A thermoplastic sealing machine for glass water production

Abstract

The present invention discloses a thermoplastic sealing machine for producing glass water, which relates to the field of thermoplastic sealing machines. The machine comprises a gantry, a first cylinder, a fixed frame, and a paper box. The first cylinder is symmetrically fixed to the gantry, the fixed frame is fixed to the output end of the first cylinder, a paper box is arranged below the fixed frame, and the paper box is transported by a conveying mechanism, a gluing mechanism is symmetrically fixed to the fixed frame, and a first edge pressing mechanism is symmetrically fixed to the fixed frame. The gluing mechanism comprises a second cylinder, a fixed plate, a convex tooth plate, a pressure plate, a mounting frame, a crossbar, a first spring, a gear, and a glue injection nozzle, and the second cylinder is fixed to the fixed frame. The thermoplastic sealing machine for producing glass water uses an edge pressing mechanism in conjunction with a rotary gluing mechanism. During the sealing process, more glue can be applied to the limited length of the short cover of the paper box, thereby ensuring the stability of the bonding between the short cover and the long cover after the paper box is sealed.

Description

Technical Field

[0001] The invention relates to the technical field of thermoplastic case sealing machines, in particular to a thermoplastic case sealing machine for producing glass water. Background Art

[0002] A thermoplastic carton sealer (hot melt adhesive carton sealer) is an automated packaging machine used for sealing cartons during the glass water production process. It applies hot melt adhesive to the carton's seal and then seals the carton. It primarily consists of a heating device, glue gun, control device, and conveyor belt. As cartons pass by, the heating device heats the hot melt adhesive to its melting point. The glue gun applies the melted hot melt adhesive to the carton's seal, and the sealing mechanism then presses the carton's seal tightly until the hot melt adhesive cools and solidifies.

[0003] In actual use, the existing thermoplastic carton sealing machine (hot melt adhesive carton sealing machine) mainly applies hot melt adhesive on the short cover of the carton through a glue gun, and the glue liquid is a straight line. However, due to the limited length of the short cover of the carton, the amount of hot melt adhesive on the short cover of the carton is small, which leads to poor stability of the bonding between the short cover and the long cover of the carton when the sealing mechanism presses and bonds them together in the later stage. Therefore, in response to the above problems, a thermoplastic carton sealing machine for glass water production is designed. Summary of the Invention

[0004] The purpose of the present invention is to provide a thermoplastic sealing machine for glass water production to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a thermoplastic sealing machine for glass water production, comprising a gantry, a first cylinder, a fixed frame and a paper box, the gantry is symmetrically fixed with the first cylinder front and back, the output end of the first cylinder is fixed with the fixed frame, a paper box is arranged below the fixed frame, and the paper box is transported by a conveying mechanism, a gluing mechanism is symmetrically fixed on the fixed frame left and right, a first edge pressing mechanism is symmetrically fixed on the fixed frame front and back, the gluing mechanism comprises a second cylinder, a fixed plate, a convex tooth plate, a pressure plate, a mounting frame, a cross bar, a first spring, a gear and a glue injection nozzle, the second cylinder is fixed on the fixed frame, the output end of the second cylinder is fixed with the fixed plate, a convex tooth plate is fixed on the fixed plate, a pressure plate is fixed below the convex tooth plate, and an inclined surface structure is provided at the end of the pressure plate away from the convex tooth plate, and the outer side of the convex tooth plate A mounting frame is provided, wherein a cross bar is fixed on the mounting frame, and the cross bar and the fixed plate are slidably connected, and a first spring is fixed between the fixed plate and the mounting frame, and a gear is symmetrically fixed on the mounting frame front and back, and the gear and the convex tooth plate are meshed and connected, and a glue injection nozzle is fixed on the gear, and the glue injection nozzle is connected to the hot melt glue box through a conduit and a pump, and the lower end surface of the glue injection nozzle is higher than the lower end surface of the pressing plate. When the carton is transported to the sealing position by the conveying mechanism, the fixed frame and the gluing mechanism are driven downward to a suitable position by the first cylinder. At this time, the convex tooth plate, the pressing plate and the mounting frame are driven to move, and the short cover of the carton is contacted by the pressing plate to realize folding of the short cover until the mounting frame contacts the carton to a limit. At this time, the second cylinder continues to drive the convex tooth plate to move, and cooperates with the transmission action between the convex tooth plate and the convex tooth plate to make the glue injection nozzle rotate and spray glue.

