Automatic bag opening machine

Abstract

The present invention discloses an automatic bag opening machine, comprising a bag feeding machine and a bag opening machine. The bag feeding machine feeds the packaging bag to the bag opening machine. First, the upper and lower suction cups of the bag opening open a small gap at the bag opening. The bag opening is then further opened by the bag opening component and flipped so that the bag opening faces upward. The bag opening is then opened by the bag holding component according to a preset bag opening width and length requirement, and the bag opening is fixed with a clamping claw. The width and length of the bag opening of the present invention can be freely set to meet the requirements of the delivery of items of different sizes. The bag taking, bag feeding, bag opening, and bag holding are completed in a continuous manner. The structure is compact, the layout is reasonable, the operation is smooth and stable, and the fully automatic simulation replaces the manual bag holding, reducing labor intensity and labor costs, and improving product packaging efficiency.

Description

Technical Field

[0001] The present invention relates to the field of packaging equipment, in particular to an automatic bag opening machine. Background Art

[0002] Products are packaged and sold in various forms, such as bags and boxes. Manual bagging requires one person to hold the bag while another loads the goods. For goods with large surface areas, two people are required to hold the bag open to facilitate the placement of the goods, which is time-consuming and labor-intensive. Existing technologies include some mechanical bag opening devices or those that use suction cups or manipulators to open bags. However, these openings typically have a fixed length and width, and the bag-holding force is weak, resulting in insufficient stability when placing items into the bag. Consequently, the effectiveness of bag opening operations needs to be improved. Summary of the Invention

[0003] In response to the problems existing in the prior art, the present invention provides an automatic bag opening machine that automatically takes out and opens bags, adjusts the length and width of the bag opening according to the size of the items put in, has a large traction force at the bag opening, facilitates the insertion of items, effectively replaces manual packaging operations, and improves product packaging efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The automatic bag opening machine includes a bag feeding machine and a bag opening machine. The bag feeding machine includes a bag feeding tray, a tray driving device and a bag opening lower suction cup installed on a frame. The bag feeding tray is slidably installed on the frame by a slide rail. The tray driving device drives the bag feeding tray to move along the slide rail to the bag opening machine to deliver bags or retreat and reset. The bag opening lower suction cup is located below the edge of the bag feeding tray on the bag opening machine side. The bag opening machine includes a bag opening upper suction component, a bag opening component and a bag holding component installed on the frame. The bag opening upper suction component is installed on the frame on the side of the bag feeding machine, including a bag opening upper suction cup and a suction cup driving device 1 for driving it up and down, and a suction cup driving device 2 for driving it forward and backward. The bag opening component is symmetrically installed on the frames on the left and right sides of the bag opening upper suction component, including a U-shaped frame, a bag opening insert, an insert driving device, a needle suction cup, a needle Suction cup driving device, rotation and flipping device, upper and lower driving parts, a needle suction cup is respectively installed on the inner side of the upper end of the two vertical plates of the U-shaped frame, and a needle suction cup driving device connected to the needle suction cup is installed on the outer side. The bag opening plug driven by the insert driving device is located between the two needle suction cups, and the rotation and flipping device is fixedly connected to the horizontal plate of the U-shaped frame, and the rotation and flipping device is movably installed on the upper and lower driving parts; the bag holding assembly is installed on the top of the frame, including four rectangularly distributed clamps, a bag opening width driving part and a bag opening length driving part, the first clamp is fixed in a fixed position and does not move, the bag opening width driving part is a linear module 1 and a linear module 2 arranged in parallel, the second clamp on the same side as the first clamp and the third clamp on the diagonal with the first clamp are respectively installed on the linear module 1 and the linear module 2, the linear module 2 and the fourth clamp are installed on the bag opening length driving part.

[0006] A further improvement is to install a bag storage platform next to the bag feeder. The bag storage platform includes a bag storage platform mounted on a frame, a bag retrieval suction cup, a material retrieval drive device that drives the bag retrieval suction cup up and down, and a feed drive device that drives the bag retrieval suction cup toward the bag feeder. The bag retrieval suction cup and material retrieval drive device are mounted on the feed drive device. Multiple packaging bags are stacked on the bag storage platform and automatically retrieved one by one.

