Sealing machine for envelope bag production

Abstract

The utility model discloses a sealing machine for envelope bag production, and relates to the technical field of envelope bag production equipment, in particular to a sealing machine for envelope bag production, which comprises a support frame and a table plate fixedly mounted on the support frame. The conveying part, the glue brushing part, the bonding part and the control part are all arranged on the table plate; envelope paper is adsorbed and fixed through the adsorption assembly, and the adsorption assembly is driven by the driving assembly to move on the table plate, so that the envelope paper moves on the table plate; when the envelope paper moves to the glue brushing component, the glue brushing component is used for brushing glue on the envelope paper, after glue brushing, the envelope paper moves to the bonding component under the cooperation of the adsorption component and the driving component, the bonding component is used for conducting edge folding and bonding on the envelope paper to form an envelope bag, and the purpose of automatically and efficiently producing the envelope bag is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of envelope bag production equipment, and specifically relates to an envelope bag production sealing machine. BACKGROUND

[0002] When the envelope bag is sealed, glue needs to be applied at the sealing position, and then the sealing position is folded and bonded at the glue application position. After that, the folded sealing position is compacted. At present, the sealing operation of the envelope bag is usually completed by manual operation, which consumes a high labor cost and has low efficiency. In order to solve the defects of manual operation, some manufacturers begin to use automatic sealing machines to realize sealing. These automatic sealing machines can usually improve efficiency and reduce labor cost. However, since the envelope bag is usually soft, when the envelope bag is conveyed along the glue application station and the folding station by the conveying belt, the envelope bag cannot be well positioned above. When the sealing position of the envelope bag is folded, the envelope bag will be displaced in the width direction of the conveying belt under the pushing of the folding mechanism on the folding station, which causes the envelope bag to be deformed by being pressed by the side plate of the belt conveying mechanism, thereby affecting the quality of the envelope bag.

[0003] In the disclosed Chinese patent application with the publication number CN221367877U and the patent name Automatic Envelope Bag Sealing Machine, in the process of sealing the envelope bag, the envelope bag sequentially passes through the glue application station, the edge turning station, and the sealing station. The elastic member is arranged to push the compression wheel downward, so that the compression wheel can cooperate with the support surface of the conveying mechanism to clamp the envelope bag. In this way, when the glue is applied, the edge is turned, and the sealing is performed, the envelope bag can be effectively prevented from being pushed in the width direction of the conveying mechanism, and the envelope bag can be prevented from being deformed by being pressed. At the same time, the compression wheel is arranged in an elastic floating structure, which ensures that the conveying mechanism can normally and continuously convey the envelope bag, thereby improving the sealing efficiency of the envelope bag. Although this prior art can solve the above problems, it still has certain limitations in the specific implementation process. The conveying mechanism in this prior art uses a belt (conveying belt) to convey the envelope paper. Since the envelope paper is light in weight, it is easily affected by wind blowing and mechanical touching, and the envelope paper is easily displaced during conveying, which causes the glue to be unable to be effectively brushed to the specified position of the envelope paper during subsequent glue brushing, thereby affecting the processing quality of the envelope bag. UTILITY MODEL CONTENTS

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides an envelope bag production sealing machine, which solves the problems raised in the above background art.

[0006] (II) Technical scheme

[0007] In order to achieve the above object, the utility model discloses a sealing machine for envelope bag production, including support frame, table board, the table board fixed mounting is in support frame, still including conveying part, glue brushing part, adhesive part and control part, conveying part, glue brushing part, adhesive part, control part all are arranged on the table board, control part respectively with conveying part, glue brushing part, adhesive part control connection, conveying part includes drive assembly, adsorption component, drive assembly includes support plate, adsorption component includes vacuum generator, sucking disc, servo electric cylinder, servo electric cylinder fixed mounting is at the lower surface of support plate, the sucking disc fixed mounting is at the output shaft end end head of servo electric cylinder, vacuum generator installs on the support plate, and the vacuum generation end of vacuum generator is communicated with sucking disc through the pipe, glue brushing part includes first glue brushing subassembly, second glue brushing subassembly, first glue brushing subassembly includes first three axle air cylinder, first cotton brush, and the first cotton brush fixed mounting is at the output shaft end of first three axle air cylinder, and second glue brushing subassembly includes second three axle air cylinder, second cotton brush, and the second cotton brush fixed mounting is at the output shaft end of second three axle air cylinder, adhesive part includes pressing subassembly and three edge folding subassembly.