[0006] Preferably, four arc blocks are fixed on the fixing frame symmetrically, and the lower end faces of the arc blocks are semicircular structures. Through the action of the arc blocks, basic guarantees can be provided for pressing the long cover and the short cover of the paper box.

[0007] Preferably, the first edge pressing mechanism includes a third cylinder, a fixed frame, a movable frame, a pressure roller, a vertical rod, a circular plate, a convex shaft and a second spring. The third cylinder is fixed on the fixed frame, and the output end of the third cylinder is fixed with the fixed frame, and a movable frame is provided below the fixed frame. At the same time, the bearing on the movable frame is connected to the pressure roller. The pressure roller is driven to move by the third cylinder to realize the pressing effect of the long cover and the short cover of the paper box, thereby ensuring the normal sealing operation of the paper box.

[0008] Preferably, vertical rods are fixed symmetrically on the upper end surface of the movable frame, and the vertical rods are slidably connected to the fixed frame. When the movable frame moves relative to the fixed frame, the sliding guide effect between the vertical rods and the fixed frame can ensure the stability of the movable frame's movement.

[0009] Preferably, a circular plate is fixed on the vertical rod, and a convex shaft is fixed on the upper end of the circular plate, and the convex shaft and the arc surface block are slidably connected, and the convex shaft and the arc surface block are distributed one to one. When the movable frame moves and synchronously drives the convex shaft to move, the sliding action between the convex shaft and the arc surface block can provide a basic force for the further downward movement of the movable frame and the pressure roller, thereby ensuring the pressing effect of the pressure roller on the long cover and the short cover of the paper box.

[0010] Preferably, one end of a second spring is fixed on the circular plate, and the other end of the second spring is fixed on the fixed frame. The elastic action of the second spring can provide a basic force for the automatic reset of the movable frame to ensure the normal operation of the device.

[0011] Preferably, a second edge pressing mechanism is also fixed on the fixed frame, and the second edge pressing mechanism is symmetrically distributed on the left and right about the center line of the fixed frame, and the distance between the two second edge pressing mechanisms on the left and right is greater than the length of the paper box. Through the action of the second edge pressing mechanism, the short cover of the paper box can be positioned when the long cover and the short cover of the paper box are pressed tightly, thereby ensuring the normal operation of the device.

[0012] Preferably, the second edge pressing mechanism includes a bracket, a rotating frame and a pressing plate. One end of the bracket is fixed on the fixed frame, and the other end of the bracket is rotatably connected to the rotating frame. A torsion spring is also fixed between the rotating frame and the bracket. Through the rotation of the rotating frame, a basic guarantee can be provided for the positioning of the short cover of the paper box.

[0013] Preferably, the rotating frame is a right-angled structure, and the minimum distance between the left and right rotating frames is less than the length of the paper box. By limiting the rotating frame, the normal operation of the device can be guaranteed.

[0014] Preferably, a pressing sheet is also fixed on the rotating frame, and the thickness of the pressing sheet is 1mm-2mm, and the end of the pressing sheet is an arc-shaped structure. At the same time, the pressing sheet contacts the short cover on the paper box and can slide. The lower end surface of the pressing sheet is flush with the lower end surface of the pressure plate. Through the action of the pressing sheet, the flattening and positioning effect of the short cover on the paper box can be achieved.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This thermoplastic carton sealing machine for glass water production uses a pressing mechanism in conjunction with a rotary gluing mechanism. This allows for more glue to be applied within the limited length of the short cover of the carton during the carton sealing process, thereby ensuring the stability of the bonding between the short cover and the long cover after the carton is sealed. Specifically, when the carton is transported to the sealing position by the conveying mechanism, the first cylinder drives the fixed frame and the gluing mechanism downward to the appropriate position, and the second cylinder cooperates to move the convex tooth plate, the pressing plate, and the mounting frame. The short cover is folded by the contact between the pressing plate and the carton until the mounting frame contacts the carton at a limited position. At this time, the second cylinder continues to drive the convex tooth plate to move, and the transmission action between the convex tooth plates causes the glue injection nozzle to rotate and spray glue. At this time, the glue is in an arc line. Compared with traditional straight line glue, the arc line glue has a larger coverage area and more stable bonding.

