CN111422394A

CN111422394A - Packaging machine

Info

Publication number: CN111422394A
Application number: CN202010289208.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Cao Renzong
Current assignee: Taicang hepson Packaging Co., Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-07-17
Anticipated expiration: 2040-04-14
Also published as: CN113104256A; CN111422394B; CN113104257A; CN113104258A

Abstract

The invention discloses a packaging machine, and belongs to the technical field of packaging equipment. The locking mechanism comprises a bottom plate, a fixed plate is arranged at the top end of the bottom plate, a sliding chute is arranged in the fixed plate, and a sliding rod and a sliding block which are sequentially connected are in sliding fit in the sliding chute; when the bottom end of the sliding block abuts against the bottom of the sliding groove, the locking mechanism positioned below can be connected with the sliding block through the first hole positioned on the side wall of the sliding groove so as to connect the sliding block with the fixed plate; when the top butt of slider was on the bottom of stopper, the locking mechanical system that is located the top can link to each other with the slider through the second hole that is located on the spout lateral wall to link to each other slider and fixed plate. The packaging machine provided by the invention is convenient for separating the sliding block from the fixed plate and can reliably connect the sliding block with the fixed plate, so that articles can be conveniently packaged, and the packaging efficiency of the packaging machine is improved.

Description

Packaging machine

Technical Field

The invention relates to the technical field of packaging equipment, in particular to a packaging machine.

Background

The packaging machine is a machine for packaging products, and plays a role in protection and beauty. The packaging machine mainly comprises 2 aspects: 1. and 2, production line type integral production packaging, and product peripheral packaging equipment.

Chinese patent CN201920304196.1 discloses a mechanical automatic packaging machine convenient to use, which comprises a bottom plate, wherein the right side of the top of the bottom plate is fixedly connected with a vertical plate, the top of the left side of the vertical plate is fixedly connected with a transverse plate, the top of the transverse plate is fixedly connected with a first electric push rod, the bottom end of the first electric push rod penetrates through the transverse plate and extends to the outside of the transverse plate, the left side of the top of the movable plate is fixedly connected with a fixed shaft, the left side of the top of the bottom plate is fixedly connected with a fixed plate, the bottom of the right side of the fixed plate is fixedly connected with a support plate, the bottom of the support plate is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with a driving rotating shaft, the top end of the driving rotating shaft penetrates through the support plate, the top of the sliding block is fixedly connected with a sliding rod, the top of the right side of the sliding rod is fixedly connected with a movable plate, the top of the right side of the fixed plate is provided with a movable groove matched with the movable plate for use, the right side of the movable plate penetrates through the movable groove and extends to the outside of the movable groove, the top of the movable plate is fixedly connected with a second electric push rod, the bottom end of the second electric push rod penetrates through the movable plate and extends to the outside of the movable plate, a rotating block is fixedly connected with the bottom of the movable plate, a clamping plate is arranged below the movable plate, a bearing is fixedly connected in a groove in the top of the clamping plate and corresponds to the position of the rotating block, the bottom of the rotating block penetrates through the bearing and extends to the inside of the rotating block and is fixedly connected with the rotating block, a limiting block is sleeved on the surface of the sliding rod and, the left end of the threaded rod is fixedly connected with a rotating rod, the right end of the threaded rod sequentially penetrates through the fixed plate and the sliding block and extends into the sliding block to be in threaded connection with the fixed plate, the surface of the threaded rod is fixedly connected with a top block positioned on the left side of the fixed plate, the right side of the top block is in contact with the left side of the fixed plate, a limiting opening is formed in the left side of the fixed plate and below a limiting block, when the packaging material packaging device is used, an article to be packaged is placed at the top of the placing plate by a worker, the second electric push rod drives the clamping plate to move downwards through the rotating block and the bearing, the placing plate and the clamping plate are matched with each other to fix the article, the worker sleeves the packaging material on the surface of the fixed shaft, the packaging material is basically wound on the winding drum, the first electric push rod drives the fixed shaft to move downwards through, the driving motor drives through the drive pivot and shelves the board rotatory, it constantly twines packaging material to shelve the slab band animal article, first electric putter drives fixed axle upward movement through the movable plate, can accomplish the packing of article through above-mentioned step, when the great article of needs packing a batch of volume, the staff is direct with the rotatory dwang of hand, the dwang drives the threaded rod rotatory, the threaded rod breaks away from the slider, the staff takes off the lid at fixed plate top, upwards stimulate the fly leaf, the fly leaf drives slider upward movement through the slide bar, when the top of slider and the bottom of stopper mutually contact, the spacing mouth is just in time aimed at to the left thread groove of slider, take off the threaded rod, insert it in the spacing mouth, and screw up the threaded rod, make the threaded rod get into the left thread.

