An automatic folding device for single-cup paper trays

Abstract

The present invention relates to the technical field of food packaging machinery, and particularly relates to an automatic paper tray folding device for single-cup paper trays, including a frame. A moving device for driving the paper tray is arranged on the frame. On one side of the frame away from the ground, a suction-pushing device, a shaping device, and a buckling device are sequentially arranged along the moving direction of the paper tray. The single-cup paper tray folding device of the present invention does not require manual bending, interlocking, and clamping of the paper tray, which can improve production efficiency, reduce the labor intensity of employees, and lower production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging machinery, and in particular to an automatic paper tray folding device for single-cup paper trays. Background Art

[0002] For pudding products, it is often necessary to cover a formed frame-shaped paper tray to facilitate people to pick up the pudding and also achieve a good decorative effect.

[0003] When producing paper trays for pudding packaging, workers need to first bend the two ends of the paper tray by hand, and then interlock and clamp the insertion tongues at both ends of the paper tray to form a frame-shaped paper tray.

[0004] Due to the cumbersome folding process, a large number of operators are required for the folding process, resulting in a high labor intensity for manual folding and thus a low folding efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic folding device for single-cup paper tray products that reduces the labor intensity and production cost of employees and realizes automatic bending, interlocking, and clamping and forming of paper trays.

[0006] To solve the above technical problem, the object of the present invention is achieved through the following technical solutions: providing an automatic folding device for single-cup paper trays, including a frame, a moving device for driving the paper tray is arranged on the frame, and on one side of the frame away from the ground, a suction and pushing device, a shaping device, and a fastening device are sequentially arranged along the moving direction of the paper tray.

[0007] Preferably, the moving device includes a first chain, a second chain, and a driving motor, and both the first chain and the second chain are connected to the output end of the driving motor.

[0008] Preferably, both the first chain and the second chain are provided with retaining plates, and the retaining plates on the first chain and the retaining plates on the second chain are arranged alternately.

[0009] Preferably, the suction and pushing device includes a suction tray cylinder and a push tray cylinder, both the suction tray cylinder and the push tray cylinder are arranged on the frame, and the axes of their output ends do not coincide.

[0010] Preferably, the shaping device includes a first guide plate and a second guide plate, both the first guide plate and the second guide plate are arranged on the frame, and both the first guide plate and the second guide plate are parallel to the moving direction of the paper tray, and the plane where the first guide plate is located is parallel to the plane where the second guide plate is located.

[0011] Preferably, the shaping device further includes a third guide plate for flattening the paper tray, the third guide plate is arranged on the frame, and the third guide plate is parallel to the second guide plate.

[0012] Preferably, the shaping device further includes a first pressing rod and a second pressing rod. One end of each of the first pressing rod and the second pressing rod is arranged on the frame. The first pressing rod and the second pressing rod are both bent towards the third guide plate, and the other ends of the first pressing rod and the second pressing rod are close to each other.

[0013] Preferably, an auxiliary mounting plate is further arranged on the frame, and a pressing die cylinder is arranged on one side of the auxiliary mounting plate facing the third guide plate.

[0014] Preferably, a tongue interlocking upper pressing guide rod is further arranged on the third guide plate.

[0015] Preferably, the fastening device includes a deduction mounting plate arranged on the frame. The fastening device further includes a pressing cylinder arranged on the deduction mounting plate, and an interlocking clamping air claw is arranged at the output end of the pressing cylinder.

[0016] The beneficial effect of the present invention is that the suction and support cylinder first sucks down the paper tray. After the push and support cylinder pushes the paper tray into the gap between the first guide plate and the second guide plate, the driving motor drives the first chain and the second chain to push the paper tray to move forward intermittently. With the assistance of the third guide plate, the first pressing rod and the second pressing rod, the paper tray is bent. The pressing die cylinder will press out a die mark on the e-shaped head tongue of the paper tray, and will perform a preliminary interlocking with the assistance of the third guide plate, the first pressing rod and the second pressing rod. Finally, the interlocking clamping air claw clamps the finished frame-shaped paper tray with the paper tray interlocked. In this way, the automatic production of single-cup paper trays is realized in a cycle. The single-cup paper tray folding device of the present invention does not require manual bending, interlocking, and clamping of the paper tray, which can improve production efficiency, reduce the labor intensity of employees and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic front view of the structure of the automatic folding device for single-cup paper tray products provided by the embodiment of the present invention;

