Carton opening device

Abstract

The utility model provides a carton opening device which comprises a machine frame and a conveying device, the conveying device is arranged on the machine frame, a supporting device is arranged on the machine frame, a carton opening limiting mechanism is arranged on the supporting device, and the carton opening limiting mechanism comprises a carton opening mechanism and a limiting mechanism. The box opening mechanism comprises a bottom adsorption device and a turnover box opening adsorption device, the bottom adsorption device is arranged on the supporting device, and the turnover box opening adsorption device is arranged on the bottom adsorption device; the limiting mechanism comprises a limiting support, a limiting drive and a limiting rod, the limiting support is arranged on the bottom adsorption device or the turnover box opening device, the limiting drive is arranged on the limiting support, and the limiting rod is arranged on an output shaft of the limiting drive and can stretch out and draw back in the direction perpendicular to the conveying direction of the conveying device. The utility model has the advantages of high efficiency, good stability and long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of carton opening devices, and particularly relates to a carton opening device. Background Art

[0002] With the continuous development of social economy, in order to improve production efficiency, automatic carton openers are usually used. Automatic carton openers can automatically complete steps such as opening, forming, and bottom folding of the carton. After using an automatic carton opener, workers no longer need to perform repetitive carton opening operations for a long time, which can greatly reduce labor intensity. Moreover, it can replace multiple workers in carton opening operations, thus saving a large amount of human resources. The use of automatic carton openers ensures the opening quality and consistency of each carton and avoids quality problems caused by improper manual operation.

[0003] For example, in the patent document with the patent application number 202322979224.9 and the publication date of July 26, 2024, an opening and bottom sealing device of a horizontal carton opener is disclosed, which includes a frame. A material channel, an opening mechanism, an inner bottom cover folding mechanism, an outer bottom cover folding mechanism, a tape sticking mechanism, and a conveying mechanism are arranged on the frame. The inner bottom cover folding mechanism, the outer bottom cover folding mechanism, and the tape sticking mechanism are arranged in sequence from left to right along the conveying direction of the conveying mechanism and are on the side facing the bottom of the carton. A glue spraying mechanism is arranged on the frame, and the glue spraying mechanism is located between the inner bottom cover folding mechanism and the outer bottom cover folding mechanism. When the conveying mechanism conveys the carton from the position corresponding to the inner bottom cover folding mechanism to the position corresponding to the outer bottom cover folding mechanism, the glue spraying mechanism sprays glue on the outer surface of the inner bottom cover of the folded carton for the inner folding of the outer bottom cover of the carton to be adhesively fixed to the inner bottom cover. By adding a glue spraying mechanism to apply glue to the inner bottom cover of the carton, the outer bottom cover can be adhesively fixed to the inner bottom cover when it is folded inward, making the bottom of the sealed carton more stable.

[0004] In the above literature, when the carton reaches the opening position, the opening mechanism is used to lift it. The opening mechanism is provided with an upper suction cup and a lower suction cup. When the upper suction cup and the lower suction cup lift the carton, there is no limit on the left and right sides of the carton, which is likely to cause tilting or lateral displacement. This will not only affect the accuracy of opening the carton, but also affect the entry of the carton into the next process, thus affecting the continuity and efficiency of the production line. Moreover, the instability during the carton opening process may cause the product to be squeezed or collided during the boxing process, affecting the quality of the final product. Summary of the Invention

[0005] The utility model provides a carton opening device with high efficiency and good stability.

[0006] To achieve the above object, the technical solution of the present utility model is: a carton opening device, including a frame and a conveying device. The conveying device is arranged on the frame, a supporting device is arranged on the frame, and an opening limiting mechanism is arranged on the supporting device. The opening limiting mechanism includes an opening mechanism and a limiting mechanism. The opening mechanism includes a bottom adsorption device and a flipping and opening adsorption device. The bottom adsorption device is arranged on the supporting device, and the flipping and opening adsorption device is arranged on the bottom adsorption device; the limiting mechanism includes a limiting bracket, a limiting drive, and a limiting rod. The limiting bracket is arranged on the bottom adsorption device or the flipping and opening device, the limiting drive is arranged on the limiting bracket, and the limiting rod is arranged on the output shaft of the limiting drive. The limiting rod can stretch along a direction perpendicular to the conveying direction of the conveying device.