[0017] 2. The thermoplastic carton sealing machine used in the production of glass water adopts a linked double pressure edge, which can realize the automatic folding and pressing of the long cover and the short cover of the carton after the gluing of the carton is completed. Specifically, the third cylinder drives the fixed frame, the movable frame, the pressure roller, the bracket and the rotating frame to move. When the rotating frame contacts the carton, the rotating frame is forced to rotate, so that the pressure piece and the short cover of the carton are in contact and slide to achieve positioning. When the pressure roller contacts the long cover of the carton, the long cover of the carton can be folded, so that the long cover of the carton is in contact with the hot melt adhesive on the short cover of the carton, thereby realizing the bonding effect of the long cover and the short cover of the carton. Combined with the sliding effect between the convex shaft and the arc surface block, the pressure roller can be moved down a distance again when moving horizontally, thereby effectively ensuring the bonding effect of the long cover and the short cover of the carton. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the device of the present invention when viewed from above;

[0020] Figure 3 This is a schematic diagram of the front three-dimensional structure of the gluing mechanism of the present invention;

[0021] Figure 4 This is a bottom-up perspective structural diagram of the gluing mechanism of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the first edge holding mechanism and the second edge holding mechanism of the present invention;

[0023] Figure 6 It is a partially enlarged three-dimensional structural schematic diagram of the first edge holding mechanism and the second edge holding mechanism of the present invention.

[0024] In the figure: 1. gantry; 2. first cylinder; 3. fixed frame; 301. arc surface block; 4. paper box; 5. gluing mechanism; 501. second cylinder; 502. fixed plate; 503. convex tooth plate; 504. pressing plate; 505. mounting frame; 506. cross bar; 507. first spring; 508. gear; 509. glue injection nozzle; 6. first edge pressing mechanism; 601. third cylinder; 602. fixed frame; 603. movable frame; 604. pressing roller; 605. vertical bar; 606. circular plate; 607. convex shaft; 608. second spring; 7. second edge pressing mechanism; 701. bracket; 702. rotating frame; 703. pressing sheet. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-6The present invention provides a technical solution: a thermoplastic sealing machine for glass water production, comprising a gantry 1, a first cylinder 2, a fixed frame 3 and a paper box 4, the gantry 1 is symmetrically fixed with the first cylinder 2, the output end of the first cylinder 2 is fixed with the fixed frame 3, the paper box 4 is arranged below the fixed frame 3, and the paper box 4 is transported by a conveying mechanism, the fixed frame 3 is symmetrically fixed with a gluing mechanism 5, the fixed frame 3 is symmetrically fixed with a first edge pressing mechanism 6, the gluing mechanism 5 includes a second cylinder 501, a fixed plate 50 2. The convex tooth plate 503, the pressure plate 504, the mounting bracket 505, the cross bar 506, the first spring 507, the gear 508 and the glue injection nozzle 509. The second cylinder 501 is fixed on the fixed frame 3. The output end of the second cylinder 501 is fixed with a fixed plate 502. The convex tooth plate 503 is fixed on the fixed plate 502. The pressure plate 504 is fixed below the convex tooth plate 503, and the end of the pressure plate 504 away from the convex tooth plate 503 is provided with an inclined surface structure. The outer side of the convex tooth plate 503 is provided with a mounting bracket 505. The mounting bracket 505 is provided on the mounting bracket A crossbar 506 is fixed, and a sliding connection is formed between the crossbar 506 and the fixed plate 502. A first spring 507 is fixed between the fixed plate 502 and the mounting frame 505. Gears 508 are fixed symmetrically on the mounting frame 505. The gears 508 and the convex tooth plate 503 are meshed. A glue injection nozzle 509 is fixed on the gear 508, and the glue injection nozzle 509 is connected to the hot melt glue material box through a conduit and a pump. The lower end surface of the glue injection nozzle 509 is higher than the lower end surface of the pressing plate 504. When the carton 4 is transported by the conveying mechanism, When it is sent to the box sealing position, the first cylinder 2 drives the fixed frame 3 and the gluing mechanism 5 to move down to the appropriate position. At this time, the second cylinder 501 drives the convex tooth plate 503, the pressure plate 504 and the mounting bracket 505 to move, and the short cover of the paper box 4 is folded by the contact between the pressure plate 504 and the mounting bracket 505 until the mounting bracket 505 contacts the paper box 4 to limit the contact. At this time, the second cylinder 501 continues to drive the convex tooth plate 503 to move, and cooperates with the transmission action between the convex tooth plate 503 and the convex tooth plate 503, so that the glue injection nozzle 509 rotates to spray glue.

