Full-automatic plastic box sealing machine

Abstract

The utility model relates to a full -automatic plastic box sealing machine of mouth more stable, can not cause film waste. This full -automatic plastic box sealing machine of mouth more stable, can not cause film waste including frame and install on the frame and send box mechanism, membrane roll mechanism, draw membrane mechanism, sealing mechanism and cutting membrane mechanism, its characterized in that: frame installs have the box lifting mechanism, and the box lifting mechanism is located in the front of sending box mechanism, and draw membrane mechanism, sealing mechanism and cutting membrane mechanism are located in the top of box lifting mechanism, the box lifting mechanism includes the box lifting frame, the lifting seat and the lifting power source, and the box lifting frame is connected in the lifting seat, the membrane roll mechanism includes the membrane placement station, draw membrane mechanism includes draw membrane clamp hand, clamp hand seat and draw membrane power source, and draw membrane power source drives clamp hand seat to remove, sealing mechanism includes the heat seal plate, and cutting membrane mechanism includes the cutting membrane cutter. This full -automatic plastic box sealing machine of mouth more stable, can not cause film waste realizes the accurate positioning of plastic box through the box lifting mechanism, and realizes the automatic supply of film through draw membrane mechanism, and there is no waste material.

Description

Technical Field

[0001] This utility model relates to a sealing machine, specifically a sealing machine for plastic boxes. Background Technology

[0002] A plastic box sealing machine is a device that seals plastic boxes with a film, such as disposable plastic food containers. Sealing with a film is cheaper and provides a better seal compared to sealing with a plastic lid. Such plastic box sealing machines are already available on the market. For example, utility model patent CN202222876061.7 discloses a pneumatic automatic plastic box sealing machine. This machine includes a sealing machine housing and a conveyor belt inside the housing. Guide plates and fixed clamping plates are symmetrically arranged on both sides of the top of the conveyor belt. A lifting bracket is located on top of the fixed clamping plate, and a lifting plate is located at the bottom of the lifting bracket. A pressure plate and a cutting blade are located at the bottom of the lifting plate, and a heating plate is located at the bottom of the pressure plate. The machine also uses a motor to control the rotation of a film roller to feed the film. Waste film is then wound up by a take-up roller. This pneumatic automatic plastic box sealing machine has the following technical problems: 1. The positioning structure of the plastic box on the conveyor belt is complex. If the positioning is inaccurate, misalignment will occur during heat sealing and cutting, affecting normal sealing; 2. Waste film will be generated, resulting in waste of film material. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, this utility model innovatively provides a fully automatic plastic box sealing machine that provides more stable sealing and does not cause film waste.

[0004] This fully automatic plastic box sealing machine includes a frame and a box feeding mechanism, a film rolling mechanism, a film pulling mechanism, a sealing mechanism, and a film cutting mechanism mounted on the frame. Its key feature is that a box lifting mechanism is mounted on the frame, located in front of the box feeding mechanism, while the film pulling, sealing, and cutting mechanisms are located above the box lifting mechanism. The box lifting mechanism includes a box lifting frame, a lifting seat, and a lifting power source. The box lifting frame is mounted on the lifting seat, and the lifting power source drives the lifting seat to move up and down. The film rolling mechanism includes a film feeding station. The film-pulling mechanism includes a film-pulling gripper, a gripper base, and a film-pulling power source. The film-pulling gripper is mounted on the gripper base, which is horizontally slidably mounted on the frame. The film-pulling power source can drive the gripper base to move. The sealing mechanism includes a heat-sealing plate, which is located directly above the lifting box frame. The film-cutting mechanism includes a film-cutting knife and a film-cutting power source that drives the film-cutting knife to move up and down. The film-cutting knife is located at the film exit end of the film roll mechanism. The film-pulling mechanism can pull the film at the film exit end backward and position the film directly below the heat-sealing plate.

[0005] The film-pulling gripper includes a fixed clamp and a movable clamp that can form a clamping action. The movable clamp is mounted on a rotating base, which is rotatably mounted on a gripper base. The rotating base is provided with a clamping spring that drives the rotating base to rotate and causes the fixed clamp and the movable clamp to form a clamping action. An opening guide wheel is connected to the rotating base. An opening guide plate is hinged to the frame near the film exit end. The opening guide plate has an opening bevel facing the front end of the film-pulling gripper. The opening guide wheel can act on the bottom of the opening bevel and cause the rotating base to rotate to achieve opening. The rear end of the opening bevel has a notch that no longer acts on the opening guide wheel and causes the rotating base to return to its original position. The rear end of the opening guide plate away from the film-pulling gripper has a limiting part. The frame is provided with a limiting post that can limit the limiting part of the opening guide plate from swinging downward. A tension spring is connected to the opening guide plate to cause the front end of the opening guide plate to swing upward.