[0008] Optionally, the upper surface of the table board is fixedly connected with four blocking strips, and the four blocking strips form a placing position therebetween.

[0009] Optionally, the drive assembly includes a guide rail, a servo motor, a sliding block, and a lead screw. The guide rail and the servo motor are fixedly installed on the table board. The sliding block is slidingly arranged on the guide rail. The lead screw is arranged in the interior of the guide rail and is rotatably connected to the guide rail at both ends. The middle part of the lead screw penetrates the sliding block and is threadedly connected thereto. The output shaft end of the servo motor is drivingly connected to one end of the lead screw. A support column is fixedly installed on the sliding block, and the upper end of the support column is fixedly connected to one end of the support plate.

[0010] Optionally, the glue brushing part further includes a support table, and a glue groove is formed in the support table. The first glue brushing subassembly and the second glue brushing subassembly are both installed on the support table.

[0011] Optionally, the second glue brushing subassembly further includes a second air cylinder, and the second air cylinder is fixedly installed on the support table. The second three axle air cylinder is fixedly installed on the output shaft end head of the second air cylinder.

[0012] Optionally, the pressing subassembly includes a ninety-degree angle air cylinder and a pressing plate. The ninety-degree angle air cylinder is fixedly installed on the table board. The pressing plate is fixedly installed on the output shaft of the ninety-degree angle air cylinder.

[0013] Optionally, the three folding assembly are respectively a first folding assembly, a second folding assembly and a third folding assembly; the first folding assembly comprises a third three-axis cylinder and a first push plate, the first push plate is fixedly installed at the output shaft end of the third three-axis cylinder; the second folding assembly comprises a fourth three-axis cylinder and a second push plate, the second push plate is fixedly installed at the output shaft end of the fourth three-axis cylinder; the third folding assembly comprises a fifth three-axis cylinder and a third push plate, the third push plate is fixedly installed at the output shaft end of the fifth three-axis cylinder.

[0014] (Three) beneficial effects

[0015] The utility model provides a sealing machine for envelope bag production has the following beneficial effects:

[0016] The sealing machine for envelope bag production cooperatively sets up the table board, the conveying component, the glue brushing component and the adhesion component, and has the effect of brushing glue on the envelope paper and adhesion to form the envelope bag, the envelope paper is fixed by the adsorption assembly, and the adsorption assembly is driven by the driving assembly to move on the table board, so that the envelope paper moves on the table board, the envelope paper is brushed glue by the glue brushing component when moving to the glue brushing component, and the envelope paper moves to the adhesion component under the cooperation of the adsorption assembly and the driving assembly after brushing glue, and the adhesion component is used to adhesion to form the envelope bag, which realizes the purpose of automatic and efficient production of the envelope bag. Compared with the prior art, the envelope paper is fixed by the adsorption assembly, the adsorption assembly is driven by the driving assembly to move, so that the position of the envelope paper is moved, the possibility of deviation of the envelope paper during movement can be effectively avoided, and the precision of the position movement of the envelope paper is improved. ACCURACY

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only the embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained without the creative labor on the premise of providing the drawings.

[0018] Figure 1 It is a three-dimensional structure schematic diagram (state when extracting envelope paper) of the utility model;

[0019] Figure 2 It is a three-dimensional structure schematic diagram (state when brushing glue operation) of the utility model;

[0020] Figure 3 It is a three-dimensional structure schematic diagram (state when adhesion operation) of the utility model;

[0021] Figure 4 It is the three-dimensional structure schematic view of the servo motor cylinder in the utility model;

[0022] Figure 5 It is the three-dimensional structure schematic view of the glue brushing part in the utility model;

[0023] Figure 6 It is the three-dimensional structure schematic view of the support table in the utility model;

[0024] Figure 7 It is the three-dimensional structure schematic view of the adhesion part in the utility model;

[0025] Figure 8 It is the sectional structure schematic view of the track in the utility model;

[0026] Figure 9 It is the three-dimensional structure schematic view of the envelope paper in the unfolded state.