[0007] With the above settings, the unopened carton is conveyed by the conveying device to the opening limiting mechanism, then one side of the carton is adsorbed by the bottom adsorption device, an adjacent side is adsorbed by the flipping and opening adsorption device, and the carton is opened by the flipping of the flipping and opening adsorption device. When the carton is opened to a position where the limiting rod can extend into the carton, the limiting drive drives the limiting rod to extend into the carton. As the carton is continuously opened by the flipping and opening adsorption device, the limiting rod contacts the inner wall of the carton, preventing the carton from tilting or moving laterally, thus ensuring the carton remains stable during the opening process and completing the opening and shaping of the carton. After the carton is completely opened and shaped, the limiting drive retracts the limiting rod from the inside of the carton, and then the opened carton is conveyed forward by the conveying device. Therefore, the opening efficiency is high and the stability is good.

[0008] Further, the opening limiting mechanism is slidably arranged on the supporting device, and the sliding direction of the opening limiting mechanism is the same as the conveying direction of the conveying device. With this structure, during the opening process, the conveying device continuously conveys the carton, and the opening limiting mechanism and the carton move together. Therefore, while the carton is being opened, it is also being conveyed by the conveying device, further improving the opening efficiency and conveying efficiency of the carton.

[0009] Further, a driving component is arranged between the supporting device and the opening limiting mechanism. In this way, the opening limiting mechanism can be driven by the driving component.

[0010] Further, the driving assembly includes a driving motor, a driving sprocket, a driven sprocket, a chain, a driving rod, a driving wheel and a driving plate; the driving motor is arranged on the supporting device, the driving sprocket is rotatably arranged on the supporting device, the driven sprocket is rotatably arranged on the supporting device, the chain is sleeved between the driving sprocket and the driven sprocket, a driving rod is arranged on the chain, a driving wheel is rotatably arranged on the driving rod, the driving plate is arranged on the case-opening limiting mechanism, a strip-shaped groove is arranged on the driving plate, and the driving wheel is located in the strip-shaped groove. In this structure, when the driving motor is started, the driving motor drives the driving sprocket to rotate, the driving sprocket drives the chain to move, the chain drives the driving rod to move, and the driving rod drives the driving wheel to move. Since the driving wheel is located in the strip-shaped groove, the case-opening limiting mechanism can be driven to move on the supporting device. And due to the arrangement of the strip-shaped groove and the driving wheel, on the one hand, rolling friction can be formed between the driving wheel and the inner wall of the strip-shaped groove, thereby reducing wear, and on the other hand, the strip-shaped groove provides a large floating space for the driving wheel, so it is not easy to jam.

[0011] Further, the bottom adsorption device includes a first bracket, a linear drive, a bottom suction cup seat and a bottom suction cup. The first bracket is arranged on the supporting device, the linear drive is arranged on the first bracket, the bottom suction cup seat is arranged on the output shaft of the linear drive, and the bottom suction cup is arranged on the bottom suction cup seat. In this structure, the bottom suction cup seat can be driven to move up and down through the linear drive, so as to drive the bottom suction cup to move up and down. When it is necessary to adsorb one side of the carton, the linear drive drives the bottom suction cup to move upward to realize the adsorption of one side of the carton. If it is not necessary to adsorb one side of the carton, the linear drive drives the bottom suction cup to move downward to avoid interference between the bottom suction cup and the subsequent conveyed cartons.

[0012] Further, the first bracket includes a bottom plate and a linear drive seat. The bottom plate is arranged on the supporting device, a horizontal first waist-shaped groove is arranged on the linear drive seat, and a bolt passes through the first waist-shaped groove and is connected to the linear drive; a second waist-shaped groove is arranged on the bottom suction cup seat, and the bottom suction cup is slidably arranged on the second waist-shaped groove. Due to the arrangement of the first waist-shaped groove, it is convenient to adjust the position of the linear drive. Due to the arrangement of the second waist-shaped groove, it is convenient to adjust the position of the bottom suction cup.