[0007] A further improvement is that the material picking drive device, suction cup drive device 1, suction cup drive device 2, insert drive device, needle suction cup drive device, upper and lower drive device, and bag mouth long drive device are all cylinders, and the feeding drive device and tray drive device are all rodless cylinders.

[0008] A further improvement is that the upper and lower driving parts include a linear guide rail, a pushing plate, and a pushing cylinder installed on the vertical frame of the frame. The two ends of the pushing plate are fixed on the sliders of the linear guide rails on both sides. The telescopic rod of the pushing cylinder is connected to the pushing plate. The U-shaped frame is connected to the pushing plate through a rotating device, and the rotating device is a rotating cylinder that rotates 90 degrees.

[0009] A further improvement is that the clamping claw includes a bag-supporting plate, a clamping arm block and a clamping arm pushing cylinder, and the clamping arm pushing cylinder drives the connected clamping arm block to push it toward the bag-supporting plate.

[0010] A further improvement is that rollers are installed on the front clamping wall of the clamping arm block, so that when the bag-opening plate slides to open the bag opening to the length and width, the operation is smooth and the bag opening is not scratched.

[0011] A further improvement is that the bag mouth long drive component includes a linear guide rail 2, a pushing plate 2, and a pushing cylinder 2 installed on the top horizontal frame of the frame. The two ends of the pushing plate 2 are fixed on the sliders of the linear guide rail 2 on both sides. The telescopic rod of the pushing cylinder 2 is connected to the pushing plate 2, and the linear module 2 and the fourth clamp are installed on the pushing plate 2.

[0012] A further improvement is that a bag blowing rod is installed at the lower part of the frame of the bag feeding machine near the bag opening machine, and a row of blowing holes are provided on the rod body to help the lower part of the packaging bag move to the bottom of the bag opening machine.

[0013] A further improvement is that the top surfaces of the four clamping jaws, linear module 1, and linear module 2 are respectively installed with inclined plates. When the bag is opened and positioned, the inclined plates form a blanking opening with a larger top and a smaller bottom, which facilitates top blanking.

[0014] As a further improvement, a bag outlet is formed on one side of the bag opening machine frame, and a conveyor path extending towards the bag outlet is provided under the bag opening machine frame to facilitate the transportation of bagged items out of the bag opening machine. Beneficial effects

[0015] 1. The present invention completes bag taking, bag feeding, bag opening and bag supporting in a continuous manner, has a compact structure, a reasonable layout, and runs smoothly and stably. It can fully automatically simulate and replace manual bag supporting, reduce labor intensity and labor costs, and improve product packaging efficiency.

[0016] 2. The present invention first uses a suction cup to suck open the small gap of the bag opening, and then inserts the insert into the bag opening and uses a needle suction cup to locate and pull the bag opening at four points. After the bag opening is turned over, the bag opening is upward, and the clamping claws clamp the bag opening. One of the clamping claws is fixed, and the other three clamping claws are stretched and fixed according to the preset length and width values of the bag opening. The bag openings of different sizes can be opened as required, which is convenient for the placement of items.

[0017] 3. The conveyor path under the bag opening machine not only supports the bottom of the packaging bag to prevent the bag from being unstable when the items are put in, but also facilitates the rapid delivery of the bagged items. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the bag storage machine and bag delivery machine structure of the present invention;

[0020] Figure 3 This is a schematic structural diagram of the bag opening machine of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the bag opening assembly (excluding the upper and lower driving parts) of the present invention;

[0022] Figure 5 This is a schematic structural diagram of the bag support assembly of the present invention;

[0023] Figure 6 This is a top view of the present invention;

[0024] Figure 7 It is a schematic diagram of the rear side of the present invention;

[0025] Figure 8 It is a schematic diagram on the right side of the present invention. DETAILED DESCRIPTION

[0026] like Figures 1 to 8 As shown, the present invention includes a bag storage machine 1, a bag delivery machine 2, and a bag opening machine 3. The bag storage machine 1 and bag delivery machine 2 are arranged side by side, with the bag opening machine 3 located to one side of the bag delivery machine 2. The bag storage machine 1 includes a bag storage platform 11 mounted on a frame, a bag removal suction cup 12, a material removal drive device 13 (cylinder) that drives the bag removal suction cup up and down, and a material delivery drive device 14 (rodless cylinder) that drives the bag removal suction cup toward the bag delivery machine. The bag removal suction cup 12 and material removal drive device 13 are mounted on the material delivery drive device 14.