In above-mentioned patent document, through rotating the threaded rod, realize being connected or separating of slider and fixed plate, not only need manual operation, waste time and energy, moreover, if after the multiple operation, the phenomenon of smooth silk can appear to can not reliably be connected slider and fixed plate, thereby be not convenient for pack article, reduce packagine machine's packing efficiency.

Disclosure of Invention

The invention provides a packaging machine, which solves the problems of unreliable connection and inconvenient assembly and disassembly between a sliding block and a fixed plate in a mechanical automatic packaging machine in the background technology.

The invention provides a packaging machine, which comprises a bottom plate, wherein a fixed plate is arranged at the top end of the bottom plate, a sliding chute is arranged in the fixed plate, a sliding rod and a sliding block which are sequentially connected are in sliding fit in the sliding chute, the sliding block is positioned at the lower end of the sliding rod, the bottom end of the sliding block can be abutted against the bottom of the sliding chute, a limiting block is arranged in the sliding chute, the limiting block is close to the top of the fixed plate, and the top end of the sliding block can be abutted against the bottom end of the limiting block;

when the bottom end of the sliding block abuts against the bottom of the sliding groove, the locking mechanism positioned below can be connected with the sliding block through the first hole positioned on the side wall of the sliding groove so as to connect the sliding block with the fixed plate;

when the top butt of slider was on the bottom of stopper, the locking mechanical system that is located the top can link to each other with the slider through the second hole that is located on the spout lateral wall to link to each other slider and fixed plate.

Optionally, the outer side of the fixing plate has a pair of mounting plates, the mounting plates correspond to the locking mechanisms one by one, and the locking mechanisms include:

the driving motor is arranged on the rear side of the mounting plate;

the first end of the first driving plate is sleeved on a motor shaft of the driving motor;

the first end of the second driving plate is sleeved on a motor shaft of the driving motor, and the second driving plate is positioned on the front side of the first driving plate;

the second end of the first driving plate is pivoted on the first end of the arc-shaped plate, and the second end of the second driving plate is pivoted on the second end of the arc-shaped plate;

the second end of the arc-shaped plate is pivoted on the first end of the swing rod, and the second end of the swing rod is pivoted on the mounting plate;

the locking piece has the arc wall on the arc, the first end and the arc wall sliding fit of locking piece, and the second end of locking piece can stretch into the draw-in groove that is located slider one side, is connected with the slider block to link to each other slider and fixed plate.

Optionally, the first driving plate includes a first circular plate and a first conical plate, the first circular plate is sleeved on a motor shaft of the driving motor, the first circular plate and the motor shaft of the driving motor are eccentrically arranged, a large end of the first conical plate is connected to the first circular plate, and a small end of the first conical plate is pivoted to the first end of the arc-shaped plate.

Optionally, the second driving plate includes a second circular plate and a second conical plate, the second circular plate is sleeved on the motor shaft of the driving motor, the second circular plate and the motor shaft of the driving motor are eccentrically arranged, the second circular plate is located on the front side of the first circular plate, the large end of the second conical plate is connected to the second circular plate, and the small end of the second conical plate is pivoted to the second end of the arc-shaped plate.

Optionally, the locking piece includes little plectane and locking lever, and the front end of little plectane is equipped with the round pin axle, and round pin axle and arc wall sliding fit, the first end and the little plectane of locking lever are continuous, and the second end of locking lever can stretch into in the draw-in groove, is connected with the slider block to couple together slider and fixed plate.

Optionally, a magnet is fixed on the bottom of the slot, and the second end of the locking rod can be attracted to the bottom of the slot by the magnet.