[0027] In the drawing: 1, table plate; 2, support frame; 3, guide rail; 4, servo motor; 5, sliding block; 6, screw rod; 7, support column; 8, support plate; 9, vacuum generator; 10, guide rod; 11, control panel; 12, envelope paper; 1201, first glue brushing area; 1202, second glue brushing area; 13, servo motor cylinder; 14, suction cup; 15, baffle; 16, support table; 17, first air cylinder; 18, first three-axis air cylinder; 19, first wool brush; 20, glue groove; 21, second air cylinder; 22, second three-axis air cylinder; 23, second wool brush; 24, third three-axis air cylinder; 25, first push plate; 26, fourth three-axis air cylinder; 27, second push plate; 28, fifth three-axis air cylinder; 29, third push plate; 30, ninety-degree angle air cylinder; 31, pressing plate. DETAILED DESCRIPTION

[0028] The technical scheme of the utility model will be described clearly and completely in combination with the drawings. In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0030] Please see Figures 1 to 9 This utility model provides a technical solution: a sealing machine for producing envelopes, including a support frame 2 and a table 1, with the table 1 fixedly installed on the support frame 2. The sealing machine also includes a conveying component, a glue-applying component, an adhesive-gluing component, and a control component. The conveying component, glue-applying component, adhesive-gluing component, and control component are all mounted on the table 1, and the control component is connected to the conveying component, glue-applying component, and adhesive-gluing component for control.

[0031] The system comprises three components: a conveying unit for transporting envelope paper and a gluing unit for applying adhesive to the envelope paper; and a bonding unit for folding and bonding the envelope paper to form an envelope bag. A control unit controls the conveying, gluing, and bonding units to achieve automated control. The control unit includes a control board, which may include, but is not limited to, a programmable logic controller (PLC). The control board contains logic control programs, timing control programs, and other software programs to meet the needs of automated control. The control board is connected to the conveying, gluing, and bonding units for control purposes.

[0032] Four baffles 15 are fixedly connected to the upper surface of the tabletop 1. The four baffles 15 form a placement position. Multiple stacked envelopes 12 are placed on the tabletop 1 at the placement position.

[0033] Four baffles 15 are vertically fixed to the upper surface of the tabletop 1, serving to separate the multiple vertically stacked envelopes 12. The placement area is used to store the multiple stacked envelopes 12, as shown in the reference section. Figure 4 .

[0034] The conveying component includes a driving assembly and an adsorbing assembly. The driving assembly includes a support plate 8. The adsorbing assembly includes a vacuum generator 9, a suction cup 14 and a servo electric cylinder 13. The servo electric cylinder 13 is fixedly installed on the lower surface of the support plate 8. The suction cup 14 is fixedly installed on the output shaft end of the servo electric cylinder 13. The vacuum generator 9 is installed on the support plate 8. The vacuum generation end of the vacuum generator 9 is communicated with the suction cup 14 through a conduit. The adsorbing assembly further includes a guide rod 10. The upper end of the guide rod 10 penetrates through the support plate 8 and is slidably connected with the support plate 8. The lower end of the guide rod 10 is fixedly connected with the base of the suction cup 14.

[0035] wherein, referring to Figure 1 and Figure 4 , the driving component is used for driving the adsorbing assembly to move. The adsorbing assembly is used for adsorbing and fixing the envelope paper 12. The control panel is respectively in control connection (including electrical connection) with the vacuum generator 9 and the servo electric cylinder 13. The control panel controls the start-stop operation of the vacuum generator 9. The control panel controls the start-stop operation of the servo electric cylinder 13. The servo electric cylinder 13 is used for driving the suction cup 14 to move up and down. After the output shaft of the servo electric cylinder 13 is stretched out, the output shaft of the servo electric cylinder 13 pushes the suction cup 14 to move to the envelope paper 12, so that the suction cup 14 abuts against the envelope paper 12. The control panel controls the vacuum generator 9 to start. The vacuum generator 9 draws out the air inside the suction cup 14 through the conduit, so that the inside of the suction cup 14 is in a vacuum state. The suction cup 14 adsorbs the envelope paper 12, thereby adsorbing and fixing the envelope paper 12.