[0006] The frame is equipped with a top box mechanism, which includes a top box rod and a power source for driving the top box rod to move up and down. The top box rod can pass downward through a heat-sealing plate.

[0007] The frame is equipped with a slide rail, the gripper base is equipped with a slider, the slider is slidably mounted on the slide rail, the slider is connected to a transmission belt, the transmission belt is wound around a pulley, and the film stretching power source is connected to the pulley for transmission.

[0008] The film roll mechanism has a film hanging plate at the film exit end, the film cutting knife is located in front of the film hanging plate, the film hanging plate has multiple notches, and the movable clamps are multiple and arranged at intervals, each movable clamp can enter a notch.

[0009] An upper film plate is provided above the film plate, and the upper film plate has a corresponding notch.

[0010] The frame is equipped with a box ejection mechanism, which includes multiple box ejection rollers arranged along the ejection direction and a box ejection power source that drives the box ejection rollers to rotate. The box ejection rollers are located in the frame corresponding to the box lifting frame, and the box lifting frame can be lowered to a position below the box ejection rollers.

[0011] The lifting base is equipped with two left and right lifting box frames. The lifting box frames have inclined guide grooves. Two guide columns are connected to the lifting box frames. Limiting components are connected to the guide columns. The guide columns are located in the inclined guide grooves of the lifting box frames, and the limiting components are located on the outer side of the inclined guide grooves.

[0012] The lifting platform is connected to a locking component, which can lock the lifting box frame.

[0013] The box feeding mechanism includes a box feeding belt and a box feeding power source that drives the box feeding belt to rotate. The box feeding belt is provided with pusher blocks evenly spaced on it.

[0014] The fully automatic plastic box sealing machine provided by this utility model achieves precise positioning of the plastic box through a box lifting mechanism and automatic film supply through a film pulling mechanism, without generating waste. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a partial schematic diagram of the present invention; Figure 3 Schematic diagram of the membrane stretching mechanism Figure 1 ; Figure 4 Schematic diagram of the membrane stretching mechanism Figure 2 ; Figure 5 Schematic diagram of the membrane stretching mechanism Figure 3 ; Figure 6 This is a schematic diagram of the clamping process; Figure 7 A schematic diagram showing the lifting box frame moving towards the heat-sealing plate; Figure 8 This is a schematic diagram of the installation of the lifting box frame; Figure 9 This is a schematic diagram of the box ejection mechanism; Figure 10 This is a diagram illustrating the sealing process. Detailed Implementation

[0016] like Figure 1 As shown, this fully automatic plastic box sealing machine includes a frame 1 and a box feeding mechanism 2, a film rolling mechanism 3, a film pulling mechanism 4, a sealing mechanism 8, a film cutting mechanism 5, and a box lifting mechanism 6 mounted on the frame 1. The box lifting mechanism 6 is located in front of the box feeding mechanism 2, and the film pulling mechanism 4, sealing mechanism 8, and film cutting mechanism 5 are located above the box lifting mechanism 6. During operation, the box feeding mechanism 2 conveys the plastic box forward and feeds it onto the box lifting mechanism 6. The film pulling mechanism 4 pulls the film from the film rolling mechanism 3, positioning the film directly below the sealing mechanism 8. Figure 10 As shown, the lifting mechanism 6 then lifts the plastic box H upwards, and the plastic box H moves upwards. When the plastic box moves upwards to a certain height, the film M adheres to the plastic box H. As the plastic box continues to move upwards, the sealing end of the plastic box and the film press against the bottom of the sealing mechanism 8, and the sealing mechanism 8 heat-seals the film onto the plastic box. After the plastic box is sealed, the film cutting mechanism 5 cuts the film, and the lifting mechanism 6 moves the plastic box downwards, thus completing the sealing work of the plastic box.