[0013] Further, the flipping and case-opening adsorption device includes a second bracket, a rotary drive, a rotary frame, a case-opening suction cup seat and a case-opening suction cup. The second bracket is arranged on the bottom adsorption device, the rotary drive is installed on the second bracket, the rotary frame is arranged on the output shaft of the rotary drive, the case-opening suction cup seat is arranged on the rotary frame, and the case-opening suction cup is arranged on the case-opening suction cup seat. In this structure, when the rotary drive works, it drives the rotary frame to rotate, thereby driving the case-opening suction cup to swing.

[0014] Further, a third kidney-shaped groove extending horizontally is provided on the rotary rack, and the unpacking suction cup seat is slidably arranged on the third kidney-shaped groove. Due to the provision of the third kidney-shaped groove, it is convenient to adjust the position of the unpacking suction cup.

[0015] Further, the conveying device includes a conveying drive, a conveying driving roller, a conveying driven roller and a conveyor belt. The conveying drive is arranged on the frame, the conveying driving roller is arranged at one end of the frame, the output shaft of the conveying drive is connected to the conveying driving roller, the conveying driven roller is arranged at the other end of the frame, and the conveyor belt is sleeved between the conveying driving roller and the conveying driven roller. With this structure, the conveying drive drives the conveying driving roller to rotate, and the conveying driving roller drives the conveyor belt to move, thereby realizing the conveyance of the carton.

[0016] Further, two or more groups of driving blocks are arranged on the conveyor belt, and a space is formed between adjacent groups of driving blocks. With this structure, by driving the carton with the driving blocks, the conveyance of the carton is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model.

[0018] Figure 2 is Figure 1 the enlarged view at A in

[0019] Figure 3 is another schematic structural diagram of the conveying device.

[0020] Figure 4 is Figure 1 the enlarged view of B in

[0021] Figure 5 is the downward schematic diagram of the present utility model.

[0022] Figure 6 is Figure 5 the enlarged view at C in

[0023] Figure 7 is the schematic diagram of the supporting device and the unpacking limiting mechanism in the present utility model.

[0024] Figure 8 is the schematic diagram of the carton not being fully opened during the unpacking process of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described in detail below in conjunction with the drawings and the specific embodiments.

[0026] Embodiment 1.

[0027] As Figures 1-6 shown, a carton unpacking device includes a frame 1, a conveying device and an unpacking limiting mechanism.

[0028] In this embodiment, the direction of arrow Y is the conveying direction of the carton.

[0029] As Figure 1 and Figure 2 shown, the frame 1 includes a chassis (not shown in the figure), side plates 11, support bars 12 and connecting shafts 13. There are two side plates 11, which are connected to the chassis. A conveying groove 14 is formed between the two side plates. The support bars 12 are located in the conveying groove 14, and there are gaps between adjacent support bars 12. The connecting shafts 13 pass through the side plates 11 and the support bars 12 to connect the support bars.

[0030] The conveying device includes a conveying drive, a conveying driving shaft 21, a conveying driven shaft 22, a conveying driving sprocket 23, a conveying driven sprocket 24 and a conveying chain 25. The conveying drive is a servo motor or other rotary drive. The conveying drive is installed on the frame 1. The conveying drive drives the conveying driving shaft 21 to rotate. The conveying driving shaft 21 is installed on one end of the side plate 11 through a bearing, and the conveying driving shaft 21 rotates through the support bar 12. The conveying driven shaft 22 is installed on the other end of the side plate 11 through a bearing, and the conveying driven shaft 22 rotates through the support bar 12. One or more conveying driving sprockets 23 are installed on the conveying driving shaft 21. The same number of conveying driven sprockets 24 as the conveying driving sprockets are installed on the conveying driven shaft 22. A conveying chain 25 is sleeved between the conveying driving sprocket 23 and the conveying driven sprocket 24 corresponding to the conveying direction. The conveying chain 25 is located in the gap and the gap between the side plate and the support bar. Two or more groups of driving blocks 26 are arranged on the conveying chain 25, and a space is formed between adjacent groups of driving blocks 26. In the direction perpendicular to the conveying direction, the driving blocks 26 of the same group are on the same straight line. When the carton enters between adjacent driving blocks 26, the conveying drive is started. The conveying drive drives the conveying chain 25 to move through the conveying driving shaft 21 and the conveying driving sprocket 23, thereby driving the driving blocks 26 to move and conveying the carton.

