Napkin packaging device

Abstract

This utility model discloses a napkin packaging device, belonging to the technical field of packaging equipment. It includes an upper pressure plate, a lower support plate, a rear sealing plate, a left sealing plate, and a right sealing plate. The rear sealing plate has a rear plate heat-sealing pin, the left sealing plate has a left plate heat-sealing pin, and the right sealing plate has a right plate heat-sealing pin. A rear upper insert plate and a rear lower insert plate are provided between the rear sealing plate and the napkin. The rear upper insert plate and the rear lower insert plate have rear upper plate notches. The left sealing plate and the napkin have a left lower insert plate, a left upper insert plate, a left front insert piece, and a left rear insert piece. The left lower insert plate and the upper left insert plate have left lower plate notches. The right sealing plate and the napkin have a right lower insert plate, a right upper insert plate, a right front insert piece, and a right rear insert piece. The right lower insert plate and the upper right insert plate have right lower plate notches. This utility model aims to solve the problem of poor folding and sealing of the packaging film and high scrap rate caused by the low height of existing napkin packaging.

Description

Technical Field

[0001] This utility model belongs to the field of packaging equipment technology, and relates to a packaging device for napkins. Background Technology

[0002] The demand for paper napkins in the catering industry and various daily consumption scenarios continues to grow. To meet market demand, paper napkin manufacturers need to continuously expand production scale and improve production efficiency. Since a stack of paper napkins to be packaged is approximately 15mm high, the current packaging process mainly relies on manual operation. Workers first cover the bottom, front, and top of the napkins with wrapping film, then use manual skills to fold the wrapping film at the back, left, and right sides of the napkins. Finally, the wrapped napkins are placed on the heat-sealing machine's heat-sealing needles to complete the packaging process. This repetitive work over a long period easily leads to worker fatigue, making it difficult to maintain high concentration. Once workers become fatigued, the quality of work suffers significantly, potentially resulting in inaccurate folding of the wrapping film and insecure heat sealing, affecting the consistency of the paper napkin packaging quality. Utility Model Content

[0003] This invention provides a napkin packaging device to solve the problem of poor folding and sealing of the packaging film and high scrap rate caused by the low height of existing napkin packaging.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: it includes an upper pressure plate, a lower support plate, a rear sealing plate, a left sealing plate, and a right sealing plate. The upper pressure plate is located directly above the lower support plate and can be raised and lowered. The rear sealing plate is located above the rear side of the lower support plate and can be raised, lowered, and lateralized, and is equipped with multiple rear sealing pins. The left sealing plate is located above the left side of the lower support plate and can be lateralized, and is equipped with multiple left sealing pins. The right sealing plate is located above the right side of the lower support plate and can be lateralized, and is equipped with multiple right sealing pins. A napkin covered with a film at the bottom, front end, and top is pushed onto the lower support plate, and the upper pressure plate is used to press down the napkin.

[0005] A retractable upper rear plate and a lower rear plate are provided between the back sealing plate and the back of the napkin. The upper rear plate has multiple upper rear plate notches, and the lower rear plate has multiple lower rear plate notches. The upper rear plate is located between the back sealing plate and the lower rear plate. When the lower rear plate rises, it folds the lower wrapping film at the rear end of the napkin upwards. When the upper rear plate falls, it folds the upper wrapping film at the rear end of the napkin downwards, and the lower rear plate notches meet the upper rear plate notches. The back sealing plate is lowered until the back plate hot ironing needles are horizontally aligned with the back lower plate notch. Then, the back sealing plate moves horizontally toward the napkin, allowing the heated back plate hot ironing needles to pass through the back lower plate notch and the back upper plate notch to heat and bond the upper and lower wrapping films at the rear end of the napkin. Then, the back sealing plate moves horizontally back to its original position, allowing the back plate hot ironing needles to exit from the back lower plate notch and the back upper plate notch. The back lower insert plate and the back upper insert plate then return to their original positions.

[0006] Between the left sealing iron plate and the left side of the napkin, there are liftable lower left and upper left insert plates. The lower left insert plate has multiple lower left plate notches, and the upper left insert plate has multiple upper left plate notches. The upper left insert plate is located between the lower left insert plate and the left sealing iron plate. Between the lower left insert plate and the napkin, there are liftable and translatable front left and rear left insert plates. The front left and rear left insert plates descend to the middle of the left side of the napkin. Then, the front left insert plate translates to fold the front end wrapping of the left side of the napkin inward, and the rear left insert plate translates to wrap the rear end wrapping of the left side of the napkin. Folding inward, the lower left insert rises to fold the lower left wrapping film of the napkin upward, the upper left insert descends to fold the upper left wrapping film of the napkin downward, and the notch of the upper left plate overlaps with the notch of the lower left plate. The left sealing plate moves horizontally toward the napkin, so that the heated left plate heat-sealing needle passes through the notch of the upper left plate and the notch of the lower left plate to heat and bond the upper and lower wrapping films of the left side of the napkin. Then the left sealing plate moves horizontally back to its original position, so that the left plate heat-sealing needle withdraws from the notch of the upper left plate and the notch of the lower left plate. The lower left insert and the upper left insert return to their original positions.