[0017] The structure and working principle of each mechanism are explained in detail below: like Figure 1As shown, the box-lifting mechanism 6 includes a box-lifting frame 60, a lifting seat 61, and a lifting power source, such as... Figure 8 As shown, the box-lifting frame 60 is connected to the lifting base 61, and the lifting power source can drive the lifting base 61 to move up and down. When the box-feeding mechanism 2 conveys the plastic box forward, the plastic box enters the box-lifting frame 60, and the edge of the box-lifting frame 60 can support the edge of the plastic box (the shape and size of the box-lifting frame 60 match those of the plastic box). Driven by the lifting power source, the box-lifting frame 60 can carry the plastic box and move up and down. Figure 2 As shown, the film roll mechanism 3 includes a film feeding station, where an active film feeding roller 30 and a driven film feeding roller 31 are provided. The film roll is placed between the active film feeding roller 30 and the driven film feeding roller 31. The film roll is fed by rotating the active film feeding roller 30 (the advantage of this structure is that it is convenient to place the film roll; simply place the film roll on the station). Alternatively, a film roll with a film roll mounting shaft can also be installed at the film feeding station; by driving the film roll mounting shaft, the film roll can also be fed. Figure 3 As shown, the film stretching mechanism 4 includes a film stretching gripper 40, a gripper base 41, and a film stretching power source. The film stretching gripper 40 is mounted on the gripper base 41, which is horizontally slidably mounted on the frame 1. The film stretching power source drives the gripper base 41 to move. Figure 10 As shown, after the film-pulling gripper 40 clamps the film M, the film-pulling power source drives the gripper base 41 to move, and the film-pulling gripper 40 pulls the film backward, placing the film below the sealing mechanism 8, waiting for the plastic box H to move upward. Figure 7 As shown, the sealing mechanism 8 includes a heat-sealing plate 80, which is located directly above the lifting frame 60, as... Figure 10 As shown, when the plastic box H moves upward, the plastic box H and the film M act together on the heat-sealing plate 80, and the heat-sealing plate 80 heat-seals the film onto the plastic box; as Figure 2 As shown, the film cutting mechanism 5 includes a film cutting blade 50 and a film cutting power source that drives the film cutting blade 50 to move up and down. The film cutting blade 50 is located at the film exit end 34 of the film roll mechanism 3 (the end when the film is horizontal). After the film is heat-sealed on the plastic box, the film cutting power source drives the film cutting blade 50 to move down and cut the film.

[0018] This fully automatic plastic box sealing machine achieves precise positioning of the plastic box through the box lifting frame 60, and then uses the lifting and lowering of the box lifting frame 60 and the heat sealing plate 80 to achieve heat sealing; while the film pulling mechanism 4 pulls the film, pulling only the section of film that needs to be sealed each time. As long as the film width is adapted to the width of the plastic box, no waste will be generated and no film will be wasted.

[0019] The membrane clamp 40 can use pneumatic fingers (within the scope of protection of this utility model), but the cost will be higher. In order to reduce costs and achieve mechanized automatic opening and closing of the clamp, such as... Figure 5As shown, the film-stretching gripper 40 includes a fixed clamp 402 and a movable clamp 401 capable of forming a clamping action. The fixed clamp 402 is mounted on the gripper base 41 (the two can be an integral structure or a separate structure). The movable clamp 401 is connected to a rotating base 400, which is rotatably mounted on the gripper base 41. A clamping spring 47 is provided on the rotating base 400 to drive the rotating base 400 to rotate and to clamp the fixed clamp 402 and the movable clamp 401. That is, the clamping spring 47 can drive the rotating base 400 to rotate and to clamp the fixed clamp 402 and the movable clamp 401. In order to achieve the opening of the clamp, an opening guide wheel 43 is connected to the rotating base 400. In addition, an opening guide plate 44 is hinged on the frame 1 near the film exit end 34. The opening guide plate 44 has an opening inclined edge 440 facing the front end of the film-stretching gripper 40. When the gripper base 41 moves forward ( Figure 5 (In the right direction, which is the direction of the film discharge end), the clamping guide wheel 43 can act on the bottom of the clamping inclined side 440 and cause the rotating seat 400 to rotate gradually, so that the fixed clamp 402 and the movable clamp 401 can gradually open (e.g. Figure 6 (As shown in the left-middle diagram), the end of the film can then enter between the fixed clamp 402 and the movable clamp 401; and the rear end of the clamping bevel 440 has a notch 441 that no longer acts on the clamping guide wheel 43 and resets the rotating seat 400. When the clamping guide wheel 43 continues to move forward and enters the notch 441 (as shown in the left-middle diagram), Figure 4 As shown), the opening clamping slope 440 no longer exerts force on the opening clamping guide wheel 43. Under the action of the clamping spring 47, the opening clamping guide wheel 43 swings upward through the notch 441, and the rotating seat 400 rotates accordingly, causing the fixed clamp 402 and the movable clamp 401 to clamp the film (as shown). Figure 6 (The state shown in the middle right image).