[0031] As another structure of the conveying device, as Figure 3 shown, the conveying device includes a conveying drive, a conveying driving roller 201, a conveying driven roller 202 and a conveyor belt 203. The conveying drive is a servo motor or other rotary drive. The conveying drive is arranged on the frame 1. The conveying driving roller 201 is arranged at one end of the frame 1 through a bearing, and the output shaft of the conveying drive is connected to the conveying driving roller 201. The conveying driven roller 202 is arranged at the other end of the frame 1 through a bearing. The conveyor belt 203 is sleeved between the conveying driving roller 201 and the conveying driven roller 202; Two or more groups of driving blocks 26 are arranged on the conveyor belt 203, and a space 27 is formed between adjacent groups of driving blocks. When the carton enters the space 27 between adjacent driving blocks 26, the conveying drive is started. The conveying drive drives the conveyor belt 203 to move through the conveying driving roller 201, thereby driving the driving blocks 26 to move and conveying the carton.

[0032] A support device 3 is provided on the rack 1. In this example, the support device 3 is a support frame. One end of the support device 3 extends below the side plate 11, and the other end of the support device 3 protrudes from one side of the side plate.

[0033] An unpacking limiting mechanism is slidably provided on the support device 3. The unpacking limiting mechanism includes an unpacking mechanism 4 and a limiting mechanism 5.

[0034] The unpacking mechanism 4 includes a bottom adsorption device 41 and a flipping unpacking adsorption device 42.

[0035] As Figure 1 、 Figures 4 to 7 shown, a guide rail 31 is provided on the support device 3. The guide rail 31 is arranged along the conveying direction of the carton. The bottom adsorption device 41 includes a first bracket 411, a linear drive 412, a bottom suction cup seat 413 and a bottom suction cup 414. The first bracket 411 includes a bottom plate 4111 and a linear drive seat 4112. The bottom plate 4111 is slidably arranged on the guide rail 31 through a slider. The linear drive seat 4112 is installed on the bottom plate 4111. A transverse first waist-shaped groove 41121 is provided on the linear drive seat. A bolt passes through the first waist-shaped groove 41121 and is connected to the linear drive 412. In this way, it is convenient to adjust the position of the linear drive. A second waist-shaped groove 4131 is provided on the bottom suction cup seat 413. The bottom suction cup is slidably arranged on the second waist-shaped groove 4131. In this way, it is convenient to adjust the position of the bottom suction cup 414. In this embodiment, the linear drive 412 is a cylinder. During operation, when the linear drive 412 works, it can drive the bottom suction cup seat 413 to move up and down, thereby driving the bottom suction cup 414 to move up and down. When it is necessary to adsorb one side of the carton, the bottom suction cup moves upward. When it is necessary to release the carton, the bottom suction cup moves downward.