[0007] Between the right sealing plate and the right side of the napkin, there are liftable lower right inserts and upper right inserts. The lower right insert has multiple lower right plate notches, and the upper right insert has multiple upper right plate notches. The upper right insert is located between the lower right insert and the right sealing plate. Between the lower right insert and the napkin, there are liftable and translatable front right inserts and rear right inserts. The front right insert and rear right insert descend to the middle of the right side of the napkin. Then, the front right insert translates to fold the front end wrapping of the right side of the napkin inward, and the rear right insert translates to wrap the rear end wrapping of the right side of the napkin. Folding inward, the lower right insert rises to fold the lower wrapping film on the right side of the napkin upward, and the upper right insert descends to fold the upper wrapping film on the right side of the napkin downward, with the notch on the upper right plate overlapping the notch on the lower right plate. The right sealing plate moves horizontally toward the napkin, allowing the heated right plate heat-sealing needle to pass through the notches on the upper right plate and the lower right plate to heat and bond the upper and lower wrapping films on the right side of the napkin. Then, the right sealing plate moves horizontally back to its original position, allowing the right plate heat-sealing needle to exit from the notches on the upper right plate and the lower right plate. The lower right insert and the upper right insert return to their original positions.

[0008] A more specific technical solution than the above-mentioned technical solution is as follows: a conveyor belt is provided below the upper pressure plate. After the napkins are heat-sealed, another stack of napkins is pushed onto the lower support plate, and the heat-sealed napkins are pushed onto the conveyor belt and transported to another location.

[0009] Furthermore: the upper rear insert plate has seven upper rear plate notches, the lower rear insert plate has seven lower rear plate notches, and the rear sealing plate has seven rear plate hot stamping needles.

[0010] Furthermore: the lower left insert plate has seven lower left plate notches, the upper left insert plate has seven upper left plate notches, and the left sealing plate has seven left plate hot stamping needles.

[0011] Furthermore: the lower right insert plate has seven lower right plate notches, the upper right insert plate has seven upper right plate notches, and the right sealing plate has seven right plate hot stamping needles.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: the upper pressure plate and the lower support plate press down the napkin covered with film at the bottom, front end and top. The rear upper insert plate, rear lower insert plate and rear sealing iron plate fold and heat seal the film at the rear end of the napkin. The left front insert plate, left rear insert plate, left lower insert plate, left upper insert plate and left sealing iron plate fold and heat seal the film on the left side of the napkin. The right front insert plate, right rear insert plate, right lower insert plate, right upper insert plate and right sealing iron plate fold and heat seal the film on the right side of the napkin. This realizes the automatic folding and heat sealing of the film at the rear end, left side and right side of the napkin, effectively solving the problem of poor folding and sealing of the packaging film and high scrap rate caused by the low packaging height of the napkin. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a diagram showing a napkin with a film covering its bottom, front, and top placed under the upper pressure plate.

[0015] Figures 3 to 8 This is a schematic diagram of the process of packaging paper napkins according to this utility model.

[0016] In the diagram: 1. Upper pressure plate; 2. Lower support plate; 3. Rear sealing plate; 31. Rear plate heat-sealing needle; 32. Rear upper insert plate; 33. Rear upper plate notch; 34. Rear lower insert plate; 35. Rear lower plate notch; 4. Left sealing plate; 41. Left plate heat-sealing needle; 42. Left lower insert plate; 43. Left lower plate notch; 44. Left upper insert plate; 45. Left upper plate notch; 46. Left front insert plate; 47. Left rear insert plate; 5. Right sealing plate; 51. Right plate heat-sealing needle; 52. Right lower insert plate; 53. Right lower plate notch; 54. Right upper insert plate; 55. Right upper plate notch; 56. Right front insert plate; 57. Right rear insert plate; 6. Conveyor belt; 7. Napkin. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and examples:

[0018] It should be noted in the description that the terms "front", "rear", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0019] like Figures 1 to 8The napkin packaging device shown includes an upper pressure plate 1, a lower support plate 2, a rear sealing plate 3, a left sealing plate 4, and a right sealing plate 5. The upper pressure plate 1 is located directly above the lower support plate 2 and can be raised and lowered. The rear sealing plate 3 is located above and behind the lower support plate 2 and can be raised, lowered, and lateralized, and is equipped with seven rear sealing pins 31. The left sealing plate 4 is located above and to the left of the lower support plate 2 and can be lateralized, and is equipped with seven left sealing pins 41. The right sealing plate 5 is located above and to the right of the lower support plate 2 and can be lateralized, and is equipped with seven right sealing pins 51. A conveyor belt 6 is provided in front of the lower support plate 2. Napkins 7 covered with film at the bottom, front end, and top are pushed onto the lower support plate 2, and the upper pressure plate 1 is used to press down the napkins 7. Between the rear sealing plate 3 and the rear of the napkin 7, there are liftable upper rear inserts 32 and lower rear inserts 34. The upper rear insert 32 has seven upper rear plate notches 33, and the lower rear insert 34 has seven lower rear plate notches 35. The upper rear insert 32 is located between the rear sealing plate 3 and the lower rear insert 34. Between the left sealing plate 4 and the left side of the napkin 7, there are liftable lower left inserts 42 and upper left inserts 44. The lower left insert 42 has seven lower left plate notches 43, and the upper left insert 44 has seven upper left plate notches 45. The upper left insert 44 is located between the lower left insert 42 and the left sealing plate 4. Between the lower left insert 42 and the napkin 7, there are liftable and translatable front left inserts 46 and rear left inserts 47. Between the right sealing iron plate 5 and the right side of the napkin 7, there are liftable lower right insert plate 52 and upper right insert plate 54. The lower right insert plate 52 has seven lower right plate notches 53, and the upper right insert plate 54 has seven upper right plate notches 55. The upper right insert plate 54 is located between the lower right insert plate 52 and the right sealing iron plate 5. Between the lower right insert plate 52 and the napkin 7, there are liftable and translatable front right insert plate 56 and rear right insert plate 57.

[0020] In use, push the napkin 7, with its bottom, front, and top covered with film, onto the lower support plate 2 so that it is below the upper pressure plate 1. The upper pressure plate 1 descends to press down on the napkin 7. The lower rear insert plate 34 rises to fold the lower film at the rear end of the napkin 7 upwards. The upper rear insert plate 32 descends to fold the upper film at the rear end of the napkin 7 downwards, and the lower rear plate notch 35 overlaps with the upper rear plate notch 33. The sealing plate 3 descends until the sealing pin 31 is horizontally aligned with the lower rear plate notch 35. Then, the sealing plate 3 moves horizontally toward the napkin 7, allowing the heated sealing pin 31 to pass through the lower rear plate notch 35 and the upper rear plate notch 33 to heat and bond the upper and lower film at the rear end of the napkin 7 (e.g., ...). Figure 3 (As shown), then the rear sealing plate 3 moves back to its original position, causing the rear plate ironing needle 31 to retract from the rear lower plate notch 35 and the rear upper plate notch 33. The rear lower insert plate 34 descends back to its original position, and the rear upper insert plate 32 rises back to its original position. The left front insert 46, left rear insert 47, right front insert 56, and right rear insert 57 descend to the middle of the left and right sides of the napkin 7 (as shown). Figure 4(As shown); then the left front insert 46 moves to fold the front end wrapping of the left side of the napkin 7 inward, the left rear insert 47 moves to fold the rear end wrapping of the left side of the napkin 7 inward, the right front insert 56 moves to fold the front end wrapping of the right side of the napkin 7 inward, and the right rear insert 57 moves to fold the rear end wrapping of the right side of the napkin 7 inward (as shown). Figure 5 (As shown); the lower left insert plate 42 rises to fold the lower left wrapping film of the napkin 7 upwards; the lower right insert plate 52 rises to fold the lower right wrapping film of the napkin 7 upwards; the upper left insert plate 44 descends to fold the upper left wrapping film of the napkin 7 downwards, with the upper left plate notch 45 overlapping the lower left plate notch 43; the upper right insert plate 54 descends to fold the upper right wrapping film of the napkin 7 downwards, with the upper right plate notch 55 overlapping the lower right plate notch 53; the left sealing plate 4 moves horizontally towards the napkin 7, allowing the heated left plate hot iron 41 to pass through the upper left plate notch 45 and the lower left plate notch 43 to heat and bond the upper and lower wrapping films on the left side of the napkin 7; the right sealing plate 5 moves horizontally towards the napkin 7, allowing the heated right plate hot iron 51 to pass through the upper right plate notch 55 and the lower right plate notch 53 to heat and bond the upper and lower wrapping films on the right side of the napkin 7 (as shown). Figure 6 (As shown); then the left sealing plate 4 moves back to its original position, causing the left plate hot iron 41 to exit from the upper left plate notch 45 and the lower left plate notch 43. Then the right sealing plate 5 moves back to its original position, causing the right plate hot iron 51 to exit from the upper right plate notch 55 and the lower right plate notch 53. The lower left insert plate 42 descends back to its original position, the lower right insert plate 52 descends back to its original position, the upper left insert plate 44 rises back to its original position, and the upper right insert plate 54 rises back to its original position (as shown). Figure 7 (As shown). Finally, the upper pressure plate 1 and the rear sealing plate 3 rise, and the conveyor belt 6 starts running to transport the packaged napkins 7 to another location, ready to be pushed into another napkin 7 with a film covering the bottom, front end, and top (as shown). Figure 8 As shown), and so on in a loop.