[0027] When using the thermoplastic sealing machine for glass water production, Figures 1-6As shown, the gantry 1 is installed on the outside of the conveying mechanism of the paper box 4, and the paper box 4 filled with glass water is conveyed by the conveying mechanism. When the paper box 4 moves to the sealing position, the conveying mechanism stops running. At this time, the first cylinder 2 is extended to drive the fixed frame 3, the gluing mechanism 5, the first pressing mechanism 6 and the second pressing mechanism 7 to move downward. When the lower end surface of the pressing plate 504 is flush with the folding height of the paper box 4, the first cylinder 2 stops extending, and the second cylinder 501 extends to drive the fixed plate 502, the convex tooth plate 503, the pressing plate 504 When the pressing plate 504 contacts the short cover of the paper box 4, the short cover of the paper box 4 is folded by force until the mounting frame 505 contacts the side wall of the paper box 4. At this time, the second cylinder 501 continues to extend, thereby driving the fixed plate 502, the convex tooth plate 503 and the pressing plate 504 to move, so that the convex tooth plate 503 moves relative to the mounting frame 505, and the sliding effect between the cross bar 506 and the fixed plate 502 can ensure the stability of the movement of the convex tooth plate 503. The mounting frame 505 moves, and the meshing transmission between the gear 508 and the convex tooth plate 503 causes the gear 508 to drive the glue injection nozzle 509 to rotate 180°-270°. At this time, the hot melt glue in the hot melt glue box is transported to the glue injection nozzle 509 through the pump and the conduit and sprayed onto the short cover of the paper box 4. The rotation of the glue injection nozzle 509 causes the hot melt glue to be sprayed in an arc shape, thereby increasing the glue coverage area within the limited space of the short cover of the paper box 4. After the glue coating is completed, the second cylinder 50 1 contracts, and in conjunction with the elastic action of the first spring 507, the pressing plate 504, the mounting bracket 505, the gear 508 and the glue injection nozzle 509 can be reset and separated from the short cover of the paper box 4. After the short cover of the paper box 4 is separated from the pressing plate 504, the short cover of the paper box 4 is in a certain tilted state due to the elastic action of the short cover of the paper box 4 itself, which can make the hot melt adhesive flow over a short distance (because the hot melt adhesive in the melted state has fluidity, but the fluidity is poor), thereby further increasing the coverage area of ​​the hot melt adhesive on the short cover of the paper box 4;

