CN210681237U - Main body device of packaging machine - Google Patents

Abstract

The embodiment of the application discloses packagine machine's main part device. The automatic pushing device comprises a left pushing plate driving mechanism, a right pushing plate mechanism, a rear pushing plate driving mechanism, a rear pushing plate mechanism, a pushing driving mechanism, a pushing mechanism, a heating roller mechanism, a bracket pressing plate driving mechanism, a bracket pressing plate mechanism and a rack. The left push plate mechanism and the right push plate mechanism can move left and right under the drive of the left push plate driving mechanism and the right push plate driving mechanism, the rear push plate mechanism can move back and forth under the drive of the rear push plate driving mechanism, the goods pushing mechanism can move back and forth under the drive of the goods pushing driving mechanism, the bracket pressing plate mechanism can move up and down under the drive of the bracket pressing plate driving mechanism, and the heating roller mechanism is arranged on the frame to heat and seal the packaging film. The main body device of the packaging machine is compact in structure, can adapt to packaging of various packaging sizes and various packaging types, is high in packaging speed, can finish more packages in a short time, and is high in packaging efficiency.

Description

Main body device of packaging machine

Technical Field

The application relates to the technical field related to a packaging machine, in particular to a main body device of the packaging machine.

Background

The packaging machines of the same type, such as a preservative film packaging machine, a stretch film packaging machine and the like, are commonly used in various occasions, such as fresh food business surpassing, distribution centers and the like. However, the packaging machines of the same type such as the existing preservative film packaging machine and stretch film packaging machine have the problems of difficulty in realizing multiple packaging sizes and types, low packaging efficiency and the like.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the present application provides a main body device of a packaging machine.

The main body device of the packaging machine may include:

a frame;

the left and right push plate driving mechanisms are arranged on the rack;

the left push plate mechanism is connected with the left and right push plate driving mechanism, so that the left push plate mechanism can move leftwards or rightwards;

the right push plate mechanism is connected with the left push plate driving mechanism and the right push plate driving mechanism, so that the right push plate mechanism can move towards the direction of the movement of the left push plate mechanism at the same time;

the rear push plate driving mechanism is arranged on the rack;

and the rear push plate mechanism is connected with the rear push plate driving mechanism, so that the rear push plate mechanism can move back and forth. The rear push plate mechanism is positioned above the left push plate mechanism and the right push plate mechanism;

the goods pushing driving mechanism is arranged on the rack;

and the goods pushing mechanism is connected with the goods pushing driving mechanism, so that the goods pushing mechanism can move back and forth. And the goods pushing mechanism is positioned above the rear push plate mechanism;

the heating roller mechanism is arranged below the front end of the rack;

the bracket pressing plate driving mechanism is arranged on the rack;

and

and the bracket pressing plate mechanism is connected with the bracket pressing plate driving mechanism, so that the bracket pressing plate mechanism can move along the vertical direction.

According to some preferred embodiments of the present application, the frame includes a left frame plate, a right frame plate, and a rear frame plate. The left frame plate and the right frame plate are arranged in parallel. And one end of the rear frame plate is connected with the rear end of the left frame plate, and the other end of the rear frame plate is connected with the rear end of the right frame plate, so that the rack is of a U-shaped structure.

According to some preferred embodiments of the present application, the left and right blade driving mechanisms include left and right blade driving motors, at least two driving wheels, and a driving belt. The left and right push plate driving motors and the at least two driving wheels are connected to the rear frame plate. The left and right push plate driving motors are connected with one driving wheel. The transmission belt is wound on at least two transmission wheels, so that the transmission belt can form an upper transmission belt part and a lower transmission belt part with opposite movement directions. In a mounting state, the rear end of the left push plate mechanism is connected to the upper transmission belt part, and the rear end of the right push plate mechanism is connected to the lower transmission belt part, so that the left push plate mechanism and the right push plate mechanism can move in opposite directions simultaneously.

