Reciprocating forming mechanism for napkins

Abstract

The utility model relates to a reciprocating forming mechanism for napkins, and belongs to the technical field of napkin production and processing, the reciprocating forming mechanism for napkins comprises a rack, the rack is provided with a discharging tailstock and a knife rest mechanism, the rack is provided with a middle conveying mechanism and a movable edge folding mechanism, and the rack is provided with a side sealing mechanism and a film folding mechanism. According to the reciprocating forming mechanism for the napkins, the middle conveying mechanism, the movable edge folding mechanism, the side sealing mechanism and the film folding mechanism are arranged, so that when the reciprocating forming mechanism for the napkins is adjusted to feed the napkins, the gap between the middle conveying mechanism and the feeding platform is controlled within the range of one millimeter; meanwhile, napkins are completely located in a flat channel formed by the middle conveying pressing plate and the middle conveying transition plate during wrapping forming, it is guaranteed that napkins are packaged and formed smoothly and stably, and a forming channel formed by the middle conveying pressing plate and the middle conveying transition plate is looser than a feeding channel formed by the feeding pressing plate and the feeding platform; and napkins can enter the forming channel more smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of napkin production and processing, in particular to a napkin reciprocating forming mechanism. Background Art

[0002] The production and processing of napkins involves multiple steps and key links to ensure the quality and hygiene standards of the products. Napkin production includes raw material preparation, slurry mixing, molding, calendering and drying, cutting, packaging molding and inspection. Calendering and drying are the process of using a calender to process the paper to make its surface smooth and flat, and to eliminate internal bubbles and defects. Subsequently, the paper passes through a dryer to remove moisture and become usable napkins. Cutting is the process of using the cutter in the cutting machine to cut the napkins into appropriate sizes. Packaging molding is the process of using a packaging machine to wrap the napkins with plastic. Inspection is the process of inspecting the cut napkins to check their appearance, thickness, water absorption and other indicators to ensure that the product quality meets the standard requirements.

[0003] In the current existing technology, the packaging and molding process of napkin production and processing requires the use of a packaging machine to wrap the napkins with plastic. In this process, a conveyor belt is needed to transport the napkins and the plastic packaging film. Since the napkins and the plastic packaging film are light in weight, it is easy to cause the napkin packaging to be unsmooth and unstable during the transportation and packaging process. Therefore, a napkin reciprocating molding mechanism is proposed to solve the above problem. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a reciprocating forming mechanism for napkins, which has the advantages of smooth and stable forming, etc., and solves the problem that the packaging and forming process of napkin production and processing needs to use a packaging machine to wrap the napkins with plastic. In this process, a conveyor belt is needed to transport the napkins and the plastic packaging film. Since the napkins and the plastic packaging film are light in weight, the problem of uneven and unstable napkin packaging during the transportation and packaging process is easily caused.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a napkin paper reciprocating forming mechanism, comprising a frame, the frame is provided with a discharging tail frame and a knife frame mechanism, the frame is provided with a middle feeding mechanism and a movable folding mechanism, the frame is provided with a side sealing mechanism and a film folding mechanism;

[0006] The side sealing mechanism includes a side sealing frame installed on a frame, a lifting and adjusting bracket is fixedly installed on the side sealing frame, a side sealing lifting block is installed on the lifting and adjusting bracket, a side sealing driving assembly for controlling the movement of the side sealing lifting block is arranged on one side of the side sealing frame, two linear bearings are installed on the side sealing frame, an ironing plate adjusting bracket is installed on the side sealing frame, a mounting plate is fixedly installed on the ironing plate adjusting bracket, and a side sealing ironing plate of a heat-sealed packaging film is fixedly installed on the mounting plate.

[0007] Furthermore, the movable folding mechanism includes two connecting plates installed on the frame, the two connecting plates are provided with side seal rocker arm brackets, the side seal rocker arm brackets are provided with two side seal lifting plates, and the frame is provided with a swinging component for controlling the swinging of the side seal rocker arm bracket.