[0036] Specifically, the driving assembly includes a guide rail 3, a servo motor 4, a sliding block 5 and a lead screw 6. The guide rail 3 and the servo motor 4 are fixedly installed on the table plate 1. The sliding block 5 is slidably arranged on the guide rail 3. The lead screw 6 is arranged in the interior of the guide rail 3 and is rotatably connected with the guide rail 3 at both ends. The middle part of the lead screw 6 penetrates through the sliding block 5 and is threadedly connected with the sliding block 5. The output shaft end of the servo motor 4 is in transmission connection with one end of the lead screw 6. The support column 7 is fixedly installed on the sliding block 5. The upper end of the support column 7 is fixedly connected with one end of the support plate 8.

[0037] wherein, referring to Figure 1 and Figure 8 , the control panel 11 is in control connection (including electrical connection) with the servo motor 4. The control panel 11 controls the start-stop operation of the servo motor 4. The lead screw 6 and the sliding block 5 jointly constitute a ball screw pair. After the control panel 11 controls the servo motor 4 to start, the output shaft of the servo motor 4 drives the lead screw 6 to rotate. The lead screw 6 pushes the sliding block 5 which is threadedly connected with the lead screw 6 to move. The sliding block 5 moves along the guide rail 3 in the transverse direction. The sliding block 5 drives the support column 7 to move. The support column 7 drives the support plate 8 to move. The driving component drives the envelope paper 12 to move to the glue brushing component and the adhesion component.

[0038] The glue brushing component comprises a first glue brushing assembly and a second glue brushing assembly, and further comprises a support table 16, wherein a glue groove 20 is formed in the support table 16, and the first glue brushing assembly and the second glue brushing assembly are both mounted on the support table 16. The glue groove 20 of the support table 16 is filled with glue liquid.

[0039] The first glue brushing assembly and the second glue brushing assembly are respectively connected with a control panel. Figure 9 The envelope paper 12 is provided with a first glue brushing area 1201 and a second glue brushing area 1202, the first glue brushing assembly is used for brushing glue on the first glue brushing area 1201 of the envelope paper 12, and the second glue brushing assembly is used for brushing glue on the second glue brushing area 1202 of the envelope paper 12.

[0040] The first glue brushing assembly comprises a first three-axis cylinder 18 and a first cotton brush 19, and the first cotton brush 19 is fixedly mounted on the output shaft end of the first three-axis cylinder 18. The first glue brushing assembly further comprises a first cylinder 17, which is fixedly mounted on the support table 16, and the first three-axis cylinder 18 is fixedly mounted on the output shaft end of the first cylinder 17.

[0041] The first glue brushing assembly and the second glue brushing assembly are respectively connected with a control panel. Figure 2 The control panel controls the output shaft extension and contraction of the first three-axis cylinder 18 and the first cylinder 17. Figure 5 The first cylinder 17 is used for driving the horizontal movement of the first three-axis cylinder 18, and the first three-axis cylinder 18 is used for driving the vertical movement of the first cotton brush 19. The output shaft extension and contraction of the first cylinder 17 drives the movement of the first three-axis cylinder 18, and the first three-axis cylinder 18 can be located above the glue groove 20 or above the first glue brushing area 1201 of the envelope paper 12. The output shaft extension and contraction of the first three-axis cylinder 18 drives the vertical movement of the first cotton brush 19, and the first cotton brush 19 is located in the glue groove 20 or at the first glue brushing area 1201 of the envelope paper 12 after movement. After the first cotton brush 19 abuts against the first glue brushing area 1201 of the envelope paper 12, the glue liquid on the first cotton brush 19 is brushed onto the first glue brushing area 1201.

[0042] The second glue brushing assembly comprises a second three-axis cylinder 22 and a second cotton brush 23, and the second cotton brush 23 is fixedly mounted on the output shaft end of the second three-axis cylinder 22. The second glue brushing assembly further comprises a second cylinder 21, which is fixedly mounted on the support table 16, and the second three-axis cylinder 22 is fixedly mounted on the output shaft end of the second cylinder 21.