It is optional, the outside of fixed plate is equipped with two protection casings, the protection casing is corresponding with locking mechanical system, the protection casing is used for protecting locking mechanical system, the protection casing is close to one of fixed plate and serves and have a plurality of spliced poles, the spliced pole is close to one of fixed plate and serves and have the hemisphere portion, a plurality of joint grooves have been seted up to one side of fixed plate, joint groove and spliced pole one-to-one, hemisphere portion can stretch into the joint inslot, the both sides of spliced pole have the notch respectively, two joint subassemblies have in the fixed plate, joint subassembly and notch one-to-one, the notch can be connected with joint subassembly block, in order to install.

Optionally, the joint subassembly includes joint post and coupling spring, the joint post includes hemisphere dop and first guide post, two guiding holes have been seted up on the lateral wall in joint groove, guiding hole and hemisphere dop one-to-one, and hemisphere dop and guiding hole sliding fit, the top of hemisphere dop can be connected with the notch block, first guide post is connected on the tip of hemisphere dop, coupling spring's first end links to each other with the tip of hemisphere dop, and coupling spring's first pot head is established on first guide post, coupling spring's second end links to each other with the hole bottom of guiding hole, and coupling spring's second pot head is established on the second guiding axle that is located on the guiding hole.

Optionally, the dustproof cover is detachably arranged at the top of the fixing plate, and a sealing ring is arranged between the dustproof cover and the fixing plate.

Optionally, the sealing ring includes a base ring portion, the base ring portion is located in an annular cavity in the dust cover, an annular protrusion is arranged on the inner periphery of the base ring portion, the annular protrusion is embedded in the annular groove located on the fixing plate, a plurality of annular plates distributed at intervals are arranged on the outer periphery of the base ring portion, an annular ring with a semicircular section is arranged on the outer periphery of the annular plates, and the top of the annular ring abuts against the bottom of the annular cavity.

The invention has the beneficial effects that: the invention provides a packaging machine which comprises a bottom plate, wherein a fixed plate is arranged at the top end of the bottom plate, a sliding chute is arranged in the fixed plate, a sliding rod and a sliding block which are sequentially connected are in sliding fit in the sliding chute, the sliding block is positioned at the lower end of the sliding rod, the bottom end of the sliding block can be abutted against the bottom of the sliding chute, a limiting block is arranged in the sliding chute, the limiting block is close to the top of the fixed plate, and the top end of the sliding block can be abutted against the bottom end of the limiting block; when the bottom end of the sliding block abuts against the bottom of the sliding groove, the locking mechanism positioned below can be connected with the sliding block through the first hole positioned on the side wall of the sliding groove so as to connect the sliding block with the fixed plate; when the top end of the sliding block abuts against the bottom end of the limiting block, the locking mechanism positioned above the sliding block can be connected with the sliding block through the second hole positioned on the side wall of the sliding groove so as to connect the sliding block with the fixed plate, and the sliding block and the fixed plate can be conveniently connected and separated and reliably connected through the locking mechanism, so that articles can be conveniently packaged, the packaging efficiency of the packaging machine is improved, and the problems that the sliding block and the fixed plate are unreliable in connection and inconvenient to assemble and disassemble in the conventional packaging machine and the packaging efficiency of the packaging machine is low are solved.

The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a packaging machine according to an embodiment of the present invention;

FIG. 2 is an enlarged view at G of FIG. 1;

FIG. 3 is an enlarged view taken at I of FIG. 2;

fig. 4 is an enlarged view at H in fig. 1.

Description of reference numerals:

1-driving a motor; 2-a first drive plate; 21-a first circular plate; 22-a first cone plate; 3-a second drive plate; 31-a second circular plate; 32-a second conical plate; 4-arc-shaped plates; 41-arc groove; 5-oscillating bar; 6-a locking element; 61-small circular plate; 62-a locking bar; 63-a pin shaft; 7-a protective cover; 71-connecting column; 711-a hemispherical portion; 712-a notch; 81-clamping column; 811-hemispherical chuck; 812-a first guide post; 82-connecting a spring; 9-sealing ring; 91-a base ring portion; 92-an annular projection; 93-an annular plate; 94-an annular ring; 10-a base plate; 20-fixing the plate; 201-a chute; 2011-first well; 2012-a second well; 202-a mounting plate; 203-a clamping groove; 2031-a guide hole; 204-an annular groove; 30-a slide bar; 40-a slide block; 401-card slot; 50-a limiting block; 60-a magnet; 70-a second guide shaft; 80-dust cover.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.