[0008] Furthermore, the film folding mechanism includes a side sealing connector installed on two linear bearings, the frame is provided with a side sealing control assembly for controlling the up and down movement of the side sealing connector, and the top of the side sealing connector is provided with a film folding member for folding the packaging film.

[0009] Furthermore, the intermediate feeding mechanism includes a linear guide rail, a servo motor, two conveying synchronous belts, an intermediate feeding pressure plate, an intermediate feeding transition plate and an intermediate feeding pressure cylinder. The telescopic end of the intermediate feeding pressure cylinder is fixedly connected to the intermediate feeding pressure plate, the two conveying synchronous belts are installed on the frame, and the servo motor is installed on the linear guide rail.

[0010] Furthermore, the side seal drive assembly includes an asynchronous motor, a drive pendulum, a drive spherical bearing and a drive connecting rod. The drive pendulum is fixedly connected to the output shaft of the asynchronous motor, the drive pendulum is connected to the drive connecting rod through the drive spherical bearing, and the drive connecting rod is connected to the side seal lifting block.

[0011] Furthermore, the swing assembly includes a three-phase motor, a swing connection member and a swing connecting rod, the three-phase motor is connected to the swing connection member, and the swing connecting rod is respectively connected to the swing connection member and the side seal swing arm bracket.

[0012] Furthermore, the side seal control assembly includes a control motor, a control connector and a control connecting rod, the control motor is connected to the control connector, and the control connecting rod is respectively connected to the control connector and the side seal connector.

[0013] Furthermore, the ironing plate adjustment frame includes two side plates, support bearings are fixedly installed inside the two side plates, swing shafts are fixedly installed on the inner walls of the two support bearings, the swing shafts are fixedly connected to the mounting plates, and a side sealing cylinder is installed on the side sealing frame, and the telescopic end of the side sealing cylinder is connected to the swing shaft.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The napkin reciprocating forming mechanism is provided with a center feeding mechanism, a movable folding mechanism, a side sealing mechanism and a film folding mechanism, so that the napkin reciprocating forming mechanism can be adjusted so that the gap between the center feeding mechanism and the feeding platform is controlled within a range of one millimeter when the napkin is fed. At the same time, the napkin is completely in a flat channel formed by a center feeding pressing plate and a center feeding transition plate during wrapping and forming, thereby ensuring smooth and stable packaging and forming of the napkin. Moreover, the side sealing ironing plate slightly exceeds the film folding plane, so that the side sealing mechanism does not scrape the center feeding pressing plate when it moves up and down at the center feeding forming position. Moreover, the forming channel formed by the center feeding pressing plate and the center feeding transition plate is looser than the feeding channel formed by the feeding pressing plate and the feeding platform, so that the napkin can enter the forming channel more smoothly, thereby enhancing the practicality of the napkin reciprocating forming mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model Figure 1 A three-dimensional schematic diagram of the movable folding mechanism;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model Figure 1 A three-dimensional schematic diagram of the middle and side sealing mechanism;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model Figure 1 Schematic diagram of the center folding film mechanism.

[0020] In the figure: 1. Frame; 2. Discharging tail frame; 3. Middle feeding mechanism; 4. Knife holder mechanism; 5. Movable folding mechanism; 51. Connecting plate; 52. Side sealing rocker bracket; 53. Side sealing lifting plate; 54. Swinging assembly; 6. Side sealing mechanism; 61. Side sealing frame; 62. Lifting adjustment bracket; 63. Side sealing lifting block; 64. Side sealing driving assembly; 65. Linear bearing; 66. Ironing plate adjustment frame; 67. Mounting plate; 68. Side sealing ironing plate; 7. Film folding mechanism; 71. Side sealing connector; 72. Side sealing control assembly; 73. Film folding part. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4A napkin reciprocating forming mechanism in this embodiment includes a frame 1, a discharging tail frame 2 and a knife frame mechanism 4 are provided on the frame 1, a middle feeding mechanism 3 and a movable folding mechanism 5 are provided on the frame 1, a side sealing mechanism 6 and a film folding mechanism 7 are provided on the frame 1, the knife frame mechanism 4 is installed on the frame 1, and the discharging tail frame 2 is fixedly installed on the frame 1.