[0019] Figure 2 It is a schematic top view of the automatic folding device for single-cup paper tray products provided by the embodiment of the present invention;

[0020] Figure 3 It is a schematic top view of the automatic folding device for single-cup paper tray products provided by the embodiment of the present invention after sucking and pulling the paper tray into a U shape;

[0021] Figure 4It is a top view schematic diagram after the automatic folding device for single-cup paper tray products provided by the embodiments of the present invention pushes the U-shaped paper tray under the auxiliary installation plate;

[0022] Figure 5 It is a top view schematic diagram after the automatic folding device for single-cup paper tray products provided by the embodiments of the present invention pushes the U-shaped paper tray to form a quasi-frame shape;

[0023] Figure 6 It is a top view schematic diagram after the automatic folding device for single-cup paper tray products provided by the embodiments of the present invention pushes the quasi-frame-shaped paper tray out from under the auxiliary installation plate to initially interlock the paper tray;

[0024] Figure 7 It is a top view schematic diagram after the automatic folding device for single-cup paper tray products provided by the embodiments of the present invention pushes the initially interlocked paper tray under the deduction installation plate;

[0025] Figure 8 It is a top view schematic diagram after the automatic folding device for single-cup paper tray products provided by the embodiments of the present invention interlocks and clamps the initially interlocked paper tray.

[0026] Explanation of the markings in the figure:

[0027] 10. Frame; 11. First chain; 12. Second chain; 13. Paper tray storage rack; 131. Paper tray; 14. Suction tray cylinder; 15. Push tray cylinder; 16. First guide plate; 17. Outer guide rod; 18. Second guide plate; 19. Third guide plate; 20. Auxiliary installation plate; 21. First pressure rod; 22. Second pressure rod; 23. Pressing die cylinder; 24. Insert tongue interlocking upper pressure guide rod; 30. Deduction installation plate; 31. Pressing cylinder; 32. Interlocking clamping gripper. Detailed implementation manners

[0028] Next, in combination with the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] The terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0033] The terms "parallel", "perpendicular", etc. do not mean that the components are required to be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" only means that its direction is more parallel relative to "perpendicular", rather than indicating that the structure must be completely parallel, but may be slightly inclined.

[0034] The terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal, vertical or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", rather than indicating that the structure must be completely horizontal, but may be slightly inclined.

[0035] In addition, terms such as "substantially", "basically", etc. are intended to indicate that the relevant content does not require absolute precision, but may have a certain deviation. For example: "substantially equal" does not merely mean absolute equality. Since it is difficult to achieve absolute "equality" during actual production and operation processes, there is generally a certain deviation. Therefore, in addition to absolute equality, "substantially equal" also includes the above-mentioned situations with a certain deviation. Taking this as an example, in other cases, unless otherwise specified, terms such as "substantially", "basically", etc. have meanings similar to the above.

[0036] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Refer to Figure 1 、 Figure 2, in order to improve the efficiency of the forming process of the pudding paper tray and reduce the labor intensity of the relevant staff, this embodiment provides an automatic folding device for single-cup paper trays, including a frame 10, and a moving device for driving the paper tray 131 is arranged on the frame 10. On one side of the frame 10 away from the ground, a suction-pushing device, a shaping device and a fastening device are arranged in sequence along the moving direction of the paper tray 131.

[0038] Referring to Figure 1 , Figure 2 , in this embodiment, the moving device includes a first chain 11, a second chain 12 and a driving motor. Both the first chain 11 and the second chain 12 are sleeved on the output end of the driving motor; correspondingly, the driving motor is selected as a servo motor to accurately control the moving distance of the chain. Both the first chain 11 and the second chain 12 are provided with baffles, and the baffles on the first chain 11 and the baffles on the second chain 12 are arranged staggeredly.