[0020] When the clamping guide wheel 43 moves forward, the clamping guide plate 44 must remain fixed so that it can provide support for the downward movement of the clamping guide wheel 43. When the clamping guide wheel 43 returns to its original position, the clamping guide plate 44 must rotate to keep the clamping inclined edge 440 horizontal so that the clamping guide wheel 43 can return to its original position while the film-pulling gripper 40 is in the clamping state. For this purpose, the rear end of the clamping guide plate 44 away from the film-pulling gripper 40 has a limiting part 442 (e.g., Figure 4As shown), a limiting post 443 is provided on the frame 1. The limiting post 443 can restrict the limiting part 442 of the clamping guide plate 44 from swinging downward. In addition, a tension spring 444 is connected to the clamping guide plate 44 to make the front end of the clamping guide plate 44 swing upward. The tension spring 444 pulls the clamping guide plate 44, making the front end of the clamping guide plate 44 swing upward (the clamping inclined edge 440 is located at the front end of the clamping guide plate 44), while the limiting part 442 at the rear end of the clamping guide plate 44 swings downward and acts on the limiting post 443. In this way, the clamping guide plate 44 is restricted and cannot swing. When the clamping guide wheel 43 moves forward, the clamping inclined edge 440 of the clamping guide plate 44 applies a downward force to the clamping guide wheel 43, thus opening the film clamping hand 40. After the film clamping hand 40 clamps the film, the clamping guide wheel 43 moves backward, acting on the upper surface of the clamping inclined edge 440. The clamping guide wheel 43 applies a downward force to the front end of the clamping guide plate 44 from above, causing the front end of the clamping guide plate 44 to swing downward. This allows the film clamping hand 40 to move horizontally backward in a closed state. Through this ingenious structure, the film clamping hand 40 achieves both opening and closing using a purely mechanical structure, reducing manufacturing costs and improving the stability of the film clamping mechanism.

[0021] like Figure 7 As shown, a top box mechanism is installed on the frame. The top box mechanism includes a top box rod 9 and a top box power source that drives the top box rod 9 to move up and down. The top box rod 9 can pass downward through the heat sealing plate 80. After the plastic box is sealed, the top box power source drives the top box rod 9 downward through the heat sealing plate 80 to push the finished product downward and prevent the heat-sealed film from sticking to the heat sealing plate 80.

[0022] In order to smoothly drive the gripper 41 to move horizontally, such as Figure 3 As shown, a slide rail 48 is installed on the frame 1, and a slider 42 is installed on the gripper base 41. The slider 42 is slidably mounted on the slide rail 48 and is connected to a drive belt 45. The drive belt 45 is wound around a pulley 46, and the film-stretching power source is connected to the pulley 46 for transmission. Driven by the film-stretching power source, the drive belt 45 moves, causing the slider 42 to move smoothly horizontally on the slide rail 48.

[0023] like Figure 2 As shown, a film hanging plate 32 is provided at the film exit end 34 of the film roll mechanism 3, and a film cutting knife 50 is located in front of the film hanging plate 32. The film hanging plate 32 has multiple notches 320, such as... Figure 4As shown, there are multiple movable clamps 401 arranged at intervals, and each movable clamp 401 can enter a notch 320. After each cut by the film cutter 50, the head of the film is hung on the film hanging plate 32. When the film cutter 50 rises, the film pulling clamp 40 moves forward, the fixed clamp 402 of the film pulling clamp 40 comes above the film hanging plate 32, and the movable clamp 401 comes below the film hanging plate 32. The movable clamp 401 performs a clamping action, and the movable clamp 401 passes through the notch 320 and clamps the film together with the fixed clamp 402. When the film pulling clamp 40 moves backward, the film can be pulled backward.

[0024] To prevent the film tip from curling upwards and to prevent the film clamping hand 40 from failing to hold the film, such as Figure 3 As shown, an upper film plate 33 is provided above the film mounting plate 32 (the fixing clamp 402 of the film pulling clamp 40 comes above the upper film plate 33). The upper film plate 33 also has a corresponding notch to allow the movable clamp 401 to pass through. Due to the presence of the upper film plate 33, it can effectively prevent the film head from tilting upwards and ensure that the film pulling clamp 40 can stably clamp the film.