[0023] Example 1: Please refer to Figures 1 to 4 In the implementation of this example, the side sealing mechanism 6 includes a side sealing frame 61 installed on the frame 1, a lifting adjustment bracket 62 is fixedly installed on the side sealing frame 61, and a side sealing lifting block 63 is installed on the lifting adjustment bracket 62. A side sealing driving component 64 for controlling the movement of the side sealing lifting block 63 is provided on one side of the side sealing frame 61. The side sealing driving component 64 includes an asynchronous motor, a driving pendulum, a driving joint bearing and a driving connecting rod. The driving pendulum is fixedly connected to the output shaft of the asynchronous motor, the driving pendulum is connected to the driving connecting rod through the driving joint bearing, and the driving connecting rod is connected to the side sealing lifting block 63, so as to facilitate the control of the side sealing mechanism 6 In order to enable up and down movement while avoiding scratches, two linear bearings 65 are installed on the side sealing frame 61, and an ironing plate adjusting frame 66 is installed on the side sealing frame 61, and a mounting plate 67 is fixedly installed on the ironing plate adjusting frame 66. The ironing plate adjusting frame 66 includes two side plates, and support bearings are fixedly installed inside the two side plates. A swing shaft is fixedly installed on the inner peripheral walls of the two support bearings, and the swing shaft is fixedly connected to the mounting plate 67. A side sealing cylinder is installed on the side sealing frame 61, and the telescopic end of the side sealing cylinder is connected to the swing shaft to facilitate the control of the flipping of the mounting plate 67, and a side sealing ironing plate 68 of the heat-sealed packaging film is fixedly installed on the mounting plate 67.

[0024] Among them, the middle feeding mechanism 3 includes a linear guide rail, a servo motor, two conveying synchronous belts, a middle feeding pressure plate, a middle feeding transition plate and a middle feeding pressure cylinder. The telescopic end of the middle feeding pressure cylinder is fixedly connected to the middle feeding pressure plate. The two conveying synchronous belts are installed on the frame 1, and the servo motor is installed on the linear guide rail, which is convenient for controlling the reciprocating movement of the middle feeding mechanism 3 and conveniently using the middle feeding pressure plate and the middle feeding transition plate to form a forming channel.

[0025] By adopting the above technical scheme, the side sealing mechanism 6 moves downward to the hot-sealing position and stops, and the packaging film above the tissue paper is folded downward together with the side sealing mechanism 6 and overlapped with the packaging below, and the side sealing cylinder retracts, pulling the side sealing ironing plate 68 to swing to a suitable position, so that the overlapping packaging film is hot-sealed. After the packaging film is hot-sealed, the film folding mechanism 7 moves downward to the stop position, and the side sealing cylinder extends to make the side sealing ironing plate 68 swing open, and then the side sealing mechanism 6 moves upward to the stop position. After all the actions are in place, the servo motor is used to move the middle feeding mechanism 3 to the feeding position. When the middle feeding mechanism 3 moves to the position of the movable folding mechanism 5, the packaging film that has been hot-sealed is folded into shape, thereby completing a reciprocating motion.

[0026] Example 2: Please refer to Figures 1 to 4 In this embodiment, the movable folding mechanism 5 includes two connecting plates 51 installed on the frame 1, the two connecting plates 51 are provided with side seal rocker brackets 52, the side seal rocker brackets 52 are provided with two side seal lifting plates 53, and the frame 1 is provided with a swinging component 54 for controlling the swinging of the side seal rocker bracket 52.

[0027] Among them, the swing component 54 includes a three-phase motor, a swing connector and a swing connecting rod. The three-phase motor is connected to the swing connector, and the swing connecting rod is respectively connected to the swing connector and the side seal swing rod bracket 52, so as to facilitate the reciprocating motion of the movable folding mechanism 5.