[0039] The suction-pushing device includes a suction tray cylinder 14 and a push tray cylinder 15. Both the suction tray cylinder 14 and the push tray cylinder 15 are arranged on the frame 10, and the axes of their output ends do not coincide; the suction tray cylinder 14 will suck out the unfolded paper tray 131, and the push tray cylinder 15 will push the paper tray 131, and then the first chain 11 and the second chain 12 will drive the paper tray 131 to move.

[0040] The shaping device includes a first guide plate 16 and a second guide plate 18. Both the first guide plate 16 and the second guide plate 18 are arranged on the frame 10, and both the first guide plate 16 and the second guide plate 18 are parallel to the moving direction of the paper tray 131. The plane where the first guide plate 16 is located is parallel to the plane where the second guide plate 18 is located; the push tray cylinder 15 will push the paper tray 131 into the gap between the first guide plate 16 and the second guide plate 18, so that the first guide plate 16 and the second guide plate 18 will limit the paper tray 131 to only move along with the first chain 11 and the second chain 12.

[0041] The shaping device further includes a third guide plate 19 for flattening the paper tray 131. The third guide plate 19 is disposed on the frame 10, and the third guide plate 19 is parallel to the second guide plate 18. The shaping device further includes a first pressing rod 21 and a second pressing rod 22. One ends of the first pressing rod 21 and the second pressing rod 22 are both disposed on the frame 10. The first pressing rod 21 and the second pressing rod 22 are both bent towards the third guide plate 19, and the other ends of the first pressing rod 21 and the second pressing rod 22 are close to each other. Thus, during the movement of the paper tray 131 along with the first chain 11 and the second chain 12, its two e-shaped heads will be respectively pressed by the first pressing rod 21 and the second pressing rod 22 and bent towards the third guide plate 19. The baffles on the first chain 11 and the second chain 12 are arranged staggeredly. Furthermore, the two e-shaped heads of the paper tray 131 will be overlapped staggeredly. In addition, an upper pressing guide rod 24 with interlocking tongues is further disposed on the third guide plate 19 to ensure that the two e-shaped heads of the paper tray 131 are not easily separated after being overlapped.

[0042] In this embodiment, an auxiliary mounting plate 20 is further disposed on the frame 10. A pressing die cylinder 23 is disposed on the side of the auxiliary mounting plate 20 facing the third guide plate 19. The pressing die cylinder 23 will apply pressure to the paper tray 131 when it passes through the first pressing rod 21 and the second pressing rod 22, thereby completing the shaping of the two e-shaped heads of the paper tray 131.

[0043] In this embodiment, the fastening device includes a deduction mounting plate 30. The deduction mounting plate 30 is disposed on the frame 10. The fastening device further includes a pressing cylinder 31 and an interlocking clamping claw 32 disposed on the deduction mounting plate 30. After the pressing cylinder 31 extends out and abuts against the two staggeredly overlapped heads of the paper tray 131, the interlocking clamping claw 32 will fasten the two staggeredly overlapped e-shaped heads of the paper tray 131 together, thereby completing the automatic folding of the paper tray 131.

[0044] The specific settings and working modes of this embodiment will be specifically described below.

[0045] The rack 10 is placed on the ground. The first chain 11 and the second chain 12 are installed on the sprockets of the rack. The first guide plate 16 is installed on the rack and is arranged between the upper parts of the first chain 11 and the second chain 12. A push cylinder 15 is provided at the right end of the first guide plate 16. In order to store the unfolded paper tray, a storage bracket 13 is provided above the right end of the first guide plate 16, and a suction support cylinder 14 is provided below the right end of the first guide plate 16. A circular through-hole is provided at the right end of the first guide plate 16 for the suction support cylinder 14 to pass through when it extends and retracts. The storage rack 13 and the suction support cylinder 14 are installed on the rack 10. An auxiliary mounting plate 20 is provided above the middle of the rack 10. The second guide plate 18 and the third guide plate 19 are installed below the entrance of the auxiliary mounting plate 20 through a suspension arm. The second guide plate 18 is arranged between the third guide plate 19 and the first guide plate 16. In order to ensure that the two e-shaped heads of the paper tray are not easily deformed in other ways during movement, outer guide rods 17 are provided on both sides of the third guide plate 19, and the outer guide rods 17 are installed on the two inner sides of the top of the rack 10. The first pressure rod 21 and the second pressure rod 22 are arranged above both sides of the third guide plate 19 and are installed below the entrance of the auxiliary mounting plate 20. The pressing die cylinder 23 is arranged above the entrance of the third guide plate 19 and is installed below the middle of the auxiliary mounting plate 20. The tongue-and-groove upper pressing guide rod 24 is arranged above the middle of the third guide plate 19 and is installed below the exit of the auxiliary mounting plate 20. The deduction mounting plate 30 is arranged above the left side of the rack 10, and the pressing cylinder 31 and the interlocking clamping air claw 32 are installed on the deduction mounting plate 30.