According to some preferred embodiments of the present application, a first spool is coupled to the frame. And a second sliding shaft is connected below the heating roller mechanism. The first sliding shaft and the second sliding shaft are arranged in parallel. The left push plate mechanism and the right push plate mechanism are connected to the first sliding shaft and the second sliding shaft in a sliding mode. And a positioning plate is arranged on the first slide shaft.

According to some preferred embodiments of the present application, the rear push plate driving mechanism includes a rear push plate driving motor and a first transmission shaft. The rear push plate driving motor is in transmission connection with the first transmission shaft. The first transmission shaft is rotatably connected to the left frame plate and the right frame plate. And a first driving wheel and a second driving wheel are respectively arranged at two ends of the first transmission shaft. The front end of the left frame plate is connected with a first driven wheel. And the front end of the right frame plate is connected with a second driven wheel. In the installation state, the first driving wheel is connected with the first driven wheel through a first transmission belt. And the second driving wheel is connected with the second driven wheel through a second transmission belt.

According to some preferred embodiments of the present application, the rear push plate mechanism is connected to the first and/or second drive belt such that the rear push plate mechanism can move back and forth.

According to some preferred embodiments of the present application, the push driving mechanism includes a push driving motor and a second driving shaft. The goods pushing driving motor is in transmission connection with the second transmission shaft. The second transmission shaft is rotatably connected to the left frame plate and the right frame plate. And a third driving wheel and a fourth driving wheel are respectively arranged at two ends of the second transmission shaft. And the front end of the left frame plate is connected with a third driven wheel. And the front end of the right frame plate is connected with a fourth driven wheel. And in the installation state, the third driving wheel is connected with the third driven wheel through a third transmission belt. And the fourth driving wheel is connected with the fourth driven wheel through a fourth transmission belt.

According to some preferred embodiments of the present application, the cargo pushing mechanism is connected to the third and/or fourth belts such that the cargo pushing mechanism can move back and forth.

According to some preferred embodiments of the present application, a left slide rail is provided on the left frame plate, and a right slide rail is provided on the right frame plate. In a use state, the rear push plate mechanism and the goods pushing mechanism can slide on the left slide rail and the right slide rail.

According to some preferred embodiments of the present application, the carriage platen driving mechanism includes a carriage platen driving motor and a gear transmission mechanism. In the installation state, the bracket pressing plate driving motor is connected to the rack through a connecting frame, the bracket pressing plate mechanism is rotatably connected to the connecting frame, and the bracket pressing plate driving motor is connected with the bracket pressing plate mechanism through the gear transmission mechanism, so that the bracket pressing plate mechanism can move in the vertical direction.

Compared with the prior art, the main body device of the packaging machine has the following beneficial effects:

the main body device of the packaging machine can adapt to packaging of various packaging sizes and various packaging types, is high in packaging speed, can finish more packages in a short time, and improves packaging efficiency.

Additional features of the present application will be set forth in part in the description which follows. Additional features of some aspects of the present application will be apparent to those of ordinary skill in the art in view of the following description and accompanying drawings, or in view of the production or operation of the embodiments. The features disclosed in this application may be realized and attained by practice or use of various methods, instrumentalities and combinations of the specific embodiments described below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. Like reference symbols in the various drawings indicate like elements. Wherein,

fig. 1, 2 are schematic structural views of a main body arrangement of a packaging machine according to some embodiments of the present application;

fig. 3 and 4 are schematic structural views of the main body unit of the packaging machine according to some embodiments of the present application with a frame removed;

fig. 5 is a schematic view of a disassembled structure of the main body means of the packaging machine according to some embodiments of the present application;

fig. 6 is a schematic structural view showing a main assembly of a packing machine in which a left and right push plate driving mechanism, a rear push plate driving motor, and a push driving motor are mounted on a frame according to some embodiments of the present application;

fig. 7 is a schematic view of a pusher mechanism coupled to a pusher drive mechanism in a body assembly of a packaging machine according to some embodiments of the present application;