[0021] In this example, the lifting and lowering of the upper pressure plate 1, the lifting and lowering and translation of the rear sealing plate 3, the lifting and lowering of the rear upper insert plate 32, the lifting and lowering of the rear lower insert plate 34, the translation of the left sealing plate 4, the lifting and lowering of the left lower insert plate 42, the lifting and lowering of the left upper insert plate 44, the lifting and lowering and translation of the left front insert plate 46, the lifting and lowering and translation of the left rear insert plate 47, the translation of the right sealing plate 5, the lifting and lowering of the right lower insert plate 52, the lifting and lowering of the right upper insert plate 54, the lifting and lowering and translation of the right front insert plate 56, and the lifting and lowering and translation of the right rear insert plate 57 are all driven by cylinders and controlled by a PLC controller. The PLC controller also controls the heating of the rear plate heat-pressing needle 31, the left plate heat-pressing needle 41, and the right plate heat-pressing needle 51. The conveyor belt 6 is driven by a motor and controlled by a PLC controller. The PLC controller's control of the cylinders and their connection to the upper pressure plate 1, rear sealing plate 3, rear upper insert plate 32, rear lower insert plate 34, left sealing plate 4 (translation), left lower insert plate 42, left upper insert plate 44, left front insert plate 46, left rear insert plate 47, right sealing plate 5 (translation), right lower insert plate 52, right upper insert plate 54, right front insert plate 56, and right rear insert plate 57 are existing technologies. The technical solution of this utility model can be obtained simply by setting up the PLC controller conventionally, without involving any improvements to the control methods or software. As for the parameter settings and usage methods of the PLC controller, those skilled in the art can purchase a PLC controller and refer to the accompanying instruction manual to set up the corresponding controls; therefore, they will not be described in detail here.

Claims

1. A napkin packaging apparatus characterized by: The device includes an upper pressure plate, a lower support plate, a rear sealing plate, a left sealing plate, and a right sealing plate. The upper pressure plate is height-adjustable and located directly above the lower support plate. The rear sealing plate is located above and behind the lower support plate, and is height-adjustable and translatable, equipped with multiple rear sealing pins. The left sealing plate is located above and to the left of the lower support plate, and is translatable, equipped with multiple left sealing pins. The right sealing plate is located above and to the right of the lower support plate, and is translatable, equipped with multiple right sealing pins. A paper napkin covered with film at the bottom, front end, and top is pushed onto the lower support plate, and the upper pressure plate holds the paper napkin in place. Between the rear sealing plate and the rear of the paper napkin, there are height-adjustable upper and lower rear insert plates. The upper rear insert plate has multiple upper rear plate notches, and the lower rear insert plate has multiple lower rear plate notches. The upper rear insert is located between the rear sealing plate and the lower rear insert; a lower left insert and an upper left insert are provided between the left sealing plate and the left side of the napkin. The lower left insert has multiple lower left plate notches, and the upper left insert has multiple upper left plate notches. The upper left insert is located between the lower left insert and the left sealing plate. A lower left insert and a left front insert and a left rear insert are provided between the lower left insert and the napkin. A lower right insert and an upper right insert are provided between the right sealing plate and the right side of the napkin. The lower right insert has multiple lower right plate notches, and the upper right insert has multiple upper right plate notches. The upper right insert is located between the lower right insert and the right sealing plate. A lower right insert and a right front insert and a right rear insert are provided between the lower right insert and the napkin.

2. The paper napkin packaging apparatus according to claim 1, characterized by: A conveyor belt is provided in front of the lower support plate.

3. The napkin packaging device according to claim 1 or 2, characterized in that: The upper rear insert plate has seven upper rear plate notches, the lower rear insert plate has seven lower rear plate notches, and the rear sealing heat plate has seven heat-sealing needles.

4. The paper napkin packaging apparatus according to claim 1, characterized by: The lower left insert plate has seven lower left plate notches, the upper left insert plate has seven upper left plate notches, and the left sealing plate has seven left plate hot stamping needles.

5. The paper napkin packaging apparatus according to claim 4, characterized in that: The lower right insert plate has seven lower right plate notches, the upper right insert plate has seven upper right plate notches, and the right sealing plate has seven right plate hot stamping needles.

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