Next, it should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the direction or positional relationship shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or member must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The packaging machine is a machine for packaging products, plays a role in protection and beauty, Chinese patent CN201920304196.1 discloses a mechanical automatic packaging machine convenient to use, comprising a bottom plate, a fixed plate fixedly connected to the left side of the top of the bottom plate, a chute arranged at the top of the fixed plate, a slide block slidably connected to the inner wall of the chute, the bottom of the slide block and the bottom of the inner wall of the chute are in contact with each other, a slide rod fixedly connected to the top of the slide block, a threaded rod arranged at the left side of the fixed plate and corresponding to the slide block, a rotating rod fixedly connected to the left end of the threaded rod, the right end of the threaded rod sequentially penetrating through the fixed plate and the slide block and extending to the inside of the slide block to be in and out threaded connection with the slide block, the threaded rod is screwed in and out by manual operation of the rotating rod, so as to realize connection or separation between, after the rotating rod is operated for many times, the phenomenon of thread slipping can occur, so that the fixed plate and the sliding block cannot be reliably connected.

Therefore, the embodiment of the invention provides the packaging machine, which is not only convenient for connecting or separating the fixed plate and the sliding block, but also capable of reliably connecting the fixed plate and the sliding block.

As shown in fig. 1 to 4, fig. 1 is a schematic structural diagram of a packaging machine according to an embodiment of the present invention. Fig. 2 is an enlarged view at G in fig. 1. Fig. 3 is an enlarged view at I in fig. 2. Fig. 4 is an enlarged view at H in fig. 1.

The first embodiment is as follows:

as shown in fig. 1, a packing machine includes a base plate 10, a fixed plate 20 is disposed at a top end of the base plate 10, a sliding slot 201 is disposed in the fixed plate 20, a sliding rod 30 and a sliding block 40 connected in sequence are slidably fitted in the sliding slot 201, the sliding block 40 is disposed at a lower end of the sliding rod 30, a bottom end of the sliding block 40 can abut against a bottom of the sliding slot 201, a stopper 50 is disposed in the sliding slot 201, the stopper 50 is close to a top of the fixed plate 20, and a top end of the sliding block 40 can abut against a bottom end of the stopper 50, wherein the packing machine further includes two locking mechanisms, the locking mechanism is disposed outside a side of the fixed plate 20, when the bottom end of the sliding block 40 abuts against the bottom of the sliding slot 201, the locking mechanism disposed at a lower portion can be connected to the sliding block 40 through a first hole 2011 disposed on a side wall of the sliding slot 201 to connect the sliding block 40 with the fixed plate 20, and when a top end of the sliding, to connect the slider 40 with the fixed plate 20.

The packaging machine provided by the embodiment is not only convenient for connecting or separating the sliding block 40 and the fixing plate 20, but also can reliably connect the sliding block 40 and the fixing plate 20, so that the packaging machine provided by the embodiment is convenient for packaging articles, and the packaging efficiency of the packaging machine can be improved.

In a specific embodiment of this embodiment, a pair of mounting plates 202 is disposed on the outer side of the fixing plate 20, the mounting plates 202 correspond to locking mechanisms one by one, the locking mechanism includes a driving motor 1, a first driving plate 2, a second driving plate 3, an arc plate 4, a swing link 5 and a locking member 6, the driving motor 1 is disposed on the rear side of the mounting plates 202, a first end of the first driving plate 2 is sleeved on a motor shaft of the driving motor 1, a first end of the second driving plate 3 is sleeved on the motor shaft of the driving motor 1, the second driving plate 3 is disposed on the front side of the first driving plate 2, a second end of the first driving plate 2 is pivoted on a first end of the arc plate 4, a second end of the second driving plate 3 is pivoted on a second end of the arc plate 4, a second end of the arc plate 4 is pivoted on a first end of the swing link 5, a second end of the swing link 5 is pivoted on the mounting plates 202, the arc, the first end of locking piece 6 and arc groove 41 sliding fit, the second end of locking piece 6 can stretch into the draw-in groove 401 that is located slider 40 one side, is connected with the slider 40 block to link to each other slider 40 with fixed plate 20.