fig. 8 is a schematic view of the construction of the main assembly of the packaging machine according to some embodiments of the present application in which the rear pusher mechanism is coupled to the rear pusher drive mechanism;

fig. 9 is a schematic view of the structure of a first transmission shaft, a second transmission shaft and a first slide shaft in a body arrangement of a packaging machine according to some embodiments of the present application;

fig. 10 is a schematic view of the structure of the left pusher mechanism, the left frame plate and the left slide rail in the main assembly of the packaging machine according to some embodiments of the present application;

fig. 11 is a schematic view of the construction of the right pusher mechanism, the right frame plate and the right slide rail in the main assembly of the packaging machine according to some embodiments of the present application;

fig. 12 is a schematic view of the structure of a heating roller mechanism in a body arrangement of a packaging machine according to some embodiments of the present application;

fig. 13 is a schematic structural view of a carriage pressing plate driving mechanism and a carriage pressing plate mechanism in a main body apparatus of a packaging machine according to some embodiments of the present application.

List of reference numerals

100-left and right push plate driving mechanism

110-left and right push plate driving motor

120-driving wheel

130-driving belt

131-upper drive belt

132-lower drive belt part

200-left push plate mechanism

300-right push plate mechanism

400-rear push plate driving mechanism

410-rear push plate driving motor

420-first Transmission shaft

430-first drive wheel

440-secondary drive wheel

450-first driven wheel

460-secondary driven wheel

470-first drive belt

480-second drive Belt

500-rear push plate mechanism

600-goods pushing driving mechanism

610-goods pushing driving motor

620-second drive shaft

630-third driving wheel

640-fourth driving wheel

650-third driven wheel

660-fourth driven wheel

670-third drive Belt

680 fourth drive belt

700-push mechanism

800-heating roller mechanism

900-bracket pressing plate driving mechanism

910-connecting rack

920-bracket pressing plate driving motor

930-Gear drive

1000-bracket pressing plate mechanism

1110-first sliding shaft

1120-second spool

1130-positioning plate

1200-frame

1210-left frame plate

1220-Right frame plate

1230-rear frame plate

1310 left slide rail

1320-Right slide rail

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that if the terms "first", "second", etc. are used in the description and claims of this application and in the above-described drawings, they are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, if the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, if the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", etc. are referred to, their indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, in this application, the terms "mounted," "disposed," "provided," "connected," "sleeved," and the like should be construed broadly if they are referred to. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The embodiment of the application discloses packagine machine's main part device. The main body device of the packaging machine can be used as the main body part of the packaging machines of the same type, such as a preservative film packaging machine, a stretch film packaging machine and the like.

As shown in fig. 1 and 2, the main device of the packaging machine may include a left-right push plate driving mechanism 100, a left push plate mechanism 200, a right push plate mechanism 300, a rear push plate driving mechanism 400, a rear push plate mechanism 500, a push driving mechanism 600, a push mechanism 700, a heating roller mechanism 800, a carriage pressing plate driving mechanism 900, a carriage pressing plate mechanism 1000, and a frame 1200.

In some embodiments, as shown in fig. 1-2 and 10-11, the frame 1200 may include a left frame plate 1210, a right frame plate 1220, and a rear frame plate 1230. The left frame plate 1210 and the right frame plate 1220 may be used for fixing, connecting and supporting each mechanism. The left frame plate 1210 and the right frame plate 1220 can also be used for mounting positions of groove-type photoelectric sensors for detecting reset positions of the rear push plate mechanism and the goods pushing mechanism. The rear frame plate 1230 may be used for fixing, connecting and supporting the motor assembly, and a driving unit of the left/right push pedal mechanism. In addition, the rear frame plate 1230 may also be used for a mounting position of a groove type photo sensor for reset position detection of the left/right pusher mechanism.

The left frame plate 1210 and the right frame plate 1220 are arranged in parallel. One end of the rear frame plate 1230 is connected to the rear end of the left frame plate 1210, and the other end is connected to the rear end of the right frame plate 1220, so that the frame 1200 is in a U-shaped structure.