[0027] The bag feeding machine 2 includes a bag feeding tray 21 mounted on a frame, a tray driving device 22 (rodless cylinder), and a suction cup 23 under the bag opening. The bag feeding tray 21 is slidably mounted on the frame via a slide rail 24. The tray driving device 22 drives the bag feeding tray 21 along the slide rail 24 to deliver bags forward to the bag opening machine 3 or to retreat and reset. The suction cup 23 under the bag opening is located below the edge of the bag feeding tray on the bag opening machine side.

[0028] The bag opening machine 3 includes a bag mouth upper suction component 31, a bag opening component 32 and a bag support component 33 installed on the frame. The bag mouth upper suction component 31 is installed on the frame on the side of the bag feeding machine, including a bag mouth upper suction cup 311 and a suction cup driving device 1 312 (cylinder) driving it up and down, and a suction cup driving device 2 313 (cylinder) driving it forward and backward; the bag opening component 32 is symmetrically installed on the frames on the left and right sides of the bag mouth upper suction component, including a U-shaped frame 321, a bag opening insert 322, an insert driving device Device 323 (cylinder), needle suction cup 324, needle suction cup drive device 325 (cylinder), rotation device 326 (90-degree rotating cylinder), vertical drive member 327. Vertical drive member 327 includes linear guide rail 3271, push plate 3272, and push cylinder 3273 installed on the vertical frame of the frame. The two ends of push plate 3272 are fixed to the sliders of linear guide rail 3271 on both sides. The telescopic rod of push cylinder 3273 is connected to push plate 3272. A needle suction cup 324 is installed on the inner side of the upper end of the two vertical plates of the U-shaped frame 321, and a needle suction cup driving device 325 connected to the needle suction cup is installed on the outer side. The bag opening plug 322 driven by the plug driving device 323 is located between the two needle suction cups. The horizontal plate of the U-shaped frame 321 is fixedly connected to the rotation device 326, and the U-shaped frame 321 is connected to the pushing plate 1 3272 through the rotation device 326; the bag holding assembly 33 is installed on the top of the frame, and includes four rectangularly distributed clamping claws 331, a bag opening wide driving member 332 and a bag opening long driving member 333, and the bag opening long driving member 333 includes a linear guide rail 2 3331 installed on the horizontal frame at the top of the frame, a pushing plate 3272, and a pushing plate 3273. Plate 2 3332, pushing cylinder 2 3333, both ends of pushing plate 2 3332 are fixed on the sliders of linear guide rail 2 3331 on both sides, and the telescopic rod of pushing cylinder 2 3333 is connected to pushing plate 2 3332; the first clamping jaw 331-1 is fixed in position and does not move, the bag width driving part 332 is a linear module 1 3321 and a linear module 2 3322 arranged in parallel, the second clamping jaw 331-2 on the same side as the first clamping jaw and the third clamping jaw 331-3 on the diagonal line with the first clamping jaw are respectively installed on linear module 1 3321 and linear module 2 3322, and the linear module 2 3322 and the fourth clamping jaw 331-4 are installed on pushing plate 2 3332.

[0029] The clamping jaw 331 includes a bag-supporting plate 3311 , a clamping arm block 3312 and a clamping arm pushing cylinder 3313 . The clamping arm pushing cylinder 3313 drives the connected clamping arm block 3312 to push it toward the bag-supporting plate 3311 . A roller 3314 is installed on the front clamping wall of the clamping arm block 3312 .

[0030] A bag blowing rod 25 is installed on the lower part of the frame of the bag feeding machine 2 near the bag opening machine, and a row of blowing holes is provided on the rod body.

[0031] Inclined plates 34 are respectively installed on the top surfaces of the four clamping jaws 331 , the linear module 1 3321 and the linear module 2 3322 . When the bag is opened and positioned, the inclined plates form a blanking opening that is larger at the top and smaller at the bottom.

[0032] A bag outlet is formed on one side of the frame of the bag opening machine 3, and a conveying path 4 extending toward the bag outlet is provided below the frame of the bag opening machine.