[0046] Among them, a through gap is provided between the second guide plate 18 and the first guide plate 16. When the first chain 11 and the second chain 12 push the paper tray 131 forward, the bottom of the paper tray slides forward guided by the through gap; a through gap is provided between both sides of the third guide plate 19 and the outer guide rods 17. When the first chain 11 and the second chain 12 push the paper tray 131 forward, both sides of the paper tray slide forward guided by the through gap; the first chain 11 and the second chain 12 are each provided with a stop piece every sixteen pitches. The stop pieces are arranged oppositely and are used to push the paper tray forward; the stop piece of the first chain 11 lags behind the stop piece of the second chain 12 by two pitches. The pitch is the chain pitch, and each pitch is 12.6 millimeters; the first chain 11 and the second chain 12 are installed on the sprockets, and the sprockets are driven by a servo motor, and the servo motor is controlled by a PLC.

[0047] Refer to Figures 3 to 8, at the beginning, stacks of paper trays 131 to be folded are placed on the storage bracket. Then, the suction support cylinder 14 extends to suck the paper tray 131 on the storage bracket 13. After that, the suction support cylinder 14 retracts to pull down the paper tray 131. When the paper tray 131 is pulled down to contact the first guide plate 16, the suction support cylinder 14 is separated from the paper tray 131. Under the clamping action of the outer guide rod 17, the paper tray 131 forms a U shape. The push support cylinder 15 extends to push the U-shaped paper tray 131 into the gap between the first guide plate 16 and the second guide plate 18, and then the push support cylinder 15 retracts. The first chain 11 and the second chain 12 move forward sixteen pitches driven by the motor. The U-shaped paper tray 131 is pushed forward by the flanges of the first chain 11 and the second chain 12 and moves under the auxiliary mounting plate 20.

[0048] The first chain 11 and the second chain 12 move forward another sixteen pitches driven by the motor. The U-shaped paper tray 131 is also pushed forward sixteen pitches by the flanges of the first chain 11 and the second chain 12 and reaches under the tongue pressing die cylinder 23. During the forward movement of the U-shaped paper tray 131, with the assistance of the third guide plate 19, first, the first pressing rod 21 bends the e-shaped head of the U-shaped paper tray 131 above the first chain 11, and then the second pressing rod 22 bends the e-shaped head of the U-shaped paper tray 131 above the second chain 12, so that the e-shaped forehead of the U-shaped paper tray 131 above the first chain 11 is located below the e-shaped forehead of the U-shaped paper tray 131 above the second chain 12. Since the flange of the second chain 12 is two pitches ahead of the flange of the first chain 11, the e-shaped head of the U-shaped paper tray 131 above the second chain 12 enters under the upper pressing guide rod 24 of the tongue interlocking, making the paper tray 131 form a quasi-frame shape with a larger upper part and a smaller lower part. The third guide plate 19 is above the inner frame of the quasi-frame-shaped paper tray 131. At this time, the pressing die cylinder 23 extends, and with the assistance of the third guide plate 19, it presses out a die mark on the tongue of the e-shaped head of the U-shaped paper tray 131 above the first chain 11, and then the pressing die cylinder 23 retracts.