The left-right pusher driving mechanism 100, the left pusher mechanism 200, and the right pusher mechanism 300 are left/right actuators of the main unit of the packaging machine in the embodiment of the present application.

In some embodiments, as shown in FIGS. 1-5 and 6, the left and right blade drive mechanism 100 includes a left and right blade drive motor 110, at least two drive wheels 120, and a drive belt 130.

In the mounted state, the left-right push plate driving mechanism 100 is provided on the frame 1200. Illustratively, as shown in FIG. 6, the left and right pusher plate drive motors 110 and at least two drive wheels 120 are coupled to the rear frame plate 1230. The left and right push plate driving motors 110 are connected to a driving wheel 120. The belt 130 is wound around at least two of the drive wheels 120 such that the belt 130 forms an upper belt portion 131 and a lower belt portion 132 having opposite directions of movement.

In some embodiments, the left pusher mechanism 200 can be configured as shown in FIG. 10. In the installed state, the left push plate mechanism 200 may be coupled to the left and right push plate driving mechanism 100 such that the left push plate mechanism 200 can move left or right.

In some embodiments, the structure of the right pusher mechanism 300 can be as shown in FIG. 11. In the installed state, the left push plate mechanism 200 may be connected to the left and right push plate driving mechanism 100, so that the right push plate mechanism 300 can be moved in the direction of the movement of the left push plate mechanism 200 at the same time.

Illustratively, in the installed state, the rear end of the left push plate mechanism 200 is connected to the upper power transmission belt portion 131, and the rear end of the right push plate mechanism 300 is connected to the lower power transmission belt portion 132, so that the left push plate mechanism 200 and the right push plate mechanism 300 can be simultaneously moved in opposite directions by the left and right push plate driving motors 110.

Further, a first slide shaft 1110 is connected to the frame 1200. A second slide shaft 1120 is connected to a lower portion of the heating roller mechanism 800. The first and second sliding shafts 1110 and 1120 may serve as sliding rail shafts of the left and right push plate mechanisms.

Illustratively, the first and second spools 1110, 1120 are arranged in parallel. The left and right push plate mechanisms 200 and 300 are slidably connected to the first and second sliding shafts 1110 and 1120, so that the left and right push plate mechanisms can slide on the first and second sliding shafts 1110 and 1120, and further the movement of the left and right push plate mechanisms can be kept stable.

Further, a positioning plate 1130 is provided on the first sliding shaft 1110. The positioning plate 1130 may be used to define the position where the left and right push plate mechanisms move.

The rear pushing plate driving mechanism 400 and the rear pushing plate mechanism 500 are rear actuating mechanisms of the main body device of the packaging machine in the embodiment of the present application.

In some embodiments, as shown in FIGS. 1-6 and 8-9, the rear push plate drive mechanism 400 can include a rear push plate drive motor 410 and a first drive shaft 420.

In the installed state, the rear pusher drive motor 410 is drivingly connected (e.g., geared) to the first drive shaft 420. The rear pusher drive mechanism 400 is disposed on the frame 1200. Illustratively, the first transmission shaft 420 is rotatably coupled to a left frame plate 1210 and a right frame plate 1220. The rear push plate driving motor 410 may be connected to the frame through a connection plate. A first driving wheel 430 and a second driving wheel 440 are respectively disposed at both ends of the first transmission shaft 420. A first driven wheel 450 is connected to the front end of the left frame plate 1210. A second driven wheel 460 is connected to a front end of the right frame plate 1220. In the installed state, the first driving wheel 430 is connected with the first driven wheel 450 through a first transmission belt 470. The second driving wheel 440 and the second driven wheel 460 are connected by a second driving belt 480.

In some embodiments, the rear pusher mechanism 500 may take the configuration shown in FIG. 8.