[0033] Working process: Multiple packaging bags are stacked on the bag storage table 11 of the bag storage machine. The material picking drive device 13 (cylinder) drives the bag picking suction cup 12 downward to pick up a packaging bag, and then drives the bag picking suction cup upward to return to its original position. The feeding drive device 14 (rodless cylinder) drives the bag picking suction cup to move the packaging bag toward the bag feeding machine. After it is positioned above the bag feeding tray 21, it puts down the packaging bag. The material picking drive device 13 resets. At this time, the bag opening lower suction cup 23 sucks the lower layer of the bag opening;

[0034] The tray driving device 22 (cylinder) drives the bag feeding tray 21 to deliver the bag to the bag opening machine 3 along the slide rail 24; the synchronous bag opening upper suction cup 311 moves to the middle of the bag opening machine 3 under the push of the suction cup driving device 2 313 (cylinder); when the bag feeding tray 21 reaches the preset position, the suction cup driving device 1 312 (cylinder) drives the bag opening upper suction cup 311 downward to suck the upper layer of the packaging bag, and the suction cup driving device 1 312 is reset, and the bag opening is opened to a small opening; at this time, the insert driving device 323 (cylinder) drives the bag opening insert 322 to be inserted into the opened small bag opening, and the bag feeding tray 21 and the bag opening upper suction cup 311 retreat and reset, and the needle suction cup 324 is driven by the needle suction cup driving device 325 (cylinder) to pierce the four points of the bag opening of the packaging bag, and the needle suction The disk drive device 325 retreats to further open the bag opening, and the rotating device 326 (rotating cylinder) flips 90 degrees to turn the bag opening upward; then the pushing cylinder 1 3273 pushes the bag opening assembly upward to send the bag opening of the packaging bag to the position of the upper clamping jaw 331, and the bag-holding plate 3311 of the clamping jaw is inserted into the bag opening. The clamping point of the first clamping jaw 331-1 is fixed, and according to the preset bag opening width, the second clamping jaw 331-2 and the third clamping jaw 331-3 are precisely moved to their positions under the drive of the sliders of the linear module 1 3321 and the linear module 2 3322, and then the pushing cylinder 2 3333 drives the third clamping jaw 331-3 and the fourth clamping jaw 331-4 to move in the length direction, and the bag-holding plate 3311 opens the bag opening to the preset length and width, and the clamping jaws have sufficient traction and good stability in clamping the bag opening. At this time, the inclined plates 34 on the top surfaces of the four clamping jaws 331, linear module 1 3321, and linear module 2 3322 form a large upper and small lower feeding port for easy feeding. After feeding is completed, the conveyor 4 transports the bagged product out of the bagging machine to complete the bagging process.

[0035] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic bag opening machine, comprising a bag feeding machine (2) and a bag opening machine (3), characterized in that: The bag feeding machine (2) comprises a bag feeding tray (21) mounted on a frame, a tray driving device (22) and a bag opening lower suction cup (23). The bag feeding tray (21) is slidably mounted on the frame via a slide rail (24). The tray driving device (22) drives the bag feeding tray (21) along the slide rail (24) to deliver bags forward to the bag opening machine (3) or to retract and reset. The bag opening lower suction cup (23) is located below the edge of the bag feeding tray on the bag opening machine side. The bag opening machine (3) comprises a bag opening upper suction component (31), a bag opening component (32) and a bag supporting component mounted on the frame. (33), the bag mouth upper suction assembly (31) is installed on the frame on the side of the bag feeding machine, including the bag mouth upper suction cup (311) and the suction cup driving device 1 (312) that drives it up and down, and the suction cup driving device 2 (313) that drives it forward and backward; the bag opening assembly (32) is symmetrically installed on the frames on the left and right sides of the bag mouth upper suction assembly, including the U-shaped frame (321), the bag opening insert (322), the insert driving device (323), the needle suction cup (324), the needle suction cup driving device (325), the rotation device (326), and the upper and lower driving parts (327). A needle sucker (324) is installed on the inner side of the upper ends of the two vertical plates of the U-shaped frame (321), and a needle sucker driving device (325) connected to the needle sucker is installed on the outer side. The bag opening insert (322) driven by the insert driving device (323) is located between the two needle suckers. The horizontal plate of the U-shaped frame (321) is fixedly connected to the rotating device (326), and the rotating device (326) is movably installed on the upper and lower driving parts (327); the bag support assembly (33) is installed on the top of the frame, including four rectangularly distributed clamping claws (331), a bag opening width driving part (332), and a bag opening width driving part (333). 32) and a bag opening long drive member (333), the first clamping jaw (331-1) is fixed in position and does not move, the bag opening wide drive member (332) is a linear module 1 (3321) and a linear module 2 (3322) arranged in parallel, the second clamping jaw (331-2) on the same side as the first clamping jaw and the third clamping jaw (331-3) on the diagonal line with the first clamping jaw are respectively installed on the linear module 1 (3321) and the linear module 2 (3322), and the linear module 2 (3322) and the fourth clamping jaw (331-4) are installed on the bag opening long drive member (333).