[0043] The control board 11 is connected to the second three-axis cylinder 22 and the second cylinder 21, respectively, and controls the extension and retraction of the output shafts of the second three-axis cylinder 22 and the second cylinder 21. The second cylinder 21 drives the lateral movement of the second three-axis cylinder 22, and the second three-axis cylinder 22 drives the longitudinal movement of the second cotton brush 23. The extension and retraction of the output shaft of the second cylinder 21 drives the second three-axis cylinder 22 to move, and the second three-axis cylinder 22 can move to a position above the glue tank 20 or above the second glue application area 1202 of the envelope paper 12. The extension and retraction of the output shaft of the second three-axis cylinder 22 drives the second cotton brush 23 to move longitudinally, and the second cotton brush 23 is positioned in the glue tank 20 or at the second glue application area 1202 of the envelope paper 12 after movement. After the second cotton brush 23 comes into contact with the second glue application area 1202 of the envelope paper 12, the glue on the second cotton brush 23 is brushed onto the second glue application area 1202.

[0044] The adhesive components include a pressing assembly and three folding assemblies.

[0045] The pressing component is used to press the envelope paper 12, fixing it to the tabletop 1. The three folding components are used to fold and glue the three sides of the envelope paper 12.

[0046] Specifically, the pressing assembly includes a 90-degree angle cylinder 30 and a pressure plate 31. The 90-degree angle cylinder 30 is fixedly installed on the table 1, and the pressure plate 31 is fixedly installed on the output shaft of the 90-degree angle cylinder 30.

[0047] Among them, reference Figure 7 The control board is connected to the 90-degree angle cylinder 30, and controls the start and stop of the 90-degree angle cylinder 30. The pressure plate 31 is relatively thin. After the 90-degree angle cylinder 30 is started, the output shaft of the 90-degree angle cylinder 30 drives the pressure plate 31 to rotate 90 degrees clockwise.

[0048] More specifically, the three folding components are a first folding component, a second folding component, and a third folding component. The first folding component includes a third three-axis cylinder 24 and a first push plate 25. The first push plate 25 is fixedly mounted on the output shaft end of the third three-axis cylinder 24, which is fixedly mounted on the tabletop 1. The second folding component includes a fourth three-axis cylinder 26 and a second push plate 27. The second push plate 27 is fixedly mounted on the output shaft end of the fourth three-axis cylinder 26, which is fixedly mounted on the tabletop 1. The third folding component includes a fifth three-axis cylinder 28 and a third push plate 29. The third push plate 29 is fixedly mounted on the output shaft end of the fifth three-axis cylinder 28, which is fixedly mounted on the tabletop 1.

[0049] Three edge folding assemblies are respectively arranged at the three side edges of the envelope paper 12, and the three edge folding assemblies respectively fold and bond the three side edges of the envelope paper 12.

[0050] After the fifth three-axis cylinder 28 is started, the output shaft of the fifth three-axis cylinder 28 drives the third push plate 29 to move to the side where the envelope paper 12 is located, and the third push plate 29 pushes the first side edge of the envelope paper 12 to fold.

[0051] After the third three-axis cylinder 24 is started, the output shaft of the third three-axis cylinder 24 drives the first push plate 25 to move to the side where the envelope paper 12 is located, and the first push plate 25 pushes the second side edge of the envelope paper 12 to fold, and the first glue brushing area 1201 on the second side edge of the envelope paper 12 is pasted on the back of the second side edge.

[0052] After the fourth three-axis cylinder 26 is started, the output shaft of the fourth three-axis cylinder 26 drives the second push plate 27 to move to the side where the envelope paper 12 is located, and the second push plate 27 pushes the third side edge of the envelope paper 12 to fold, and the second glue brushing area 1202 on the third side edge of the envelope paper 12 is pasted on the back of the first side edge and the second side edge, so as to realize the edge folding and bonding of the envelope paper, that is, the sealing operation of the envelope bag.

[0053] The sealing machine for envelope bag production shown in the technical solution further comprises other components and electrical elements, such as solenoid valves, to meet the needs of automatic control of the equipment.