[0049] The first chain 11 and the second chain 12 move forward another sixteen pitches driven by the motor. The quasi-frame-shaped paper tray 131 is also pushed forward sixteen pitches by the flanges of the first chain 11 and the second chain 12. The quasi-frame-shaped paper tray 131 leaves under the auxiliary mounting plate 20. During the movement of the quasi-frame-shaped paper tray 131, under the action of the inner guiding first guide plate 16, second guide plate 18, third guide plate 19, outer guide rod 17, and upper pressing guide rod 24 of the tongue interlocking, the tongues at both ends of the e-shaped heads of the quasi-frame-shaped paper tray 131 are automatically preliminarily interlocked, and the initially interlocked frame-shaped paper tray 131 has a smaller upper part and a larger lower part.

[0050] The first chain 11 and the second chain 12 move forward another sixteen pitches under the drive of the motor. The initially interlocked frame-shaped paper tray 131 also moves forward sixteen pitches under the push of the retaining pieces of the first chain 11 and the second chain 12, and enters below the deduction mounting plate 30. The pressing cylinder 31 first extends to gently press against the e-shaped head, and then the interlocking clamping claw 32 acts to clamp the initially interlocked frame-shaped paper tray 131. Finally, the pressing cylinder 31 and the interlocking clamping claw 32 retract simultaneously. At this time, the paper tray 131 is a finished frame-shaped paper tray that is interlocked and clamped. When the first chain 11 and the second chain 12 move forward another sixteen pitches under the drive of the motor, the finished frame-shaped paper tray 131 flows into use on the automatic assembly line under the push of the retaining pieces of the first chain 11 and the second chain 12. It should be noted that every time the first chain 11 and the second chain 12 move forward sixteen pitches under the drive of the motor, the suction and support cylinder 14 acts to suck and pull a paper tray 131 from the storage bracket 13, thus realizing continuous automatic folding of the tray.

[0051] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An automatic folding device for single-cup paper trays, characterized in that: It includes a frame, on which is provided a moving device for driving a paper tray. On the side of the frame away from the ground, along the moving direction of the paper tray, there are also sequentially arranged a suction-pushing device, a shaping device and a fastening device; The moving device includes a first chain, a second chain and a driving motor, and both the first chain and the second chain are connected to the output end of the driving motor; There are retaining plates arranged on both the first chain and the second chain, and the retaining plates on the first chain and the retaining plates on the second chain are arranged alternately; the retaining plates are arranged oppositely and are used to push the paper tray forward; the retaining plates of the first chain lag behind the retaining plates of the second chain by two pitches, and the pitch is the chain pitch; The suction-pushing device includes a suction support cylinder and a push support cylinder, and both the suction support cylinder and the push support cylinder are arranged on the frame, and the axes where their output ends are located do not coincide.

2. The automatic folding device for single-cup paper trays according to claim 1, characterized in that: The shaping device includes a first guide plate and a second guide plate, and both the first guide plate and the second guide plate are arranged on the frame, and both the first guide plate and the second guide plate are parallel to the moving direction of the paper tray, and the plane where the first guide plate is located is parallel to the plane where the second guide plate is located.

3. The automatic folding device for single-cup paper trays according to claim 2, characterized in that: The shaping device further includes a third guide plate for flattening the paper tray, and the third guide plate is arranged on the frame and is parallel to the second guide plate.

4. The automatic folding device for single-cup paper trays according to claim 3, characterized in that: The shaping device further includes a first pressing rod and a second pressing rod. One ends of both the first pressing rod and the second pressing rod are arranged on the frame, both the first pressing rod and the second pressing rod are bent towards the third guide plate, and the other ends of the first pressing rod and the second pressing rod are close to each other.

5. The automatic folding device for single-cup paper trays according to claim 4, characterized in that: An auxiliary mounting plate is also arranged on the frame, and a pressing die cylinder is arranged on the side of the auxiliary mounting plate facing the third guide plate.

6. The automatic folding device for single-cup paper trays according to claim 5, characterized in that: An insertion tongue and mutual fastening upper pressing guide rod is also arranged on the third guide plate.

7. The automatic folding device for single-cup paper trays according to claim 1, characterized in that: The fastening device includes a deduction mounting plate arranged on the frame, and the fastening device further includes a pressing cylinder arranged on the deduction mounting plate, and a mutual fastening clamping air claw is arranged on the output end of the pressing cylinder.

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