[0028] Four arc blocks 301 are also fixed on the fixed frame 3 symmetrically, and the lower end surface of the arc block 301 is a semicircular structure; the first edge pressing mechanism 6 includes a third cylinder 601, a fixed frame 602, a movable frame 603, a pressure roller 604, a vertical rod 605, a circular plate 606, a convex shaft 607 and a second spring 608. The third cylinder 601 is fixed on the fixed frame 3, and the output end of the third cylinder 601 is fixed with a fixed frame 602, and a movable frame 603 is provided below the fixed frame 602. The movable frame 603 is connected to the pressure roller 604 by the bearing; the upper end surface of the movable frame 603 is fixed with a vertical rod 605 symmetrically on the left and right, and the vertical rod 605 is in sliding connection with the fixed frame 602; a circular plate 606 is fixed on the vertical rod 605, and a convex shaft 607 is fixed on the upper end of the circular plate 606, and the convex shaft 607 is in sliding connection with the arc surface block 301, and the convex shaft 607 and the arc surface block 301 are distributed one to one; one end of the second spring 608 is fixed on the circular plate 606, and the second spring 608 is in sliding connection with the arc surface block 301; the second spring 608 is fixed on the circular plate 606, and the second spring 608 is fixed on the upper end of the circular plate 606. The other end of the second spring 608 is fixed to the fixed frame 602; the fixed frame 602 is also fixed with a second edge pressing mechanism 7, and the second edge pressing mechanism 7 is symmetrically distributed about the center line of the fixed frame 602, and the distance between the left and right second edge pressing mechanisms 7 is greater than the length of the paper box 4; the second edge pressing mechanism 7 includes a bracket 701, a rotating frame 702 and a pressing piece 703, one end of the bracket 701 is fixed to the fixed frame 602, and the other end of the bracket 701 is symmetrically distributed with respect to the center line of the fixed frame 602, and the distance between the left and right second edge pressing mechanisms 7 is greater than the length of the paper box 4; the second edge pressing mechanism 7 includes a bracket 701, a rotating frame 702 and a pressing piece 703, one end of the bracket 701 is fixed to the fixed frame 602, and the distance between the other end of the bracket 701 and the rotating frame 702 is greater than the distance between the left and right second edge pressing mechanisms 7 It is a rotational connection, and a torsion spring is fixed between the rotating frame 702 and the bracket 701; the rotating frame 702 is a right-angled structure, and the minimum distance between the left and right rotating frames 702 is less than the length of the paper box 4; a pressing piece 703 is also fixed on the rotating frame 702, and the thickness of the pressing piece 703 is 1mm-2mm, and the end of the pressing piece 703 is an arc-shaped structure. At the same time, the pressing piece 703 contacts the short cover on the paper box 4 and can slide. The lower end surface of the pressing piece 703 is flush with the lower end surface of the pressing plate 504;

[0029] After the gluing is completed and the gluing mechanism 5 is reset, Figures 1-6As shown, at this time, the third cylinder 601 extends to drive the fixed frame 602, the movable frame 603, the pressure roller 604 and the rotating frame 702 to move. When the rotating frame 702 contacts the paper box 4, the third cylinder 601 continues to extend, so that the rotating frame 702 is forced to rotate, thereby driving the pressure plate 703 to swing until the rotating frame 702 contacts the side wall of the paper box 4, and the rotating frame 702 slides on the side wall of the paper box 4 under the action of the continued extension of the third cylinder 601. At this time, the pressure plate 703 swings to contact the inclined short cover of the paper box 4, realizing the downward positioning of the short cover of the paper box 4, so that the short cover of the paper box 4 is kept in a horizontal state, and the third cylinder 601 continues to extend to synchronously drive the fixed frame 602, the movable frame 603 and the pressure roller 604 to move When the pressure roller 604 contacts the long cover of the paper box 4, the long cover of the paper box 4 is forced to fold to a horizontal state. At this time, the long cover of the paper box 4 contacts the hot melt adhesive on the short cover of the paper box 4, thereby realizing the bonding effect between the short cover of the paper box 4 and the long cover of the paper box 4, and then realizing the sealing effect of the paper box 4. In the process of the fixed frame 602, the movable frame 603 and the pressure roller 604 moving to fold and flatten the long cover of the paper box 4, when the convex shaft 607 contacts and slides with the arc block 301, the convex shaft 607, the vertical rod 605, the movable frame 603 and the pressure roller 604 are forced to move downward again for a certain distance, thereby further applying a downward force on the long cover of the paper box 4, thereby making the bonding between the long cover of the paper box 4 and the short cover of the paper box 4 more stable. This is the working principle of the thermoplastic sealing machine for glass water production.