In this embodiment, the mounting plate 202 is welded to the fixing plate 20, so that the fixing plate 20 has a more stable structure and greater rigidity.

Optionally, the first driving plate 2 includes a first circular plate 21 and a first conical plate 22, the first circular plate 21 is sleeved on the motor shaft of the driving motor 1, the first circular plate 21 and the motor shaft of the driving motor 1 are eccentrically arranged, the large end of the first conical plate 22 is connected to the first circular plate 21, and the small end of the first conical plate 22 is pivotally connected to the first end of the arc-shaped plate 4.

Optionally, the second driving plate 3 includes a second circular plate 31 and a second conical plate 32, the second circular plate 31 is sleeved on the motor shaft of the driving motor 1, the second circular plate 31 is disposed eccentrically to the motor shaft of the driving motor 1, the second circular plate 31 is located at the front side of the first circular plate 21, the large end of the second conical plate 32 is connected to the second circular plate 31, and the small end of the second conical plate 32 is pivoted to the second end of the arc-shaped plate 4.

Optionally, the locking member 6 includes a small circular plate 61 and a locking rod 62, a pin 63 is disposed at the front end of the small circular plate 61, the pin 63 is in sliding fit with the arc-shaped groove 41, a first end of the locking rod 62 is connected to the small circular plate 61, and a second end of the locking rod 62 can extend into the slot 401 and be engaged with the slider 40, so as to connect the slider 40 and the fixed plate 20.

In the embodiment, the first circular plate 21 and the first conical plate 22, the second circular plate 31 and the second conical plate 32, the small circular plate 61 and the locking rod 62 are all integrally formed, so that the manufacturing is convenient, the rigidity of the first driving plate 2, the second driving plate 3 and the locking piece 6 can be enhanced, the structure of the packaging machine provided by the embodiment is enhanced, and the stability of the packaging machine is improved.

Optionally, a magnet 60 is fixed on the bottom of the slot 401, and the magnet 60 can attract the second end of the locking rod 62 to the bottom of the slot 401, so that the connection between the slider 40 and the fixing plate 20 is more reliable.

In this embodiment, if the sliding block 40 needs to be connected or separated from the fixed plate 20, the driving motor 1 is started, and the driving motor 1 drives the first circular plate 21 and the second circular plate 31 to rotate, so as to swing the swing rod 5, so that the pin 63 slides in the arc-shaped groove 41, and the movement of the locking rod 62 is realized, thereby realizing the connection or separation of the sliding block 40 and the fixed plate 20.

Example two

As shown in fig. 2 and fig. 3, based on embodiment one, the packagine machine that this embodiment provided, wherein, the outside of fixed plate 20 is equipped with two protection covers 7, protection cover 7 is corresponding with locking mechanical system, protection cover 7 is used for protecting locking mechanical system, protection cover 7 is close to one of fixed plate 20 and serves and have a plurality of spliced poles 71, spliced pole 71 is close to one of fixed plate 20 and serves and have hemisphere portion 711, a plurality of joint grooves 203 have been seted up to one side of fixed plate 20, joint groove 203 and spliced pole 71 one-to-one, hemisphere portion 711 can stretch into in the joint groove 203, the both sides of spliced pole 71 have notch 712 respectively, two joint subassemblies have in the fixed plate 20, joint subassembly and notch 712 one-to-one, notch 712 can be connected with joint subassembly block, in order to install protection cover 7 on.

The packagine machine that this embodiment provided includes protection casing 7, and protection casing 7 protects locking mechanical system, therefore can prevent that locking mechanical system from being collided with and taking place the damage to can prolong locking mechanical system's life-span, and then prolong packagine machine's life.

In the optional implementation manner of this embodiment, the clamping component includes a clamping column 81 and a connecting spring 82, the clamping column 81 includes a hemispherical chuck 811 and a first guiding column 812, two guiding holes 2031 have been seted up on the side wall of the clamping groove 203, the guiding holes 2031 corresponds to the hemispherical chuck 811 one to one, and the hemispherical chuck 811 is in sliding fit with the guiding holes 2031, the top of the hemispherical chuck 811 can be connected with the notch 712 in a clamping manner, the first guiding column 812 is connected on the end of the hemispherical chuck 811, the first end of the connecting spring 82 is connected with the end of the hemispherical chuck 811, and the first end of the connecting spring 82 is sleeved on the first guiding column 812, the second end of the connecting spring 82 is connected with the hole bottom of the guiding hole 2031, and the second end of the connecting spring 82 is sleeved on the second guiding shaft 70 located on the guiding hole 2031.

