plate 312. When a specified number of packaging boxes reach the lifting plate 312 again, the positioning cylinder 303 is activated again, and the positioning plate 304 once again obstructs the packaging box from reaching the position of the lifting plate 312. The lifting motor 307 drives the lifting plate 312 to rise again, and the packaging boxes on the lifting plate 312 reach above the support plate 313 again and are neatly stacked with the previous packaging boxes. The cycle continues.

[0027] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be considered within the scope of protection of the present invention.

Claims

1. A packaging box stacking device, characterized in that, The device includes symmetrically arranged fixed plates on both sides of a frame. A positioning cylinder is fixed on one of the fixed plates, and a positioning plate is fixed to the output end of the positioning cylinder. A limit cylinder is also fixed on the fixed plate, and a limit plate is fixed to the end of the piston rod of the limit cylinder. A slider is also provided on the frame between the two fixed plates and is slidably connected to the frame. A lifting plate is fixed above the slider. A lifting motor is also fixed on the frame, and a connecting plate is fixed to the output end of the lifting motor. A push rod is fixed to the bottom of the slider, and the connecting plate is connected to the push rod through a push plate. Support plates are symmetrically arranged on both sides above the lifting plate. Multiple support rods are fixed on the support plates. The support rods pass through the fixed plates at corresponding positions and are slidably connected to the fixed plates. A limit block is fixed to the end of each support rod, and a limit spring is fixed between each limit block and the fixed plate.

2. The package stacker apparatus of claim 1, wherein: Multiple sliding rods are fixed to each of the fixed plates. A sliding plate is provided on one side of each fixed plate. The sliding rods pass through the corresponding sliding plates and are slidably connected to the sliding plates. A pressure plate is fixed on each sliding plate. Positioning springs are provided on the sliding rods on the upper and lower sides of each sliding plate.

3. The package stacker apparatus of claim 1, wherein: One of the fixed plates is slidably connected to the frame, and a threaded tube is fixed on the fixed plate. The frame is also provided with a screw that is rotatably connected to the frame. The screw passes through the threaded tube and is threadedly connected to the threaded tube.

4. The package stacker apparatus of claim 1, wherein: A conveyor belt is also installed on the frame.

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