The rear push plate mechanism 500 is connected to the rear push plate driving mechanism 400 so that the rear push plate mechanism 500 can move forward and backward. Specifically, as shown in fig. 8, the rear push plate mechanism 500 is connected to the first transmission belt 470 and/or the second transmission belt 480 such that the rear push plate mechanism 500 can move back and forth. And the rear push plate mechanism 500 is located above the left push plate mechanism 200 and the right push plate mechanism 300.

The pusher driving mechanism 600 and the pusher mechanism 700 are the goods pushing mechanisms of the main body device of the packaging machine in the embodiment of the present application.

In some embodiments, as shown in fig. 1-6 and 7, 9, the push drive mechanism 600 includes a push drive motor 610 and a second drive shaft 620. And a pushing driving mechanism 600 disposed on the frame 1200.

Illustratively, the push drive motor 610 is drivingly connected (e.g., geared) to a second drive shaft 620. The second transmission shaft 620 is rotatably coupled to the left frame plate 1210 and the right frame plate 1220. A third driving pulley 630 and a fourth driving pulley 640 are respectively provided at both ends of the second transmission shaft 620. A third driven wheel 650 is connected to the front end of the left frame plate 1210. A fourth driven wheel 660 is connected to the front end of the right frame plate 1220.

In the mounted state, the third driving wheel 630 and the third driven wheel 650 are connected by a third driving belt 670. The fourth driving wheel 640 and the fourth driven wheel 660 are connected by a fourth belt 680.

In some embodiments, the pushing mechanism 700 may take the configuration shown in FIG. 7. In the installed state, the pushing mechanism 700 is connected to the pushing driving mechanism 600 so that the pushing mechanism 700 can move forward and backward. Specifically, the pushing mechanism 700 is coupled to the third belt 670 and/or the fourth belt 680 such that the pushing mechanism 700 can move back and forth. And the push mechanism 700 is positioned above the rear push plate mechanism 500.

Further, in some embodiments, as shown in fig. 5, 10-11, a left rail 1310 is disposed on the left frame plate 1210 and a right rail 1320 is disposed on the right frame plate 1220. The left rail 1310 and the right rail 1320 may be used as a sliding rail plate of the rear pushing plate mechanism and the cargo pushing mechanism. In the use state, the rear pushing plate mechanism 500 and the cargo pushing mechanism 700 can slide on the left sliding rail 1310 and the right sliding rail 1320.

In some embodiments, the heating roller mechanism 800 may be configured as shown in FIG. 12. In the mounted state, the heating roller mechanism 800 is disposed below the front end of the frame 1200. The bottom packaging film of the packaging object is heat sealed as it passes through.

For example, the heating roller mechanism 800 may employ multiple rows of unpowered rollers to reduce frictional resistance as the packaged objects pass.

In some embodiments, as shown in fig. 1-5 and 13, the carriage platen drive mechanism 900 may include a carriage platen drive motor 920 and a gear train 930.

The carriage platen driving mechanism 900 is disposed on the frame 1200. Specifically, in the installed state, the tray press plate driving motor 920 is connected to the frame 1200 through the connection frame 910, the tray press plate mechanism 1000 is rotatably connected to the connection frame 910, and the tray press plate driving motor 920 is connected to the tray press plate mechanism 1000 through the gear transmission mechanism 930, so that the tray press plate mechanism 1000 can move in the up-down direction.

In some embodiments, as shown in fig. 1-5 and 13, the carriage platen mechanism 1000 is coupled to the carriage platen drive mechanism 900 such that the carriage platen mechanism 1000 is movable in an up-down direction. The bracket pressing plate mechanism is used for appropriately pressing the packaged object, and the situation that the packaged object deviates from the position and rolls over is prevented. Which can be fixed at a corresponding height position as required.