[0028] By adopting the above technical scheme, when the napkin is pushed to the rear end and is flush with the rear end of the middle feed pressing plate and the middle feed transition plate, the conveying synchronous belt stops moving, the middle feed pressing cylinder extends to make the middle feed pressing plate press the napkin wrapped on three sides by the packaging film, and the movable folding mechanism 5 is started. The movable folding mechanism 5 and the middle feed mechanism 3 move to the middle feed forming position synchronously, and the movable folding mechanism 5 moves to the lower film of the convenient packaging film and then stops. The middle feed mechanism 3 continues to move to the forming position and stops. At the same time, the knife holder mechanism 4 pulls the packaging film to an appropriate length and stops waiting for the napkin to be in place to be cut off. The movable folding mechanism 5 retreats to the lower film. When the middle feed mechanism 3 is in the forming position, the conveying synchronous belt starts to send the wrapped napkin in the conveying channel into the discharge tail rack 2 and then stops.

[0029] In the present embodiment, the film folding mechanism 7 includes a side sealing connector 71 installed on two linear bearings 65, and a side sealing control component 72 for controlling the up and down movement of the side sealing connector 71 is arranged on the frame 1. The side sealing control component 72 includes a control motor, a control connector and a control connecting rod. The control motor is connected to the control connector, and the control connecting rod is respectively connected to the control connector and the side sealing connector 71 to facilitate the up and down movement of the film folding mechanism 7. A film folding component 73 for folding the packaging film is arranged on the top of the side sealing connector 71.

[0030] By adopting the above technical solution, when the napkins pass through the lower film position in the frame 1, they are pushed into the forming channel formed by the middle feed pressing plate and the middle feed transition plate together with the packaging film pulled to a suitable length and cut by the knife holder mechanism 4. At the same time, the conveying synchronous belt is started, and the napkins begin to enter the forming channel. The rear end of the packaging film is folded and formed by the film folding member 73, and the upper package of napkins that has been wrapped at the middle feed transition plate is pushed by the next package of napkins and moves synchronously with the conveying synchronous belt.

[0031] The working principle of the above embodiment is:

[0032] When the napkin reciprocating forming mechanism is in use, when the napkin passes through the lower film position in the frame 1, it is pushed into the forming channel formed by the middle feeding pressing plate and the middle feeding transition plate together with the packaging film pulled to a suitable length and cut by the knife holder mechanism 4, and at the same time, the conveying synchronous belt is started, and the napkin begins to enter the forming channel, and the rear end of the packaging film is folded and formed by the film folding member 73, and the upper package of napkins that is wrapped at the middle feeding transition plate is pushed by the next package of napkins and moves synchronously with the conveying synchronous belt;

[0033] When the napkin is pushed to the rear end and is flush with the rear end of the middle feeding pressing plate and the middle feeding transition plate, the conveying synchronous belt stops moving, the middle feeding pressing cylinder extends to make the middle feeding pressing plate press the napkin wrapped on three sides by the packaging film, and the movable folding mechanism 5 is started. The movable folding mechanism 5 and the middle feeding mechanism 3 move synchronously to the middle feeding forming position, and the movable folding mechanism 5 moves to the lower film of the convenient packaging film and then stops. The middle feeding mechanism 3 continues to move to the forming position and stops. At the same time, the knife holder mechanism 4 pulls the packaging film to a suitable length and stops waiting for the napkin to be in place and cuts it off. The movable folding mechanism 5 retreats to the lower film. When the middle feeding mechanism 3 is in the forming position, the conveying synchronous belt starts to send the wrapped napkin in the conveying channel into the discharge tail rack 2 and then stops.