[0054] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, and all of them should be covered in the protection scope of the present application.

Claims

1. A sealing machine for producing envelopes, comprising a support frame (2) and a table (1), wherein the table (1) is fixedly mounted on the support frame (2); characterized in that: It also includes a conveying component, a glue-applying component, an adhesive component, and a control component. The conveying component, the glue-applying component, the adhesive component, and the control component are all mounted on the table (1). The control component is connected to the conveying component, the glue-applying component, and the adhesive component for control. The conveying component includes a driving assembly and an adsorption assembly. The driving assembly includes a support plate (8). The adsorption assembly includes a vacuum generator (9), a suction cup (14), and a servo electric cylinder (13). The servo electric cylinder (13) is fixedly installed on the lower surface of the support plate (8). The suction cup (14) is fixedly installed on the output shaft end of the servo electric cylinder (13). The vacuum generator (9) is installed on the support plate (8). The vacuum generating end of the vacuum generator (9) is connected to the suction cup (14) through a conduit. The adhesive application component includes a first adhesive application assembly and a second adhesive application assembly. The first adhesive application assembly includes a first three-axis cylinder (18) and a first cotton brush (19), with the first cotton brush (19) fixedly installed at the output shaft end of the first three-axis cylinder (18). The second adhesive application assembly includes a second three-axis cylinder (22) and a second cotton brush (23), with the second cotton brush (23) fixedly installed at the output shaft end of the second three-axis cylinder (22). The adhesive component includes a pressing assembly and three folding assemblies.

2. The sealing machine for producing envelopes according to claim 1, characterized in that: Four baffles (15) are fixedly connected to the upper surface of the table (1), and the four baffles (15) form a placement position. Multiple stacked envelopes (12) are placed on the table (1) and at the placement position.

3. A sealing machine for producing envelopes according to claim 1, characterized in that: The drive assembly includes a guide rail (3), a servo motor (4), a sliding block (5), and a lead screw (6). The guide rail (3) and the servo motor (4) are fixedly mounted on the table (1). The sliding block (5) is slidably mounted on the guide rail (3). The lead screw (6) passes through the inside of the guide rail (3), and both ends of the lead screw (6) are rotatably connected to the guide rail (3). The middle part of the lead screw (6) passes through the sliding block (5), and the two are threadedly connected. The output shaft end of the servo motor (4) is connected to one end of the lead screw (6). A support column (7) is fixedly mounted on the sliding block (5), and the upper end of the support column (7) is fixedly connected to one end of the support plate (8).

4. A sealing machine for producing envelopes according to claim 1, characterized in that: The glue application component also includes a support platform (16), on which a glue groove (20) is provided. The first glue application component and the second glue application component are both installed on the support platform (16). The first glue application component also includes a first cylinder (17), which is fixedly installed on the support platform (16). The first three-axis cylinder (18) is fixedly installed at the output shaft end of the first cylinder (17).

5. A sealing machine for producing envelopes according to claim 4, characterized in that: The second adhesive application assembly also includes a second cylinder (21), which is fixedly mounted on the support platform (16), and the second three-axis cylinder (22) is fixedly mounted on the output shaft end of the second cylinder (21).

6. A sealing machine for producing envelopes according to claim 1, characterized in that: The pressing assembly includes a 90-degree angle cylinder (30) and a pressure plate (31). The 90-degree angle cylinder (30) is fixedly installed on the table (1), and the pressure plate (31) is fixedly installed on the output shaft of the 90-degree angle cylinder (30).

7. A sealing machine for producing envelopes according to claim 6, characterized in that: The three folding components are a first folding component, a second folding component, and a third folding component; the first folding component includes a third three-axis cylinder (24) and a first push plate (25), the first push plate (25) being fixedly installed at the output shaft end of the third three-axis cylinder (24); the second folding component includes a fourth three-axis cylinder (26) and a second push plate (27), the second push plate (27) being fixedly installed at the output shaft end of the fourth three-axis cylinder (26); the third folding component includes a fifth three-axis cylinder (28) and a third push plate (29), the third push plate (29) being fixedly installed at the output shaft end of the fifth three-axis cylinder (28).

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