The packaging machine provided by the embodiment adopts a detachable connection mode between the protective cover 7 and the fixing plate 20, so that the locking mechanism is convenient to replace or overhaul, and the packaging machine can be always kept in a normal use state.

It should be noted that the purpose of this embodiment can be achieved by any connection method that can achieve detachable connection between the protection cover 7 and the fixing plate 20, and further description of other connection methods is omitted here.

EXAMPLE III

As shown in fig. 1 and 4, based on the first embodiment or the second embodiment, the packaging machine provided in this embodiment further includes a dust cap 80, the dust cap 80 is detachably disposed on the top of the fixing plate 20, specifically, a sealing ring 9 is disposed between the dust cap 80 and the fixing plate 20, and the sealing ring 9 is disposed to enhance the sealing performance between the dust cap 80 and the fixing plate 20, so as to prevent dust from entering the chute 201 and affecting the movement of the slider 40.

Optionally, the sealing ring 9 includes a base ring portion 91, the base ring portion 91 is located in an annular cavity 801 in the dust cover 80, an annular protrusion 92 is provided on an inner circumference of the base ring portion 91, the annular protrusion 92 is embedded in an annular groove 204 located on the fixing plate 20, a plurality of annular plates 93 are provided on an outer circumference of the base ring portion 91 at intervals, an annular ring 94 with a semicircular cross section is provided on an outer circumference of the annular plate 93, and a top of the annular ring 94 abuts against a bottom of the annular cavity 801.

Here, the seal ring 9 may be a seal ring having another structure such as an O-ring, as long as it can provide a sealing effect.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The packaging machine comprises a base plate (10), wherein a fixing plate (20) is arranged at the top end of the base plate (10), a sliding groove (201) is formed in the fixing plate (20), a sliding rod (30) and a sliding block (40) which are sequentially connected are arranged in the sliding groove (201) in a sliding fit mode, the sliding block (40) is located at the lower end of the sliding rod (30), the bottom end of the sliding block (40) can abut against the bottom of the sliding groove (201), a limiting block (50) is arranged in the sliding groove (201), the limiting block (50) is close to the top of the fixing plate (20), and the top end of the sliding block (40) can abut against the bottom end of the limiting block (50);

when the bottom end of the sliding block (40) abuts against the bottom of the sliding groove (201), the lower locking mechanism can be connected with the sliding block (40) through a first hole (2011) in the side wall of the sliding groove (201) so as to connect the sliding block (40) with the fixed plate (20);

when the top end of the sliding block (40) abuts against the bottom end of the limiting block (50), the locking mechanism positioned above can be connected with the sliding block (40) through a second hole (2012) positioned on the side wall of the sliding groove (201) so as to connect the sliding block (40) with the fixing plate (20).

2. The packaging machine according to claim 1, characterized in that the fixed plate (20) has, on its outer side, a pair of mounting plates (202), said mounting plates (202) being in one-to-one correspondence with said locking mechanisms comprising:

the driving motor (1), the said driving motor (1) is installed on the rear side of the said mounting plate (202);

the first end of the first driving plate (2) is sleeved on a motor shaft of the driving motor (1);

the first end of the second driving plate (3) is sleeved on the motor shaft of the driving motor (1), and the second driving plate (3) is positioned on the front side of the first driving plate (2);

an arc-shaped plate (4), wherein the second end of the first driving plate (2) is pivoted on the first end of the arc-shaped plate (4), and the second end of the second driving plate (3) is pivoted on the second end of the arc-shaped plate (4);

the second end of the arc-shaped plate (4) is pivoted on the first end of the swing rod (5), and the second end of the swing rod (5) is pivoted on the mounting plate (202);

locking piece (6), arc wall (41) have on arc (4), the first end of locking piece (6) with arc wall (41) sliding fit, the second end of locking piece (6) can stretch into and be located in draw-in groove (401) of slider (40) one side, with slider (40) block is connected, in order to incite somebody to action slider (40) with fixed plate (20) link to each other.