[0036] The described flipping and unpacking suction device 42 includes a second bracket 421, a rotation drive 422, a rotating frame 423, an unpacking suction cup seat 424, and an unpacking suction cup 425. The second bracket 421 is arranged on the bottom plate 4111. The rotation drive 422 is a servo motor, and the rotation drive 422 is installed on the upper end of the second bracket 421. The rotating frame 423 is arranged on the output shaft of the rotation drive. The rotating frame 423 is L-shaped. The unpacking suction cup seat 424 is arranged on the rotating frame 423, and the unpacking suction cup 425 is arranged on the unpacking suction cup seat 424. A laterally extending third kidney-shaped groove 4231 is provided on the rotating frame 423, and the unpacking suction cup seat is slidably arranged on the third kidney-shaped groove 4231. In this way, it is convenient to adjust the position of the unpacking suction cup. When the rotation drive 422 operates, the rotation drive 422 drives the rotating frame 423 to rotate, the rotating frame 423 drives the unpacking suction cup seat 424 to swing, and the unpacking suction cup seat 424 drives the unpacking suction cup 425 to swing. Taking the midline of the unpacking suction cup as the axis, the axis of the unpacking suction cup can change from the vertical direction to the horizontal direction, thus realizing the unpacking action.

[0037] The limit mechanism 5 includes a limit bracket 51, a limit drive 52, and a limit rod 53. The limit bracket is arranged on the second bracket 421. The limit bracket 51 is L-shaped. The limit drive is a cylinder. The limit drive 52 is arranged on the limit bracket 51, and the limit rod 53 is arranged on the output shaft of the limit drive. The limit rod 53 can expand and contract along a direction perpendicular to the conveying direction of the conveying device.

[0038] As Figure 4 and Figure 7 As shown, a drive assembly 6 is arranged between the support device and the unpacking limit mechanism. The described drive assembly 6 includes a drive motor, a driving shaft 61, a driven shaft 62, a driving sprocket 63, a driven sprocket 64, a chain 65, a drive rod 66, a drive wheel 67, and a drive plate 68. The drive motor is arranged on the support device 3. The driving shaft 61 is installed on the support device 3 through a bearing. The driven shaft 62 is installed on the support device 3 through a bearing. The driving sprocket 63 is installed on the driving shaft 61, and the driven sprocket 64 is installed on the driven shaft 62. The chain 65 is sleeved between the driving sprocket 63 and the driven sprocket 64. A drive rod 66 is arranged on the chain 65. The drive wheel 67 is rotatably arranged on the drive rod 66. The drive plate 68 is arranged on the bottom plate 4111. A strip-shaped groove 681 is arranged on the drive plate 68. The drive wheel 67 is located in the strip-shaped groove 681. When the drive motor is started, the drive motor drives the driving sprocket to rotate. The driving sprocket drives the chain to move. The chain drives the drive rod to move. The drive rod drives the drive wheel to move. Since the drive wheel is located in the strip-shaped groove, it can drive the unpacking limit mechanism to move on the support device. And because of the arrangement of the strip-shaped groove and the drive wheel, on the one hand, the drive wheel and the inner wall of the strip-shaped groove can form rolling friction, thus reducing wear. On the other hand, the strip-shaped groove gives the drive wheel a large floating space, so it is not easy to get stuck.

[0039] In this embodiment, as Figure 8 shown, the unopened carton is conveyed by the conveying device to the carton-opening limiting mechanism, and then one side 81 of the carton is adsorbed by the bottom adsorption device, and an adjacent side 82 is adsorbed by the flipping carton-opening adsorption device. The carton is opened by the flipping of the flipping carton-opening adsorption device. When the carton is opened to the extent that the limiting rod can extend into the carton, the limiting rod is driven by the limiting drive to extend into the carton. As the carton is continuously opened by the flipping carton-opening adsorption device, the limiting rod contacts the inner wall of the carton, preventing the carton from tilting or moving laterally, thus ensuring the carton remains stable during the opening process and completing the opening and shaping of the carton. After the carton is completely opened and shaped, the limiting rod is retracted from the inside of the carton by the limiting drive, and then the opened carton is conveyed forward by the conveying device. Therefore, the efficiency of opening the carton is high and the stability is good.

[0040] During the carton-opening process, the conveying device continuously conveys the carton, and the carton-opening limiting mechanism and the carton move together under the action of the driving component. Therefore, while the carton is being opened, it is conveyed by the conveying device, further improving the carton-opening efficiency and conveying efficiency.

[0041] Embodiment 2.