[0025] like Figure 1 As shown, a box ejection mechanism 7 is installed on the frame 1, such as... Figure 9 As shown, the box ejection mechanism 7 includes multiple ejection rollers 70 arranged along the ejection direction and an ejection power source 71 that drives the ejection rollers 70 to rotate. The ejection power source 71 drives the ejection rollers 70 to rotate via a belt 72. Figure 1 As shown, the ejector roller 70 is located within the frame corresponding to the lifting frame 60, which can be lowered below the ejector roller 70. After the plastic box is sealed, the lifting frame 60 moves downwards with the plastic box. Since the ejector roller 70 is located within the frame corresponding to the lifting frame 60 (meaning the lifting frame 60 allows the ejector roller 70 to pass through), when the lifting frame 60 is lowered below the ejector roller 70, the finished plastic box is placed on the ejector roller 70. The ejector roller 70 rotates, moving the plastic box to one side, thus completing the ejection. Alternatively, a robotic arm can be used to remove the finished plastic box from the lifting frame 60, or it can be removed manually.

[0026] To facilitate the replacement of different models of the box-lifting frame 60 to meet the sealing requirements of different models of plastic boxes, such as... Figure 8 As shown, two lifting box frame seats 62 are installed on the lifting base 61. Each lifting box frame seat 62 has an inclined guide groove 620. The lifting box frame 60 is connected to two guide posts, and each guide post is connected to a limiting member 63. When installing the lifting box frame 60, simply place the guide post of the lifting box frame 60 into the inclined guide groove 620 of the lifting box frame seat 62. In this way, the lifting box frame 60 is stably placed on the lifting box frame seat 62, and the limiting member 63 is located on the outer side of the inclined guide groove 620 to prevent the lifting box frame 60 from moving left and right.

[0027] To prevent the lifting frame 60 from loosening, a locking component (not shown in the figure) is connected to the lifting base 61. This locking component locks the lifting frame 60, ensuring its stable fixation on the lifting base 61. The locking component can be a rotatable locking plate, which, when rotated, blocks the lifting frame 60, preventing it from sliding off the lifting base 61. Alternatively, the locking component can be an electromagnet, whose core extends and retracts to block the lifting frame 60, also preventing it from sliding off the lifting base 61. Of course, other locking structures can also be used, as long as they can lock the lifting frame 60.

[0028] Finally, it is worth mentioning that the box feeding mechanism 2 includes a box feeding belt 20 and a box feeding power source that drives the box feeding belt 20 to rotate, such as... Figure 1 As shown, the box-feeding belt 20 is provided with equally spaced pusher blocks 21. Driven by the box-feeding power source, the box-feeding belt 20 rotates, and the pusher blocks 21 on the box-feeding belt 20 push the plastic box into the lifting frame 60. When the box-ejection mechanism 7 is installed, the pusher blocks 21 on the box-feeding belt 20 first push the plastic box onto the ejection roller 70 (at this time, the ejection roller 70 does not rotate), and then the lifting frame 60 moves upward, and the plastic box enters into the lifting frame 60. The lifting frame 60 lifts the plastic box for subsequent sealing work.

Claims

1. A fully automatic plastic box sealing machine, comprising a frame (1) and a box feeding mechanism (2), a film rolling mechanism (3), a film pulling mechanism (4), a sealing mechanism (8), and a film cutting mechanism (5) mounted on the frame (1), characterized in that: The frame (1) is equipped with a box-lifting mechanism (6), which is located in front of the box-feeding mechanism (2). The film-pulling mechanism (4), sealing mechanism (8), and film-cutting mechanism (5) are located above the box-lifting mechanism (6). The box-lifting mechanism (6) includes a box-lifting frame (60), a lifting seat (61), and a lifting power source. The box-lifting frame (60) is located on the lifting seat (61), and the lifting power source can drive the lifting seat (61) to move up and down. The film roll mechanism (3) includes a film-laying station. The film-pulling mechanism (4) includes a film-pulling gripper (40), a gripper seat (41), and a film-pulling power source. The hand (40) is mounted on the gripper seat (41), which is horizontally slidably mounted on the frame (1). The film pulling power source can drive the gripper seat (41) to move. The sealing mechanism (8) includes a heat sealing plate (80), which is located directly above the lifting box frame (60). The film cutting mechanism (5) includes a film cutting knife (50) and a film cutting power source that drives the film cutting knife (50) to move up and down. The film cutting knife (50) is located at the film exit end (34) of the film roll mechanism (3). The film pulling mechanism (4) can pull the film at the film exit end (34) backward and place the film directly below the heat sealing plate (80).