3. The packaging machine according to claim 2, characterized in that the first driving plate (2) comprises a first circular plate (21) and a first conical plate (22), the first circular plate (21) is sleeved on the motor shaft of the driving motor (1), the first circular plate (21) is arranged eccentrically to the motor shaft of the driving motor (1), the large end of the first conical plate (22) is connected to the first circular plate (21), and the small end of the first conical plate (22) is pivoted on the first end of the arc-shaped plate (4).

4. The packaging machine according to claim 3, characterized in that the second driving plate (3) comprises a second circular plate (31) and a second conical plate (32), the second circular plate (31) is sleeved on the motor shaft of the driving motor (1), the second circular plate (31) is arranged eccentrically to the motor shaft of the driving motor (1), the second circular plate (31) is located at the front side of the first circular plate (21), the large end of the second conical plate (32) is connected with the second circular plate (31), and the small end of the second conical plate (32) is pivoted on the second end of the arc-shaped plate (4).

5. The packaging machine according to any one of claims 2 to 4, wherein the locking member (6) comprises a small circular plate (61) and a locking rod (62), a pin (63) is provided at the front end of the small circular plate (61), the pin (63) is slidably engaged with the arc-shaped groove (41), a first end of the locking rod (62) is connected with the small circular plate (61), and a second end of the locking rod (62) can extend into the slot (401) to be snap-connected with the slider (40) so as to connect the slider (40) with the fixed plate (20).

6. The packaging machine according to claim 5, characterized in that a magnet (60) is fixed on the bottom of the slot (401), said magnet (60) being able to attract the second end of the locking lever (62) onto the bottom of the slot (401).

7. The packaging machine according to any one of claims 2 to 4, characterized in that two protective covers (7) are provided on the outer side of the fixed plate (20), the protective covers (7) correspond to the locking mechanisms, the protective covers (7) are used for protecting the locking mechanisms, one end of each protective cover (7) close to the fixed plate (20) is provided with a plurality of connecting posts (71), one end of each connecting post (71) close to the fixed plate (20) is provided with a hemispherical portion (711), one side of the fixed plate (20) is provided with a plurality of clamping grooves (203), the clamping grooves (203) correspond to the connecting posts (71) in a one-to-one manner, the hemispherical portions (711) can extend into the clamping grooves (203), two sides of each connecting post (71) are provided with notches (712), and two clamping components are provided in the fixed plate (20), the clamping components correspond to the notches (712) one to one, and the notches (712) can be clamped and connected with the clamping components to install the protective cover (7) on the fixing plate (20).

8. The packaging machine according to claim 7, wherein the clamping assembly comprises a clamping column (81) and a connecting spring (82), the clamping column (81) comprises a hemispherical clamping head (811) and a first guiding column (812), two guiding holes (2031) are formed in the side wall of the clamping groove (203), the guiding holes (2031) correspond to the hemispherical clamping heads (811) one by one, the hemispherical clamping heads (811) are in sliding fit with the guiding holes (2031), the top of the hemispherical clamping head (811) can be clamped and connected with the concave opening (712), the first guiding column (812) is connected to the end of the hemispherical clamping head (811), the first end of the connecting spring (82) is connected to the end of the hemispherical clamping head (811), and the first end of the connecting spring (82) is sleeved on the first guiding column (812), the second end of the connecting spring (82) is connected with the bottom of the guide hole (2031), and the second end of the connecting spring (82) is sleeved on a second guide shaft (70) positioned on the guide hole (2031).

9. The packaging machine according to claim 1, further comprising a dust cap (80), wherein the dust cap (80) is detachably disposed on top of the fixed plate (20), and a sealing ring (9) is disposed between the dust cap (80) and the fixed plate (20).

10. The packaging machine according to claim 9, wherein the sealing ring (9) comprises a base ring portion (91), the base ring portion (91) is located in an annular cavity (801) in the dust cover (80), an annular protrusion (92) is arranged on the inner periphery of the base ring portion (91), the annular protrusion (92) is embedded in an annular groove (204) located on the fixing plate (20), a plurality of annular plates (93) distributed at intervals are arranged on the outer periphery of the base ring portion (91), an annular ring (94) with a semicircular section is arranged on the outer periphery of each annular plate (93), and the top of each annular ring (94) abuts against the bottom of the annular cavity (801).