[0034] The film folding mechanism 7 moves upward to a suitable position and stops, the film folding piece 73 folds the packaging film below the napkin upward, the side sealing mechanism 6 moves downward to the hot-sealing position and stops, the packaging film above the napkin is folded downward together with the side sealing mechanism 6 and overlaps with the packaging below, the side sealing cylinder retracts, pulling the side sealing ironing plate 68 to swing to a suitable position to heat-seal the overlapping packaging film, after the packaging film is hot-sealed, the film folding mechanism 7 moves downward to a stop position, the side sealing cylinder extends to make the side sealing ironing plate 68 swing open, and then the side sealing mechanism 6 moves upward to a stop position. After all the actions are in place, the servo motor is used to move the middle feeding mechanism 3 to the feeding position. When the middle feeding mechanism 3 moves to the position of the movable folding mechanism 5, the packaging film that has been hot-sealed is folded into shape, thereby completing a reciprocating motion.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A napkin paper reciprocating forming mechanism, comprising a frame (1), characterized in that: The frame (1) is provided with a discharge tail frame (2) and a knife frame mechanism (4), the frame (1) is provided with a center feeding mechanism (3) and a movable folding mechanism (5), and the frame (1) is provided with a side sealing mechanism (6) and a film folding mechanism (7); The side sealing mechanism (6) comprises a side sealing frame (61) mounted on a frame (1), a lifting adjustment bracket (62) fixedly mounted on the side sealing frame (61), a side sealing lifting block (63) mounted on the lifting adjustment bracket (62), a side sealing driving assembly (64) for controlling the movement of the side sealing lifting block (63) is provided on one side of the side sealing frame (61), two linear bearings (65) are mounted on the side sealing frame (61), an ironing plate adjusting frame (66) is mounted on the side sealing frame (61), a mounting plate (67) fixedly mounted on the ironing plate adjusting frame (66), and a side sealing ironing plate (68) of a heat-sealed packaging film is fixedly mounted on the mounting plate (67).

2. A napkin paper reciprocating forming mechanism according to claim 1, characterized in that: The movable folding mechanism (5) comprises two connecting plates (51) mounted on a frame (1); side seal swing rod brackets (52) are arranged on the two connecting plates (51); two side seal lifting plates (53) are arranged on the side seal swing rod bracket (52); and a swing assembly (54) for controlling the swing of the side seal swing rod bracket (52) is arranged on the frame (1).

3. A napkin paper reciprocating forming mechanism according to claim 1, characterized in that: The film folding mechanism (7) comprises a side sealing connection member (71) mounted on two linear bearings (65); a side sealing control assembly (72) for controlling the up and down movement of the side sealing connection member (71) is arranged on the frame (1); and a film folding member (73) for folding the packaging film is arranged on the top of the side sealing connection member (71).

4. A napkin paper reciprocating forming mechanism according to claim 1, characterized in that: The intermediate feeding mechanism (3) comprises a linear guide rail, a servo motor, two conveying synchronous belts, an intermediate feeding pressing plate, an intermediate feeding transition plate and an intermediate feeding pressing cylinder, the telescopic end of the intermediate feeding pressing cylinder is fixedly connected to the intermediate feeding pressing plate, the two conveying synchronous belts are mounted on the frame (1), and the servo motor is mounted on the linear guide rail.

5. A napkin paper reciprocating forming mechanism according to claim 1, characterized in that: The side seal driving assembly (64) comprises an asynchronous motor, a driving pendulum, a driving spherical bearing and a driving connecting rod, wherein the driving pendulum is fixedly connected to the output shaft of the asynchronous motor, the driving pendulum is connected to the driving connecting rod via the driving spherical bearing, and the driving connecting rod is connected to the side seal lifting block (63).

6. A napkin paper reciprocating forming mechanism according to claim 2, characterized in that: The swing assembly (54) comprises a three-phase motor, a swing connection piece and a swing connecting rod, wherein the three-phase motor is connected to the swing connection piece, and the swing connecting rod is respectively connected to the swing connection piece and the side seal swing rod bracket (52).

7. A napkin paper reciprocating forming mechanism according to claim 3, characterized in that: The side seal control assembly (72) comprises a control motor, a control connecting piece and a control connecting rod, the control motor is connected to the control connecting piece, and the control connecting rod is respectively connected to the control connecting piece and the side seal connecting piece (71).

8. The napkin reciprocating forming mechanism according to claim 1, characterized in that: The ironing plate adjustment frame (66) includes two side plates, and support bearings are fixedly installed inside the two side plates. The inner peripheral walls of the two support bearings are fixedly installed with swing shafts, and the swing shafts are fixedly connected to the mounting plate (67). A side sealing cylinder is installed on the side sealing frame (61), and the telescopic end of the side sealing cylinder is connected to the swing shaft.

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