2. The automatic bag opening machine according to claim 1, characterized in that: A bag storage machine (1) is provided on the side of the bag feeding machine (2). The bag storage machine (1) comprises a bag storage platform (11) mounted on a frame, a bag taking suction cup (12), a material taking drive device (13) for driving the bag taking suction cup up and down, and a material feeding drive device (14) for driving the bag taking suction cup to move toward the bag feeding machine. The bag taking suction cup (12) and the material taking drive device (13) are mounted on the material feeding drive device (14).

3. The automatic bag opening machine according to claim 2, characterized in that: The material taking drive device (13), the suction cup drive device 1 (312), the suction cup drive device 2 (313), the insert drive device (323), the needle suction cup drive device (325), the drive device of the upper and lower driving parts (327), and the drive device of the bag opening long driving part (333) are all cylinders, and the feeding drive device (14) and the tray drive device (22) are all rodless cylinders.

4. The automatic bag opening machine according to claim 1 or 2, characterized in that: The upper and lower driving parts (327) include a linear guide rail (3271) installed on the vertical frame of the frame, a pushing plate (3272), and a pushing cylinder (3273). The two ends of the pushing plate (3272) are fixed on the sliders of the linear guide rails (3271) on both sides. The telescopic rod of the pushing cylinder (3273) is connected to the pushing plate (3272). The U-shaped frame (321) is connected to the pushing plate (3272) through a rotating device (326). The rotating device (326) is a rotating cylinder that rotates 90 degrees.

5. The automatic bag opening machine according to claim 1 or 2, characterized in that: The clamping claw (331) comprises a bag-supporting plate (3311), a clamping arm block (3312), and a clamping arm pushing cylinder (3313). The clamping arm pushing cylinder (3313) drives the connected clamping arm block (3312) to push it toward the bag-supporting plate (3311).

6. The automatic bag opening machine according to claim 5, characterized in that: A roller (3314) is mounted on the front clamping wall of the clamping arm block (3312).

7. The automatic bag opening machine according to claim 1 or 2, characterized in that: The bag opening long drive member (333) includes a linear guide rail 2 (3331) installed on the top horizontal frame of the frame, a pushing plate 2 (3332), and a pushing cylinder 2 (3333). The two ends of the pushing plate 2 (3332) are fixed on the sliders of the linear guide rail 2 (3331) on both sides. The telescopic rod of the pushing cylinder 2 (3333) is connected to the pushing plate 2 (3332). The linear module 2 (3322) and the fourth clamping claw (331-4) are installed on the pushing plate 2 (3332).

8. The automatic bag opening machine according to claim 1 or 2, characterized in that: A bag blowing rod (25) is installed at the lower part of the frame of the bag feeding machine (2) close to the bag opening machine, and a row of blowing holes is provided on the rod body.

9. The automatic bag opening machine according to claim 1, characterized in that: The top surfaces of the four clamping jaws (331), the linear module 1 (3321), and the linear module 2 (3322) are respectively installed with inclined plates (34). When the bag is opened and the positioning is completed, the inclined plates form a blanking opening with a larger upper part and a smaller lower part.

10. The automatic bag opening machine according to claim 1, characterized in that: A bag outlet is formed on one side of the frame of the bag opening machine (3), and a conveying path (4) extending toward the bag outlet is provided below the frame of the bag opening machine.

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