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The operating principle and the process of the main body device of the packaging machine are as follows:

the packaging machine is consistent with the preset conditions required by the same type of packaging machine, objects to be packaged (which can be objects to be packaged with different sizes and different types) need to be conveyed upwards from the bottom to the central position of the packaging by a specific tray during packaging, and in the conveying process, the objects to be packaged contact with the stretched preservative film or stretched film and other packaging materials and synchronously ascend. After the preservative film reaches the packaging position, the left push plate mechanism and the right push plate mechanism synchronously and rapidly move from two ends to the center, and contact with the contacted preservative film and synchronously move in the moving process to drive the preservative film to reach the bottom of a packaged object;

after the left push plate mechanism and the right push plate mechanism finish moving, the rear push plate mechanism starts to move forward from the rear end until the bottom of the packaged object is close to the front position, and the moving distance of the rear push plate mechanism can be set according to actual conditions so as to achieve the optimal packaging effect; in the process, the external film clamping device sequentially releases the clamping plates so that the rear push plate mechanism pushes the packaging film in place;

after the rear push plate mechanism finishes moving, the goods pushing mechanism starts to move forwards from the rear end at a medium speed and a constant speed to contact with the packaged object and synchronously move to push out the packaged object. In the process, the bracket pressing plate mechanism can be fixed at a corresponding height position according to actual requirements, when the packaged object is packaged and pushed out, the packaged object can be properly pressed, and the situations of position deviation, rolling and the like of the packaged object are prevented;

the packaging object passes through the top surface of the heating roller mechanism when being pushed out, the heating roller mechanism maintains a set constant temperature, and when the packaging object passes through the surface of the heating roller together with the packaging film, the heating roller heats and seals the packaging film at the bottom of the packaging object. And after the packaged object leaves the heating roller mechanism, the packaged object is conveyed to the next station by an external conveying line, and the whole packaging process is finished.

The main body device of the packaging machine is compact in structure, high in editing degree of actions and flows, capable of adapting to packaging of various packaging sizes and various packaging types, high in packaging speed, capable of completing multiple packages in a short time and high in packaging efficiency.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. Main body arrangement of a packaging machine, characterized in that the main body arrangement of the packaging machine comprises:

a frame (1200);

a left-right push plate driving mechanism (100) arranged on the frame (1200);

a left push plate mechanism (200) connected to the left and right push plate driving mechanism (100) such that the left push plate mechanism (200) can move left or right;

a right push plate mechanism (300) connected to the left and right push plate driving mechanism (100) such that the right push plate mechanism (300) can move in a direction along the moving direction of the left push plate mechanism (200) at the same time;

the rear push plate driving mechanism (400) is arranged on the rack (1200);

the rear push plate mechanism (500) is connected with the rear push plate driving mechanism (400) so that the rear push plate mechanism (500) can move back and forth; and the rear push plate mechanism (500) is positioned above the left push plate mechanism (200) and the right push plate mechanism (300);

a push drive mechanism (600) disposed on the frame (1200);

a pushing mechanism (700) connected with the pushing driving mechanism (600) so that the pushing mechanism (700) can move back and forth; and the cargo pushing mechanism (700) is positioned above the rear push plate mechanism (500);

the heating roller mechanism (800) is arranged below the front end of the frame (1200);

a carriage platen drive mechanism (900) provided on the frame (1200);

and

and a carriage pressing plate mechanism (1000) connected to the carriage pressing plate driving mechanism (900) so that the carriage pressing plate mechanism (1000) can move in the vertical direction.

2. Main unit of a packaging machine according to claim 1, characterized in that said frame (1200) comprises a left frame plate (1210), a right frame plate (1220) and a rear frame plate (1230);

the left frame plate (1210) and the right frame plate (1220) are arranged in parallel;

one end of the rear frame plate (1230) is connected with the rear end of the left frame plate (1210), and the other end of the rear frame plate is connected with the rear end of the right frame plate (1220), so that the frame (1200) is of a U-shaped structure.