[0042] Compared with Embodiment 1, the bottom plate 4111 is directly fixed on the supporting device and does not require a driving component. During the carton-opening process, the conveying device does not move. After the carton-opening is completed, the conveying device drives the carton to move forward.

Claims

1. A carton opening device, comprising a frame and a conveying device, the conveying device is arranged on the frame, and is characterized in that: A support device is provided on the rack, and an unpacking limiting mechanism is provided on the support device. The unpacking limiting mechanism includes an unpacking mechanism and a limiting mechanism. The unpacking mechanism includes a bottom adsorption device and a flipping unpacking adsorption device. The bottom adsorption device is provided on the support device, and the flipping unpacking adsorption device is provided on the bottom adsorption device. The limiting mechanism includes a limiting bracket, a limiting drive, and a limiting rod. The limiting bracket is provided on the bottom adsorption device or the flipping unpacking device. The limiting drive is provided on the limiting bracket, and the limiting rod is provided on the output shaft of the limiting drive. The limiting rod can extend and retract in a direction perpendicular to the conveying direction of the conveying device.

2. The carton opening device according to claim 1, wherein: The unpacking limiting mechanism is slidably provided on the support device, and the sliding direction of the unpacking limiting mechanism is the same as the conveying direction of the conveying device.

3. The carton opening device according to claim 2, characterized in that: A driving component is provided between the support device and the unpacking limiting mechanism.

4. The carton unpacking device according to claim 3, characterized in that: The driving component includes a driving motor, a driving sprocket, a driven sprocket, a chain, a driving rod, a driving wheel, and a driving plate. The driving motor is provided on the support device. The driving sprocket is rotatably provided on the support device. The driven sprocket is rotatably provided on the support device. The chain is sleeved between the driving sprocket and the driven sprocket. A driving rod is provided on the chain. A driving wheel is rotatably provided on the driving rod. The driving plate is provided on the unpacking limiting mechanism. A strip-shaped groove is provided on the driving plate, and the driving wheel is located in the strip-shaped groove.

5. A carton opening device according to claim 1 or 2, characterized in that: The bottom adsorption device includes a first bracket, a linear drive, a bottom suction cup seat, and a bottom suction cup. The first bracket is provided on the support device. The linear drive is provided on the first bracket. The bottom suction cup seat is provided on the output shaft of the linear drive. The bottom suction cup is provided on the bottom suction cup seat.

6. A carton opening device according to claim 5, characterized in that: The first bracket includes a bottom plate and a linear drive seat. The bottom plate is provided on the support device. A horizontal first waist-shaped groove is provided on the linear drive seat. A bolt passes through the first waist-shaped groove and is connected to the linear drive. A second waist-shaped groove is provided on the bottom suction cup seat. The bottom suction cup is slidably provided on the second waist-shaped groove.

7. A carton opening device according to claim 1 or 2, characterized in that: The flipping unpacking adsorption device includes a second bracket, a rotary drive, a rotary frame, an unpacking suction cup seat, and an unpacking suction cup. The second bracket is provided on the bottom adsorption device. The rotary drive is installed on the second bracket. The rotary frame is provided on the output shaft of the rotary drive. The unpacking suction cup seat is provided on the rotary frame. The unpacking suction cup is provided on the unpacking suction cup seat.

8. A carton opening device according to claim 7, characterized in that: A horizontally extending third waist-shaped groove is provided on the rotary frame, and the unpacking suction cup seat is slidably provided on the third waist-shaped groove.

9. The carton opening device according to claim 1, wherein: The conveying device includes a conveying drive, a conveying driving roller, a conveying driven roller, and a conveyor belt. The conveying drive is provided on the rack. The conveying driving roller is provided at one end of the rack. The output shaft of the conveying drive is connected to the conveying driving roller. The conveying driven roller is provided at the other end of the rack. The conveyor belt is sleeved between the conveying driving roller and the conveying driven roller.

10. A carton opening device according to claim 9, characterized in that: Two or more groups of driving blocks are provided on the conveyor belt, and a space is formed between adjacent groups of driving blocks.

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