[0030] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A thermoplastic sealing machine for glass water production, comprising a gantry (1), a first cylinder (2), a fixed frame (3) and a paper box (4), wherein the first cylinder (2) is fixed symmetrically on the gantry (1), the fixed frame (3) is fixed to the output end of the first cylinder (2), the paper box (4) is arranged below the fixed frame (3), and the paper box (4) is transported by a transport mechanism, characterized in that: A gluing mechanism (5) is fixed symmetrically on the fixed frame (3) in the left and right directions, and a first edge pressing mechanism (6) is fixed symmetrically on the fixed frame (3) in the front and back directions. The gluing mechanism (5) comprises a second cylinder (501), a fixed plate (502), a convex tooth plate (503), a pressure plate (504), a mounting frame (505), a cross bar (506), a first spring (507), a gear (508) and a glue injection nozzle (509). The second cylinder (501) is fixed on the fixed frame (3). A fixed plate (502) is fixed on the output end of the second cylinder (501). A convex tooth plate (503) is fixed on the fixed plate (502). A pressure plate (504) is fixed below the convex tooth plate (503), and the pressure plate (504) is away from the convex tooth plate ( One end of the convex tooth plate (503) is provided with an inclined surface structure, a mounting frame (505) is provided on the outside of the convex tooth plate (503), a cross bar (506) is fixed on the mounting frame (505), the cross bar (506) and the fixed plate (502) are in sliding connection, a first spring (507) is fixed between the fixed plate (502) and the mounting frame (505), a gear (508) is fixed on the mounting frame (505) symmetrically in front and back, the gear (508) and the convex tooth plate (503) are in meshing connection, a glue injection nozzle (509) is fixed on the gear (508), and the glue injection nozzle (509) is connected to the hot melt glue material box through a conduit and a pump, and the lower end surface of the glue injection nozzle (509) is higher than the lower end surface of the pressure plate (504).

2. The thermoplastic sealing machine for glass water production according to claim 1, characterized in that: Four arc surface blocks (301) are fixed on the fixed frame (3) in a left-right symmetrical manner, and the lower end surfaces of the arc surface blocks (301) are semicircular structures.

3. The thermoplastic sealing machine for glass water production according to claim 2, characterized in that: The first edge pressing mechanism (6) comprises a third cylinder (601), a fixed frame (602), a movable frame (603), a pressure roller (604), a vertical rod (605), a circular plate (606), a convex shaft (607) and a second spring (608). The third cylinder (601) is fixed on the fixed frame (3), and the output end of the third cylinder (601) is fixed with the fixed frame (602), and the movable frame (603) is provided below the fixed frame (602). At the same time, the pressure roller (604) is connected to the bearing on the movable frame (603).

4. The thermoplastic sealing machine for glass water production according to claim 3, characterized in that: Vertical rods (605) are fixed symmetrically to the upper end surface of the movable frame (603), and the vertical rods (605) are slidably connected to the fixed frame (602).

5. The thermoplastic sealing machine for glass water production according to claim 3, characterized in that: A circular plate (606) is fixed on the vertical rod (605), and a convex shaft (607) is fixed on the upper end of the circular plate (606). The convex shaft (607) and the arc surface block (301) are in sliding connection, and the convex shaft (607) and the arc surface block (301) are distributed in a one-to-one correspondence.

6. The thermoplastic sealing machine for glass water production according to claim 3, characterized in that: One end of a second spring (608) is fixed on the circular plate (606), and the other end of the second spring (608) is fixed on the fixing frame (602).

7. The thermoplastic sealing machine for glass water production according to claim 3, characterized in that: A second edge pressing mechanism (7) is also fixed on the fixing frame (602), and the second edge pressing mechanisms (7) are symmetrically distributed about the center line of the fixing frame (602), and the distance between the left and right second edge pressing mechanisms (7) is greater than the length of the paper box (4).

8. The thermoplastic sealing machine for glass water production according to claim 7, characterized in that: The second edge pressing mechanism (7) comprises a bracket (701), a rotating frame (702) and a pressing plate (703), one end of the bracket (701) is fixed on the fixed frame (602), and the other end of the bracket (701) is rotatably connected to the rotating frame (702), and a torsion spring is also fixed between the rotating frame (702) and the bracket (701).

9. The thermoplastic sealing machine for glass water production according to claim 8, characterized in that: The rotating frame (702) is a right-angled structure, and the minimum distance between the left and right rotating frames (702) is less than the length of the paper box (4).

10. The thermoplastic sealing machine for glass water production according to claim 8, characterized in that: A pressing sheet (703) is also fixed on the rotating frame (702), and the thickness of the pressing sheet (703) is 1 mm to 2 mm, and the end of the pressing sheet (703) is an arc-shaped structure. At the same time, the pressing sheet (703) contacts the short cover on the paper box (4) and can slide. The lower end surface of the pressing sheet (703) is flush with the lower end surface of the pressing plate (504).

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