3. The main unit of the packaging machine according to claim 2, characterized in that said left and right pusher driving mechanism (100) comprises a left and right pusher driving motor (110), at least two driving wheels (120) and a driving belt (130);

the left and right push plate driving motors (110) and the at least two driving wheels (120) are connected to the rear frame plate (1230);

the left and right push plate driving motors (110) are connected with one driving wheel (120); the transmission belt (130) is wound on at least two transmission wheels (120), so that the transmission belt (130) can form an upper transmission belt part (131) and a lower transmission belt part (132) with opposite movement directions;

in the installation state, the rear end of the left push plate mechanism (200) is connected to the upper transmission belt part (131), and the rear end of the right push plate mechanism (300) is connected to the lower transmission belt part (132), so that the left push plate mechanism (200) and the right push plate mechanism (300) can move in opposite directions simultaneously.

4. Main unit of a packaging machine according to claim 3, characterized in that a first sliding shaft (1110) is connected to said frame (1200); a second slide shaft (1120) is connected below the heating roller mechanism (800); the first sliding shaft (1110) and the second sliding shaft (1120) are arranged in parallel;

the left push plate mechanism (200) and the right push plate mechanism (300) are slidably connected to the first sliding shaft (1110) and the second sliding shaft (1120);

and a positioning plate (1130) is provided on the first sliding shaft (1110).

5. The main unit of a packaging machine according to claim 2, characterized in that said rear push plate driving mechanism (400) comprises a rear push plate driving motor (410) and a first transmission shaft (420);

the rear push plate driving motor (410) is in transmission connection with the first transmission shaft (420);

the first transmission shaft (420) is rotatably connected to the left frame plate (1210) and the right frame plate (1220);

a first driving wheel (430) and a second driving wheel (440) are respectively arranged at two ends of the first transmission shaft (420);

a first driven wheel (450) is connected to the front end of the left frame plate (1210); a second driven wheel (460) is connected to the front end of the right frame plate (1220);

in the mounting state, the first driving wheel (430) is connected with the first driven wheel (450) through a first transmission belt (470); the second driving wheel (440) is connected with the second driven wheel (460) through a second transmission belt (480).

6. Main unit of a packaging machine according to claim 5, characterized in that said rear push plate mechanism (500) is connected to said first conveyor belt (470) and/or to said second conveyor belt (480) so that said rear push plate mechanism (500) can move back and forth.

7. The body arrangement of a packaging machine according to claim 2, characterised in that the push driving mechanism (600) comprises a push driving motor (610) and a second transmission shaft (620);

the goods pushing driving motor (610) is in transmission connection with the second transmission shaft (620);

the second transmission shaft (620) is rotatably connected to the left frame plate (1210) and the right frame plate (1220);

a third driving wheel (630) and a fourth driving wheel (640) are respectively arranged at two ends of the second transmission shaft (620);

a third driven wheel (650) is connected to the front end of the left frame plate (1210); a fourth driven wheel (660) is connected to the front end of the right frame plate (1220);

in the mounting state, the third driving wheel (630) is connected with the third driven wheel (650) through a third transmission belt (670); the fourth driving wheel (640) is connected with the fourth driven wheel (660) through a fourth transmission belt (680).

8. The body arrangement of a packaging machine according to claim 7, characterised in that the pushing mechanism (700) is connected to the third conveyor belt (670) and/or the fourth conveyor belt (680) such that the pushing mechanism (700) can move back and forth.

9. Main unit of a packaging machine according to claim 2, characterized in that on said left frame plate (1210) there is provided a left slide rail (1310), on said right frame plate (1220) there is provided a right slide rail (1320);

in a use state, the rear push plate mechanism (500) and the cargo pushing mechanism (700) can slide on the left slide rail (1310) and the right slide rail (1320).

10. The body arrangement of a packaging machine according to claim 1, characterised in that the carrier platen drive mechanism (900) comprises a carrier platen drive motor (920) and a gear transmission mechanism (930);

in the installation state, the bracket pressing plate driving motor (920) is connected to the frame (1200) through a connecting frame (910), the bracket pressing plate mechanism (1000) is rotatably connected to the connecting frame (910), and the bracket pressing plate driving motor (920) is connected to the bracket pressing plate mechanism (1000) through the gear transmission mechanism (930) so that the bracket pressing plate mechanism (1000) can move in the up-down direction.

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