2. The fully automatic plastic box sealing machine according to claim 1, characterized in that: The film-pulling gripper (40) includes a fixed clamp (402) and a movable clamp (401) capable of forming a clamping action. The movable clamp (401) is mounted on a rotating seat (400), which is rotatably mounted on a gripper seat (41). The rotating seat (400) is provided with a clamping spring (47) that drives the rotating seat (400) to rotate and causes the fixed clamp (402) and the movable clamp (401) to form a clamping action. An opening guide wheel (43) is connected to the rotating seat (400). An opening guide plate (44) is hinged to the frame (1) near the film outlet end (34). The opening guide plate (44) has an opening mechanism facing the front end of the film-pulling gripper (40). The clamping bevel (440) is provided with a notch (441) at the rear end of the clamping bevel (440) to allow the clamping guide wheel (43) to act on the bottom of the clamping bevel (440) and rotate the rotating seat (400) to achieve clamping. The clamping bevel (440) has a notch (441) at the rear end away from the film clamping hand (40) to allow the rotating seat (400) to reset. The clamping guide plate (44) has a limiting part (442) at the rear end away from the film clamping hand (40). The frame (1) is provided with a limiting post (443). The limiting post (443) can limit the limiting part (442) of the clamping guide plate (44) to swing downward. The clamping guide plate (44) is connected with a tension spring (444) to allow the front end of the clamping guide plate (44) to swing upward.

3. A fully automatic plastic box sealing machine according to claim 1 or 2, characterized in that: The frame is equipped with a top box mechanism, which includes a top box rod (9) and a top box power source for driving the top box rod (9) to move up and down. The top box rod (9) can pass downward through the heat sealing plate (80).

4. A fully automatic plastic box sealing machine according to claim 1 or 2, characterized in that: The frame (1) is equipped with a slide rail (48), and the gripper base (41) is equipped with a slider (42). The slider (42) is slidably mounted on the slide rail (48). The slider (42) is connected to the transmission belt (45). The transmission belt (45) is wound around the pulley (46). The film pulling power source is connected to the pulley (46) for transmission.

5. The fully automatic plastic box sealing machine according to claim 2, characterized in that: The film roll mechanism (3) has a film hanging plate (32) at the film exit end (34), the film cutting knife (50) is located on the front side of the film hanging plate (32), the film hanging plate (32) has multiple notches (320), the movable clamps (401) have multiple and are arranged at intervals, and each movable clamp (401) can enter a notch (320).

6. The fully automatic plastic box sealing machine according to claim 5, characterized in that: An upper film plate (33) is provided above the film plate (32), and the upper film plate (33) has a corresponding notch.

7. The fully automatic plastic box sealing machine according to claim 1, characterized in that: The frame (1) is equipped with a box ejection mechanism (7). The box ejection mechanism (7) includes multiple box ejection rollers (70) arranged along the discharge direction and a box ejection power source that drives the box ejection rollers (70) to rotate. The box ejection rollers (70) are located in the frame corresponding to the box lifting frame (60). The box lifting frame (60) can be lowered to a position below the box ejection rollers (70).

8. A fully automatic plastic box sealing machine according to claim 1 or 2, characterized in that: The lifting seat (61) is equipped with two left and right lifting box frame seats (62). The lifting box frame seat (62) has an inclined guide groove (620). The lifting box frame (60) is connected to two guide posts. The guide posts are connected to limit members (63). The guide posts are located in the inclined guide groove (620) of the lifting box frame seat (62), and the limit members (63) are located on the outer side of the inclined guide groove (620).

9. The fully automatic plastic box sealing machine according to claim 8, characterized in that: The lifting seat (61) is connected to a locking component, which can lock the lifting box frame (60).

10. A fully automatic plastic box sealing machine according to claim 1 or 2, characterized in that: The box feeding mechanism (2) includes a box feeding belt (20) and a box feeding power source that drives the box feeding belt (20) to rotate. The box feeding belt (20) is provided with pusher blocks (21) evenly distributed.

Images